A magnetic core greening machine and method

Abstract

This invention belongs to the technical field of magnetic core processing equipment, specifically relating to a magnetic core green blank arranging machine and arranging method. It includes a frame, a feeding conveyor belt for conveying magnetic cores and rotatably connected to the frame via pulleys, second conveyor belts and drive components respectively arranged on both sides of the feeding conveyor belt along its length, the second conveyor belts being intermittently rotatably connected to the frame via a grooved wheel mechanism, and the feeding conveyor belt and the second conveyor belts being at the same height; it also includes a sintering plate and a powder-spreading mechanism disposed above the sintering plate, the output end of the grooved wheel mechanism synchronously driving the powder-spreading mechanism to rotate. The beneficial effects of this invention are: the grooved wheel mechanism drives the spiral discharge of zirconium powder, improving the coverage of zirconium powder on the outer surface of the magnetic core and reducing adhesion.

Description

Technical Field

[0001] This invention relates to the field of magnetic core processing equipment technology, specifically to a magnetic core green blank arranging machine and arranging method. Background Technology

[0002] A magnetic core is a sintered magnetic metal oxide composed of various iron oxide mixtures. It is used in electronic devices to store and transmit electrical energy, and as a crucial component of inductors and transformers, it significantly impacts inductor performance. Before sintering, zirconium powder is typically spread onto the surface of the green core to reduce adhesion between adjacent cores during sintering. However, existing green core arranging machines often use linear powder application or roller-based powder coating methods, concentrating the zirconium powder on the upper surface of the core. This results in insufficient zirconium powder coverage on the sides, leading to adhesion between adjacent cores during sintering and affecting the yield. Summary of the Invention

[0003] The present invention addresses the problems mentioned above by designing a magnetic core green blank arranging machine and arranging method to achieve spiral feeding of zirconium powder, improve the coverage of zirconium powder on the outer surface of the magnetic core, and reduce the occurrence of adhesion.

[0004] To achieve the above objectives, the present invention provides a magnetic core greening machine, comprising a frame, a feeding conveyor belt for conveying magnetic cores and rotatably connected to the frame via pulleys, a second conveyor belt and a drive assembly respectively disposed on both sides of the feeding conveyor belt along its length, the second conveyor belt being intermittently rotatably connected to the frame via a grooved wheel mechanism, the feeding conveyor belt and the second conveyor belt being at the same height; further comprising a sintering plate and a powder-spreading mechanism disposed above the sintering plate, the output end of the grooved wheel mechanism synchronously driving the powder-spreading mechanism to rotate.

[0005] Furthermore, the grooved wheel mechanism includes a power source, an active dial equipped with a cylindrical pin, and a driven grooved wheel. The output shaft of the power source drives and connects to the active dial. The active dial cooperates with the driven grooved wheel for transmission. A rotating shaft is installed in the center hole of the driven grooved wheel. An active pulley is installed on the rotating shaft. The second conveyor belt is rotatably connected to the frame through the active pulley and the guide wheel.

[0006] Furthermore, the powder-spreading mechanism includes a base, a powder-spreading box, and a stirring assembly rotatably connected to the powder-spreading box. The frame is fixedly equipped with a gantry beam, the base is rotatably connected to the gantry beam via a rotating shaft, the powder-spreading box is snapped into the base, and the powder-spreading box has a connected feed port and discharge port.

[0007] Furthermore, a driving bevel gear is installed at the end of the rotating shaft away from the driving pulley, the driving bevel gear meshes with the driven bevel gear, and the rotating shaft is installed in the center hole of the driven bevel gear.

[0008] Furthermore, the drive assembly includes a horizontal drive cylinder and a pusher plate, wherein the piston rod of the horizontal drive cylinder is driven to connect to the pusher plate via a floating joint.

[0009] Furthermore, a material transfer mechanism is provided above the second conveyor belt, and a support frame is fixedly installed on the frame. The material transfer mechanism is movably connected to the support frame through an XYZ three-axis moving assembly.

