A gap-cutting apparatus for the production of soft magnetic ferrite cores

Abstract

This invention relates to the field of magnetic core processing, and more particularly to a slit-cutting processing device for the production of soft magnetic ferrite cores. Existing devices easily damage fragile magnetic cores during cutting and loading, are inconvenient for continuous cutting, and after cutting, parts of different magnetic cores are easily mixed, resulting in core mismatch. The slit-cutting processing device for the production of soft magnetic ferrite cores includes a support plate, etc.; a guide rail is fixedly connected to the support plate, an electric slider is slidably connected to the guide rail, a drive motor is fixedly connected to the upper part of the electric slider, and a cutting blade is mounted on the output shaft of the drive motor. By using a buffer wheel to cushion the magnetic cores, fragile magnetic cores are less likely to be damaged before cutting. Furthermore, by using push blocks to sequentially push one magnetic core into the placement slot for cutting, continuous cutting of multiple magnetic cores is achieved, improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of magnetic core processing, and more particularly to a slit cutting apparatus for the production of soft magnetic ferrite cores. Background Technology

[0002] Most switching power supply transformers require an air gap in their cores to prevent magnetic saturation and store more energy. This air gap can be created by pre-inserting it during manufacturing (e.g., with metal powder cores) or through post-processing (grinding, padding with non-magnetic materials, etc.). For example, ferrite cores, due to their high permeability, are prone to saturation, and the effective permeability is often reduced by cutting a gap. Some existing toroidal cores are typically completely cut, dividing them into two symmetrical parts.

[0003] However, existing devices are prone to damaging fragile magnetic cores during cutting and feeding, and are not convenient for continuous cutting. After cutting, two parts of different magnetic cores are easily mixed, resulting in magnetic core mismatch. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a slit processing device for the production of soft magnetic ferrite cores that facilitates continuous cutting, does not easily damage the magnetic core, and facilitates the collection of the magnetic core after cutting.

[0005] Technical solution: A slit cutting device for producing soft magnetic ferrite cores includes a support plate, a guide rail fixedly connected to the support plate, an electric slider slidably connected to the guide rail, a drive motor fixedly connected to the upper part of the electric slider, a cutting blade mounted on the output shaft of the drive motor, a positioning mechanism on the support plate for placing and positioning the magnetic core, a feeding mechanism on the positioning mechanism for pushing the magnetic core to a designated position, and a retraction mechanism on the support plate for ejecting the cut magnetic core.

[0006] Furthermore, it is particularly preferred that the positioning mechanism includes a placement platform, which is fixedly connected to the support plate. The placement platform has a vertical groove and a placement slot. Two feeding ramps are fixedly connected to one side of the placement platform. Two uprights are fixedly connected to the support plate. A connecting slide is slidably connected between the two uprights. A compression spring is connected between the connecting slide and the upright. Two extrusion rods are fixedly connected to the connecting slide. The upper part of the extrusion rod has a protrusion, and the lower part of the extrusion rod has a friction pad. An inclined crossbar is fixedly connected to the housing of the drive motor.

[0007] Furthermore, it is particularly preferred that the feeding mechanism includes a fixed block, which is fixedly connected to the placement platform. A support arm is fixedly connected to the upper part of the fixed block, and a hopper is fixedly connected to the support arm. An electric push rod is fixedly connected to the fixed block, and a push block is fixedly connected to the telescopic rod of the electric push rod. Two stop bars are fixedly connected to the push block, and the upper surface of the stop bars contacts the lower surface of the hopper. Side frames are fixedly connected to both sides of the hopper, and two moving blocks are slidably connected to each of the two side frames. A buffer spring is connected between the moving blocks and the side frames. The two moving blocks form a group, and a buffer wheel is rotatably connected between the two moving blocks in each group. A torsion spring is connected between the buffer wheel and the moving block.

