CN118209562A - Membrane flaw check out test set adjusts luminance - Google Patents
Membrane flaw check out test set adjusts luminance Download PDFInfo
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- CN118209562A CN118209562A CN202410626891.5A CN202410626891A CN118209562A CN 118209562 A CN118209562 A CN 118209562A CN 202410626891 A CN202410626891 A CN 202410626891A CN 118209562 A CN118209562 A CN 118209562A
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Abstract
The invention belongs to the technical field of detection, and particularly discloses a dimming film flaw detection device which comprises a detection assembly, a bending assembly, a temperature control system, an upper conveyor belt and a lower conveyor belt. The bending component comprises a plurality of bending rollers which are staggered, and the dimming film is sequentially flattened and continuously routed to each bending roller; the dimming film passes through the bending component and then passes through the detection component. The inside of each bending roller is provided with a heat exchange tube, the heat exchange tubes are connected with a temperature control system, and the temperature control system conveys heat exchange media to each heat exchange tube. The upper conveyor belt and the lower conveyor belt are bent to form a component along the same path as the dimming film, and the upper conveyor belt, the dimming film and the lower conveyor belt are sequentially attached and overlapped in the bent component. By arranging the bending component and the detecting component, the material bending and temperature control are integrated onto the production and detection assembly line, the continuous operation of the production line is not hindered, and the condition of dual functions of temperature and bending stress can be simulated, so that hidden flaws only appear when the materials are subjected to mechanical or temperature stress are disclosed.
Description
Technical Field
The invention belongs to the technical field of detection, and particularly relates to a dimming film flaw detection device.
Background
The dimming film is used as a functional material and widely applied to occasions for intelligently regulating and controlling light rays and protecting privacy, such as building glass, automobile sunshade films and the like. The transportation and handling of the dimming film is often subject to bending in various situations, which requires that the dimming film is often adapted to a certain degree of bending and temperature variation, so that comprehensive and accurate flaw detection during its production is a key ring for ensuring the quality of the final product.
Although existing inspection techniques may discover surface defects of the dimmer film to some extent, such inspection is typically performed at room temperature and without the application of prestressing, which may not reveal hidden flaws that only appear when subjected to mechanical or temperature stresses.
There are many conventional methods of changing the temperature of the light modulation film, in which the heating method includes water bath heating, oven heating, hot plate heating, infrared lamp irradiation, microwave heating, heating roller heating, and the like. The humidity environment of the surface of the film can be changed by water bath heating, and the dimming film is directly contacted with high-temperature liquid, so that the temperature difference is overlarge; the problem of overlarge temperature difference exists in the heating of the oven, the heating of the oven is often carried out in a closed space, the oven is difficult to integrate on a production line, and in addition, hot air in the heating of the oven is easy to cause the bulge of a dimming film; heating plates are suitable for static heating, and are difficult to integrate into a production line; the irradiation of the infrared lamp often causes uneven surface heating, so that the local temperature of the dimming film is too high or too low, and the energy consumption is high; microwave heating also has the condition of uneven heating, and can vibrate and rub molecules of the material, which can affect the performance of the product and often needs to be performed in a closed space; the heating roller heating can be integrated on the assembly line, but the heating roller is in direct contact with the dimming film, and the temperature difference is overlarge and the heating area is too concentrated. And fewer cooling modes are available for the dimming film.
Therefore, the traditional dimming film temperature adjusting mode often has the problems of difficult integration on a production line, uneven heating, overlarge temperature difference, influence on the quality of the dimming film and the like, and is difficult to uniformly and progressively heat the dimming film on the production line, and besides the heating of a heating roller, other heating modes also need to be provided with a special bending mechanism for bending the dimming film so as to simulate the conditions of temperature change and mechanical stress possibly faced by the dimming film at the same time.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a device for detecting defects of a light-adjusting film, which comprises a bending assembly, an upper conveyor belt and a lower conveyor belt, wherein a continuously gradual temperature is formed on the upper conveyor belt and the lower conveyor belt, the light-adjusting film is repeatedly bent back and forth between alternately arranged bending rollers when passing through the bending assembly, and a temperature control system transfers heat or cold to the upper conveyor belt and the lower conveyor belt through the bending rollers while bending, and the upper conveyor belt and the lower conveyor belt exchange heat with the light-adjusting film to perform gentle and uniform heating or cooling on the light-adjusting film, so as to avoid thermal damage to the light-adjusting film.
