A device and method for preventing magnetic core from sintering and sticking

Abstract

The present invention discloses a device and method for preventing magnetic cores from sintering and sticking. A device for preventing magnetic cores from sintering and sticking comprises a vibration plate, a heat preservation cover located above the vibration plate, a material guide trough located on one side of the vibration plate, a heater and a material receiving cylinder located below the heat preservation cover; the vibration plate comprises a frame, a material tray fixedly mounted on the upper end of the frame, a vibrator fixedly mounted on the lower end surface of the material tray, and a material discharge trough fixedly mounted on the outer side wall of the frame and connected to the material tray; a buffer is provided in the middle of the material tray. The method for preventing magnetic cores from sintering and sticking of the present invention comprises: 1) pouring aluminum powder into the vibration plate; 2) conveying the magnetic core to the middle of the material tray to contact with the aluminum powder; 3) the magnetic core is discharged by the vibration plate; 4) entering the sintering furnace for sintering. The device and method for preventing magnetic cores from sintering and sticking of the present invention have the advantages of simple equipment structure, convenient operation, low cost, high efficiency, and high product qualification rate.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component preparation, and in particular to a device and method for preventing magnetic core sintering and adhesion. Background Art

[0002] High-performance nickel-zinc soft ferrite core components have the characteristics of low loss, high saturation flux density, and high efficiency at high frequencies. Various inductors, transformers, chokes, filters, inverters, etc. made with them as the core are widely used in smart home appliances, communications, electric light sources, automotive electronics, photovoltaic new energy and other fields.

[0003] At present, the production process of nickel-zinc ferrite cores generally includes powder making, molding, sintering, grinding, sorting and packaging. In order to reduce production costs, the cores are generally sintered in stacking or stacking to improve sintering efficiency. However, during the high-temperature sintering process, impurities are not easy to volatilize, and the tightly discharged cores are prone to adhesion, bending and deformation, resulting in a decrease in product qualification rate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a device and method for preventing the magnetic core from sintering and sticking, which can prevent the magnetic core from sticking during the sintering process and improve the product qualification rate. The technical solution adopted by the present invention is:

[0005] A device for preventing a magnetic core from sintering and sticking, comprising a vibration plate, a heat preservation cover located above the vibration plate, a material guide trough located on one side of the vibration plate, a heater and a material receiving cylinder located below the heat preservation cover; the vibration plate comprises a frame, a material tray fixedly mounted on the upper end of the frame, a vibrator fixedly mounted on the lower end surface of the material tray, and a discharge trough fixedly mounted on the outer side wall of the frame and connected to the material tray; a discharge track is provided inside the material tray which gradually spirals upward from the bottom, and a buffer is provided in the middle of the material tray.

[0006] Furthermore, the heat-insulating cover is arc-shaped, and one side of the heat-insulating cover is connected to the upper end of the vibration plate through a connecting rod. The heat-insulating cover includes a heat-insulating inner layer, a heat-insulating outer layer, and a filling layer located between the heat-insulating inner layer and the heat-insulating outer layer. The surface of the heat-insulating inner layer is coated with a reflective material coating, and the filling layer is vacuum or heat-insulating cotton.

[0007] Furthermore, the buffer member includes a fixing rod fixed to the bottom of the material tray and a buffer sleeve sleeved on the fixing rod, and the buffer sleeve is provided with an upwardly extending flange on one side close to the material guide trough. The buffer sleeve can prevent the magnetic core from colliding with the vibration plate when falling from the material guide trough, and prevent the magnetic core from being scratched, deformed, or otherwise damaged during transportation.

[0008] Furthermore, the heater is a heating bulb, which is fixedly mounted on the heat preservation cover or fixedly mounted on the upper end of the vibration plate. The heating bulb can heat the magnetic core in the drying tray and illuminate the situation of the workpiece in the tray, making it convenient for staff to check.

