A positioning fixture for a vision inspection system for volute casings

Abstract

This invention provides a positioning fixture for a vision inspection system for volute casings, including a conveyor belt for transporting volute casings and a rotating positioning frame. The positioning frame has a hollow structure so that the conveyor belt passes through the hollow area of ​​the positioning frame. The positioning frame includes a positioning part with an arc-shaped structure and a driving part arranged in a straight line. A positioning block is movably disposed at the positioning part. The positioning block is used to position the inspection piece, so that the positioning block moves along the positioning part and rotates in conjunction with the positioning frame, thereby driving the inspection piece to inspect the volute casing on the conveyor belt from various angles. This invention can improve the viewing angle flexibility of the vision inspection piece in the volute casing processing production line and avoid the situation where a fixed viewing angle cannot fully observe the processing status of the volute casing.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing, and in particular to a positioning fixture for a vision inspection system for a volute. Background Technology

[0002] A volute is a structure in automotive components with a spiral internal cavity. It is mainly used to guide fluids (such as exhaust gas, air, or coolant) and optimize their flow efficiency. It is commonly found in key components such as turbocharging systems, electric water pumps, and air conditioning compressors, and is an important component for improving vehicle performance and reliability.

[0003] Currently, during the processing of volute casings, a vision inspection system is typically used to automatically inspect their surface quality, dimensional accuracy, and key structural features to ensure that the product meets process standards. However, due to the large curved surface features on the exterior of the volute casing, traditional fixed vision inspection devices cannot fully cover its surface, easily resulting in blind spots. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for a volute vision inspection system that can improve the viewing angle flexibility of visual inspection components in a volute processing production line and avoid the inability to fully observe the volute processing status from a fixed viewing angle.

[0005] To solve the above-mentioned technical problems, this utility model provides a positioning fixture for a vision inspection system for volute housings, including a conveyor belt for transporting volute housings and a rotatably arranged positioning frame. The positioning frame has a hollow structure so that the conveyor belt passes through the hollow area of ​​the positioning frame. The positioning frame includes a positioning part with an arc-shaped structure and a driving part arranged in a straight line. A positioning block is movably arranged at the positioning part. The positioning block is used to position the inspection piece so that the positioning block moves along the positioning part and rotates in coordination with the positioning frame, thereby driving the inspection piece to inspect the volute housing on the conveyor belt from various angles.

[0006] Furthermore, the positioning part has a sliding groove inside, and a slider is slidably arranged in the sliding groove. The positioning block is fixedly connected to the slider, and at least two clamping plates are arranged opposite each other on the side of the positioning block facing the conveyor belt.

[0007] Furthermore, the driving unit includes driving tubes disposed opposite to the two ends of the positioning unit. The driving tubes have a transmission cavity that communicates with the slide groove. The two ends of the driving rod are movably connected to the two driving tubes respectively. The slide groove and the transmission cavity carry a liquid medium so that when the driving rod moves relative to the driving tube, the positioning block moves relative to the positioning unit.

[0008] Furthermore, a drive shaft is rotatably mounted on the side of the drive rod, and guide strips are spirally arranged on the outer circumference of the drive shaft. A drive wheel matching the guide strips is also provided on the outer circumference of the drive rod, so that when the drive shaft rotates, the guide strips drive the drive rod to move along the transmission cavity.

[0009] Furthermore, a first driving member and a first positioning bearing are respectively connected to both ends of the transmission shaft, so that the first driving member drives the transmission shaft to rotate.

[0010] Furthermore, an annular groove is provided on the outer periphery of the drive tube, and a clamp is engaged in the annular groove, with the clamp and the drive tube being in a rotatable fit.

[0011] Furthermore, a second driving component and a second positioning bearing are respectively connected to both sides of the positioning frame, so that the second driving component drives the positioning frame to rotate.

[0012] Furthermore, a wire groove is provided through the inside of the positioning block, extending from the side of the positioning block facing the conveyor belt to the side of the positioning block away from the conveyor belt, for accommodating the wiring of the detection piece.

[0013] The beneficial effects of this utility model are as follows: After the initial processing of the volute is completed, the volute is transported from the processing equipment to the vision inspection station by a conveyor belt. At this time, the rotation of the positioning frame and the movement of the positioning block along the arc-shaped positioning part enable the inspection piece to continuously scan the appearance of the volute from multiple angles, thereby improving the inspection coverage and accuracy. In addition, the arc-shaped positioning frame can improve the inspection adaptability to the external curved surface of the volute, so that the inspection piece can maintain focus to the greatest extent when running along the curved surface trajectory of the volute. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the positioning part and the driving part in this utility model.

[0016] Figure 3 This is a side view of the present invention.

[0017] Figure 4 This is a utility model Figure 3 Cross-sectional view along line AA.

