Paint spraying device for circuit board processing

Abstract

The utility model relates to the technical field of circuit board processing, in particular to a paint spraying device for circuit board processing, which comprises a case, the case comprises a drying box, a spraying box is arranged on the right side of the top surface of the drying box, a feeding assembly is arranged at the top of the left side of the drying box, and a spraying assembly is connected in the spraying box and located above the right side of the feeding assembly through a spraying driving assembly; the feeding conveying belt is used for driving the clamping assembly to move towards the spraying box, so that the circuit board is driven to move towards the spraying box, automatic feeding is achieved, the side face of the circuit board is clamped through the clamping plate, and the paint spraying face cannot be shielded; the first driving assembly is used for driving the spraying frame to move front and back, the second driving assembly is used for driving the two nozzles to move horizontally and vertically at the same time, spraying can be conducted on the back face of a front circuit board and the front face of a rear circuit board at the same time, the efficiency of spraying the two circuit boards at the same time is higher, and meanwhile time consumed for feeding and discharging is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a paint spraying device for circuit board processing. Background Art

[0002] Circuit board generally refers to printed circuit board, also called PCB board, which is the carrier of electrical connection of electronic components. Its main function is to connect various electronic components through circuits, which plays the role of conduction and transmission. It is an indispensable component of electronic terminal equipment. In general industrial-grade electronic products, in order to avoid corrosion, softening, deformation, mildew and other problems of circuit boards in later use due to environmental factors such as chemicals, vibrations, high dust, salt spray, humidity and high temperature, after the components are welded, it is necessary to cover the surface of the circuit board with a layer of three-proof paint. In the prior art, the most common method of applying three-proof paint is spraying. Since both sides of the circuit board need to be sprayed, one side is generally sprayed first, and the other side is sprayed after the paint surface is dry, which is inefficient.

[0003] Application number 202020155104.0 provides a high-efficiency paint spraying device for circuit board production, including a workbench, on which a drive roller group is rotatably installed, a drive belt is sleeved on the drive roller group, a card slot is welded on the outer wall of the drive belt, a circuit board is clamped in the card slot, and a leakage hole is opened on the workbench, and the diameter of the leakage hole is the width of the circuit board. Support legs and a drying box are welded and installed on the bottom of the workbench, a fixed plate is welded and installed on the inner wall of the drying box, and an exhaust plate is welded and installed on the top of the fixed plate. The exhaust plate is hollow inside and air outlets are opened on the corresponding surfaces of the two groups of exhaust plates.

[0004] The device uses a rotary spraying method to paint the double sides of the circuit board, which can improve the efficiency of painting. However, the circuit board is clamped by a movable block, moved to the painting position, and after the painting is completed, the conveyor belt is moved to take out the clamp and take out the next circuit board. This process is time-consuming and can only spray one circuit board at a time, so there is still room for improvement. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a paint spraying device for circuit board processing.

[0006] The technical solution of the utility model is:

[0007] A paint spraying device for circuit board processing, comprising:

[0008] The chassis comprises a drying box, a spray box is provided on the right side of the top surface of the drying box, a loading assembly is provided on the top left side of the drying box, the loading assembly extends into the spray box, and a spray assembly is connected to the spray box and located in the spray box and on the upper right side of the loading assembly through a spray drive assembly;

[0009] The feeding assembly includes a feeding conveyor belt, the head of the feeding conveyor belt extends into the spray box, and a plurality of clamping assemblies are evenly arranged on the feeding conveyor belt, and the clamping assemblies are used to clamp the side of the circuit board. The feeding conveyor belt can drive the clamping assemblies to move toward the spray box, thereby driving the circuit board to move toward the spray box;

[0010] The spraying assembly includes a spraying frame, wherein a nozzle is slidably mounted on the bottom surface and the left side surface of the spraying frame, the two nozzles are perpendicular to each other, and the two nozzles are used to spray paint on the circuit board at the same time, and the tail end of the nozzle is connected to a paint hard pipe, and the two paint hard pipes are perpendicular to each other and are used to supply conformal paint to the nozzle;

[0011] The spray drive assembly includes a first drive assembly and a second drive assembly. The first drive assembly connects the spray rack and the spray box and is used to drive the spray rack to move back and forth in the spray box. The second drive assembly connects the paint tube and the spray rack and is used to drive the horizontal paint tube to move vertically and the vertical paint tube to move horizontally.

[0012] Preferably, the clamping assembly comprises two feeding racks, which are symmetrically mounted on the front and rear sides of the loading conveyor belt, and a clamping plate is mounted on the opposite side of the feeding rack via a clamping spring.

[0013] Preferably, a guide groove is provided through the side of the spray frame, a sliding frame is slidably installed in the guide groove, and the nozzle and the paint hard tube are fixedly connected to the sliding frame.

