A desktop visual inspection machine

Abstract

The utility model discloses a desktop visual inspection machine relates to transformer detection technical field, solves the problem of low detection efficiency of small -size transformer artificial detection, and easy to appear misjudgment. It includes: lower rack, be provided with installation platform on the lower rack, the transmission line is set up on the installation platform for and water line butt joint, product positioning mechanism, at least one detection mechanism, the detection mechanism sets up one side of product positioning mechanism, the detection mechanism has camera, transplanting mechanism, transplanting mechanism sets up on the installation platform for the product on transmission line removal and send to product positioning mechanism and unloading. The detection machine solves the problem of low efficiency of artificial detection, and easy to appear wrong detection, the detection problem is improved the detection efficiency of transformer product, and this is full -automatic equipment, save time and labour, satisfy the use demand of lean production, be favorable to large -scale automatic batch production use.

Description

Technical Field

[0001] This utility model relates to the field of transformer testing technology, and in particular to a desktop visual inspection machine. Background Technology

[0002] Small transformers mainly refer to single-phase transformers below 2kVA. They are characterized by their small size, low cost, and minimal wiring requirements. Small transformers generally have lower load rates and utilization rates. The inductive loads they carry are typically not capacitively compensated. Small transformers are a common piece of equipment in factory electrical control systems. With the widespread use of electronic components in power plant control, monitoring, and automatic circuits, the application of small transformers is becoming increasingly extensive.

[0003] After small transformers are manufactured through the winding and soldering assembly process, their production quality needs to be inspected. Currently, most of these inspections are conducted manually by visually inspecting the transformers to determine their qualification. However, prolonged use of the eyes can easily cause eye fatigue, leading to a risk of misjudgment. Furthermore, the dimensional inspection of transformers is usually done manually using measuring tools. This manual material handling method is time-consuming, labor-intensive, and inefficient, failing to meet the requirements of lean manufacturing. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a desktop visual inspection machine, which solves the problems of low efficiency and easy misjudgment in manual inspection of small transformers.

[0005] The technical solution of this utility model to achieve the above objectives is a desktop visual inspection machine, comprising: The lower frame is equipped with an installation platform. A conveyor line, which is mounted on an installation platform for connecting to the assembly line; The product positioning mechanism is located at the end of the conveyor line away from the production line and is used to position the product and control the product rotation. At least one inspection mechanism is provided, which is located on one side of the product positioning mechanism. The inspection mechanism has a camera facing the product positioning mechanism at the position for placing the product, so as to perform visual inspection on the product placed on the product positioning mechanism. A transplanting mechanism, which is set on the installation platform, is used to transfer products on the conveyor line to the product positioning mechanism and to unload them.

[0006] Preferably, there are two detection mechanisms, located on both sides of the product positioning mechanism, with the two cameras facing the two sides of the product positioning mechanism where the product is placed.

[0007] Preferably, a baffle is provided on each side of the upper part of the conveyor line, and a guide channel is formed between the two baffles.

[0008] Preferably, the discharge end of the conveyor line is provided with a stop plate and a centering and positioning mechanism for centering and positioning the product. The centering and positioning mechanism is located between the stop plate and the baffle. The stop plate is provided with a sensor for detecting the product position and a magnet for attracting the product.

[0009] Preferably, the centering and positioning mechanism includes two clamping blocks and two clamping cylinders. The two clamping cylinders can control the two clamping blocks to move towards or away from each other. The two clamping blocks are respectively positioned at the tail ends of the two baffles and between the stop plate and the baffles.

[0010] Preferably, one of the baffles is provided with a pressure plate, one side of which extends directly above the discharge end of the guide channel.

[0011] Preferably, the product positioning mechanism includes a mounting base, a base located above the mounting base, a detachable positioning seat mounted on the base, and a rotary motor for controlling the rotation of the base. The positioning seat has a positioning groove for positioning the product, and the positioning groove is through on both sides in the width direction.

[0012] Preferably, the mounting base is provided with a photoelectric sensor, and a sensing sheet that cooperates with the photoelectric sensor is provided on one side of the base.

[0013] Preferably, the transplanting mechanism includes a transplanting robot and a suction head mounted on the transplanting robot, the lower end of which has a suction port capable of generating negative pressure.

[0014] Preferably, the installation platform is provided with trays for placing qualified products and unqualified products respectively, and the two trays are located on both sides of the transplanting mechanism.

