A molding equipment for silicone rubber polymer materials and its control method

Abstract

This invention relates to the field of silicone rubber injection molding technology, and more particularly to a silicone rubber polymer material molding equipment and its control method. It includes a molding sub-equipment and a silicone rubber polymer material melt injection molding sub-equipment. The molding sub-equipment includes a hydraulic base, a hydraulic telescopic plate mounted on the hydraulic base, a top mold, and a bottom mold. The hydraulic telescopic plate is used to lift the bottom mold placed on it upwards, causing the bottom mold and top mold to close and form an injection cavity. The silicone rubber polymer material melt injection molding sub-equipment includes a horizontally arranged extruder barrel. The equipment of this invention uses the hydraulic telescopic plate to lift the bottom mold placed on it upwards, thereby causing the bottom mold and top mold to close and form an injection cavity. Then, molten silicone rubber polymer material is injected into the injection cavity through the extruder barrel in the silicone rubber polymer material melt injection molding sub-equipment, and the silicone rubber polymer material is cooled through a water-cooling channel in the top mold, thereby completing the injection molding of the silicone rubber polymer material.

Description

Technical Field

[0001] This invention relates to the field of silicone rubber injection molding technology, and in particular to a silicone rubber polymer material molding equipment and its control method. Background Technology

[0002] In the injection molding process of silicone rubber polymer materials, the molding die connected to the extruder outlet often requires manual intervention for demolding and mold cleaning, resulting in discontinuous and intermittent production. This uncertainty in production rhythm leads to significant variability in the residence time of molten silicone rubber in the homogenization and compression sections of the extruder. As a heat-sensitive material, silicone rubber is highly susceptible to cross-linking scorching or molecular chain pyrolysis degradation under sustained high temperatures. This not only causes defects such as yellowing, bubbling, and decreased mechanical properties in the product, but can also, in severe cases, block the flow channels and cause production interruptions.

[0003] Existing silicone rubber polymer injection molding equipment typically only has heating equipment with fixed heating parameters. While it can handle relatively regular delayed operations, it lacks a corresponding cooling path, making it difficult to effectively cool the barrel temperature based on the actual residence conditions. It can only adjust the temperature by reducing the heating power of the heating elements. Furthermore, the lack of a cooling system limits its temperature control accuracy and temperature adjustment methods. Summary of the Invention

[0004] The purpose of this invention is to provide a molding equipment for silicone rubber polymer materials, which solves the technical problem that existing silicone rubber polymer material injection molding equipment only has a heating system and lacks a cooling system during the melting of silicone rubber polymer materials, resulting in poor temperature control.

[0005] To address the aforementioned technical problems, this application provides a silicone rubber polymer material molding equipment, including a molding sub-equipment and a silicone rubber polymer material melt injection molding sub-equipment. The molding sub-equipment includes a hydraulic base, a hydraulic telescopic plate mounted on the hydraulic base, a top mold, and a bottom mold. The hydraulic telescopic plate is used to lift the bottom mold placed on it upwards, so that the bottom mold and the top mold close together to form an injection cavity. The silicone rubber polymer material melt injection molding sub-equipment includes a horizontally arranged extruder barrel. A feed hopper is provided at one end of the top of the extruder barrel, and a discharge head is provided at the other end. The discharge head is connected to the injection hole of the top mold in the molding sub-equipment, so that the molten silicone rubber polymer material enters the injection cavity through the guide pipe inside the top mold. A motor for driving the extrusion screw to rotate is installed at the end of the extruder barrel away from the discharge head.

[0006] The extruder barrel consists of an inner barrel, a middle barrel, and an outer barrel. A heating channel and a cooling channel are provided between the inner barrel and the middle barrel, and a spare cooling channel is provided between the middle barrel and the outer barrel.