[0009] Furthermore, the receiving barrel includes an upper receiving barrel and a lower receiving barrel, and a grid is provided at the bottom of the upper receiving barrel. A connecting piece is provided at the connection position of the upper receiving barrel and the lower receiving barrel, and the upper receiving barrel and the lower receiving barrel are detachably connected together through the connecting piece. The connecting piece is a baffle symmetrically distributed along the circumference of the receiving barrel. The magnetic core with aluminum powder attached is collected from the discharge slot of the vibration plate into the upper receiving barrel, and the excess scattered aluminum powder can fall into the lower receiving barrel through the grid, which is convenient for the recycling of aluminum powder and saves costs.

[0010] A method for preventing magnetic core sintering and adhesion, comprising the following steps:

[0011] S1. Pour an appropriate amount of aluminum powder into the middle of the vibrating plate and turn on the heating device on the insulation cover;

[0012] S2, conveying the formed magnetic core to the middle of the material tray through the material guide trough, so that the magnetic core contacts the aluminum powder;

[0013] S3. The magnetic core with aluminum powder on the surface is initially dried in the vibration plate to remove some moisture, and then gradually transported from the lower part of the plate to the discharge trough on the upper part of the plate through the discharge track of the vibration plate;

[0014] S4. The magnetic cores are collected in the barrel through the discharge chute and then enter the sintering furnace for sintering.

[0015] Compared with the prior art, the present invention has the following significant beneficial effects:

[0016] The device and method for preventing the magnetic core from sintering and sticking of the present invention have simple structure, convenient operation, low cost and high efficiency. Aluminum powder is added to the vibration plate, the magnetic core and the aluminum powder are mixed at the bottom of the plate, and the plate is slightly heated to remove excess moisture from the magnetic core. The magnetic core with aluminum powder is gradually vibrated upward and discharged, which can avoid excessive aluminum powder being attached to the magnetic core and causing aluminum powder waste. At the same time, compared with traditional zirconium powder, aluminum powder has low cost and is easy to clean and recycle, and will not affect the performance of the magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the device for preventing the sintering and adhesion of the magnetic core of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the material tray in the device for preventing the sintering and adhesion of the magnetic core of the present invention;

[0019] Markings in the figure: 1-vibrating plate; 2-insulating cover; 3-material guide trough; 4-heating lamp; 5-material collecting barrel; 6-frame; 7-material tray; 8-vibrator; 9-discharging trough; 10-discharging track; 11-fixing rod; 12-buffer sleeve; 13-flange; 14-connecting rod; 15-insulating inner layer; 16-insulating outer layer; 17-filling layer; 19-upper material collecting barrel; 20-lower material collecting barrel; 21-grid; 22-connecting piece; 23-aluminum powder. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a device for preventing the sintering and adhesion of a magnetic core comprises a vibration plate 1, a heat preservation cover 2 located above the vibration plate 1, a material guide trough 3 located on one side of the vibration plate 1, a heating lamp 4 and a material receiving barrel 5 located below the heat preservation cover 2; the vibration plate 1 comprises a frame 6, a material tray 7 fixedly mounted on the upper end of the frame 6, a vibrator 8 fixedly mounted on the lower end surface of the material tray 7, and a material discharge trough 9 fixedly mounted on the outer side wall of the frame 6 and connected to the material tray 7; the interior of the material tray 7 is provided with a material discharge track 10 that gradually spirals upward from the bottom, and a buffer is provided in the middle of the material tray 7. The buffer comprises a fixed rod 11 fixed to the material tray 7 and a buffer sleeve 12 sleeved on the fixed rod 11, and the buffer sleeve 12 is provided with an upwardly extending flange 13 on the side close to the material guide trough 3.

[0022] The heat-insulating cover 2 is arc-shaped, and one side of the heat-insulating cover 2 is connected to the upper end of the vibration plate 1 through a connecting rod 14. The heat-insulating cover 2 includes a heat-insulating inner layer 15, a heat-insulating outer layer 16, and a filling layer 17 located between the heat-insulating inner layer 15 and the heat-insulating outer layer 16. The surface of the heat-insulating inner layer 15 is coated with a reflective material coating, and the filling layer 17 is vacuum.

