Pretreatment control device for sizing material

Abstract

The invention relates to a rubber material pretreatment control device, which solves the problems that the quality of extruded half parts is poor, the product quality stability is influenced and the subsequent process operation is not easy to control due to poor thermoplastic plastication of an extruder on raw sheet rubber in the production, and is provided with a bracket, a PLC (Programmable Logic Controller) control system, a first temperature detection probe and a temperature control system, the temperature control system is provided with a circulating water temperature control device, an electromagnetic valve, a heating roller and a power system, the PLC control system, the first temperature detection probe, the circulating water temperature control device and the heating roller are installed on the support, the electromagnetic valve is installed on the heating roller, and the power system is connected with the heating roller. The PLC control system is electrically connected with the first temperature detection probe, the electromagnetic valve and the circulating water temperature control device, and the circulating water temperature control device is connected with the heating roller. The device is used in the field of sizing material heating pretreatment.

Description

Technical Field

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

[0002] During the rubber processing and molding process, the rubber (raw rubber) is originally in a highly elastic state. The feeding mechanism transports the rubber into the barrel, and the screw shears, heats, and plasticizes the rubber. The heating system of the extruder barrel keeps it at a certain temperature, and as the screw rotates, it gradually transforms into a molten state. In the prior art, the rubber is usually directly processed by an extruder without a pretreatment device. In production, the extruder often fails to perform well in the thermal plasticization of the raw rubber sheet, resulting in poor quality of the extruded semi-components, affecting the stability of product quality, and causing problems that are difficult to control in subsequent processes.

[0003] China Patents has disclosed a patent numbered CN200910260551.0, and the patent name is "Heating device for recycled plastic extruder". In this patent, the heating method is to wrap a thermal oil tank on the barrel of the extruder, use an electric heating coil to heat the thermal oil, and then heat the extruder. This method of heating the thermal oil through an electric heating coil and then heating the extruder is to heat the extruder while it is working. Without pretreatment, the temperature cannot be accurately controlled. Summary of the invention

[0004] The present invention aims to solve the technical problems in the prior art that the extruder performs poor plastic refining of the original rubber sheet during production, resulting in poor quality of extruded semi-components, affecting product quality stability and making subsequent process operations difficult to control. The present invention provides a rubber pretreatment control device that can accurately control temperature, has a fast adjustment speed and is conducive to improving product stability.

[0005] To achieve the above purpose, the present invention is implemented through the above technical scheme: a bracket, a PLC control system, a first temperature detection probe and a temperature control system are provided, the temperature control system is provided with a circulating water temperature control device, an electromagnetic valve, a heating roller and a power system, the PLC control system, the first temperature detection probe, the circulating water temperature control device and the heating roller are installed on the bracket, the electromagnetic valve is installed on the heating roller, the power system is connected to the heating roller, the PLC control system is electrically connected to the first temperature detection probe, the electromagnetic valve and the circulating water temperature control device, and the circulating water temperature control device is connected to the heating roller; The heating roller is provided with a cylinder, a rotary joint, a circulating heating water inlet, a circulating water channel and a circulating heating water outlet. The cylinder is a cylinder, and rotary joints are installed at both ends of the cylinder. A circulating heating water inlet is opened at the front end of the cylinder, a circulating heating water outlet is opened at the rear end of the cylinder, and a circulating water channel is opened inside the cylinder; The circulating water temperature control device is provided with a shell, a second temperature detection probe, a heating wire tube and a water pump. The shell is a cylinder. A water outlet and a water return port are also provided in the middle of the upper side of the circulating water temperature control device. The heating wire tube is fixed inside the shell. The second temperature detection probe is installed inside the side of the shell and is located above the heating wire tube. The second temperature detection probe is used to detect the temperature of the internal circulating water. The water outlet is connected to the circulating heating water inlet through a hose, and the water return port is connected to the circulating heating water outlet through a hose. A water pump is also installed on the outside of the shell, and the water pump is used to provide power for the internal circulating water.

[0006] Preferably, a plurality of circulating water channels are provided in the heating roller, the circulating water channels are located close to the inner wall of the cylinder, and the circulating water channels are connected with the circulating heating water inlet and the circulating heating water outlet.

