Magnet press-in device

By designing a magnet pressing device for electronic cigarette production, the problems of high difficulty in installing and low production efficiency of magnets are solved, and the magnets are automated, precise and efficiently installed, and the production efficiency and product quality are improved.

CN222898395UActive Publication Date: 2025-05-27CONWEAL TECH
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Patent Information

Application Number
CN202421803371.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-29
Publication Date
2025-05-27
Estimated Expiration
2034-07-29

AI Technical Summary

Technical Problem

In the production process of electronic cigarettes, the installation and operation of magnets is difficult, resulting in low production efficiency. In particular, multiple magnets are absorbed into each other in the material box, which increases the complexity of operation.

Method used

A magnet pressing device is designed, including a blanking channel, a feeding platform, a feeding paddle and a pressing rod. Through an automated feeding and pressing process, the magnet is accurately installed.

Benefits of technology

Through the automated magnet material separation and pressing process, manual operation is reduced, production efficiency is improved, the accuracy and consistency of magnet installation is ensured, and production speed and product quality are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of electronic cigarette production, and relates to a magnet press-in device, which comprises a blanking channel, a press-in device and a pressing device, the material distributing platform is located below the material falling channel, a material distributing sliding groove corresponding to the material falling channel is formed in the surface of the material distributing platform, and a through hole corresponding to an external workpiece mounting hole is formed in one end of the material distributing sliding groove; the material distribution shifting piece is located between the material distribution platform and the material falling channel, and the material distribution shifting piece is driven by a material distribution driving device to move in a reciprocating mode in the direction of the material distribution sliding groove; the pressing rod is installed above the through hole in a sliding mode, the pressing rod can enter the through hole, and the pressing rod is driven by a pressing-in driving device to move up and down; wherein the material distribution shifting piece is used for driving the magnet in the material distribution sliding groove to enter the through hole, and the pressing rod is used for pressing the magnet in the through hole into an external workpiece mounting hole.
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Description

Technical Field

[0001] The utility model belongs to the technical field of electronic cigarette production, and relates to a magnet pressing device. Background Art

[0002] In order to simplify the usage process, the current electronic cigarette makes the oil storage chamber and the atomizer into an integrated consumable. The integrated atomizer is detachably connected to the cigarette rod directly. The atomizer and the cigarette rod are often fixed by magnetic force.

[0003] During the production process, it is necessary to install magnets on the cigarette rod and the atomizer. However, the magnets are small in volume, and multiple magnets will adsorb each other in the material box. If the worker wears gloves, the operation is difficult and the production efficiency is not high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a magnet pressing device aiming at the deficiencies of the prior art, which can automatically complete the material distribution and pressing of the magnets, and improve the production efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A magnet pressing device, comprising:

[0007] A blanking channel, in which magnets are stacked;

[0008] A material distribution platform, located below the blanking channel. The surface of the material distribution platform is provided with a material distribution chute corresponding to the blanking channel, and one end of the material distribution chute is provided with a through hole corresponding to the workpiece mounting hole outside;

[0009] A material distribution dial, located between the material distribution platform and the blanking channel. The material distribution dial is driven by a material distribution driving device to reciprocate along the direction of the material distribution chute;

[0010] A pressing rod, slidably installed above the through hole. The pressing rod can enter the through hole, and the pressing rod is driven by a pressing driving device to move up and down;

[0011] Wherein, the material distribution dial is used to drive the magnets in the material distribution chute into the through hole, and the pressing rod is used to press the magnets in the through hole into the workpiece mounting hole outside.

[0012] Further, the magnet pressing device is installed on a sliding platform, and the sliding platform is driven by a lifting device to lift.

[0013] Further, the sum of the depth of the material distribution chute and the thickness of the material distribution dial is less than the thickness of a single magnet.

[0014] Further, the gap between the discharge port at the bottom end of the blanking channel and the bottom end of the material distribution chute is less than the thickness of two stacked magnets.

