Metal detecting and removing conveyor

Abstract

The utility model discloses a metal detecting and removing conveyor which is characterized in that a detecting conveying platform is mounted on a detecting rack, a detecting circulating conveying belt is mounted on the detecting conveying platform, a metal detector body is mounted on the detecting rack, the detecting conveying platform is provided with a detecting channel, and the detecting conveying platform is made of non-ferromagnetic materials; a metal filing magnetic attraction device is installed on the detection rack and located above the detection conveying platform, the metal filing magnetic attraction device is arranged on the upstream of the metal detector body, and an upstream detection sensor and a downstream detection sensor are arranged on the detection rack; a removing circulating conveying belt is mounted on the removing rack; a removing mechanism is installed on the removing rack and located on one side of the removing circulating conveying belt, a defective product receiving device is further installed on the removing rack, and the defective product receiving device and the removing mechanism are located on the two opposite sides of the removing circulating conveying belt. According to the conveyor, bagged materials can be effectively cleaned, unqualified products can be removed, and it is ensured that the detection result is accurate and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of metal detection and conveying, in particular to a metal detection and rejection 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. Since objects may carry metal debris during transportation, and impurities such as metal debris may also be attached to the conveyor belt, the metal detection conveyor will scan out the metal debris during scanning, resulting in inaccurate detection results and affecting production progress. At the same time, there is no device in the document that can effectively remove defective objects, and they need to be removed manually, which is a waste of manpower. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a metal detection and rejection conveyor, which can effectively clean bagged materials and reject unqualified products, thereby ensuring the accuracy and effectiveness of the detection results.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a metal detection and rejection conveyor, comprising a metal detection device and a rejection device, the metal detection device comprising a detection frame, a detection conveying platform is installed on the detection frame, a detection circulating conveyor belt driven by a first circulating motor is installed on the detection conveying platform, a metal detector body is installed on the detection frame, the detection conveying platform is provided with a detection channel passing through the metal detector body, the detection conveying platform is a conveying platform made of non-ferromagnetic material, a metal scrap magnetic suction device for magnetically suctioning the surface of the detection circulating conveyor belt is installed on the detection frame above the detection conveying platform, the metal scrap 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 detection frame;

[0006] The rejecting device includes a rejecting frame, on which is mounted a rejecting circulating conveyor belt connected to a detection circulating conveyor belt, and on which is mounted a second circulating motor driving the rejecting circulating conveyor belt to operate; on the rejecting frame, on one side of the rejecting circulating conveyor belt, is mounted a rejecting mechanism for laterally pushing out the bagged materials on the rejecting circulating conveyor belt for rejection, and on the rejecting frame, is further mounted a defective product receiving device for receiving the bagged materials after rejection, and the defective product receiving device and the rejecting mechanism are located on opposite sides of the rejecting circulating conveyor belt.

[0007] As a preferred solution, the metal chip magnetic suction device includes a gantry fixed on the detection frame, a lifting seat is slidably installed on the gantry, a laterally extending magnet is fixed on the lifting seat, the lifting seat is a mounting bar made of non-ferromagnetic material, the magnet is detachably fixed to the mounting bar by bolts, and a lifting power device for driving the lifting seat to rise and fall is provided on the gantry.

[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, and the upstream mounting plate and the downstream mounting plate are both provided with a height adjustment structure for adjusting the height of the upstream detection sensor and the downstream detection sensor.

[0009] 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.

[0010] As a preferred solution, the rejection mechanism includes a rejection frame fixedly mounted on the rejection frame and located above the rejection circulating conveyor belt, the rejection frame is provided with a transverse guide rail, a transverse slide is slidably mounted on the transverse guide rail, a push plate is fixed under the transverse slide, and a transverse rejection power device for driving the transverse slide to slide transversely is installed on the rejection frame.

[0011] As a preferred solution, the push plate is fixed to the transverse slide through a connecting frame, the connecting frame includes a horizontal plate and two vertical connecting plates fixed under the horizontal plate, the horizontal plate is fixed under the transverse slide, and the vertical connecting plates and the push plate are fixed by fixing bolts.

