Membrane detection mechanism and membrane defect detection equipment

Abstract

The utility model discloses a diaphragm detection mechanism and diaphragm defect detection equipment, comprising a front detection transmission line which at least comprises a first detection conveying device, a first light source assembly and a first camera assembly, and the first detection conveying device is used for conveying a diaphragm; the first light source assembly and the first camera assembly are used for carrying out lighting shooting detection on the front surface of the diaphragm; the transition assembly is arranged between the front detection transmission line and the back detection transmission line and at least comprises a detection transition plate, and the detection transition plate is provided with a transparent window; the reverse side detection transmission line at least comprises a second detection conveying device, a second light source assembly and a second camera assembly, the second light source assembly is arranged below the transparent window and used for lighting the reverse side of the membrane, and the second camera assembly is arranged above the transparent window and used for shooting and detecting the reverse side of the membrane. The defects of the front and the back of the diaphragm are detected through the front detection transmission line and the back detection transmission line.

Description

Technical Field

[0001] The utility model relates to the technical field of defect detection, in particular to a diaphragm detection mechanism and a diaphragm defect detection device. Background Art

[0002] A reflective sheet is an important component of a display device, mainly used to improve the viewing effect of the display device (such as a TV set). This reflective sheet can reduce reflection, make the picture display of the TV set clearer and the brightness more uniform. At the same time, it can also protect the eyes of viewers, avoid direct light irradiation on the eyes, and reduce visual fatigue.

[0003] During the production process of the reflective sheet, scratches may exist on the surface of the reflective sheet, resulting in defects such as scratches and dirt on the surface of the reflective sheet. The defective reflective sheet will affect the display effect of the display device. Therefore, it is necessary to identify the unqualified reflective sheets with defects to avoid flowing into the display device and affecting the user experience.

[0004] Therefore, how to detect the defects of diaphragms such as reflective sheets is a technical problem that needs to be solved by those skilled in the art at present. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a diaphragm detection mechanism to detect the defects of the diaphragm;

[0006] Another purpose of the utility model is to provide a [device] with the above diaphragm detection mechanism.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A diaphragm detection mechanism includes a front detection transmission line, a back detection transmission line, and a transition component arranged between the front detection transmission line and the back detection transmission line;

[0009] The front detection transmission line at least includes a first detection conveying device, a first light source component, and a first camera component. The first detection conveying device is used to convey the diaphragm, and the first light source component and the first camera component are used to perform light irradiation and shooting detection on the front of the diaphragm;

[0010] The transition component at least includes a detection transition plate, and the detection transition plate is provided with a transparent window;

[0011] The back detection transmission line at least includes a second detection conveying device, a second light source component, and a second camera component. The second light source component is arranged below the transparent window and is used to perform light irradiation on the back of the diaphragm, and the second camera component is arranged above the transparent window and is used to perform shooting detection on the back of the diaphragm.

[0012] Optionally, in the above diaphragm detection mechanism, the transition assembly further includes:

[0013] Two pressing wheel fixing profiles, which are respectively fixed on both sides of the detection transition plate along the conveying direction of the diaphragm;

[0014] A transition pressing wheel assembly, and each of the pressing wheel fixing profiles is provided with the transition pressing wheel assembly. The transition pressing wheel assembly at least includes a first pressing wheel capable of rotating around its own axis. The axis of the first pressing wheel is perpendicular to the transmission direction of the diaphragm, and the first pressing wheels on the two pressing wheel fixing profiles are respectively configured to be located above the first detection conveying device and the second detection conveying device for pressing the diaphragm.

[0015] Optionally, in the above diaphragm detection mechanism, the transition pressing wheel assembly further includes:

[0016] A pressing wheel sliding seat, and the first pressing wheel is slidably arranged on the pressing wheel sliding seat in the vertical direction;

[0017] An adjusting buffer, which is arranged on the pressing wheel sliding seat, and the buffer end of the adjusting buffer acts on the first pressing wheel.

[0018] Optionally, in the above diaphragm detection mechanism, the first pressing wheels on each of the pressing wheel fixing profiles are multiple and arranged at intervals, and the arrangement direction of the first pressing wheels on the same pressing wheel fixing profile is perpendicular to the transmission direction of the diaphragm.

[0019] Optionally, in the above diaphragm detection mechanism, along the conveying direction of the diaphragm, the transition assembly at least further includes an anti-warping assembly arranged on the upstream side of the transparent window. The anti-warping assembly includes an anti-warping mounting seat and an anti-warping pressing roller fixed on the anti-warping mounting seat. A space for the diaphragm to pass through is formed between the anti-warping pressing roller and the detection transition plate.

[0020] Optionally, in the above diaphragm detection mechanism, the anti-warping pressing rollers are multiple and arranged at intervals, and the arrangement direction of each anti-warping pressing roller is perpendicular to the transmission direction of the diaphragm.

[0021] Optionally, in the above diaphragm detection mechanism, the detection transition plate is provided with an opening, and an inlaying step is arranged on the inner wall of the opening. A transparent glass is arranged on the inlaying step to form the transparent window.

[0022] Optionally, in the above diaphragm detection mechanism, it further includes:

[0023] A first detection in-place sensor, which is arranged upstream of the first camera assembly and is used to detect whether the diaphragm reaches the front detection position on the front detection transmission line;

[0024] The second detection-in-place sensor is disposed upstream of the second camera assembly and is configured to detect whether the diaphragm reaches the reverse detection position on the transition assembly.

[0025] The first controller activates the first light source assembly and the first camera assembly when the diaphragm reaches the front detection position, and activates the second light source assembly and the second camera assembly when the diaphragm reaches the reverse detection position.

[0026] Optionally, in the above diaphragm detection mechanism, along the transmission direction of the diaphragm, the front detection transmission line is located upstream of the reverse detection transmission line.

[0027] A front pressing wheel assembly is provided at one end of the front detection transmission line away from the transition assembly. The front pressing wheel assembly at least includes a second pressing wheel capable of rotating about its own axis. The second pressing wheel is configured to be located above the first detection conveying device and is used to press the diaphragm.

[0028] Optionally, in the above diaphragm detection mechanism, an encoder assembly is further included. The detection wheel of the encoder assembly acts on the first detection conveying device and is used to detect the running distance of the diaphragm on the first detection conveying device.

[0029] Optionally, in the above diaphragm detection mechanism, a diaphragm cleaning mechanism is provided at the foremost ends of the front detection transmission line and the reverse detection transmission line along the transmission direction of the diaphragm. The diaphragm cleaning mechanism is used to clean the surface of the diaphragm.

[0030] Optionally, in the above diaphragm detection mechanism, the diaphragm cleaning mechanism includes:

[0031] A first brush assembly including a brush. The brush is arranged along the transmission path of the diaphragm to clean the surface of the diaphragm being transmitted.

[0032] A cleaning pressing wheel assembly at least includes a third pressing wheel capable of rotating about its own axis. The third pressing wheel is located in the transmission direction of the diaphragm and downstream of the first brush assembly. The axis of the third pressing wheel is perpendicular to the transmission direction of the diaphragm, and the third pressing wheel is configured to be located above the first detection conveying device and is used to press the diaphragm transmitted from the upstream conveying device onto the first detection conveying device.

[0033] A cleaning transition plate is located between the first brush assembly and the cleaning pressing wheel assembly. The cleaning transition plate is used to carry the diaphragm.

[0034] Optionally, in the above diaphragm detection mechanism, the brush combination is several brush groups, each brush group includes at least an upper brush and a lower brush arranged oppositely, the first brush assembly further includes a brush driving device for driving both the upper brush and the lower brush to move towards the diaphragm, and the diaphragm is configured to pass between the upper brush and the lower brush;

[0035] The upper brush and the lower brush are configured to be driven by the brush driving device to switch between a cleaning position and a preparation position;

[0036] When in the cleaning position, the upper brush and the lower brush respectively contact the upper and lower surfaces of the diaphragm;

[0037] When in the preparation position, the upper brush and the lower brush are respectively separated from the upper and lower surfaces of the diaphragm.

[0038] Optionally, in the above diaphragm detection mechanism, the cleaning pressure wheel assembly further includes a pressure wheel lifting driving device for driving the third pressure wheel to switch between a pressing position and a yielding position;

[0039] When in the pressing position, the height position of the third pressure wheel is a position where it can press against the diaphragm and allow the diaphragm to continue to be transported along the transport path;

[0040] When in the yielding position, the height position of the third pressure wheel is a position where it can avoid the diaphragm.

[0041] Optionally, in the above diaphragm detection mechanism, it further includes: a cleaning induction device and a second controller;

[0042] The cleaning induction device is arranged between the cleaning pressure wheel assembly and the first brush assembly along the transport direction for detecting whether there is a diaphragm at a preset position on the cleaning transition plate and sending the detection result to the second controller;

[0043] The second controller is used to control the brush driving device and the pressure wheel lifting driving device to act when the detection result indicates that there is a diaphragm and the diaphragm is located below the third pressure wheel, so that the upper brush and the lower brush are in the cleaning position and the third pressure wheel is in the pressing position.

