Electronic mold-closing metering glue injection device

Abstract

The utility model provides an electronic mold-closing metering glue injection device, which comprises a bottom plate, a glue injection mixing box, a control box and a glue injection pump, a first storage barrel and a second storage barrel are mounted on the glue injection mixing box; a glue injection mixing barrel is arranged in the glue injection mixing box; a stirrer is arranged in the glue injection mixing barrel; the glue injection mixing barrel is connected with an electromagnetic three-way valve and a pneumatic three-way valve; the output end of the storage barrel is connected to the pneumatic three-way valve of the glue injection and mixing barrel through a pipeline; a gear pump and a flow meter are arranged on the pipeline; according to the utility model, independent control, accurate metering and efficient mixing of two paths of materials can be realized. The mixing requirement of the RTM process on the resin and the curing agent is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of unsaturated polyester resin, especially relates to a closed mold metering glue injection device of electronic type. BACKGROUND

[0002] Resin transfer moulding (RTM) is a process method that resin is injected into a closed mold to infiltrate the reinforced material and solidify. With the application of RTM process in unsaturated polyester resin products, the control process of glue is becoming more and more strict.

[0003] At present, the raw materials of several different components of the unsaturated polyester resin RTM process are proportioned by workers through electronic scales or volumetric measuring tools, and the proportioned glue is placed in a glue injection mixing barrel and manually mixed by an electric mixer.

[0004] At present, the raw materials of several different components of the unsaturated polyester resin RTM process are proportioned by workers through electronic scales or volumetric measuring tools, and the proportioned glue is placed in a glue injection mixing barrel and manually mixed by an electric mixer. UTILITY MODEL CONTENTS

[0005] The utility model provides a closed mold metering glue injection device of electronic type, and the system can solve the problems of manual weighing and proportioning and mixer mixing, and cannot meet the process requirements.

[0006] The closed mold metering glue injection device of electronic type comprises a bottom plate, and a glue injection mixing barrel and a control box are arranged on the bottom plate;

[0007] A first storage barrel and a second storage barrel are installed on the glue injection mixing barrel; a glue injection mixing barrel is arranged in the glue injection mixing barrel; and a mixer is arranged in the glue injection mixing barrel;

[0008] A first electromagnetic three-way valve and a first pneumatic three-way valve are sequentially connected to the first feeding end of the glue injection mixing barrel;

[0009] A second electromagnetic three-way valve and a second pneumatic three-way valve are sequentially connected to the second feeding end of the glue injection mixing barrel;

[0010] The output end of the first storage barrel is connected to the first end of the first pneumatic three-way valve of the glue injection mixing barrel through a first pipeline; and the second end of the first pneumatic three-way valve is connected to the first electromagnetic three-way valve;

[0011] A gear pump and a first flowmeter are arranged on the first pipeline;

[0012] The output end of the second storage barrel is connected to the first end of the second pneumatic three-way valve of the glue injection mixing barrel through a second pipeline; and the second end of the second pneumatic three-way valve is connected to the second electromagnetic three-way valve;

[0013] The second pipeline is equipped with a gear pump and a second flow meter;

[0014] The control box contains a PLC control module; the control box is equipped with a display screen and control buttons.

[0015] The PLC control module is communicatively connected to the display screen, control buttons, stirrer, first gear pump, second gear pump, first solenoid three-way valve, second solenoid three-way valve, first flow meter, and second flow meter. The display screen shows flow information and controls the operation of the stirrer, first gear pump, second gear pump, first solenoid three-way valve, and second solenoid three-way valve.

[0016] It should be further noted that a first liquid level sensor is installed on the first storage tank;

[0017] A second liquid level sensor is installed on the second storage tank.

[0018] It should be further noted that a first temperature sensor is also installed on the first storage hopper;

[0019] A second temperature sensor is also installed on the second storage tank.

[0020] It should be further noted that a first pressure sensor is installed on the pipeline between the first gear pump and the first pneumatic three-way valve;

[0021] A second pressure sensor is installed on the pipeline between the second gear pump and the second pneumatic three-way valve.

