Compression molding device for soft magnetic ferrite

Abstract

The invention discloses a soft magnetic ferrite compression molding device, and relates to the technical field of soft magnetic ferrites.The soft magnetic ferrite compression molding device comprises a frame, a die casting box is placed in the middle of the lower portion of the frame, an electric push rod is fixedly connected to the inner top of the frame, a magnetic rod is fixedly connected to a telescopic part of the electric push rod, and a magnetic block is fixedly connected to the magnetic rod; the magnetic block attracts a pressing plate through magnetic force, the fixed part of the electric push rod is fixedly connected with guide frames symmetrically distributed along the electric push rod, and the telescopic part of the electric push rod is fixedly connected with a pressing rod. Sealing cover exhaust type material injection is carried out before mold pressing, air can be exhausted in the material injection process, materials in the box can be jointly compacted through cooperation of the box cover frame and injection pressure in the material injection pipe when the box is full, the sealing cover can prevent external air from entering the materials in the box, and therefore the compactness of the materials in the box can be improved during material injection, and the material injection efficiency is improved. Therefore, the subsequent pressing plate mold pressing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soft ferrite, in particular to a soft ferrite compression molding device. Background Art

[0002] It is favored for its high magnetic permeability, low loss and good frequency characteristics. Compression molding is a key process step in which powdered soft ferrite materials are pressed into a specific shape through a mold. This process is usually carried out on an automated production line to ensure efficient and consistent product quality.

[0003] In the existing compression molding process, since air is difficult to be completely expelled during injection, bubbles or voids are easily formed inside the finished product. The bubbles or voids will reduce the strength and stability of the product, affect the density and performance of the final product, thereby affecting its electromagnetic properties, and may cause cracks or breakage in subsequent processing.

[0004] Based on the above situation, the present invention proposes a soft ferrite compression molding device. Summary of the invention

[0005] In order to overcome the shortcoming that air is difficult to be completely discharged during injection, the present invention provides a soft ferrite compression molding device.

[0006] A soft ferrite molding device comprises a frame, a die-casting box is placed in the middle of the lower part of the frame, an electric push rod is fixedly connected to the inner top of the frame, a magnetic rod is fixedly connected to the telescopic part of the electric push rod, a magnetic block is fixedly connected to the magnetic block, a pressure plate is adsorbed by magnetic force, a guide frame symmetrically distributed along the electric push rod is fixedly connected to the fixed part of the electric push rod, a pressure rod is fixedly connected to the telescopic part of the electric push rod, a pressure frame is slidably connected to the guide frame, the pressure frame contacts the pressure rod, and the guide frame is slidably connected to a movable frame The pressing frame moves to the side away from the pressing rod and contacts the adjacent moving frame, a first spring is fixedly connected between the moving frame and the adjacent guide frame, the moving frame is slidably connected with a box cover frame for covering the top of the die-casting box, the adjacent box cover frames contact each other, the box cover frame contacts the adjacent pressing frame, a second spring is fixedly connected between the moving frame and the adjacent box cover frame, a side of the box cover frame on one side away from the moving frame is fixedly connected with a filling pipe, and the box cover frame on the other side is provided with an exhaust valve assembly.

[0007] Furthermore, a side of the pressing frame contacting the pressing rod is configured as an inclined surface, and a side of the pressing frame contacting the adjacent box cover frame is also configured as an inclined surface.

[0008] Furthermore, the exhaust valve assembly includes an exhaust pipe, which is fixedly connected to the box cover frame on the other side, the exhaust pipe is fixedly connected to the exhaust frame inside, the exhaust frame is slidably connected to a filter frame, the filter frame limits only gas to pass through, and a third spring is fixedly connected between the filter frame and the exhaust frame.

[0009] Furthermore, when the filter frame moves upwards until the filter holes contact the exhaust frame, the exhaust frame blocks all the filter holes of the filter frame.

[0010] Furthermore, the exhaust frame has at least two air holes.

[0011] Furthermore, it also includes sliding rods symmetrically distributed along the die-casting box, the sliding rods are slidably connected to the die-casting box, a fourth spring is fixedly connected between the sliding rods and the die-casting box, a clamping frame for clamping the pressure plate is slidably connected between the adjacent sliding rods on the same side, and a fifth spring is fixedly connected between the sliding rods and the clamping frame.

[0012] Furthermore, the inner side surface and the outer side surface of the top of the card frame are both configured as wedge-shaped surfaces, and the box cover frame moves to contact the wedge-shaped surfaces of the card frame.

