Motor filling and sealing device

Abstract

The utility model belongs to the technical field of motor production, and discloses a motor potting device, which comprises a box body assembly, the box body assembly comprises a plurality of mutually connected cover plates, the plurality of cover plates are enclosed to form a glue injection cavity, the box body assembly is provided with at least one first glue injection hole communicated with the glue injection cavity, and the glue injection cavity is used for accommodating a motor coil. A first sealing groove is formed in at least one end face, abutting against the adjacent cover plate, of at least one cover plate, the first sealing groove extends in the length or height or width direction of the glue injection cavity, and the first sealing groove is filled with a flexible first sealing strip to block a gap between the two adjacent cover plates. The motor filling and sealing device can reduce the glue overflow condition of the box body assembly between the adjacent cover plates, improves the packaging quality, and reduces the pollution to the surrounding production environment.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a motor potting device. Background Technology

[0002] The motor manufacturing process includes a coil encapsulation step. The encapsulating adhesive improves the coil's insulation performance, offering advantages such as protecting the coil, preventing damage and deformation, and increasing mechanical strength. To ensure consistency and efficiency in the encapsulation process, the industry typically uses encapsulation molds. These molds consist of multiple templates assembled to form a cavity. The coil is placed inside the cavity, and adhesive is injected to encapsulate it. After curing, the encapsulating adhesive forms. The mold templates are usually made of metal plates. Due to limitations in processing and assembly precision, the assembly surfaces of adjacent templates are difficult to fit perfectly, easily creating gaps. This can cause adhesive leakage from the cavity during encapsulation, affecting the motor's appearance and performance, polluting the production environment, and increasing processing costs. Utility Model Content

[0003] The purpose of this invention is to provide a motor potting device that can solve the problems of glue leakage caused by gaps between adjacent mold plates in existing glue injection molds, which affects the appearance and performance of the motor and pollutes the production environment.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A motor potting device is provided for potting and encapsulating a motor coil with adhesive. The motor potting device includes a housing assembly, which includes multiple interconnected cover plates. The multiple cover plates surround a potting cavity. The housing assembly has at least one first potting hole communicating with the potting cavity. The potting cavity is used to accommodate the motor coil. At least one cover plate has a first sealing groove on at least one end face of an adjacent cover plate. The first sealing groove extends along the length, height, or width of the potting cavity. The first sealing groove is filled with a flexible first sealing strip to seal the gap between two adjacent cover plates.

[0006] In one embodiment, the plurality of cover plates include a top cover plate and a bottom cover plate disposed opposite to each other, and a front cover plate, a rear cover plate, and two side panels connected between the top cover plate and the bottom cover plate. The top cover plate, the bottom cover plate, the front cover plate, the rear cover plate, and the two side panels enclose a rectangular injection cavity. An injection boss is provided on the inner side of each of the two side panels. The injection boss extends toward the injection cavity and is configured to fill the irregular space of the motor coil. A second sealing groove is provided on the injection boss and / or the side panel. A flexible second sealing strip is filled in the second sealing groove to seal the gap between the injection boss and the side panel.

[0007] In one embodiment, the second sealing groove extends circumferentially around the injection boss and forms an annular groove.

[0008] In one embodiment, the front cover plate and the rear cover plate are disposed opposite to each other. The inner end face of the front cover plate is simultaneously attached to one end of the top cover plate, the bottom cover plate, and the two side panels. The inner end face of the rear cover plate is simultaneously attached to the other end of the top cover plate, the bottom cover plate, and the two side panels. The front cover plate is provided with four first sealing grooves to correspond to the front end faces of the top cover plate, the bottom cover plate, and the two side panels, respectively. The rear cover plate is provided with four first sealing grooves to correspond to the rear end faces of the top cover plate, the bottom cover plate, and the two side panels, respectively.

