Cleaning mechanism and spraying device

Abstract

The utility model belongs to the technical field of substrate spraying equipment, and discloses a cleaning mechanism and a spraying device. The cleaning mechanism comprises a cleaning part and a driving assembly, one end of the cleaning part is inserted into the spraying opening, and the cleaning part can reciprocate in the length direction of the spraying opening; the driving assembly comprises a driving piece, a lead screw and a driving block, the driving piece is located at one end of the lead screw and can drive the lead screw to rotate, the driving piece and one end of the lead screw are in transmission through the transmission assembly, the lead screw penetrates through the driving block and is in threaded connection with the driving block, and the driving block is connected to the other end of the cleaning piece. According to the cleaning mechanism, the cleaning piece is driven by the driving assembly to move in the length direction of the spraying opening, so that the spraying opening is cleaned, substances blocking the spraying opening are removed, and the spraying opening is not prone to being blocked. In addition, overload of the driving part and damage of the cleaning part can be prevented through the transmission assembly, the working stability of the cleaning mechanism can be improved, and the working life of the cleaning mechanism is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to substrate spraying equipment technical field especially relates to a cleaning mechanism and spraying device. BACKGROUND

[0002] In the production process of display panel, the substrate can be sprayed with developing solution by spraying device to dissolve the soluble area of photoresist caused by exposure, so as to ensure the developing effect of the substrate. In addition, the substrate can also be sprayed with cleaning solution by spraying device, so as to clean the substrate.

[0003] The current spraying device mainly comprises a spraying knife, the spraying knife has a spraying cavity for storing spraying liquid inside, the bottom of the spraying knife has a spraying port communicated with the spraying cavity, the spraying port is in the form of a slit and extends along the length direction of the spraying knife, and a continuous liquid curtain is generated at the spraying port when the spraying knife is working, so that the spraying liquid is uniformly sprayed on the surface of the substrate.

[0004] Since some impurities are mixed in the spraying liquid, and the spraying port is not only narrow but also scales, the impurities are easy to block the spraying port, so that the flow of the spraying port is not uniform, and the liquid curtain may even bifurcate in severe cases, which seriously affects the spraying effect of the substrate. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cleaning mechanism and spraying device to scrape and wash the spraying port, so that the spraying port is not easy to be blocked, and finally the spraying effect of the substrate is improved.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] The cleaning mechanism is used for cleaning the spraying port of the spraying knife, and comprises:

[0008] A cleaning piece, one end of the cleaning piece is inserted into the spraying port and can reciprocate along the length direction of the spraying port; and

[0009] A driving assembly, the driving assembly comprises a driving piece, a lead screw and a driving block, the driving piece is located at one end of the lead screw, the driving piece can drive the lead screw to rotate, the driving piece and one end of the lead screw are connected through a transmission assembly, the transmission assembly can generate a speed difference between the output shaft of the driving piece and the lead screw; the axis of the lead screw is parallel to the length direction of the spraying port, the lead screw penetrates the driving block and is threadedly connected with the driving block, and the driving block is connected to the other end of the cleaning piece.

[0010] Preferably, the cleaning member is in the form of a sheet, the thickness direction of the cleaning member coincides with the width direction of the spray port, the cleaning member abuts against the side wall of the spray port and can slide relative to the side wall of the spray port.

[0011] Preferably, the cleaning member is provided with a blade on both sides along the length direction of the spray port.

[0012] Preferably, the transmission assembly comprises:

[0013] a driving magnetic wheel coaxially connected to the output shaft of the driving member; and

[0014] a driven magnetic wheel spaced apart from the driving magnetic wheel, the driving magnetic wheel being capable of driving the driven magnetic wheel to rotate, the driven magnetic wheel being coaxially connected to one end of the lead screw.

[0015] Preferably, the transmission assembly comprises:

[0016] a driving friction wheel coaxially connected to the output shaft of the driving member; and

[0017] a driven friction wheel abutting against the driving friction wheel, the driving friction wheel being capable of driving the driven friction wheel to rotate, the driven friction wheel being coaxially connected to one end of the lead screw.