In order to achieve the above purpose, the invention provides a dimming film flaw detection device, which comprises a detection assembly, a bending assembly, a temperature control system, an upper conveyor belt and a lower conveyor belt. The bending component comprises a plurality of bending rollers which are staggered, the dimming film is sequentially flattened and continuously routed to each bending roller, and the dimming film is alternately bent towards different directions on each bending roller; the dimming film passes through the bending component and then passes through the detection component. The heat exchange tubes are arranged in the bending rollers, and can transfer heat or cold to the surfaces of the bending rollers; the heat exchange pipes of each bending roller are connected with a temperature control system, the temperature control system conveys heat exchange media to each heat exchange pipe, and the heat exchange media after heat exchange return to the temperature control system again. The upper conveyor belt and the lower conveyor belt are bent to form a component along the same path as the dimming film, and the upper conveyor belt, the dimming film and the lower conveyor belt are sequentially attached and overlapped in the bent component.
Further, all heat exchange tubes in the bending assembly are connected end to end and are sequentially connected in series; and the temperature control system conveys the heat exchange medium to the last heat exchange tube by taking the conveying path of the light modulation film as a reference, and the heat exchange medium flows out from the first heat exchange tube and returns to the temperature control system.
Further, an upper rear roller and a lower rear roller are included, and after exiting the bending assembly, the upper conveyor belt approaches the upper rear roller and the lower conveyor belt approaches the lower rear roller. Heat exchange tubes are also arranged in the upper rear roller and the lower rear roller, and after the heat exchange medium flows out from the first heat exchange tube of the bending assembly, the heat exchange medium returns to the temperature control system after passing through the heat exchange tubes of the upper rear roller and the lower rear roller.
Further, a flatness detection roller is arranged beside the bending roller at the foremost end, the flatness detection roller is close to the conveyor belt at the outmost layer, and a gap between the flatness detection roller and the conveyor belt at the outmost layer is smaller than the minimum value among the thicknesses of the upper conveyor belt, the lower conveyor belt and the dimming film; the rotating shaft of the flatness detecting roller is provided with a rotation sensor.
Further, the upper and lower conveyors are each provided with an electrostatic precipitator at a location prior to the path bending assembly.
Further, the detection assembly comprises a camera and a light source, the detection assembly further comprises two detection rollers, the dimming film is flat and continuously passes through the two detection rollers, and the dimming film is bent towards different directions on the two detection rollers; the detection roller is made of transparent materials; the detection roller is provided with a plurality of cameras, the cameras are respectively distributed on the inner side and the outer side of the dimming film, and a light source is arranged on the other side of the dimming film opposite to the cameras.
Further, the light source is two arc light curtains which are respectively positioned at the inner side and the outer side of the dimming film, the camera at the inner side is opposite to the arc light curtain at the outer side, and the camera at the outer side is opposite to the arc light curtain at the inner side.
Further, the detection assembly further comprises an inner swinging mechanism and an outer swinging mechanism, the cameras on the inner sides are all arranged on the inner swinging mechanism, the cameras on the outer sides are all arranged on the outer swinging mechanism, the inner swinging mechanism and the outer swinging mechanism swing reciprocally with the same axis as the detection roller, and the intermittent movement of each camera and the movement of the dimming film at the same angular speed can be controlled.
Further, the quantity of the bending components is a plurality of, the temperature of the heat exchange medium received by the heat exchange tube of each bending component is different, and the dimming film sequentially passes through each bending component and then passes through the detection component for detection.
