A multi-stage extrusion process for producing a corrosion resistant cable jacketing material

Abstract

The present application relates to cable production technical field, and disclose a kind of multi-section extrusion process's corrosion-resistant cable sheath material production equipment, solve the existing multi-section extruder supporting straight-line type feeding hopper, easy to cause uneven feeding, material agglomeration easy to block, affect finished product quality, also can cause shutdown, increase operation and maintenance cost problem, it includes multi-section extruder main body, the discharge end of multi-section extruder main body is equipped with discharge head, the feed inlet position of multi-section extruder main body is fixedly installed feed pipe, feed pipe top is successively connected with feed hopper and feed pipe fixedly installed in discharge tank, feed hopper upper end front is provided with feeding port, feed hopper rear side is fixedly installed support frame, support frame lower end is installed servo motor;The present application changes traditional straight-line type self-weight feeding mode, effectively solve the uneven feeding of original equipment, material easy to aggregate, feeding passage blockage, frequent shutdown problem, guarantee material conveying continuous and stable, improve material mixing plasticizing effect and sheath material finished product quality.

Description

Technical Field

[0001] This invention belongs to the field of cable production technology, specifically a multi-stage extrusion process for producing corrosion-resistant cable sheath materials. Background Technology

[0002] This multi-stage extrusion process equipment for producing corrosion-resistant cable sheath materials is an integrated production line specifically designed for corrosion-resistant cable sheath materials. Its core components include a multi-stage extruder, a precision feeding system, a temperature control module, a cooling and shaping unit, a traction and winding system, and an online detection device. The equipment employs a segmented screw and barrel structure, with zoned temperature control based on the characteristics of different stages of plasticization, mixing, homogenization, and extrusion of the sheath material. It is compatible with various raw materials such as polyolefins, corrosion-resistant rubber, and special modified plastics. Each temperature zone is independently controlled, precisely controlling the material's melting state to ensure full integration of additives and the matrix, improving the material's acid and alkali resistance, aging resistance, and corrosion resistance. The entire machine is equipped with variable frequency traction and sizing dies, ensuring stable extrusion molding and uniform wall thickness. Combined with a combined air-cooling and water-cooling structure, it rapidly shapes the material, preventing deformation. The equipment boasts a high degree of automation, enabling continuous operation while balancing production efficiency and product quality. It is widely used in the mass production of corrosion-resistant cable sheaths for chemical, marine, and underground applications.

[0003] Existing multi-stage extruders are equipped with direct-feed hoppers, where materials fall directly under their own weight, resulting in unstable conveying and problems such as uneven feeding, interrupted supply, and flow fluctuations. At the same time, raw material agglomeration cannot be effectively broken up, and clumps of particles enter the machine directly, which not only affects the mixing and plasticizing effect of the material but also causes unstable extrusion pressure, ultimately reducing the molding quality and production continuity of cable sheath materials. Unstable feeding and material agglomeration can also easily lead to material blockage and shutdown, significantly increasing operation and maintenance costs. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a multi-stage extrusion process for producing corrosion-resistant cable sheath material, which effectively solves the problems in the prior art where the existing multi-stage extruder is equipped with a straight discharge hopper, which easily causes uneven feeding, material agglomeration and blockage, affecting the quality of finished products, and also causes downtime and increases maintenance costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage extrusion process for producing corrosion-resistant cable sheath material, comprising a multi-stage extruder body, an outlet head installed at the outlet end of the multi-stage extruder body, a feed pipe fixedly installed at the inlet of the multi-stage extruder body, a feeding tank and a feeding hopper connected in series at the top of the feed pipe, a feeding port provided at the front of the upper end of the feeding hopper, a support frame fixedly installed at the rear side of the feeding hopper, a servo motor installed at the lower end of the support frame, and support legs fixedly installed at the bottom of the multi-stage extruder body; the output end of the servo motor is connected to a linkage component, a grid and multiple sets of dispersing rods are assembled inside the feeding hopper, a distribution plate is rotatably installed inside the feeding tank, and the linkage component simultaneously drives the distribution plate, the grid, and the dispersing rods. During the operation of the servo motor, the distribution plate can be driven by the linkage component to achieve intermittent and uniform feeding, while driving the grid to reciprocate and vibrate, and driving the dispersing rods to rotate continuously, fully dispersing material clumps and avoiding material agglomeration and blockage problems from the source.