[0007] Optionally, a heating channel and a cooling channel are provided in the interlayer between the inner cylinder and the intermediate cylinder, and the heating channel and cooling channel are spirally distributed around the inner cylinder. A vacuum interlayer and a backup cooling channel are provided in the interlayer between the intermediate cylinder and the outer cylinder, and the vacuum interlayer and the backup cooling channel are also spirally distributed around the inner cylinder. The vacuum interlayer and the backup cooling channel are aligned with the heating channel and the cooling channel, respectively. A partition is provided between the heating channel and the cooling channel, and between the vacuum interlayer and the backup cooling channel. A heat insulation plate is provided on the side of the partition facing the heating channel. The heat insulation plate is made of ceramic. Multiple independently controlled resistance heating elements are installed inside the heating channel, and these elements are fitted into the inner cylinder. Air vents are located on the bottom wall of the outer cylinder at positions corresponding to the air hood, connecting the hood to the interior space of the backup cooling channel. An exhaust pipe is installed on the outer wall of the outer cylinder, communicating with the backup cooling channel for air circulation. A cooling pipe is also installed on the outer wall of the outer cylinder, communicating with the cooling channel for transporting cooling oil. A junction box is located at the top of the extruder barrel for connecting the wiring to the resistance heating elements.

[0008] Optionally, the discharge head is configured as a conical structure, with the internal cavity of the discharge head gradually decreasing in the direction away from the extruder barrel.

[0009] Optionally, the outer cylinder is fitted outside the inner cylinder, the middle cylinder is positioned between the inner and outer cylinders, the extrusion screw is rotatably mounted inside the inner cylinder, the feed hopper and the discharge head are connected to the internal space of the inner cylinder, and a motor for driving the extrusion screw to rotate is installed at the end of the extruder barrel away from the discharge head.

[0010] On the other hand, embodiments of this application also provide a control method for a silicone rubber polymer material molding equipment, the method comprising:

[0011] After the ejector head stops injection, a countdown begins. If no upward trigger command is received from the hydraulic telescopic plate after the countdown ends, the first delay warning is triggered to warn the mold operator that the mold timeout has occurred and the delay timer is started.

[0012] After the delay time exceeds the first delay threshold, the corresponding simulated length of material accumulation in the homogenization section is retrieved from the operating parameter library based on the current motor speed and the delay duration. The simulated length of material accumulation in the homogenization section increases with the increase of the delay duration.

[0013] When the simulated length of material accumulation in the homogenization section extends to the middle of the compression section, a cooling warning and a motor speed warning are triggered to reduce the motor speed and the heating temperature of the inner cylinder.

[0014] Optionally, when the simulated length of material accumulation in the homogenization section extends to the middle of the compression section, a cooling warning and a motor speed warning are triggered to reduce the motor speed and the heating temperature of the inner cylinder, including:

[0015] The current motor speed is obtained and reduced by 30% to 35%. Based on the reduced motor speed, the growth rate of the simulated length of the homogenized material accumulation in the homogenization section is calibrated in the operating parameter library. Based on this growth rate, the position of the simulated length of the homogenized material accumulation in the inner cylinder after 30 to 40 seconds is calculated. Based on the occupied length of the homogenized material in the compression section corresponding to this position, the corresponding target temperature is retrieved from the operating parameters. The target temperature is lower than the temperature of the current feeding section.

[0016] Based on the target temperature, the circulating temperature of the cooling oil in the cooling channel is reduced, and when the difference between the current temperature of the compression section and the target temperature is greater than the difference threshold corresponding to the current cooling oil, the fan module is activated to accelerate the cooling rate of the cooling oil, thereby reducing the risk of pyrolysis of the molten silicone rubber polymer material in the inner cylinder.

[0017] The beneficial effects of this invention are:

[0018] The silicone rubber polymer material molding equipment of the present invention uses a hydraulic telescopic plate to lift the bottom mold placed on it upward, thereby closing the bottom mold and the top mold to form an injection cavity. Then, molten silicone rubber polymer material is injected into the injection cavity through the extruder barrel in the silicone rubber polymer material melting injection molding sub-equipment, and the silicone rubber polymer material is cooled through the water cooling channel in the top mold, thereby completing the injection molding of the silicone rubber polymer material.

[0019] The extruder barrel consists of an inner barrel, a middle barrel, and an outer barrel. A heating channel and a cooling channel are provided between the inner barrel and the middle barrel. The cooling channel is a cooling oil circulation channel, which, together with the heating channel, enables precise control of the internal temperature of the inner barrel. When cooling is required, the inlet temperature of the cooling oil can be reduced. A backup cooling channel is provided between the middle barrel and the outer barrel, which can be regarded as a temporary cooling method. Since the cooling of the cooling oil is a relatively slow process, when the cooling demand is large, the cooling oil can be further cooled through the backup cooling channel. Because the extruder barrel is equipped with a basic cooling path and a temporary backup cooling path, together with the heating channel, precise temperature control is achieved during the melting process of silicone rubber polymer materials.

