Automatic dust suction box for post-polishing of light guide plate

Abstract

The utility model discloses a kind of light guide plate polishing post-section automation dust suction box, it is related to light guide plate processing auxiliary equipment technical field, including dust suction box, dust suction box left side upper portion is equipped with dust suction port, dust suction port connects bellows, bellows end is equipped with dust joint and polishing machine dust outlet sealing connection;Collecting barrel is equipped in dust suction box inner bottom, front end hinged sealing box door;Collecting barrel upper portion can be detachably equipped with coarse filter screen, dust suction box top is equipped with air blower, air blower is connected with the air pipe between dust suction box suction port, air pipe is equipped with double gate automatic discharge valve;Suction port inside is equipped with fine filter screen, fine filter screen side is equipped with brush driven by driving motor;Dust suction box side wall is equipped with control box, and electric control connects air blower, discharge valve and driving motor.Working, air blower makes dust suction box form negative pressure, dust enters in turn through coarse filtration, fine filtration after bellows, double gate valve automatically removes to collecting barrel, driving motor drives brush to clean filter screen.The utility model is high in degree of automation and compact structure, and is suitable for dust-free room environment.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for light guide plate processing, specifically an automated dust collection box for the post-polishing stage of a light guide plate. Background Technology

[0002] As a core component in fields such as LCD displays and lighting equipment, the surface finish of light guide plates directly affects light transmission efficiency and uniformity. Therefore, polishing is a crucial post-processing step in light guide plate manufacturing. During the polishing process, a large amount of resin or glass dust with uneven particle size is generated. If not collected and treated effectively and promptly, this dust will not only pollute the production environment and cause secondary scratches on the light guide plate surface, affecting product quality, but also endanger the health of operators. Especially in cleanroom processing environments, dust spillage can compromise the cleanliness level of the cleanroom and cause production interruptions.

[0003] Currently, the dust collection equipment for polishing light guide plates on the market has problems such as a simple dust collection structure, which makes it easy to dirty the cleanroom when placed indoors for cleaning, the inability to adjust the chip removal time and cycle, or the large footprint.

[0004] Therefore, those skilled in the art have provided an automated dust collection box for the post-polishing section of a light guide plate to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to provide an automated dust collection box for the post-polishing stage of a light guide plate, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automated dust collection box for the post-polishing stage of a light guide plate includes a dust collection box. A dust collection port is provided on the upper left side of the dust collection box. A corrugated pipe is detachably connected to the outside of the dust collection port via a flange. The end of the corrugated pipe is provided with a tapered dustproof connector. The front end of the dustproof connector has an internal thread with a small diameter and the rear end has an external thread with a large diameter. The front internal thread engages with the external thread of the dust outlet of the polishing machine, and the rear external thread engages with the quick connector of the corrugated pipe. A collection bucket is provided at the bottom of the dust collection box. The collection bucket is adapted to the internal size of the dust collection box, and universal wheels are fixedly installed at the four corners of the bottom of the collection bucket.

[0007] As a further embodiment of this utility model: the front end of the dust collection box is open, and a sealed box door is hinged at the open end, and the sealed box door is equipped with a push-button lock.

[0008] As a further improvement of this utility model: a coarse filter screen is detachably installed inside the dust collection box above the collection bucket, and the installation height of the coarse filter screen is higher than the dust collection port.

[0009] As a further improvement of this utility model: a blower is fixedly installed on the top of the dust collection box, and an air intake is provided on the upper left side of the dust collection box. An air pipe is fixedly connected between the blower and the air intake.

[0010] As a further improvement of this utility model, a double-gate automatic discharge valve is fixedly installed on the air pipe.

[0011] As a further improvement of this utility model: a fine filter screen is detachably installed on the inner side of the air intake, and a brush is provided on one side of the fine filter screen.

[0012] As a further improvement of this utility model: a drive motor is fixedly installed on the upper right side of the dust collection box via a bracket, the output shaft of the drive motor is fixedly connected to a rotating shaft, and one end of the rotating shaft extends through into the dust collection box and is fixedly connected to a brush.

[0013] As a further improvement of this utility model: a control box is fixedly installed on the right side wall of the dust collection box, and the blower, the double-gate automatic discharge valve and the drive motor are all electrically connected to the control box.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 8. It adopts a graded filtration architecture of "coarse filtration + fine filtration" to avoid large dust particles directly impacting the fine filter and causing damage. At the same time, it is equipped with an automatic cleaning mechanism with a drive motor driving the brush at intervals to sweep the attached dust into the collection bucket, effectively reducing the probability of filter clogging. 9. The PLC controller enables fully automated operation of negative pressure regulation, chip removal control, and filter cleaning. The dual-gate automatic discharge valve adopts an alternating switch design of upper and lower gates, which can maintain stable negative pressure in the dust collection box during chip removal and avoid the negative pressure leakage problem caused by traditional single-gate discharge. 10. The compact structure and small footprint allow it to be flexibly adapted to the installation scenarios of small and medium-sized light guide plate polishing machines. The dustproof connector is modularly designed to adapt to the dust outlets of polishing machines of different specifications, thus improving the equipment's versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an automated dust collection box for the post-polishing section of a light guide plate.