[0006] Preferably, the linkage assembly includes a lower sprocket and an upper sprocket. The lower sprocket is fixedly mounted on the output end of the servo motor, and the upper sprocket is rotatably mounted on the support frame via an upper rotating seat. A meshing chain is fitted between the lower sprocket and the upper sprocket, and stable power transmission is achieved by relying on chain drive. A large gear is fixedly connected to the front of the upper sprocket. A driving bevel gear is fixed to the front side of the large gear via a first shaft. The first shaft is rotatably mounted on the upper end face of the feed hopper via a first shaft seat. A driven bevel gear meshes with the lower part of the driving bevel gear. A second shaft is fixed to the bottom of the driven bevel gear. The bottom end of the second shaft extends into the interior of the feed hopper and is fixedly connected to the dispersing rod. The second shaft is rotatably engaged with the upper end of the feed hopper via a second shaft seat.

[0007] Preferably, a small gear meshes with the large gear below, and the small gear is rotatably mounted on the support frame via a lower rotating seat. A rotating rod is fixed to the front of the small gear, and a bushing is rotatably fitted around the outside of the rotating rod. The bottom of the bushing is fixedly connected to the outer wall of the feed hopper via a support arm. A transmission bar is fixed to the front end of the rotating rod, and a pin is hinged to the lower end of the transmission bar. A hollow strip is movably fitted around the pin, and a connecting frame is fixed to the top of the hollow strip via a support rod. Insert rods are fixed to both ends of the bottom of the connecting frame, and the bottom ends of the insert rods penetrate into the inside of the feed hopper and are fixed to the grid as a whole. Sliding sleeves are fixed to both the left and right ends of the hollow strip, and sliding rods slide through the sliding sleeves. The bottom ends of the sliding rods are fixed to the outer wall of the feed hopper via a fixed seat. The sliding sleeves and sliding rods cooperate with each other to limit and guide the movement trajectory of the hollow strip.

[0008] Preferably, a drive bar is fixed at the front of the lower sprocket, and a pin is provided at the lower end of the drive bar. A rotating shaft is fixed at the rear of the material distribution plate inside the feeding tank. The rotating shaft is rotatably mounted on the inner wall of the feeding tank through a damping bearing. An intermittent plate is fixed at the rear end of the rotating shaft. Four openings are equidistantly opened in a ring on the surface of the intermittent plate. The pin is movably inserted into the openings to drive the intermittent plate to perform intermittent rotational motion.

[0009] Preferably, the entire grid is made of high-strength, wear-resistant metal material, which can intercept large-volume clumps of material and further disperse the material with the shaking action.

[0010] Preferably, the dispersing rods are arranged in a ring array along the circumference of the second shaft, and each dispersing rod has raised stirring teeth on its surface to enhance the dispersing and combing effect of materials and prevent materials from sticking together and agglomerating.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] (1) This equipment abandons the traditional straight-discharge self-weight material feeding structure. It relies on the servo motor to drive the intermittent material distribution plate, the rotating dispersing rod and the reciprocating shaking grid to work together. It can accurately control the material conveying speed and conveying volume. It can not only realize the continuous, uniform and stable material conveying, but also fully disperse the agglomerated and clustered raw materials. It solves the problems of uneven material supply, flow fluctuation, material accumulation and frequent blockage of the feeding channel in traditional feeding devices from the root, and effectively ensures the long-term uninterrupted and stable operation of the entire production line.

[0013] (2) After the raw materials are combed, they are loose and uniform. After entering the multi-stage extruder, the mixing, melting and plasticizing reactions of the materials are more complete and thorough. Various functional additives are more integrated with the matrix resin, which further enhances the key properties of corrosion-resistant cable sheath material such as acid and alkali resistance, aging resistance, corrosion resistance and wear resistance, and greatly improves the overall quality and service life of the finished cable sheath.

