A conveying device for processing a folding cover plate

Abstract

The present invention relates to the technical field of manufacturing folding cover plates for flexible display devices, and particularly relates to a conveying device for processing folding cover plates, which includes a conveying mechanism and a grasping mechanism. The grasping mechanism includes a suction cup seat capable of lifting, a first vacuum suction cup, and a second vacuum suction cup. The first vacuum suction cup is assembled on the suction cup seat through a spring and can be telescoped up and down. The second vacuum suction cup is fixed on the suction cup seat. A tooth-pushing mechanism and a blowing mechanism are arranged beside the second vacuum suction cup. The tooth-pushing mechanism includes a pushing block capable of lifting. The pushing block has an inclined material-pushing surface, and a plurality of teeth are arranged on the material-pushing surface from bottom to top. The teeth are used to push apart a plurality of CPI film materials adsorbed by the second vacuum suction cup, at least forming a separation gap between the ends of the top adjacent two CPI film materials. The blowing mechanism is arranged at a position corresponding to the separation gap at the top and is used to blow air into the separation gap. The present invention can avoid grasping multiple CPI film materials at one time, thereby avoiding misjudgment by the visual inspection device.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing folding cover plates for flexible display devices, and particularly relates to a conveying device for processing folding cover plates. Background Art

[0002] The folding cover plate for a flexible display screen is an important component of the flexible display screen, mainly used to protect the flexible display screen, improve the display effect, and provide mechanical support, and has the characteristics of being repeatedly bendable, transparent, ultra-thin, and having sufficient hardness.

[0003] Currently, there are mainly two types of folding cover plate materials, namely CPI (polyimide) film and UTG ultra-thin glass. The present invention mainly focuses on the preparation of CPI film. In the prior art, the CPI film is prepared by laminating a CPI film sheet (transparent polyimide film) and an OCA (optical adhesive) film sheet. The manufacturing process adopted is, for example, a manufacturing method of a folding cover plate for a flexible display screen disclosed in a Chinese patent application document with the application publication number CN118314806A. The manufacturing method mainly includes: S1, continuously printing the border of the folding cover plate on the CPI tape, and printing a detection mark at the same position outside each border; S2, synchronously unwinding the CPI tape and the OCA tape, and detecting the printed length of the border on the CPI tape through the detection mark; S3, adjusting the die-cutting length of the OCA tape according to the detected printed length of the border, cutting the OCA tape into OCA tape pieces and laminating them on the CPI tape so that the OCA tape pieces cover the border; S4, synchronously performing die-cutting treatment on the laminated OCA tape pieces and the CPI tape to form single-piece CPI film.

[0004] Since the die-cutting equipment discharges materials continuously, in order to reduce frequent picking and placing operations, the single-piece CPI film material is usually stacked at the die-cutting station, and then the stacked CPI film materials are integrally moved to the loading station, and the single-piece CPI film materials are adsorbed by the vacuum suction cups on the robot arm and moved to the conveyor belt on the side. Finally, the CPI film materials are sent to the visual inspection station by the conveyor belt to identify and sort the qualified products and unqualified products. The CPI film materials with scratches and cracks, foreign objects and contamination, bubbles and holes, abnormal colors, and excessive thickness on the surface will be judged as unqualified products after being detected by the visual inspection device. When the CPI film materials are stacked, an interlayer adsorption force is easily generated due to electrostatic action, and the surfaces of adjacent CPI film materials will attract each other electrostatically, resulting in the vacuum suction cup often adsorbing the lower CPI film material together when adsorbing the upper CPI film material. In this way, multiple CPI film materials stacked will appear when the robot arm sends the CPI film materials to the conveyor belt. The visual inspection device usually relies on image analysis to detect the size, surface defects, optical properties, etc. of the CPI film materials. When multiple CPI film materials are stacked, the overall light transmittance will change, which may cause the detection result of the visual inspection device to exceed the standard range. Even if a single piece is qualified, it may be misjudged after stacking; moreover, when multiple pieces are stacked, the thickness value will be abnormal and will be directly judged as unqualified. When the above misjudgment occurs, the qualified products will be sorted into the unqualified product area, resulting in material waste. Summary of the Invention

[0005] The purpose of the present invention is to provide a conveying device for processing folding covers to solve the technical problem of easy misjudgment when detecting whether the products are qualified during the production process of folding covers.