[0016] Figure 2 This is a schematic diagram of the internal structure of an automated dust collection box for the post-polishing stage of a light guide plate.

[0017] Figure 3 This is a front view of an automated dust collection box for the post-polishing section of a light guide plate.

[0018] Figure 4 This is a schematic diagram of the structure of a fine filter and a brush in an automated dust collection box after the polishing of a light guide plate.

[0019] In the diagram: 1. Dust collection box; 2. Sealed door; 3. Corrugated pipe; 4. Dustproof connector; 5. Blower; 6. Air pipe; 7. Double gate automatic discharge valve; 8. Collection bucket; 9. Coarse filter screen; 10. Casters; 11. Drive motor; 12. Shaft; 13. Brush; 14. Fine filter screen; 15. Control box. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-4 This embodiment provides an automated dust collection box for the post-polishing stage of a light guide plate, including a dust collection box 1. The dust collection box 1 has a rectangular structure, with a dust suction port on the upper left side. A flange is welded to the outside of the dust suction port, and the dust suction port is detachably connected to a bellows 3 through the flange. The length of the bellows 3 can be adjusted according to the installation distance between the polishing machine and the dust collection box 1. The end of the bellows 3 is provided with a tapered dustproof connector 4. The small-diameter end of the dustproof connector 4 has an internal thread design, which directly engages with the external thread of the dust outlet of the polishing machine, and the large-diameter end of the rear end has an external thread design, which engages with the quick connector at the end of the bellows 3.

[0022] The dustbin 1 has a collection bucket 8 at its bottom, which is fitted to the internal dimensions of the dustbin 1. Four casters 10 are bolted to the bottom corners of the collection bucket 8 and have braking functions, facilitating the pulling out, moving, and positioning of the collection bucket 8. The front of the dustbin 1 is open, with a sealed door 2 hinged to it. A rubber sealing gasket is affixed to the inside of the sealed door 2, continuously distributed along the edge of the door to ensure a tight seal with the edge of the open dustbin 1 when closed. The sealed door 2 is equipped with a push-button lock; pressing it extends the latch and engages with the corresponding lock hole in the dustbin 1. Pressing it again unlocks the door, allowing the collection bucket 8 to be pulled out for cleaning via the casters 10.

[0023] A coarse filter 9 is detachably installed above the collection bin 8 inside the dust collection box 1 to intercept large dust particles. The installation height of the coarse filter 9 is higher than the dust inlet, ensuring that dust entering from the dust inlet is first filtered by the coarse filter 9, preventing large particles from directly impacting the subsequent fine filter components. When it is necessary to clean or replace the coarse filter 9, it can be quickly removed by the latches after opening the sealed box door 2, making maintenance convenient.

[0024] A blower 5 is fixedly installed on the top of the dust collection box 1. An air intake is provided on the upper left side of the dust collection box 1. The air intake of the blower 5 is fixedly connected to the air intake via an air pipe 6. The two ends of the air pipe 6 are bolted to the air intake flange of the blower 5 and the air intake flange, respectively. A double-gate automatic discharge valve 7 is fixedly installed in the middle of the air pipe 6.

[0025] A fine filter 14 is detachably installed on the inside of the air intake, which can effectively filter fine dust. A brush 13 is provided on one side of the fine filter 14. The length of the brush handle of the brush 13 is adapted to the fine filter 14, and the bristles are made of nylon.

[0026] A drive motor 11 is fixedly mounted on the upper right side of the dust collection box 1 via a bracket. The output shaft of the drive motor 11 is fixedly connected to the rotating shaft 12 via a coupling. One end of the rotating shaft 12 is connected to the output shaft coupling of the drive motor 11, and the other end extends through into the dust collection box 1 and is fixedly connected to the brush handle of the brush 13 via a key. A sealed bearing is installed on the side wall of the dust collection box 1 at the point where the rotating shaft 12 passes through to prevent dust from leaking out from the point where the rotating shaft 12 passes through. After the drive motor 11 is started, it drives the rotating shaft 12 to rotate at a constant speed, which in turn drives the brush 13 to rotate synchronously. The brush 13 gently brushes the surface of the fine filter screen 14, sweeping off the dust adhering to the surface of the filter material. The swept-off dust passes through the coarse filter screen 9 and falls into the collection bin 8.

[0027] A control box 15 is fixedly installed in the middle of the right side wall of the dust collection box 1. The control box 15 has a touch screen and an emergency stop button on its surface. The control box 15 houses a PLC controller, a solenoid reversing valve, a power module, and other components. The blower 5, the solenoid reversing valve of the double-gate automatic discharge valve 7, and the drive motor 11 are all electrically connected to the PLC controller in the control box 15 via wires. The touch screen can be used to set parameters such as the negative pressure value of the blower 5, the interval and opening time of the double-gate discharge valve, and the cleaning interval of the drive motor 11. It also displays the real-time operating status of the equipment, the negative pressure value inside the dust collection box 1, and the material level status of the collection bucket 8. The emergency stop button is connected in series in the main circuit; pressing it in an emergency will cut off the power to all equipment, ensuring safety.

