Constant-temperature corona rack

Abstract

The utility model relates to a constant temperature corona machine frame which specifically comprises a machine frame, the machine frame comprises an air inlet, an air outlet and a corona roller opening, the air inlet is arranged at one end of the machine frame, the air outlet is arranged at the other end of the machine frame, and the corona roller opening is arranged at the bottom of the machine frame; a corona electrode is arranged right above the corona roller opening, and a high-voltage insulator is arranged above the corona electrode; the refrigerating device comprises a condenser, a compressor, a throttling component and an evaporator, and the evaporator is arranged at the tail end of the air inlet; and the drying device is arranged at the front end of the air inlet. The corona machine has the characteristics that the air cooling effect is good, the environment in the corona machine frame is kept dry and clean, the service life of the corona machine is long, the corona effect is good, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of corona machines, in particular to a constant temperature corona machine frame. Background Art

[0002] The corona machine is mainly used for surface corona treatment of metal foil, plastic film, silicone rubber, paper, composite film and other materials. Before the above materials are processed by ink printing, laminating, film blowing, coating, gluing, material modification, grafting, polymerization, coating, casting, pasting, etc., in order to make the surface of the product have stronger adhesion (i.e., higher dyne coefficient) and prevent the raw materials from having printing color loss, loose composite pasting, uneven coating leakage and other phenomena during the production process, which affect the product quality, corona impact treatment must be carried out first to enhance its surface dyne coefficient. Therefore, the corona machine is an important pre-treatment equipment for film materials. The corona effect of the corona machine seriously affects the subsequent processing of the film materials, and the corona effect of the corona machine is closely related to the working state of the internal electrode.

[0003] However, the electrode part of the corona machine currently on the market is in a relatively harsh environment during corona operation, and the temperature of the electrode part rises due to continuous corona discharge. The temperature change of the electrode part will cause the thermal expansion and contraction effect of the motor pole, resulting in uneven discharge gap and inconsistency in hot and cold states. The higher corona temperature and the changing discharge gap will affect the treatment quality of the treated object. Due to the harsh working environment of the corona machine, condensation may occur inside the electrode frame after shutdown, resulting in a decrease in the breakdown strength of the insulating medium. Starting the machine at this time is likely to cause damage to expensive power devices. Moreover, when the electrode frame is started in a cold state, the corona machine is often required to preheat at low power for one or two hours, affecting production efficiency. Utility Model Content

[0004] The purpose of the present application is to solve the deficiencies of the prior art and to provide a constant temperature corona machine frame capable of maintaining a stable temperature of the internal electrodes during the corona process.

[0005] The constant temperature corona machine frame designed in the present application comprises: a frame, the frame comprising an air inlet, an air outlet and a corona roller opening, the air inlet is arranged at one end of the frame, the air outlet is arranged at the other end of the frame, and the corona roller opening is arranged at the bottom of the frame; a corona electrode is arranged just above the corona roller opening, and a high voltage insulator is connected above the corona electrode;

[0006] A refrigeration device comprises a condenser, a compressor, a throttling component, a fan and an evaporator. The evaporator is arranged at the air inlet, and the air is directly blown toward the corona electrode after being cooled by the evaporator.

[0007] More specifically, it also includes a drying device, which is arranged at the front end of the air inlet and is a drying filter.

[0008] More specifically, a baffle is provided above the opening of the corona roller, the baffle is located on a side of the corona electrode close to the air inlet, and the baffle is used to adjust the wind direction.

[0009] More specifically, the baffle is a telescopic plate.

[0010] More specifically, an air outlet is formed between the baffle and the frame, and the air outlet is smaller than the air inlet.

[0011] More specifically, a humidity sensor is also provided in the frame, and the humidity sensor is used to sense the humidity inside the corona frame.

[0012] More specifically, a temperature sensor is also provided in the frame, and the temperature sensor is used to sense the temperature of the corona electrode.

[0013] More specifically, the rack is a U-shaped rack.

[0014] More specifically, an exhaust fan is provided at the air outlet.

[0015] More specifically, the corona electrode is arc-shaped and corresponds to the opening of the corona roller. More specifically, an exhaust fan is provided at the air outlet.

