A new magnet adjusting mechanism

Abstract

The utility model relates to the technical field of automobile parts production and manufacturing, concretely to a novel magnet adjusting mechanism, solve the problem that the background art has proposed, it includes core axle, thread, annular magnet and mould main part, the core axle outer wall is equipped with external thread, the front end inlay has annular magnet, the core axle is connected through the thread and the thread hole of mould main part screwing, the utility model discloses a structure that the core axle thread connection is combined with the front end annular magnet, has strengthened the adsorption firmness to the axle metal spare, effectively prevented its in the production process displacement or drop, has guaranteed the continuity of production, has utilized the accurate drive of thread pair simultaneously, has realized metal spare installation height's nimble, stepless adjustment, has guaranteed product positioning accuracy and coating quality, besides, through the sealing design of taper surface or sealing washer, solved the material leakage problem under the high pressure injection environment, thereby has improved production efficiency and product quality on the whole.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically a novel magnet adjustment mechanism. Background Technology

[0002] In the manufacturing process of automotive sunroofs, metal parts such as screws and shafts need to be integrated into the sunroof assembly through polyurethane (PU) foaming process. During this process, these metal parts must be precisely and reliably fixed in the predetermined positions of the foaming mold.

[0003] Currently, there are two main technical solutions for fixing the aforementioned metal parts, especially shaft-type parts. The first is to use solid magnets for adsorption and fixing. However, because the magnetic field lines of solid magnets are concentrated, the adsorption area in contact with the shaft-type parts is small, resulting in insufficient magnetic adsorption force and inability to provide reliable fixing. These parts are prone to displacement or detachment under mold movement or injection impact. The second method is to use non-magnetic mechanical clamping. While this method can achieve fixing, its structure is usually more complex, and once installed, its height cannot be finely adjusted, making it difficult to adapt to the coating thickness requirements of different products. More seriously, such clamps pose a risk of insecure fixing under the high-pressure environment of PU material injection.

[0004] In summary, existing technologies have significant drawbacks. They cannot effectively hold and fix shaft-like parts, and the fixed height is not adjustable, resulting in poor product positioning accuracy. Metal parts are also prone to loosening and falling off during production. These problems not only cause production interruptions and severely impact production efficiency, but may also lead to the scrapping of defective products and even damage to expensive mold cavities, making it impossible to guarantee the continuity of product production and the consistency of final product quality. Therefore, there is an urgent need for a fixing mechanism that can firmly hold shaft-like parts, with a flexible and precise adjustable installation height, and can adapt to the high-pressure injection molding environment. Utility Model Content

[0005] To solve the above problems, this utility model provides the following technical solution: a novel magnet adjustment mechanism, including a mandrel, a thread, an annular magnet, and a mold body. The outer wall of the mandrel is threaded, and an annular magnet is embedded at the front end. The mandrel is screwed into the threaded hole of the mold body through the thread. The front end of the mandrel that mates with the mold body is provided with a tapered sealing surface. The threaded hole entrance of the mold body is provided with a matching tapered hole. A sealing ring is fitted on the mandrel, and an annular groove for installing the sealing ring is opened on the mandrel.

[0006] Preferably, the tail of the mandrel has an operating groove for inserting a tool to rotate and adjust the mandrel.

[0007] Preferably, the front end of the mandrel is provided with an annular groove for accommodating a ring magnet, and the ring magnet is press-fitted into the annular groove by an interference fit.

[0008] Preferably, the mandrel is made of a non-magnetic material.

[0009] Preferably, the ring magnet is made of a permanent magnet material.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: by adopting a structure that combines a mandrel threaded connection with a front-end annular magnet, the adsorption firmness of shaft-type metal parts is enhanced, effectively preventing them from shifting or falling off during production, thus ensuring the continuity of production. At the same time, by utilizing the precise transmission of the threaded pair, flexible and stepless adjustment of the installation height of metal parts is achieved, ensuring product positioning accuracy and coating quality. In addition, the sealing design of the conical surface or sealing ring solves the problem of material leakage under high-pressure injection environment, thereby improving overall production efficiency and product quality. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the mandrel of this utility model.

[0012] In the diagram: 1. Mandrel; 2. Thread; 3. Ring magnet; 4. Mold body; 5. Conical sealing surface; 6. Sealing ring; 7. Operating groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1 As shown, the novel magnet adjustment mechanism of this embodiment includes a mandrel 1, a thread 2, an annular magnet 3, and a mold body 4. The outer surface of the cylindrical part of the mandrel 1 is machined with an external thread for engaging with a threaded hole on the mold body 4. An annular magnet 3 is embedded at the front end of the mandrel 1. The mandrel 1 is screwed into the threaded hole of the mold body 4 through the thread 2.

[0015] The front end of the mandrel 1 that mates with the mold body 4 is provided with a tapered sealing surface 5, and the threaded hole entrance of the mold body 4 is provided with a matching tapered hole.

[0016] A sealing ring 6 is fitted on the mandrel 1, and an annular groove for installing the sealing ring 6 is provided on the mandrel 1.

[0017] The end of the spindle 1 has an operating groove 7 for inserting tools such as an Allen wrench to rotate and adjust the spindle 1.

[0018] The front end of the spindle 1 is provided with an annular groove for accommodating the annular magnet 3, and the annular magnet 3 is press-fitted into the annular groove by an interference fit.

[0019] The mandrel 1 is made of non-magnetic material.

[0020] The ring magnet 3 is made of permanent magnet material.

[0021] The working principle of this utility model is as follows: By rotating the mandrel 1 and using the threaded pair 2 for precise height adjustment, the annular magnet 3 at the front end is driven to rise and fall synchronously, thereby accurately positioning the adsorbed metal parts. The annular magnet 3 uses its unique magnetic field distribution to firmly adsorb shaft-like parts. At the same time, the conical sealing surface 5 and the sealing ring 6 form a double sealing barrier, effectively preventing PU material leakage, and realizing the integrated function of reliable fixing, precise positioning and sealing and leak prevention of metal parts in a high-pressure encapsulation environment.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. 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 process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel magnet adjustment mechanism, comprising a mandrel (1), a thread (2), a ring magnet (3), and a mold body (4), characterized in that: The mandrel (1) has a thread (2) on its outer wall and a ring magnet (3) embedded at its front end. The mandrel (1) is screwed into the threaded hole of the mold body (4) through the thread (2). The front end of the mandrel (1) that mates with the mold body (4) has a tapered sealing surface (5). The threaded hole entrance of the mold body (4) has a matching tapered hole. A sealing ring (6) is fitted on the mandrel (1). An annular groove for installing the sealing ring (6) is opened on the mandrel (1).

2. The novel magnet adjustment mechanism according to claim 1, characterized in that: An operating groove (7) is provided at the tail of the mandrel (1) for inserting a tool to rotate and adjust the mandrel (1).

3. The novel magnet adjustment mechanism according to claim 1, characterized in that: The front end of the mandrel (1) is provided with an annular groove for accommodating an annular magnet (3), and the annular magnet (3) is press-fitted into the annular groove by an interference fit.

4. The novel magnet adjustment mechanism according to claim 1, characterized in that: The mandrel (1) is made of non-magnetic material.

5. The novel magnet adjustment mechanism according to claim 1, characterized in that: The ring magnet (3) is made of permanent magnet material.

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