Device for monitoring and adjusting hardness of rubber compound on line
By integrating a pressure sensor and an ultrasonic generator into the rubber compound conveying pipeline, the shortcomings of traditional rubber compound hardness testing have been addressed, enabling online monitoring and adjustment, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINGTAI ZHAO XIN XIANGSU PROD CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional rubber compound hardness testing relies on manual sampling at regular intervals, which cannot achieve continuous monitoring throughout the entire process, resulting in low production efficiency and difficulty in timely detection of substandard products.
Design a monitoring and adjustment mechanism that includes a pressure sensor, an ultrasonic generator, and a controller. By combining pressure and ultrasonic detection, the hardness of the compound can be monitored in real time, and the mixing time can be adjusted according to the detection results.
It enables real-time and accurate monitoring of the hardness of the compound rubber, reduces errors, and improves production efficiency and product quality stability.
Smart Images
Figure CN224116489U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber processing equipment technology, and in particular to a device for online monitoring and adjustment of the hardness of rubber compound. Background Technology
[0002] Compound rubber refers to a non-crosslinked, flowable rubber compound in which compounding agents are mixed with raw rubber in block, granular, or powder form. The rubber compound is made by mixing raw rubber or plasticized rubber with compounding agents according to a formula using a rubber mixing mill. The main raw material is methyl or vinyl raw rubber, with the addition of silica, crosslinking agents, structure control agents, coupling agents, and other materials, all mixed in a high-temperature internal mixer. Compound rubber is the raw material for manufacturing rubber products, i.e., a semi-finished product. Therefore, the quality of the colloidal dispersion of the compound rubber directly affects the quality of the finished product. Simultaneously, the viscoelasticity and rheological properties of the compound rubber directly affect the processing performance of the rubber compound and subsequent processing techniques such as molding, extrusion, calendering, and pressing.
[0003] In traditional production models, the hardness testing of rubber compounds mainly relies on periodic manual sampling, followed by testing with professional hardness testing instruments in a laboratory. This method has significant drawbacks: firstly, sampling cannot provide continuous monitoring of the hardness of rubber compounds throughout the production line; once a deviation in hardness occurs, it is difficult to detect and address it in a timely manner, easily leading to the production of a large number of substandard products; secondly, the time required from sampling to obtaining test results is long, disrupting production continuity and severely limiting production efficiency. Therefore, it is necessary to design a device for online monitoring and adjustment of rubber compound hardness to solve the above problems.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a device for online monitoring and adjustment of the hardness of rubber compound, in order to solve the above-mentioned problems.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a device for online monitoring and adjustment of the hardness of rubber compound, comprising:
[0007] A rubber compound conveying pipeline, wherein a monitoring and adjustment mechanism is provided on the rubber compound conveying pipeline;
[0008] The monitoring and adjustment mechanism includes a pressure sensor, a baffle, a fixed sleeve, a T-shaped splicing block, an ultrasonic generator, an ultrasonic receiver, and a controller;
[0009] The rubber compound conveying pipeline has multiple mounting holes. The pressure sensor is engaged with the mounting holes. The baffle is fixedly mounted on the pressure sensor. The fixing sleeve is fixedly fitted on the outside of the rubber compound conveying pipeline. The T-shaped splicing block is engaged with the fixing sleeve. The ultrasonic generator and ultrasonic receiver are respectively fixedly connected to the corresponding T-shaped splicing blocks. The controller is fixedly mounted on the rubber compound conveying pipeline.
[0010] A further feature of this invention is that the monitoring and adjustment mechanism includes a movable sleeve, a pressing plate, a plug rod, and a spring. The movable sleeve is fixedly connected to the pressing plate and the plug rod. The pressing plate abuts against the baffle. The plug rod is engaged with the T-shaped splicing block. The spring is fixedly installed between the movable sleeve and the fixed sleeve.
[0011] A further feature of this invention is that the ultrasonic generator and the ultrasonic receiver are located on the same vertical axis, and both the ultrasonic generator and the ultrasonic receiver are in close contact with the rubber compound conveying pipeline.
