Automatic sorting and feeding mechanism

Abstract

The utility model provides an automatic sorting and feeding mechanism which comprises a material conveying part, a material conveying driving mechanism, a left opening and closing plate, a right opening and closing plate and an opening and closing driving mechanism. The left opening and closing plate is provided with a left pushing block, the right opening and closing plate is provided with a right containing groove and a right pushing block, and the right containing groove and the right pushing block are matched to form a first-row sorting groove and a second-row sorting groove which are staggered, so that materials are automatically sorted. V-shaped guide grooves are formed in the ends of the left pushing block and the right pushing block, and the left containing groove and the right containing groove are provided with V-shaped positioning welts and feeding guide welts, so that it is ensured that materials accurately enter the sequencing groove. The opening and closing driving mechanism drives the left opening and closing plate and the right opening and closing plate to move through a first servo motor, a belt, a lead screw and a nut sleeve. The lead screw is divided into the upper rod body and the lower rod body which are connected through the connecting ring and are convenient to disassemble. The material conveying part comprises a conveying belt and a second servo motor, a magnetic part is arranged on the conveying belt, the material position is kept stable, equal-distance feeding is achieved, and the efficiency and flexibility of a production line are improved.

Description

Technical Field

[0001] The utility model particularly relates to an automatic sorting and feeding mechanism. Background Art

[0002] Automation technology is increasingly used in modern industrial production, particularly in the processing and assembly of small parts such as filters. However, existing technologies have significant shortcomings in handling the orderly transport and processing of large quantities of materials. Specifically, existing automatic sorting and feeding mechanisms often only enable the continuous conveyance of a single file, failing to automatically separate a single file into multiple files to accommodate different processing stations.

[0003] For example, the Chinese utility model patent document with publication number "CN210392620U" discloses an automatic sorting mechanism for filter testing equipment, which mainly consists of a support frame and a conveying track arranged parallel to the support frame. The conveying track is divided into a feeding area and a sorting area. The feeding area is provided with a first centering mechanism and a second centering mechanism. The first centering mechanism includes guide rods and a first driving mechanism symmetrically arranged on both sides of the conveying track, and the second centering mechanism includes a clapper and a second driving mechanism arranged on both sides of the conveying track. The sorting area is provided with a sorting mechanism, including a number of lifting mechanisms arranged at intervals along the front and back of the conveying track and raised and lowered in sequence. A baffle is linked to the driving rod of the lifting mechanism.

[0004] This automatic sorting mechanism only centered the filters sequentially, with adjustable spacing between each filter group. However, the filters were ultimately output in a single row, failing to automatically separate materials from a single row into multiple rows. This made the automatic sorting mechanism unsuitable for simultaneously processing multiple materials or multiple rows of workstations, significantly reducing production line efficiency. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an automatic sorting and feeding mechanism to realize automatic sorting of materials into two columns in view of the deficiencies of the above-mentioned prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The right and left catching members are connected to each other to form a pair of right and left catching members, and the pair of right and left catching members are connected to each other to form a pair of left and right catching members.

[0008] Driven by a material transport mechanism, a material transport component (such as a conveyor belt or track) continuously conveys material from one end to the space between the left and right opening and closing plates. When the material reaches the predetermined position, the opening and closing mechanism activates, driving the left and right opening and closing plates closer together. At this point, the left pusher on the left opening and closing plate and the right material trough on the right opening and closing plate cooperate to form the first column of sorting troughs. Simultaneously, the right pusher on the right opening and closing plate and the left material trough (formed by the gap between the left pusher blocks) on the left opening and closing plate cooperate to form the second column of sorting troughs. As the left and right opening and closing plates approach, material is pushed into the first and second columns of sorting troughs, respectively. Because the first and second columns of sorting troughs are offset from each other, material can be automatically sorted from a single column to multiple columns (in this case, two columns), improving the efficiency and flexibility of the production line. The structural design of the left and right opening and closing plates makes the entire automatic sorting and feeding mechanism compact and space-saving. Furthermore, by adjusting the opening and closing degrees of the left opening and closing plate and the right opening and closing plate, materials of different sizes and shapes can be accommodated.