[0014] (3) The entire material distribution, dispersing and anti-blocking mechanism adopts an integrated linkage transmission design. It can complete all actions with only a single servo motor. The overall structure is compact, the transmission is smooth and the failure rate is low. The equipment has a high degree of automation, which greatly reduces the frequency of manual on-site duty, material blockage cleaning and equipment failure repair, effectively saving labor costs. At the same time, it reduces the wear and tear of parts and daily maintenance expenses, and the overall operating cost is significantly controlled.

[0015] (4) The protective cover installed above the feed hopper can provide physical protection for the internal gears, sprockets and other moving transmission components, prevent material impurities from entering the transmission gap and causing jamming and damage, and also prevent operators from accidentally touching the moving structure and causing safety accidents, thus comprehensively improving the safety and reliability of equipment operation. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of the device of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the internal structure of the feeding hopper of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the support frame and protective cover of the present invention;

[0022] Figure 5 This is a schematic diagram of the linkage component structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the intermittent disk structure of the present invention;

[0024] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0025] Figure 8 For the present invention Figure 5 Enlarged structural diagram at point B;

[0026] In the diagram: 1. Multi-stage extruder body; 2. Support leg; 3. Discharge head; 4. Feed pipe; 5. Feed tank; 6. Feed hopper; 7. Support frame; 8. Protective cover; 9. Servo motor; 10. Grating; 11. Dispersing rod; 12. Distribution plate; 13. Lower sprocket; 14. Upper sprocket; 15. Chain; 16. Large gear; 17. First shaft; 18. First shaft seat; 19. Driving bevel gear; 20. Driven bevel gear; 21. Second shaft. ; 22. Second shaft seat; 23. Pinion; 24. Rotating rod; 25. Bushing; 26. Transmission bar; 27. Pin; 28. Hollow bar; 29. ​​Connecting frame; 30. Drive bar; 31. Pin shaft; 32. Intermittent disc; 33. Opening; 34. Fixed seat; 35. Rotating shaft; 36. Damping bearing; 37. Lower rotating seat; 38. Upper rotating seat; 39. Support arm; 40. Support rod; 41. Sliding sleeve; 42. Sliding rod; 43. Insert rod. Detailed Implementation

[0027] 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.

[0028] Example 1, by Figure 1 , Figure 2 , Figure 3and Figure 4 The present invention includes a multi-stage extruder body 1, with support legs 2 fixedly installed at the bottom of the multi-stage extruder body 1, which provide stable support for the entire machine. A discharge head 3 is fixedly installed at the discharge end of the multi-stage extruder body 1 to complete the final extrusion molding of the sheath material. A feed pipe 4 is fixedly connected to the feed inlet of the multi-stage extruder body 1. A feed tank 5 and a feed hopper 6 are sequentially connected and connected upwards at the top of the feed pipe 4. A feed inlet is opened at the front of the upper end of the feed hopper 6, from which raw materials are fed into the equipment. A support frame 7 is fixedly welded to the rear side of the feed hopper 6, and a servo motor 9 is fixedly installed at the lower rear end of the support frame 7. A protective cover 8 is also added to the outer top of the feed hopper 6 to protect the internal transmission structure, preventing dust and materials from entering and causing component jamming, while ensuring operational safety.

[0029] The output end of the servo motor 9 is equipped with a linkage component. The internal space of the feed hopper 6 is equipped with a grid 10 and multiple dispersing rods 11. The internal cavity of the discharge tank 5 is equipped with a rotating distribution plate 12. The linkage component establishes a transmission connection with the distribution plate 12, the grid 10, and the dispersing rods 11 respectively. When the equipment is running, the servo motor 9 is started, and the power is synchronously transmitted to each execution component through the linkage component. The distribution plate 12 rotates intermittently to achieve intermittent uniform feeding, eliminating the problem of unstable flow rate in traditional direct discharge feeding. The dispersing rods 11 rotate continuously to loosen and comb the sticky and agglomerated raw materials. The grid 10 works with the transmission to make up-and-down reciprocating vibrations, which can not only intercept large material clumps, but also prevent material accumulation and blockage of the channel. The combination of multiple structures comprehensively solves the defects of uneven feeding, material agglomeration, and material blockage, ensuring that the raw materials are stably transported to the interior of the multi-stage extruder body 1.

