Preparation process of halogen-free flame-retardant cable material

Abstract

The invention relates to a preparation process of a halogen-free flame-retardant cable material applied to the field of cable material preparation, the preparation process relates to a mixer, internal mixing equipment, extrusion equipment, pelletizing equipment and an intelligent temperature control extrusion system arranged in the extrusion equipment, and the preparation process specifically comprises the following steps: S1, raw material preparation; through cooperation of the intelligent temperature control extrusion system and the extrusion temperature sensing assembly, extrusion parameters can be automatically and adaptively adjusted according to actual extrusion temperature changes in the extrusion preparation process of the halogen-free flame-retardant cable material, the preparation efficiency of the halogen-free flame-retardant cable material can be guaranteed, the preparation benefits of the halogen-free flame-retardant cable material can be promoted, and meanwhile the production cost is reduced. The intelligent degree in the preparation process of the halogen-free flame-retardant cable material can also be effectively improved, through the synergistic effect of the extrusion temperature and the extrusion speed, the phenomenon that the material decomposition temperature occurs when the halogen-free flame-retardant cable material is extruded is avoided, the preparation quality of the halogen-free flame-retardant cable material is improved, the reject ratio is reduced, and the production cost is reduced. The economic benefit of preparing the halogen-free flame-retardant cable material is effectively promoted.

Description

Technical Field

[0001] The present invention relates to a preparation process of cable materials, in particular to a preparation process of a halogen-free flame-retardant cable material applied to the field of cable material preparation. Background Art

[0002] In the modern wire and cable industry, halogen-free flame-retardant cable materials are widely used due to their excellent environmental protection characteristics and safety performance. They can not only effectively reduce the generation of toxic and corrosive gases during combustion but also reduce the harm to equipment and personnel in emergencies such as fires.

[0003] Halogen-free flame-retardant cable materials are generally made by mixing raw materials such as polyolefin blend resins, flame-retardant fillers, coupling agents, and antioxidants. Their preparation process mainly includes steps such as mixing, internal mixing and extrusion, cooling and pelletizing, and performance testing. During the preparation process, the parameters of each step need to be strictly controlled to ensure that the product performance and quality of the prepared halogen-free flame-retardant cable materials meet the requirements.

[0004] However, during the preparation of halogen-free flame-retardant cable materials, due to the high temperature and high shear force during the internal mixing and extrusion process, the extruded halogen-free flame-retardant cable materials will experience material decomposition, resulting in a decrease in extrusion quality and affecting the performance of halogen-free flame-retardant cable materials. Therefore, how to promote the control of extrusion temperature and speed during the internal mixing and extrusion process of halogen-free flame-retardant cable material preparation to improve the extrusion quality of halogen-free flame-retardant cable materials is one of the urgent problems to be solved currently. Summary of the Invention

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is how to promote the control of extrusion temperature and speed during the internal mixing and extrusion process of halogen-free flame-retardant cable material preparation to improve the extrusion quality of halogen-free flame-retardant cable materials.

[0006] To solve the above problems, the present invention provides a preparation process of a halogen-free flame-retardant cable material. This preparation process involves a mixer, an internal mixing device, an extrusion device, a pelletizing device, and an intelligent temperature control extrusion system arranged in the extrusion device, and specifically includes the following steps: S1. Raw material preparation, weighing the corresponding raw materials according to the formula ratio; S2. Mixing, putting the weighed raw materials into the mixer and mixing them evenly; S3. Internal mixing and extrusion, S31. Transporting the mixed raw materials to the internal mixing device for internal mixing treatment of the raw materials; S32. Transporting the internally mixed raw materials to the extrusion device for melting and extrusion; S33. During the process of incorporating and extruding, the extrusion temperature sensing component installed in the extrusion equipment monitors and triggers the temperature of the flowing material during melting extrusion. Then, the intelligent temperature control extrusion system intelligently regulates the extrusion temperature and extrusion speed of the extrusion equipment according to the data monitored and triggered by the extrusion temperature sensing component; S34. When the extrusion temperature sensing component monitors and generates a high-temperature trigger signal for transmission, the intelligent temperature control extrusion system controls to reduce the extrusion temperature and extrusion speed of the extrusion equipment; S35. When the extrusion temperature sensing component monitors and generates a low-temperature trigger signal for transmission, the intelligent temperature control extrusion system controls to increase the extrusion temperature and extrusion speed of the extrusion equipment; S36. When the extrusion temperature sensing component monitors and generates a normal temperature signal for transmission, the intelligent temperature control extrusion system maintains the original set control of the extrusion temperature and extrusion speed; S4. Cooling and pelletizing. The strip-shaped material extruded by the extrusion equipment is cooled and then conveyed into the pelletizing equipment, and the pelletizing equipment crushes and pelletizes it to obtain the halogen-free flame-retardant cable material; S5. Performance detection. The prepared halogen-free flame-retardant cable material is subjected to performance detection. After passing the detection, it is stored in the warehouse.

[0007] In the above preparation process of the halogen-free flame-retardant cable material, through the synergistic effect of the extrusion temperature and extrusion speed, it is possible to avoid the temperature at which the material decomposes during extrusion of the halogen-free flame-retardant cable material, and improve the preparation quality of the halogen-free flame-retardant cable material.

