Green recycling type wire and cable flame-retardant plastic extrusion method

Abstract

The application discloses a kind of green recycling type electric wire and cable flame-retardant plastic extrusion methods, belong to plastic extrusion technical field.A kind of green recycling type electric wire and cable flame-retardant plastic extrusion method, comprising the following steps: S1, the extruder equipment is debugged, and the heating temperature and pressure value corresponding to different plastic particles are debugged out;S2, set the heating temperature of each section of extruder equipment;S3, the plastic particle raw material is placed in the hopper of extruder equipment, and the plastic particle raw material is crushed and mixed;S4, makes the extruder equipment melt extrusion to the plastic raw material after crushing and mixing;The application can be crushed and mixed on plastic raw material feeding, to improve plastic melting rate and plastic extrusion effect, ensure plastic production quality.

Description

Technical Field

[0001] This invention relates to the field of plastic extrusion technology, and in particular to a green and recyclable flame-retardant plastic extrusion method for wires and cables. Background Technology

[0002] When recycling wires and cables, the flame-retardant plastic protective sheath is separated from the wire core. The wire core and the flame-retardant plastic protective sheath are recycled separately. The flame-retardant plastic protective sheath is remade into plastic granules and processed through an extruder. An extruder is a type of plastic machinery, originating in the 18th century. Based on the angle between the material flow direction at the die head and the screw centerline, extruder heads can be divided into right-angle heads and angled heads, etc. Screw extruders rely on the pressure and shear force generated by the rotating screw to fully plasticize and uniformly mix the material, which is then shaped through a die.

[0003] Existing plastic extruders generally use plastic granules for melt extrusion. However, in actual operation, the temperature required to melt larger plastic granules is high, resulting in high energy consumption of the equipment. Furthermore, if the plastic granules are not completely melted, it can easily affect the plastic extrusion effect and the quality of plastic production. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a green and recyclable flame-retardant plastic extrusion method for wires and cables.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A green, recyclable flame-retardant plastic extrusion method for wires and cables includes the following steps:

[0007] S1. Adjust the extruder equipment to determine the heating temperature and pressure values ​​corresponding to different plastic particles;

[0008] S2. Set the heating temperature for each section of the extruder equipment;

[0009] S3. Place the plastic granule raw material into the feed hopper of the extruder equipment, crush and mix the plastic granule raw material;

[0010] S4. The extruder is used to melt and extrude the crushed and mixed plastic raw materials.

[0011] Preferably, the extruder includes a base and a barrel disposed on top of the base. An extrusion screw is rotatably disposed inside the barrel. A feed hopper is fixedly disposed on top of the barrel and communicates with it. A mounting plate is fixedly disposed on top of the base. A drive motor is fixedly disposed on the mounting plate. The output shaft of the drive motor is connected to a drive shaft for driving the extrusion screw to rotate. A crushing component for crushing raw materials and a mixing component for mixing raw materials are disposed inside the feed hopper. A transmission component is disposed between the mixing component and the drive shaft.

[0012] Preferably, the feed hopper includes a feed pipe communicating with the feed cylinder, a mixing shell fixed to the top of the feed pipe, and a crushing shell fixed to the top of the mixing shell. The crushing component is disposed inside the crushing shell, and the mixing component is disposed inside the mixing shell.

[0013] Preferably, the mixing assembly includes a rotating component rotatably connected inside the mixing shell and a mixing plate disposed on the rotating component, and the transmission assembly includes a synchronous pulley disposed on the rotating component and the drive shaft, with a synchronous belt disposed between the two synchronous pulleys.

[0014] Preferably, the rotating component includes a rotating rod connected to a synchronous pulley and a sleeve slidably connected to the outside of the rotating rod. The mixing plate is fixed on the sleeve, a top rod is fixed on the rotating rod, a force-bearing block is rotatably connected to the sleeve, and an extrusion slope that moves against the top rod is provided on the force-bearing block. An elastic telescopic rod is provided between the force-bearing block and the outer wall of the mixing shell.

[0015] Preferably, the crushing assembly includes a support plate fixed to the bottom of the crushing shell, an upper rotating rod rotatably connected to the support plate, and a plurality of crushing blades disposed on the upper rotating rod.

[0016] Preferably, a reciprocating screw is provided on the outer side of the upper rotating rod, a sleeve is threadedly connected to the reciprocating screw, a limit telescopic rod is provided between the sleeve and the support plate, and a filter screen cylinder is fixedly provided on the outer side of the sleeve and slidably connected to the crushing shell.

[0017] Preferably, a working shell is fixed inside the mixing shell by a support plate, a main bevel gear is rotatably connected inside the working shell, an upper bevel gear that meshes with the main bevel gear is provided on the upper rotating rod, and the upper bevel gear is slidably connected to the sleeve.

