Sizing material pretreatment device

Abstract

The invention provides a sizing material pretreatment device, and relates to the technical field of sizing material heating pretreatment, the sizing material pretreatment device comprises a support frame, a mounting platform is arranged in the support frame, a hot air supply assembly is mounted on the mounting platform, a transmission frame is fixedly connected to the upper end of the support frame, a transmission belt is mounted in the transmission frame, and a sizing material preheating assembly is arranged on the transmission frame; the sizing material preheating assembly communicates with the hot air supply assembly, and the left end and the right end of the sizing material preheating assembly are each provided with a temperature detection device. The rubber material is pretreated and heated, so that the processing performance and the processing smoothness of the rubber material are improved when the rubber material is processed by a subsequent extruder, and the stability and the reliability of plasticizing the rubber material by the subsequent extruder are ensured. And a rubber material preheating treatment process is carried out, so that the problem of product quality caused by insufficient heating and plasticizing capability of the extruder on the rubber material in a subsequent production process is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of rubber heating pretreatment, and in particular to a rubber pretreatment device. Background Art

[0002] The process of the extruder acting on the rubber material: the rubber material (raw rubber sheet) is originally in a highly elastic state. The feeding mechanism conveys the rubber material into the barrel, and the screw shears, heats, and plasticizes the rubber material, and keeps it at a certain temperature through the heating system of the extruder barrel. As the screw rotates, it gradually transforms into a molten state. However, in production, there are quality problems in rubber extrusion due to poor thermal plasticization of the raw rubber sheet, which affects the product delivery efficiency, stability, and process operation control of subsequent processes.

[0003] In the prior art, the rubber material is directly processed by an extruder, and no pretreatment device is provided to pre-treat the rubber material before the rubber material enters the extruder. In production, there may be quality problems in rubber material extrusion due to poor thermoplastication of the original rubber sheet, which affects the stability of product quality. Summary of the invention

[0004] The present invention provides a rubber pretreatment device to solve the problem that the prior art lacks pretreatment of rubber, resulting in quality problems in rubber extrusion due to poor thermal plasticization of raw rubber sheets during production, which affects the stability of product quality.

[0005] On the one hand, the present invention provides a rubber pretreatment device, including a support frame, a mounting platform is provided in the support frame, a hot air supply assembly is installed on the mounting platform, a transmission frame is fixedly connected to the upper end of the support frame, a conveyor belt is installed in the transmission frame, a rubber preheating assembly is provided on the transmission frame, the rubber preheating assembly is connected to the hot air supply assembly, a first temperature sensor and a second temperature sensor are respectively provided at the left and right ends of the rubber preheating assembly, the first temperature sensor is used to detect the initial temperature of the rubber, and the second temperature sensor is used to detect the temperature of the rubber after pretreatment.

[0006] Preferably, the hot air supply component includes a hot air box with an electric heating pipe installed in it, a hot air outlet pipe and a hot air return pipe connected to the hot air box, a fan is installed at the air inlet of the hot air outlet pipe, and the hot air outlet pipe and the hot air return pipe are both connected to the rubber preheating component.

[0007] Preferably, the rubber preheating assembly includes a mounting frame, which is fixedly connected to the transmission frame, and a heating roller is rotatably connected to the mounting frame. A plurality of air outlet holes are provided on the outer surface of the heating roller, and a hot air outlet pipe and a hot air return pipe are both connected to the inner cavity of the heating roller. A gear 1 is fixedly mounted on the heating roller, and a driving motor is fixedly mounted on the mounting frame. A gear 2 is fixedly connected to the output end of the driving motor, and gear 1 is meshed with gear 2 for transmission.

[0008] Preferably, a control system is also included, and the control system includes: A first speed adjustment module, used to adjust the conveying speed of the conveyor belt; A second speed regulating module, used for regulating the rotation speed of the heating drum; The air supply control module is used to regulate the hot air supply of the hot air supply component.

