Plastic extruder for cable processing

Abstract

The invention relates to the technical field of cable processing, in particular to a plastic extruder for cable processing, which comprises a casing, a shaping module fixed at one end of the casing, a feeding tank fixed at the upper side of the other end of the casing and a melting device arranged in the casing, and a mounting cavity is formed in one side, close to the shaping module, of the casing. An extrusion assembly is arranged in the mounting cavity and comprises a material guide shell, a plurality of mounting frames, an extrusion plate and an air guide valve pipe, the material guide shell is mounted in the mounting cavity, the mounting cavity and the material guide shell are each in a circular truncated cone shape, the area of the end, close to the molding module, of the material guide shell is small, and a feeding opening is formed in the end, close to the material melting device, of the material guide shell; and the gas guide valve pipe is fixedly connected to the upper end of the material guide shell and used for guiding out gas. Bubbles in the colloid can be cut and transferred, and the stability of the exported colloid is ensured, so that the surface of a cable is smooth.

Description

Technical Field

[0001] The invention relates to the technical field of cable processing, and in particular to a plastic extruder used for cable processing. Background Art

[0002] The plastic extruder for cable processing is an indispensable equipment in the production process of wires and cables. It can evenly cover the molten plastic on the conductor or cable core to form an insulation layer or sheath layer.

[0003] The Chinese patent with publication number CN114255935B discloses a plastic extruder for cable processing, including a frame and a first extruder arranged on the frame, a first cable mold arranged on the frame, and a plurality of first injection cavities connected to the first extruder, a stranded wire assembly arranged on the frame, a second extruder arranged on the frame, and a second cable mold arranged on the frame. The invention solves the problem that in the related art, the cables of different colors need to be made in batches before being wrapped and coated as a whole, which causes a waste of resources.

[0004] During the melting process, due to high temperature heating, some impurities are vaporized, causing bubbles to be mixed into the molten liquid. These bubbles cannot be effectively removed, causing deformation or micro-cracks on the cable surface, making the cable surface rough. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that bubbles cannot be effectively removed, which causes deformation or microcracks on the cable surface and makes the cable surface rough, and to propose a plastic extruder for cable processing.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A plastic extruder for cable processing, comprising a housing, a shaping module fixed at one end of the housing, a feed tank fixed at the upper side of the other end of the housing, and a melting device arranged inside the housing, wherein a mounting cavity is provided inside the housing near the shaping module, an extrusion assembly is arranged inside the mounting cavity, and the extrusion assembly is used to extrude colloid and discharge bubbles; The extrusion assembly includes a material guide shell, a plurality of mounting brackets, an extrusion plate and an air guide valve pipe. The material guide shell is installed inside the mounting cavity. The mounting cavity and the material guide shell are both truncated cone-shaped, and the area of ​​the end close to the shaping module is small. The material guide shell is provided with a feed port at one end close to the melting device, and a discharge port at one end close to the shaping module. One end of the plurality of mounting brackets is fixedly connected to the discharge port of the material guide shell, and the other end is fixedly connected to the extrusion plate through a rotating seat. The air guide valve pipe is fixedly connected to the upper end of the material guide shell for discharging gas. The extrusion plate is a frustum-shaped plate, and the side with a smaller bottom surface is close to the melting device. An extrusion ring is provided between the edge of the extrusion plate and the inner wall of the material guide shell, and the extrusion ring is used to extrude the colloid; A foam breaking component is arranged at the middle part of one side of the extrusion plate away from the mounting frame, and the foam breaking component is used for foam breaking treatment of the colloid.

[0007] Preferably, a rotating assembly is provided at the bottom of the housing, and the rotating assembly is used to drive the melting device to rotate.

[0008] Preferably, the rotating assembly includes a motor and a linkage module, the motor is fixedly mounted on the bottom of the casing, the linkage module is fixedly mounted on the side of the casing, connected to the output end of the motor, and used to rotate the melting device.

[0009] Preferably, the melting device includes a melting tube, a spiral blade, a plurality of heating rings and a plurality of heating modules. The melting tube is rotatably installed inside the casing, and the spiral blade is fixedly installed inside the melting tube to drive the colloid to move. The plurality of heating rings are equidistantly arranged on the melting tube, and the plurality of heating modules are respectively fixedly installed at the bottom of the plurality of heating rings.

