Film appearance detection equipment

Abstract

The invention relates to the technical field of detection equipment, and particularly discloses film appearance detection equipment which comprises a feeding device, a transfer device and a detection device, the transfer device is used for transferring films stacked on the feeding device to the detection device, and the feeding device comprises a material disc and a first blowing structure; the first air blowing structure blows air towards the top of the membrane stack, the transfer device comprises a mounting plate and a suction cup, the suction cup comprises a base and a disc body connected to the base in a telescopic mode, a negative pressure hole is formed in the disc body, and a first cavity communicating with the negative pressure hole is formed between the base and the disc body; in the initial state that the diaphragm just makes contact with the suction cup, the adsorption face of the suction cup is a plane, under the action of negative pressure suction, the disc body adsorbs and grabs the diaphragm firstly, along with continuous negative pressure suction, based on the blocking effect of the diaphragm on the negative pressure hole, the first cavity can be in a negative pressure state, and then cavity shrinkage occurs; according to the utility model, the two adjacent diaphragms are bent and deformed, so that the diaphragms which are in adsorption contact with the disc body are bent and deformed, and based on the arc-shaped bending change, seams are formed at the edges of the two adjacent diaphragms more easily, and air flow enters the space between the two adjacent diaphragms through the seams more easily, so that a vacuum area and electrostatic adhesion between the two adjacent diaphragms are eliminated; and the sucking disc only grabs one diaphragm, so that the accuracy of appearance detection of the diaphragm is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a film appearance detection equipment. Background Art

[0002] Adhesive films are widely used in electronic products such as mobile phones and televisions. However, during the production process, due to various factors, the adhesive films may have problems such as stains, scratches, and warping. These problems not only affect the aesthetics of the adhesive film, but may also affect its performance and service life. Therefore, it is crucial to conduct appearance inspection of the adhesive film.

[0003] In the related art, a visual inspection system is usually used to perform appearance inspection on film products. The visual inspection system can accurately identify various defects in film products, such as bubbles, broken glue, leaking glue, uneven glue coating, etc. This high-precision identification capability helps to reduce the defective rate and improve product quality. However, in the related art, a suction cup device is usually used to place the film on the visual inspection station. In the process of the suction cup device grabbing the film, there is a situation where two or even more films are grabbed at one time, which affects the accuracy of the visual inspection system. If multiple adhered films are peeled off by human interference, the smoothness of the visual inspection system will be reduced, resulting in reduced inspection efficiency. Summary of the invention

[0004] The invention discloses a film appearance detection device to solve the above technical problems existing in the related technology.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: The present application provides a film appearance inspection device, which includes a feeding device, a transfer device and a detection device, wherein the transfer device is used to transfer the film sheets stacked on the feeding device to the detection device; wherein: The feeding device comprises a material tray and a first blowing structure, the membranes are stacked on the material tray to form a membrane pile, the first blowing structure is provided with a first air hole, and the first air hole is configured to blow air toward the top of the membrane pile to separate the membrane on the top layer and the membrane on the second top layer from each other; The transfer device includes a mounting plate and a suction cup arranged on the mounting plate, the suction cup includes a base and a disc body telescopically connected to the base, the disc body is provided with a negative pressure hole, a first cavity connected to the negative pressure hole is formed between the base and the disc body, the suction cup has a first state and a second state, in the first state, the adsorption surface of the disc body is a convex plane, in the second state, the disc body is attached to the base so that the adsorption surface changes into a curved surface, and the suction cup is configured to switch from the first state to the second state under the action of negative pressure suction.

[0006] Furthermore, the disc body is provided with a plurality of deformation grooves on a side facing the base.

[0007] Furthermore, the base has an attachment surface facing the disk body, the attachment surface is a convex arc surface, and in the second state, the disk body is attached to the attachment surface; the base also has a guide groove on the attachment surface, and the guide groove extends from the high point of the attachment surface to the low point of the attachment surface.

[0008] Furthermore, the feeding device further comprises a second blowing structure, the blowing direction of the second blowing structure is toward the adsorption surface of the suction cup, and the blowing direction of the second blowing structure is higher than the blowing direction of the first blowing structure.

[0009] Furthermore, the second blowing structure is provided with second air holes, which are in the shape of longitudinally extending long strips. When the suction cup is in the second state, the length of the second air holes distributed above the diaphragm is greater than the length of the second air holes distributed below the diaphragm.

