Magnet and rubber sleeve automatic separation device
Patent Information
- Application Number
- CN202522445880.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-18
AI Technical Summary
[0005]本实用新型的目的是解决以上缺陷,提供一种磁铁和胶套自动分离设备,以解决上述背景技术中如何提高磁铁和胶套自动分离效率,以增强生产效率的技术问题
[0021]倾斜下料部与转盘旋转方向的协同设计,通过机械止挡替代人工下料操作,确保磁铁从卡口稳定脱出并落入集料斗,提升下料可靠性。
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Figure CN224916756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of separation equipment, specifically to an automatic separation device for magnets and rubber sleeves. Background Technology
[0002] As the core rotating component of a motor, the rotor's performance directly affects the motor's operating efficiency, power density, and service life. With the development of high-precision motor manufacturing technology, higher requirements have been placed on the assembly accuracy, surface treatment quality, and production efficiency of rotor components. Especially in rotor manufacturing involving magnet electroplating processes, how to achieve high-precision protective assembly between the magnet and the iron core has become a key technical bottleneck restricting the industry's automation upgrade.
[0003] In the manufacturing process of motor rotors, the rotor mainly consists of a magnet and an iron core. The magnet typically undergoes electroplating to enhance its corrosion resistance and magnetic properties. However, if the iron core directly contacts the electroplating solution, the plating layer can easily adhere to its surface, causing the overall dimensional tolerances of the rotor to exceed limits. Therefore, existing technology employs an assembly method where a rubber sleeve is fitted over the iron core. This sleeve forms a physical isolation layer, preventing the electroplating solution from corroding the iron core. Specifically, this fitting assembly process requires a precise fit between the sleeve and the iron core. It must ensure that the sleeve does not detach during electroplating and can be easily separated after electroplating to allow the rotor to proceed to subsequent assembly processes.
[0004] However, current technologies primarily rely on manual operation for separating magnets from rubber sleeves. This requires operators to repeatedly perform high-intensity actions such as prying, pulling, and rotating for extended periods. This manual labor is labor-intensive, prone to errors, and inefficient, resulting in long separation times for individual units and significant fluctuations in overall production capacity, making it difficult to meet the demands of large-scale production. Furthermore, the lack of consistency in manual operation and the difficulty in precisely controlling the separation force and angle directly impact the quality of the finished rotor and the electroplating yield. Therefore, there is an urgent need to develop an automated magnet and rubber sleeve separation device to replace traditional manual operation and achieve efficient, precise, and low-damage automatic separation. Utility Model Content
[0005] The purpose of this invention is to overcome the above-mentioned defects and provide an automatic separation device for magnets and rubber sleeves, so as to solve the technical problem of how to improve the automatic separation efficiency of magnets and rubber sleeves in the above-mentioned background art and thus enhance production efficiency.
[0006] The objective of this utility model is achieved through the following means:
[0007] An automatic magnet and rubber sleeve separation device includes a cabinet with a worktable on the cabinet and a controller on the worktable. The worktable has a feeding station and a separation / unloading station. The feeding station is equipped with a vibratory feeder for cyclic feeding, and the separation / unloading station has a turntable and a separation device. The worktable is connected to the turntable via a rotary drive, which drives the turntable to rotate. The edge of the turntable has several slots for pairing and holding magnets. A feeding channel extends from the vibratory feeder to the turntable. The rotary drive rotates the turntable, causing the slots to... The separator is paired with the feeding channel in sequence. The separator has a conductive separation channel inside. The separation channel is located below the turntable and is arranged in an arc shape around the arc edge of the turntable. The separation channel has a spacer for separating the magnet and the rubber sleeve. The separator is connected to the rubber sleeve collection hopper. The worktable is connected to the discharge baffle. One end of the discharge baffle extends towards the turntable to form an inclined discharge part, so that the turntable drives the magnet to rotate and discharges the magnet through the bayonet through the contact with the inclined discharge part. The worktable is equipped with a magnet collection hopper for collecting the magnet.
