Flame-retardant plastic offcut recycling extruder and anti-adhesion method thereof

Abstract

The invention belongs to the technical field of flame-retardant plastic recycling and forming, and particularly relates to a flame-retardant plastic offcut recycling extruder and an anti-adhesion method thereof.The extruder comprises a forming cabin, a feeding hopper and a box head with holes, the cooling water tank is arranged on the side, away from the driving mechanism, of the forming cabin in a zigzag shape, a flushing mechanism is installed outside the cooling water tank, a guide roller mechanism is installed at the top of the cooling water tank, and the guide roller mechanism is arranged on the side, away from the driving mechanism, of the cooling water tank. The clamp is used for pulling the plastic thread end to pass through the guide roller mechanism; the method comprises steps 1 to 5. Water is sprayed to form two water curtains to limit the two sides of a plastic thread end and cool the plastic thread end to prevent adhesion, the plastic thread end is fed into the clamp through water flow, the plastic thread end does not need to be taken by hands, and traction penetrating operation can be rapidly completed.

Description

Technical Field

[0001] The invention belongs to the technical field of flame-retardant plastic recycling and molding, and in particular relates to a flame-retardant plastic edge material recycling extruder and an anti-adhesion method thereof. Background Art

[0002] Plastic recycling can reduce the demand for raw materials and the consumption of non-renewable resources such as petroleum. Among them, flame-retardant plastics are made by adding various flame retardants, such as bromine-based, phosphorus-based, nitrogen-based flame retardants, to traditional plastics. Its recycling is beneficial to green environmental protection.

[0003] For the recycling of flame-retardant plastics, first, the staff needs to collect the discarded flame-retardant plastics and classify them according to their types, colors, pollution levels, etc. The classified flame-retardant plastics are crushed, usually into smaller particles or fragments for subsequent processing. At the same time, the crushed plastics are cleaned to remove stains, dust and other impurities attached to the surface.

[0004] During the extrusion process, the plastic line needs to pass through a water tank for cooling and molding, which has the following problems: 1. After the thread is squeezed out, the staff is generally required to wear gloves and hold it tightly with their hands for pulling. Before putting it into the water, its temperature is high and it is easy to burn the hands, resulting in low safety of the pulling and passing operation.

[0005] 2. When the thread ends are pulled by a clamp, the clamp cannot comb the thread ends, causing the thread ends to stick together. The sticky parts need to be cut off, which brings a heavy burden to the pulling work of thread ends and is not conducive to the rapid completion of pulling and passing. Summary of the invention

[0006] The purpose of the present invention is to provide a flame-retardant plastic edge material recovery extruder and an anti-adhesion method thereof, wherein water is sprayed to form two water curtains to limit and cool the plastic thread ends on both sides to prevent adhesion, and the water flow sends the plastic thread ends into the clamps, avoiding the need to take the plastic thread ends by hand, and the traction and passing operation can be completed quickly.

[0007] The technical solution adopted by the present invention is as follows: A flame retardant plastic edge material recovery extruder comprises a molding chamber, a feeding hopper and a perforated box head for linearly extruding molten plastic, wherein a screw and a driving mechanism for rotating the screw are arranged at one end of the molding chamber away from the perforated box head, and further comprises: A cooling water trough, the cooling water trough is arranged in a folded shape on a side of the molding chamber away from the driving mechanism, a flushing mechanism is installed on the outside of the cooling water trough, and a guide roller mechanism is installed on the top of the cooling water trough; A clamp, the clamp is used to pull the plastic thread to pass through the guide roller mechanism, a male clamp and a female clamp are slidably installed on both sides of the clamp, and a wire arrangement needle and a limiting concave block are staggered between the outer sides of the male clamp and the outer sides of the female clamp. When the molten plastic is extruded, the wire arrangement needle and the limiting concave block bite the multiple plastic thread ends to avoid taking the plastic thread ends by hand, and the wire arrangement needle and the limiting concave block are separated to remove the multiple plastic thread ends at one time; A material slide table is arranged on one side of the box head with holes and is used to hang the clip. An arc-shaped slide, leakage holes on both sides of the arc-shaped slide and a filter installed inside the leakage hole are arranged on the top of the material slide table. At the same time, water is sprayed toward the leakage hole through the flushing mechanism to form a water curtain to limit and cool the plastic thread head, so that multiple strands of plastic thread heads are separated along the inclined arc-shaped slide, and the water flow sends the plastic thread head into between the wiring needle head and the limiting concave block.