[0018] Preferably, the transmission assembly is a hydraulic coupler.

[0019] Preferably, the driving member is an electric motor or a hydraulic motor.

[0020] Preferably, the cleaning mechanism further comprises a control assembly, the control assembly comprising:

[0021] a sensor located at one end of the length direction of the spray knife, the sensor being capable of detecting the relative position of the cleaning member in the length direction of the spray port and the spray port; and

[0022] a controller electrically connected to the sensor and the driving member, the controller being capable of controlling the driving member to stop working or driving the lead screw to rotate reversely when the cleaning member moves to both ends of the length direction of the spray port.

[0023] Preferably, the control assembly further comprises:

[0024] a limiting block, one of the limiting blocks being provided corresponding to each end of the spray knife, and one of the sensors being provided on each of the limiting blocks.

[0025] The utility model discloses a spraying device, the spraying device includes spraying knife, and the bottom of spraying knife is provided with spraying port, and its characterized in that, the spraying device further includes cleaning mechanism.

[0026] The utility model discloses the beneficial effect:

[0027] The cleaning mechanism of the utility model, through the rotation of the driving piece drive screw, to make the driving block drive cleaning piece move along the length direction of the spraying port, thereby cleaning the spraying port, remove the material that blocks the spraying port, make the spraying port not easy to block, promote the spraying effect to the base plate. In addition, utilize transmission assembly when the cleaning piece meets greater resistance and make the output shaft and screw between driving piece produce the speed difference, make driving piece can produce the skid relative to screw, thereby prevent driving piece overload and the damage of cleaning piece, reach the effect of protection driving piece and cleaning piece, help to promote the stability of cleaning mechanism work, and prolong the working life of cleaning mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structure schematic diagram of the spraying device of the utility model;

[0029] Figure 2 It is the structure schematic diagram of the spraying knife of the utility model;

[0030] Figure 3 It is Figure 1 The sectional view of A-A direction in it.

[0031] In the drawing:

[0032] 100, spraying knife; 101, spraying port; 102, spraying cavity; 103, liquid inlet; 200, base plate; 1, cleaning piece; 2, driving assembly; 21, driving piece; 22, screw; 23, driving block; 3, transmission assembly; 31, driving magnetic wheel; 32, driven magnetic wheel; 41, limit block. DETAILED DESCRIPTION

[0033] The utility model makes further detailed explanation in combination with the drawings and embodiment. It can be understood that the specific embodiment described here is only used to explain the utility model, and is not limited to the utility model. In addition, it needs to be explained that, for the convenience of description, only the part related to the utility model is shown in the drawing, not all structures.

[0034] In the description of the utility model, unless another definite provision and limit, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through the intermediate medium indirectly connect, can be two element internal communication or two element's interaction relationship.For the ordinary skill in the art, the above-mentioned term can be understood in the utility model with the concrete meaning of the specific situation.

[0035] In the utility model, unless another definite provision and limit, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0036] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0037] The following refers to Figures 1 to 3 The cleaning mechanism and the spraying device provided by the utility model are described.

[0038] Referring to Figures 1 to 3 The spraying device includes a conveying mechanism (not shown in the figure), a spraying knife 100 and a cleaning mechanism, the conveying mechanism is used for conveying a substrate 200, the spraying knife 100 is arranged above the conveying mechanism, and the cleaning mechanism is arranged on the conveying mechanism.

[0039] Specifically, the conveying mechanism is any conveying mechanism capable of conveying the substrate 200 in the prior art, and the specific form is not limited, and the embodiment takes a roller conveying mechanism as an example. The spray knife 100 is connected to the rack of the roller conveying mechanism through a rod, the length direction of the spray knife 100 is perpendicular to the conveying direction of the conveying mechanism, the spray knife 100 has a spray cavity 102 inside, the spray knife 100 is connected with a liquid inlet 103 communicating with the spray cavity 102, the inside of the spray cavity 102 can be added with spray liquid through the liquid inlet 103, and the bottom of the spray knife 100 is provided with a spray port 101, the spray port 101 is in the form of a slit and extends along the length direction of the spray knife 100.

