Coil filling and sealing tool and coil filling and sealing method

Abstract

The invention provides a coil potting tool and a coil potting method. The coil potting tool comprises an upper cover, an isolation block and a lower cover which are sequentially stacked from top to bottom, a first coil assembly clamping area is formed between the upper cover and the isolation block, a coil assembly needing to be encapsulated is clamped in the first coil assembly clamping area, and / or a second coil assembly clamping area is formed between the lower cover and the isolation block, and a coil assembly needing to be encapsulated is clamped in the second coil assembly clamping area; the upper cover and the lower cover each comprise a body and a movable block, and the movable blocks move up and down in the corresponding bodies in the stacking direction, so that the coil assemblies with different thicknesses are fixed. According to the coil potting tool, the coil clamping areas are formed between the upper cover and the isolation block and between the lower cover and the isolation block respectively, and two coil assemblies can be placed at the same time for potting; meanwhile, the upper cover and the lower cover are adjusted to be tightly attached to the coil assembly through the movable block, accurate clamping of the coil assembly is achieved, and the glue solution leakage phenomenon is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of silicone rubber potting, and in particular relates to a coil potting tool and a coil potting method. Background Art

[0002] With the development of electronic technology and related assembly technology, the reliability requirements of electronic products are increasing. Nowadays, coils are often installed in electronic products. Long-term exposure of coils to the air can easily lead to coil aging and oxidation, which poses a safety hazard and shortens the service life of the coils. Therefore, the coils need to be potted to isolate the air to achieve the purpose of waterproofing, dustproofing, oil-proofing, moisture and heat resistance, oxidation resistance, and aging resistance, reduce the impact of vibration, prevent external force damage, stabilize the electrical parameters of the coil, and improve product reliability. During the potting process, glue leakage occurs, the potting efficiency is very low, and due to the instability of the operator's skills, the quality of the potted products is inconsistent.

[0003] As the number of coils used increases, in order to improve production efficiency and product quality, it is necessary to design and use tooling for coil potting. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] According to one aspect, the present invention provides a coil potting tool, which includes an upper cover, an isolation block and a lower cover stacked in sequence; a first coil component clamping area is formed between the upper cover and the isolation block, and a coil component to be potted is clamped in the first coil component clamping area, and / or a second coil component clamping area is formed between the lower cover and the isolation block, and a coil component to be potted is clamped in the second coil component clamping area; the upper cover and the lower cover both include a main body and a movable block, and the movable block moves up and down in the corresponding main body along the stacking direction to fix coil components of different thicknesses.

[0006] Furthermore, the movable block has an up-and-down movement range of 0-8 mm in the corresponding main body along the stacking direction.

[0007] Furthermore, the surfaces of the isolation block facing the upper cover and the lower cover are provided with wire grooves for positioning and routing the coil assembly.

[0008] Furthermore, the wire slots of the isolation block include coil tooling slots and coil wire slots. The coil tooling slots are used for positioning the coil assembly, and the coil wire slots are used for routing the coil assembly.

[0009] Furthermore, the bodies of the upper cover and the lower cover are provided with glue dispensing windows, and during potting, the glue liquid drips into the first coil assembly clamping area and the second coil assembly clamping area through the glue dispensing windows.

[0010] According to another aspect of the present invention, a coil potting method is provided, the coil potting method comprising:

[0011] Step 1: Select the material of the potting tooling according to the potting process;

[0012] Step 2: Based on the determined potting tooling material, according to the shape of the coil assembly and the sealing requirements of the potting process, design the coil potting tooling structure as described in any one of the above items;

[0013] Step 3: Design the range of motion of the movable block according to the thickness of the coil assembly to fix the coil assemblies of different thicknesses;

[0014] Step 4: fix the coil assembly between the upper cover and the isolation block, and between the lower cover and the isolation block, and adjust the position of the movable block to achieve the positioning and fixation of coil assemblies of different thicknesses;

[0015] Step five: potting the coil through the glue dispensing window.

[0016] By applying the technical solution of the present invention, a coil potting tool and a coil potting method are provided. The coil potting tool forms coil clamping areas between the upper cover and the isolation block, and between the lower cover and the isolation block, respectively, and two coil assemblies can be placed at the same time for potting; at the same time, the upper and lower covers are adjusted to fit tightly with the coil assembly through the movable block, thereby achieving precise clamping of the coil assembly and avoiding leakage of glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It shows a schematic structural diagram of a coil potting tool provided according to a specific embodiment of the present invention;

[0019] Figure 2 A schematic side view of a coil potting tool provided according to a specific embodiment of the present invention is shown;

[0020] Figure 3 A schematic diagram of a glue dispensing window for a coil potting tool provided according to a specific embodiment of the present invention is shown;

[0021] Figure 4A schematic diagram of the structure of the upper cover / lower cover provided according to a specific embodiment of the present invention is shown; wherein a represents a first coil assembly clamping area formed between the upper cover and the isolation block; b represents a second coil assembly clamping area formed between the lower cover and the isolation block;

[0022] Figure 5 A schematic structural diagram of an isolation block provided according to a specific embodiment of the present invention is shown;

[0023] Figure 6 A schematic structural diagram of a coil assembly is shown.