[0015] Its advantages over existing technologies are: In this invention, a vision inspection machine can be connected to a production line for small transformers via a conveyor line. Small transformers on the production line are transferred to the conveyor line, which then transports them to the inspection station, saving time in intermediate steps and streamlining the production and inspection process. Before inspection, a transfer mechanism picks up the product and moves it to a product positioning mechanism. A camera in the inspection mechanism then takes pictures of the product's sides. The product positioning mechanism controls the product's rotation until all four sides have been photographed. The system's built-in algorithm then identifies and analyzes the images, checking for issues such as pin spacing, end face flatness, and the presence of burrs on the pin surfaces. This solves the problems of low efficiency and frequent errors / missed inspections associated with manual inspection, improving the efficiency of transformer product inspection. Furthermore, this is a fully automated system, saving time and labor, meeting the needs of lean manufacturing, and facilitating large-scale automated mass production. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a desktop vision inspection machine; Figure 2 This is a schematic diagram of the transmission line structure; Figure 3 This is a structural schematic diagram of the transmission line from another perspective; Figure 4 This is a top view of the transplanting mechanism; Figure 5 This is a schematic diagram showing the product positioning mechanism and the two testing mechanisms working together; Figure 6 This is a schematic diagram of the product positioning mechanism.

[0017] In the diagram, 1. Lower frame; 2. Conveyor line; 3. Transplanting mechanism; 31. Transplanting robot; 32. Suction head; 4. Product positioning mechanism; 41. Mounting base; 42. Base; 43. Positioning seat; 44. Rotary motor; 45. Sensor plate; 46. Photoelectric sensor; 5. Detection mechanism; 51. Camera; 52. Light source assembly; 6. Platform plate; 7. Support leg; 8. Height adjustment foot; 9. Tray; 10. Baffle; 101. Waist-shaped hole; 11. Slide rail; 12. Centering and positioning mechanism; 121. Clamping cylinder; 122. Clamping block; 13. Stop plate; 14. Sensor; 15. Pressure plate; 16. Transformer product. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] like Figure 1 As shown, a preferred embodiment of this utility model proposes a desktop visual inspection machine, which is mainly used for visual inspection of the appearance of small transformer product 16.

[0020] Specifically, the visual inspection machine mainly consists of a lower frame 1, a platform plate 6, a conveyor line 2, a product positioning mechanism 4, a transplanting mechanism 3, and two inspection mechanisms 5.

[0021] The platform plate 6 is mounted on the lower frame 1, which is located on one side of the bottom of the platform plate 6. Two support legs 7 are mounted on the other side of the bottom of the platform plate 6, and these two support legs 7 are detachable. Height adjustment feet 8 are provided at the bottom of the lower frame 1 and the support legs 7. The height adjustment feet 8 can adjust the horizontal height of the platform plate 6 to adapt to production lines of different heights.

[0022] An installation platform is formed on the flat plate, and the conveyor line 2, product positioning mechanism 4, transplanting mechanism 3 and two testing mechanisms 5 are all installed on the installation platform.

[0023] One end of conveyor line 2 is fixedly mounted on the mounting platform by a support frame, and the other end extends to the outside of the mounting platform so as to connect with the production line for producing small transformers.

[0024] See Figure 2 , Figure 3 Two baffles 10 are installed on conveyor line 2, located on both sides of the conveyor belt, with the bottom surface of the baffles 10 close to the conveyor belt. A guide channel is formed between the two baffles 10. The transformer product 16, which is conveyed from the assembly line, is transferred to conveyor line 2 and enters the guide channel. The width of the guide channel is slightly larger than the size of the transformer. The guide channel mainly guides the conveyance of the transformer product 16 and prevents it from deviating too much from its intended position.

[0025] Multiple oblong holes 101 are provided on each baffle 10, and the multiple oblong holes 101 are evenly distributed along the length direction of the baffle 10. Each oblong hole 101 extends along the width direction of the baffle 10, and a bolt is provided in the oblong hole 101. The baffle 10 is fixed to the conveyor line 2 by the bolt. The distance between two baffles 10 (i.e. the width of the guide channel) can be adjusted by the oblong holes 101 to accommodate transformer products 16 of different sizes.

[0026] At the end of the baffle 10, near the discharge end of the conveyor line, a centering and positioning mechanism 12, a stop plate 13, and a pressure plate 15 are installed. The centering and positioning mechanism 12 consists of two clamping cylinders 121 and two clamping blocks 122. The two clamping cylinders 121 are horizontally placed and positioned opposite each other, fixedly mounted on cylinder supports located on both sides of the conveyor line 2. The two clamping blocks 122 are connected to the output ends of the two clamping cylinders 121 respectively. The two clamping cylinders 121 synchronously control the two clamping blocks to move towards each other, clamping and centering the transformer so that the transplanting mechanism 3 can grasp it.