[0020] Specifically, precise temperature control significantly reduces the risk of pyrolysis of silicone rubber in a stagnant state. At the same time, the introduction of a linkage mechanism between cooling oil and air-cooled modules further enhances the temperature control capability of key sections, effectively ensuring the stability of product quality, extending the continuous operation cycle of equipment, and improving the intelligence level and reliability of intermittent production processes. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a silicone rubber polymer material molding equipment;

[0023] Figure 2 This is a schematic diagram of the silicone rubber polymer material melt injection molding sub-equipment in a silicone rubber polymer material molding equipment.

[0024] Figure 3 This is a schematic diagram of the internal structure of the extruder barrel (2) in the silicone rubber polymer material melt injection molding equipment.

[0025] Icon labels:

[0026] 1. Motor; 2. Extruder barrel; 3. Feed hopper; 4. Discharge head; 5. Junction box; 6. Fan shroud; 7. Exhaust pipe; 12. Bottom die; 13. Cooling pipe; 14. Hydraulic telescopic plate; 15. Top die; 16. Hydraulic base; 21. Heat insulation plate; 22. Inner cylinder; 23. Intermediate cylinder; 24. Outer cylinder; 25. Heating channel; 26. Cooling channel; 27. Partition plate; 28. Resistance heating element; 30. Extrusion screw; 31. Vacuum jacket; 32. Backup cooling channel; 33. Air vent; 34. Fan module. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Example 1:

[0030] like Figure 1 As shown, this embodiment provides a silicone rubber polymer material molding equipment, including a molding sub-equipment and a silicone rubber polymer material melt injection molding sub-equipment. The molding sub-equipment includes a hydraulic base 16, a hydraulic telescopic plate 14 disposed on the hydraulic base, a top mold 15, and a bottom mold 12. The hydraulic telescopic plate 14 is used to lift the bottom mold 12 placed on it upward, so that the bottom mold 12 and the top mold 15 close to form an injection cavity. The top mold 15 is also provided with an exhaust hole for discharging air from the injection cavity during the injection molding process. Figure 1 The details are not shown in the figure, but since the above content belongs to the conventional technical means in the field of injection molding, it will not be elaborated here. This molding sub-equipment is suitable for the single production of large injection molded products. In contrast to this embodiment, the molding sub-equipment can be regarded as a conventional existing stamping injection molding mold equipment.

[0031] like Figure 2 As shown, the silicone rubber polymer material melt injection molding sub-equipment includes a horizontally arranged extruder barrel 2. A feed hopper 3 is provided at one end of the top of the extruder barrel 2, and a discharge head 4 is provided at the other end. The discharge head 4 is connected to the injection hole of the top mold 15 in the molding sub-equipment, so that the molten silicone rubber polymer material enters the injection cavity through the guide pipe inside the top mold 15. The top mold 15 is not at room temperature, and heating modules are arranged around its guide pipe to prevent the molten silicone rubber polymer material in the guide pipe from solidifying. This is a conventional technical means in the art and will not be described in detail here. Secondly, cooling circulating water channels can be arranged around the injection cavity of the top mold 15 and the bottom mold 12 to accelerate the molding of the injection mold. This is a conventional technical means in the art and will not be described in detail here.

[0032] The extruder barrel 2 is equipped with a motor 1 for driving the extrusion screw 30 to rotate at the end away from the discharge head 4;

[0033] Secondly, such as Figure 3As shown, the extruder barrel 2 consists of an inner barrel 22, an intermediate barrel 23, and an outer barrel 24. A heating channel 25 and a cooling channel 26 are provided between the inner barrel 22 and the intermediate barrel 23. A spare cooling channel 32 is provided between the intermediate barrel 23 and the outer barrel 24 to cope with temporary and sudden cooling needs, such as when the molding process is interrupted due to the temporary departure of operators. In this case, the material melting continues, requiring a short-term, significant cooling to prevent the molten material from pyrolysis and deterioration when maintained at high temperatures for an extended period. Its specific structure can be as follows:

