Automatic weighing and visual inspection device
By integrating weighing and visual inspection stations, combined with handling devices and automatic feeding, the problem of low parts inspection efficiency is solved, achieving an efficient, stable, and automated inspection process and reducing the risk of product damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN DONGCAI PRECISION HARDWARE CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, the separate operation of part weighing and visual inspection results in low inspection efficiency, increased process and time costs, and multiple transfers increase the risk of handling errors and product damage.
Design an automatic weighing and visual inspection device that integrates weighing and visual inspection stations into one unit. Use a conveying device to realize the synchronous movement of workpieces between multiple stations. Combine vibratory feeder feeding and cylinder control to achieve automated feeding and defective product collection.
It improves testing efficiency, reduces testing time and process costs, lowers the risk of handling errors and product damage, ensures product quality stability, and has automation and energy-saving functions.
Smart Images
Figure CN224253579U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial automation technology, and in particular to an automatic weighing and visual inspection device. Background Technology
[0002] In modern manufacturing, controlling the quality of parts is crucial, and weighing and visual inspection are important means to ensure this. Currently, existing technologies typically separate the weighing and visual inspection processes. This separate inspection method has several drawbacks: on the one hand, it increases the inspection process and time costs, prolongs the cycle from part completion to quality assessment, reduces production efficiency, and is not conducive to the needs of large-scale, high-efficiency production; on the other hand, repeatedly transferring parts for different inspections may introduce additional handling errors, increase the risk of part damage, and affect product quality stability.
[0003] With the increasing demands for production efficiency and product quality in the manufacturing industry, there is an urgent need for a technical solution that can optimize the inspection process and improve inspection efficiency. The automatic weighing and visual inspection device provided in this application aims to overcome the shortcomings of existing technologies. Through innovative design, it achieves simultaneous weighing and visual inspection, reducing inspection time and procedures, improving production efficiency, and mitigating potential risks to products during the inspection process. This provides a more efficient and reliable solution for quality inspection in the manufacturing industry. Utility Model Content
[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an automatic weighing and visual inspection device, which aims to solve the technical problem of low inspection efficiency caused by the step-by-step operation of part weighing and visual inspection in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An automatic weighing and visual inspection device includes a frame with a loading station, a weighing station, a visual inspection station, and a unloading station, all with equal spacing between any two adjacent stations. A weighing sensor is installed at the weighing station, and a visual inspection module is installed at the visual inspection station. A support is mounted on the frame, and a conveying device is mounted on the support. The conveying device includes a nozzle frame, three nozzles mounted on the nozzle frame, and a drive device for driving the nozzle frame to move vertically and horizontally.
[0007] Furthermore, in the aforementioned automatic weighing and visual inspection device, the driving device includes a horizontal slide rail, a horizontal sliding plate slidably connected to the horizontal slide rail, a vertical slide rail slidably connected to the horizontal sliding plate, and a motor; the main shaft of the motor is provided with a crank, the crank is rotatably connected to a connecting rod, and the connecting rod is connected to the vertical slide rail; the suction nozzle bracket is connected to the vertical slide rail.
[0008] Furthermore, in the aforementioned automatic weighing and visual inspection device, the drive unit is provided with two horizontal slide rails, each of which is slidably connected to a horizontal sliding plate; the drive unit is provided with two vertical slide rails, each of which is connected to two horizontal sliding plates.
[0009] Furthermore, in the aforementioned automatic weighing and visual inspection device, the visual inspection module includes a visual inspection camera module and a backlight arranged opposite to each other. The visual inspection camera module includes a housing, an industrial camera disposed within the housing, and a motherboard.
[0010] Furthermore, in the aforementioned automatic weighing and visual inspection device, the unloading station is equipped with a unloading trough, a first cylinder, a good product collection box located at the outlet end of the unloading trough, and a defective product collection box located below the unloading trough; the first cylinder is used to drive the unloading trough to move back and forth in the horizontal direction.
[0011] Furthermore, in the aforementioned automatic weighing and visual inspection device, a tray and a second cylinder are provided at the unloading station to drive the tray to reciprocate in the horizontal direction; two defective product collection boxes are provided, and the two defective product collection boxes are placed on the tray.
[0012] Furthermore, the automatic weighing and visual inspection device further includes a vibratory feeder, the discharge track of which is connected to the feeding station.
[0013] Furthermore, in the aforementioned automatic weighing and visual inspection device, a photoelectric sensor is installed at the material loading station.