[0009] The above-mentioned automatic sorting and feeding mechanism can be further configured as follows: the ends of the left push block and the right push block are both provided with V-shaped guide grooves, the opening of the V-shaped guide groove of the left push block faces the right opening and closing plate, and the opening of the V-shaped guide groove of the right push block faces the left opening and closing plate, the inner end of the left accommodating groove and the inner end of the right accommodating groove are both provided with V-shaped positioning edges, and both sides of the outer end of the left accommodating groove and the outer end of the right accommodating groove are both provided with feeding guide edges connected to the V-shaped positioning edges.

[0010] When the material approaches the left and right push blocks, the opening design of the V-shaped guide groove guides the material into the sorting trough smoothly. The V-shaped structure of the V-shaped guide groove can automatically adjust the position of the material so that it is consistent with the direction of the sorting trough, ensuring that the material can enter the sorting trough accurately and stably. In the process of the material entering the sorting trough, the feed guide edge is connected to the V-shaped positioning edge to form a continuous guide path, further guiding the material to enter the sorting trough smoothly and accurately, helping to reduce friction and collision of the material during the automatic sorting process, and improve the material transmission efficiency and sorting and sorting accuracy. As the left opening and closing plate and the right opening and closing plate gradually approach, the material is pushed into the first and second column sorting troughs respectively. The V-shaped positioning edge accurately positions the material at the inner end of the sorting trough to prevent the material from shifting during the sorting process.

[0011] The above-mentioned automatic sorting feeding mechanism can be further configured as: the opening and closing driving mechanism includes a mounting frame distributed below the material transporting member, the mounting frame is hinged with several groups of screw rods, the upper part of the screw rod is provided with a first thread section, the lower part is provided with a second thread section, the first thread section and the second thread section are symmetrical to each other, the screw rod is linked to a left nut sleeve through the first thread section, the screw rod is linked to a right nut sleeve through the second thread section, the left nut sleeve is linked to a left slider, the right nut sleeve is linked to a right slider, the left slider is linked to the left opening and closing plate, the right slider is linked to the right opening and closing plate, the mounting frame is fixed with a slide rail, the left slider and the right slider are respectively slidably matched with the slide rail; the end of the screw rod is linked to a driven pulley, the driven pulley is linked to a belt, the belt is linked to a driving pulley, and the driving pulley is linked to a first servo motor fixed on the mounting frame.

[0012] The first servo motor starts, rotating the driving pulley. The driving pulley transmits power to the driven pulley via a belt, which in turn drives the screw. The screw has symmetrical first and second thread segments. As the screw rotates, the left nut sleeve moves upward on the first thread segment, while the right nut sleeve moves downward on the second thread segment (or in opposite directions, depending on the direction of screw rotation). This allows the left and right nut sleeves to move synchronously but in opposite directions. The left nut sleeve is linked to the left slider, while the right nut sleeve is linked to the right slider. As the nut sleeves move, the left and right sliders slide on their respective rails, respectively, driving the left and right opening and closing plates toward or away from each other. When the left and right opening and closing plates approach, a first row of sorting slots gradually forms between the left pusher block and the right trough, while a second row of sorting slots gradually forms between the right pusher block and the left trough. Materials are accurately pushed into these sorting slots by the transport unit, achieving automatic sorting and separation. Among them, the slide rail and the slider, on the one hand, transmit force, and on the other hand, improve the movement stability of the left opening and closing plate and the right opening and closing plate.

[0013] The above-mentioned automatic sorting and feeding mechanism can be further configured as: the screw rod includes an upper rod body and a lower rod body, the first section of the thread is arranged on the outer periphery of the upper rod body, and the second section of the thread is arranged on the outer periphery of the lower rod body, and a connecting ring is provided between the upper rod body and the lower rod body, one end of the upper rod body is hinged to the mounting frame, and the other end is inserted into the connecting ring, one end of the lower rod body is hinged to the mounting frame, and the other end is inserted into the connecting ring, and the side wall of the connecting ring is provided with an open groove running through the side wall, and the two sides of the opening groove are detachably connected by screws.

[0014] By separating the screw into an upper and lower body, the entire screw structure becomes more flexible and easier to disassemble and replace. A coupling ring connects the upper and lower bodies, ensuring they rotate as a single unit. A removable connection is achieved through an open slot and screws.

