Non-contact ultrasonic dust removal device and backlight module assembly equipment

Abstract

The utility model provides a non-contact ultrasonic dust removal device and backlight module assembly equipment, which comprise a shell, a first positive pressure cavity is arranged in the shell, a negative pressure cavity and a second positive pressure cavity are also arranged on the shell, and a resonant cavity, a second positive pressure port and a negative pressure port are respectively arranged at the bottom end of the shell; the negative pressure port is located on one side of the resonant cavity; the second positive pressure port is located on one side of the negative pressure port away from the resonant cavity; the first positive pressure cavity is communicated with the resonant cavity, the second positive pressure port is communicated with the second positive pressure cavity, and the negative pressure port is communicated with the negative pressure cavity; the first positive pressure cavity and the second positive pressure cavity are connected with a positive pressure generator, and the negative pressure cavity is connected with a negative pressure generator. The second positive pressure port is additionally arranged on the outer side of the negative pressure port, and the positive pressure provided by the second positive pressure port on the outer side counteracts the acting force of the negative pressure port, so that the negative pressure side of the product can be prevented from being sucked up and bent due to the combined action of positive pressure on one side and negative pressure on the other side, and the product can be protected while the dust removal capacity is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal technical field especially a non -contact ultrasonic dust removal device and backlight module assembly equipment. BACKGROUND

[0002] In the lithium electricity new energy industry, photoelectric semiconductor industry, microelectronic industry, medical industry, communication industry, micron and nanometer level dust in the technical field has very big restriction to the development of above -mentioned industry, dust can cause microelectronic signal short circuit, open circuit in each production process of product, can pollute clean environment, influence product quality.

[0003] Ordinary dust removal equipment only through the generation of negative pressure and take away dust, but 50um particle size below micro dust can form interface effect on the product surface, and ordinary dust removal equipment cannot effectively remove micro dust, therefore, an ultrasonic dust removal structure appears, which sets a positive pressure port to blow air to the product at the lower end of the shell, and negative pressure ports on both sides of the positive pressure port to suck dust, the positive pressure cavity evenly divides and bundles the positive pressure airflow, rapidly discharges the positive pressure airflow from the resonance cavity and oscillates on the product surface, destroys the viscous layer, and blows up the micro dust, simultaneously forms a siphon to quickly suck up the blown-up micro dust, avoids environmental fluid turbulence and serious dust diffusion, as shown in the patent document with the announcement number CN 218014568 U, for the backlight module assembly production line commonly used in the photoelectric semiconductor industry (usually the reflection paper sheet, backlight plate, light enhancement sheet, diffusion paper and the like are assembled together), it is necessary to avoid dust between the reflection paper sheet and light enhancement sheet, and the above dust removal structure is used for dust removal, but since the above dust removal structure blows air in the middle and sucks air on both sides, it is likely to suck up both sides of the product during dust removal, resulting in bending of the reflection paper sheet, backlight plate, light enhancement sheet and diffusion paper, and causing defects of the assembled backlight module. CONTENT OF THE UTILITY MODEL

[0004] To solve the above problems, the utility model aims at providing a non -contact ultrasonic dust removal device and backlight module assembly equipment.

[0005] The utility model discloses adopt following method to realize: a non -contact ultrasonic dust removal device, including the shell, be equipped with first positive pressure chamber in the shell, still be equipped with negative pressure chamber and second positive pressure chamber on the shell, the bottom of shell is opened with resonance cavity, second positive pressure port and negative pressure port respectively, the negative pressure port is located one side of resonance cavity The second positive pressure port is located one side of negative pressure port away from resonance cavity, first positive pressure chamber with resonance cavity is communicated, second positive pressure port with second positive pressure chamber is communicated, negative pressure port with negative pressure chamber is communicated, first positive pressure chamber with second positive pressure chamber is connected with positive pressure generator, and negative pressure chamber is connected with negative pressure generator.