[0034] like Figure 3 As shown, a heating channel 25 and a cooling channel 26 are provided in the interlayer between the inner cylinder 22 and the intermediate cylinder 23. The heating channel 25 and the cooling channel 26 are spirally distributed around the inner cylinder 22, and a circulation recovery interface is provided at the end of the cooling channel 26 (not shown in the figure due to angle). Since the melting temperature of silicone rubber polymer materials is around 120°C, the cooling medium in the cooling channel 26 cannot be conventional water, but cooling oil. The heating channel 25 and the cooling channel 26 are in a stable configuration, meaning that the cooling oil acts not only as a coolant but also as a heat-insulating agent. It is gradually heated during slow flow, resulting in a stepped temperature change. The temperature at the inlet is lower, and it rises with the direction of propulsion, reaching its highest temperature at the outlet head 4. Therefore, the flow rate of the coolant and the resistance heating element 2... The power of 8 is a pre-set setting by the manufacturer and is not easily adjusted. The manufacturer only adjusts it when adapting it to the melting characteristics of hot-melt raw materials. It is not easily adjusted during production, and even if it is adjusted, it is only a minor adjustment. Moreover, due to the heat preservation characteristics of the cooling oil, its cooling rate is poor. Therefore, in this embodiment, a vacuum jacket 31 and a spare cooling channel 32 are provided in the interlayer between the intermediate cylinder 23 and the outer cylinder 24. The vacuum jacket 31 and the spare cooling channel 32 are also spirally distributed around the inner cylinder 22. The vacuum jacket 31 and the spare cooling channel 32 are aligned with the heating channel 25 and the cooling channel 26, respectively. That is, the vacuum jacket 31 is aligned with the heating channel 25, and the spare cooling channel 32 is aligned with the cooling channel 26. The vacuum jacket 31 mainly prevents the heat in the heating channel 25 from radiating to the outer cylinder 24 and its surroundings.

[0035] A partition 27 separates the heating channel 25 and the cooling channel 26, as well as the vacuum jacket 31 and the backup cooling channel 32. A heat insulation plate 21, made of ceramic, is installed on the side of the partition 27 facing the heating channel 25. Multiple independently controlled resistance heating elements 28 are installed inside the heating channel 25, and these elements are fitted into the inner cylinder 22. A vent 33 is provided on the bottom wall of the outer cylinder 24 at a position corresponding to the vent 6, connecting the vent 6 to the interior space of the backup cooling channel 32. An exhaust vent is provided on the outer wall of the outer cylinder 24. Pipe 7 and exhaust pipe 7 are connected to the backup cooling channel 32 for air circulation. When cooling channel 26 needs to dissipate heat, cold air is blown into the backup cooling channel 32 through fan module 34 to cool the outer wall of cooling channel 26, thereby cooling the cooling oil. However, it should be noted that this is only a temporary measure with limited cooling effect. Its main purpose is to prevent the molten material from maintaining a high temperature for a long time, so it does not need to achieve a good cooling effect, but only a 4-5℃ reduction, that is, to prevent the accumulated molten material from being continuously maintained at the critical temperature. Secondly, since the backup cooling channel 32 is not frequently used, it needs to be set on the periphery of cooling channel 26 to assist in further cooling of the coolant. Furthermore, it will not lose too much heat when not in use. Cooling pipe 13 is also provided on the outer wall of the outer cylinder 24. Cooling pipe 13 is connected to cooling channel 26 for conveying cooling oil. Junction box 5 is provided on the top of extruder barrel 2 for wiring connection of resistance heating element 28.

[0036] Secondly, in this embodiment, the discharge head 4 is configured as a conical structure, and the internal cavity of the discharge head 4 gradually decreases in the direction away from the extruder barrel 2.

[0037] Secondly, in this embodiment, the outer cylinder 24 is sleeved outside the inner cylinder 22, the middle cylinder 23 is disposed between the inner cylinder 22 and the outer cylinder 24, the extrusion screw 30 is rotatably installed inside the inner cylinder 22, the feed hopper 3 and the discharge head 4 are connected to the internal space of the inner cylinder 22, and a motor 1 for driving the extrusion screw 30 to rotate is installed at the end of the extruder barrel 2 away from the discharge head 4.

