Display glass back cleaning system

Abstract

The invention discloses a display glass back cleaning system which comprises an input roller way and an output roller way, a hanging roller way is arranged between the input roller way and the output roller way, and parts of the two ends of the hanging roller way are stacked to the position above the input roller way or the position above the output roller way. A cleaning mechanism is arranged under the hanging rail and comprises a lifting cylinder and a cleaning head, and the lifting cylinder drives the cleaning head to move vertically. The hanging roller way comprises a hanging bracket and a conveying crawler belt surrounding the hanging bracket, a plurality of adsorption devices are evenly arranged on the conveying crawler belt, the adsorption devices are all arranged outwards, and the conveying crawler belt is driven by a conveying motor. The carrier plate glass reaches the bottom of the hanging roller way through the input roller way, the carrier plate glass can be adsorbed through the adsorption device and is hung and conveyed until the bottom surface of the carrier plate glass is completely exposed, a corresponding device can be arranged below the hanging roller way for operation, and after cleaning is completed, the carrier plate glass is moved to the output roller way and is output through the output roller way after being released by the adsorption device.

Description

Technical Field

[0001] This application belongs to the field of carrier glass production, and particularly relates to a cleaning system for the back side of display glass. Background Art

[0002] Carrier glass is mainly used as the substrate of a display screen. After going through multiple processes such as melting, forming and cooling, cutting, and grinding, various inspections are finally carried out on the carrier glass to complete the production of the carrier glass.

[0003] After many processes of the carrier glass are completed, the carrier glass needs to be cleaned. Usually, after the front side is cleaned, the carrier glass is turned over and the back side is cleaned accordingly to ensure the same quality on both the front and back sides. In the prior art, it is necessary to transport the carrier glass to the turning mechanism for turning over. For large-sized carrier glass, it is difficult, and the turning time is often too long, which affects the production rhythm. Moreover, during the turning process, due to the large amplitude of the movement, a large defective rate of the carrier glass will be caused due to tremors and collisions.

[0004] If a robotic arm is directly used to grab and clean, there will be cleaning dead corners (the suction cup grabbing area), and secondary cleaning is still required, and the equipment cost is relatively high. How to completely expose the bottom surface without turning over to perform operations such as grinding or inspection is an urgent problem to be solved today.

[0005] Therefore, a back side cleaning system for carrier glass is needed to solve the above problems. Summary of the Invention

[0006] To solve the deficiencies of the above-mentioned prior art, this application provides a cleaning system for the back side of display glass, which can adsorb the upper surface of the carrier glass to expose the bottom surface, and then perform the cleaning operation on the back side without turning over, greatly improving the efficiency and the qualified rate of the carrier glass.

[0007] The technical effects to be achieved by this application are realized through the following solutions:

[0008] According to the first aspect of this application, a cleaning system for the back side of display glass is provided, including an input roller table and an output roller table. A hanging roller table is arranged between the input roller table and the output roller table. One part of both ends of the hanging roller table is stacked above the input roller table or the output roller table respectively; a cleaning mechanism is arranged directly below the hanging track. The cleaning mechanism includes a lifting cylinder and a cleaning head, and the lifting cylinder drives the cleaning head to move vertically; the hanging roller table includes a hanging frame and a conveying crawler belt wound around the hanging frame. A plurality of adsorption devices are evenly arranged on the conveying crawler belt, and all the adsorption devices are arranged outward, and the conveying crawler belt is driven by a conveying motor.

[0009] Through this solution, the carrier glass reaches the bottom of the hanging roller path through the input roller path. The hanging roller path moves synchronously with the input roller path and the output roller path. Then, the carrier glass can be adsorbed by the adsorption device and transported by hanging until the bottom surface of the carrier glass is completely exposed. Accordingly, corresponding devices can be arranged below the hanging roller path for operation. After processing, it moves to the output roller path and is output by the output roller path after the adsorption device releases it.

[0010] Preferably, a plurality of driving shafts arranged in parallel are rotatably connected to the hanger. A plurality of sprockets are arranged on the driving shafts, and the sprockets are engaged with the conveying track belts. A supporting mechanism matching the sprockets is arranged on the hanger, and the supporting mechanism is used to support the bottom of the conveying track belt directly below the sprockets.

[0011] Through this solution, the supporting mechanism can support the conveying track belt, avoiding sagging caused by the weight of the carrier glass during the hanging transportation process, which may cause the conveying track belt to disengage from the sprockets and affect the conveying effect. Moreover, it can prevent the partial sagging of the conveying track belt from affecting the levelness, further affecting the fixed conveying effect of the carrier glass or causing an excessive arc of the carrier glass and affecting the processing.