[0008] As a further improvement of this application, an extrusion barrel is fixedly installed at the upper end of the extrusion equipment. An extrusion screw is rotatably arranged in the extrusion barrel. An extrusion die is fixedly installed at the right end of the extrusion barrel. An extrusion temperature sensing component is arranged in the extrusion die. A driving structure that cooperates with the extrusion screw is fixedly installed at the lower end of the extrusion equipment. A temperature control structure located on the right side of the driving structure is fixedly installed at the lower end of the extrusion equipment. And the upper end of the temperature control structure is sleeved outside the extrusion barrel. An intelligent controller that cooperates with the driving structure and the temperature control structure respectively is fixedly installed at the front end of the extrusion equipment; An intelligent temperature control extrusion system is carried in the intelligent controller. The intelligent temperature control extrusion system includes an intelligent temperature control processing unit. The input end of the intelligent temperature control processing unit is connected with an extrusion parameter setting unit, an extrusion temperature acquisition unit, and an extrusion speed acquisition unit. The output end of the intelligent temperature control processing unit is connected with an extrusion temperature regulation unit, an extrusion speed regulation unit, an extrusion regulation compensation unit, and an extrusion parameter output unit. The output end of the extrusion regulation compensation unit is respectively signal-connected with the extrusion temperature regulation unit and the extrusion speed regulation unit; The input end of the extrusion parameter setting unit is signal-connected to the control buttons provided on the intelligent controller. The input end of the extrusion temperature acquisition unit is signal-connected to the extrusion temperature sensing assembly. The input end of the extrusion speed acquisition unit is signal-connected to the speed sensor provided on the driving structure. The output end of the extrusion temperature control unit is signal-connected to the temperature control structure. The output end of the extrusion speed control unit is signal-connected to the driving structure. The output end of the extrusion parameter output unit is respectively signal-connected to the display provided on the intelligent controller and the memory provided within the intelligent controller.

[0009] As a supplement to the further improvement of the present application, the extrusion die includes an extrusion diversion plate. A plurality of extrusion shunt columns are embedded at the right end of the extrusion diversion plate. A triangular diversion block is fixedly connected to the left end of the extrusion diversion plate. An extrusion temperature sensing assembly that cooperates with the extrusion shunt columns is embedded within the triangular diversion block. The extrusion temperature sensing assembly includes an induction cylinder embedded within the triangular diversion block. A heat conduction block is embedded at the left end of the induction cylinder. The right end of the heat conduction block extends into the induction cylinder and is fixedly connected to a thermal deformation strip. The right end of the thermal deformation strip is fixedly connected to an accompanying slider. An auxiliary spring sleeved outside the thermal deformation strip is fixedly connected between the heat conduction block and the accompanying slider.

[0010] As a supplement to the further improvement of the present application, the thermal deformation strip is made of a composite of multiple memory metal strips, and can generate elongation deformation when the temperature is higher than the set value range, generate contraction deformation when the temperature is lower than the set value range, and generate recovery deformation when the temperature is within the set value range.

[0011] As a supplement to the further improvement of the present application, the extrusion die further includes a diversion plate fixedly connected to the right end of the extrusion barrel. A diversion board is fixedly connected to the right end of the diversion plate, and the right end of the diversion board is fixedly connected to the extrusion diversion plate. A forming guide plate is fixedly connected to the right end of the extrusion diversion plate, and an extrusion plate is fixedly connected to the right end of the forming guide plate. Diversion channels that communicate with the extrusion barrel are provided within both the diversion plate and the diversion board. A plurality of diversion holes are provided in the extrusion diversion plate on the upper and lower sides of the extrusion shunt columns, and the diversion holes communicate with the diversion channels. Extrusion channels that communicate with the diversion holes are provided within the forming guide plate and the extrusion plate.

[0012] As a supplement to the further improvement of the present application, the left end of the triangular diversion block extends into the diversion channel and is located at the middle position of the diversion board. The right end of the extrusion shunt column extends into the extrusion channel and is flush with the right end of the extrusion plate.

[0013] As a supplement to the further improvement of the present application, a water cooling circulation structure is provided within the extrusion die. The output end of the intelligent temperature control processing unit is further connected to a water cooling coordination unit. The output end of the extrusion regulation compensation unit is signal-connected to the water cooling coordination unit. The output end of the water cooling coordination unit is signal-connected to the water cooling circulation structure.

[0014] As a further improvement of the present application, an opening is provided at the right end of the induction cylinder, which is in contact with the extrusion shunt column. A high-temperature contact block that cooperates with the extrusion shunt column is fixedly connected to the right end of the slider. A barrier ring sleeved outside the auxiliary spring is fixedly connected to the middle of the induction cylinder, and a low-temperature contact ring that cooperates with the accompanying slider is fixedly connected to the right end of the barrier ring.

[0015] As a supplement to the further improvement of the present application, the extrusion temperature acquisition unit includes a temperature acquisition module, a high-temperature trigger module, and a low-temperature trigger module. The input end of the temperature acquisition module is signal-connected to a temperature sensor provided at the right end of the extrusion cylinder. The input end of the high-temperature trigger module is signal-connected to the high-temperature contact block, and the input end of the low-temperature trigger module is signal-connected to the low-temperature contact ring; The output ends of the temperature acquisition module, the high-temperature trigger module, and the low-temperature trigger module are connected to a temperature data processing module. The output end of the temperature data processing module is connected to a temperature data transmission module, and the output end of the temperature data transmission module is signal-connected to the intelligent temperature control processing unit.

