Pasting device capable of preventing excessive pasting

Abstract

The utility model relates to the technical field of liquid crystal display screen pasting devices, and particularly discloses a pasting device capable of preventing excessive pasting. The rack is provided with a transportation mechanism, and a cleaning mechanism, a chip mounting mechanism and a detection mechanism which are sequentially arranged along the transportation direction of the transportation mechanism; the cleaning mechanism comprises a first lifting sliding table arranged on the rack and a scraper arranged on the first lifting sliding table and used for cleaning glass sheets. The pasting mechanism comprises a feeding box arranged on the rack and used for storing the polaroid, a second lifting sliding table arranged on the rack and a pasting roller arranged on the second lifting sliding table and used for pasting the polaroid to the glass sheet. The detection mechanism comprises a third lifting sliding table arranged on the rack and a laser displacement detector arranged on the third lifting sliding table and used for detecting the thickness of the product. According to the scheme, the polaroid pasting device can effectively prevent more polaroids from being pasted, manual inspection items and inspection difficulty are reduced, and the product reject ratio caused by dust and dirt is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of liquid crystal display screen patch device, specifically discloses a kind of patch device of preventing multiple patching. BACKGROUND

[0002] In the modern display technology field, the attachment of polarizing sheet is one of the key steps in manufacturing liquid crystal display (LCD). The patch device refers to the automated equipment that accurately attaches the polarizing sheet to the glass substrate. The device usually includes a feeding box and a driving member for driving the feeding box to move. The feeding box stores a stack of polarizing sheets, and a spring is also installed at the rear end of the feeding box to push the polarizing sheets in the feeding box forward for attachment. With the back-and-forth movement of the driving member, the outermost polarizing sheet is adhered and taken out of the feeding box by the adhesive tape, realizing the automated attachment process. This automated attachment method greatly improves the production efficiency, reduces the labor cost, and helps maintain the consistency and quality of the products.

[0003] However, in actual production, it is often found that the patch device has the problem of multiple patching. Since the surface of the polarizing sheet is relatively smooth, when the spring compresses the polarizing sheets, they are easily attached too tightly. Moreover, there may be a small amount of glue on the edge of the polarizing sheet, which may cause the two polarizing sheets to stick together after compression. The combined effect of these two factors makes it easy for two polarizing sheets to be taken out at the same time during the attachment process, which not only affects the attachment quality, but also is not easy to be found during the subsequent inspection process, which may increase the product defect rate.

[0004] In addition, another problem in the patching process is the cleanliness of the glass surface. In the manual patching process, the operator will use a dust-free cloth to dip alcohol and wipe the glass surface to remove stains and impurities before patching. However, the existing automated patching device does not have this step, so the stains and impurities on the glass surface may directly affect the attachment of the polarizing sheet, leading to a decrease in the quality and yield of the product after patching, affecting the display effect and service life.

[0005] Therefore, the existing patching device faces the technical problems of polarizing sheet sticking and glass surface cleanliness during the automated attachment of the polarizing sheet, which limits the improvement of the attachment efficiency and product quality. SUMMARY

[0006] The utility model aims at overcoming the shortcomings of the prior art and providing a patch device that prevents multiple patching.

[0007] The utility model discloses a kind of patch device of preventing multiple patching, using the following technical solutions:

[0008] A kind of prevent multiple patching patching device for polaroid to be pasted on glass sheet product, including rack, transport mechanism and the cleaning mechanism, patching mechanism and detection mechanism are sequentially arranged along the transport mechanism transport direction on the rack;The cleaning mechanism includes the first lifting sliding table being arranged on the rack and scraper being arranged on the first lifting sliding table, and the scraper is used to clean glass sheet;The patching mechanism includes the feeding box being arranged on the rack for storing polaroid, the second lifting sliding table being arranged on the rack and patching roller being arranged on the second lifting sliding table, and the patching roller is used to paste polaroid to glass sheet;The detection mechanism includes the third lifting sliding table being arranged on the rack and laser displacement detector being arranged on the third lifting sliding table, and the laser displacement detector is used to detect product thickness.

