Cold-resistant insulated cable material and production equipment and method thereof

Abstract

The application relates to a cold-resistant insulating cable material and a production device and method thereof, and relates to the technical field of cable manufacturing equipment. The application comprises a machine cylinder, which is internally provided with a conveying assembly, a heating assembly and a cleaning assembly. The conveying assembly comprises a conveying roller rotatably arranged in the inner cavity of the machine cylinder, and helical blades are arranged around the conveying roller. The heating assembly comprises a first heating section, a second heating section and a third heating section arranged in the machine cylinder and gradually increasing in temperature. The cleaning assembly comprises a sprayer arranged on the inner wall of the machine cylinder. The heating assembly is used for heating water in the sprayer, and the sprayer is used for spraying hot water in the machine cylinder, softening and flushing the raw materials adhered in the machine cylinder. The application has the effects of facilitating the cleaning of the cable material raw materials adhered on the screw rod of the extruding machine or the inner wall of the machine cylinder, improving the production efficiency and production quality of the product.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cable manufacturing equipment, in particular to cold-resistant insulation cable material and a production device and method thereof. BACKGROUND

[0002] At present, the conventional cable may become hard and crack at below minus ten degrees, while the cold-resistant insulation cable material can work normally in the environment of minus forty degrees and above, and has excellent electrical properties, large insulation resistance, good voltage resistance and good breakdown resistance, so that the leakage or breakdown does not occur at low temperature.

[0003] However, in the process of extruding and granulating the cable material, the premix is melted in the extruder, and plasticizers, stabilizers and other additives are uniformly distributed in the matrix. Since the cable material is usually composed of high molecular polymers such as polyvinyl chloride (PVC) and polyethylene (PE), the high molecular materials have certain viscosity in the molten state, which is easy to adhere to the conveying roller or the inner wall of the cylinder in the extruder, thereby affecting the production efficiency and production quality of the product. SUMMARY

[0004] The application aims to provide a cold-resistant insulation cable material and a production device and method thereof, which can facilitate cleaning of the cable material raw materials adhered to the screw or the inner wall of the cylinder of the extruder, and improve the production efficiency and production quality of the product.

[0005] In a first aspect, the application provides a production device for a cold-resistant insulation cable material, which adopts the following technical scheme:

[0006] A production device for a cold-resistant insulation cable material, comprising a cylinder, wherein the cylinder is internally provided with:

[0007] A conveying assembly, comprising a conveying roller rotatably arranged in the inner cavity of the cylinder, and a spiral blade arranged on the conveying roller;

[0008] A heating assembly, comprising a first heating section, a second heating section and a third heating section arranged in the cylinder and gradually increasing in temperature;

[0009] A cleaning assembly, comprising a sprayer arranged on the inner wall of the cylinder, the heating assembly is used for heating water in the sprayer, and the sprayer is used for spraying hot water in the cylinder to soften and flush the raw materials adhered in the cylinder.

[0010] Optionally, a groove is formed in the inner wall of the cylinder and communicates with the inner cavity of the cylinder, and a stirring assembly is arranged in the cylinder, and the stirring assembly comprises a stirring rod slidingly arranged in the groove.

[0011] Optionally, the cleaning assembly further comprises a plurality of water pipes arranged in the barrel, and a plurality of connecting holes are formed in the inner wall of the groove and communicate with the water pipes.

[0012] Optionally, the sprayer comprises a spray head slidingly arranged in the connecting hole and a flexible hose for supplying water to the spray head, and the other end of the flexible hose communicates with the water pipe.

[0013] Optionally, a sliding block is slidingly arranged in the connecting hole, the sprayer is mounted on the sliding block, and an elastic member is arranged between the sliding block and the inner wall of the connecting hole, and the end of the sliding block away from the elastic member abuts against the side wall of the stirring rod.

[0014] Optionally, a bearing plate is slidingly arranged in the groove, and the bearing plate is fixed with a driving motor for driving the stirring rod to rotate.

[0015] Optionally, an electric telescopic rod is arranged on the outer wall of the barrel, and the driving end of the electric telescopic rod is fixed with the bearing plate.

[0016] Optionally, the heating assembly comprises heating wires spirally arranged on the barrel, and the distance between adjacent heating wires gradually decreases in the first heating section, the second heating section and the third heating section.