[0010] Furthermore, the material transfer mechanism includes a negative pressure pump, a negative pressure pipeline, and a suction cup, wherein the suction cup is connected to the negative pressure pump through the negative pressure pipeline.

[0011] Furthermore, the frame is provided with double guide rails, and a movable frame is connected to the guide rails via a slider assembly. The sintered plate overlaps the movable frame. A second horizontal drive cylinder is also installed on the frame, and the piston rod of the second horizontal drive cylinder drives and connects to the movable frame.

[0012] Furthermore, the frame is equipped with a mesh screen located below the powder spreading mechanism, and a recovery bin is installed at the bottom of the frame, covering the mesh screen, and the recovery bin is connected to a pull-out hopper.

[0013] This invention also includes an arrangement method for a magnetic core greening machine, comprising the following steps: 1) Start the feeding conveyor belt, which drives several magnetic cores to move in a single row towards the drive assembly; 2) The drive assembly pushes the magnetic core group to the second conveyor belt, which is driven by the Geneva mechanism to achieve intermittent transmission and arrange several groups of magnetic cores in a spaced manner. 3) The material transfer mechanism adsorbs and transfers the arranged magnetic cores to the sintering plate at the other end of the frame; 4) The second horizontal drive cylinder pushes the sintering plate to move below the powder spreading mechanism; 5) While the Geneva mechanism drives the second conveyor belt intermittently, its output end is connected to the powder spreading mechanism, synchronously driving the powder spreading mechanism to rotate and controlling the spiral feeding of zirconium powder; 6) After the powdering is completed, the piston rod of the horizontal drive cylinder returns to its original position, moving the sintering plate out of the powdering mechanism. Workers use soft brushes to sweep the excess zirconium powder to the filter screen, which is then collected in the recycling bin.

[0014] In summary, the present invention has the following advantages and beneficial technical effects: 1. This invention incorporates a grooved wheel mechanism that drives the second conveyor belt to rotate intermittently, achieving a spaced arrangement of the magnetic cores, increasing the gap between the core groups, and thus reducing core adhesion during sintering. Simultaneously, the grooved wheel mechanism drives a powder-spreading mechanism to rotate via a bevel gear set. Zirconium powder is then spirally fed through gravity and centrifugal force, increasing contact with the side faces of the magnetic cores, improving the coverage of zirconium powder on the outer surface of the cores, and further reducing adhesion.

[0015] 2. The present invention is equipped with a material transfer mechanism, which uses an XYZ three-axis moving assembly to transfer the arranged magnetic cores to the sintering plate. The material transfer mechanism adopts the principle of negative pressure, and the negative pressure pump transmits negative pressure to the suction cup to stabilize the adsorption of the magnetic cores.

[0016] 3. The guide rail design above the frame of this invention is used to limit the movement path of the moving frame. The second horizontal drive cylinder is used to control and change the position of the moving frame, driving the sintering plate to move synchronously.

[0017] 4. The present invention is equipped with a strainer for dropping excess zirconium powder. The recycling bin can collect the excess zirconium powder that falls through the strainer, which is convenient for recycling and saves production costs. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a top view of some structures in this invention. Figure 1 ; Figure 3 This is a schematic diagram of the transmission of the Geneva mechanism in this invention; Figure 4 This is a top view of some structures in this invention. Figure 2 ; Figure 5 This is a diagram showing the usage state of the powder-spreading mechanism in this invention.