[0006] To solve the above problems, a conveying device for processing folding covers provided by the present invention adopts the following technical solutions:

[0007] A conveying device for processing folding covers includes a conveying mechanism and a grasping mechanism. The conveying mechanism is used for conveying CPI film materials; the grasping mechanism is arranged beside the conveying mechanism and is used for transporting the stacked CPI film materials to the conveying mechanism one by one. The grasping mechanism includes a suction cup seat that can be lifted, a first vacuum suction cup and a second vacuum suction cup located on both sides of the suction cup seat. The first vacuum suction cup is assembled on the suction cup seat through a spring and can be telescoped up and down, and the second vacuum suction cup is fixed on the suction cup seat; in the initial state, the bottom of the first vacuum suction cup is lower than the bottom of the second vacuum suction cup.

[0008] A tooth-pushing mechanism and a blowing mechanism are provided beside the second vacuum suction cup. The tooth-pushing mechanism includes a liftable pushing block which has an inclined material-pushing surface. A plurality of pushing teeth are arranged on the material-pushing surface from bottom to top. The pushing teeth are used to push apart the plurality of CPI film materials adsorbed by the second vacuum suction cup, at least forming a separation gap between the ends of the top two adjacent CPI film materials. The pushing teeth at the top are used to prevent the CPI film materials adjacent to the top CPI film material from passing through. The blowing mechanism is arranged at a position corresponding to the separation gap at the top and is used to blow air into the separation gap.

[0009] When the present invention is in use, the sucker seat is lowered so that the first vacuum suction cup and the second vacuum suction cup contact and adsorb the top CPI film material, and then the sucker seat is lifted. At this time, if multiple CPI film materials are synchronously sucked up, since the bottom of the first vacuum suction cup is lower than that of the second vacuum suction cup under the action of the spring elastic force in the initial state, when the sucker seat is lifted, the part of the CPI film material adsorbed by the second vacuum suction cup rises first, while the part adsorbed by the first vacuum suction cup remains in place. At this time, the ends of each CPI film material close to the second vacuum suction cup are respectively blocked by the corresponding pushing teeth and separated during the lifting process, and a separation gap can be generated between the ends of the top two adjacent CPI film materials. When the top CPI film material passes over the top pushing teeth, the blowing mechanism blows air into the separation gap below the top CPI film material. The airflow can break the electrostatic adsorption force between the two CPI film materials, separating the top CPI film material from the CPI film material below it, so that the grasping mechanism can only send the top CPI film material to the conveying mechanism, realizing the detection of the stacked CPI film materials one by one, avoiding misjudgment problems, and thus reducing material waste. In addition, when the blowing mechanism blows air into the separation gap, it can also blow out the non-adhesive impurities attached to the surface of the CPI film material, improving the qualification rate of the CPI film material to a certain extent.

[0010] Preferably, two first vacuum suction cups and two second vacuum suction cups are both arranged in a direction perpendicular to the conveying direction of the conveying mechanism. The sucker seat includes a seat body and two support arms rotatably assembled on the seat body through the same hinge shaft. A torsion spring connected to the two support arms is sleeved on the hinge shaft. The first vacuum suction cup is installed on the corresponding support arm. In the initial state, there is a set included angle between the two support arms.

[0011] Since a torsion spring is connected between the two support arms and there is an included angle initially under the action of the torsion spring, during the process of the sucker seat moving down to make the two first vacuum suction cups adsorb the CPI film material, the two support arms are pressed down and rotate to the horizontal state around the hinge shaft. During the process of the sucker seat rising, the reset of the torsion spring will drive the two support arms to rotate relatively closer, showing a tendency to pinch the top CPI film material, which helps to separate the top CPI film material from the CPI film material below it.

[0012] Preferably, the air blowing mechanism includes an air pipe fixed on the shifting block, and a gas passage communicating with the air pipe is provided on the shifting block.

[0013] Assembling the air blowing mechanism with the shifting block makes the overall structure more compact and the spatial layout reasonable. In addition, the air blowing mechanism guides the gas to the corresponding separation gap through the gas passage on the shifting block, and the gas will not move to other places, thus having no impact on the CPI film material at the top.

[0014] Preferably, the inclination angle of the material shifting surface is adjustable.

[0015] Adjusting the inclination angle of the material shifting surface is equivalent to adjusting the distance between each material shifting tooth and the CPI film material at the top, thereby adjusting the resistance of each material shifting tooth to the corresponding CPI film material during the lifting process of the CPI film material, and keeping the material shifting teeth in the optimal material shifting position.

