Process sizing material pretreatment scheme and control device thereof

Abstract

The invention provides a process sizing material pretreatment scheme and a control device thereof, and relates to the field of sizing material heating pretreatment, and the process sizing material pretreatment scheme comprises the following steps: uniformly mixing to-be-treated sizing material raw materials according to a certain proportion to ensure the uniformity of the raw materials; the preparation method comprises the following steps: mixing various raw materials in an open mill, and heating and shearing to enable a rubber material to reach a certain plasticized state; the sizing material runs along the feeding conveying belt, and then the temperature of the sizing material is effectively adjusted through the control device; in the preparation process of the rubber material, the rubber material is monitored and adjusted in real time through a quality detection instrument and method, and after preparation is completed, the rubber material is used for subsequent forming and vulcanization procedures. A process sizing material pretreatment control device is arranged. Therefore, the problems that in the prior art, the quality stability of products and the process operation control of subsequent procedures are affected due to the fact that the quality problem exists in half-part extrusion caused by poor thermal plastication of an open mill on raw sheet rubber in production are effectively solved.

Description

Technical Field

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

[0002] Process rubber is a relatively broad concept in the field of rubber processing. It usually refers to the rubber that has undergone a series of pretreatment and processing steps in the production process of rubber products to reach a specific state and is ready for subsequent molding, vulcanization and other processes. This process covers multiple links from raw material preparation, mixing, plasticization, fine mixing to quality control.

[0003] In the production process of rubber products, the pretreatment of rubber is a crucial link. The existing technology directly uses an open mill to process the rubber, and there is no pretreatment device. In the production, the open mill has poor thermal plasticization of the original rubber sheet, which leads to quality problems in the extrusion of semi-components, affecting the product quality stability and the process operation control of the subsequent process. Therefore, in view of the above situation, it is urgent to develop a process rubber pretreatment scheme and its control device to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The present invention provides a process rubber material pretreatment scheme and a control device thereof, which are used to solve the technical problem that the prior art directly uses an open mixing mill to process the rubber material without a pretreatment device, and the open mixing mill has poor thermal plasticizing of the original sheet rubber during production, resulting in quality problems in the extrusion of semi-components, affecting the stability of product quality and the process operation control of subsequent processes.

[0005] In order to solve the above technical problems, the present invention discloses a process rubber pretreatment scheme, comprising: Step 1: Raw material preparation, mix the rubber raw materials to be processed in a certain proportion to ensure the uniformity of the raw materials; Step 2: Mixing and plasticizing: In an open mixer, various raw materials are mixed and the rubber is brought into a certain plasticized state by heating and shearing; Step 3: Temperature control, the rubber material is run along the feeding conveyor belt, and then the temperature of the rubber material is effectively adjusted through the control device; Step 4: Quality control. During the preparation of the process rubber, the viscosity, density and hardness of the rubber are monitored and adjusted in real time through quality inspection instruments and methods. After the process rubber is prepared, it will be used in subsequent molding and vulcanization processes.

[0006] A process rubber pretreatment control device comprises: a workbench, legs are fixedly installed on the periphery of the workbench, the top of the legs are connected to a feeding conveyor belt, two temperature detection probes are fixedly installed on the top right side of the feeding conveyor belt, a circulating water temperature control mechanism is arranged on the top of the workbench, and a heating roller mechanism is arranged on the top of the feeding conveyor belt.

[0007] Preferably, the circulating water temperature control mechanism comprises: A regulating box, wherein the regulating box is fixedly mounted on a workbench, and a water pump is fixedly mounted on the workbench at the right end of the regulating box, the output end of the water pump is connected to one end of the heating wire tube, the other end of the heating wire tube is connected to the circulating heating water inlet pipe, the input end of the water pump is connected to the heating circulating water outlet pipe, and the heating wire tube is installed in the regulating box, and a temperature detection probe is fixedly mounted on the inner wall of the regulating box.

[0008] Preferably, the heating roller mechanism includes: a heating roller, both ends of the heating roller are rotatably connected to a support plate, and the support plate is fixedly mounted on the front and rear ends of the feeding conveyor belt, and the front end of the heating roller is connected to a heating circulating water outlet pipe via a second rotary joint, and the rear end of the heating roller is connected to a circulating heating water inlet pipe via a first rotary joint, and a gear is fixedly mounted on the rear end heating roller, the gear is meshedly connected to the output end of a servo motor, and the fixed end of the servo motor is fixedly mounted on the support plate at the rear end.

