NMR cabin cover frame automatic welding positioning device

Abstract

The utility model provides a kind of nuclear magnetic resonance machine cabin cover frame automatic welding positioning device, it is related to nuclear magnetic resonance machine processing technical field, including bottom plate, the top end of bottom plate is equipped with support seat, the outer side of support seat is provided with positioning mechanism, the top of support frame front end is equipped with top plate, the bottom end of top plate is equipped with electric telescopic link, the bottom end of electric telescopic link is equipped with mounting plate, the bottom end of mounting plate is detachably equipped with locating seat by bolt;By being provided with positioning mechanism outside support seat, the positioning frame of utilizing positioning mechanism, threaded hole, threaded rod, runner, locating plate, limit hole and limit rod between the mutual cooperation of rod, the convenient disassembly and installation processing of support seat can be carried out, so that support seat is more convenient and fast when replacing, so it is more efficient when the nuclear magnetic resonance machine cabin cover frame welding of different models is carried out, thereby the convenience of the device when using is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of nuclear magnetic resonance machine processing technology, and in particular to an automatic welding and positioning device for the frame of a nuclear magnetic resonance machine cabin. Background Technology

[0002] The MRI machine's hood frame is the core supporting structure of the MRI equipment, typically employing a ring-shaped or cylindrical design to ensure magnetic field uniformity and mechanical stability. The frame is mostly made of non-magnetic aluminum or titanium alloys to avoid interfering with the magnetic field, while also possessing high strength and lightweight characteristics. During welding, precision tooling (such as arc-shaped clamps or electric roller frames) is used for positioning, along with symmetrical welding techniques to control deformation. Large frames may require synchronous support by hydraulic cylinders, with dynamic adjustment achieved through a PLC system. After welding, strict inspection of roundness (error ≤1mm) and weld quality is necessary to ensure the long-term reliability and imaging accuracy of the equipment. In the automated welding process of the nuclear magnetic resonance imaging (MRI) chamber hood frame, the support block is the core component for achieving precise frame positioning. Its size and shape must strictly match the frame model to ensure welding accuracy. However, in existing positioning devices, the support block is often fixed to the device body by welding or as an integral structure, making it inconvenient to replace it according to the actual model of the hood frame. This fixed structure requires multiple positioning devices when processing different frame models, significantly increasing equipment investment costs. Moreover, when replacing the entire device, the debugging and calibration process is cumbersome, significantly extending the changeover time and reducing the continuity and efficiency of the welding production line. Therefore, this utility model proposes an automated welding positioning device for the MRI chamber hood frame to solve the above problems. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes an automatic welding and positioning device for the nuclear magnetic resonance imaging (MRI) chamber cover frame, which solves the problem in the prior art that it is inconvenient to replace the support blocks according to the actual model, resulting in low processing efficiency for different models of MRI chamber cover frames.

[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: an automatic welding and positioning device for a nuclear magnetic resonance imaging (MRI) chamber hood frame, comprising a base plate, a support seat installed at the top of the base plate, a positioning mechanism provided on the outer side of the support seat, a flipping mechanism provided between the two support seats at the top of the base plate, a support frame installed at the rear end of the top of the base plate, a top plate installed above the front end of the support frame, an electric telescopic rod installed at the bottom end of the top plate, an installation plate installed at the bottom end of the electric telescopic rod, and a positioning seat detachably installed at the bottom end of the installation plate by bolts; The positioning mechanism includes a positioning frame, a threaded hole, a threaded rod, a rotating wheel, a positioning plate, and a limiting structure. The positioning frame is installed on the outside of the support base. A threaded hole is opened through one side of the inside of the positioning frame. A threaded rod is installed through the inside of the threaded hole. A rotating wheel is installed at one end of the threaded rod, and a positioning plate is installed at the other end of the threaded rod. One end of the positioning plate is in contact with one end of the support base.

[0005] A further improvement is that the positioning frame is designed in the shape of an inverted triangle, with one end of the positioning frame fitting snugly against one end of the support base.

[0006] A further improvement is that the limiting structure includes a limiting hole and a limiting rod. The limiting hole is opened through one end of the positioning frame, and the limiting rod is installed through the inside of the limiting hole. One end of the limiting rod is connected to one end of the positioning plate.

[0007] A further improvement is that the cross-section of the limiting hole is larger than the cross-section of the limiting rod, and the limiting hole and the limiting rod form a sliding structure.

[0008] A further improvement is that the tilting mechanism includes a hydraulic cylinder and an electric roller frame, the hydraulic cylinder is mounted on the top of the base plate, and the electric roller frame is mounted on the top of the hydraulic cylinder.

[0009] A further improvement is that polyurethane gaskets are installed on the inner sides of both the support base and the positioning base, and the polyurethane gaskets can provide protection for the cabin frame.