[0044] Optionally, in the above diaphragm detection mechanism, the second controller is further used to control the brush driving device and the pressure wheel lifting driving device to act when the diaphragm is transported away from below the third pressure wheel, so that the upper brush and the lower brush are in the preparation position and the third pressure wheel is in the yielding position.

[0045] Optionally, in the above diaphragm detection mechanism, a second brush assembly that moves with the third pressing wheel is further included, and the second brush assembly is arranged between the third pressing wheel and the first brush assembly along the transmission direction;

[0046] When the third pressing wheel is in the pressing position, the second brush assembly contacts the upper surface of the diaphragm on the cleaning transition plate;

[0047] When the third pressing wheel is in the retracted position, the second brush assembly is separated from the upper surface of the diaphragm on the cleaning transition plate.

[0048] The diaphragm detection mechanism provided by the present utility model includes a front detection transmission line, a back detection transmission line, and a transition assembly connected between the front detection transmission line and the back detection transmission line. Among them, the front detection transmission line can perform light-emitting shooting detection on the front side of the diaphragm through the first camera assembly and the first light source assembly; the back detection transmission line can perform light-emitting shooting detection on the back side of the diaphragm through the second camera assembly and the second light source assembly. The present utility model is provided with a transparent window on the transition plate to facilitate the second light source assembly to emit light from the back side of the diaphragm, so that the back defects of the diaphragm can be detected through the second camera assembly on the front side of the diaphragm.

[0049] A diaphragm defect detection device includes a loading transmission line and a diaphragm detection mechanism, and the diaphragm detection mechanism is the diaphragm detection mechanism described in any one of the above.

[0050] The diaphragm defect detection device provided by the present utility model has all the technical effects of the above diaphragm detection mechanism due to having the above diaphragm detection mechanism, and will not be elaborated herein again. Description of the Drawings

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0052] Figure 1 It is a schematic structural diagram of the diaphragm detection mechanism disclosed in the embodiment of the present utility model;

[0053] Figure 2 It is a front view of the diaphragm detection mechanism disclosed in the embodiment of the present utility model;

[0054] Figure 3 It is a schematic structural diagram of the transition assembly disclosed in the embodiment of the present utility model;

[0055] Figure 4 Top view of the transition component disclosed in the embodiment of the present utility model;

[0056] Figure 5 Front view of the transition component disclosed in the embodiment of the present utility model;

[0057] Figure 6 Schematic structural diagram of the transition pressure wheel component disclosed in the embodiment of the present utility model;

[0058] Figure 7 Schematic structural diagram of the anti-warping component disclosed in the embodiment of the present utility model;

[0059] Figure 8 Schematic structural diagram of the encoder component disclosed in the embodiment of the present utility model;

[0060] Figure 9 Schematic structural diagram of the diaphragm defect detection device disclosed in the embodiment of the present utility model;

[0061] Figure 10 Schematic structural diagram of the diaphragm cleaning mechanism in one angle disclosed in the embodiment of the present utility model;

[0062] Figure 11 Schematic structural diagram of the diaphragm cleaning mechanism in another angle disclosed in the embodiment of the present utility model;

[0063] Figure 12 Side view of the diaphragm cleaning mechanism disclosed in the embodiment of the present utility model;

[0064] Figure 13 Front view of the diaphragm cleaning mechanism provided in the embodiment of the present utility model after removing the cleaning pressure wheel component;

[0065] Figure 14 Assembly drawing of the loading transmission line, diaphragm cleaning mechanism and centering positioning module provided in the embodiment of the present utility model;

[0066] Figure 15 For Figure 14 front view;

[0067] Figure 16 Schematic structural diagram of the centering positioning module disclosed in the embodiment of the present utility model.

[0068] The meanings of the various reference numerals in the figure are as follows:

[0069] 100 - frame; 110 - belt line blower;

[0070] 200 - Front detection transmission line; 210 - First light source assembly; 211 - First light source bracket; 212 - First light source device; 220 - First camera assembly; 221 - First camera bracket; 222 - Camera adjustment bracket; 223 - First camera device; 230 - First detection conveying device;

[0071] 300 - Back detection transmission line; 310 - Second camera assembly; 311 - Second camera bracket; 312 - Second camera device; 320 - Second detection conveying device; 330 - Second light source assembly;

[0072] 400 - Transition assembly; 410 - Transition assembly mounting bracket; 420 - Anti - warping assembly; 421 - Anti - warping mounting base; 422 - Anti - warping pressure roller; 430 - Transition pressure wheel assembly; 431 - First pressure wheel; 432 - Pressure wheel mounting bracket; 433 - Pressure wheel sliding seat; 434 - Adjusting buffer; 435 - Pressure wheel fixing seat; 440 - Pressure wheel fixing profile; 450 - Detection transition plate; 460 - Transparent glass;

[0073] 500 - Second detection in - place sensor;

[0074] 600 - Front pressure wheel assembly; 601 - Front pressure wheel mounting beam; 602 - Second pressure wheel;

[0075] 700 - First detection in - place sensor;

[0076] 800 - Encoder assembly; 801 - Fixing bracket; 802 - First rotating shaft; 803 - Adjusting bracket; 804 - Second rotating shaft; 805 - Pressure adjusting assembly; 806 - Swing plate; 807 - Detection wheel; 808 - Encoder; 809 - Fixing plate;

[0077] 900 - Diaphragm cleaning mechanism; 910 - Cleaning bracket; 911 - Impurity receiving box; 912 - Impurity guide; 920 - Cleaning pressure wheel assembly; 921 - Pressure wheel lifting drive device; 922 - Pressure wheel mounting beam; 923 - Third pressure wheel; 930 - Cleaning transition plate; 940 - First brush assembly; 941 - Upper brush lifting cylinder; 942 - Lower brush lifting cylinder; 943 - Upper brush; 944 - Lower brush; 945 - Cleaning slide rail; 950 - Pressure wheel lifting guiding assembly; 951 - Pressure wheel lifting slide rail; 952 - Pressure wheel lifting slide seat; 960 - Pressure wheel limiting device; 970 - Second brush assembly; 980 - Cleaning induction device;

[0078] 1000 - Loading transmission line; 1001 - Loading bracket; 1002 - Electrical cabinet; 1003 - Loading conveyor belt; 1004 - Conveyor roller; 1005 - Start - stop button assembly; 1006 - In - material sensor;

[0079] 1100 - Centering positioning module; 1101 - Fixed bottom plate; 1102 - Guide rail; 1103 - Positioning moving part; 1104 - Guide rail slider; 1105 - Synchronous pulley; 1106 - Synchronous belt; 1107 - Positioning column; 1108 - Moving part limit block; 1109 - Moving part limit sensor. Detailed implementation manner

[0080] The core of the present utility model lies in providing a diaphragm detection mechanism to detect defects of the diaphragm;

[0081] Another core of the present utility model lies in providing one with the above diaphragm detection mechanism.

[0082] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0083] The reflective sheet is an important component of a display device. Defects such as scratches on its surface will affect the quality of the reflective sheet. Therefore, it is necessary to detect its defects. Based on this, the present utility model provides a diaphragm detection mechanism capable of detecting scratches on the reflective sheet. It should be noted that the diaphragm detection mechanism disclosed in this embodiment is not limited to detecting defects of the reflective sheet, and other diaphragms with defect detection requirements are also applicable. The following will be introduced by taking the diaphragm as an example.

[0084] As Figure 1 and Figure 2 shown, the embodiments of the present utility model disclose a diaphragm detection mechanism, which includes a front detection transmission line 200, a transition component 400, and a back detection transmission line 300. Among them, the front detection transmission line 200 at least includes a first detection conveying device 230, a first light source component 210, and a first camera component 220. The first detection conveying device 230 is used to convey the diaphragm, which can be an adsorption belt line. By using the belt line blower 110 to provide negative pressure, when the diaphragm is conveyed by the first detection conveying device 230, it can be adsorbed on the first detection conveying device 230 to ensure the stability of the diaphragm during the conveying process.

[0085] The first light source assembly 210 and the first camera assembly 220 are used to illuminate and photograph the front side of the diaphragm for detection. Specifically, the first light source assembly 210 is used to illuminate the shooting area to increase the brightness of the shooting area. When the diaphragm moves to the shooting area along with the first detection conveying device 230, the first camera assembly 220 photographs and detects the diaphragm passing through the shooting area, and then software can be used to identify defects in the photographed photos.

[0086] Furthermore, the first light source assembly 210 may include a first light source bracket 211 and a first light source device 212 mounted on the first light source bracket 211. The first light source bracket 211 can be fixed to the bracket of the front detection transmission line 200.

[0087] The first camera assembly 220 may include a first camera bracket 221, a camera adjustment bracket 222 mounted on the first camera bracket 221, and a first camera device 223 mounted on the camera adjustment bracket 222. The first camera bracket 221 can increase the installation height of the first camera device 223 to increase the viewing range. The camera adjustment bracket 222 can adjust the shooting angle of the first camera device 223, and then cooperate with the irradiation angle of the first light source device 212 to obtain a better viewing effect.