[0016] In summary, through the cooperation of the intelligent temperature control extrusion system and the extrusion temperature induction component, during the extrusion preparation process of the halogen-free flame-retardant cable material, the extrusion parameters can be automatically adjusted adaptively according to the actual change of the extrusion temperature. While ensuring the preparation efficiency of the halogen-free flame-retardant cable material and promoting its preparation benefit, it can also effectively improve the intelligent level in the preparation process of the halogen-free flame-retardant cable material. Through the synergistic effect of the extrusion temperature and the extrusion speed, it can avoid the temperature at which the material decomposes during the extrusion of the halogen-free flame-retardant cable material, improve the preparation quality of the halogen-free flame-retardant cable material, reduce the defective rate, and effectively promote the economic benefit of preparing the halogen-free flame-retardant cable material. Description of the Drawings

[0017] Figure 1 It is the process flow chart of the first and second implementation modes of the present application; Figure 2 It is the axonometric view of the extrusion equipment of the first and second implementation modes of the present application; Figure 3 It is the control logic diagram of the intelligent temperature control extrusion system of the first and second implementation modes of the present application; Figure 4 It is the front sectional view of the extrusion equipment of the first and second implementation modes of the present application; Figure 5 It is of the first and second implementation modes of the present application Figure 4 The partial enlarged view at A in Figure 6 It is the partial enlarged view of the extrusion temperature induction component of the first and second implementation modes of the present application when the temperature is normally sensed; Figure 7Partial enlarged view of the extrusion temperature sensing component in the 1st and 2nd embodiments of the present application during high-temperature sensing; Figure 8 Partial enlarged view of the extrusion temperature sensing component in the 1st and 2nd embodiments of the present application during low-temperature sensing; Figure 9 Axonometric sectional view of the extrusion deflector in the 1st and 2nd embodiments of the present application.

[0018] Explanation of the reference numerals in the figure: 1 Extrusion equipment, 11 Intelligent controller, 12 Driving structure, 13 Temperature control structure, 2 Extrusion barrel, 21 Extrusion screw, 3 Extrusion die, 31 Extrusion deflector, 311 Triangular deflector block, 32 Extrusion shunt column, 33 Extrusion channel, 4 Extrusion temperature sensing component, 41 Sensing cylinder, 42 Heat conduction block, 43 Thermal deformation strip, 44 Companion slider, 45 Auxiliary spring, 5 High-temperature contact block, 6 Barrier ring, 61 Low-temperature contact ring. Specific embodiments

[0019] The following will make a detailed description of the two embodiments of the present application in conjunction with the accompanying drawings.

[0020] The 1st embodiment: Figure 1 - Figure 9 Illustrate the preparation process of the halogen-free flame-retardant cable material. This preparation process involves a mixer, a kneading equipment, an extrusion equipment 1, a pelletizing equipment, and an intelligent temperature control extrusion system arranged in the extrusion equipment 1. The specific steps are as follows: S1. Raw material preparation, weigh the corresponding raw materials according to the formula ratio; Select non-toxic and halogen-free environmental protection raw materials, such as flame retardants, fillers, plasticizers, and stabilizers, mainly including inorganic flame retardants such as magnesium hydroxide, aluminum hydroxide, and polyphosphoric amide, and matrix resins such as polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate copolymer (EVA); S2. Mixing, put the weighed raw materials into the mixer and mix the raw materials evenly; S3. Kneading and extrusion, S31. Transport the mixed raw materials to the kneading equipment and conduct kneading treatment on the raw materials; Transport the raw materials after kneading treatment to the extrusion equipment 1 and melt-extrude them; The extrusion temperature is controlled within the range of 100 - 160 °C to avoid material decomposition and bubble generation; Taking the extrusion equipment 1 with an extrusion specification of Φ90 as an example, the temperature control structure 13 divides the extrusion barrel 2 into 4 temperature control zones from left to right. The first zone is 125 - 140 °C, the second zone is 130 - 150 °C, the third zone is 150 - 165 °C, and the fourth zone is 155 - 170 °C. The temperature sensor at the right end of the extrusion barrel 2 described in the second implementation mode below is set in the fourth zone. For the temperature control of the flowing material entering the extrusion die 3, the temperature is controlled at 160 - 175 °C when it is at the diversion plate position and 155 - 170 °C when it is at the flow guide plate position; S33. During the process of incorporating extrusion, the extrusion temperature sensing component 4 set in the extrusion equipment 1 monitors and triggers the temperature of the molten extruded flowing material. Then, the intelligent temperature control extrusion system intelligently regulates the extrusion temperature and extrusion speed of the extrusion equipment 1 according to the data monitored and triggered by the extrusion temperature sensing component 4; S34. When the extrusion temperature sensing component 4 monitors and generates a high - temperature trigger signal for transmission, the intelligent temperature control extrusion system controls to reduce the extrusion temperature and extrusion speed of the extrusion equipment 1; S35. When the extrusion temperature sensing component 4 monitors and generates a low - temperature trigger signal for transmission, the intelligent temperature control extrusion system controls to increase the extrusion temperature and extrusion speed of the extrusion equipment 1; S36. When the extrusion temperature sensing component 4 monitors and generates a normal - temperature signal for transmission, the intelligent temperature control extrusion system maintains the original set extrusion temperature and extrusion speed control; S4. Cooling and pelletizing. The strip - shaped material extruded by the extrusion equipment 1 is cooled and then transported into the pelletizing equipment, where the pelletizing equipment crushes and pelletizes it to obtain the halogen - free flame - retardant cable material; S5. Performance detection. The prepared halogen - free flame - retardant cable material is subjected to performance detection. After passing the detection, it is stored in the warehouse. Through the cooperation of the intelligent temperature control extrusion system and the extrusion temperature sensing component 4, during the preparation process of the halogen - free flame - retardant cable material, the extrusion parameters can be automatically adjusted adaptively according to the actual change of the extrusion temperature. While ensuring the preparation efficiency of the halogen - free flame - retardant cable material and promoting its preparation benefit, it can also effectively improve the degree of intelligence in the preparation process of the halogen - free flame - retardant cable material. Through the synergistic effect of the extrusion temperature and extrusion speed, it can avoid the temperature at which the material decomposes during the extrusion of the halogen - free flame - retardant cable material, improve the preparation quality of the halogen - free flame - retardant cable material, reduce the rejection rate, and effectively promote the economic benefit of preparing the halogen - free flame - retardant cable material.