[0019] The reference numerals in the attached figures are: 1. Frame; 11. Guide rail; 12. Moving frame; 13. Horizontal drive cylinder II; 14. Strainer; 15. Recycling bin; 2. Feeding conveyor belt; 3. Second conveyor belt; 4. Drive assembly; 41. Horizontal drive cylinder one; 42. Pusher plate; 5. Geneva mechanism; 51. Power source; 52. Driving dial; 53. Driven Geneva wheel; 54. Shaft 1; 55. Driving bevel gear; 56. Driven bevel gear; 57. Shaft 2; 6. Sintered plate; 7. Powder spreading mechanism; 71. Base; 72. Powder spreading box; 73. Gantry beam; 8. Transfer mechanism; 81. Support frame; 82. Suction cup; 83. Z-axis assembly. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout; the described embodiments are some embodiments of this invention, but not all embodiments; the embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention; all other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below with reference to the accompanying drawings: The following is in conjunction with the appendix Figures 1-5 The present invention will be further described in detail below: Example 1 like Figures 1-2 As shown, this embodiment discloses a magnetic core green arrangement machine, including a frame 1 and a feeding conveyor belt 2 for conveying magnetic cores and rotatably connected to the frame 1. The feeding conveyor belt 2 preferably uses a motor-driven pulley transmission method; belt drive is existing technology and will not be described in detail here. A second conveyor belt 3 and a drive assembly 4 are respectively arranged on both sides of the feeding conveyor belt 2 along its length. The second conveyor belt 3 is intermittently rotatably connected to the frame 1 via a grooved wheel mechanism 5, used for arranging magnetic cores with gaps, increasing the gap between the magnetic cores, and preventing adhesion during subsequent sintering. The feeding conveyor belt 2 and the second conveyor belt 3 are located at the same height. The arrangement machine also includes a sintering plate 6 and a powder-spreading mechanism 7 disposed above the sintering plate 6. While the grooved wheel mechanism 5 drives the second conveyor belt 3 to rotate intermittently, its output end synchronously drives the powder-spreading mechanism 7 to rotate.

[0021] like Figures 2-3 As shown, the Geneva mechanism 5 includes a power source 51, an active dial 52 equipped with cylindrical pins, and a driven Geneva wheel 53. The power source 51 is preferably an electric motor. The four corners of the motor housing are fixed to the upper end face of the frame 1 by fastening screws. The output shaft drives and connects to the active dial 52. The active dial 52 and the driven Geneva wheel 53 cooperate for transmission. In this embodiment, the driven Geneva wheel 53 has four sets of radial grooves, and a rotating shaft 54 ​​is installed in the center hole of the driven Geneva wheel 53. One end of the rotating shaft 54 ​​is equipped with an active pulley. The second conveyor belt 3 is rotatably connected to the frame 1 through the middle active pulley and the guide wheels on both sides. Vertical support plates are respectively provided on both sides of the length direction of the second conveyor belt 3. The guide wheels are rotatably installed between the vertical support plates through bearing seats and rotating shafts. The rotating shaft 54 ​​passes through one side of the vertical support plate and is rotatably connected to the other side of the vertical support plate through the bearing seat.

[0022] like Figures 4-5 As shown, the powder-spreading mechanism 7 includes a base 71, a powder-spreading box 72, and a stirring assembly (not shown in the figure) rotatably connected to the powder-spreading box 72. A gantry beam 73 is welded and installed on the frame 1. The opening of the gantry beam 73 is parallel to the length direction of the feeding conveyor belt 2. The base 71 is rotatably connected to the gantry beam 73 through a bearing seat and a rotating shaft 57. The base 71 has a slot. The powder-spreading box 72 has a buckle welded on it. The powder-spreading box 72 is detachably connected to the base 71 through the buckle and slot structure. The powder-spreading box 72 has a funnel-shaped cross-section and has a connected feeding port and a discharging port.

[0023] like Figure 3 As shown, a driving bevel gear 55 is mounted on the end of the shaft 54 ​​away from the driving pulley. The driving bevel gear 55 meshes with and drives the driven bevel gear 56. A shaft 57 is mounted in the center hole of the driven bevel gear 56.