[0010] Furthermore, the feeding device also includes a friction structure, which is arranged on the first blowing structure. Along the longitudinal direction, at least part of the friction structure overlaps with the first air hole, and the lower part of the first air hole exceeds the friction structure. The friction structure is used to frictionally contact with the diaphragm.

[0011] Furthermore, the base includes a seat body and a base connected to the seat body. In the second state, the disc body is attached to the base body, and a second cavity is provided between the base body and the seat body. The second cavity is configured to shrink the base body relative to the seat body in a suction state.

[0012] Furthermore, a support member is provided on the mounting plate, and the support member corresponds to the edge of the diaphragm. When the base body contracts relative to the seat body, the support member abuts against the edge of the diaphragm to cause the diaphragm to bend and deform.

[0013] Furthermore, the suction cup includes two adsorption units arranged opposite to each other, and the distance between the two adsorption units is adjustable.

[0014] Furthermore, the mounting plate is provided with a slide groove extending along the first direction, and the adsorption unit can slide along the slide groove and be connected and fixed to the mounting plate through a connecting piece.

[0015] The technical solution adopted by the present invention can achieve the following beneficial effects: The film appearance detection equipment of the present application has a flat surface when the diaphragm just contacts the suction cup in the initial state, which can ensure the uniformity and stability of the contact with the diaphragm. Under the action of negative pressure suction, the disc will first adsorb and grab the diaphragm. As the negative pressure suction continues, based on the blocking effect of the diaphragm on the negative pressure hole, the first cavity can be in a negative pressure state and then the cavity shrinks. During the contraction of the first cavity, the disc gradually adheres to the base to change the adsorption surface into a convex arc surface, thereby causing the diaphragm in adsorption contact with the disc to bend and deform. When the suction cup absorbs at least two diaphragms, based on this arc bending change, it is easier to form a slit at the edge of the two adjacent diaphragms, so that the airflow blown out by the first blowing structure can more easily enter between the two adjacent diaphragms through the slit, thereby eliminating the vacuum area and electrostatic adhesion between the two adjacent diaphragms. The two adjacent diaphragms are automatically separated due to the disappearance of the adhesion force, so that the suction cup only grabs one diaphragm, thereby ensuring the accuracy of the diaphragm appearance detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic structural diagram of a film appearance detection device according to an embodiment of the present application; Figure 2 It is a structural schematic diagram of a feeding device in an embodiment of the present application; Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 It is one of the structural schematic diagrams of the transfer device of the embodiment of the present application; Figure 5 This is the second structural schematic diagram of the transfer device in the embodiment of the present application; Figure 6 is a schematic cross-sectional view of a suction cup according to an embodiment of the present application; Figure 7 This is one of the schematic diagrams of the cooperation of the transfer device at the loading device of the embodiment of the present application; Figure 8 This is the second schematic diagram of the cooperation of the transfer device at the loading device of the embodiment of the present application; Fig. 9 This is the third schematic diagram of the cooperation of the transfer device at the loading device of the embodiment of the present application; In the figure: 100, feeding device; 110, material tray; 120, first blowing structure; 121, first air hole; 130, second blowing structure; 131, second air hole; 140, third blowing structure; 141, third air hole; 150, friction structure; 200, transfer device; 210, mounting plate; 211, slide groove; 220, suction cup; 221, base; 2211, seat body; 2212, base body; 2212a, attachment surface; 2212b, guide groove; 2213, second cavity; 2214, cylindrical elastic membrane; 222, tray body; 2221, negative pressure hole; 2222, deformation groove; 223, first cavity; 224, corrugated cover; 230, support member; 300, detection device; 400, diaphragm; 510, connecting member. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0020] The following is combined with Figures 1 to 9 , the film appearance detection equipment provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0021] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The embodiment of the present application discloses a film appearance inspection device, which includes a loading device 100, a transfer device 200 and a detection device 300, wherein a film sheet 400 is stacked at the loading device 100, and the transfer device 200 is used to transfer the film sheet 400 stacked at the loading device 100 to the detection device 300 for appearance inspection. In the embodiment of the present application, the detection device 300 can be a visual inspection system of the prior art. The visual inspection system adopts a high-resolution camera and advanced image processing algorithms, and can accurately identify various defects in the film sheet 400 product, such as bubbles, broken glue, leaking glue, uneven glue coating, etc., without manual intervention, and has the characteristics of accurate detection and high detection efficiency.

