Metal detection conveyor

Abstract

The utility model discloses a metal detection conveyor which comprises a machine frame, a conveying platform is installed on the machine frame, a circulating conveying belt driven by a circulating motor is installed on the conveying platform, a metal detection machine body is installed on the machine frame, and the conveying platform is provided with a detection channel penetrating through the metal detection machine body. The conveying platform is made of non-ferromagnetic materials, a metal filing magnetic attraction device for conducting magnetic attraction on the surface of the circulating conveying belt is installed on the portion, located above the conveying platform, of the rack, and the metal filing magnetic attraction device is arranged on the upstream of the metal detector body. An upstream detection sensor and a downstream detection sensor are respectively arranged at the upstream and the downstream of the metal magnetic attraction device on the rack; the metal detection conveyor can be used for effectively cleaning a detected object and ensuring that a detection structure is accurate and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of metal detection, in particular to a metal detection conveyor. Background Art

[0002] Metal detectors are used to detect metal foreign bodies mixed in during the production of food, medicine, cosmetics, textiles, etc. The principle is a central transmitting coil and two equivalent receiving coils. These three coils are installed in a detection head. The oscillator transmits a high-frequency magnetic field through the middle transmitting coil, which is connected to the two receiving coils, but with opposite polarity. When the magnetic field is not disturbed by the outside world, the voltage output signals they generate cancel each other out. Once metal impurities enter the magnetic field area, this balance will be destroyed, and the induced voltages of the two receiving coils cannot be offset. The unoffset induced voltage is amplified and processed by the control system, and the metal detector can detect the presence of metal and generate an alarm signal, so that objects with metal can be removed.

[0003] Patent No. 202020828285.9 discloses a metal detection conveyor, including a fixed seat, an upper outer surface of the fixed seat is provided with a protective plate and a scanning fixed frame, and the scanning fixed frame is located at one end of the protective plate, and the inner surface of the protective plate is provided with a detachable smoothing mechanism, the detachable smoothing mechanism includes an arc plate, an adjusting column, a circular ring plate, a fixed plate, a spring, a clamping plate and a suction cup, a conveyor belt is provided at the lower end of the detachable smoothing mechanism, a display screen is provided on the front end outer surface of the scanning fixed frame, a telescopic conveying mechanism is provided on the front end outer surface of the fixed seat, and a base is provided on the lower end outer surface of the fixed seat; since the objects may carry metal debris during the transportation process, impurities such as metal debris will also be attached to the conveyor belt, so that the metal detection conveyor will scan out the metal debris during scanning, resulting in inaccurate detection results and affecting production progress. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a metal inspection conveyor which can effectively clean the inspection object and ensure the accuracy and effectiveness of the inspection structure.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a metal inspection conveyor, comprising a frame, a conveying platform is installed on the frame, a circulating conveyor belt driven by a circulating motor is installed on the conveying platform, a metal detector body is installed on the frame, the conveying platform is provided with a detection channel passing through the metal detector body, the conveying platform is a conveying platform made of non-ferromagnetic material, a metal chip magnetic suction device for magnetically suctioning the surface of the circulating conveyor belt is installed on the frame above the conveying platform, the metal chip magnetic suction device is arranged upstream of the metal detector body, and an upstream detection sensor and a downstream detection sensor are respectively arranged upstream and downstream of the metal magnetic suction device on the frame.

[0006] As a preferred solution, the metal chip magnetic suction device includes a gantry fixed on a frame, a lifting seat is slidably mounted on the gantry, a laterally extending magnet is fixed on the lifting seat, and a lifting power device for driving the lifting seat to rise and fall is provided on the gantry.

[0007] As a preferred solution, the lifting seat is a mounting bar made of non-ferromagnetic material, and the magnet is detachably fixed to the mounting bar by bolts.