[0016] Furthermore, it further includes a loading rack corresponding to the grasping mechanism one by one. The material shifting tooth mechanism further includes a sliding block, and the sliding block is assembled on the loading rack in a vertically adjustable manner, and the shifting block is rotatably assembled with the sliding block.

[0017] When the shifting block rotates relative to the sliding block, the inclination angle of the material shifting surface can be adjusted, and the sliding block can be adjusted vertically, which can adapt to the change in the height of the stacked CPI film materials and ensure that the shifting block performs the function of material shifting.

[0018] Preferably, a plurality of limiting columns are provided around the periphery of the CPI film material on the loading rack, and the plurality of limiting columns jointly enclose a loading area. A liftable support plate is provided in the loading area, and the support plate is used to support the stacked CPI film materials. The sliding block is slidably assembled on the corresponding limiting column.

[0019] Using a plurality of limiting columns to enclose the loading area saves more materials. There is no need to set a box structure with a closed perimeter, which can reduce the occupation of three-dimensional space.

[0020] Preferably, the sliding block is provided with a chute adapted to the limiting column, and a locking bolt is threadedly connected to the sliding block. The end of the locking bolt extends into the chute and is used to press against the limiting column located in the chute.

[0021] When adjusting the position of the sliding block, only need to loosen the locking bolt, then the sliding block can be slid up and down. After the sliding block slides in place, tighten the locking bolt to lock the position of the sliding block. The structure is simple and the operation is convenient.

[0022] Preferably, the length of the seat body in the conveying direction of the conveying mechanism is adjustable, and the length of the loading area in the conveying direction of the conveying mechanism is adjustable.

[0023] The loading area can place CPI film materials of different sizes. At the same time, the length of the seat body is adjustable, so that the distance between the first vacuum suction cup and the second vacuum suction cup can be adjusted to adapt to the change of the CPI film material size, improving the versatility of the entire conveying device.

[0024] Preferably, the seat body includes a fixed part and a movable part. The movable part is slidably matched with the fixed part in the conveying direction of the conveying mechanism. A first locking member for fixing the movable part is provided on the fixed part; an adjusting long hole extending in the conveying direction of the conveying mechanism is provided on the loading rack, and the limiting column is movably assembled in the adjusting long hole. A second locking member for fixing the limiting column is provided on the loading rack.

[0025] When adjusting the length of the seat body, only need to unlock the first locking member and pull out the movable part from the fixed part; when adjusting the position of the limiting column, only need to unlock the second locking member and slide the limiting column, and the operation method is simple.

[0026] Preferably, it further includes a frame. On both sides of the frame perpendicular to the conveying direction of the conveying mechanism, a row of grasping mechanisms are respectively movably assembled. A plurality of the grasping mechanisms in each row are arranged at intervals in the conveying direction of the conveying mechanism; among the two rows of grasping mechanisms, two corresponding grasping mechanisms act alternately.

[0027] By setting a plurality of grasping mechanisms, multiple CPI film materials can be grasped at one time, improving the detection efficiency of the CPI film materials.

[0028] The beneficial effects of the present invention are: the conveying device for processing the folding cover plate of the present invention can realize the automatic grasping of the CPI film material, and the grasping mechanism can grasp only one CPI film material at a time, avoiding the problem of misdetection of the visual detection device when multiple CPI film materials are sent to the conveying mechanism at the same time. Description of the Drawings

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the conveying device for processing the folding cover plate of the present invention;

[0030] Figure 2 It is a front view of the conveying device for processing the folding cover plate of the present invention;

[0031] Figure 3 It is a side view of the conveying device for processing the folding cover plate of the present invention;

[0032] Figure 4 It is a top view of the conveying device for processing the folding cover plate of the present invention;

[0033] Figure 5 It is an arrangement schematic diagram of two rows of grasping mechanisms in the conveying device for processing the folding cover plate of the present invention;

[0034] Figure 6The front view of a single grasping mechanism in the conveying device for processing the folding cover plate of the present invention;

[0035] Figure 7 The right side view of a single grasping mechanism in the conveying device for processing the folding cover plate of the present invention;

[0036] Figure 8 The three-dimensional structural schematic diagram of the tooth-pushing mechanism in the conveying device for processing the folding cover plate of the present invention;

[0037] Figure 9 The top view of the tooth-pushing mechanism in the conveying device for processing the folding cover plate of the present invention;

[0038] Figure 10 The side view of the tooth-pushing mechanism in the conveying device for processing the folding cover plate of the present invention;

[0039] Figure 11 The three-dimensional structural schematic diagram of the loading rack in the conveying device for processing the folding cover plate of the present invention.