[0016] The utility model has the beneficial effects of: designing a corona machine frame arranged in a corona machine, an active refrigeration device is arranged at one end of the corona machine frame, and the refrigeration device is used to cool the surrounding air, the air enters from the air inlet of the frame, and after drying, filtering and cooling, the corona electrode at the bottom of the frame is cooled, and then discharged from the other end of the frame. The active refrigeration device in the corona machine frame can dynamically adjust the internal temperature, and the corona machine can maintain a suitable constant temperature when working. The overall structure of the frame has a high space utilization rate and a small area. The air cooling effect in the corona machine is good, the environment in the corona machine frame is kept dry and clean, the corona machine has a long service life, and the corona effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the constant temperature corona rack in this application.

[0018] In the figure: 1. Condenser; 2. Throttling component; 3. Compressor; 4. Fan; 5. Filter; 6. Evaporator; 7. Frame; 8. Baffle; 9. High-voltage insulator; 10. Corona electrode; 11. Corona roller mouth; 12. Exhaust fan. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1 As shown, the constant temperature corona machine frame designed in the present application includes a frame 7, wherein the frame 7 includes an air inlet, an air outlet and a corona roller port 11. There are two ports on the left and right sides of the frame 7, the air inlet is arranged at one end of the frame 7, the air outlet is arranged at the other end of the frame 7, and the corona roller port 11 is arranged at the bottom of the frame 7. A corona electrode 10 is arranged just above the corona roller port 11, and the corona electrode 10 is a ring corresponding to the corona roller port 11, and a high-voltage insulator 9 is connected above it.

[0023] A refrigeration device is provided on one side of the frame 7, and the refrigeration device includes a condenser 1, a compressor 3, a throttling component 2, a fan 4 and an evaporator 6, and the evaporator 6 is arranged at the end of the air inlet. The refrigeration device is assembled according to the frame structure of four major refrigeration components available on the market, and is used to cool the air in the corona frame. Since the corona electrode 10 of the corona machine requires a large current, a large amount of heat will be generated during operation, and the internal temperature of the corona machine rises quickly. Excessive temperature may damage the corona electrode 10, and may also damage the film material on the surface of the corona roller. Therefore, the evaporator 6 is directly designed near the corona electrode, and the evaporator 6 actively cools the incoming air, and the air with a lower temperature directly cools the corona electrode 10.

[0024] A drying device is installed at the air inlet of the frame 7. The drying device can filter the water molecules in the air in advance, and can also filter out impurities such as dust in the air in advance, reduce the accumulation of dust and lint in the corona frame, and help improve the overall service life of the corona machine. The drying device can be a drying filter 5, or a combination of drying filter elements. The other side of the frame 7 is an air outlet. Air enters from the air inlet after drying and filtering by the drying device, and forms cold air after cooling by the evaporator 6 of the refrigeration device. The cold air flows through the corona electrode 10, cools the corona electrode 10 and the frame 7 as a whole, and then blows out from the air outlet. The air outlet can be provided with an exhaust fan 12. The air passing through the filter 5 and the evaporator 6 is a cooling air with a lower saturation. On the one hand, it can absorb the high temperature in the electrode cavity, and on the other hand, it can take away the higher moisture in the internal air, especially when the corona machine is in a humid and rainy season during the stop of operation, the air circulation in the corona machine is not smooth, and humid air is easily accumulated. When the corona machine is running, the low-temperature cooling air can keep the electrode in a relatively stable state for a long time, the discharge area maintains a relatively stable temperature, and it operates at a constant temperature to avoid the temperature from continuing to rise and becoming difficult to control. All of these are conducive to improving the quality of corona.

[0025] In some embodiments, the corona machine frame 7 is configured as a U-shaped frame, which has a higher space utilization rate, and the cables can be directly hidden in the middle of the U-shape, where the cables are connected to the corona electrode 10. The configuration of the corona machine frame 7 can also be adjusted according to the internal structure and external space of the corona machine.