[0022] In the examples of this application, see Figure 2 and Figure 3 The loading device 100 includes a material tray 110 and a first blowing structure 120. A plurality of membranes 400 are stacked on the material tray 110 to form a membrane pile. The loading device 100 also includes a lifting mechanism (not shown in the figure). The lifting mechanism is used to push the membrane pile intermittently upward so that the top layer of the membrane 400 in the membrane pile is grabbed by the transfer device 200 at a preset height position and transferred to the detection device 300.

[0023] In the embodiment of the present application, the first blowing structure 120 can be arranged on the material tray 110, or it can be arranged adjacent to the material tray 110, so that the two can be kept in a relatively fixed state, and this application will not elaborate on this. Exemplarily, the first blowing structure 120 can be a longitudinally extending columnar or strip-shaped pipe arranged on the material tray 110, which has a hollow inner cavity, and the first blowing structure 120 is provided with a first air hole 121 connected to the hollow inner cavity. Exemplarily, the first air hole 121 can be a longitudinally extending strip hole, and the blowing direction of the first air hole 121 is toward the top of the diaphragm stack. Blowing air to the top of the diaphragm stack through the first air hole 121 makes it easy to separate the diaphragm 400 located on the top layer of the diaphragm stack from the diaphragm stack, so that the transfer device 200 can easily grasp the single diaphragm 400 when grasping the diaphragm 400, thereby ensuring the accuracy of the detection of the diaphragm 400 at the detection device 300.

[0024] However, the inventors discovered during the research process that even if the first blowing structure 120 is provided at the edge of the material tray 110, because the surface of the diaphragm 400 is relatively smooth and the two adjacent diaphragms 400 are in close contact and almost completely isolated from the air, a local vacuum is easily formed between the two adjacent diaphragms 400. In addition, due to the electrostatic adhesion that may exist between the two adjacent diaphragms 400, the two diaphragms 400 are easily adhered to each other. Since the mass of the diaphragm 400 is relatively light, when the first blowing structure 120 blows and separates the top layer of diaphragm 400, the blown and separated diaphragms 400 may still be adhered to each other, which is usually manifested as 2 to 3 diaphragms 400 being blown up at the same time and grabbed by the transfer device 200, resulting in inaccurate detection and missed detection.

[0025] Based on this situation, in the embodiment of the present application, please refer to FIG. Figure 4 , Figure 5 and Figure 6 The transfer device 200 includes a mounting plate 210 and a suction cup 220 disposed on the mounting plate 210. For example, two suction cups 220 may be disposed on the mounting plate 210. The two suction cups 220 may be distributed along the width direction of the mounting plate 210, and the membrane 400 may be adsorbed and grasped by the two suction cups 220. Specifically, the suction cup 220 includes a base 221 and a disc body 222, wherein the disc body 222 is telescopically connected to the base 221. Exemplarily, the disc body 222 can be telescopically connected to the base 221 through a bellows 224, so that a first cavity 223 is formed between the disc body 222 and the base 221, and the first cavity 223 is connected to the negative pressure source through a negative pressure pipe. The disc body 222 is provided with a negative pressure hole 2221 that is connected to the first cavity 223 and passes through the disc body 222. The base 221 has an attachment surface 2212a facing the disc body 222, and the attachment surface 2212a is a convex arc surface. The disc body 222 has an adsorption surface facing away from the base 221.

[0026] In the embodiment of the present application, the suction cup 220 has a first state and a second state. Specifically, in the first state, that is, when the suction cup 220 is not connected to the negative pressure source, the disk body 222 is in an extended state relative to the base 221, and the adsorption surface of the disk body 222 is a plane. In the second state, the suction cup 220 is connected to the negative pressure source and the disk body 222 is contracted relative to the base 221. The disk body 222 is attached to the attachment surface 2212a of the base 221 and the adsorption surface is adaptively changed into a curved surface. It can be understood that the suction cup 220 can switch from the first state to the second state under the suction action of the negative pressure source.

[0027] It should be noted that, in the embodiment of the present application, the disc body 222 is usually made of a soft and sealing material to ensure that the disc body 222 forms a seal when in contact with the diaphragm 400, thereby creating a vacuum or air pressure difference. At the same time, based on the soft characteristics of the disc body 222, the disc body 222 has the ability to deform to adapt to the switching between the first state and the second state. For example, the disc body 222 can be a structural member made of rubber, silicone, polyurethane or TPE material. It can be understood that in the embodiment of the present application, if the suction cup 220 needs to be switched from the first state to the second state, the disc body 222 needs to be adsorbed with the diaphragm 400 to block the negative pressure hole 2221, so as to create a negative pressure environment for the first cavity 223, and then drive the disc body 222 to shrink to a state of being in contact with the base 221, so as to achieve the switching of the suction cup 220 from the first state to the second state.