[0008] Furthermore, as described above, the vibratory feeder has a circular material channel inside, one end of which is connected to the feeding channel. The vibration of the vibratory feeder allows the combination of magnet and rubber sleeve to enter the feeding channel along the circular material channel and be sequentially guided into the slot of the turntable from the feeding channel.
[0009] By connecting the spiral circulation channel and the feeding channel inside the vibratory feeder, the magnet-rubber sleeve assembly can be automatically and orderly arranged and continuously conveyed, replacing manual feeding operations. This solves the problems of low efficiency and fatigue associated with manual feeding, while also avoiding transmission failures caused by chaotic assembly postures, thus improving the automation and stability of the feeding process.
[0010] Furthermore, as described above, the rotary drive component includes a rotary seat and a drive motor. The rotary seat is mounted on the worktable, and a rotary shaft is connected to the bottom of the turntable. The rotary shaft is mounted through the rotary seat, and the drive motor is mounted on the bottom of the worktable. The output shaft of the drive motor is connected to one end of the rotary shaft via a coupling.
[0011] The rotary drive unit drives the turntable to rotate via a rotary seat and a drive motor. In conjunction with the periodic pairing of the bayonet and the feeding channel, it achieves precise positioning and automatic transmission of the magnet-rubber sleeve assembly in the turntable bayonet, solving the problems of inaccurate positioning and large efficiency fluctuations in manual transmission. It ensures the consistency of transmission at each station and provides a stable positioning basis for subsequent separation.
[0012] Furthermore, as described above, the separating device has a feeding port at one end near the feeding channel that communicates with the separating channel, and a discharging port at the other end of the separating device that communicates with the separating channel.
[0013] Further, as described above, the separation device includes a base plate, a first arc-shaped block, and a second arc-shaped block. The base plate is mounted on a workbench, and the first and second arc-shaped blocks are mounted on the base plate in pairs. A gap is left between the first and second arc-shaped blocks for conveying the magnet and the rubber sleeve, so that the gap between the first and second arc-shaped blocks forms a separation channel. A spacer is provided on the inner side of the second arc-shaped block, and a second separation part for separating the rubber sleeve is formed on the inner side of the second arc-shaped block. A support part is formed on the top of the first arc-shaped block that is flush with the spacer, and a first separation part that matches the second separation part is provided on the outer side of the first arc-shaped block.
[0014] The first arc-shaped block and the second arc-shaped block are paired to form a separation channel. Through the arc-shaped protrusion structure of the inner spacing part and the first separation part and the second separation part, the magnet and the rubber sleeve are gradually separated in the separation channel. This solves the problems of difficulty in controlling the separation angle and poor consistency in manual separation. By replacing manual experience operation with structural design, the separation accuracy and product quality stability are improved.
[0015] The separation channel is arc-shaped and surrounds the edge of the turntable. Together with the internal partition and the first and second separation parts, it physically separates the magnet and the rubber sleeve. The guiding nature of the arc-shaped channel enables the two to separate naturally during the movement, replacing manual prying and pulling, which are high-intensity operations. This solves the problems of difficulty in controlling the force of manual separation and easy damage to the product. At the same time, the arc-shaped structure reduces mechanical impact during the separation process and protects the integrity of the product.
[0016] Furthermore, as described above, both the first separation section and the second separation section are arranged in an arc shape, rising from one end near the feeding channel to the other end away from the feeding channel.
[0017] The first and second separation sections adopt an arc-shaped protrusion design that extends from high to low. Utilizing the rotational guidance of the turntable, the magnet and the rubber sleeve are gradually separated during the rotation process, providing consistent separation and solving the problem of product surface damage caused by manual separation. At the same time, the arc-shaped structure conforms to the natural transition of the motion trajectory, reducing separation resistance and improving separation smoothness.
[0018] Furthermore, as described above, the second arc-shaped block is provided with a through hole for inserting the rubber sleeve collecting hopper, so that the rubber sleeve collecting hopper extends into the separation channel through the through hole.
[0019] The through-hole of the second arc-shaped block and the direct connection structure between the rubber sleeve and the collecting hopper enable automatic collection of the rubber sleeve after separation, improving the degree of automation and reducing manual processing steps.