[0009] Preferably, the transport mechanism includes mechanical hand assembly and three translation assemblies;The three translation assemblies are located below cleaning mechanism, patching mechanism and detection mechanism respectively, and each translation assembly includes carrier for placing product and translation device for driving carrier away from or close to mechanical hand assembly;Mechanical hand assembly is used to place or take away product on carrier.

[0010] Preferably, the translation device includes stepper motor, screw rod being assembled on the output end of stepper motor and slider being matched with screw rod, and carrier is fixed on the top of slider.

[0011] Preferably, the carrier is provided with containing groove for placing glass sheet.

[0012] Preferably, the mechanical hand assembly includes conveying sliding table, lifting device being arranged on conveying sliding table, mechanical hand being arranged on lifting device and vacuum suction head being arranged on mechanical hand.

[0013] Preferably, the mechanical hand assembly includes three groups, corresponding to the positions of cleaning mechanism, patching mechanism and detection mechanism respectively.

[0014] Preferably, the lifting device is lifting cylinder.

[0015] Preferably, the three translation assemblies are arranged in parallel and located on the same side of conveying sliding table, and the moving direction of translation assembly is perpendicular to the moving direction of conveying sliding table.

[0016] Compared with prior art, the utility model at least includes following beneficial effects:

[0017] 1、The utility model discloses through setting up patching mechanism and detection mechanism, can effectively detect whether the patching exists multiple patching condition, prevents to paste multiple layer sheet product to flow to customer end, also reduces artificial inspection project and inspection difficulty;

[0018] 2. The utility model discloses a cleaning mechanism, not only effectively reduce the product defective rate caused by dust dirt, and reduce the detection mechanism and be affected by the protruding dirt and cause the detection error, further improve the accuracy of the detection to many pastes warning. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of the patch device of preventing many pastes of the utility model;

[0020] Figure 2 It is the cleaning mechanism schematic diagram of the patch device of preventing many pastes of the utility model;

[0021] Figure 3 It is the patch mechanism schematic diagram of the patch device of preventing many pastes of the utility model;

[0022] Figure 4 It is the detection mechanism schematic diagram of the patch device of preventing many pastes of the utility model.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 21, transport mechanism;11, object table;12, translation device;13, conveying slide table;14, lifting device;15, manipulator;16, vacuum suction head;2, cleaning mechanism;21, first lifting slide table;22, scraper;3, patch mechanism;31, second lifting slide table;32, patch roller;4, detection mechanism;41, third lifting slide table;42, laser displacement detector;100, product. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further explained in detail below by combining with the drawings and specific embodiments.

[0026] In order to realize that the polaroid is pasted on the glass sheet product 100, the embodiment provides a kind of patch device of preventing many pastes, it includes rack, and rack is equipped with patch mechanism 3, and patch mechanism 3 includes the feeding box for storing a bunch of polaroid and the feeding drive member (not shown in drawing) for driving feeding box to and fro movement, and the side of feeding box is equipped with adhesive tape roller for conveying adhesive tape, with the cooperation of feeding drive member and adhesive tape roller, so that the outermost polaroid of feeding box is adhered and taken away by adhesive tape, to carry out patch processing, and the rear end of feeding box is equipped with spring, so that polaroid is continuously pushed to supplement to outermost, to carry out patch processing in assembly line.In view of the structure of this feeding box and the adhesive tape taking mode are prior art, thus not making drawing description.

[0027] Although the existing patch device can well complete the patch processing, however, due to the fact that the adhesive tape often sticks away more than one polarizing sheet, resulting in the occurrence of multiple patching on the glass sheet, causing the product processing to be failed, in order to solve the multiple patching of the polarizing sheet, a transport mechanism 1 is arranged on the rack, and a cleaning mechanism 2, a patching mechanism 3 and a detection mechanism 4 are sequentially arranged along the transport direction of the transport mechanism 1.

[0028] The cleaning mechanism 2 comprises a first lifting slide 21 arranged on the rack and a scraper 22 arranged on the first lifting slide 21, and the scraper 22 is used for cleaning the glass sheet product 100; the patching mechanism comprises a second lifting slide arranged on the rack and a patching roller arranged on the second lifting slide, and the patching roller is used for patching the polarizing sheet to the glass sheet product 100; the detection mechanism 4 comprises a third lifting slide 41 arranged on the rack and a laser displacement detector 42 arranged on the third lifting slide 41, and the laser displacement detector 42 can be an infrared distance measuring instrument, which is used for detecting the distance value from the product 100 surface to the detection point, that is, the thickness of the product 100.