[0008] As a preferred solution, an upstream mounting plate and a downstream mounting plate are fixed to the upstream side and the downstream side of the gantry, and the upstream detection sensor and the downstream detection sensor are respectively mounted on the upstream mounting plate and the downstream mounting plate.

[0009] As a preferred solution, both the upstream mounting plate and the downstream mounting plate are provided with height adjustment structures for adjusting the heights of the upstream detection sensor and the downstream detection sensor.

[0010] As a preferred solution, the height adjustment structure includes an adjusting screw, and the upstream mounting plate and the downstream mounting plate are respectively fixed with fixing nuts threadedly connected to the adjusting screw, the lower end of the adjusting screw passes through the upstream mounting plate and the downstream mounting plate and is installed with a mounting block, and the upstream detection sensor and the downstream detection sensor are fixed on the corresponding mounting blocks.

[0011] As a preferred solution, the circulating conveyor belt is installed between the active conveyor roller and the driven conveyor roller, the driven conveyor roller is installed on the frame through a tensioning mechanism, the circulating motor drives the active conveyor roller to rotate, and the conveying platform is located below the upper circulating conveyor belt.

[0012] As a preferred solution, the conveying platform is a stainless steel pallet, which is fixed on the frame and located below the upper circulating conveyor belt.

[0013] After adopting the above technical scheme, the effect of the utility model is as follows: since the metal inspection conveyor includes a frame, a conveying platform is installed on the frame, a circulating conveyor belt driven by a circulating motor is installed on the conveying platform, a metal inspection machine body is installed on the frame, the conveying platform is provided with a detection channel passing through the metal inspection machine body, the conveying platform is a conveying platform made of non-ferromagnetic material, a metal chip magnetic suction device for magnetically suctioning the surface of the circulating conveyor belt is installed on the frame above the conveying platform, the metal chip magnetic suction device is arranged upstream of the metal inspection machine body, and an upstream detection sensor and a downstream detection sensor are respectively arranged upstream and downstream of the metal magnetic suction device on the frame; in this way, when the detection object is placed On the circulating conveyor belt, the detection object is transported by the circulating conveyor belt. Since the conveying platform is made of non-ferromagnetic material, it can ensure the accuracy of the metal detector detection. Then, when the detection object passes through the upstream detection sensor, the metal chip magnetic attraction device magnetically attracts the detection object passing through, so that there is no metal chips on the surface of the detection object. When the conveying platform continues to transport the detection object and passes through the downstream detection sensor, the metal chip magnetic attraction device magnetically attracts the surface of the circulating conveyor belt to ensure that there is no metal chips on the surface of the circulating conveyor belt. The metal chip magnetic attraction device continuously repeats the above operation, and then the metal detector body detects the detection object that has been magnetically attracted to ensure the accuracy of the detection result. The metal detection conveyor can effectively clean the detection object to ensure the accuracy and effectiveness of the detection structure.

[0014] Furthermore, the metal chip magnetic suction device comprises a gantry fixed on a frame, a lifting seat is slidably mounted on the gantry, a laterally extending magnet is fixed on the lifting seat, and a lifting power device for driving the lifting seat to rise and fall is arranged on the gantry; by driving the lifting seat to rise and fall by the lifting power device, the magnet can be controlled to approach or move away from the surface of the circulating conveyor belt, and when the detection object is conveyed over, the magnet can also be raised to effectively detect it, thereby improving the flexibility of magnetic suction.

[0015] Furthermore, since the lifting seat is a mounting bar made of non-ferromagnetic material, the magnet is detachably fixed to the mounting bar by bolts; thus, the mounting bar being made of non-ferromagnetic material can reduce the influence caused during detection and ensure the accuracy of the detection result.

[0016] Since the upstream mounting plate and the downstream mounting plate are fixed to the upstream side and the downstream side of the gantry, the upstream detection sensor and the downstream detection sensor are respectively installed on the upstream mounting plate and the downstream mounting plate; the upstream detection sensor and the downstream detection sensor can be installed on the gantry upstream and downstream of the magnet, ensuring that the magnet can perform effective magnetic suction cleaning on the passing detection objects and the surface of the circulating conveyor belt in turn.