[0015] Further, a material shortage sensor is provided on the side of the blanking channel.

[0016] Further, a magnet placement fixture is provided above the blanking channel, and the magnet placement fixture is slidably installed above the blanking channel;

[0017] A magnet storage channel corresponding to the blanking channel is provided in the magnet placement fixture, and magnets are stacked in the magnet storage channel;

[0018] Among them, a feeding hole is provided at the top end of the blanking channel, and a feeding hole for the magnets to pass through is provided at the bottom end of the magnet storage channel. When the feeding hole of the magnet storage channel is communicated with the feeding hole of the blanking channel, the magnets in the magnet storage channel fall into the blanking channel.

[0019] Further, a plurality of magnet storage channels corresponding to the blanking channel are provided in the magnet placement fixture along the sliding direction;

[0020] A limiting block is provided in front of the magnet placement fixture, and a through groove is provided on the limiting block. The through groove is used to communicate the feeding hole and the feeding hole;

[0021] The magnet placement fixture can be driven by a feeding driving device to align the magnet storage channels with the through groove in sequence.

[0022] Applying the technical solution of the present utility model, the magnet pressing device can automatically complete the processes of magnet material distribution and pressing into the workpiece, reducing manual operation and improving production efficiency. The design of the material distribution chute and the through hole ensures that the magnets can accurately enter the installation holes of the workpiece, reducing human errors. The reciprocating motion design of the material distribution paddle and the pressing rod enables the processes of magnet material distribution and pressing to be fast and continuous, greatly improving the production speed.

[0023] Other features and advantages of the utility model will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained by the structures specifically pointed out in the written specification and the drawings. Description of the Drawings

[0024] The present utility model will be described in detail below with reference to the drawings to make the above advantages of the present utility model more clear.

[0025] Figure 1 is a schematic diagram of a magnet pressing device of the present utility model;

[0026] Figure 2It is a front schematic view of a magnet pressing device of the present utility model;

[0027] Figure 3 It is an exploded view of a magnet pressing device of the present utility model;

[0028] Figure 4 It is a sectional view of a magnet pressing device of the present utility model. Detailed implementation manners

[0029] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0032] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Refer to the attached Figures 1-4 As shown, a magnet pressing device includes:

[0034] A blanking channel 100, in which magnets are stacked;

[0035] The material distribution platform 200 is located below the blanking channel 100. A material distribution chute 210 corresponding to the blanking channel 100 is provided on the surface of the material distribution platform 200. One end of the material distribution chute 210 is provided with a through hole 220 corresponding to the external workpiece mounting hole;

[0036] The material distribution paddle 300 is located between the material distribution platform 200 and the blanking channel 100. The material distribution paddle 300 is driven by a material distribution driving device 310 to reciprocate along the direction of the material distribution chute 210;

[0037] The pressing rod 400 is slidably installed above the through hole 220. The pressing rod 400 can enter the through hole 220. The pressing rod 400 is driven by a pressing driving device to move up and down;

[0038] Wherein, the material distribution paddle 300 is used to drive the magnet in the material distribution chute 210 into the through hole 220, and the pressing rod 400 is used to press the magnet in the through hole 220 into the external workpiece mounting hole.

[0039] The design concept of this magnet pressing device is to achieve automatic, precise and high-efficiency installation of magnets. Through a structured design, the processes of magnet material distribution and pressing are automated, reducing manual operations, improving production efficiency, and ensuring the accuracy and consistency of magnet installation. Through components such as the material distribution platform 200, the material distribution paddle 300 and the pressing rod 400, automatic material distribution and pressing of magnets are realized. The blanking channel 100, the material distribution platform 200 and the pressing mechanism are designed compactly, occupying a small space and being convenient to be integrated into the existing production line. Through the material distribution driving device 310 and the pressing driving device, precise control of the position and pressure of the magnet is realized to ensure the correct installation of the magnet.