[0010] Preferably, the melt tube is respectively configured as a feeding section, a plasticizing section and a homogenizing section, and is distributed sequentially from one end close to the feed tank to the other end. The discharge port at one end of the melt tube close to the extrusion assembly is configured as a truncated cone, and the outlet diameter becomes smaller.

[0011] Preferably, the bubble breaking assembly includes a mounting column, a plurality of blades and a plurality of bubble breaking needles, the mounting column is vertically fixedly connected to a side of the extrusion plate close to the melting device, the plurality of blades are annularly fixedly connected to the side of the mounting column, and the plurality of bubble breaking needles are evenly fixedly connected to the plurality of blades for bubble breaking treatment.

[0012] Preferably, the end of the mounting column is fixedly connected with a linkage stirring assembly, and the linkage stirring assembly includes a connecting rod, a plurality of side rods and a plurality of stirring rods. The connecting rod is fixedly connected to the end of the mounting column, a plurality of side rods are annularly fixedly connected between the top end of the connecting rod and the inner wall of the melt tube, and a plurality of stirring rods are annularly fixedly connected to the end of the connecting rod.

[0013] Preferably, a filter assembly is disposed inside the material guide shell, and the filter assembly is used to filter impurities in the colloid multiple times.

[0014] Preferably, the filter assembly includes a filter ring, a plurality of filter plates and a baffle, the filter ring is fixedly connected to the edge of the extrusion plate, a plurality of the filter plates are fixedly installed between a plurality of mounting frames, the baffle is fixedly connected to the bottom of one side of the material guide shell close to the shaping module, and is located between the material guide shell and the extrusion plate to block impurities at the bottom, and the filter ring, filter plates and baffles are all provided with filter holes.

[0015] Preferably, a plurality of collecting strips are annularly fixedly connected to the edge of the extrusion plate, and a collecting space is provided inside the collecting strips for collecting impurities.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. After the melted colloid is introduced from the melting device into the extrusion assembly, the truncated cone-shaped extrusion plate will guide the colloid to the edge. The pressure generated by the extrusion of the colloid will squeeze the bubbles in the colloid to the outside, accelerate the upward movement of the gas, and accumulate at the position of the air guide valve tube. When the air pressure reaches a certain threshold, the gas is exported through the air guide valve tube to ensure the normal flow of the internal colloid. The present invention can cut and transfer the bubbles inside the colloid to ensure the stability of the exported colloid, thereby making the cable surface smooth; 2. As the material melts, it is plasticized and homogenized. The temperature in the homogenization stage is the highest, so the radial pressure and axial pressure on the plastic are the largest in this stage, which makes the melt compact and dense, so that the polymer that has not been plasticized in the melting stage is plasticized in this stage, thus eliminating the particles and making the plastic fully and evenly plasticized. 3. When the molten colloid hits the blade, it will move along the inclined surface of the blade. The rotating blade will drive the bubble breaking needle to rotate, so that the bubble breaking needle can cut and separate the bubbles in the colloid, thereby separating the large bubbles into a large number of small bubbles. The small bubbles reduce the negative impact of the bubbles in the shaping process; 4. The colloid is diffused and separated in all directions through the truncated cone-shaped extrusion plate, and the flowing colloid is filtered through the filter ring set on the edge of the extrusion plate to filter the impurities inside the filter ring. After the colloid is squeezed, it is exported through the discharge port. During the export process, the impurities that have not been filtered out in the colloid will be filtered again, thereby reducing the impurities inside the exported colloid; 5. Multiple filter layers can reduce the filtering pressure of a single-layer filter, extend the service life of the filter layer, improve the filtering effect, and ensure a smooth surface. 6. After being filtered, the impurities inside the filter ring will move to the inside of the filter screen with the flow of the colloid. During the rotation of the extrusion plate, multiple collecting bars are driven to rotate, so that the impurities that fall to the bottom after filtration are collected by the collecting bars. At the same time, due to the extrusion of the colloid during the rotation process, the impurities will not fall, ensuring the collection of the impurities, facilitating the cleaning of the impurities, and reducing the impurities flowing inside the guide shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural schematic diagram of a plastic extruder for cable processing proposed by the present invention; Figure 2 This is a schematic diagram of the back structure of a plastic extruder for cable processing proposed by the present invention; Figure 3 This is a schematic cross-sectional structure diagram of a plastic extruder for cable processing proposed by the present invention; Figure 4 This is a schematic structural diagram of a melting device of a plastic extruder for cable processing proposed by the present invention; Figure 5 This is a schematic cross-sectional structure diagram of an extrusion assembly of a plastic extruder for cable processing proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a material guide shell of a plastic extruder for cable processing proposed by the present invention; Figure 7 This is a schematic diagram of the structure of a foam breaking component of a plastic extruder for cable processing proposed by the present invention; Figure 8 This is a schematic diagram of the position structure of a mounting frame of a plastic extruder for cable processing proposed by the present invention; Fig. 9 The present invention is a schematic diagram of the internal structure of a material guide shell of a plastic extruder for cable processing.