[0009] Preferably, the first speed regulating module includes: Demand acquisition module, used to obtain the real-time demand for rubber materials; Height sensor, used to obtain the accumulation height of the rubber on the conveyor belt; A first speed control unit is used to calculate the target conveying speed of the conveyor belt according to the real-time demand of the rubber material and the real-time rubber material accumulation height of the conveyor belt, and adjust the actual conveying speed of the conveyor belt to the target conveying speed of the conveyor belt; ; is the target conveying speed of the conveyor belt; U is the demand for rubber per unit time; D is the width of the conveyor belt; H is the real-time accumulation height of the rubber on the conveyor belt.

[0010] Preferably, the second speed regulating module includes: A first speed sensor, used to detect the actual conveying speed of the conveyor belt; A third temperature sensor is used to detect the surface temperature of the heating roller; A second speed sensor is used to detect the actual rotation speed of the heating drum; A target speed calculation unit, used for calculating a target speed of the heating drum; ;in, is the target rotation speed of the heating roller; is the actual conveying speed of the conveyor belt; is the slip rate of the rubber on the conveyor belt; It is the ideal heating time of the rubber compound; It is the current actual rubber heating time; is the temperature uniformity adjustment coefficient; is the actual surface temperature of the heating roller; is the target temperature of the rubber compound; The adjustment and verification unit is used to verify whether the difference between the actual rotation speed of the heating roller and the target rotation speed of the heating roller is greater than a preset first adjustment threshold. If it is greater than the first adjustment threshold, the actual rotation speed of the heating roller is adjusted to the target rotation speed of the heating roller, otherwise the rotation speed of the heating roller is not adjusted.

[0011] Preferably, the air supply control module comprises: The air supply temperature control unit is used to adjust the air supply temperature of the hot air; The hot air flow control unit is used to adjust the hot air supply flow.

[0012] Preferably, the air supply temperature control unit comprises: A first flow sensor, used for detecting the air intake flow of the hot air box; A fourth temperature sensor, used to detect the intake air temperature of the hot air box; The power regulating subunit is used to periodically calculate the target power of the electric heating tube and regulate the actual power of the electric heating tube to the target power of the electric heating tube; ; Wherein, P is the target power of the electric heating tube; is the specific heat capacity of air; is the actual air intake flow of the current hot air box; is the standard operating temperature of the heating roller; is the thermal conductivity between the heating roller surface and the rubber surface; π is the pi; is the radius of the outer surface of the heating roller; is the width of the heating roller; It is the ratio of the contact area between the heating roller and the rubber surface to the outer surface area of ​​the heating roller; is the initial temperature of the rubber compound; is the convection heat transfer coefficient between the outer wall of the heating drum and the air; is the thermal conductivity between the hot air and the heating roller; is the radius of the inner cavity of the heating roller; is the width of the inner cavity of the heating drum; is the average air inlet temperature of the hot air box; is the thermal efficiency of the electric heating tube.

[0013] Preferably, the hot air flow control unit comprises: A target flow calculation subunit, used to calculate a target value of the hot air supply flow rate; ;in, is the target value of the hot air supply flow rate; is the specific heat capacity of the rubber; A is the projected area of ​​the heating area on the horizontal plane; H is the real-time accumulation height of the rubber on the conveyor belt; is the target temperature of the rubber compound; is the initial temperature of the rubber compound; is the thermal conductivity between the heating roller surface and the rubber surface; π is the pi; is the radius of the outer surface of the heating roller; is the width of the heating roller; It is the ratio of the contact area between the heating roller and the rubber surface to the outer surface area of ​​the heating roller; is the actual surface temperature of the heating roller; It is the current actual rubber heating time; When the hot air temperature is The total heat transferred from unit volume of hot air to the rubber material when is the current actual hot air temperature; The preset optimal hot air temperature; It is the total time that hot air has heating effect on rubber; is the proportion of hot air ejected from the air outlet; An adjustment judgment subunit is used to judge whether to adjust the air supply flow of hot air; ;in, is the flow adjustment value; is the target value of the hot air supply flow rate; is the actual air intake flow of the current hot air box; When the flow adjustment value is greater than the preset second adjustment threshold, the actual air supply flow of the hot air is adjusted to the target value of the air supply flow of the hot air, otherwise the actual air supply flow of the hot air is not adjusted.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The pre-treatment heating process of the rubber material improves the processing performance and smooth processing ability of the rubber material when the subsequent extruder processes the rubber material, and ensures the stability and reliability of the subsequent extruder plasticizing the rubber material. The pre-heating process of the rubber material prevents product quality problems caused by insufficient heating and plasticizing ability of the extruder in the subsequent production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle; Figure 3 It is a structural schematic diagram of the hot air supply assembly of the present invention.

