High-precision dispensing equipment for surface of printed circuit board

Abstract

The utility model discloses high-precision glue dispensing equipment for the surface of a printed circuit board. The high-precision glue dispensing equipment comprises a rack, a conveying belt, a transverse moving mechanism, a mechanical arm, a CCD (Charge Coupled Device) positioning camera, a glue dispensing assembly, a longitudinal moving mechanism, a CCD detection camera and a UV (Ultraviolet) irradiation assembly, the CCD positioning camera and the dispensing assembly are connected with the mechanical arm, and the longitudinal moving mechanism is connected with the CCD detection camera. The conveying belt can convey the printed circuit board to a dispensing station area along the line, the CCD positioning camera can detect the position of an area to be dispensed on the printed circuit board, and the dispensing assembly can accurately dispense glue at a required position according to position information provided by the CCD positioning camera; after glue dispensing is completed, the CCD detection camera can detect the glue dispensing position, and glue dispensing defects and defective products are avoided; in the dispensing and detecting process, the UV irradiation assembly can conduct UV curing on the dispensing position on the printed circuit board, and glue is prevented from flowing or deforming in the conveying process.

Description

Technical Field

[0001] The utility model relates to the field of circuit board glue dispensing, in particular to a high-precision glue dispensing device on the surface of a printed circuit board. Background Art

[0002] During the surface mount production of printed circuit boards, glue needs to be dispensed at specific locations on the printed circuit boards to fill the tiny gaps and cracks on the printed circuit boards and form a complete protective layer, thereby improving the sealing, dustproof and moisture-proof properties of the printed circuit boards. It can also enhance the mechanical strength of the circuit boards, improve their ability to resist shock and vibration, and thus improve the reliability and stability of the printed circuit boards.

[0003] In the prior art, the method of gluing printed circuit boards on the market is generally to stack the printed circuit boards and place them on a tray, then move them to the gluing equipment through a robotic arm, and perform gluing operations on the printed circuit boards through visual positioning; however, this gluing method has an intermediate transfer process, which affects the production efficiency of the printed circuit boards; in addition, after the printed circuit boards are glued, they often need to be manually transferred to a curing furnace for batch curing. This method not only increases the labor costs of the company, but also easily causes debonding due to accidental contact with components during the transfer process, thereby affecting the production quality of the printed circuit boards.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a high-precision glue dispensing device on the surface of a printed circuit board which can dispense glue online and has a high glue curing rate, thereby effectively improving production efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: a high-precision glue dispensing device for the surface of a printed circuit board, comprising a frame, a conveyor belt, a lateral moving mechanism, a mechanical arm, a CCD positioning camera, a glue dispensing component, a longitudinal moving mechanism, a CCD detection camera and two sets of UV irradiation components;

[0007] The conveyor belt is arranged at the side end of the frame, and the conveyor belt is used to convey the printed circuit board to be dispensed. The lateral moving mechanism is arranged on the frame, and the lateral moving mechanism is connected to the mechanical arm, and the lateral moving mechanism is used to drive the mechanical arm to move along the conveying direction of the conveyor belt;

[0008] The CCD positioning camera and the glue dispensing component are respectively connected to the mechanical arm, the CCD positioning camera is used to collect the position of the printed circuit board to be glued on the conveyor belt, and the glue dispensing component is used to perform glue dispensing operation on the printed circuit board;

[0009] The longitudinal moving mechanism is arranged on the frame, the longitudinal moving mechanism is connected to the CCD detection camera, the longitudinal moving mechanism is used to drive the CCD detection camera to reciprocate along the width direction of the conveyor belt, and the CCD detection camera is used to detect the dispensing position on the printed circuit board;

[0010] One group of UV irradiation components is arranged above the conveyor belt at the side end of the lateral moving mechanism, and another group of UV irradiation components is arranged above the conveyor belt at the side end of the longitudinal moving mechanism. The UV irradiation components are used to emit UV light toward the printed circuit board on the conveyor belt.