Further, the front ends of the other bending assemblies except the first bending assembly are provided with an upper preheating roller and a lower preheating roller, the upper conveyor belt is contacted with the dimming film after passing through the upper preheating roller, and the lower conveyor belt is contacted with the dimming film after passing through the lower preheating roller. Heat exchange tubes are also arranged in the upper preheating roller and the lower preheating roller, and heat exchange media are introduced into the heat exchange tubes, so that the upper preheating roller and the lower preheating roller respectively regulate the temperature of the upper conveying belt and the temperature of the lower conveying belt to be closer to the temperature of the dimming film.
Compared with the prior art, the invention has at least the following beneficial effects:
1. When the light-adjusting film passes through the path bending assembly, the light-adjusting film is repeatedly bent back and forth between the bending rollers which are alternately arranged, and when the light-adjusting film is bent, the temperature control system transmits heat or cold to the upper conveyor belt and the lower conveyor belt through the bending rollers, and the upper conveyor belt and the lower conveyor belt exchange heat with the light-adjusting film. When the heat exchange medium just enters the first heat exchange tube, the temperature difference between the temperature and the dimming film before heat exchange is the largest, and after heat exchange in each heat exchange tube, the temperature difference between the temperature flowing out of the last heat exchange tube and the dimming film before heat exchange is the smallest, and the temperature difference gradually increases from front to back by taking the transfer direction of the dimming film as a reference, so that continuously gradual temperature change is formed on the upper conveyor belt and the lower conveyor belt, the dimming film is heated or cooled gently and uniformly, and thermal damage to the dimming film is avoided. In addition, in the process that the dimming film, the upper conveyor belt and the lower conveyor belt are switched back and forth among the bending rollers, the upper conveyor belt and the lower conveyor belt exchange heat with the bending rollers alternately, so that the two sides of the dimming film are heated uniformly.
2. Through setting up upper conveyor belt and lower conveyer belt, can avoid the direct contact of dimming film and crooked roller, change the crooked roller to the local stress of pulling the dimming film into the overall stress between dimming film and the conveyer belt to increased the friction stress between dimming film and the conveyer belt, avoid the excessive concentrated stress to cause the damage to the dimming film; the upper conveyor belt and the lower conveyor belt are used as intermediate media to transfer heat or cold to the dimming film, so that the dimming film is in the heat exchange process at any moment when the path bending assembly is used, and compared with the heat exchange process of only using the heat exchange roller, the heat exchange time is greatly increased, and the heat exchange is more uniform and milder.
3. The heat exchange medium close to the room temperature is contacted with the upper conveyor belt and the lower conveyor belt with larger temperature difference through the upper rear roller and the lower rear roller, so that the temperature difference between the upper conveyor belt and the lower conveyor belt and the room temperature can be greatly reduced, the heat or cold quantity of the heat exchange medium flowing back to the temperature control system can be improved, the partial recovery of the heat or cold quantity is realized, and the energy saving effect is achieved. After heat exchange with the upper rear roller and the lower rear roller, the temperature of the upper conveyor belt and the lower conveyor belt can approach to the room temperature through natural cooling, and the requirement of not damaging the dimming film is met. Further, the technical scheme is combined with the configuration of the plurality of groups of bending assemblies in the second embodiment, so that more functions can be exerted, and the energy-saving effect is more obvious.
4. Through setting up the roughness detection roller and pressing close to outermost conveyer belt, the pivot of roughness detection roller is provided with rotation sensor, can detect whether upper conveyer belt, lower conveyer belt and membrane of adjusting luminance are leveled through detecting the roughness detection roller and take place to rotate, as long as any one of them takes place unusually, can lead to the local thickness increase of three overlapping to contact the roughness detection roller, make the roughness detection roller take place to rotate, and then send alarm signal.
