Hot-pressing jig

Abstract

A hot-pressing clamp for pressing a magnet and a wireless coil on a hardware assembly, comprising a lower die, an upper die, a plurality of first pressing heads elastically mounted on the upper die, a second pressing head movably mounted on the upper die, and a third pressing head movably mounted on the lower die, the plurality of first pressing heads being movable in a vertical direction for pressing the magnet on an inner surface of the hardware assembly; the second pressing head being movable in a horizontal direction for pressing the magnet on an inner side wall of the hardware assembly; and the third pressing head being movable in the horizontal direction for embedding the wireless coil on a side wall of the hardware assembly by pressing.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a hot press fixture. Background Technology

[0002] In the fields of consumer electronics, smart home and wireless charging equipment, hardware components with magnets and wireless coils are the core structural components for realizing device positioning, signal transmission and wireless power supply. The quality of their crimping and assembly directly affects the product's functional stability and service life.

[0003] For magnet crimping, inner surface magnets often rely on manual positioning and simple vertical pressure heads, resulting in significant positioning errors and a lack of buffering, which easily leads to magnet breakage. Inner sidewall magnets require specialized lateral pressing fixtures, but the pressure head doesn't fit well against the sidewall, and the lack of buffering means rigid pressure can deform the sidewall of the hardware component, resulting in insufficient magnet bonding strength. Furthermore, both types of magnet crimping require separate equipment, leading to time-consuming process changes. When embedding wireless coils into the sidewall of hardware components, existing fixed pressure heads are planar and cannot adapt to the coil's curved outer circumference, easily scratching the insulation layer. Additionally, the pressure head stroke is not adjustable; over-pressure can damage the coil wires, while under-pressure can loosen the coil, affecting charging efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-station integrated hot press fixture that can press magnets onto the inner surface and inner wall of hardware components and embed wireless coils into the side wall using pressure heads in different directions.

[0005] The objective of this utility model is achieved through the following solution: This utility model provides a hot press clamp for pressing magnets and wireless coils onto a hardware component. It includes a lower mold, an upper mold, several first press heads elastically mounted on the upper mold, a second press head movably mounted on the upper mold, and a third press head movably mounted on the lower mold. The first press heads are movable vertically to press the magnets onto the inner surface of the hardware component; the second press heads are movable horizontally to press the magnets onto the inner sidewall of the hardware component; and the third press head is movable horizontally to embed the wireless coil into the sidewall of the hardware component through pressing.

[0006] Furthermore, a fixing block is installed on the lower surface of the upper mold, and a sliding groove is recessed at the lower end of the fixing block. At least a portion of the first pressure head can slide along the sliding groove. A spring is provided in each sliding groove, and the two ends of the spring abut against the first pressure head and the bottom wall of the sliding groove, respectively.

[0007] Furthermore, the hot press fixture also includes a first drive assembly fixedly mounted on the upper mold, and the second pressure head is mounted on the movable end of the first drive assembly.

[0008] Furthermore, the hot press fixture also includes a second drive assembly fixedly installed on the lower mold, and the third pressure head is installed on the movable end of the second drive assembly.

[0009] Furthermore, the first pressure head, the second pressure head, and the third pressure head are all connected to the heating unit to transfer heat to the magnet and the wireless coil during operation.

[0010] Furthermore, several limiting blocks are installed on the lower surface of the upper mold. These limiting blocks are used to limit the downward movement of the upper mold to prevent excessive movement from damaging the magnet.

[0011] Furthermore, the upper surface of the lower mold is provided with positioning blocks for positioning hardware components.

[0012] Furthermore, the pressing end of the third pressure head is provided with an arc-shaped contact surface, the curvature of which is consistent with the curvature of the outer periphery of the wireless charging coil and the outer periphery of the hardware components.

[0013] Furthermore, the lower mold is provided with several suction holes, and the hot press fixture uses these suction holes to attach the hardware components to the lower mold.

[0014] Furthermore, the lower surface of the upper mold is provided with several guide posts, and the lower mold is provided with several guide holes corresponding to the guide posts. When the upper mold moves relative to the lower mold, the guide posts slide within the guide holes to control the direction of movement.