[0038] In operation, the silicone rubber polymer material is first fed into the equipment through the feed hopper 3. The motor 1 is started, driving the extrusion screw 30 to rotate within the inner cylinder 22, extruding and conveying the fed silicone rubber polymer material. Simultaneously, the resistance heating element 28 is energized through the junction box 5, generating heat. This heat, combined with cooling oil, forms a gradient heating channel, gradually increasing from the feed inlet to the discharge outlet. The overall process can be divided into three sections: the feeding section, the compression section, and the homogenization section. The molten material content in the compression section is a dynamic value, which can be considered a dynamic adjustment section. During injection molding, the molten material content decreases, and during the waiting period before the next injection, it gradually increases again. The heat generated by the resistance heating element 28 heats the silicone rubber polymer material within the inner cylinder 22, causing it to melt. The molten silicone rubber polymer material, driven by the extrusion screw 30, passes sequentially through the inner cylinder 22 and the discharge head 4.

[0039] Example 2:

[0040] This embodiment, based on Embodiment 1, provides a control method for a silicone rubber polymer material molding equipment. It is applicable to emergency cooling measures when the molding process is halted due to temporary operator absence. The method includes:

[0041] Step S100: After the injection head 4 stops, start the countdown. If the countdown ends and the upward trigger command of the hydraulic telescopic plate 14 is still not received, the upward trigger command is the injection countdown command. The upward trigger command can be regarded as a mold closing command, triggering the first delay warning to warn the mold operator that the mold timeout has occurred and start the delay timer. At this time, the proportion of molten material in the compression section has exceeded the preset accumulation value, and the accumulation will become more and more serious as time goes on. When the corresponding threshold is exceeded, it is necessary to cool down the molten material accumulated in the homogenization section and compression section to prevent its pyrolysis.

[0042] Step S200: After the delay time exceeds the first delay threshold, the corresponding simulated length of material accumulation in the homogenization section is retrieved from the operating parameter library based on the current motor speed 1 and the delay duration. The simulated length of material accumulation in the homogenization section increases with the increase of the delay duration.

[0043] Step S300: When the simulated length of the material accumulation in the homogenization section extends to the middle of the compression section, a cooling warning and a motor 1 speed warning are triggered to reduce the speed of the motor 1 and the heating temperature of the inner cylinder 22.

[0044] The principle behind the above steps is as follows: The temperature of the inner cylinder 22 can be roughly considered as three sections: the feeding section, the compression section, and the homogenization section. The homogenization section has the highest temperature, but the molten material cannot remain at this temperature for an extended period. Therefore, the homogenization section requires cooling. Figure 2The frontmost fan shroud 6; secondly, the material at the rear of the homogenization section will also melt, because the temperature of the compression section is sufficient to melt materials that have been in that section for a long time. This can be understood as the material that has been there for a long time not only melting, but also, due to the accumulation and blockage at the front, remaining in the high-temperature region for an even longer period, thus increasing the risk of pyrolysis. The compression section corresponds to... Figure 2 The reason for using the backup cooling channel 32 is as follows: During the long-term circulation of the cooling oil, the cooling oil itself is at a high temperature throughout the entire cooling system. Even if the heat dissipation intensity at the rear of the oil cooling system is temporarily increased to lower the initial temperature of the newly introduced cooling oil, the oil's specific heat capacity is high, resulting in a negligible increase in temperature. Furthermore, the cooling oil's flow rate is slow, and this parameter is unchangeable during production. Therefore, the introduction of new cooling oil is slow, and the temperature reduction effect is poor, necessitating the introduction of the backup cooling channel 32 to directly dissipate heat from the outer wall of the cooling channel 26. Since it directly acts on the high-temperature oil currently in the cooling channel 26, the heat dissipation effect is better, but it can still only be considered an additional solution.

