Magnetic core pressing die and magnetic core pressing device

Abstract

The utility model discloses a magnetic core pressing die and a magnetic core pressing device.The magnetic core pressing device comprises a female die and a punch mechanism, the female die is provided with a forming cavity, the punch mechanism comprises an upper punching assembly and a lower punching assembly, the upper punching assembly comprises an upper punch, the upper punch is arranged above the female die in a lifting mode, and the lower punch is arranged above the female die in a lifting mode. The upper punching assembly comprises an upper punching head and a core rod, the upper punching head ascends and descends to stretch into or retreat from the forming cavity, the lower punching assembly comprises a lower punching head and a core rod, the lower punching head ascends and descends to stretch into or retreat from the forming cavity, the lower punching head ascends and descends to be arranged below the female die, and the core rod ascends and descends to be arranged in the lower punching head. The core rod is arranged in the forming cavity in a penetrating mode and embedded into the upper punch, the core rod can divide the forming cavity into a first cavity and a second cavity, the first cavity and the second cavity are used for forming magnetic cores respectively, and the first cavity and the second cavity are communicated through a connecting cavity. And a connecting part is formed between the magnetic cores.

Description

Technical Field

[0001] This application relates to the field of magnetic core manufacturing technology, and in particular to a magnetic core pressing mold and a magnetic core pressing device. Background Technology

[0002] A magnetic core is a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core materials. Manganese-zinc ferrite features high permeability and high flux density, along with low losses. Nickel-zinc ferrite exhibits extremely high impedance and low permeability (less than a few hundred). Ferrite cores are used in coils and transformers in various electronic devices. Pressing is a crucial manufacturing process in core production, requiring the use of a pressing die to shape the powdered material for subsequent sintering.

[0003] Currently, most multi-cavity or single-cavity pressing dies on the market have a bundled, fixed structure. This means they utilize multiple dies with single cavities, each containing only one set of punches and capable of producing only one product at a time, which are bundled together by an external structure to form a multi-cavity die. When one of the single-cavity dies malfunctions and requires adjustment or replacement, the entire multi-cavity die needs to be adjusted, inevitably affecting the remaining single-cavity dies and causing production to halt. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a magnetic core pressing mold that can simultaneously produce two magnetic cores, thereby improving production efficiency, greatly simplifying the mold structure, facilitating maintenance, and reducing costs.

[0005] This application also proposes a magnetic core pressing device that can produce two magnetic cores simultaneously, thereby improving production efficiency, greatly simplifying the structure of the device, facilitating maintenance, and reducing costs.

[0006] According to the first aspect of the present application, a magnetic core pressing mold includes a die and a punch mechanism. The die has a forming cavity. The punch mechanism includes an upper punch assembly and a lower punch assembly. The upper punch assembly includes an upper punch, which is raised and lowered above the die and can move in and out of the forming cavity. The lower punch assembly includes a lower punch and a mandrel. The lower punch is raised and lowered below the die and can move in and out of the forming cavity. The mandrel is raised and lowered inside the lower punch, passes through the forming cavity, and is embedded in the upper punch. The mandrel can divide the forming cavity into a first chamber and a second chamber. The first chamber and the second chamber are respectively used to form magnetic cores. The first chamber and the second chamber are connected by a connecting cavity, so that a connecting portion is formed between the magnetic cores.

[0007] According to the magnetic core pressing mold described in the first aspect of this application, it has at least the following beneficial effects: the molding cavity is divided into a first chamber and a second chamber by the mandrel, which enables the simultaneous production of two magnetic cores and improves production efficiency; the first chamber and the second chamber are connected by a connecting cavity, so that the magnetic cores form a head connection part to form an integral structure. At this time, only one set of punches is needed to realize the production of two magnetic cores, which greatly simplifies the structure of the mold, facilitates maintenance, and reduces costs.

[0008] According to the magnetic core pressing mold of the first aspect of this application, there are two forming cavities and two sets of punch mechanisms, with each set of punch mechanisms corresponding to one of the two forming cavities.

[0009] According to the magnetic core pressing mold of the first aspect of this application, the die is provided with a mounting plate, which is used to connect with external components.

[0010] According to the magnetic core pressing mold of the first aspect of this application, the upper punch assembly further includes an upper fixed seat, and the upper punch head is disposed on the upper fixed seat.

[0011] According to the magnetic core pressing mold of the first aspect of this application, the upper punch assembly further includes an upper driving member, which is connected to the upper fixed base.

[0012] According to the magnetic core pressing mold of the first aspect embodiment of this application, the lower punch assembly further includes a first lower fixing seat and a second lower fixing seat, the lower punch head is disposed on the first lower fixing seat, and the core rod is disposed on the second lower fixing seat and passes through the first lower fixing seat.