[0040] Magnets are stacked in the blanking channel 100 manually or automatically. The magnets slide along the blanking channel 100 onto the material distribution platform 200. A material distribution chute 210 corresponding to the blanking channel 100 is provided on the surface of the material distribution platform 200. When the material distribution driving device 310 is started, the material distribution paddle 300 reciprocates along the direction of the material distribution chute 210, pushing the magnets one by one from the blanking channel 100 into the material distribution chute 210 and driving the magnets to move to the through hole 220 at the end of the material distribution chute 210. The pressing rod 400 is installed above the through hole 220 and its up and down displacement is controlled by the pressing driving device. When the magnet is pushed into the through hole 220 by the material distribution paddle 300, the pressing driving device is started and the pressing rod 400 moves down to press the magnet into the mounting hole of the external workpiece. After the pressing is completed, the material distribution paddle 300 and the pressing rod 400 are reset to prepare for the next material distribution and pressing operation. The whole process is automatically controlled and repeated until all magnets are installed.

[0041] The process of separating and pressing the magnets does not require manual intervention, with a high degree of automation, reducing labor costs and human errors. Through automated equipment, the operation process is simplified, enabling operators to focus more on monitoring and maintaining the operation of the equipment. By controlling the separation and pressing of the magnets, the adsorption between the magnets is effectively reduced, avoiding chaos during operation. The rapid reciprocating motion of the separation paddle 300 and the pressing rod 400 significantly improves the production speed and shortens the production cycle.

[0042] In this embodiment, the magnet pressing device is installed on the sliding platform 500, and the sliding platform 500 is driven by a sliding lifting device 510 to move up and down. Installing the magnet pressing device on the sliding platform 500, through the cooperation of the sliding lifting device 510 and the sliding platform 500, enables the magnet pressing device to accurately position above the workpiece for automated separation and pressing operations of the magnets. The design purpose is to achieve efficient, precise, and automated magnet installation, improving production efficiency and product quality.

[0043] The workpiece is transported to the designated position through the assembly line and stays below the operation area of the magnet pressing device. The sliding platform 500 is driven by the sliding lifting device 510 to move up and down, enabling the magnet pressing device to move directly above the workpiece to ensure that the magnet can be accurately pressed into the designated position of the workpiece. The magnet slides from the blanking channel 100 into the separation chute 210 of the separation platform 200. The separation paddle 300 is driven by a separation driving device 310 to push the magnets one by one to the through hole 220 at the end of the separation chute 210. The pressing rod 400 is driven by a pressing driving device to move downward and press the magnet from the through hole 220 of the separation chute 210 into the installation hole of the workpiece, completing the installation of the magnet. The pressing rod 400 and the separation paddle 300 return to their original positions, preparing for the next separation and pressing operation. The sliding platform 500 drives the magnet pressing device back to the initial position or moves above the next workpiece, repeating the above operations.

[0044] The design of the sliding platform 500 and the sliding lifting device 510 enables the magnet pressing device to adapt to assembly lines and workpieces of different heights, improving the applicability and flexibility of the equipment. The entire process does not require manual intervention, achieving full automation from workpiece transportation to magnet installation, reducing labor costs and human errors. The automated docking and installation process shortens the production cycle and improves production efficiency.

[0045] In this embodiment, the sum of the depth of the material distribution chute 210 and the thickness of the material distribution paddle 300 is less than the thickness of a single magnet. The key to the design is to ensure that the magnet can be smoothly and accurately distributed and pressed into the workpiece. To achieve this goal, the sum of the depth of the material distribution chute 210 and the thickness of the material distribution paddle 300 is designed to be less than the thickness of a single magnet. This design idea is to ensure that the magnet can remain stable during the material distribution process and avoid overlapping, ensuring that only one magnet enters the through hole 220 for pressing operation each time the material is distributed.