[0040] When the spray device is working, the substrate 200 is conveyed through the conveying mechanism, and when the substrate 200 reaches the lower side of the spray knife 100, the surface of the substrate 200 is uniformly sprayed through the spray port 101. In other embodiments, the spray knife 100 can also be directly arranged on the ground or suspended on the top of the factory building.

[0041] The cleaning mechanism is used to clean the spray port 101 to remove substances blocking the spray port 101, so that the spray port 101 is not easy to be blocked, and the spraying effect on the substrate 200 is improved. The exemplary structure of the cleaning mechanism is described in the following embodiments.

[0042] Embodiment one

[0043] The cleaning mechanism includes a cleaning piece 1 and a driving assembly 2, one end of the cleaning piece 1 is inserted into the spray port 101 and can reciprocate along the length direction of the spray port 101, and the driving assembly 2 can drive the cleaning piece 1 to move.

[0044] Specifically, the cleaning piece 1 is in the form of a sheet, the thickness direction of the cleaning piece 1 coincides with the width direction of the spray port 101, the cleaning piece 1 abuts against the side wall of the spray port 101 and can slide relative to the side wall of the spray port 101. When the cleaning piece 1 slides along the length direction of the spray port 101, the impurities at the spray port 101 are cleaned, so that the impurities blocking the spray port 101 are removed, and the side wall of the spray port 101 is scraped and washed to remove the dirt on the side wall of the spray port 101, so that the spray port 101 can form a liquid curtain with uniform flow, and the spraying effect on the substrate 200 is improved.

[0045] In addition, in order to reduce the movement resistance of the cleaning piece 1, the cleaning piece 1 is provided with a blade on both sides distributed along the length direction of the spray port 101, so that when the cleaning piece 1 extrudes the impurities, the pressure on the impurities can be increased to reduce the resistance of the forward movement and prevent the cleaning piece 1 from being stuck during the cleaning operation.

[0046] Exemplarily, the driving assembly 2 comprises a driving member 21, a lead screw 22 and a driving block 23. In the embodiment, the lead screw 22 is located directly below the spray port 101 and is arranged below the substrate 200. The axis of the lead screw 22 is parallel to the length direction of the spray port 101. The lead screw 22 is rotationally connected to the rack of the conveying mechanism. The lead screw 22 penetrates the driving block 23 and is threadedly connected to the driving block 23. The driving block 23 is connected to the other end of the cleaning member 1.

[0047] Further, the driving member 21 is located at one end of the lead screw 22. The driving member 21 can drive the lead screw 22 to rotate. The driving member 21 is a motor or a hydraulic motor. In the embodiment, the driving member 21 is exemplified by a motor. The motor is fixedly connected to the rack of the conveying mechanism by a plate member. The driving member 21 and the end of the lead screw 22 are driven by a transmission assembly 3. The transmission assembly 3 can generate a speed difference between the output shaft of the driving member 21 and the lead screw 22.

[0048] Through the above arrangement, when the driving member 21 works, the lead screw 22 is driven to rotate by the transmission assembly 3, so that the driving block 23 drives the cleaning member 1 to move. When the impurities blocked in the spray port 101 are large and the scale on the side wall of the spray port 101 is thick, the cleaning member 1 will encounter a large resistance during movement. If the driving member 21 is directly fixedly connected to the lead screw 22, the driving member 21 will be overloaded or the cleaning member 1 will be damaged. In the embodiment, the transmission assembly 3 is arranged between the driving member 21 and the lead screw 22. The transmission assembly 3 generates a speed difference between the output shaft of the driving member 21 and the lead screw 22, i.e. the output shaft of the driving member 21 will slip to a certain extent, so as to prevent the driving member 21 from being overloaded, limit the torque transmitted from the driving member 21 to the lead screw 22, prevent the cleaning member 1 from being damaged, improve the stability of the cleaning mechanism and prolong the service life of the cleaning mechanism.

