A feeding device for automatic calibration of an enclosed radome housing

Abstract

This utility model relates to the field of radome housing processing technology, specifically a feeding device for automatic calibration of enclosed radome housings. It includes a frame with a vacuum suction cup for adsorbing and fixing the radome housing. The vacuum suction cup is fixed to a first piston rod at the output end of a first cylinder. A first guide rail mechanism for driving the first cylinder is also provided on the frame. A lower fixed ring is located on the frame, and an upper movable ring is located above it. An inner guide ring is located inside the upper movable ring. The upper movable ring is driven by a lifting mechanism on the frame to move up and down. This utility model introduces a circumferential clamping and limiting mechanism based on vacuum adsorption. After the radome housing is adsorbed by the vacuum suction cup and before it is formally transported to the processing point, the radome housing is clamped and centered from all sides, forcing its axis to align with the theoretical center line of the processing point, laying a solid foundation for precise benchmark positioning in subsequent processing.

Description

Technical Field

[0001] This utility model relates to the field of antenna radome housing processing technology, specifically a feeding device for automatic calibration of enclosed antenna radome housing. Background Technology

[0002] In fields such as radar communication and aerospace, the radome is a key component protecting the internal precision antenna, and its manufacturing and processing accuracy directly affects the performance of the entire system. The radome shell is usually made of composite materials and is characterized by its large size, complex shape, and relatively low structural rigidity. During its production process, the shell often needs to be transported from the loading area to CNC machine tools or other special processing equipment for drilling, cutting, grinding, and other processes.

[0003] Currently, a common material loading method in the industry is to use a gantry crane or gantry robot equipped with vacuum suction cups. The specific operation process is as follows: the negative pressure generated by the vacuum suction cups is used to pick up the antenna cover housing, then move it to the worktable (or processing point) of the processing equipment, and finally release the vacuum, allowing the housing to fall onto the worktable for positioning, clamping, and processing.

[0004] However, long-term production practice has revealed a significant technical flaw in this existing material feeding method: poor repeatability in pre-processing positioning, which severely impacts the quality and efficiency of subsequent processing. This flaw manifests itself primarily in the following aspects: 1. Posture drift during transport: During the movement of the housing by the gantry crane or robot to the processing point, acceleration and vibration inevitably occur during start-up and stopping. Since the connection between the housing and the suction cup is only static friction rather than rigid, these dynamic disturbances will cause the housing to slowly displace or deflect relative to the suction cup. This "posture drift" causes the spatial posture of the housing to constantly change during the movement, making it impossible to maintain a constant position. 2. Positioning accuracy cannot be guaranteed: Ultimately, when the housing is transported to the machining point and released, its final position depends entirely on its relative position on the suction cup at the moment of release. Due to the uncertainty brought about by the aforementioned process, the position of the housing on the worktable is inconsistent each time, and there is a random deviation between its axis and the theoretical center line of the worktable.

[0005] This lack of repeatability has serious consequences. Subsequent processing equipment (such as CNC machine tools) typically relies on fixtures on the worktable for secondary positioning and clamping of the housing. If the housing's position deviates too much each time it is positioned, it can lead to lengthy fixture positioning and correction processes, severely slowing down production. In severe cases, it may exceed the fixture's adjustment range, requiring manual reloading and unloading by operators, significantly reducing automation. In extreme cases, inaccurate positioning can even lead to errors in the machining datum, resulting in major quality incidents such as product scrap.

[0006] Therefore, existing technologies lack a loading device capable of effectively limiting the circumferential position of the radome housing before or during transport, based on vacuum adsorption, to ensure a stable and consistent axial position throughout the entire process from being grasped to being transported and released. This is precisely the technical problem that this application aims to solve. To this end, we provide a loading device for automatically calibrating an enclosed radome housing to address the aforementioned issues. Summary of the Invention

[0007] The purpose of this invention is to provide a feeding device for automatic calibration of an enclosed radome housing, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A feeding device for automatic calibration of an enclosed radome housing includes a frame. A vacuum suction cup for adsorbing and fixing the radome housing is mounted on the frame. The vacuum suction cup is fixed to a first piston rod located at the output end of a first cylinder. A first guide rail mechanism for driving the first cylinder is mounted on the frame. A lower fixed ring is mounted on the frame, and an upper movable ring is located above the lower fixed ring. An inner guide ring is located inside the upper movable ring. The upper movable ring is driven to move up and down by a lifting mechanism mounted on the frame. Multiple arc-shaped clamping blocks are located inside the inner guide ring. When the upper movable ring moves up and down, it drives the multiple arc-shaped clamping blocks to simultaneously perform radial expansion or contraction movements.