[0011] According to the above technical solution, in the high-precision glue dispensing device for printed circuit board surface, the glue dispensing assembly includes a mounting plate, a glue cylinder, a glue dispensing head and a needle clamping plate;

[0012] The mounting plate is connected to the robotic arm, the two dispensing heads are respectively arranged on both sides of the mounting plate, the top of the dispensing head is connected to the glue cylinder, the glue cylinder is used to provide glue to the dispensing head, a needle head is provided at the bottom of the dispensing head, the needle head clamping plate is arranged on the mounting plate, and the needle head clamping plate is provided with a clamping hole for clamping the needle head.

[0013] By adopting the above-mentioned technical solutions, in the high-precision glue dispensing equipment on the surface of a printed circuit board, inclined light sources are further provided on both sides below the CCD detection camera, and the light sources are used to provide illumination for the CCD detection camera.

[0014] By adopting the above-mentioned technical solutions, in the printed circuit board surface high-precision glue dispensing equipment, the CCD detection camera is connected to the longitudinal moving mechanism through a sliding plate assembly, and the sliding plate assembly is used to adjust the height of the CCD detection camera;

[0015] The sliding plate assembly includes a connecting arm, a fixed plate, a slider and a first locking bolt. The fixed plate is connected to the movable end of the longitudinal moving mechanism through the connecting arm. A waist-shaped groove is provided on the fixed plate. One end of the slider is connected to the CCD detection camera, and the other end of the slider is locked and connected to the waist-shaped groove through the first locking bolt.

[0016] By adopting the above-mentioned technical solutions, in the high-precision glue dispensing equipment on the surface of the printed circuit board, the mechanical arm includes a base, a first rotating arm, a second rotating arm, a telescopic arm and a lifting frame, the base is connected to the movable end of the lateral moving mechanism, the base is connected to the second rotating arm through the first rotating arm, the telescopic arm is arranged on the second rotating arm, the lifting frame is connected to the bottom of the telescopic arm, and the CCD positioning camera and the glue dispensing assembly are both arranged on the lifting frame.

[0017] By adopting the above-mentioned technical solutions, in the printed circuit board surface high-precision glue dispensing equipment, the UV irradiation component includes a support frame, a connecting plate, a UV lamp body and a second locking bolt;

[0018] The support frame is arranged on the frame of the conveyor belt, the connecting plate is connected to the support frame, a positioning hole is arranged on the connecting plate, a pin is arranged on the side end of the UV lamp body, the UV lamp body can be movably connected with the positioning hole through the pin, an arc groove is arranged on the connecting plate below the positioning hole, and the second locking bolt is used to pass through the arc groove and be locked and connected with the UV lamp body.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The conveyor belt of the utility model can convey the printed circuit board to the glue dispensing station area along the line, the CCD positioning camera can detect the position of the area to be glued on the printed circuit board, and process and analyze it by taking images to determine the position coordinates where the glue dispensing operation is required and feed it back to the glue dispensing component, and the glue dispensing component can accurately apply glue to the required position according to the position information provided by the CCD positioning camera to fill tiny gaps or cracks; after the glue dispensing is completed, the conveyor belt can convey the printed circuit board to the inspection station area, at this time, the CCD inspection camera can detect the glue dispensing position to avoid glue dispensing defects and the generation of defective products; during the glue dispensing and inspection process, the UV irradiation component can perform UV curing on the glue dispensing position on the printed circuit board to prevent the glue from flowing or deforming during the transportation process, thereby improving the quality and reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the mechanical arm of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the glue dispensing component of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of a CCD detection camera of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the CCD detection camera of the utility model from another viewing angle;

[0028] Figure 6 It is a schematic diagram of the structure of the UV irradiation component of the utility model. DETAILED DESCRIPTION