[0088] As Figures 3 - 5 shown, the transition assembly 400 is arranged between the front detection transmission line 200 and the back detection transmission line 300, and can assist the diaphragm to transition from the front detection transmission line 200 to the back detection transmission line 300. The transition assembly 400 at least includes a detection transition plate 450, and the detection transition plate 450 is provided with a transparent window. Since the back detection transmission line 300 will block the diaphragm and affect the detection of defects on the back side of the diaphragm. The transparent window has a light-transmitting effect, and the detection of the back side of the diaphragm can be completed at the position of the transparent window, that is, the position of the transparent window is the detection area for the back detection.

[0089] As Figure 1 and Figure 2 shown, the back detection transmission line 300 at least includes a second detection conveying device 320, a second light source assembly 330 and a second camera assembly 310. The second detection conveying device 320 is used to convey the diaphragm, and can be an adsorption belt line. The belt line blower 110 is used to provide negative pressure, so that when the diaphragm is conveyed by the second detection conveying device 320, it can be adsorbed on the second detection conveying device 320 to ensure the stability of the diaphragm during the conveying process. It should be noted that the front detection transmission line 200 and the back detection transmission line 300 can both be arranged on the frame 100 to increase the height of the front detection transmission line 200 and the back detection transmission line 300 for convenient operation.

[0090] The second light source assembly 330 is disposed below the transparent window and is used to illuminate the reverse side of the diaphragm. The second camera assembly 310 is disposed above the transparent window and is used to photograph and detect the reverse side of the diaphragm. Although the second camera assembly 310 is disposed above the transparent window, the second light source assembly 330 can be used to illuminate the reverse side of the diaphragm, and the defective position of the diaphragm can still be shown through the change in brightness in the captured image.

[0091] The second camera assembly 310 may include a second camera support 311, a camera fixing bracket mounted on the second camera support 311, and a second camera device 312 mounted on the camera fixing bracket. The second camera support 311 can increase the setting height of the second camera device 312 to increase the viewing range. Since the range of the transparent window is limited, the second camera device 312 can only view through a small range. Therefore, the shooting angle of the second camera device 312 does not need to be adjusted, and the viewing range can be restricted to the position of the transparent window.

[0092] The diaphragm detection mechanism provided by the present utility model includes a front detection transmission line 200, a reverse detection transmission line 300, and a transition assembly 400 connected between the front detection transmission line 200 and the reverse detection transmission line 300. Among them, the front detection transmission line 200 can illuminate and photograph the front side of the diaphragm through the first camera assembly 220 and the first light source assembly 210; the reverse detection transmission line 300 can illuminate and photograph the reverse side of the diaphragm through the second camera assembly 310 and the second light source assembly 330. The present utility model is provided with a transparent window on the detection transition plate 450 to facilitate the second light source assembly 330 to illuminate the reverse side of the diaphragm, so that the reverse side defects of the diaphragm can be detected through the second camera assembly 310 on the front side of the diaphragm.

[0093] As Figures 3 - 6 shown, in a specific embodiment of the present utility model, the transition assembly 400 further includes a press wheel fixing profile 440 and a transition press wheel assembly 430. Among them, there are two press wheel fixing profiles 440, which are used to provide an installation basis for the transition press wheel assembly 430. The two press wheel fixing profiles 440 are respectively fixed on both sides of the detection transition plate 450 along the conveying direction of the diaphragm. The press wheel fixing profile 440 can be fixed on the detection transition plate 450, or the press wheel fixing profile 440 and the detection transition plate 450 can be not fixed, but both are fixed on the brackets of the front detection transmission line 200 and the reverse detection transmission line 300. The present utility model does not limit the fixing relationship between the press wheel fixing profile 440 and the detection transition plate 450, as long as the two maintain the above position relationship. The two press wheel fixing profiles 440 can be fixed on the transition assembly mounting frame 410, and the transition assembly 400 is fixed at the corresponding position through the transition assembly mounting frames 410 at both ends.

[0094] Each pressing wheel fixing profile 440 is provided with a transition pressing wheel assembly 430. The transition pressing wheel assembly 430 on one pressing wheel fixing profile 440 is located above the first detection conveying device 230, and the transition pressing wheel assembly 430 on the other pressing wheel fixing profile 440 is located above the second detection conveying device 320.

[0095] The transition pressing wheel assembly 430 at least includes a first pressing wheel 431 capable of rotating around its own axis. The axis of the first pressing wheel 431 is perpendicular to the transmission direction of the diaphragm, so as to prevent the tangent direction of the outer peripheral surface of the first pressing wheel 431 from having an angle with the conveying direction of the diaphragm and deflecting the diaphragm. The first pressing wheels 431 located on the two pressing wheel fixing profiles 440 are respectively configured to be located above the first detection conveying device 230 and the second detection conveying device 320 for pressing the diaphragm.

[0096] The first pressing wheel 431 is used to press the diaphragm onto the detection conveying device (the first detection conveying device 230 / the second detection conveying device 320) below it. When the diaphragm is conveyed to the position of the first pressing wheel 431 and transitions to the next device (from the front detection transmission line 200 to the back detection transmission line 300), the first pressing wheel 431 can press the diaphragm tightly on the detection conveying device below. By pressing down the first pressing wheel 431, the friction between the diaphragm and the detection conveying device can be increased, so that the detection conveying device can effectively provide the conveying force of the diaphragm to drive the diaphragm to continue moving downstream. During the movement of the diaphragm, the first pressing wheel 431 is pulled by the diaphragm and rotates around its own axis, so that the first pressing wheel 431 and the diaphragm are in rolling friction, avoiding damage to the surface of the diaphragm by the first pressing wheel 431.

[0097] As Figure 6 shown, the transition pressing wheel assembly 430 may further include a pressing wheel sliding seat 433 and an adjusting buffer 434. Among them, the first pressing wheel 431 is slidably arranged on the pressing wheel sliding seat 433 in the vertical direction. Specifically, both ends of the rotating shaft of the first pressing wheel 431 may be provided with pressing wheel fixing seats 435, and positioning pins (not shown in the figure) may be provided on the pressing wheel fixing seats 435. Adjusting holes extending in the vertical direction are opened on the pressing wheel sliding seat 433, and the positioning pins are slidably matched with the adjusting holes, so that the first pressing wheel 431 can float up and down in the vertical direction, so that the height of the first pressing wheel 431 can be automatically adjusted according to the thickness of the diaphragm.

[0098] The adjusting buffer 434 is arranged on the pressing wheel sliding seat 433, and the buffer end of the adjusting buffer 434 acts on the first pressing wheel 431 to provide buffering for the upward movement of the first pressing wheel 431. The adjusting buffer 434 can be fixed on a fixed mounting seat such as the pressing wheel sliding seat 433 by means of threaded cooperation. By using threaded cooperation, the mounting height of the adjusting buffer 434 can be adjusted, and then the pressure exerted by the adjusting buffer 434 on the first pressing wheel 431 can be adjusted.

[0099] The transition pressure roller assembly 430 may further include a pressure roller mounting bracket 432. A strip-shaped hole is formed in the pressure roller mounting bracket 432, and a fastener passes through the strip-shaped hole and is fixed on the pressure roller fixing profile 440, so that the distance between the first pressure roller 431 and the pressure roller fixing profile 440 is adjustable.

[0100] Furthermore, a plurality of first pressure rollers 431 on each pressure roller fixing profile 440 are arranged at intervals. Figure 3 In the illustrated solution, there are three first pressure rollers 431 on each pressure roller fixing profile 440. Those skilled in the art can understand that the number of the first pressure rollers 431 can be set according to actual needs. The arrangement direction of the first pressure rollers 431 on the same pressure roller fixing profile 440 is perpendicular to the transmission direction of the diaphragm.

[0101] Because the size of the diaphragm is large (the maximum product width can reach 1100 mm), if a whole pressure roller is made, there are the following risks:

[0102] 1. It is easy for the long-sized first pressure roller 431 to be deformed during processing, resulting in a gap (at some deformed parts) between the contact surface of the first pressure roller 431 and the diaphragm, resulting in uneven force on the diaphragm and deviation during movement.

[0103] 2. It is not easy to adjust the whole first pressure roller 431 to be parallel to the conveying device below it after installation, and the bearing components on the first pressure roller 431 will be worn during long-term use, shortening the service life.

[0104] In this embodiment, by providing a plurality of first pressure rollers 431, the axial length of a single first pressure roller 431 can be greatly shortened compared with only providing one first pressure roller 431. Therefore, the above problems caused by too long length can be avoided.

[0105] As Figure 5 and Figure 7 shown, along the conveying direction of the diaphragm, the transition assembly 400 further includes a warping prevention assembly 420 arranged on the upstream side of the transparent window. That is, the warping prevention assembly 420 can be arranged only on the upstream side of the transparent window, or the warping prevention assembly 420 can be arranged on both the upstream side and the downstream side of the transparent window.

