Composite sheet screening equipment

Abstract

The utility model discloses composite sheet screening equipment which comprises a rotary table, a conveying and feeding device, a visual detection device and a discharging mechanism. The multiple visual detection devices are arranged in the circumferential direction of the rotary disc. Wherein the detection device comprises an overlapped material detection device which is used for identifying composite sheets which are overlapped with each other; the multiple discharging mechanisms are arranged in the circumferential direction of the rotary disc. The multiple discharging mechanisms are located on the rear side of the visual detection device in the rotating direction of the rotating disc. The discharging mechanism comprises a non-defective product discharging mechanism, a defective product discharging mechanism and an overlapped material discharging mechanism, the non-defective product discharging mechanism is used for discharging the composite sheets detected as non-defective products, and the defective product discharging mechanism is used for discharging the composite sheets detected as defective products; and the overlapped material discharging mechanism is used for discharging the composite sheets which are detected to be overlapped. According to the utility model, the problem of waste caused by the fact that good composite sheets in the stacked composite sheets are mistakenly screened and rejected can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a composite sheet screening equipment. Background Art

[0002] In the related art, the composite sheet is conveyed to the visual inspection device by a conveying and feeding device for inspection, and according to the inspection results of the visual inspection device, defective products with problems such as unqualified dimensions, dirty surfaces, and burrs are screened out; due to the small thickness of the composite sheet, the composite sheets often stack on each other during the conveying process, and the position of the stacked composite sheets conveyed to the visual inspection device is usually detected and recognized as a defective product, so that the good composite sheets in the stacked composite sheets are easily screened out by mistake, resulting in unnecessary waste. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a composite sheet screening equipment, which can effectively improve the waste problem caused by the good composite sheets in the stacked composite sheets being screened out by mistake.

[0004] The composite sheet screening equipment according to an embodiment of the utility model includes a turntable, a conveying and feeding device, a visual inspection device, and a blanking mechanism. The outlet end of the conveying and feeding device is located above the turntable and is used for conveying the composite sheet to the turntable; there are multiple visual inspection devices, which are arranged along the circumferential direction of the turntable, and each visual inspection device is used for inspecting the materials passing through its inspection area on the turntable; among them, the visual inspection device includes an overlapping material detection device, and the overlapping material detection device is used to identify the composite sheets that overlap with each other; there are multiple blanking mechanisms, which are arranged along the circumferential direction of the turntable; along the rotation direction of the turntable, the multiple blanking mechanisms are all located behind the visual inspection device; the blanking mechanism includes a good product blanking mechanism, a defective product blanking mechanism, and an overlapping material blanking mechanism. The good product blanking mechanism is used for blanking the composite sheets detected as good products, the defective product blanking mechanism is used for blanking the composite sheets detected as defective products, and the overlapping material blanking mechanism is used for blanking the composite sheets detected as having overlaps.

[0005] The composite sheet screening equipment according to an embodiment of the utility model has at least the following beneficial effects:

[0006] For the screening of composite sheets in this embodiment, since the visual inspection device includes an overlapping material detection device, it can identify composite sheets that overlap with each other. By setting up an overlapping material discharging mechanism dedicated to discharging the identified overlapping composite sheets, the overlapping composite sheets can be separately screened out. As a result, the good composite sheets among the overlapping composite sheets will not be misidentified as defective composite sheets and discharged together with the defective composite sheets. Moreover, the separately screened and discharged overlapping composite sheets can be conveniently re-fed into the composite sheet screening equipment for re-screening later. Therefore, it can effectively improve the waste problem caused by the mis-screening and rejection of good composite sheets in the overlapping composite sheets.

[0007] For the composite sheet screening equipment according to some embodiments of the present invention, the defective product discharging mechanism includes a burr defective product discharging mechanism, a dimension defective product discharging mechanism, and an appearance defective product discharging mechanism. The burr defective product discharging mechanism is used to discharge the composite sheets detected to have burrs, and the dimension defective product discharging mechanism and the appearance defective product discharging mechanism are respectively used to discharge the composite sheets detected to be unqualified in dimension and appearance.