[0014] Preferably, the axes of the nozzles intersect and are perpendicular to each other, and the axes of the paint tubes are perpendicular to each other and do not intersect.

[0015] Preferably, there are two first drive assemblies, each of which includes a first motor, a first lead screw connected to an output shaft of the first motor, a first sliding frame threadedly connected to the first lead screw, and the first sliding frame is fixedly connected to the spray frame.

[0016] Preferably, the second driving assembly includes a second motor, the output shaft of the second motor is connected to a second screw, the axis of the second screw is at an angle of 45° to the vertical direction, and a sliding block is provided on the second screw and located inside the spray frame.

[0017] Preferably, the slider is slidably connected to a second sliding rod on both the front and rear sides, the second sliding rod is fixedly connected to the spraying frame, and the slider is slidably connected to the two paint hard tubes at the same time.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model utilizes a feeding conveyor belt to drive the clamping component to move toward the spray box, thereby driving the circuit board to move toward the spray box, realizing automatic feeding, and utilizes the clamping plate to clamp the side of the circuit board without blocking the paint surface, and by arranging two mutually perpendicular nozzles, utilizes the first driving component to drive the spray frame to move back and forth, utilizes the second driving component to simultaneously move the two nozzles horizontally and vertically respectively, and can simultaneously spray the back side of the previous circuit board and the front side of the subsequent circuit board, and spraying two boards at the same time is more efficient, and at the same time avoids the time-consuming loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the chassis structure in the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the feeding component in the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the spraying component in the utility model.

[0024] The meaning of each number in the figure is:

[0025] 1. Chassis; 11. Drying box; 12. Spraying box;

[0026] 2. Feeding assembly; 21. Feeding conveyor belt; 22. Feeding rack; 23. Clamping plate; 24. Clamping spring;

[0027] 3. Spraying assembly; 31. Nozzle; 32. Paint tube; 33. Sliding rack; 34. Spraying rack; 35. Guide groove;

[0028] 4. Spraying drive assembly; 41. First motor; 42. First lead screw; 43. First sliding frame; 44. Sliding block; 45. Second screw rod; 46. Second sliding rod; 47. Second motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] Embodiment 1:

[0032] See also Figure 1-4 The utility model describes the above technical solution in detail through the following embodiments:

[0033] A paint spraying device for circuit board processing, comprising:

[0034] Chassis 1, chassis 1 includes a drying box 11, a spray box 12 is provided on the right side of the top surface of the drying box 11, a loading assembly 2 is provided on the top left side of the drying box 11, the loading assembly 2 extends into the spray box 12, and a spray assembly 3 is connected to the spray box 12 and located on the upper right side of the loading assembly 2 through a spray drive assembly 4.

[0035] The drying box 11 and the spray box 12 are fixedly connected by bolts. The drying box 11 can support the spray box 12.

[0036] The loading assembly 2 includes a loading conveyor belt 21, the head of which extends into the spray box 12. A number of clamping assemblies are evenly arranged on the loading conveyor belt 21, and the clamping assemblies are used to clamp the sides of the circuit board. The loading conveyor belt 21 can drive the clamping assemblies to move toward the spray box 12, thereby driving the circuit board to move toward the spray box 12.

[0037] The feeding conveyor belt 21 adopts a known transmission belt device, and a chain plate type conveyor can be adopted. The feeding conveyor belt 21 is installed on the left top of the drying box 11 by bolts or welding, and most of the feeding conveyor belt 21 is wrapped by the drying box 11.

[0038] The clamping assembly includes two feeding racks 22 , which are symmetrically mounted on the front and rear sides of the loading conveyor belt 21 , and a clamping plate 23 is mounted on the opposite side of the feeding rack 22 via a clamping spring 24 .

[0039] The bottom of the feeding rack 22 is fixedly connected to the conveyor belt of the feeding conveyor belt 21 by bolts, one end of the clamping spring 24 is fixedly connected to the feeding rack 22 by bolts, and the other end is welded to the clamping plate 23. When the circuit board is inserted from between the two opposite clamping plates 23, the clamping plates 23 are pressed toward both sides, and the clamping plates 23 compress the clamping spring 24. The elastic force of the clamping spring 24 enables the clamping plates 23 to clamp the circuit board, and can also meet the needs of fixing circuit boards of different sizes.

[0040] It should be noted that the spacing between adjacent feeding racks 22 should ensure that when the rightmost feeding rack 22 is horizontal, the two adjacent feeding racks 22 are in a vertical state. At the same time, the distance of each movement of the feeding conveyor belt 21 is the spacing between the two adjacent feeding racks 22.

