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

Abstract

The invention relates to a cold-resistant insulated cable material and production equipment and method thereof, and relates to the technical field of cable manufacturing equipment.The cold-resistant insulated cable material comprises a machine barrel, a conveying assembly, a heating assembly and a cleaning assembly are arranged in the machine barrel, the conveying assembly comprises a conveying roller rotationally arranged in an inner cavity of the machine barrel, and spiral blades are arranged on the conveying roller in a surrounding mode; the heating assembly comprises a first heating section, a second heating section and a third heating section which are arranged in the machine barrel and are gradually increased in temperature; the cleaning assembly comprises a sprayer arranged on the inner wall of the machine barrel, the heating assembly is used for heating water in the sprayer, and the sprayer is used for spraying hot water into the machine barrel and softening and washing raw materials adhered to the interior of the machine barrel. The plastic extruding machine has the advantages that cable raw materials attached to a screw or the inner wall of a machine barrel of the plastic extruding machine can be conveniently cleaned, and the production efficiency and the production quality of products are improved.

Description

Technical Field

[0001] This application relates to the technical field of cable manufacturing equipment, and particularly relates to a cold-resistant insulating cable material, its production equipment, and method. Background Art

[0002] At present, when conventional cables are below minus ten degrees Celsius, the wire may become hard and crack. While cold-resistant insulating cable materials can work normally for a long time in an environment of minus forty degrees Celsius and above, and have excellent electrical properties, large insulation resistance, good voltage resistance, and good breakdown resistance, ensuring no leakage or breakdown at low temperatures.

[0003] However, during the extrusion granulation process of cable materials, the premix needs to be melted in an extruder, and additives such as plasticizers and stabilizers are added and evenly distributed in the matrix. Since cable materials are usually mainly composed of high molecular polymers such as polyvinyl chloride (PVC) and polyethylene (PE), these high molecular materials have a certain viscosity in the molten state and are likely to adhere to the conveying rollers or the inner wall of the barrel in the extruder, thus affecting the production efficiency and quality of products. Summary of the Invention

[0004] The purpose of this application is to provide a cold-resistant insulating cable material, its production equipment, and method, which can facilitate the cleaning of the cable material raw materials adhering to the screw or the inner wall of the barrel of the extruder, and improve the production efficiency and quality of products.

[0005] In the first aspect, a production equipment for a cold-resistant insulating cable material provided by this application adopts the following technical solutions: A production equipment for a cold-resistant insulating cable material includes a barrel, and the following are arranged inside the barrel: A conveying component, which includes a conveying roller rotatably arranged in the inner cavity of the barrel, and a spiral blade is arranged on the conveying roller; A heating component, which includes a first heating section, a second heating section, and a third heating section arranged in the barrel with gradually increasing temperatures; A cleaning component, which includes a sprayer arranged on the inner wall of the barrel. The heating component is used to heat the water in the sprayer, and the sprayer is used to spray hot water into the barrel to soften and wash away the raw materials adhering to the inner part of the barrel.

[0006] Optionally, grooves communicating with the inner cavity of the barrel are opened on the inner wall of the barrel, and a stirring component is arranged in the barrel. The stirring component includes a stirring rod slidably arranged in the grooves.

[0007] Optionally, the cleaning component further includes a plurality of water pipes arranged in the barrel. Connecting holes are opened on the inner wall of the grooves, and the connecting holes are communicated with the water pipes. The sprayer is slidably arranged in the connecting holes.

[0008] Optionally, the sprayer includes a spray head slidably disposed in the connection hole and a telescopic hose for supplying water to the spray head, and the other end of the telescopic hose communicates with the water delivery pipe.

[0009] Optionally, a sliding block is slidably disposed in the connection hole, the sprayer is mounted on the sliding block, an elastic member is disposed between the sliding block and the inner wall of the connection hole, and one end of the sliding block away from the elastic member abuts against the side wall of the stirring rod.

[0010] Optionally, a bearing plate is slidably disposed in the groove, and a driving motor for driving the stirring rod to rotate self - is fixed on the bearing plate.

[0011] Optionally, an electric telescopic rod is disposed on the outer wall of the barrel, and the driving end of the electric telescopic rod is fixed to the bearing plate.

