A composite film quality on-line monitoring device based on multispectral imaging

Abstract

A kind of composite film quality on-line monitoring device based on multispectral imaging belongs to composite film monitoring device field, its structure includes monitoring rack, monitoring platform, guide membrane frame, output frame, the upper portion of the front end surface of the monitoring rack is provided with illumination assembly, the middle part of the monitoring rack is provided with composite film input, at least vertical one identification component is arranged on the upper end of the monitoring rack;The monitoring platform is located in the lower part of the front end surface of monitoring rack, the top surface of the monitoring platform is provided with flexible mechanics performance test mechanism, composite film quality on-line monitoring device is set with flexible mechanics performance test mechanism on monitoring platform, can be synchronized with production line operation, after composite film static monitoring, compression force and tension are quickly applied, under the cooperation of identification component, real-time obtains the mechanical parameter such as tensile strength, wrinkle resistance strength, elongation at break of composite film, compared with prior art, it is also beneficial to the compact layout of production line.

Description

Technical Field

[0001] This invention is an online monitoring device for composite membrane quality based on multispectral imaging, belonging to the field of composite membrane monitoring devices. Background Technology

[0002] Composite membranes are multilayer thin film structures made of two or more different materials through processes such as lamination, co-extrusion, and coating. They combine the performance advantages of each component material and are widely used in packaging, environmental protection, water treatment, building waterproofing, and many other fields.

[0003] Existing online quality monitoring devices for composite membranes not only monitor static data such as surface defects and thickness uniformity, but also monitor the mechanical properties of the composite membrane under stress. The stress on the composite membrane is achieved by using a universal testing machine or a dedicated tensile testing machine installed outside the device to stretch or wrinkle the composite membrane. The external equipment requires a separate installation area, which is not conducive to the compact layout of the production line and can easily affect the continuity of monitoring work. In particular, when switching between stretching and wrinkling the composite membrane, the stress method needs to be changed and the composite membrane needs to be repositioned. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an online quality monitoring device for composite films based on multispectral imaging. This addresses the problem that existing online quality monitoring devices for composite films, in addition to monitoring static data such as surface defects and thickness uniformity, also monitor the mechanical properties of the composite film under stress. The stress on the composite film is assessed by stretching or wrinkling the composite film using a universal testing machine or a dedicated tensile testing machine installed outside the device. This external equipment requires a separate installation area, which is not conducive to compact production line layout and can easily affect the continuity of monitoring work. In particular, there is the problem of switching between stretching and wrinkling of the composite film, changing the stress mode, and repositioning the composite film.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online monitoring device for composite membrane quality based on multispectral imaging, comprising a monitoring frame, a monitoring platform, a membrane guide frame, and an output frame. An illumination component is provided on the upper part of the front face of the monitoring frame, a composite membrane input port is provided in the middle of the monitoring frame, and at least one identification component is vertically provided on the upper end of the monitoring frame. The monitoring platform is located below the front face of the monitoring frame, and a flexible mechanical performance testing mechanism is provided on the top surface of the monitoring platform to flexibly wrinkle or stretch the composite membrane during the monitoring process. The membrane guide frame is located on the rear face of the monitoring frame to guide the composite membrane and transport it to the monitoring platform through the composite membrane input port. The output is mounted on the front end of the monitoring platform to guide the monitored composite membrane out. The flexible mechanical performance testing mechanism includes a horizontally arranged sliding groove, two hollow adsorption plates symmetrically arranged in the left and right parts of the sliding groove, and a flexible transmission component fixed in the middle of the sliding groove. The bottom surface of the hollow adsorption plate is provided with an assembly groove, and the top of the flexible transmission component is connected to the two assembly grooves. When the flexible transmission component is in operation, it drives the two hollow adsorption plates to move closer to each other synchronously through the two assembly grooves. The top surface of the hollow adsorption plate is provided with several adsorption micropores, and the bottom of the hollow adsorption plate is connected to an air extraction pipe. A return spring is provided between the end of the hollow adsorption plate away from the flexible transmission component and the inner wall of the sliding groove.

[0006] Furthermore, in order to improve the accuracy of monitoring, the identification component is specifically one of a multispectral imager or a high-speed industrial camera.

[0007] Furthermore, in order to monitor the composite membrane on the monitoring platform, the identification end of the identification component faces the monitoring platform.

[0008] Furthermore, in order to enable the hollow adsorption plate to adsorb and position the composite membrane, the monitoring platform is equipped with an air pump connected to the air extraction pipe.

