Rotary pressurizing mechanism for magnetic core production

Abstract

The utility model discloses a rotary pressurizing mechanism for magnetic core production, which comprises an upper rotary table and a lower rotary table, a plurality of upper die rods are uniformly distributed on the upper rotary table, lower die holders in one-to-one correspondence with the upper die rods are uniformly distributed on the lower rotary table, the lower end of each lower die holder is provided with a material ejecting frame movably stretching out and drawing back along the vertical direction, and the material ejecting frames are arranged on the upper rotary table. A fixed shaft is rotationally installed below the lower rotating disc through a bearing, a transverse rod is perpendicularly connected to the side edge of the fixed shaft, an inclined table is installed at the end, extending to the position below the material jacking frame, of the transverse rod, a roller is installed in the material jacking frame, and when the lower die base rotates along with the lower rotating disc to approach the inclined table, the roller rolls along the inclined face of the inclined table so as to achieve jacking of the material jacking frame. According to the spinning mechanism, the jacking frame and the inclined table are arranged, so that the whole spinning mechanism can achieve jacking and discharging operation on magnetic core finished products under the condition that external driving force is not needed, the structure is simpler, and the manufacturing cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic core production and processing, in particular to a rotary pressurizing mechanism for magnetic core production. Background Art

[0002] A magnetic core is a sintered magnetic metal oxide composed of a mixture of various iron oxides. Ferrite cores are used in coils and transformers of various electronic devices. Rotary press molding is often used for the processing of magnetic cores, which can effectively improve production efficiency.

[0003] The rotary pressurizing mechanism is the main structure of the magnetic core rotary press, which is mainly composed of an upper turntable and a lower turntable. After the upper die rod on the upper turntable presses the lower die seat on the lower turntable, the formed magnetic core will remain inside the lower die seat, making it inconvenient to discharge the material. Usually, a pneumatic cylinder and piston rod are set under the lower die seat to push the material. For a rotary press, due to the large number of lower die seats, the use of this type of ejecting mechanism requires external air supply and oil pipes, which is not only complicated in layout but also has high manufacturing costs.

[0004] Therefore, we propose a rotary pressurizing mechanism for magnetic core production to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a rotary pressurizing mechanism for producing magnetic cores, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A rotary pressurizing mechanism for producing magnetic cores comprises an upper turntable and a lower turntable, wherein a plurality of upper mold rods are evenly distributed on the upper turntable, and lower mold seats corresponding to the upper mold rods are evenly distributed on the lower turntable, and a ejecting frame that is movable and retractable in the vertical direction is provided at the lower end of each lower mold seat, and a fixed shaft is rotatably installed under the lower turntable through a bearing, and a cross bar is vertically connected to the side of the fixed shaft, and an inclined platform is installed at one end of the cross bar extending to the bottom of the ejecting frame, and a roller is installed inside the ejecting frame, and when the lower mold seat rotates with the lower turntable and approaches the inclined platform, the roller rolls along the inclined surface of the inclined platform to realize the lifting of the ejecting frame.

[0008] In a further embodiment, the inclined height of the inclined surface of the ramp is greater than the depth of the mold cavity of the lower mold base.

[0009] In a further embodiment, a push rod is connected to the top of the ejector rack, and a top plate is installed at one end of the push rod extending into the mold cavity of the lower mold base, and the top plate is consistent with the bottom of the mold cavity.

[0010] In a further embodiment, three ejector rods are evenly arranged along the axial direction on each ejector rack.

[0011] In a further embodiment, a spring is installed between the ejector rack and the lower die base, and the vertical center line of the spring coincides with the vertical center lines of the ejector rack and the lower die base.

[0012] In a further embodiment, a straight rail is vertically installed on the outer side wall of the fixed axis, and a sliding sleeve is connected to the end of the cross bar close to the fixed axis. The sliding sleeve is slidably sleeved around the outer periphery of the straight rail, and the sliding sleeve and the straight rail are locked by bolts.