[0012] Optionally, the heating assembly includes heating wires spirally wound around the barrel, and the distance between adjacent heating wires in the first heating section, the second heating section, and the third heating section gradually decreases.

[0013] In a second aspect, the present application provides a production method of a cold - resistant insulating cable material, including the following steps: S1. Select appropriate matrix materials and additives, weigh and proportion them, and perform pretreatment on the matrix materials and additives; S2. Use a mixer to uniformly mix the matrix materials and some of the additives to form a premix, and then put the premix into a 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. After the raw materials and additives are completely fused, first extrude a melt strip, and then cut the melt strip into cylindrical particles.

[0014] In a third aspect, the present application provides a cold - resistant insulating cable material, and the cold - resistant insulating cable material includes the following raw materials in parts by weight: PVC resin powder: 100 parts, cold - resistant plasticizer: 80 - 120 parts, heat stabilizer: 3 - 5 parts, filler: 5 - 10 parts, lubricant: 0.5 - 1 part, antioxidant: 1 - 2 parts, modified toughening agent: 10 - 15 parts, chlorinated polyethylene: 10 - 15 parts.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the raw materials pass through the first heating section, the second heating section, and the third heating section, the raw materials will change from a solid state to a molten state. And the polymer material has a certain viscosity in the molten state and is likely to adhere to the screw or the inner wall of the barrel in the extruder. After the equipment stops running, the heating component stops running, the temperature in the barrel drops, the raw materials gradually change from a liquid state to a solid state or a semi-solid state, and the binding force between molecules increases, resulting in an increase in viscosity, making cleaning more difficult.

[0016] After the cable material is prepared, the heating component is turned on. After the water delivery pipe passes through the first heating section, the second heating section, and the third heating section, the water flowing in the water delivery pipe is hot water, and the heating component is continuously turned on to reduce the possibility of the molten raw materials completely solidifying. Then, a spray head is used to spray hot water on the conveying roller, and the raw materials are softened and washed off the conveying roller by means of direct spraying. At the same time, the conveying roller rotates, and the spiral blade drives the hot water to flow in the inner cavity of the barrel, thereby flushing the inner wall of the barrel and the spiral blade, and then softening and flushing off the raw materials adhering to the inner wall of the barrel and the spiral blade. The waste water is discharged from the discharge port.

[0017] 2. After the raw materials enter the extruder from the feed port, they need to be gradually heated to reach the molten state. The gradually increasing temperature can better control the melting process of the materials. In the initial stage of heating, the temperature is relatively low, which helps to maintain the solid form of the materials and is convenient for conveying. As the materials move forward, the temperature gradually rises, and the materials gradually melt, eventually achieving a fully molten state.

[0018] Cold water is added at the initial end of the water delivery pipe. In the first heating section, the cold water can absorb the heat of the first heating section, thereby reducing the temperature in the barrel at the first heating section. 3. The stirring rod is slidably arranged in the groove. When mixing the raw materials, the stirring rod extends out of the groove and inserts into the inner cavity of the barrel. When the materials and additives are stirred and conveyed in the spiral blade, the stirring rod can play a role in assisting stirring and dispersing the mixed raw materials, and can reduce the problems of raw material accumulation or poor flow.

[0019] 4. Since the stirring rod extends into the inner cavity of the barrel, the molten raw materials may bond the stirring rod and the inner wall of the barrel, making the stirring rod unable to retract into the groove, the sliding block abuts against the stirring rod, and the sliding block cannot slide into the groove, resulting in the abnormal operation of the cleaning component.

[0020] The driving motor drives the stirring rod to rotate. On the one hand, it can reduce the possibility of the stirring rod being adhered to the inner wall of the barrel by the molten raw materials; on the other hand, it can strengthen the mixing effect of the raw materials and additives and reduce the situation of raw material accumulation or poor flow.

