Metal detection machine with high rotating shaft stability

Abstract

The utility model relates to the technical field of metal detection machines, in particular to a metal detection machine with high rotating shaft stability, which comprises a detection device, a first conveying device and a second conveying device, the detection device comprises a metal detection device and a second conveying device, and the first conveying device comprises a track frame and a conveying belt wound on the track frame; the track frame comprises a fixing frame, a rotating shaft and a rotating shaft mounting structure, a moving groove is formed in the fixing frame, the rotating shaft mounting structure comprises a moving block, the end of the moving block and the end of the rotating shaft are both located in the moving groove, the moving block is clamped by the top wall and the bottom wall of the moving groove, and the rotating shaft is clamped and fixed by the moving block and the side wall of the moving groove; and the turnover device is in butt joint with the conveying belt, and the turnover device is used for removing unqualified products. The rotating shaft fixing structure solves the problems that when an existing rotating shaft fixing structure is affected by vibration, the rotating shaft is prone to loosening gradually, a conveying belt operates unstably, and therefore the conveying precision of products and the accuracy of detection results are affected.

Description

Technical Field

[0001] This utility model relates to the field of metal detection machine technology, and in particular to a metal detection machine with high shaft stability. Background Technology

[0002] In modern industrial production, metal detectors are crucial equipment for ensuring product quality, widely used in food, pharmaceuticals, cosmetics, electronics, and many other fields. Their primary function is to detect whether products contain metallic impurities or foreign objects, thereby ensuring product safety and reliability.

[0003] Traditional metal detectors typically use a conveyor system to transport items to the inspection area. One of the core components of this conveyor system is the shaft, which powers the conveyor belt and ensures the items arrive smoothly at the inspection area. Figure 1 As shown, the conveyor belt shaft 10 is typically installed inside the trough and secured by a fastener 11. However, during prolonged operation, this securing structure, due to the gap between the conveyor belt shaft 10 and the trough, is prone to loosening under vibration. Once the conveyor belt shaft 10 loosens, the conveyor belt will no longer run smoothly, thus affecting the conveying accuracy of the product and the accuracy of the testing results. Utility Model Content

[0004] To address the problem that current shaft fixing structures are prone to loosening under vibration, leading to unstable conveyor belt operation and affecting product conveying accuracy and test results, this invention provides a metal detection machine with high shaft stability.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] An embodiment of this utility model provides a metal detection machine with high shaft stability, comprising:

[0007] A detection device includes a metal detection device and a first conveying device that can pass through the metal detection device. The first conveying device includes a track frame and a conveyor belt wound around the track frame. The track frame includes a fixed frame, a rotating shaft, and a rotating shaft mounting structure for connecting the rotating shaft and the fixed frame. The fixed frame is provided with a moving groove. The rotating shaft mounting structure includes a moving block. The ends of the moving block and the rotating shaft are both located in the moving groove. The top and bottom walls of the moving groove clamp the moving block. The moving block and the side walls of the moving groove clamp and fix the rotating shaft.

[0008] A flipping device is connected to the conveyor belt and is used to remove defective products.

[0009] According to some embodiments of the present invention, the rotating shaft mounting structure further includes a top plate, a sliding frame, and a side plate, wherein the top plate, the sliding frame, and the side plate enclose the moving groove.

[0010] According to some embodiments of the present invention, the movable block is slidably engaged with the sliding frame, and the rotating shaft mounting structure further includes a connector that can pass through the side plate and the rotating shaft, and is connected to the movable block, so as to drive the movable block to move and cooperate with the side plate to clamp and fix the rotating shaft.

[0011] According to some embodiments of the present invention, the side plate is provided with a through hole for the connector to pass through.

[0012] According to some embodiments of the present invention, the top plate is provided with a shaft opening for the shaft to enter.

[0013] According to some embodiments of the present invention, the rotating shaft mounting structure further includes a washer, which is disposed between the rotating shaft and the moving block.

[0014] According to some embodiments of this utility model, the top plate, the sliding frame, and the side plate are integrally formed with the fixing frame.