[0009] In one embodiment, the top cover plate covers the upper side of the two side panels, and the bottom cover plate covers the lower side of the two side panels. The top cover plate has two first sealing grooves corresponding to the upper end faces of the two side panels respectively, and the bottom cover plate has two first sealing grooves corresponding to the lower end faces of the two side panels respectively.

[0010] In one embodiment, the top cover plate has a through observation hole that communicates with the glue injection cavity.

[0011] In one embodiment, the cable end of the motor coil can pass through the observation hole to extend to the outside of the housing assembly, the housing assembly further including a fixing block that is detachably disposed in the observation hole and blocks part of the observation hole to restrain the cable.

[0012] In one embodiment, the housing assembly is further provided with an auxiliary injection hole, at least one of the first injection holes being provided at the bottom of the front cover and / or the rear cover, and the auxiliary injection hole being provided at the top cover.

[0013] In one embodiment, the side panel is detachably connected to the glue injection boss, and the housing assembly has multiple ejector holes. An ejector passes through the ejector holes to push the glue injection boss and / or the motor coil, so that the glue injection boss and the motor coil are disengaged from the glue injection cavity.

[0014] In one embodiment, the inner wall of the injection cavity is sandblasted; and / or,

[0015] The inner wall of the injection cavity is coated with a release layer; and / or,

[0016] The motor potting device further includes a calibration plate, which is configured to be attached to the surface of the motor coil so that the motor coil is centered in the injection cavity. The calibration plate is formed by curing the potting adhesive.

[0017] The beneficial effects of this utility model are:

[0018] The motor potting device provided by this utility model includes a housing assembly comprising multiple interconnected cover plates forming a glue injection cavity. The housing assembly has at least one first glue injection hole communicating with the glue injection cavity. The glue injection cavity is used to house the motor coil, and glue is injected into the cavity through the first glue injection hole from an external glue injection tool. At least one cover plate has a first sealing groove on at least one end face of an adjacent cover plate. The first sealing groove extends along the length, height, or width of the glue injection cavity, and is filled with a flexible first sealing strip to seal the gap between two adjacent cover plates. Because the first sealing strip is flexible, it can effectively seal the gap between two adjacent cover plates, reducing the risk of glue leakage from the glue injection cavity through the gap between adjacent cover plates, and avoiding the limitation of the encapsulation quality of the motor potting device on processing and assembly precision. The first sealing groove guides and limits the flexible first sealing strip, causing it to extend circumferentially along the glue injection cavity, preventing it from moving due to glue injection pressure. The first sealing strip always maintains a good sealing effect, while reducing pollution to the surrounding production environment and lowering processing costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the motor potting device provided in this embodiment of the utility model;

[0020] Figure 2 This is a structural disassembly diagram of the motor potting device provided in this embodiment of the utility model;

[0021] Figure 3 This is a front structural view of the motor potting device provided in this embodiment of the utility model;

[0022] Figure 4 yes Figure 3 Cross-sectional view of the structure along the AA direction;

[0023] Figure 5 yes Figure 3 A cross-sectional view of the structure along the BB direction.

[0024] In the picture:

[0025] 1. Housing assembly; 11. Glue injection chamber; 121. First glue injection hole; 122. Auxiliary glue injection hole; 131. First sealing groove; 132. Second sealing groove; 141. Top cover plate; 142. Bottom cover plate; 143. Front cover plate; 144. Rear cover plate; 145. Side panel; 146. Glue injection boss; 15. Observation hole; 16. Fixing block; 17. Handle; 18. Ejection hole; 19. Glue injection nozzle. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

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

[0029] The embodiments of this utility model 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 utility model, and should not be construed as limiting this utility model.

