Rubber belt mixing and calendering production system and process

Abstract

The invention relates to the technical field of rubber belt production and processing, and discloses a rubber belt mixing and calendaring production system which comprises a mixing unit and a calendaring unit, the mixing unit and the calendaring unit are sequentially distributed in the feeding direction, the mixing unit comprises a plurality of mixing rollers, the mixing rollers are used for mixing and processing rubber raw materials, and the calendaring unit comprises a plurality of calendaring rollers. The calendaring roller is used for calendaring the rubber raw material; a heating cavity is formed in the mixing roller and the calendering roller, one end of the heating cavity is connected with a heating medium input pipe, the heating medium input pipe comprises a hot end input pipe and a cold end input pipe, and the heating medium input pipe is used for mixing heating media in the hot end input pipe and the cold end input pipe and conveying the heating media into the heating cavity. The invention further discloses a rubber belt mixing and calendering production process which is suitable for the rubber belt mixing and calendering production system. The invention has the beneficial effects of stable temperature in the production process and good rubber processing effect.

Description

Technical Field

[0001] The invention relates to the technical field of rubber belt production and processing, and in particular to a rubber belt mixing and calendering production system and process. Background Art

[0002] Rubber belt is a composite product used to carry and transport materials in conveying devices. Rubber material is heat-resistant, high-temperature-resistant, burning-resistant, acid-resistant, cold-resistant, wear-resistant, oil-resistant, flame-retardant, tear-resistant, and puncture-resistant. Rubber belts are widely used in cement, coking, metallurgy, chemical, steel and other industries where the conveying distance is short and the conveying volume is small. It is widely used in the processing and production of conveyor belts. In the process of processing and producing rubber belts, the rubber raw materials need to be mixed and then calendered. In order to ensure that the rubber has good ductility during the mixing and calendering process, the rubber raw materials usually need to be heated.

[0003] For example, the patent document with the announcement number CN112440419A discloses a rubber raw material calendering device, including a base, a motor, a slide rail, a device box and a fan blade, a fixed plate is fixed on one side of the base, the motor is installed on the side of the fixed plate, a first hot pressing roller is fixed on the outside of the motor shaft, the side of the sleeve is connected to the first hot pressing roller through a clamping rod, a gear is sleeved on one end of the motor shaft, a second hot pressing roller is installed on the side of the first hot pressing roller, the device box is installed on the side of the second hot pressing roller, the upper end face of the device box is engraved with scale lines, and an adjustment rod is passed through the inside of the support plate. The device can automatically cut off the rubber raw material calendering device with scraps, and the calendering of rubber sheets of different thicknesses can be achieved by increasing the thickness of the hot pressing roller, which increases the convenience of adjustment, and the scraps of the rubber raw material can be cut off after it is pressed into sheets, reducing the repeated processing in the later stage.

[0004] Although the above technical scheme can realize the calendering process of hot pressing the rubber raw materials, when calendering the rubber, the roller and the rubber are usually heated by injecting a heating medium into the hot pressing roller. Due to the temperature control accuracy of the heating medium during heating and the temperature change of the heating medium caused by the heat loss of the transmission line, as well as the heat dissipation of the pressing roller, the temperature of the pressing roller is prone to fluctuate, resulting in the temperature of the pressing roller being too high or too low, which makes it easy for bubbles, surface roughness and other defects to appear in the rubber after mixing and calendering, thereby reducing the quality of the rubber belt. Summary of the invention

[0005] The present invention aims to provide a rubber belt mixing and calendering production system and process to solve the technical problem in the prior art that the temperature of the pressure roller is prone to fluctuate, thereby reducing the quality of the rubber belt.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rubber belt mixing and calendering production system, comprising a mixing unit and a calendering unit, the mixing unit and the calendering unit are distributed in sequence along the feeding direction, the mixing unit comprises a plurality of mixing rollers, the mixing rollers are used for mixing the rubber raw materials, the calendering unit comprises a plurality of calendering rollers, the calendering rollers are used for calendering the rubber raw materials; a heating chamber is provided in the mixing rollers and the calendering rollers, one end of the heating chamber is connected to a heating medium input pipe, the heating medium input pipe comprises a hot end input pipe and a cold end input pipe, the heating medium input pipe is used to collect the heating medium in the hot end input pipe and the cold end input pipe and transport the heating medium into the heating chamber.