[0017] In a second aspect, the application provides a production method of a cold-resistant insulation cable material, comprising the following steps:

[0018] S1, selecting and weighing suitable base materials and additives, and pretreating the base materials and additives;

[0019] S2, uniformly mixing the base materials and part of the additives by using a mixing machine to form a premix, and then feeding the premix into a plasticizing machine to form a rubber compound;

[0020] S3, feeding the rubber compound into an extruding machine, softening the raw material by the extruding machine first, then feeding another part of the additives into the extruding machine, and extruding a melt strip after the raw material and the additives are completely fused, and then cutting the melt strip into cylindrical particles.

[0021] In a third aspect, the application provides a cold-resistant insulation cable material, which comprises the following raw materials by weight: 100 parts of PVC resin powder, 80-120 parts of cold-resistant plasticizer, 3-5 parts of heat stabilizer, 5-10 parts of filler, 0.5-1 part of lubricant, 1-2 parts of antioxidant, 10-15 parts of modified toughening agent, and 10-15 parts of chlorinated polyethylene.

[0022] In summary, the application has at least one of the following beneficial technical effects:

[0023] 1. The raw material changes from solid to molten state when passing through the first heating section, the second heating section and the third heating section. The polymer material has certain viscosity in the molten state and is easy to adhere to the screw or the inner wall of the cylinder in the extruder. When the equipment stops running, the heating assembly stops running, the temperature in the cylinder decreases, the raw material gradually changes from liquid to solid or semi-solid state, the molecular binding force increases, and the viscosity rises, making cleaning more difficult.

[0024] When the cable material preparation is completed, the heating assembly is turned on. The water flowing in the water pipe is hot water after passing through the first heating section, the second heating section and the third heating section, and the heating assembly is continuously turned on to reduce the possibility of complete solidification of the molten raw material. The spray head is used to spray hot water on the conveying roller. The straight spray mode softens the raw material and washes it off the conveying roller. At the same time, the conveying roller rotates, and the spiral blade drives the hot water to flow in the inner cavity of the cylinder, thereby washing the inner wall of the cylinder and the spiral blade, and then softening and washing off the raw material adhered to the inner wall of the cylinder and the spiral blade. Waste water is discharged from the discharge port.

[0025] 2. The raw material enters the extruder from the feeding port and needs to be gradually heated to reach the molten state. The gradually increasing temperature can better control the melting process of the material. In the initial stage of heating, the temperature is low, which helps to maintain the solid form of the material and facilitate transportation; as the material moves forward, the temperature gradually rises, the material gradually melts, and finally realizes the full melting state.

[0026] Cold water is added to the initial end of the water pipe. In the first heating section, the cold water can absorb the heat of the first heating section, thereby reducing the temperature in the cylinder at the first heating section.

[0027] 3. The stirring rod is slidingly arranged in the groove. When the raw material is mixed, the stirring rod extends out of the groove and inserts into the inner cavity of the cylinder. When the material and the additive are stirred and conveyed in the spiral blade, the stirring rod can play a role in auxiliary stirring and dispersing the mixed raw material, which can reduce the problem of accumulation or poor flow of the raw material.

[0028] 4. Since the stirring rod extends into the inner cavity of the cylinder, the molten raw material may adhere the stirring rod and the inner wall of the cylinder, so that the stirring rod cannot be retracted into the groove. The sliding block is tightly abutted with the stirring rod, and the sliding block cannot slide into the groove, resulting in that the cleaning assembly cannot normally operate.

[0029] The driving motor drives the stirring rod to rotate, which can reduce the possibility of the stirring rod being adhered to the inner wall of the cylinder by the molten raw material, and can also enhance the mixing effect of the raw material and the additive, thereby reducing the problem of accumulation or poor flow of the raw material.

[0030] 5. When the cable material is in the production state, the stirring rod pushes the sliding block into the connecting hole, at this time the elastic piece is in the compressed state, and the spray head is blocked by the hole wall of the connecting hole; when the stirring rod is retracted into the groove, the elastic piece is elastically deformed to push the sliding block into the groove, and the spraying direction of the spray head is towards the conveying roller, so as to spray and clean the conveying roller, and to convey hot water in the inner cavity of the cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a whole structure schematic diagram of a production equipment of a cold-resistant insulated cable material according to an embodiment of the present application;

[0032] Figure 2 is a cross-sectional structure schematic diagram of a production equipment of a cold-resistant insulated cable material according to an embodiment of the present application;

[0033] Figure 3 is a cross-sectional structure schematic diagram of a water conveying pipe according to an embodiment of the present application;

[0034] Figure 4 is an enlarged structure schematic diagram of a conveying assembly according to an embodiment of the present application;

[0035] Figure 5 is a structure schematic diagram of a stirring assembly working in a cylinder according to an embodiment of the present application;

[0036] Figure 6 is a structure schematic diagram of a cleaning assembly working in a cylinder according to an embodiment of the present application.