[0030] like Figures 1 to 5 As shown, this embodiment provides a motor potting device for encapsulating motor coils with adhesive. The device includes a housing assembly 1, which comprises multiple interconnected cover plates forming a potting cavity 11. The housing assembly 1 has at least one first potting hole 121 communicating with the potting cavity 11. The potting cavity 11 accommodates the motor coil, and adhesive is injected into it from an external potting tool through the first potting hole 121. At least one cover plate has a first sealing groove 131 abutting at least one end face of an adjacent cover plate. The first sealing groove 131 extends along the length, height, or width of the potting cavity 11, and is filled with a flexible first sealing strip to seal the gap between adjacent cover plates. Because the first sealing strip is flexible, it effectively seals the gap between adjacent cover plates, reducing the risk of adhesive leaking out of the potting cavity 11 through the gap between adjacent cover plates, and preventing the encapsulation quality of the motor potting device from being limited by processing and assembly precision. The first sealing groove 131 guides and limits the flexible first sealing strip, causing it to extend circumferentially along the injection cavity 11, preventing it from moving due to the pressure of the injection. The first sealing strip always has a good sealing effect, while preventing overflow of adhesive from polluting the surrounding production environment and reducing processing costs.

[0031] The material of the first sealing strip can be set with reference to existing technology, which is not the focus of this application, and this embodiment does not impose any limitations. Adjacent cover plates are fastened together with bolts for easy assembly and disassembly.

[0032] The system includes multiple cover plates, including a top cover plate 141 and a bottom cover plate 142 arranged opposite to each other, and a front cover plate 143, a rear cover plate 144, and two side panels 145 connected between the top cover plate 141 and the bottom cover plate 142. The top cover plate 141, bottom cover plate 142, front cover plate 143, rear cover plate 144, and two side panels 145 form a rectangular injection cavity 11 to meet the overall appearance requirements of the motor coil. Injection bosses 146 are respectively provided on the inner sides of the two side panels 145. The injection bosses 146 extend into the injection cavity 11 and are designed to fill the irregularly shaped space of the motor coil to adapt to the shape of the motor coil, improve the uniformity of the adhesive thickness on the surface of the motor coil, and improve the encapsulation accuracy.

[0033] A second sealing groove 132 is provided on the injection boss 146 and / or the side panel 145. The second sealing groove 132 is filled with a flexible second sealing strip to seal the gap between the injection boss 146 and the side panel 145. For example, Figure 2 As shown, in one embodiment, a second sealing groove 132 is provided on the side panel 145. The second sealing groove 132 extends circumferentially around the glue injection boss 146 and forms an annular groove. The second sealing strip in the second sealing groove 132 seals the gap between the glue injection boss 146 and the side panel 145 to prevent glue from leaking between the glue injection boss 146 and the side panel 145.

[0034] In one embodiment, the front cover plate 143 and the rear cover plate 144 are disposed opposite to each other. The inner end face of the front cover plate 143 is simultaneously attached to one end of the top cover plate 141, the bottom cover plate 142 and the two side panels 145. The inner end face of the rear cover plate 144 is simultaneously attached to the other end of the top cover plate 141, the bottom cover plate 142 and the two side panels 145. The front cover plate 143 is provided with four first sealing grooves 131 respectively corresponding to the front end faces of the top cover plate 141, the bottom cover plate 142 and the two side panels 145. The rear cover plate 144 is provided with four first sealing grooves 131 respectively corresponding to the rear end faces of the top cover plate 141, the bottom cover plate 142 and the two side panels 145. In this way, the gaps between the front cover plate 143 and the top cover plate 141, bottom cover plate 142 and two side panels 145 that abut against it, as well as the gaps between the rear cover plate 144 and the top cover plate 141, bottom cover plate 142 and two side panels 145 that abut against it, are all effectively sealed.

[0035] A top cover plate 141 is disposed on the upper side of the two side panels 145, and a bottom cover plate 142 is disposed on the lower side of the two side panels 145. The top cover plate 141 has two first sealing grooves 131 corresponding to the upper end faces of the two side panels 145, and the bottom cover plate 142 has two first sealing grooves 131 corresponding to the lower end faces of the two side panels 145. In this way, the gaps between the top cover plate 141 and the two side panels 145 it abuts against, and the gaps between the bottom cover plate 142 and the two side panels 145 it abuts against, are all effectively sealed.