[0015] The above-mentioned automatic sorting feeding mechanism can be further configured as follows: the material transport member includes a conveyor belt, and pulleys are respectively linked to both ends of the conveyor belt, and the material transport driving mechanism includes a second servo motor linked to the pulley; a support frame is provided between the two sets of pulleys, and the conveyor belt is sleeved on the outer periphery of the support frame, and several groups of magnetic parts are provided between the support frame and the conveyor belt, and the several groups of magnetic parts are fixed to the support frame by screws, and the several groups of magnetic parts are arranged in sequence and at equal distances along a direction parallel to the conveyor belt.

[0016] After the material is transported to the conveyor belt, the magnetic part will generate suction on the material so that the material will not shake left and right as it moves with the conveyor belt, and the position of the material will not change easily. It should be noted that although the magnetic part will not continue to move with the conveyor belt, the way it generates suction on the material will not affect the advancement of the conveyor belt, and the conveyor belt can maintain normal operation; at the same time, the thrust of the left opening and closing plate and the right opening and closing plate is sufficient to overcome the suction of the magnetic part to achieve sorting and separation of the materials. At the same time, the magnetic part is designed separately from the conveyor belt to facilitate the disassembly and assembly of the magnetic part. Furthermore, by controlling the speed of the second servo motor, the distance between each two adjacent groups of materials can be kept consistent, that is, equidistant feeding, so that the clamping mechanism can more accurately clamp several groups of materials at the same time.

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of the left opening and closing plate and the right opening and closing plate of an embodiment of the utility model;

[0020] Figure 3 for Figure 2A partial enlarged schematic diagram in the middle;

[0021] Figure 4 This is a top view of the left opening and closing plate and the right opening and closing plate of an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the explosion of the material transporting part in an embodiment of the present utility model.

[0023] Label annotation: conveyor belt 1, left opening and closing plate 2, right opening and closing plate 3, left push block 4, right accommodating trough 5, left accommodating trough 6, right push block 7, V-shaped guide groove 8, V-shaped positioning edge 9, feed guide edge 10, mounting frame 11, first section thread 12, second section thread 13, left nut sleeve 14, right nut sleeve 15, left slider 16, right slider 17, slide rail 18, driven pulley 19, driving pulley 20, upper rod 21, lower rod 22, connecting ring 23, opening groove 24, pulley 25, second servo motor 26, support frame 27, magnetic part 28. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 5 The automatic sorting feeding mechanism shown includes a material transport member and a material transport driving mechanism linked to the material transport member, and also includes a left opening and closing plate 2 and a right opening and closing plate 3 relatively distributed on both sides of the material transport member. The left opening and closing plate 2 and the right opening and closing plate 3 are linked with an opening and closing driving mechanism that can drive the left opening and closing plate 2 and the right opening and closing plate 3 to be relatively close to or separated. The left opening and closing plate 2 is located on the side facing the right opening and closing plate 3 and is provided with a plurality of groups of left pushing blocks 4 spaced apart from each other. The right opening and closing plate 3 is located on the side facing the left opening and closing plate 2 and is provided with a plurality of groups of left pushing blocks 4 spaced apart from each other. Each group of left push blocks 4 is provided with a group of right accommodating grooves 5, a group of left accommodating grooves 6 is provided between each two adjacent groups of left push blocks 4, and a group of right push blocks 7 is provided between each two adjacent groups of right accommodating grooves 5; when the left opening and closing plate 2 and the right opening and closing plate 3 are close to each other, a group of first column sorting grooves is formed between each group of corresponding left push blocks 4 and the right accommodating grooves 5, and a group of second column sorting grooves is formed between each group of right push blocks 7 and the left accommodating grooves, and the first column sorting grooves and the second column sorting grooves are staggered with each other.