[0017] Furthermore, since both the upstream mounting plate and the downstream mounting plate are provided with height adjustment structures for adjusting the height of the upstream detection sensor and the downstream detection sensor, the height can be adjusted according to detection objects of different sizes, thereby ensuring the normal use of the sensors.

[0018] Since the height adjustment structure includes an adjusting screw, the upstream mounting plate and the downstream mounting plate are respectively fixed with fixing nuts threadedly connected to the adjusting screw, the lower end of the adjusting screw passes through the upstream mounting plate and the downstream mounting plate and is installed with a mounting block, and the upstream detection sensor and the downstream detection sensor are fixed on the corresponding mounting blocks; the adjusting screw can be vertically raised and lowered by rotating the fixing nut, and the mounting block facilitates the fixed installation of the upstream detection sensor and the downstream detection sensor, and the structure is simple and easy to use.

[0019] Furthermore, since the circulating conveyor belt is installed between the active conveyor roller and the driven conveyor roller, the driven conveyor roller is installed on the frame through a tensioning mechanism, the circulating motor drives the active conveyor roller to rotate, and the conveying platform is located below the circulating conveyor belt on the upper layer; the position of the driven conveyor roller can be adjusted through the tensioning mechanism, so that the circulating conveyor belt is effectively tensioned to ensure stable transmission.

[0020] Furthermore, since the conveying platform is a stainless steel pallet, which is fixed on the frame and located below the upper circulating conveyor belt, the stainless steel pallet can ensure a certain supporting strength while avoiding being attracted by a magnet or detected by a metal detector, thereby ensuring the use strength of the device and improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a front view of an embodiment of the utility model;

[0023] Figure 2 It is a right side view of an embodiment of the utility model;

[0024] In the attached figure: 1. Frame; 2. Conveying platform; 3. Circulating conveyor belt; 4. Metal detector body; 5. Detection channel; 6. Upstream detection sensor; 7. Downstream detection sensor; 8. Gantry; 9. Magnet; 10. Lifting cylinder; 11. Mounting strip; 12. Upstream mounting plate; 13. Downstream mounting plate; 14. Adjusting screw; 15. Fixing nut; 16. Mounting block; 17. Active conveying roller; 18. Driven conveying roller; 19. Circulating motor; 20. Mounting seat; 21. Bar hole; 22. Driving screw; 23. Connecting shaft. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below through specific embodiments.

[0026] like Figure 1 to Figure 2 As shown, a metal inspection conveyor comprises a frame 1, a conveying platform 2 is installed on the frame 1, a circulating conveyor belt 3 driven by a circulating motor 19 is installed on the conveying platform 2, a metal detector body 4 is installed on the frame 1, the conveying platform 2 is provided with a detection channel 5 passing through the metal detector body 4, the conveying platform 2 is a conveying platform 2 made of non-ferromagnetic material, a metal chip magnetic suction device for magnetically suctioning the surface of the circulating conveyor belt 3 is installed on the frame 1 above the conveying platform 2, the metal chip magnetic suction device is arranged upstream of the metal detector body 4, and an upstream detection sensor 6 and a downstream detection sensor 7 are respectively arranged upstream and downstream of the metal magnetic suction device on the frame 1.

[0027] In this embodiment, the metal chip magnetic attraction device includes a gantry 8 fixed on the frame 1, a lifting seat is installed on the gantry 8 for lifting and sliding, a laterally extending magnet 9 is fixed on the lifting seat, and a lifting power device for driving the lifting seat to lift and lower is provided on the gantry 8; the lifting power device includes a lifting cylinder 10, which is fixedly installed on the gantry 8, and a guide rod of the lifting cylinder 10 is connected to the lifting seat, so that the extension and retraction of the guide rod can control the lifting and lowering of the lifting seat, thereby driving the magnet 9 to rise and fall, ensuring that the magnetic attraction of the detection object can be accurately approached, thereby improving the flexibility of the magnetic attraction.