[0007] The principle and advantage of this scheme are: when producing rubber belts, the rubber raw materials are sequentially transported to the mixing unit and the calendering unit for mixing and calendering; when the rubber raw materials are mixed and calendered, the heating medium is input into the mixing unit and the calendering unit through the heating medium input pipe, and when the heating medium is input into the mixing unit and the calendering unit, the temperature of the heating medium transported into the heating chamber is adjusted by mixing the heating medium transported by the hot end input pipe and the cold end input pipe.

[0008] In this solution, when the rubber is mixed and calendered, the temperature of the input heating medium is adjusted so that the temperature in the heating chamber can match the actual processing required temperature, thereby ensuring the quality of the rubber during mixing and calendering and reducing the flaws and defects in the rubber production process. At the same time, high-temperature heating medium and low-temperature heating medium are simultaneously transported to the heating chamber through the cold-end input pipe and the hot-end input pipe, so that in the actual heating process, the ratio of the two temperatures of the heating medium can be conveniently adjusted to achieve the adjustment of the temperature of the heating medium input to the heating chamber, thereby improving the convenience of controlling and adjusting the heating medium.

[0009] Preferably, as an improvement, one end of the hot-end input pipe and one end of the cold-end input pipe are connected to the heating chamber via a three-way valve, so that the hot-end input pipe and the cold-end input pipe are mixed at the input port of the heating chamber, so that the high-temperature heating medium transported by the hot-end input pipe and the low-temperature heating medium transported by the cold-end input pipe can be transported to the heating chamber as soon as possible after mixing, so as to avoid heat loss during the transportation of the mixed heating medium after a long distance transportation, resulting in temperature changes of the mixed heating medium, which affects the accuracy of the temperature control of the heating medium.

[0010] Preferably, as an improvement, it further includes a monitoring unit, which includes a first sensor and a second sensor, the first sensor is used to detect the temperature of the heating medium transported by the heating medium input pipe, and the second sensor is used to detect the temperature of the heating medium in the heating chamber.

[0011] Preferably, as an improvement, the monitoring unit further includes a third sensor, and the third sensor is used to detect the pressure in the heating chamber.

[0012] Preferably, as an improvement, it further includes a control unit, which is used to control the temperature of the heating medium input by the heating medium input pipe in the mixing unit and the calendering unit according to the temperature and pressure data monitored by the monitoring unit. By monitoring the input heating medium temperature and the temperature in the heating chamber, and adjusting the input heating medium temperature according to the monitoring result, it is ensured that the input temperature matches the actual situation, the accuracy of temperature control during the mixing and calendering process is improved, and the effect of rubber mixing and calendering processing is ensured. In addition, by monitoring the pressure in the heating chamber, it is avoided that when the pressure in the heating chamber is too high and the high-temperature heating medium is continuously input, leakage of the calendering roller and the mixing roller is caused, which increases the risk of equipment damage.

[0013] A rubber belt mixing and calendering production process comprises the following steps:

[0014] Step 1: transporting the rubber raw materials to the mixing unit for mixing processing;

[0015] Step 2: conveying the mixed rubber raw material to a calendering unit for calendering to form a rubber belt;

[0016] Step 3, conveying the rubber belt after calendering in step 2 to the next processing step for processing;

[0017] In step one and step two, when the rubber raw materials are mixed and calendered, the heating medium is input into the mixing unit and the calendering unit through the heating medium input pipe. When the heating medium is input into the mixing unit and the calendering unit, the monitoring unit monitors the heating medium at the input port of each mixing roller or calendering roller in the mixing unit and the calendering unit. The control unit adjusts the temperature of the heating medium transported by the heating medium input pipe according to the temperature monitoring data at the input port by the monitoring unit.