[0008] For the composite sheet screening equipment according to some embodiments of the present invention, each discharging mechanism includes a blowing pipe and a discharging channel. The blowing pipe is arranged above the turntable, and the blowing port faces the outside of the turntable. The discharging channel is inclined, and the upper end inlet faces the blowing port of the blowing pipe.

[0009] For the composite sheet screening equipment according to some embodiments of the present invention, the composite sheet screening equipment further includes a guiding mechanism. Along the rotation direction of the turntable, the guiding mechanism is located on the front side of the visual inspection device and is used to guide the composite sheet to the target position in the radial direction of the turntable so that the composite sheet can pass through the detection areas of each visual inspection device under the drive of the turntable.

[0010] For the composite sheet screening equipment according to some embodiments of the present invention, the guiding mechanism includes a first guiding plate and a second guiding plate arranged above the turntable and arranged in sequence along the rotation direction of the turntable. The distance from the first guiding plate to the center of the turntable is greater than the distance from the second guiding plate to the center of the turntable. One end of the first guiding plate facing the discharging end of the conveying and feeding device is provided with a first guiding surface, and along the direction away from the discharging end of the conveying and feeding device, the distance from the first guiding surface to the center of the turntable gradually increases. One end of the second guiding plate facing the discharging end of the conveying and feeding device is provided with a second guiding surface, and along the direction away from the discharging end of the conveying and feeding device, the distance from the second guiding surface to the center of the turntable gradually decreases.

[0011] According to the composite sheet screening equipment of some embodiments of the present utility model, the composite sheet screening equipment further includes a feeding induction mechanism, which is arranged between the material guiding mechanism and the vision detection device and is electrically connected to the vision detection device.

[0012] According to the composite sheet screening equipment of some embodiments of the present utility model, the composite sheet screening equipment further includes a feeding device, which is arranged on one side of the conveying and feeding device and is used to supply composite sheets to the conveying and feeding device.

[0013] According to the composite sheet screening equipment of some embodiments of the present utility model, the conveying and feeding device includes a vibrating bowl and a feeding rail. The inlet end of the feeding rail is communicated with the discharge port of the vibrating bowl. A spirally extending conveying rib is arranged on the inner side wall of the vibrating bowl. The feeding end of the conveying rib extends to the bottom of the vibrating bowl, and the discharging end extends to the discharge port of the vibrating bowl.

[0014] According to the composite sheet screening equipment of some embodiments of the present utility model, the conveying rib includes a plurality of conveying sections protruding from the inner wall of the vibrating bowl at different heights. The protruding height of some conveying sections is less than or equal to the thickness of a single composite sheet, and the protruding height of each conveying section is greater than 0.5 times the thickness of a single composite sheet.

[0015] According to the composite sheet screening equipment of some embodiments of the present utility model, the protruding height of the conveying section at the feeding end of the conveying rib is greater than 2 times the thickness of a single composite sheet.

[0016] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is a schematic structural diagram of the composite sheet screening equipment according to an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a schematic connection diagram between the turntable, the vision detection device, the guiding mechanism and the feeding detection mechanism shown in ;

[0020] Figure 3 is Figure 2 a partial enlarged view of the area shown as A in ;

[0021] Figure 4 is Figure 1 a schematic connection diagram between the conveying and feeding device and the feeding device shown in.

[0022] Reference numerals:

[0023] Turntable 100; Visual inspection device 200; Conveyor feeding device 300; Vibration bowl 310; Conveyor rib 311; Feeding rail 320; Discharging mechanism 400; Good product discharging mechanism 400a; Burr defective product discharging mechanism 400b; Dimension defective product discharging mechanism 400c; Appearance defective product discharging mechanism 400d; Overlapping material discharging mechanism 400e; Blowing pipe 410; Discharging channel 420; Material guiding mechanism 500; First material guiding plate 510; First guiding surface 511; Second material guiding plate 520; Second guiding surface 521; Incoming material sensing mechanism 600; Feeding device 700; Feeding hopper 710; Inclined chute 720. Detailed implementation manners

[0024] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, left, right, front, back, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, if the first and the second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0027] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0028] The following refers to the attached Figure 1 to the attached Figure 4 , and describes the composite sheet screening equipment of the embodiments of the present utility model.