[0012] As a preferred solution, the vertical connecting plate is provided with a vertical bar hole, and the fixing bolt is constrained in the vertical bar hole.

[0013] After adopting the above technical scheme, the effect of the utility model is as follows: since the metal detection and rejection conveyor includes a metal detection device and a rejection device, the metal detection device includes a detection frame, a detection conveying platform is installed on the detection frame, a detection circulating conveyor belt driven by a first circulating motor is installed on the detection conveying platform, a metal detector body is installed on the detection frame, the detection conveying platform is provided with a detection channel passing through the metal detector body, the detection conveying platform is a conveying platform made of non-ferromagnetic material, a metal scrap magnetic suction device for magnetically suctioning the surface of the detection circulating conveyor belt is installed on the detection frame above the detection conveying platform, the metal scrap 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 detection frame;

[0014] The rejecting device comprises a rejecting frame, on which a rejecting circulating conveyor belt connected with a detection circulating conveyor belt is mounted, and on which a second circulating motor driving the rejecting circulating conveyor belt is mounted; on the rejecting frame, a rejecting mechanism for laterally pushing out the bagged materials on the rejecting circulating conveyor belt for rejection is mounted on one side of the rejecting circulating conveyor belt, and a defective receiving device for receiving the bagged materials after rejection is also mounted on the rejecting frame, and the defective receiving device and the rejecting mechanism are located on opposite sides of the rejecting circulating conveyor belt;

[0015] When the bagged materials are placed on the detection circulating conveyor belt, the bagged materials are conveyed by the detection 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 bagged materials pass through the upstream detection sensor, the metal chip magnetic attraction device magnetically attracts the bagged materials passing through, so that there is no metal chips on the surface of the bagged materials. When the conveying platform continues to convey the bagged materials, it passes through the downstream detection sensor, and the metal chip magnetic attraction device magnetically attracts the surface of the detection circulating conveyor belt to ensure that there is no metal chips on the surface of the detection circulating conveyor belt. The metal chip magnetic attraction device continuously repeats the above operation, and then the metal detector body detects the bagged materials that have been magnetically attracted. When the metal detector body detects that the bagged materials are unqualified, the detection circulating conveyor belt transports the bagged materials to the rejection circulating conveyor belt, and then the rejection mechanism pushes the bagged materials horizontally, and the defective product receiving device receives the bagged materials after rejection; the conveyor can effectively clean the bagged materials and reject unqualified products to ensure the accuracy and effectiveness of the detection results.

[0016] Furthermore, the metal chip magnetic attraction device comprises a gantry fixed on the detection frame, a lifting seat is slidably mounted on the gantry, a laterally extending magnet is fixed on the lifting seat, the lifting seat is a mounting strip made of non-ferromagnetic material, the magnet is detachably fixed to the mounting strip by bolts, 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 be close to or away from the surface of the detection circulating conveyor belt, and when the bagged material is conveyed over, the magnet can also be raised to effectively attract it, thereby improving the flexibility of magnetic attraction.

[0017] Furthermore, 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 mounted on the upstream mounting plate and the downstream mounting plate, and 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; the upstream detection sensor and the downstream detection sensor can be mounted on the gantry upstream and downstream of the magnet, ensuring that the magnet can perform effective magnetic suction cleaning on the bagged materials passing through and the surface of the detection circulating conveyor belt in turn; and the upstream detection sensor and the downstream detection sensor can be height-adjusted according to bagged materials of different sizes, 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 rejection mechanism includes a rejection frame fixedly mounted on the rejection frame and located above the rejection circulating conveyor belt, a transverse guide rail is provided on the rejection frame, a transverse slide is slidably mounted on the transverse guide rail, a push plate is fixed below the transverse slide, and a transverse rejection power device for driving the transverse slide to slide transversely is installed on the rejection frame; the transverse slide is driven to slide by the transverse rejection power device, thereby driving the rejection frame to slide, thereby pushing the bagged material on the rejection circulating conveyor belt to move transversely to the defective product receiving device, the structure is simple and the operation is convenient.