5. The dimming film is sequentially bent towards different directions in the detection assembly, light sources are arranged on the inner side and the outer side respectively for irradiation when the dimming film is bent, and a camera is arranged on the other side of the light sources for image acquisition, so that the defect that the inner side and the outer side are exposed when the dimming film is bent towards different directions can be detected. According to the invention, potential defects are excited by the dual functions of the simulation temperature and the bending stress of the bending component, and then the defects are detected in the bending state by the detection component, so that the possible defects are fully exposed, the detection is comprehensive and accurate, and the omission ratio of the defects is greatly reduced.
6. Through setting up the quantity of crooked subassembly and be a plurality of, the heat exchange medium's that every crooked subassembly's heat exchange tube received temperature is different, and the membrane of adjusting luminance passes through each crooked subassembly in proper order, can simulate the condition that the membrane of adjusting luminance receives the bending stress effect simultaneously under different temperature conditions, and the comprehensive test adjusts luminance the temperature adaptability of membrane.
Drawings
FIG. 1 is a perspective view of a light control film flaw detection apparatus according to an embodiment of the present invention;
FIG. 2 is a perspective view of a light modulation film defect detecting apparatus according to an embodiment of the present invention;
FIG. 3 is a perspective view of a light adjusting film flaw detection device according to an embodiment of the present invention after hiding a conveyor belt and a light adjusting film;
FIG. 4 is a side sectional view of a device for detecting defects of a light adjusting film according to an embodiment of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at A;
FIG. 6 is an internal block diagram of the detection assembly of the present invention;
fig. 7 is a side sectional view of a second embodiment of the present invention.
In the figure: 100-detecting components, 110-cameras, 120-outer swinging mechanisms, 130-detecting rollers, 140-arc-shaped light curtains, 150-inner swinging mechanisms, 200-bending components, 210-bending rollers, 220-heat exchange tubes, 300-upper conveying belts, 400-lower conveying belts, 500-electrostatic precipitators, 600-flatness detecting rollers, 710-upper preheating rollers, 720-lower preheating rollers, 810-upper rear rollers and 820-lower rear rollers.
Detailed Description
In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
In the description of the present embodiment, it should also be noted that the terms "disposed," "connected," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 4, the present embodiment discloses a dimming film flaw detection apparatus including a detection assembly 100, and further including a bending assembly 200, a temperature control system, an upper conveyor 300, and a lower conveyor 400. The bending assembly 200 includes a plurality of bending rolls 210 arranged in a staggered manner, and the dimming film is sequentially flattened and continuously routed to each of the bending rolls 210, and the dimming film is alternately bent toward different directions on each of the bending rolls 210; the light modulation film passes through the bending assembly 200 and then passes through the detecting assembly 100. The inside of each bending roller 210 is provided with a heat exchange tube 220, and the heat exchange tube 220 can transfer heat or cold to the surface of the bending roller 210; the heat exchange tubes 220 of each bending roller 210 are connected with a temperature control system, the temperature control system conveys heat exchange media to each heat exchange tube 220, and the heat exchange media return to the temperature control system again after heat exchange. The upper and lower conveyors 300, 400 bend the assembly 200 in the same path as the dimming film, and the upper and lower conveyors 300, 400 are sequentially laminated in the bending assembly 200. The present embodiment further includes a power roller for driving the transfer of the dimming film, and the power roller may be any one or several rollers in the system, which is not particularly limited herein.
Further, the heat exchange tubes 220 of the bend assembly 200 are connected end-to-end in series. With the transfer path of the light modulation film as a reference, the temperature control system transfers the heat exchange medium to the last heat exchange tube 220, and the heat exchange medium flows out from the first heat exchange tube 220 back to the temperature control system.