[0017] Reference numerals: 1. Support frame; 2. Mounting platform; 3. Transmission frame; 4. Conveyor belt; 5. Hot air box; 6. Electric heating pipe; 7. Hot air outlet pipe; 8. Hot air return pipe; 9. Mounting frame; 10. Heating roller; 11. Gear 1; 12. Driving motor; 13. Gear 2; 14. First temperature sensor; 15. Second temperature sensor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] Example 1 The embodiment of the present invention provides a rubber pretreatment device, such as Figure 1-3 As shown, it includes a support frame 1, a mounting platform 2 is arranged inside the support frame 1, a hot air supply component is installed on the mounting platform 2, a transmission frame 3 is fixedly connected to the upper end of the support frame 1, a transmission belt 4 is installed inside the transmission frame 3, a rubber preheating component is arranged on the transmission frame 3, the rubber preheating component is connected with the hot air supply component, and a first temperature sensor 14 and a second temperature sensor 15 are respectively arranged at the left and right ends of the rubber preheating component, the first temperature sensor 14 is used to detect the initial temperature of the rubber, and the second temperature sensor 15 is used to detect the temperature of the rubber after pretreatment.

[0021] Preferably, the hot air supply component includes a hot air box 5, an electric heating pipe 6 is installed in the hot air box 5, a hot air outlet pipe 7 and a hot air return pipe 8 are connected to the hot air box 5, a fan is installed at the air inlet of the hot air outlet pipe 7, and the hot air outlet pipe 7 and the hot air return pipe 8 are both connected to the rubber preheating component.

[0022] Preferably, the rubber preheating assembly includes a mounting frame 9, which is fixedly connected to the transmission frame 3, and a heating roller 10 is rotatably connected to the mounting frame 9. A plurality of air outlet holes are provided on the outer surface of the heating roller 10, and the hot air outlet pipe 7 and the hot air return pipe 8 are both connected to the inner cavity of the heating roller 10. A gear 11 is fixedly mounted on the heating roller 10, and a drive motor 12 is fixedly mounted on the mounting frame 9. A gear 2 13 is fixedly connected to the output end of the drive motor 12, and the gear 11 and the gear 2 13 are meshed for transmission.

[0023] The beneficial effects of the above technical solution are: When pre-treating the rubber, the rubber is placed on the conveyor belt 4. Through the transportation of the conveyor belt 4, the rubber passes through the first temperature sensor 14, the rubber preheating component and the second temperature sensor 15 in sequence. The actual temperature of the rubber is detected by the two temperature detection devices, and the outlet temperature and outlet flow rate of the hot air box 5 are adjusted to keep the temperature of the rubber within an ideal range, thereby improving the physical properties of the rubber and improving the stability of product quality.

[0024] The pre-treatment heating process of the rubber material improves the processing performance and smooth processing ability of the rubber material when the subsequent extruder processes the rubber material, and ensures the stability and reliability of the subsequent extruder plasticizing the rubber material. The pre-heating process of the rubber material prevents product quality problems caused by insufficient heating and plasticizing ability of the extruder in the subsequent production process.