[0040] Explanation of reference numerals:

[0041] 1, frame; 2, loading rack; 21, loading cylinder; 22, support plate; 23, side limit post; 24, support column; 25, bottom plate; 26, top plate; 261, adjustment long hole; 27, left end limit post; 28, right end limit post; 3, grasping mechanism; 31, first lifting cylinder; 32, suction cup seat; 321, seat body; 3211, fixed part; 3212, movable part; 3213, first locking part; 322, first support arm; 323, second support arm; 324, third support arm; 33, first vacuum suction cup; 34, second vacuum suction cup; 35, hinge shaft; 36, connecting plate; 37, second lifting cylinder; 38, spring; 4, air blowing mechanism; 5, tooth-pushing mechanism; 51, pushing block; 511, top tooth; 512, gas passage; 513, middle tooth; 514, bottom tooth; 52, slider; 521, chute; 522, locking bolt; 6, conveying mechanism; 61, conveying rack; 62, conveyor belt; 7, CPI film material; 8, transfer frame body; 81, sliding beam; 82, fixing plate; 83, sliding protrusion. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments.

[0043] Embodiment 1 of a conveying device for processing a folding cover plate provided by the present invention:

[0044] As Figure 1 AndFigure 10 As shown in the figure, a conveying device for processing a folding cover plate includes a frame 1, a conveying mechanism 6, a loading rack 2, a grasping mechanism 3, a tooth-pushing mechanism 5, and a blowing mechanism 4.

[0045] Among them, as Figure 4 shown, the conveying mechanism 6 is a common belt conveying mechanism 6 in the prior art, including a conveying frame 61 and a conveyor belt 62 installed on the conveying frame 61. The conveying frame 61 is placed on the ground, and the conveyor belt 62 is used to carry the CPI film material 7 grabbed by the grasping mechanism 3 and convey the above-mentioned CPI film material 7 piece by piece towards the visual inspection device, and the visual inspection device is used to detect whether the CPI film material 7 is qualified.

[0046] In this embodiment, for the convenience of description, the conveying direction of the conveyor belt 62 is defined as the left-right direction, and the horizontal direction perpendicular to the conveying direction of the conveyor belt 62 is defined as the front-back direction.

[0047] As Figure 3 and Figure 4 shown, the conveying frame 61 is located inside the frame 1. Both the conveying frame 61 and the frame 1 are symmetric structures, and the symmetric plane of the conveying frame 61 is coplanar with the symmetric plane of the frame 1. As Figure 1 and Figure 4 shown, a row of grasping mechanisms 3 are symmetrically arranged on the front and rear sides of the conveying frame 61 respectively. As Figure 5 shown, multiple grasping mechanisms 3 in each row are arranged at intervals in the left-right direction. The grasping mechanism 3 is used to transport the CPI film materials 7 stacked together on the loading rack 2 piece by piece onto the above-mentioned conveyor belt 62. In this embodiment, a total of four grasping mechanisms 3 are arranged in each row, and the spacing between any two adjacent grasping mechanisms 3 in the left-right direction is equal. In actual application, the appropriate number of grasping mechanisms 3 can be reasonably selected according to the space of the workshop.

[0048] In this embodiment, as Figure 2 and Figure 5As shown, the four grasping mechanisms 3 in each row are all fixed on the same transfer frame 8. The transfer frame 8 includes a sliding beam 81 extending in the left-right direction and a fixing plate 82 welded to the sliding beam 81. The height of the bottom end of the fixing plate 82 is lower than the height of the bottom end of the sliding beam 81. On the left and right sides of the top of the sliding beam 81, there is respectively provided a sliding protrusion 83. On the frame 1, there are provided two track grooves corresponding to the sliding protrusions 83, and the track grooves extend in the front-back direction. The sliding protrusions 83 on the same side of the two sliding beams 81 are in sliding fit with the corresponding track grooves. During actual operation, at the position of the frame 1 corresponding to each sliding beam 81, there are provided a plurality of pushing cylinders (not shown in the figure) arranged at intervals in the left-right direction. The piston rods of the plurality of pushing cylinders are connected to the sliding beam 81 to push the sliding beam 81 to approach or move away from the conveyor belt 62 in the front-back direction, and each grasping mechanism 3 follows the sliding beam 81 to move in the front-back direction together to transport the CPI film material 7 above the conveyor belt 62. Of course, in other embodiments, each grasping mechanism 3 can also be individually configured with a transfer frame 8. At this time, it is necessary to provide the same number of sliding grooves 521 on the frame 1 as the number of transfer frames 8 on the same side.

