Epoxy resin automatic quantitative proportioning device based on double peristaltic pumps

Abstract

The utility model discloses an automatic quantitative epoxy resin proportioning device based on double peristaltic pumps. The automatic quantitative epoxy resin proportioning device comprises a driving system, a double peristaltic pump system, a conveying system and a control system, the conveying system comprises an epoxy resin storage device, a curing agent storage device and a mixing device; the double peristaltic pump system comprises a first peristaltic pump and a second peristaltic pump; the output end of the epoxy resin storage device is connected with the input end of the first peristaltic pump; the output end of the curing agent storage device is connected with the input end of the second peristaltic pump; the output end of the first peristaltic pump and the output end of the second peristaltic pump are connected with the mixing device; the output end of the driving system is connected with the input end of the first peristaltic pump and the input end of the second peristaltic pump; and the control system is connected with the driving system, the double-peristaltic-pump system and the conveying system. The method has a wide application prospect in laboratory sample preparation and test analysis.

Description

Technical Field

[0001] This utility model belongs to the field of cold mounting sample preparation and relates to an automatic quantitative mixing device for epoxy resin based on a dual peristaltic pump. Background Technology

[0002] Epoxy resins are widely used in electronic packaging, composite materials, coatings, and adhesives due to their excellent mechanical properties, electrical properties, chemical resistance, and good processing performance. The performance of epoxy resins largely depends on the precision of the resin-curing agent ratio; accurate ratios play a crucial role in ensuring product quality.

[0003] Currently, the main methods for mixing epoxy resins in industrial production are as follows:

[0004] Manual proportioning: Operators measure and proportion ingredients according to the formula requirements by weighing or volume. This method has the following disadvantages: the accuracy of proportioning depends on the operator's experience and adherence to operating procedures; it is easily affected by human factors, resulting in poor batch-to-batch consistency; it is inefficient and unsuitable for large-scale production; and it easily leads to material waste during the proportioning process.

[0005] Metering pump proportioning system: Gear pumps or plunger pumps are used for metering and delivery. Although this is an improvement over manual proportioning, the following problems still exist: Gear pumps are prone to wear when delivering high-viscosity resins, affecting metering accuracy; plunger pumps have a complex structure, high maintenance costs, are difficult to clean, and are prone to cross-contamination; and they are prone to shear heating during delivery, affecting material properties.

[0006] Gravimetric proportioning system: Proportioning control is achieved through weighing sensors. This method has drawbacks: slow system response, unsuitability for continuous production, large equipment size, high investment cost, and weighing accuracy is greatly affected by external factors such as vibration.

[0007] In recent years, peristaltic pumps have been increasingly used in the field of fluid transportation due to their unique advantages. Related research shows that peristaltic pumps have the following characteristics: the pumped medium only comes into contact with the hose, avoiding cross-contamination and enabling precise delivery of small volumes; they have a simple structure and are easy to maintain; the hose is easy to replace, resulting in low cost.

[0008] However, existing single-pump mixing systems still have some problems in use: single-pump delivery is prone to pulsation, affecting the mixing accuracy, making it difficult to achieve synchronous delivery of resin and curing agent, and the adjustment range of the mixing ratio is limited. Utility Model Content

[0009] To address the existing problems in single-pump mixing systems, such as pulsation affecting mixing accuracy, difficulty in synchronous resin and curing agent delivery, and limited adjustment range of the mixing ratio, this invention provides an automatic quantitative mixing device for epoxy resin based on dual peristaltic pumps.

[0010] Drive system, dual peristaltic pump system, delivery system and control system;

[0011] The conveying system includes an epoxy resin storage device, a curing agent storage device, and a mixing device;

[0012] The dual peristaltic pump system includes a first peristaltic pump and a second peristaltic pump;

[0013] The output end of the epoxy resin storage device is connected to the input end of the first peristaltic pump;

[0014] The output end of the curing agent storage device is connected to the input end of the second peristaltic pump;

[0015] The output ends of the first peristaltic pump and the second peristaltic pump are connected to the mixing device;

[0016] The output end of the drive system is connected to the input end of the first peristaltic pump and the input end of the second peristaltic pump;

[0017] The control system is connected to the drive system, the dual peristaltic pump system, and the conveying system.

[0018] Furthermore, the pump head diameter of the first peristaltic pump is larger than that of the second peristaltic pump.

[0019] Furthermore: the drive system includes a motor, a motor controller, and a transmission structure;

[0020] The input terminal of the motor is connected to the motor controller;

[0021] The output end of the motor is connected to the input end of the transmission structure;

[0022] The output end of the transmission structure is connected to the input ends of the first peristaltic pump and the second peristaltic pump.