[0007] Preferably, the bracket is a double-layer bracket, provided with four legs, a conveyor belt and a support plate, the two legs on the left are longer than the two legs on the right, the support plate is horizontally installed on the legs, and the height is half of the right leg, and the conveyor belt is obliquely installed at the top of the four legs; a "door"-shaped frame is also provided on the left side of the conveyor belt, and the first temperature detection probe is installed in the middle of the "door"-shaped frame.

[0008] Preferably, a support base matching the housing of the circulating water temperature control device is fixed on the support plate, and a support block for supporting a water pump is also fixed on the left side of the support base.

[0009] Preferably, three pairs of support plates are fixed on both sides of the conveyor belt, a circular hole is opened in the middle of the support plate, the heating roller is rotatably connected in the circular hole of the support plate, the hose connected to the water outlet passes through the circular hole of the front support plate and is inserted into the circulating heating water inlet, the rotary joint matches the circular hole of the support plate, the rotary joint is rotatably connected to the support plate, and the hose connected to the return water outlet passes through the circular hole of the rear support plate and is inserted into the circulating heating water outlet.

[0010] Preferably, the conveyor belt is provided with a crawler, two rotating shafts and two side plates. The two rotating shafts are connected by the crawler, and the rotating shaft drives the crawler transmission. Two side plates are installed on the sides of the crawler and between the two rotating shafts, and the support plate is installed on the side plates.

[0011] Preferably, the PLC control system is provided with a temperature control module, a temperature detection module, a first output module and a second output module. The temperature detection module is connected to the first temperature detection probe, the first output module is connected to the electromagnetic valve, the temperature control module is connected to the second temperature detection probe, and the second output module is connected to the heating wire tube.

[0012] Preferably, the PLC control system is further provided with a progressive signal sending module and a feedback signal receiving module, the progressive signal sending module is used to control the electromagnetic valves to open one by one, and the feedback signal receiving module is used to receive feedback signals from the electromagnetic valves.

[0013] Preferably, the power system is provided with a motor and a pinion, a large gear is installed on the front side of the heating roller, the motor is installed on the support plate, the small gear is installed on the motor, and the small gear is meshed and connected with the large gear.

[0014] Preferably, a first connecting block is installed outside the water outlet of the circulating water temperature control device, and four openings are provided on the first connecting block, one of which is connected to the water outlet, and the other three openings are connected to the hose; a second connecting block is installed outside the return water port, and four openings are provided on the second connecting block, one of which is connected to the return water port, and the other three openings are connected to the hose.

[0015] The beneficial effects of the present invention are: (1) The present invention sets a pretreatment control device before the extruder, realizes the rubber material preheating temperature adjustment process, the control process is accurate, and the adjustment speed is fast, which improves the stability of the basic size of the extrudate and is conducive to improving the product stability; Before the rubber material enters the extruder, it is first heated by the pre-treatment control device to optimize the subsequent extruder's processing performance and smooth processing ability of the rubber material, ensuring the stability and reliability of the subsequent extruder's plasticization of the rubber material; (2) The present invention adopts a PLC control system to determine whether the temperature of the rubber material is within the standard requirement range according to the temperature signal transmitted by the first temperature detection probe, thereby controlling the electromagnetic valves to open or close one by one, increasing or decreasing the number of heating rollers, and ensuring that the rubber material is at a suitable temperature; The PLC control system will also determine whether the temperature of the internal circulation water is within the standard requirement range based on the temperature signal of the internal circulation water transmitted by the second temperature detection probe, thereby controlling the operation or stop of the heating wire tube to ensure that the internal circulation water is at an appropriate temperature and save energy consumption; The present invention adopts feedback regulation closed-loop control and continuously adjusts until the preheating temperature of the base rubber material reaches the standard requirement range, thereby ensuring continuous and stable production; the temperature regulation of the present invention can be selected and optimized according to actual conditions to achieve the best processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Main view structure diagram Figure 3 It is a schematic diagram of the mechanism of the temperature control system; Figure 4 for Figure 3 The structural diagram of the main view; Figure 5 for Figure 3 A schematic diagram of the mechanism from bottom view; Figure 6 for Figure 3 A schematic diagram of the mechanism from top view; Figure 7 It is a schematic diagram of the structure of the circulating water temperature control device; Figure 8 It is a schematic diagram of the structure of the heating roller; Fig. 9 for Figure 8 AA direction profile.