[0106] The warping prevention assembly 420 includes a warping prevention mounting seat 421 and a warping prevention pressure roller 422 fixed on the warping prevention mounting seat 421. A space for the diaphragm to pass through is formed between the warping prevention pressure roller 422 and the detection transition plate 450. Since the position of the transparent window is the reverse shooting area of the diaphragm, in order to prevent the end of the diaphragm from warping when moving to this position and affecting the shooting effect, the warping prevention assembly 420 is added on the upstream side of the transparent window. The warping prevention pressure roller 422 can limit the vertical position of the diaphragm, avoiding the influence on the shooting effect after the end warps.

[0107] In this embodiment, a plurality of anti-warping pressure rollers 422 are arranged at intervals, and the arrangement direction of each anti-warping pressure roller 422 is perpendicular to the transmission direction of the diaphragm. The reason and effect of arranging a plurality of anti-warping pressure rollers 422 at intervals instead of one can refer to the reason and effect of arranging a plurality of first pressure wheels 431, which will not be elaborated herein.

[0108] As Figure 4 shown, the detection transition plate 450 is provided with an opening, and an embedded step is provided on the inner wall of the opening. A transparent glass 460 is provided on the embedded step to form a transparent window. The present utility model realizes the installation of the transparent glass 460 by providing an embedded step on the inner wall of the opening to support the transparent glass 460.

[0109] As Figure 1 shown, the diaphragm detection mechanism disclosed in the embodiment of the present utility model may further include a first detection-in-place sensor 700, a second detection-in-place sensor 500, and a first controller. Among them, the first detection-in-place sensor 700 is arranged upstream of the first camera assembly 220 and is used to detect whether the diaphragm reaches the front detection position. It should be noted that the front detection position should be slightly ahead of the front detection area, so that when the diaphragm is about to reach the front detection area, it can be detected by the first detection-in-place sensor 700.

[0110] The second detection-in-place sensor 500 is arranged upstream of the second camera assembly 310 and is used to detect whether the diaphragm reaches the back detection position. It should be noted that the back detection position should be slightly ahead of the back detection area, so that when the diaphragm is about to reach the back detection area, it can be detected by the second detection-in-place sensor 500.

[0111] The first controller is used to start the first light source assembly 210 and the first camera assembly 220 when the diaphragm reaches the front detection position, so as to photograph and detect the diaphragm about to enter the front detection area. The first controller is also used to start the second light source assembly 330 and the second camera assembly 310 when the diaphragm reaches the back detection position, so as to photograph and detect the diaphragm about to enter the back detection area.

[0112] In this embodiment, along the transmission direction of the diaphragm, the front detection transmission line 200 is located upstream of the back detection transmission line 300. A front pressure wheel assembly 600 is provided at one end of the front detection transmission line 200 away from the transition assembly 400. Specifically, a front pressure wheel mounting beam 601 can be added to the first light source bracket 211, and the front pressure wheel assembly 600 is mounted on the front pressure wheel mounting beam 601.

[0113] The front pressing wheel assembly 600 at least includes a second pressing wheel 602 capable of rotating about its own axis. The second pressing wheel 602 is configured to be located above the first detection conveying device 230 for pressing the diaphragm. When the diaphragm transitions from the previous device to the front detection transmission line 200, the second pressing wheel 602 can press the diaphragm tightly onto the first detection conveying device 230 below. By pressing down the second pressing wheel 602, the friction between the diaphragm and the first detection conveying device 230 can be increased, so that the first detection conveying device 230 can effectively provide the conveying force of the diaphragm to drive the diaphragm to continue moving downstream. During the movement of the diaphragm, the second pressing wheel 602 is pulled by the diaphragm and rotates about its own axis, so that the second pressing wheel 602 and the diaphragm are in rolling friction, avoiding damage to the surface of the diaphragm by the second pressing wheel 602.

[0114] The front pressing wheel assembly 600 may also include a pressing wheel sliding seat and an adjusting buffer. For the specific structure, reference can be made to the structure of the transition pressing wheel assembly 430, which will not be elaborated in this embodiment.

[0115] Please refer to Figure 8 To detect the position of the diaphragm, in this embodiment, an encoder assembly 800 may also be included. The detection wheel 807 of the encoder assembly 800 acts on the first detection conveying device 230 to detect the running distance of the diaphragm on the first detection conveying device 230. The encoder assembly 800 may include a fixed frame 801, a first rotating shaft 802, an adjusting frame 803, a second rotating shaft 804, a pressure adjusting assembly 805, a swing plate 806, a detection wheel 807, an encoder 808, and a fixing plate 809.

[0116] The fixed frame 801 can be fixed to the bracket on the front detection transmission line 200. One end of the first rotating shaft 802 is arranged on the fixed frame 801, and the other end is rotatably arranged on the adjusting frame 803, so that the adjusting frame 803 can rotate along the first rotating shaft 802. After the adjusting frame 803 is adjusted to a suitable angle, it can be fixed to the first rotating shaft 802. For example, the rotation between the two can be locked by a locking member to fix the adjusting frame 803 to the first rotating shaft 802.

[0117] One end of the swing plate 806 is hinged to the adjusting frame 803 through the second rotating shaft 804. The second rotating shaft 804 can be arranged parallel to the first rotating shaft 802, or the angular relationship between the two can be set according to the actual application scenario. The encoder 808 is connected to the swing plate 806 through the fixing plate 809, so that it can swing together with the swing plate 806, and then drive the encoder 808 and the detection wheel 807 arranged at the output end of the encoder 808 to swing together.

[0118] The pressure regulating assembly 805 may include an adjusting screw and a compression spring. The adjusting screw is in threaded fit with the adjusting bracket 803 and acts on the swing plate 806 through the compression spring, providing the power for the swing plate 806 to swing downward. By adjusting the screwing depth of the adjusting screw, the pressure exerted by the compression spring on the swing plate 806 can be adjusted. In this embodiment, the pressure regulating assembly 805 can provide a pressure acting on the first detection conveying device 230 for the detection wheel 807, increasing the friction between the detection wheel 807 and the first detection conveying device 230, so that the first detection conveying device 230 can drive the detection wheel 807 during the conveying process, and thus the conveying distance of the first detection conveying device 230 can be calculated. Combining with the detection data of the first detection in-place sensor 700, the position of the diaphragm can be calculated.

[0119] The first detection conveying device 230 and the second detection conveying device 320 of the present utility model adopt a porous adsorption belt line to adsorb products, which has the effects of ensuring the flatness of the diaphragm products during movement and providing a stable speed. At the same time, it is equipped with a transition pressure wheel assembly 430 and a front pressure wheel assembly 600 to assist in the pressing method to ensure the smooth transition of the product during detection. The high-speed and efficient detection of large-size products is realized by adjusting the working distance and angle of the vision cameras (the first camera device 223 and the second camera device 312) and the lighting method of the upper and lower light sources. In addition, the present utility model also has the characteristics of realizing stable, orderly and efficient image acquisition and product detection in the full-automatic production through the in-place / waiting fiber optic sensors (the first detection in-place sensor 700, the second detection in-place sensor 500) and the encoder assembly 800.

[0120] During the production process of the diaphragm, its defect detection (such as defects like scratches on the surface of the diaphragm) is an important link to ensure the performance of display devices such as televisions. Since there may be impurities such as remaining debris on the surface of the diaphragm, these impurities will affect the detection yield of the detection process.

[0121] Based on this, in a specific embodiment of the present utility model, a diaphragm cleaning mechanism 900 is provided at the foremost end of the front detection transmission line 200 and the reverse detection transmission line 300 along the transmission direction of the diaphragm. The diaphragm cleaning mechanism 900 is used to clean the surface of the diaphragm. Before the diaphragm is detected, it is cleaned by using the diaphragm cleaning mechanism 900 to remove impurities such as debris and dirt on the surface of the diaphragm, reducing the problem of low detection yield caused by the presence of impurities, as Figures 10 - 15 shown.

[0122] The diaphragm cleaning mechanism 900 disclosed in the embodiment of the present utility model includes a first brush assembly 940 and a cleaning pressure wheel assembly 920. Usually, in order to facilitate the installation of the first brush assembly 940 and the cleaning pressure wheel assembly 920, a cleaning bracket 910 needs to be provided. Of course, those skilled in the art can understand that the cleaning bracket 910 may not be provided, and instead, the first brush assembly 940 and the cleaning pressure wheel assembly 920 may be provided on the structure of other devices. For the convenience of understanding, the following will be introduced by taking the example of having the cleaning bracket 910.

[0123] Among them, the cleaning bracket 910 is a supporting component of the diaphragm cleaning mechanism 900, which is used to provide an installation basis for each component thereon and at the same time realize the installation of the diaphragm cleaning mechanism 900. The shape and structure of the cleaning bracket 910 should be suitable for the installation of the components thereon, and the specific structure of the cleaning bracket 910 is not limited in this embodiment.

[0124] The first brush assembly 940 is arranged on the cleaning bracket 910 and includes a brush. The brush is arranged along the transmission path of the diaphragm to clean the surface of the diaphragm being transmitted. When the diaphragm is conveyed to the position of the first brush assembly 940 along the transmission path, it contacts the brush of the first brush assembly 940, and as the diaphragm continues to be conveyed, a relative movement is generated with the brush of the first brush assembly 940. Under the action of the relative movement, the brush of the first brush assembly 940 sweeps the surface of the diaphragm to remove impurities on the diaphragm.