[0008] Furthermore, it is particularly preferred that the unloading mechanism includes two support crossbars, both of which are fixedly connected to the support plate. A push frame is slidably connected between the two support crossbars. A return spring is connected between the push frame and the support crossbars. A vertical plate is fixedly connected to the push frame. A connecting block is fixedly connected to one side of the inclined crossbar. A swing block is connected to the lower part of the connecting block via a hinge. A spring plate is fixedly connected to the lower part of the swing block.

[0009] Furthermore, preferably, it also includes a material collection mechanism, which is mounted on the support plate and connected to the electric slider. The material collection mechanism is used to collect the cut magnetic cores. The material collection mechanism includes a limit rod, which is fixedly connected to the support plate. A sliding plate is slidably connected to the limit rod, and a support spring connects the sliding plate to the limit rod. A separation partition is fixedly connected to the sliding plate, located within the vertical groove of the placement platform, and positioned between the two inclined surfaces for feeding. A top rod is fixedly connected to the sliding plate. A guide frame is fixedly connected to one side of the crossbar. The side of the guide frame is parallelogram-shaped. A positioning frame is fixedly connected between the two feeding inclined surfaces. A partition is fixedly connected to the middle of the positioning frame. Two side rods are fixedly connected to one side of the support plate. A movable plate is slidably connected between the two side rods. A tension spring is connected between the movable plate and the support plate. A straight groove is opened in the middle of the movable plate. A stop rod is fixedly connected to one side of the movable plate. Two positioning rods are fixedly connected to one side of the support plate. A collection cylinder is placed between the two positioning rods. A right-angle rod is fixedly connected to one side of the electric slider. The right-angle rod is in contact with the stop rod.

[0010] 1. The buffer wheel cushions the magnetic core, making it less likely to be damaged before cutting. The pusher blocks push the magnetic core into the placement slot one by one for cutting, realizing continuous cutting of multiple magnetic cores and improving the efficiency of magnetic core cutting.

[0011] 2. The separating partition moves upward and inserts between the two cut magnetic core parts, separating them. The magnetic core is then pushed out by the pusher. The two magnetic core parts remain isolated during this process. They then fall onto the moving plate via the feeding ramp and continue to be separated by the partition. When the electric slider drives the right-angle rod to reset, the right-angle rod will press again and drive the stop rod and the moving plate to move horizontally away from the support plate. Because the positioning frame blocks the magnetic core, the magnetic core will not move horizontally with the moving plate. After the moving plate is removed, the magnetic core falls downward into the collection cylinder. This ensures that each magnetic core, after being cut into two parts, falls into the collection cylinder in a matching manner, making it less likely for the two parts of different magnetic cores to mix during continuous operation, thus preventing potential mismatch of magnetic cores. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a three-dimensional structural diagram of the positioning mechanism of the present invention.

[0014] Figure 3 This is a three-dimensional structural diagram of the feeding mechanism of the present invention.

[0015] Figure 4 This is a three-dimensional structural diagram of the material ejection mechanism of the present invention.

[0016] Figure 5 This is a schematic diagram of the separate three-dimensional structure of the connecting block and the swing block of the present invention.

[0017] Figure 6 This is a partial three-dimensional structural diagram of the material collection mechanism of the present invention.

[0018] Figure 7 This is a three-dimensional structural diagram of the material collection mechanism of the present invention.

[0019] Figure 8 This is a three-dimensional structural diagram of the positioning rod and the collecting cylinder of the present invention.

[0020] Figure 9 This is a cross-sectional three-dimensional structural diagram of the material collecting cylinder of the present invention.