[0017] In the figure: 1. Rotary joint; 2. Circulating heating water inlet; 3. Circulating water channel; 4. Circulating heating water outlet; 5. Second temperature detection probe; 6. Heating wire tube; 7. Water outlet; 8. First temperature detection probe; 9. Solenoid valve; 10. Return water outlet; 11. Water pump; 12. Circulating water temperature control device; 13. Heating roller; 14. Motor; 15. Small gear; 16. Large gear. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1 like Figures 1 to 5 As shown, a pretreatment control device for rubber provided by the present invention is provided with a bracket, a PLC control system, a first temperature detection probe 8 and a temperature control system. The temperature control system is provided with a circulating water temperature control device 12, an electromagnetic valve 9, a heating roller 13 and a power system. The PLC control system, the first temperature detection probe 8, the circulating water temperature control device 12 and the heating roller 13 are installed on the bracket, the electromagnetic valve 9 is installed on the heating roller 13, the power system is connected to the heating roller 13, the PLC control system is electrically connected to the first temperature detection probe 8, the electromagnetic valve 9 and the circulating water temperature control device 12, and the circulating water temperature control device 12 is connected to the heating roller 13; the PLC control system is provided with a temperature control module, a temperature detection module, a first output module and a second output module, the temperature detection module is connected to the first temperature detection probe 8, the first output module is connected to the electromagnetic valve 9, the temperature control module is connected to the second temperature detection probe 5, and the second output module is connected to the heating wire tube 6. The PLC control system is also provided with a progressive signal sending module and a feedback signal receiving module. The progressive signal sending module is used to control the electromagnetic valves 9 to open one by one, and the feedback signal receiving module is used to receive the feedback signal of the electromagnetic valves 9.

[0020] The heating roller 13 is provided with a cylinder, a rotary joint 1, a circulating heating water inlet 2, a circulating water channel 3 and a circulating heating water outlet 4. The cylinder is a cylinder, and rotary joints 1 are installed at both ends of the cylinder. The front end of the cylinder is provided with a circulating heating water inlet 2, the rear end of the cylinder is provided with a circulating heating water outlet 4, and the cylinder is provided with a circulating water channel 3. The circulating water temperature control device 12 is provided with a shell, a second temperature detection probe 5, a heating wire tube 6 and a water pump 11. The shell is a cylinder, and a water outlet 7 and a return water port 10 are also provided in the middle of the upper side of the circulating water temperature control device 12. The heating wire tube 6 is fixed to the shell. Inside the body, a second temperature detection probe 5 is installed inside the side of the shell and is located above the heating wire tube 6. The water outlet 7 is connected to the circulating heating water inlet 2 through a hose, and the return water port 10 is connected to the circulating heating water outlet 4 through a hose; a first connecting block is installed outside the water outlet 7 of the circulating water temperature control device 12, and four openings are opened on the first connecting block, one of which is connected to the water outlet, and the other three openings are connected to the hose; a second connecting block is installed outside the return water port 10, and four openings are opened on the second connecting block, one of which is connected to the return water port, and the other three openings are connected to the hose.

[0021] The second temperature detection probe 5 detects the temperature of the circulating water in the circulating water temperature control device 12, and transmits the signal to the PLC module. The PLC module receives the signal and determines whether it is in the standard requirement range. If it is higher than the standard requirement range, the PLC transmits a signal to control the heating wire tube 6 to stop running, and the circulating water is cooled by external heat exchange; if it is lower than the standard requirement range, the PLC transmits a signal to control the heating wire tube 6 to run and heat the circulating water, so as to maintain the circulating water temperature in the circulating water stability control device within the standard requirement range.