[0028] Based on the above technical solutions, please refer to Figure 6 and Figure 7 In a specific application of the film appearance inspection device of the embodiment of the present application, in the initial state when the diaphragm 400 just contacts the suction cup 220, the suction cup 220 is in the first state, and the suction surface of the suction cup 220 is a plane, which can ensure the uniformity and stability of the contact with the diaphragm 400. Under the action of negative pressure suction, the disc 222 will first absorb and grab the diaphragm 400, and as the negative pressure suction continues, based on the blocking effect of the diaphragm 400 on the negative pressure hole 2221, the first cavity 223 can be in a negative pressure state and then the cavity shrinks. During the process of the first cavity 223 shrinking, the disc 222 gradually adheres to the attachment surface 2212a of the base 221 to make the adsorption The surface adaptively changes into a convex arc surface, thereby causing the diaphragm 400 adsorbed and contacted by the disc body 222 to bend and deform. If the suction cup 220 adsorbs and grasps two or more diaphragms 400, based on this arc-shaped bending change, slits are more likely to be formed at the edges of two adjacent diaphragms 400, so that the airflow blown out by the first blowing structure 120 can more easily enter between the two adjacent diaphragms 400 through the slit, thereby eliminating the vacuum area and electrostatic adhesion between the two adjacent diaphragms, and the two adjacent diaphragms 400 are automatically separated due to the disappearance of the adhesion force, so that the suction cup 220 only grasps one diaphragm 400, thereby ensuring the accuracy of the appearance inspection of the diaphragm 400 at the detection device 300.

[0029] As can be seen from the foregoing, based on the continuous negative pressure suction effect of the negative pressure source, the disc body 222 bends and changes into an arc shape. In the embodiment of the present application, the disc body 222 is provided with a plurality of deformation grooves 2222 on the side facing the base 221, and the plurality of deformation grooves 2222 are distributed along a first direction. Exemplarily, the first direction can be the length direction of the mounting plate 210. When the disc body 222 is bent and deformed, the size of the disc body 222 in the first direction is reduced. Based on the setting of the plurality of deformation grooves 2222, on the one hand, the disc body 222 can be more easily bent into an arc shape, thereby maintaining a good and tight fit with the attachment surface 2212a. On the other hand, in the process of the disc body 222 shrinking and deforming relative to the base 221, the deformation groove 2222 acts as a stress release point, which helps to disperse and relieve the stress caused by bending, reduces the risk of material fatigue and damage due to stress concentration, and extends the service life of the disc body 222.

[0030] During the research process, the inventor discovered that since the attachment surface 2212a on the base 221 is a convex arc surface, when the first cavity 223 is vacuumed by negative pressure, part of the disc 222 will produce a certain blocking effect after contacting the attachment surface 2212a, preventing the negative pressure source from completely vacuuming the first cavity 223, so that there are still some gap areas in the first cavity 223 that have not been vacuumed. In this case, the disc 222 cannot be completely and tightly attached to the base 221, and the bending separation effect produced by the bending of the diaphragm 400 driven by the disc 222 is relatively limited.

[0031] In this case, please continue to see Figure 6 and Figure 7 In a further technical solution, the base 221 is further provided with a guide groove 2212b on the attachment surface 2212a, and the guide groove 2212b extends from the attachment surface 2212a to the lower part of the attachment surface 2212a, that is, extends in the length direction of the mounting plate 210. With such a configuration, when the first cavity 223 is evacuated, based on the air guiding effect of the guide groove 2212b, the air in each part of the first cavity 223 can be evacuated, so that the disk body 222 in the second state can be tightly and stably attached to the attachment surface 2212a.

[0032] In the aforementioned embodiment, after the top layer of the membrane sheet 400 is bent, the edge of the top layer of the membrane sheet 400 is usually higher than the middle position of the membrane sheet 400, and the blowing direction of the first blowing structure 120 is toward the upper part of the membrane stack. In this case, the airflow entering through the seam between the top layer of the membrane sheet 400 and the second top layer of the membrane sheet 400 is small, and the peeling effect is limited.