[0014] Beneficial effects: This utility model provides an automatic weighing and visual inspection device, which has at least the following advantages compared with the prior art:
[0015] Improved inspection efficiency: By integrating the loading, weighing, visual inspection, and unloading stations into one unit with equal spacing between adjacent stations, and using a handling device to transport three workpieces at a time, multiple processes can be carried out simultaneously, greatly shortening the cycle from part completion to quality assessment. Compared to traditional separate inspection methods, this reduces inspection procedures and time costs, effectively improving production efficiency and meeting the needs of large-scale, high-efficiency production.
[0016] Improving inspection accuracy and product quality stability: This device reduces handling errors caused by multiple part transfers, lowering the risk of damage to parts during inspection. Furthermore, the visual inspection module and weighing sensor work together to more comprehensively and accurately inspect part quality, ensuring product quality stability.
[0017] With a reasonable structural design and stable operation, the drive unit adopts a combination of horizontal slide rails, vertical slide rails, cranks and connecting rods. The arrangement of two horizontal slide rails, two horizontal sliding plates and two vertical slide rails makes the suction nozzle frame move more stably in both horizontal and vertical directions, ensuring that the workpiece can be accurately transferred to each station and guaranteeing the smooth progress of the inspection process.
[0018] Featuring automatic feeding and energy-saving functions: The vibratory feeder enables automatic feeding, freeing up manpower and further enhancing the level of automation. The photoelectric sensor at the feeding station controls the drive device's operation based on the presence or absence of workpieces, preventing the equipment from running idle when there are no workpieces and achieving energy savings.
[0019] Facilitates defective product collection and handling: The unloading station is equipped with a horizontally movable unloading chute, a good product collection box, and a defective product collection box, making it easy to distinguish between good and defective products. Additionally, it is equipped with a second cylinder and a tray, allowing for replacement of the defective product collection box without stopping the machine, thus improving production continuity and convenience. Attached Figure Description
[0020] Figure 1 Three-dimensional for automatic weighing and visual inspection devices Figure 1 .
[0021] Figure 2 Three-dimensional for automatic weighing and visual inspection devices Figure 2 .
[0022] Figure 3 Three-dimensional diagrams of the structures of the first, second, third, and fourth workstations.
[0023] Figure 4 for Figure 3 A magnified view of a portion of the S-region.
[0024] Figure 5 The main view of each structure at the first, second, third, and fourth workstations.
[0025] Figure 6 Three-dimensional for transport device Figure 1 .
[0026] Figure 7 Three-dimensional for transport device Figure 2 .
[0027] Numbering on the map:
[0028] 10. Supports for the material loading station;
[0029] 20. Supports for the weighing station;
[0030] 30. Support for the visual inspection station; 31. Visual inspection camera module; 32. Backlight;
[0031] 41. First cylinder; 42. Feed chute; 43. Good product collection box; 44. Second cylinder; 450. Tray; 451 and 452. Defective product collection box;
[0032] 5. Handling device; 51. Drive device; 511. Motor; 512. Crank; 513. Connecting rod; 514. Vertical slide rail; 515. Horizontal slide plate; 516. Horizontal slide rail; 52. Suction nozzle holder; 53. Suction nozzle;
[0033] 8. Vibratory feeder feeding device; 81. Discharge track of vibratory feeder feeding device;
[0034] 91. Machine frame; 911. Support plate on the machine frame; 92. Bracket; 99. Workpiece. Detailed Implementation
[0035] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.
[0036] Please see Figures 1 to 7 This invention provides an automatic weighing and visual inspection device. To facilitate observation of the internal structure, Figure 2 The top cover of the vibratory feeder, the top plate of the frame, and the four side plates are not shown.
[0037] The accompanying drawings are for illustrative purposes only and are not proportional to actual products. The drawings only depict structures relevant to the utility model of this application; some conventional structures are not specifically shown. The terms "first," "second," etc., used herein are merely different names for similar structures for ease of explanation and are not intended to limit this application.
[0038] Please refer to the following first. Figures 1 to 5 The automatic weighing and visual inspection device includes a frame 91, on which are arranged a loading station A, a weighing station B, a visual inspection station C, and a unloading station D (e.g., ...). Figure 5 As shown in the figure, the interval between any two adjacent workstations is equal; a weighing sensor is installed at the weighing workstation (not visible in the figure), and a vision inspection module is installed at the vision inspection workstation; a support 92 is installed on the frame, and a conveying device 5 is installed on the support. The conveying device includes a nozzle frame 52, three nozzles 53 installed on the nozzle frame, and a drive device 51 for driving the nozzle frame to move vertically and horizontally.