[0009] Preferably, a plurality of heating circulating water channels are arranged inside the heating roller, one end of the plurality of heating circulating water channels is connected to a circulating heating water inlet pipe, and the other end of the plurality of heating circulating water channels is connected to a heating circulating water outlet pipe.

[0010] Preferably, the process rubber pretreatment control device further includes: a PLC system, and the PLC system is electrically connected to the temperature detection probe 1, the temperature detection probe 2 and the servo motor.

[0011] Preferably, in the process rubber pretreatment control device, the heating wire tube further comprises: Temperature sensor 1, used to detect the temperature of the heating wire tube when it starts to heat; Temperature sensor 2, used to detect the real-time heating temperature of the heating wire tube; A controller and an alarm, wherein the controller is electrically connected to the temperature sensor 1, the temperature sensor 2 and the alarm, and the controller controls the alarm to work based on the temperature sensor 1 and the temperature sensor 2.

[0012] Preferably, the process rubber pretreatment control device comprises the following steps: Step 1: According to formula (1), calculate the effective value of the induced current of the heating wire tube

[0013] (1); in is the equivalent number of turns of the heating wire tube, is the magnetic flux generated when an alternating current flows through the coil. is the impedance of the heating wire tube, is the resistivity of the heating wire tube, is the vacuum magnetic permeability of the heating wire tube, is the radius of the heating wire tube, is the relative magnetic permeability of the heating wire tube, The value is 3.14; Step 2: Calculate the heat generated by the actual flow through the heating wire tube after a period of time t according to the following formula (2) and the detection values ​​of temperature sensor 1 and temperature sensor 2. The controller compares the actual heat generated by the flow through the heating wire tube after a period of time t When the heat generated by the actual flow through the heating wire tube exceeds the preset heat range after a period of time t, the controller controls the alarm to sound

[0014] (2); in is the resistance of the heating wire tube, is the unit time, is the detection value of the temperature sensor, is the detection value of temperature sensor 2, is the ambient temperature. 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 A flow chart of a process rubber pretreatment solution provided by an embodiment of the present invention; Figure 2 A front view of a process rubber pretreatment control device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure of a heating roller provided in an embodiment of the present invention; Figure 4 A cross-sectional view of the internal structure of the regulating box provided by an embodiment of the present invention; Figure 5 A schematic diagram of the substructure of a process rubber pretreatment control device provided in an embodiment of the present invention.

[0017] Reference numerals: 1. Rotary joint 1; 2. Circulating heating water inlet pipe; 3. Support legs; 4. Heating circulating water channel; 5. Support plate; 6. Heating circulating water outlet pipe; 7. Workbench; 8. Temperature detection probe 1; 9. Heating wire tube; 10. Gear; 11. Rotary joint 2; 12. Temperature detection probe 2; 13. Water pump; 14. Adjustment box; 15. Servo motor; 16. Feed conveyor belt; 17. Heating roller. 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] The present invention provides the following embodiments Example 1 The embodiment of the present invention provides a process rubber pretreatment solution, such as Figure 1 As shown, including: Step 1: Raw material preparation, mix the rubber raw materials to be processed in a certain proportion to ensure the uniformity of the raw materials; Step 2: Mixing and plasticizing: In an open mixer, various raw materials are mixed and the rubber is brought into a certain plasticized state by heating and shearing; Step 3: Temperature control, the rubber material is run along the feeding conveyor belt, and then the temperature of the rubber material is effectively adjusted through the control device; Step 4: Quality control. During the preparation of the process rubber, the viscosity, density and hardness of the rubber are monitored and adjusted in real time through quality inspection instruments and methods. After the process rubber is prepared, it will be used in subsequent molding and vulcanization processes.

[0021] The beneficial effect of the above technical solution is that the present invention sets a process rubber material pretreatment control device, thereby effectively improving the technical problem raised in the background technology that the prior art directly uses an open mill to treat the rubber material without a pretreatment device, and the open mill has poor hot plasticizing of the original sheet rubber in production, resulting in quality problems in the extrusion of semi-components, affecting the product quality stability and the process operation control of the subsequent process.

