Zero-power SMT online SPI-AOI visual intelligent detection equipment

Abstract

The invention provides zero-power SMT online SPI-AOI visual intelligent detection equipment which comprises a box body, a workpiece conveying assembly arranged in the box body, and a shooting assembly arranged in the box body and located on one side of the top of the workpiece conveying assembly. The shooting assembly comprises a base plate and cameras fixed to the base plate, and the multiple cameras are arranged downwards and arranged in an array mode in the X-axis direction and the Y-axis direction so as to synchronously shoot the workpieces on the workpiece conveying assembly. According to the scheme, the cameras with the multiple fixed camera positions are arranged, the mode that the cameras slide in the X-axis direction and the Y-axis direction in the prior art is replaced, the cost of the shooting assembly and the follow-up maintenance cost are further reduced, installation and operation are simpler, and the shooting efficiency is higher.

Description

Technical Field

[0001] The present application relates to the technical field of SMT visual inspection, and in particular to a zero-power SMT online SPI-AOI visual intelligent inspection device. Background Art

[0002] SMT refers to the series of process steps performed on a printed circuit board (PCB). PCB (Printed Circuit Board) is short for surface mount technology (SMT), the most popular technology and process in the electronics assembly industry.

[0003] SPI (Solder Paste Inspection) detection: Use SPI detection equipment to perform three-dimensional scanning and analysis of the solder paste on the PCB board to detect the coating quality of the solder paste, such as thickness, shape, etc., so as to predict the welding quality.

[0004] AOI (Automated Optical Inspection) inspection: After soldering is completed, AOI equipment is used to perform automated optical inspection of the soldering points on the PCB board.

[0005] Currently, SPI-AOI visual inspection equipment used in SMT generally adopts a transmission structure consisting of servo motors, lead screws, and sliders. By driving the camera to slide along the X-axis and Y-axis and taking pictures one by one for image stitching and calculation, the transmission structure requires high precision, is inherently expensive, and is difficult to install. It is also relatively complicated for employees to operate, and the cost of repairing mechanical failures caused by movement is also high. In addition, a complete shooting process requires waiting for the camera to be transported to each shooting position through the transmission structure for shooting, which reduces shooting efficiency.

[0006] Therefore, it is necessary to provide a zero-power SMT online SPI-AOI visual intelligent inspection equipment with reduced cost, simpler installation and operation, and higher shooting efficiency. Summary of the Invention

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a zero-power SMT online SPI-AOI visual intelligent inspection device with reduced cost, simpler installation and operation, and higher shooting efficiency.

[0008] According to the implementation scheme of the present invention, the first solution is provided: a zero-power SMT online SPI-AOI visual intelligent inspection equipment, comprising: a box, a workpiece transmission assembly arranged in the box, and a shooting assembly arranged in the box and located on the top side of the workpiece transmission assembly; the shooting assembly includes a substrate and a camera fixed to the substrate, and a plurality of the cameras are arranged downward and arranged in an array along the X-axis and Y-axis directions to synchronously shoot the workpiece on the workpiece transmission assembly.

[0009] In a preferred embodiment, the shooting assembly further includes a plurality of vertical plates extending in the X-axis direction and used for mounting the camera, wherein the plurality of vertical plates are arranged at intervals along the Y-axis direction, and the vertical plates are fixed to the top of the substrate, and the substrate is provided with a plurality of first through holes for the camera to shoot.

[0010] In a preferred solution, the camera is located above the substrate.

[0011] In a preferred embodiment, the shooting assembly further includes connecting plates provided at both axial ends of the vertical plates, and the connecting plates extend along the Y-axis direction and are fixed to the plurality of vertical plates.

[0012] In a preferred solution, a connecting tube is provided between two adjacent vertical plates, and the connecting tube is fixed to the vertical plates on both sides by fasteners.

[0013] In a preferred embodiment, the shooting assembly further includes a first side plate fixed to both ends of the mounting plate in the X-axis direction, a second side plate fixed to both ends of the mounting plate in the Y-axis direction, and a bottom plate spaced apart at the bottom of the mounting plate; the bottom plate is provided with a plurality of second through holes, and the second through holes are opposite to the first through holes.

[0014] In a preferred embodiment, the box body is provided with first openings for workpiece transmission at both ends in the X-axis direction, the transmission direction of the workpiece transmission assembly is the X-axis direction, and the second side panel is provided with a plurality of ventilation holes.

[0015] In a preferred embodiment, the detection equipment further includes a support assembly for supporting the shooting assembly, the support assembly including a plurality of columns for supporting the shooting assembly, and a third side plate connecting two adjacent columns; the third side plate is located between the workpiece transmission assembly and the shooting assembly.

[0016] In a preferred embodiment, a crossbeam is further provided on the top of the box body, and the crossbeam includes a bottom and side portions located on opposite sides of the bottom. The bottom is provided with a second opening, and a plurality of second openings are spaced apart along the length direction of the bottom.