[0021] 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 member is in a compressed state, and the spray head is blocked by the hole wall of the connecting hole. When the stirring rod retracts into the groove, the elastic member undergoes elastic deformation and pushes the sliding block partially into the groove. The spraying direction of the spray head faces the conveying roller, thereby spraying and cleaning the conveying roller and conveying hot water into the inner cavity of the barrel. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of a production device for a cold-resistant insulating cable material according to an embodiment of the present application; Figure 2 is a schematic cross-sectional structure diagram of a production device for a cold-resistant insulating cable material according to an embodiment of the present application; Figure 3 is a schematic cross-sectional structure diagram showing the water delivery pipe according to an embodiment of the present application; Figure 4 is an enlarged schematic structure diagram showing the conveying assembly according to an embodiment of the present application; Figure 5 is a schematic structure diagram showing the stirring assembly working in the barrel according to an embodiment of the present application; Figure 6 is a schematic structure diagram showing the cleaning assembly working in the barrel according to an embodiment of the present application.

[0023] Description of the Reference Numerals: 1, barrel; 11, feed inlet; 12, discharge outlet; 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, spiral blade; 33, drive source; 4, cleaning assembly; 41, water delivery pipe; 42, annular pipe; 43, sprayer; 431, spray head; 432, telescopic hose; 44, sliding block; 45, elastic member; 46, water inlet; 5, feeding assembly; 51, feeding pipe; 52, cover plate; 53, feeding port; 54, bridge-breaking member group; 541, drive rod; 542, drive member; 543, connecting rod; 544, bridge-breaking plate; 55, conveying blade; 6, liquid supply device; 7, stirring assembly; 71, stirring rod; 72, drive motor; 73, bearing plate; 74, electric telescopic rod. Detailed Description of the Embodiment

[0024] The following is a further detailed description of the present application in conjunction with the attached Figure 1 - attached Figure 6 , drawings. Embodiment 1

[0025] This embodiment provides a production device for a cold-resistant insulating cable material. Refer to Figures 1 to 6, including a barrel 1, a heating assembly 2, a conveying assembly 3, a feeding assembly 5 and a cleaning assembly 4. The barrel 1 is provided with a feeding port 11 and a discharging port 12. The feeding assembly 5 is installed on the barrel 1 for conveying raw materials into the inner cavity of the barrel 1. Inside the barrel 1, there are a first heating section 21, a second heating section 22 and a third heating section 23. The heating assembly 2 includes heating wires 24 wound around the inside of the barrel 1. The distribution of the heating wires 24 starts from the first heating section 21 and gradually increases towards the second heating section 22 and the third heating section 23, forming an arrangement with a gradually increasing density. When the density of the heating wires 24 is greater, the heating power per unit length increases, and the generated temperature is higher. Therefore, the temperatures of the first heating section 21, the second heating section 22 and the third heating section 23 gradually increase.

[0026] The conveying assembly 3 is arranged in the inner cavity of the barrel 1 and can convey raw materials from the feeding port 11 through the first heating section 21, the second heating section 22 and the third heating section 23 to the discharging port 12.

[0027] During the extrusion process, after the raw materials enter the barrel 1 from the feeding port 11, they need 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 relatively low, which helps to maintain the solid form of the material and is convenient for conveying. As the material moves forward, the temperature gradually rises, and the material gradually melts, finally achieving a fully molten state.

[0028] Refer to Figure 1 and Figure 2 , the feeding assembly 5 includes a feeding pipe 51 installed at the feeding port 11. The feeding pipe 51 is in a trumpet shape. An opening at one end of the feeding pipe 51 away from the barrel 1 is provided with a cover plate 52 for closing the opening. The cover plate 52 is provided with a feeding port 53 for raw materials to enter the feeding pipe 51.

[0029] Refer to Figure 2 , the feeding assembly 5 further includes a bridge-breaking component group 54. The bridge-breaking component group 54 includes a driving rod 541 rotatably arranged in the feeding pipe 51. A driving component 542 for driving the driving rod 541 to rotate is fixedly connected to the cover plate 52. The driving component 542 is a motor, and the driving end of the driving component 542 passes through the cover plate 52 and is coaxially fixed to the driving rod 541. A plurality of connecting rods 543 are vertically connected to the driving rod 541 in the opening-shaped feeding pipe 51 at intervals. A bridge-breaking plate 544 is fixedly connected between the connecting rods 543. The bridge-breaking plate 544 fits the inner wall of the feeding pipe 51. A conveying blade 55 is spirally wound around the driving rod 541 in the straight-tube-shaped feeding pipe 51.