[0049] Specifically, in this embodiment, as Figure 6 and Figure 7 shown, each grasping mechanism 3 includes a first lifting cylinder 31, a second lifting cylinder 37, a suction cup seat 32, a first vacuum suction cup 33, and a second vacuum suction cup 34. Among them, the first lifting cylinders 31 of the respective grasping mechanisms 3 located on the same side of the conveyor belt 62 are all fixed on the sliding beam 81 on that side. The piston rods of the respective first lifting cylinders 31 located on the same side of the conveyor belt 62 are commonly connected to a connecting plate 36. On the side of the connecting plate 36 facing away from the respective first lifting cylinders 31, there are respectively fixed second lifting cylinders 37 corresponding to the respective first lifting cylinders 31. On the cylinder body of each second lifting cylinder 37, there are four guide shafts arranged in an array.

[0050] As Figure 6 and Figure 7As shown, the suction cup seat 32 includes a seat body 321, a first support arm 322, a second support arm 323, and a third support arm 324. Among them, the seat body 321 is a horizontally telescopic structure that can adjust the length in the left - right direction, including a fixed part 3211 and a movable part 3212. Four guide shafts are connected to the fixed part 3211, and at the same time, the piston rod of the second lifting cylinder 37 is connected to the fixed part 3211. The movable part 3212 is in sliding fit with the fixed part 3211 in the left - right direction, and a first locking member 3213 for fixing the movable part 3212 is provided on the fixed part 3211. The first locking member 3213 is a bolt, which is thread - connected to the fixed part 3211. When the first locking member 3213 is loosened, the movable part 3212 can be pulled. When the movable part 3212 moves to the appropriate position, tightening the first locking member 3213 can stably lock the movable part 3212.

[0051] As Figure 5 shown, both the first support arm 322 and the second support arm 323 are located on the same side of the seat body 321, and the third support arm 324 is located on the other side of the seat body 321. The first support arm 322 and the second support arm 323 have the same length, and the two are relatively rotatably assembled on the movable part 3212 through the same hinge shaft 35. A torsion spring is sleeved on the hinge shaft 35, and the two ends of the torsion spring are respectively connected to the first support arm 322 and the second support arm 323. The interiors of the first support arm 322 and the second support arm 323 are hollow, and a first vacuum suction cup 33 is respectively installed on the first support arm 322 and the second support arm 323; the interior of the third support arm 324 is also hollow, and a second vacuum suction cup 34 is respectively fixed at the positions corresponding to the two first vacuum suction cups 33 on the third support arm 324. When the above - mentioned movable part 3212 is pulled, the distance between the first vacuum suction cups 33 and the second vacuum suction cups 34 in the left - right direction can be adjusted, and thus the adsorption positions of the first vacuum suction cups 33 and the second vacuum suction cups 34 can be adjusted.

[0052] As Figure 6 shown, a spring 38 is sleeved outside each first vacuum suction cup 33, and the two springs 38 are respectively connected to the first support arm 322 and the second support arm 323. The two first vacuum suction cups 33 are in sliding and sealing fit with the first support arm 322 and the second support arm 323 respectively. When the CPI film 7 is not grasped initially, the spring 38 is in a natural state. At this time, the height of the bottoms of the two first vacuum suction cups 33 is less than the height of the bottoms of the two second vacuum suction cups 34, that is, in the initial state, there is a certain height difference between the bottoms of the two first vacuum suction cups 33 and the bottoms of the two second vacuum suction cups 34. At the same time, the torsion spring is in a natural state, and there is a certain included angle between the first support arm 322 and the second support arm 323. This included angle is small, so that when the first vacuum suction cups 33 adsorb the CPI film 7 and lift it, the CPI film 7 will not undergo plastic deformation.