[0013] In a further embodiment, a plurality of positioning holes are uniformly formed on the straight rail along the length direction, and there are at least two bolts for locking between the sliding sleeve and the straight rail.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides a ejector rack and an inclined platform, so that when the lower turntable rotates, it can drive the ejector rack below the lower die base to make a circular motion. After the roller contacts the inclined platform, it will roll upward along the inclined position of the inclined platform, thereby driving the ejector rack to jack up, so that the entire spinning mechanism can realize the jacking and discharging operation of the finished magnetic core without the need for external driving force. Not only is the structure simpler, but the manufacturing cost is also lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower die base and the ejector rack of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the lower die base and the ejector rack installed in the utility model.

[0020] In the figure: 1. Upper turntable; 2. Lower turntable; 3. Upper die rod; 4. Lower die base; 5. Ejector rack; 51. Ejector rod; 52. Ejector plate; 53. Roller; 6. Inclined table; 7. Cross bar; 71. Sliding sleeve; 8. Fixed shaft; 81. Straight rail; 9. Spring. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-2 A rotary pressurizing mechanism for producing magnetic cores comprises an upper turntable 1 and a lower turntable 2. A plurality of upper die rods 3 are evenly distributed on the upper turntable 1, and lower die seats 4 corresponding to the upper die rods 3 are evenly distributed on the lower turntable 2. The upper turntable 1 and the lower turntable 2 rotate coaxially. The lower end of each lower die seat 4 is provided with a ejector rack 5 that is movable and retractable in the vertical direction. When the ejector rack 5 is raised, the finished product in the die cavity of the lower die seat 4 can be ejected. The lower turntable 2 is provided with a rotating shaft 5 through a bearing. The fixed axis 8 allows the lower turntable 2 to rotate around the fixed axis 8. The side of the fixed axis 8 is vertically connected to a cross bar 7, and the cross bar 7 extends to one end under the ejector rack 5 and is equipped with an inclined platform 6. The ejector rack 5 is equipped with a roller 53 inside. When the lower turntable 2 rotates, the lower mold base 4 rotates and moves with the lower turntable 2. When it approaches the inclined platform 6, the roller 53 rolls along the inclined surface of the inclined platform 6, thereby driving the ejector rack 5 to rise, so as to realize the jacking of the finished product in the mold cavity of the lower mold base 4.

[0025] See also Figure 3-4The inclined height of the inclined surface of the ramp 6 is greater than the cavity depth of the lower mold base 4. Therefore, when the roller 53 rolls along the inclined surface of the ramp 6 to the highest point, it is ensured that the finished product can be completely ejected from the mold cavity. In addition, in order to prevent the roller 53 from being stuck in the connection with the ramp 6, the plane where the lowest point of the roller 53 when not compressed is located is set to be higher than the plane where the lowest point of the inclined surface of the ramp 6 is located, thereby ensuring that the roller 53 can roll along the inclined surface when it contacts the ramp 6.

[0026] See also Figure 3-4 In order to improve the ejection effect of the finished material, a ejector rack 5 is provided with a ejector rod 51 connected to the top, and the ejector rod 51 penetrates into the mold base 4, and a top plate 52 is installed at one end of the ejector rod 51 extending into the mold cavity of the lower mold base 4. The top plate 52 is consistent with the bottom of the mold cavity. When the magnetic core is molded, the top plate 52 is close to the bottom of the mold cavity, and the top plate 52 is tightly fitted around the inner wall of the mold cavity. Furthermore, three ejector rods 51 are evenly arranged along the axial direction on each ejector rack 5, thereby maintaining the balance of the lifting force on the top plate 52.