[0020] Furthermore, since the push plate is fixed to the transverse slide by a connecting frame, the connecting frame includes a horizontal plate and two vertical connecting plates fixed below the horizontal plate, the horizontal plate is fixed below the transverse slide, and the vertical connecting plates and the push plate are fixed by fixing bolts; this facilitates assembly and disassembly, and has a simple structure.

[0021] Furthermore, since the vertical connecting plate is provided with vertical holes, the fixing bolts are constrained in the vertical holes; by loosening the fixing bolts, the push plate can be movably adjusted between the fixing bolts, thereby improving the flexibility of the push plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0024] Figure 2 This is a right side view of the metal detection device according to the embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the rejection device of the embodiment of the utility model;

[0026] Figure 4 It is a right side view of the rejection device of the embodiment of the utility model;

[0027] In the attached drawings: 1. detection rack; 2. detection conveying platform; 3. first circulation motor; 4. detection circulation conveyor belt; 5. metal detector body; 6. detection channel; 7. upstream detection sensor; 8. downstream detection sensor; 9. rejection rack; 10. rejection circulation conveyor belt; 11. second circulation motor; 12. gantry; 13. mounting bar; 14. lifting cylinder; 15. upstream mounting plate; 16. downstream mounting plate; 17. adjusting screw; 18. fixing nut; 19. mounting block; 20. active conveying roller; 21. driven conveying roller; 22. tensioning mechanism; 23. rejection frame; 24. transverse guide rail; 25. transverse slide; 26. push plate; 27. rejection rotating motor; 28. containing box; 29. ​​horizontal plate; 30. vertical connecting plate; 31. vertical bar hole; 32. magnet. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below through specific embodiments.

[0029] like Figures 1 to 4As shown, a metal detection and rejection conveyor comprises a metal detection device and a rejection device, wherein the metal detection device comprises a detection frame 1, a detection conveying platform 2 is mounted on the detection frame 1, a detection circulating conveyor belt 4 driven by a first circulating motor 3 is mounted on the detection conveying platform 2, a metal detector body 5 is mounted on the detection frame 1, the detection conveying platform 2 is provided with a detection channel 6 passing through the metal detector body 5, the detection conveying platform 2 is a conveying platform made of non-ferromagnetic material, a metal scrap magnetic suction device for magnetically suctioning the surface of the detection circulating conveyor belt 4 is mounted on the detection frame 1 above the detection conveying platform 2, the metal scrap magnetic suction device is arranged upstream of the metal detector body 5, and an upstream detection sensor 7 and a downstream detection sensor 8 are respectively arranged upstream and downstream of the metal magnetic suction device on the detection frame 1;

[0030] The rejecting device includes a rejecting frame 9, on which is mounted a rejecting circulating conveyor belt 10 connected to the detection circulating conveyor belt 4, and on which is mounted a second circulating motor 11 for driving the rejecting circulating conveyor belt 10; on one side of the rejecting circulating conveyor belt 10, a rejecting mechanism for laterally pushing out the bagged materials on the rejecting circulating conveyor belt 10 for rejection is mounted, and on the rejecting frame 9, a defective product receiving device for receiving the bagged materials after rejection is also mounted, and the defective product receiving device and the rejecting mechanism are located on opposite sides of the rejecting circulating conveyor belt 10.

[0031] In this embodiment, the metal chip magnetic attraction device includes a gantry 12 fixed on the detection frame 1, a lifting seat is installed on the gantry 12 for lifting and sliding, a magnet 32 ​​extending laterally is fixed on the lifting seat, the lifting seat is a mounting bar 13 made of non-ferromagnetic material, the magnet 32 ​​is detachably fixed on the mounting bar 13 by bolts, and a lifting power device for driving the lifting seat to lift is provided on the gantry 12; the lifting power device includes a lifting cylinder 14, which is fixedly installed on the gantry 12, and the guide rod of the lifting cylinder 14 is connected with 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 32 ​​to lift and lower, ensuring that the bagged material can be accurately approached when magnetically attracted, and improving the flexibility of magnetic attraction; in this way, the mounting bar 13 can cover the corresponding detection circulating conveyor belt 4 surface, so that the detection circulating conveyor belt 4 surface or the bagged material can be effectively magnetically attracted, improving the magnetic attraction effect, and the mounting bar 13 is a non-ferromagnetic material, which can reduce the impact caused during detection and ensure the accuracy of the detection result.