[0018] Preferably, as an improvement, when the control unit adjusts the temperature of the heating medium, it adjusts the ratio of the heating medium input by the hot end input pipe and the heating medium input by the cold end input pipe in the heating medium input pipe. By adjusting the ratio of high temperature and low temperature heating medium, the temperature of the input heating medium is controlled, so that the temperature adjustment of the heating medium can be completed quickly.

[0019] Preferably, as an improvement, in step 1 and step 2, the monitoring unit is also used to monitor the temperature in the heating chambers of the mixing unit and the calendering unit, and the control unit also adjusts the temperature of the heating medium input by the heating medium input pipe according to the monitoring of the temperature in the heating chamber by the monitoring unit. By monitoring the temperature in the heating chamber, the temperature of the input heating medium can be matched with the actual demand, ensuring the temperature stability of the calendering roller and the mixing roller during the processing, and reducing the temperature fluctuation during the processing.

[0020] Preferably, as an improvement, in step 1 and step 2, the monitoring unit is also used to monitor the pressure in the heating chambers of the mixing unit and the calendering unit, and the control unit is also used to adjust the temperature of the heating medium input by the heating medium input pipe according to the pressure monitoring of the heating chamber by the monitoring unit. This avoids inputting high-temperature heating medium when the pressure in the heating chamber is too high, causing the temperature and pressure inside the heating chamber to increase rapidly, increasing the risk of leakage and damage to the calendering roller and mixing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a rubber belt mixing and calendering production system in an embodiment of the present invention.

[0022] Figure 2 It is a flowchart of the rubber belt mixing and calendering production process in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The figure marks in the drawings of the specification include: mixing unit 1, feeding device 101, mixing device 102, mixing frame 103, mixing roller 104, calendering unit 2, conveyor belt 201, calender 202, calendering roller 203, heating medium input pipe 3, hot end input pipe 301, cold end input pipe 302, heating medium output pipe 4, three-way valve 5.

[0025] As attached Figure 1 As shown, a rubber belt mixing and calendering production system includes a mixing unit 1 and a calendering unit 2. The mixing unit 1 and the calendering unit 2 are distributed in sequence along the feeding direction. The mixing unit 1 is used for mixing the rubber raw materials, and the calendering unit 2 is used for calendering the raw materials mixed by the mixing unit 1.

[0026] The mixing unit 1 includes a feeding device 101 and a mixing device 102. The feeding device 101 is connected to the feeding port of the mixing device 102. The feeding device 101 is used to transport rubber raw materials to the mixing device 102. Preferably, in this embodiment, the feeding device 101 uses a crawler to transport the rubber raw materials. The specific content of transporting the rubber raw materials by crawlers is the prior art and will not be repeated here. The mixing device 102 includes a mixing frame 103. A mixing table is fixedly connected to the top of the mixing frame 103 by bolts. Two mixing rollers 104 are rotatably connected to the mixing table by a rotating shaft. The two mixing rollers 104 are distributed in parallel on the mixing table. Specifically, a roller support is provided on the mixing table. One end of the roller support is fixedly connected to the mixing table by bolts, and the other end extends upward along the height direction. The top of the roller support is connected to the mixing roller 104 by a rotating shaft. The rotating shaft at one end of the roller is connected to the output shaft of the motor through a transmission belt or a reducer. The motor is used to drive the mixing roller 104 to rotate. When in use, the rubber raw material is placed between the two mixing rollers 104 so that the rubber raw material is squeezed between the two mixing rollers 104 to complete the mixing process.

[0027] The calendering unit 2 includes a calender 202, the input port of the calender 202 is connected to the output port of the mixing device 102 by a conveyor belt 201, and the conveyor belt 201 is used to transport the rubber raw material mixed and processed by the mixing device 102 to the calender 202 for calendering. A plurality of calendering rollers 203 are rotatably connected in the calender 202 through a rotating shaft, the central axes of the plurality of calendering rollers 203 are parallel to each other, and the plurality of calendering rollers 203 are arranged in parallel along the height direction. Specifically, in this embodiment, the calender 202 is an I-type three-roller calender 202, and in other embodiments, other types of calenders 202 can also be selected to calender the rubber, wherein the specific structure of the calender 202 is the prior art and will not be described in detail here.