[0020] Furthermore, as described above, the inclined feeding part extends inclinedly from one end near the turntable in the direction of rotation of the turntable. The turntable drives the magnet to contact the inclined feeding part, so that the magnet passes through the stop of the inclined feeding part and is fed from the slot.
[0021] The coordinated design of the inclined feeding section and the rotation direction of the turntable, through mechanical stops to replace manual feeding operations, ensures that the magnet stably detaches from the clamp and falls into the collection hopper, thus improving feeding reliability.
[0022] The beneficial effects of this utility model are as follows: By coordinating the operation of vibratory feeder feeding, turntable rotation drive, and separation device, continuous automated processing of magnets and rubber sleeves from feeding, separation to collection is achieved, replacing manual high-intensity operations such as prying, pulling, and rotating, significantly reducing the labor intensity of operators, and avoiding quality fluctuations caused by human operation errors. The locking slots on the edge of the turntable are precisely matched with the vibratory feeder feeding channel to ensure stable magnet holding; the interval part in the separation channel, combined with the arc-shaped continuous structure, achieves physical separation of magnets and rubber sleeves through the mechanical guidance of rotation, allowing the rubber sleeves to separate and fall off the magnets and fall into the rubber sleeve collection hopper for collection, improving the consistency of separation operation. The rotation drive component drives the turntable to rotate, so that the locking slots are matched with the feeding channel in sequence. The inclined feeding part of the discharge baffle assists the magnets to automatically fall off the locking slots. With the diversion collection of magnet collection hopper and rubber sleeve collection hopper, it meets the needs of large-scale production, improves the automated separation efficiency of magnets and rubber sleeves, and enhances production efficiency. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure in the first direction of this embodiment;
[0024] Figure 2 This is a schematic diagram of the overall structure in the second direction of this embodiment;
[0025] Figure 3 This is a schematic diagram of the connection structure between the turntable and the separation device in this embodiment;
[0026] Figure 4 This is a schematic diagram of the first separation of the magnet and the rubber sleeve in this embodiment;
[0027] Figure 5 This is a schematic diagram of the rotary drive component in this embodiment;
[0028] Figure 6 This is a schematic diagram of the separation device in this embodiment;
[0029] Figure 7 This is a schematic diagram of the second separation of the magnet and the rubber sleeve in this embodiment;
[0030] Figure 8 This is an exploded view of the separation device in this embodiment;
[0031] The reference numerals in the figure are as follows:
[0032] 100 - Cabinet, 101 - Workbench, 102 - Controller;
[0033] 200 - Vibratory feeder, 201 - Circulating material channel, 202 - Feeding channel;
[0034] 300 - turntable, 301 - bayonet;
[0035] 400-Separation device, 401-Separation channel, 402-Interval part, 403-Feeding port, 404-Discharging port, 405-Bottom plate, 406-First arc-shaped block, 407-Second arc-shaped block, 408-First separation part, 409-Support part, 410-Second separation part, 411-Through hole;
[0036] 500 - Rotary drive component, 501 - Rotary base, 502 - Drive motor, 503 - Rotary shaft;
[0037] 600 - Feed baffle, 601 - Inclined feeding section;
[0038] 700 - Rubber sleeve hopper, 800 - Magnet hopper, 900 - Magnet, 1000 - Rubber sleeve. Detailed Implementation
[0039] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0040] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.
[0041] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme 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 application.