[0013] Furthermore, when the pressing plate moves downward, it contacts the wedge-shaped surface on the inner side of the top of the bracket.

[0014] Furthermore, it also includes a fixed rod corresponding to the guide frame, the fixed rod is fixedly connected to the corresponding fixed rod, a clamping plate is slidably connected between all the fixed rods, a sixth spring is fixedly connected between the clamping plate and the fixed rod, the pressure rod is fixedly connected to an L-shaped push block symmetrically distributed along the pressure rod, and the L-shaped push block is squeezed and fitted with the clamping plate.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention performs cover-venting injection before molding, which can exhaust air during the injection process and, when the box is full, can compact the material in the box through the box cover frame and the injection pressure in the injection pipe. The cover can prevent external air from entering the material in the box. In this way, the density of the material in the box can be improved during injection, thereby improving the effect of subsequent pressure plate molding.

[0017] The present invention realizes the automatic capping function by driving the action of the magnetic rod, the pressure rod and other components through the electric push rod, and the entire capping process does not require manual intervention, thereby improving production efficiency and consistency.

[0018] According to the present invention, as the material is injected, the air in the die-casting box is squeezed into the exhaust pipe through the filter holes of the filter frame, and then discharged through the air holes of the exhaust frame, thereby ensuring the internal pressure balance and preventing the formation of bubbles. When the material is completely filled, the filter frame slides upward along the exhaust frame, and finally blocks the filter holes, thereby preventing external air from entering the die-casting box, and ensuring the purity and density of the material.

[0019] After the molding is completed, the pressing plate is locked in the die-casting box by the clamping frame to prevent the molded product from loosening during transportation. This design ensures the structural stability of the product and reduces the risk of damage during transportation.

[0020] The present invention inserts a card plate into a slide groove of a guide frame to temporarily block the pressing frame to prevent it from resetting too early, thereby extending the time for conveying the die-casting box and avoiding the situation that the last die-casting box that has been molded is not conveyed away in time or the next empty die-casting box is not conveyed in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the die-casting box, electric push rod, pressure plate and other components of the present invention.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the box cover frame, the injection pipe and the exhaust pipe of the present invention.

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the exhaust pipe, filter frame, exhaust frame and other components of the present invention.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the sliding rod, the fourth spring, the bracket and other components of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the fixing rod, the clamping plate, the sixth spring and other components of the present invention.

[0027] Figure 7 It is a three-dimensional structural schematic diagram of the components such as the clamping plate, the sixth spring and the L-shaped push block of the present invention.

[0028] The names and serial numbers of the parts in the figure are: 1. Frame, 2. Die-casting box, 3. Electric push rod, 4. Pressure plate, 5. Magnetic rod, 6. Magnetic block, 7. Guide frame, 8. Pressure rod, 9. Pressure frame, 10. Moving frame, 11. First spring, 12. Box cover frame, 13. Second spring, 14. Injection pipe, 15. Exhaust pipe, 16. Filter frame, 17. Exhaust frame, 18. Third spring, 19. Sliding rod, 20. Fourth spring, 21. Card frame, 22. Fifth spring, 23. Fixed rod, 24. Card plate, 25. Sixth spring, 26. L-shaped push block. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1: A soft ferrite molding device, such as Figure 1 and Figure 2 As shown, it includes a frame 1, a die-casting box 2 is placed in the middle of the lower part of the frame 1, an electric push rod 3 is fixedly connected to the inner top of the frame 1, a magnetic rod 5 is fixedly connected to the telescopic part of the electric push rod 3, a magnetic block 6 is fixedly connected to the bottom end of the magnetic rod 5, and a pressing plate 4 is adsorbed by the magnetic block 6 through magnetic force. The fixed part of the electric push rod 3 is fixedly connected to a guide frame 7 symmetrically distributed along the left and right sides of the electric push rod 3, and the telescopic part of the electric push rod 3 is fixedly connected to a pressing rod 8. The guide frame 7 is slidably connected to a pressing frame 9 in the left and right directions, and the pressing frame 9 contacts the pressing rod 8. The side of the pressing frame 9 contacting the pressing rod 8 is set as an inclined surface, and the guide frame 7 is slidably connected to a moving frame 10 in the left and right directions. The pressing frame 9 It moves to the side away from the pressure rod 8 and contacts with the adjacent moving frame 10. A first spring 11 is fixedly connected between the moving frame 10 and the adjacent guide frame 7. The lower part of the moving frame 10 is slidably connected to a box cover frame 12 along the up and down directions. The two box cover frames 12 contact each other and are used to jointly cover the top of the die-casting box 2. The upper part of the box cover frame 12 contacts with the adjacent pressure frame 9. The side of the pressure frame 9 contacting the adjacent box cover frame 12 is also set as an inclined surface. A second spring 13 is fixedly connected between the moving frame 10 and the adjacent box cover frame 12. A filling pipe 14 is fixedly connected to the lower side of the box cover frame 12 on the left side, and an exhaust valve assembly is provided on the box cover frame 12 on the right side.