[0021] In the diagram: 1. Support plate, 2. Guide rail, 3. Electric slider, 41. Drive motor, 42. Cutting blade, 51. Placement platform, 52. Placement slot, 53. Feeding ramp, 54. Upright pole, 55. Connecting carriage, 56. Compression spring, 57. Extrusion rod, 58. Horizontal bar of ramp, 61. Fixed block, 62. Support arm, 63. Hopper, 64. Electric push rod, 65. Push block, 66. Stop bar, 67. Side frame, 68. Moving block, 69. Buffer spring, 610. Buffer wheel, 61... 1. Torsion spring; 71. Support crossbar; 72. Push frame; 73. Return spring; 74. Vertical plate; 75. Connecting block; 76. Swing block; 77. Spring plate; 81. Limiting rod; 82. Sliding plate; 83. Support spring; 84. Separating partition; 85. Top rod; 86. Guide frame; 87. Positioning frame; 88. Partition plate; 89. Side rod; 891. Tension spring; 810. Moving plate; 811. Stop bar; 812. Positioning rod; 813. Collector cylinder; 814. Right angle rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] A gap-cutting apparatus for producing soft magnetic ferrite cores, such as Figure 1-9 As shown, the device includes a support plate 1, a guide rail 2 fixedly connected to the support plate 1, an electric slider 3 slidably connected to the guide rail 2, a drive motor 41 fixedly connected to the upper part of the electric slider 3, a cutting blade 42 mounted on the output shaft of the drive motor 41, a positioning mechanism on the support plate 1 for placing and positioning the magnetic core, a feeding mechanism on the positioning mechanism for pushing the magnetic core to a designated position, and a retraction mechanism on the support plate 1 for ejecting the cut magnetic core.

[0025] The positioning mechanism includes a placement platform 51, which is fixedly connected to the support plate 1. The placement platform 51 has a vertical groove and a placement slot 52. Two feeding inclined surfaces 53 are fixedly connected to one side of the placement platform 51. Two uprights 54 are fixedly connected to the support plate 1. A connecting slide 55 is slidably connected between the two uprights 54. A compression spring 56 is connected between the connecting slide 55 and the uprights 54. Two pressing rods 57 are fixedly connected to the connecting slide 55. The pressing rods 57 have a protrusion on the upper part and a friction pad on the lower part. An inclined crossbar 58 is fixedly connected to the housing of the drive motor 41.

[0026] The feeding mechanism includes a fixed block 61, which is fixedly connected to the placement platform 51. A support arm 62 is fixedly connected to the upper part of the fixed block 61, and a hopper 63 is fixedly connected to the support arm 62. An electric push rod 64 is fixedly connected to the fixed block 61, and a push block 65 is fixedly connected to the telescopic rod of the electric push rod 64. Two baffles 66 are fixedly connected to the push block 65, and the upper surface of the baffles 66 contacts the lower surface of the hopper 63. Side frames 67 are fixedly connected to both sides of the hopper 63, and two moving blocks 68 are slidably connected to each of the two side frames 67. A buffer spring 69 is connected between the moving blocks 68 and the side frames 67. The two moving blocks 68 form a group, and a buffer wheel 610 is rotatably connected between the two moving blocks 68 in each group. A torsion spring 611 is connected between the buffer wheel 610 and the moving block 68.

[0027] The unloading mechanism includes two support crossbars 71, both of which are fixedly connected to the support plate 1. A pusher frame 72 is slidably connected between the two support crossbars 71. A return spring 73 is connected between the pusher frame 72 and the support crossbars 71. A vertical plate 74 is fixedly connected to the pusher frame 72. A connecting block 75 is fixedly connected to one side of the inclined crossbar 58. A swing block 76 is connected to the lower part of the connecting block 75 via a hinge. A spring plate 77 is fixedly connected to the lower part of the swing block 76.

