PCB (Printed Circuit Board) conformal coating spraying machine capable of conveniently adjusting spraying thickness

Abstract

The invention relates to the related technical field of PCB three-proofing paint spraying machines, in particular to a PCB three-proofing paint spraying machine convenient to adjust the spraying thickness, which comprises a support frame, a spraying frame, a spraying gun and a spraying assembly, the spraying frame is movably mounted in the middle of the support frame, the spraying gun is arranged at the bottom end of the spraying frame, and the spraying assembly is arranged at the bottom end of the spraying frame. A spraying frame and a spraying gun are arranged at the movable position of the spraying assembly, and the uniform spraying assembly is installed on the spraying gun; according to the PCB three-proofing paint spraying machine, the uniform guns are distributed and installed at the bottom end of the built-in spray head frame, the situation that a single three-proofing paint spraying head is adopted in the PCB three-proofing paint spraying machine, the uniform guns and the built-in spray head frame are distributed and sprayed at the same time, three-proofing paint spraying is carried out on the whole PCB, one-time spraying can be carried out on the PCB, and the spraying efficiency is improved. Repeated spraying in the reciprocating spraying process of a single conformal coating spraying head is avoided, and a conformal coating spraying layer of the PCB is prevented from being too thick.

Description

Technical Field

[0001] The invention relates to the technical field related to a PCB board conformal coating sprayer, and in particular to a PCB board conformal coating sprayer which is convenient for adjusting the coating thickness. Background Art

[0002] Conformal coating is one of the most important measures. Circuit boards coated with conformal coating have the properties of waterproof, moisture-proof and dust-proof, as well as resistance to cold and heat shock, aging, radiation, salt spray, ozone corrosion, vibration, good flexibility and strong adhesion. It can effectively extend the service life of circuit boards and improve the stability of electronic equipment. After loading, the three-axis spraying robot can preset the spraying trajectory and spraying time, which is particularly suitable for small-scale production of small electronic products. The conformal coating has good consistency and stable quality. For conformal coatings with certain hazards, a shell and a curing device can be added to achieve all-round protection.

[0003] The existing PCB board conformal coating spraying machine uses a single conformal coating spraying head, which makes it difficult to spray the PCB board in one go. During the reciprocating spraying process of the single conformal coating spraying head, repeated spraying is easy to cause the conformal coating spray layer of the PCB board to be too thick. Summary of the invention

[0004] The object of the present invention is to provide a PCB board conformal coating spraying machine which is convenient for adjusting the coating thickness, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A PCB board three-proof paint spraying machine which is convenient for adjusting the spraying thickness, comprises a support frame, a spraying frame, a spraying gun and a spraying assembly, wherein the spraying frame is movably installed in the middle of the support frame, the spraying gun is arranged at the bottom of the spraying frame, the spraying frame and the spraying gun are arranged at the movable part of the spraying assembly, and also comprises,

[0007] A uniform spraying assembly is mounted on the spraying gun;

[0008] A spray thickness component is arranged on the spray gun;

[0009] Among them, a built-in nozzle rack is installed at the front end of the spray gun, an operation panel is arranged on one side of the support frame, a PCB board rack is arranged at the bottom end of the built-in nozzle rack, a spray scraper rack is installed at the front end of the PCB board rack, lifting rods are arranged on both sides of the spray scraper rack, a hydraulic cylinder is installed at the lifting position of the lifting rod, and a pneumatic rack is arranged at the bottom end of the PCB board rack.

[0010] The PCB board conformal coating spraying machine that is easy to adjust the spraying thickness as described above: the spray gun is movably installed on the top of the PCB board frame through a built-in spray head frame.

[0011] The PCB board conformal coating spraying machine that is easy to adjust the spraying thickness as described above: the PCB board frame is driven by the air pressure of the pneumatic frame to slide at the bottom end of the spray scraper frame.