[0023] The receiving barrel 5 includes an upper receiving barrel 19 and a lower receiving barrel 20, and a grid 21 is provided at the bottom of the upper receiving barrel 19. A connecting piece 22 is provided at the connection position of the upper receiving barrel 19 and the lower receiving barrel 20, and the upper receiving barrel 19 and the lower receiving barrel 20 are detachably connected together through the connecting piece 22. The connecting piece 22 is a baffle symmetrically distributed along the circumference of the receiving barrel 5. The magnetic core with aluminum powder is collected from the discharge slot 9 of the vibration plate 1 into the upper receiving barrel 19, and the excess scattered aluminum powder can fall into the lower receiving barrel 20 through the grid 21, which is convenient for the recycling of aluminum powder and saves costs.

[0024] A method for preventing magnetic core sintering and adhesion, comprising the following steps:

[0025] S1. Pour an appropriate amount of aluminum powder 23 into the middle of the material tray 7 of the vibration plate 1, and turn on the heater on the heat preservation cover 2;

[0026] S2, conveying the formed magnetic core to the middle of the material tray 7 through the material guide trough 3, so that the magnetic core is in contact with the aluminum powder 23;

[0027] S3, the magnetic core with aluminum powder on the surface is preliminarily dried in the vibration plate 1 to remove some moisture, and then gradually transported from the lower part of the material plate 7 to the discharge trough 9 on the upper part of the material plate 7 through the discharge track 10 of the vibration plate 1;

[0028] S4, the magnetic core is collected in the collecting tube 5 through the discharging chute 9, and then enters the sintering furnace for sintering.

[0029] The present invention has been described in detail above in conjunction with specific embodiments. However, the present invention is not limited to the above description. Various changes made within the knowledge of those skilled in the art without departing from the concept of the present invention still fall within the protection scope of the present invention.

Claims

1. A device for preventing magnetic core from sintering and sticking, characterized in that: It includes a vibrating plate, a heat preservation cover located above the vibrating plate, a material guide trough located on one side of the vibrating plate, a heater and a material receiving cylinder located below the heat preservation cover; the vibrating plate includes a frame, a material tray fixedly mounted on the upper end of the frame, a vibrator fixedly mounted on the lower end surface of the material tray, and a discharging trough fixedly mounted on the outer side wall of the frame and connected to the material tray; a discharging track is provided inside the material tray, which gradually spirals upward from the bottom, and a buffer is provided in the middle of the material tray; the heat preservation cover is arc-shaped, and one side of the heat preservation cover is connected to the upper end of the vibrating plate by a connecting rod; the heat preservation cover includes a heat preservation inner layer, a heat preservation outer layer and a heat preservation outer layer located above the heat preservation inner layer. A filling layer between the inner layer and the insulating outer layer; the buffer comprises a fixed rod fixed to the bottom of the material tray and a buffer sleeve mounted on the fixed rod, and the buffer sleeve is provided with an upwardly extending flange on the side close to the material guide groove; the heater is a heating bulb, and the heating bulb is fixedly mounted on the insulation cover or fixedly mounted on the upper end of the vibration plate; the material receiving barrel comprises an upper material receiving barrel and a lower material receiving barrel, and a grid is provided at the bottom of the upper material receiving barrel; a connecting piece is provided at the connecting position of the upper material receiving barrel and the lower material receiving barrel, and the upper material receiving barrel and the lower material receiving barrel are detachably connected together by the connecting piece; the connecting piece is a baffle symmetrically distributed along the circumference of the material receiving barrel.

2. A method for preventing magnetic core sintering and adhesion, using the device as claimed in claim 1, characterized in that The following steps are involved: S1. Pour an appropriate amount of aluminum powder into the middle of the vibrating plate and turn on the heating device on the insulation cover; S2, conveying the formed magnetic core to the middle of the material tray through the material guide trough, so that the magnetic core contacts the aluminum powder; S3. The magnetic core with aluminum powder on the surface is initially dried in the vibration plate to remove some moisture, and then gradually transported from the lower part of the plate to the discharge trough on the upper part of the plate through the discharge track of the vibration plate; S4. The magnetic core is collected by the collecting tube through the discharging chute and then enters the sintering furnace for sintering.

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