[0018] In the figure: 1. casing; 2. shaping module; 3. feed tank; 4. melting device; 41. melting tube; 42. spiral blade; 43. heating ring; 44. heating module; 5. extrusion assembly; 51. material guide shell; 52. mounting frame; 53. extrusion plate; 54. air guide valve tube; 6. bubble breaking assembly; 61. mounting column; 62. blade; 63. bubble breaking needle; 7. rotating assembly; 71. motor; 72. linkage module; 8. linkage stirring assembly; 81. connecting rod; 82. side rod; 83. stirring rod; 9. filtering assembly; 91. filtering ring; 92. filtering plate; 93. baffle; 10. collecting strip; 11. extrusion ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] The terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not used to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of the present invention without substantially changing the technical content.

[0021] Reference Figure 1-Figure 9A plastic extruder for cable processing includes a housing 1, a shaping module 2 fixed at one end of the housing 1, a feed tank 3 fixed at the upper side of the other end of the housing 1, and a melting device 4 arranged inside the housing 1. The shaping module 2 includes an extrusion head and an extrusion transverse cavity in the prior art, which is used to extrude the molten plastic and then plasticize it. An installation cavity is opened inside the housing 1 on one side close to the shaping module 2, and an extrusion component 5 is arranged inside the installation cavity. The extrusion component 5 is used to extrude the colloid and discharge bubbles. The extrusion assembly 5 includes a material guide shell 51, a plurality of mounting brackets 52, an extrusion plate 53 and a gas guide valve pipe 54. The material guide shell 51 is installed inside the mounting cavity. The mounting cavity and the material guide shell 51 are both truncated cone-shaped, and the area of ​​the end close to the shaping module 2 is small. The material guide shell 51 is provided with a feed port at one end close to the melting device 4, and a discharge port at one end close to the shaping module 2. One end of the plurality of mounting brackets 52 is fixedly connected to the discharge port of the material guide shell 51, and the other end is fixedly connected to the extrusion plate 53 through a rotating seat. The gas guide valve pipe 54 is fixedly connected to the upper end of the material guide shell 51 for discharging gas. The extrusion plate 53 is a truncated cone-shaped plate, and the side with a smaller bottom surface is close to the melt device 4. An extrusion ring 11 is provided between the edge of the extrusion plate 53 and the inner wall of the material guide shell 51, and the extrusion ring 11 is used to extrude the colloid; A bubble breaking component 6 is disposed at the middle of one side of the squeezing plate 53 away from the mounting frame 52 , and the bubble breaking component 6 is used for bubble breaking treatment of the colloid.

[0022] In the embodiment of the above technical solution, after the melted colloid is introduced from the inside of the melt device 4 into the inside of the extrusion component 5, the truncated cone-shaped extrusion plate 53 will guide the colloid to the edge, and the pressure generated by the extrusion of the colloid will squeeze the bubbles in the colloid to the outside. At the same time, the bubble breaking component 6 will break the bubbles, accelerate the upward movement of the gas, and accumulate at the position of the air guide valve pipe 54. When the air pressure reaches a certain threshold, the gas is exported through the air guide valve pipe 54, thereby ensuring the normal flow of the internal colloid. The present invention can cut and transfer the bubbles inside the colloid to ensure the stability of the exported colloid, thereby making the cable surface smooth.