[0032] In this embodiment, an upstream mounting plate 15 and a downstream mounting plate 16 are fixed to the upstream and downstream sides of the gantry 12, and the upstream detection sensor 7 and the downstream detection sensor 8 are respectively mounted on the upstream mounting plate 15 and the downstream mounting plate 16, so that the upstream detection sensor 7 and the downstream detection sensor 8 can be respectively mounted upstream and downstream of the magnet 32, 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 7 and the downstream detection sensor 8 are fixed at a certain height without affecting the transportation; the upstream mounting plate 15 and the downstream mounting plate 16 are both provided with a height adjustment structure for adjusting the height of the upstream detection sensor 7 and the downstream detection sensor 8; in this way, the height can be adjusted according to the different sizes of bagged materials to ensure the normal use of the sensor.

[0033] like Figure 1 As shown, the height adjustment structure includes an adjusting screw 17, and fixing nuts 18 threadedly connected to the adjusting screw 17 are respectively fixed on the upstream mounting plate 15 and the downstream mounting plate 16. The lower end of the adjusting screw 17 passes through the upstream mounting plate 15 and the downstream mounting plate 16 and is installed with a mounting block 19. The upstream detection sensor 7 and the downstream detection sensor 8 are fixed on the corresponding mounting blocks 19; by rotating the fixing nut 18, the raising and lowering of the adjusting screw 17 can be controlled, thereby adjusting the height of the upstream detection sensor and the downstream detection sensor 8, which is convenient for dealing with bagged materials of different sizes, and has a simple structure and is easy to use.

[0034] In this embodiment, the detection circulating conveyor belt 4 is installed between the active conveying roller 20 and the driven conveying roller 21, and the driven conveying roller 21 is installed on the detection frame 1 through the tensioning mechanism 22. The first circulating motor 3 drives the active conveying roller 20 to rotate, and the detection conveying platform 2 is located below the upper detection circulating conveyor belt 4, so that the detection conveying platform 2 can support the bagged materials on the detection circulating conveyor belt 4 and reduce the force on the detection circulating conveyor belt 4. The position of the driven conveying roller 21 can be adjusted by the tensioning mechanism 22, so that the detection circulating conveyor belt 4 is effectively tensioned to ensure stable transmission; the main shaft of the first circulating motor 3 and the active conveying roller 20 are driven by a transmission belt; the tensioning mechanism 22 is an existing structure on the market, so it is not described in detail in this article.

[0035] like Figure 3As shown, the rejection mechanism includes a rejection frame 23 fixedly mounted on the rejection frame 9 and located above the rejection circulating conveyor belt 10, a transverse guide rail 24 is arranged on the rejection frame 23, a transverse slide 25 is slidably mounted on the transverse guide rail 24, a push plate 26 is fixed below the transverse slide 25, and a transverse rejection power device for driving the transverse slide 25 to slide transversely is installed on the rejection frame 23; the transverse rejection power device includes a screw-nut mechanism, the screw is driven to rotate by the rejection rotating motor 27, and the transverse slide 25 is driven to slide by the nut, so that the push plate 26 can effectively push the bagged materials on the rejection circulating conveyor belt 10 to move transversely to the defective product receiving device, the structure is simple and the operation is convenient; the defective product receiving device includes a containing box 28 with an inclined slope, and the inclined slope is connected with the transverse direction of the rejection circulating conveyor.

[0036] Furthermore, the push plate 26 is fixed to the transverse slide 25 through a connecting frame, and the connecting frame includes a horizontal plate 29 and two vertical connecting plates 30 fixed below the horizontal plate 29. The horizontal plate 29 is fixed below the transverse slide 25, and the vertical connecting plates 30 are fixed to the push plate 26 by fixing bolts; such a screw fixing structure is simple and firmly installed, and is fixed by the horizontal plate 29 and the vertical connecting plates 30 in turn, which is convenient for disassembly and assembly.