[0021] The second implementation mode: Figure 1 - Figure 9The preparation process of a halogen-free flame-retardant cable material is shown. At the upper end of an extrusion device 1, an extrusion barrel 2 is fixedly installed. An extrusion screw 21 is rotatably arranged inside the extrusion barrel 2. At the right end of the extrusion barrel 2, an extrusion die 3 is fixedly installed. An extrusion temperature sensing assembly 4 is arranged inside the extrusion die 3. At the lower end of the extrusion device 1, a driving structure 12 that cooperates with the extrusion screw 21 is fixedly installed. At the lower end of the extrusion device 1, a temperature control structure 13 located on the right side of the driving structure 12 is fixedly installed, and the upper end of the temperature control structure 13 is sleeved outside the extrusion barrel 2. At the front end of the extrusion device 1, an intelligent controller 11 that cooperates with the driving structure 12 and the temperature control structure 13 is fixedly installed; An intelligent temperature control extrusion system is carried in the intelligent controller 11. The intelligent temperature control extrusion system includes an intelligent temperature control processing unit. The input end of the intelligent temperature control processing unit is connected to an extrusion parameter setting unit, an extrusion temperature acquisition unit, and an extrusion speed acquisition unit. The output end of the intelligent temperature control processing unit is connected to an extrusion temperature regulation unit, an extrusion speed regulation unit, an extrusion regulation compensation unit, and an extrusion parameter output unit. The output end of the extrusion regulation compensation unit is respectively connected to the extrusion temperature regulation unit and the extrusion speed regulation unit in a signal connection; The input end of the extrusion parameter setting unit is connected to a control button arranged on the intelligent controller 11 in a signal connection. The input end of the extrusion temperature acquisition unit is connected to the extrusion temperature sensing assembly 4 in a signal connection. The input end of the extrusion speed acquisition unit is connected to a speed sensor arranged on the driving structure 12 in a signal connection. The output end of the extrusion temperature control unit is connected to the temperature control structure 13 in a signal connection. The output end of the extrusion speed control unit is connected to the driving structure 12 in a signal connection. The output end of the extrusion parameter output unit is respectively connected to a display arranged on the intelligent controller 11 and a memory arranged inside the intelligent controller 11 in a signal connection. By arranging the extrusion temperature sensing assembly 4 inside the extrusion die 3, during the extrusion operation of the extrusion device 1, the monitoring function of the actual extrusion temperature can be realized. With the cooperation of the intelligent temperature control extrusion system, the intelligent adjustment and compensation function of the extrusion parameters of the extrusion device 1 can be realized, effectively promoting the environmental adaptability of the extrusion device 1, ensuring its extrusion quality, improving the preparation quality of the halogen-free flame-retardant cable material, and promoting the economic benefits of the extrusion device 1.

[0022] Figure 4 - Figure 9 It is shown that the extrusion die 3 includes an extrusion diversion plate 31. At the right end of the extrusion diversion plate 31, a plurality of extrusion shunt columns 32 are embedded. At the left end of the extrusion diversion plate 31, a triangular diversion block 311 is fixedly connected. An extrusion temperature sensing assembly 4 that cooperates with the extrusion shunt columns 32 is embedded inside the triangular diversion block 311; The extrusion temperature sensing component 4 includes a sensing cylinder 41 embedded in the triangular diversion block 311. A heat conduction block 42 is embedded at the left end of the sensing cylinder 41. The right end of the heat conduction block 42 extends into the sensing cylinder 41 and is fixedly connected to a thermal deformation strip 43. The right end of the thermal deformation strip 43 is fixedly connected to an accompanying slider 44. An auxiliary spring 45 sleeved outside the thermal deformation strip 43 is fixedly connected between the heat conduction block 42 and the accompanying slider 44. Figure 6 - Figure 8 It is shown that the thermal deformation strip 43 is made of a composite of multiple memory metal strips, which can produce elongation deformation when the temperature is higher than the set value range, contraction deformation when the temperature is lower than the set value range, and recovery deformation when the temperature is within the set value range. During the extrusion operation of the extrusion device 1, the extrusion screw 21 conveys the flowing material in the extrusion barrel 2 into the extrusion die 3 and contacts the triangular diversion block 311, directly transmitting heat into the extrusion temperature sensing component 4, causing the thermal deformation strip 43 to generate temperature deformation, and being able to trigger different states according to temperature changes, feeding back the actual extrusion temperature state to the extrusion device 1, and being able to effectively realize the coordinated regulation of the extrusion temperature and speed during the subsequent extrusion process of the extrusion device 1, promoting the extrusion quality of the extrusion device 1.