[0042] In this embodiment, refer to Figures 1-8The present invention relates to an automatic magnet and rubber sleeve separation device, comprising a cabinet 100, a workbench 101 mounted on the cabinet 100, and a controller 102 mounted on the workbench 101. The workbench 101 has a loading station and a separation / unloading station. The loading station is equipped with a vibratory feeder 200 for cyclic loading, and the separation / unloading station is equipped with a turntable 300 and a separation device 400. The workbench 101 is connected to the turntable 300 via a rotary drive 500, which drives the turntable 300 to rotate. The edge of the turntable 300 has several slots 301 for pairing and holding magnets. The vibratory feeder 200 extends towards the turntable 300 via a loading channel 202. The rotary drive 500 drives the rotation of the turntable 300 to hold the magnets. The opening 301 is paired with the feeding channel 202 in sequence. The separation device 400 has a conductive separation channel 401 inside. The separation channel 401 is located below the turntable 300 and is arranged in an arc shape around the arc edge of the turntable 300. The separation channel 401 has a spacer 402 inside for separating the magnet and the rubber sleeve. The separation device 400 is connected to the rubber sleeve collection hopper 700. The worktable 101 is connected to the discharge baffle 600. One end of the discharge baffle 600 extends towards the turntable 300 to form an inclined discharge part 601, so that the turntable 300 drives the magnet to rotate and discharges the magnet through the slot 301 through contact with the inclined discharge part 601. The worktable 101 is provided with a magnet collection hopper 800 for collecting the magnet.
[0043] The vibratory feeder 200 has a circular material channel 201 arranged around it. One end of the circular material channel 201 is connected to the feeding channel 202. The vibration of the vibratory feeder 200 allows the combination of magnet and rubber sleeve to enter the feeding channel 202 along the circular material channel 201 and be sequentially guided from the feeding channel 202 into the slot 301 of the turntable 300.
[0044] By connecting the spiral circulation channel 201 and the feeding channel 202 inside the vibratory feeder 200, the magnet-rubber sleeve assembly can be automatically and orderly arranged and continuously conveyed, replacing manual feeding operations. This solves the problems of low efficiency and fatigue associated with manual feeding, while also avoiding transmission failures caused by chaotic assembly postures, thus improving the automation and stability of the feeding process.
[0045] The rotary drive component 500 includes a rotary seat 501 and a drive motor 502. The rotary seat 501 is mounted on the worktable 101. A rotary shaft 503 is connected to the bottom of the turntable 300. The rotary shaft 503 is mounted through the rotary seat 501. The drive motor 502 is mounted on the bottom of the worktable 101, and the output shaft of the drive motor 502 is connected to one end of the rotary shaft 503 through a coupling.
[0046] The rotary drive component 500 drives the turntable 300 to rotate via the rotary seat 501 and the drive motor 502. With the periodic pairing of the bayonet 301 and the feeding channel 202, the magnet-rubber sleeve assembly is accurately positioned and automatically transferred in the bayonet 301 of the turntable 300. This solves the problems of inaccurate positioning and large efficiency fluctuations in manual transfer, ensures the consistency of transfer at each station, and provides a stable positioning basis for subsequent separation.
[0047] The separation device 400 has a feeding port 403 at one end near the feeding channel 202, which communicates with the separation channel 401, and a discharging port 404 at the other end, which communicates with the separation channel 401.
[0048] The separation device 400 includes a base plate 405, a first arc-shaped block 406, and a second arc-shaped block 407. The base plate 405 is mounted on the workbench 101. The first arc-shaped block 406 and the second arc-shaped block 407 are paired and mounted on the base plate 405. A gap is left between the first arc-shaped block 406 and the second arc-shaped block 407 for conveying magnets and rubber sleeves, so that the gap between the first arc-shaped block 406 and the second arc-shaped block 407 forms a separation channel 401. A spacer 402 is provided on the inner side of the second arc-shaped block 407. A second separation part 410 for separating the rubber sleeve is formed on the inner side of the second arc-shaped block 407. A support part 409 is formed on the top of the first arc-shaped block 406, which is flush with the spacer 402. A first separation part 408 is provided on the outer side of the first arc-shaped block 406, which is paired with the second separation part 410.
[0049] The first arc-shaped block 406 and the second arc-shaped block 407 are paired to form a separation channel 401. Through the arc-shaped protrusion structure of the inner spacing part 402 and the first separation part 408 and the second separation part 410, the magnet and the rubber sleeve are gradually separated in the separation channel 401, which solves the problems of difficult control of manual separation angle and poor consistency. By replacing manual experience operation with structural design, the separation accuracy and product quality stability are improved.