[0029] Refer to Figure 1 and Figure 2, A composite sheet screening device according to some embodiments of the present utility model includes a turntable 100, a vision inspection device 200, a conveying and feeding device 300, and a blanking mechanism 400; wherein, the outlet end of the conveying and feeding device 300 is located above the turntable 100 and is used for continuously conveying composite sheets to the turntable 100; the vision inspection device 200 is used to inspect the composite sheets on the turntable 100, and there are multiple vision inspection devices 200 which are arranged along the circumferential direction of the turntable 100; the turntable 100 is rotatably arranged and is used to drive the composite sheets to sequentially pass through the inspection areas of each vision inspection device 200, and each vision inspection device 200 can inspect the materials (i.e., composite sheets) on the turntable 100 passing through its inspection area; among the multiple vision inspection devices 200, there are various vision inspection devices 200 with different uses such as an appearance inspection device, a dimension inspection device, a burr inspection device, and an overlapping material inspection device, etc. The overlapping material inspection device is used to identify composite sheets with overlapping each other, the appearance inspection device is used to detect whether there are appearance problems such as stains on the composite sheets, the dimension inspection device is used to detect whether the dimensions of the composite sheets are qualified, and the burr inspection mechanism is used to detect whether there are burrs on the edges of the composite sheets. The blanking mechanism 400 also includes multiple ones, and the multiple blanking mechanisms 400 are also arranged along the circumferential direction of the turntable 100; along the rotation direction of the turntable 100, the multiple blanking mechanisms 400 are all located behind the vision inspection device 200. Therefore, the composite sheets that have completed the vision inspection will be able to reach the position where the blanking mechanism 400 is located under the drive of the turntable 100 to complete the blanking; specifically, the blanking mechanism 400 includes a good product blanking mechanism 400a, a defective product blanking mechanism, and an overlapping material blanking mechanism 400e. The good product blanking mechanism 400a is used to blank the composite sheets detected as good products, the defective product blanking mechanism 4 is used to blank the composite sheets detected as defective products, and the overlapping material blanking mechanism 400e is used to blank the composite sheets detected as having overlapping.

[0030] It should be understood that for the screening of composite sheets in this embodiment, since the vision inspection device 200 includes an overlapping material inspection device, it can identify composite sheets with overlapping each other, and by setting the overlapping material blanking mechanism 400e which is specifically used to complete the blanking of the identified composite sheets with overlapping each other, the composite sheets with overlapping can be separately screened out. Therefore, the good product composite sheets among the composite sheets with overlapping will not be misidentified as defective product composite sheets, and will not be screened and blanked together with the defective product composite sheets. Moreover, the separately screened and blanked composite sheets with overlapping are also convenient for being re-fed into the composite sheet screening device for screening again later. Therefore, it can effectively improve the waste problem caused by the good product composite sheets in the mutually stacked composite sheets being mis-screened and removed.

[0031] It can be understood that in some of these embodiments, the overlapping material detection device may include a contour size detection device. Since it is difficult for the overlapping composite sheets to completely coincide with each other, there are also areas where they are offset from each other between the overlapping composite sheets. As a result, the overall contour size of the overlapping composite sheets is significantly larger than that of a conventional composite sheet, and thus can be detected and recognized by the contour size detection device; in some other embodiments, the overlapping material feeding mechanism 400e may include a thickness detection device. Since the overall thickness of the overlapping composite sheets is significantly larger than that of a conventional composite sheet, it can be detected and recognized by the thickness detection device; or, in some other additional embodiments, the overlapping material detection mechanism may also include both a contour size detection device and a thickness detection device to further improve the recognition accuracy. It should be understood that when the overlapping material detection mechanism includes a thickness detection device, the thickness detection device can be selected to take a side view of the composite sheet at an inclined angle to better detect and obtain the thickness of the composite sheet.

[0032] It can be understood that in some of these embodiments, the turntable 100 is a transparent turntable 100, and some of the cameras in the visual detection device 200 are arranged at the bottom of the turntable 100 to facilitate the detection of the bottom appearance, size, and burr conditions of the composite sheet.