When the light modulation film passes through the bending assembly 200, the bending rollers 210 are alternately arranged to repeatedly bend back and forth, and at the same time of bending, the temperature control system transmits heat or cold to the upper conveyor belt 300 and the lower conveyor belt 400 through the bending rollers 210, and the upper conveyor belt 300 and the lower conveyor belt 400 exchange heat with the light modulation film. When the heat exchange medium just enters the first heat exchange tube 220, the temperature difference between the temperature and the dimming film before heat exchange is the largest, and after heat exchange in each heat exchange tube 220, the temperature difference between the temperature flowing out of the last heat exchange tube 220 and the dimming film before heat exchange is the smallest, and the temperature difference gradually increases from front to back by taking the transfer direction of the dimming film as a reference, so that continuous gradual temperature changes are formed on the upper conveyor belt 300 and the lower conveyor belt 400, the dimming film is heated or cooled gently and uniformly, and thermal damage to the dimming film is avoided. In addition, in the process of switching the dimming film, the upper and lower conveyors 300 and 400 back and forth between the bending rolls 210, the upper and lower conveyors 300 and 400 alternately exchange heat with the bending rolls 210, so that both sides of the dimming film are heated uniformly.
By arranging the upper conveyor belt 300 and the lower conveyor belt 400, the dimming film can be prevented from being directly contacted with the bending roller 210, the local stress of the bending roller 210 pulling the dimming film is converted into the integral stress between the dimming film and the conveyor belt, the friction stress between the dimming film and the conveyor belt is increased, and the damage to the dimming film caused by the excessive concentration of the stress is avoided; the upper conveyor belt 300 and the lower conveyor belt 400 serve as an intermediate medium to transfer heat or cold to the dimming film, so that the dimming film is in the heat exchange process at the moment of the path bending assembly 200, and compared with the heat exchange process of only using the heat exchange roller, the heat exchange time is greatly prolonged, and the heat exchange is more uniform and milder.
As a further scheme of this embodiment: also included are upper rear rollers 810 and lower rear rollers 820, and upon exiting the bending assembly 200, the upper conveyor belt 300 approaches the upper rear rollers 810 and the lower conveyor belt 400 approaches the lower rear rollers 820. Heat exchange tubes 220 are also disposed in the upper and lower rear rollers 810 and 820, and after flowing out of the first heat exchange tube 220 of the bending assembly 200, the heat exchange medium passes through the heat exchange tubes 220 of the upper and lower rear rollers 810 and 820 and returns to the temperature control system.
With this solution, a large temperature difference exists between the temperature of the upper and lower conveyors 300 and 400 coming out of the bending assembly 200 and the room temperature, and it is difficult to self-cool to the room temperature, and a large temperature difference occurs when coming into contact with the dimming film next time. The temperature of the heat exchange medium exchanged from the bending assembly 200 is close to the room temperature, and the heat exchange medium close to the room temperature is contacted with the upper conveyor belt 300 and the lower conveyor belt 400 with larger temperature difference through the upper rear roller 810 and the lower rear roller 820, so that the temperature difference between the upper conveyor belt 300 and the lower conveyor belt 400 and the room temperature can be greatly reduced, the heat or cold of the heat exchange medium flowing back to the temperature control system can be improved, the partial recovery of the heat or cold is realized, and the energy saving effect is achieved. After exchanging heat with the upper rear roller 810 and the lower rear roller 820, the temperature of the upper conveyor belt 300 and the lower conveyor belt 400 can approach the room temperature after natural cooling, thereby meeting the requirement of not damaging the dimming film.
As a further scheme of this embodiment: a flatness detecting roller 600 is disposed beside the foremost bending roller 210, the flatness detecting roller 600 is close to the outermost conveyor belt, and a gap between the flatness detecting roller 600 and the outermost conveyor belt is smaller than a minimum value among the thicknesses of the upper conveyor belt 300, the lower conveyor belt 400 and the dimming film; the rotation shaft of the flatness detection roller 600 is provided with a rotation sensor.
By adopting the technical scheme, whether the upper conveyor belt 300, the lower conveyor belt 400 and the dimming film are smooth can be detected by detecting whether the flatness detection roller 600 rotates or not, and the overlapping local thickness of the upper conveyor belt 300, the lower conveyor belt 400 and the dimming film can be increased as long as any one of the upper conveyor belt, the lower conveyor belt 400 and the dimming film is abnormal, so that the flatness detection roller 600 is contacted, the flatness detection roller 600 rotates, and an alarm signal is sent.