[0022] Example 2 On the basis of Example 1, Figure 2-5 As shown, a process rubber pretreatment control device includes: a workbench 7, a support leg 3 is fixedly installed on the periphery of the workbench 7, the top of the support leg 3 is connected to the feeding conveyor belt 16, a temperature detection probe 12 is fixedly installed on the top right side of the feeding conveyor belt 16, and a circulating water temperature control mechanism is provided on the top of the workbench 7, and a heating roller mechanism is provided on the top of the feeding conveyor belt 16.

[0023] Optionally, the circulating water temperature control mechanism includes: The regulating box 14 is fixedly mounted on the workbench 7, and a water pump 13 is fixedly mounted on the workbench 7 at the right end of the regulating box 14, the output end of the water pump 13 is connected to one end of the heating wire tube 9, the other end of the heating wire tube 9 is connected to the circulating heating water inlet pipe 2, the input end of the water pump 13 is connected to the heating circulating water outlet pipe 6, and the heating wire tube 9 is installed in the regulating box 14, and a temperature detection probe 8 is fixedly mounted on the inner wall of the regulating box 14.

[0024] Optionally, the heating roller mechanism includes: a heating roller 17, both ends of which are rotatably connected to a support plate 5, and the support plate 5 is fixedly mounted at the front and rear ends of a feeding conveyor belt 16, and the front end of the heating roller 17 is connected to a heating circulating water outlet pipe 6 via a rotary joint 11, and the rear end of the heating roller 17 is connected to a circulating heating water inlet pipe 2 via a rotary joint 1, and a gear 10 is fixedly mounted on the rear end heating roller 17, and the gear 10 is meshedly connected to the output end of a servo motor 15, and the fixed end of the servo motor 15 is fixedly mounted on the support plate 5 at the rear end.

[0025] Optionally, a plurality of heating circulating water channels 4 are provided inside the heating roller 17 , one end of the plurality of heating circulating water channels 4 is connected to the circulating heating water inlet pipe 2 , and the other end of the plurality of heating circulating water channels 4 is connected to the heating circulating water outlet pipe 6 .

[0026] Optionally, the process rubber pretreatment control device further includes: a PLC system, and the PLC system is electrically connected to the temperature detection probe 1 8, the temperature detection probe 2 12 and the servo motor 15.

[0027] The working principle of the above technical solution is as follows: the temperature detection probe 8 detects the temperature of the circulating water in the regulating box 14, and transmits the transmission signal to the PLC system. The PLC system receives the signal and determines whether it is within the standard requirement range. If it is higher than the standard requirement range, the PLC system transmits a signal to the heating wire tube 9 to control the heating wire tube 9 to stop running, and relies on external heat exchange to cool down the circulating heating water. If it is lower than the standard requirement range, the PLC system transmits a signal to the heating wire tube 9 to control the heating wire tube 9 to operate and heat the circulating water, so as to maintain the temperature of the heating circulating water in the regulating box 14 within the standard requirement range. The heating circulating water relies on the water pump 13 to provide power, runs along the circulating heating water inlet pipe 2, and finally reaches the several heating circulating water channels 4 in the heating roller 17, and is finally connected to the input end of the water pump 13 through the heating circulating water outlet pipe 6. The two ends of the heating roller 17 are respectively rotating joints. Head 1 and rotary joint 2 11, heating roller 17 relies on servo motor 15 to provide power, and rotates by gear 10, realizing the rotation process of heating roller 17, temperature detection probe 2 12 detects the temperature of rubber material, and the detected temperature is transmitted to PLC system as input signal to judge whether it is within the standard requirement range, if it is lower than the standard requirement range, then PLC system transmits signal to servo motor controller driving heating roller 17 to rotate, controller controls servo motor 15 to increase speed, controls the running speed of heating roller 17 to increase, increases the heating effect on rubber material, thereby achieving the effect of raising rubber material temperature, when the detected temperature is higher than the standard requirement range, then PLC system transmits signal to servo motor controller driving heating roller 17 to rotate, controller controls servo motor 15 to reduce speed, controls the running speed of heating roller 17 to weaken, reduces the heating effect on rubber material, thereby achieving the effect of lowering rubber material temperature.