[0012] By adopting the above technical solution, ultrasonic testing and processing can be carried out conveniently.
[0013] A further feature of this invention is that the outer side of the rubber compound conveying pipe is provided with multiple baffles, and the baffles are engaged with the baffles.
[0014] A further feature of this invention is that a polytetrafluoroethylene (PTFE) sealing gasket is fixedly sleeved on the outside of the pressure sensor, and the pressure sensor is in sealed contact with the mounting hole through the PTFE sealing gasket.
[0015] By adopting the above technical solution, the sealing of the connection is guaranteed.
[0016] A further feature of this invention is that the fixed sleeve has two T-shaped splicing slots, and the T-shaped splicing blocks are engaged with the T-shaped splicing slots.
[0017] By adopting the above technical solution, it is convenient to limit the position of the T-shaped splicing block.
[0018] A further feature of this invention is that the movable sleeve is slidably sleeved on the outside of the rubber compound conveying pipe, and the pressing plate has a square hole.
[0019] A further feature of this invention is that: a slot is provided on the side of the T-shaped splicing block, the insert rod is engaged with the slot, and a sliding hole is provided on the fixing sleeve, in which the insert rod is slidably installed.
[0020] The beneficial effects of this utility model are:
[0021] This invention, through its monitoring and adjustment mechanism, combines a pressure sensor, an ultrasonic generator, an ultrasonic receiver, and a controller to more comprehensively and accurately reflect the actual hardness of the rubber compound. Pressure testing primarily reflects the mechanical action of the rubber compound on the inner wall of the pipeline during flow, while ultrasonic testing focuses on the internal physical structure and elastic properties of the rubber compound. The two complement each other, effectively reducing errors that may arise from a single testing method. The controller adjusts the hardness of the rubber compound by controlling the mixing time of the mixing equipment connected to the rubber delivery pipeline. Furthermore, the pressure sensor, ultrasonic generator, and ultrasonic receiver are easily disassembled for inspection and maintenance, making it convenient to use. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of a device for online monitoring and adjustment of the hardness of rubber compound proposed in this utility model. Figure 1 .
[0024] Figure 2 This is a schematic diagram of the structure of a device for online monitoring and adjustment of the hardness of rubber compound proposed in this utility model. Figure 2 .
[0025] Figure 3 yes Figure 2 A schematic diagram of part A in the diagram.
[0026] Figure 4 yes Figure 2 A schematic diagram of part B in the diagram.
[0027] In the diagram, 1. Rubber compound conveying pipeline; 2. Mounting hole; 3. Pressure sensor; 4. Baffle; 5. Moving sleeve; 6. Pressing plate; 7. Square hole; 8. Fixed sleeve; 9. T-shaped splicing block; 10. T-shaped splicing groove; 11. Ultrasonic generator; 12. Insert rod; 13. Spring; 14. Controller. Detailed Implementation
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.
[0029] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0030] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a device for online monitoring and adjustment of the hardness of rubber compound, comprising:
[0031] The rubber compound conveying pipeline 1 is equipped with a monitoring and adjustment mechanism. It should be noted that the rubber compound conveying pipeline 1 is connected to the mixing equipment.
[0032] The monitoring and adjustment mechanism includes a pressure sensor 3, a baffle 4, a fixed sleeve 8, a T-shaped splicing block 9, an ultrasonic generator 11, an ultrasonic receiver, and a controller 14.
[0033] Multiple mounting holes 2 are provided on the rubber compound conveying pipeline 1. Pressure sensor 3 is fitted into the mounting hole 2. Baffle 4 is fixedly installed on pressure sensor 3. Fixed sleeve 8 is fixedly fitted on the outside of rubber compound conveying pipeline 1. T-shaped splicing block 9 is fitted into fixed sleeve 8. Ultrasonic generator 11 and ultrasonic receiver are fixedly connected to the corresponding T-shaped splicing block 9 respectively. Controller 14 is fixedly installed on rubber compound conveying pipeline 1.