[0028] Furthermore, the lifting seat is a mounting strip 11 made of a non-ferromagnetic material, and the magnet 9 is detachably fixed to the mounting strip 11 by bolts, so that the mounting strip 11 can cover the corresponding surface of the circulating conveyor belt 3, thereby effectively magnetically attracting the surface of the circulating conveyor belt 3 or the detected object, thereby improving the magnetic attraction effect, and the mounting strip 11 is a non-ferromagnetic material, which can reduce the impact caused during detection and ensure the accuracy of the detection result.

[0029] In this embodiment, an upstream mounting plate 12 and a downstream mounting plate 13 are fixed to the upstream and downstream sides of the gantry 8, and the upstream detection sensor 6 and the downstream detection sensor 7 are respectively mounted on the upstream mounting plate 12 and the downstream mounting plate 13; this ensures that the upstream detection sensor 6 and the downstream detection sensor 7 are respectively mounted upstream and downstream of the magnet 9, so that the steps of detection in, magnetic attraction, and detection out are performed in sequence to ensure that the process is carried out in an orderly manner, and the upstream detection sensor 6 and the downstream detection sensor 7 are fixed at a certain height without affecting the transportation.

[0030] like Figure 1 As shown, the upstream mounting plate 12 and the downstream mounting plate 13 are both provided with height adjustment structures for adjusting the height of the upstream detection sensor 6 and the downstream detection sensor 7; in this way, the height can be adjusted according to the detection objects of different sizes to ensure the normal use of the sensors.

[0031] Furthermore, the height adjustment structure includes an adjusting screw 14, and fixing nuts 15 threadedly connected to the adjusting screw 14 are respectively fixed on the upstream mounting plate 12 and the downstream mounting plate 13. The lower end of the adjusting screw 14 passes through the upstream mounting plate 12 and the downstream mounting plate 13 and is installed with a mounting block 16. The upstream detection sensor 6 and the downstream detection sensor 7 are fixed on the corresponding mounting blocks 16; by rotating the fixing nut 15, the raising and lowering of the adjusting screw 14 can be controlled, thereby adjusting the height of the upstream detection sensor and the downstream detection sensor 7, which is convenient for dealing with detection objects of different sizes. The structure is simple and easy to use.

[0032] like Figure 2 As shown, the circulating conveyor belt 3 is installed between the active conveyor roller 17 and the driven conveyor roller 18, the driven conveyor roller 18 is installed on the frame 1 through a tensioning mechanism, the circulating motor 19 drives the active conveyor roller 17 to rotate, and the conveying platform 2 is located below the upper circulating conveyor belt 3, so that the conveying platform 2 can hold the detection object on the circulating conveyor belt 3 and reduce the force on the circulating conveyor belt 3. The position of the driven conveyor roller 18 can be adjusted through the tensioning mechanism to effectively tighten the circulating conveyor belt 3 and ensure stable transmission; The tensioning mechanism includes a mounting seat 20 fixed to the side of the frame 1, and the connecting shaft 23 of the driven conveying roller 18 passes through the frame 1 and is installed on the mounting seat 20, and corresponding strip holes 21 are provided on the mounting seat 20 and the frame 1, and the driven conveying roller 18 is slidably installed in the strip hole 21, and a driving screw 22 is installed on the mounting seat 20 to drive the driven conveying roller 18 to move horizontally, so that the position of the driven conveying roller 18 can be continuously adjusted to tension the circulating conveyor belt 3; the main shaft of the circulating motor 19 and the active conveying roller 17 are driven by a transmission belt.

