Full-automatic cavity type positive pressure oven and PLC control system thereof

Abstract

The utility model discloses a full-automatic cavity type positive pressure oven and a PLC control system thereof, and relates to the technical field of full-automatic ovens. The full-automatic cavity type positive pressure oven comprises a cavity, a detachable layering device is arranged in the cavity, the layering device is used for conducting combined configuration on materials of different sizes, a stirring device is fixedly connected to the upper portion of the layering device, an independent temperature and pressure sensor and an execution mechanism are adopted, differentiated regulation and control of different areas of the cavity are achieved, and the temperature and pressure of the cavity can be adjusted. Continuous production is achieved, manual intervention is reduced, potential safety hazards are reduced, automatic upper and lower cabin doors are linked with a PLC, and it is ensured that the positive pressure environment is stable; a safety valve multi-stage protection mechanism reduces accident risks, a layering device and an executing mechanism support rapid disassembly and assembly, various process requirements are met, and materials of different sizes can be conveniently combined and configured.

Description

Technical Field

[0001] This utility model relates to the field of fully automatic oven technology, specifically a fully automatic cavity positive pressure oven and its PLC control system. Background Technology

[0002] Positive pressure ovens are key equipment in modern industry and scientific research. They adopt advanced sealing and pressure control systems, which can make the internal pressure higher than the external pressure, effectively preventing dust and impurities from entering and ensuring a pure baking environment. Combined with intelligent temperature control technology, the temperature control is precise, providing a solid guarantee for product quality and performance, and driving modern industry to continuously move towards higher quality.

[0003] Existing industrial ovens mostly have heating and pressurization functions. They are required in processes such as polarizer bonding to LCD glass, ITO film bonding to glass, 3D glass lamination, electronic component curing, and FPC pressing. However, existing industrial ovens have separate temperature and pressure regulation, lacking real-time data monitoring and fault traceability capabilities, resulting in insufficient process consistency. Furthermore, existing industrial ovens are not convenient for combining and configuring materials of different sizes. To address the shortcomings of existing technologies, this invention provides a fully automatic cavity-type positive pressure oven and its PLC control system to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fully automatic cavity-type positive pressure oven and its PLC control system, which solves the problems of separate temperature and pressure regulation in industrial ovens, lack of real-time data monitoring and fault tracing capabilities, resulting in insufficient process consistency and inconvenience in combining and configuring materials of different sizes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic cavity-type positive pressure oven, comprising a cavity, wherein a detachable layering device is provided inside the cavity for combining and configuring materials of different sizes, a stirring device is fixedly connected above the layering device for rapidly circulating hot air, a temperature sensor and a pressure sensor are provided in the cavity, an automatic upper and lower door is provided outside the cavity for sealing and locking and for rapidly opening and closing the cavity, and a main pressure relief valve is provided at the top of the cavity.

[0006] Preferably, a resistance heating device is provided at the top of the cavity, and the resistance heating device is used to heat the cavity.

[0007] Preferably, a top cover seal is fixedly connected to the top of the cavity, and a bottom connector is fixedly connected to the bottom of the cavity.

[0008] Preferably, a sealing unit is provided in the cavity near the layering device.

[0009] Preferably, a secondary pressure relief valve is provided at the top of the cavity near the main pressure relief valve.

[0010] Preferably, the system includes a PLC control system, wherein the temperature sensor and pressure sensor are connected to the PLC control system, a host computer and a barcode scanner are connected to the PLC control system, a human-machine interface is connected to the PLC control system, a temperature control device and a pressure control device are connected to the PLC control system, a barcode scanner and an actuator are connected to the PLC control system, and a redundant PLC self-test device is connected to the PLC control system.