[0012] The PCB board conformal coating sprayer that is easy to adjust the spraying thickness as described above: the uniform spraying component includes a PCB board carrier plate fixedly installed on both sides of the PCB board frame, and a track frame is fixed at the sliding part of the PCB board frame.

[0013] The PCB board triple-conformal paint sprayer that is easy to adjust the spray thickness as described above: the uniform spraying component also includes a fixing plate threadedly connected to the bottom end of the built-in spray head frame, and the bottom end of the fixing plate is threadedly connected to a uniform spray gun.

[0014] The PCB board conformal coating sprayer that is easy to adjust the spraying thickness as described above: the spraying thickness component includes an internal spring fixedly connected to the inside of the PCB board frame, and a pressing plate is movably installed on the top of the internal spring.

[0015] The PCB conformal coating spraying machine that is easy to adjust the spraying thickness as described above: the pressing plate is elastically supported on the PCB board frame by a built-in spring.

[0016] The PCB board three-proof paint spraying machine that is easy to adjust the spraying thickness as described above: the spraying thickness component also includes a clamping plate threadedly connected to the spraying scraper frame, and a scraper is installed at the bottom end of the clamping plate.

[0017] The PCB board three-proof paint spraying machine that is easy to adjust the spraying thickness as mentioned above: its operation steps are as follows: the PCB board is loaded onto the PCB board rack, the built-in nozzle rack and the spray gun are sprayed at the same time, the uniform gun is distributed and installed at the bottom of the built-in nozzle rack, the uniform gun and the built-in nozzle rack perform multiple distributions and spraying at the same time, the PCB board is sprayed with three-proof paint as a whole, and the PCB board is sprayed once. The coating scraper rack is hydraulically driven to rise and fall by the lifting rod and the hydraulic cylinder. The scraper and the clamping plate on the spray scraper rack can go down to the surface of the PCB board. The user manually operates the operation panel of the PCB board three-proof paint sprayer to spray the PCB board with three-proof paint, and then the PCB board is placed on the PCB board rack, and the three-proof paint is sprayed on the PCB board rack by the spray rack and the spray gun. The lifting rod and the hydraulic cylinder are movably installed on both sides of the PCB board rack. The PCB board rack is driven by the pneumatic rack air pressure. When sliding, the PCB board on the PCB board rack can slide in contact with the bottom of the spray scraper rack to adjust the spray scraping layer.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the uniform gun is distributed and installed at the bottom of the built-in nozzle rack, the PCB board three-proof paint spraying machine uses a single three-proof paint spraying head, the uniform gun and the built-in nozzle rack perform multiple distributions and spraying at the same time, the PCB board is sprayed with three-proof paint as a whole, the PCB board can be sprayed at one time, and repeated spraying during the reciprocating spraying process of a single three-proof paint spraying head is avoided, so as to prevent the three-proof paint spray layer of the PCB board from being too thick.

[0019] The spray scraper is hydraulically driven to rise and fall by the lifting rod and hydraulic cylinder. The scraper and clamping plate on the spray scraper can go down to the surface of the PCB board. When the three-proof paint on the surface of the PCB board is sprayed too thickly, the scraper and clamping plate are lifted to the surface of the PCB board for uniform scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the uniform spraying assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the built-in nozzle rack of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the PCB board frame of the present invention;

[0024] Figure 5 For the present invention Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0025] In the figure: 1. Support frame; 2. Spraying frame; 3. Spray gun; 4. Built-in nozzle frame; 5. Operation panel; 6. PCB board frame; 7. Lifting rod; 8. Hydraulic cylinder; 9. Pneumatic frame; 10. Spray scraper frame; 11. Track frame; 12. PCB board bearing plate; 13. Fixed plate; 14. Even gun; 15. Pressing plate; 16. Built-in spring; 17. Clamping plate; 18. Scraper. DETAILED DESCRIPTION

[0026] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0027] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0028] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0029] See also Figures 1 to 5 A PCB conformal coating spraying machine which is convenient for adjusting the coating thickness is proposed, comprising a support frame 1, a coating frame 2, a coating gun 3 and a coating assembly.