[0125] Since impurities are more likely to accumulate on the upper surface of the diaphragm, when the brush of the first brush assembly 940 sweeps the surface of the diaphragm, it should preferably sweep the upper surface of the diaphragm, and can also sweep both the upper and lower surfaces of the diaphragm simultaneously or separately.

[0126] The cleaning pressure wheel assembly 920 at least includes a third pressure wheel 923 that can rotate around its own axis. The third pressure wheel 923 does not need to be configured with a power source and can rotate around its own axis under the action of an external force. The third pressure wheel 923 is located in the transmission direction of the diaphragm and is downstream of the first brush assembly 940. The axis of the third pressure wheel 923 is perpendicular to the transmission direction of the diaphragm to prevent the tangent direction of the outer peripheral surface of the third pressure wheel 923 from having an angle with the conveying direction of the diaphragm and deflecting the diaphragm.

[0127] In specific applications, the third pressing wheel 923 is configured to be located above the first detection conveying device 230 and is used to press the diaphragm transmitted from the upstream transmission device onto the first detection conveying device 230. When the diaphragm is conveyed to the position of the third pressing wheel 923 and transitions to the front detection transmission line 200, the third pressing wheel 923 can press the diaphragm tightly on the first detection conveying device 230. By pressing down the third pressing wheel 923, the friction between the diaphragm and the first detection conveying device 230 can be increased, so that the first detection conveying device 230 can effectively provide the conveying force of the diaphragm to drive the diaphragm to continue to be conveyed downstream. During the movement of the diaphragm, the third pressing wheel 923 is pulled by the diaphragm and rotates around its own axis, so that the third pressing wheel 923 and the diaphragm are in rolling friction, avoiding damage to the surface of the diaphragm by the third pressing wheel 923.

[0128] Before detection, the diaphragm can be cleaned by the diaphragm cleaning mechanism 900 to remove impurities on the surface of the diaphragm, thereby reducing the influence of the presence of impurities on the surface of the diaphragm on the detection yield.

[0129] Please refer to Figure 11 , the diaphragm cleaning mechanism disclosed in this embodiment is arranged between the upstream transmission device and the downstream transmission device (i.e., the first detection conveying device 230). In order to enable the first brush assembly 940 to clean both the upper and lower surfaces of the diaphragm, in this embodiment, the brush combination is several brush groups. Each brush group at least includes an upper brush 943 and a lower brush 944 arranged oppositely. The first brush assembly 940 further includes a brush driving device for driving both the upper brush 943 and the lower brush 944 to move towards the diaphragm. The upper brush 943 and the lower brush 944 are arranged oppositely, and the diaphragm is configured to pass between the upper brush 943 and the lower brush 944, so that the upper brush 943 and the lower brush 944 respectively clean the upper surface and the lower surface of the diaphragm.

[0130] The upper brush 943 and the lower brush 944 can be arranged on the cleaning bracket 910 through the brush driving device, and the upper brush 943 and the lower brush 944 are configured to be switched between the cleaning position and the preparation position under the drive of the brush driving device. Specifically, the brush driving device may include an upper brush lifting cylinder 941 and a lower brush lifting cylinder 942. Both the upper brush lifting cylinder 941 and the lower brush lifting cylinder 942 can be fixed on the cleaning bracket 910. The cylinder rod of the upper brush lifting cylinder 941 is connected to the upper brush 943, and the cylinder rod of the lower brush lifting cylinder 942 is connected to the lower brush 944. The upper brush lifting cylinder 941 can drive the upper brush 943 to move up and down, and correspondingly, the lower brush lifting cylinder 942 can drive the lower brush 944 to move up and down.

[0131] The upper brush lifting cylinder 941 and the lower brush lifting cylinder 942 are used to drive the upper brush 943 and the lower brush 944 to move closer to or away from each other. When the upper brush 943 and the lower brush 944 move closer to each other, the upper brush 943 and the lower brush 944 can be in the cleaning position; correspondingly, when the upper brush 943 and the lower brush 944 move away from each other, the upper brush 943 and the lower brush 944 can be in the preparation position.

[0132] When in the cleaning position, the upper brush 943 and the lower brush 944 are respectively in contact with the upper and lower surfaces of the diaphragm, that is, clamping the diaphragm to clean the surface of the diaphragm. During the cleaning process, the upper brush 943 and the lower brush 944 remain stationary while the diaphragm is conveyed and moved, thus generating relative movement to achieve the cleaning action of the brush.

[0133] Since the distance between the upper brush 943 and the lower brush 944 is small when in the cleaning position, even 0 or negative, it is difficult for the diaphragm to pass through between the upper brush 943 and the lower brush 944. It should be noted that being negative means that there is an intersection between the upper brush 943 and the lower brush 944 when not supported by the diaphragm, and being 0 means that the upper brush 943 and the lower brush 944 are in contact with each other when not supported by the diaphragm.

[0134] For the above reasons, in this embodiment, the preparation position of the upper brush 943 and the lower brush 944 is added, that is, when in the preparation position, the distance between the upper brush 943 and the lower brush 944 is greater than the thickness of the diaphragm, so that the upper brush 943 and the lower brush 944 can be separated from the upper and lower surfaces of the diaphragm respectively, facilitating the entry of the next diaphragm into the area between the upper brush 943 and the lower brush 944, and then controlling the upper brush 943 and the lower brush 944 to enter the cleaning position to clean the diaphragm.

[0135] The upper brush 943 and the lower brush 944 of the same brush group are in the same plane in the driving direction of the brush driving device, so that the same brush group is used to clean the same position in the horizontal direction of the diaphragm, respectively cleaning the upper surface and the lower surface at the same horizontal position.

[0136] To improve the smoothness of the up and down movement of the upper brush 943 and the lower brush 944, as Figure 13 shown, cleaning rails 945 are provided on the cleaning bracket 910, and the cleaning rails 945 can be set as two arranged in parallel.

[0137] The upper brush 943 and the lower brush 944 are respectively in sliding fit with the cleaning slide rail 945 through corresponding connecting cross beams. Specifically, both ends of the connecting cross beam are respectively in sliding fit with the cleaning slide rail 945 through sliders. There are two connecting cross beams, and the upper brush 943 and the lower brush 944 are respectively fixed on the corresponding connecting cross beams. The upper brush lifting cylinder 941 and the lower brush lifting cylinder 942 are respectively connected to the corresponding connecting cross beams to respectively drive the upper brush 943 and the lower brush 944 to move up and down along the cleaning slide rail 945.

[0138] In order to improve the cleaning ability, the first brush assembly 940 includes at least two groups of brush sets arranged at intervals along the transmission direction of the diaphragm, and the upper brushes 943 of each brush set are arranged in parallel, and the lower brushes 944 of each brush set are arranged in parallel. That is, in this embodiment, the upper brushes 943 can be set as multiple arranged in parallel, and the corresponding lower brushes 944 should also be set in the same number as the upper brushes 943 and correspond one by one.

[0139] Since both the upper brush 943 and the lower brush 944 have a certain length, if the upper brush 943 and the lower brush 944 are inclined relative to the diaphragm, the distances between different positions of the brushes (the upper brush 943 and the lower brush 944) and the diaphragm will be different, which also makes the acting forces on different positions of the diaphragm different, so the cleaning effects on different positions of the diaphragm will be different.

[0140] Based on this, in this embodiment, adjustment holes extending in the height direction are provided on both the upper brush 943 and the lower brush 944. The number of adjustment holes can be multiple arranged at intervals. The fasteners pass through the adjustment holes and are fastened to the corresponding connecting cross beams. By adjusting the positions of the fasteners on the adjustment holes, the upper brush 943 and the lower brush 944 can be adjusted to be parallel to the diaphragm, and then the fasteners are locked. If the brushes are unevenly worn after being used for a period of time, the brushes can also be adjusted through the fasteners and the adjustment holes so that the side of the brushes facing the diaphragm is parallel to the diaphragm.

[0141] Such as Figure 11 and Figure 12 As shown in, in a specific embodiment of the present invention, the diaphragm cleaning mechanism may further include a cleaning transition plate 930, and the cleaning transition plate 930 is arranged on the cleaning bracket 910. The cleaning transition plate 930 can be fixed to the cleaning bracket 910 through fasteners, and the holes for passing the fasteners can also be adjustment holes extending in the height direction to adjust the height position of the cleaning transition plate 930 to ensure that the cleaning transition plate 930 can be adjusted to a suitable height position.

[0142] Since the diaphragm cleaning mechanism is usually installed at the end of the loading transmission line, in order to smoothly transition the diaphragm passing through the diaphragm cleaning mechanism to the downstream conveying device (i.e., the first detection conveying device 230), a cleaning transition plate 930 is provided between the first brush assembly 940 and the cleaning pressure wheel assembly 920 for carrying the diaphragm. In this embodiment, by supporting the diaphragm with the cleaning transition plate 930, the problem that the diaphragm sags under the action of gravity and cannot smoothly transition downstream during the conveyance to the downstream conveying device can be avoided.