[0025] Example 2 Based on Example 1, the control system includes: A first speed adjustment module, used to adjust the conveying speed of the conveyor belt; The second speed regulating module is used to adjust the rotation speed of the heating drum 10; The air supply control module is used to regulate the hot air supply of the hot air supply component.

[0026] Preferably, the first speed regulating module includes: Demand acquisition module, used to obtain the real-time demand for rubber materials; A height sensor, used to obtain the accumulation height of the rubber material on the conveyor belt 4; The first speed control unit is used to calculate the target conveying speed of the conveyor belt 4 according to the real-time demand of the rubber material and the real-time rubber material accumulation height of the conveyor belt 4, and adjust the actual conveying speed of the conveyor belt 4 to the target conveying speed of the conveyor belt 4; ; is the target conveying speed of the conveyor belt 4; U is the demand for rubber per unit time; D is the width of the conveyor belt 4; H is the real-time accumulation height of the rubber on the conveyor belt 4.

[0027] Preferably, the second speed regulating module includes: A first speed sensor, used to detect the actual conveying speed of the conveyor belt 4; A third temperature sensor is used to detect the surface temperature of the heating drum 10; A second speed sensor is used to detect the actual rotation speed of the heating drum 10; A target speed calculation unit, used to calculate a target speed of the heating drum 10; ;in, is the target rotation speed of the heating roller 10; is the actual conveying speed of the conveyor belt 4; is the slip rate of the rubber material on the conveyor belt 4; It is the ideal heating time of the rubber compound; It is the actual current heating time of the rubber material; is the temperature uniformity adjustment coefficient; is the actual surface temperature of the heating roller 10; is the target temperature of the rubber compound; The adjustment and verification unit is used to verify whether the difference between the actual rotation speed of the heating roller 10 and the target rotation speed of the heating roller 10 is greater than a preset first adjustment threshold. If it is greater than the first adjustment threshold, the actual rotation speed of the heating roller 10 is adjusted to the target rotation speed of the heating roller 10, otherwise the rotation speed of the heating roller 10 is not adjusted.

[0028] In this embodiment, the rubber heating time refers to the length of time the rubber is in contact with the heating roller 10 .

[0029] In this embodiment, the slip rate refers to the ratio of the sliding speed of the rubber material on the conveyor belt 4 to the speed of the conveyor belt 4 .

[0030] In this embodiment, the rubber heating time refers to the time that the rubber is in the heating area.

[0031] The beneficial effects of the above technical solution are: The conveying speed of the conveyor belt is adjusted in real time according to the demand for rubber, so as to ensure that the supply of rubber matches the demand, avoiding insufficient supply of rubber or excessive supply of rubber causing the physical properties of the rubber to deteriorate after cooling down.

[0032] By adjusting the rotation speed of the heating roller 10, it is ensured that the contact surface between the heating roller 10 and the rubber is at an appropriate temperature, the rational use of heat is ensured, and the rubber obtains sufficient heat during the preheating process. At the same time, unnecessary energy waste is avoided, the energy loss of the pretreatment process is reduced, and at the same time, the rubber is ensured to be evenly heated during the preheating process, effectively improving the physical properties of the rubber.

[0033] Example 3 Based on Example 2, the gas supply control module includes: The air supply temperature control unit is used to adjust the air supply temperature of the hot air; The hot air flow control unit is used to adjust the hot air supply flow.