[0012] Preferably, the supporting mechanism includes a support frame and guide wheels. The support frame supports the guide wheels to extend to the bottom of the conveying track belt, and the guide wheels are in rolling connection with the conveying track belt.

[0013] Through this solution, the guide wheels can reduce the friction with the conveying track belt, ensure the stability of the conveying process, and avoid the risk of the carrier glass falling due to jitter.

[0014] Preferably, there are two parallel conveying track belts. The supporting mechanism is arranged on both sides of each conveying track belt, and at least one row of the adsorption devices is arranged on the conveying track belt.

[0015] Through this solution, there is a supporting mechanism on both sides of each conveying track belt, which can increase the density of the supporting mechanism, further reduce the sagging arc of the conveying track belt, and improve the conveying quality and the quality of adsorption and fixation.

[0016] Preferably, two pairs of the sprockets are arranged on the same driving shaft. The same pair of sprockets drives one conveying track belt, and the adsorption device is arranged between the sprockets.

[0017] Through this solution, both sides of the adsorption device can be supported to ensure stability. Moreover, driving two conveying track belts by the same driving shaft can improve the synchronism and avoid damage or dropping of the adsorption device caused by different linear speeds.

[0018] Preferably, the adsorption device includes an exhaust pipe and a suction cup. The exhaust pipe is fixed to the conveyor belt, and the suction cup is fixed to the bottom of the exhaust pipe and communicates therewith. A check valve is provided in the exhaust pipe, and the check valve is used to evacuate the air in the suction cup.

[0019] With this solution, after the suction cup is pressed against the carrier plate glass, the check valve in the exhaust pipe can discharge air without allowing external air to enter, ensuring the firmness and reliability of the suction cup adsorption.

[0020] Preferably, a pressing guide rail is fixed to the hanger, and the pressing guide rail is used to press the adsorption device against the carrier plate glass on the input roller track.

[0021] With this solution, the pressing guide rail can squeeze the exhaust pipe, ensuring that the suction cup can closely adhere to the carrier plate glass and squeeze out the internal air, avoiding the problem of insecure adsorption caused by the deformation of the conveyor belt itself.

[0022] Preferably, a pressing arm is fixed to the exhaust pipe, and the pressing guide rail cooperates with the pressing arm to press the adsorption device downward.

[0023] With this solution, by using the contact between the pressing arm and the pressing guide rail, it avoids the wear caused by the direct friction contact between the exhaust pipe and the pressing track; and it also avoids the blockage of the exhaust pipe caused by the pressing track directly pressing the exhaust pipe.

[0024] Preferably, the check valve includes a valve core, a sealing head and a spring. The sealing head is fixed to the bottom of the valve core and is slidably connected to the exhaust pipe. The sealing head is used to seal the opening at the top of the suction cup, and the spring always applies a thrust to make the sealing head seal the opening; a release arm is provided at the top of the valve core, and a release rail is provided on the hanger above the output roller track, and the release rail is used to lift the valve core.

[0025] With this solution, after the release arm moves to the release rail, the release rail can lift it to open the opening to facilitate the entry of air into the suction cup. Without the vacuum adsorption effect, the suction cup releases the carrier plate glass, so that the carrier plate glass is naturally placed on the output roller track.

[0026] Preferably, a number of jet nozzles are provided on one side of the release rail, and a blow hole is provided on the exhaust pipe, and the jet nozzles and the blow holes are at the same height.

[0027] With this solution, after the adsorption device moves to the release rail, the suction cup cannot naturally inhale air for release due to long-term adsorption deformation. Therefore, when passing through the jet nozzles, high-pressure air is blown into the blow holes to assist the suction cup in releasing the carrier plate glass, further improving the reliability.

[0028] According to an embodiment of the present application, the beneficial effect of adopting the back cleaning system of the display glass is that the carrier glass can be suspended and conveyed under the adsorption of the hanging track, so that the bottom surface of the carrier glass is completely exposed, facilitating processing or inspection operations without flipping. This not only improves the processing or inspection efficiency but also prevents damage to the carrier glass caused by flipping, thereby increasing the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 Structural schematic diagram of a back cleaning system for display glass in an embodiment of the present application;

[0031] Figure 2 For Figure 1 Cross-sectional structural schematic diagram of the hanging roller track in

[0032] Figure 3 For Figure 2 Top view structural schematic diagram of the hanger in

[0033] Figure 4 For Figure 1 Structural schematic diagram of the adsorption device in

[0034] Figure 5 For Figure 4 Cross-sectional structural schematic diagram of the adsorption device in