[0030] After the raw materials are fed into the feed pipe 51 from the feeding port 53, on the one hand, since the feeding port 11 is in a horn shape, when the raw materials enter the narrow pipe orifice from the broad opening, it is easy to cause the raw materials to accumulate and block the feeding port 11. On the other hand, the raw materials may be close to the first heating section 21, causing some of the raw materials to melt and bond the remaining raw materials together, resulting in caking, blocking the feed pipe 51, or the raw materials being easily adhered to the inner wall of the feed pipe 51 when melting. The driving member 542 drives the driving rod 541 to rotate, causing the connecting rod 543 to rotate in the feed pipe 51, so as to disperse the accumulated raw materials and the caked raw materials, enabling the raw materials to be conveyed to the conveying holes through the spiral blades 32. At the same time, the bridge-breaking plate 544 can scrape off the raw materials adhered to the inner wall of the feed pipe 51 due to melting, reducing the adverse effect of the raw materials adhered to the wall of the feed pipe 51 on the feeding efficiency. And the conveying blade 55 can facilitate the conveyance of the raw materials on the one hand and disturb the raw materials blocked due to excessive aggregation on the other hand, thus achieving the bridge-breaking effect.

[0031] Refer to Figure 2 , the conveying assembly 3 includes a conveying roller 31 rotatably arranged in the inner cavity of the barrel 1. A driving source 33 for driving the conveying roller 31 to rotate is arranged at one end of the barrel 1 away from the discharge port 12. The driving source 33 is a motor, and a spiral blade 32 is arranged on the conveying roller 31.

[0032] Refer to Figure 2 , a liquid feeder 6 is arranged on the barrel 1. The end of the liquid feeder 6 is communicated with the inner cavity of the barrel 1. The liquid feeder 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 feeder 6 inputs the additives into the inner cavity of the barrel 1 to be mixed with the raw materials.

[0033] Refer to Figure 2 and Figure 5 , a groove 13 is formed on the inner wall of the barrel 1 located in the third heating section 23. A stirring assembly 7 is arranged in the barrel 1. The stirring assembly 7 includes a stirring rod 71 slidably arranged in the groove 13. During the production of the cable material, a part of the stirring rod 71 extends out of the groove 13 and inserts 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, mixing the raw materials and additives more evenly. At the same time, the stirring rod 71 can disperse the accumulated raw materials or the raw materials agglomerated into groups, improving the mixing effect of the additives and the raw materials, and reducing the problems of raw material accumulation or poor flow.

[0034] Refer to Figure 2 and Figure 5, an electric telescopic rod 74 is fixed on the outer wall of the barrel 1. The output end of the electric telescopic rod 74 is fixedly connected to a bearing plate 73 arranged in the groove 13, and a driving motor 72 for driving the stirring rod 71 to rotate is fixed on the bearing plate 73. On the one hand, the electric telescopic rod 74 can drive the stirring rod 71 to slide in the groove 13, thus facilitating the auxiliary mixing of the additives and raw materials. And 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 additives.

[0035] On the other hand, since the mixed raw materials will have viscosity after being heated to the molten state in the third heating section 23, it is easy to adhere to the inner wall of the barrel 1 and the stirring rod 71, making the stirring rod 71 relatively fixed to the inner wall of the barrel 1 and the stirring rod 71 unable to retract into the groove 13. When the driving motor 72 drives the stirring rod 71 to rotate, it can reduce the possibility of the stirring rod 71 being adhered to the inner wall of the barrel 1. After the cable material is prepared, the stirring rod 71 retracts 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 materials remaining on the stirring rod 71.

[0036] Refer to Figure 5 , sealing rings are provided on the peripheral wall of the bearing plate 73 and the peripheral wall of the stirring rod 71 at one end of the groove 13. The sealing rings seal the gaps between the groove 13, the bearing plate 73 and the stirring rod 71, ensuring that the inner cavity of the barrel 1 is a closed space and preventing wastewater from flowing out of the groove 13.

[0037] The spiral blades 32 in the third heating section 23 are arranged intermittently, and the pores between the spiral blades 32 are for the stirring rod 71 to pass through, reducing the possibility of cross - collision between the spiral blades 32 and the stirring rod 71.