[0009] As described above, an automatic calibration feeding device for an enclosed radome housing includes a vacuum suction cup connected to an external vacuum generator via an air pipe.

[0010] As described above, an automatic calibration feeding device for an enclosed radome housing includes: a first guide rail mechanism comprising a mounting base fixed on a frame, a lead screw rotatably mounted on the mounting base, a moving block threaded onto the lead screw, a moving plate mounted on the moving block, and a first cylinder fixed on the moving plate. The mounting base is equipped with a motor, and the lead screw is installed at the output end of the motor and is driven to rotate by the motor. The mounting base is provided with a guide rod, which passes through the movable block.

[0011] As described above, an automatic calibration feeding device for an enclosed radome housing includes a lifting mechanism comprising a second cylinder fixed on a frame, a second piston rod fixed to an upper movable ring at the output end of the second cylinder, and a guide post on the frame that passes through the upper movable ring.

[0012] As described above, an automatic calibration feeding device for an enclosed radome housing includes: a first inclined block on the lower fixing ring; a guide pin passing through the inner guide ring; a second inclined block at the bottom of the guide pin; the second inclined block fitting against the inclined surface of the first inclined block; an arc-shaped clamping block at one end of the guide pin; a limiting rod at the other end; the limiting rod passing through the upper movable ring; and a return spring sleeved on the limiting rod; one end of the return spring fixed to the upper movable ring; and the other end fixed to the guide pin.

[0013] As described above, an automatic calibration feeding device for an enclosed radome housing includes: multiple first inclined blocks and guide pins, which are present in pairs; the first inclined blocks are circumferentially distributed at equal angles on the lower fixing ring; and the guide pins are circumferentially distributed at equal angles on the inner guide ring.

[0014] As described above, an automatic calibration feeding device for an enclosed radome housing has the following characteristics: the inner contour of the arc-shaped clamping block is adapted to the outer contour of the radome housing, and a soft adhesive layer is fixedly bonded to the surface of the arc-shaped clamping block.

[0015] Compared with the prior art, the beneficial effects of this utility model are: In use, the first guide rail mechanism can drive the first cylinder to move, thereby driving the vacuum suction cup at the bottom of the first cylinder to move. The vacuum suction cup can adsorb and grasp the antenna cover housing, and together with the first guide rail mechanism, transport the antenna cover housing to the processing point. Multiple arc-shaped clamping blocks are provided on the inner side of the inner guide ring. When the upper movable ring moves up and down, it will drive the multiple arc-shaped clamping blocks to perform radial expansion or contraction movements synchronously. The inner guide ring is set above the processing point. Then, through the synchronous radial contraction movement of the multiple inner guide rings, the antenna cover housing adsorbed at the bottom of the vacuum suction cup can be circumferentially clamped and limited so that the axis of the antenna cover housing transported by the vacuum suction cup can be in the same position each time. Therefore, this utility model innovatively introduces a circumferential clamping and limiting mechanism on the basis of vacuum adsorption. This mechanism can drive multiple arc-shaped clamping blocks to perform radial contraction motion synchronously after the radome housing is adsorbed by the vacuum suction cup and before it is officially transported to the processing point. It hugs and corrects the center of the radome housing from all sides, forcing its axis to align with the theoretical center line of the processing point. This process eliminates the horizontal offset and rotation generated during adsorption and transportation, ensuring that the spatial position and axis orientation of the radome housing remain highly consistent every time it is transported to the target processing point, laying a solid foundation for accurate benchmark positioning in subsequent processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a feeding device for automatic calibration of an enclosed radome housing.

[0017] Figure 2 A feeding device for automatic calibration of an enclosed radome housing Figure 1 A schematic diagram of the decomposed part of the structure.