[0009] Furthermore, in order to enable the hollow adsorption plate to move horizontally along its axis, the inner walls of the sliding groove are provided with horizontal positioning rails, and the outer walls of the hollow adsorption plate are provided with sliding positioning grooves that are adapted to the positioning rails.

[0010] Furthermore, in order to flexibly wrinkle or stretch the composite film, the flexible transmission assembly includes a transmission frame fixedly connected to the inner wall of the sliding groove, positioning guide wheels, a strip-shaped sliding hole, an adjusting wheel, an elastic band, and a drive structure. Two positioning guide wheels are provided and symmetrically arranged in the upper part of the transmission frame. The strip-shaped sliding hole is vertically arranged in the middle of the transmission frame. The adjusting wheel is movably arranged in the middle of the transmission frame and is slidably limited and connected to the strip-shaped sliding hole. The middle section of the elastic band passes under the adjusting wheel, and the left and right ends of the elastic band pass over the two positioning guide wheels respectively and are fixedly connected to the two assembly grooves respectively. The drive structure is connected to the bottom of the transmission frame to drive the adjusting wheel to move up and down along the strip-shaped sliding hole.

[0011] Furthermore, in order to convert rotational motion into linear motion and improve the smoothness of the up-and-down movement of the adjusting wheel, the drive structure includes a motor, an adjusting frame, a transmission screw, and a positioning groove fixedly connected to the bottom end of the transmission frame. The output end of the motor faces upward and is connected to the transmission screw. The adjusting frame is connected to the front edge of the adjusting wheel and has a downward-facing internal threaded hole. The transmission screw extends vertically into the transmission frame and is threadedly connected to the adjusting frame through the internal threaded hole. The positioning groove is located on the inner wall of the bottom of the transmission frame and is connected to the adjusting frame to restrict the rotation of the adjusting frame.

[0012] Furthermore, to prevent interference with the transport of the composite membrane, the top surface of the hollow adsorption plate is flush with the top surface of the monitoring platform.

[0013] Furthermore, to prevent interference with the elastic band's pulling action, the adjusting bracket is offset from the elastic band.

[0014] The beneficial effects of this invention are: the online quality monitoring device for composite films adopts a flexible mechanical performance testing mechanism set on the monitoring platform, which can operate synchronously with the production line. After static monitoring of the composite film, it quickly applies compressive and tensile forces. With the cooperation of the identification components, it can obtain mechanical parameters such as tensile strength, wrinkle resistance, and elongation at break of the composite film in real time. Compared with the prior art, it is also conducive to the compact layout of the production line. Attached Figure Description

[0015] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of an online monitoring device for composite membrane quality based on multispectral imaging according to the present invention;

[0017] Figure 2 This is a top-view cross-sectional structural diagram of a flexible mechanical performance testing mechanism.

[0018] Figure 3 This is a three-dimensional structural diagram of a flexible transmission component;

[0019] Figure 4 This is a front view schematic diagram of the flexible transmission component;

[0020] Figure 5 for Figure 4 A schematic diagram of the wrinkled state structure;

[0021] Figure 6 for Figure 5 A detailed enlarged structural diagram of the cross-sectional portion;

[0022] Figure 7 This is a schematic diagram of the hollow adsorption plate.