[0041] The spraying assembly 3 includes a spraying frame 34, and a nozzle 31 is slidably mounted on the bottom surface and the left side surface of the spraying frame 34, and the two nozzles 31 are perpendicular to each other. The two nozzles 31 are used to spray paint on the circuit board at the same time, and the tail ends of the nozzles 31 are connected to paint hard pipes 32, and the two paint hard pipes 32 are perpendicular to each other and are used to supply three-proof paint to the nozzles 31;

[0042] The spraying rack 34 is made of gold plates welded together. The spraying rack 34 is octagonal in shape as a whole. The horizontal and vertical sides of the spraying rack 34 are relatively long, and the four oblique sides of the spraying rack 34 are relatively short.

[0043] The nozzle 31 is threadedly connected to the paint tube 32. The paint tube 32 is a metal tube. The tail end of the paint tube 32 is connected to a feeding device through a hose. The feeding device can be a known paint spraying pressure barrel. The paint can enter the nozzle 31 through the paint tube 32 and then be sprayed out from the nozzle 31. The two nozzles 31 are perpendicular to each other and can spray paint from the bottom and the left at the same time.

[0044] A guide groove 35 is formed through the side of the spray frame 34 , and a sliding frame 33 is slidably installed in the guide groove 35 . The nozzle 31 and the paint hard pipe 32 are fixedly connected to the sliding frame 33 .

[0045] The nozzle 31 and the paint tube 32 are engaged with the sliding frame 33. The sliding frame 33 can slide along the guide groove 35, so the nozzle 31 and the paint tube 32 can slide along the guide groove 35.

[0046] The axes of the nozzles 31 intersect and are perpendicular to each other, and the axes of the paint tubes 32 are perpendicular to each other and do not intersect.

[0047] The axes of the paint tubes 32 are perpendicular to each other and do not intersect, so that the two paint tubes 32 will not block each other when moving at the same time.

[0048] The spray drive assembly 4 includes a first drive assembly and a second drive assembly. The first drive assembly connects the spray frame 34 and the spray box 12, and is used to drive the spray frame 34 to move back and forth in the spray box 12. The second drive assembly connects the paint tube 32 and the spray frame 34, and is used to drive the horizontal paint tube 32 to move vertically and the vertical paint tube 32 to move horizontally.

[0049] It should be noted that the distance that the spray rack 34 moves forward and backward needs to be greater than the width of the feeding conveyor belt 21.

[0050] There are two first drive assemblies, each of which includes a first motor 41 . The output shaft of the first motor 41 is connected to a first lead screw 42 via a coupling. A first sliding frame 43 is threadedly connected to the first lead screw 42 . The first sliding frame 43 is fixedly connected to the spray frame 34 .

[0051] The first motor 41 is a servo motor, and the first motor 41 is fixedly mounted on the top surface and right side surface of the spray box 12 by bolts. The first sliding frame 43 is fixedly mounted on the upper left and lower right bevels of the spray frame 34 by bolts. After the first motor 41 is started, it can drive the first screw 42 to rotate through the coupling, thereby driving the first sliding frame 43 to move along the axis direction of the first screw 42, and then driving the spray frame 34 to move along the axis direction of the first screw 42, so as to achieve the front and rear position adjustment of the spray frame 34. When the spray frame 34 moves to the innermost side of the spray box 12, it will not affect the rotation of the feeding conveyor belt 21 driving the feeding frame 22.

[0052] The second driving assembly includes a second motor 47, the output shaft of the second motor 47 is connected to a second screw 45 through a coupling, the axis of the second screw 45 is at an angle of 45° to the vertical direction, and a slider 44 is connected to the second screw 45 and is located in the internal thread of the spray frame 34. The slider 44 is slidably connected to a second slide bar 46 on both sides of the front and rear sides, and the second slide bar 46 is fixedly connected to the spray frame 34. The slider 44 is slidably connected to the two paint hard pipes 32 at the same time.

[0053] The second motor 47 is fixedly mounted by bolts on the outer side of the upper right corner bevel of the spray frame 34. After the second motor 47 is started, it can drive the second screw 45 to rotate through the coupling, thereby driving the slider 44 to move along the second slide rod 46. That is, it moves along the 45° direction.

[0054] Because slide block 44 is slidably connected with two coating tubes 32 simultaneously. Therefore, when slide block 44 moves along 45 ° direction, the vertical motion of horizontal coating tube 32, vertical coating tube 32 moves horizontally.

[0055] When the operator of this embodiment uses the device, he inserts the circuit board between the two opposite clamping plates 23. The feeding conveyor 21 is started to drive the upper feeding rack 22 to move toward the spray box 12, thereby driving the circuit board to move toward the spray box 12 through the clamping plates 23.

[0056] When the circuit board moves to the rightmost end of the feeding conveyor belt 21, the circuit board becomes horizontal, and the circuit board above it is in a vertical state. The movement of the feeding conveyor belt 21 is stopped.

[0057] The first motor 41 is started to drive the first lead screw 42 to rotate through the coupling, thereby driving the first sliding frame 43 to move along the axis direction of the first lead screw 42 , and further driving the spraying frame 34 to move along the axis direction of the first lead screw 42 .