[0050] The separation channel 401 is arc-shaped and surrounds the edge of the turntable 300. Together with the internal partition 402 and the first separation part 408 and the second separation part 410, it physically separates the magnet and the rubber sleeve. The guiding nature of the arc-shaped channel enables the two to separate naturally during the movement process, replacing manual prying and pulling, which are high-intensity operations. This solves the problems of difficulty in controlling the force of manual separation and easy damage to the product. At the same time, the arc-shaped structure reduces mechanical impact during the separation process and protects the integrity of the product.
[0051] Specifically, the design of the spacer 402 and the support 409 provides mechanical support to the magnet during the separation process. At the same time, when rotating to separate, the rubber sleeve separates from the magnet through the arc-shaped first separation part 408 and second separation part 410.
[0052] Both the first separation section 408 and the second separation section 410 are arranged in an arc shape from one end near the feeding channel 202 to the other end away from the feeding channel 202, moving from high to low.
[0053] The first separation section 408 and the second separation section 410 adopt an arc-shaped protrusion design that extends from high to low. Utilizing the rotational guidance of the turntable 300, the magnet and the rubber sleeve are gradually separated during the rotation process, providing consistent separation and solving the problem that manual separation can easily lead to damage to the product surface. At the same time, the arc-shaped structure conforms to the natural transition of the motion trajectory, reducing separation resistance and improving separation smoothness.
[0054] The second arc-shaped block 407 has a through hole 411 for passing through the rubber sleeve collecting hopper 700, so that the rubber sleeve collecting hopper 700 extends into the separation channel 401 through the through hole 411.
[0055] The through hole 411 of the second arc-shaped block 407 and the direct connection structure with the rubber sleeve collection hopper 700 realize the automatic collection of the rubber sleeve after separation, improve the degree of automation and reduce manual processing steps.
[0056] The inclined feeding part 601 extends inclinedly from one end near the turntable 300 in the direction of rotation of the turntable 300. The turntable 300 drives the magnet to contact the inclined feeding part 601, so that the magnet passes through the stop of the inclined feeding part 601 and is fed from the slot 301.
[0057] The coordinated design of the inclined feeding section 601 and the rotation direction of the turntable 300, through mechanical stops to replace manual feeding operations, ensures that the magnet stably detaches from the bayonet 301 and falls into the collection hopper, thus improving feeding reliability.
[0058] The specific operating principle in this embodiment is as follows:
[0059] The assembly of magnet 900 and rubber sleeve 1000 is placed on vibratory feeder 200. Vibration of vibratory feeder 200 causes the assembly to circulate along the feed channel 202 towards the turntable 300. Driven by motor 502, the turntable 300 rotates, aligning the slots 301 on the turntable 300 with the feed channel 202. The magnet of the assembly is held in place by the slots 301. The rotation of motor 502 drives the turntable 300 to move the assembly towards the separation device 400, passing through the spacer 402 and support. The configuration of part 409 provides a support interval for the magnet, so that the boss portion of the magnet is located at the top of the spacer part 402 and the support part 409, while the rubber sleeve is located at the bottom of the spacer part 402 and the support part 409. When the assembly is rotated into the separation channel 401 by the turntable 300, the spacer part 402 and the support part 409 can always provide support for the boss portion of the magnet. The rubber sleeve is separated from the magnet from high to low along the axial direction of the magnet by contact between the arc-shaped first separation part 408 and the second separation part 410, thus completing the separation and detachment of the rubber sleeve 1000 from the magnet 900.
[0060] In summary, through the cyclic feeding of the vibratory feeder 200, the rotation drive of the turntable 300, and the coordinated operation of the separation device 400, continuous automated processing of magnets and rubber sleeves from feeding, separation, to collection is achieved. This replaces manual high-intensity operations such as prying, pulling, and rotating, significantly reducing the labor intensity of operators and avoiding quality fluctuations caused by human error. The locking slot 301 on the edge of the turntable 300 is precisely matched with the feeding channel 202 of the vibratory feeder 200 to ensure stable magnet holding. The mechanical guidance of rotation separates the magnet and rubber sleeve through the separation channel 401, causing the rubber sleeve to detach from the magnet and fall into the rubber sleeve collection hopper 700 for collection, improving the consistency of the separation operation. Combined with the diversion collection of the magnet collection hopper 800 and the rubber sleeve collection hopper 700, this meets the needs of large-scale production, improves the automated separation efficiency of magnets and rubber sleeves, and enhances production efficiency.