[0031] First, the conveying device conveys an empty die-casting box 2 to the bottom of the pressure plate 4. During the conveying of the die-casting box 2, the electric push rod 3 is controlled to shorten upward, thereby driving the magnetic rod 5 and the pressure rod 8 to move upward. The magnetic rod 5 drives the pressure plate 4 to move upward first through the magnetic block 6. When the pressure rod 8 gradually moves up to contact the inclined surface of the pressure frame 9, the first spring 11 in the compressed state gradually rebounds first, thereby gradually pushing the moving frame 10 to slide and reset along the guide frame 7 to the middle. The moving frame 10 drives the pressure frame 9, the box cover frame 12 and the second spring 13 to move toward the middle as a whole until the two box cover frames 12 contact each other. At this time, the second spring 13 in the compressed state resets and drives the box cover frame 12 to slide downward until it is embedded in the die-casting box 2 conveyed to the bottom, forming The box cover frame 12 has the effect of sealing the die-casting box 2, and at the same time, the box cover frame 12 pushes the pressing frame 9 to continue to slide until it is separated from the adjacent moving frame 10. Then, the conveying device is paused, and the soft magnetic ferrite raw material to be molded is injected into the die-casting box 2 through the injection pipe 14. During the injection process, the air in the box can be discharged through the exhaust valve assembly. In summary, the present invention performs capping and exhausting injection before molding, which can not only exhaust air during the injection process, but also can compact the material in the box through the box cover frame 12 and the injection pressure in the injection pipe 14 when it is full, and the sealing can prevent external air from entering the material in the box. In this way, the density of the material in the box can be improved during injection, thereby improving the subsequent molding effect of the pressing plate 4.

[0032] After the closed injection is completed, the electric push rod 3 is controlled to extend downward, thereby driving the magnetic rod 5 to move downward, and the magnetic rod 5 drives the pressure plate 4 to move downward through the magnetic block 6. At the same time, the electric push rod 3 drives the pressure rod 8 to move downward, so that the pressure frame 9 slides along the guide frame 7 to the side away from the magnetic rod 5. The pressure frame 9 first squeezes the adjacent box cover frame 12 to slide to the side of the compressed second spring 13, so that the box cover frame 12 slides upward along the moving frame 10 to pull out the die-casting box 2. At this time, the pressure frame 9 slides to contact the adjacent moving frame 10, and pushes the moving frame 10 to slide to the side of the compressed first spring 11, so that the left and right box cover frames 12 move away from each other. When the box cover frames 12 move away from each other to the point that they no longer block the die-casting box 2, the pressure plate 4 drops into the die-casting box 2 to mold the soft ferrite raw material.

[0033] like Figure 3 and Figure 4 As shown, the exhaust valve assembly includes an exhaust pipe 15, the exhaust pipe 15 is fixedly connected to the lower part of the box cover frame 12 on the right side, the exhaust pipe 15 is fixedly connected to the exhaust frame 17 inside, the exhaust frame 17 has three air holes, the middle of the exhaust frame 17 is slidably connected with a filter frame 16 in the up and down directions, the filter frame 16 limits only the gas to pass through, and the soft magnetic ferrite raw material does not pass through, when the filter frame 16 moves upward until the filter holes contact the exhaust frame 17, the exhaust frame 17 blocks all the filter holes of the filter frame 16, and a third spring 18 is fixedly connected between the filter frame 16 and the exhaust frame 17.