[0143] In an embodiment of the present utility model, the cleaning pressure wheel assembly 920 may further include a pressure wheel lifting drive device 921 disposed on the cleaning bracket 910. The pressure wheel lifting drive device 921 is used to drive the third pressure wheel 923 to switch between a pressing position and a retracted position. The pressure wheel lifting drive device 921 may be a cylinder or other liftable drive devices.

[0144] When the third pressure wheel 923 is in the pressing position, the height position of the third pressure wheel 923 is a position where it can press against the diaphragm and allow the diaphragm to continue to be conveyed along the transmission path; when the third pressure wheel 923 is in the retracted position, the height position of the third pressure wheel 923 is a position where it can avoid the diaphragm. In the present utility model, the pressure wheel lifting drive device 921 drives the third pressure wheel 923 to perform a lifting action. When the third pressure wheel 923 rises to the retracted position, it is convenient for the diaphragm to pass under the third pressure wheel 923 and remain between the third pressure wheel 923 and the first detection conveying device 230. When the third pressure wheel 923 descends to the pressing position, the third pressure wheel 923 can press the diaphragm against the first detection conveying device 230 so that the diaphragm can be continuously conveyed downstream by the first detection conveying device 230.

[0145] In order to enable the upper brush 943, the lower brush 944, and the third pressure wheel 923 to automatically lift according to the application scenario to improve the automation degree of the equipment. In a specific embodiment of the present utility model, a cleaning sensing device 980 and a second controller may be further added.

[0146] Among them, the cleaning sensing device 980 is disposed between the cleaning pressure wheel assembly and the first brush assembly along the transmission direction for detecting whether there is a diaphragm at a preset position on the cleaning transition plate and sending the detection result to the second controller. Based on whether there is a diaphragm detected by the cleaning sensing device 980, the second controller controls the positions of the upper brush 943, the lower brush 944, and the third pressure wheel 923.

[0147] Specifically, when the detection result indicates that there is a diaphragm and the diaphragm is located below the third pressure wheel 923, the second controller is used to control the brush driving device and the pressure wheel lifting driving device 921 to act, so that the upper brush 943 and the lower brush 944 are in the cleaning position, and the third pressure wheel 923 is in the pressing position. The diaphragm being below the third pressure wheel 923 indicates that the head end of the diaphragm has entered the first detection and conveying device 230. At this time, control the upper brush 943 and the lower brush 944 to be in the cleaning position to clamp the diaphragm, and control the third pressure wheel 923 to be in the pressing position to press the head end of the diaphragm on the first detection and conveying device 230. Utilize the power provided by the first detection and conveying device 230 to drive the diaphragm to continue to be conveyed downstream. During the downstream conveyance of the diaphragm, it is cleaned by the upper brush 943 and the lower brush 944.

[0148] To ensure the continuity of the switching of different diaphragms, that is, after the cleaning of the previous diaphragm is completed, it can be ensured that the next diaphragm can smoothly enter the cleaning position for cleaning. In this embodiment, the second controller can also be used to control the brush driving device and the pressure wheel lifting driving device 921 to act when the diaphragm leaves below the third pressure wheel 923, so that the upper brush 943 and the lower brush 944 are in the preparation position, and the third pressure wheel 923 is in the retracted position, facilitating the head end of the next diaphragm to be conveyed below the third pressure wheel 923.

[0149] To ensure that the diaphragm can be smoothly conveyed to the first detection and conveying device 230, when the diaphragm needs to be conveyed below the third pressure wheel 923, the upper brush 943 and the lower brush 944 can be controlled in the cleaning position, and the third pressure wheel 923 can be controlled in the pressing position. Therefore, the downstream part of the diaphragm of the upper brush 943 and the lower brush 944 will not be swept by the upper brush 943 and the lower brush 944, and the impurities in this part cannot be removed.

[0150] Based on this, in this embodiment, on the basis of the above embodiment, a second brush assembly 970 that moves with the third pressure wheel 923 can be added. The second brush assembly 970 is arranged between the third pressure wheel 923 and the first brush assembly 940 along the transmission direction, and the second brush assembly 970 can clean the part between the first brush assembly 940 and the second brush assembly 970.

[0151] When the third pressure wheel 923 is in the pressing position, the second brush assembly 970 contacts the upper surface of the diaphragm on the cleaning transition plate 930. That is, when the third pressure wheel 923 presses the diaphragm to be cleaned, the second brush assembly 970 also presses on the diaphragm to be cleaned on the cleaning transition plate 930, and the diaphragm to be cleaned is cleaned during the movement of the diaphragm to be cleaned. Due to space limitations, the second brush assembly 970 can only be arranged above the cleaning transition plate 930 to clean the upper surface of the diaphragm to be cleaned.

[0152] When the third pressing wheel 923 is in the retracted position, the second brush assembly 970 is separated from the upper surface of the diaphragm on the cleaning transition plate 930. That is, when the third pressing wheel 923 retracts to make way for the diaphragm to be cleaned, the second brush assembly 970 also moves away from the cleaning transition plate 930 to facilitate the entry of the next diaphragm.

[0153] In this embodiment, the cleaning sensing device 980 is disposed between the first brush assembly 940 and the second brush assembly 970. When the cleaning sensing device 980 detects a diaphragm, the diaphragm is still at a certain distance from the third pressing wheel 923. The time for the diaphragm to continue to be conveyed can be controlled according to the size of the above distance and the conveying speed of the feeding transmission line, so that after a certain period of time, the diaphragm just moves to the lower part of the third pressing wheel 923.

[0154] Therefore, in this embodiment, when the cleaning sensing device 980 detects a diaphragm and after a preset time, the diaphragm is located below the third pressing wheel 923, the brush driving device and the pressing wheel lifting driving device 921 are controlled to act, so that the upper brush 943 and the lower brush 944 are in the cleaning position and the third pressing wheel 923 is in the pressing position; when the cleaning sensing device 980 does not detect a diaphragm and after a preset time, the diaphragm leaves the lower part of the third pressing wheel 923, the brush driving device and the pressing wheel lifting driving device 921 are controlled to act, so that the upper brush 943 and the lower brush 944 are in the ready position and the third pressing wheel 923 is in the retracted position.

[0155] In a specific embodiment of the present invention, the third pressing wheel 923 can be one or a plurality of spaced-apart ones. When there are a plurality of third pressing wheels 923, the arrangement direction of each third pressing wheel 923 is perpendicular to the transmission direction of the diaphragm. For the convenience of installing each third pressing wheel 923, each third pressing wheel 923 can be installed on the pressing wheel mounting beam 922, and the pressing wheel lifting driving device 921 can be connected to the pressing wheel mounting beam 922 to drive the pressing wheel mounting beam 922 and each third pressing wheel 923 on the pressing wheel mounting beam 922 to perform a lifting action.

[0156] Since the size of the diaphragm is relatively large (the maximum product width can reach 1100 mm), if a single-piece third pressing wheel 923 (i.e., only one third pressing wheel 923 is provided) is made, there are the following risks:

[0157] 1. It is easy for the long-sized third pressing wheel 923 to be deformed during processing, resulting in a gap (at some deformed parts) at the contact surface between the third pressing wheel 923 and the diaphragm after pressing, causing uneven force on the diaphragm and resulting in deviation during movement;

[0158] 2. It is not easy to adjust the parallelism between the single-piece third pressing wheel 923 and the first detection conveying device 230 after installation, and the bearing components on the third pressing wheel 923 will be worn during long-term use, shortening the service life.

[0159] In this embodiment, a plurality of third pressing wheels 923 are provided, which can greatly shorten the axial length of a single third pressing wheel 923 compared with only one third pressing wheel 923 being provided. Therefore, the above problems caused by excessive length can be avoided.

[0160] In order to improve the stability of the lifting of the third pressing wheel 923, in this embodiment, a pressing wheel lifting guiding assembly 950 can also be provided. The pressing wheel lifting guiding assembly 950 includes a pressing wheel lifting slide rail 951 and a pressing wheel lifting slide block 952. The pressing wheel lifting slide rail 951 is arranged on the cleaning bracket 910, and the pressing wheel lifting slide block 952 is arranged on the pressing wheel mounting beam 922 and is slidably matched with the pressing wheel lifting slide rail 951. The sliding direction of the pressing wheel lifting slide block 952 along the pressing wheel lifting slide rail 951 is the same as the lifting output direction of the pressing wheel lifting driving device 921. It should be noted that, in order to limit the position of the third pressing wheel 923 so that the third pressing wheel 923 can be lifted within a safe range, a pressing wheel limiting device 960 can also be added to the cleaning bracket 910. When the third pressing wheel 923 rises to the upper limit position, the pressing wheel mounting beam 922 is blocked by the pressing wheel limiting device 960, and the third pressing wheel 923 cannot continue to rise.

[0161] In order to collect the impurities swept away and prevent the swept impurities from polluting the surrounding environment, in this embodiment, an impurity receiving box 911 is also added, as Figure 14 shown.