[0029] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, 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 "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0031] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0032] like Figures 1 to 6 As shown, the embodiment of the utility model provides a high-precision glue dispensing device for the surface of a printed circuit board, including a frame 1, a conveyor belt 2, a lateral moving mechanism 3, a mechanical arm 4, a CCD positioning camera 5, a glue dispensing component 6, a longitudinal moving mechanism 7, a CCD detection camera 8 and two sets of UV irradiation components 9;

[0033] like Figure 1 As shown, the conveyor belt 2 is arranged at the side end of the frame 1, and the conveyor belt 2 is used to convey the printed circuit board to be glued, the lateral moving mechanism 3 is arranged on the frame 1, and the lateral moving mechanism 3 is connected to the mechanical arm 4, and the lateral moving mechanism 3 is used to drive the mechanical arm 4 to move along the conveying direction of the conveyor belt 2, the CCD positioning camera 5 and the glue dispensing component 6 are respectively connected to the mechanical arm 4, the CCD positioning camera 5 is used to collect the position of the printed circuit board to be glued on the conveyor belt 2, and the glue dispensing component 6 is used to perform glue dispensing operation on the printed circuit board; when the conveyor belt 2 conveys the printed circuit board along the line When it is sent to the glue dispensing station area, the CCD positioning camera 5 can detect the position of the area to be glued on the printed circuit board, and process and analyze it by taking images to determine the position coordinates where the glue dispensing operation is required and feed them back to the glue dispensing component 6. The glue dispensing component 6 can accurately apply glue to the required position based on the position information provided by the CCD positioning camera 5 to fill tiny gaps or cracks; the robotic arm 4 can move the CCD positioning camera 5 and the glue dispensing component 6 to the correct position for glue dispensing operations; and the lateral moving mechanism 3 is used to drive the robotic arm 4 to move along the direction of the conveyor belt 2, so that the robotic arm 4 can move with the movement of the printed circuit board.

[0034] The longitudinal moving mechanism 7 is arranged on the frame 1, and the longitudinal moving mechanism 7 is connected to the CCD detection camera 8. The longitudinal moving mechanism 7 is used to drive the CCD detection camera 8 to move back and forth along the width direction of the conveyor belt 2, and the CCD detection camera 8 is used to detect the dispensing position on the printed circuit board; when the printed circuit board completes the dispensing operation, the conveyor belt 2 can convey the printed circuit board to the detection station area. At this time, the CCD detection camera 8 can perform data analysis by taking images, so as to timely discover and correct the dispensing deviation, and avoid the production of dispensing defects and defective products; the longitudinal moving mechanism 7 can drive the CCD detection camera 8 to move back and forth along the width direction of the conveyor belt 2, so that the CCD detection camera 8 can cover the entire printed circuit board area, ensuring that all dispensing positions are fully detected.

[0035] like Figure 1As shown, one group of the UV irradiation components 9 is arranged above the conveyor belt 2 at the side end of the lateral moving mechanism 3, and another group of the UV irradiation components 9 is arranged above the conveyor belt 2 at the side end of the longitudinal moving mechanism 7. The UV irradiation components 9 are used to emit UV light toward the printed circuit board on the conveyor belt 2 to cure the glue dot position on the printed circuit board, thereby accelerating the curing rate, preventing the glue from flowing or deforming during transportation, and improving the quality and reliability of the product.