[0036] Handles 17 are provided on the front cover plate 143 and the rear cover plate 144 respectively, so that users can hold the handles 17 from both sides to move the motor potting device. This embodiment does not limit the specific structure of the handles 17.

[0037] A through observation hole 15 is provided on the top cover plate 141, which connects to the glue injection cavity 11, allowing the operator to observe the glue injection process from above. The end of the motor coil cable can pass through the observation hole 15 to extend to the outside of the housing assembly 1, facilitating the connection of the motor coil to other structural components during subsequent processing. The observation hole 15 is a U-shaped hole formed at the edge of the top cover plate 141, which facilitates processing and prevents cable abrasion.

[0038] The housing assembly 1 also includes a fixing block 16, which is detachably mounted within the observation hole 15 and partially blocks the observation hole 15 to restrain the cable. The front cover plate 143 has mounting holes through which fasteners pass to connect the fixing block 16 and install it within the observation hole 15. The fixing block 16 can be removed when it is necessary to expand the observation area. The fixing block 16 restrains the cable, preventing it from being pulled during the glue application process and affecting the winding of the motor coil.

[0039] To facilitate control of the adhesive flow rate and injection location, the housing assembly 1 also includes an auxiliary adhesive injection hole 122. At least one first adhesive injection hole 121 is located at the bottom of the front cover plate 143 and / or the rear cover plate 144, and the auxiliary adhesive injection hole 122 is located at the top cover plate 141. For example, as... Figure 2 As shown, a first glue injection hole 121 is provided at the bottom of the rear cover plate 144 for primary glue injection, which is performed from bottom to top. An auxiliary glue injection hole 122 is provided on the top cover plate 141 for auxiliary glue injection, which is performed from top to bottom. Both the first glue injection hole 121 and the auxiliary glue injection hole 122 are provided with glue nozzles 19 of corresponding sizes to facilitate connection of external glue injection tools.

[0040] The motor potting device, after completing the glue injection, is placed in a vacuum chamber. By drawing a vacuum, tiny air bubbles in the glue are removed, improving the quality of the glue injection and resulting in a more aesthetically pleasing appearance of the potted motor coil.

[0041] The side panel 145 is detachably connected to the injection boss 146. The housing assembly 1 has multiple ejector holes 18. Ejectors pass through the ejector holes 18 to push the injection boss 146 and / or the motor coil, thereby detaching the injection boss 146 and the motor coil from the injection cavity 11. During demolding, the injection boss 146 and the motor coil need to be ejected together, and then the injection boss 146 and the motor coil are separated. During demolding, the pressing force of the ejector pushes against the injection boss 146 or the motor coil, making it relatively easy to remove the potted motor coil. In one embodiment, the inner wall of the injection cavity 11 is coated with a release agent to form a release layer, further increasing the ease of demolding.

[0042] To further improve the appearance quality of the motor coil, the inner wall of the injection cavity 11 is sandblasted, so that the cured adhesive has a glossy appearance and a better texture.

[0043] In one embodiment, the motor potting apparatus further includes a calibration plate, which is configured to be attached to the surface of the motor coil to centrally position the motor coil within the potting cavity 11. The calibration plate is formed by curing the potting adhesive. For example, when epoxy resin is used as the adhesive, the calibration plate is an epoxy sheet. The calibration plate adheres to the surface of the motor coil and abuts against the inner wall of the potting cavity 11, ensuring the motor coil is centrally positioned within the potting cavity 11 and guaranteeing consistent encapsulation thickness. Since the calibration plate is formed by curing the potting adhesive, it can integrate with the adhesive on the surface of the motor coil and will not affect the adhesive distribution. The thickness of the calibration plate is determined according to the encapsulation quality requirements, typically around 0.5 mm.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A motor potting device for potting and encapsulating motor coils with adhesive, characterized in that, The motor potting device includes a housing assembly (1), which includes multiple interconnected cover plates. The multiple cover plates surround a glue injection cavity (11). The housing assembly (1) has at least one first glue injection hole (121) communicating with the glue injection cavity (11). The glue injection cavity (11) is used to accommodate the motor coil. At least one cover plate has a first sealing groove (131) on at least one end face of an adjacent cover plate. The first sealing groove (131) extends along the length, height, or width of the glue injection cavity (11). The first sealing groove (131) is filled with a flexible first sealing strip to seal the gap between two adjacent cover plates.