[0018] Preferably, a guide bar is fixed on the sleeve, and guide grooves for sliding of the guide bar are provided on the upper bevel gear and the rotating rod.

[0019] Preferably, the bottom of the working shell is provided with a lower rotating rod rotatably connected to the feed pipe, the top of the lower rotating rod is provided with a lower bevel gear that meshes with the main bevel gear, and the lower rotating rod is provided with a spiral conveying blade.

[0020] Compared with the prior art, the present invention provides a green and recyclable flame-retardant plastic extrusion method for wires and cables, which has the following beneficial effects:

[0021] 1. This green and recyclable flame-retardant plastic extrusion method for wires and cables uses a crushing component to crush the plastic granules during feeding, which facilitates the improvement of plastic melting rate and extrusion effect, and ensures the quality of plastic production.

[0022] 2. This green and recyclable flame-retardant plastic extrusion method for wires and cables uses a mixing component to mix the crushed raw materials, ensuring that the plastic raw materials fed at different times are evenly mixed, thus guaranteeing consistent plastic extrusion quality and further improving the quality of plastic production.

[0023] 3. This green and recyclable flame-retardant plastic extrusion method for wires and cables uses spiral conveying blades in the feed pipe to transport raw materials, preventing the plastic at the bottom of the feed hopper from melting and clogging the bottom of the feed hopper due to excessively high temperature inside the barrel. This ensures orderly feeding of plastic raw materials, avoids interruption of plastic extrusion, and guarantees the quality of plastic production. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the extruder equipment of the present invention;

[0025] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of part A in the middle

[0026] Figure 3 This is a cross-sectional structural diagram of the feed hopper of the present invention;

[0027] Figure 4 For the present invention Figure 3 A partially enlarged structural diagram of section B in the middle;

[0028] Figure 5 This is a schematic diagram of the external structure of the upper rotating rod of the present invention;

[0029] Figure 6 This is a schematic diagram of the rotating component of the present invention;

[0030] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part C in the middle.

[0031] In the diagram: 1. Base; 2. Material cylinder; 3. Mounting plate; 301. Drive motor; 302. Drive shaft; 4. Feed hopper; 401. Feed pipe; 402. Mixing shell; 403. Crushing shell; 5. Rotating component; 501. Rotating rod; 5011. Top rod; 502. Sleeve; 5021. Force block; 5022. Guide bar; 503. Elastic telescopic rod; 6. Mixing plate; 7. Synchronous pulley; 8. Support plate; 801. Upper rotating rod; 802. Crushing blade; 803. Upper bevel gear; 9. Reciprocating screw; 901. Sleeve; 902. Filter screen cylinder; 10. Working shell; 1001. Main bevel gear; 11. Lower rotating rod; 111. Lower bevel gear; 112. Spiral conveyor blade; 12. Guide groove. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example: Refer to Figure 1-7 A green, recyclable flame-retardant plastic extrusion method for wires and cables includes the following steps:

[0036] S1. Adjust the extruder equipment to determine the heating temperature and pressure values ​​corresponding to different plastic particles;

[0037] S2. Set the heating temperature for each section of the extruder equipment;

[0038] S3. Place the plastic granule raw material into the feed hopper 4 of the extruder equipment, and crush and mix the plastic granule raw material.

[0039] S4. The extruder is used to melt and extrude the crushed and mixed plastic raw materials.

[0040] Reference Figure 1 and Figure 3 As a preferred technical solution of the present invention, the extruder includes a base 1 and a barrel 2 disposed on the top of the base 1. An extrusion screw is rotatably disposed inside the barrel 2. A feed hopper 4 is fixedly disposed on the top of the barrel 2 and communicates with the barrel 2. A mounting plate 3 is fixedly disposed on the top of the base 1. A drive motor 301 is fixedly disposed on the mounting plate 3. The output shaft of the drive motor 301 is connected to a drive shaft 302 for driving the extrusion screw to rotate. A crushing component for crushing raw materials and a mixing component for mixing raw materials are disposed inside the feed hopper 4. A transmission component is disposed between the mixing component and the drive shaft 302.

[0041] Specifically, when the extruder is working, the drive motor 301 is controlled to run, and the drive shaft 302 of the drive motor 301 drives the extrusion screw in the barrel 2 to run, so that the extrusion screw squeezes the molten raw material in the barrel 2 out. When the drive shaft 302 rotates, it drives the mixing component and the crushing component to work through the transmission component. When the plastic granule raw material is fed, it is crushed by the crushing component, which facilitates the improvement of the plastic melting rate and the plastic extrusion effect, and ensures the quality of plastic production. The mixing component is used to mix the crushed raw material, so that the plastic raw material fed at different times is evenly mixed, ensuring that the quality of plastic extrusion is consistent, and further improving the quality of plastic production.