[0033] It should be understood that for composite sheets with burrs, the method of reprocessing to remove burrs can be adopted to eliminate the defective defects. Therefore, in some of these embodiments, with reference to Figure 2 , there are 3 defective product feeding mechanisms, which are respectively the burr defective product feeding mechanism 400b, the size defective product feeding mechanism 400c, and the appearance defective product feeding mechanism 400d. Among them, the burr defective product feeding mechanism 400b is used to feed the composite sheets detected as having burrs, and the size defective product feeding mechanism 400c and the appearance defective product feeding mechanism 400d are respectively used to feed the composite sheets detected as having unqualified sizes and unqualified appearances; by setting the burr defective product feeding mechanism 400b, which is specifically used to complete the feeding of the identified composite sheets with burrs, the composite sheets with burrs can be separately screened out, facilitating the recycling of the composite sheets with burrs and their reuse through reprocessing.

[0034] It can be understood that in some of these embodiments, to simplify the structure, the structures of each feeding mechanism 400 are the same; and, with reference to Figure 2, specifically, each blanking mechanism 400 includes a blowing pipe 410 and a blanking channel 420. Among them, the blowing pipe 410 is arranged above the turntable 100, and the blowing port faces the outside of the turntable 100. The blanking channel 420 is inclined, and the upper end inlet faces the blowing port of the blowing pipe 410. Thus, when the composite sheet moves to between the corresponding blowing pipe 410 and the blanking channel 420 driven by the turntable 100, by controlling the blowing pipe 410 to blow air, the composite sheet can be blown into the upper end inlet of the blanking channel 420. Then, by correspondingly arranging collection containers such as collection boxes at the lower ends of the respective blanking channels 420, the collection of various composite sheets can be completed.

[0035] It can be understood that in order to ensure that all the composite sheets transported to the turntable 100 by the conveying and feeding device 300 can move through the detection areas of the respective vision detection devices 200 driven by the turntable 100. In some embodiments, referring to Figure 2 , the composite sheet screening device further includes a guiding mechanism 500. Along the rotation direction of the turntable 100, the guiding mechanism 500 is located on the front side of the vision detection device 200 and is used to guide the composite sheet to the target position in the radial direction of the turntable 100. The projections of the detection areas of the respective vision detection devices 200 on the turntable 100 and the above target position are within the same annular area of the turntable 100, so that the composite sheet can move through the detection areas of the respective vision detection devices 200 driven by the turntable 100, and thus each composite sheet on the turntable 100 can be detected by the respective vision detection devices 200.

[0036] It can be understood that in some embodiments, referring to Figure 2 and Figure 3, specifically, the material guiding mechanism 500 includes a first material guiding plate 510 and a second material guiding plate 520 which are arranged above the turntable 100 and in sequence along the rotation direction of the turntable 100. Thus, the composite sheet material rotating with the turntable 100 will be able to pass near the first material guiding plate 510 and the second material guiding plate 520 in sequence; among them, the distance from the first material guiding plate 510 to the center of the turntable 100 is greater than the distance from the second material guiding plate 520 to the center of the turntable 100. One end of the first material guiding plate 510 facing the discharging end of the conveying and feeding device 300 is provided with a first guiding surface 511. Along the direction away from the discharging end of the conveying and feeding device 300, the distance from the first guiding surface 511 to the center of the turntable 100 gradually increases. Thus, after the composite sheet material contacts the first guiding surface 511, the first guiding surface 511 will be able to push and guide the composite sheet material in the direction away from the center of the turntable 100, so that the distance from the composite sheet material to the center of the turntable 100 is greater than the distance from the first material guiding plate 510 to the center of the turntable 100; one end of the second material guiding plate 520 facing the discharging end of the conveying and feeding device 300 is provided with a second guiding surface 521. Along the direction away from the discharging end of the conveying and feeding device 300, the distance from the second guiding surface 521 to the center of the turntable 100 gradually decreases. Thus, after the composite sheet material contacts the second guiding surface 521, the second guiding surface 521 will be able to push and guide the composite sheet material in the direction close to the center of the turntable 100, so that the distance from the composite sheet material to the center of the turntable 100 is less than the distance from the second material guiding plate 520 to the center of the turntable 100. That is to say, in the radial direction of the turntable 100, the composite sheet material will be able to be guided to the target position between the first material guiding plate 510 and the second material guiding plate 520.