[0006] Preferably, the negative pressure port is provided with two, symmetrically arranged on both sides of the resonance cavity.

[0007] Preferably, the second positive pressure port is provided with two, respectively arranged on the bottom of the shell on the side away from the resonance cavity of the two negative pressure ports.

[0008] Preferably, the bottom of the shell is provided with a dust removal groove, the resonance cavity is arranged at the central axis of the dust removal groove, the negative pressure port is arranged in the dust removal groove, and the two resonance cavities are respectively arranged at the bottom of the shell on the two sides of the dust removal groove.

[0009] Preferably, the negative pressure port is annular, surrounds the resonance cavity, and the second positive pressure port is annular, surrounds the negative pressure port.

[0010] Preferably, the pressure of the second positive pressure port is less than the pressure of the resonance cavity.

[0011] Preferably, the shell is mounted on a lifting assembly for adjusting the distance between the resonance cavity, the second positive pressure port, the negative pressure port and the product.

[0012] Preferably, the lifting assembly comprises a base, a longitudinal adjusting screw is mounted on the base, guide rails are mounted on the two sides of the adjusting screw, a nut is provided on the adjusting screw, a sliding block is mounted on the guide rail, the sliding block is fixedly connected with the nut, and the side surface of the shell is fixedly connected with the sliding block.

[0013] Preferably, the shell is connected with a negative pressure suction pipe and a positive pressure blowing pipe, the two ends of the negative pressure suction pipe are connected with the negative pressure chamber and the negative pressure generator respectively, and the positive pressure blowing pipe is connected with the positive pressure generator, the first positive pressure chamber and the second positive pressure chamber.

[0014] A backlight module assembly device is provided with the non-contact ultrasonic dust removal device, which is used for dust removal of the backlight module before film pasting.

[0015] The utility model has the advantages that:

[0016] The utility model provides a kind of non-contact ultrasonic dust removal device, compared with prior art, the utility model at least has following technical effects:1. Two second positive pressure ports are arranged on the outside of the two negative pressure ports, which ensures that the dust on the surface of the product is blown off by positive pressure and sucked away by negative pressure, while limiting the product to its original position to prevent it from being sucked up by the negative pressure port.3. The dust removal groove is arranged at the bottom end of the shell, the negative pressure port and the resonance cavity, which blows the dust on the surface of the product when the resonance cavity blows air, and forms a negative pressure on both sides of the airflow (Bernoulli's principle), so that the dust is carried by the airflow to the negative pressure area on both sides, and then sucked away by the negative pressure port on both sides. The dust removal groove can contain floating dust to prevent dust from spilling out, making the device have better dust removal effect.4. The shell is installed on the lifting assembly, which can adjust the distance between the resonance cavity, the second positive pressure port, the negative pressure port and the surface of the product, adapt to dust removal of various products and operation of workbenches of different heights, and ensure that the device is at the best dust removal distance to avoid spilling of some dust in the dust removal area during dust removal.

[0017] The utility model provides a kind of backlight module assembly equipment, compared with prior art, the utility model at least has following technical effects:1. The two second positive pressure ports arranged on the outside of the dust removal device provide a force in the opposite direction of the negative pressure port, which can effectively prevent the components of the backlight module from being sucked up and bent during dust removal, and has better dust removal effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Is the three-dimensional structure schematic diagram of the utility model a kind of non-contact ultrasonic dust removal device.

[0019] Figure 2 Is the section view of the utility model a kind of non-contact ultrasonic dust removal device.

[0020] Figure 3 Is the structure schematic diagram of the utility model a kind of backlight module assembly equipment.

[0021] Explanation of reference numerals: 1, housing; 2, first positive pressure cavity; 3, negative pressure cavity; 4, second positive pressure cavity; 5, resonance cavity; 6, second positive pressure port; 7, negative pressure port; 8, dust removal groove; 9, lifting assembly; 10, negative pressure suction pipe; 11, positive pressure blowing pipe; 12, backlight module assembly equipment; 13, backlight module. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings and specific embodiments.