[0013] According to the magnetic core pressing mold of the first aspect embodiment of this application, the lower punch assembly further includes a first lower driving member and a second lower driving member, wherein the first lower driving member is connected to the first lower fixed seat and the second lower driving member is connected to the second lower fixed seat.

[0014] According to the magnetic core pressing mold of the first aspect of this application, the width of the core rod is less than 2 mm.

[0015] According to the magnetic core pressing mold of the first aspect of this application, a plurality of core rods are provided, and the plurality of core rods are arranged in a plurality of arrangements.

[0016] The magnetic core pressing apparatus according to the second aspect of this application includes the magnetic core pressing mold according to the first aspect of this application.

[0017] The magnetic core pressing device according to the second aspect of the present application has at least the following advantages: the molding cavity is divided into a first chamber and a second chamber by a mandrel, which enables the simultaneous production of two magnetic cores and improves production efficiency; the first chamber and the second chamber are connected by a connecting cavity, so that the magnetic cores form a head connection part to form an integral structure. At this time, only one set of punches is needed to realize the production of two magnetic cores, which greatly simplifies the structure of the device, facilitates maintenance, and reduces costs.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the magnetic core pressing mold according to the first aspect of this application;

[0021] Figure 2 This is a partial structural schematic diagram of the magnetic core pressing mold according to the first aspect of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a magnetic core produced by a magnetic core pressing mold according to the first aspect of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] Die 100; forming cavity 110; first chamber 120; second chamber 130; connecting cavity 140; mounting plate 150; upper punch 210; upper fixed seat 220; lower punch 310; mandrel 320; first lower fixed seat 330; second lower fixed seat 340; magnetic core 400; connecting part 410. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Reference Figures 1 to 3 This application provides a magnetic core pressing mold, including a die 100 and a punch mechanism. The die 100 is provided with a forming cavity 110. The punch mechanism includes an upper punch assembly and a lower punch assembly. The upper punch assembly includes an upper punch 210, which is movably positioned above the die 100 and can move in and out of the forming cavity 110. The lower punch assembly includes a lower punch 310 and a mandrel 320, which is movably positioned below the die 100. The mandrel 320 is raised and lowered to extend into or retract from the molding cavity 110. The mandrel 320 is raised and lowered within the lower punch 310. The mandrel 320 passes through the molding cavity 110 and is embedded in the upper punch 210. The mandrel 320 can divide the molding cavity 110 into a first chamber 120 and a second chamber 130. The first chamber 120 and the second chamber 130 are respectively used to form the magnetic core 400. The first chamber 120 and the second chamber 130 are connected by a connecting cavity 140, so that a connecting part 410 is formed between the magnetic cores 400.

[0030] The molding cavity 110 is divided into a first chamber 120 and a second chamber 130 by the mandrel 320, which enables the simultaneous production of two magnetic cores 400 and improves production efficiency. The first chamber 120 and the second chamber 130 are connected by a connecting cavity 140, so that the magnetic cores 400 form a head connection part 410 to form an integrated structure. At this time, only one set of punches is needed to realize the production of two magnetic cores 400, which greatly simplifies the structure of the mold, facilitates maintenance, and reduces costs.

[0031] Reference Figures 1 to 3 In this embodiment, two forming cavities 110 are provided, and two sets of punch mechanisms are provided, with each set of punch mechanisms corresponding to one of the two forming cavities 110. The two forming cavities 110 can simultaneously produce four magnetic cores 400, which are then pressed by the two sets of punch mechanisms, thereby further improving production efficiency. The two sets of punch mechanisms operate independently, thus avoiding mutual interference and ensuring product quality.

[0032] It should be noted that the forming cavity 110 may also be provided with three or four, and the punch mechanism may also be provided with three or four, etc. This application does not limit this.

[0033] Reference Figure 1 In some embodiments, the die 100 is provided with a mounting plate 150 for connecting to external components. Using the mounting plate 150 to connect to external components facilitates the mounting of the die 100 onto the base of the magnetic core pressing device, resulting in a simple structure and easy operation.

[0034] The upper punch assembly also includes an upper fixed base 220, on which the upper punch 210 is disposed. By placing the upper punch 210 on the upper fixed base 220, installation of the upper punch 210 is facilitated, resulting in a simple structure and easy operation. Furthermore, the upper punch assembly also includes an upper driving component, which is connected to the upper fixed base 220. The upper driving component is configured as a cylinder. The upper driving component drives the upper fixed base 220 to move, causing the upper fixed base 220 to move the upper punch 210 up and down, thereby cooperating with the lower punch assembly to press the magnetic core 400. This design is simple in structure and stable in operation.

[0035] It should be noted that the upper drive component can also use a motor and a cam in combination to replace the cylinder, and this application does not limit this.