[0037] It can be understood that in some embodiments, referring to Figure 2 , the composite sheet material screening device further includes a material incoming sensing mechanism 600. The material incoming sensing mechanism 600 is arranged between the material guiding mechanism 500 and the vision detection device 200 and is electrically connected to the vision detection device 200; through the above structure, the composite sheet material whose position is guided by the material guiding mechanism 500 will then pass through the sensing area of the material incoming sensing mechanism 600 under the drive of the turntable 100, so that the arrival of the composite sheet material to be detected can be sensed. Furthermore, each vision detection device 200 electrically connected to the material incoming sensing mechanism 600 can timely perform corresponding detection on the composite sheet material when the composite sheet material passes through its corresponding detection area.

[0038] It can be understood that in some embodiments, referring to Figure 4, The conveying and feeding device 300 includes a vibrating disk 310 and a feeding rail 320. The inlet end of the feeding rail 320 communicates with the discharge port of the vibrating disk 310. A helically extending conveying rib 311 is provided on the inner side wall of the vibrating disk 310. The feeding end of the conveying rib 311 extends to the bottom of the vibrating disk 310, and the discharging end extends to the discharge port of the vibrating disk 310. Thus, when the vibrating disk 310 works, the composite sheets at the bottom of the vibrating disk 310 will be able to rise along the conveying rib 311 and finally enter the feeding rail 320, and can be conveyed by the feeding rail 320 to the turntable 100.

[0039] It can be understood that in order to reduce the stacking between composite sheets and thus improve the detection efficiency, in some embodiments, the conveying rib 311 includes a plurality of conveying sections protruding from the inner wall of the vibrating disk 310 at different heights. The protruding height of some conveying sections is less than or equal to the thickness of a single composite sheet, and the protruding height of each conveying section is greater than 0.5 times the thickness of a single composite sheet; since the protruding height of each conveying section is greater than 0.5 times the thickness of a single composite sheet, each conveying section can well support the composite sheet to allow the composite sheet to spiral upward along the conveying rib 311. At the same time, since there are some conveying sections with a protruding height less than or equal to the thickness of the composite sheet, when the overlapping composite sheets are conveyed to these conveying sections, except for the lowermost composite sheet directly supported on this conveying section, the remaining upper composite sheets will fall back to the lower conveying section or the bottom of the vibrating disk 310 due to the influence of gravity and vibration.

[0040] It can be understood that on the basis of the above-mentioned some embodiments, in some examples, the protruding height of the conveying section at the feeding end of the conveying rib 311 is greater than 2 times the thickness of a single composite sheet, so that the feeding end of the conveying rail can have better bearing capacity and can better carry the composite sheet, allowing a relatively large number of composite sheets to come from the bottom of the vibrating disk 310 to the conveying rail, and even coming to the feeding end of the conveying rail in an overlapping manner, thereby improving the feeding efficiency of the conveying and feeding device 300.

[0041] In some embodiments, the composite sheet screening device further includes a feeding device 700. The feeding device 700 is arranged on one side of the conveying and feeding device 300, and the feeding device 700 is used to supply composite sheets to the conveying and feeding device 300. For example, in one embodiment, referring to Figure 4 , a feeding hopper 710 is provided at the top of the feeding device 700 to facilitate the operator to put the composite sheets to be detected into the feeding device 700; the feeding device 700 further includes an inclined chute 720 with the upper end extending to the bottom of the feeding hopper 710 and the lower end extending above the vibrating disk 310, so that the composite sheets in the feeding hopper 710 can slide into the vibrating disk 310 through the inclined chute 720.