[0023] Furthermore: the control system includes a controller;

[0024] Furthermore, the control system includes a controller, which is a Siemens S7-1200 series PLC, a Mitsubishi FX5U series PLC, or an Omron CP1H series PLC.

[0025] This utility model provides an automatic quantitative mixing device for epoxy resin based on dual peristaltic pumps. This device uses a single motor to simultaneously drive two peristaltic pumps of different diameters, achieving a precise mixing ratio of epoxy resin and curing agent. It solves the technical problems of low mixing accuracy and low automation in existing technologies, and has the following advantages:

[0026] This application presents a device capable of achieving precise proportioning of epoxy resin and curing agent, with a high degree of automation and wide applicability, which has significant practical implications. The automatic quantitative proportioning device based on dual peristaltic pumps proposed in this invention aims to solve the aforementioned technical problems and provide a new proportioning device for precise epoxy resin proportioning.

[0027] This application presents an automated quantitative mixing device for epoxy resin based on dual peristaltic pumps, which has broad application prospects in laboratory sample preparation and testing. This device can significantly improve the accuracy and efficiency of epoxy resin sample preparation in the laboratory, and is particularly suitable for experimental analysis work requiring material property testing, process parameter optimization, and quality control.

[0028] The present invention has the following significant advantages:

[0029] 1. High mixing accuracy:

[0030] The mechanical structure ensures the mixing ratio, unaffected by external factors. The two pumps operate synchronously, avoiding errors caused by time differences. The characteristics of the peristaltic pump ensure a stable delivery volume.

[0031] 2. Simple and reliable structure: Only one motor is needed to drive two pumps, reducing transmission components, improving system reliability, reducing maintenance costs, and making it easy to operate;

[0032] 3. High adaptability: Different mixing ratios can be achieved by changing pump heads of different diameters; the flow rate can be adjusted within a wide range; suitable for materials of different viscosities.

[0033] 5. Good economic efficiency: Low equipment investment cost, low operating energy consumption, simple maintenance, and low spare parts cost. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the modules in this application;

[0036] Figure 2 This is a schematic diagram of the structure of this application;

[0037] Reference numerals: 1. Drive system; 2. Conveying system; 3. Dual peristaltic pump system; 4. Control system; 5. Epoxy resin storage tank; 6. Curing agent storage tank; 7. First peristaltic pump; 8. Second peristaltic pump; 9. Motor; 10. Controller; 11. Mixer. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] An automatic epoxy resin dispensing device based on dual peristaltic pumps includes...

[0041] Drive system 1, dual peristaltic pump system 3, conveying system 2, and control system 4;

[0042] The conveying system 2 includes an epoxy resin storage device, a curing agent storage device, and a mixing device;

[0043] The dual peristaltic pump system 3 includes a first peristaltic pump 7 and a second peristaltic pump 8;

[0044] The first peristaltic pump 7 is used to deliver epoxy resin;

[0045] The second peristaltic pump 8 is used to deliver the curing agent;

[0046] The output end of the epoxy resin storage device is connected to the input end of the first peristaltic pump 7 via a delivery hose and a connector.

[0047] The output end of the curing agent storage device is connected to the input end of the second peristaltic pump 8 via a delivery hose and a connector;

[0048] The output end of the first peristaltic pump 7 and the output end of the second peristaltic pump 8 are connected to the mixing device;

[0049] The output end of the drive system 1 is connected to the input end of the first peristaltic pump 7 and the input end of the second peristaltic pump 8;

[0050] The control system 4 is connected to the drive system 1, the dual peristaltic pump system 3, and the conveying system 2.

[0051] The pump head diameter of the first peristaltic pump 7 is larger than the pump head diameter of the second peristaltic pump 8. Establish the delivery volume ratio:

[0052] The ratio of the delivery capacity of two peristaltic pumps is determined by the ratio of their pump head diameters. At the same rotational speed, the delivery volume ratio remains constant.

[0053] The drive system 1 includes a motor 9, a motor 9 controller 10, and a transmission structure;

[0054] The input terminal of the motor 9 is connected to the motor 9 controller 10;

[0055] The output end of the motor 9 is connected to the input end of the transmission structure;

[0056] The motor 9 controller 10 uses the Leadshine DM556 / DM856 model: suitable for small and medium-sized stepper motors 9, with a voltage range of 20-50VDC, a maximum current of 5.6A, and microstepping function, suitable for high-precision control;

[0057] The motor 9 controller 10 is either model Geckodrive G540: suitable for multi-axis control, supports 4 stepper motors 9, voltage range is 18-50VDC, maximum current is 3.5A, and has built-in micro-stepping drive.