[0023] Figure 4 - Figure 9 It is shown that the extrusion die 3 further includes a diversion plate fixedly connected to the right end of the extrusion barrel 2. A guide plate is fixedly connected to the right end of the diversion plate, and the right end of the guide plate is fixedly connected to the extrusion diversion plate 31. A forming guide plate is fixedly connected to the right end of the extrusion diversion plate 31, and an extrusion plate is fixedly connected to the right end of the forming guide plate; Diversion channels communicating with the extrusion barrel 2 are provided in both the diversion plate and the guide plate. A plurality of diversion holes are provided in the extrusion diversion plate 31 on both the upper and lower sides of the extrusion diversion column 32, and the diversion holes communicate with the diversion channels. Extrusion channels 33 communicating with the diversion holes are provided in the forming guide plate and the extrusion plate. The cooperation of the diversion channels, the diversion holes, the extrusion diversion column 32, and the extrusion channels 33 can effectively realize the functions of diverting and extruding and forming the flowing material output from the extrusion barrel 2. The setting of the diversion holes can play a role in promoting heat dissipation, avoiding problems such as large internal and external temperature differences in the strip material extruded from the subsequent extrusion channels 33, difficult shaping, surface plasticization, and cracking.

[0024] Figure 5It is shown that the left end of the triangular guide block 311 extends into the drainage channel and is located in the middle of the guide plate, and the right end of the extrusion diversion column 32 extends into the extrusion channel 33 and is flush with the right end of the extrusion plate. The setting of the triangular guide block 311 can guide the flow material in the drainage channel so that it can effectively flow into the guide hole, and can also cooperate with the extrusion temperature sensing component 4 to collect the temperature of the flow material while guiding, so as to facilitate real-time feedback of the actual extrusion temperature data, improve the intelligence and coordination of the extrusion equipment 1, promote the extrusion quality of the halogen-free flame retardant cable material by the extrusion equipment 1, and improve the economic benefit of preparing halogen-free flame retardant cable material.

[0025] Figure 3 - Figure 5 and Figure 9 It is shown that a water-cooling circulation structure is arranged in the extrusion die 3, and the water-cooling circulation structure includes water-cooling pipes respectively arranged in the guide plate, the extrusion guide plate 31, the forming guide plate and the extrusion plate. The input end of the water-cooling pipe is connected to a water-cooling circulation pump, and the output end of the water-cooling pipe is connected to a heat recovery water tank. The output end of the intelligent temperature control processing unit is also connected to a water-cooling coordination unit. The output end of the extrusion regulation and compensation unit is connected to the water-cooling coordination unit signal, and the output end of the water-cooling coordination unit is connected to the water-cooling circulation structure signal. The output end of the water-cooling coordination unit is connected to the water-cooling circulation pump signal. The temperature control effect can be adjusted by adjusting the power of the water-cooling circulation. The setting of the water-cooling circulation structure and the water-cooling coordination unit can further promote the intelligent coordination of the extrusion equipment 1. When the extrusion temperature is abnormal, it can cooperate with the adjustment of the water-cooling circulation effect of the extrusion die 3 to achieve the effect of further temperature regulation of the flowing material entering the extrusion die 3, while ensuring its fluidity in the extrusion die 3, ensuring its subsequent extrusion quality in the extrusion die 3.

[0026] Figure 6 - Figure 8 It is shown that the right end of the sensing tube 41 is provided with an opening and abuts against the extrusion diverter column 32, the right end of the accompanying slider 44 is fixedly connected with a high-temperature resistance block 5 which cooperates with the extrusion diverter column 32, the middle part of the sensing tube 41 is fixedly connected with a barrier ring 6 which is sleeved on the outside of the auxiliary spring 45, and the right end of the barrier ring 6 is fixedly connected with a low-temperature resistance ring 61 which cooperates with the accompanying slider 44. The setting of the high-temperature resistance block 5 and the low-temperature resistance ring 61 can effectively simplify the data of temperature monitoring feedback, improve the effectiveness of temperature feedback, and promote data processing efficiency.

[0027] Figure 3 The extrusion temperature acquisition unit includes a temperature acquisition module, a high temperature trigger module and a low temperature trigger module. The input end of the temperature acquisition module is connected to the temperature sensor signal disposed at the right end of the extrusion barrel 2, the input end of the high temperature trigger module is connected to the high temperature resistance block 5, and the input end of the low temperature trigger module is connected to the low temperature resistance ring 61. The output ends of the temperature acquisition module, high-temperature trigger module, and low-temperature trigger module are connected to a temperature data processing module. The output end of the temperature data processing module is connected to a temperature data transmission module. The output end of the temperature data transmission module is signal-connected to the intelligent temperature control processing unit. The settings of the temperature acquisition module, high-temperature trigger module, and low-temperature trigger module can improve the efficiency of temperature data feedback and simplify the temperature data. At the same time, it can effectively assist the intelligent temperature control processing unit in verifying and judging the temperature feedback data, promoting the effectiveness of subsequent coordinated control of the extrusion speed, and ensuring the extrusion quality of the halogen-free flame-retardant cable material.