[0027] The stop plate 13 is horizontally fixed on the upright and spans across the discharge end of the conveyor line 2, serving as a blocking and positioning device. A clamping cylinder 121 is located between the stop plate 13 and the baffle 10. A sensor 14, a proximity sensor, is installed in the middle area of ​​the stop plate 13, facing the material inlet direction, to detect whether a transformer product 16 is approaching the stop plate 13.

[0028] In the middle area of ​​the stop plate 13, a magnet is provided on the side closest to the material receiving direction. When the transformer product 16 approaches the magnet, the magnet will attract the product, which will play a role in initial positioning. Then, the two clamping cylinders 121 control the two clamping blocks 122 to clamp the product for secondary centering and positioning.

[0029] The pressure plate 15 is fixedly mounted on one of the baffles 10 by screws. One side of the pressure plate 15 extends directly above the end of the guide channel. The distance between the pressure plate 15 and the stop plate 13 is sufficient for the placement and removal of a transformer product 16.

[0030] Since the transformer products 16 on the conveyor line 2 are conveyed one after another, when the product reaches the position of the stop plate 13 and is positioned, the two clamping cylinders 121 will release the product. Then the transfer mechanism 3 will pick up the product. The product will be picked up from the area enclosed by the stop plate 13, the two clamping blocks 122 and the pressure plate 15. The pressure plate 15 will press down the products in the rear row to prevent them from tilting up and leaving the conveyor line 2.

[0031] like Figure 4 As shown, the transplanting mechanism 3 consists of a transplanting robot 31 and a suction head 32. The transplanting robot 31 is a multi-axis robot with multiple movable axes used to control the movement of the suction head 32. The suction head 32 is mounted on the transplanting robot 31, with a suction port at its lower end and an external suction mechanism at its upper end. The suction port generates negative pressure, thereby sucking up the transformer product 16, which is then transferred to the product positioning mechanism 4 by the transplanting robot 31.

[0032] The product positioning mechanism 4 is fixedly installed on the installation platform and close to the discharge end of the conveyor line 2.

[0033] See Figure 5 , Figure 6 The positioning mechanism 4 of this product mainly consists of a mounting base 41, a base 42, a positioning seat 43, and a rotary motor 44. The mounting base 41 is fixedly mounted on the mounting platform, and the rotary motor 44 is vertically fixed to the bottom of the mounting base 41. The output shaft of the rotary motor 44 passes through the mounting base 41 and connects to the base 42 above the mounting base 41, controlling the rotation of the base 42. The base 42 has a mounting groove for mounting the positioning seat 43. Both ends of the positioning seat 43 are fixed to the base 42 with screws.

[0034] A positioning groove is located in the middle of the positioning base 43, the size of which is adapted to the size of the transformer product 16. The positioning groove is slightly shallow to expose the four sides of the transformer product 16 for inspection by the inspection mechanism 5. The two inspection mechanisms 5 are located on both sides of the product positioning mechanism 4, and the sides of the positioning groove closest to the two inspection mechanisms 5 (i.e., the sides in the width direction of the positioning base 43) are open to expose the pins of the transformer product 16 to the field of view of the inspection mechanism 5.

[0035] Before testing, the transplanting mechanism 3 will pick up the transformer product 16 and place it into the positioning groove on the positioning seat 43.

[0036] A sensing element 45 is provided on one side of the base 42, and the sensing element 45 is fixed to the side of the base 42 by screws. Meanwhile, a photoelectric sensor 1446 is provided on the top of the mounting base 41, and the sensing area of ​​the photoelectric sensor 1446 is located on the rotation path of the sensing element 45. After the two detection mechanisms 5 have completed the detection of two opposite sides of the transformer product 16, the rotary motor 44 will control the product to rotate 90° so that the two detection mechanisms 5 can detect the other two sides of the product. The photoelectric sensor 1446 and the sensing element 45 work together to detect the rotation angle of the product and whether the product has rotated to the correct position.

[0037] See Figure 5 The two testing institutions 5 are identical in structure and are positioned opposite each other, with the product positioning mechanism 4 located between the two testing institutions 5.

[0038] The inspection mechanism 5 consists of a camera 51 and a light source assembly 52. ​​The camera 51 is horizontally fixed to a camera 51 bracket, which is horizontally slidably connected to a slide rail 11 fixed to a mounting platform via a slider. The light source assembly 52 is also horizontally slidably connected to the slide rail 11 via a slider. The light source assembly 52 provides supplemental lighting for the transformer product 16 so that the camera 51 can clearly capture the appearance of the transformer product 16. The camera 51 can be focused by moving the camera 51 and the light source assembly 52.