[0034] Preferably, the air supply temperature control unit comprises: A first flow sensor, used for detecting the air intake flow of the hot air box 5; A fourth temperature sensor, used to detect the intake air temperature of the hot air box 5; The power regulating subunit is used to regularly calculate the target power of the electric heating tube 6 and regulate the actual power of the electric heating tube 6 to the target power of the electric heating tube 6; ; Wherein, P is the target power of the electric heating tube 6; is the specific heat capacity of air; is the actual air intake flow rate of the current hot air box 5; is the standard operating temperature of the heating roller 10; is the thermal conductivity between the surface of the heating roller 10 and the surface of the rubber material; π is the pi; is the radius of the outer surface of the heating roller 10; is the width of the heating roller 10; is the ratio of the contact area between the heating roller 10 and the rubber surface to the outer surface area of ​​the heating roller 10; is the initial temperature of the rubber compound; is the convection heat transfer coefficient between the outer wall of the heating drum 10 and the air; is the thermal conductivity between the hot air and the heating roller 10; is the radius of the inner cavity of the heating roller 10; is the width of the inner cavity of the heating roller 10; is the average air inlet temperature of the hot air box 5; is the thermal efficiency of the electric heating tube 6.

[0035] Preferably, the hot air flow control unit comprises: A target flow calculation subunit, used to calculate a target value of the hot air supply flow rate; ;in, is the target value of the hot air supply flow rate; is the specific heat capacity of the rubber material; A is the projected area of ​​the heating area on the horizontal plane; H is the real-time accumulation height of the rubber material on the conveyor belt 4; is the target temperature of the rubber compound; is the initial temperature of the rubber compound; is the thermal conductivity between the surface of the heating roller 10 and the surface of the rubber material; π is the pi; is the radius of the outer surface of the heating roller 10; is the width of the heating roller 10; is the ratio of the contact area between the heating roller 10 and the rubber surface to the outer surface area of ​​the heating roller 10; is the actual surface temperature of the heating roller 10; It is the current actual rubber heating time; When the hot air temperature is The total heat transferred from unit volume of hot air to the rubber material when is the current actual hot air temperature; The preset optimal hot air temperature; It is the total time that hot air has heating effect on rubber; is the proportion of hot air ejected from the air outlet; An adjustment judgment subunit is used to judge whether to adjust the air supply flow of hot air; ;in, is the flow adjustment value; is the target value of the hot air supply flow rate; is the actual air intake flow rate of the current hot air box 5; When the flow adjustment value is greater than the preset second adjustment threshold, the actual air supply flow of the hot air is adjusted to the target value of the air supply flow of the hot air, otherwise the actual air supply flow of the hot air is not adjusted.

[0036] In this embodiment, the initial temperature of the rubber material refers to the temperature of the rubber material before pretreatment.

[0037] In this embodiment, the hot air temperature is When , the total heat transferred from unit volume of hot air to the rubber material is obtained by the test; In this embodiment, the ratio of hot air dissipated from the air outlet refers to the ratio of the flow rate of hot air ejected from the air outlet to the total flow rate of hot air. ;in, is the proportion of hot air ejected from the air outlet; It is the flow rate of hot air ejected from the air outlet; is the total hot air flow.

[0038] The beneficial effects of the above technical solution are: By regularly adjusting the power of the electric heating tube 6, it is ensured that the surface temperature of the heating roller 10 is stably maintained at the standard temperature, thereby ensuring a good preheating effect on the rubber while reducing the heat dissipation of the heating roller 10 to the external environment. By controlling the temperature of the heating roller 10 to remain stable, it is ensured that the rubber is heated evenly during the preheating process, and uneven preheating of the rubber due to temperature fluctuations of the heating roller 10 is avoided, thereby affecting the physical properties of the rubber. By obtaining the air intake conditions of the hot air box 5, the power of the electric heating tube 6 is adjusted in a targeted manner, thereby improving the stability of the hot air temperature, avoiding fluctuations in the hot air temperature, and ensuring the temperature stability of the heating roller 10. Through precise temperature control, unnecessary energy waste is reduced and the cost of heat treatment of the rubber is reduced.