[0008] As an optional solution, an annular support member offset from the leakage hole is fixed to the bottom edge of the slide table, and a bolt connected to the side of the clip is inserted inside the annular support member. When the annular support member and the bolt member are inserted into each other, the clip is used to hang. When the annular support member and the bolt member are separated, the clip is operated by hand to pull multiple strands of plastic thread through the guide roller mechanism.

[0009] As an optional solution, the clamp includes a T-shaped handle and a hollow frame, the T-shaped handle includes an integrally formed horizontal grip handle and a vertical stop handle, and the vertical stop handle is provided with a guide hole, the guide hole is used for the sliding of the male clamping plate and the female clamping plate, and the limiting concave block passes through the hollow frame to separate multiple strands of plastic thread ends.

[0010] As an optional solution, a first elastic member is fixed to the arc surface of the wire traversing needle head close to the limiting concave block, and a second elastic member is fixed to the arc surface of the limiting concave block close to the wire traversing needle head.

[0011] As an optional solution, the flushing mechanism includes a first water pump and a second water pump, and the water inlet of the first water pump and the water inlet of the second water pump are both equipped with cooling water pipes connected to one end of the cooling water trough, and the other end of the cooling water trough is inclined and equipped with a water distribution channel connected to the output end of the first water pump.

[0012] As an optional solution, a transfer water tank for spraying water toward the leakage hole and a water distribution square pipe connected to the bottom of the transfer water tank are arranged outside the perforated box head, and a water supply pipe is connected between one side of the transfer water tank and the output end of the second water pump.

[0013] As an optional solution, the guide roller mechanism includes a suspended roller and a frame roller rotatably installed on the top of the cooling water trough, a submersible roller is rotatably installed inside the cooling water trough, and a guide wheel is rotatably installed on the outer surface of the frame roller. When the plastic thread end is pulled, the plastic thread end is passed around the submersible roller, the suspended roller and the guide wheel in sequence.

[0014] As an optional solution, a first pressing handle is fixed to one end of the male clamping plate that passes through the guide hole, and a second pressing handle is fixed to one end of the female clamping plate that passes through the guide hole.

[0015] As an optional solution, the driving mechanism includes a reducer connected to one end of the screw, a power distribution cabinet is installed at the bottom of the reducer, a pulley unit electrically connected to the power distribution cabinet is connected to the outer side of the reducer, and a cooling fan electrically connected to the power distribution cabinet is installed inside the molding chamber.

[0016] A method for preventing adhesion of a flame retardant plastic edge material recovery extruder comprises the following steps: Step 1: Feeding: The recycled flame-retardant plastic scraps are put into an electric melting furnace to melt, and the molten plastic is fed into the molding chamber along the feed hopper. The driving mechanism rotates the screw to extrude the molten plastic in the molding chamber, so that the molten plastic is extruded in a linear shape from the holes in the perforated box head; Step 2, separating the thread ends: start the flushing mechanism to spray water toward the leaking hole, forming two water curtains to limit and cool the plastic thread ends on both sides, and the filter screen vertically supports the plastic thread ends and leaks water flow, so that multiple strands of plastic thread ends are separated along the inclined arc slideway, and the water flow sends the plastic thread ends between the wire discharge needle head and the limiting concave block, so as to comb the plastic thread ends in the cooling water environment to prevent adhesion; Step 3: Clamp the thread ends: Press the outer side of the male clamp plate and the female clamp plate close to the clamp by hand, drive the wiring needle and the limiting concave block to bite the multi-strand plastic thread ends until the wiring needle and the limiting concave block bite each other, lock the thread ends, and avoid taking the plastic thread ends by hand; Step 4: Threading: Pull the clamp by hand to pass the plastic thread around the guide roller mechanism to guide the plastic thread into the cooling water, and spray it toward the top of the cooling water tank through the flushing mechanism to divert the water flow horizontally, so that multiple strands of plastic thread are in contact with the cooling water, their heat is taken away by the cooling water, and they are quickly cooled and formed; Step 5: Remove the thread ends: Pass the plastic thread ends through the cooling water at the top of the cooling water tank, use the clamp by hand to separate the wiring needle and the limiting concave block to remove multiple strands of plastic thread ends at one time, pull them into the rotary pelletizer by hand, and use the rotating blade to cut the plastic thread.