[0033] Based on this situation, in some embodiments of the present application, the loading device 100 also includes a second blowing structure 130. Similarly, the second blowing structure 130 can be a longitudinally extending columnar or strip-shaped pipe arranged on the material tray 110. The second blowing structure 130 is provided with a second air hole 131. The blowing direction of the second blowing structure 130 is higher than the blowing direction of the first blowing structure 120. In a preferred embodiment, the blowing direction of the second blowing structure 130 corresponds to the edge of the bent membrane 400. In this way, when the second blowing structure 130 performs a blowing action, more air can pass through the slit and enter between two adjacent membranes 400, thereby accelerating the separation effect of the two adjacent membranes 400, and avoiding the situation where part of the membrane 400 falls outside the material tray 110 due to separation delay when the transfer device 200 leaves the loading device 100.

[0034] For further technical solutions, see Figure 6 , Figure 7 and Figure 8 The second air holes 131 are in the shape of long strips extending longitudinally. When the suction cup 220 is in the second state, the length of the second air holes 131 distributed above the diaphragm 400 is greater than the length of the second air holes 131 distributed below the diaphragm 400. The second air holes 131 are configured to intermittently blow air to the diaphragm 400. Under such a setting, during the blowing process of the second air holes 131, the first air flow force above the diaphragm 400 is greater than the second air flow force below the diaphragm 400. The first air flow force can exert a certain downward pressure on the upwardly warped part of the edge of the diaphragm 400, and the edge of the diaphragm 400 has a tendency to warp upward under the action of the suction cup 220. In this way, during the intermittent blowing process of the second air holes 131, the edge of the diaphragm 400 can oscillate up and down, thereby facilitating the accelerated separation of the two adhered diaphragms 400 at the edge.

[0035] In the optional embodiments of this application, please continue to refer to Figure 2 and Figure 3The feeding device 100 may further include a friction structure 150. The friction structure 150 may be provided on the first blowing structure 120. In the longitudinal direction, at least a portion of the friction structure 150 overlaps with the first air hole 121, and the lower portion of the first air hole 121 exceeds the friction structure 150. Exemplarily, the friction structure may be a protruding structure provided on the first blowing structure 120 and distributed on both sides of the first air hole 121. In this way, when two adhered diaphragms 400 pass through the friction structure, , the friction structure will first contact the upper diaphragm 400, and then contact the lower diaphragm 400. In this process, due to the order of contact, the latter diaphragm 400 will naturally produce a gap with the previous diaphragm 400 when it is released from the friction structure 150. At the same time, based on the overlapping relationship between the first air hole 121 and the friction structure 150 in the longitudinal direction, air flow will be blown into between the two diaphragms 400 at the same time as the gap is generated, thereby ensuring the formation of the gap and accelerating the separation of the diaphragms 400. In some embodiments, the friction structure can be made of a material with a higher friction coefficient. Exemplarily, the friction structure can be a rubber sheet that is fitted or inlaid on both sides of the first air hole 121. Optionally, an inclined guide surface is provided on the lower end side of the friction structure.

[0036] In some embodiments, the surface of the friction structure is provided with a plurality of horizontal strip-shaped protrusions. The gap between two adjacent strip-shaped protrusions is greater than the thickness of the single-layer diaphragm 400. In the process of the two laminated diaphragms 400 contacting and deforming with the friction structure, the lower diaphragm 400 will certainly scrape against the strip-shaped protrusions, while the upper diaphragm 400 will not scrape against the strip-shaped protrusions. This will make the friction force on the upper diaphragm 400 smaller than the friction force on the lower diaphragm, thereby making the elastic deformation of the upper diaphragm 400 and the lower diaphragm 400 differ greatly, which is beneficial to the separation of the two laminated diaphragms 400.

[0037] In some embodiments of this application, see Figure 8 and Fig. 9The base 221 includes a base body 2211 and a base body 2212 connected to the base body 2211 . The base body 2212 forms the aforementioned attachment surface 2212a on the side facing the disk body 222 . The guide groove 2212b is opened in the base body 2212 . In the second state, the aforementioned disk body 222 is attached to the base body 2212 . In the embodiment of the present application, the base 2212 is telescopically arranged relative to the seat 2211 and a second cavity 2213 is provided therebetween. The second cavity 2213 is connected to a negative pressure source. The second cavity 2213 is configured to shrink the base 2212 relative to the seat 2211 under suction. In this way, the two adhered membrane sheets 400 can be separated at their central positions, and this shrinking action is a pre-lifting of the grasped membrane sheet 400. Compared with the direct lifting and transportation method, the grasped top layer of the membrane sheet 400 can play a certain blocking and limiting role on the separated sub-top layer of the membrane sheet 400, thereby preventing the sub-top layer of the membrane sheet 400 from being dragged out and falling outside the material tray 110.