[0028] Figure 1 - Figure 9 It is shown that before the extrusion equipment 1 starts the extrusion operation, the technician inputs the set extrusion temperature, extrusion speed, and extrusion water cooling data into the extrusion parameter setting unit through the control buttons set on the intelligent controller 11. Then, the extrusion parameter setting unit transmits these extrusion parameters to the intelligent temperature control processing unit. The intelligent temperature control processing unit processes and analyzes the parameters. Then, after the extrusion equipment 1 is started, it issues a temperature control instruction to the extrusion temperature control unit respectively, so that the extrusion temperature control unit controls the temperature control structure 13 to act and perform temperature control processing on each area position of the extrusion barrel 2. It issues a speed control instruction to the extrusion speed control unit, so that the extrusion speed control unit issues a control instruction to the drive structure 12 to control the drive structure 12 to drive the extrusion screw 21 to rotate at a set speed. It issues a water cooling cycle control instruction to the water cooling coordination unit, so that the water cooling coordination unit controls the water cooling cycle structure to act and perform heat exchange cooling on the drainage channels, diversion holes, and extrusion channels 33 in the extrusion die 3. And during the process of the drive structure 12 driving the extrusion screw 21 to rotate, the speed sensor will collect the rotation speed of the drive structure 12 and then transmit the data to the extrusion speed acquisition unit. The extrusion speed acquisition unit transmits the extrusion speed data to the intelligent temperature control processing unit, which is convenient for the intelligent temperature control processing unit to judge and calculate the actual extrusion speed of the extrusion equipment 1.

[0029] When the extrusion screw 21 rotates continuously and gradually conveys the molten flowing material in the extrusion barrel 2 into the extrusion die 3, through the setting of the temperature control structure 13 on the extrusion barrel 2, the temperature in the extrusion barrel 2 is controlled in zones. The temperature sensor located at the right end of the extrusion barrel 2 will collect the temperature data of the flowing material moving to the right end of the extrusion barrel 2 and then transmit the data to the temperature acquisition module in the extrusion temperature acquisition unit. Then, the flowing material in the extrusion barrel 2 flows into the drainage channels on the drainage plate and diversion plate under the extrusion action of the extrusion screw 21, and then flows into the diversion holes under the diversion guidance of the triangular diversion block 311, and then enters the extrusion channel 33. With the cooperation of the extrusion split column 32 and the extrusion channel 33, it is extruded into strip-shaped material; While the triangular diversion block 311 plays a role in diversion and guidance, the temperature of the flowing material will be conducted through the triangular diversion block 311 into the heat conduction block 42 on the induction cylinder 41, and then act on the thermal deformation strip 43. When the temperature is too high and causes the thermal deformation strip 43 to produce an elongation deformation, the thermal deformation strip 43 will drive the accompanying slider 44 to move to the right. After the high-temperature contact block 5 comes into contact with the extrusion diversion column 32, the high-temperature contact block 5 will transmit a trigger signal to the high-temperature trigger module. The high-temperature trigger module will transmit the data to the temperature data processing module. The temperature data processing module will process and judge the extrusion temperature according to the received temperature data and high-temperature trigger data, and then transmit the judged temperature data to the temperature data transmission module. The temperature data transmission module will transmit it to the intelligent temperature control processing unit. The intelligent temperature control processing unit will analyze based on the high-temperature data, and then transmit the analyzed and compensated data to the extrusion regulation compensation unit. The extrusion regulation compensation unit will first transmit the corresponding compensation data to the water-cooling coordination unit and the extrusion speed regulation unit. After the water-cooling coordination unit receives the water-cooling compensation data, it will control the water-cooling circulation structure to improve the circulation efficiency, promote the heat exchange and cooling of the flowing material located in the diversion channel and the diversion hole, and promote the uniformity of the temperature of the flowing material. After the extrusion speed regulation unit receives the speed compensation data, it will regulate the rotation speed of the driving structure 12. By reducing the speed of the driving structure 12, the speed of the extrusion screw 21 extruding the flowing material is reduced, avoiding the problem of material decomposition in subsequent extrusion due to high temperature and fast speed. Then the extrusion regulation compensation unit will send the temperature compensation data to the extrusion temperature regulation unit, so that the extrusion temperature regulation unit will send a temperature control command to the temperature control structure 13, so that the temperature control structure 13 will act on the extrusion cylinder 2 to reduce the extrusion temperature in the extrusion cylinder 2; When the temperature is too low and the thermal deformation strip 43 undergoes shrinkage deformation, the thermal deformation strip 43 will drive the accompanying slider 44 to move to the left, causing the left end of the accompanying slider 44 to abut against the low-temperature contact ring 61. The low-temperature contact ring 61 will transmit the trigger signal to the low-temperature trigger module, and the low-temperature trigger module will transmit the data to the temperature data processing module. The temperature data processing module processes and judges the extrusion temperature according to the received temperature data and the low-temperature trigger data, and then transmits the judged temperature data to the temperature data transmission module. The temperature data transmission module transmits it to the intelligent temperature control processing unit. The intelligent temperature control processing unit analyzes the low-temperature temperature data, and then transmits the analyzed and compensated data to the extrusion regulation and compensation unit. The extrusion regulation and compensation unit first transmits the corresponding compensation data to the extrusion speed control unit and the extrusion temperature control unit. The extrusion speed control unit receives the compensation data. After receiving the data, the drive structure 12 is controlled to increase the speed of the regulating function, so that the extrusion speed of the extrusion screw 21 on the flowing material is increased, and the fluidity of the flowing material in the extrusion die 3 is increased to ensure the extrusion efficiency and extrusion quality. After receiving the compensation data, the extrusion temperature control unit controls the temperature control structure 13 to regulate the temperature of the extrusion barrel 2 to ensure the fluidity of the subsequent flowing material. Then the extrusion regulation compensation unit will send a water cooling compensation function to the water cooling coordination unit, so that the water cooling function of the water cooling coordination unit on the extrusion die 3 is reduced to avoid the problem of poor flow of the flowing material due to overcooling. Through the three-party coordination of the drive structure 12, the temperature control structure 13 and the water cooling circulation structure, the intelligent adaptive regulation of the extrusion of halogen-free flame retardant cable materials is promoted, the extrusion quality of halogen-free flame retardant cable materials is promoted, its application performance is guaranteed, and the application and development of halogen-free flame retardant cable materials are promoted. When the temperature is within the set range or the temperature returns to the set range, the thermal deformation strip 43 does not deform, produces a smaller deformation or produces a recovery deformation. When the thermal deformation strip 43 does not deform or produces a smaller deformation, it will not cause the high-temperature resistance block 5 and the low-temperature resistance ring 61 to be triggered. When the thermal deformation strip 43 produces a recovery deformation, the high-temperature resistance block 5 or the low-temperature resistance ring 61 will be released. The temperature data processing module will directly transmit the temperature data to the temperature data transmission module, and the temperature data transmission module will transmit the data to the intelligent temperature control processing unit. After receiving the data of normal temperature, the intelligent temperature control processing unit will transmit the data to the extrusion regulation and compensation unit. The extrusion regulation and compensation unit will transmit the compensation data to the extrusion speed control unit and the water cooling coordination unit respectively, so that the extrusion speed control unit and the water cooling coordination unit restore the initially set control parameters, and act on the drive structure 12 and the water cooling circulation structure respectively, so as to maintain the extrusion speed and water cooling effect that meet the extrusion temperature, and effectively ensure the extrusion quality of the halogen-free flame-retardant cable material.