[0034] Through the aforementioned monitoring and adjustment mechanism, pressure sensor 3 senses the pressure exerted by the rubber compound on the inner wall of the pipeline and converts it into an electrical signal output; ultrasonic generator 11 emits ultrasonic waves of a specific frequency and intensity to the rubber compound, and ultrasonic receiver begins to capture the ultrasonic signal after it has propagated through the rubber compound, obtaining the pressure and ultrasonic propagation data of the rubber compound. By comprehensively analyzing the data obtained from the two different detection methods, the actual hardness of the rubber compound can be reflected more comprehensively and accurately. The mixing time of the mixing equipment connected to the rubber compound conveying pipeline 1 is controlled by controller 14. This is existing technology and will not be described in detail here.
[0035] Specifically, the monitoring and adjustment mechanism also includes a movable sleeve 5, a pressing plate 6, a plug rod 12, and a spring 13. The movable sleeve 5 is fixedly connected to the pressing plate 6 and the plug rod 12. The pressing plate 6 abuts against the baffle 4. The plug rod 12 is engaged with the T-shaped splicing block 9. The spring 13 is fixedly installed between the movable sleeve 5 and the fixed sleeve 8.
[0036] Through the aforementioned monitoring and adjustment mechanism, the movable sleeve 5 can be pulled later, and the movable sleeve 5 stretches the spring 13, causing the pressure plate 6 to separate from the baffle 4. At this time, it is convenient to remove the pressure sensor 3 for maintenance, and the insertion rod 12 can be separated from the T-shaped splicing block 9, allowing the ultrasonic generator 11 and ultrasonic receiver to be removed for inspection and maintenance.
[0037] Specifically, the ultrasonic generator 11 and the ultrasonic receiver are located on the same vertical axis. Both the ultrasonic generator 11 and the ultrasonic receiver are in close contact with the rubber compound delivery pipe 1. It should be noted that an appropriate amount of ultrasonic coupling agent, such as petroleum jelly or special ultrasonic coupling paste, can be applied to reduce the reflection of ultrasonic waves at the interface and improve the coupling efficiency.
[0038] Specifically, multiple baffles are provided on the outside of the rubber compound conveying pipe 1, and the baffle 4 is engaged with the baffles. A polytetrafluoroethylene (PTFE) sealing gasket is fixedly sleeved on the outside of the pressure sensor 3. The pressure sensor 3 is in sealed contact with the mounting hole 2 through the PTFE sealing gasket. It should be noted that this can ensure the sealing of the connection and ensure that no rubber compound seeps out. The sensing end of the pressure sensor 3 is flush with the inner wall of the rubber compound conveying pipe 1.
[0039] Specifically, the fixed sleeve 8 has two T-shaped splicing slots 10, and the T-shaped splicing block 9 is engaged with the T-shaped splicing slot 10. The T-shaped splicing block 9 has a slot on its side, and the insertion rod 12 is engaged with the slot. The fixed sleeve 8 has a sliding hole, and the insertion rod 12 is slidably installed in the sliding hole. It should be noted that this makes it convenient to limit the position of the T-shaped splicing block 9.
[0040] Specifically, the movable sleeve 5 is slidably sleeved on the outside of the rubber compound conveying pipe 1, and the clamping plate 6 has a square hole 7. It should be noted that the square hole 7 facilitates the disassembly and assembly of the pressure sensor 3.
[0041] Working principle:
[0042] S1: During the production of compound rubber, when the compound rubber flows through the position where the pressure sensor 3, ultrasonic generator 11, and ultrasonic receiver are installed on the compound rubber conveying pipe 1, the two units start working simultaneously. The compound rubber with higher hardness exerts relatively greater pressure on the inner wall of the compound rubber conveying pipe 1 during the flow process. The pressure sensor 3 senses the pressure exerted by the compound rubber on the inner wall of the pipe and converts it into an electrical signal output.
[0043] S2: In rubber compounds with higher hardness, the ultrasonic wave propagation speed is relatively fast and the attenuation is relatively small; while in rubber compounds with lower hardness, the propagation speed is slower and the attenuation is larger. The ultrasonic generator 11 emits ultrasonic waves of a specific frequency and intensity into the rubber compound, and the ultrasonic receiver begins to capture the ultrasonic wave signal after it has propagated through the rubber compound, thereby obtaining the pressure and ultrasonic propagation data of the rubber compound.