[0037] The drawings are explained as follows: 1, cylinder; 11, feeding port; 12, discharging port; 13, groove; 14, connecting hole; 2, heating assembly; 21, first heating section; 22, second heating section; 23, third heating section; 24, heating wire; 3, conveying assembly; 31, conveying roller; 32, helical blade; 33, driving source; 4, cleaning assembly; 41, water conveying pipe; 42, annular pipe; 43, sprayer; 431, spray head; 432, flexible hose; 44, sliding block; 45, elastic piece; 46, water inlet; 5, feeding assembly; 51, feeding pipe; 52, cover plate; 53, feeding port; 54, bridge breaking piece group; 541, driving rod; 542, driving piece; 543, connecting rod; 544, bridge breaking plate; 55, conveying blade; 6, liquid supply device; 7, stirring assembly; 71, stirring rod; 72, driving motor; 73, bearing plate; 74, electric telescopic rod. DETAILED DESCRIPTION

[0038] The drawings are explained as follows: Figure 1 The drawings are explained as follows: Figure 6 The present application is further described in detail. Embodiment 1

[0039] The embodiment provides a production equipment of cold-resistant insulation cable material Figures 1 to 6 , comprising a cylinder 1, a heating assembly 2, a conveying assembly 3, a feeding assembly 5 and a cleaning assembly 4, the cylinder 1 is provided with a feeding port 11 and a discharging port 12, the feeding assembly 5 is installed on the cylinder 1 and used for conveying raw materials into the inner cavity of the cylinder 1, the cylinder 1 is provided with a first heating section 21, a second heating section 22 and a third heating section 23, the heating assembly 2 comprises heating wires 24 arranged around the cylinder 1, the distribution of the heating wires 24 gradually increases from the first heating section 21 to the second heating section 22 and the third heating section 23, and a gradually increasing density arrangement is formed, when the density of the heating wires 24 is greater, the heating power per unit length increases, and the generated temperature is higher, so that the temperatures of the first heating section 21, the second heating section 22 and the third heating section 23 gradually increase.

[0040] The conveying assembly 3 is arranged in the inner cavity of the cylinder 1 and can convey the raw materials from the feeding port 11 to the discharging port 12 through the first heating section 21, the second heating section 22 and the third heating section 23.

[0041] In the extrusion process, the raw materials need to be gradually heated to reach a molten state after entering the cylinder 1 from the feeding port 11. The gradually increasing temperature can better control the melting process of the materials. In the early stage of heating, the temperature is low, which helps to maintain the solid form of the materials and facilitates conveying; as the materials move forward, the temperature gradually increases, the materials gradually melt, and finally realize a fully molten state.

[0042] Refer to Figure 1 and Figure 2 , the feeding assembly 5 comprises a feeding pipe 51 installed at the feeding port 11, the feeding pipe 51 is trumpet-shaped, an opening of the feeding pipe 51 away from the cylinder 1 is provided with a cover plate 52 for closing the opening, and the cover plate 52 is provided with a feeding opening 53 for the raw materials to enter the feeding pipe 51.

[0043] Refer to Figure 2 , the feeding assembly 5 further comprises a bridge breaking piece group 54, the bridge breaking piece group 54 comprises a driving rod 541 rotationally arranged in the feeding pipe 51, the cover plate 52 is fixedly connected with a driving piece 542 for driving the driving rod 541 to rotate, the driving piece 542 is an electric motor, and a driving end of the driving piece 542 penetrates through the cover plate 52 and is fixed coaxially with the driving rod 541. A plurality of interval arranged connecting rods 543 are vertically connected on the driving rod 541 located in the opening-shaped feeding pipe 51, the bridge breaking plate 544 is fixedly connected between the connecting rods 543, the bridge breaking plate 544 is attached to the inner wall of the feeding pipe 51, and the conveying blade 55 is spirally arranged around the driving rod 541 located in the straight cylinder-shaped feeding pipe 51.