[0042] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A composite sheet screening device, characterized in that: include: Turntable; A conveying and feeding device, the outlet end of which is located above the turntable and is used to convey the composite sheet to the turntable; The visual inspection device includes a plurality of visual inspection devices arranged along the circumference of the turntable, each visual inspection device is used to inspect the material passing through its inspection area on the turntable; wherein the visual inspection device includes an overlapping material detection device, and the overlapping material detection device is used to identify the existence of overlapping composite sheets; The unloading mechanism includes a plurality of unloading mechanisms which are arranged along the circumference of the turntable; along the rotation direction of the turntable, the plurality of unloading mechanisms are located at the rear side of the visual inspection device; the unloading mechanism includes a good product unloading mechanism, a defective product unloading mechanism and an overlapping material unloading mechanism; the good product unloading mechanism is used to unload composite sheets detected as good products, the defective product unloading mechanism is used to unload composite sheets detected as defective products, and the overlapping material unloading mechanism is used to unload composite sheets detected to have overlap.

2. A composite sheet material screening device according to claim 1, characterized in that: The defective product unloading mechanism includes a burr defective product unloading mechanism, a size defective product unloading mechanism and an appearance defective product unloading mechanism. The burr defective product unloading mechanism is used to unload composite sheets detected as having burrs, and the size defective product unloading mechanism and the appearance defective product unloading mechanism are respectively used to unload composite sheets detected as unqualified in size and unqualified in appearance.

3. The composite sheet material screening device according to claim 1, characterized in that: Each of the unloading mechanisms includes an air blowing pipe and a unloading channel. The air blowing pipe is arranged above the turntable, and the air blowing port faces the outside of the turntable. The unloading channel is inclined, and the upper end inlet faces the air blowing port of the air blowing pipe.

4. A composite sheet material screening device according to any one of claims 1 to 3, characterized in that: The composite sheet screening equipment also includes a material guiding mechanism, which is located on the front side of the visual inspection device along the rotation direction of the turntable and is used to guide the composite sheet to the target position in the radial direction of the turntable, so that the composite sheet can pass through the inspection area of ​​each visual inspection device driven by the turntable.

5. A composite sheet material screening device according to claim 4, characterized in that: The material guiding mechanism includes a first material guiding plate and a second material guiding plate which are arranged above the turntable and sequentially arranged along the rotation direction of the turntable, wherein the distance from the first material guiding plate to the center of the turntable is greater than the distance from the second material guiding plate to the center of the turntable; a first guiding surface is provided at one end of the first material guiding plate which faces the discharge end of the conveying and loading device, and the distance from the first guiding surface to the center of the turntable gradually increases in the direction away from the discharge end of the conveying and loading device; a second guiding surface is provided at one end of the second material guiding plate which faces the discharge end of the conveying and loading device, and the distance from the second guiding surface to the center of the turntable gradually decreases in the direction away from the discharge end of the conveying and loading device.

6. The composite sheet material screening device according to claim 4, characterized in that: The composite sheet material screening device also includes an incoming material sensing mechanism, which is arranged between the material guiding mechanism and the visual detection device and is electrically connected to the visual detection device.

7. A composite sheet material screening device according to any one of claims 1 to 3, characterized in that: The composite sheet screening equipment also includes a feeding device, which is arranged on one side of the conveying and loading device, and is used to supply composite sheets to the conveying and loading device.

8. A composite sheet material screening device according to any one of claims 1 to 3, characterized in that: The conveying and feeding device includes a vibrating plate and a feeding rail, the inlet end of the feeding rail is connected to the discharge port of the vibrating plate, and a spirally extending conveying rib is provided on the inner side wall of the vibrating plate. The feeding end of the conveying rib extends to the bottom of the vibrating plate, and the discharge end extends to the discharge port of the vibrating plate.

9. A composite sheet material screening device according to claim 8, characterized in that: The conveying ribs include multiple conveying sections protruding from the inner wall of the vibration plate at different heights, the protruding height of some of the conveying sections is less than or equal to the thickness of a single composite sheet, and the protruding height of each of the conveying sections is greater than 0.5 times the thickness of a single composite sheet.

10. The composite sheet material screening device according to claim 9, characterized in that: The protruding height of the conveying section located at the feeding end of the conveying rib is greater than twice the thickness of a single composite sheet.

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