[0038] In an optional embodiment, the base 2212 can be slidably mounted on the seat 2211, and the upper portion of the base 2212 can be connected to the seat 2211 via a cylindrical elastic membrane 2214. When the negative pressure source sucks the second cavity 2213, the cylindrical elastic membrane 2214 shrinks to form wrinkles while the base 2212 slides upward relative to the seat 2211, so as to pre-lift the middle portion of the diaphragm 400. This method is easy to assemble and has good sealing properties.

[0039] In another optional embodiment, the base 2212 can be an elastic body, and the base 2212 includes a first part and a second part, wherein the first part is fixedly connected to the seat 2211. For example, the first part can be sleeved on the seat 2211 and connected and fixed by gluing, and the second part is connected to the first part. The aforementioned attachment surface 2212a and guide groove 2212b are both arranged on the second part. When the negative pressure source sucks the second cavity 2213, the second part contracts relative to the first part to achieve pre-lifting of the middle part of the diaphragm 400. For example, the pre-lifting of the middle part of the diaphragm 400 can be combined with the gas blowing of the first blowing structure 120, which is beneficial to separate the middle part of the diaphragm 400 adsorbed on the suction cup 220 from the diaphragm 400 below.

[0040] For further technical solutions, see Figure 8 and Fig. 9The transfer device 200 may further include a support member 230, which is disposed on the mounting plate 210. For example, the support member 230 may be a columnar structure, and the support member 230 corresponds to the edge of the diaphragm 400. When the base 2212 shrinks relative to the seat 2211, the support member 230 and the edge of the diaphragm 400 abut against each other to cause the diaphragm 400 to bend and deform. In other words, when the diaphragm 400 is not in contact with the support member 230, both sides of the diaphragm 400 are warped upward, and when the diaphragm 400 is in contact with the support member 230, the edge of the diaphragm 400 is bent downward again, which can increase the number and trend of bending deformation of the diaphragm 400 again, further ensuring the stable separation of the two adhered diaphragms 400.

[0041] For further technical solutions, see Figure 7 , Figure 8 and Fig. 9 The loading device 100 may further include a third blowing structure 140 , on which a third air hole 141 is provided, and a blowing direction of the third air hole 141 is toward between the first blowing structure 120 and the second blowing structure 130 to adapt to the edge position of the diaphragm 400 after being adjusted by the support member 230 .

[0042] In the embodiment of the present application, the suction cup 220 includes two adsorption units arranged opposite to each other, and the distance between the two adsorption units is adjustable. In this way, by adjusting the distance between the two adsorption units, the two adsorption units can adapt to the bending performance of the membrane 400 of different materials and different sizes, that is, the transfer device has good versatility when transferring the membrane 400. Exemplarily, the mounting plate 210 is provided with a slide groove 211 extending along the first direction, and the adsorption unit can be slidably arranged along the slide groove 211, and can be connected and fixed to the mounting plate 210 through the connecting member 510 after sliding to a suitable position.

[0043] In some embodiments, the disc 222 includes a deformable portion and a fixed portion. Exemplarily, the deformable portion is located at the end of the disc structure, and the adsorption surfaces at both ends of the disc 222 can be deformed into arc-shaped adsorption surfaces through the deformation of the deformable portion. Optionally, the fixed portion is located in the middle of the disc 222, and optionally, the fixed portion does not deform during the adsorption of the diaphragm 400. In an optional embodiment, the negative pressure hole 2221 is provided in the deformable portion and communicates with the first cavity 223. The fixed portion is provided with an adsorption hole, which is communicated with the second cavity 2213. In some optional embodiments, after the separation of the diaphragm 400 is completed, the deformation of the deformable portion can be restored by ventilating the first cavity 223, thereby allowing the diaphragm 400 to restore its deformation. Since the second cavity 2213 still maintains a negative pressure state, the diaphragm 400 can still be adsorbed and fixed on the disc 222 through the adsorption hole provided in the fixed portion. This embodiment can eliminate the stress of bending deformation of the diaphragm 400 during the process of removing the diaphragm 400 from the disk body 222, which is beneficial to the smooth removal of the diaphragm 400.