[0022] A third pressure sensor is installed on the glue mixing tank.

[0023] It should be further noted that the bottom of the base plate is equipped with casters.

[0024] It should be further noted that the third end of the first pneumatic three-way valve is connected to the first storage tank through the first recovery pipeline;

[0025] The third end of the second pneumatic three-way valve is connected to the second storage tank via the second recovery pipeline.

[0026] It should be further noted that the control box is equipped with a door, a power socket, and a data communication interface.

[0027] It should be further noted that the PLC control module includes: DP / PA coupler, Modbus communication module, HSC high-speed counter, DI module, and analog input module;

[0028] The PLC control module communicates with the host computer via Ethernet.

[0029] It should be further noted that the PLC control module is either the CompactLogix1769-L35E module or the XD3E-24 model PLC module.

[0030] As can be seen from the above technical solutions, this utility model has the following advantages:

[0031] In the electronic closed-mold metering dispensing device provided by this utility model, the first gear pump and the second gear pump serve as a conveying system. After drawing raw materials from the first and second storage tanks, they are conveyed quantitatively and precisely. The flow rate is measured by the first and second flow meters. The first and second flow meters feed the monitoring data back to the PLC control module, which displays the collected flow data. Thus, this utility model enables independent control, precise metering, and efficient mixing of the two material streams. In practical applications, the device can flexibly adjust the flow rate and ratio of the two material streams according to production needs, thereby meeting the dispensing requirements of different products. Simultaneously, the configuration of dual valves and the precise control of the gear pumps and flow meters improve the reliability and stability of the system, providing a strong guarantee for efficient factory production. Attached Figure Description

[0032] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0033] Figure 1 Schematic diagram of an electronic closed-mold metering and dispensing device;

[0034] Figure 2 A schematic diagram of an embodiment of an electronic closed-mold metering and dispensing device;

[0035] Figure 3 This is a schematic diagram of another embodiment of an electronic closed-mold metering and dispensing device.

[0036] Figure 4 This is a schematic diagram of the PLC control module for an electronic closed-mold metering and dispensing device. Detailed Implementation

[0037] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0038] like Figures 1 to 3 As shown, the electronic closed-mold metering and dispensing device provided by this utility model includes: a base plate 1, on which a dispensing mixing tank 2 and a control box 3 are mounted. Casters 21 are installed at the bottom of the base plate.

[0039] In this embodiment, a first storage tank 4 and a second storage tank 5 are installed on the glue mixing tank 2; a glue mixing container 6 is provided inside the glue mixing tank 2; and a stirrer is provided inside the glue mixing container 6. The first storage tank 4 and the second storage tank 5 are respectively filled with resin and curing agent for mixing inside the glue mixing container 6.

[0040] In the electronic closed-mold metering and dispensing device, the dispensing mixing tank 6 serves as the mixing component, and its feed end is connected to an electromagnetic three-way valve and a pneumatic three-way valve to ensure that the materials can be mixed accurately and efficiently.

[0041] Specifically, the first feed end of the glue mixing tank 6 is connected to the first storage tank 4 via a valve. Specifically, the first feed end is connected to a first electromagnetic three-way valve 7, which controls the flow and direction of the fluid using electromagnetic force, and features rapid response and precise control.

[0042] The output of the first electromagnetic three-way valve 7 is connected to a first pneumatic three-way valve 8. The pneumatic three-way valve uses air pressure difference to drive the rotation of the valve core, thereby changing the fluid channel and realizing the diversion or merging of fluid. This dual valve configuration not only improves the reliability of the system, but also facilitates flexible flow control and flow direction switching.

[0043] In this embodiment, the first storage tank 4 is connected to the first pneumatic three-way valve 8 of the glue mixing tank 6 via a first pipeline. A first gear pump 9 is installed on the first pipeline to provide stable fluid delivery pressure and ensure that the material can continuously and uniformly enter the mixing tank. Simultaneously, a first flow meter 10 is also installed on the first pipeline to accurately measure the amount of material flowing through, providing flow data for precise control of the device.