[0026] Driven by a material transport mechanism, a material transport component (such as a conveyor belt or track, which enables orderly material transport) continuously conveys material from one end to the space between the left and right opening and closing plates 2 and 3. When the material reaches the predetermined position, the opening and closing drive mechanism activates, driving the left and right opening and closing plates 2 and 3 toward each other. At this point, the left pusher block 4 on the left opening and closing plate 2 and the right material trough 5 on the right opening and closing plate 3 cooperate to form the first column of sorting troughs. Simultaneously, the right pusher block 7 on the right opening and closing plate 3 cooperates with the left material trough (formed by the gap between the left pusher block 4) on the left opening and closing plate 2 to form the second column of sorting troughs. As the left and right opening and closing plates 2 and 3 approach, the material is pushed into the first and second columns of sorting troughs, respectively. Because the first and second columns of sorting troughs are offset from each other, the material can be automatically sorted from a single column to multiple columns (in this case, two columns), improving the efficiency and flexibility of the production line. The structural scheme of the left opening and closing plate 2 and the right opening and closing plate 3 makes the entire automatic sorting and feeding mechanism compact and takes up little space. Further, by adjusting the opening and closing degree of the left opening and closing plate 2 and the right opening and closing plate 3, it can adapt to materials of different sizes and shapes.

[0027] The ends of the left push block 4 and the right push block 7 are both provided with V-shaped guide grooves 8, the opening of the V-shaped guide groove 8 of the left push block 4 faces the right opening and closing plate 3, and the opening of the V-shaped guide groove 8 of the right push block 7 faces the left opening and closing plate 2, the inner end of the left accommodating groove 6 and the inner end of the right accommodating groove are both provided with V-shaped positioning edges 9, and both sides of the outer end of the left accommodating groove 6 and the outer end of the right accommodating groove are provided with feed guide edges 10 connected to the V-shaped positioning edges 9.

[0028] When the material approaches the left push block 4 and the right push block 7, the opening design of the V-shaped guide groove 8 guides the material to enter the sorting groove smoothly. The V-shaped structure of the V-shaped guide groove 8 can automatically adjust the position of the material so that it is consistent with the direction of the sorting groove, ensuring that the material can enter the sorting groove accurately and stably. In the process of the material entering the sorting groove, the feed guide edge 10 is connected to the V-shaped positioning edge 9 to form a continuous guide path, further guiding the material to enter the sorting groove smoothly and accurately, helping to reduce the friction and collision of the material during the automatic sorting process, and improving the material transmission efficiency and sorting and sorting accuracy. As the left opening and closing plate 2 and the right opening and closing plate 3 gradually approach, until the material is pushed into the first column sorting groove and the second column sorting groove respectively. The V-shaped positioning edge 9 accurately positions the material at the inner end of the sorting groove to prevent the material from shifting during the sorting process.

[0029] The opening and closing drive mechanism includes a mounting frame 11 distributed below the material transport member, and several groups of screw rods are hinged on the mounting frame 11. The upper part of the screw rod is provided with a first section of thread 12, and the lower part is provided with a second section of thread 13. The first section of thread 12 and the second section of thread 13 are symmetrical to each other. The screw rod is linked to a left nut sleeve 14 through the first section of thread 12, and the screw rod is linked to a right nut sleeve 15 through the second section of thread 13. The left nut sleeve 14 is linked to a left slider 16, and the right nut sleeve 15 is linked to a right slider 17. The left slider 16 is linked to the left opening and closing plate 2, and the right slider 17 is linked to the right opening and closing plate 3. A slide rail 18 is fixed on the mounting frame 11, and the left slider 16 and the right slider 17 are respectively slidably matched with the slide rail 18; the end of the screw rod is linked to a driven pulley 19, the driven pulley 19 is linked to a belt, the belt is linked to a driving pulley 20, and the driving pulley 20 is linked to a first servo motor fixed on the mounting frame 11.