[0035] Figure 6 For Figure 5 Position structural schematic diagram of the exhaust pipe and the jet head in

[0036] Figure 7 For Figure 1 Structural schematic diagram of the hanging roller track in

[0037] Figure 8 For Figure 1 Structural schematic diagram of the cleaning mechanism in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0039] As Figures 1 to 8 shown, the display glass back cleaning system in an embodiment of this application includes an input roller table 201 and an output roller table 202. A hanging roller table 100 is provided between the input roller table 201 and the output roller table 202. A part of both ends of the hanging roller table 100 is stacked above the input roller table 201 or above the output roller table 202 respectively; a cleaning mechanism 300 is arranged directly below the hanging roller track 100. The cleaning mechanism includes a lifting cylinder 310 and a cleaning head 320. The lifting cylinder 310 drives the cleaning head 320 to move vertically; the hanging roller table 100 includes a hanging frame 110 and a conveying track belt 120 wound around the hanging frame 110. A plurality of adsorption devices 130 are evenly arranged on the conveying track belt 120. The adsorption devices 130 are all arranged outward. The conveying track belt 120 is driven by a conveying motor.

[0040] Through the solution of this embodiment, the carrier glass reaches the bottom of the hanging roller table 100 through the input roller table 201. The hanging roller table 100 moves synchronously with the input roller table 201 and the output roller table 202. Then, the carrier glass can be adsorbed by the adsorption devices 130 and hung and conveyed until the bottom surface of the carrier glass is completely exposed. Then, corresponding devices can be arranged below the hanging roller table 100 for operation. After processing is completed, it is moved to the output roller table 202. After the adsorption devices 130 release it, it is output by the output roller table 202.

[0041] The input roller table 201 and the output roller table 202 in this embodiment are traditional roller tables, with a certain distance between them to facilitate placing processing stations. The length of the hanging roller table 100 is greater than this interval distance, and the linear speeds are the same, which can enable the carrier glass to be smoothly transferred to the hanging roller table 100.

[0042] A plurality of brush rollers 321 are provided on the cleaning head. The brush rollers 321 can be driven to perform scrubbing operations. The cleaning head 320 may also include a plurality of water spray heads and scrapers for spraying water and scraping water.

[0043] In an embodiment of the present application, a plurality of driving shafts 111 arranged in parallel are rotatably connected to the hanger 110. A plurality of sprockets 112 are arranged on the driving shafts 111, and the sprockets 112 are engaged with the conveying crawler 120. A supporting mechanism 140 matching the sprockets 112 is arranged on the hanger 110, and the supporting mechanism 140 is used to support the bottom of the conveying crawler 120 directly below the sprockets 112. The supporting mechanism 140 can support the conveying crawler 120, avoiding sagging caused by the weight of the carrier glass during the hanging transportation, thus causing the conveying crawler 120 to disengage from the sprockets 112 and affecting the conveying effect. Moreover, it avoids affecting the flatness due to partial sagging of the conveying crawler 120, further affecting the fixed conveying effect of the carrier glass, or causing too large an arc of the carrier glass and affecting the processing.

[0044] The conveying crawler 120 can be a belt or a metal chain plate, and tooth grooves matching the sprockets 112 are arranged on the inner surface, and can be engaged for transmission. The conveying motor drives one or more sprockets 112 to rotate.

[0045] In an embodiment of the present application, the supporting mechanism 140 includes a support frame 141 and a guide wheel 142. The support frame 141 supports the guide wheel 142 to extend to the bottom of the conveying crawler 120, and the guide wheel 142 is in rolling connection with the conveying crawler 120. The guide wheel 142 can reduce the friction with the conveying crawler 120, ensure the stability of the conveying process, and avoid the risk of the carrier glass falling due to jitter.

[0046] The support frame 141 is L-shaped. After the top is fixed to the hanger 110, the bottom is provided with a guide wheel 142 and supports to the sprocket 112, and clamps the conveying crawler 120 together with the sprocket 112.

[0047] In an embodiment of the present application, there are two parallel conveying crawlers 120, and the supporting mechanism 140 is arranged on both sides of each conveying crawler 120, and at least one row of the adsorption devices 130 is arranged on the conveying crawler 120. The supporting mechanism 140 is arranged on both sides of each conveying crawler 120, which can increase the density of the supporting mechanism 140, further reduce the sagging arc of the conveying crawler 120, and improve the conveying quality and the quality of adsorption and fixation.

[0048] A plurality of cross beams are arranged in the hanger 110, and the driving shafts 111 penetrate through the cross beams and are rotatably connected thereto, improving the stability.

