An x-ray foreign object detector

Abstract

The utility model belongs to the technical field of detection, concretely relates to a kind of X-ray foreign matter detection machine, including rack, two material guides and material pressing structure, and detection box is fixedly arranged on the rack, and conveying belt is arranged in the detection box;Two the bottom of material guide is butted on the upper surface of conveying belt, and conveying passage is clamped out between two material guides, and the spacing of conveying passage is adjusted by adjusting mechanism of material guide;The material pressing structure includes the material pressing frame being arranged on the material guide, and material pressing roller is rotatably arranged on the material pressing frame, and elastic connecting piece is arranged between material pressing frame and material guide.

Description

Technical Field

[0001] This utility model belongs to the field of detection technology, and more specifically, it relates to an X-ray foreign object detection machine. Background Technology

[0002] With the widespread application of X-ray foreign object detection technology in industries such as food, pharmaceuticals, and daily chemicals, the mechanical structure design of the detection machine directly affects the detection efficiency, stability, and product adaptability.

[0003] Existing X-ray foreign object detection machines typically use conveyor belts with fixed or adjustable guide rails to transport materials. However, in practical applications, the following problems still exist: For flexible packaging (such as vacuum bags or soft plastic packaging), traditional conveyor belts are prone to material shaking or displacement when running at high speeds or when the detection stops, affecting the stability of X-ray imaging and increasing the risk of false or missed detections. In addition, some lightweight packaging may flip or stack due to conveyor vibration, further interfering with the detection results.

[0004] Furthermore, since the guide rails of existing testing machines mostly adopt a single-sided manual adjustment method, the positions of the guide rails on both sides need to be repeatedly adjusted and the bolts tightened during operation. This is not only time-consuming, but also prone to material conveying deviation or even jamming due to asymmetrical adjustment. Especially on production lines where multiple product specifications are frequently switched, the traditional adjustment method seriously affects the testing efficiency.

[0005] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide an X-ray foreign object detection machine, in order to achieve a more practical purpose. Utility Model Content

[0006] In view of the problems mentioned in the background art above, this utility model provides an X-ray foreign object detection machine. The technical solution adopted by this utility model is as follows: An X-ray foreign object detection machine includes a frame, two guide frames, and a pressing structure. A detection box is fixedly installed on the frame, and a conveyor belt is installed inside the detection box. The bottoms of the two guide frames abut against the upper surface of the conveyor belt, and a conveying channel is formed between the two guide frames. The spacing of the conveying channel is adjusted by an adjusting mechanism. The pressing structure includes a pressing frame installed on the guide frames, a pressing roller is rotatably installed on the pressing frame, and an elastic connecting member is provided between the pressing frame and the guide frames.

[0007] Furthermore, there are two adjustment mechanisms, which are respectively set at both ends of the detection box. Each adjustment mechanism includes a mounting bracket fixedly set at one end of the detection box. An adjustment rod is set on the mounting bracket. Each of the two guide frames is set with a connecting block. The two connecting blocks are respectively connected to both ends of the adjustment rod. At least one adjustment rod is threaded and threadedly connected to the connecting block. The threads at both ends of the adjustment rod are opposite.

[0008] Furthermore, a limiting groove is provided on the mounting bracket, and the width of the connecting block matches the width of the limiting groove. The connecting block passes through the limiting groove and is threadedly connected to the adjusting rod.

[0009] Furthermore, the elastic connector includes a spring, the guide frame is provided with a mounting block, the pressure frame is provided with an inner rod, the mounting block is provided with an outer tube to accommodate the inner rod, the spring is sleeved outside the outer tube, and the two ends of the spring are respectively connected to the mounting block and the pressure frame.

[0010] Furthermore, the cross-section of the inner rod is polygonal.

[0011] Furthermore, a guide groove is provided at the bottom of the guide frame, and a movable roller is rotatably connected in the guide groove. The rotation direction of the movable roller is the same as that of the conveyor belt.

[0012] Furthermore, the guide frame is provided with a moving groove.

[0013] Furthermore, the conveyor belt is made of polyurethane and has anti-slip textures.