[0058] The output end of the transmission structure is connected to the input ends of the first peristaltic pump 7 and the second peristaltic pump 8.

[0059] The motor 9 is a precision stepper motor 9, used to provide the power source;

[0060] The motor 9 controller 10 is used to precisely control the speed of the motor 9; by controlling the speed of the motor 9, the flow rate can be adjusted, and the required flow rate can be set according to the process requirements. The speed of the motor 9 is directly proportional to the flow rate, and the total conveying volume can be adjusted while maintaining the proportioning accuracy.

[0061] The transmission mechanism transmits the power of the motor 9 to two peristaltic pumps, the first peristaltic pump 7 and the second peristaltic pump 8, simultaneously to ensure synchronous operation.

[0062] The control system 4 includes a controller 10 for controlling the operation of the entire system; the recommended model of the controller 10 is:

[0063] Siemens S7-1200 (CPU 1214C DC / DC / DC)

[0064] Mitsubishi FX5U-32MT / ES

[0065] Omron CP1H-XA40DR-A

[0066] Main controller 10 connection relationship: Input device connection:

[0067] -Start / Stop button

[0068] - Emergency Stop Button

[0069] The epoxy resin storage device is an epoxy resin storage tank 5;

[0070] The curing agent storage device is a curing agent storage tank 6;

[0071] The mixing device employs a mixer 11 for mixing the materials output from the first peristaltic pump 7 and the second peristaltic pump 8.

[0072] This automated epoxy resin dispensing device, through precise control of dual peristaltic pumps, can improve dispensing accuracy to within ±1%, significantly better than the ±3-5% error range of manual dispensing. In daily laboratory work, it can reduce the preparation time of each batch of samples from 15-20 minutes by manual operation to 5-8 minutes, increasing efficiency by approximately 60%. Precise dispensing reduces waste of epoxy resin and curing agent caused by improper manual operation, increasing material utilization by approximately 20%. Based on an estimated annual laboratory sample preparation volume of approximately 300 batches, this translates to a reduction in material waste value of approximately 1,000 RMB per year. Simultaneously, automated dispensing significantly improves the reliability and repeatability of experimental data, which is of great value in enhancing the quality of research work.

[0073] This invention ingeniously solves the technical problem of epoxy resin proportioning by using a single motor to drive two peristaltic pumps of different diameters, achieving high-precision, low-cost, and easy-to-operate automatic quantitative proportioning, and has good application prospects.

[0074] Example 1: Epoxy resin and curing agent formulation system with a ratio of 5:1

[0075] Mixing ratio requirements:

[0076] The volume ratio of epoxy resin to curing agent is 5:1, and the total system flow rate is designed to be 2L / min (adjustable).

[0077] Peristaltic pump specifications:

[0078] First peristaltic pump 7 (for epoxy resin): Pump head outer diameter: 120mm; Pump head inner diameter: 90mm; Rotor hub diameter: 60mm; Number of extrusion rollers: 3; Extrusion roller diameter: 15mm; Single-turn delivery: 50.0ml;

[0079] Second peristaltic pump 8 (for curing agent): Pump head outer diameter: 60mm; Pump head inner diameter: 45mm; Rotor hub diameter: 30mm; Number of extrusion rollers: 3; Extrusion roller diameter: 12mm; Single-turn delivery: 10.0ml;

[0080] Hose specifications:

[0081] Epoxy resin delivery hose: Inner diameter: 15mm, outer diameter: 19mm;

[0082] Material: Food-grade silicone tubing;

[0083] Hardness: 60±5°Shore A;

[0084] Hardener delivery hose: Inner diameter: 6mm; Outer diameter: 10mm;

[0085] Material: Food-grade silicone tubing;

[0086] Hardness: 60±5°Shore A;

[0087] II. Calculation of Working Parameters

[0088] Single-transit conveyor capacity calculation:

[0089] Epoxy resin pump (first peristaltic pump 7): Hose cross-sectional area: π×(7.5mm)²=176.7mm 2 Single-loop conveyor length: π × 90mm = 282.7mm; Single-loop conveyor capacity: 176.7mm 2 ×282.7mm=50.0ml / cycle

[0090] Hardener pump (second peristaltic pump 8): Hose cross-sectional area: π×(3mm)²=28.3mm 2 Single-loop conveyor length: π × 45mm = 141.4mm; Single-loop conveying capacity: 28.3mm 2 ×141.4mm=10.0ml / cycle

[0091] Actual ratio = 50.0:10.0 = 5:1;

[0092] The temperature of the epoxy resin in the epoxy resin tank is 20-25 degrees Celsius, and the viscosity is 10000-15000 mPa·s.