[0046] The magnets are stacked in an orderly manner in the blanking channel 100. The material distribution paddle 300 moves within the material distribution chute 210. Since the sum of the chute depth and the paddle thickness is less than the magnet thickness, the paddle can stably push a single magnet. The material distribution paddle 300 separates the topmost magnet from the stack. Due to precise size control, the magnet will not roll or slide within the chute. The separated magnet is stably pushed to the position of the through hole 220, ready for the pressing operation.

[0047] The sum of the depth of the material distribution chute 210 and the thickness of the material distribution paddle 300 is less than the thickness of a single magnet, ensuring that only one magnet can enter the material distribution chute 210 during each material distribution process, avoiding uneven material distribution caused by magnet overlap. By precisely controlling the depth of the material distribution chute 210 and the thickness of the material distribution paddle 300, the accuracy of each material distribution process is ensured, improving the accuracy of magnet installation. The automation realizes the material distribution and pressing of the magnet, reduces manual operation, and improves production efficiency. By reducing the uncertainty of the magnet during the material distribution process, the reliability of the entire magnet pressing device is improved.

[0048] In this embodiment, the gap between the discharge port at the bottom of the blanking channel 100 and the bottom of the material distribution chute 210 is less than the thickness of two stacked magnets. The key to the design is to ensure that the magnet can smoothly and accurately enter the material distribution chute 210 during the material distribution process. For this purpose, the gap between the discharge port at the bottom of the blanking channel 100 and the bottom of the material distribution chute 210 is designed to be less than the thickness of two stacked magnets. This design idea is to prevent multiple magnets from entering the material distribution chute 210 simultaneously, thus ensuring that only one magnet can enter the material distribution chute 210 during each material distribution process, guaranteeing the accuracy and stability of the material distribution.

[0049] The magnet slides along the blanking channel 100 into the material distribution chute 210 of the material distribution platform 200. The gap between the discharge port at the bottom of the blanking channel 100 and the bottom of the material distribution chute 210 is less than the thickness of two stacked magnets, ensuring that only one magnet can enter the material distribution chute 210 each time, avoiding jamming or uneven material distribution caused by multiple magnets entering the material distribution chute 210 simultaneously. The material distribution paddle 300 is driven by the material distribution driving device 310 and reciprocates along the direction of the material distribution chute 210, pushing the magnets one by one from the through hole 220 at the end of the material distribution chute 210 into the pressing position.

[0050] The gap between the discharge port at the bottom of the blanking channel 100 and the bottom of the material distribution chute 210 is designed to be less than the thickness of two stacked magnets, ensuring that only one magnet enters the material distribution chute 210 each time, and avoiding problems such as material jamming or overlapping caused by multiple magnets entering simultaneously. By precisely controlling the gap between the discharge port and the bottom of the material distribution chute 210, the accuracy of each material distribution process is ensured, and the accuracy and stability of magnet installation are improved. The precise design of the gap ensures that the magnets can be continuously transferred from the blanking channel 100 to the material distribution chute 210, reducing the risk of production interruption. Automatic material distribution and pressing of the magnets are realized, reducing manual operation and improving production efficiency.

[0051] In this embodiment, a material shortage sensor 600 is provided on the side of the blanking channel 100. To ensure the continuity of magnet supply and the stability of the production process, it is designed to have a material shortage sensor 600 on the side of the blanking channel 100. By using the material shortage sensor 600 to continuously monitor the number of magnets in the blanking channel 100, when the number of magnets is insufficient, the sensor sends a signal to remind or trigger a replenishment mechanism to ensure the normal operation of the production line. This can avoid production interruption caused by magnet shortage and improve production efficiency and reliability.

[0052] The material shortage sensor 600 is installed on the side of the blanking channel 100 and can continuously detect the number of magnets in the channel. When the number of magnets is lower than the preset threshold, the sensor will send a signal and feedback it to the control system. After receiving the material shortage signal, the control system can automatically issue an alarm to prompt the operator to add materials. By adding materials in a timely manner, the continuity of magnet supply during the production process is ensured, and production interruption caused by material shortage is avoided.