[0030] Example 2, based on Example 1, is... Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The linkage component consists of a lower sprocket 13 and an upper sprocket 14. The lower sprocket 13 is fixedly sleeved on the output shaft of the servo motor 9, while the upper sprocket 14 is rotatably mounted on the upper part of the support frame 7 via an upper rotating seat 38, allowing it to rotate freely on the support frame 7. A chain 15 is sleeved between the lower sprocket 13 and the upper sprocket 14, meshing with both sprockets. The servo motor 9 drives the lower sprocket 13 to rotate, and the chain 15 pulls the upper sprocket 14 to rotate synchronously, achieving stable transmission of longitudinal power. The entire chain drive structure provides smooth transmission, strong load-bearing capacity, and is suitable for continuous industrial production conditions.

[0031] The front end face of the upper sprocket 14 is fixedly connected to the large gear 16, which rotates synchronously with the upper sprocket 14. A first shaft 17 is fixed at the center of the front side of the large gear 16, and a driving bevel gear 19 is fixed to the front end of the first shaft 17. The first shaft 17 is rotatably mounted on the upper end face of the feed hopper 6 via a first shaft seat 18. The first shaft seat 18 provides positioning support for the first shaft 17, ensuring rotational accuracy. The driven bevel gear 20 is vertically meshed below the driving bevel gear 19, and the bottom of the driven bevel gear 20... The second shaft 21 is fixedly connected, extending vertically downward and penetrating into the inside of the feed hopper 6. The bottom end of the second shaft 21 is fixedly connected to all the dispersing rods 11. The outside of the second shaft 21 is rotatably engaged with the upper end face of the feed hopper 6 through the second shaft seat 22. During operation, the large gear 16 drives the active bevel gear 19 to rotate. After the bevel gear reverses the transmission, it drives the second shaft 21 and the dispersing rods 11 to rotate continuously, continuously loosening and combing the falling material and breaking up the mutually sticky material clumps.

[0032] The large gear 16 meshes with the small gear 23 at the lower part of its wheel body. The small gear 23 is rotatably mounted on the side wall of the support frame 7 via the lower rotating seat 37. The small gear 23 can rotate independently. A rotating rod 24 is fixed at the center of the front part of the small gear 23. A bushing 25 is rotatably sleeved on the outside of the rotating rod 24. A support arm 39 is fixed at the bottom of the bushing 25. The end of the support arm 39 is fixedly connected to the outer wall of the feed hopper 6. The bushing 25 and the support arm 39 cooperate to limit and support the rotating rod 24, ensuring its rotational stability.

[0033] A transmission bar 26 is fixed to the front end of the rotating rod 24. A pin 27 is hinged to the lower end of the transmission bar 26. A hollow bar 28 is movably sleeved on the outside of the pin 27, and the pin 27 can slide inside the hollow bar 28. A support rod 40 is fixed to the top of the hollow bar 28. A connecting frame 29 is fixed to the upper end of the support rod 40. Vertically arranged insert rods 43 are fixed to both ends of the bottom of the connecting frame 29. The bottom ends of the two insert rods 43 simultaneously penetrate into the inside of the feed hopper 6 and are fixedly connected to the top surface of the grid 10. Sliding sleeves 4 are fixed to the outer walls of both ends of the hollow bar 28. 1. Each sliding sleeve 41 has a sliding rod 42 inserted inside. The bottom end of the sliding rod 42 is fastened to the outer wall of the feed hopper 6 by the fixed seat 34. When the pinion 23 rotates, it drives the rotating rod 24 and the transmission bar 26 to make a circular motion. The hollow bar 28 is pushed and pulled by the pin 27. The hollow bar 28 makes a vertical reciprocating motion under the limiting guidance of the sliding sleeve 41 and the sliding rod 42. Then, through the connecting frame 29 and the insert rod 43, it drives the grid 10 to shake up and down, effectively preventing the material from blocking the grid mesh, and at the same time, it loosens and combs the stagnant material clumps.