[0030] The first servo motor starts, driving the active pulley 20 to rotate. The active pulley 20 transmits power to the driven pulley 19 through a belt, and the driven pulley 19 is linked to the end of the screw, thereby driving the screw to rotate. The screw is provided with a first section of thread 12 and a second section of thread 13 that are symmetrical to each other. As the screw rotates, the left nut sleeve 14 moves upward on the first section of thread 12, and the right nut sleeve 15 moves downward on the second section of thread 13 (or moves in the opposite direction, depending on the direction of rotation of the screw). This enables the left nut sleeve 14 and the right nut sleeve 15 to move synchronously but in opposite directions. The left nut sleeve 14 is linked to the left slider 16, and the right nut sleeve 15 is linked to the right slider 17. As the nut sleeves move, the left slider 16 and the right slider 17 slide on the slide rail 18 respectively, thereby driving the left opening and closing plate 2 and the right opening and closing plate 3 to move closer or apart. When the left and right opening and closing plates 2 and 3 are brought closer together, a first row of sorting slots gradually forms between the left push block 4 and the right trough 5, while a second row of sorting slots gradually forms between the right push block 7 and the left trough. The material, conveyed by the material transporter, is accurately pushed into these sorting slots, achieving automatic sorting and separation. The slide rails 18 and sliders not only transmit force but also enhance the stability of the movement of the left and right opening and closing plates 2 and 3.

[0031] The screw rod includes an upper rod body 21 and a lower rod body 22. The first section of thread 12 is arranged on the outer periphery of the upper rod body 21, and the second section of thread 13 is arranged on the outer periphery of the lower rod body 22. A connecting ring 23 is provided between the upper rod body 21 and the lower rod body 22. One end of the upper rod body 21 is hinged to the mounting frame 11, and the other end is inserted into the connecting ring 23. One end of the lower rod body 22 is hinged to the mounting frame 11, and the other end is inserted into the connecting ring 23. The side wall of the connecting ring 23 is provided with an open groove 24 that passes through the side wall, and the two sides of the opening groove 24 are detachably connected by screws.

[0032] By dividing the screw into an upper rod body 21 and a lower rod body 22, the entire screw structure is more flexible and easy to disassemble and replace. A coupling ring 23 connects the upper and lower rod bodies 21 and 22, ensuring they rotate as a single unit. Furthermore, an open slot 24 and screws provide a removable connection.

[0033] The material transport component includes a conveyor belt 1, and pulleys 25 are respectively connected at both ends of the conveyor belt 1. The material transport drive mechanism includes a second servo motor 26 linked to the pulley 25; a support frame 27 is provided between the two sets of pulleys 25, and the conveyor belt 1 is sleeved on the outer periphery of the support frame 27. Several groups of magnetic parts 28 are provided between the support frame 27 and the conveyor belt 1. The several groups of magnetic parts 28 are fixed to the support frame 27 by screws, and the several groups of magnetic parts 28 are arranged in sequence and equidistantly in a direction parallel to the conveyor belt 1.

[0034] After the material is transported to the conveyor belt 1, the magnetic part 28 will generate suction on the material so that the material will not shake left and right while following the conveyor belt 1, and the position of the material will not change easily. It should be noted that although the magnetic part 28 will not continue to follow the conveyor belt 1, the way it generates suction on the material will not affect the advancement of the conveyor belt 1, and the conveyor belt 1 can maintain normal operation; at the same time, the thrust of the left opening and closing plate 2 and the right opening and closing plate 3 is sufficient to overcome the suction of the magnetic part 28 to achieve sorting and separation of the materials. At the same time, the magnetic part 28 is designed separately from the conveyor belt 1 to facilitate the disassembly and assembly of the magnetic part 28. Furthermore, by controlling the speed of the second servo motor 26, the distance between each adjacent group of materials can be kept consistent, that is, equidistant feeding, so that the clamping mechanism can more accurately clamp several groups of materials at the same time.

[0035] Working Principle: Driven by a second servo motor 26, the conveyor belt 1 continuously transports material from one end between the left and right opening and closing plates 2 and 3. When the material reaches the predetermined position, the opening and closing drive mechanism (composed of the first servo motor, belt, pulley, screw, nut sleeve, slider, and other components) is activated, driving the left and right opening and closing plates 2 and 3 toward each other. The left pusher block 4 on the left opening and closing plate 2 cooperates with the right material receiving trough 5 on the right opening and closing plate 3 to form the first row of sorting troughs. Simultaneously, the right pusher block 7 on the right opening and closing plate 3 cooperates with the left material receiving trough (interval formed by the left pusher block 4) on the left opening and closing plate 2 to form the second row of sorting troughs. Guided by V-shaped guide grooves 8 and feed guide edges 10, the material is accurately pushed into these offset sorting troughs, achieving automatic sorting and separation. Furthermore, a magnetic element 28 ensures that the material remains stable during conveyance, preventing shaking or deviation. By controlling the speed of the second servo motor 26, the material can be fed at equal intervals.