As a further scheme of this embodiment: the electrostatic precipitators 500 are respectively disposed at positions of the upper and lower conveyors 300 and 400 in front of the path bending assembly 200, for adsorbing impurities possibly existing on the surfaces of the upper and lower conveyors 300 and 400, avoiding the impurities from interfering with the detection result and even scratching the dimming film.
As a further scheme of this embodiment: referring to fig. 4 to 6, the sensing assembly 100 includes a camera 110 and a light source, the sensing assembly 100 further includes two sensing rolls 130, and a dimming film is smoothly and continuously passed through the two sensing rolls 130, and is bent on the two sensing rolls 130 toward different directions; the detection roller 130 is made of transparent material; the detecting roller 130 is provided with a plurality of cameras 110, the cameras 110 are respectively distributed on the inner side and the outer side of the dimming film, and a light source is arranged on the other side of the dimming film opposite to the cameras 110.
The light modulation film is sequentially bent in different directions in the detection assembly 100, and when the light modulation film is bent, light sources are respectively arranged on the inner side and the outer side for irradiation, and a camera 110 is arranged on the other side of the light sources for image acquisition, so that the defect that the light modulation film is exposed on the inner side and the outer side when the light modulation film is bent towards different directions can be detected. In this embodiment, the dual functions of temperature and bending stress are simulated by the bending component 200 to excite the potential defects, and then the defects are detected by the detecting component 100 in the bending state, so that the possible defects are fully exposed, the detection is comprehensive and accurate, and the omission ratio of the defects is greatly reduced.
Further, the light source is two arc light curtains 140, which are respectively located at the inner side and the outer side of the dimming film, the inner side camera 110 faces the outer side light curtain, and the outer side camera 110 faces the inner side light curtain.
As a further scheme of this embodiment: the detecting assembly 100 further includes an inner swing mechanism 150 and an outer swing mechanism 120, the inner cameras 110 are all mounted on the inner swing mechanism 150, the outer cameras 110 are all mounted on the outer swing mechanism 120, the inner swing mechanism 150 and the outer swing mechanism 120 swing reciprocally with the same axis as the detecting roller 130, and each camera 110 can be controlled to intermittently move with the same angular velocity as the dimming film. By adopting the technical scheme, the camera 110 and the dimming film are relatively static when the image is acquired, and the image acquisition precision is improved.
Example two
Referring to fig. 7, in the present embodiment, the number of bending modules 200 is plural, and the heat exchange medium received by the heat exchange tube 220 of each bending module 200 has a different temperature, and the dimming film sequentially passes through each bending module 200 and then passes through the detecting module 100 for detection. By adopting the technical scheme, the condition that the dimming film is subjected to bending stress under different temperature conditions can be simulated, and the temperature adaptability of the dimming film can be comprehensively tested.
As a further scheme of this embodiment: except for the first bending unit 200, the front ends of the remaining bending units 200 are provided with an upper preheating roller 710 and a lower preheating roller 720, the upper conveyor 300 is contacted with the dimming film after passing through the upper preheating roller 710, and the lower conveyor 400 is contacted with the dimming film after passing through the lower preheating roller 720. Heat exchange tubes 220 are also provided in the upper and lower preheating rollers 710 and 720, and the heat exchange tubes 220 are fed with a heat exchange medium so that the upper and lower preheating rollers 710 and 720 adjust the temperatures of the upper and lower conveyors 300 and 400, respectively, to a temperature close to that of the dimming film.