[0010] The beneficial effects of this utility model are as follows: By providing a positioning mechanism on the outside of the support base, the positioning frame, threaded hole, threaded rod, rotating wheel, positioning plate, limiting hole, and limiting rod of the positioning mechanism can be used to easily disassemble and install the support base, making it easier and faster to replace the support base. Therefore, it is more efficient to weld different models of MRI machine cabin hood frames, thus greatly improving the convenience of the device in use. By providing a flipping mechanism above the base plate, the hydraulic cylinder and electric roller frame of the flipping mechanism can drive the MRI machine cabin hood frame to move upward and rotate, making it easier and faster to weld the bottom and rear of the MRI machine cabin hood frame, thus greatly improving the practicality of the device in use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the flipping mechanism of this utility model; Figure 3 This is a schematic diagram of the overall structure of the positioning mechanism of this utility model.

[0012] The components are: 1. Base plate; 2. Support seat; 3. Support frame; 4. Top plate; 5. Electric telescopic rod; 6. Mounting plate; 7. Positioning seat; 8. Hydraulic cylinder; 9. Electric roller frame; 10. Positioning frame; 11. Threaded hole; 12. Threaded rod; 13. Rotary wheel; 14. Positioning plate; 15. Limiting hole; 16. Limiting rod; 17. Polyurethane gasket. Detailed Implementation

[0013] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0014] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes an automatic welding and positioning device for a nuclear magnetic resonance imaging (MRI) chamber hood frame, including a base plate 1. A support seat 2 is installed at the top of the base plate 1, and a positioning mechanism is provided on the outer side of the support seat 2. A flipping mechanism is provided between the two support seats 2 at the top of the base plate 1. A support frame 3 is installed at the rear end of the top of the base plate 1, and a top plate 4 is installed above the front end of the support frame 3. An electric telescopic rod 5 is installed at the bottom end of the top plate 4, and an mounting plate 6 is installed at the bottom end of the electric telescopic rod 5. A positioning seat 7 is detachably installed at the bottom end of the mounting plate 6 by bolts. The support seat 2 and the positioning seat 7 are divided into multiple independent modules, which can be adjusted by the electric telescopic rod 5 to adapt to different diameters or local curvature deviations.

[0015] The positioning mechanism includes a positioning frame 10, a threaded hole 11, a threaded rod 12, a rotating wheel 13, a positioning plate 14, and a limiting structure. The positioning frame 10 is installed on the outside of the support base 2. A threaded hole 11 is provided through one side of the interior of the positioning frame 10. A threaded rod 12 is provided through the interior of the threaded hole 11. A rotating wheel 13 is installed at one end of the threaded rod 12, and a positioning plate 14 is installed at the other end of the threaded rod 12. One end of the positioning plate 14 is in contact with one end of the support base 2. The positioning frame 10 has a U-shaped design. When the support base 2 needs to be replaced, the rotating wheel 13 is rotated to drive... The threaded rod 12 rotates, causing it to move inside the threaded hole 11. Under the limitation of the limiting hole 15 and the limiting rod 16, the threaded rod 12 drives the positioning plate 14 to move backward. At this time, the support seat 2 can be removed from the inside of the positioning frame 10, and then the new support seat 2 can be placed inside the positioning frame 10. The reverse rotating wheel 13 drives the positioning plate 14 to move, and the positioning plate 14 is used to fix the support seat 2. The support seat 2 can be easily disassembled and installed, making it easier and faster to replace. Therefore, it is more efficient to weld different models of nuclear magnetic resonance machine cabin frames, thereby greatly improving the convenience of the device in use.

[0016] The limiting structure includes a limiting hole 15 and a limiting rod 16. The limiting hole 15 is opened through one end of the positioning frame 10, and the limiting rod 16 is installed through the inside of the limiting hole 15. One end of the limiting rod 16 is connected to one end of the positioning plate 14. The cross-section of the limiting hole 15 is larger than the cross-section of the limiting rod 16. The limiting hole 15 and the limiting rod 16 form a sliding structure. In use, the mutual cooperation between the limiting hole 15 and the limiting rod 16 can limit the movement of the positioning plate 14, making the positioning plate 14 more stable when moving.

[0017] The flipping mechanism includes a hydraulic cylinder 8 and an electric roller frame 9. The hydraulic cylinder 8 is mounted on the top of the base plate 1, and the electric roller frame 9 is mounted on the top of the hydraulic cylinder 8. The hydraulic system, through a PLC programmable logic controller, servo valves, proportional valves, and pressure and displacement sensors, can achieve high-precision synchronization of multiple cylinders. When it is necessary to rotate the MRI machine hood frame, the hydraulic cylinder 8 is activated to drive the electric roller frame 9 to move upward, thereby driving the MRI machine hood frame to move upward. At this time, the electric roller frame 9 is activated to rotate the MRI machine hood frame, making welding at the bottom and rear of the MRI machine hood frame more convenient and faster, thus greatly improving the practicality of the device in use.