[0037] The vertical connecting plate 30 is provided with a vertical hole 31 , and the fixing bolt is constrained in the vertical hole 31 ; thus, the push plate 26 can be adjusted in position, thus improving the flexibility of the device and ensuring accurate pushing during use.

[0038] The working principle of this embodiment is as follows: first, the bagged material is placed upstream of the detection circulating conveyor belt 4, and then the first circulating motor 3 drives the active conveying roller 20 to rotate, and the detection circulating conveyor belt 4 drives the driven conveying roller 21 to rotate, and starts to convey the bagged material. When the bagged material passes through the upstream detection sensor 7, the lifting cylinder 14 drives the mounting bar 13 to descend and approach the bagged material. After the bagged material passes through the magnet 32 ​​and the downstream detection sensor 8, the mounting bar 13 continues to descend and approaches the surface of the circulating conveyor belt for magnetic attraction. After the subsequent bagged material passes through the upstream detection sensor 7, the mounting bar 13 rises to the top of the bagged material and continues to be magnetically attracted. The above operation is repeated, and then the bagged material that has been magnetically attracted is inspected by the metal detector body 5 to check whether it is qualified. Unqualified products are conveyed to the rejection circulating conveyor belt 10, and the second circulating motor 11 drives the rejection circulating conveyor belt 10 to transmit. Then the rejection rotating motor 27 drives the transverse slide 25 to move transversely to drive the push plate 26 to make the bagged material fall into the receiving box 28 to complete the rejection.

[0039] 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 detection and rejection conveyor, comprising a metal detection device and a rejection device, characterized in that: The metal detection device comprises a detection frame, a detection conveying platform is installed on the detection frame, a detection circulating conveyor belt driven by a first circulating motor is installed on the detection conveying platform, a metal detector body is installed on the detection frame, the detection conveying platform is provided with a detection channel passing through the metal detector body, the detection conveying platform is a conveying platform made of non-ferromagnetic material, a metal scrap magnetic suction device for magnetically suctioning the surface of the detection circulating conveyor belt is installed on the detection frame above the detection conveying platform, the metal scrap 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 detection frame; The rejecting device includes a rejecting frame, on which is mounted a rejecting circulating conveyor belt connected to a detection circulating conveyor belt, and on which is mounted a second circulating motor driving the rejecting circulating conveyor belt to operate; on the rejecting frame, on one side of the rejecting circulating conveyor belt, is mounted a rejecting mechanism for laterally pushing out the bagged materials on the rejecting circulating conveyor belt for rejection, and on the rejecting frame, is further mounted a defective product receiving device for receiving the bagged materials after rejection, and the defective product receiving device and the rejecting mechanism are located on opposite sides of the rejecting circulating conveyor belt.

2. The metal detection and rejection conveyor according to claim 1, characterized in that: The metal chip magnetic suction device includes a gantry fixed on the detection frame, a lifting seat is installed on the gantry for lifting and sliding, a transversely extending magnet is fixed on the lifting seat, the lifting seat is a mounting bar made of non-ferromagnetic material, the magnet is detachably fixed to the mounting bar by bolts, and a lifting power device for driving the lifting seat to lift is arranged on the gantry.

3. The metal detection and rejection conveyor according to claim 2, 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. 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.

4. The metal detection and rejection conveyor according to claim 3, 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.

5. The metal detection and rejection conveyor according to claim 4, characterized in that: The rejection mechanism includes a rejection frame fixedly mounted on the rejection frame and located above the rejection circulating conveyor belt, the rejection frame is provided with a transverse guide rail, a transverse slide is slidably mounted on the transverse guide rail, a push plate is fixed below the transverse slide, and a transverse rejection power device for driving the transverse slide to slide transversely is installed on the rejection frame.

6. The metal detection and rejection conveyor according to claim 5, characterized in that: The push plate is fixed to the transverse slide by a connecting frame, the connecting frame includes a horizontal plate and two vertical connecting plates fixed below the horizontal plate, the horizontal plate is fixed below the transverse slide, and the vertical connecting plates and the push plate are fixed by fixing bolts.

7. The metal detection rejection conveyor according to claim 6, characterized in that: The vertical connecting plate is provided with a vertical bar hole, and the fixing bolt is constrained in the vertical bar hole.

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