[0038] Since cable materials usually mainly consist of high - molecular polymers such as polyvinyl chloride (PVC), polyethylene (PE), etc., these high - molecular materials have a certain viscosity in the molten state and are easy to adhere to the conveying roller 31 in the extruder or the inner wall of the barrel 1. And subsequent cleaning of the inner wall of the barrel 1 and the conveying roller 31 requires opening the extruder and disassembling the conveying cylinder, and the cleaning process is relatively complex.

[0039] The cleaning component 4 arranged in the barrel 1 can clean the inner cavity of the barrel 1 without disassembling the extruder, removing the raw materials adhered to the inner wall of the barrel 1 and the conveying roller 31, and reducing the impact on the preparation of the remaining cable materials.

[0040] Refer to Figure 5 and Figure 6, the cleaning assembly 4 includes a plurality of water pipes 41 arranged in the barrel 1. One ends of the plurality of water pipes 41 are connected through an annular pipe 42, and a water inlet 46 communicating with the annular pipe 42 is formed on the barrel 1. A connection hole 14 is formed on the inner side wall of the groove 13. A sliding block 44 is slidably arranged in the connection hole 14. One end of the sliding block 44 away from the groove 13 is fixedly connected with an elastic member 45. The elastic member 45 is a spring, and the other end of the elastic member 45 is fixedly connected with the inner wall of the connection hole 14. A guiding inclined surface is arranged at one end of the sliding block 44 close to the groove 13. One end of the stirring rod 71 extending out of the groove 13 is a conical head, and the guiding inclined surface of the sliding block 44 is attached to the inclined wall of the conical head of the stirring rod 71.

[0041] Referring to Fig. 6, the cleaning assembly 4 further includes a sprayer 43 arranged in the sliding block 44. The sprayer 43 includes a spray head 431 and a telescopic hose 432 for supplying water to the spray head 431. The spray head 431 is clamped in the sliding block 44, and the spray head 431 is blocked by the inner wall of the connection hole 14. The other end of the telescopic hose 432 is communicated with the water pipe 41.

[0042] During the production of the cable material, cold water is poured into 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 in the first heating section 21, keeping the raw materials in a granular state at the feed inlet 11, and thus 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, so as to feedback heat to the inner cavity of the barrel 1, improve the melting efficiency of the raw materials, and facilitate the faster mixing of the raw materials and additives.

[0043] After the production of the cable material is completed, molten raw materials may adhere to the inner wall of the barrel 1, the conveying roller 31 and the stirring rod 71. After the equipment stops running, since the heating assembly 2 stops running, the temperature in the barrel 1 drops, the raw materials gradually change from liquid state to solid state or semi-solid state, the intermolecular binding force increases, resulting in an increase in viscosity, and the cleaning becomes more difficult.

[0044] In this embodiment, referring to Figure 6 , after the production of the cable material is completed, the heating assembly 2 continues to operate to maintain 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 member 45 pushes the driving block to move towards the groove 13 until the spray head 431 moves to the groove 13. The spray head 431 sprays and flushes towards the output roller. The sprayed hot water can soften some of the hardened raw materials, reduce the adhesion of the raw materials. At the same time, the conveying assembly 3 is started to drive the hot water to flush in the third heating section 23, wash down the raw materials attached to the inner wall of the barrel 1 and the spiral blade 32, and discharge them from the discharge port 12. Embodiment 2

[0045] This embodiment provides a production method of a cold-resistant insulating cable material, including the following steps: S1. Select appropriate matrix materials and additives, weigh and proportion them, and pre-treat the matrix materials and additives.

[0046] S2. Use a mixer to uniformly mix the matrix materials and some additives to form a premix, and then put the premix into a mixer to plasticize it into a rubber compound.

[0047] 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. After the raw materials and additives are completely fused, first extrude a melt strip, and then cut the melt strip into cylindrical particles. Example 3

[0048] This embodiment provides a cold-resistant insulating cable material. The cold-resistant insulating cable material by weight is as follows: PVC resin powder: 100 parts, with an average degree of polymerization of 2500 - 3000; Cold-resistant plasticizer: 80 - 90 parts, preferably a composition of trioctyl trimellitate, dioctyl adipate, and triisononyl trimellitate; Heat stabilizer: 3 - 5 parts of calcium-zinc composite stabilizer; Filler: 5 - 10 parts, including one or more combinations of calcium carbonate, silica, carbon black, talc powder, kaolin, or montmorillonite; Lubricant: 0.5 - 1 part; Antioxidant: 1 - 2 parts, such as pentaerythritol tetra-(dibutylhydroxyhydrocinnamate) and dilauryl thiodipropionate; Modified toughening agent: 10 - 15 parts, such as nitrile rubber or ethylene-acrylic acid-ethyl ester copolymer; Chlorinated polyethylene: 10 - 15 parts, with a chlorine content of 30 - 40%.