[0023] Please refer to Figures 1 to 2 A non-contact ultrasonic dust removal device, comprising a housing 1, the housing 1 is provided with a first positive pressure cavity 2, the housing 1 is also provided with a negative pressure cavity 3 and a second positive pressure cavity 4, the bottom end of the housing 1 is respectively provided with a resonance cavity 5, a second positive pressure port 6 and a negative pressure port 7; the negative pressure port 7 is located on one side of the resonance cavity 5, and the second positive pressure port 6 is located on the side of the negative pressure port 7 away from the resonance cavity 5; the first positive pressure cavity 2 is in communication with the resonance cavity 5, the second positive pressure port 6 is in communication with the second positive pressure cavity 4, and the negative pressure port 7 is in communication with the negative pressure cavity 3; the first positive pressure cavity 2 and the second positive pressure cavity 4 are connected with a positive pressure generator (not shown), and the negative pressure cavity 3 is connected with a negative pressure generator (not shown). By increasing the second positive pressure port 6 outside the negative pressure port 7 on the device, when the negative pressure port 7 is dusted, the product surface is blown by the resonance cavity 5 and the second positive pressure port 6 on both sides of the negative pressure port 7, and the positive pressure provided by the second positive pressure port 6 on the outside can offset the force of the negative pressure port 7, so that the product is prevented from being bent on the side of the negative pressure caused by the combined action of the positive pressure on one side and the negative pressure on the other side, the dust removal capacity is ensured, and the product is also protected. When the airflow passes through the resonance cavity 5 provided with an ultrasonic resonator, the outgoing airflow becomes a positive pressure ultrasonic oscillation airflow, which can more effectively destroy the adhesion effect on the surface of the product and blow up the fine dust, for details, please refer to the contents of CN 218014568 U.

[0024] Please refer to Figures 1 to 2 Preferably, the negative pressure port 7 is provided with two, which are symmetrically arranged on both sides of the resonance cavity 5. The second positive pressure port 6 is provided with two, which are respectively arranged on the bottom end of the housing 1 away from the resonance cavity 5 on the side of the two negative pressure ports 7. The negative pressure port 7 is arranged on both sides of the resonance cavity 5, and the two second positive pressure ports 6 are respectively located outside the two negative pressure ports 7, so as to ensure that the dust on the surface of the product is blown up by the positive pressure and sucked away by the negative pressure port 7, and at the same time, the product can be limited to the original position, preventing the product from being sucked up by the negative pressure port 7 (the middle is the resonance cavity 5 blowing gas to limit to the original position, and the two sides are the negative pressure port 7 suction, which will make the product bend from the position below the resonance cavity 5).

[0025] Please refer to Figures 1 to 2, preferably, the bottom end of the shell 1 is provided with a dust removal groove 8, the resonant cavity 5 is arranged at the central axis of the dust removal groove 8, the negative pressure port 7 is arranged in the dust removal groove 8, and the two resonant cavities 5 are respectively located at the bottom end of the shell 1 outside the dust removal groove 8. When the resonant cavity 5 blows, the dust on the surface of the product is blown up, and a negative pressure (Bernoulli principle) is formed on both sides of the airflow blown out of the resonant cavity 5, so that the dust is carried by the airflow to the negative pressure area on both sides, and then sucked away by the negative pressure port 7 on both sides. Because of the existence of the dust removal groove 8, the distance between the resonant cavity 5 and the negative pressure port 7 and the product surface is farther, the dust removal groove 8 can play a role in containing the floating dust, and the bottom end of the shell 1 is closer to the product at the second positive pressure port 6, so that the airflow blown out of the resonant cavity 5 is more difficult to overflow from there, and the blowing of the second positive pressure port 6 prevents the dust from overflowing, so that the device has better dust removal effect.