[0049] As a preferred, the transmission assembly 3 in the embodiment comprises a driving magnetic wheel 31 and a driven magnetic wheel 32. The driving magnetic wheel 31 is coaxially connected to the output shaft of the driving member 21. The driven magnetic wheel 32 is arranged at an interval from the driving magnetic wheel 31. The driving magnetic wheel 31 can drive the driven magnetic wheel 32 to rotate. The driven magnetic wheel 32 is coaxially connected to one end of the lead screw 22. The driving magnetic wheel 31 and the driven magnetic wheel 32 are respectively arranged with permanent magnets to form a magnetic pole pair. When the driving magnetic wheel 31 rotates, the magnetic field generated by the magnetic pole pair changes and interacts with the magnetic pole pair in the driven magnetic wheel 32. Through the attraction and repulsion of magnetic force, the driven magnetic wheel 32 is driven to rotate synchronously with the driving magnetic wheel 31.

[0050] Based on the above, through the power transmission of the driving magnetic wheel 31 and the driven magnetic wheel 32, when the driving magnetic wheel 31 is overloaded, i.e. exceeds the transmission load of the driving magnetic wheel 31, the driving magnetic wheel 31 will slip, the magnetic coupling will be temporarily disabled, thereby achieving the effect of protecting the driving member 21. In addition, the driving magnetic wheel 31 and the driven magnetic wheel 32 are non-contact transmission, and the driving magnetic wheel 31 and the driven magnetic wheel 32 will not be worn after long-term use. Not only can the service life be prolonged, but also metal debris will not be generated, which is not easy to pollute the production workshop of the display panel.

[0051] Since the cleaning member 1 needs to move back and forth during work, in order to accurately control the movement direction and movement stroke of the cleaning member 1, the cleaning mechanism further comprises a control assembly, the control assembly comprising a sensor, a controller and a limiting block 41, the controller being electrically connected to the sensor and the driving member 21, the sensor being located at one end of the length direction of the spraying knife 100, and the sensor being capable of detecting the relative position of the cleaning member 1 to the spraying port 101 in the length direction of the spraying port 101; when the cleaning member 1 moves to both ends of the length direction of the spraying port 101, the controller can control the driving member 21 to stop working or drive the lead screw 22 to rotate reversely.

[0052] Specifically, in the embodiment, one limiting block 41 is arranged at each end of the length direction of the spraying knife 100, the limiting block 41 is fixedly connected to the conveying mechanism through a rod, the sensor is a proximity switch, and one proximity switch is arranged on each limiting block 41. When the spraying knife 100 moves to one end of the spraying port 101, one of the proximity switches detects the driving block 23 and transmits an electrical signal to the controller, and then the controller controls the driving member 21 to stop working; when the spraying port 101 needs to be cleaned again, the controller controls the driving member 21 to continue working, and the lead screw 22 reversely rotates until the spraying knife 100 moves to the other end of the spraying port 101, at this time, the other proximity switch detects the driving block 23, and then the controller controls the driving member 21 to stop working.

[0053] In other embodiments, only one proximity switch can be arranged, when the spraying knife 100 moves to the proximity switch, the controller controls the driving member 21 to stop working, when the spraying port 101 needs to be cleaned again, the controller controls the driving member 21 to continue working, the movement stroke of the spraying knife 100 is determined by the preset rotation number of the motor, and the driving member 21 stops working after the spraying knife 100 reaches the movement stroke.

[0054] Optionally, in other embodiments, the sensor can also be a distance sensor to detect the distance between the sensor and the driving block 23, so as to calculate the position of the cleaning member 1 relative to the spray port 101 through the distance between the distance sensor and the driving block 23, so as to control the driving member 21 to stop working or reverse the driving member 21 when the cleaning member 1 reaches both ends of the spray port 101 through the controller.