[0015] According to some embodiments of the present invention, the track frame further includes a protective cover disposed on the fixed frame, the protective cover being used to protect the rotating shaft mounting structure.

[0016] According to some embodiments of the present invention, the flipping device includes a flipping frame, a second conveying device, and a lifting device. The second conveying device is connected to the conveyor belt, one end of the second conveying device is rotatably connected to the flipping frame, and the free end of the second conveying device is connected to the lifting device. The lifting device is used to lift the second conveying device.

[0017] According to some embodiments of the present invention, the lifting device includes a cylinder disposed on the tilting frame, the cylinder being used to lift the second conveying device.

[0018] This utility model has at least the following beneficial effects: the movable block of the rotating shaft mounting structure is in close contact with the top and bottom walls of the moving groove, which plays a role in clamping itself. At the same time, its side is in close contact with the rotating shaft, and together with the side wall of the moving groove, it clamps and fixes the rotating shaft. This design reduces the loosening of the rotating shaft caused by vibration or load changes, enhances the stability of the equipment, extends the service life of the equipment, and reduces the risk of equipment failure during operation. When a defective product is detected, the flipping device can remove the defective product, preventing it from entering the subsequent process, reducing the processing time of the subsequent process, and improving the overall production efficiency. Attached Figure Description

[0019] Figure 1 A schematic diagram of the existing shaft mounting structure;

[0020] Figure 2 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0021] Figure 3 A schematic diagram of the track frame of this utility model after the protective cover has been removed;

[0022] Figure 4 A schematic diagram showing the state when the moving block and the side wall of the moving groove clamp and fix the rotating shaft;

[0023] Figure 5 This is a schematic diagram of the track frame of this utility model after removing the protective cover and part of the frame.

[0024] Figure 6 for Figure 2 Enlarged view of the A mark. Detailed Implementation

[0025] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0026] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are 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, they should not be construed as limitations on this utility model.

[0027] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0028] Embodiments of this utility model provide a metal detection machine with high shaft stability, such as... Figure 2-6 As shown, it includes:

[0029] The detection device 100 includes a metal detection device 110 and a first conveying device 120 that can pass through the metal detection device 110. The first conveying device 120 includes a track frame 140 and a conveyor belt 130 wound around the track frame 140. The track frame 140 includes a fixed frame 150, a rotating shaft 160 and a rotating shaft mounting structure 170 for connecting the rotating shaft 160 and the fixed frame 150. The fixed frame 150 is provided with a moving groove 151. The rotating shaft mounting structure 170 includes a moving block 172. The ends of the moving block 172 and the rotating shaft 160 are both located in the moving groove 151. The top and bottom walls of the moving groove 151 clamp the moving block 172. The moving block 172 and the side walls of the moving groove 151 clamp the fixed rotating shaft 160.

[0030] The overturning device 200 is connected to the conveyor belt 130 and is used to remove defective products.

[0031] Metal detection device 110 is used to detect the metal content of products on conveyor belt 130. First conveying device 120 is used to convey the product to be detected into metal detection device 110. First conveying device 120 includes a track frame 140 and a conveyor belt 130. Track frame 140 provides support and guidance for conveyor belt 130. Track frame 140 includes a fixing frame 150, a rotating shaft 160, and a rotating shaft mounting structure 170. Fixing frame 150 is used to fix track frame 140, ensuring its stability and positional accuracy. Rotating shaft 160 is used to drive the movement of conveyor belt 130, ensuring smooth operation of conveyor belt 130. Rotating shaft mounting structure 170 is used to connect rotating shaft 160 and fixing frame 150, ensuring the stability and adjustability of rotating shaft 160. The movable block 172 is located in the movable trough 151, in close contact with the top and bottom walls of the trough, serving to clamp itself. Simultaneously, its side is in close contact with the rotating shaft 160, working together with the side wall of the movable trough 151 to clamp and fix the rotating shaft. This design ensures high stability of the rotating shaft during operation, reducing loosening caused by vibration and other factors. The flipping device 200 is connected to the conveyor belt 130 and is used to remove defective products. When the metal detection device 110 detects metal impurities in the product, the flipping device 200 flips, removing the defective product from the flipping device 200, while the qualified product is transferred to the next process by the flipping device 200.