[0023] The preferred technical solution in this embodiment is: Reference Figure 1-3 A rotating assembly 7 is provided at the bottom of the casing 1, and the rotating assembly 7 is used to drive the melting device 4 to rotate; the rotating assembly 7 includes a motor 71 and a linkage module 72, the motor 71 is fixedly installed at the bottom of the casing 1, and the linkage module 72 is fixedly installed on the side of the casing 1, connected to the output end of the motor 71, and used to rotate the melting device 4.

[0024] The motor 71 drives the linkage module 72 to rotate. The linkage module 72 is an existing technology for linking the upper and lower devices. The linkage gear inside the linkage module 72 drives the melting device 4 to rotate from the bottom side, so that the melting device 4 rotates, and the raw materials inside the melting device 4 are heated and melted while moving toward the shaping module 2.

[0025] Reference Figure 4 The melting device 4 includes a melting tube 41, a spiral sheet 42, a plurality of heating rings 43 and a plurality of heating modules 44. The melting tube 41 is rotatably mounted inside the housing 1, and the spiral sheet 42 is fixedly mounted inside the melting tube 41 to drive the colloid to move. The plurality of heating rings 43 are equidistantly sleeved on the melting tube 41, and the plurality of heating modules 44 are respectively fixedly mounted on the bottom of the plurality of heating rings 43; The melt pipe 41 is respectively configured as a feeding section, a plasticizing section and a homogenizing section, and is distributed sequentially from one end close to the feed tank 3 to the other end. The outlet of the melt pipe 41 close to the extrusion assembly 5 is configured as a truncated cone, and the outlet diameter becomes smaller.

[0026] After the feeding tank 3 completes the feeding, the material is introduced from the feeding section of the melting tube 41, and the heating module 44 is controlled to heat the heating ring 43, so that the material inside the melting tube is melted. During the melting process, the rotating spiral piece 42 drives the material to move. As the material melts, the material is plasticized and homogenized. The temperature in the homogenization stage is the highest, so the radial pressure and axial pressure on the plastic in this stage are the largest, which makes the melt compacted and dense, so that the polymer that has not been plasticized in the melting section is completely plasticized in this section, so that the particles are finally eliminated and the plastic is fully and evenly plasticized. Furthermore, the spiral sheet 42 is not provided at the end of the melting tube 41 close to the extrusion assembly 5, so that the end of the melting tube 41 has a certain heating space, which slows down the moving speed of the unmelted particles, thereby ensuring the melting effect of the unmelted particles.

[0027] Reference Figure 7 The bubble breaking component 6 includes a mounting column 61, a plurality of blades 62 and a plurality of bubble breaking needles 63. The mounting column 61 is vertically fixedly connected to a side of the extrusion plate 53 close to the melting device 4. The plurality of blades 62 are annularly fixedly connected to the side of the mounting column 61. The plurality of bubble breaking needles 63 are evenly fixedly connected to the plurality of blades 62 for bubble breaking treatment.

[0028] During the heating and melting process, the gases mixed in during feeding and the gases generated by the vaporization of impurities will be mixed inside the colloid. If these gases are not treated, they will seriously affect the appearance quality of the cable. The bubbles on the surface may cause the physical properties of the colloid product, such as strength, hardness, and wear resistance, to decrease, thus affecting its service life and reliability.

[0029] When the molten colloid hits the blade 62, it will move along the inclined surface of the blade 62. During the movement, the rotating blade 62 will drive the bubble breaking needle 63 to rotate, so that the bubbles in the colloid are cut and separated by the bubble breaking needle 63, thereby separating the large bubbles into a large number of small bubbles. The small bubbles reduce the negative impact of the bubbles in the shaping process. The small bubbles are driven by the flowing colloid to move to the edge of the extrusion plate 53. In the process of moving upward, the small bubbles accumulate inside the gas guide valve tube 54. When the gas is collected to the moving degree, the gas intake is discharged.

[0030] Reference Figure 7-8 The end of the mounting column 61 is fixedly connected with a linkage stirring assembly 8, and the linkage stirring assembly 8 includes a connecting rod 81, multiple side rods 82 and multiple stirring rods 83. The connecting rod 81 is fixedly connected to the end of the mounting column 61, and multiple side rods 82 are annularly fixedly connected between the top of the connecting rod 81 and the inner wall of the melt tube 41, and multiple stirring rods 83 are annularly fixedly connected to the end of the connecting rod 81.