[0023] In the diagram: Monitoring frame-1, Monitoring platform-2, Membrane guide frame-3, Output frame-4, Lighting assembly-11, Composite membrane input port-12, Identification assembly-13, Flexible mechanical performance testing mechanism-21, Sliding groove-211, Hollow adsorption plate-212, Flexible transmission assembly-213, Assembly groove-214, Adsorption micropores-2121, Air extraction pipe-215, Reset spring-216, Sliding positioning groove-2122, Transmission frame-2131, Positioning guide wheel-2132, Strip-shaped sliding hole-2133, Adjusting wheel-2134, Elastic band-2135, Drive structure-2136, Motor-21361, Adjusting frame-21362, Transmission screw-21363, Positioning groove-21364. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7This invention provides a technical solution for an online quality monitoring device for composite membranes based on multispectral imaging. Its structure includes a monitoring frame 1, a monitoring platform 2, a membrane guide frame 3, and an output frame 4. An illumination component 11 is provided on the upper part of the front face of the monitoring frame 1, and a composite membrane input port 12 is provided in the middle of the monitoring frame 1. At least one identification component 13 is vertically provided on the upper end of the monitoring frame 1. The monitoring platform 2 is located below the front face of the monitoring frame 1, and a flexible mechanical performance testing mechanism 21 is provided on the top surface of the monitoring platform 2 to flexibly wrinkle or stretch the composite membrane during the monitoring process. The membrane guide frame 3 is located on the rear face of the monitoring frame 1 to guide the composite membrane and transport it through the composite membrane input port 12 to the monitoring platform 2. The output frame 4 is located on the front face of the monitoring platform 2 to guide the monitored composite membrane out. The flexible mechanical property testing mechanism 21 includes a horizontally arranged sliding groove 211, two hollow adsorption plates 212 symmetrically arranged in the left and right parts of the sliding groove 211, and a flexible transmission component 213 fixed in the middle of the sliding groove 211. The bottom surface of the hollow adsorption plate 212 is provided with an assembly groove 214. The top of the flexible transmission component 213 is connected to the two assembly grooves 214. When the flexible transmission component 213 is in operation, it synchronously drives the two hollow adsorption plates 212 to move closer to each other through the two assembly grooves 214. The top surface of the hollow adsorption plate 212 is provided with a plurality of adsorption micropores 2121. The bottom of the hollow adsorption plate 212 is connected to an air extraction pipe 215. A return spring 216 is provided between the end of the hollow adsorption plate 212 away from the flexible transmission component 213 and the inner wall of the sliding groove 211.

[0026] The outer wall of the monitoring frame 1 is equipped with a control terminal that receives and analyzes the data from the identification component 13. The control terminal controls the operation of the flexible mechanical performance testing mechanism 21. The lighting component 11 is specifically an LED light panel.

[0027] The online quality monitoring device for composite films uses a flexible mechanical performance testing mechanism 21 set on the monitoring platform 2, which can operate synchronously with the production line. After static monitoring of the composite film, it quickly applies compressive and tensile forces. With the cooperation of the identification component 13, it can obtain mechanical parameters such as tensile strength, wrinkle resistance, and elongation at break of the composite film in real time. Compared with the existing technology, it is also conducive to the compact layout of the production line.

[0028] During operation, the composite membrane, guided by the membrane guide frame 3, is conveyed to the monitoring platform 2 through the composite membrane inlet 12. Then, driven by the external traction device, the composite membrane is output through the output frame 4. When the composite membrane is on the monitoring platform 2, the identification component 13 performs static data monitoring on the composite membrane. When it is necessary to monitor the composite membrane under stress, the two hollow adsorption plates 212, along with the air extraction pipe 215 and the adsorption micropores 2121, adsorb onto the left and right sides of the bottom surface of the composite membrane laid flat on the monitoring platform 2. Then, the flexible transmission component 213 simultaneously pulls the two hollow adsorption plates 212, causing the two hollow adsorption plates 212 to move closer together. When the composite film is wrinkled, the return spring 216 corresponding to the hollow adsorption plate 212 stretches and deforms. At this time, the flexible transmission component 213 is in a low-to-medium range pulling mode. After the identification component 13 identifies the wrinkled state of the composite film, the flexible transmission component 213 switches to a high range pulling mode, further pulling the two hollow adsorption plates 212. The return spring 216 is stretched to its limit, and then the flexible transmission component 213 quickly resets. Due to the flexibility of the flexible transmission component 213, the return spring 216 will further retract, thereby driving the hollow adsorption plate 212 to pull the composite film. The identification component 13 can then monitor the stretched composite film.

[0029] To improve the accuracy of monitoring, the identification component 13 is specifically a multispectral imager. The multispectral imager is a basic device that can simultaneously acquire spectral features and spatial image information. The multispectral imaging technology used by the multispectral imager is to divide the incident full-band or wide-band light signal into several narrow-band beams, and then image them onto the corresponding detectors to obtain images of different spectral bands.

[0030] In order to monitor the composite membrane on the monitoring platform 2, the identification end of the identification component 13 faces the monitoring platform 2.

[0031] In order to enable the hollow adsorption plate 212 to adsorb and position the composite membrane, the monitoring platform 2 is equipped with an air pump connected to the air extraction pipe 215.

[0032] Specifically, the exhaust pipe 215 is a retractable flexible hose structure to prevent it from affecting the movement of the hollow adsorption plate 212.

[0033] In order to enable the hollow adsorption plate 212 to move horizontally, the inner walls of the sliding groove 211 are provided with horizontal positioning slide rails, and the outer walls of the hollow adsorption plate 212 are provided with sliding positioning grooves 2122 that are adapted to the positioning slide rails.