[0028] A heating chamber is provided in both the mixing roller 104 and the calendering roller 203, and a heating medium flows and fills the heating chamber. The heating medium is used to heat the mixing roller 104 or the calendering roller 203, so that the mixing roller 104 and the calendering roller 203 heat the rubber raw materials during the mixing and calendering process. An input port and an output port are provided on both the mixing roller 104 and the calendering roller 203, and the input port and the output port are respectively located at the two ends of the mixing roller 104 or the calendering roller 203; wherein one end of the input port is connected to the heating chamber, and the other end is connected to the heating medium input pipe 3, and the output port is located at the end of the mixing roller 104 or the calendering roller 203 away from the input port, and one end of the output port is connected to the heating chamber, and the other end is connected to the heating medium output pipe 4, and the heating medium is transported to the heating chamber through the heating medium input pipe 3, and the heating medium output pipe 4 is used to output the heating chamber, so that the heating medium in the heating chamber circulates. By opening a heating chamber in the mixing roller 104 and the calendering roller 203 and filling the heating chamber with a heating medium, the surfaces of the calendering roller 203 and the mixing roller 104 can be evenly heated while the heating medium is directly brought into contact with the side walls of the heating roller and the calendering roller 203 for heating, thereby improving the heat conduction efficiency during the heating process, reducing energy loss, and improving the utilization rate of thermal energy.

[0029] The heating medium input pipe 3 includes a hot end input pipe 301 and a cold end input pipe 302. One end of the hot end input pipe 301 and one end of the cold end input pipe 302 are connected to the input port through a three-way valve 5. The ends of the hot end input pipe 301 and the cold end input pipe 302 away from the input port are respectively connected to a heating device or a heating medium circulation pipe, wherein the hot end input pipe 301 is used to transport high-temperature heating medium into the heating chamber, and the cold end input pipe 302 is used to transport low-temperature heating medium into the heating chamber, wherein in this embodiment, the heating medium may be a heating liquid or heating oil. The high-temperature heating medium and the low-temperature heating medium are simultaneously transported into the heating chamber through the cold end input pipe 302 and the hot end input pipe 301, so that in the actual heating process, the ratio of the two temperatures of the heating medium can be conveniently adjusted to achieve the adjustment of the temperature of the heating medium input to the heating chamber, thereby improving the convenience of controlling and adjusting the heating medium.

[0030] It also includes a monitoring unit, which includes a first sensor and a second sensor, wherein the first sensor is located at one end of the heating medium input pipe 3 close to the input port, specifically in this embodiment, the first sensor is located between the three-way valve 5 and the input port, and the first sensor is used to detect the temperature of the heating medium transported by the heating medium input pipe 3. The second sensor is located in the heating chamber, and the second sensor is used to detect the temperature of the heating medium in the heating chamber. In the embodiment, the first sensor and the second sensor are both selected as temperature sensors of model E52-PRC-N, and other models of temperature sensors can also be selected to detect the temperature in other embodiments.

[0031] The monitoring unit also includes a third sensor, which is located in the heating chamber. The third sensor is used to detect the pressure in the heating chamber. The specific third sensor is a pressure sensor of model AP-V80. In other embodiments, other types of pressure sensors can also be used to detect the pressure in the heating chamber.