[0053] As shown Figure 1 in the figure, the loading rack 2 is correspondingly arranged below the grasping mechanism 3 and is connected to the conveying rack 61. In this embodiment, as shown Figure 2 and Figure 11 in the figure, the loading rack 2 includes a bottom plate 25, a top plate 26, support columns 24 and a loading cylinder 21. Among them, both the bottom plate 25 and the top plate 26 are rectangular plates with the same size, and the bottom plate 25 and the top plate 26 are arranged parallel to each other at intervals in the up and down direction. The support columns 24 are distributed in a rectangular array with four columns. Each support column 24 penetrates through the bottom plate 25 and is connected to the bottom plate 25 and the top plate 26. Anti-slip rubber pads are also installed at the bottom of each support column 24. The loading cylinder 21 is fixed on the bottom plate 25, and the output end of the loading cylinder 21 is connected to a support plate 22, and the support plate 22 is used to place the stacked CPI film materials 7. A rectangular through hole for the support plate 22 and the CPI film materials 7 to pass through is provided on the top plate 26. A plurality of limit columns are provided around the rectangular through hole, which are respectively side limit columns 23 located on the front and rear sides of the rectangular through hole, a left end limit column 27 and a right end limit column 28 located on the left and right sides of the rectangular through hole. All the limit columns together enclose a placement area. During operation, the CPI film materials 7 located on the support plate 22 are located within the placement area, and each limit column has a limiting effect on the four sides of the CPI film materials 7.

[0054] At the position corresponding to the left end limit column 27 on the top plate 26, an adjustment long hole 261 is provided. The adjustment long hole 261 extends in the left and right direction, and the left end limit column 27 is slidably assembled in the adjustment long hole 261. A second locking member (not shown in the figure) for fixing the left end limit column 27 is provided on the side of the top plate 26. The second locking member also uses a bolt, and the end of the bolt has a small section of smooth rod section. The bolt is threadedly connected to the top plate 26. A small bearing is embedded in the left end limit column 27, and the end of the bolt extends into the adjustment long hole 261 and is assembled with the above-mentioned small bearing. By screwing the bolt, the position of the left end limit column 27 in the left and right direction can be adjusted. By loosening the bolt, the left end limit column 27 can be kept in the current position under the self-locking action of the thread. After the position of the left end limit column 27 is changed, it is equivalent to adjusting the length of the above-mentioned placement area in the left and right direction, and then CPI film materials 7 of different sizes can be placed. Correspondingly, adjusting the distance between the first vacuum chuck 33 and the second vacuum chuck 34 can also adsorb CPI film materials 7 of different sizes, thereby improving the versatility of the entire conveying device for folding cover plate processing.

[0055] As shown Figure 3 in the figure, the tooth-pulling mechanism 5 and the air-blowing mechanism 4 are both arranged beside the second vacuum chuck 34 and are located at the position of the right end limit column 28. As shown Figure 8 、 Figure 9 and Figure 10As shown, the tooth-pushing mechanism 5 includes a slider 52 and a push block 51. A chute 521 adapted to the right-end limit post 28 is provided on the slider 52. The slider 52 is sleeved on the right-end limit post 28 through the chute 521 and can thus slide up and down on the right-end limit post 28. A lock bolt 522 is threadedly connected to the side of the slider 52 facing away from the right-end limit post 28. The end of the lock bolt 522 extends into the chute 521 and is used to press against the right-end limit post 28 located in the chute 521, thereby fixing the slider 52 in the current position.

[0056] As Figure 9 shown, the push block 51 is hinged to the middle of the slider 52, can rotate relative to the slider 52, and simultaneously move up and down following the slider 52. The push block 51 has a material-pushing surface facing the CPI film material 7. The material-pushing surface is inclined, and a plurality of teeth are provided on the material-pushing surface from bottom to top. The plurality of teeth are divided into top teeth 511, bottom teeth 514, and middle teeth 513. The protruding lengths of the top teeth 511 and the bottom teeth 514 are greater than the protruding lengths of the middle teeth 513. The function of each tooth is to separate the ends of the adsorbed multiple CPI film materials 7 when the second vacuum chuck 34 sucks up the CPI film materials 7, so as to form a separation gap between the ends of adjacent two CPI film materials 7. The top teeth 511 can allow the top CPI film material 7 in direct contact with the second vacuum chuck 34 to pass through and block the subsequent CPI film materials 7 from passing through.

[0057] The air-blowing mechanism 4 includes an air pipe fixed on the push block 51 and a small blower (not shown in the figure) connected to the air pipe. As Figure 8 shown, a gas channel 512 is opened at the position between the top teeth 511 and the adjacent middle teeth 513 on the push block 51. The gas channel 512 is communicated with the air pipe and corresponds to the position of the separation gap at the top (the separation gap formed between the top CPI film material 7 and the adjacent CPI film material 7). When the small blower is started, the air flow is sent into the gas channel 512 through the air pipe and blown into the separation gap at the top.