[0044] Similarly, the second inlet of the glue mixing tank 6 also uses the same connection method. The second inlet is sequentially connected to the second electromagnetic three-way valve 11 and the second pneumatic three-way valve 12, forming another independent fluid control loop. The output of the second storage tank 5 is connected to the second pneumatic three-way valve 12 of the glue mixing tank 6 through a second pipeline. A second gear pump 13 and a second flow meter 14 are also installed to ensure stable delivery and accurate metering of the second material.

[0045] This design enables the dispensing and mixing device to achieve independent control, precise metering, and efficient mixing of two material streams. In practical applications, the device can flexibly adjust the flow rate and ratio of the two materials according to production needs, thereby meeting the dispensing requirements of different products. Simultaneously, the dual-valve configuration and the precise control of the gear pump and flow meter improve the system's reliability and stability, providing a strong guarantee for efficient factory production.

[0046] To enable automated operation of the electronic closed-mold metering and dispensing device, a PLC control module is installed inside the control box 3; the control box 3 is equipped with a display screen and control buttons.

[0047] The PLC control module, as the control element of the entire device, is responsible for controlling the mixing process. Based on the PLC's control logic capabilities and stability, it ensures precise operation during the dispensing process.

[0048] The control box 3 in this embodiment is equipped with a high-resolution display screen and intuitive control buttons. The display screen, as an important human-machine interface, can display key parameters such as flow rate and operating status in real time, allowing operators to clearly grasp the dynamics of the entire dispensing process. The control buttons allow operators to adjust various parameters according to actual needs, achieving flexible control of the dispensing process and meeting the mixing requirements of the RTM process for resin and curing agent.

[0049] The PLC control module communicates with the display screen, control buttons, and key components of the dispensing device via communication technology. It is also connected to power components such as the agitator, first gear pump 9, and second gear pump 13, enabling precise control of their start / stop and speed to ensure uniform material mixing and stable flow during the dispensing process. Furthermore, the PLC connects to valve components such as the first solenoid three-way valve 7 and the second solenoid three-way valve 11, allowing for flexible switching and precise metering of the dispensing path through precise valve control.

[0050] In this embodiment, the PLC control module is also closely connected to the first flow meter 10 and the second flow meter 14 to acquire real-time material flow information through the pipeline. This information is displayed intuitively to the operators on the screen, enabling them to adjust the dispensing amount in a timely manner according to actual needs, ensuring the stability and consistency of product quality.

[0051] In terms of control logic, the PLC control module can intelligently adjust the working status of each component based on the instructions input by the operator through the control buttons and the real-time flow information fed back by the flow meter, thereby achieving automated and precise control of the dispensing process. Simultaneously, the PLC also possesses powerful self-diagnostic capabilities, enabling it to quickly locate the problem when a fault occurs and issue an alarm to prompt the operator to handle it promptly, ensuring the safe and reliable operation of the entire dispensing unit.

[0052] To monitor the status of the first storage tank 4 and the second storage tank 5, a first liquid level sensor 15 and a first temperature sensor 16 are installed on the first storage tank 4; a second liquid level sensor 17 and a second temperature sensor 18 are installed on the second storage tank 5. The temperature sensor acquires the temperature information inside the storage tank, and the liquid level sensor acquires the liquid level information inside the storage tank.

[0053] In order to obtain the operating pressure information of the system and control the pressure information to ensure that the system meets the requirements of the unsaturated polyester resin RTM process, a first pressure sensor 19 is installed on the pipeline between the first gear pump 9 and the first pneumatic three-way valve 8. A second pressure sensor 20 is installed on the pipeline between the second gear pump 13 and the second pneumatic three-way valve 12. A third pressure sensor is installed on the glue mixing tank 6.