The heat exchange medium in the upper and lower preheating rolls 710 and 720 may be a high temperature medium or a low temperature medium depending on whether the dimming film to be introduced into the bending assembly 200 is in a high temperature state or a low temperature state, in order to control the temperature difference of the dimming film when the dimming film is first contacted with the upper and lower conveyors 300 and 400, to prevent an excessive temperature difference due to the dimming film reaching the high temperature or the low temperature state after passing through the bending assembly 200 at the front end while the upper and lower conveyors 300 and 400 at the rear end are in a room temperature state or even a low temperature state. The upper and lower conveyors 300 and 400 may be made of heat-resistant materials, and generally can endure abrupt temperatures, so that the temperature difference between the heat exchange medium in the upper and lower preheating rollers 710 and 720 and the dimming film may be large, thereby rapidly adjusting the temperatures of the upper and lower conveyors 300 and 400 to a temperature close to that of the dimming film. Of course, a temperature detector should also be generally provided to detect whether the temperature of the preheated upper and lower conveyors 300 and 400 reaches an acceptable range.
Further, in this embodiment, if one group of heat exchange media introduced by two adjacent groups of bending assemblies 200 is higher than room temperature and the other group is lower than room temperature, the arrangement of the upper rear roller 810 and the lower rear roller 820 in the first embodiment can exert more functions, and the energy saving effect is more obvious. Assuming that the first bending unit 200 heats the light modulation film to a high temperature state and the second bending unit 200 cools the light modulation film to a low temperature state, the light modulation film is in a high temperature state when entering the second bending unit 200, and the upper and lower conveyors 300 and 400 are in a low temperature state after exiting the second bending unit 200, and a large amount of heat exchange between the upper and lower preheating rollers 710 and 720 and the upper and lower conveyors 300 and 400 is required, and the energy consumption is high, even a plurality of sets of upper and lower preheating rollers 710 and 720 are required to complete the heat exchange. If the embodiment is provided with the upper rear roller 810 and the lower rear roller 820 in the first embodiment, part of the cold energy can be transferred to the heat exchange medium by using the upper conveyor belt 300 and the lower conveyor belt 400 in a low temperature state, so that the power of the temperature control system can be reduced, the temperatures of the upper conveyor belt 300 and the lower conveyor belt 400 can be greatly increased, the pressures of the upper preheating roller 710 and the lower preheating roller 720 can be reduced, and the energy consumption of the upper preheating roller 710 and the lower preheating roller 720 can be reduced.
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. Dimming film flaw detection equipment, including detection component (100), its characterized in that: further comprising a bending assembly (200), a temperature control system, an upper conveyor belt (300) and a lower conveyor belt (400); the bending assembly (200) comprises a plurality of bending rollers (210) which are arranged in a staggered manner, the dimming film is sequentially flattened and continuously routed to each bending roller (210), and the dimming film is alternately bent towards different directions on each bending roller (210); the dimming film passes through the bending component (200) and then passes through the detection component (100); a heat exchange tube (220) is arranged inside each bending roller (210), and the heat exchange tube (220) can transfer heat or cold to the surface of the bending roller (210); the heat exchange pipes (220) of the bending rollers (210) are connected with a temperature control system, the temperature control system conveys heat exchange media to the heat exchange pipes (220), and the heat exchange media return to the temperature control system again; the upper conveyor belt (300) and the lower conveyor belt (400) are sequentially laminated and overlapped in the bending assembly (200) through the same path as the dimming film, and the upper conveyor belt (300), the dimming film and the lower conveyor belt (400) are sequentially laminated and overlapped in the bending assembly (200).
2. The dimming film flaw detection apparatus according to claim 1, wherein: each heat exchange tube (220) in the bending assembly (200) is connected end to end and sequentially connected in series; and taking the transmission path of the dimming film as a reference, the temperature control system transmits the heat exchange medium to the last heat exchange tube (220), and the heat exchange medium flows out of the first heat exchange tube (220) and returns to the temperature control system.
3. The dimming film flaw detection apparatus according to claim 2, wherein: further comprising an upper rear roller (810) and a lower rear roller (820), said upper conveyor belt (300) passing over said upper rear roller (810) and said lower conveyor belt (400) passing over said lower rear roller (820) after exiting said curving assembly (200); the heat exchange tubes (220) are also arranged in the upper rear roller (810) and the lower rear roller (820), and after the heat exchange medium flows out from the first heat exchange tube (220) of the bending assembly (200), the heat exchange medium returns to the temperature control system after passing through the heat exchange tubes (220) of the upper rear roller (810) and the lower rear roller (820).