[0024] Description of the accompanying symbols:

[0025] 10. Upper cover; 11. Movable block; 12. Main body; 20. Isolation block; 21. Coil tooling slot; 22. Coil wire slot; 30. Lower cover; a. First coil assembly clamping area; b. Second coil assembly clamping area. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] like Figures 1 to 5 As shown, according to a specific embodiment of the present invention, a coil potting tool is provided, which includes an upper cover 10, an isolation block 20 and a lower cover 30 stacked in sequence; a first coil component clamping area a is formed between the upper cover 10 and the isolation block 20, and a coil component to be potted is clamped in the first coil component clamping area a, and / or a second coil component clamping area b is formed between the lower cover 30 and the isolation block 20, and a coil component to be potted is clamped in the second coil component clamping area b; the upper cover 10 and the lower cover 30 both include a main body 12 and a movable block 11, and the movable block 11 moves up and down in the corresponding main body 12 along the stacking direction to fix coil components of different thicknesses.

[0030] By applying this configuration, a coil potting tool is provided, which forms coil positioning areas between the upper cover 10 and the isolation block 20, and between the lower cover 30 and the isolation block 20, respectively, and can place two coil assemblies for potting at the same time; at the same time, the upper and lower covers are adjusted to fit tightly with the coil assembly through the movable block 11, thereby achieving precise positioning of the coil assembly and avoiding leakage of glue.

[0031] like Figure 4 As shown, in the present invention, a coil tooling groove is formed at the position of the movable block 11 in the body 12 on the upper cover 10 and the lower cover 30. As a specific embodiment of the present invention, the movable block 11 can be set to move up and down in the corresponding body 12 along the stacking direction in a range of 0-8 mm in combination with the size of the actual coil assembly, that is, the depth of the coil tooling groove of the upper cover 10 and the lower cover 30 is controlled to be 0-8 mm.

[0032] Based on this, according to the coil assembly of each potting operation, the movable block 11 is pressed to different depths to achieve a good fit between the upper and lower covers and the coil assembly each time, making the operation simple and improving the production efficiency during use compared with the original technology.

[0033] Furthermore, if Figure 2 and Figure 5 As shown, the surfaces of the isolation block 20 facing the upper cover 10 and the lower cover 30 are provided with wire grooves for positioning and routing the coil assembly. By providing the wire grooves, the two wires in the coil assembly can be prevented from being damaged during the potting process, and the consistency of the wire direction after the potting coil is improved.

[0034] As a specific embodiment of the present invention, the wire grooves of the isolation block 20 may include a coil tooling groove 21 and a coil wire groove 22. The coil tooling groove 21 is used for positioning the coil assembly, and the coil wire groove 22 is used for routing the coil assembly.

[0035] Preferably, the wire groove of the isolation block 20 includes a coil tooling groove 21 with a groove depth of 1 mm and a coil wire groove 22 with a groove depth of 2 mm, which can enhance the effect of coil clamping and fixing. The design of the 2 mm coil wire groove 22 allows the wire to be straightened along the direction of the groove during potting, which not only makes the wire less likely to be damaged, but also improves the consistency after potting, thereby improving product quality.

[0036] Furthermore, if Figure 3 As shown, the bodies 12 of the upper cover 10 and the lower cover 30 are provided with glue dispensing windows, and during potting, the glue is dripped into the first coil assembly clamping area a and the second coil assembly clamping area b through the glue dispensing windows.

[0037] As a specific embodiment of the present invention, GD414 glue can be further applied to the outer side of the tooling to achieve a sealing effect and avoid glue leakage during the potting process.

[0038] Furthermore, for the material selection of coil potting tooling, first of all, it is necessary to confirm the heat resistance, aging resistance and deformation after high temperature of the tooling material according to the preheating temperature and colloid curing temperature requirements in the potting process; secondly, considering the production cost, you can select tooling materials that meet the requirements of cleanability, reusability, and durability (quality); according to the contact characteristics between the tooling and the coil assembly, confirm the selection of materials with strong hardness and no deformation to achieve the effect of fixing the coil and preventing it from shaking; in addition, electronic products should consider anti-static requirements and use anti-static materials for tooling production to improve product reliability. In summary, the material performance of coil potting tooling must meet the following requirements: high temperature resistance, aging resistance, no deformation, anti-static, strong cleanability, and high reusability.

