Circuit board spraying device

Abstract

The utility model discloses a circuit board spraying device, and aims to solve the technical problem that the spraying protection cost of a circuit board is increased due to the fact that an existing paint spraying prevention protection structure is a single-time non-recyclable use structure. Comprising a conveying frame, a transmission module and a double-shaft spraying mechanism are installed on the surface of the conveying frame, an annular conveying belt is in transmission connection with the circumferential side face of the transmission module, a protection box is fixedly installed in the middle of the conveying frame through a set of lifting push rods, a water storage cavity is fixedly formed in the protection box, and a guide module is installed in the protection box; the circumferential side face of the guide module is in transmission connection with an annular protection film, and two symmetrically-arranged paint penetrating areas are arranged on the surface of the annular protection film. According to the utility model, through the arrangement of the annular protective film, the moving guide film group, the varnish assembly and the electric heating plate, a single-use non-circulating structure of a blowout prevention protection structure in a traditional circuit board spraying device is changed into a circulating protection structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board spraying, and specifically relates to a circuit board spraying device. Background Art

[0002] Circuit boards need to be painted during the processing. The existing method of painting circuit boards is to place the circuit boards on a work platform and then use a spraying device to paint the circuit boards. However, this spraying method will spray paint onto locations on the circuit boards where electrical components are installed and where no spraying is required, as well as onto the work platform, which is inconvenient to clean.

[0003] In the prior art, a patent document with publication number CN218308657U discloses a leak-proof circuit board surface spraying device. In the device, after the circuit board is sprayed with paint, the second motor is turned on, and the driving shaft drives the winding roller to rotate, and the winding roller winds up the receiving cloth sprayed with paint. When the clean receiving cloth is above the workbench, the second motor is turned off, and then the next group of circuit boards are placed on the workbench, and then the above operation is repeated to spray the circuit boards. Excess paint will be sprayed on the receiving cloth. By setting this equipment, it is possible to prevent paint from being sprayed on the positions of the circuit board where electrical components are installed and the workbench where spraying is not required. However, in the above technical scheme, the paint spray-proof protection structure is a single-time non-recyclable structure. Due to the limitation of the above structure, the protection cost of the circuit board during spraying will inevitably increase. Based on this, the utility model provides a circuit board spraying device to solve the problems raised in the above background technology. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a circuit board spraying device, aiming to solve the technical problem that the existing paint spray protection structure is a single non-recyclable structure, which increases the cost of spray protection of circuit boards.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a circuit board spraying device, including a conveying frame, on the surface of which a transmission module and a double-axis spraying mechanism are respectively installed, the peripheral side of the transmission module is connected to the annular conveyor belt, the middle part of the conveying frame is fixedly installed with a protective box through a group of lifting push rods, the interior of the protective box is fixedly provided with a water storage chamber, the interior of the protective box is installed with a guide module, the peripheral side of the guide module is connected to the annular protective film, the surface of the annular protective film is provided with two symmetrically arranged paint-permeable areas, the interior of the water storage chamber is installed with a varnish component for cleaning the annular protective film, one side of the film outlet of the protective box is installed with an electric heating plate cooperating with the annular protective film, and one side of the material outlet of the conveying frame is installed with an electric heating box.

[0008] Preferably, the transmission module includes an active roller, a driven roller and a conveying motor fixed to the side of the conveying frame, which are rotatably connected to the inner surface of the conveying frame. One end of the output shaft of the conveying motor is fixedly connected to the active roller, and the circumferential side surfaces of the active roller and the driven roller are both transmission-connected to the annular conveyor belt.

[0009] Furthermore, the dual-axis spraying mechanism respectively includes a driving frame fixed to the surface of the conveying frame, a paint supply assembly is installed on the surface of the driving frame, a screw transmission module a is installed inside the driving frame, the inner wall of the driving frame is slidably connected with a longitudinal moving frame driven by the screw transmission module a, the inner wall of the longitudinal moving frame is installed with a screw transmission module b, the inner wall of the longitudinal moving frame is slidably connected with a spray seat driven by the screw transmission module b, a vertically arranged paint spray head is installed inside the spray seat, and the port of the paint spray head is fixedly connected to the paint supply assembly through a pipe.