[0058] At the same time, the second motor 47 is started to drive the second screw 45 to rotate through the coupling, thereby driving the slider 44 to move along the second slide rod 46. That is, it moves along the 45° direction. When the slider 44 moves along the 45° direction, the horizontal paint tube 32 moves vertically, and the vertical paint tube 32 moves horizontally.

[0059] The first motor 41 and the second motor 47 cooperate to drive the nozzle 31 to move in two dimensions, and at this time, the paint is delivered to the nozzle 31 through the paint tube 32, and the nozzle 31 starts to spray paint. The two nozzles 31 can simultaneously spray paint on the back of the circuit board below and the front of the circuit board on the left.

[0060] After the painting is completed, the first motor 41 drives the spray rack 34 to move to the innermost side of the spray box 12, and starts the feeding conveyor 21 to drive the circuit board to move, and the moving distance is the distance between two adjacent feeding racks 22. At this time, the back of the circuit board with the front sprayed is facing upward and kept horizontal, and the completely sprayed circuit board enters the drying box 11 for drying.

[0061] When the circuit board comes out from the left end of the drying box 11, it is removed and replaced with a new circuit board.

[0062] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A paint spraying device for circuit board processing, characterized in that: include: A machine box (1), the machine box (1) comprising a drying box (11), a spray box (12) being provided on the right side of the top surface of the drying box (11), a loading assembly (2) being provided on the top left side of the drying box (11), the loading assembly (2) extending into the spray box (12), a spray assembly (3) being connected to the spray box (12) and located on the upper right side of the loading assembly (2) via a spray drive assembly (4); The feeding assembly (2) comprises a feeding conveyor belt (21), the head of the feeding conveyor belt (21) extends into the spray box (12), a plurality of clamping assemblies are evenly arranged on the feeding conveyor belt (21), the clamping assemblies are used to clamp the side of the circuit board, and the feeding conveyor belt (21) can drive the clamping assemblies to move toward the spray box (12), thereby driving the circuit board to move toward the spray box (12); The spraying assembly (3) comprises a spraying frame (34), wherein a nozzle (31) is slidably mounted on the bottom surface and the left side surface of the spraying frame (34), the two nozzles (31) are perpendicular to each other, and the two nozzles (31) are used to spray paint on the circuit board at the same time, and the tail end of the nozzle (31) is connected to a paint hard tube (32), and the two paint hard tubes (32) are perpendicular to each other and are used to supply conformal paint to the nozzle (31); The spray drive assembly (4) comprises a first drive assembly and a second drive assembly, wherein the first drive assembly is connected to a spray frame (34) and a spray box (12) and is used to drive the spray frame (34) to move forward and backward in the spray box (12), and the second drive assembly is connected to a paint tube (32) and a spray frame (34) and is used to drive the horizontal paint tube (32) to move vertically and the vertical paint tube (32) to move horizontally.

2. A paint spraying device for circuit board processing as claimed in claim 1, characterized in that: The clamping assembly comprises two feeding racks (22), which are symmetrically mounted on the front and rear sides of the loading conveyor belt (21), and a clamping plate (23) is mounted on the opposite side of the feeding rack (22) via a clamping spring (24).

3. A paint spraying device for circuit board processing as claimed in claim 2, characterized in that: A guide groove (35) is provided through the side of the spraying frame (34), a sliding frame (33) is slidably installed in the guide groove (35), and the nozzle (31) and the paint hard pipe (32) are fixedly connected to the sliding frame (33).

4. A paint spraying device for circuit board processing as claimed in claim 3, characterized in that: The axes of the nozzles (31) intersect and are perpendicular to each other, and the axes of the paint hard tubes (32) are perpendicular to each other and do not intersect.

5. A paint spraying device for circuit board processing as claimed in claim 4, characterized in that: There are two first drive assemblies, each of which comprises a first motor (41), the output shaft of the first motor (41) is connected to a first lead screw (42), the first lead screw (42) is threadedly connected to a first sliding frame (43), and the first sliding frame (43) is fixedly connected to a spray frame (34).

6. A paint spraying device for circuit board processing as claimed in claim 5, characterized in that: The second driving assembly comprises a second motor (47), the output shaft of the second motor (47) is connected to a second screw rod (45), the axis of the second screw rod (45) is at an angle of 45° to the vertical direction, and a sliding block (44) is provided on the second screw rod (45) and located inside the spray frame (34).

7. A paint spraying device for circuit board processing as claimed in claim 6, characterized in that: The slider (44) is slidably connected to a second slide bar (46) at the front and rear sides, the second slide bar (46) is fixedly connected to the spraying frame (34), and the slider (44) is slidably connected to the two paint hard tubes (32) at the same time.

Images