[0026] Please refer to Figures 1 to 2 , preferably, the negative pressure port 7 is annular and arranged around the resonant cavity 5, and the second positive pressure port 6 is annular and arranged around the negative pressure port 7. The second positive pressure port 6 is arranged outside the resonant cavity 5 to prevent the product outside from being sucked up.

[0027] Please refer to Figures 1 to 2 , preferably, the pressure of the second positive pressure port 6 is less than the pressure of the resonant cavity 5. As long as it can prevent the product from being sucked up, it does not need to blow the dust on the surface of the product. The pressure of the two positive pressure cavities can be adjusted by a valve on the positive pressure blowing pipe 11 connecting the first positive pressure cavity 2 and the second positive pressure cavity 4

[0028] Please refer to Figures 1 to 2 , preferably, the shell 1 is installed on the lifting assembly 9, which is used to adjust the distance between the resonant cavity 5, the second positive pressure port 6, the negative pressure port 7 and the product. The distance between the resonant cavity 5, the second positive pressure port 6 and the negative pressure port 7 and the product surface can be adjusted, which can adapt to the dust removal of various products and the operation of workbenches of different heights, and ensure that the device is in the best dust removal distance to avoid the overflow of part of the dust in the dust removal area during the dust removal process.

[0029] Please refer to Figures 1 to 2 , preferably, the lifting assembly 9 comprises a base, a longitudinal adjusting screw is installed on the base, guide rails are installed on both sides of the adjusting screw, a nut is arranged on the adjusting screw, a sliding block is installed on the guide rail, and the sliding block is fixedly connected with the nut. The side surface of the shell 1 is fixedly connected with the sliding block. By rotating the adjusting screw, the sliding block can be moved up and down, that is, the shell 1 can be moved up and down, so as to adjust the distance between the resonant cavity 5, the second positive pressure port 6 and the negative pressure port 7 and the product surface. The adjusting screw can be manually driven or motor driven, and is not limited thereto.

[0030] Please refer to Figures 1 to 2 Preferably, the shell 1 is connected with a negative pressure air suction pipe 10 and a positive pressure air blowing pipe 11, two ends of the negative pressure air suction pipe 10 are connected with the negative pressure cavity 3 and the negative pressure generator respectively; the positive pressure air blowing pipe 11 is connected with the positive pressure generator and the first positive pressure cavity 2 and the second positive pressure cavity 4. Preferably, the negative pressure generator and the positive pressure generator are an integrated machine, which generates negative pressure and positive pressure, and is helpful to the recycling of gas. Alternatively, the negative pressure generator is a vacuum generator, and the positive pressure generator is an air compressor.

[0031] Preferably, the ultrasonic resonator is installed in the resonant cavity 5. When the airflow passes through the resonant cavity generated by the ultrasonic resonator, the outgoing airflow becomes a positive pressure ultrasonic oscillation airflow, which can more effectively destroy the adhesion layer on the surface of the product and lift up the fine dust.

[0032] Please refer to Figure 3 A backlight module assembly equipment 12 is provided with the non-contact ultrasonic dust removal device, which is used for removing dust from the backlight module 13 before the film is attached. By removing dust from the components of the backlight module 13 through the dust removal device, the bending components are prevented from being lifted up during the dust removal process, which helps to improve the overall yield of the product and improve the production efficiency.