[0030] A spraying frame 2 is movably installed in the middle of the support frame 1, and a spraying gun 3 is arranged at the bottom of the spraying frame 2. The spraying frame 2 and the spraying gun 3 are arranged at the movable part of the spraying assembly. The uniform spraying assembly is installed on the spraying gun 3; the spraying thickness assembly is arranged on the spraying gun 3;

[0031] Starting the conformal coating spraying machine for PCB board can drive the spraying frame 2 and the spraying gun 3 on the support frame 1 to spray the conformal coating. The spraying frame 2 and the spraying gun 3 can spray the conformal coating on the PCB board;

[0032] Among them, a built-in nozzle rack 4 is installed at the front end of the spray gun 3, an operation panel 5 is arranged on one side of the support frame 1, a PCB board rack 6 is arranged at the bottom end of the built-in nozzle rack 4, a spray scraper rack 10 is installed at the front end of the PCB board rack 6, and lifting rods 7 are arranged on both sides of the spray scraper rack 10. A hydraulic cylinder 8 is installed at the lifting position of the lifting rod 7, and a pneumatic rack 9 is arranged at the bottom end of the PCB board rack 6.

[0033] In this embodiment, the built-in nozzle rack 4 is movably mounted at the front end of the spray gun 3. After the operation panel 5 is mounted on the support frame 1, the user can manually operate the operation panel 5 of the PCB board conformal coating sprayer to spray the PCB board with conformal coating, and then place the PCB board on the PCB board rack 6. The conformal coating can be sprayed on the PCB board rack 6 through the spray rack 2 and the spray gun 3, so that the lifting rod 7 and the hydraulic cylinder 8 are movably mounted on both sides of the PCB board rack 6, and the PCB board rack 6 is driven by the pneumatic frame 9 to slide.

[0034] Preferably, the spray gun 3 is movably mounted on the top of the PCB board frame 6 through the built-in nozzle rack 4. The built-in nozzle rack 4 and the spray gun 3 are driven by the PCB board triple-proof paint sprayer to spray. When the PCB board is loaded onto the PCB board frame 6, the built-in nozzle rack 4 and the spray gun 3 can spray at the same time.

[0035] Preferably, the PCB board rack 6 is driven by the pneumatic frame 9 to slide at the bottom of the spray scraper 10, and the lifting rod 7 and the hydraulic cylinder 8 are movably installed on both sides of the PCB board rack 6. The PCB board rack 6 is driven by the pneumatic frame 9. When sliding, the PCB board on the PCB board rack 6 can slide in contact with the bottom of the spray scraper 10 to adjust the spray scraping layer.

[0036] Please refer to Figure 2 and Figure 3 In this embodiment, the uniform spraying assembly includes a PCB board carrier plate 12 fixedly mounted on both sides of the PCB board frame 6, and a track frame 11 is fixed at a sliding position on the PCB board frame 6.

[0037] The PCB board carrier plate 12 is fixedly connected to both sides of the PCB board frame 6. The PCB board frame 6 is driven by the pneumatic frame 9. When sliding, the PCB board carrier plate 12 and the track frame 11 on the PCB board frame 6 are movably installed on the PCB board three-proof paint spraying machine for sliding adjustment.

[0038] Please refer to Figure 2 and Figure 3 In this embodiment, the uniform spraying assembly further includes a fixing plate 13 threadedly connected to the bottom end of the built-in spray head frame 4, and a uniform spraying gun 14 is threadedly connected to the bottom end of the fixing plate 13.