[0032] It also includes a control unit, which is electrically connected to the monitoring unit, the mixing unit 1 and the calendering unit 2. The control unit is used to control the opening and closing of the heating medium input pipe 3 and the heating medium output pipe 4 in the mixing unit 1 and the calendering unit 2 according to the temperature and pressure data monitored by the sensor in the monitoring unit, so as to achieve the balance of the temperature in the heating chamber. Wherein the control unit in this embodiment uses a single chip microcomputer of model STM32F205, and other models and types of processors can also be used for control in other embodiments. By monitoring the input heating medium temperature and the temperature in the heating chamber, and adjusting the temperature of the input heating medium according to the monitoring result, it is ensured that the input temperature matches the actual situation, the accuracy of temperature control in the mixing and calendering process is improved, the effect of rubber mixing and calendering processing is ensured, and by monitoring the pressure in the heating chamber, it is avoided that when the pressure in the heating chamber is too high and the high temperature heating medium is continuously input, the calendering roller 203 and the mixing roller 104 leak, and the risk of equipment damage is increased.

[0033] The present invention also intends to provide a rubber belt mixing and calendering production process, which is applicable to the above-mentioned rubber belt mixing and calendering production system, such as the attached Figure 2 As shown, the following steps are included:

[0034] Step 1: convey the rubber raw material to the mixing unit 1 for mixing processing; specifically, convey the rubber raw material to the two mixing rollers 104 of the mixing device 102 through the feeding device 101, and the rubber raw material is extruded in the mixing rollers 104 to complete the mixing processing. The specific content of mixing the rubber raw material is the existing technology and will not be repeated here.

[0035] Step 2: conveying the mixed rubber raw material to the calendering unit 2 for calendering to form a rubber belt; specifically, the mixed rubber raw material is conveyed to the calender 202 in the calendering unit 2 by the conveyor belt 201, and the rubber raw material is pressed by the calendering roller 203 in the calender 202 to obtain a rubber belt, wherein the specific content of calendering the rubber raw material by the calender 202 is the existing technology and will not be repeated here.

[0036] Step 3: conveying the rubber belt calendered in step 2 to the next processing step for processing.

[0037] In step 1 and step 2, when the rubber raw materials are mixed and calendered, the heating medium is input into the mixing unit 1 and the calendering unit 2 through the heating medium input pipe 3 to heat the rubber in the mixing and heating process. Specifically, the hot end input pipe 301 and the cold end input pipe 302 connected to the input port of the mixing roller 104 or the calendering roller 203 simultaneously transport the heating medium into the heating chamber in the mixing roller 104 or the calendering roller 203. After the heating medium is mixed with each other at the input port, it enters the heating chamber to heat the side wall of the mixing roller 104 or the calendering roller 203, thereby heating the rubber on the surface of the mixing roller 104 or the calendering roller 203. The heating medium that heats the mixing roller 104 or the calendering roller 203 in the heating chamber is output from the output port through the heating medium output port to the heating device or the circulation pipe. The output heating medium is reheated or input into the heating chamber again through the heating medium input pipe 3 through the circulation pipe for reuse.

[0038] When the heating medium is input into the mixing unit 1 and the calendering unit 2, the monitoring unit monitors the heating medium at the input ports of each mixing roller 104 or calendering roller 203 in the mixing unit 1 and the calendering unit 2. The control unit adjusts the ratio of the heating medium input into the hot end input pipe 301 and the cold end input pipe 302 in the heating medium input pipe 3 according to the temperature monitoring data at the input port by the monitoring unit. Specifically, when the temperature of the heating medium at the input port is too high, the size of each valve of the three-way valve 5 at the input port is adjusted to reduce the input amount of the hot end input pipe 301 and increase the input amount of the cold end input pipe 302; when the temperature of the heating medium at the input port is too low, the size of each valve in the three-way valve 5 at the input port is adjusted to increase the input amount of the hot end input pipe 301 and reduce the input amount of the cold end input pipe 302, so as to adjust the temperature of the heating medium input at the input port.

[0039] The control unit also adjusts the temperature of the heating medium input by the heating medium input pipe 3 according to the monitoring of the temperature in the heating chamber by the monitoring unit. Specifically, when the temperature in the heating chamber is lower than the preset value, the temperature of the heating medium input by the heating medium input pipe 3 is increased. When the temperature in the heating chamber is higher than the preset value, the temperature of the heating medium input by the heating medium input pipe 3 is reduced. When adjusting the temperature of the input heating medium, it is consistent with the content of adjusting the ratio of the cold end input pipe 302 and the hot end input pipe 301, and will not be repeated here.