[0022] The first temperature detection probe 8 detects the temperature of the rubber material, and the detected temperature is transmitted to the PLC module as an input signal to determine whether it is within the standard requirement range. If it is lower than the standard requirement range, the PLC module transmits a signal to the electromagnetic valve 9, which contains a total of multiple electromagnetic valves 9. The electromagnetic valves 9 are opened one by one in a progressive manner. During a single opening process, the corresponding electromagnetic valve 9 opening signal is simultaneously fed back to the PLC module, and the next electromagnetic valve 9 is opened in a progressive manner in turn, and the number of heating rollers 13 is increased, thereby achieving the effect of increasing the temperature of the rubber material; when the detected temperature is higher than the standard requirement range, the PLC module transmits a signal to the electromagnetic valve 9, and the electromagnetic valves 9 are closed one by one. During a single closing process, the corresponding electromagnetic valve 9 closing signal is simultaneously fed back to the PLC module, and the next electromagnetic valve is closed in a progressive manner in turn, and the number of heating rollers 13 is reduced, thereby achieving the effect of lowering the temperature of the rubber material.

[0023] like Figures 6-8As shown, the circulating water in the circulating water temperature control device 12 is powered by the water pump 11. The water pump 11 drives the circulating water to flow out from the water outlet 7 and run along the hose, and reaches the heating roller 13 through the circulating heating water inlet 2. There are multiple circulating water channels 3 inside the heating roller 13. The circulating water channels 3 are evenly arranged on the inner wall of the cylinder of the heating roller 13. After the circulating water enters the heating roller, it flows evenly into the circulating water channel to facilitate heat exchange with the rubber material, and then flows out through the circulating heating water outlet 4, runs along the hose, and returns to the circulating water temperature control device 12 through the return water port 10. The power system provides power for the heating roller 13. A small gear 15 is installed on the motor 14. The small gear 15 drives the large gear 16 to rotate, thereby driving the heating roller 13 to rotate.

[0024] The bracket is a double-layer bracket, with four legs, a conveyor belt and a support plate. The two legs on the left are longer than the two legs on the right. The support plate is horizontally installed on the legs, and the height is half of the right leg. The conveyor belt is obliquely installed at the top of the four legs. The conveyor belt is provided with a crawler, two rotating shafts and two side plates. The two rotating shafts are connected by crawlers, and the rotating shaft drives the crawler transmission. Two side plates are installed on the sides of the crawler and between the two rotating shafts, and the support plate is installed on the side plate. A "door"-shaped frame is also provided on the left side of the conveyor belt, and the first temperature detection probe 8 is installed in the middle of the "door"-shaped frame. A support seat matching the housing of the circulating water temperature control device 12 is fixed on the support plate, and a support block for supporting the water pump 11 is also fixed on the left side of the support seat; three pairs of support plates are fixed on both sides of the conveyor belt, and a round hole is opened in the middle of the support plate. The heating roller 13 is rotatably connected to the round hole of the support plate, and the hose connected to the water outlet 7 passes through the round hole of the front support plate and is inserted into the circulating heating water inlet 2. The rotary joint 1 is rotatably connected to the round hole of the support plate, and the hose connected to the return water port 10 passes through the round hole of the rear support plate and is inserted into the circulating heating water outlet 4. The rubber material is transported along the conveyor belt, and the heating roller 13 preheats the rubber material above it.

[0025] The pretreatment control device of the present invention has a simple structure, ensures that the rubber material is always within a suitable temperature range, can be selected and optimized according to actual conditions to achieve the best treatment effect, and ensures continuous and stable production through feedback adjustment closed-loop control, which is beneficial to improving product stability and reducing energy consumption.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rubber pretreatment control device, characterized in that: A support, a PLC control system, a first temperature detection probe (8) and a temperature control system are provided, wherein the temperature control system is provided with a circulating water temperature control device (12), an electromagnetic valve (9), a heating roller (13) and a power system, wherein the PLC control system, the first temperature detection probe (8), the circulating water temperature control device (12) and the heating roller (13) are mounted on the support, the electromagnetic valve (9) is mounted on the heating roller (13), the power system is connected to the heating roller (13), the PLC control system is electrically connected to the first temperature detection probe (8), the electromagnetic valve (9) and the circulating water temperature control device (12), and the circulating water temperature control device (12) is connected to the heating roller (13); The heating roller (13) is provided with a cylinder, a rotary joint (1), a circulating heating water inlet (2), a circulating water channel (3) and a circulating heating water outlet (4); the cylinder is a cylindrical body, the rotary joints (1) are mounted at both ends of the cylinder, the circulating heating water inlet (2) is provided at the front end of the cylinder, the circulating heating water outlet (4) is provided at the rear end of the cylinder, and the circulating water channel (3) is provided inside the cylinder; The circulating water temperature control device (12) is provided with a shell, a second temperature detection probe (5), a heating wire tube (6) and a water pump (11). The shell is a cylinder. A water outlet (7) and a water return port (10) are also provided in the middle of the upper side of the circulating water temperature control device. The heating wire tube (6) is fixed inside the shell. The second temperature detection probe (5) is installed inside the side of the shell and is located above the heating wire tube (6). The second temperature detection probe (5) is used to detect the temperature of the internal circulating water. The water outlet (7) is connected to the circulating heating water inlet (2) through a hose. The water return port (10) is connected to the circulating heating water outlet (4) through a hose. The water pump (11) is also installed on the outside of the shell. The water pump (11) is used to provide power for the circulating water.