[0010] Furthermore, the guide module includes four guide rollers that are regularly distributed and rotatably connected to the inner surface of the protective box and a transmission motor fixed to the side of the protective box. The output shaft end of the transmission motor is fixedly connected to one of the guide rollers, and the circumferential side surfaces of the four guide rollers are all transmission-connected to the annular protective film.

[0011] Furthermore, the annular protective film is made of rubber, an anti-stick coating is fixedly provided on the surface of the annular protective film, and a paint-permeable opening is fixedly provided on the surface of the paint-permeable area.

[0012] Furthermore, the varnish assembly comprises two symmetrically arranged cleaning brush shafts which are rotatably connected to the inner surface of the water storage chamber, the two cleaning brush shafts are linked to each other by a chain a, the circumferential side surface of one of the cleaning brush shafts is transmission connected to the guide roller at an adjacent position by a chain b, the circumferential side surfaces of the two cleaning brush shafts are respectively fixedly installed with a forward spiral brush piece and a reverse spiral brush piece, the circumferential side surfaces of the forward spiral brush piece and the reverse spiral brush piece are both in contact with the annular protective film, and two groups of symmetrically arranged heating rods are installed inside the water storage chamber.

[0013] Furthermore, a group of electric heating rods distributed in a linear array are installed on the inner top of the electric heating box.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model changes the single-use non-circular structure of the anti-spray protection structure in the traditional circuit board spraying device into a circulating protection structure through the arrangement of an annular protective film, a guide film group, a varnish component and an electric heating plate. When a single paint-permeable area on the annular protective film is used, the position of the paint-permeable area can be cyclically changed, and during the change process, it is physically cleaned and cyclically dried by the varnish component. By achieving the above-mentioned technical effects, the spray protection cost of the spraying device is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a circuit board spraying device of the utility model;

[0018] Figure 2 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of the lifting push rod and the protective box of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the guide module and the electric heating plate of the utility model;

[0021] Figure 5 It is a schematic structural diagram of the annular protective film and the paint-transmitting area of ​​the utility model.

[0022] The markings in the attached drawings are: 1. conveyor frame; 2. transmission module; 3. ring conveyor belt; 4. lifting push rod; 5. protective box; 6. guide module; 7. ring protective film; 8. paint penetration area; 9. electric heating plate; 10. electric heating box; 11. drive frame; 12. longitudinal moving frame; 13. spray seat; 14. paint spray head; 15. cleaning brush shaft; 16. forward spiral brush; 17. reverse spiral brush; 18. heating rod; 19. paint supply assembly. DETAILED DESCRIPTION

[0023] See also Figure 1 - Figure 5 , this specific embodiment is a circuit board spraying device, including a conveyor frame 1, and a transmission module 2 and a double-axis spraying mechanism are respectively installed on the surface of the conveyor frame 1;

[0024] The double-axis spraying mechanism comprises a driving frame 11 fixed to the surface of the conveying frame 1, and a paint supply component 19 is installed on the surface of the driving frame 11;

[0025] The paint supply assembly 19 includes a paint box and a paint pump, one end of the paint inlet of the paint pump is connected to the paint box, and one end of the paint outlet of the paint pump is connected to the paint spray head 14;

[0026] A screw transmission module a is installed inside the driving frame 11, and a longitudinal moving frame 12 driven by the screw transmission module a is slidably connected to the inner wall of the driving frame 11, and a screw transmission module b is installed on the inner wall of the longitudinal moving frame 12, and a spraying seat 13 driven by the screw transmission module b is slidably connected to the inner wall of the longitudinal moving frame 12, and a vertically arranged spraying head 14 is installed inside the spraying seat 13, and a port of the spraying head 14 is fixedly connected to the paint supply component 19 through a pipeline;

[0027] The peripheral side of the transmission module 2 is connected to an annular conveyor belt 3, which is used for the continuous automatic feeding operation of the circuit boards to be sprayed;

[0028] When the circular conveyor belt 3 is spraying the circuit boards, the circuit boards are neatly placed on the circular conveyor belt 3;

[0029] The transmission module 2 includes a driving roller, a driven roller, and a conveying motor fixed to the side of the conveying frame 1, which are rotatably connected to the inner surface of the conveying frame 1. One end of the output shaft of the conveying motor is fixedly connected to the driving roller, and the peripheral side surfaces of the driving roller and the driven roller are both transmission-connected to the endless conveyor belt 3.