[0011] This utility model discloses a fully automatic cavity-type positive pressure oven and its PLC control system, which has the following beneficial effects: The fully automatic cavity-type positive pressure oven and its PLC control system adopt independent temperature and pressure sensors and actuators to achieve differentiated control of different areas of the cavity, improve processing uniformity, and enable continuous production by coordinating the return material production line and the loading and unloading modules, thereby reducing manual intervention and safety hazards. The automatic loading and unloading doors are linked with the PLC to ensure a stable positive pressure environment. The multi-level protection mechanism of the safety valve reduces the risk of accidents, and the layering device and actuator support quick disassembly and assembly, adapting to various process requirements and facilitating the combination and configuration of materials of different sizes. Attached Figure Description

[0012] 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 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the system architecture of this utility model;

[0015] Figure 3 This is a schematic diagram of the actuator of this utility model;

[0016] Figure 4 This is a schematic diagram of the safety valve linkage protection of this utility model;

[0017] Figure 5 This is a schematic diagram of the temperature and pressure control logic of this utility model.

[0018] In the diagram: 100, PLC control system; 101, redundant PLC self-testing device; 102, drive hatch; 103, human-machine interface; 104, host computer; 105, actuator; 106, temperature control device; 107, pressure control device; 108, barcode scanner; 200, cavity; 201, temperature sensor; 202, top cover seal; 203, main pressure relief valve; 204, auxiliary pressure relief valve; 205, resistance heating device; 206, bottom connector; 207, stirring device; 208, pressure sensor; 209, stratification device; 210, sealing unit; 211, automatic hatch. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] This application provides a fully automatic cavity-type positive pressure oven and its PLC control system, which solves the problems of separate temperature and pressure regulation in industrial ovens, lack of real-time data monitoring and fault tracing capabilities, resulting in insufficient process consistency and inconvenience in combining and configuring materials of different sizes. It achieves differentiated control of different areas of the cavity 200 by using independent temperature and pressure sensors and actuators 105, improving processing uniformity. The return material assembly line and loading / unloading modules work together to achieve continuous production, reducing manual intervention and safety hazards. Automatic loading / unloading doors 211 are linked with the PLC to ensure a stable positive pressure environment. A multi-level safety valve protection mechanism reduces accident risks. The layering device 209 and actuators 105 support quick assembly and disassembly, adapting to various process requirements and facilitating the combination and configuration of materials of different sizes.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] Example 1;

[0023] This utility model discloses a fully automatic cavity-type positive pressure oven and its PLC control system, according to the appendix. Figure 1-5As shown, the device includes a cavity 200, inside which is a detachable layering device 209. The surface of the layering device 209 is coated with a high-temperature resistant coating, supporting a combination of vertical layering and horizontal partitioning. The detachable layering structure supports quick changeover, adapting to materials of different sizes, reducing equipment downtime, and each layer is equipped with a single temperature sensor 201 to record the temperature. The layering device 209 is used to combine and configure materials of different sizes. A stirring device 207 is fixedly connected above the layering device 209, which is used for rapid circulation of hot air. The cavity 200 is equipped with a temperature sensor 201 and a pressure sensor 208. An automatic upper and lower hatch 211 is provided on the outside of the cavity 200, which is used for sealing and locking and for quick opening and closing of the cavity 200. A main pressure relief valve 203 is provided on the top of the cavity 200.

[0024] The system includes a PLC control system 100, a temperature sensor 201, and a pressure sensor 208 connected to the PLC control system 100. A host computer 104 and a barcode scanner 108 are connected to the PLC control system 100. A human-machine interface 103 is also connected to the PLC control system 100. A temperature control device 106 and a pressure control device 107 are connected to the PLC control system 106. The temperature control device 106 uses a PID+SSR control method and records and displays a heating curve. The temperature curve of the cavity 200 is automatically generated and can be downloaded. Heating... The slope is adjustable. The PLC control system 100 is connected to a barcode scanner 108 and an actuator 105. The host computer 104 scans the barcode of the material fixture through the barcode scanner 108 to bind the material fixture code. The curing temperature curve can be queried through the fixture code later. The data is stored for 30 days. It communicates with the PLC control system 100 and stores data such as temperature, pressure and time during the baking process for easy traceability. It outputs the equipment operation data to the MES system in real time. The PLC control system 100 is connected to a redundant PLC self-test device 101 and a drive door 102.