[0045] The implementation method of step S300 is as follows:

[0046] Step S310: Obtain the current rotational speed of motor 1 and reduce it by 30% to 35%. Based on the reduced rotational speed of motor 1, calibrate the simulated length growth rate of material accumulation in the homogenization section in the operating parameter library. The rotational speed of motor 1 and the melting rate of the material are not linearly related and can only be obtained through a limited number of experimental measurements. Then, generate the corresponding parameter correlation table. It can also be noted that motor 1 will not stop rotating because the molten material in the homogenization and compression sections of the extrusion screw 30 is in a liquid-like state and will not get stuck due to injection stopping. When the material enters from the feed hopper 3, there are many gaps between them. The process from the feeding section to the compression section is a solid material melting and extrusion process. Therefore, there will be no situation where the extrusion screw 30 gets stuck in a short time. Based on this growth rate value, calculate the length growth rate after 30 to 40 seconds. The simulated length of the homogenization section material accumulation is located at the position extending backward within the inner cylinder 22. Based on the corresponding position of the homogenization section material in the compression section, the corresponding target temperature is retrieved from the operating parameters. The target temperature is lower than the temperature of the current feeding section. The target temperature is the inlet temperature of the cooling oil in the cooling pipe 13, which mainly acts as the active heat dissipation of the oil cooling system (not shown in the figure). When the adjustment force is large, that is, when the difference between the temperature of the compression section and the target temperature is greater than the preset threshold, the backup heat dissipation will be activated. This is because the active heat dissipation requires a certain amount of time to reduce the cooling oil to the target temperature, and during this period, the backup heat dissipation is needed for temporary additional heat dissipation, as it can directly act on the compression section and homogenization section of the extruder barrel 2 in the backup cooling channel 32.

[0047] Step S320: Reduce the circulating temperature of the cooling oil in the cooling channel 26 by the target temperature, and when the difference between the temperature of the current compression section and the target temperature is greater than the difference threshold corresponding to the current cooling oil, wherein the temperature of the current compression section is a preset fixed value and is not detected by a temperature sensor, start the fan module 34 to accelerate the cooling rate of the cooling oil, thereby reducing the risk of pyrolysis of the molten silicone rubber polymer material in the inner cylinder 22.

[0048] The control method described in this embodiment achieves intelligent identification and response to manual operation timeouts by constructing a delay early warning mechanism and a material accumulation simulation algorithm, i.e., an operating parameter comparison table. The system can dynamically predict thermal risk areas based on the real-time calculated material accumulation length and trigger motor speed reduction and precise cooling commands for specific sections in advance. This method transforms traditional passive cooling into active thermal management based on model prediction. Through the coordinated control of speed and temperature, it significantly reduces the risk of pyrolysis of silicone rubber in a stagnant state. Simultaneously, the introduction of a linkage mechanism between cooling oil and the air-cooled module further enhances the temperature control capability of key sections, effectively ensuring product quality stability, extending the continuous operation cycle of the equipment, and improving the intelligence level and reliability of intermittent production processes.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A control method of a silicone rubber polymer forming device, the device comprising a forming sub-device and a silicone rubber polymer melt injection molding sub-device, the forming sub-device comprising a hydraulic base (16), a hydraulic telescopic plate (14) arranged on the hydraulic base, a top mold (15) and a bottom mold (12), the hydraulic telescopic plate (14) being used to lift the bottom mold (12) placed thereon upwards so that the bottom mold (12) is combined with the top mold (15) to form an injection molding cavity; the silicone rubber polymer melt injection molding sub-device comprising a horizontally arranged extruder barrel (2), one end of the top of the extruder barrel (2) being provided with a feeding hopper (3), the other end being provided with a discharge head (4), the discharge head (4) being connected with an injection molding hole in the top mold (15) of the forming sub-device, so that the silicone rubber polymer in a molten state enters the injection molding cavity through a flow guide pipe inside the top mold (15), and a motor (1) for driving the rotation of an extrusion screw (30) is installed at one end of the extruder barrel (2) away from the discharge head (4); The extruder barrel (2) is composed of an inner barrel (22), an intermediate barrel (23) and an outer barrel (24), and a heating channel (25) and a cooling channel (26) are arranged between the inner barrel (22) and the intermediate barrel (23), and a standby cooling channel (32) is arranged between the intermediate barrel (23) and the outer barrel (24), characterized in that, the control method comprising: starting a countdown after the discharge head (4) stops injection molding, if the uplink trigger instruction of the hydraulic telescopic plate (14) is still not received after the countdown ends, triggering a first delay warning to warn the mold operator of mold closing timeout, and starting a delay timer; when the delay timer exceeds a first delay threshold, based on the current motor (1) speed and the delay time length, the corresponding homogenization section material accumulation simulation length is retrieved from the running parameter library, the homogenization section material accumulation simulation length increases with the increase of the delay time length; when the homogenization section material accumulation simulation length extends to the middle of the compression section, triggering a cooling warning and a motor (1) speed warning to reduce the speed of the motor (1) and the heating temperature of the inner cylinder (22).