[0031] The mounting column 61 and the melt tube 41 are fixedly connected by the connecting rod 81 and the side rod 82. When the melt tube 41 rotates, the connecting rod 81 drives the mounting column 61 to rotate, thereby driving the plurality of blades 62 to rotate, thereby increasing the defoaming speed of the bubble-breaking needles 63 on the blades 62. At the same time, the inclined blades 62 push the colloid outward, thereby accelerating the speed at which the colloid is discharged from the extrusion ring 11, thereby ensuring the efficiency of plastic extrusion.

[0032] When some particles are not completely melted in the homogenization section, the particles are stirred by the stirring rod 83 rotating along with the melting tube 41, thereby accelerating the melting effect of the particles and ensuring the melting of the plastic.

[0033] Reference Figure 7-9 The material guide shell 51 is provided with a filter assembly 9 inside, and the filter assembly 9 is used to filter impurities in the colloid multiple times; The filter assembly 9 includes a filter ring 91, multiple filter discs 92 and a baffle 93. The filter ring 91 is fixedly connected to the edge of the extrusion plate 53. The multiple filter discs 92 are fixedly installed between multiple mounting frames 52. The baffle 93 is fixedly connected to the bottom of one side of the material guide shell 51 close to the shaping module 2, and is located between the material guide shell 51 and the extrusion plate 53 to block impurities at the bottom. The filter ring 91, the filter disc 92 and the baffle 93 are all provided with filter holes.

[0034] When some refractory impurities in the colloid cannot melt at the high temperature stage, if the impurities are not cleaned, impurities, small crystal points and small particles will appear on the cable surface after molding. When the impurities enter the extrusion component 5, they need to be filtered to reduce the extraction of impurities.

[0035] After the colloid is introduced into the guide shell 51 from the feed port, the colloid is diffused and separated in all directions by the truncated cone-shaped extrusion plate 53, and the flowing colloid is filtered by the filter ring 91 arranged on the edge of the extrusion plate 53, and the impurities are filtered inside the filter ring 91. After the colloid is squeezed, it is discharged through the discharge port. During the discharge process, the impurities in the colloid that have not been filtered out will be filtered again, thereby reducing the impurities inside the discharged colloid.

[0036] When impurities fall into the guide shell 51 during the filtering process, the fluidity of the colloid will drive the colloid to move toward the discharge port, and the impurities accumulated below will be blocked and collected by the baffle 93, thereby reducing the impact of the impurities on the filter plate 92 and reducing the flow of filtered impurities inside the guide shell 51.

[0037] Multiple filter layers can reduce the filtering pressure of a single-layer filter, extend the service life of the filter layer, improve the filtering effect, and ensure a smooth shaped surface.

[0038] Reference Fig. 9 A plurality of collecting strips 10 are fixedly connected to the edge of the extrusion plate 53 in an annular shape, and a collecting space is provided inside the collecting strips 10 for collecting impurities.

[0039] After being filtered, the impurities inside the filter ring 91 will move toward the inside of the filter screen as the colloid flows. During the rotation of the extrusion plate 53, the multiple collecting strips 10 are driven to rotate, so that the impurities that fall to the bottom after filtering are collected by the collecting strips 10. At the same time, during the rotation process, the impurities will not fall due to the extrusion of the colloid, thereby ensuring the collection of the impurities, facilitating the cleaning of the impurities, and reducing the impurities flowing inside the guide shell 51.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic extruder for cable processing, comprising a housing (1), a shaping module (2) fixed to one end of the housing (1), a feed tank (3) fixed to the upper side of the other end of the housing (1), and a melting device (4) arranged inside the housing (1), characterized in that: A mounting cavity is provided inside the housing (1) on one side close to the shaping module (2), and an extrusion component (5) is arranged inside the mounting cavity. The extrusion component (5) is used to extrude the colloid and discharge bubbles. The extrusion assembly (5) comprises a material guide shell (51), a plurality of mounting frames (52), an extrusion plate (53) and a gas guide valve tube (54); the material guide shell (51) is mounted inside the mounting cavity; the mounting cavity and the material guide shell (51) are both truncated cone-shaped, and the area of ​​the end close to the shaping module (2) is small; the material guide shell (51) has a material feed port at one end close to the melting device (4), and a material discharge port at one end close to the shaping module (2); one end of the plurality of mounting frames (52) is fixedly connected to the material discharge port of the material guide shell (51), and the other end is fixedly connected to the extrusion plate (53) via a rotating seat; the gas guide valve tube (54) is fixedly connected to the upper end of the material guide shell (51) and is used to discharge gas; The extrusion plate (53) is a truncated cone-shaped plate, and the side with a smaller bottom surface is close to the melting device (4). An extrusion ring (11) is provided between the edge of the extrusion plate (53) and the inner wall of the material guide shell (51), and the extrusion ring (11) is used to extrude the colloid; A foam breaking component (6) is provided at the middle of one side of the extrusion plate (53) away from the mounting frame (52), and the foam breaking component (6) is used for foam breaking treatment of colloid.