[0049] In an embodiment of the present application, two pairs of the sprockets 112 are arranged on the same driving shaft 111, and the same pair of the sprockets 112 drives one conveying track 120, and the adsorption device 130 is arranged between the sprockets 112. Both sides of the adsorption device 130 can be supported to ensure stability. Moreover, the same driving shaft 111 drives the two conveying tracks 120, which can improve synchronization and avoid damage or dropping of the adsorption device 130 caused by pulling due to different linear speeds.

[0050] In an embodiment of the present application, the adsorption device 130 includes an exhaust cylinder 131 and a suction cup 132. The exhaust cylinder 131 is fixed to the conveying track 120, the suction cup 132 is fixed to the bottom of the exhaust cylinder 131 and communicates with it, and a one-way valve is arranged in the exhaust cylinder 131. The one-way valve is used to evacuate the air in the suction cup 132. After the suction cup 132 is pressed against the carrier glass, the one-way valve in the exhaust cylinder 131 can discharge the air without allowing external air to enter, ensuring the firmness and reliability of the adsorption of the suction cup 132.

[0051] The exhaust cylinder 131 is made of metal material. After passing through the conveying track 120, it is clamped and fixed to the conveying track 120 by means of nuts or the like. The exhaust cylinder 131 is perpendicular to the conveying track 120 to ensure that the suction cup 132 can be parallel to the carrier glass.

[0052] The exhaust cylinder 131 is in a cylindrical shape, and the opening 1311 at the bottom communicates with the suction cup 132, so that the air in the suction cup 132 can be discharged through the opening 1311 and the exhaust cylinder 131, and thus be adsorbed and fixed under the action of atmospheric pressure.

[0053] In an embodiment of the present application, a pressing guide rail 113 is fixed on the hanger 110. The pressing guide rail 113 is used to press the adsorption device 130 against the carrier glass on the input roller path 201. The pressing guide rail 113 can squeeze the exhaust cylinder 131 to ensure that the suction cup 132 can closely adhere to the carrier glass and squeeze out the internal air, avoiding the problem of insecure adsorption caused by the deformation of the conveying track 120 itself.

[0054] The pressing guide rail 113 is located at the front end of the hanging roller path 100, and the front end of the pressing track is in a streamlined structure that tilts upward, which is convenient for guiding the adsorption device 130. Since the moving speed of the suction cup 132 is the same as that of the carrier glass, it can be pressed in a relatively static state to complete the adsorption and fixation.

[0055] In an embodiment of the present application, a pressing arm 134 is fixed on the exhaust pipe 131, and the pressing guide rail 113 cooperates with the pressing arm 134 to press the adsorption device 130 downward. By using the contact between the pressing arm 134 and the pressing guide rail 113, it is possible to avoid the wear caused by the direct frictional contact between the exhaust pipe 131 and the pressing track; moreover, it is possible to avoid the blockage of the exhaust pipe 131 caused by the direct pressing of the pressing track on the exhaust pipe 131.

[0056] The pressing arm 134 is detachably connected to the exhaust pipe 131, which is convenient for replacement and adjustment, so as to adapt to the adsorption of carrier glass with different thicknesses.

[0057] In an embodiment of the present application, the one-way valve includes a valve core 1331, a sealing head 1332 and a spring 1333. The sealing head 1332 is fixed to the bottom of the valve core 1331 and slidably connected to the exhaust pipe 131. The sealing head 1332 is used to seal the opening 1311 at the top of the suction cup 132. The spring 1333 always applies a thrust to make the sealing head 1332 seal the opening 1311; a release arm 135 is provided at the top of the valve core 1331, and a release rail 114 is provided on the hanger 110 above the output roller path 202. The release rail 114 is used to lift the valve core 1331. After the release arm 135 moves to the release rail 114, the release rail 114 can lift it to open the opening 1311, so as to facilitate the entry of air into the suction cup 132. Without the vacuum adsorption effect, the suction cup 132 releases the carrier glass, so that the carrier glass is naturally placed on the output roller path 202.

[0058] The outer diameter of the sealing head 1332 is smaller than the inner diameter of the exhaust pipe 131, that is, there is a gap between the two, which is convenient for the air in the suction cup 132 to be discharged; the opening 1311 is trapezoidal, and the bottom of the sealing head 1332 is also trapezoidal, which can provide guidance.

[0059] The release rail 114 is fixed to the rear end of the hanger 110, and the front end of the release rail 114 is flush with the front end of the output roller path 202, which can ensure that the release is completed when the carrier glass is conveyed to the output track. The front end of the release rail 114 is an arc-shaped inclined downward, which can make the release arm 135 slide smoothly onto the release rail 114 and lift the release arm 135 to complete the release of the suction cup 132.