[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.
Claims
1. An automatic separation device for magnets and rubber sleeves, comprising a cabinet, a workbench on the cabinet, and a controller on the workbench, characterized in that: The workbench is equipped with a feeding station and a separating / unloading station. The feeding station has a vibratory feeder for cyclic feeding, and the separating / unloading station has a turntable and a separating device. The workbench is connected to the turntable via a rotary drive, which drives the turntable to rotate. The edge of the turntable has several slots for pairing and holding magnets. The feeding channel extends from the vibratory feeder to the turntable. The rotary drive drives the turntable to rotate, causing the slots to pair with the feeding channel in sequence. The separating device has a conductive separating channel inside, located below the turntable. The separating channel is arc-shaped and paired around the arc edge of the turntable. The separating channel has a spacer for separating the magnets and the rubber sleeves. The separating device is connected to a rubber sleeve collection hopper. A discharging baffle is connected to the workbench. One end of the discharging baffle extends towards the turntable to form an inclined discharging section, causing the turntable to rotate and discharge the magnets through the slots by contacting the inclined discharging section. The workbench is equipped with a magnet collection hopper for collecting the magnets.
2. The automatic separation device for magnets and rubber sleeves according to claim 1, characterized in that: The vibratory feeder has a circular material channel inside, one end of which is connected to the feeding channel. The vibration of the vibratory feeder allows the combination of magnet and rubber sleeve to enter the feeding channel along the circular material channel and be sequentially guided into the slot of the turntable from the feeding channel.
3. The automatic separation device for magnets and rubber sleeves according to claim 1, characterized in that: The rotary drive includes a rotary seat and a drive motor. The rotary seat is mounted on the worktable, and a rotary shaft is connected to the bottom of the turntable. The rotary shaft is mounted on the rotary seat. The drive motor is mounted on the bottom of the worktable, and the output shaft of the drive motor is connected to one end of the rotary shaft through a coupling.
4. The automatic separation device for magnets and rubber sleeves according to claim 1, characterized in that: The separating device has a feeding port at one end near the feeding channel that communicates with the separating channel, and a discharging port at the other end of the separating device that communicates with the separating channel.
5. An automatic magnet and rubber sleeve separation device according to any one of claims 1-4, characterized in that: The separation device includes a base plate, a first arc-shaped block, and a second arc-shaped block. The base plate is mounted on a workbench, and the first and second arc-shaped blocks are mounted on the base plate in pairs. A gap is left between the first and second arc-shaped blocks for conveying magnets and rubber sleeves, so that the gap between the first and second arc-shaped blocks forms a separation channel. A spacer is provided on the inner side of the second arc-shaped block, and a second separation part for separating the rubber sleeve is formed on the inner side of the second arc-shaped block. A support part is formed on the top of the first arc-shaped block that is flush with the spacer, and a first separation part that matches the second separation part is provided on the outer side of the first arc-shaped block.
6. The automatic separation device for magnets and rubber sleeves according to claim 5, characterized in that: Both the first separation section and the second separation section are arranged in an arc shape, with one end closer to the feeding channel and the other end farther away from the feeding channel, protruding from high to low.
7. The automatic separation device for magnets and rubber sleeves according to claim 5, characterized in that: The second arc-shaped block has a through hole for inserting the rubber sleeve collecting hopper, so that the rubber sleeve collecting hopper extends into the separation channel through the through hole.
8. An automatic magnet and rubber sleeve separation device according to any one of claims 1-4, characterized in that: The inclined feeding section extends inclinedly from one end near the turntable in the direction of rotation of the turntable. The turntable drives the magnet to contact the inclined feeding section, so that the magnet passes through the stop of the inclined feeding section and is fed from the slot.