[0028] The beneficial effects of the above technical solution are: 1. Carry out pre-treatment heating process on the rubber material to improve the subsequent processing performance and smooth processing ability of the rubber material in the open mixing mill, and ensure the stability and reliability of the subsequent open mixing mill in plasticizing the rubber material; 2. It can be selected and optimized according to the actual situation to achieve the best processing effect; 3. Feedback adjustment closed-loop control, continuous adjustment until the preheating temperature of the extruded rubber material reaches the standard requirement range, ensuring continuous and stable production; 4. The rubber preheating temperature adjustment process is realized, the control process is accurate, and the adjustment speed is fast, which improves the stability of the extrusion size of the extrudate and is conducive to improving the stability of the product; 5. Innovatively carry out the rubber preheating process to prevent product quality problems caused by insufficient heating and plasticizing capacity of the mixing mill in the subsequent production process.

[0029] Example 3 On the basis of the embodiment 1-2, in the process rubber pretreatment control device, the heating wire tube 9 further comprises: Temperature sensor 1, used to detect the temperature of the heating wire tube 9 when it starts to heat; Temperature sensor 2, used to detect the real-time heating temperature of the heating wire tube 9; A controller and an alarm, wherein the controller is electrically connected to the temperature sensor 1, the temperature sensor 2 and the alarm, and the controller controls the alarm to work based on the temperature sensor 1 and the temperature sensor 2.

[0030] Optionally, the process rubber pretreatment control device comprises the following steps: Step 1: According to formula (1), calculate the effective value of the induced current of the heating wire tube 9

[0031] (1); in is the equivalent number of turns of the heating wire tube 9, is the magnetic flux generated when an alternating current flows through the coil. is the impedance of the heating wire tube 9, is the resistivity of the heating wire tube 9, is the vacuum magnetic permeability of the heating wire tube 9, is the radius of the heating wire tube 9, is the relative magnetic permeability of the heating wire tube 9, The value is 3.14; Step 2: According to the following formula (2), the detection values ​​of temperature sensor 1 and temperature sensor 2, calculate the actual heat generated after the flow passes through the heating wire tube 9 for a period of time t The controller compares the actual heat generated by the flow through the heating wire tube 9 after a period of time t When the heat generated by the actual flow of the heating wire tube 9 exceeds the preset heat range after a period of time t, the controller controls the alarm to sound an alarm.

[0032] (2); in is the resistance of the heating wire tube 9, is the unit time, is the detection value of the temperature sensor, is the detection value of temperature sensor 2, is the ambient temperature.

[0033] The beneficial effects of the above technical solution are as follows: the controller calculates the effective value of the induced current of the heating wire tube 9 based on the formula (1), and comprehensively considers the equivalent number of turns of the heating wire tube 9, the magnetic flux generated when the alternating current is passed through the coil, the impedance of the heating wire tube 9, the resistivity of the heating wire tube 9, the vacuum magnetic permeability of the heating wire tube 9, the radius of the heating wire tube 9, and the relative magnetic permeability of the heating wire tube 9, so that the calculation result is more accurate and reliable; Then, according to formula (2), the detection values ​​of temperature sensor 1 and temperature sensor 2, the resistance of heating wire tube 9, unit time, and ambient temperature, the heat generated after the water actually flows through heating wire tube 9 for a period of time t is calculated, so that the calculation result is more accurate and reliable.

[0034] The controller controls the detection values ​​of the temperature sensor 1 and the temperature sensor 2 and controls the operation of the alarm. The controller compares the actual heat generated after flowing through the heating wire tube 9 for a period of time t with the preset heat range. When the actual heat generated after flowing through the heating wire tube 9 for a period of time t exceeds the preset heat range, the controller controls the alarm to sound an alarm, thereby reminding the staff to check the heating wire tube 9 in time to check whether it is damaged and replace it in time, thereby meeting the user's needs for this type of process rubber pretreatment control device.

[0035] 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 process rubber pretreatment scheme, characterized in that: include: Step 1: Raw material preparation, mix the rubber raw materials to be processed in a certain proportion to ensure the uniformity of the raw materials; Step 2: Mixing and plasticizing: In an open mixer, various raw materials are mixed and the rubber is brought into a certain plasticized state by heating and shearing; Step 3: Temperature control, the rubber material is run along the feeding conveyor belt, and then the temperature of the rubber material is effectively adjusted through the control device; Step 4: Quality control. During the preparation of the process rubber, the viscosity, density and hardness of the rubber are monitored and adjusted in real time through quality inspection instruments and methods. After the process rubber is prepared, it will be used in subsequent molding and vulcanization processes.