[0055] Embodiment two

[0056] The difference between the embodiment and the embodiment one is that the transmission assembly 3 in the embodiment comprises a driving friction wheel and a driven friction wheel, the driving friction wheel is coaxially connected to the output shaft of the driving member 21, the driven friction wheel abuts against the driving friction wheel, the driving friction wheel can drive the driven friction wheel to rotate, and the driven friction wheel is coaxially connected to one end of the lead screw 22. In the transmission process of the driving friction wheel and the driven friction wheel, the overload protection of the driving member 21 is realized through the slip of the driving friction wheel.

[0057] Embodiment three

[0058] The difference between the embodiment and the embodiment one is that the transmission assembly 3 in the embodiment is a hydraulic coupler, so that the overload protection of the driving member 21 is realized through the hydraulic coupler.

[0059] Obviously, the above embodiments of the utility model are only for the purpose of clear illustration of the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A cleaning mechanism for cleaning the spray nozzles (101) of a spray blade (100), characterized in that, The cleaning mechanism includes: A cleaning component (1), one end of which is inserted into the spray nozzle (101) and is capable of reciprocating along the length of the spray nozzle (101); and The drive assembly (2) includes a drive member (21), a lead screw (22), and a drive block (23). The drive member (21) is located at one end of the lead screw (22) and can drive the lead screw (22) to rotate. The drive member (21) and one end of the lead screw (22) are connected by a transmission assembly (3). The transmission assembly (3) can generate a speed difference between the output shaft of the drive member (21) and the lead screw (22). The axis of the lead screw (22) is parallel to the length direction of the spray nozzle (101). The lead screw (22) passes through the drive block (23) and is threadedly connected to the drive block (23). The drive block (23) is connected to the other end of the cleaning member (1).

2. The cleaning mechanism according to claim 1, characterized in that, The cleaning component (1) is in the form of a sheet, and the thickness direction of the cleaning component (1) coincides with the width direction of the spray nozzle (101). The cleaning component (1) abuts against the side wall of the spray nozzle (101) and can slide relative to the side wall of the spray nozzle (101).

3. The cleaning mechanism according to claim 2, characterized in that, The cleaning component (1) has cutting edges on both sides distributed along the length of the spray nozzle (101).

4. The cleaning mechanism according to claim 1, characterized in that, The transmission assembly (3) includes: An active magnetic wheel (31) is coaxially connected to the output shaft of the drive member (21); and The driven magnetic wheel (32) is spaced apart from the driving magnetic wheel (31). The driving magnetic wheel (31) can drive the driven magnetic wheel (32) to rotate. The driven magnetic wheel (32) is coaxially connected to one end of the lead screw (22).

5. The cleaning mechanism according to claim 1, characterized in that, The transmission assembly (3) includes: An active friction wheel, coaxially connected to the output shaft of the drive unit (21); and The driven friction wheel abuts against the driving friction wheel, and the driving friction wheel can drive the driven friction wheel to rotate. The driven friction wheel is coaxially connected to one end of the lead screw (22).

6. The cleaning mechanism according to claim 1, characterized in that, The transmission component (3) is a hydraulic coupling.

7. The cleaning mechanism according to any one of claims 1-6, characterized in that, The driving component (21) is an electric motor or a hydraulic motor.

8. The cleaning mechanism according to any one of claims 1-6, characterized in that, The cleaning mechanism further includes a control component, which includes: A sensor, located at one end of the spray blade (100) along its length, is capable of detecting the relative position of the cleaning component (1) to the spray nozzle (101) along its length; and The controller is electrically connected to the sensor and the drive (21). When the cleaning component (1) moves to both ends of the spray nozzle (101) in the length direction, the controller can control the drive (21) to stop working or drive the lead screw (22) to rotate in the opposite direction.

9. The cleaning mechanism according to claim 8, characterized in that, The control component also includes: Limiting blocks (41) are provided at both ends of the spray blade (100), and sensors are provided on each limiting block (41).

10. A spraying device, the spraying device comprising a spray blade (100), wherein the bottom of the spray blade (100) is provided with a spray nozzle (101), characterized in that, The spraying device further includes a cleaning mechanism as described in any one of claims 1-9.

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