[0054] The PLC control module can be connected to the first pressure sensor 19, the second pressure sensor 20, the third pressure sensor, the first gear pump 9, the second gear pump 13, the first flow meter 10, the second flow meter 14, the first pneumatic three-way valve 8, the second pneumatic three-way valve 12, and the agitator. The PLC control module acquires the liquid level and temperature information of the first storage tank 4 and the second storage tank 5; the PLC control module also acquires the flow information of the pipeline where the first storage tank 4 is located and the pipeline where the second storage tank 5 is located; the PLC control module also acquires the pressure information of the agitator; based on the acquired information and the preset unsaturated polyester resin preparation process, the PLC control module controls the operation of the first gear pump 9, the second gear pump 13, the first pneumatic three-way valve 8, the second pneumatic three-way valve 12, and the agitator, respectively.

[0055] As can be seen from the above-described electronic closed-mold metering and dispensing device, in this embodiment, the first storage tank 4 and the second storage tank 5 serve as raw material storage devices, storing the two components of unsaturated polyester resin respectively. Each storage tank is equipped with a level sensor to detect the liquid level and a temperature sensor to detect the temperature of the raw materials. The first gear pump 9 and the second gear pump 13 serve as a conveying system, drawing the raw materials from the first storage tank 4 and the second storage tank 5 and conveying them quantitatively and accurately. The flow rate can be measured by the first flow meter 10 and the second flow meter 14. The first flow meter 10 and the second flow meter 14 feed the monitoring data back to the PLC control module, which displays the relevant data for operator use. Based on the current system operating status, the operator controls the speed of the gear pumps to achieve precise quantitative and proportional conveying of raw materials.

[0056] Optionally, the first gear pump 9 and the second gear pump 13 are used in conjunction with pressure sensors to monitor the pipeline delivery pressure, so that operators can be informed of the pressure information and control the operation of the system to ensure that the pipeline pressure is maintained within a safe range.

[0057] Operators can control the PLC control module to direct the glue that meets the process requirements through the first flow meter 10 and the second flow meter 14 to the first pneumatic three-way valve 8 and the second pneumatic three-way valve 12. The pneumatic three-way valves can be manually controlled by the PLC control module or automatically controlled, and can be selected in two modes: internal circulation self-check and working glue dispensing. In the internal circulation mode, the raw materials are transported back into the tank. The closed-loop control can more accurately achieve the accuracy of the ratio and flow rate.

[0058] In this embodiment, the raw materials in the dispensing mode reach the agitator through the first electromagnetic three-way valve 7 and the second electromagnetic three-way valve 11. The first electromagnetic three-way valve 7 and the second electromagnetic three-way valve 11 are used to control the accuracy of the raw material ratio and flow rate.

[0059] The mixer uniformly mixes two or more raw materials flowing through it. The shearing and uninterrupted nature of the mixer ensures the uniformity and efficiency of the mixing of raw materials.

[0060] The glue mixing tank 6 is equipped with a third pressure sensor. The fully mixed glue can be monitored and the injection pressure can be fed back in real time during injection in the closed mold. The operator can control and adjust the overall flow meter pressure output of the system through the feedback injection pressure to ensure the stability of injection.

[0061] In this invention, the PLC control module includes: a DP / PA coupler, a Modbus communication module, an HSC high-speed counter, a DI module, and an analog input module; the PLC control module communicates with the host computer via Ethernet.

[0062] In an electronic closed-mold metering and dispensing device, the specific roles of the DP / PA coupler, Modbus communication module, HSC high-speed counter, DI module, and analog input module in the PLC control module are as follows:

[0063] In closed-mold metering dispensing systems, DP / PA couplers can convert and connect between different bus protocols, enabling the connection of devices and sensors using different communication protocols and ensuring smooth data transmission.

[0064] The Modbus communication module enables the PLC control module to communicate with the equipment, realizing remote monitoring and control functions, and improving the flexibility and scalability of the closed-mold metering and dispensing system.