[0030] A protective box 5 is fixedly installed in the middle of the conveying frame 1 through a group of lifting push rods 4, a water storage chamber is fixedly arranged inside the protective box 5, a guide module 6 is installed inside the protective box 5, and an annular protective film 7 is transmission-connected to the peripheral side of the guide module 6, and the movement direction of the annular protective film 7 is perpendicular to the movement direction of the annular conveyor belt 3;

[0031] The guide module 6 includes four guide rollers which are regularly distributed and rotatably connected to the inner surface of the protective box 5 and a transmission motor fixed to the side of the protective box 5. The output shaft end of the transmission motor is fixedly connected to a guide roller, and the peripheral side surfaces of the four guide rollers are all transmission-connected to the annular protective film 7.

[0032] The annular protective film 7 is made of rubber, and an anti-stick coating is fixedly provided on the surface of the annular protective film 7;

[0033] The anti-stick coating is made by brushing with a nano anti-stick coating, and the anti-stick coating is used to reduce the adhesion rate of the sprayed paint on the surface of the annular protective film 7;

[0034] The surface of the annular protective film 7 is provided with two symmetrically arranged paint-permeable areas 8, and the surface of the paint-permeable area 8 is fixedly provided with a paint-permeable opening, which is used to pass the paint and shield the designated non-spraying area of ​​the circuit board. The shape of the paint-permeable opening can be customized according to the spraying and shielding protection requirements of the circuit board;

[0035] A varnish component for cleaning the annular protective film 7 is installed inside the water storage chamber;

[0036] The varnish clearing assembly comprises two symmetrically arranged brushing shafts 15 rotatably connected to the inner surface of the water storage chamber, the two brushing shafts 15 are linked to each other through a chain a, the peripheral side of one brushing shaft 15 is connected to the guide roller at the adjacent position through a chain b, and the peripheral side of the two brushing shafts 15 are respectively fixedly installed with a forward spiral brush piece 16 and a reverse spiral brush piece 17, the peripheral side of the forward spiral brush piece 16 and the reverse spiral brush piece 17 are both in contact with the annular protective film 7, and two groups of symmetrically arranged heating rods 18 are installed inside the water storage chamber;

[0037] By setting the forward spiral brush piece 16 and the reverse spiral brush piece 17, the surface of the annular protective film 7 is physically cleaned in a bidirectional manner, and the cleaning effect of the surface of the annular protective film 7 is ensured by achieving the bidirectional cleaning effect;

[0038] The forward spiral brush piece 16 and the reverse spiral brush piece 17 are both made of rubber;

[0039] The heating rod 18 is used to heat the liquid and paint stains inside the water storage chamber at a constant temperature to prevent the paint from condensing;

[0040] When the spray device is in use, the cleaning liquid stored in the water storage chamber should be replaced regularly;

[0041] An electric heating plate 9 is installed on one side of the film outlet of the protective box 5, which cooperates with the annular protective film 7. The electric heating plate 9 is used to perform a thermal drying operation on the annular protective film 7 after cleaning, so that the annular protective film 7 can be circulated for protective operation;

[0042] An electric heating box 10 is installed on one side of the discharge port of the conveyor frame 1. A group of electric heating rods distributed in a linear array are installed on the inner top of the electric heating box 10. The electric heating box 10 is used to perform heat drying operation on the circuit board after painting.

[0043] Before use, the paint-permeable area 8 of the annular protective film 7 is customized according to the spraying and shielding protection requirements of the circuit board. During painting, the circuit board to be sprayed is transported and moved to the bottom of the paint-permeable area 8 via the annular conveyor belt 3. After the movement is completed, the double-axis spraying mechanism sprays the circuit board. During spraying, the distance between the paint-permeable area 8 and the circuit board can be changed by setting the lifting push rod 4. After the spraying of a single circuit board is completed, the used paint-permeable area 8 moves to the water storage chamber and the other unused paint-permeable area 8 moves back to the top of the annular conveyor belt 3, and then the circuit board is cyclically sprayed and cyclically protected. When the annular protective film 7 rotates, the forward spiral brush 16 and the reverse spiral brush 17 realize the physical cleaning of the paint-permeable area 8 after use, which is conducive to the reuse of the paint-permeable area 8.