[0029] Specifically, the transport mechanism 1 comprises three translation assemblies. The three translation assemblies are respectively located below the cleaning mechanism 2, the patching mechanism 3 and the detection mechanism 4, each translation assembly comprises a carrier table 11 for placing the product and a translation device 12 for driving the carrier table 11 away from or close to the mechanical hand assembly. In the embodiment, the translation device 12 comprises a stepping motor, a lead screw arranged on the output end of the stepping motor and a sliding block matched with the lead screw, the carrier table 11 is fixed on the top of the sliding block, the translation device 12 is provided with a slide rail for limiting the sliding rotation, and the translation position of the carrier table 11 is accurately controlled by starting the stepping motor to drive the lead screw to rotate. The carrier table 11 is preferably provided with a containing groove for placing the glass sheet, so as to improve the operation stability of the glass sheet.

[0030] The transport mechanism 1 further comprises a mechanical hand assembly, and the mechanical hand assembly is used for placing or taking away the product on the carrier table 11. In the embodiment, the mechanical hand assembly comprises a conveying slide 13, a lifting device 14 arranged on the conveying slide 13, a mechanical hand 15 arranged on the lifting device 14 and a vacuum suction head 16 arranged on the mechanical hand 15. The lifting device 14 can be a lifting cylinder. The lifting device 14 cooperates with the mechanical hand 15 and the vacuum suction head 16 to play a role of sucking or placing the product 100, and the conveying slide 13 plays a role of moving the sucked product 100 to the next station.

[0031] As a preferred scheme, the mechanical hand assembly of the transport mechanism 1 comprises three groups, which correspond to the positions of the cleaning mechanism 2, the patching mechanism 3 and the detection mechanism 4 respectively. By adopting the above design, the cleaning, patching and detection can be simultaneously carried out on the production line, and the production efficiency is greatly improved compared with a single mechanical hand assembly.

[0032] As a preferred embodiment, the three translation components of the transport mechanism 1 are arranged in parallel and located on the same side of the conveyor slide 13. The direction of movement of the translation components is perpendicular to the direction of movement of the conveyor slide 13. This design can reduce the space occupied on the site. Of course, in other embodiments, the three translation components can also be arranged on opposite sides.

[0033] The principle of the anti-over-application patch device in this solution is as follows:

[0034] (1)Reference Figure 1 , Figure 2 After the conveying slide 13 of the transport mechanism 1 picks up the material, it moves to the workstation of the cleaning mechanism 2. Then, the lifting device 14 and the vacuum suction head 16 cooperate to place the glass sheet product 100 on the platform 11 of the workstation. The platform 11 is driven by its matching translation device 12 to move to the bottom of the scraper 22. The scraper 22 is driven by the first lifting slide 21 to descend and contact the glass sheet product 100. The translation device 12 continues to move the scraper 22 to scrape the dust off the surface of the glass sheet, completing the glass sheet cleaning step. The translation device 12 transports the platform 11 back to the initial position, and the robot arm component picks up the glass sheet from the platform 11.

[0035] (2)Reference Figure 1 , Figure 3 After the conveyor slide 13 of the transport mechanism 1 picks up the material, it moves to the station of the bonding mechanism 3. Then, the lifting device 14 and the vacuum suction head 16 cooperate to place the glass sheet product 100 on the platform 11 of the station. The platform 11 is driven by its matching translation device 12 to move to the bonding roller 32. The bonding roller 32 is driven by the second lifting slide 31 to descend until the polarizer on the tape contacts the glass sheet product 100. The translation device 12 continues to move so that the polarizer is bonded to the glass sheet, completing the bonding step. The translation device 12 transports the platform 11 back to the initial position, and the robot arm assembly picks up the glass sheet product 100 with the polarizer from the platform 11.