[0015] The advantages of this invention lie in integrating the inner surface magnet pressing, inner side wall magnet pressing, and side wall wireless coil embedding pressing of the hardware component into a single fixture. This eliminates the need for multi-device, step-by-step operations, reduces the number of workpiece transfers, and significantly improves assembly efficiency. Different pressing head structures and movement directions are designed for the different pressing requirements of magnets and wireless coils, avoiding pressing deviations or component damage caused by traditional universal pressing heads, effectively improving product yield and adapting to mass production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the hot pressing fixture of this utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the upper mold of the hot press fixture of this utility model.

[0019] Figure 3 for Figure 1 A schematic diagram of the lower mold of the hot press fixture of this utility model.

[0020] Figure 4 for Figure 3 An exploded view of the back of the lower mold of the hot press fixture of this utility model.

[0021] Figure 5 for Figure 1 A schematic diagram of the fixing block of the hot press clamp of this utility model.

[0022] Figure 6 for Figure 5 A schematic diagram of the fixing block loading spring of the hot press clamp of this utility model.

[0023] Figure 7 This is a schematic diagram of the third pressure head of the hot press fixture of this utility model. Detailed Implementation

[0024] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0025] The terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are used only for the convenience of description and simplification, 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. Therefore, they should not be construed as limiting the invention.

[0026] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0027] Please see Figures 1 to 6This utility model provides a hot-pressing fixture for pressing magnets and wireless coils onto a hardware component. It includes an upper mold 10, a lower mold 20, several first pressing heads 11 elastically mounted on the upper mold 10, second pressing heads 12 movably mounted on the upper mold 10, and a third pressing head 21 movably mounted on the lower mold 20. The first pressing heads 11 are movable vertically to press the magnets onto the inner surface of the hardware component. The second pressing heads 12 are movable horizontally to press the magnets onto the inner sidewall of the hardware component. The third pressing head 21 is movable horizontally to embed the wireless coil into the sidewall of the hardware component through pressing.

[0028] Please see Figure 2 , Figure 5 and Figure 6 A fixing block 13 is mounted on the lower surface of the upper mold 10. A sliding groove 131 is recessed at the lower end of the fixing block 13. At least a portion of the first pressing head 11 can slide along the sliding groove 131. A spring 132 is provided within each sliding groove 131, with both ends of the spring 132 abutting against the first pressing head 11 and the bottom wall of the sliding groove 131, respectively. As the upper mold 10 moves downward, the lower end face of the first pressing head 11 first contacts the magnet on the inner surface of the hardware component. As the upper mold 10 continues to move downward, the first pressing head 11, subjected to the reaction force of the magnet, slides upward along the sliding groove 131 of the fixing block 13, simultaneously compressing the spring 132. The spring 132 generates an elastic reaction force during compression, which is transmitted to the magnet through the first pressing head 11, tightly pressing the magnet against the inner surface of the hardware component. At this time, the elastic buffering effect of the spring 132 can prevent the magnet from breaking or the hardware components from deforming due to excessive pressure, while the sliding groove 131 limits the horizontal displacement of the first pressure head 11 to ensure accurate pressing position. When the upper mold 10 descends to the preset mold closing position, the inner surface magnet pressing is completed, and the upper mold 10 stops moving down.

[0029] Several limiting blocks 14 are also installed on the lower surface of the upper mold 10. These limiting blocks 14 are used to limit the downward movement of the upper mold 10 to prevent excessive movement from damaging the magnet. When the upper mold 10 moves down to the top of the limiting block 14, the limiting block 14 forms a rigid support with its high-strength material, preventing the upper mold 10 from moving further down.

[0030] The lower surface of the upper mold 10 is provided with several guide posts 15, and the lower mold 20 has several guide holes 24 corresponding to the guide posts 15. When the upper mold 10 moves relative to the lower mold 20, the guide posts 15 slide within the guide holes 24 to control the direction of movement. During the downward movement of the upper mold 10, the guide posts 15 slide synchronously within the guide holes 24. Because the guide holes 24 strictly restrict the direction of movement of the guide posts 15, the upper mold 10 can only move downward along the vertical direction specified by the guide holes 24, and there will be no horizontal deviation.