[0034] A drive bar 30 is fixed to the front end of the lower sprocket 13, and a pin 31 is fixed to the lower end of the drive bar 30. A rotating shaft 35 is fixed to the center of the rear side of the distribution plate 12 inside the feeding tank 5. The rotating shaft 35 is rotatably mounted on the inner wall of the feeding tank 5 through a damping bearing 36. The damping bearing 36 can reduce rotation noise and ensure the stability of intermittent rotation. The rear end of the rotating shaft 35 extends to the outside of the feeding tank and fixes the intermittent plate 32. The intermittent plate 32 has four openings 33 equidistantly arranged in a ring on its surface. The pin 31 is movably inserted into one of the openings 33. During the rotation of the lower sprocket 13, it drives the drive bar 30 and the pin 31 to make a circular motion. The pin 31 is cyclically inserted into and disengaged from the opening 33, driving the intermittent plate 32, the rotating shaft 35 and the distribution plate 12 to make intermittent rotation, thereby realizing quantitative and intermittent uniform feeding and completely solving the problems of flow fluctuation and interruption of self-weight feeding.

[0035] Example 3, based on Examples 1 and 2, is... Figure 3 The grid 10 is made of high-strength wear-resistant metal material, which can intercept large clumps of material that are not completely loosened above the grid. The shaking action of the grid 10 further completes the loosening and sorting of the material, ensuring the uniformity of the material state. The dispersing rods 11 are arranged in a ring array along the circumference of the second shaft 21. The surface of each dispersing rod 11 is integrally formed with raised combing teeth. The combing teeth can increase the contact area with the material, improve the loosening and diversion effect, effectively prevent small materials from sticking together and agglomerating, and further optimize the feeding effect.

[0036] When the equipment is in formal production, the staff put the corrosion-resistant cable sheath material into the equipment through the feeding port at the top of the feeding hopper 6. The material enters the feeding hopper 6 and the feeding tank 5 in sequence. The servo motor 9 is started. The output of the servo motor 9 drives the lower sprocket 13 to rotate synchronously. On one hand, the lower sprocket 13 drives the upper sprocket 14 and the large gear 16 to rotate through the chain 15. The large gear 16 drives the active bevel gear 19 and the small gear 23 to work respectively. The active bevel gear 19 meshes with the driven bevel gear 20, which drives the second shaft 21 and the dispersing rod 11 to rotate continuously, loosening and sorting the material clumps that are stuck together in the feeding hopper 6. The small gear 23 drives the rotating rod 24 and the transmission bar 26 to make a circular motion. Through the pin 27, hollow bar 28, connecting frame 29 and plug rod 43, the grid 10 is driven to shake up and down continuously, intercepting large material clumps and preventing the mesh from being blocked.

[0037] On the other hand, the lower sprocket 13 drives the drive bar 30 and the pin 31 to rotate. The pin 31 cooperates with the opening 33 on the intermittent disc 32 to drive the intermittent disc 32, the rotating shaft 35 and the material distribution disc 12 to perform intermittent rotation. The material distribution disc 12 realizes intermittent quantitative feeding, allowing the material to enter the feed pipe 4 at a uniform speed, and finally be stably conveyed to the multi-stage extruder body 1 for plasticizing, mixing and extrusion operations. The entire mechanism is driven by a single servo motor, and the actions of each component cooperate with each other. It solves the problems of uneven feeding, material agglomeration and channel blockage in traditional equipment from multiple links such as feeding, loosening and screening, ensuring stable extrusion conditions, improving the quality of finished cable sheath materials, reducing the frequency of downtime for cleaning and reducing production and maintenance costs.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage extrusion process for producing corrosion-resistant cable sheathing material, comprising a multi-stage extruder body (1), characterized in that: The discharge end of the multi-segment extruder body (1) is equipped with a discharge head (3), and a feed pipe (4) is fixed at the feed inlet of the multi-segment extruder body (1). The top of the feed pipe (4) is connected in series with a feed tank (5), a feed hopper (6) and a protective cover (8). The front part of the upper surface of the feed hopper (6) is fixed with a feed port, and a support frame (7) is fixed on the rear side of the feed hopper (6). A servo motor (9) is fixed at the lower end of the rear side of the support frame (7). A support leg (2) is fixed at the lower part of the multi-segment extruder body (1). The output end of the servo motor (9) is equipped with a linkage component. The inside of the feed hopper (6) is equipped with a grid (10) and several dispersing rods (11). The inside of the discharge tank (5) is equipped with a material distribution plate (12). The linkage component is connected to the material distribution plate (12), the grid (10) and several dispersing rods (11) respectively. When the servo motor (9) is running, it drives the material distribution plate (12) to discharge material intermittently and evenly through the transmission component. The transmission component also drives the grid (10) to shake up and down and drive several dispersing rods (11), thereby completely dispersing the agglomerated material.

2. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 1, characterized in that: The linkage component includes a lower sprocket (13) fixedly installed at the output end of the servo motor (9), and an upper sprocket (14) is provided directly above the lower sprocket (13). The upper sprocket (14) is rotated and positioned with the support frame (7) through the upper rotating seat (38), and the upper sprocket (14) and the lower sprocket (13) mesh with the chain (15).

3. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 2, characterized in that: The front of the upper sprocket (14) is fixed with a large gear (16). The front side of the large gear (16) is fixed with a driving bevel gear (19) through a first shaft (17). The outside of the first shaft (17) is rotated and positioned with the upper end face of the feed hopper (6) through a first shaft seat (18). The lower part of the driving bevel gear (19) is meshed with a driven bevel gear (20). The bottom of the driven bevel gear (20) is fixed with a second shaft (21). The bottom end of the second shaft (21) extends downward into the interior of the feed hopper (6) and is fixed with several dispersing rods (11). The outside of the second shaft (21) is rotated and positioned with the upper end of the feed hopper (6) through a second shaft seat (22).

4. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 2, characterized in that: The lower part of the large gear (16) is meshed with a small gear (23). The rear side of the small gear (23) is rotated and positioned with the support frame (7) through the lower rotating seat (37). The front part of the small gear (23) is fixed with a transmission bar (26) through a rotating rod (24). A bushing (25) is rotatably installed on the outside of the rotating rod (24). The lower part of the bushing (25) is fixed with the feed hopper (6) through a support arm (39).

5. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 4, characterized in that: The lower end of the front side of the transmission bar (26) is hinged with a pin (27), and a hollow bar (28) is movably sleeved on the outside of the pin (27). The top of the hollow bar (28) is fixed with a connecting frame (29) by a support rod (40). The lower sides of both ends of the front of the connecting frame (29) are fixed with insert rods (43). The bottom ends of the two insert rods (43) penetrate downward into the interior of the feed hopper (6) and are fixed to the grid (10).

6. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 5, characterized in that: Both ends of the hollow strip (28) are fixed with sliding sleeves (41), and sliding rods (42) are movably inserted inside the sliding sleeves (41). The bottom ends of the sliding rods (42) are fixed to the outside of the feed hopper (6) through the fixed seat (34).

7. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 2, characterized in that: The front of the lower sprocket (13) is fixed with a drive bar (30), and the lower end of the front side of the drive bar (30) is fixed with a pin (31). The rear side of the distribution plate (12) is fixed with a rotating shaft (35). The outside of the rotating shaft (35) is rotated and positioned with the feeding tank (5) through a damping bearing (36). The rear end of the rotating shaft (35) is fixed with an intermittent plate (32). The intermittent plate (32) has four openings (33) equidistantly spaced in a ring, and the pin (31) is inserted into one of the openings (33).

8. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 1, characterized in that: The grid (10) is made of high-strength wear-resistant metal material and can intercept large-volume agglomerated materials.

9. The equipment for producing corrosion-resistant cable sheath material using a multi-stage extrusion process according to claim 1, characterized in that: Several of the aforementioned dispersing rods (11) are arranged in a ring array along the circumference of the second shaft, and each dispersing rod (11) has raised stirring teeth on its surface.

Images