[0017] The technical effects achieved by the present invention are: The present invention adopts a sliding table to guide the plastic thread ends to slide down, and can also be used to hang clips, wherein water is mainly sprayed toward the leaking hole through a flushing mechanism to form two water curtains to limit and cool the plastic thread ends on both sides, and the filter net can vertically support the plastic thread ends and leak water, so that multiple strands of plastic thread ends are separated along the inclined arc slide, and the water flow sends the plastic thread ends into between the wire arrangement needle and the limiting concave block of the clip, so as to comb the plastic thread ends in a cooling water environment to prevent adhesion. At the same time, by pressing the outer side of the male clamp and the female clamp close to the clamp by hand, the wire arrangement needle and the limiting concave block are driven to bite the multiple strands of plastic thread ends, avoiding the need to take the plastic thread ends by hand, and then pulling the clamp to pass through the cooling water tank, the traction and passing operation can be completed quickly.

[0018] When the annular support and the bolt are plugged in, the present invention is used to hang the clamp. As the plastic thread is fed into the clamp, the clamp needs to be lifted by hand to pull the plastic thread through. When the annular support and the bolt are separated, the clamp is operated by hand to pull multiple plastic thread strands through the guide roller mechanism.

[0019] The present invention also selects a first elastic part and a second elastic part made of silicone material, especially the arc surface of the first elastic part and the arc surface of the second elastic part can push the plastic thread end to the center. When the two contact the plastic thread end, they can buffer through their own deformation and will not excessively crush the plastic thread end. They also have good performance in clamping the plastic thread end with the female splint and the male splint, and can be suitable for plastic thread ends with different melting points.

[0020] The present invention provides standardized operation steps through steps one to five. Before the plastic wire is cut into particles, it is cooled with spray water, and the cooling water is used to rinse the water curtain to separate the plastic wire ends and reduce the waste caused by adhesion as much as possible. Then, the plastic wire ends are sent into the clamps, which can reduce the traction workload of wire end extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of a flame retardant plastic edge material recovery extruder in Embodiment 1 of the present invention; Figure 2 It is a bottom view of the box head with holes in the first embodiment of the present invention; Figure 3 is a front view of the screw in the first embodiment of the present invention; Figure 4 is a side view of the clip in the first embodiment of the present invention; Figure 5 is a rear view of the clip in the first embodiment of the present invention; Figure 6 is a side view of the slide table in the first embodiment of the present invention; Figure 7 is a front view of the first water pump in the first embodiment of the present invention; Figure 8 is a front view of the second water pump in the first embodiment of the present invention; Fig. 9 is a front view of the transfer water tank in the first embodiment of the present invention; Fig.10 is a front view of the collimating barrel in the first embodiment of the present invention; Fig.11 is a system block diagram of a controller in Embodiment 1 of the present invention; Fig.12 It is a flow chart of the anti-adhesion method in the embodiment of the second embodiment of the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Molding cabin; 101. Feed hopper; 102. Alignment barrel; 103. Cooling box; 2. Box head with holes; 3. Screw; 4. Cooling water tank; 5. Clip; 501. Male clamp; 5011. First pressing handle; 502. Female clamp; 5021. Second pressing handle; 503. Wire arrangement needle; 5031. First elastic member; 504. Position limiting concave block; 5041. Second elastic member; 505. T-shaped handle; 5051. Guide hole; 506. Hollow frame; 6. Slide Material table; 601, curved slide; 602, water leakage hole; 603, filter screen; 604, annular support; 605, bolt; 701, first water pump; 702, second water pump; 703, cooling water pipe; 704, water distribution channel; 705, transfer water tank; 706, water distribution square pipe; 707, water delivery pipe; 801, submersible roller; 802, suspended roller; 803, lifting roller; 804, guide wheel; 9, reducer; 10, power distribution cabinet; 11, pulley unit; 12, cooling fan. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0024] Plastic recycling can reduce the demand for raw materials and the consumption of non-renewable resources such as petroleum. When flame-retardant plastics are used, they are generally cut or die-cut, resulting in a certain amount of waste left over, which cannot be put into production. The purpose of the present invention is to recycle this part of the waste and reuse it after processing. After these waste materials are recycled to the site, the staff will classify them according to their type, color, degree of contamination, etc., and crush the classified flame-retardant plastics, usually into smaller particles or fragments, for subsequent processing. At the same time, the crushed flame-retardant plastics are cleaned to remove stains, dust and other impurities attached to the surface.

[0025] Since the flame-retardant plastic still has a certain hardness after being crushed, it cannot be directly extruded into shape. It is usually melted in an electric furnace and then poured into an extruder for extrusion molding.