[0039] The fixing plate 13 is threadedly connected and fixedly installed at the bottom of the built-in nozzle rack 4, so that the uniform gun 14 is movably installed on the fixing plate 13, the PCB board is fed onto the PCB board rack 6, the built-in nozzle rack 4 and the spray gun 3 can be sprayed at the same time, and the uniform gun 14 is distributed and installed at the bottom of the built-in nozzle rack 4, and the PCB board three-proof paint spraying machine is changed to use a single three-proof paint spraying head. The uniform gun 14 and the built-in nozzle rack 4 are sprayed in multiple distributions at the same time, and the PCB board is sprayed with three-proof paint as a whole. The PCB board can be sprayed at one time, avoiding repeated spraying during the reciprocating spraying process of a single three-proof paint spraying head, and preventing the three-proof paint spray layer of the PCB board from being too thick.

[0040] Please refer to Figure 4 and Figure 5 In this embodiment, the spray thickness component includes an internal spring 16 fixedly connected to the inside of the PCB board frame 6, and a pressing plate 15 is movably installed on the top of the internal spring 16.

[0041] The built-in spring 16 is distributed and fixedly connected inside the PCB board frame 6, so that the pressing plate 15 is movably installed on the top of the built-in spring 16. When the PCB board is fed to the outside of the PCB board frame 6, the uniform gun 14 and the built-in nozzle frame 4 are used for three-proof paint spraying.

[0042] Preferably, the pressing plate 15 is elastically supported on the PCB board frame 6 by the built-in spring 16, and the PCB board on the PCB board frame 6 can slide against the bottom end of the spray scraper 10. When adjusting the spray scraping layer, the PCB board can be elastically squeezed on the built-in spring 16 and the pressing plate 15. The PCB board elastically moves down according to the lifting height of the spray scraper 10, the lifting rod 7 and the hydraulic cylinder 8, which is convenient for adjusting the spray thickness of the PCB board scraping layer.

[0043] Please refer to Figure 4 and Figure 5 In this embodiment, the spray thickness assembly also includes a clamping plate 17 threadedly connected to the spray scraper frame 10, and a scraper 18 is installed at the bottom end of the clamping plate 17.

[0044] The scraper 18 is threadedly connected to the spray scraper frame 10 through the clamping plate 17. The spray scraper frame 10 is hydraulically driven to rise and fall by the lifting rod 7 and the hydraulic cylinder 8. The scraper 18 and the clamping plate 17 on the spray scraper frame 10 can go down to the surface of the PCB board. When the three-proof paint on the surface of the PCB board is sprayed too thickly, the scraper 18 and the clamping plate 17 are lifted and lowered to the surface of the PCB board for uniform scraping.

[0045] As can be seen from the above, the PCB board is loaded onto the PCB board rack 6, the built-in nozzle rack 4 and the spray gun 3 can be sprayed at the same time, the uniform gun 14 is distributed and installed at the bottom of the built-in nozzle rack 4, the PCB board three-proof paint spraying machine is changed to use a single three-proof paint spraying head, the uniform gun 14 and the built-in nozzle rack 4 are sprayed in multiple distributions at the same time, the PCB board is sprayed with three-proof paint as a whole, and the PCB board can be sprayed at one time. The coating scraper rack 10 is hydraulically driven to rise and fall by the lifting rod 7 and the hydraulic cylinder 8, and the scraper 18 and the clamping plate 17 on the spray scraper rack 10 can go deep to the surface of the PCB board.