[0044] When the raw materials are put into the feeding pipe 51 from the feeding port 53, on the one hand, the feeding port 11 is trumpet-shaped, and the raw materials are easy to cause the raw materials to accumulate and cause the feeding port 11 to be blocked when the raw materials enter the narrow pipe from the wide opening. On the other hand, the raw materials may be melted due to the proximity of the first heating section 21, and the remaining raw materials are bonded together, so that the raw materials are blocked, or the raw materials are easy to adhere to the inner wall of the feeding pipe 51 when the raw materials are melted. The driving member 542 drives the driving rod 541 to rotate, so that the connecting rod 543 rotates in the feeding pipe 51, so that the accumulated raw materials and the raw materials of the agglomerated raw materials are scattered, so that the raw materials can be conveyed to the conveying hole through the spiral blade 32. At the same time, the broken bridge plate 544 can scrape the raw materials adhered to the inner wall of the feeding pipe 51 due to the melting, so as to reduce the adverse effects of the raw materials adhered to the wall of the feeding pipe 51 on the feeding efficiency. The conveying blade 55 can convey the raw materials on the one hand, and can also disturb the raw materials blocked due to the excessive accumulation of the raw materials, so as to realize the broken bridge effect.

[0045] With reference to Figure 2 , the conveying assembly 3 comprises a conveying roller 31 rotatably arranged in the inner cavity of the barrel 1. The end of the barrel 1 away from the discharge port 12 is provided with a driving source 33 for driving the conveying roller 31 to rotate. The driving source 33 is a motor. The conveying roller 31 is provided with a spiral blade 32.

[0046] With reference to Figure 2 , the barrel 1 is provided with a liquid supply device 6. The end of the liquid supply device 6 is in communication with the inner cavity of the barrel 1. The liquid supply device 6 is arranged at the junction of the second heating section 22 and the third heating section 23. When the raw materials are in a semi-solid state in the second stage, the liquid supply device 6 puts the additives into the inner cavity of the barrel 1 to mix with the raw materials.

[0047] With reference to Figure 2 and Figure 5 , a groove 13 is formed in the inner wall of the barrel 1 at the third heating section 23. The barrel 1 is provided with a stirring assembly 7. The stirring assembly 7 comprises a stirring rod 71 slidably arranged in the groove 13. During the production of the cable material, the stirring rod 71 partially extends out of the groove 13 and is inserted into the inner cavity of the barrel 1. When the materials and additives are stirred and conveyed in the spiral blade 32, the stirring rod 71 can play an auxiliary stirring role to mix the raw materials and additives more uniformly. At the same time, the stirring rod 71 can scatter the accumulated raw materials or the raw materials agglomerated into a group, improve the mixing effect of the additives and raw materials, and reduce the problem of accumulation or poor flow of the raw materials.

[0048] With reference to Figure 2 and Figure 5The outer wall of the barrel 1 is fixed with an electric telescopic rod 74, the output end of the electric telescopic rod 74 is fixedly connected with a bearing plate 73 arranged in the groove 13, and the bearing plate 73 is fixed with a driving motor 72 for driving the stirring rod 71 to rotate. On the one hand, the electric telescopic rod 74 can drive the stirring rod 71 to slide in the groove 13, thereby facilitating the mixing of the additives and the raw materials. The driving motor 72 can drive the stirring rod 71 to rotate, which can further enhance the dispersion effect of the accumulated raw materials and the mixing effect of the raw materials and the additives.

[0049] On the other hand, since the mixed raw materials are heated to a molten state in the third heating section 23, they will have viscosity and easily adhere to the inner wall of the barrel 1 and the stirring rod 71, so that the stirring rod 71 is relatively fixed with the inner wall of the barrel 1 and cannot be retracted into the groove 13. When the driving motor 72 drives the stirring rod 71 to rotate, the possibility of the stirring rod 71 being adhered to the inner wall of the barrel 1 is reduced. After the cable material is prepared, the stirring rod 71 is retracted into the groove 13, and the inner wall of the groove 13 can scrape the mixed raw materials adhered to the stirring rod 71 into the inner cavity of the barrel 1, reducing the possibility of material remaining on the stirring rod 71.

[0050] With reference to Figure 5 The peripheral wall of the bearing plate 73 and the peripheral wall of the stirring rod 71 at one end of the groove 13 are both provided with sealing rings, which seal the gap between the groove 13 and the bearing plate 73 and the stirring rod 71, so that the inner cavity of the barrel 1 is a closed space, and waste water is not easily discharged from the groove 13.