[0018] Polyurethane gaskets 17 are installed on the inner sides of both the support base 2 and the positioning base 7. The polyurethane gaskets 17 can protect the hood frame, making the MRI machine hood frame less prone to scratches or metal contamination during processing.

[0019] Working principle: First, the operator places the MRI chamber hood frame above the support base 2. Then, the electric telescopic rod 5 is activated, moving the positioning seat 7 downwards. The support base 2 and positioning seat 7 are used to position the MRI chamber hood frame. The polyurethane gasket 17 design improves the positioning effect and reduces the risk of damage. Welding can then be performed on the MRI chamber hood frame. When rotation of the MRI chamber hood frame is required, the hydraulic cylinder 8 is activated, moving the electric roller frame 9 upwards, which in turn moves the MRI chamber hood frame upwards. The electric roller frame 9 is then activated to position the MRI chamber hood frame. The rotation process is repeated to position the MRI machine cabin frame, followed by welding. When the support seat 2 needs to be replaced, the rotating wheel 13 drives the threaded rod 12 to rotate, causing the threaded rod 12 to move inside the threaded hole 11. Under the limitation of the limiting hole 15 and the limiting rod 16, the threaded rod 12 drives the positioning plate 14 to move backward. At this time, the support seat 2 can be removed from the inside of the positioning frame 10, and then the new support seat 2 is placed inside the positioning frame 10. The rotating wheel 13 is reversed to drive the positioning plate 14 to move, and the positioning plate 14 is used to fix the support seat 2. The positioning seat 7 can be disassembled and assembled using bolts.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic welding and positioning device for a nuclear magnetic resonance imaging (MRI) chamber hood frame, comprising a base plate (1), characterized in that: A support base (2) is installed at the top of the base plate (1). A positioning mechanism is provided on the outside of the support base (2). A flipping mechanism is provided between the two support bases (2) at the top of the base plate (1). A support frame (3) is installed at the rear end of the top of the base plate (1). A top plate (4) is installed above the front end of the support frame (3). An electric telescopic rod (5) is installed at the bottom end of the top plate (4). An installation plate (6) is installed at the bottom end of the electric telescopic rod (5). A positioning seat (7) is detachably installed at the bottom end of the installation plate (6) by bolts. The positioning mechanism includes a positioning frame (10), a threaded hole (11), a threaded rod (12), a rotating wheel (13), a positioning plate (14), and a limiting structure. The positioning frame (10) is installed on the outside of the support base (2). A threaded hole (11) is provided through one side of the interior of the positioning frame (10). A threaded rod (12) is provided through the interior of the threaded hole (11). A rotating wheel (13) is installed at one end of the threaded rod (12). A positioning plate (14) is installed at the other end of the threaded rod (12). One end of the positioning plate (14) is in contact with one end of the support base (2).

2. The automatic welding and positioning device for the nuclear magnetic resonance imaging (MRI) chamber frame according to claim 1, characterized in that: The positioning frame (10) is designed in the shape of a c, and one end of the positioning frame (10) is in contact with one end of the support base (2).

3. The automatic welding and positioning device for the nuclear magnetic resonance imaging (MRI) chamber hood frame according to claim 2, characterized in that: The limiting structure includes a limiting hole (15) and a limiting rod (16). The limiting hole (15) is opened through one end of the positioning frame (10), and the limiting rod (16) is installed through the inside of the limiting hole (15). One end of the limiting rod (16) is connected to one end of the positioning plate (14).

4. The automatic welding and positioning device for the nuclear magnetic resonance imaging (MRI) chamber hood frame according to claim 3, characterized in that: The cross-section of the limiting hole (15) is larger than the cross-section of the limiting rod (16), and the limiting hole (15) and the limiting rod (16) form a sliding structure.

5. The automatic welding and positioning device for the nuclear magnetic resonance imaging (MRI) chamber hood frame according to claim 1, characterized in that: The flipping mechanism includes a hydraulic cylinder (8) and an electric roller frame (9). The hydraulic cylinder (8) is mounted on the top of the base plate (1), and the electric roller frame (9) is mounted on the top of the hydraulic cylinder (8).

6. The automatic welding and positioning device for the nuclear magnetic resonance imaging (MRI) chamber hood frame according to claim 1, characterized in that: Polyurethane gaskets (17) are installed on the inner sides of both the support base (2) and the positioning base (7), and the polyurethane gaskets (17) can protect the cabin frame.

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