[0039] Two cameras 51 photograph both sides of the transformer product 16 with pins, and the system's algorithm automatically identifies whether the spacing and dimensions between the pins on the transformer product 16 are up to standard, whether the pin ends are flush, whether there are burrs on the pin surface, and whether there is any damage to the product surface, etc., with an inspection accuracy within 0.01mm. After the two sides of the transformer product 16 with pins are inspected, the rotary motor 44 controls the product to rotate 90°, and then the cameras 51 inspect the appearance of the other two sides of the product. After the inspection is completed, the transfer mechanism 3 unloads the product, and then the transfer mechanism 3 performs the above operations to load the product.

[0040] See Figure 1 On the installation platform, there is a tray 9 on each side of the transplanting mechanism 3, used for loading qualified and unqualified products respectively. After the inspection is completed, the system will automatically determine whether the product is qualified. Qualified products will be picked up by the transplanting mechanism 3 and placed into the tray 9 for qualified products and stacked neatly; unqualified products will be picked up by the transplanting mechanism 3 and placed into the tray 9 for unqualified products and stacked neatly. When the tray 9 is full, it is manually unloaded and an empty tray 9 is placed in its place.

[0041] Since the lower frame 1 is located on one side of the bottom of the platform plate 6, the other side of the bottom of the platform plate 6 is an empty area. When connecting the conveyor line 2 to the production line, the support leg 7 needs to be disassembled and unloaded first, so that the side of the platform plate 6 away from the lower support rests on the production line. Then, the conveyor line 2 can be connected to the discharge end of the production line.

[0042] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A desktop vision inspection machine, characterized in that, include: The lower frame (1) is provided with an installation platform; Conveyor line (2), which is set on the installation platform for docking with the assembly line; Product positioning mechanism (4), the product positioning mechanism (4) is set at one end of the conveyor line (2) away from the production line, and is used to position the product and control the product rotation; At least one inspection mechanism (5) is provided on one side of the product positioning mechanism (4). The inspection mechanism (5) has a camera (51) facing the product positioning mechanism (4) at the position for placing the product, so as to perform visual inspection on the product placed on the product positioning mechanism (4). The transplanting mechanism (3) is set on the installation platform and is used to transfer the products on the conveyor line (2) to the product positioning mechanism (4) and to unload the products.

2. The desktop vision inspection machine according to claim 1, characterized in that, The detection mechanism (5) is provided in two parts, located on both sides of the product positioning mechanism (4), with two cameras (51) facing the two sides of the product positioning mechanism (4) where the product is placed.

3. The desktop vision inspection machine according to claim 1, characterized in that, A baffle (10) is provided on each side of the upper part of the conveyor line (2), and a guide channel is formed between the two baffles (10).

4. The desktop vision inspection machine according to claim 3, characterized in that, The discharge end of the conveyor line (2) is provided with a stop plate (13) and a centering and positioning mechanism (12) for centering and positioning the product. The centering and positioning mechanism (12) is located between the stop plate (13) and the baffle (10). The stop plate (13) is provided with a sensor (14) for detecting the product position and a magnet for adsorbing the product.

5. The desktop vision inspection machine according to claim 4, characterized in that, The centering and positioning mechanism (12) includes two clamping blocks (122) and two clamping cylinders (121). The two clamping cylinders (121) can control the two clamping blocks (122) to move towards each other or away from each other. The two clamping blocks (122) are respectively located between the tail ends of the two baffles (10) and the stop plate (13) and the baffles (10).

6. The desktop vision inspection machine according to claim 5, characterized in that, One of the baffles (10) is provided with a pressure plate (15), one side of which extends to directly above the discharge end of the guide channel.

7. The desktop vision inspection machine according to claim 1, characterized in that, The product positioning mechanism (4) includes a mounting base (41), a base (42) located above the mounting base (41), a positioning seat (43) detachably mounted on the base (42), and a rotary motor (44) for controlling the rotation of the base (42). The positioning seat (43) has a positioning groove for positioning the product, and the two sides of the positioning groove are through in the width direction.

8. The desktop vision inspection machine according to claim 7, characterized in that, A photoelectric sensor (46) is provided on the mounting base (41), and a sensing sheet (45) that cooperates with the photoelectric sensor (46) is provided on one side of the base (42).

9. The desktop vision inspection machine according to claim 1, characterized in that, The transplanting mechanism (3) includes a transplanting robot (31) and a suction head (32) mounted on the transplanting robot (31), the lower end of which has a suction port capable of generating negative pressure.

10. The desktop vision inspection machine according to claim 1, characterized in that, The installation platform is provided with trays (9) for placing qualified products and unqualified products respectively, and the two trays (9) are located on both sides of the transplanting mechanism (3).

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