[0018] Reference numerals: 1. Conveyor belt; 2. Positioning frame; 3. Positioning part; 4. Drive part; 5. Positioning block; 6. Slide groove; 7. Slider; 8. Clamping plate; 9. Drive tube; 10. Transmission cavity; 11. Drive rod; 12. Transmission shaft; 13. Guide bar; 14. Transmission wheel; 15. First drive component; 16. First positioning bearing; 17. Annular groove; 18. Clamp; 19. Second drive component; 20. Second positioning bearing; 21. Wire groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0020] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0021] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0022] like Figures 1-4 The present invention provides a positioning fixture for a vision inspection system for a volute, including a conveyor belt 1 for conveying the volute and a rotatably arranged positioning frame 2. The positioning frame 2 has a hollow structure so that the conveyor belt 1 passes through the hollow area of ​​the positioning frame 2. The positioning frame 2 includes a positioning part 3 with an arc-shaped structure and a driving part 4 arranged in a straight line. A positioning block 5 is movably arranged at the positioning part 3. The positioning block 5 is used to position the inspection piece so that the positioning block 5 moves along the positioning part 3 and rotates in coordination with the positioning frame 2, thereby driving the inspection piece to inspect the volute on the conveyor belt 1 from various angles.

[0023] After the initial processing of the volute is completed, the volute is transferred from the processing equipment to the vision inspection station via conveyor belt 1. At this time, the rotation of the positioning frame 2 and the movement of the positioning block 5 along the arc-shaped positioning part 3 enable the inspection piece to continuously scan the appearance of the volute from multiple angles, improving the inspection coverage and accuracy. In addition, the arc-shaped positioning frame 2 can improve the inspection adaptability to the external curved surface of the volute, so that the inspection piece can maintain focus to the greatest extent when running along the curved surface trajectory of the volute.

[0024] In one embodiment of this solution, the positioning part 3 is arranged in a C-shape, and the detection component is a camera, sensor, etc. in a visual inspection system.

[0025] Preferably, the positioning part 3 has a groove 6 inside, a slider 7 is slidably arranged in the groove 6, the positioning block 5 is fixedly connected to the slider 7, and at least two clamping plates 8 are arranged opposite each other on the side of the positioning block 5 facing the conveyor belt 1.

[0026] Specifically, the slider 7 moves along the slide groove 6, causing the positioning block 5 and the clamping plate 8 to move along an arc-shaped trajectory. The clamping plate 8 then clamps and fixes the test piece, ensuring that the test piece maintains a stable posture during movement and preventing shaking that could lead to blurred imaging or detection deviation.

[0027] The clamping plate has several clamping holes at 8 locations, and the two sides of the test piece are clamped and fixed by screwing in the tightening bolts.

[0028] Preferably, the driving part 4 includes driving tubes 9 disposed opposite to the two ends of the positioning part 3. The driving tubes 9 have a transmission cavity 10 that communicates with the slide groove 6. The two ends of the driving rod 11 are respectively movably connected to the two driving tubes 9. The slide groove 6 and the transmission cavity 10 carry liquid medium so that when the driving rod 11 moves relative to the driving tube 9, the positioning block 5 moves relative to the positioning part 3.

[0029] Specifically, when the slider 7 moves along the slide groove 6, the reciprocating motion of the drive rod 11 in the drive tube 9 drives the liquid medium to flow, so that the liquid medium pushes the slider 7 and drives the positioning block 5 to move stably along the arc trajectory, realizing the precise displacement of the detection piece; the incompressibility of the liquid medium ensures that there is no backlash delay in the transmission process, improving the response speed and positioning accuracy.

[0030] The movable connection between the transmission cavity 10 and the drive rod 11 is sealed so that the liquid medium will not leak from the connection when the drive rod 11 moves relative to the transmission cavity 10.

[0031] Preferably, the drive rod 11 is rotatably provided with a transmission shaft 12, the outer periphery of the transmission shaft 12 is spirally provided with guide strips 13, and the outer periphery of the drive rod 11 is provided with a transmission wheel 14 that matches the guide strips 13, so that when the transmission shaft 12 rotates, the guide strips 13 drive the drive rod 11 to move along the transmission cavity 10.

[0032] Specifically, the rotation of the drive shaft 12 causes the spirally arranged guide bar 13 to rotate synchronously, thereby driving the drive wheel 14 to move along the spiral trajectory of the guide bar 13, thus driving the drive rod 11 to move smoothly back and forth in the drive tube 9, achieving continuous pushing of the liquid medium; and the way the drive wheel 14 is arranged along the outer periphery of the drive rod 11 ensures that if the positioning frame 2 rotates and there is a tendency to drive the drive rod 11 to rotate, the axial transmission stability can still be maintained through the meshing of the guide bar 13 and the drive wheel 14.

[0033] Preferably, the two ends of the drive shaft 12 are respectively connected to a first driving member 15 and a first positioning bearing 16, so that the first driving member 15 drives the drive shaft 12 to rotate.

[0034] Specifically, the output end of the first driving component 15 is connected to one end of the transmission shaft 12 to drive the transmission shaft 12 to rotate. The first positioning bearing 16 is located at the other end of the transmission shaft 12 to support and stabilize the rotational movement of the transmission shaft 12, ensuring the coaxiality and transmission accuracy of the guide bar 13 and the transmission wheel 14 during the meshing process.