[0025] Example 2;

[0026] This utility model discloses a fully automatic cavity-type positive pressure oven and its PLC control system, according to the appendix. Figure 1-5As shown, the device includes a cavity 200, inside which is a detachable layering device 209. The surface of the layering device 209 is coated with a high-temperature resistant coating, supporting a combination of vertical layering and horizontal partitioning. The detachable layering structure supports quick changeover, adapting to materials of different sizes, reducing equipment downtime, and each layer is equipped with a single temperature sensor 201 to record the temperature. The layering device 209 is used to combine and configure materials of different sizes. A stirring device 207 is fixedly connected above the layering device 209, which is used for rapid circulation of hot air. The cavity 200 is equipped with a temperature sensor 201 and a pressure sensor 208. An automatic upper and lower hatch 211 is provided on the outside of the cavity 200, which is used for sealing and locking and for quick opening and closing of the cavity 200. A main pressure relief valve 203 is provided on the top of the cavity 200.

[0027] A resistance heating device 205 is provided on the top of the cavity 200, which is used to heat the cavity 200.

[0028] A top cover seal 202 is fixedly connected to the top of the cavity 200, and a bottom connector 206 is fixedly connected to the bottom of the cavity 200.

[0029] A sealing unit 210 is provided in the cavity 200 near the layering device 209.

[0030] A secondary pressure relief valve 204 is located at the top of the cavity 200 near the main pressure relief valve 203.

[0031] The PLC control system 100 receives signals from the temperature sensor 201 and the pressure sensor 208, and dynamically adjusts the power of the temperature control device 106, the intensity of the pressure control device 107, and the speed of the stirring device 207 through a PID algorithm to achieve closed-loop control. The cavity 200 adopts a double-layer pressure-resistant stainless steel structure and has a built-in detachable layered device 209, which supports independent control of multiple stations. Pneumatic actuators drive the automatic upper and lower doors 211. When closed, the silicone sealing ring forms an air seal with the cavity 200. The temperature control device 106 adopts a combined mode of resistance heating device 205 and hot air circulation, which works with the stirring device 207 to distribute heat evenly. The pressure control device 107 is a variable frequency screw air compressor, which responds to the instructions of the PLC control system 100 to achieve pressure gradient control. The return material flow line is linked with the automatic loading and unloading module. The positioning accuracy of the carrier is driven by a servo motor. The safety valve linkage protection device includes a main pressure relief valve 203 and a secondary pressure relief valve 204. When there is pressure in the cavity 200, the automatic upper and lower doors 211 cannot be opened.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fully automatic cavity type positive pressure oven comprising a cavity (200), characterized in that, The cavity (200) is equipped with a detachable layering device (209), which is used to combine and configure materials of different sizes. A stirring device (207) is fixedly connected above the layering device (209), which is used to quickly circulate hot air. The cavity (200) is equipped with a temperature sensor (201) and a pressure sensor (208). An automatic upper and lower hatch (211) is provided outside the cavity (200), which is used to seal and lock and quickly open and close the cavity (200). A main pressure relief valve (203) is provided on the top of the cavity (200).

2. The full automatic cavity type positive pressure oven according to claim 1, wherein, A resistance heating device (205) is provided on the top of the cavity (200), and the resistance heating device (205) is used to heat the cavity (200).

3. The full automatic cavity type positive pressure oven according to claim 2, characterized in that, The top of the cavity (200) is fixedly connected to a top cover seal (202), and the bottom of the cavity (200) is fixedly connected to a bottom connector (206).

4. The full automatic cavity type positive pressure oven according to claim 1, wherein, A sealing unit (210) is provided in the cavity (200) near the layering device (209).

5. The full automatic cavity type positive pressure oven according to claim 1, wherein, A secondary pressure relief valve (204) is provided at the top of the cavity (200) near the main pressure relief valve (203).

6. A PLC control system for controlling the fully automatic cavity-type positive pressure oven according to any one of claims 1 to 5, characterized in that, The system includes a PLC control system (100), a temperature sensor (201) and a pressure sensor (208) connected to the PLC control system (100), a host computer (104) and a barcode scanner (108) connected to the PLC control system (100), a human-machine interface (103) connected to the PLC control system (100), a temperature control device (106) and a pressure control device (107) connected to the PLC control system (100), a barcode scanner (108) and an actuator (105) connected to the PLC control system (100), and a redundant PLC self-test device (101) and a drive door (102) connected to the PLC control system (100).

Images