[0018] Figure 3 A feeding device for automatic calibration of an enclosed radome housing Figure 1 A schematic diagram of the decomposed part of the structure.

[0019] Figure 4 A feeding device for automatic calibration of an enclosed radome housing Figure 3 A schematic diagram of the decomposed part of the structure.

[0020] Figure 5 A feeding device for automatic calibration of an enclosed radome housing Figure 4 A schematic diagram of the partially exploded structure after decomposition.

[0021] In the diagram: 1. Frame; 2. Antenna housing; 3. Vacuum suction cup; 4. First cylinder; 5. First piston rod; 6. Mounting base; 7. Lead screw; 8. Motor; 9. Moving block; 10. Guide rod; 11. Moving plate; 12. Lower fixed ring; 13. First inclined block; 14. Upper movable ring; 15. Second cylinder; 16. Second piston rod; 17. Guide column; 18. Guide pin; 19. Second inclined block; 20. Arc-shaped clamping block; 21. Limiting rod; 22. Return spring; 23. Inner guide ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1-5 As an embodiment of this utility model, a feeding device for automatic calibration of an enclosed radome housing includes a frame 1. A vacuum suction cup 3 for adsorbing and fixing the radome housing 2 is provided on the frame 1. The vacuum suction cup 3 is fixed on a first piston rod 5 provided at the output end of a first cylinder 4. A first guide rail mechanism for driving the first cylinder 4 to move is provided on the frame 1. A lower fixed ring 12 is provided on the frame 1. An upper movable ring 14 is provided above the lower fixed ring 12. An inner guide ring 23 is provided on the inner side of the upper movable ring 14. The upper movable ring 14 is driven by a lifting mechanism provided on the frame 1 to achieve up and down movement. Multiple arc-shaped clamping blocks 20 are provided on the inner side of the inner guide ring 23. When the upper movable ring 14 moves up and down, it drives the multiple arc-shaped clamping blocks 20 to perform radial expansion or contraction movements simultaneously.

[0024] In this embodiment, during use, the first guide rail mechanism drives the first cylinder 4 to move, thereby moving the vacuum suction cup 3 at the bottom of the first cylinder 4. The vacuum suction cup 3 can adsorb and grasp the antenna cover housing 2, and together with the first guide rail mechanism, transport the antenna cover housing 2 to a position above the processing point. Then, the first cylinder 4 is activated to drive the first piston rod 5 to extend and retract, which drives the vacuum suction cup 3 to rise and fall, thereby moving the antenna cover housing 2 downward and slowly transporting the antenna cover housing 2 to the processing point. Afterward, the vacuum suction cup 3 releases its adsorption force, and the antenna cover housing 2 can automatically fall to the processing point. The inner guide ring 23 is provided with a... Multiple arc-shaped clamping blocks 20, when the upper movable ring 14 moves up and down, will drive the multiple arc-shaped clamping blocks 20 to perform radial expansion or contraction movements synchronously. The inner guide ring 23 is set above the processing point. When the antenna housing 2 is transported to the position above the processing point, it is first made to pause briefly. The upper movable ring 14 is driven to move down by the lifting mechanism, which drives the multiple inner guide rings 23 to perform radial contraction movements synchronously. This can perform circumferential clamping and limiting of the antenna housing 2 adsorbed at the bottom of the vacuum suction cup 3, so that the axis of the antenna housing 2 transported by the vacuum suction cup 3 can be in the same position before it falls to the processing point.

[0025] As a further embodiment of this invention, the vacuum suction cup 3 is connected to an external vacuum generator via an air pipe.

[0026] In this embodiment, an external vacuum generator provides negative pressure to the vacuum suction cup 3, ensuring the stability and reliability of the vacuum suction cup 3's adsorption, and facilitating control.

[0027] As a further embodiment of this utility model, the first guide rail mechanism includes a mounting base 6 fixed on the frame 1, a lead screw 7 rotatably mounted on the mounting base 6, a moving block 9 threadedly mounted on the lead screw 7, a moving plate 11 mounted on the moving block 9, and a first cylinder 4 fixed on the moving plate 11. The mounting base 6 is equipped with a motor 8, and the lead screw 7 is installed at the output end of the motor 8 and is driven to rotate by the motor 8. A guide rod 10 is provided on the mounting base 6, and the guide rod 10 passes through the moving block 9.