[0039] Under the condition of ensuring the hot air temperature is stable, the hot air supply flow rate is adjusted to achieve accurate control of the rubber preheating effect. By controlling the total hot air flow rate of the heating drum 10, the hot air ejection amount from the heating drum 10 is accurately controlled, and the rubber preheating effect is accurately controlled, so as to ensure that the rubber is in a suitable temperature range after pretreatment, thereby ensuring the excellent physical properties of the rubber and improving the rubber pretreatment effect. By calculating the flow adjustment value, it is determined whether to adjust the hot air supply flow rate, thereby avoiding the shortening of the device life caused by frequent adjustment of the hot air flow rate. At the same time, through the screening effect of multi-frequency judgment results, the set value of the hot air supply flow rate can be made to have high anti-fluctuation, thereby further reducing the adjustment frequency of the hot air flow rate. Even if the rubber characteristics (such as rubber temperature) or the external environment characteristics (such as ambient temperature) suddenly change, it can still ensure that the temperature of the pretreated rubber is within the allowable range, thereby improving the resistance to fluctuations in the preheating effect (referring to the ability to remain within the allowable range after the preheating effect fluctuates).

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rubber pretreatment device, characterized in that: The invention comprises a support frame (1), wherein a mounting platform (2) is arranged inside the support frame (1), a hot air supply component is installed on the mounting platform (2), a transmission frame (3) is fixedly connected to the upper end of the support frame (1), a transmission belt (4) is installed inside the transmission frame (3), a rubber preheating component is arranged on the transmission frame (3), the rubber preheating component is connected to the hot air supply component, and a first temperature sensor (14) and a second temperature sensor (15) are arranged at the left and right ends of the rubber preheating component respectively, the first temperature sensor (14) is used to detect the initial temperature of the rubber, and the second temperature sensor (15) is used to detect the temperature of the rubber after pretreatment.

2. A rubber pretreatment device according to claim 1, characterized in that: The hot air supply component comprises a hot air box (5), an electric heating pipe (6) is installed in the hot air box (5), a hot air outlet pipe (7) and a hot air return pipe (8) are connected to the hot air box (5), a fan is installed at the air inlet of the hot air outlet pipe (7), and the hot air outlet pipe (7) and the hot air return pipe (8) are both connected to the rubber preheating component.

3. A rubber pretreatment device according to claim 2, characterized in that: The rubber preheating assembly comprises a mounting frame (9), the mounting frame (9) is fixedly connected to the transmission frame (3), a heating roller (10) is rotatably connected to the mounting frame (9), a plurality of air outlet holes are arranged on the outer surface of the heating roller (10), a hot air outlet pipe (7) and a hot air return pipe (8) are both connected to the inner cavity of the heating roller (10), a gear 1 (11) is fixedly mounted on the heating roller (10), a driving motor (12) is fixedly mounted on the mounting frame (9), a gear 2 (13) is fixedly connected to the output end of the driving motor (12), and the gear 1 (11) and the gear 2 (13) are meshed and transmitted.

4. A rubber pretreatment device according to claim 3, characterized in that: It also includes a control system, which includes: A first speed adjustment module, used to adjust the conveying speed of the conveyor belt; A second speed regulating module, used for regulating the rotation speed of the heating roller (10); The air supply control module is used to regulate the hot air supply of the hot air supply component.

5. A rubber pretreatment device according to claim 4, characterized in that: The first speed regulating module includes: Demand acquisition module, used to obtain the real-time demand for rubber materials; A height sensor, used for obtaining the accumulation height of the rubber material on the conveyor belt (4); A first speed control unit is used to calculate a target conveying speed of the conveyor belt (4) based on a real-time demand for the rubber material and a real-time rubber material accumulation height of the conveyor belt (4), and to adjust the actual conveying speed of the conveyor belt (4) to the target conveying speed of the conveyor belt (4); ; is the target conveying speed of the conveyor belt (4); U is the demand for rubber material per unit time; D is the width of the conveyor belt (4); and H is the real-time accumulation height of the rubber material on the conveyor belt (4).