[0032] The working principle of this utility model is as follows:

[0033] When the first conveying device 120 starts, the conveyor belt 130, driven by the rotating shaft 160, begins to operate, conveying the product to be inspected from one end to the metal detection device 110. When the product passes over the metal detection device 110 on the conveyor belt 130, the metal detection device 110 sends a detection signal. This signal is typically generated by electromagnetic induction. When the coil inside the metal detection device 110 is energized, it generates a magnetic field. When a product containing metal passes through the magnetic field area, it cuts the magnetic lines of force, causing a change in the magnetic flux in the coil, thereby generating an induced electromotive force in the detection device 100. The signal processing circuit inside the detection device 100 amplifies, filters, and processes the received induced electromotive force signal. By comparing it with a preset metal content threshold, it determines whether the product contains metal impurities. If the detected metal content exceeds the threshold, the product is considered unqualified. When the metal detection device 110 determines that the product is unqualified, it sends a removal signal to the flipping device 200. Upon receiving a signal, the flipping device 200's internal drive mechanism (such as a cylinder or motor) will cause it to flip. After flipping, defective products will be removed from the device's outlet and enter a designated defective product collection area or conveyor channel for further processing or recycling. Qualified products, on the other hand, will continue to be conveyed along the flipping device 200 to the next process for further processing or packaging.

[0034] The metal detector of this invention can improve the stability of the rotating shaft 160, ensure the accuracy and reliability of the detection process, and effectively remove unqualified products, thereby improving production efficiency and product quality.

[0035] In some embodiments, the pivot mounting structure 170 further includes a top plate 176, a sliding frame 171, and a side plate 177, which together form a moving groove 151.

[0036] The top plate 176, located above the moving groove 151, serves to enclose and limit movement. Together with the side plate 177 and the sliding frame 171, it forms the moving groove 151, providing a relatively enclosed operating space for the ends of the moving block 172 and the rotating shaft 160, preventing vertical displacement or offset during operation and ensuring stable rotation of the shaft. The sliding frame 171 is a component of the moving groove 151; its internal shape and dimensions match the moving block 172, allowing it to slide within it. The sliding frame is designed to ensure smooth movement of the moving block while also providing guidance and limiting, enabling it to move along a predetermined trajectory and thus drive the rotating shaft to rotate stably. Furthermore, the sliding frame is tightly connected to the top plate 176 and the side plate 177, forming a robust structure that provides reliable support for the installation and operation of the rotating shaft. The side plate 177 primarily clamps the ends of the moving block 172 and the rotating shaft 160 from the side, limiting their horizontal displacement.

[0037] Furthermore, the movable block 172 is slidably engaged with the sliding frame 171, and the rotating shaft mounting structure 170 also includes a connector 173. The connector 173 can pass through the side plate 177 and the rotating shaft 160, and is connected to the movable block 172, so as to drive the movable block 172 to move and cooperate with the side plate 177 to clamp and fix the rotating shaft 160.

[0038] The connector 173 is a component that passes through the side plate 177 and connects to the rotating shaft 160 and the movable block 172. It can have a threaded structure or other connection structure for fixing and connecting different components. The main function of the connector 173 is to move the movable block 172 and cooperate with the side plate 177 to clamp and fix the rotating shaft 160. One end of the connector 173 is connected to the movable block 172. When the connector 173 is subjected to external force (such as tightening or loosening), it will drive the movable block 172 to slide along the sliding frame 171. This movement can be towards or away from the rotating shaft 160. When the movable block 172 moves towards the rotating shaft 160, the side plate 177 also applies a certain pressure to the end of the rotating shaft 160. In this way, the movable block 172 and the side plate 177 act like a clamp, firmly holding the rotating shaft 160 in the middle, preventing the rotating shaft from shaking or shifting during operation.