2. A process rubber pretreatment control device, used for processing a process rubber pretreatment solution as claimed in any one of claims 1, characterized in that: include: A workbench (7), wherein a support leg (3) is fixedly mounted on the periphery of the workbench (7), the top end of the support leg (3) is connected to a feed conveyor belt (16), a second temperature detection probe (12) is fixedly mounted on the top right side of the feed conveyor belt (16), a circulating water temperature control mechanism is arranged at the top end of the workbench (7), and a heating roller mechanism is arranged at the top end of the feed conveyor belt (16).

3. A process rubber pretreatment control device according to claim 2, characterized in that: The circulating water temperature control mechanism comprises: A regulating box (14), the regulating box (14) is fixedly mounted on a workbench (7), and a water pump (13) is fixedly mounted on the workbench (7) at the right end of the regulating box (14), the output end of the water pump (13) is connected to one end of the heating wire tube (9), the other end of the heating wire tube (9) is connected to a circulating heating water inlet pipe (2), the input end of the water pump (13) is connected to a heating circulating water outlet pipe (6), and the heating wire tube (9) is installed in the regulating box (14), and a temperature detection probe (8) is fixedly mounted on the inner wall of the regulating box (14).

4. A process rubber pretreatment control device according to claim 2, characterized in that: The heating roller mechanism comprises: a heating roller (17), the two ends of the heating roller (17) being rotatably connected to a support plate (5), and the support plate (5) being fixedly mounted at the front and rear ends of a feeding conveyor belt (16), and the front end of the heating roller (17) being connected to a heating circulating water outlet pipe (6) via a second rotating joint (11), and the rear end of the heating roller (17) being connected to a circulating heating water inlet pipe (2) via a first rotating joint (1), and a gear (10) being fixedly mounted on the rear end heating roller (17), the gear (10) being meshingly connected to an output end of a servo motor (15), and the fixed end of the servo motor (15) being fixedly mounted on the rear end support plate (5).

5. A process rubber pretreatment control device according to claim 4, characterized in that: A plurality of heating circulating water channels (4) are arranged inside the heating roller (17); one end of the plurality of heating circulating water channels (4) is connected to a circulating heating water inlet pipe (2); and the other end of the plurality of heating circulating water channels (4) is connected to a heating circulating water outlet pipe (6).

6. A process rubber pretreatment control device according to claim 2, characterized in that: Also includes: A PLC system, wherein the PLC system is electrically connected to a temperature detection probe 1 (8), a temperature detection probe 2 (12) and a servo motor (15).

7. A process rubber pretreatment control device according to claim 3, characterized in that: The heating wire tube (9) further comprises: Temperature sensor 1, used to detect the temperature of the heating wire tube (9) when it starts to heat; Temperature sensor 2, used for detecting the real-time heating temperature of the heating wire tube (9); A controller and an alarm, wherein the controller is electrically connected to the temperature sensor 1, the temperature sensor 2 and the alarm, and the controller controls the alarm to work based on the temperature sensor 1 and the temperature sensor 2.

8. A process rubber pretreatment control device according to claim 7, characterized in that: The following steps are involved: Step 1: According to formula (1), calculate the effective value of the induced current of the heating wire tube (9): （1）； in is the equivalent number of turns of the heating wire tube (9), is the magnetic flux generated when an alternating current flows through the coil. is the impedance of the heating wire tube (9), is the resistivity of the heating wire tube (9), is the vacuum magnetic permeability of the heating wire tube (9), is the radius of the heating wire tube (9), is the relative magnetic permeability of the heating wire tube (9), The value is 3.14; Step 2: According to the following formula (2), the detection values ​​of temperature sensor 1 and temperature sensor 2, calculate the heat generated after the water actually flows through the heating wire tube (9) for a period of time t The controller compares the actual heat generated by the flow through the heating wire tube (9) after a period of time t When the heat generated by the water flowing through the heating wire tube (9) exceeds the preset heat range after a period of time t, the controller controls the alarm to sound an alarm. （2）； in is the resistance of the heating wire tube (9), is the unit time, is the detection value of the temperature sensor, is the detection value of temperature sensor 2, is the ambient temperature.

Images