2. A plastic extruder for cable processing according to claim 1, characterized in that: A rotating assembly (7) is provided at the bottom of the casing (1), and the rotating assembly (7) is used to drive the melting device (4) to rotate.

3. A plastic extruder for cable processing according to claim 2, characterized in that: The rotating assembly (7) comprises a motor (71) and a linkage module (72), wherein the motor (71) is fixedly mounted on the bottom of the housing (1), and the linkage module (72) is fixedly mounted on the side of the housing (1), connected to the output end of the motor (71), and used to rotate the melting device (4).

4. A plastic extruder for cable processing according to claim 1, characterized in that: The melting device (4) comprises a melting tube (41), a spiral blade (42), a plurality of heating rings (43) and a plurality of heating modules (44); the melting tube (41) is rotatably mounted inside the housing (1); the spiral blade (42) is fixedly mounted inside the melting tube (41) to drive the movement of the colloid; the plurality of heating rings (43) are equidistantly sleeved on the melting tube (41); and the plurality of heating modules (44) are respectively fixedly mounted on the bottom of the plurality of heating rings (43).

5. A plastic extruder for cable processing according to claim 4, characterized in that: The melt pipe (41) is respectively configured as a feeding section, a plasticizing section and a homogenizing section, and is distributed in sequence from one end close to the feed tank (3) to the other end; the outlet of the melt pipe (41) at one end close to the extrusion assembly (5) is configured in a truncated cone shape, and the outlet diameter becomes smaller.

6. A plastic extruder for cable processing according to claim 1, characterized in that: The bubble breaking component (6) comprises a mounting column (61), a plurality of blades (62) and a plurality of bubble breaking needles (63); the mounting column (61) is vertically fixedly connected to a side of the extrusion plate (53) close to the melting device (4); the plurality of blades (62) are annularly fixedly connected to the side of the mounting column (61); and the plurality of bubble breaking needles (63) are evenly fixedly connected to the plurality of blades (62) for bubble breaking processing.

7. A plastic extruder for cable processing according to claim 6, characterized in that: The end of the mounting column (61) is fixedly connected to a linkage stirring assembly (8), the linkage stirring assembly (8) comprising a connecting rod (81), a plurality of side rods (82) and a plurality of stirring rods (83), the connecting rod (81) being fixedly connected to the end of the mounting column (61), the plurality of side rods (82) being annularly fixedly connected between the top end of the connecting rod (81) and the inner wall of the melt tube (41), and the plurality of stirring rods (83) being annularly fixedly connected to the end of the connecting rod (81).

8. A plastic extruder for cable processing according to claim 1, characterized in that: A filtering component (9) is arranged inside the material guide shell (51), and the filtering component (9) is used to filter impurities in the colloid multiple times.

9. A plastic extruder for cable processing according to claim 8, characterized in that: The filter assembly (9) comprises a filter ring (91), a plurality of filter sheets (92) and a baffle (93); the filter ring (91) is fixedly connected to the edge of the extrusion plate (53); the plurality of filter sheets (92) are fixedly mounted between a plurality of mounting frames (52); the baffle (93) is fixedly connected to the bottom of a side of the material guide shell (51) close to the shaping module (2), and is located between the material guide shell (51) and the extrusion plate (53) to block impurities at the bottom; the filter ring (91), the filter sheets (92) and the baffle (93) are all provided with filter holes.

10. A plastic extruder for cable processing according to claim 1, characterized in that: A plurality of collecting strips (10) are fixedly connected in an annular shape to the edge of the extrusion plate (53), and a collecting space is provided inside the collecting strips (10) for collecting impurities.

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