[0035] The first driving component 15 can be a motor.

[0036] Preferably, the drive tube 9 has an annular groove 17 on its outer periphery, and the clamp 18 is engaged in the annular groove 17, with the clamp 18 and the drive tube 9 in a rotatable fit.

[0037] Specifically, when the positioning frame 2 rotates, the circumferential limit of the drive tube 9 is achieved through the cooperation of the clamp 18 and the annular groove 17, thereby improving the overall rotation stability of the positioning frame 2. Furthermore, the clamp 18 structure facilitates the disassembly of the clamp 18 position, making it convenient for maintenance of the positioning frame 2 and other structures.

[0038] Preferably, the positioning frame 2 is connected to a second driving member 19 and a second positioning bearing 20 on both sides, so that the second driving member 19 drives the positioning frame 2 to rotate.

[0039] Specifically, the output end of the second drive component 19 is connected to one end of the positioning frame 2 to drive the positioning frame 2 to rotate around the central axis of the drive unit 4, and the second positioning bearing 20 is located at the other end of the positioning frame 2 to support its rotational movement and ensure rotational coaxiality.

[0040] Preferably, a wire groove 21 is provided inside the positioning block 5. The wire groove 21 extends from the side of the positioning block 5 facing the conveyor belt 1 to the side of the positioning block 5 away from the conveyor belt 1, and is used to accommodate the wiring of the detection piece.

[0041] Specifically, after the detection component is installed at the positioning block 5, the cable connected to the detection component for transmitting signals, power supply, etc., can be laid out through the wire channel 21 and led out to the side away from the conveyor belt 1, so that the cable can be smoothly connected to external control or display equipment, and the cable can be prevented from being squeezed or tangled during the operation of the conveyor belt 1.

[0042] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A positioning jig for a visual inspection system of a volute, characterized by: The device includes a conveyor belt (1) for conveying the volute and a rotating positioning frame (2). The positioning frame (2) has a hollow structure so that the conveyor belt (1) passes through the hollow area of ​​the positioning frame (2). The positioning frame (2) includes a positioning part (3) with an arc-shaped structure and a driving part (4) arranged in a straight line. A positioning block (5) is movably arranged at the positioning part (3). The positioning block (5) is used to position the detection piece so that the positioning block (5) moves along the positioning part (3) and rotates in coordination with the positioning frame (2), thereby driving the detection piece to detect the volute on the conveyor belt (1) from various angles.

2. The positioning fixture of the vision inspection system for a volute casing according to claim 1, characterized in that: The positioning part (3) has a groove (6) inside, and a slider (7) is slidably arranged in the groove (6). The positioning block (5) is fixedly connected to the slider (7), and at least two clamping plates (8) are arranged opposite to each other on the side of the positioning block (5) facing the conveyor belt (1).

3. The positioning fixture of the vision inspection system for volute casing according to claim 2, characterized in that: The driving part (4) includes driving tubes (9) disposed opposite to the two ends of the positioning part (3). The driving tubes (9) have a transmission cavity (10) connected to the slide groove (6). The two ends of the driving rod (11) are movably connected to the two driving tubes (9). The slide groove (6) and the transmission cavity (10) carry liquid medium so that when the driving rod (11) moves relative to the driving tube (9), the positioning block (5) moves relative to the positioning part (3).

4. The positioning fixture of the vision inspection system for a volute casing according to claim 3, characterized in that: The drive rod (11) is rotatably provided with a transmission shaft (12) on its side. The outer circumference of the transmission shaft (12) is spirally provided with a guide strip (13), and the outer circumference of the drive rod (11) is provided with a transmission wheel (14) that matches the guide strip (13), so that when the transmission shaft (12) rotates, the guide strip (13) drives the drive rod (11) to move along the transmission cavity (10).

5. The positioning fixture of the vision inspection system for a volute casing according to claim 4, characterized in that: The transmission shaft (12) is connected to a first driving member (15) and a first positioning bearing (16) at both ends, so that the first driving member (15) drives the transmission shaft (12) to rotate.

6. The positioning fixture of the vision inspection system for a volute casing according to claim 3, characterized in that: The drive tube (9) has an annular groove (17) on its outer periphery, and the clamp (18) is engaged in the annular groove (17), and the clamp (18) and the drive tube (9) are in a rotatable fit.

7. The positioning fixture of the vision inspection system for volute casing according to claim 1, characterized in that: The positioning frame (2) is connected to a second driving member (19) and a second positioning bearing (20) on both sides, so that the second driving member (19) drives the positioning frame (2) to rotate.

8. The positioning fixture of the vision inspection system for a volute casing according to claim 1, characterized in that: The positioning block (5) has a through wire groove (21) inside. The wire groove (21) extends from the side of the positioning block (5) facing the conveyor belt (1) to the side of the positioning block (5) away from the conveyor belt (1) and is used to accommodate the wire of the test piece.

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