[0060] The pressing guide rail 113 and the release rail 114 are made of materials such as aluminum alloy and steel, and have high strength and wear resistance.

[0061] In an embodiment of the present application, a number of jet nozzles 136 are provided on one side of the release rail 114, and air blowing holes 1312 are provided on the exhaust cylinder 131. The jet nozzles 136 and the air blowing holes 1312 are at the same height. After the adsorption device 130 moves to the release rail 114, the suction cup 132 cannot naturally inhale air for release due to long-term adsorption deformation. Therefore, when passing through the jet nozzles 136, high-pressure air is blown into the air blowing holes 1312 to assist the suction cup 132 in releasing the carrier glass, further improving the reliability.

[0062] According to an embodiment of the present application, the beneficial effect of adopting the back cleaning system of the display glass is that the carrier glass can be suspended and transported under the adsorption of the hanging track, so that the bottom surface of the carrier glass is completely exposed, facilitating processing or inspection operations without flipping, thereby not only improving the processing or inspection efficiency, but also not causing damage to the carrier glass due to flipping, and improving the product qualification rate.

[0063] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0066] In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0067] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be otherwise positioned, such as rotated 90 degrees or at other orientations, and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0068] In the foregoing detailed description, reference has been made to the accompanying drawings, which form a part hereof. In the drawings, like symbols typically identify like components, unless the context indicates otherwise. The illustrated embodiments described in the detailed description, the drawings, and the claims are not meant to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display glass back cleaning system, comprising an input roller and an output roller, characterized in that: A hanging roller is arranged between the input roller and the output roller, and a part of both ends of the hanging roller are respectively stacked above the input roller or the output roller; a cleaning mechanism is arranged directly below the hanging track, and the cleaning mechanism includes a lifting cylinder and a cleaning head, and the lifting cylinder drives the cleaning head to move vertically; the hanging roller includes a hanger and a conveyor belt wrapped around the hanger, and a plurality of adsorption devices are evenly arranged on the conveyor belt, and the adsorption devices are all arranged outward, and the conveyor belt is driven by a conveying motor.

2. The display glass back cleaning system according to claim 1, characterized in that: The hanger is rotatably connected to a plurality of parallel drive shafts, the drive shafts are provided with a plurality of sprockets, and the sprockets are engaged with the conveyor belt; the hanger is provided with a supporting mechanism matching the sprockets, and the supporting mechanism is used to support the bottom of the conveyor belt directly below the sprockets.

3. The display glass back cleaning system according to claim 2, characterized in that: The support mechanism includes a support frame and a guide wheel. The support frame supports the guide wheel to extend to the bottom of the conveying crawler, and the guide wheel is rollingly connected to the conveying crawler.

4. The display glass back cleaning system according to claim 2, characterized in that: There are two conveying crawlers arranged in parallel, and the supporting mechanisms are arranged on both sides of each conveying crawler. At least one row of the adsorption devices is arranged on the conveying crawler.

5. The display glass back cleaning system according to claim 4, characterized in that: Two pairs of sprockets are arranged on the same driving shaft, and the same pair of sprockets drives one conveying crawler, and the adsorption device is arranged between the sprockets.

6. The display glass back cleaning system according to claim 1, characterized in that: The adsorption device includes an exhaust cylinder and a suction cup, wherein the exhaust cylinder is fixed to the conveying crawler, and the suction cup is fixed to the bottom of the exhaust cylinder and is connected thereto, and a one-way valve is provided in the exhaust cylinder, and the one-way valve is used to exhaust the air in the suction cup.

7. The display glass back cleaning system according to claim 6, characterized in that: A clamping guide rail is fixed on the hanger, and the clamping guide rail is used to clamp the adsorption device onto the carrier glass on the input roller.

8. The display glass back cleaning system according to claim 7, characterized in that: A pressing arm is fixed on the exhaust pipe, and the pressing guide rail cooperates with the pressing arm to press the adsorption device downward.

9. The display glass back cleaning system according to claim 6, characterized in that: The one-way valve includes a valve core, a sealing head and a spring. The sealing head is fixed to the bottom of the valve core and slidably connected to the exhaust pipe. The sealing head is used to seal the opening at the top of the suction cup. The spring always applies a thrust to make the sealing head seal the opening. A release arm is provided at the top of the valve core, and a release rail is provided on the hanger above the output roller. The release rail is used to lift the valve core.

10. The display glass back cleaning system according to claim 9, characterized in that: A plurality of air jet heads are arranged on one side of the release rail, and an air blowing hole is arranged on the exhaust pipe, and the height of the air jet heads is consistent with that of the air blowing hole.

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