[0024] like Figure 4 As shown, the drive assembly 4 includes a horizontal drive cylinder 41 and a pusher plate 42. The piston rod of the horizontal drive cylinder 41 is driven to connect to the pusher plate 42 through a floating joint. In this embodiment, the pusher plate 42 and the feeding conveyor belt 2 are at the same height. A material transfer mechanism 8 is provided above the second conveyor belt 3. A support frame 81 is welded and installed on the frame 1. The support frame 81 is higher than the height of the gantry beam 73. The material transfer mechanism 8 is movably connected to the support frame 81 through an XYZ three-axis moving assembly. The material transfer mechanism 8 includes a negative pressure pump, a negative pressure pipeline, and a suction cup 82. The suction cup 82 is connected to the negative pressure pump through the negative pressure pipeline and is used to transfer the magnetic cores arranged on the second conveyor belt 3 to the sintering plate 6 through the suction cup 82, which facilitates the subsequent uniform application of zirconium powder. In this embodiment, the XYZ three-axis moving component is preferably a CNC machine tool three-axis linkage in the prior art. The X-axis moving component drives the chuck 82 to move along the X-axis, the Y-axis moving component is only finely adjusted and is used to drive the chuck 82 to move along the Y-axis, and the Z-axis moving component is preferably a vertical lifting cylinder and is used to drive the chuck 82 to move along the Z-axis. The three-axis transmission adopts the prior art, which will not be described in detail here.

[0025] like Figure 1 As shown, a double guide rail 11 is laid on the frame 1, and a movable frame 12 is movably connected to the guide rail 11 via a slider assembly. A second horizontal drive cylinder 13 for driving the displacement of the movable frame 12 is also installed on the frame 1. The piston rod of the second horizontal drive cylinder 13 is connected to the movable frame 12 via a floating joint. A strainer 14 is provided on the frame 1, located directly below the powder spreading mechanism 7. A recovery bin 15 is also installed at the bottom of the frame 1. The feed inlet of the recovery bin 15 covers the strainer 14, and a pull-out hopper is inserted into the recovery bin 15.

[0026] Example 2 The arrangement method of the magnetic core greening machine of the present invention is as follows: Step 1: Start the feeding conveyor belt 2, which drives several magnetic cores to move in a single row towards the drive assembly 4; Step 2: The horizontal drive cylinder 41 in the drive assembly 4 drives the pusher plate 42 to move forward and push the magnetic core group onto the second conveyor belt 3. The front end of the feeding conveyor belt 2 is set with a discharge gap to ensure that the feeding of the second set of magnetic cores is not affected during the process of the drive assembly 4 pushing the first set of magnetic cores. Power source 51 outputs power to drive active dial 52 to rotate, causing cylindrical pin to intermittently drive driven groove wheel 53 to rotate. At the same time, driven groove wheel 53 transmits power to active pulley through rotating shaft 54, driving active pulley to rotate, realizing intermittent transmission of second conveyor belt 3, and arranging several sets of magnetic cores with gaps. Step 3: The material transfer mechanism 8 adsorbs and transfers the magnetic core group arranged on the second conveyor belt 3 to the sintering plate 6 on the other side of the frame 1. When in use, first adjust the Z-axis height of the material transfer mechanism 8, the suction cup 82 contacts the magnetic core group on the second conveyor belt 3, the negative pressure pump starts, and the generated negative pressure air causes the suction cup 82 to pick up the magnetic core group. Then the Z-axis assembly 83 of the material transfer mechanism 8 resets, so that the suction cup 82 avoids the gantry beam 73 during the transfer of the magnetic core group X-axis position. The X-axis position and Z-axis height are changed successively. After the magnetic core group is placed on the sintering plate 6, the negative pressure pump is turned off, and the XYZ three-axis moving assembly drives the suction cup 82 to reset again. Step 4: Horizontal drive cylinder 2 13 pushes the moving frame 12 and sintering plate 6 along the guide rail 11 to move below the powder spreading mechanism 7; Step 5: While the Geneva mechanism 5 drives the second conveyor belt 3 to rotate intermittently, the first rotating shaft 54 ​​is connected to the active bevel gear 55, which drives the active bevel gear 55 to rotate, further transmitting the driven bevel gear 56 and the second rotating shaft 57, synchronously driving the base 71 to rotate, and controlling the spiral feeding of zirconium powder. Step Six: After the powder is applied, the piston rod of the horizontal drive cylinder 13 is reset, moving the sintered plate 6 and the magnetic core assembly after the zirconium powder is applied directly below the powder application mechanism 7. The worker uses a soft brush to sweep the excess zirconium powder to the strainer 14, which eventually falls into the recycling bin 15.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetic core green arrangement machine, comprising a frame, a feeding conveyor belt for conveying magnetic cores and rotatably connected to the frame via pulleys, characterized in that: The feeding conveyor belt has a second conveyor belt and a drive assembly on both sides along its length. The second conveyor belt is intermittently connected to the frame via a grooved wheel mechanism. The feeding conveyor belt and the second conveyor belt are at the same height. The system also includes a sintering plate and a powder-spreading mechanism disposed above the sintering plate. The output end of the grooved wheel mechanism synchronously drives the powder-spreading mechanism to rotate. The Geneva mechanism includes a power source, an active dial equipped with a cylindrical pin, and a driven Geneva wheel. The output shaft of the power source drives and connects to the active dial. The active dial and the driven Geneva wheel cooperate for transmission. A rotating shaft is installed in the center hole of the driven Geneva wheel. An active pulley is installed on the rotating shaft. The second conveyor belt is rotatably connected to the frame through the active pulley and the guide wheel. The powder-spreading mechanism includes a base, a powder-spreading box, and a stirring assembly rotatably connected to the powder-spreading box. The frame is fixedly equipped with a gantry beam. The base is rotatably connected to the gantry beam via a rotating shaft. The powder-spreading box is snapped into the base, and the powder-spreading box has a connected feed port and a discharge port. The first rotating shaft is equipped with a driving bevel gear at the end away from the driving pulley. The driving bevel gear meshes with and drives the driven bevel gear. The second rotating shaft is assembled in the center hole of the driven bevel gear. The drive assembly includes a horizontal drive cylinder and a pusher plate, wherein the piston rod of the horizontal drive cylinder is driven to connect to the pusher plate through a floating joint; A material transfer mechanism is provided above the second conveyor belt. A support frame is fixedly installed on the frame. The material transfer mechanism is movably connected to the support frame through an XYZ three-axis moving assembly.