Claims

1. An automatic sorting and feeding mechanism, comprising a material transport member and a material transport drive mechanism linked to the material transport member, further comprising a left opening and closing plate and a right opening and closing plate relatively distributed on both sides of the material transport member, wherein the left opening and closing plate and the right opening and closing plate are linked to an opening and closing drive mechanism capable of driving the left opening and closing plate to move closer to or apart from each other, characterized in that: The left opening and closing plate is located on a side facing the right opening and closing plate and is provided with several groups of left pushing blocks arranged at intervals from each other, and the right opening and closing plate is located on a side facing the left opening and closing plate and is provided with a group of right containing grooves corresponding to each group of left pushing blocks, a group of left containing grooves is provided between each two adjacent groups of left pushing blocks, and a group of right pushing blocks is provided between each two adjacent groups of right containing grooves; when the left opening and closing plate and the right opening and closing plate are close to each other, a group of first column sorting grooves is formed between each group of corresponding left pushing blocks and the right containing grooves, and a group of second column sorting grooves is formed between each group of right pushing blocks and the left containing grooves, and the first column sorting grooves and the second column sorting grooves are staggered with each other.

2. The automatic sorting and feeding mechanism according to claim 1, characterized in that: The ends of the left push block and the right push block are both provided with V-shaped guide grooves, the opening of the V-shaped guide groove of the left push block faces the right opening and closing plate, and the opening of the V-shaped guide groove of the right push block faces the left opening and closing plate, the inner ends of the left accommodating groove and the inner ends of the right accommodating groove are both provided with V-shaped positioning edges, and both sides of the outer ends of the left accommodating groove and the outer ends of the right accommodating groove are both provided with feed guide edges connected to the V-shaped positioning edges.

3. The automatic sorting and feeding mechanism according to claim 1, characterized in that: The opening and closing drive mechanism includes a mounting frame distributed below the material transporting member, the mounting frame is hinged with several groups of screw rods, the upper part of the screw rod is provided with a first thread section, the lower part is provided with a second thread section, the first thread section and the second thread section are symmetrical to each other, the screw rod is linked to a left nut sleeve through the first thread section, the screw rod is linked to a right nut sleeve through the second thread section, the left nut sleeve is linked to a left slider, the right nut sleeve is linked to a right slider, the left slider is linked to the left opening and closing plate, and the right slider is linked to the right opening and closing plate, the mounting frame is fixed with a slide rail, the left slider and the right slider are respectively slidably matched with the slide rail; the end of the screw rod is linked to a driven pulley, the driven pulley is linked to a belt, the belt is linked to a driving pulley, and the driving pulley is linked to a first servo motor fixed on the mounting frame.

4. The automatic sorting and feeding mechanism according to claim 3, characterized in that: The screw rod includes an upper rod body and a lower rod body, the first section of the thread is arranged on the outer circumference of the upper rod body, and the second section of the thread is arranged on the outer circumference of the lower rod body. A connecting ring is provided between the upper rod body and the lower rod body, one end of the upper rod body is hinged to the mounting frame, and the other end is inserted into the connecting ring, one end of the lower rod body is hinged to the mounting frame, and the other end is inserted into the connecting ring, and the side wall of the connecting ring is provided with an open groove running through the side wall, and the two sides of the open groove are detachably connected by screws.

5. The automatic sorting and feeding mechanism according to any one of claims 1 to 4, characterized in that: The material transporting member includes a conveyor belt, and pulleys are respectively linked to both ends of the conveyor belt. The material transport driving mechanism includes a second servo motor linked to the pulley; a support frame is provided between the two sets of pulleys, and the conveyor belt is sleeved on the outer periphery of the support frame. Several groups of magnetic parts are provided between the support frame and the conveyor belt, and the several groups of magnetic parts are fixed to the support frame by screws, and the several groups of magnetic parts are arranged in sequence and at equal distances along a direction parallel to the conveyor belt.

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