[0034] To flexibly wrinkle or stretch the composite film, the flexible transmission assembly 213 includes a transmission frame 2131 fixedly connected to the inner wall of the sliding groove 211, positioning guide wheels 2132, a strip-shaped sliding hole 2133, an adjusting wheel 2134, an elastic band 2135, and a drive structure 2136. Two positioning guide wheels 2132 are symmetrically arranged in the upper part of the transmission frame 2131. The strip-shaped sliding hole 2133 is vertically arranged in the middle of the transmission frame 2131. The adjusting wheel 2134 is movably arranged in the middle of the transmission frame 2131 and is slidably limited by the strip-shaped sliding hole 2133. The middle section of the elastic band 2135 passes under the adjusting wheel 2134, and the left and right ends of the elastic band 2135 pass above the two positioning guide wheels 2132 respectively and are fixedly connected to the two assembly grooves 214 respectively. The drive structure 2136 is connected to the bottom of the transmission frame 2131 to drive the adjusting wheel 2134 to move up and down along the strip-shaped sliding hole 2133.

[0035] The working principle of the flexible transmission component 213 is as follows: when the composite membrane wrinkles, the drive structure 2136 drives the adjusting wheel 2134 to slide to the upper or middle position of the strip-shaped sliding hole 2133, such as... Figure 5 As shown, at this time, under the downward pressure of the adjusting wheel 2134, the elastic band 2135 pulls on the two hollow adsorption plates 212 through the two mounting slots 214 at both ends. The return spring 216 has not reached its limit tension. After the driving structure 2136 drives the adjusting wheel 2134 to reset, the reset spring 216 will not further rebound and compress, so it will not pull on the composite film. When the composite film needs to be pulled, the driving structure 2136 drives the adjusting wheel 2134 to slide to the lower part of the strip-shaped sliding hole 2133, as shown. Figure 4 As shown, at this time, the reset spring 216 reaches the limit of tension. After the driving structure 2136 drives the adjusting wheel 2134 to reset, the reset spring 216, in conjunction with the elastic band 2135, will further rebound and compress to drive the hollow adsorption plate 212 to pull the composite film.

[0036] The elastic band 2135 and the assembly groove 214 are fixedly connected by rivets.

[0037] The elastic band 2135 is made of one of the following materials: rubber, thermoplastic polyurethane, and polyester elastic fiber, preferably thermoplastic polyurethane, which has the advantages of high wear resistance, stable coefficient of friction, and suitability for frequent reciprocating motion.

[0038] To convert rotational motion into linear motion and improve the smoothness of the up-and-down movement of the adjusting wheel 2134, the drive structure 2136 includes a motor 21361 fixedly connected to the bottom end of the transmission frame 2131, an adjusting frame 21362, a transmission screw 21363, and a positioning groove 21364. The output end of the motor 21361 faces upward and is connected to the transmission screw 21363. The adjusting frame 21362 is connected to the front edge of the adjusting wheel 2134 and has an internally threaded hole with an opening facing downward. The transmission screw 21363 extends vertically into the transmission frame 2131 and is threadedly connected to the adjusting frame 21362 through the internally threaded hole. The positioning groove 21364 is provided on the inner wall of the bottom of the transmission frame 2131 and is connected to the adjusting frame 21362 to restrict the rotation of the adjusting frame 21362.

[0039] The working principle of the drive structure 2136 is as follows: the motor 21361 drives the transmission screw 21363 to rotate in place, the transmission screw 21363 drives the threaded adjustment frame 21362 to move up and down along the positioning slide groove 21364, and the adjustment frame 21362 drives the adjustment wheel 2134 to move up and down along the strip-shaped slide hole 2133.

[0040] To prevent interference with the transport of the composite membrane, the top surface of the hollow adsorption plate 212 is flush with the top surface of the monitoring platform 2.