2. The magnetic core greening machine according to claim 1, characterized in that: The material transfer mechanism includes a negative pressure pump, a negative pressure pipeline, and a suction cup, with the suction cup connected to the negative pressure pump via the negative pressure pipeline.

3. A magnetic core greening machine according to claim 1, characterized in that: The frame is equipped with double guide rails, and a movable frame is connected to the guide rails via a slider assembly. The sintered plate overlaps the movable frame. A second horizontal drive cylinder is also installed on the frame, and the piston rod of the second horizontal drive cylinder drives and connects to the movable frame.

4. A magnetic core greening machine according to claim 3, characterized in that: The frame is equipped with a mesh screen located below the powder spreading mechanism. A recycling bin is installed at the bottom of the frame, covering the mesh screen, and a pull-out hopper is inserted into the recycling bin.

5. A method for arranging magnetic core green blanks in a magnetic core green blank arranging machine, characterized in that: The processing steps of the magnetic core greening machine according to claim 4 are as follows: Step 1: Start the feeding conveyor belt, which will drive several magnetic cores in a single row to move towards the drive assembly; Step 2: The drive assembly pushes the magnetic core group to the second conveyor belt. The second conveyor belt is driven by the Geneva mechanism to achieve intermittent transmission, arranging several groups of magnetic cores with gaps. Step 3: The material transfer mechanism adsorbs and transfers the arranged magnetic cores to the sintering plate at the other end of the frame; Step 4: The second horizontal drive cylinder pushes the sintering plate to move below the powder spreading mechanism; Step 5: While the Geneva mechanism drives the second conveyor belt intermittently, its output end is connected to the powder spreading mechanism, synchronously driving the powder spreading mechanism to rotate and controlling the spiral feeding of zirconium powder. Step Six: After the powdering is completed, the piston rod of the horizontal drive cylinder returns to its original position, moving the sintered plate out of the powdering mechanism. Workers use soft brushes to sweep the excess zirconium powder to the filter screen, which is then collected in the recycling bin.

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