[0030] In the process of regulating and compensating the extrusion effect by the intelligent temperature control processing unit, its control data will be transmitted to the extrusion parameter output unit. The extrusion parameter output unit respectively transmits the data to the display on the intelligent controller 11 to display the actual extrusion data and parameters to the technicians. And it will also transmit the data to the memory for storage, facilitating subsequent retrieval and traceability of the data by the technicians, and promoting the continuous improvement and development of the preparation process of the halogen-free flame-retardant cable material.

[0031] Combined with the current actual requirements, the above implementation manner adopted in this application, the scope of protection is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A process for preparing a halogen-free flame-retardant cable material, characterized in that: The preparation process involves a mixer, a mixing device, an extrusion device (1), a pelletizing device, and an intelligent temperature control extrusion system arranged in the extrusion device (1), and specifically comprises the following steps: S1. Raw material preparation: weigh the corresponding raw materials according to the formula ratio; S2. Mixing: After weighing, put the raw materials into the mixer and mix the raw materials evenly; S3. Mixing and extrusion, S31. The mixed raw materials are transported to a mixing device for mixing the raw materials; S32. The raw material after the mixing treatment is transported to the extrusion device (1) and melt-extruded; S33. During the extrusion process, the extrusion temperature sensing component (4) disposed in the extrusion device (1) monitors and triggers the temperature of the molten extruded flow material, and then the intelligent temperature control extrusion system intelligently controls the extrusion temperature and extrusion speed of the extrusion device (1) according to the data monitored and triggered by the extrusion temperature sensing component (4); S34. When the extrusion temperature sensing component (4) monitors and generates a high temperature trigger signal, the intelligent temperature control extrusion system controls and reduces the extrusion temperature and extrusion speed of the extrusion device (1); S35. When the extrusion temperature sensing component (4) monitors the low temperature trigger signal, the intelligent temperature control extrusion system controls the extrusion device (1) to increase the extrusion temperature and extrusion speed; S36. When the extrusion temperature sensing component (4) monitors and generates a normal temperature signal, the intelligent temperature control extrusion system maintains the original set extrusion temperature and extrusion speed control; S4. Cooling and pelletizing. The strip material extruded by the extrusion device (1) is cooled and then transported to a pelletizing device, where it is crushed and pelletized to obtain a halogen-free flame-retardant cable material. S5. Performance testing: the halogen-free flame-retardant cable materials are tested for performance and stored after passing the test.