[0042] Reference Figure 1 , Figure 2 and Figure 3 As a preferred technical solution of the present invention, the feed hopper 4 further includes a feed pipe 401 that is connected to the feed cylinder 2, a mixing shell 402 fixed on the top of the feed pipe 401, and a crushing shell 403 fixed on the top of the mixing shell 402. The crushing component is disposed in the crushing shell 403, and the mixing component is disposed in the mixing shell 402.

[0043] Furthermore, the mixing assembly includes a rotating component 5 rotatably connected inside the mixing shell 402 and a mixing plate 6 disposed on the rotating component 5. The transmission assembly includes a synchronous pulley 7 disposed on the rotating component 5 and the drive shaft 302, and a synchronous belt is disposed between the two synchronous pulleys 7.

[0044] Specifically, when the drive shaft 302 rotates, it drives the rotating part 5 to rotate through the synchronous wheel 7 and the synchronous belt. When the rotating part 5 rotates, it drives the mixing plate 6 to flip inside the mixing shell 402 to mix the crushed raw materials. This ensures that the plastic raw materials falling at different times are mixed evenly, guaranteeing that the quality of the plastic extrusion is consistent and further improving the quality of plastic production.

[0045] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 As a preferred technical solution of the present invention, the rotating component 5 further includes a rotating rod 501 connected to the synchronous wheel 7 and a sleeve 502 slidably connected to the outside of the rotating rod 501. The mixing plate 6 is fixed on the sleeve 502. A top rod 5011 is fixed on the rotating rod 501. A force-bearing block 5021 is rotatably connected to the sleeve 502. The force-bearing block 5021 has a pressing inclined surface that moves against the top rod 5011. An elastic telescopic rod 503 is provided between the force-bearing block 5021 and the outer wall of the mixing shell 402.

[0046] Specifically, when the rotating rod 501 of the rotating component 5 rotates, it drives the sleeve 502 to rotate. The top rod 5011 on the rotating rod 501 abuts against the pressing slope of the force block 5021, causing the force block 5021 to drive the sleeve 502 to slide relative to the rotating rod 501. The sleeve 502 drives the mixing plate 6 to move, adjusting the rotation range of the mixing plate 6, thereby improving the mixing effect of the plastic raw materials. The elastic telescopic rod 503 extends and retracts freely with the movement of the force block 5021.

[0047] Reference Figure 1-7 As a preferred technical solution of the present invention, the crushing assembly further includes a support plate 8 fixed to the bottom of the crushing shell 403, an upper rotating rod 801 rotatably connected to the support plate 8, and a plurality of crushing blades 802 disposed on the upper rotating rod 801.

[0048] Furthermore, a reciprocating screw 9 is provided on the outer side of the upper rotating rod 801, and a sleeve 901 is threadedly connected to the reciprocating screw 9. A limit telescopic rod is provided between the sleeve 901 and the support plate 8, and a filter screen cylinder 902 is fixedly provided on the outer side of the sleeve 901 and slidably connected in the crushing shell 403.

[0049] Furthermore, a working shell 10 is fixed inside the mixing shell 402 by a support plate. A main bevel gear 1001 is rotatably connected inside the working shell 10. An upper bevel gear 803 that meshes with the main bevel gear 1001 is provided on the upper rotating rod 801. The upper bevel gear 803 is slidably connected to the sleeve 502.

[0050] Furthermore, a guide bar 5022 is fixed on the sleeve 502, and guide grooves 12 for sliding of the guide bar 5022 are provided on the upper bevel gear 803 and the rotating rod 501.

[0051] Specifically, when the sleeve 502 rotates, it drives the main bevel gear 1001 to rotate through the guide bar 5022. When the main bevel gear 1001 rotates, it meshes with the upper bevel gear 803 at the bottom of the upper rotating rod 801. The upper rotating rod 801 drives the reciprocating screw 9 to rotate. The sleeve 901 moves up and down along the axis of the reciprocating screw 9. When the sleeve 901 drives the filter screen cylinder 902 to move up and down, it causes the plastic material inside the filter screen cylinder 902 to shake up and down. The crushing blade 802 on the upper rotating rod 801 crushes and cuts the plastic material that shakes up and down. The plastic that meets the crushing requirements passes through the filter screen cylinder 902 and enters the mixing shell 402. The up and down shaking of the filter screen cylinder 902 can ensure that the plastic that meets the crushing requirements falls quickly, and at the same time, it can make the crushing blade 802 fully crush the plastic material.