[0162] The impurity receiving box 911 is arranged directly below the first brush assembly 940 and the cleaning pressing wheel assembly 920. It should be noted that the impurity receiving box 911 is a box body with an open top. After the first brush assembly 940 and the second brush assembly 970 sweep the impurities on the surface of the diaphragm, they can fall into the impurity receiving box 911. Specifically, when the diaphragm passes through the first brush assembly 940 along the transmission path, it is swept by the upper brush 943 and the lower brush 944 of the first brush assembly 940. Under the action of the upper brush 943 and the lower brush 944, the impurities on the lower surface of the diaphragm and the columnar materials remaining in the through holes of the diaphragm can fall into the impurity receiving box 911 under the action of gravity; the impurities on the upper surface of the diaphragm and the columnar materials remaining in the through holes of the diaphragm are gradually pushed by the upper brush 943 towards the end of the diaphragm (i.e., the end along the conveying direction). When the diaphragm leaves the first brush assembly 940, the impurities on the upper surface of the diaphragm and the columnar materials remaining in the through holes of the diaphragm lose the support of the diaphragm and fall into the impurity receiving box 911 under the action of gravity.

[0163] Although the impurities swept away by the second brush assembly 970 will be supported by the clean transition plate 930, the area of ​​the diaphragm acted on by the second brush assembly 970 is small, so this effect can be ignored; in addition, some of the impurities swept away by the second brush assembly 970 will be lifted up by the airflow, and eventually some will gradually fall into the impurity receiving box 911 or other locations due to gravity. The operator only needs to clean the dust falling position and the clean transition plate 930 regularly.

[0164] The impurity receiving box 911 can be slidably disposed directly below the first brush assembly 940 and the cleaning pressure wheel assembly 920. When there are a lot of impurities in the impurity receiving box 911, the impurity receiving box 911 can be pulled out to dump the impurities contained therein.

[0165] Furthermore, the membrane cleaning mechanism 900 may also include an impurity guide 912, which is used to guide the cleaned impurities to the impurity receiving box 911. The impurity guide 912 may have an inclined surface, and the cleaned impurities first fall on the inclined surface, and then fall into the impurity receiving box 911 under the guidance of the inclined surface.

[0166] The embodiment of the utility model further discloses a diaphragm defect detection device, which includes a feeding transmission line 1000 and a diaphragm detection mechanism, and the diaphragm detection mechanism is the diaphragm detection mechanism disclosed in the above embodiment. The diaphragm defect detection device disclosed in the embodiment of the utility model has all the technical effects of the above diaphragm detection mechanism because it has the above diaphragm detection mechanism, which will not be described in detail herein.

[0167] The feeding transmission line 1000 may include a feeding bracket 1001, a conveying roller 1004 and a feeding conveyor belt 1003. There are multiple conveying rollers 1004, all of which are rotatably supported on the feeding bracket 1001. The feeding conveyor belt 1003 is driven by driving rollers at both ends for transmission. The driving roller at one end of the feeding conveyor belt 1003 is an active roller, and the other end is a driven roller. The driven roller and the active roller are respectively located at both ends of the conveying roller group (composed of all conveying rollers 1004). The feeding bracket 1001 may also be provided with an electric cabinet 1002 and a start / stop button assembly 1005.

[0168] Furthermore, the diaphragm cleaning mechanism 900 is disposed at the end of the feeding transmission line 1000 . The feeding transmission line 1000 is used to receive upstream incoming materials and transport the diaphragms downstream. When transported to the end, the diaphragms are cleaned by the diaphragm cleaning mechanism 900 .

[0169] When the diaphragm is conveyed on the loading transmission line 1000, due to uneven force or different angles and positions when placed on the loading transmission line 1000, etc., the position of the diaphragm on the loading transmission line 1000 will be uncertain, and there is a risk that the diaphragm cannot pass through the diaphragm cleaning mechanism 900 because it does not correspond to the diaphragm cleaning mechanism 900.

[0170] Please refer to Figure 16 As shown, a centering positioning module 1100 is installed on the loading transmission line 1000. The centering positioning module 1100 is used to center and position the diaphragm so that the diaphragm is centered and positioned by the centering positioning module 1100 before entering the diaphragm cleaning mechanism 900 for cleaning. In this embodiment, the position of the diaphragm on the loading transmission line 1000 is positioned by the centering positioning module 1100, so that no matter what causes the diaphragm to be skewed, it can be centered with the diaphragm cleaning mechanism 900 due to the positioning of the centering positioning module 1100, avoiding the risk of not being able to pass through the diaphragm cleaning mechanism 900.

[0171] In this embodiment, the centering positioning module 1100 may include a fixed bottom plate 1101, a synchronous belt system, and a positioning moving member 1103. Among them, the fixed bottom plate 1101 can be fixed on the loading bracket 1001 or on other devices that can be fixed and are stationary.

[0172] The synchronous belt system is arranged on the fixed bottom plate 1101. The synchronous belt system may include a synchronous belt pulley 1105 and a synchronous belt 1106. One of the synchronous belt pulleys 1105 is a driving belt pulley (driven by a driving motor), and the other synchronous belt pulley 1105 is a driven belt pulley. The two synchronous belt pulleys 1105 are rotatably arranged on the fixed bottom plate 1101 so that the synchronous belt 1106 can be driven to move.

[0173] There are two positioning moving members 1103. The synchronous belt 1106 is divided into two parallel parts by the synchronous belt pulley 1105. The movement directions of these two parts are opposite and the movement speeds are the same. One of the positioning moving members 1103 is fixedly connected to one side synchronous belt of the synchronous belt system, and the other positioning moving member 1103 is fixedly connected to the other side synchronous belt of the synchronous belt system, so that the movement directions of the two positioning moving members 1103 are opposite and the movement speeds are the same. By controlling the rotation direction of the synchronous belt pulley 1105, the two positioning moving members 1103 can be driven to move closer to or away from each other. When the positioning moving members 1103 move closer to each other, the diaphragm between the two positioning moving members 1103 can be clamped to center and position the skewed diaphragm.

[0174] The positioning moving member 1103 is provided with a positioning post 1107, and the positioning post 1107 extends out of the upper surface of the loading transmission line 1000. Specifically, the centering positioning module 1100 can be arranged below the conveying roller 1004, and the positioning post 1107 extends out of the upper surface of the loading transmission line 1000 through the gap between two adjacent conveying rollers 1004 to clamp the diaphragm conveyed on the loading conveyor belt 1003 and position the diaphragm at the middle position between the two positioning moving members 1103. Therefore, when installing the centering positioning module 1100, it is only necessary to ensure that the middle position between the two positioning moving members 1103 is the desired position of the diaphragm.

[0175] Please combine Figure 15 In order to control the opening and closing timing of the positioning moving member 1103, in this embodiment, the loading transmission line 1000 is further provided with a material arrival sensor 1006. When the material arrival sensor 1006 detects the diaphragm, the synchronous belt system drives the positioning moving members 1103 to move closer to each other. Correspondingly, when the material arrival sensor 1006 does not detect the diaphragm, the synchronous belt system drives the positioning moving members 1103 to move away from each other. It should be noted that the stop positions of the positioning moving members 1103 when moving closer to each other and when moving away from each other can be controlled by the synchronous belt system.

[0176] A guiding slide rail 1102 can be arranged on the fixed bottom plate 1101, and a guide rail slider 1104 that is slidably matched with the guiding slide rail 1102 can be arranged on the positioning moving member 1103. In order to restrict the moving range of the positioning moving member 1103, a moving member limiting block 1108 is further arranged on the fixed bottom plate 1101. The moving member limiting block 1108 is arranged at the position of the guiding slide rail 1102 to cooperate with the guide rail slider 1104 for limiting. When the guide rail slider 1104 moves to the position of the moving member limiting block 1108, it interferes with the moving member limiting block 1108 to limit the continuous movement of the positioning moving member 1103. In addition, a moving member limiting sensor 1109 can be added to detect the position of the positioning moving member 1103 through the moving member limiting sensor 1109, and when it is detected that the positioning moving member 1103 reaches the position of the moving member limiting sensor 1109, the synchronous belt system is controlled to stop.

[0177] The working process of the diaphragm defect detection device disclosed in the embodiment of the present utility model is as follows:

[0178] After the diaphragm is placed on the feeding conveyor belt 1003, the in-feed sensor 1006 senses the arrival of the diaphragm. The centering positioning module 1100 achieves centering positioning of the diaphragm. Subsequently, the feeding conveyor belt 1003 transports the diaphragm forward and into the diaphragm cleaning mechanism 900. The cleaning sensor 980 senses the diaphragm. The third pressure wheel 923 descends, and the first detection and conveying device 230 drives the diaphragm forward. The upper brush 943 and the lower brush 944 are driven by the upper brush lifting cylinder 941 and the lower brush lifting cylinder 942 to clamp the front and back sides of the diaphragm for cleaning. During the cleaning process, the impurities being cleaned flow into the lower impurity receiving box 911. After the third pressure wheel 923 drives the diaphragm out, the third pressure wheel 923 rises, and the upper brush 943 and the lower brush 944 return to their original positions, waiting for the next diaphragm to enter.