[0044] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0045] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A film appearance detection device, characterized in that: It comprises a loading device (100), a transfer device (200) and a detection device (300), wherein the transfer device (200) is used to transfer the membrane sheets (400) stacked on the loading device (100) to the detection device (300); wherein: The loading device (100) comprises a material tray (110) and a first blowing structure (120); the membrane sheets (400) are stacked on the material tray (110) to form a membrane stack; the first blowing structure (120) is provided with a first air hole (121); the first air hole (121) is configured to blow air toward the top of the membrane stack so that the membrane sheet (400) located on the top layer and the membrane sheet (400) located on the second top layer are separated from each other; The transfer device (200) comprises a mounting plate (210) and a suction cup (220) disposed on the mounting plate (210), wherein the suction cup (220) comprises a base (221) and a disc body (222) telescopically connected to the base (221), wherein a negative pressure hole (2221) is disposed on the disc body (222), and a first cavity (223) connected to the negative pressure hole (2221) is formed between the base (221) and the disc body (222), wherein the suction cup (220) has a first state and a second state, wherein in the first state, the suction surface of the disc body (222) is a plane, and in the second state, the disc body (222) is attached to the base (221) so that the suction surface changes into a curved surface, and the suction cup (220) is configured to switch from the first state to the second state under the action of negative pressure suction.

2. The film appearance inspection device according to claim 1, characterized in that: The disc body (222) is provided with a plurality of deformation grooves (2222) on a side facing the base (221).

3. The film appearance inspection device according to claim 1, characterized in that: The base (221) has an attachment surface (2212a) facing the disk body (222), the attachment surface (2212a) is a convex arc surface, and in the second state, the disk body (222) is attached to the attachment surface (2212a); The base (221) is further provided with a guide groove (2212b) on the attachment surface (2212a), and the guide groove (2212b) is extended from a high point of the attachment surface (2212a) to a low point of the attachment surface (2212a).

4. The film appearance inspection device according to claim 1, characterized in that: The loading device (100) further comprises a second blowing structure (130), wherein the blowing direction of the second blowing structure (130) is toward the adsorption surface of the suction cup (220), and the blowing direction of the second blowing structure (130) is higher than the blowing direction of the first blowing structure (120).

5. The film appearance inspection device according to claim 4, characterized in that: The second blowing structure (130) is provided with a second air hole (131), and the second air hole (131) is in the shape of a longitudinally extending long strip. When the suction cup (220) is in the second state, the length of the second air hole (131) distributed above the diaphragm (400) is greater than the length of the second air hole (131) distributed below the diaphragm (400).

6. The film appearance inspection device according to any one of claims 1 to 5, characterized in that: The feeding device (100) further comprises a friction structure (150), wherein the friction structure (150) is arranged on the first blowing structure (120), and along the longitudinal direction, at least a portion of the friction structure (150) overlaps with the first air hole (121), and a lower portion of the first air hole (121) exceeds the friction structure (150), and the friction structure (150) is used for frictionally contacting with the diaphragm (400).

7. The film appearance inspection device according to any one of claims 1 to 5, characterized in that: The base (221) comprises a seat body (2211) and a base body (2212) connected to the seat body (2211); in the second state, the disc body (222) is attached to the base body (2212); a second cavity (2213) is provided between the base body (2212) and the seat body (2211); and the second cavity (2213) is configured to cause the base body (2212) to shrink relative to the seat body (2211) in a suction state.

8. The film appearance inspection device according to claim 7, characterized in that: A support member (230) is also provided on the mounting plate (210), and the support member (230) corresponds to the edge of the diaphragm (400). When the base (2212) contracts relative to the seat (2211), the support member (230) abuts against the edge of the diaphragm (400), causing the diaphragm (400) to bend and deform.

9. The film appearance inspection device according to any one of claims 1 to 5, characterized in that: The suction cup (220) comprises two suction units that are arranged opposite to each other, and the distance between the two suction units is adjustable.

10. The film appearance inspection device according to claim 9, characterized in that: The mounting plate (210) is provided with a slide groove (211) extending along a first direction, and the adsorption unit can slide along the slide groove (211) and be connected and fixed to the mounting plate (210) via a connecting member (510).

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