[0033] The utility model has the following working principle:

[0034] When dust removal is needed, the shell 1 is moved up and down by rotating the adjusting screw of the lifting assembly 9 to keep a proper distance between the shell 1 and the product to be dusted; then, high-pressure air is introduced into the first positive pressure cavity 2 and the second positive pressure cavity 4 through the air compressor, the resonant cavity 5 and the second positive pressure port 6 blow air respectively, at the same time, the vacuum generator works to provide negative pressure to the negative pressure cavity 3, so that the negative pressure port 7 has suction force; when the resonant cavity 5 blows air, the dust on the surface of the product is blown up, and negative pressure is formed on both sides of the airflow blown out of the resonant cavity 5 (Bernoulli principle), so that the dust is carried by the airflow to the negative pressure area on both sides, and then sucked away by the negative pressure port 7 on both sides; at this time, the second negative pressure port 7 continuously blows air to the surface of the product to prevent the negative pressure port 7 from lifting up the curved product on both sides of the resonant cavity 5; while ensuring the dust removal effect, the product is prevented from being lifted up and bent, which can effectively improve the yield of product production.

[0035] It should be pointed out that, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure with the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0037] Finally, the above is only the preferred embodiment of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, and all technical schemes under the idea of the utility model belong to the protection scope of the utility model.

[0038] It should be pointed out that for ordinary skilled person in the art, under the premise of not departing from the principle of the utility model, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the utility model.

Claims

1. A non-contact ultrasonic dust removal device, comprising a housing, characterized in that: A first positive pressure cavity is provided in the shell, and a negative pressure cavity and a second positive pressure cavity are also provided on the shell. A resonance cavity, a second positive pressure port and a negative pressure port are respectively provided at the bottom end of the shell; the negative pressure port is located on one side of the resonance cavity and the second positive pressure port is located on the side of the negative pressure port away from the resonance cavity; the first positive pressure cavity is communicated with the resonance cavity, the second positive pressure port is communicated with the second positive pressure cavity, and the negative pressure port is communicated with the negative pressure cavity; the first positive pressure cavity and the second positive pressure cavity are connected to a positive pressure generator, and the negative pressure cavity is connected to a negative pressure generator.

2. The non-contact ultrasonic dust removal device according to claim 1, characterized in that: There are two negative pressure ports, which are symmetrically arranged on both sides of the resonant cavity.

3. The non-contact ultrasonic dust removal device according to claim 2, characterized in that: There are two second positive pressure ports, which are respectively arranged on the bottom ends of the shell on the sides of the two negative pressure ports away from the resonant cavity.

4. The non-contact ultrasonic dust removal device according to claim 3, characterized in that: A dust removal groove is provided at the bottom end of the shell, the resonance cavity is provided at the central axis of the dust removal groove, the negative pressure port is provided in the dust removal groove, and the two resonance cavities are respectively located at the bottom end of the shell on both sides outside the dust removal groove.

5. The non-contact ultrasonic dust removal device according to claim 1, characterized in that: The negative pressure port is annular and arranged around the resonant cavity, and the second positive pressure port is annular and arranged around the negative pressure port.

6. The non-contact ultrasonic dust removal device according to claim 1, characterized in that: The pressure of the second positive pressure port is lower than the pressure of the resonant cavity.

7. The non-contact ultrasonic dust removal device according to claim 1, characterized in that: The housing is mounted on the lifting assembly and is used to adjust the distance between the resonant cavity, the second positive pressure port, the negative pressure port and the product.

8. The non-contact ultrasonic dust removal device according to claim 7, characterized in that: The lifting assembly includes a base, a longitudinal adjusting screw is installed on the base, guide rails are installed on both sides of the adjusting screw, a nut is passed through the adjusting screw, a slider is installed on the guide rail, the slider is fixedly connected to the nut, and the side of the shell is fixedly connected to the slider.

9. The non-contact ultrasonic dust removal device according to claim 1, characterized in that: A negative pressure suction pipe and a positive pressure blowing pipe are connected to the shell, and the two ends of the negative pressure suction pipe are respectively connected to the negative pressure chamber and the negative pressure generator; the positive pressure blowing pipe is connected to the positive pressure generator and the first positive pressure chamber and the second positive pressure chamber.

10. A backlight module assembly device, characterized in that: A non-contact ultrasonic dust removal device as described in any one of claims 1 to 9 is provided for removing dust from a backlight module before film application.

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