[0033] Furthermore, the conveying platform 2 is a stainless steel pallet, which is fixed on the frame 1 and located below the upper circulating conveyor belt 3; the stainless steel pallet can avoid magnetic suction and detection errors during detection by the metal detector body 4, and the stainless steel can also effectively support the detected object and improve the accuracy of the detection.

[0034] The working principle of this embodiment is as follows: first, the detection object is placed upstream of the circulating conveyor belt 3, and then the circulating motor 19 drives the active conveyor roller 17 to rotate, and the circulating conveyor belt 3 drives the driven conveyor roller 18 to rotate to start conveying the detection object. When the detection object passes through the upstream detection sensor 6, the lifting cylinder 10 drives the mounting bar 11 to descend and approach the detection object. After the detection object is magnetically attracted by the magnet 9 and the downstream detection sensor 7, the mounting bar 11 continues to descend and approaches the surface of the circulating conveyor belt 3 for magnetic attraction. After the subsequent detection object passes through the upstream detection sensor 6, the mounting bar 11 rises to the top of the detection object and continues to be magnetically attracted. The above operation is repeated, and then the detection object that has been magnetically attracted is detected by the metal detector body 4 and then conveyed to the next process.

[0035] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solution of the present invention, without departing from the design spirit of the present invention, should fall within the scope of protection defined in the claims of the present invention.

Claims

1. A metal inspection conveyor, comprising a frame, a conveying platform mounted on the frame, a circulating conveyor belt driven by a circulating motor mounted on the conveying platform, a metal inspection machine body mounted on the frame, and a detection channel passing through the metal inspection machine body on the conveying platform, characterized in that: The conveying platform is made of non-ferromagnetic material. A metal chip magnetic attraction device for magnetically attracting the surface of the circulating conveyor belt is installed on the frame above the conveying platform. The metal chip magnetic attraction device is arranged upstream of the metal detector body. An upstream detection sensor and a downstream detection sensor are respectively arranged upstream and downstream of the metal magnetic attraction device on the frame.

2. A metal inspection conveyor according to claim 1, characterized in that: The metal chip magnetic suction device comprises a gantry fixed on a frame, a lifting seat is installed on the gantry for lifting and sliding, a magnet extending laterally is fixed on the lifting seat, and a lifting power device for driving the lifting seat to lift is arranged on the gantry.

3. A metal inspection conveyor as claimed in claim 2, characterized in that: The lifting seat is a mounting bar made of non-ferromagnetic material, and the magnet is detachably fixed on the mounting bar by bolts.

4. A metal inspection conveyor as claimed in claim 3, characterized in that: An upstream mounting plate and a downstream mounting plate are fixed to the upstream side and the downstream side of the gantry, and the upstream detection sensor and the downstream detection sensor are respectively mounted on the upstream mounting plate and the downstream mounting plate.

5. A metal inspection conveyor as claimed in claim 4, characterized in that: The upstream mounting plate and the downstream mounting plate are both provided with height adjustment structures for adjusting the height of the upstream detection sensor and the downstream detection sensor.

6. A metal inspection conveyor as claimed in claim 5, characterized in that: The height adjustment structure includes an adjusting screw, and fixing nuts threadedly connected to the adjusting screw are respectively fixed on the upstream mounting plate and the downstream mounting plate. The lower end of the adjusting screw passes through the upstream mounting plate and the downstream mounting plate and is installed with a mounting block. The upstream detection sensor and the downstream detection sensor are fixed on the corresponding mounting blocks.

7. A metal inspection conveyor as claimed in claim 6, characterized in that: The circulating conveyor belt is installed between the active conveyor roller and the driven conveyor roller. The driven conveyor roller is installed on the frame through a tensioning mechanism. The circulating motor drives the active conveyor roller to rotate. The conveying platform is located below the upper circulating conveyor belt.

8. A metal inspection conveyor as claimed in claim 7, characterized in that: The conveying platform is a stainless steel support plate, which is fixed on the frame and located below the circulating conveyor belt on the upper layer.

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