[0028] Upon startup, clicking the "Start" button on the touchscreen triggers a command from the PLC controller inside control box 15, activating blower 5. Blower 5 draws air from dust collection box 1 through air pipe 6, creating a set negative pressure inside dust collection box 1. Dust generated by the light guide plate polishing machine is discharged from the dust outlet and, under negative pressure, passes through dustproof connector 4 into corrugated pipe 3. From there, it is transported to the suction port of dust collection box 1 and enters its interior.

[0029] Dust entering the dust collection box 1 first passes through the coarse filter 9. Large dust particles are intercepted below the coarse filter 9, some of which fall directly into the collection bucket 8, while the rest adhere to the coarse filter 9. The airflow containing fine dust after passing through the coarse filter continues to flow upward and reaches the fine filter 14 at the air intake. It is filtered and intercepted by the fine filter 14. The purified air enters the blower 5 through the air pipe 6 and is discharged from the air outlet of the blower 5, achieving standard emission.

[0030] The PLC controller controls the solenoid directional valve of the double-gate automatic discharge valve 7 to operate according to the set chip removal interval and opening time, driving the upper and lower cylinders to alternately extend and retract: the upper gate closes to cut off the air pipe 6 passage, and the lower gate opens to allow the dust swept off from the air pipe 6, coarse filter 9, and fine filter 14 to fall into the collection bucket 8; then the lower gate closes and the upper gate opens to restore the air pipe 6 passage, and so on to achieve uninterrupted chip removal, while ensuring the stable negative pressure of the dust collection box 1.

[0031] When the set cleaning interval is reached, the control box 15 automatically starts the drive motor 11. The drive motor 11 drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the brush 13 to rotate synchronously. The brush 13 gently brushes the surface of the fine filter screen 14, sweeping off the attached dust. The swept-off dust falls through the coarse filter screen 9 and into the collection bin 8.

[0032] When the collection bucket 8 is full, open the sealed door 2, pull out the collection bucket 8 for cleaning, push it back into the vacuum box 1 after cleaning, and close the sealed door 2.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automated dust collection box for the post-polishing stage of a light guide plate, comprising a dust collection box (1), characterized in that, The dust collection box (1) has a dust collection port on the upper left side. A corrugated pipe (3) is detachably connected to the outside of the dust collection port via a flange. The end of the corrugated pipe (3) is provided with a tapered dustproof connector (4). The front end of the dustproof connector (4) has an internal thread at the small diameter end and an external thread at the large diameter end. The front internal thread is screwed into the external thread of the dust outlet of the polishing machine, and the rear external thread is screwed into the quick connector of the corrugated pipe (3). The bottom of the dust collection box (1) is provided with a collection bucket (8). The collection bucket (8) is adapted to the internal size of the dust collection box (1). The four corners of the bottom of the collection bucket (8) are fixedly installed with casters (10).

2. The automated dust collection box for the post-polishing section of a light guide plate according to claim 1, characterized in that, The front end of the vacuum box (1) is open, and a sealed door (2) is hinged at the open end. The sealed door (2) is equipped with a push-button lock.

3. The automated dust collection box for the post-polishing section of a light guide plate according to claim 1, characterized in that, The dust collection box (1) is detachably installed above the collection bucket (8) with a coarse filter (9) installed at a height higher than the dust collection port.

4. The automated dust collection box for the post-polishing section of a light guide plate according to claim 1, characterized in that, A blower (5) is fixedly installed on the top of the dust collection box (1), and an air intake is provided on the upper left side of the dust collection box (1). An air pipe (6) is fixedly connected between the blower (5) and the air intake.

5. The automated dust collection box for the post-polishing section of a light guide plate according to claim 4, characterized in that, A double-gate automatic discharge valve (7) is fixedly installed on the air pipe (6).

6. The automated dust collection box for the post-polishing section of a light guide plate according to claim 5, characterized in that, A fine filter screen (14) is detachably installed on the inside of the air inlet, and a brush (13) is provided on one side of the fine filter screen (14).

7. The automated dust collection box for the post-polishing section of a light guide plate according to claim 6, characterized in that, The upper right side of the dust collection box (1) is fixedly mounted with a drive motor (11) by a bracket. The output shaft of the drive motor (11) is fixedly connected to a rotating shaft (12). One end of the rotating shaft (12) extends through into the dust collection box (1) and is fixedly connected to a brush (13).

8. The automated dust collection box for the post-polishing section of a light guide plate according to claim 7, characterized in that, The control box (15) is fixedly installed on the right side wall of the dust collection box (1). The blower (5), the double gate automatic discharge valve (7) and the drive motor (11) are all electrically connected to the control box (15).

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