[0053] By continuously monitoring and timely replenishing magnets, production interruption caused by material shortage is reduced, and production efficiency is improved. The introduction of the material shortage sensor 600 realizes automatic material monitoring, reduces the need for manual inspection, and improves the automation level.

[0054] In this embodiment, a magnet placement jig 700 is provided above the blanking channel 100, and the magnet placement jig 700 is slidably installed above the blanking channel 100;

[0055] The magnet placement jig 700 is provided with a magnet storage channel 710 corresponding to the blanking channel 100, and magnets are stacked in the magnet storage channel 710;

[0056] Among them, a feeding hole 110 is provided at the top of the blanking channel 100, and a feeding hole 730 for the magnet to pass through is provided at the bottom of the magnet storage channel 710. When the feeding hole 730 of the magnet storage channel 710 is communicated with the feeding hole 110 of the blanking channel 100, the magnet in the magnet storage channel 710 falls into the blanking channel 100. In order to ensure the continuous supply of magnets, a magnet placement fixture 700 is designed, and this fixture is slidably installed above the blanking channel 100. A magnet storage channel 710 corresponding to the blanking channel 100 is provided in the magnet placement fixture 700, and the operator places the magnets in the storage channel in advance. When the number of magnets in the blanking channel 100 is insufficient, the magnets are automatically replenished into the blanking channel 100 through the magnet storage channel 710, ensuring the continuity and stability of the magnet supply during the production process.

[0057] Before production or during the production gap, the operator manually places the magnets into the magnet storage channel 710 of the magnet placement fixture 700 for preloading. When the number of magnets in the blanking channel 100 decreases to a certain threshold, the feeding mechanism is triggered, and the feeding hole 730 at the bottom of the magnet storage channel 710 is communicated with the feeding hole 110 at the top of the blanking channel 100. The magnets stored in the magnet storage channel 710 automatically fall into the blanking channel 100 through the feeding hole 730 to replenish the number of magnets. Through the automatic feeding function of the magnet placement fixture 700, the continuous supply of magnets in the blanking channel 100 is ensured, supporting the continuous operation of the production line.

[0058] Through the preloading and automatic feeding mechanisms, the need for manual frequent replenishment of magnets is reduced, and the production efficiency is improved. Automatic feeding reduces production interruptions caused by insufficient magnets and maintains the continuity of production. The operator only needs to place the magnets in the storage channel of the fixture without directly operating on the production line, simplifying the operation process.

[0059] In this embodiment, a plurality of magnet storage channels 710 corresponding to the blanking channel 100 are provided in the magnet placement fixture 700 along the sliding direction;

[0060] A limiting block is provided in front of the magnet placement fixture 700, and a through groove 800 is provided on the limiting block, and the through groove 800 is used to communicate the feeding hole 110 and the feeding hole 730;

[0061] The magnet placement fixture 700 can be driven by a feeding driving device to align the magnet storage channels 710 with the through groove 800 in sequence. Through the multiple magnet storage channels 710 of the magnet placement fixture 700, in cooperation with the limiting block and the feeding driving device, batch storage and automatic feeding of magnets are realized. Each time feeding is required, the feeding driving device drives the magnet placement fixture 700 to sequentially communicate different magnet storage channels 710 with the blanking channel 100, ensuring the continuous supply of magnets and the stability of the production process.