[0039] As can be seen from the attached diagram, the loading station, weighing station, and visual inspection station are each equipped with a support (labeled 10, 20, and 30), with grooves on the supports for placing workpieces. The aforementioned weighing sensors are located inside their corresponding supports 20 and are not directly observable. The aforementioned suction nozzles are connected to a vacuum pump (not shown in the diagram), and the suction nozzles pick up and release workpieces by controlling the vacuum flow.
[0040] A support plate 911 is horizontally mounted on the frame, and the supports and vision inspection modules of each workstation are mounted on this support plate.
[0041] The three suction nozzles are set at equal intervals so that the workpiece can be accurately placed at the next station each time it is moved.
[0042] As mentioned above, the interval between any two adjacent stations in the loading station, weighing station, vision inspection station, and unloading station is equal. This allows the drive device to simultaneously move the workpiece from the loading station to the weighing station, the workpiece from the weighing station to the vision inspection station, and the workpiece from the vision inspection station to the unloading station each time it moves the nozzle frame and nozzle to transfer materials. In other words, it moves three workpieces at once, allowing all three workpieces to be transferred to the next station at the same time.
[0043] Please see Figure 6 and Figure 7 Furthermore, the driving device 51 includes a horizontal slide rail 516, a horizontal sliding plate 515 slidably connected to the horizontal slide rail, a vertical slide rail 514 slidably connected to the horizontal sliding plate, and a motor 511; the main shaft of the motor is provided with a crank 512, the crank being rotatably connected to a connecting rod 513, the connecting rod being connected to the vertical slide rail; the suction nozzle bracket is connected to the vertical slide rail. The aforementioned sliding connection is preferably a slide rail-slider connection.
[0044] The rotation of the motor drives the crank to rotate. Because the crank and the connecting rod are rotatably connected, the connecting rod will displace in both the horizontal and vertical directions. The vertical displacement of the connecting rod is achieved by the vertical slide rail moving vertically relative to the horizontal slide plate, while the horizontal displacement is achieved by the horizontal slide plate moving horizontally relative to the horizontal slide rail. Since the vertical slide rail is mounted on the horizontal slide plate, its movement trajectory actually includes both vertical and horizontal displacement. Because the vertical slide rail is connected to the nozzle holder, the nozzle holder and nozzle can also move vertically and horizontally, ultimately achieving the transfer of the workpiece.
[0045] Preferably, the drive device 51 is provided with two horizontal slide rails 516, each with a horizontal sliding plate 515 slidably connected to it; the drive device is also provided with two vertical slide rails 514, each connected to one of the two horizontal sliding plates. Correspondingly, the suction nozzle holder is connected to the bottom end of the two vertical slide rails. By providing two horizontal slide rails, two horizontal sliding plates, and two vertical slide rails, the suction nozzle holder becomes more stable during horizontal and vertical movement, ensuring that the workpiece is accurately transferred to the next workstation.
[0046] like Figure 3 As shown, the vision inspection module further includes a vision inspection camera module 31 and a backlight 32 disposed opposite to each other. The vision inspection camera module includes a housing, an industrial camera disposed inside the housing, and a motherboard (the internal structure of the housing is not visually observable in the attached figure). Since the vision inspection module itself is prior art, and this application does not aim to propose a new vision inspection module, the specific structure of the vision inspection module will not be described in detail here.
[0047] like Figure 3 and Figure 5 As shown, the unloading station is further equipped with an unloading trough 42, a first cylinder 41, a good product collection box 43 located at the outlet of the unloading trough, and a defective product collection box located below the unloading trough (two defective product collection boxes 451 and 452 are shown in the figure). The first cylinder is used to drive the unloading trough to move back and forth in the horizontal direction. The first cylinder 41 is mounted on the bracket 92. Since the unloading trough is located above the defective product collection box, under normal circumstances, after the workpiece at the unloading station is released by the corresponding suction nozzle, the workpiece will fall into the unloading trough and then enter the good product collection box. If the workpiece at the unloading station is determined to be defective (weight and / or visual inspection failure), the first cylinder drives the unloading trough to move horizontally, the unloading trough no longer blocks the top of the defective product collection box, and after the suction nozzle at the unloading station releases the workpiece, the workpiece will fall into the defective product collection box.
[0048] To allow for seamless replacement of the defective collection box without shutting down the machine when it is full, the following configuration can be implemented: a tray and a second cylinder are installed at the unloading station to drive the tray in a horizontal reciprocating motion; two defective collection boxes (451 and 452) are provided and mounted on the tray 450. When one of the defective collection boxes (e.g., 451) is full, the second cylinder actuates, causing the tray to move horizontally, moving the previously spare defective collection box (e.g., 452) to the unloading station (directly below the corresponding suction nozzle). The operator removes the full defective collection box and places an empty one in as a spare. This process is repeated, ensuring that one defective collection box is always used to collect defective products while the other remains in standby mode, thus enabling seamless replacement of the defective collection box without shutting down the machine.