[0031] The hot press fixture also includes a first drive assembly 30 fixedly mounted on the upper mold 10, and a second pressure head 12 mounted on the movable end of the first drive assembly 30. After the upper mold 10 is closed, the first drive assembly 30 is activated, and the movable end of the first drive assembly 30 extends horizontally, driving the second pressure head 12 to move towards the magnet on the inner wall of the hardware component. When the pressing end of the second pressure head 12 contacts the magnet, the first drive assembly 30 continues to output pressure, pressing the magnet tightly against the inner wall of the hardware component until the magnet is completely adhered to the side wall, and the inner wall magnet pressing is completed.

[0032] Please see Figure 4 The hot press fixture further includes a second drive assembly 40 fixedly mounted on the lower mold 20, and a third pressing head 21 mounted on the movable end of the second drive assembly 40. The movable end of the second drive assembly 40 extends horizontally, driving the third pressing head 21 to move towards the wireless coil on the side wall of the hardware component. The shape of the pressing end of the third pressing head 21 is adapted to the shape of the wireless coil and the side wall of the hardware component, ensuring that the wireless coil will not be deformed or damaged during the pressing process, while ensuring a tight connection with the side wall of the hardware component.

[0033] The first pressure head 11, the second pressure head 12, and the third pressure head 21 are all connected to a heating unit to transfer heat to the magnet and the wireless coil during operation. When the pressure head assembly starts working, the heating unit activates, transferring heat to the connected first pressure head 11, second pressure head 12, and third pressure head 21 via conduction. As the pressure head temperature rises, heat is transferred from the pressure head to the magnet and the wireless coil during contact. For the magnet material, appropriate heating can reduce its hardness and brittleness, making it easier to undergo plastic deformation under pressure, thus better bonding with the wireless coil. Simultaneously, heating can eliminate residual stress inside the magnet, improving the stability of its magnetic properties. For the wireless coil, heating softens the insulating material on the coil surface, enhancing the adhesion between the coil and the magnet, reducing static electricity and electromagnetic interference caused by friction between materials, and improving the efficiency and stability of wireless transmission. During the application of pressure, the three pressure heads cooperate, applying uniform pressure to the magnet and the wireless coil from different directions and positions, ensuring that they can be tightly and accurately assembled together under heating conditions, forming a high-quality product.

[0034] Please see Figure 7 The third pressing head 21 has an arc-shaped contact surface 211 at its pressing end. The arc of the arc-shaped contact surface 211 matches the arc of the outer periphery of the wireless charging coil and the outer periphery of the hardware component. When the third pressing head 21 contacts the wireless coil, the arc-shaped contact surface 211 can fit snugly against the outer periphery of the wireless coil, while also adapting well to the arc of the side wall of the hardware component. In this way, during the pressing process, the pressure can be evenly distributed across the entire outer periphery of the wireless coil, avoiding problems such as deformation and localized damage to the wireless coil caused by uneven pressure. As the third pressing head 21 continues to move, it accurately embeds the wireless coil into the side wall of the hardware component, and by precisely controlling the movement distance and pressure of the third pressing head 21, it ensures that the embedding depth and position of the wireless coil meet the design requirements.

[0035] Please see Figure 3 The upper surface of the lower mold 20 is provided with positioning blocks 22 for positioning the hardware components. Before the pressing operation, the hardware components are placed on the lower mold 20. At this time, the positioning blocks 22 on the upper surface of the lower mold 20 come into play. Since the shape and size of the positioning blocks 22 are designed according to the specific parts of the hardware components, the hardware components can fit tightly against the edges of the positioning blocks 22. The hardware components are then firmly fixed in the designated position of the lower mold 20 and will not move or deflect during the subsequent pressing process, providing a basic guarantee for accurate pressing.