[0027] See also Figure 3-4 A spring 9 is also installed between the ejector rack 5 and the lower mold base 4, and the vertical center line of the spring 9 coincides with the vertical center line of the ejector rack 5 and the lower mold base 4, so that the ejector rack 5 compresses the spring 9 and shortens it when it is lifted. After the ejector rack 5 passes the highest point of the inclined platform 6, the ejector rack 5 can be helped to descend and reset under the weight of its own weight and the elastic reaction force of the spring 9, so as to empty the mold cavity. Then, the mold cavity can be filled with material for the next molding operation.

[0028] See also Figure 2 The cam 71 is fixed on the top of the platform 6 so that the lifting height of the platform 6 can be adjusted. In order to facilitate the adjustment of the installation height of the inclined platform 6, a straight rail 81 is vertically installed on the outer side wall of the fixed shaft 8, and a sliding sleeve 71 is connected to the end of the cross bar 7 close to the fixed shaft 8. The sliding sleeve 71 slides around the outer periphery of the straight rail 81, and the sliding sleeve 71 and the straight rail 81 are locked by bolts. When the sliding sleeve 71 is installed at different heights of the straight rail 81, the height of the inclined platform 6 from the jacking rack 5 is different, so that the jacking height of the jacking rack 5 can be adjusted. Furthermore, a number of positioning holes are evenly opened on the straight rail 81 along the length direction, and there are at least two bolts for locking between the sliding sleeve 71 and the straight rail 81, so that the two bolts can limit each other, thereby improving the firmness of the cross bar 7 support and preventing it from deflecting.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rotary pressurizing mechanism for producing magnetic cores, comprising an upper turntable (1) and a lower turntable (2), wherein a plurality of upper die rods (3) are evenly distributed on the upper turntable (1), and lower die holders (4) corresponding one to one with the upper die rods (3) are evenly distributed on the lower turntable (2), characterized in that: The lower end of each lower die base (4) is provided with a lifting frame (5) that is movable and retractable in the vertical direction. A fixed shaft (8) is rotatably installed under the lower turntable (2) through a bearing. The side of the fixed shaft (8) is vertically connected to a cross bar (7), and an inclined platform (6) is installed at one end of the cross bar (7) extending to the bottom of the lifting frame (5). A roller (53) is installed inside the lifting frame (5). When the lower die base (4) rotates along the lower turntable (2) and approaches the inclined platform (6), the roller (53) rolls along the inclined surface of the inclined platform (6) to realize the lifting of the lifting frame (5).

2. A rotary pressurizing mechanism for producing magnetic cores according to claim 1, characterized in that: The inclined height of the inclined surface of the inclined platform (6) is greater than the depth of the mold cavity of the lower mold base (4).

3. The rotary pressurizing mechanism for producing magnetic cores according to claim 1, characterized in that: The top of the ejector rack (5) is connected to a ejector rod (51), and one end of the ejector rod (51) extending into the mold cavity of the lower mold base (4) is installed with a ejector plate (52), and the ejector plate (52) is consistent with the bottom of the mold cavity.

4. The rotary pressurizing mechanism for producing magnetic cores according to claim 3, characterized in that: Three ejector rods (51) are evenly arranged along the axial direction on each ejector rack (5).

5. The rotary pressurizing mechanism for producing magnetic cores according to claim 1, characterized in that: A spring (9) is also installed between the ejector frame (5) and the lower die base (4), and the vertical center line of the spring (9) coincides with the vertical center lines of the ejector frame (5) and the lower die base (4).

6. The rotary pressurizing mechanism for producing magnetic cores according to claim 1, characterized in that: A straight rail (81) is vertically mounted on the outer side wall of the fixed shaft (8), and a sliding sleeve (71) is connected to one end of the cross bar (7) close to the fixed shaft (8). The sliding sleeve (71) is slidably sleeved on the outer periphery of the straight rail (81), and the sliding sleeve (71) and the straight rail (81) are locked by bolts.

7. The rotary pressurizing mechanism for producing magnetic cores according to claim 6, characterized in that: The straight rail (81) is evenly provided with a plurality of positioning holes along the length direction, and there are at least two bolts for locking between the sliding sleeve (71) and the straight rail (81).

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