[0058] The working process of the conveying device for processing the folding cover plate of the present invention:

[0059] Initially, the CPI film materials 7 stacked together are placed in the loading area of each loading rack 2. At this time, there is a small included angle between the first support arm 322 and the second support arm 323, and there is a height difference between the bottom of the first vacuum chuck 33 and the bottom of the second vacuum chuck 34.

[0060] During operation, the transfer frame 8 moves each grasping mechanism 3 above the corresponding loading rack 2. After the first lifting cylinder 31 extends in place, the second lifting cylinder 37 extends. The extension speed of the second lifting cylinder 37 should be less than that of the first lifting cylinder 31. During the extension of the second lifting cylinder 37, the first vacuum suction cup 33 first contacts the CPI film material 7 at the top, then compresses the spring 38. At the same time, the first support arm 322 and the second support arm 323 rotate relative to each other to the horizontal state, and just then the second vacuum suction cup 34 also contacts the CPI film material 7 at the top. After that, the second lifting cylinder 37 retracts. During the retraction of the second lifting cylinder 37, the second vacuum suction cup 34 first lifts. At this time, the first vacuum suction cup 33 remains in place. This causes the side of the CPI film material 7 adsorbed by the second vacuum suction cup 34 to be lifted first. When the elastic force of the spring 38 is completely released, the side of the CPI film material 7 adsorbed by the first vacuum suction cup 33 is also lifted. At this time, the torsion spring will also reset, and an included angle is formed again between the first support arm 322 and the second support arm 323. This included angle is very small, making the two first vacuum suction cups 33 show a tendency to pinch the CPI film material 7. However, this phenomenon is not sufficient to cause plastic deformation of the CPI film material 7 adsorbed by the first vacuum suction cup 33 and will not affect the quality of the CPI film material 7.

[0061] If the second vacuum suction cup 34 adsorbs multiple CPI film materials 7 at one time, one end of each CPI film material 7 adsorbed by the second vacuum suction cup 34 is mutually separated by the action of each tooth during the lifting process, and a separation gap appears between them. When the CPI film material 7 at the top passes over the top tooth 511, the blowing mechanism 4 blows air into the separation gap at the top. This airflow can break the electrostatic adsorption force between the two CPI film materials 7, separating the CPI film material 7 at the top from the CPI film material 7 below it. When the above two first vacuum suction cups 33 show a pinching tendency, it also helps to separate the CPI film material 7 at the top from the CPI film material 7 below it. Thus, the grasping mechanism 3 can grasp only one CPI film material 7 each time. When the blowing mechanism 4 blows air into the separation gap, it can also blow out the non-adhesive impurities (such as environmental dust) attached to the surface of the CPI film material 7. When the blowing mechanism 4 blows air into the separation gap, it can blow off the non-adhesive impurities on the mutually contacting surfaces of two adjacent CPI film materials 7, so that during the process of the CPI film materials 7 being grasped one by one, the upper and lower surfaces of each CPI film material 7 can be blown by the airflow generated by the blowing mechanism 4, to a certain extent improving the qualified rate of the CPI film materials 7. In actual operation, the two rows of grasping mechanisms 3 operate alternately under the control of the PLC, and each grasping mechanism 3 in each row operates synchronously under the control of the PLC. In this way, multiple CPI film materials 7 can be transferred onto the conveyor belt 62 at one time, ensuring the subsequent detection and sorting efficiency.

[0062] Example 2 of a conveying device for processing a folding cover plate provided by the present invention:

[0063] The main difference from Example 1 lies in:

[0064] In Example 1, the length of the suction cup seat is adjustable in the left - right direction, and at the same time, the position of the left - end limit post is adjustable in the left - right direction.

[0065] In this embodiment, the size of the suction cup seat is fixed, and the left - end limit post is welded to the top plate. At this time, the entire grasping mechanism only grabs and transports the CPI film materials of a specific size piece by piece.

[0066] Example 3 of a conveying device for processing a folding cover plate provided by the present invention:

[0067] The main difference from Example 1 lies in:

[0068] In Example 1, the inclination angle of the material - pushing surface on the pushing block is adjustable to adjust the resistance to the CPI film material.