[0039] Furthermore, the side plate 177 is provided with a through hole for the connector 173 to pass through.

[0040] A through hole is a hole provided on the side plate 177, the size and shape of which match the connector 173, allowing the connector 173 to pass through the side plate 177 and connect to the moving block 172. By providing a through hole, the connector 173 can be easily passed through the side plate 177 and connected to the moving block 172, thereby fixing the rotating shaft 160 to the moving block 172 and improving the installation efficiency and convenience of the equipment.

[0041] In some embodiments, the top plate 176 is provided with a shaft opening 174 for the shaft 160 to enter.

[0042] The pivot opening 174 is an opening provided on the top plate 176, the size and shape of which match the pivot 160, allowing the pivot 160 to smoothly enter and be installed into the sliding frame 171. By providing the pivot opening 174, the pivot 160 can be easily installed into the sliding frame 171, or disassembled for maintenance or replacement when needed, improving the efficiency and convenience of equipment maintenance. During assembly, the pivot opening 174 simplifies assembly steps, reduces assembly time and costs, and improves production efficiency.

[0043] In some embodiments, the shaft mounting structure 170 further includes a washer 175 disposed between the shaft 160 and the movable block 172.

[0044] Washer 175 acts as a buffer and shock absorber. When the rotating shaft 160 is subjected to impact or vibration during operation, washer 175 can absorb some of the energy, reducing the direct impact on the moving block 172 and the rotating shaft 160, thereby extending the service life of the equipment. By adjusting the thickness or number of washers 175, the gap between the rotating shaft 160 and the moving block 172 can be precisely controlled, ensuring the smooth operation and precise fit of the rotating shaft 160, and improving the operating accuracy and stability of the equipment.

[0045] In some embodiments, the top plate 176, the sliding frame 171, and the side plate 177 are integrally formed with the fixed frame 150.

[0046] Integrated molding means that the top plate 176, sliding frame 171, and side plate 177 are manufactured and formed as a single unit with the fixed frame 150, rather than being assembled from multiple parts. This integrated molding design reduces connection points and seams between components, avoiding structural weaknesses caused by poor connections or stress concentration at seams, thereby improving the overall structural strength and stability of the device. Since the top plate 176, sliding frame 171, and side plate 177 are integrally molded with the fixed frame 150, no additional connection or assembly steps are required, significantly reducing assembly time and costs and improving production efficiency.

[0047] In some embodiments, the track frame 140 further includes a protective cover 180 disposed on the mounting bracket 150, the protective cover 180 being used to protect the rotating shaft mounting structure 170.

[0048] The protective cover 180 is a shell that covers the outside of the shaft mounting structure 170. It is typically made of materials such as metal or plastic and possesses a certain degree of strength and durability. Depending on the shape and spatial layout of the shaft mounting structure 170, the protective cover 180 can be designed in different shapes, such as rectangular, circular, or irregular, to adapt to different installation environments and requirements. The protective cover 180 can be fixed to the mounting bracket 150 using bolts, clips, or other connection methods to ensure its stability and secureness. The protective cover 180 effectively prevents external objects from impacting, scratching, or squeezing the shaft mounting structure 170, reducing equipment malfunctions and damage caused by external damage and extending the equipment's service life. During operation and maintenance, the protective cover 180 prevents operators' fingers or other body parts from contacting the rotating parts of the shaft mounting structure 170, improving equipment safety and avoiding accidental injuries.

[0049] In some embodiments, the flipping device 200 includes a flipping frame 210, a second conveying device 220, and a lifting device 230. The second conveying device 220 is connected to the conveyor belt 130. One end of the second conveying device 220 is rotatably connected to the flipping frame 210, and the free end of the second conveying device 220 is connected to the lifting device 230. The lifting device 230 is used to lift the second conveying device 220.

[0050] The tilting frame 210 is the main structure of the tilting device 200, used to support and fix the second conveying device 220 and the lifting device 230.