[0049] Furthermore, to achieve automatic feeding, a vibratory feeder feeding device 8 can be installed, with its discharge track 81 connected to the feeding station. Workpieces are poured into the vibratory feeder, and as the device vibrates, they are transported one by one to the feeding station via the discharge track. Since the vibratory feeder feeding device itself is existing technology, its specific structure will not be described in detail here.
[0050] Furthermore, a photoelectric sensor (not shown in the figure) is installed at the loading station. When the photoelectric sensor detects a workpiece at the loading station, the drive device operates normally; when the photoelectric sensor does not detect a workpiece at the loading station, the drive device does not operate, thereby achieving energy saving.
[0051] For ease of understanding, the working process is briefly described below: The workpiece to be inspected is placed into the vibratory feeder. As the vibratory feeder vibrates, the workpieces enter the loading station one by one from the discharge track. The drive device drives the suction nozzle frame to simultaneously transfer three workpieces (one each from the loading station, weighing station, and visual inspection station) to the next station and release them. If the workpiece transferred to the unloading station is a good product, it falls into the unloading chute and then enters the good product collection box; if the workpiece transferred to the unloading station is a defective product (at least one of the weighing and visual inspection is unqualified), the first cylinder drives the unloading chute to move horizontally, causing the workpiece to fall into the defective product collection box. Then, the first cylinder drives the unloading chute to move horizontally back to its original position (above the defective product collection box).
[0052] It should be noted that in practical applications, to achieve automated control, the automatic weighing and visual inspection device is typically equipped with a PLC (Programmable Logic Controller). The vibratory feeder 8, photoelectric sensor, weighing sensor, motor 511, first cylinder 41, second cylinder 44, and other structures are electrically connected to the PLC to facilitate automatic control of the automatic weighing and visual inspection device via the PLC. Since the inventive point of this application lies in the structure of the automatic weighing and visual inspection device itself, and not in proposing a new PLC or PLC program, no specific description or limitation of the PLC is provided.
[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and inventive concept of the present utility model, and all such modifications or substitutions should fall within the protection scope of the present utility model.
Claims
1. An automatic weighing and visual inspection device, comprising a frame, characterized in that: The frame is equipped with a loading station, a weighing station, a vision inspection station, and an unloading station, with equal spacing between any two adjacent stations. A weighing sensor is installed at the weighing station, and a vision inspection module is installed at the vision inspection station. A support is installed on the frame, and a conveying device is installed on the support. The conveying device includes a nozzle frame, three nozzles installed on the nozzle frame, and a drive device for driving the nozzle frame to move vertically and horizontally.
2. The automatic weighing and visual inspection device according to claim 1, characterized in that: The driving device includes a horizontal slide rail, a horizontal sliding plate slidably connected to the horizontal slide rail, a vertical slide rail slidably connected to the horizontal sliding plate, and a motor; the main shaft of the motor is provided with a crank, the crank is rotatably connected to a connecting rod, and the connecting rod is connected to the vertical slide rail; the suction nozzle bracket is connected to the vertical slide rail.
3. The automatic weighing and visual inspection device according to claim 2, characterized in that: The drive unit has two horizontal slide rails, each with a horizontal slide plate slidably connected to it; the drive unit also has two vertical slide rails, each connected to two horizontal slide plates.
4. The automatic weighing and visual inspection device according to claim 1, characterized in that: The vision inspection module includes a vision inspection camera module and a backlight arranged opposite to each other. The vision inspection camera module includes a housing, an industrial camera and a motherboard arranged inside the housing.
5. The automatic weighing and visual inspection device according to claim 1, characterized in that: The unloading station is equipped with an unloading trough, a first cylinder, a good product collection box located at the outlet of the unloading trough, and a defective product collection box located below the unloading trough; the first cylinder is used to drive the unloading trough to move back and forth in the horizontal direction.
6. The automatic weighing and visual inspection device according to claim 5, characterized in that: A tray and a second cylinder are provided at the unloading station to drive the tray to reciprocate in the horizontal direction; there are two defective product collection boxes, which are placed on the tray.
7. The automatic weighing and visual inspection device according to claim 1, characterized in that: The automatic weighing and visual inspection device also includes a vibratory feeder, the discharge track of which is connected to the feeding station.
8. The automatic weighing and visual inspection device according to claim 1, characterized in that: A photoelectric sensor is installed at the material loading station.