[0034] While the box cover frame 12 seals the die-casting box 2, the soft ferrite raw material to be molded is injected into the die-casting box 2 through the injection pipe 14. During injection, as the space inside the die-casting box 2 gradually decreases, the internal pressure is greater than the external pressure, and the internal air is gradually squeezed into the exhaust pipe 15 through the filter holes of the filter frame 16, and then discharged from the exhaust pipe 15 through the air holes of the exhaust frame 17. As the material is filled, the filter frame 16 slides upward along the exhaust frame 17 under the push of the material until the exhaust frame 17 blocks the filter holes of the filter frame 16 to prevent external air from entering the die-casting box 2.

[0035] Embodiment 2: Based on embodiment 1, Figure 5 As shown, it also includes sliding rods 19 symmetrically distributed along the left and right sides of the die-casting box 2, there are four sliding rods 19, the sliding rods 19 are slidably connected to the die-casting box 2, a fourth spring 20 is fixedly connected between the sliding rods 19 and the die-casting box 2, and a bracket 21 is slidably connected between the adjacent sliding rods 19 on the same side along the left and right directions. The bracket 21 is used to clamp the pressure plate 4, and the inner side surface and the outer side surface of the top of the bracket 21 are both set as wedge-shaped surfaces. The box cover frame 12 moves and contacts with the wedge-shaped surface of the bracket 21. When the pressure plate 4 moves downward, it contacts with the wedge-shaped surface on the inner side of the top of the bracket 21, and a fifth spring 22 is fixedly connected between the sliding rod 19 and the bracket 21.

[0036] Under the action of the fourth spring 20, the slide bar 19 is allowed to drive the card frame 21 to decrease its adaptability, so that the card frame 21 does not affect the left and right movement and up and down movement trajectory of the box cover frame 12. When the box cover frame 12 is fully opened and the pressure plate 4 is downwardly molded, the pressure plate 4 will contact the inner wedge surface of the card frame 21 and squeeze the card frame 21 to slide along the slide bar 19 to compress the fifth spring 22. When the pressure plate 4 moves downward to disengage from the inner wedge surface of the card frame 21, the fifth spring 22 resets and drives the card frame 21 to reset to clamp the pressure plate 4. In this way, when the magnetic rod 5 moves upward, the magnetic rod 5 will disengage from the magnetic block 6, so that the pressure plate 4 remains in the die-casting box 2 to permanently solidify the molded soft magnetic ferrite, avoiding the loosening of the molded product in a short time during the transportation process. When the magnetic rod 5 is reset upward, a new pressure plate 4 with the magnetic block 6 is installed on the magnetic rod 5 by magnetic attraction.

[0037] Embodiment 3: Based on embodiment 2, Figure 6 and Figure 7 As shown, it also includes a fixing rod 23 corresponding to the guide frame 7, the fixing rod 23 is fixedly connected to the corresponding fixing rod 23, a clamping plate 24 is slidably connected between the left and right fixing rods 23 along the front and rear directions, a sixth spring 25 is fixedly connected between the clamping plate 24 and the fixing rod 23, and an L-shaped push block 26 symmetrically distributed along the left and right sides of the pressure rod 8 is fixedly connected to the front side of the pressure rod 8, and the L-shaped push block 26 is squeezed and fitted with the clamping plate 24.

[0038] Initially, the L-shaped push block 26 blocks the card plate 24, so that the sixth spring 25 is in a compressed state. When the pressure rod 8 drives the L-shaped push block 26 to move downward to disengage from the card plate 24, the sixth spring 25 is reset, thereby driving the card plate 24 to slide backward along the fixed rod 23 to the slide groove of the insertion guide frame 7. At this time, the pressure frame 9 and the moving frame 10 have not yet slid out of the card plate 24. Subsequently, the moving frame 10 continues to slide outward, squeezing the card plate 24 forward, so that the pressure frame 9 and the moving frame 10 can pass over the card plate 24 outward.

[0039] When the pressure rod 8 gradually moves upward to contact the inclined surface of the pressure frame 9, the pressure rod 8 continues to move upward, which will cause the first spring 11 in the compressed state to gradually rebound until the pressure frame 9 contacts the outer side of the clamping plate 24. At this time, since the pressure frame 9 is temporarily blocked by the clamping plate 24 and cannot be reset, the two box cover frames 12 cannot continue to approach each other temporarily. Only when the electric push rod 3 drives the pressure rod 8 to move upward into place, the L-shaped push block 26 can push the clamping plate 24 forward, so that the clamping plate 24 no longer blocks the pressure frame 9, and the box cover frame 12 can be completely reset, extending the time for conveying the die-casting box 2, preventing the previous molded die-casting box 2 from being not sent away in time, resulting in the box cover frame 12 clamping the die-casting box 2 and being unable to be sent away, or the next empty die-casting box 2 is not delivered in time, resulting in the subsequent downward empty pressure of the pressure plate 4.