[0036] Please see Figure 4The lower mold 20 is perforated with several suction holes 23, through which the hot press fixture adsorbs the metal components onto the lower mold 20. Before the pressing operation, the lower mold 20 of the hot press fixture is connected to an external vacuum generator. When the vacuum generator is turned on, a negative pressure environment is formed in the chamber inside the lower mold 20 that is connected to the suction holes 23. At this time, the metal components are placed on the lower mold 20. Due to the negative pressure on the surface of the lower mold 20, the external atmospheric pressure will press the metal components tightly onto the lower mold 20, achieving stable adsorption and fixation of the metal components. The several suction holes 23 are evenly distributed on the surface of the lower mold 20, which allows the adsorption force to act evenly on all parts of the metal components, avoiding tilting or displacement of the metal components during the pressing process due to insufficient local adsorption force. Moreover, this adsorption and fixation method is not limited by the shape and surface smoothness of the metal components, and can reliably fix metal components with various complex shapes and smooth surfaces.

[0037] This utility model provides a hot press fixture that integrates the pressing of magnets onto the inner surface of hardware components, the pressing of magnets onto the inner sidewalls, and the pressing of wireless coils embedded in the sidewalls into a single fixture. This eliminates the need for multi-device, step-by-step operations, reduces the number of workpiece transfers, and significantly improves assembly efficiency. Different pressing head structures and movement directions are designed for the different pressing requirements of magnets and wireless coils, avoiding pressing deviations or component damage caused by traditional universal pressing heads, effectively improving product yield and adapting to mass production.

Claims

1. A thermoforming clamp for pressing a magnet and a wireless coil onto a hardware component, characterized in that, The device includes a lower mold, an upper mold, several first pressure heads elastically mounted on the upper mold, a second pressure head movably mounted on the upper mold, and a third pressure head movably mounted on the lower mold. The several first pressure heads can move vertically to press magnets onto the inner surface of the hardware component; the second pressure heads can move horizontally to press magnets onto the inner sidewall of the hardware component; and the third pressure head can move horizontally to embed a wireless coil into the sidewall of the hardware component by pressing.

2. The hot pressing fixture according to claim 1, characterized in that, A fixing block is installed on the lower surface of the upper mold, and a sliding groove is recessed at the lower end of the fixing block. At least a portion of the first pressure head can slide along the sliding groove. A spring is provided in each sliding groove, and the two ends of the spring abut against the first pressure head and the bottom wall of the sliding groove, respectively.

3. The hot pressing fixture according to claim 1, characterized in that, The hot press fixture also includes a first drive assembly fixedly installed on the upper mold, and the second pressure head is installed on the movable end of the first drive assembly.

4. The hot pressing fixture according to claim 1, characterized in that, The hot press fixture also includes a second drive assembly fixedly installed on the lower mold, and the third pressure head is installed on the movable end of the second drive assembly.

5. The hot pressing fixture according to claim 1, characterized in that, The first pressure head, the second pressure head, and the third pressure head are all connected to the heating unit to transfer heat to the magnet and the wireless coil during operation.

6. The hot pressing fixture according to claim 1, characterized in that, Several limiting blocks are also installed on the lower surface of the upper mold. These limiting blocks are used to limit the downward movement of the upper mold to prevent excessive movement from damaging the magnet.

7. The hot pressing fixture according to claim 1, characterized in that, The upper surface of the lower mold is provided with positioning blocks for positioning hardware components.

8. The hot pressing fixture according to claim 1, characterized in that, The pressing end of the third pressure head is provided with an arc-shaped contact surface, and the curvature of the arc-shaped contact surface is consistent with the curvature of the outer periphery of the wireless charging coil and the outer periphery of the hardware components.

9. The hot pressing fixture according to claim 1, characterized in that, The lower mold is provided with several suction holes, and the hot press fixture uses these suction holes to attach the hardware components to the lower mold.

10. The hot pressing fixture according to claim 1, characterized in that, The lower surface of the upper mold is provided with several guide posts, and the lower mold is provided with several guide holes corresponding to the guide posts. When the upper mold moves relative to the lower mold, the guide posts slide within the guide holes to control the direction of movement.

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