4. The dimming film flaw detection apparatus according to claim 1, wherein: a flatness detection roller (600) is arranged beside the bending roller (210) at the foremost end, the flatness detection roller (600) is close to the conveyor belt at the outmost layer, and the gap between the flatness detection roller and the conveyor belt at the outmost layer is smaller than the minimum value among the thicknesses of the upper conveyor belt (300), the lower conveyor belt (400) and the dimming film; the rotating shaft of the flatness detecting roller (600) is provided with a rotation sensor.
5. The dimming film flaw detection apparatus according to claim 1, wherein: the upper conveyor belt (300) and the lower conveyor belt (400) are each provided with an electrostatic precipitator (500) at a position before passing through the bending assembly (200).
6. The dimming film flaw detection apparatus according to claim 1, wherein: the detection assembly (100) comprises a camera (110) and a light source, the detection assembly (100) further comprises two detection rollers (130), the dimming film is flat and continuously passes through the two detection rollers (130), and the dimming film is bent towards different directions on the two detection rollers (130); the detection roller (130) is made of transparent materials; the detection roller (130) is provided with a plurality of cameras (110), the cameras (110) are distributed on the inner side and the outer side of the dimming film respectively, and the other side, opposite to the dimming film, of the cameras (110) is provided with the light source.
7. The dimming film flaw detection apparatus according to claim 6, wherein: the light source is two arc light curtains (140), is located the inboard and the outside of dimming film respectively, inboard camera (110) just to the outside arc light curtain (140), outside camera (110) just to inboard arc light curtain (140).
8. The dimming film flaw detection apparatus according to claim 6, wherein: the detection assembly (100) further comprises an inner swing mechanism (150) and an outer swing mechanism (120), the cameras (110) on the inner side are all installed on the inner swing mechanism (150), the cameras (110) on the outer side are all installed on the outer swing mechanism (120), the inner swing mechanism (150) and the outer swing mechanism (120) swing reciprocally with the same axis as the detection roller (130), and each camera (110) can be controlled to intermittently move with the dimming film at the same angular speed.
9. The dimming film flaw detection apparatus according to claim 2, wherein: the number of the bending assemblies (200) is multiple, the temperature of the heat exchange medium received by the heat exchange tube (220) of each bending assembly (200) is different, and the dimming film sequentially passes through each bending assembly (200) and then passes through the detection assembly (100) for detection.
10. The dimming film flaw detection apparatus according to claim 9, wherein: the front ends of the rest bending assemblies (200) except the first bending assembly (200) are provided with an upper preheating roller (710) and a lower preheating roller (720), the upper conveyor belt (300) is contacted with the dimming film after passing through the upper preheating roller (710), and the lower conveyor belt (400) is contacted with the dimming film after passing through the lower preheating roller (720); the upper preheating roller (710) and the lower preheating roller (720) are also provided with the heat exchange tube (220), and the heat exchange tube (220) is communicated with a heat exchange medium, so that the upper preheating roller (710) and the lower preheating roller (720) respectively regulate the temperature of the upper conveyor belt (300) and the temperature of the lower conveyor belt (400) to be closer to the temperature of the dimming film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410626891.5A CN118209562A (en) | 2024-05-21 | 2024-05-21 | Membrane flaw check out test set adjusts luminance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410626891.5A CN118209562A (en) | 2024-05-21 | 2024-05-21 | Membrane flaw check out test set adjusts luminance |
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| CN214749483U (en) * | 2020-12-29 | 2021-11-16 | 浙江隐齿丽医学技术有限公司 | Device for testing bending stress relaxation and bending creep of membrane |
| KR20220122088A (en) * | 2021-02-26 | 2022-09-02 | 김관영 | Defect inspection apparatus of bending film |
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2024
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