2. The rubber pretreatment control device according to claim 1, characterized in that: A plurality of circulating water channels (3) are provided in the heating roller (13); the circulating water channels (3) are located close to the inner wall of the cylinder; and the circulating water channels (3) are connected to the circulating heating water inlet (2) and the circulating heating water outlet (4).

3. The rubber pretreatment control device according to claim 1, characterized in that: The support is a double-layer support, provided with four legs, a conveyor belt and a bottom plate, the two legs on the left being longer than the two legs on the right, the bottom plate being horizontally mounted on the legs and having a height half that of the legs on the right, the conveyor belt being obliquely mounted on the top ends of the four legs; a "door"-shaped frame is also provided on the left side of the conveyor belt, and the first temperature detection probe (8) is mounted in the middle of the "door"-shaped frame.

4. The rubber pretreatment control device according to claim 3, characterized in that: A support seat matching the housing of the circulating water temperature control device (12) is fixed on the bottom plate, and a support block for supporting the water pump (11) is also fixed on the left side of the support seat.

5. The rubber pretreatment control device according to claim 4, characterized in that: Three pairs of support plates are fixed on both sides of the conveyor belt, and a circular hole is opened in the middle of the support plate. The heating roller (13) is rotatably connected to the circular hole of the support plate. The hose connected to the water outlet (7) passes through the circular hole of the front support plate and is inserted into the circulating heating water inlet (2). The rotary joint (1) matches the circular hole of the support plate. The rotary joint (1) is rotatably connected to the support plate. The hose connected to the water return port (10) passes through the circular hole of the rear support plate and is inserted into the circulating heating water outlet (4).

6. The rubber pretreatment control device according to claim 5, characterized in that: The conveyor belt is provided with a crawler, two rotating shafts and two side plates. The two rotating shafts are connected by the crawler, and the rotating shaft drives the crawler transmission. Two side plates are installed between the sides of the crawler and the two rotating shafts, and the support plate is installed on the side plates.

7. The rubber pretreatment control device according to claim 1, characterized in that: The PLC control system is provided with a temperature control module, a temperature detection module, a first output module and a second output module; the temperature detection module is connected to the first temperature detection probe (8); the first output module is connected to the electromagnetic valve (9); the temperature control module is connected to the second temperature detection probe (5); and the second output module is connected to the heating wire tube (6).

8. The rubber pretreatment control device according to claim 7, characterized in that: The PLC control system is further provided with a progressive signal sending module and a feedback signal receiving module, the progressive signal sending module being used to control the electromagnetic valves (9) to open one by one, and the feedback signal receiving module being used to receive feedback signals from the electromagnetic valves (9).

9. The rubber pretreatment control device according to claim 5, characterized in that: The power system is provided with a motor (14) and a small gear (15); a large gear (16) is installed on the front side of the heating roller (13); the motor (14) is installed on the support plate; the small gear (15) is installed on the motor (14); and the small gear (15) is meshedly connected with the large gear (16).

10. The rubber pretreatment control device according to claim 1, characterized in that: A first connection block is installed outside the water outlet of the circulating water temperature control device (12), and the first connection block is provided with four openings, one of which is connected to the water outlet (7), and the other three openings are connected to the hose; a second connection block is installed outside the water return port, and the second connection block is provided with four openings, one of which is connected to the water return port (10), and the other three openings are connected to the hose.

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