[0036] (3)Reference Figure 1 , Figure 4, the conveying slide table 13 of the transport structure 1 moves to the work station of the detection mechanism 4 after taking the glass sheet product 100, then the lifting device 14 cooperates with the vacuum suction head 16 to place the glass sheet product 100 with the polarizing sheet on the object table 11 of the work station, the object table 11 is driven to move to below the laser displacement detector 42 by the translation device 12 matched with the object table 11, the laser displacement detector 42 is driven to descend to the preset position by the third lifting slide table 41, and whether the distance from the glass sheet product 100 with the polarizing sheet to the detection point exceeds the preset value is detected. The position of the upper surface of the polarizing sheet is detected by the laser displacement detector 42, when one more polarizing sheet is pasted, the position of the upper surface of the polarizing sheet is higher, at this time, the data detected by the laser displacement detection device will exceed the standard, the equipment alarms and stops, the abnormal product is taken out manually for rework processing. The laser displacement detector 42 is set to a certain range, the range considers the thickness fluctuation of the glass sheet and the polarizing sheet, and the normal thickness fluctuation is far less than the thickness of one polarizing sheet, so that the multiple layers of sheets can be effectively detected.

[0037] The scheme sets the cleaning mechanism 2, the sheet pasting mechanism 3 and the detection mechanism 4, which can effectively detect whether the sheet is pasted multiple times, effectively prevent the multiple-layer sheet product from flowing to the customer end, reduce the manual inspection items and inspection difficulty, effectively reduce the product failure rate caused by dust and dirt by the cleaning mechanism 2, and reduce the detection error of the detection mechanism 4 caused by the protruding dirt, and further improve the accuracy of the multiple-pasting alarm.

[0038] The technical scheme provided by the utility model is described in detail above, the principle and implementation mode of the utility model are described by applying specific examples in this paper, and the description of the above examples is only used to help understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will be changed, and according to the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A device for preventing multiple applications of polarizing film, used for attaching polarizing film to glass sheet products, characterized in that, The device comprises a rack, a conveying mechanism, a cleaning mechanism, a patching mechanism and a detecting mechanism arranged in sequence along the conveying direction of the conveying mechanism; the cleaning mechanism comprises a first lifting slide arranged on the rack and a scraper arranged on the first lifting slide, the scraper being used for cleaning the glass sheet; the patching mechanism comprises a feeding box arranged on the rack for storing polaroid, a second lifting slide arranged on the rack and a patching roller arranged on the second lifting slide, the patching roller being used for patching the polaroid onto the glass sheet; the detecting mechanism comprises a third lifting slide arranged on the rack and a laser displacement detector arranged on the third lifting slide, the laser displacement detector being used for detecting the thickness of the product.

2. The multi-lamination preventing patch device according to claim 1, wherein The conveying mechanism comprises a mechanical hand assembly and three translation assemblies; the three translation assemblies are respectively arranged below the cleaning mechanism, the patching mechanism and the detecting mechanism, each of the translation assemblies comprises a carrier for placing the product and a translation device for driving the carrier to move away from or close to the mechanical hand assembly; the mechanical hand assembly is used for placing or taking away the product on the carrier.

3. The multi-lamination preventing patch device of claim 2, wherein, The translation device comprises a stepping motor, a screw rod arranged on the output end of the stepping motor and a slider matched with the screw rod, and the carrier is fixed on the top of the slider.

4. The multi-lamination preventing patch device of claim 2, wherein, The carrier is provided with a containing groove for placing the glass sheet.

5. The multi-lamination preventing patch device of claim 2, wherein, The mechanical hand assembly comprises a conveying slide, a lifting device arranged on the conveying slide, a mechanical hand arranged on the lifting device and a vacuum suction head arranged on the mechanical hand.

6. The multi-lamination preventing patch device of claim 5, wherein, The mechanical hand assembly comprises three groups corresponding to the positions of the cleaning mechanism, the patching mechanism and the detecting mechanism.

7. The multi-lamination preventing patch device of claim 5, wherein, The lifting device is a lifting cylinder.

8. The multi-lamination preventing patch device of claim 5, wherein, The three translation assemblies are arranged in parallel and on the same side of the conveying slide, and the moving direction of the translation assemblies is perpendicular to the moving direction of the conveying slide.

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