[0028] In practice, the operator needs to cut the annular magnetic core along the center of symmetry, dividing it into two symmetrical parts. First, the operator puts several magnetic cores into the hopper 63 from top to bottom. When the magnetic cores are put into the hopper 63, they fall downwards. Since the distance between the two buffer wheels 610 is less than the diameter of the magnetic core, the magnetic core will contact and squeeze the buffer wheels 610 on both sides during its downward fall. Through the buffer spring 69 and the torsion spring 611, the speed at which the magnetic core falls downwards is reduced, thus achieving buffering. Since the soft magnetic ferrite core has a fragile characteristic, buffering it can prevent the magnetic core from being damaged before cutting. After buffering, the magnetic core finally falls onto the placement table 51, and then several other magnetic cores are cut from bottom to top. The magnetic cores are stacked in hopper 63. The upper surface of one magnetic core that falls onto the placement table 51 is lower than the lower surface of hopper 63. The operator then activates the electric push rod 64. The extension rod of the electric push rod 64 causes the push block 65 to extend, pushing the magnetic core that fell onto the placement table 51 horizontally. Simultaneously, the stop bar 66 blocks other magnetic cores in hopper 63, preventing them from falling downwards. The push block 65 continues to push the magnetic cores, eventually pushing them into the placement slot 52. Then, the electric push rod 64 resets. After the electric push rod 64 resets, the stop bar 66 no longer blocks the magnetic cores in hopper 63, and the magnetic cores in hopper 63 fall downwards due to gravity. This process is repeated to achieve continuous feeding. The operator then starts the drive motor 41 and the electric... The slider 3, driven by the motor 41, rotates the cutting blade 42 at high speed. The horizontal movement of the electric slider 3 causes the cutting blade 42 to move horizontally closer to the magnetic core. As the electric slider 3 moves horizontally, the motor 41 also drives the inclined horizontal bar 58 to move horizontally as well. After moving a certain distance, the inclined horizontal bar 58 presses against a protrusion on one of the pressing rods 57, causing the other pressing rod 57 to move downwards via the connecting carriage 55. The compression spring 56 compresses, and after the pressing rod 57 moves downwards, it presses against the upper surface of the magnetic core in the placement slot 52. The friction pad at the bottom of the pressing rod 57 further stabilizes the magnetic core. Then, the electric slider 3 continues to drive the cutting blade 42 horizontally, cutting... Cutter 42 then begins cutting the magnetic core. As the cutting blade 42 moves horizontally towards the magnetic core with the electric slider 3, the inclined crossbar 58, moving horizontally with the electric slider 3, will cause the swing block 76 and connecting block 75 to move horizontally together. Then, the spring plate 77 will touch the vertical plate 74, causing the swing block 76 to swing. After the swing block 76 and spring plate 77 pass the vertical plate 74, they swing back to their original positions. After the magnetic core is cut, the electric slider 3 drives the cutting blade 42 to reset. When the swing block 76 and spring plate 77 move horizontally back to their original positions, the spring plate 77 will touch the vertical plate 74. At this point, the swing block 76 will not swing. If the swing block 76 continues to move horizontally, the spring plate 77 will first press against the vertical plate 74.The pusher 72 moves horizontally along with the vertical plate 74, compressing the return spring 73. The horizontal movement of the pusher 72 pushes out the magnetic core, which is cut into two symmetrical parts in the placement slot 52, and it slides down the unloading slope 53. Once the magnetic core is pushed out, the pusher 72 stops moving horizontally, causing the spring plate 77 to deform and disengage from the vertical plate 74. Then, the return spring 73 drives the pusher 72 to reset.