[0026] Embodiment 1: like Figure 1-Figure 11 As shown, a flame retardant plastic edge material recycling extruder, the whole extruder is controlled by a controller, which can be an industrial computer, a single chip microcomputer, etc., including a molding chamber 1, a feed hopper 101 and a perforated box head 2 for linearly extruding molten plastic. When working, the molten plastic is guided by a guide tube and sent into the molding chamber 1 along the feed hopper 101. By rotating the molding chamber 1 away from the perforated box head 2, a screw 3 is provided, as shown in FIG. Figure 3 As shown, the molten plastic can be extruded in the molding chamber 1 along the axial direction of the screw 3, so that the molten plastic is extruded linearly from the hole of the perforated box head 2. Figure 2 As shown, 5 holes are selected for demonstration, but the actual production process is not limited to 5 holes. The producer can increase the number of holes to improve production capacity according to their own needs.

[0027] See attached Figure 1 , Fig.10 and Fig.11 In order to automatically rotate the screw 3, in this embodiment, a reducer 9 and a pulley unit 11 connected to the outer side of the reducer 9 are connected to one end of the screw 3. The pulley unit 11 is electrically connected to the controller through a relay. By operating the controller, the power distribution cabinet 10 installed at the bottom of the reducer 9 is used for power supply, so that the motor drive belt of the pulley unit 11 is driven by the reducer 9 at a low speed, driving the screw 3 to rotate at a low speed, so that the screw 3 pushes the molten plastic in the alignment barrel 102. A cooling fan 12 electrically connected to the power distribution cabinet 10 and a cooling mold box 103 connected to the cooling fan 12 are also installed inside the molding chamber 1. Since the cooling fan 12 is electrically connected to the controller, after the cooling fan 12 is started, cold air is blown toward the cooling mold box 103, so as to conveniently take away the heat on the alignment barrel 102 and prevent the inside of the molding chamber 1 from overheating.

[0028] However, even if the reducer 9 can reduce the rotation speed of the screw 3 through the transmission ratio, the plastic thread ends sprayed out of the holes of the perforated box head 2 will still be scattered under the action of the thrust. These 5 plastic thread ends themselves have a certain viscosity and will stick to each other after contact. Generally, the sticky parts need to be cut off, resulting in waste.

[0029] See attached Figure 1 and Figure 6In order to reduce the adhesion of plastic thread ends, the present embodiment uses cooling water in the cooling water trough 4 to receive 5 strands of plastic thread ends, and the cooling water trough 4 is folded and arranged on the side of the molding chamber 1 away from the driving mechanism, so that the cooling water can infiltrate the plastic thread ends. A flushing mechanism is installed outside the cooling water trough 4, and a guide roller mechanism is installed on the top of the cooling water trough 4 to bypass the plastic thread ends and straighten them, so that the flushing mechanism will not mess up the plastic thread ends when spraying water to impact the plastic thread ends.

[0030] Refer to the attached Figure 1 , Figure 4 and Figure 5 When extruding, the plastic thread has a high temperature, and it will be burned if you grab it directly with your hands. Therefore, the present embodiment is provided with a clamp 5, which is used to pull the plastic thread through the guide roller mechanism, and a male clamp plate 501 and a female clamp plate 502 are slidably installed on both sides of the clamp 5. Since the outer side of the male clamp plate 501 and the outer side of the female clamp plate 502 are staggered with a wire arranging needle 503 and a limiting concave block 504, when the molten plastic is extruded, the outer side of the male clamp plate 501 and the female clamp plate 502 are pressed by hand to approach the clamp 5, so as to drive the wire arranging needle 503 and the limiting concave block 504 to bite the multiple strands of plastic thread ends, so as to avoid taking the plastic thread ends by hand, and then pull the clamp 5 to pass through the cooling water tank 4; Furthermore, 5 pairs of wiring needles 503 are welded at intervals on the outside of the male clamping plate 501, and 5 limiting concave blocks 504 are welded at intervals on the outside of the female clamping plate 502, which corresponds to 5 strands of plastic wire ends. If the number of plastic wire ends is increased, the number of wiring needles 503 and limiting concave blocks 504 needs to be increased accordingly to adapt to the production rhythm; Furthermore, the clip 5 of this embodiment includes a T-shaped handle 505 and a hollow frame 506. The T-shaped handle 505 includes an integrated horizontal grip handle and a vertical stop handle, and a guide hole 5051 is provided on the vertical stop handle. The horizontal grip handle is convenient for holding by hand, and the vertical stop handle can separate the hand and the plastic thread. The guide hole 5051 is used for the sliding of the male clamping plate 501 and the female clamping plate 502. In order to keep the male clamping plate 501 and the female clamping plate 502 in an open state, the guide hole 5051 is provided on the vertical stop handle. In this state, two spring expansion tubes are installed inside the guide hole 5051 to support the male clamping plate 501 and the female clamping plate 502 respectively. When clamping the plastic thread end, it is necessary to compress the two spring expansion tubes by hand so that the male clamping plate 501 and the female clamping plate 502 can slide along the side holes of the guide hole 5051, driving the limiting concave block 504 to pass through the part of the hollow frame 506 to separate the multiple strands of plastic thread ends until the wiring needle 503 and the limiting concave block 504 are engaged with each other.