[0014] The beneficial effects of this utility model are: Instead of traditional suspended guide rails, the bottom of the guide frame directly abuts against the upper surface of the conveyor belt. This allows the support force of the guide frame to be transmitted through surface contact with the conveyor belt, forming a stable three-point or continuous support structure. When material enters the conveying channel, its lateral displacement is constrained by the inner wall of the guide frame. Because the bottom of the guide frame is in close contact with the conveyor belt, it can adapt synchronously to the slight deformation of the conveyor belt, reducing vibration transmission caused by differences in frame rigidity. Simultaneously, the conveying channel is formed by two guide frames "clamped together," and its width can be dynamically changed through an adjustment mechanism to accommodate packaging products of different widths. This clamping structure maintains symmetrical constraint during adjustment, ensuring the material remains centered in the channel and preventing deviation caused by uneven force on one side. Secondly, when the pressure frame floats due to material differences or conveying fluctuations, the elastic force of the elastic connector acts in the opposite direction on the pressure frame, ensuring it always applies a controllable pressure to the material. Therefore, this design not only enhances the lateral restraint capability of flexible packaging but also strengthens the dynamic stability of the overall system through structural coupling, effectively reducing the risk of X-ray imaging distortion caused by material deviation. Attached Figure Description

[0015] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the pressing structure of this utility model; Figure 3This is a schematic diagram of the material guide frame of this utility model; The attached diagram is labeled as follows: Frame 1, Inspection box 11, Conveyor belt 12, Baffle 13, Guide frame 2, Connecting block 21, Guide groove 22, Moving roller 23, Moving groove 24, Pressing frame 3, Pressing roller 31, Spring 32, Mounting block 33, Inner rod 34, Outer tube 35, Mounting bracket 4, Adjusting rod 41, Limiting groove 42. Detailed Implementation

[0016] like Figures 1-3 As shown, an X-ray foreign object detection machine includes a frame 1, two guide frames 2, and a pressing structure. A detection box 11 is fixedly mounted on the frame 1, and a conveyor belt 12 is disposed inside the detection box 11. The bottoms of the two guide frames 2 abut against the upper surface of the conveyor belt 12, and a conveying channel is formed between the two guide frames 2. The spacing of the conveying channel is adjusted by an adjusting mechanism. The pressing structure includes a pressing frame 3 disposed on the guide frames 2, and a pressing roller 31 is rotatably disposed on the pressing frame 3. An elastic connecting member is disposed between the pressing frame 3 and the guide frames 2.

[0017] Using the above technical solution, the bottom of the guide frame 2 directly abuts against the upper surface of the conveyor belt 12, instead of the traditional suspended guide rail. This allows the supporting force of the guide frame 2 to be transmitted through surface contact with the conveyor belt 12, forming a stable three-point or continuous support structure. When the material enters the conveying channel, its lateral displacement is constrained by the inner wall of the guide frame 2. Because the bottom of the guide frame 2 is in contact with the conveyor belt 12, it can adapt synchronously to the slight deformation of the conveyor belt 12, reducing vibration transmission caused by differences in the rigidity of the frame 1. Simultaneously, the conveying channel is formed by the "clamping" of two guide frames 2, and its width can be dynamically changed through an adjustment mechanism to accommodate packaging products of different widths. This clamping structure maintains symmetrical constraint forces during adjustment, ensuring that the material remains in the central area of ​​the channel, avoiding deviation caused by uneven force on one side. Secondly, when the pressure rack 3 floats due to material differences or conveying fluctuations, the elastic force of the elastic connector acts in the opposite direction on the pressure rack 3, so that it always applies a controllable pressure to the material. Therefore, this design not only improves the lateral restraint capability of flexible packaging, but also enhances the dynamic stability of the overall system through structural coupling, effectively reducing the risk of X-ray imaging distortion caused by material displacement.

[0018] As a preferred embodiment, there are two adjustment mechanisms, respectively located at both ends of the detection box 11. Each adjustment mechanism includes a mounting frame 4 fixedly mounted at one end of the detection box 11, with an adjustment rod 41 mounted on the mounting frame 4. Each of the two guide frames 2 is equipped with a connecting block 21, which is connected to both ends of the adjustment rod 41. At least one adjustment rod 41 is threaded and threadedly connected to a connecting block 21, with the threads at both ends of the adjustment rod having opposite rotation directions. When the adjustment rod 41 is rotated, due to the opposite rotation directions of the threads at both ends, the two connecting blocks 21 will move synchronously inward or outward along the axial direction of the rod, thereby causing the guide frames 2 connected to it to narrow or expand synchronously. This mechanical synchronization mechanism makes the width adjustment process of the conveying channel fast, symmetrical, and repeatable. The other adjustment rod 41 is a smooth sliding rod, to which the connecting block 21 can be directly slidably connected.

[0019] As a preferred embodiment, the mounting bracket 4 has a limiting groove 42, and the width of the connecting block 21 matches the width of the limiting groove 42. The connecting block 21 passes through the limiting groove 42 and is threadedly connected to the adjusting rod. This prevents the connecting block 21 from rotating circumferentially or swaying laterally during threaded transmission, ensuring the transmission efficiency and motion accuracy of the threaded pair.