[0029] Example 2

[0030] Based on Example 1, such as Figure 6-9 As shown, it also includes a material collection mechanism, which is mounted on the support plate 1 and connected to the electric slider 3. The material collection mechanism is used to collect the cut magnetic cores. The material collection mechanism includes a limit rod 81, which is fixedly connected to the support plate 1. A sliding plate 82 is slidably connected to the limit rod 81. A support spring 83 is connected between the sliding plate 82 and the limit rod 81. A separation partition 84 is fixedly connected to the sliding plate 82. The separation partition 84 is located in the vertical groove of the placement platform 51 and between the two feeding inclined surfaces 53. A top rod 85 is fixedly connected to the sliding plate 82. A guide frame 8 is fixedly connected to one side of the inclined surface crossbar 58. 6. The guide frame 86 has a parallelogram-shaped side. A positioning frame 87 is fixedly connected between the two feeding inclined surfaces 53. A partition plate 88 is fixedly connected in the middle of the positioning frame 87. Two side rods 89 are fixedly connected to one side of the support plate 1. A moving plate 810 is slidably connected between the two side rods 89. A tension spring 891 is connected between the moving plate 810 and the support plate 1. A straight groove is opened in the middle of the moving plate 810. A stop rod 811 is fixedly connected to one side of the moving plate 810. Two positioning rods 812 are fixedly connected to one side of the support plate 1. A collection cylinder 813 is placed between the two positioning rods 812. A right-angle rod 814 is fixedly connected to one side of the electric slider 3. The right-angle rod 814 contacts the stop rod 811.

[0031] Initially, the tension spring 891 is in a stretched state. When the inclined horizontal bar 58 moves horizontally along with the cutting blade 42 to cut the magnetic core, the electric slider 3 will drive the right-angle bar 814 to move together, so that the right-angle bar 814 no longer presses against the stop bar 811. The tension spring 891 returns to its original state, causing the moving plate 810 to move horizontally and press against the side of the support plate 1. The partition plate 88 is inserted into the straight groove of the moving plate 810. The inclined horizontal bar 58 will drive the guide frame 86 to move horizontally together. The guide frame 86 moves horizontally a short distance towards the top rod 85. After the guide frame 86 is positioned at a distance, because the side of the guide frame 86 is parallelogram-shaped, the top rod 85 will be pressed downwards by one side of the guide frame 86, moving it a certain distance. This will also cause the sliding plate 82 and the separation partition 84 to move downwards together, stretching the support spring 83. After the magnetic core is cut, the guide frame 86 will disengage from the top rod 85. The support spring 83 will then cause the sliding plate 82 and the separation partition 84 to move upwards and reset. Then, when the guide frame 86 moves horizontally and resets along with the cutting blade 42, the other side of the guide frame 86 will press against the top rod 85. Moving upwards a certain distance, the push rod 85 moves upwards, causing the sliding plate 82 and the separating partition 84 to move upwards. The support spring 83 is compressed, and the separating partition 84 moves upwards and inserts between the two cut magnetic core parts, separating them. Then, the magnetic core is pushed out by the push frame 72. The two magnetic core parts remain isolated during the push-out process. After passing through the unloading ramp 53, they fall onto the moving plate 810 and continue to be separated by the partition 88. Then, the electric slider 3 drives the right-angle rod 814 to reset. The right-angle rod 814 will squeeze again and drive the stop rod 811 and the moving plate 810 to move horizontally away from the support plate 1. Since the positioning frame 87 blocks the magnetic core, the magnetic core will not move horizontally with the moving plate 810. After the moving plate 810 is removed, the magnetic core falls down into the collection cylinder 813. This allows each magnetic core to be cut into two parts and fall into the collection cylinder 813 in a matching manner, so that during continuous operation, it is not easy to mix the two parts of different magnetic cores, which may cause the magnetic cores to be mismatched.

[0032] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for illustrative purposes only and is not intended to limit the invention; rather, the scope of protection is defined by the content of the claims.