[0031] Refer to the attached Figure 4 and Figure 5, To facilitate the operation of the clip 5, in this embodiment, a first pressing handle 5011 is welded to one end of the male clamping plate 501 that penetrates the guiding hole 5051, and a second pressing handle 5021 is welded to one end of the female clamping plate 502 that penetrates the guiding hole 5051. This enables the staff to press the first pressing handle 5011 and the second pressing handle 5021 at a position far from the plastic wire head, driving the male clamping plate 501 and the female clamping plate 502 to approach each other and preventing burns from the plastic wire head.

[0032] Meanwhile, in this embodiment, a first elastic member 5031 is adhesively bonded to the arc surface of the wire arranging needle head 503 close to the limiting concave block 504, and a second elastic member 5041 is adhesively bonded to the arc surface of the limiting concave block 504 close to the wire arranging needle head 503. Both the first elastic member 5031 and the second elastic member 5041 can be made of silica gel material. In particular, the arc surfaces of the first elastic member 5031 and the second elastic member 5041 can push the plastic wire head to the center.

[0033] First, the melting point of ordinary silica gel is about 200°C, which is suitable for the recycling of such trimmings as PVC (polyvinyl chloride, with a melting point of 120°C - 150°C). Second, the melting point of high-temperature silica gel is about 1500°C, which is suitable for trimmings with the following materials: PEEK (polyetheretherketone): The melting point is 300°C; ABS (acrylonitrile-butadiene-styrene copolymer), with a melting point of 191°C - 316°C; AS (styrene-acrylonitrile copolymer), with a melting point of 204°C - 254°C; PMMA (polymethyl methacrylate), with a melting point of 170°C - 210°C.

[0034] Refer to the appendix Figure 1 、 Figure 6 and Fig. 9 , When spraying water, in this embodiment, a sliding material table 6 is used to guide the plastic wire head to slide down. The sliding material table 6 is arranged on one side of the box head 2 with holes, and can also be used to hang the clip 5. An arc-shaped slideway 601 is provided at the top of the sliding material table 6, water leakage holes 602 on both sides of the arc-shaped slideway 601, and a filter screen 603 installed inside the water leakage holes 602. Mainly, a water flushing mechanism sprays water towards the water leakage holes 602 to form two water curtains to limit and cool the plastic wire head on both sides. The filter screen 603 can vertically support the plastic wire head and drain the water flow, separating the multi-strand plastic wire heads along the inclined arc-shaped slideway 601, enabling the water flow to send the plastic wire heads between the wire arranging needle head 503 and the limiting concave block 504, so as to comb the plastic wire heads in a cooling water environment to prevent adhesion and quickly complete the traction and threading operation.

[0035] Refer to the appendix Figure 7 、 Figure 8 and Fig.11 The flushing mechanism used in this embodiment includes a first water pump 701 and a second water pump 702 electrically connected to the controller. First, a sufficient amount of cooling water is added to the cooling water tank 4, and the water inlet of the first water pump 701 and the water inlet of the second water pump 702 are both equipped with a cooling water pipe 703 connected to one end of the cooling water tank 4. After both are started, they can suck the cooling water in the cooling water tank 4. Since the other end of the cooling water tank 4 is inclined and the other end of the cooling water tank 4 is equipped with a water distribution channel 704 connected to the output end of the first water pump 701, the cooling water sucked by the first water pump 701 is sprayed along the water distribution channel 704 toward the top of the cooling water tank 4. In addition, 5 diversion pipes are passed through the bottom surface of the water distribution channel 704 to divert the water flow horizontally, so that the 5 plastic thread ends can all contact the cooling water.

[0036] See attached Figure 1 , Figure 8 and Fig. 9 In this embodiment, a water delivery pipe 707 is connected between one side of the transfer water tank 705 and the output end of the second water pump 702, so as to realize the nearby distribution of cooling water in the cooling water tank 4, and there is no need to additionally supply water sources to the first water pump 701 and the second water pump 702. A transfer water tank 705 for spraying water toward the leakage hole 602 and a water distribution square pipe 706 connected to the bottom of the transfer water tank 705 are arranged outside the perforated box head 2. Since the water distribution square pipe 706 is downwardly directed toward the leakage hole 602, water can be sprayed on both sides of each plastic thread head to form a water curtain.