[0051] The second conveying device 220 receives and transports products from the conveyor belt 130 of the first conveying device 120. One end of the second conveying device 220 is rotatably connected to the tilting frame 210, allowing it to tilt under the support of the tilting frame 210. The other end of the second conveying device 220 is a free end connected to the lifting device 230, which controls the lifting and lowering of the second conveying device 220. The lifting device 230 can be driven by a hydraulic cylinder, pneumatic cylinder, or electric push rod. When it is necessary to remove defective products, the lifting device 230 drives the second conveying device 220 to tilt, thereby removing the defective products. Through the tilting and lifting actions, defective products can be removed quickly and effectively, improving production efficiency and product quality.

[0052] Furthermore, the lifting device 230 includes a cylinder mounted on the tilting frame 210, the cylinder being used to lift the second conveying device 220.

[0053] Driven by compressed air, the cylinder lifts and lowers the second conveyor 220. The cylinder operates quickly, enabling it to complete the lifting and lowering of the second conveyor 220 in a short time, thus improving the efficiency of removing defective products.

[0054] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A metal detection machine with high shaft stability, characterized in that, include: The detection device (100) includes a metal detection device (110) and a first conveying device (120) through which the metal detection device (110) can pass. The first conveying device (120) includes a track frame (140) and a conveyor belt (130) wound around the track frame (140). The track frame (140) includes a fixing frame (150), a rotating shaft (160), and a mechanism for connecting the rotating shaft (160) and the fixing frame (150). The rotating shaft mounting structure (170) of 50) is provided with a moving groove (151) on the fixed frame (150). The rotating shaft mounting structure (170) includes a moving block (172). The ends of the moving block (172) and the rotating shaft (160) are both located in the moving groove (151). The top and bottom walls of the moving groove (151) clamp the moving block (172). The side walls of the moving block (172) and the moving groove (151) clamp and fix the rotating shaft (160). A flipping device (200) is connected to the conveyor belt (130) and is used to remove defective products.

2. A metal detection machine with high shaft stability according to claim 1, characterized in that, The rotating shaft mounting structure (170) also includes a top plate (176), a sliding frame (171), and a side plate (177), which together form the moving groove (151).

3. A metal detection machine with high shaft stability according to claim 2, characterized in that, The movable block (172) slides with the sliding frame (171). The rotating shaft mounting structure (170) also includes a connector (173). The connector (173) can pass through the side plate (177) and the rotating shaft (160), and is connected to the movable block (172) to drive the movable block (172) to move and cooperate with the side plate (177) to clamp and fix the rotating shaft (160).

4. A metal detection machine with high shaft stability according to claim 3, characterized in that, The side plate (177) is provided with a through hole for the connector (173) to pass through.

5. A metal detection machine with high shaft stability according to any one of claims 2 to 4, characterized in that, The top plate (176) is provided with a shaft opening (174) for the shaft (160) to enter.

6. A metal detection machine with high shaft stability according to any one of claims 1 to 4, characterized in that, The rotating shaft mounting structure (170) also includes a washer (175), which is disposed between the rotating shaft (160) and the moving block (172).

7. A metal detection machine with high shaft stability according to any one of claims 2 to 4, characterized in that, The top plate (176), the sliding frame (171), and the side plate (177) are integrally formed with the fixed frame (150).

8. A metal detection machine with high shaft stability according to any one of claims 1 to 4, characterized in that, The track frame (140) also includes a protective cover (180) disposed on the fixing frame (150), the protective cover (180) being used to protect the rotating shaft mounting structure (170).

9. A metal detection machine with high shaft stability according to any one of claims 1 to 4, characterized in that, The flipping device (200) includes a flipping frame (210), a second conveying device (220), and a lifting device (230). The second conveying device (220) is connected to the conveyor belt (130). One end of the second conveying device (220) is rotatably connected to the flipping frame (210). The free end of the second conveying device (220) is connected to the lifting device (230). The lifting device (230) is used to lift the second conveying device (220).

10. A metal detection machine with high shaft stability according to claim 9, characterized in that, The lifting device (230) includes a cylinder mounted on the tilting frame (210) for lifting the second conveying device (220).

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