[0036] like Figure 3 As shown, further, the dispensing assembly 6 includes a mounting plate 61, a glue cylinder 62, a dispensing head 63 and a needle clamping plate 64, the mounting plate 61 is connected to the robotic arm 4, the two dispensing heads 63 are respectively arranged on both sides of the mounting plate 61, the top of the dispensing head 63 is connected to the glue cylinder 62, the glue cylinder 62 is used to provide glue for the dispensing head 63, the bottom of the dispensing head 63 is provided with a needle head 631, the needle clamping plate 64 is arranged on the mounting plate 61, and the needle clamping plate 64 is provided with a clamping hole for clamping the needle head 631. The top of the glue cylinder 62 can be connected to an external pneumatic injection device. When the glue dispensing head 63 moves to the target position, the external pneumatic injection device can spray high-pressure gas to the glue cylinder 62, so that the glue will flow from the glue cylinder 62 to the glue dispensing head 63, and accurately apply the glue to the designated position of the printed circuit board through the small hole of the needle head 631. The setting of the needle clamping plate 64 can prevent the needle head 631 from deviating, thereby improving the accuracy of the glue dispensing operation.

[0037] like Figure 4 and Figure 5 As shown, further, light sources 81 are arranged at an angle on both sides below the CCD detection camera 8, and the light sources 81 are used to provide illumination for the CCD detection camera 8. The setting of the light source 81 at an angle can avoid the interference of shadows or reflections on the detection results, thereby improving the accuracy and reliability of the detection.

[0038] like Figure 4 and Figure 5As shown, further, the CCD detection camera 8 is connected to the longitudinal moving mechanism 7 through a sliding plate assembly 71, and the sliding plate assembly 71 is used to adjust the height of the CCD detection camera 8. The sliding plate assembly 71 includes a connecting arm 711, a fixed plate 712, a slider 713 and a first locking bolt (not shown). The fixed plate 712 is connected to the movable end of the longitudinal moving mechanism 7 through the connecting arm 711, and a waist-shaped groove 7120 is provided on the fixed plate 712. One end of the slider 713 is connected to the CCD detection camera 8, and the other end of the slider 713 is locked and connected to the waist-shaped groove 7120 through the first locking bolt. By adjusting the position of the slider 713 on the waist-shaped groove 7120, the height of the CCD detection camera 8 can be adjusted to adapt to the detection of workpieces of different heights.

[0039] like Figure 2 As shown, further, the mechanical arm 4 includes a base 41, a first rotating arm 42, a second rotating arm 43, a telescopic arm 44 and a lifting frame 45, the base 41 is connected to the movable end of the lateral moving mechanism 3, the base 41 is connected to the second rotating arm 43 through the first rotating arm 42, the telescopic arm 44 is arranged on the second rotating arm 43, the lifting frame 45 is connected to the bottom of the telescopic arm 44, and the CCD positioning camera 5 and the dispensing component 6 are both arranged on the lifting frame 45. The first rotating arm 42 and the second rotating arm 43 can drive the CCD positioning camera 5 and the dispensing component 6 to rotate in the horizontal plane with two degrees of freedom, and the operating range is wide. The telescopic arm 44 can drive the lifting frame 45 to move up and down to adjust the height of the CCD positioning camera 5 and the dispensing component 6.

[0040] like Figure 1 and Figure 6 As shown, further, the UV irradiation assembly 9 includes a support frame 91, a connecting plate 92, a UV lamp body 93 and a second locking bolt (not shown), the support frame 91 is arranged on the frame 1 of the conveyor belt 2, the connecting plate 92 is connected to the support frame 91, the connecting plate 92 is provided with a positioning hole 920, the side end of the UV lamp body 93 is provided with a pin 931, the UV lamp body 93 can be movably connected with the positioning hole 920 through the pin 931, the connecting plate 92 below the positioning hole 920 is provided with an arc groove 921, and the second locking bolt is used to pass through the arc groove 921 and be locked and connected with the UV lamp body 93. The UV lamp body 93 can emit UV light to cure the glue on the printed circuit board; the arrangement of the arc groove 921 and the positioning hole 920 can facilitate the user to adjust the irradiation angle of the UV lamp body 93, so that the UV light is irradiated to the surface of the printed circuit board at the most suitable angle, thereby improving the curing efficiency and quality.