[0037] See attached Figure 1 In order to facilitate the smooth passage of multiple strands of plastic thread ends, the guide roller mechanism of this embodiment includes a suspended roller 802 and a lifting roller 803 rotatably installed on the top of the cooling water trough 4 through a bearing seat, and a diving roller 801 rotatably installed inside the cooling water trough 4 through a bearing seat. Since a guide wheel 804 is rotatably installed on the outer surface of the lifting roller 803 with a bearing, when the plastic thread ends are pulled, the plastic thread ends are bypassed by the diving roller 801, the suspended roller 802 and the guide wheel 804 in turn, and the number of diving rollers 801 can be set to two, which are used to guide the plastic thread ends to dive into the cooling water.

[0038] See attached Figure 5 and Figure 6 In this embodiment, an annular support 604 staggered from the leakage hole 602 is welded on the bottom edge of the sliding platform 6, and a bolt 605 connected to the side of the clamp 5 is inserted inside the annular support 604. When the annular support 604 and the bolt 605 are inserted, they are used to hang the clamp 5. As the plastic thread is fed into the clamp 5, the clamp 5 needs to be lifted by hand to pull the plastic thread through. When the annular support 604 and the bolt 605 are separated, the clamp 5 is operated by hand to pull multiple strands of plastic thread through the guide roller mechanism.

[0039] Finally, the plastic thread ends pass through the cooling water from the top of the cooling water tank 4, and the staff can operate the clamp 5 to separate the wiring needle 503 and the limiting concave block 504 to remove 5 strands of plastic thread ends at one time. Due to the cooling water cooling, these plastic thread ends are no longer so hot and can be pulled by hand into the rotary pelletizer, and the plastic wires can be cut using a rotating blade.

[0040] Embodiment 2: The extrusion of flame-retardant plastics generally requires manual pulling of the plastic thread ends, which is a test of the operating experience of the staff. Once the operation is improper, the plastic joints will stick to each other and need to be cut off, resulting in waste. Therefore, based on Example 1, this embodiment provides standardized operating steps to minimize the waste caused by adhesion.

[0041] like Fig.12 As shown, a method for preventing adhesion of a flame retardant plastic edge material recycling extruder comprises the following steps: Step 1: Feeding: The recycled flame-retardant plastic scraps are generally melted in an electric melting furnace, and the molten plastic is guided by a guide pipe and fed into the molding chamber 1 along the feed hopper 101. The screw 3 provided at one end of the molding chamber 1 away from the perforated box head 2 is rotated. Figure 3 As shown, the molten plastic can be extruded in the molding chamber 1 along the axial direction of the screw 3, so that the molten plastic is extruded in a linear shape from the hole of the perforated box head 2; When recycling, these scraps are returned to the site, and the staff classifies them according to their type, color, degree of pollution, etc., and crushes them into smaller particles or fragments for subsequent processing. At the same time, the crushed flame-retardant plastics are cleaned to remove stains, dust and other impurities attached to the surface; Among them, in order to automatically rotate the screw 3, by operating the controller, the power distribution cabinet 10 installed at the bottom of the reducer 9 is powered, so that the motor drive belt of the pulley unit 11 is transmitted at a low speed through the reducer 9, driving the screw 3 to rotate at a low speed, so that the screw 3 pushes the molten plastic in the alignment barrel 102. A cooling fan 12 electrically connected to the power distribution cabinet 10 and a cooling mold box 103 connected to the cooling fan 12 are also installed inside the molding chamber 1. Since the cooling fan 12 is electrically connected to the controller, after the cooling fan 12 is started, cold air is blown toward the cooling mold box 103, which is convenient for taking away the heat on the alignment barrel 102 and preventing the molding chamber 1 from overheating. Step 2, separating the thread ends: Start the second water pump 702 to pump cooling water. Since the water distribution square pipe 706 is downwardly directed to the water leakage hole 602, two water curtains are formed to limit and cool the plastic thread ends on both sides. The filter screen 603 can vertically support the plastic thread ends and leak water, so that multiple plastic thread ends are separated along the inclined arc slide 601; At the same time, the water flow is used to send the plastic thread ends between the wiring needle 503 and the limiting concave block 504, so as to comb the plastic thread ends in the cooling water environment to prevent adhesion, and the traction and passing operation can be completed quickly; Step 3: Clamp the thread ends: Press the outer side of the male clamp plate 501 and the female clamp plate 502 close to the clamp 5 by hand, so as to drive the wiring needle 503 and the limiting concave block 504 to bite the multi-strand plastic thread ends, so as to avoid taking the plastic thread ends by hand; The first elastic member 5031 and the second elastic member 5041 are respectively driven to approach the thread end by the outer side of the male clamping plate 501 and the female clamping plate 502. The arc surface of the first elastic member 5031 and the arc surface of the second elastic member 5041 can push the plastic thread end to the center until the wiring needle 503 and the limiting concave block 504 are engaged with each other to lock the thread end. Step 4: threading: pull the clamp 5 by hand, with both hands alternately, and pass the plastic thread around the diving roller 801, the suspended roller 802 and the guide wheel 804 in turn. The number of diving rollers 801 can be set to two, which are used to guide the plastic thread to dive into the cooling water, and the cooling water sucked by the first water pump 701 is sprayed along the water distribution channel 704 toward the top of the cooling water tank 4. In addition, there are 5 diversion pipes running through the bottom surface of the water distribution channel 704 to divert the water flow horizontally, so that the 5 plastic thread ends can all contact the cooling water, and their heat is taken away by the cooling water, which can be quickly cooled and formed; Step 5, thread removal: the plastic thread ends pass through the cooling water from the top of the cooling water tank 4, and the staff can operate the clamp 5 to separate the wiring needle 503 and the limiting concave block 504 to remove 5 strands of plastic thread ends at one time. Due to the cooling water cooling, these plastic thread ends are no longer so hot and can be pulled by hand into the rotary pelletizer, and the plastic wires are cut using a rotary blade.