[0017] In a preferred solution, the top of the box body includes two beams, and the two beams extend along the X-axis direction and the Y-axis direction respectively and are arranged to cross each other.

[0018] The present invention has the following beneficial effects: 1. By setting up multiple fixed-position cameras instead of the existing technology that uses cameras that slide in the X-axis and Y-axis directions, the original server, motion control card, drag chain, coupling, sensor and other structures are eliminated, thereby saving about 30% of the cost and reducing mechanical failures caused by movement, thereby reducing subsequent maintenance costs.

[0019] 2. After abandoning the complex transmission structure, the shooting component adopts a relatively simple unpowered structure to reduce the difficulty of installation and operation for employees.

[0020] 3. Multiple cameras can now capture and stitch images simultaneously, eliminating the time spent sliding the camera in the X and Y axes, thereby improving shooting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a zero-power SMT online SPI-AOI visual intelligent inspection device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the zero-power SMT online SPI-AOI visual intelligent inspection equipment according to one embodiment of the present invention; Figure 3 This is a schematic structural diagram of a shooting assembly and a supporting assembly according to an embodiment of the present invention; Figure 4 A schematic structural diagram of a shooting assembly and a supporting assembly according to an embodiment of the present invention from another perspective; Figure 5 This is a structural schematic diagram of the hidden top cover of the zero-power SMT online SPI-AOI visual intelligent inspection equipment according to one embodiment of the present invention.

[0022] Reference numerals: 10, housing; 11, first opening; 20, workpiece transport assembly; 30, shooting assembly; 31, base plate; 311, first through hole; 32, camera; 33, vertical plate; 34, connecting plate; 35, connecting tube; 36, first side plate; 37, second side plate; 371, vent; 38, bottom plate; 381, second through hole; 41, vertical column; 42, third side plate; 50, crossbeam; 51, bottom; 511, opening; 52, side; DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0024] It should be noted that when an element is referred to as being “fixed on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0028] Please refer to Figures 1 to 5One embodiment of the present invention provides a zero-power SMT online SPI-AOI visual intelligent inspection device, which includes: a housing 10, a workpiece transport assembly 20, and a camera assembly 30. The workpiece transport assembly 20 is disposed in the housing 10 and is used to transport the workpiece. The camera assembly 30 is disposed in the housing 10 and is located on the top side of the workpiece transport assembly 20. The camera assembly 30 is used to photograph the workpiece below.

[0029] To further reduce the cost of the equipment itself and the maintenance costs caused by subsequent mechanical failures, reduce the difficulty of installation and operation for employees, and improve filming efficiency, the camera assembly 30 in this embodiment uses multiple fixed-position cameras 32 for filming, unlike the transmission structure using servo motors, screws, and sliders in the prior art. Specifically, the camera assembly 30 includes a base plate 31 and cameras 32 fixed to the base plate 31. The multiple cameras 32 are arranged downward and arranged in an array along the X-axis and Y-axis directions to synchronously capture the workpiece on the workpiece transport assembly 20. The X-axis and Y-axis directions are two mutually perpendicular directions in the horizontal direction.

[0030] This structure is adopted in this embodiment, which has the following beneficial effects: 1. By providing multiple fixed-position cameras 32, instead of the existing configuration in which the camera 32 slides in the X-axis and Y-axis directions, the previously used servo, motion control card, drag chain, coupling, sensor and other structures are eliminated, thereby saving approximately 30% of the cost and reducing mechanical failures caused by movement, thereby reducing subsequent maintenance costs.

[0031] 2. After abandoning the complex transmission structure, the shooting component 30 adopts a relatively simple unpowered structure to reduce the difficulty of installation and operation for employees.

[0032] 3. The current multiple cameras 32 can simultaneously shoot and stitch images, eliminating the time taken by the camera 32 to slide in the X-axis and Y-axis directions, thereby improving shooting efficiency.

[0033] In a preferred embodiment, reference may be made to Figure 3 The shooting assembly 30 also includes a plurality of vertical plates 33 extending in the X-axis direction. The vertical plates 33 are used to install cameras 32. Multiple cameras 32 can be installed on one vertical plate 33. The cameras 32 can be uniformly fixed on the left or right side of the vertical plate 33. The multiple vertical plates 33 are arranged at intervals along the Y-axis direction. The vertical plates 33 are fixed to the top of the substrate 31. The substrate 31 is provided with a plurality of first through holes 311 for the cameras 32 to shoot.

[0034] Preferably, to facilitate installation of the cameras 32 , the cameras 32 can be uniformly installed above the substrate 31 , that is, the cameras 32 do not extend into the through holes.

[0035] In a preferred embodiment, in order to make the connection between the multiple vertical plates 33 more stable, the shooting assembly 30 also includes connecting plates 34 provided at both axial ends of the vertical plates 33. The connecting plates 34 extend along the Y-axis direction and are fixed to the multiple vertical plates 33.