[0040] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the appended claims.

Claims

1. A soft ferrite molding device, characterized in that: The invention comprises a frame (1), a die-casting box (2) is placed in the middle of the lower part of the frame (1), an electric push rod (3) is fixedly connected to the inner top of the frame (1), a magnetic rod (5) is fixedly connected to the telescopic part of the electric push rod (3), the magnetic rod (5) is fixedly connected to a magnetic block (6), the magnetic block (6) is adsorbed with a pressure plate (4) by magnetic force, the fixed part of the electric push rod (3) is fixedly connected to a guide frame (7) symmetrically distributed along the electric push rod (3), the telescopic part of the electric push rod (3) is fixedly connected to a pressure rod (8), the guide frame (7) is slidably connected to a pressure frame (9), the pressure frame (9) is in contact with the pressure rod (8), the guide frame (7) is slidably connected to a moving frame (10), the pressure frame (9) is moved to The side away from the pressure rod (8) moves to contact the adjacent moving frame (10), a first spring (11) is fixedly connected between the moving frame (10) and the adjacent guide frame (7), the moving frame (10) is slidably connected to a box cover frame (12) for covering the top of the die-casting box (2), the adjacent box cover frames (12) are in contact with each other, the box cover frame (12) is in contact with the adjacent pressure frame (9), a second spring (13) is fixedly connected between the moving frame (10) and the adjacent box cover frame (12), a side of the box cover frame (12) away from the moving frame (10) is fixedly connected to a filling pipe (14), and the other side of the box cover frame (12) is provided with an exhaust valve assembly.

2. A soft ferrite molding device as claimed in claim 1, characterized in that: The side of the pressing frame (9) contacting the pressing rod (8) is arranged as an inclined surface, and the side of the pressing frame (9) contacting the adjacent box cover frame (12) is also arranged as an inclined surface.

3. A soft ferrite molding device as claimed in claim 2, characterized in that: The exhaust valve assembly comprises an exhaust pipe (15), the exhaust pipe (15) being fixedly connected to the box cover frame (12) on the other side, the exhaust pipe (15) being fixedly connected to an exhaust frame (17) inside, the exhaust frame (17) being slidably connected to a filter frame (16), the filter frame (16) limiting the passage of only gas, and a third spring (18) being fixedly connected between the filter frame (16) and the exhaust frame (17).

4. A soft ferrite molding device as claimed in claim 3, characterized in that: When the filter frame (16) moves upwards until the filter holes contact the exhaust frame (17), the exhaust frame (17) blocks all the filter holes of the filter frame (16).

5. A soft ferrite molding device as claimed in claim 4, characterized in that: The exhaust frame (17) has at least two air holes.

6. A soft ferrite compression molding device as claimed in claim 5, characterized in that: It also includes sliding rods (19) symmetrically distributed along the die-casting box (2), the sliding rods (19) are slidably connected to the die-casting box (2), a fourth spring (20) is fixedly connected between the sliding rods (19) and the die-casting box (2), a clamping frame (21) for clamping the pressure plate (4) is slidably connected between the adjacent sliding rods (19) on the same side, and a fifth spring (22) is fixedly connected between the sliding rods (19) and the clamping frame (21).

7. A soft ferrite compression molding device as claimed in claim 6, characterized in that: The inner side surface and the outer side surface of the top of the card frame (21) are both arranged as wedge-shaped surfaces, and the box cover frame (12) moves to contact with the wedge-shaped surface of the card frame (21).

8. A soft ferrite compression molding device as claimed in claim 7, characterized in that: When the pressing plate (4) moves downward, it contacts the wedge-shaped surface on the inner side of the top of the bracket (21).

9. A soft ferrite compression molding device as claimed in claim 8, characterized in that: It also includes a fixing rod (23) corresponding to the guide frame (7), the fixing rod (23) is fixedly connected to the corresponding fixing rod (23), a clamping plate (24) is slidably connected between all the fixing rods (23), a sixth spring (25) is fixedly connected between the clamping plate (24) and the fixing rod (23), the pressure rod (8) is fixedly connected to an L-shaped push block (26) symmetrically distributed along the pressure rod (8), and the L-shaped push block (26) is squeezed and matched with the clamping plate (24).

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