2. The process for preparing a halogen-free flame-retardant cable material according to claim 1, characterized in that: An extrusion barrel (2) is fixedly mounted on the upper end of the extrusion device (1), an extrusion screw (21) is rotatably arranged in the extrusion barrel (2), an extrusion die (3) is fixedly mounted on the right end of the extrusion barrel (2), an extrusion temperature sensing component (4) is arranged in the extrusion die (3), a driving structure (12) matched with the extrusion screw (21) is fixedly mounted on the lower end of the extrusion device (1), a temperature control structure (13) located on the right side of the driving structure (12) is fixedly mounted on the lower end of the extrusion device (1), and the upper end of the temperature control structure (13) is sleeved on the outer side of the extrusion barrel (2), and an intelligent controller (11) matched with the driving structure (12) and the temperature control structure (13) is fixedly mounted on the front end of the extrusion device (1); The intelligent controller (11) is equipped with an intelligent temperature control extrusion system, the intelligent temperature control extrusion system comprises an intelligent temperature control processing unit, the input end of the intelligent temperature control processing unit is connected to an extrusion parameter setting unit, an extrusion temperature acquisition unit and an extrusion speed acquisition unit, the output end of the intelligent temperature control processing unit is connected to an extrusion temperature control unit, an extrusion speed control unit, an extrusion control compensation unit and an extrusion parameter output unit, and the output end of the extrusion control compensation unit is respectively connected to the extrusion temperature control unit and the extrusion speed control unit for signals; The input end of the extrusion parameter setting unit is signal-connected to a control button disposed on the intelligent controller (11); the input end of the extrusion temperature acquisition unit is signal-connected to an extrusion temperature sensing component (4); the input end of the extrusion speed acquisition unit is signal-connected to a speed sensor disposed on a drive structure (12); the output end of the extrusion temperature control unit is signal-connected to a temperature control structure (13); the output end of the extrusion speed control unit is signal-connected to the drive structure (12); and the output end of the extrusion parameter output unit is signal-connected to a display disposed on the intelligent controller (11) and a memory disposed in the intelligent controller (11).

3. The process for preparing a halogen-free flame-retardant cable material according to claim 2, characterized in that: The extrusion die (3) comprises an extrusion guide plate (31), a plurality of extrusion flow diversion columns (32) are embedded at the right end of the extrusion guide plate (31), a triangular flow guide block (311) is fixedly connected to the left end of the extrusion guide plate (31), and an extrusion temperature sensing component (4) matching the extrusion flow diversion columns (32) is embedded in the triangular flow guide block (311); The extrusion temperature sensing assembly (4) comprises a sensing tube (41) embedded in a triangular guide block (311); a heat conduction block (42) is embedded at the left end of the sensing tube (41); the right end of the heat conduction block (42) extends into the sensing tube (41) and is fixedly connected to a heat deformation strip (43); the right end of the heat deformation strip (43) is fixedly connected to an accompanying slider (44); an auxiliary spring (45) sleeved on the outside of the heat deformation strip (43) is fixedly connected between the heat conduction block (42) and the accompanying slider (44).

4. The process for preparing a halogen-free flame-retardant cable material according to claim 3, characterized in that: The right end of the induction tube (41) is provided with an opening and abuts against the extrusion diversion column (32); the right end of the accompanying slider (44) is fixedly connected to a high-temperature abutment block (5) that matches the extrusion diversion column (32); the middle part of the induction tube (41) is fixedly connected to a barrier ring (6) sleeved on the outside of the auxiliary spring (45); the right end of the barrier ring (6) is fixedly connected to a low-temperature abutment ring (61) that matches the accompanying slider (44).

5. The process for preparing a halogen-free flame-retardant cable material according to claim 4, characterized in that: The extrusion temperature acquisition unit comprises a temperature acquisition module, a high temperature trigger module and a low temperature trigger module, the input end of the temperature acquisition module is connected to a temperature sensor signal arranged at the right end of the extrusion barrel (2), the input end of the high temperature trigger module is connected to a high temperature resistance block (5), and the input end of the low temperature trigger module is connected to a low temperature resistance ring (61); The output ends of the temperature acquisition module, the high temperature trigger module and the low temperature trigger module are connected to the temperature data processing module, the output end of the temperature data processing module is connected to the temperature data transmission module, and the output end of the temperature data transmission module is connected to the intelligent temperature control processing unit signal.

6. The process for preparing a halogen-free flame-retardant cable material according to claim 3, characterized in that: The extrusion die (3) further comprises a guide plate fixedly connected to the right end of the extrusion barrel (2), the right end of the guide plate being fixedly connected to the guide plate, and the right end of the guide plate being fixedly connected to the extrusion guide plate (31), the right end of the extrusion guide plate (31) being fixedly connected to the molding guide plate, and the right end of the molding guide plate being fixedly connected to the extrusion plate; The guide plate and the guide plate are both provided with a guide channel connected to the extrusion barrel (2); the extrusion guide plate (31) is provided with a plurality of guide holes distributed on the upper and lower sides of the extrusion diversion column (32), and the guide holes are connected to the guide channel; the molding guide plate and the extrusion plate are provided with an extrusion channel (33) connected to the guide holes.

7. The process for preparing a halogen-free flame-retardant cable material according to claim 6, characterized in that: The left end of the triangular guide block (311) extends into the drainage channel and is located in the middle of the guide plate, and the right end of the extrusion diversion column (32) extends into the extrusion channel (33) and is flush with the right end of the extrusion plate.

8. The process for preparing a halogen-free flame-retardant cable material according to claim 3, characterized in that: The thermal deformation strip (43) is made of a composite of multiple memory metal strips and can generate an elongation deformation when the temperature is higher than a set value range, a contraction deformation when the temperature is lower than the set value range, and a recovery deformation when the temperature is within the set value range.

9. The process for preparing a halogen-free flame-retardant cable material according to claim 2, characterized in that: A water cooling circulation structure is arranged inside the extrusion die (3); the output end of the intelligent temperature control processing unit is also connected to a water cooling coordination unit; the output end of the extrusion regulation and compensation unit is signal-connected to the water cooling coordination unit; and the output end of the water cooling coordination unit is signal-connected to the water cooling circulation structure.

Images