[0044] All technical features in this embodiment can be freely combined according to actual needs.

[0045] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A circuit board spraying device, comprising a conveyor frame (1), characterized in that: The surfaces of the conveying frame (1) are respectively installed with a transmission module (2) and a double-axis spraying mechanism, the peripheral side of the transmission module (2) is connected to an annular conveyor belt (3) in a transmission manner, the middle part of the conveying frame (1) is fixedly installed with a protective box (5) through a group of lifting push rods (4), the interior of the protective box (5) is fixedly provided with a water storage chamber, the interior of the protective box (5) is installed with a guide module (6), the peripheral side of the guide module (6) is connected to an annular protective film (7), the surface of the annular protective film (7) is provided with two symmetrically arranged paint-permeable areas (8), the interior of the water storage chamber is installed with a varnish component for cleaning the annular protective film (7), one side of the film outlet of the protective box (5) is installed with an electric heating plate (9) cooperating with the annular protective film (7), and one side of the material outlet of the conveying frame (1) is installed with an electric heating box (10).

2. A circuit board spraying device according to claim 1, characterized in that: The transmission module (2) comprises a driving roller, a driven roller and a conveying motor fixed to the side of the conveying frame (1) which are rotatably connected to the inner surface of the conveying frame (1), one end of the output shaft of the conveying motor is fixedly connected to the driving roller, and the peripheral side surfaces of the driving roller and the driven roller are both transmission-connected to the annular conveyor belt (3).

3. A circuit board spraying device according to claim 2, characterized in that: The double-axis spraying mechanism comprises a driving frame (11) fixed to the surface of the conveying frame (1), a paint supply assembly (19) is installed on the surface of the driving frame (11), a screw transmission module a is installed inside the driving frame (11), the inner wall of the driving frame (11) is slidably connected to a longitudinal moving frame (12) driven by the screw transmission module a, the inner wall of the longitudinal moving frame (12) is installed with a screw transmission module b, the inner wall of the longitudinal moving frame (12) is slidably connected to a spray seat (13) driven by the screw transmission module b, a vertically arranged spray head (14) is installed inside the spray seat (13), and a port of the spray head (14) is fixedly connected to the paint supply assembly (19) through a pipeline.

4. A circuit board spraying device according to claim 1, characterized in that: The guide module (6) comprises four guide rollers which are regularly distributed and rotatably connected to the inner surface of the protective box (5) and a transmission motor fixed to the side of the protective box (5); the output shaft end of the transmission motor is fixedly connected to one of the guide rollers; and the peripheral side surfaces of the four guide rollers are all transmission-connected to the annular protective film (7).

5. A circuit board spraying device according to claim 4, characterized in that: The annular protective film (7) is made of rubber material, an anti-stick coating is fixedly provided on the surface of the annular protective film (7), and a paint-permeable opening is fixedly provided on the surface of the paint-permeable area (8).

6. A circuit board spraying device according to claim 5, characterized in that: The varnish component comprises two symmetrically arranged brush shafts (15) which are rotatably connected to the inner surface of the water storage chamber. The two brush shafts (15) are linked to each other through a chain a. The peripheral side surface of one of the brush shafts (15) is connected to the guide roller at an adjacent position through a chain b. The peripheral side surfaces of the two brush shafts (15) are respectively fixedly installed with a forward spiral brush sheet (16) and a reverse spiral brush sheet (17). The peripheral side surfaces of the forward spiral brush sheet (16) and the reverse spiral brush sheet (17) are both in contact with the annular protective film (7). Two groups of symmetrically arranged heating rods (18) are installed inside the water storage chamber.

7. A circuit board spraying device according to claim 6, characterized in that: A group of electric heating rods distributed in a linear array are installed on the inner top of the electric heating box (10).

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