[0062] The magnets are manually placed in advance in multiple magnet storage channels 710 of the magnet placement jig 700. The magnet storage channels 710 are arranged along the sliding direction and can store a large number of magnets. When the number of magnets in the blanking channel 100 is insufficient, the feeding drive device is activated to drive the magnet placement jig 700 to slide, so that the feeding hole 730 of one of the magnet storage channels 710 communicates with the feeding hole 110 of the blanking channel 100. The feeding drive device drives the magnet placement jig 700 to align one of the magnet storage channels 710 with the through groove 800 on the limit block. The magnets in the storage channel flow into the feeding hole 110 of the blanking channel 100 through the through groove 800 to supplement the number of magnets in the blanking channel 100. The feeding drive device continues to drive the jig so that the next storage channel is aligned with the through groove 800, and the cycle is repeated to achieve continuous feeding.

[0063] The magnet placement jig 700 can store a large number of magnets, reducing the feeding frequency and improving the production efficiency. Through the feeding drive device, automated magnet feeding is achieved, reducing manual intervention. It ensures the continuous supply of magnets in the blanking channel 100 and supports the continuous operation of the production line. By rotating the use of multiple magnet storage channels 710, the continuous supply of magnets is ensured, avoiding production interruptions caused by material shortages, and improving the production stability.

[0064] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnet pressing device, characterized in that: include: A material dropping channel (100), wherein the material dropping channel (100) is used for stacking magnets; A material distribution platform (200) is located below the material distribution channel (100), and a material distribution chute (210) corresponding to the material distribution channel (100) is provided on the surface of the material distribution platform (200), and a through hole (220) corresponding to an external workpiece mounting hole is provided at one end of the material distribution chute (210); A material dividing paddle (300), the material dividing paddle (300) being located between the material dividing platform (200) and the material dropping channel (100), the material dividing paddle (300) being driven by a material dividing driving device (310) to move back and forth along the direction of the material dividing chute (210); A pressure rod (400), wherein the pressure rod (400) is slidably mounted above the through hole (220), the pressure rod (400) can enter the through hole (220), and the pressure rod (400) is driven by a pressing driving device to move up and down; The material dividing paddle (300) is used to drive the magnet in the material dividing chute (210) to enter the through hole (220), and the pressure rod (400) is used to press the magnet in the through hole (220) into the external workpiece mounting hole.

2. The magnet pressing device according to claim 1, characterized in that: The magnet pressing device is installed on a sliding platform (500), and the sliding platform (500) is driven to rise and fall by a sliding lifting device (510).

3. The magnet pressing device according to claim 1, characterized in that: The sum of the depth of the material distribution chute (210) and the thickness of the material distribution paddle (300) is less than the thickness of a single magnet.

4. The magnet pressing device according to claim 3, characterized in that: The gap between the discharge port at the bottom end of the material dropping channel (100) and the bottom end of the material distribution chute (210) is smaller than the thickness of two magnet stacks.

5. The magnet pressing device according to claim 1, characterized in that: A material shortage sensor (600) is provided on the side of the material dropping channel (100).

6. The magnet pressing device according to claim 1, characterized in that: A magnet placement jig (700) is provided above the blanking channel (100), and the magnet placement jig (700) is slidably installed above the blanking channel (100); The magnet placement jig (700) is provided with a magnet storage channel (710) corresponding to the blanking channel (100), and magnets are stacked in the magnet storage channel (710); The top of the material dropping channel (100) is provided with a feeding hole (110), and the bottom of the magnet storage channel (710) is provided with a feeding hole (730) for the magnet to pass through. When the feeding hole (730) of the magnet storage channel (710) and the feeding hole (110) of the material dropping channel (100) are connected, the magnet in the magnet storage channel (710) falls into the material dropping channel (100).

7. The magnet pressing device according to claim 6, characterized in that: The magnet placement jig (700) is provided with a plurality of magnet storage channels (710) corresponding to the blanking channels (100) along the sliding direction; A limit block is provided in front of the magnet placement jig (700), and a through slot (800) is provided on the limit block. The through slot (800) is used to connect the feeding hole (110) and the feeding hole (730); The magnet placement jig (700) is driven by a feeding drive device to align the magnet storage channels (710) with the through slots (800) in sequence.