Claims

1. A gap-cutting apparatus for producing soft magnetic ferrite cores, characterized in that: The device includes a support plate (1), a guide rail (2) fixedly connected to the support plate (1), an electric slider (3) slidably connected to the guide rail (2), a drive motor (41) fixedly connected to the upper part of the electric slider (3), a cutting blade (42) provided on the output shaft of the drive motor (41), a positioning mechanism provided on the support plate (1), the positioning mechanism being used to place and position the magnetic core, a feeding mechanism provided on the positioning mechanism, the feeding mechanism being used to push the magnetic core to a designated position, and a ejection mechanism provided on the support plate (1), the ejection mechanism being used to eject the cut magnetic core. The positioning mechanism includes a placement platform (51), which is fixedly connected to the support plate (1). The placement platform (51) has a vertical groove and a placement slot (52). Two feeding inclined surfaces (53) are fixedly connected to one side of the placement platform (51). Two uprights (54) are fixedly connected to the support plate (1). A connecting slide (55) is slidably connected between the two uprights (54). A compression spring (56) is connected between the connecting slide (55) and the uprights (54). Two extrusion rods (57) are fixedly connected to the connecting slide (55). The upper part of the extrusion rod (57) has a protrusion, and the lower part of the extrusion rod (57) has a friction pad. An inclined crossbar (58) is fixedly connected to the housing of the drive motor (41). It also includes a material collection mechanism, which is set on the support plate (1) and connected to the electric slider (3). The material collection mechanism is used to collect the cut magnetic cores. The material collection mechanism includes a limit rod (81), which is fixedly connected to the support plate (1). A sliding plate (82) is slidably connected to the limit rod (81). A support spring (83) is connected between the sliding plate (82) and the limit rod (81). A separation partition (84) is fixedly connected to the sliding plate (82). The separation partition (84) is located in the vertical groove of the placement platform (51) and between the two feeding inclined surfaces (53). A top rod (85) is fixedly connected to the sliding plate (82). A guide frame (86) is fixedly connected to one side of the inclined surface crossbar (58). The side of the frame (86) is parallelogram-shaped. A positioning frame (87) is fixedly connected between the two feeding inclined surfaces (53). A partition plate (88) is fixedly connected in the middle of the positioning frame (87). Two side rods (89) are fixedly connected to one side of the support plate (1). A moving plate (810) is slidably connected between the two side rods (89). A tension spring (891) is connected between the moving plate (810) and the support plate (1). A straight groove is opened in the middle of the moving plate (810). A stop rod (811) is fixedly connected to one side of the moving plate (810). Two positioning rods (812) are fixedly connected to one side of the support plate (1). A collection cylinder (813) is placed between the two positioning rods (812). A right-angle rod (814) is fixedly connected to one side of the electric slider (3). The right-angle rod (814) is in contact with the stop rod (811).

2. The slit cutting apparatus for producing soft magnetic ferrite cores as described in claim 1, characterized in that: The feeding mechanism includes a fixed block (61), which is fixedly connected to the placement platform (51). A support arm (62) is fixedly connected to the upper part of the fixed block (61), and a hopper (63) is fixedly connected to the support arm (62). An electric push rod (64) is fixedly connected to the fixed block (61), and a push block (65) is fixedly connected to the telescopic rod of the electric push rod (64). Two baffles (66) are fixedly connected to the push block (65), and the upper surface of the baffles (66) is flush with the material. The lower surface of the hopper (63) is in contact with the side frame (67) which is fixedly connected to both sides of the hopper (63). Two moving blocks (68) are slidably connected to each of the two side frames (67). A buffer spring (69) is connected between the moving block (68) and the side frame (67). The two moving blocks (68) form a group. A buffer wheel (610) is rotatably connected between the two moving blocks (68) in each group. A torsion spring (611) is connected between the buffer wheel (610) and the moving block (68).

3. The slit cutting apparatus for producing soft magnetic ferrite cores as described in claim 1, characterized in that: The material ejection mechanism includes two support crossbars (71), both of which are fixedly connected to the support plate (1). A pusher frame (72) is slidably connected between the two support crossbars (71). A return spring (73) is connected between the pusher frame (72) and the support crossbars (71). A vertical plate (74) is fixedly connected to the pusher frame (72). A connecting block (75) is fixedly connected to one side of the inclined crossbar (58). A swing block (76) is connected to the lower part of the connecting block (75) via a hinge. A spring sheet (77) is fixedly connected to the lower part of the swing block (76).

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