[0020] As a preferred embodiment, the elastic connector includes a spring 32, a mounting block 33 is provided on the guide frame 2, an inner rod 34 is provided on the pressure frame 3, and an outer tube 35 is provided on the mounting block 33 to accommodate the inner rod 34. The spring 32 is sleeved outside the outer tube 35, and its two ends are respectively connected to the mounting block 33 and the pressure frame 3. When the pressure frame 3 floats due to material differences or conveying fluctuations, the inner rod 34 slides within the outer tube 35, simultaneously compressing or releasing the spring 32. The elastic force of the spring 32 then acts in the opposite direction on the pressure frame 3, ensuring that it always applies a controllable pressure to the material. Since the force and displacement of the spring 32 are linearly related, this pressure can be automatically fine-tuned according to the shape of the material, avoiding packaging damage caused by rigid compression, and is especially suitable for easily deformable flexible packaging such as vacuum bags.

[0021] As a preferred embodiment, the inner rod 34 has a polygonal cross-section. The polygonal cross-section of the inner rod 34 forms a surface contact fit with the inner cavity of the outer tube 35, and its circumferential position is geometrically locked, allowing only axial sliding, thereby avoiding the accumulation of torsional stress in the spring 32 during operation. The figure shows a triangular prism with a triangular cross-section.

[0022] As a preferred embodiment, the bottom of the guide frame 2 is provided with a guide groove 22, and a movable roller 23 is rotatably connected within the guide groove 22. The rotation direction of the movable roller 23 is the same as that of the conveyor belt 12. This transforms the sliding friction between the traditional guide frame 2 and the conveyor belt 12 into rolling friction, thereby extending the service life of the conveyor belt 12.

[0023] As a preferred embodiment, the guide frame 2 is provided with a moving groove 24. The moving groove 24 on the guide frame 2 is used to avoid the baffles 13 of the detection box 11 during the movement.

[0024] As a preferred embodiment, the conveyor belt 12 is made of polyurethane and features anti-slip textures. Polyurethane material has a high coefficient of friction, good wear resistance, and a certain degree of elastic recovery. Using it as the material for the conveyor belt 12 provides sufficient static friction when in contact with flexible packaging, preventing material slippage during start-up, stopping, or speed changes. Simultaneously, the elasticity of polyurethane absorbs some conveying vibrations, reducing impact transmission to the material above. The addition of anti-slip textures (such as diamond-shaped or striped protrusions) further increases the micro-roughness of the contact surface, improving interfacial friction performance.

[0025] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An X-ray foreign object detection machine characterized by: include A frame (1) is provided, on which a test box (11) is fixedly installed, and a conveyor belt (12) is provided inside the test box (11); Two guide frames (2) are provided, with their bottoms abutting against the upper surface of the conveyor belt (12). A conveying channel is formed between the two guide frames (2), and the spacing of the conveying channel is adjusted by an adjustment mechanism. The pressing structure includes a pressing frame (3) disposed on the guide frame (2), a pressing roller (31) rotatably disposed on the pressing frame (3), and an elastic connecting member disposed between the pressing frame (3) and the guide frame (2).

2. The X-ray foreign object detector according to claim 1, characterized in that: There are two adjustment mechanisms, which are respectively set at both ends of the detection box (11). The adjustment mechanism includes a mounting frame (4) fixedly set at one end of the detection box (11). An adjustment rod (41) is set on the mounting frame (4). A connecting block (21) is set on each of the two guide frames (2). The two connecting blocks (21) are respectively connected to both ends of the adjustment rod (41). At least one adjustment rod (41) is threaded and threadedly connected to the connecting block (21). The threads at both ends of the adjustment rod (41) are opposite.

3. The X-ray foreign object detector according to claim 2, characterized in that: The mounting bracket (4) has a limiting groove (42) and the width of the connecting block (21) matches the width of the limiting groove (42). The connecting block (21) passes through the limiting groove (42) and is threadedly connected to the adjusting rod (41).

4. The X-ray foreign object detector according to claim 1, wherein: The elastic connector includes a spring (32), the guide frame (2) is provided with a mounting block (33), the pressure frame (3) is provided with an inner rod (34), the mounting block (33) is provided with an outer tube (35) to accommodate the inner rod (34), the spring (32) is sleeved outside the outer tube (35), and the two ends of the spring (32) are respectively connected to the mounting block (33) and the pressure frame (3).

5. The X-ray foreign object detector according to claim 4, characterized in that: The cross-section of the inner rod (34) is polygonal.

6. The X-ray foreign object detector of claim 1, wherein: The bottom of the guide frame (2) is provided with a guide groove (22), and a movable roller (23) is rotatably connected in the guide groove (22). The rotation direction of the movable roller (23) is the same as that of the conveyor belt (12).

7. The X-ray foreign object detector of claim 1, wherein: The guide frame (2) is provided with a moving groove (24).

8. The X-ray foreign object detector according to claim 7, characterized in that: The conveyor belt (12) is made of polyurethane and has anti-slip texture.

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