[0026] In some embodiments, baffle plate 8 is also provided in corona machine frame 7, and baffle plate 8 is used to adjust wind direction. The electrode of corona machine is in a continuous heating state when working, but if the electrode bottom is directly cooled down under this state, the high-voltage insulator 9 may affect the corona quality of the electrode, so cooling should be cooling down the electrode surrounding environment, and the electrode itself should not be directly cooled down. The setting of baffle plate 8 is conducive to adjusting wind direction and ensuring the corona quality of corona machine. Wherein baffle plate 8 can be set to telescopic plate or folding plate, and the user can adjust the length and inclination angle of baffle plate 8 according to the actual wind force size and actual cooling demand, and controlling reasonable cooling rate is the guarantee of normal operation of corona machine. Preferably, baffle plate 8 is extended so that the gap (air outlet) between baffle plate 8 and frame 7 is smaller than the air inlet of frame, increasing the flow rate of cold air, and also can make cold air guide to blow corona electrode 10, strengthening the effect of temperature regulation. Baffle plate 8 can also be set to wavy baffle plate to increase the uniformity of cold air.

[0027] In certain embodiments, a temperature sensor and a humidity sensor are also provided in the frame 7. The temperature sensor is used to sense the temperature of the internal corona electrode 10 in real time. When the temperature is too high, an alarm is generated. The temperature sensor is also connected to a refrigeration device. The refrigeration device can automatically adjust the refrigeration effect according to the feedback of the temperature sensor to maintain the temperature stability in the corona frame. After the corona machine is shut down for a long time, condensation may occur inside the corona frame, and internal moisture condenses to form a humid environment. When the corona machine is started next time, if the internal humidity is large, the transient current generated by the start-up may produce breakdown and damage the internal power device. Therefore, the internal humidity sensor is conducive to early warning, and before starting, it is judged whether it is suitable for starting according to the feedback of the humidity sensor. If the internal humidity is large and is not suitable for starting, then the refrigeration device and the exhaust fan 12 can be opened for 15min, and the humid air in the frame is continuously replaced by dry air, and the start-up work is carried out again after the internal humidity of the frame is reduced. After the corona machine operation is completed, the refrigeration device and the exhaust fan 12 can also be kept working for 1 hour, which is conducive to accelerating the temperature drop, preventing the residual heat from damaging the internal equipment parts of the rack, and reducing the occurrence of condensation inside the corona machine rack after shutdown. The exhaust process before and after startup can automatically set the running time by adding a PLC control program.

[0028] The embodiments of the present invention are described in detail above, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A constant temperature corona machine frame, characterized in that: include: A frame (7), the frame (7) comprising an air inlet, an air outlet and a corona roller opening (11), the air inlet being arranged at one end of the frame (7), the air outlet being arranged at the other end of the frame (7), and the corona roller opening (11) being arranged at the bottom of the frame (7); a corona electrode (10) being arranged directly above the corona roller opening (11), and a high-voltage insulator (9) being connected above the corona electrode; A refrigeration device, comprising a condenser (1), a compressor (3), a throttling component (2), a fan (4) and an evaporator (6), wherein the evaporator (6) is arranged at the air inlet, and the air is directly blown toward the corona electrode (10) after being cooled by the evaporator.

2. The constant temperature corona machine frame according to claim 1, characterized in that: It also includes a drying device, which is arranged at the front end of the air inlet and is a drying filter (5).

3. The constant temperature corona machine frame according to claim 1, characterized in that: A baffle (8) is provided above the corona roller opening (11); the baffle (8) is located on a side of the corona electrode (10) close to the air inlet; the baffle (8) is used to adjust the wind direction.

4. The constant temperature corona machine frame according to claim 3, characterized in that: The baffle (8) is a telescopic plate.

5. The constant temperature corona machine frame according to claim 3, characterized in that: An air blowing port is formed between the baffle plate (8) and the frame (7), and the air blowing port is smaller than the air inlet.

6. The constant temperature corona machine frame according to claim 1, characterized in that: A humidity sensor is also provided inside the frame (7), and the humidity sensor is used to sense the humidity inside the corona frame.

7. The constant temperature corona machine frame according to claim 1, characterized in that: A temperature sensor is also arranged in the frame (7), and the temperature sensor is used to sense the temperature of the corona electrode.

8. The constant temperature corona machine frame according to claim 1, characterized in that: The frame (7) is a U-shaped frame.

9. The constant temperature corona machine frame according to claim 1, characterized in that: An exhaust fan (12) is provided at the air outlet.

10. The constant temperature corona machine frame according to claim 1, characterized in that: The corona electrode (10) is arc-shaped and corresponds to the opening (11) of the corona roller.

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