[0028] In this embodiment, the motor 8 is electrically connected to an external power source via a wire. When the motor 8 is started, the motor 8 drives the lead screw 7 to rotate, which in turn drives the moving block 9 to move precisely in a straight line along the guide rod 10. The moving block 9 is provided with a moving plate 11, and the first cylinder 4 is fixed on the moving plate 11. Therefore, the first cylinder 4 will move horizontally, thereby realizing the precise horizontal movement of the vacuum suction cup 3 at the bottom of the first cylinder 4.

[0029] As a further embodiment of this utility model, the lifting mechanism includes a second cylinder 15 fixed on the frame 1, and a second piston rod 16 fixed to the upper movable ring 14 is provided at the output end of the second cylinder 15. A guide post 17 is provided on the frame 1, and the guide post 17 passes through the upper movable ring 14.

[0030] In this embodiment, the second cylinder 15 serves as a power source, driving the second piston rod 16 and the upper movable ring 14 connected thereto to move stably up and down along the guide post 17, providing power for the clamping action. The guide post 17 passes through the upper movable ring 14 to limit and guide the upper movable ring 14 when it moves up and down.

[0031] As a further embodiment of this utility model, a first inclined block 13 is provided on the lower fixed ring 12, a guide pin 18 is provided through the inner guide ring 23, a second inclined block 19 is provided at the bottom of the guide pin 18, the second inclined block 19 is in contact with the inclined surface of the first inclined block 13, an arc-shaped clamping block 20 is provided at one end of the guide pin 18, and a limiting rod 21 is provided at the other end. The limiting rod 21 is provided through the upper movable ring 14, and a reset spring 22 is sleeved on the limiting rod 21. One end of the reset spring 22 is fixed to the upper movable ring 14, and the other end is fixed to the guide pin 18.

[0032] In this embodiment, when the upper movable ring 14 is pushed down by the second cylinder 15, it causes the inner guide ring 23 to move down. The position of the first inclined block 13 fixed on the lower fixed ring 12 remains unchanged, forcing the second inclined block 19 connected to the guide pin 18 to slide along the inclined surface of the first inclined block 13. This converts the vertical movement of the upper movable ring 14 into the radial inward movement of the guide pin 18, driving the arc-shaped clamping block 20 to contract and clamp. The return spring 22 ensures that when the upper movable ring 14 rises, it can drive the arc-shaped clamping block 20 to expand radially outward and return to its original position.

[0033] As a further embodiment of this utility model, the number of the first inclined block 13 and the guide pin 18 are set to be multiple and exist in pairs. The first inclined block 13 is circumferentially distributed at equal angles on the lower fixing ring 12, and the guide pin 18 is circumferentially distributed at equal angles on the inner guide ring 23.

[0034] In this embodiment, multiple clamping points are evenly distributed along the circumference to ensure that clamping force can be applied evenly to the antenna housing 2 from all sides, achieving true center positioning and avoiding skewing caused by unilateral force.

[0035] As a further embodiment of this utility model, the inner contour of the arc-shaped clamping block 20 is adapted to the outer contour of the antenna housing 2, and a soft adhesive layer is fixedly bonded to the surface of the arc-shaped clamping block 20.

[0036] In this embodiment, the inner contour of the arc-shaped clamping block 20 increases the contact area, improving the clamping stability and positioning accuracy of the arc-shaped clamping block 20 on the antenna housing 2. The soft rubber layer can increase friction and prevent slippage, and can also effectively protect the surface of the antenna housing 2 from scratches when it is clamped by the arc-shaped clamping block 20.