[0040] The control unit is also used to adjust the temperature of the heating medium input by the heating medium input pipe 3 according to the pressure monitoring of the heating chamber by the monitoring unit. Specifically, when the pressure in the heating chamber is higher than the preset value, the temperature of the heating medium input by the heating medium input pipe 3 is reduced.

[0041] The above are only embodiments of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A rubber belt mixing and calendering production system, characterized in that: It includes a mixing unit and a calendering unit, which are distributed in sequence along the feeding direction. The mixing unit includes a plurality of mixing rollers, which are used to mix the rubber raw materials. The calendering unit includes a plurality of calendering rollers, which are used to calender the rubber raw materials. A heating chamber is provided in the mixing rollers and the calendering rollers, one end of the heating chamber is connected to a heating medium input pipe, the heating medium input pipe includes a hot end input pipe and a cold end input pipe, and the heating medium input pipe is used to collect the heating medium in the hot end input pipe and the cold end input pipe and transport the heating medium into the heating chamber.

2. A rubber belt mixing and calendering production system according to claim 1, characterized in that: One end of the hot end input pipe and one end of the cold end input pipe are connected to the heating chamber through a three-way valve. The hot end input pipe is used to transport high-temperature heating medium into the heating chamber, and the cold end input pipe is used to transport low-temperature heating medium into the heating chamber.

3. A rubber belt mixing and calendering production system according to claim 1, characterized in that: It also includes a monitoring unit, which includes a first sensor and a second sensor. The first sensor is used to detect the temperature of the heating medium transported by the heating medium input pipe, and the second sensor is used to detect the temperature of the heating medium in the heating chamber.

4. A rubber belt mixing and calendering production system according to claim 3, characterized in that: The monitoring unit further includes a third sensor, and the third sensor is used to detect the pressure in the heating chamber.

5. A rubber belt mixing and calendering production system according to claim 4, characterized in that: It also includes a control unit, which is used to control the temperature of the heating medium input through the heating medium input pipes in the mixing unit and the calendering unit according to the temperature and pressure data monitored by the monitoring unit.

6. A rubber belt mixing and calendering production process, applicable to a rubber belt mixing and calendering production system as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: transporting the rubber raw materials to the mixing unit for mixing processing; Step 2: conveying the mixed rubber raw material to a calendering unit for calendering to form a rubber belt; Step 3, conveying the rubber belt after calendering in step 2 to the next processing step for processing; In step one and step two, when the rubber raw materials are mixed and calendered, the heating medium is input into the mixing unit and the calendering unit through the heating medium input pipe. When the heating medium is input into the mixing unit and the calendering unit, the monitoring unit monitors the heating medium at the input port of each mixing roller or calendering roller in the mixing unit and the calendering unit. The control unit adjusts the temperature of the heating medium transported by the heating medium input pipe according to the temperature monitoring data at the input port by the monitoring unit.

7. A rubber belt mixing and calendering production process according to claim 6, characterized in that: When the control unit adjusts the temperature of the heating medium, the ratio of the heating medium input into the hot end input pipe and the heating medium input into the cold end input pipe in the heating medium input pipe is adjusted.

8. The rubber belt mixing and calendering production process according to claim 6, characterized in that: In step one and step two, the monitoring unit is also used to monitor the temperature in the heating chambers of the mixing unit and the calendering unit, and the control unit also adjusts the temperature of the heating medium input by the heating medium input pipe according to the monitoring of the temperature in the heating chamber by the monitoring unit.

9. A rubber belt mixing and calendering production process according to claim 6, characterized in that: In step one and step two, the monitoring unit is also used to monitor the pressure in the heating chambers of the mixing unit and the calendering unit, and the control unit is also used to adjust the temperature of the heating medium input by the heating medium input pipe according to the pressure monitoring of the heating chamber by the monitoring unit.

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