[0046] The user can manually operate the operation panel 5 of the PCB board conformal coating sprayer to spray the PCB board with conformal coating, and then place the PCB board on the PCB board rack 6. The conformal coating can be sprayed on the PCB board rack 6 through the spray rack 2 and the spray gun 3. The lifting rod 7 and the hydraulic cylinder 8 are movably installed on both sides of the PCB board rack 6. The PCB board rack 6 is driven by the pneumatic frame 9. When sliding, the PCB board on the PCB board rack 6 can slide in contact with the bottom end of the spray scraper frame 10 to adjust the spray scraping layer.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PCB board conformal coating spraying machine that is convenient for adjusting the coating thickness, comprising a support frame (1), a spray frame (2), a spray gun (3) and a spray assembly, wherein the support frame (1) is movably mounted with the spray frame (2) in the middle, the spray frame (2) is provided with the spray gun (3) at the bottom end, and the spray frame (2) and the spray gun (3) are provided at a movable part on the spray assembly, characterized in that: It also includes the following: A uniform spraying assembly, mounted on the spraying gun (3); A spray thickness component, arranged on the spray gun (3); The front end of the spray gun (3) is equipped with a built-in spray head frame (4), one side of the support frame (1) is equipped with an operation panel (5), the bottom end of the built-in spray head frame (4) is equipped with a PCB board frame (6), the front end of the PCB board frame (6) is equipped with a spray scraper frame (10), lifting rods (7) are arranged on both sides of the spray scraper frame (10), the lifting position on the lifting rod (7) is equipped with a hydraulic cylinder (8), and the bottom end of the PCB board frame (6) is equipped with a pneumatic frame (9).

2. The PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 1 is characterized in that: The spray gun (3) is movably mounted on the top of the PCB board frame (6) via a built-in spray head frame (4).

3. The PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 2 is characterized in that: The PCB board frame (6) is driven by the air pressure of the pneumatic frame (9) to slide at the bottom end of the spray scraper frame (10).

4. The PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 3 is characterized in that: The uniform spraying assembly comprises a PCB board bearing plate (12) fixedly mounted on both sides of a PCB board frame (6), and a track frame (11) is fixed at a sliding position on the PCB board frame (6).

5. The PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 4 is characterized in that: The uniform spraying assembly further comprises a fixing plate (13) threadedly connected to the bottom end of the built-in spray head frame (4), and a uniform spraying gun (14) is threadedly connected to the bottom end of the fixing plate (13).

6. The PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 5, characterized in that: The spray thickness component comprises an internal spring (16) fixedly connected to the inside of the PCB frame (6), and a pressing plate (15) is movably mounted on the top of the internal spring (16).

7. A PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 6, characterized in that: The pressing plate (15) is elastically supported on the PCB board frame (6) via a built-in spring (16).

8. The PCB conformal coating spraying machine that is easy to adjust the coating thickness according to claim 6, characterized in that: The spray thickness assembly also includes a clamping plate (17) threadedly connected to the spray scraper (10).

9. The PCB conformal coating spraying machine that is convenient for adjusting the coating thickness according to claim 7, characterized in that: A scraper (18) is installed at the bottom end of the clamping plate (17).

10. The PCB conformal coating spraying machine that is convenient for adjusting the coating thickness according to claim 9, characterized in that: The operation steps are as follows: a PCB board is loaded onto a PCB board rack (6), a built-in spray head rack (4) and a spray gun (3) are sprayed simultaneously, a uniform gun (14) is distributed and installed at the bottom of the built-in spray head rack (4), the uniform gun (14) and the built-in spray head rack (4) perform multiple distributed spraying simultaneously, the PCB board is sprayed with three-proof paint as a whole, and the PCB board is sprayed once, the coating scraper rack (10) is hydraulically driven to rise and fall through a lifting rod (7) and a hydraulic cylinder (8), and the scraper (18) and the clamping plate (17) on the spray scraper rack (10) can be moved down to the surface of the PCB board. The user manually operates the operation panel (5) of the PCB board conformal coating sprayer to spray the PCB board with conformal coating, and then places the PCB board on the PCB board rack (6). The conformal coating is sprayed on the PCB board rack (6) by the spray rack (2) and the spray gun (3). The lifting rod (7) and the hydraulic cylinder (8) are movably installed on both sides of the PCB board rack (6). The PCB board rack (6) is driven by the air pressure of the pneumatic rack (9). When sliding, the PCB board on the PCB board rack (6) can slide in contact with the bottom end of the spray scraper rack (10) to adjust the spray scraping layer.

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