[0044] S3: By comprehensively analyzing the data obtained from the two different testing methods, the actual hardness of the rubber compound can be reflected more comprehensively and accurately. This is because pressure testing mainly reflects the mechanical action of the rubber compound on the inner wall of the pipe during the flow process, while ultrasonic testing focuses on reflecting the internal physical structure and elastic properties of the rubber compound. The two complement each other and can effectively reduce the errors that may be caused by a single testing method. The mixing time of the mixing equipment connected to the rubber compound conveying pipe 1 is controlled by the controller 14. If the hardness is too high, the mixing time is appropriately shortened to inhibit excessive cross-linking of rubber molecules and reduce the hardness; if the hardness is too low, the mixing time is extended to enhance the cross-linking effect of rubber molecules and increase the hardness.
[0045] S4: Later, the movable sleeve 5 can be pulled, and the movable sleeve 5 stretches the spring 13, so that the pressure plate 6 is separated from the baffle 4. At this time, it is convenient to remove the pressure sensor 3 for maintenance, and the insertion rod 12 can be separated from the T-shaped splicing block 9. The ultrasonic generator 11 and ultrasonic receiver can be removed for inspection and maintenance.
[0046] The above provides a detailed description of the device for online monitoring and adjustment of the hardness of rubber compound provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A device for online monitoring and adjustment of the hardness of rubber compound, characterized in that, include: A rubber compound conveying pipeline (1) is provided with a monitoring and adjustment mechanism; The monitoring and adjustment mechanism includes a pressure sensor (3), a baffle (4), a fixed sleeve (8), a T-shaped splicing block (9), an ultrasonic generator (11), an ultrasonic receiver, and a controller (14); The rubber compound conveying pipeline (1) is provided with multiple mounting holes (2), the pressure sensor (3) is fitted into the mounting holes (2), the baffle (4) is fixedly installed on the pressure sensor (3), the fixing sleeve (8) is fixedly fitted on the outside of the rubber compound conveying pipeline (1), the T-shaped splicing block (9) is fitted into the fixing sleeve (8), the ultrasonic generator (11) and the ultrasonic receiver are respectively fixedly connected to the corresponding T-shaped splicing block (9), and the controller (14) is fixedly installed on the rubber compound conveying pipeline (1).
2. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 1, characterized in that, The monitoring and adjustment mechanism also includes a movable sleeve (5), a pressing plate (6), a plug rod (12), and a spring (13). The movable sleeve (5) is fixedly connected to the pressing plate (6) and the plug rod (12). The pressing plate (6) abuts against the baffle (4). The plug rod (12) is engaged with the T-shaped splicing block (9). The spring (13) is fixedly installed between the movable sleeve (5) and the fixed sleeve (8).
3. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 1, characterized in that, The ultrasonic generator (11) and ultrasonic receiver are located on the same vertical axis, and both the ultrasonic generator (11) and ultrasonic receiver are in close contact with the rubber compound conveying pipe (1).
4. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 1, characterized in that, The rubber compound conveying pipeline (1) has multiple baffles on its outer side, and the baffle (4) is engaged with the baffles.
5. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 1, characterized in that, The pressure sensor (3) is fixedly fitted with a polytetrafluoroethylene sealing gasket on the outside, and the pressure sensor (3) is in sealed contact with the mounting hole (2) through the polytetrafluoroethylene sealing gasket.
6. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 1, characterized in that, The fixed sleeve (8) has two T-shaped splicing slots (10), and the T-shaped splicing block (9) is engaged with the T-shaped splicing slot (10).
7. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 2, characterized in that, The movable sleeve (5) is slidably sleeved on the outside of the rubber compound conveying pipe (1), and the clamping plate (6) has a square hole (7).
8. The device for online monitoring and adjustment of the hardness of rubber compound according to claim 1, characterized in that, The T-shaped splicing block (9) has a slot on its side, and the insert rod (12) is engaged with the slot. The fixed sleeve (8) has a sliding hole, and the insert rod (12) is slidably installed in the sliding hole.