[0051] The helical blades 32 in the third heating section 23 are arranged intermittently, and the apertures between the helical blades 32 are provided for the stirring rod 71 to pass through, reducing the possibility of cross collision between the helical blades 32 and the stirring rod 71.

[0052] Since the cable material is usually composed of high molecular polymers such as polyvinyl chloride (PVC) and polyethylene (PE), these high molecular materials have certain viscosity in the molten state and are easily attached to the conveying roller 31 or the inner wall of the barrel 1 in the extruder. Subsequent cleaning of the inner wall of the barrel 1 and the conveying roller 31 requires the extruder to be opened and the conveying barrel to be disassembled, and the cleaning process is relatively complex.

[0053] The cleaning assembly 4 arranged in the barrel 1 can clean the inner cavity of the barrel 1 without disassembling the extruder, remove the raw materials adhered to the inner wall of the barrel 1 and the conveying roller 31, and reduce the influence on the preparation of the remaining cable material.

[0054] With reference to Figure 5 and Figure 6The cleaning assembly 4 comprises a plurality of water pipes 41 arranged in the barrel 1, one end of the plurality of water pipes 41 is communicated through an annular pipe 42, and a water inlet 46 communicated with the annular pipe 42 is arranged on the barrel 1. A connecting hole 14 is arranged on the inner side wall of the groove 13, a sliding block 44 is slidably arranged in the connecting hole 14, one end of the sliding block 44 away from the groove 13 is fixedly connected with an elastic element 45, the elastic element 45 is a spring, and the other end of the elastic element 45 is fixedly connected with the inner wall of the connecting hole 14. The sliding block 44 is provided with a guide inclined surface at one end close to the groove 13, and the other end of the stirring rod 71 extending out of the groove 13 is a conical head, and the guide inclined surface of the sliding block 44 is in abutment with the inclined wall of the conical head of the stirring rod 71.

[0055] Referring to FIG. 6, the cleaning assembly 4 further comprises a sprayer 43 arranged in the sliding block 44, the sprayer 43 comprises a spraying head 431 and a telescopic hose 432 for supplying water to the spraying head 431, the spraying head 431 is clamped in the sliding block 44, and the spraying head 431 is blocked by the inner wall of the connecting hole 14, and the other end of the telescopic hose 432 is communicated with the water pipe 41.

[0056] During the production of the cable material, cold water is poured towards the water inlet 46, when the cold water passes through the first heating section 21, the cold water will absorb the heat of the first heating section 21, thereby reducing the temperature of the inner cavity of the barrel 1, so that the raw materials remain in a granular state at the feeding port 11, thereby facilitating the transportation of the raw materials. When the water in the water pipe 41 moves to the second heating section 22, the water temperature gradually rises, thereby feeding heat to the inner cavity of the barrel 1, improving the melting efficiency of the raw materials, and facilitating faster mixing of the raw materials and the additives.

[0057] After the production of the cable material is completed, the inner wall of the barrel 1, the conveying roller 31 and the stirring rod 71 may all be adhered with molten raw materials, when the equipment stops running, since the heating assembly 2 stops running, the temperature in the barrel 1 decreases, the raw materials gradually change from liquid to solid or semi-solid state, the intermolecular bonding force increases, resulting in an increase in viscosity, and cleaning becomes more difficult.

[0058] In the embodiment, referring to Figure 6 After the production of the cable material is completed, the heating assembly 2 continues to run, maintaining the form of the mixed raw materials in the inner cavity of the barrel 1, the electric telescopic rod 74 drives the stirring rod 71 to gradually retract into the groove 13, when the conical head of the stirring rod 71 moves to the groove 13, the elastic element 45 pushes the driving block to move towards the groove 13, until the spraying head 431 moves to the groove 13, the spraying head 431 sprays towards the output roller, the sprayed hot water can soften part of the hardened raw materials, reduce the adhesion of the raw materials, at the same time, the conveying assembly 3 is started, driving the hot water to flush in the third heating section 23, flushing the raw materials adhered to the inner wall of the barrel 1 and the spiral blade 32 down, and discharging from the discharge port 12. Embodiment 2

[0059] The embodiment provides a production method of a cold-resistant insulation cable material, and comprises the following steps:

[0060] S1, selecting appropriate base materials and additives, weighing and blending, and pretreating the base materials and additives.

[0061] S2, uniformly mixing the base materials and part of the additives by using a mixing machine to form a premix, and then feeding the premix into a plasticizing machine to form a rubber compound.