[0049] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A production device for cold-resistant insulating cable material, characterized in that, It includes a barrel (1), and arranged inside the barrel (1) are: a conveying assembly (3), the conveying assembly (3) includes a conveying roller (31) rotatably arranged in the inner cavity of the barrel (1), and a spiral blade (32) is arranged on the conveying roller (31); a heating assembly (2), the heating assembly (2) includes a first heating section (21), a second heating section (22) and a third heating section (23) arranged inside the barrel (1) with gradually increasing temperatures; a cleaning assembly (4), the cleaning assembly (4) includes a sprayer (43) arranged on the inner wall of the barrel (1), 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 adhered to the inner wall of the barrel (1).

2. The production equipment of a cold-resistant insulating cable material according to claim 1, characterized in that, A groove (13) communicating with the inner cavity of the barrel (1) is formed on the inner wall of the barrel (1), and a stirring assembly (7) is arranged inside the barrel (1), the stirring assembly (7) includes a stirring rod (71) slidably arranged in the groove (13).

3. The production equipment of a cold-resistant insulating cable material according to claim 2, characterized in that, The cleaning assembly (4) further includes a plurality of water pipes (41) arranged inside the barrel (1), a connection hole (14) is formed on the inner wall of the groove (13), the connection hole (14) communicates with the water pipe (41), and the sprayer (43) is arranged in the connection hole (14).

4. The production equipment of a cold-resistant insulating cable material according to claim 3, characterized in that, The sprayer (43) includes a spray head (431) slidably arranged in the connection hole (14) and a telescopic hose (432) for supplying water to the spray head (431), and the other end of the telescopic hose (432) communicates with the water pipe (41).

5. The production equipment of a cold-resistant insulating cable material according to claim 4, characterized in that, A sliding block (44) is slidably arranged in the connection hole (14), the sprayer (43) is installed on the sliding block (44), an elastic member (45) is arranged between the sliding block (44) and the inner wall of the connection hole (14), and one end of the sliding block (44) away from the elastic member (45) abuts against the side wall of the stirring rod (71).

6. The production equipment of a cold-resistant insulating cable material according to claim 2, characterized in that A bearing plate (73) is slidably arranged in the groove (13), and a driving motor (72) for driving the stirring rod (71) to rotate is fixed on the bearing plate (73).

7. The production equipment of a cold-resistant insulating cable material according to claim 6, characterized in that, An electric telescopic rod (74) is arranged 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).

8. The production equipment of a cold-resistant insulating cable material according to claim 7, characterized in that, The heating assembly (2) includes a heating wire (24) spirally wound around the barrel (1), and the distance between adjacent heating wires (24) in the first heating section (21), the second heating section (22) and the third heating section (23) gradually decreases.

9. A production method of a cold-resistant insulating cable material, which is made by using the production equipment of the cold-resistant insulating cable material described in claims 1-8, characterized in that, It includes the following steps: S1. Select appropriate matrix materials and additives, weigh and mix them, and pre-treat 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 the premix into a 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 the other part of the additives into the extruder. After the raw materials and additives are completely fused, first extrude a melt strip, and then cut the melt strip into cylindrical particles.

10. A cold-resistant insulating cable material, prepared by using the production method of a cold-resistant insulating material as described in claim 9, characterized in that, The cold-resistant insulating cable material comprises the following raw materials in parts by weight: PVC resin powder: 100 parts, cold-resistant plasticizer: 80-120 parts, heat stabilizer: 3-5 parts, filler: 5-10 parts, lubricant: 0.5-1 part, antioxidant: 1-2 parts, modified toughening agent: 10-15 parts, chlorinated polyethylene: 10-15 parts.

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