2. The control method of a silicone rubber polymer material molding apparatus according to claim 1, characterized by, when the homogenization section material accumulation simulation length extends to the middle of the compression section, triggering a cooling warning and a motor (1) speed warning to reduce the speed of the motor (1) and the heating temperature of the inner cylinder (22), comprising: obtaining the current speed of the motor (1) and reducing it by 30-35%, and based on the reduced motor (1) speed, the homogenization section material accumulation simulation length growth rate value is calibrated in the running parameter library, and based on the growth rate value, the position of the homogenization section material accumulation simulation length in the inner cylinder (22) after 30-40 seconds is calculated, and based on the corresponding homogenization section material in the compression section, the corresponding target temperature is retrieved from the running parameter, the target temperature is less than the current feeding section temperature, and the target temperature is the cooling oil inlet temperature of the cooling takeover (13); based on the target temperature, the circulating temperature of the cooling oil in the cooling channel is reduced, and in the case that the difference between the current compression section temperature and the target temperature is greater than the corresponding difference threshold of the current cooling oil, the fan module (34) is started to accelerate the cooling speed of the cooling oil, thereby reducing the pyrolysis risk of the silicone rubber polymer in a molten state in the inner cylinder (22).

3. The control method of a silicone rubber polymer molding apparatus according to claim 2, characterized by, The inner cylinder (22) and the middle cylinder (23) are provided with heating channels (25) and cooling channels (26) in the interlayer, the heating channels (25) and the cooling channels (26) are spirally distributed around the inner cylinder (22), the middle cylinder (23) and the outer cylinder (24) are provided with a vacuum interlayer (31) and a standby cooling channel (32) in the interlayer, the vacuum interlayer (31) and the standby cooling channel (32) are also spirally distributed around the inner cylinder (22), and the vacuum interlayer (31) and the standby cooling channel (32) are aligned with the heating channels (25) and the cooling channels (26) respectively, the heating channels (25) and the cooling channels (26) and the vacuum interlayer (31) and the standby cooling channel (32) are separated by a partition plate (27), one side of the partition plate (27) facing the heating channels (25) is provided with a heat insulation plate (21), the material of the heat insulation plate (21) is ceramic, a plurality of independently controlled resistance heating sheets (28) are arranged in the heating channels (25), the resistance heating sheets (28) are attached to the inner cylinder (22), the outer cylinder (24) is provided with a wind hole (33) corresponding to the air baffle (6) at the bottom wall, the wind hole (33) communicates the air baffle (6) and the internal space of the standby cooling channel (32), the outer cylinder (24) is provided with an exhaust pipe (7) on the outer wall, the exhaust pipe (7) communicates with the standby cooling channel (32) for air circulation, the outer cylinder (24) is also provided with a cooling connector (13) on the outer wall, the cooling connector (13) is in communication with the cooling channel (26) for the delivery of cooling oil, and the extruder cylinder (2) is provided with a junction box (5) at the top for the line connection of the resistance heating sheets (28).

4. The control method of a silicone rubber polymer molding apparatus according to claim 3, characterized by, The discharge head (4) is arranged in a conical structure, and the internal cavity of the discharge head (4) gradually decreases away from the extruder cylinder (2).

5. The control method of a silicone rubber polymer molding apparatus according to claim 3, wherein The outer cylinder (24) is arranged outside the inner cylinder (22), the middle cylinder (23) is arranged between the inner cylinder (22) and the outer cylinder (24), the inner cylinder (22) is rotatably installed with an extrusion screw (30), the feeding hopper (3) and the discharge head (4) are in communication with the internal space of the inner cylinder (22), and the extruder cylinder (2) is provided with a motor (1) at one end away from the discharge head (4) for driving the rotation of the extrusion screw (30).

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