[0042] The above is only an optional implementation of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A flame retardant plastic edge material recycling extruder, comprising a molding chamber (1), a feed hopper (101) and a perforated box head (2) for linearly extruding molten plastic, wherein a screw (3) and a driving mechanism for rotating the screw (3) are arranged at one end of the molding chamber (1) away from the perforated box head (2), and characterized in that: Also includes: a cooling water trough (4), the cooling water trough (4) being arranged in a folded shape on a side of the molding chamber (1) away from the driving mechanism, a flushing mechanism being installed outside the cooling water trough (4), and a guide roller mechanism being installed on the top of the cooling water trough (4); A clamp (5), the clamp (5) being used to pull the plastic thread ends through the guide roller mechanism, a male clamp plate (501) and a female clamp plate (502) being slidably mounted on both sides of the clamp (5), a wire arrangement needle head (503) and a limiting concave block (504) being staggered between the outer sides of the male clamp plate (501) and the outer sides of the female clamp plate (502), when molten plastic is extruded, the wire arrangement needle head (503) and the limiting concave block (504) are used to bite the multiple strands of plastic thread ends, so that the plastic thread ends are prevented from being taken by hand, and the wire arrangement needle head (503) and the limiting concave block (504) are separated to remove the multiple strands of plastic thread ends at one time; A slide table (6), the slide table (6) is arranged on one side of the box head with holes (2) and is used to hang the clip (5). The top of the slide table (6) is provided with an arc-shaped slideway (601), leakage holes (602) located on both sides of the arc-shaped slideway (601), and a filter screen (603) installed inside the leakage hole (602). At the same time, water is sprayed toward the leakage hole (602) through the flushing mechanism to form a water curtain to limit and cool the plastic thread ends, so that multiple strands of plastic thread ends are separated along the inclined arc-shaped slideway (601), and the water flow sends the plastic thread ends into between the wiring needle head (503) and the limiting concave block (504).

2. A flame retardant plastic edge material recovery extruder according to claim 1, characterized in that: The bottom edge of the slide table (6) is fixed with an annular support (604) staggered from the water leakage hole (602), and a bolt (605) connected to the side of the clip (5) is inserted inside the annular support (604). When the annular support (604) and the bolt (605) are inserted, they are used to suspend the clip (5). When the annular support (604) and the bolt (605) are separated, the clip (5) is manually operated to pull multiple plastic thread ends through the guide roller mechanism.

3. A flame retardant plastic edge material recovery extruder according to claim 1, characterized in that: The clip (5) comprises a T-shaped handle (505) and a hollow frame (506), wherein the T-shaped handle (505) comprises an integrally formed horizontal grip handle and a vertical stop handle, and the vertical stop handle is provided with a guide hole (5051), wherein the guide hole (5051) is used for the sliding of the male clamping plate (501) and the female clamping plate (502), and the limiting concave block (504) passes through the portion of the hollow frame (506) and is used for separating multiple strands of plastic thread ends.