[0179] It should be noted that the embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0180] As shown in this application and the claims, unless the context clearly indicates an exceptional situation, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, commodity, or device including the element.

[0181] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0182] In this article, specific examples are used to elaborate on the principles and implementation manners of the present utility model. The descriptions of the above embodiments are only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A membrane detection mechanism, characterized in that: It comprises a front side detection transmission line (200), a back side detection transmission line (300), and a transition component (400) arranged between the front side detection transmission line (200) and the back side detection transmission line (300); The front detection transmission line (200) comprises a first detection conveying device (230), a first light source assembly (210) and a first camera assembly (220), wherein the first detection conveying device (230) is used to convey the film, and the first light source assembly (210) and the first camera assembly (220) are used to perform lighting, photographing and detection on the front side of the film; The transition assembly (400) comprises a detection transition plate (450), wherein the detection transition plate (450) is provided with a transparent window; The back surface detection transmission line (300) comprises a second detection conveying device (320), a second light source assembly (330) and a second camera assembly (310); the second light source assembly (330) is arranged below the transparent window and is used to illuminate the back surface of the film; the second camera assembly (310) is arranged above the transparent window and is used to photograph and detect the back surface of the film.

2. The membrane detection mechanism according to claim 1, characterized in that: The transition assembly (400) further comprises: There are two pressure wheel fixing profiles (440), which are respectively fixed on two sides of the detection transition plate (450) along the conveying direction of the diaphragm; A transition pressure wheel assembly (430), each of the pressure wheel fixing profiles (440) is provided with the transition pressure wheel assembly (430), the transition pressure wheel assembly (430) at least includes a first pressure wheel (431) that can rotate around its own axis, the axis of the first pressure wheel (431) is perpendicular to the transmission direction of the diaphragm, and the first pressure wheels (431) located on the two pressure wheel fixing profiles (440) are respectively configured to be located above the first detection conveying device (230) and the second detection conveying device (320) for crimping the diaphragm.

3. The membrane detection mechanism according to claim 2, characterized in that: The transition pressure wheel assembly (430) further includes: A pressure wheel slide seat (433), wherein the first pressure wheel (431) is arranged on the pressure wheel slide seat (433) so as to slide in a vertical direction; An adjusting buffer (434) is arranged on the pressure wheel slide seat (433), and a buffer end of the adjusting buffer (434) acts on the first pressure wheel (431).

4. The membrane detection mechanism according to claim 2, characterized in that: The first pressing wheels (431) on each of the pressing wheel fixing profiles (440) are multiple and arranged at intervals, and the arrangement direction of each of the first pressing wheels (431) on the same pressing wheel fixing profile (440) is perpendicular to the transmission direction of the diaphragm.

5. The membrane detection mechanism according to claim 1, characterized in that: Along the conveying direction of the diaphragm, the transition component (400) further includes an anti-warping component (420) arranged on the upstream side of the transparent window, the anti-warping component (420) includes an anti-warping mounting seat (421) and an anti-warping pressure roller (422) fixed on the anti-warping mounting seat (421), and a space for the diaphragm to pass through is formed between the anti-warping pressure roller (422) and the detection transition plate (450).

6. The membrane detection mechanism according to claim 5, characterized in that: The anti-warping pressure rollers (422) are multiple and arranged at intervals, and the arrangement direction of each of the anti-warping pressure rollers (422) is perpendicular to the transmission direction of the film.

7. The membrane detection mechanism according to claim 1, characterized in that: The detection transition plate (450) is provided with an opening, an inner wall of the opening is provided with an embedded step, and transparent glass is provided on the embedded step to form the transparent window.

8. The membrane detection mechanism according to claim 1, characterized in that: Also includes: A first detection position sensor (700) is arranged upstream of the first camera assembly (220) and is used to detect whether the film has reached the front detection position on the front detection transmission line (200); A second detection position sensor (500) is arranged upstream of the second camera assembly (310) and is used to detect whether the diaphragm has reached the reverse detection position on the transition assembly (400); The first controller starts the first light source assembly (210) and the first camera assembly (220) when the film reaches the front detection position, and starts the second light source assembly (330) and the second camera assembly (310) when the film reaches the back detection position.

9. The membrane detection mechanism according to claim 1, characterized in that: Along the transmission direction of the film, the front detection transmission line (200) is located upstream of the back detection transmission line (300); A front pressure wheel assembly (600) is provided at one end of the front detection transmission line (200) away from the transition assembly (400), and the front pressure wheel assembly (600) includes at least a second pressure wheel (602) that can rotate around its own axis, and the second pressure wheel (602) is configured to be located above the first detection conveying device (230) for crimping the diaphragm.

10. The membrane detection mechanism according to claim 1, characterized in that: It also includes an encoder assembly (800), wherein a detection wheel (807) of the encoder assembly (800) acts on the first detection conveying device (230) to detect the running distance of the membrane on the first detection conveying device (230).

11. The membrane detection mechanism according to any one of claims 1 to 10, characterized in that: A diaphragm cleaning mechanism (900) is provided at the front end of the front detection transmission line (200) and the back detection transmission line (300) along the transmission direction of the diaphragm, and the diaphragm cleaning mechanism (900) is used to clean the surface of the diaphragm.

12. The membrane detection mechanism according to claim 11, characterized in that: The diaphragm cleaning mechanism (900) comprises: A first brush assembly (940), comprising a brush, wherein the brush is arranged along a transmission path of the diaphragm to clean the surface of the diaphragm being transmitted; A cleaning pressure wheel assembly (920), comprising at least a third pressure wheel (923) capable of rotating around its own axis, wherein the third pressure wheel (923) is located in the transmission direction of the diaphragm and downstream of the first brush assembly (940), the axis of the third pressure wheel (923) is perpendicular to the transmission direction of the diaphragm, and the third pressure wheel (923) is configured to be located above the first detection conveying device, and is used to press the diaphragm transmitted from the upstream transmission device onto the first detection conveying device; A cleaning transition plate (930) is located between the first brush assembly (940) and the cleaning pressure wheel assembly (920), and the cleaning transition plate (930) is used to support the diaphragm.

13. The membrane detection mechanism according to claim 12, characterized in that: The brush assembly is composed of a plurality of brush groups, each of which includes at least an upper brush (943) and a lower brush (944) arranged relatively to each other, and the first brush assembly (940) further includes a brush driving device for driving the upper brush (943) and the lower brush (944) to move toward the diaphragm, and the diaphragm is configured to pass between the upper brush (943) and the lower brush (944); The upper brush (943) and the lower brush (944) are configured to be driven by the brush driving device to switch between a cleaning position and a preparation position; When in the cleaning position, the upper brush (943) and the lower brush (944) are in contact with the upper and lower surfaces of the diaphragm respectively; When in the preparation position, the upper brush (943) and the lower brush (944) are separated from the upper and lower surfaces of the diaphragm, respectively.

14. The membrane detection mechanism according to claim 13, characterized in that: The cleaning pressure wheel assembly (920) further comprises a pressure wheel lifting drive device (921), wherein the pressure wheel lifting drive device (921) is used to drive the third pressure wheel (923) to switch between a pressing position and a free position; When in the pressing position, the height position of the third pressing wheel (923) is a position capable of pressing against the diaphragm and allowing the diaphragm to continue to be transported along the transport path; When in the clearing position, the height position of the third pressure wheel (923) is such that it can avoid the diaphragm.

15. The membrane detection mechanism according to claim 14, characterized in that: Also includes: a cleaning sensing device (980) and a second controller; The cleaning sensing device (980) is arranged between the cleaning pressure wheel assembly and the first brush assembly along the transmission direction, and is used to detect whether there is the diaphragm at a preset position on the cleaning transition plate, and send the detection result to the second controller; The second controller is used to control the brush drive device and the pressure wheel lifting drive device (921) to operate when the detection result indicates that there is a diaphragm and the diaphragm is located below the third pressure wheel (923), so that the upper brush (943) and the lower brush (944) are in the cleaning position and the third pressure wheel (923) is in the pressing position.

16. The membrane detection mechanism according to claim 15, characterized in that: The second controller is also used to control the brush drive device and the pressure wheel lifting drive device (921) to operate when the diaphragm is transported away from under the third pressure wheel (923), so that the upper brush (943) and the lower brush (944) are in the ready position and the third pressure wheel (923) is in the out of the way position.

17. The membrane detection mechanism according to claim 15, characterized in that: It also includes a second brush assembly (970) that moves with the third pressing wheel (923), and the second brush assembly (970) is arranged between the third pressing wheel (923) and the first brush assembly (940) along the transmission direction; When the third pressing wheel (923) is in the pressing position, the second brush assembly (970) contacts the upper surface of the diaphragm on the cleaning transition plate (930); When the third pressure wheel (923) is in the clear position, the second brush assembly (970) is separated from the upper surface of the diaphragm on the cleaning transition plate (930).

18. A membrane defect detection device, characterized in that: It comprises a feeding transmission line (1000) and a diaphragm detection mechanism, wherein the diaphragm detection mechanism is the diaphragm detection mechanism as described in any one of claims 1 to 17.

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