[0039] Compared with the prior art, the coil potting tool of the present invention has the following advantages:

[0040] (1) The present invention designs a tooling structure based on the coil assembly, thereby achieving precise positioning of the coil assembly and improving the consistency of the potted coil; the structure meets the sealing requirements, and the glue leakage problem is solved compared with the prior art.

[0041] (2) The present invention has a reliable and reasonable design, is easy to operate, improves production efficiency, meets coil potting requirements, and improves product quality.

[0042] According to another aspect of the present invention, a coil potting method is provided, the method comprising:

[0043] Step 1: According to the potting process (generally including: preparation, protection, preheating, glue preparation, potting, curing, sorting, inspection and warehousing, etc.), select the material of the potting tooling, mainly considering the cleanability, heat resistance, reusability and durability (quality) during the use of the tooling.

[0044] Step 2: Based on the determined potting tooling material, according to the coil component shape (such as Figure 6 As shown in the figure, as well as the sealing requirements of the potting process, the coil potting tooling as described above is used to design the structure of the potting tooling. The designed tooling structure must meet the sealing requirements to achieve the effect of precise positioning of the coil assembly.

[0045] Step three, designing the movable range of the movable block 11 according to the thickness of the coil assembly, so as to fix the coil assemblies with different thicknesses.

[0046] Step 4: fix the coil assembly between the upper cover 10 and the isolation block 20, and between the lower cover 30 and the isolation block 20, and adjust the position of the movable block 11 to achieve the positioning and fixation of coil assemblies of different thicknesses.

[0047] Step five: potting the coil through the glue dispensing window.

[0048] The coil potting method of the present invention uses a designed coil potting tool for potting, thereby achieving the effect of improving the potting efficiency and enhancing the consistency of the potted coil quality.

[0049] In the present invention, the wires of the coil assembly can be arranged in the coil wire groove 22 of the isolation block 20. During potting, the wires can be straightened along the wire groove direction, which not only makes the wires less likely to be damaged, but also improves the consistency after potting, thereby improving product quality.

[0050] In summary, the present invention provides a coil potting tool and a coil potting method, which can accurately position the coil assembly and improve the consistency of the potted coil; the structure meets the sealing requirements, and the glue leakage problem is solved compared with the prior art. The coil potting tool of the present invention is reliable and reasonable in design, easy to operate, effectively improves production efficiency, meets the coil potting requirements, and improves product quality.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coil potting tool, characterized in that: The coil potting tool comprises an upper cover (10), an isolation block (20) and a lower cover (30) which are stacked up and down in sequence; a first coil component clamping area (a) is formed between the upper cover (10) and the isolation block (20), and a coil component to be potted is clamped in the first coil component clamping area (a); and / or a second coil component clamping area (b) is formed between the lower cover (30) and the isolation block (20), and a coil component to be potted is clamped in the second coil component clamping area (b); the upper cover (10) and the lower cover (30) both comprise a body (12) and a movable block (11), and the movable block (11) moves up and down in the corresponding body (12) along the stacking direction to achieve the fixation of coil components of different thicknesses.

2. The coil potting tool according to claim 1, characterized in that: The movable block (11) has a vertical movement range of 0-8 mm in the corresponding main body (12) along the stacking direction.

3. The coil potting tool according to claim 1, characterized in that: Surfaces of the isolation block (20) facing the upper cover (10) and the lower cover (30) are provided with wire grooves for positioning and routing the coil assembly.

4. The coil potting tool according to claim 3, characterized in that: The wire slot of the isolation block (20) comprises a coil tooling slot (21) and a coil wire slot (22), wherein the coil tooling slot (21) is used for positioning the coil assembly, and the coil wire slot (22) is used for routing the coil assembly.

5. The coil potting tool according to claim 4, characterized in that: The bodies (12) of the upper cover (10) and the lower cover (30) are both provided with glue dispensing windows, and during potting, glue liquid is dripped into the first coil assembly clamping area (a) and the second coil assembly clamping area (b) through the glue dispensing windows.

6. A coil potting method, characterized in that: The coil potting method comprises: Step 1: Select the material of the potting tooling according to the potting process; Step 2: Based on the determined potting tooling material, according to the shape of the coil assembly and the sealing requirements of the potting process, design a coil potting tooling structure as described in any one of claims 1 to 5; Step 3, designing the range of motion of the movable block (11) according to the thickness of the coil assembly, so as to fix the coil assemblies of different thicknesses; Step 4: fix the coil assembly between the upper cover (10) and the isolation block (20), and between the lower cover (30) and the isolation block (20), and adjust the position of the movable block (11) to achieve the positioning and fixation of coil assemblies of different thicknesses; Step five: potting the coil through the glue dispensing window.

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