[0036] The punch assembly also includes a first lower fixing seat 330 and a second lower fixing seat 340. The punch head 310 is disposed in the first lower fixing seat 330, and the mandrel 320 is disposed in the second lower fixing seat 340 and passes through the first lower fixing seat 330. This structure facilitates the installation of the punch head 310 and the mandrel 320, resulting in a simple structure and easy operation. Furthermore, the punch assembly also includes a first lower driving member and a second lower driving member. The first lower driving member is connected to the first lower fixing seat 330, and the second lower driving member is connected to the second lower fixing seat 340. The first lower drive unit drives the first lower fixed seat 330 to move, causing the first lower fixed seat 330 to drive the lower punch 310 to move up and down, thereby cooperating with the upper punch assembly to press the magnetic core 400; the second lower drive unit drives the second lower fixed seat 340 to move, causing the mandrel 320 to move up and down and pass through the first lower fixed seat 330, the lower punch 310, the forming cavity 110 and the upper punch 210 in sequence, thereby facilitating the pressing of the magnetic core 400. The structure is simple and the operation is convenient.

[0037] Both the first and second lower drive components are cylinders, which are simple in structure and stable in operation. Of course, the first and second lower drive components can also be replaced by a motor and a cam instead of cylinders, and this application does not impose any restrictions on this.

[0038] In this embodiment, the width of the mandrel 320 is less than 2 mm, thereby allowing the two magnetic cores 400 within the molding cavity 110 to be connected by a tiny connecting portion 410. This saves costs and ensures a more stable integrated structure formed by the two magnetic cores 400, guaranteeing product quality. Furthermore, multiple mandrels 320 are provided, arranged in an orderly manner, which improves the strength, stability, and reliability of the mandrels 320.

[0039] A second aspect of this application also provides a magnetic core pressing apparatus, including the magnetic core pressing mold described in the first aspect of this application.

[0040] The molding cavity 110 is divided into a first chamber 120 and a second chamber 130 by the mandrel 320, which enables the simultaneous production of two magnetic cores 400 and improves production efficiency. The first chamber 120 and the second chamber 130 are connected by a connecting cavity 140, so that the magnetic cores 400 form a head connection part 410 to form an integrated structure. At this time, only one set of punches is needed to realize the production of two magnetic cores 400, which greatly simplifies the structure of the device, facilitates maintenance, and reduces costs.

[0041] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0043] It should also be noted that, in the description of this application, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0044] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0045] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A magnetic core compression mold characterized by, The application relates to a magnetic core pressing die, which comprises a female die provided with a forming cavity and a punch mechanism, the punch mechanism comprises an upper punch assembly and a lower punch assembly, the upper punch assembly comprises an upper punch, the upper punch is arranged above the female die and can be lifted to extend into or exit the forming cavity, the lower punch assembly comprises a lower punch and a core rod, the lower punch is arranged below the female die and can be lifted to extend into or exit the forming cavity, the core rod is arranged in the lower punch and can be arranged in the forming cavity and embedded in the upper punch, the core rod can divide the forming cavity into a first cavity and a second cavity, the first cavity and the second cavity are used for forming magnetic cores respectively, and the first cavity and the second cavity are communicated through a connecting cavity so that connecting portions are formed between the magnetic cores.

2. The magnetic core compression mold according to claim 1, characterized by, The forming cavity is provided with two forming cavities, and the punch mechanism is provided with two punch mechanisms, and the two punch mechanisms correspond to the two forming cavities one by one.

3. The magnetic core compression mold of claim 1, wherein, The female die is provided with a mounting plate, and the mounting plate is used for connecting with external components.

4. The magnetic core compression mold of claim 1, wherein, The upper punch assembly further comprises an upper fixed seat, and the upper punch is arranged in the upper fixed seat.

5. The magnetic core compression mold of claim 4, wherein, The upper punch assembly further comprises an upper driving member, and the upper driving member is connected with the upper fixed seat.

6. The magnetic core compression mold of claim 1, wherein, The lower punch assembly further comprises a first lower fixed seat and a second lower fixed seat, the lower punch is arranged in the first lower fixed seat, and the core rod is arranged in the second lower fixed seat and arranged in the first lower fixed seat.

7. The magnetic core compression mold of claim 6, wherein, The lower punch assembly further comprises a first lower driving member and a second lower driving member, the first lower driving member is connected with the first lower fixed seat, and the second lower driving member is connected with the second lower fixed seat.

8. The magnetic core compression mold of claim 1, wherein, The width of the core rod is less than 2 mm.

9. The magnetic core compression mold of claim 8, wherein, The core rod is provided with a plurality of core rods.

10. A magnetic core pressing apparatus characterized by comprising: The application further relates to a magnetic core pressing die comprising any one of the magnetic core pressing dies in claims 1 to 9.

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