6. A rubber pretreatment device according to claim 4, characterized in that: The second speed regulating module includes: A first speed sensor, used for detecting the actual conveying speed of the conveyor belt (4); a third temperature sensor, used for detecting the surface temperature of the heating roller (10); a second speed sensor, used for detecting the actual rotation speed of the heating roller (10); A target speed calculation unit, used for calculating a target speed of the heating roller (10); ;in, is the target rotation speed of the heating roller (10); is the actual conveying speed of the conveyor belt (4); is the slip rate of the rubber material on the conveyor belt (4); It is the ideal heating time of the rubber compound; It is the current actual rubber heating time; is the temperature uniformity adjustment coefficient; is the actual surface temperature of the heating roller (10); is the target temperature of the rubber compound; The adjustment and verification unit is used to verify whether the difference between the actual rotation speed of the heating roller (10) and the target rotation speed of the heating roller (10) is greater than a preset first adjustment threshold value; if it is greater than the first adjustment threshold value, the actual rotation speed of the heating roller (10) is adjusted to the target rotation speed of the heating roller (10); otherwise, the rotation speed of the heating roller (10) is not adjusted.

7. A rubber pretreatment device according to claim 4, characterized in that: The air supply control module includes: The air supply temperature control unit is used to adjust the air supply temperature of the hot air; The hot air flow control unit is used to adjust the hot air supply flow.

8. A rubber pretreatment device according to claim 7, characterized in that: The air supply temperature control unit includes: A first flow sensor, used for detecting the air intake flow of the hot air box (5); a fourth temperature sensor, used for detecting the air intake temperature of the hot air box (5); A power regulating subunit, used for periodically calculating the target power of the electric heating tube (6), and regulating the actual power of the electric heating tube (6) to the target power of the electric heating tube (6); ; Wherein, P is the target power of the electric heating tube (6); is the specific heat capacity of air; is the actual air intake flow rate of the current hot air box (5); is the standard operating temperature of the heating roller (10); is the thermal conductivity between the surface of the heating roller (10) and the surface of the rubber material; π is the circumference of a circle; is the radius of the outer surface of the heating roller (10); is the width of the heating roller (10); is the ratio of the contact area between the heating roller (10) and the rubber surface to the outer surface area of ​​the heating roller (10); is the initial temperature of the rubber compound; is the convection heat transfer coefficient between the outer wall of the heating drum (10) and the air; is the thermal conductivity between the hot air and the heating roller (10); is the radius of the inner cavity of the heating roller (10); is the width of the inner cavity of the heating roller (10); is the average air inlet temperature of the hot air box (5); is the thermal efficiency of the electric heating tube (6).

9. The rubber pretreatment device according to claim 7, characterized in that: The hot air flow control unit includes: A target flow calculation subunit, used to calculate a target value of the hot air supply flow; ;in, is the target value of the hot air supply flow rate; is the specific heat capacity of the rubber material; A is the projected area of ​​the heating area on the horizontal plane; H is the real-time accumulation height of the rubber material on the conveyor belt (4); is the target temperature of the rubber compound; is the initial temperature of the rubber compound; is the thermal conductivity between the surface of the heating roller (10) and the surface of the rubber material; π is the circumference of a circle; is the radius of the outer surface of the heating roller (10); is the width of the heating roller (10); is the ratio of the contact area between the heating roller (10) and the rubber surface to the outer surface area of ​​the heating roller (10); is the actual surface temperature of the heating roller (10); It is the current actual rubber heating time; When the hot air temperature is The total heat transferred from unit volume of hot air to the rubber material when is the current actual hot air temperature; The preset optimal hot air temperature; It is the total time that hot air has heating effect on rubber; is the proportion of hot air ejected from the air outlet; An adjustment judgment subunit is used to judge whether to adjust the air supply flow of hot air; ;in, is the flow adjustment value; is the target value of the hot air supply flow rate; is the actual air intake flow rate of the current hot air box (5); When the flow adjustment value is greater than the preset second adjustment threshold, the actual air supply flow of the hot air is adjusted to the target value of the air supply flow of the hot air, otherwise the actual air supply flow of the hot air is not adjusted.

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