[0041] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A high-precision glue dispensing device for printed circuit board surface, characterized in that: It includes a frame, a conveyor belt, a lateral moving mechanism, a mechanical arm, a CCD positioning camera, a dispensing component, a longitudinal moving mechanism, a CCD detection camera and two sets of UV irradiation components; The conveyor belt is arranged at the side end of the frame, and the conveyor belt is used to convey the printed circuit board to be dispensed. The lateral moving mechanism is arranged on the frame, and the lateral moving mechanism is connected to the mechanical arm, and the lateral moving mechanism is used to drive the mechanical arm to move along the conveying direction of the conveyor belt; The CCD positioning camera and the glue dispensing component are respectively connected to the mechanical arm, the CCD positioning camera is used to collect the position of the printed circuit board to be glued on the conveyor belt, and the glue dispensing component is used to perform glue dispensing operation on the printed circuit board; The longitudinal moving mechanism is arranged on the frame, the longitudinal moving mechanism is connected to the CCD detection camera, the longitudinal moving mechanism is used to drive the CCD detection camera to reciprocate along the width direction of the conveyor belt, and the CCD detection camera is used to detect the dispensing position on the printed circuit board; One group of UV irradiation components is arranged above the conveyor belt at the side end of the lateral moving mechanism, and another group of UV irradiation components is arranged above the conveyor belt at the side end of the longitudinal moving mechanism. The UV irradiation components are used to emit UV light toward the printed circuit board on the conveyor belt.

2. The high-precision glue dispensing equipment for printed circuit board surface according to claim 1, characterized in that: The dispensing assembly comprises a mounting plate, a glue cylinder, a dispensing head and a needle clamping plate; The mounting plate is connected to the robotic arm, the two dispensing heads are respectively arranged on both sides of the mounting plate, the top of the dispensing head is connected to the glue cylinder, the glue cylinder is used to provide glue to the dispensing head, a needle head is provided at the bottom of the dispensing head, the needle head clamping plate is arranged on the mounting plate, and the needle head clamping plate is provided with a clamping hole for clamping the needle head.

3. The high-precision glue dispensing equipment for printed circuit board surface according to claim 1, characterized in that: An inclined light source is also provided on both sides below the CCD detection camera, and the light source is used to provide illumination for the CCD detection camera.

4. The high-precision glue dispensing device for printed circuit board surface according to claim 3, characterized in that: The CCD detection camera is connected to the longitudinal moving mechanism via a sliding plate assembly, and the sliding plate assembly is used to adjust the height of the CCD detection camera; The sliding plate assembly includes a connecting arm, a fixed plate, a slider and a first locking bolt. The fixed plate is connected to the movable end of the longitudinal moving mechanism through the connecting arm. A waist-shaped groove is provided on the fixed plate. One end of the slider is connected to the CCD detection camera, and the other end of the slider is locked and connected to the waist-shaped groove through the first locking bolt.

5. The high-precision glue dispensing equipment for printed circuit board surface according to claim 1, characterized in that: The robotic arm includes a base, a first rotating arm, a second rotating arm, a telescopic arm and a lifting frame. The base is connected to the movable end of the lateral moving mechanism, the base is connected to the second rotating arm through the first rotating arm, the telescopic arm is arranged on the second rotating arm, the lifting frame is connected to the bottom of the telescopic arm, and the CCD positioning camera and the dispensing assembly are both arranged on the lifting frame.

6. The high-precision glue dispensing equipment for printed circuit board surface according to claim 1, characterized in that: The UV irradiation assembly includes a support frame, a connecting plate, a UV lamp body and a second locking bolt; The support frame is arranged on the frame of the conveyor belt, the connecting plate is connected to the support frame, a positioning hole is arranged on the connecting plate, a pin is arranged on the side end of the UV lamp body, the UV lamp body can be movably connected with the positioning hole through the pin, an arc groove is arranged on the connecting plate below the positioning hole, and the second locking bolt is used to pass through the arc groove and be locked and connected with the UV lamp body.

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