[0052] Reference Figure 1 and Figure 3 As a preferred technical solution of the present invention, the bottom of the working shell 10 is provided with a lower rotating rod 11 rotatably connected to the feed tube 401, the top of the lower rotating rod 11 is provided with a lower bevel gear 111 meshing with the main bevel gear 1001, and the lower rotating rod 11 is provided with a spiral conveying blade 112.

[0053] Specifically, when the sleeve 502 drives the main bevel gear 1001 to rotate, it meshes with the lower bevel gear 111 on the lower rotating rod 11. The lower rotating rod 11 drives the spiral conveyor blades 112 to convey the raw materials, preventing the plastic at the bottom of the feed hopper 4 from melting and blocking the bottom of the feed hopper 4 due to the excessive temperature inside the barrel 2. This ensures that the plastic raw materials are conveyed in an orderly manner, avoids interruption of plastic extrusion, and ensures the quality of plastic production.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A green, recyclable, flame-retardant plastic extrusion method for wires and cables, characterized in that, Includes the following steps: S1. Adjust the extruder equipment to determine the heating temperature and pressure values ​​corresponding to different plastic particles; S2. Set the heating temperature for each section of the extruder equipment; S3. Place the plastic granule raw material into the feed hopper (4) of the extruder equipment, crush and mix the plastic granule raw material; S4. The extruder equipment melts and extrudes the crushed and mixed plastic raw materials. The extruder includes a base (1) and a barrel (2) disposed on the top of the base (1). An extrusion screw is rotatably disposed inside the barrel (2). The feed hopper (4) is fixed on the top of the barrel (2) and communicates with the barrel (2). An mounting plate (3) is fixed on the top of the base (1). A drive motor (301) is fixed on the mounting plate (3). The output shaft of the drive motor (301) is connected to a drive shaft (302) for driving the extrusion screw to rotate. A crushing component for crushing raw materials and a mixing component for mixing raw materials are disposed inside the feed hopper (4). A transmission component is disposed between the mixing component and the drive shaft (302). The feed hopper (4) includes a feed pipe (401) that is connected to the feed cylinder (2), a mixing shell (402) fixed on the top of the feed pipe (401), and a crushing shell (403) fixed on the top of the mixing shell (402). The crushing component is disposed in the crushing shell (403), and the mixing component is disposed in the mixing shell (402). The mixing assembly includes a rotating part (5) rotatably connected inside the mixing shell (402) and a mixing plate (6) disposed on the rotating part (5). The transmission assembly includes a synchronous pulley (7) disposed on the rotating part (5) and the drive shaft (302), and a synchronous belt is disposed between the two synchronous pulleys (7). The rotating component (5) includes a rotating rod (501) connected to the synchronous wheel (7) and a sleeve (502) slidably connected to the outside of the rotating rod (501). The mixing plate (6) is fixed on the sleeve (502). A top rod (5011) is fixed on the rotating rod (501). A force-bearing block (5021) is rotatably connected to the sleeve (502). An extrusion slope that moves against the top rod (5011) is opened on the force-bearing block (5021). An elastic telescopic rod (503) is provided between the force-bearing block (5021) and the outer wall of the mixing shell (402). The crushing assembly includes a support plate (8) fixed to the bottom of the crushing shell (403), an upper rotating rod (801) rotatably connected to the support plate (8), and a plurality of crushing blades (802) provided on the upper rotating rod (801). A reciprocating screw (9) is provided on the outside of the upper rotating rod (801), and a sleeve (901) is threaded on the reciprocating screw (9). A limit telescopic rod is provided between the sleeve (901) and the support plate (8). A filter cylinder (902) that is slidably connected to the crushing shell (403) is fixed on the outside of the sleeve (901). The mixing shell (402) is fixedly provided with a working shell (10) by a support plate. The working shell (10) is rotatably connected with a main bevel gear (1001). The upper rotating rod (801) is provided with an upper bevel gear (803) that meshes with the main bevel gear (1001). The upper bevel gear (803) is slidably connected with the sleeve (502). The bottom of the working shell (10) is provided with a lower rotating rod (11) rotatably connected in the feed pipe (401), the top of the lower rotating rod (11) is provided with a lower bevel gear (111) meshing with the main bevel gear (1001), and the lower rotating rod (11) is provided with a spiral conveying blade (112).

2. The green recyclable flame-retardant plastic extrusion method for wires and cables according to claim 1, characterized in that, The sleeve (502) is fixed with a guide bar (5022), and the upper bevel gear (803) and the rotating rod (501) are provided with guide grooves (12) for sliding of the guide bar (5022).

Images