[0093] The temperature of the curing agent in the curing agent storage tank is 20-25 degrees Celsius, and the viscosity is 500-1000 mPa·s.

[0094] Flow calculation:

[0095] Target total flow rate: 2L / min (1667ml / min epoxy resin + 333ml / min curing agent)

[0096] Required motor speed: 9

[0097] Epoxy resin: 1667ml / min ÷ 50.0ml / cycle ≈ 33.3rpm;

[0098] Hardener: 333ml / min ÷ 10.0ml / cycle ≈ 33.3rpm;

[0099] Set the operating speed of motor 9 to 33 rpm (with a certain margin);

[0100] Epoxy resin single-loop delivery: 50.0ml;

[0101] Epoxy resin single-loop delivery: 10.0ml;

[0102] III. Performance Indicators

[0103] Proportioning accuracy:

[0104] Theoretical ratio: 5:1 (50.0ml:10.0ml);

[0105] Actual mixing ratio error: ≤ ±0.5%;

[0106] Repeatability: ≤±0.3%;

[0107] Flow range:

[0108] Minimum flow rate: 0.5 L / min (motor speed 9, 8.3 rpm);

[0109] Maximum flow rate: 3L / min (motor 9, speed 50rpm);

[0110] Flow rate adjustment accuracy: ±0.5%.

[0111] An automated quantitative mixing device for epoxy resin based on dual peristaltic pumps has broad application prospects in laboratory sample preparation and testing. This device can significantly improve the accuracy and efficiency of epoxy resin sample preparation in the laboratory, and is particularly suitable for experimental analysis work requiring material performance testing, process parameter optimization, and quality control. Through precise automated quantitative mixing, it not only ensures the reliability and repeatability of experimental data, but also provides more accurate experimental basis for product development and quality improvement for Panzhihua Iron and Steel Group and related enterprises. Furthermore, the device is easy to operate and has low maintenance costs, making it suitable for application in laboratories of other research institutes. It has significant value in improving laboratory automation levels and research efficiency, and provides strong technical support for material development and quality control.

[0112] This automated epoxy resin dispensing device, through precise control of dual peristaltic pumps, can improve dispensing accuracy to within ±1%, significantly better than the ±3-5% error range of manual dispensing. In daily laboratory work, it can reduce the preparation time of each batch of samples from 15-20 minutes by manual operation to 5-8 minutes, increasing efficiency by approximately 60%. Precise dispensing reduces waste of epoxy resin and curing agent caused by improper manual operation, increasing material utilization by approximately 20%. Based on an estimated annual laboratory sample preparation volume of approximately 300 batches, this translates to a reduction in material waste value of approximately 1,000 RMB per year. Simultaneously, automated dispensing significantly improves the reliability and repeatability of experimental data, which is of great value in enhancing the quality of research work.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic quantitative dispensing device for epoxy resin based on dual peristaltic pumps, characterized in that: include Drive system, dual peristaltic pump system, delivery system and control system; The conveying system includes an epoxy resin storage device, a curing agent storage device, and a mixing device; The dual peristaltic pump system includes a first peristaltic pump and a second peristaltic pump; The output end of the epoxy resin storage device is connected to the input end of the first peristaltic pump; The output end of the curing agent storage device is connected to the input end of the second peristaltic pump; The output ends of the first peristaltic pump and the second peristaltic pump are connected to the mixing device; The output end of the drive system is connected to the input end of the first peristaltic pump and the input end of the second peristaltic pump; The control system is connected to the drive system, the dual peristaltic pump system, and the conveying system.

2. The automatic epoxy resin metering device based on a dual peristaltic pump according to claim 1, characterized in that: The pump head diameter of the first peristaltic pump is larger than that of the second peristaltic pump.

3. The automatic epoxy resin metering device based on a dual peristaltic pump according to claim 1, characterized in that: The drive system includes a motor, a motor controller, and a transmission structure; The input terminal of the motor is connected to the motor controller; The output end of the motor is connected to the input end of the transmission structure; The output end of the transmission structure is connected to the input ends of the first peristaltic pump and the second peristaltic pump.

4. The automatic epoxy resin metering device based on a dual peristaltic pump according to claim 1, characterized in that: The control system includes a controller.

5. The automatic epoxy resin metering device based on a dual peristaltic pump according to claim 1, characterized in that: The control system includes a controller, which is a Siemens S7-1200 series PLC, a Mitsubishi FX5U series PLC, or an Omron CP1H series PLC.

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