4. A flame retardant plastic edge material recovery extruder according to claim 1, characterized in that: A first elastic member (5031) is fixed to the arc surface of the wire arranging needle head (503) close to the limiting concave block (504), and a second elastic member (5041) is fixed to the arc surface of the limiting concave block (504) close to the wire arranging needle head (503).

5. The flame retardant plastic edge material recovery extruder according to claim 1, characterized in that: The flushing mechanism comprises a first water pump (701) and a second water pump (702); a cooling water pipe (703) connected to one end of the cooling water trough (4) is installed at a water inlet of the first water pump (701) and a cooling water pipe (703) connected to one end of the cooling water trough (4); the other end of the cooling water trough (4) is inclined and a water distribution channel (704) connected to an output end of the first water pump (701) is installed at the other end of the cooling water trough (4).

6. A flame retardant plastic edge material recovery extruder according to claim 5, characterized in that: The perforated box head (2) is provided with a transfer water tank (705) for spraying water toward the water leakage hole (602) and a water distribution square pipe (706) connected to the bottom of the transfer water tank (705), and a water delivery pipe (707) is connected between one side of the transfer water tank (705) and the output end of the second water pump (702).

7. The flame retardant plastic edge material recovery extruder according to claim 1, characterized in that: The guide roller mechanism comprises a suspended roller (802) and a lifting roller (803) rotatably mounted on the top of the cooling water trough (4); a submersible roller (801) is rotatably mounted inside the cooling water trough (4); and a guide wheel (804) is rotatably mounted on the outer surface of the lifting roller (803); when the plastic thread end is pulled, the plastic thread end is passed around the submersible roller (801), the suspended roller (802) and the guide wheel (804) in sequence.

8. The flame retardant plastic edge material recovery extruder according to claim 3, characterized in that: A first pressing handle (5011) is fixed to one end of the male clamping plate (501) that passes through the guide hole (5051), and a second pressing handle (5021) is fixed to one end of the female clamping plate (502) that passes through the guide hole (5051).

9. The flame retardant plastic edge material recovery extruder according to claim 1, characterized in that: The driving mechanism comprises a reducer (9) connected to one end of the screw rod (3), a power distribution cabinet (10) is installed at the bottom of the reducer (9), a pulley unit (11) electrically connected to the power distribution cabinet (10) is connected to the outer side of the reducer (9), and a cooling fan (12) electrically connected to the power distribution cabinet (10) is installed inside the molding chamber (1).

10. An anti-adhesion method for a flame retardant plastic edge material recycling extruder, applied to the flame retardant plastic edge material recycling extruder according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, feeding: the recycled flame-retardant plastic scraps are placed in an electric melting furnace for melting, and the molten plastic is guided along the feed hopper (101) into the molding chamber (1), and the screw (3) is rotated by a driving mechanism to extrude the molten plastic in the molding chamber (1), so that the molten plastic is extruded in a linear shape from the holes of the perforated box head (2); Step 2, separating the thread ends: starting the flushing mechanism to spray water toward the water leakage hole (602), forming two water curtains to limit and cool the plastic thread ends on both sides, while the filter screen (603) vertically supports the plastic thread ends and leaks water, so that multiple strands of plastic thread ends are separated along the inclined arc slideway (601), and the water flow sends the plastic thread ends between the wire arrangement needle head (503) and the limiting concave block (504), so as to comb the plastic thread ends in the cooling water environment to prevent adhesion; Step 3, clamping the thread ends: by pressing the outer side of the male clamping plate (501) and the female clamping plate (502) close to the clamp (5), the wiring needle (503) and the limiting concave block (504) are driven to bite the multiple strands of plastic thread ends until the wiring needle (503) and the limiting concave block (504) bite each other, locking the thread ends, and preventing the plastic thread ends from being taken by hand; Step 4, threading the plastic thread: manually pull the clamp (5) to pass the plastic thread around the guide roller mechanism to guide the plastic thread into the cooling water, and spray it toward the top of the cooling water tank (4) through the flushing mechanism to divert the water flow horizontally, so that multiple strands of plastic thread are in contact with the cooling water, and their heat is taken away by the cooling water, and they are quickly cooled and formed; Step 5: detaching the thread ends: pass the plastic thread ends through the cooling water from the top of the cooling water tank (4), manually operate the clamp (5) to separate the wiring needle (503) and the limiting concave block (504), so as to remove multiple strands of plastic thread ends at one time, and manually pull them into the rotary pelletizer, and use the rotary blade to cut the plastic thread.

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