[0036] Preferably, in order to keep the intervals between the multiple cameras 32 in the Y-axis direction relatively fixed, a connecting tube 35 is provided between two adjacent vertical plates 33 , and the connecting tube 35 is fixed to the vertical plates 33 on both sides by fasteners.

[0037] In a preferred embodiment, in order to reduce the influence of external light, the shooting assembly 30 also includes a first side panel 36, a second side panel 37 and a bottom panel 38. The first side panel 36, the second side panel 37, the bottom panel 38 and the base panel 31 form a box structure, wherein the first side panel 36 is fixed to both ends of the mounting plate in the X-axis direction, the second side panel 37 is fixed to both ends of the mounting plate in the Y-axis direction, and the bottom panel 38 is arranged at intervals on the bottom 51 of the mounting plate. The bottom panel 38 is provided with a plurality of second through holes 381, and the second through holes 381 are opposite to the first through holes 311.

[0038] Preferably, the box body 10 is provided with first openings 51111 at both ends in the X-axis direction for workpiece transmission. The transmission direction of the workpiece transmission component 20 is the X-axis direction. External light can only enter the interior of the box body 10 from the first openings 51111 on both sides. At this time, the shading requirements for the second side panel 37 are relatively low. A plurality of ventilation holes 371 are provided on the second side panel 37 to enhance the heat dissipation effect of the shooting component 30.

[0039] In a preferred embodiment, reference may be made to Figure 2 、 Figure 3 and Figure 4 The inspection device further includes a support assembly for supporting the camera assembly 30. The support assembly includes a plurality of columns 41 and a plurality of third side panels 42. The columns 41 are used to support the camera assembly 30. The third side panels 42 connect two adjacent columns 41 and are located between the workpiece transport assembly 20 and the camera assembly 30. The third side panels 42 enhance stability between the columns 41 and block external light.

[0040] In a preferred embodiment, reference may be made to Figure 5 A crossbeam 50 is also provided on the top of the box body 10. The crossbeam 50 includes a bottom 51 and side portions 52 located on opposite sides of the bottom 51, so that the cross section of the crossbeam 50 is U-shaped, thereby forming a groove structure for accommodating wires. The bottom 51 is provided with a second opening 511, and multiple second openings 511 are spaced apart along the length direction of the bottom 51 to facilitate the passage of wires.

[0041] Preferably, the top of the box 10 includes two beams 50, which extend along the X-axis direction and the Y-axis direction respectively and are arranged crosswise with each other. The structure is simple, convenient for storing wires, and can improve the deformation resistance of the top cover of the box 10.

[0042] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A zero-power SMT online SPI-AOI visual intelligent detection equipment, characterized in that: include: A box body, a workpiece transmission assembly arranged in the box body, and a shooting assembly arranged in the box body and located on the top side of the workpiece transmission assembly; the shooting assembly includes a base plate and a camera fixed to the base plate, and multiple cameras are arranged downward and in an array along the X-axis and Y-axis directions to synchronously shoot the workpiece on the workpiece transmission assembly.

2. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 1 is characterized in that: The shooting assembly also includes a plurality of vertical plates extending in the X-axis direction and used to install the camera. The plurality of vertical plates are arranged at intervals along the Y-axis direction. The vertical plates are fixed on the top of the substrate. The substrate is provided with a plurality of first through holes for the camera to shoot.

3. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 2 is characterized in that: The camera is located above the substrate.

4. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 2 is characterized in that: The shooting assembly further includes connecting plates provided at both axial ends of the vertical plates, wherein the connecting plates extend along the Y-axis direction and are fixed to the plurality of vertical plates.

5. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 4 is characterized in that: A connecting tube is provided between two adjacent vertical plates, and the connecting tube is fixed to the vertical plates on both sides by fasteners.

6. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 2 is characterized in that: The shooting assembly also includes a first side plate fixed to both ends of the mounting plate in the X-axis direction, a second side plate fixed to both ends of the mounting plate in the Y-axis direction, and a bottom plate arranged at intervals at the bottom of the mounting plate; the bottom plate is provided with a plurality of second through holes, and the second through holes are opposite to the first through holes.

7. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 6 is characterized in that: The box body is provided with first openings for workpiece transmission at both ends in the X-axis direction, the transmission direction of the workpiece transmission assembly is the X-axis direction, and the second side panel is provided with a plurality of ventilation holes.

8. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 1 is characterized in that: The detection equipment also includes a support assembly supporting the shooting assembly, the support assembly includes a plurality of columns supporting the shooting assembly, and a third side plate connecting two adjacent columns; the third side plate is located between the workpiece transmission assembly and the shooting assembly.

9. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 1, characterized in that: A crossbeam is further provided on the top of the box body. The crossbeam includes a bottom and side portions located on opposite sides of the bottom. The bottom is provided with a second opening, and a plurality of second openings are spaced apart along the length direction of the bottom.

10. The zero-power SMT online SPI-AOI visual intelligent detection equipment according to claim 9, characterized in that: The top of the box body includes two cross beams, which extend along the X-axis direction and the Y-axis direction respectively and are arranged to cross each other.

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