[0037] In this invention, the motor 8 drives the lead screw 7 to rotate, moving the movable plate 11 and its components above the radome housing 2. The first cylinder 4 then actuates, causing the vacuum suction cup 3 to descend and adhere to the radome housing 2 before lifting it. The motor 8 then rotates in the opposite direction, transporting the vacuum suction cup 3 with the radome housing 2 attached to it directly above the processing point. Subsequently, the first cylinder 4 drives the radome housing 2 to descend to a predetermined height, positioned at the center of multiple inner guide rings 23. At this point, the second cylinder 15 actuates, pushing the upper movable ring 14 downwards along the guide post 17, passing through the first inclined block 13 and the... The cooperation of the two inclined blocks 19 transforms the vertical motion into the synchronous radial inward movement of multiple guide pins 18, thereby causing all the arc-shaped clamping blocks 20 to contract evenly, clamping and centering the radome housing 2, so that its axis is precisely aligned with the center of the machining point. After the correction is completed, the vacuum suction cup 3 releases the vacuum, and the radome housing 2 is precisely placed on the machining point. Finally, the second cylinder 15 resets, the upper movable ring 14 rises, and under the action of the reset spring 22, the arc-shaped clamping blocks 20 radially expand and reset, and the entire device returns to the initial state, waiting for the next operation.

[0038] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. An automatic loading device for the calibration of a cover shell for a surround antenna, comprising a frame (1), characterized in that, The frame (1) is provided with a vacuum suction cup (3) for adsorbing and fixing the antenna housing (2). The vacuum suction cup (3) is fixed on the first piston rod (5) provided at the output end of the first cylinder (4). The frame (1) is provided with a first guide rail mechanism for driving the first cylinder (4) to move. The frame (1) is provided with a lower fixed ring (12). An upper movable ring (14) is provided above the lower fixed ring (12). An inner guide ring (23) is provided on the inner side of the upper movable ring (14). The upper movable ring (14) is driven by a lifting mechanism provided on the frame (1) to achieve up and down movement. A plurality of arc-shaped clamping blocks (20) are provided on the inner side of the inner guide ring (23). When the upper movable ring (14) moves up and down, it will drive the plurality of arc-shaped clamping blocks (20) to perform radial expansion or contraction movements simultaneously.

2. The automatic calibration of the loading device of the surrounding antenna shell according to claim 1, wherein, The vacuum suction cup (3) is connected to an external vacuum generator via an air pipe.

3. The automatic calibration of the loading device for the surrounding antenna shell according to claim 1, characterized in that, The first guide rail mechanism includes a mounting base (6) fixed on the frame (1), a lead screw (7) is rotatably mounted on the mounting base (6), a moving block (9) is threaded onto the lead screw (7), a moving plate (11) is mounted on the moving block (9), and the first cylinder (4) is fixed on the moving plate (11). A motor (8) is provided on the mounting base (6), and the lead screw (7) is installed at the output end of the motor (8) and driven to rotate by the motor (8); A guide rod (10) is provided on the mounting base (6), and the guide rod (10) passes through the moving block (9).

4. The feeding device for automatic calibration of an enclosed radome housing according to claim 1, characterized in that, The lifting mechanism includes a second cylinder (15) fixed on the frame (1). The output end of the second cylinder (15) is provided with a second piston rod (16) fixed to the upper movable ring (14). A guide column (17) is provided on the frame (1) and the guide column (17) passes through the upper movable ring (14).

5. The automatic calibration of the surrounding antenna shell loading device according to claim 1, wherein, The lower fixed ring (12) is provided with a first inclined block (13), and the inner guide ring (23) is provided with a guide pin (18). The bottom of the guide pin (18) is provided with a second inclined block (19). The second inclined block (19) is in contact with the inclined surface of the first inclined block (13). One end of the guide pin (18) is provided with an arc-shaped clamping block (20), and the other end is provided with a limit rod (21). The limit rod (21) is provided through the upper movable ring (14). A reset spring (22) is sleeved on the limit rod (21). One end of the reset spring (22) is fixed to the upper movable ring (14), and the other end is fixed to the guide pin (18).

6. The automatic calibration of a surrounding antenna shell loading device according to claim 5, characterized in that, The number of the first inclined block (13) and the guide pin (18) are set to multiple and exist in pairs. The first inclined block (13) is circumferentially distributed on the lower fixing ring (12) at equal angles, and the guide pin (18) is circumferentially distributed on the inner guide ring (23) at equal angles.

7. The automatic calibration of a surrounding antenna shell loading device according to claim 5, characterized in that, The inner contour of the arc-shaped clamping block (20) is adapted to the outer contour of the antenna housing (2), and a soft rubber layer is fixedly adhered to the surface of the arc-shaped clamping block (20).

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