[0069] In this embodiment, according to the thickness of the stacked CPI film materials, the pushing block is matched, that is, the inclination angle of the material - pushing surface on the pushing block is fixed, and at this time, the pushing block is fixedly connected to the slider.

[0070] In the description of this specification, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0071] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A conveying device for processing folding cover sheets, comprising a conveying mechanism and a grabbing mechanism, wherein the conveying mechanism is used to convey CPI film materials; the grabbing mechanism is arranged beside the conveying mechanism, and is used to transport the stacked CPI film materials one by one to the conveying mechanism, characterized in that: The gripping mechanism comprises a suction cup seat capable of being raised and lowered, a first vacuum suction cup and a second vacuum suction cup located on both sides of the suction cup seat, the first vacuum suction cup being assembled on the suction cup seat in a manner that it can be telescopically moved up and down by a spring, and the second vacuum suction cup being fixed on the suction cup seat; in an initial state, the bottom of the first vacuum suction cup is lower than the bottom of the second vacuum suction cup; A tooth-shifting mechanism and an air-blowing mechanism are provided on the side of the second vacuum suction cup. The tooth-shifting mechanism includes a lifting block, the block having an inclined material-shifting surface, and a plurality of teeth are provided on the material-shifting surface from bottom to top. The teeth are used to shift the plurality of CPI films adsorbed by the second vacuum suction cup away from each other, so as to form a separation gap between at least the ends of two adjacent CPI films at the top, and the teeth at the top are used to prevent the CPI film adjacent to the CPI film at the top from passing through; the air-blowing mechanism is provided at a position corresponding to the separation gap at the top and is used to blow air into the separation gap; Two first vacuum suction cups and second vacuum suction cups are arranged perpendicular to the conveying direction of the conveying mechanism. The suction cup seat includes a seat body and two support arms rotatably assembled on the seat body through the same hinge shaft. A torsion spring connected to the two support arms is sleeved on the hinge shaft, and the first vacuum suction cup is installed on the corresponding support arm. In the initial state, there is a set angle between the two support arms.

2. A conveying device for processing folding cover sheets according to claim 1, characterized in that: The blowing mechanism comprises an air pipe fixed on the shifting block, and the shifting block is provided with an air passage communicating with the air pipe.

3. A conveying device for processing folding cover sheets according to claim 1 or 2, characterized in that: The inclination angle of the material-discharging surface is adjustable.

4. A conveying device for processing folding cover sheets according to claim 3, characterized in that: It also includes a loading rack corresponding to the grabbing mechanism one by one, and the gear shifting mechanism also includes a slider, which is mounted on the loading rack in an adjustable position along the up and down directions, and the shifting block is rotatably assembled with the slider.

5. A conveying device for processing folding cover sheets according to claim 4, characterized in that: The loading rack is provided with a plurality of limit columns around the CPI film material, and the plurality of limit columns together form a loading area. A lifting support plate is provided in the loading area, and the support plate is used to support the CPI film materials stacked together. The slider is slidably assembled on the corresponding limit columns.

6. A conveying device for processing folding cover sheets according to claim 5, characterized in that: The slide block is provided with a slide groove matched with the limiting column, and a locking bolt is threadedly connected to the slide block, and the end of the locking bolt extends into the slide groove to tighten the limiting column located in the slide groove.

7. A conveying device for processing folding cover sheets according to claim 5 or 6, characterized in that: The length of the seat body in the conveying direction of the conveying mechanism is adjustable, and the length of the loading area in the conveying direction of the conveying mechanism is adjustable.

8. A conveying device for processing folding cover sheets according to claim 7, characterized in that: The seat body includes a fixed part and a movable part, the movable part and the fixed part are slidably matched in the conveying direction of the conveying mechanism, and the fixed part is provided with a first locking piece for fixing the movable part; the loading rack is provided with an adjustment long hole extending along the conveying direction of the conveying mechanism, the limiting column is movably assembled in the adjustment long hole, and the loading rack is provided with a second locking piece for fixing the limiting column.

9. A conveying device for processing folding cover sheets according to any one of claims 1 to 2, characterized in that: It also includes a frame, on which a row of grabbing mechanisms are movably mounted on both sides perpendicular to the conveying direction of the conveying mechanism, and a plurality of grabbing mechanisms in each row are arranged at intervals along the conveying direction of the conveying mechanism; in the two rows of grabbing mechanisms, two corresponding grabbing mechanisms act alternately.

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