[0041] To prevent interference with the pulling operation of the elastic band 2135, the adjusting bracket 21362 is staggered from the elastic band 2135. Example 2

[0042] For the sake of brevity, the parts that are the same as those in other embodiments will not be described again. The main focus here is on the structure that is different from other embodiments of the present invention. Specifically, the identification component 13 is a high-speed industrial camera to achieve clear recording of high-speed dynamic processes. Example 3

[0043] For the sake of brevity, the parts that are the same as those in other embodiments will not be described again. The main description is of the structure that is different from other embodiments of the present invention. The elastic band 2135 and the assembly groove 214 are fixedly connected by bolts to facilitate disassembly and maintenance.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An online monitoring device for composite membrane quality based on multispectral imaging, characterized in that: Its structure includes a monitoring frame (1), an illumination component (11) is provided on the upper part of the front end face of the monitoring frame (1), a composite membrane input port (12) is provided in the middle of the monitoring frame (1), and at least one identification component (13) is vertically provided on the upper end of the monitoring frame (1). The monitoring platform (2) is located at the lower part of the front end face of the monitoring frame (1). The top surface of the monitoring platform (2) is provided with a flexible mechanical performance testing mechanism (21) to flexibly wrinkle or stretch the composite membrane during the monitoring process. A membrane guide frame (3) is located on the rear end face of the monitoring frame (1) to guide the composite membrane and transport it to the monitoring platform (2) through the composite membrane input port (12); Output rack (4) is located on the front end of the monitoring platform (2) to guide the composite membrane after monitoring to output; The flexible mechanical performance testing mechanism (21) includes a horizontally arranged sliding groove (211), two hollow adsorption plates (212) symmetrically arranged in the left and right parts of the sliding groove (211), and a flexible transmission component (213) fixed in the middle of the sliding groove (211). The bottom surface of the hollow adsorption plate (212) is provided with an assembly groove (214). The top of the flexible transmission component (213) is connected to the two assembly grooves (214). When the flexible transmission component (213) is running, it drives the two hollow adsorption plates (212) to move closer to each other synchronously through the two assembly grooves (214). The top surface of the hollow adsorption plate (212) is provided with a number of adsorption micropores (2121). The bottom of the hollow adsorption plate (212) is connected to an air extraction pipe (215). A return spring (216) is provided between the end of the hollow adsorption plate (212) away from the flexible transmission component (213) and the inner wall of the sliding groove (211). The flexible transmission assembly (213) includes a transmission frame (2131) fixedly connected to the inner wall of the sliding groove (211), positioning guide wheels (2132), strip-shaped sliding holes (2133), adjusting wheels (2134), elastic bands (2135), and a drive structure (2136). Two positioning guide wheels (2132) are symmetrically arranged in the upper part of the transmission frame (2131). The strip-shaped sliding holes (2133) are vertically arranged in the middle of the transmission frame (2131). The adjusting wheels (2134)... The elastic band (2135) is located in the middle of the transmission frame (2131) and is slidably limited by the strip-shaped sliding hole (2133). The middle section of the elastic band (2135) passes under the adjusting wheel (2134). The left and right ends of the elastic band (2135) pass above the two positioning guide wheels (2132) respectively and are fixedly connected to the two assembly slots (214). The driving structure (2136) is connected to the bottom of the transmission frame (2131) to drive the adjusting wheel (2134) to move up and down along the strip-shaped sliding hole (2133).

2. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 1, characterized in that: The identification component (13) is specifically one of a multispectral imager or a high-speed industrial camera.

3. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 2, characterized in that: The identification end of the identification component (13) faces the monitoring platform (2).

4. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 1, characterized in that: The monitoring platform (2) is equipped with an air pump connected to the air extraction pipe (215).

5. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 1, characterized in that: The sliding groove (211) has horizontally arranged positioning slide rails on both the front and rear inner walls, and the hollow adsorption plate (212) has sliding positioning grooves (2122) on both the front and rear outer walls that are adapted to the positioning slide rails.

6. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 1, characterized in that: The drive structure (2136) includes a motor (21361) fixedly connected to the bottom end of the transmission frame (2131), an adjusting frame (21362), a transmission screw (21363), and a positioning groove (21364). The output end of the motor (21361) faces upward and is connected to the transmission screw (21363). The adjusting frame (21362) is connected to the front edge of the adjusting wheel (2134). The adjusting frame (21362) has an internal threaded hole with the opening facing downward. The transmission screw (21363) extends vertically into the transmission frame (2131) and is threadedly connected to the adjusting frame (21362) through the internal threaded hole. The positioning groove (21364) is provided on the inner wall of the bottom of the transmission frame (2131) and is connected to the adjusting frame (21362) to restrict the rotation of the adjusting frame (21362).

7. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 1, characterized in that: The top surface of the hollow adsorption plate (212) is flush with the top surface of the monitoring platform (2).

8. The online monitoring device for composite membrane quality based on multispectral imaging according to claim 6, characterized in that: The adjustment bracket (21362) is offset from the elastic band (2135).

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