[0065] The HSC high-speed counter can accurately measure and record changes in physical quantities such as rotation and displacement. In a closed-mold metering injection system, the HSC high-speed counter can monitor key parameters such as the screw speed of the injection molding machine and the number of mold opening and closing times, and display them on a screen to meet the monitoring requirements of operators.

[0066] In this invention, the DI module receives digital input signals from field devices, such as status signals from buttons, switches, and sensors. The DI module is responsible for acquiring various switching signals, such as start / stop buttons and safety door status, to provide the PLC with necessary input information for logical judgment and control decisions.

[0067] Analog input modules can receive and process continuously changing analog signals, such as temperature, pressure, and flow rate. In closed-mold metering dispensing systems, analog input modules can be used to monitor key parameters such as raw material temperature, pressure, and mixing ratios to ensure precise control of the dispensing process. These parameters are crucial for ensuring product quality and stability.

[0068] Optionally, the PLC control module can be a CompactLogix1769-L35E module or an XD3E-24 PLC module.

[0069] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0071] The techniques described herein can be implemented in hardware, software, firmware, or any combination thereof. The various features described, as modules, units, or components, can be implemented together in an integrated logic device or separately as discrete but interoperable logic devices or other hardware devices. In some cases, the various features of an electronic circuit can be implemented as one or more integrated circuit devices, such as integrated circuit chips or chipsets.

[0072] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic closed-mold metering and dispensing device, characterized in that, Includes: a base plate, on which a glue mixing tank and a control box are installed; The glue injection mixing tank is equipped with a first storage tank and a second storage tank; the glue injection mixing tank is located inside the glue injection mixing tank; the glue injection mixing tank is equipped with a stirrer. The first feed end of the glue mixing tank is connected in sequence to the first electromagnetic three-way valve and the first pneumatic three-way valve; The second feed end of the glue mixing tank is connected in sequence to the second electromagnetic three-way valve and the second pneumatic three-way valve. The output end of the first storage tank is connected to the first end of the first pneumatic three-way valve of the glue mixing tank through the first pipeline; the second end of the first pneumatic three-way valve is connected to the first electromagnetic three-way valve. A gear pump and a flow meter are installed on the first pipeline; The output end of the second storage tank is connected to the first end of the second pneumatic three-way valve of the glue mixing tank through the second pipeline; the second end of the second pneumatic three-way valve is connected to the second pneumatic three-way valve. The second pipeline is equipped with a gear pump and a second flow meter; The control box contains a PLC control module; the control box is equipped with a display screen and control buttons. The PLC control module is communicatively connected to the display screen, control buttons, stirrer, first gear pump, second gear pump, first solenoid three-way valve, second solenoid three-way valve, first flow meter, and second flow meter. The display screen shows flow information and controls the operation of the stirrer, first gear pump, second gear pump, first solenoid three-way valve, and second solenoid three-way valve.

2. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, The first liquid level sensor is installed on the first storage tank; A second liquid level sensor is installed on the second storage tank.

3. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, The first storage hopper is also equipped with a first temperature sensor; A second temperature sensor is also installed on the second storage tank.

4. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, A first pressure sensor is installed on the pipeline between the first gear pump and the first pneumatic three-way valve. A second pressure sensor is installed on the pipeline between the second gear pump and the second pneumatic three-way valve.

5. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, A third pressure sensor is installed on the glue mixing tank.

6. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, The bottom of the base plate is equipped with casters.

7. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, The third end of the first pneumatic three-way valve is connected to the first storage tank through the first recovery pipeline; The third end of the second pneumatic three-way valve is connected to the second storage tank via the second recovery pipeline.

8. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, The control box is equipped with a door, a power socket, and a data communication interface.

9. The electronic closed-mold metering and dispensing device according to claim 1, characterized in that, The PLC control module includes: DP / PA coupler, Modbus communication module, HSC high-speed counter, DI module, and analog input module; The PLC control module communicates with the host computer via Ethernet.

10. The electronic closed-mold metering and dispensing device according to claim 9, characterized in that, The PLC control module used is either the CompactLogix1769-L35E module or the XD3E-24 model PLC module.

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