[0062] S3, feeding the rubber compound into an extruding machine, softening the raw materials by the extruding machine, feeding another part of the additives into the extruding machine, and then extruding a melt strip after the raw materials and the additives are completely fused, and cutting the melt strip into cylindrical particles. Embodiment 3

[0063] The embodiment provides a cold-resistant insulation cable material, and the cold-resistant insulation cable material comprises the following components by weight:

[0064] PVC resin powder: 100 parts, and the average polymerization degree is 2500-3000;

[0065] Cold-resistant plasticizer: 80-90 parts, preferably a combination of trioctyl trimellitate, dioctyl adipate and triisononyl trimellitate;

[0066] Thermal stabilizer: 3-5 parts of calcium-zinc composite stabilizer;

[0067] Filler: 5-10 parts, including one or more combinations of calcium carbonate, silicon dioxide, carbon black, talc, kaolin or montmorillonite;

[0068] Lubricant: 0.5-1 part;

[0069] Antioxidant: 1-2 parts, such as tetra-(dibutyl hydroxyhydrocinnamic acid) pentaerythritol ester and dilauryl thiodipropionate;

[0070] Modified toughening agent: 10-15 parts, such as nitrile rubber or ethylene-acrylic acid-ethyl ester copolymer;

[0071] Chlorinated polyethylene: 10-15 parts, and the chlorine content is 30-40%.

[0072] The embodiments of the specific embodiment are the preferred embodiments of the application, and are not intended to limit the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A production equipment for cold-resistant insulating cable material, characterized in that, The assembly includes a barrel (1), which is provided with: a conveying assembly (3), which includes a conveying roller (31) rotatably disposed in the inner cavity of the barrel (1), and a spiral blade (32) disposed on the conveying roller (31); a heating assembly (2), which includes a first heating section (21), a second heating section (22) and a third heating section (23) disposed in the barrel (1) with gradually increasing temperature; and a cleaning assembly (4), which includes a sprayer (43) disposed on the inner wall of the barrel (1), wherein the heating assembly (2) is used to heat the water in the sprayer (43), and the sprayer (43) is used to spray hot water into the barrel (1) to soften and wash away the raw materials adhering to the barrel (1); The inner wall of the barrel (1) is provided with a groove (13) that communicates with the inner cavity of the barrel (1). A stirring assembly (7) is provided inside the barrel (1). The stirring assembly (7) includes a stirring rod (71) that is slidably disposed in the groove (13). The cleaning component (4) also includes several water pipes (41) disposed in the barrel (1), and a connection hole (14) is provided on the inner wall of the groove (13). The connection hole (14) is connected to the water pipes (41), and the sprayer (43) is disposed in the connection hole (14). The sprayer (43) includes a spray head (431) slidably disposed in a connection hole (14) and a telescopic hose (432) for supplying water to the spray head (431), the other end of which is connected to a water supply pipe (41). A sliding block (44) is slidably disposed in the connecting hole (14), and the sprayer (43) is mounted on the sliding block (44). An elastic element (45) is disposed between the sliding block (44) and the inner wall of the connecting hole (14). The end of the sliding block (44) away from the elastic element (45) abuts against the side wall of the stirring rod (71). A support plate (73) is slidably disposed in the groove (13), and a drive motor (72) for driving the stirring rod (71) to rotate is fixed on the support plate (73). An electric telescopic rod (74) is provided on the outer wall of the barrel (1), and the driving end of the electric telescopic rod (74) is fixed to the bearing plate (73).

2. The production equipment for cold-resistant insulating cable material according to claim 1, characterized in that, The heating assembly (2) includes heating wires (24) spirally wound around the barrel (1), and the spacing between adjacent heating wires (24) in the first heating section (21), the second heating section (22) and the third heating section (23) gradually decreases.

3. A method for producing cold-resistant insulating cable material, comprising using the cold-resistant insulating cable material production equipment as described in any one of claims 1-2, characterized in that, Includes the following steps: S1. Select suitable matrix materials and additives, weigh and batch them, and pretreat the matrix materials and additives; S2. Use a mixer to uniformly mix the matrix materials and some additives to form a premix, and then put it into an internal mixer to plasticize the premix to form a rubber compound; S3. Put the rubber compound into an extruder. The extruder first softens the raw materials, and then puts another part of the additives into the extruder until the raw materials and additives are completely blended. Then, first extrude the melt strip, and then cut the melt strip into cylindrical granules.

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