2. The motor potting device according to claim 1, characterized in that, The plurality of cover plates include a top cover plate (141) and a bottom cover plate (142) disposed opposite to each other, and a front cover plate (143), a rear cover plate (144), and two side panels (145) connected between the top cover plate (141) and the bottom cover plate (142). The top cover plate (141), the bottom cover plate (142), the front cover plate (143), the rear cover plate (144), and the two side panels (145) form a rectangular injection cavity (11). The two side panels (143) 45) is provided with glue injection bosses (146) on its inner side. The glue injection bosses (146) extend toward the glue injection cavity (11). The glue injection bosses (146) are configured to fill the irregular space of the motor coil. The glue injection bosses (146) and / or the side plate (145) are provided with a second sealing groove (132). The second sealing groove (132) is filled with a flexible second sealing strip to seal the gap between the glue injection bosses (146) and the side plate (145).

3. The motor potting device according to claim 2, characterized in that, The second sealing groove (132) extends circumferentially around the glue injection boss (146) and forms an annular groove.

4. The motor potting device according to claim 2, characterized in that, The front cover plate (143) and the rear cover plate (144) are arranged opposite to each other. The inner end face of the front cover plate (143) is simultaneously attached to one end of the top cover plate (141), the bottom cover plate (142) and the two side panels (145). The inner end face of the rear cover plate (144) is simultaneously attached to the other end of the top cover plate (141), the bottom cover plate (142) and the two side panels (145). The front cover plate (143) is provided with four first sealing grooves (131) respectively corresponding to the front end faces of the top cover plate (141), the bottom cover plate (142) and the two side panels (145). The rear cover plate (144) is provided with four first sealing grooves (131) respectively corresponding to the rear end faces of the top cover plate (141), the bottom cover plate (142) and the two side panels (145).

5. The motor potting device according to claim 2, characterized in that, The top cover plate (141) covers the upper side of the two side panels (145), and the bottom cover plate (142) covers the lower side of the two side panels (145). The top cover plate (141) has two first sealing grooves (131) respectively corresponding to the upper end face of the two side panels (145), and the bottom cover plate (142) has two first sealing grooves (131) respectively corresponding to the lower end face of the two side panels (145).

6. The motor potting device according to claim 2, characterized in that, The top cover plate (141) has a through observation hole (15) that is connected to the glue injection cavity (11).

7. The motor potting device according to claim 6, characterized in that, The end of the motor coil cable can pass through the observation hole (15) to extend to the outside of the housing assembly (1). The housing assembly (1) also includes a fixing block (16), which is detachably disposed in the observation hole (15) and blocks part of the observation hole (15) to constrain the cable.

8. The motor potting device according to claim 2, characterized in that, The housing assembly (1) is also provided with an auxiliary glue injection hole (122), at least one of the first glue injection holes (121) is provided at the bottom of the front cover plate (143) and / or the rear cover plate (144), and the auxiliary glue injection hole (122) is provided at the top cover plate (141).

9. The motor potting device according to claim 2, characterized in that, The side panel (145) is detachably connected to the glue injection boss (146). The housing assembly (1) has multiple ejection holes (18). The ejector passes through the ejection holes (18) to push the glue injection boss (146) and / or the motor coil so that the glue injection boss (146) and the motor coil are disengaged from the glue injection cavity (11).

10. The motor potting device according to claim 1, characterized in that, The inner wall of the injection cavity (11) is sandblasted; and / or, The inner wall of the injection cavity (11) is coated with a release layer; and / or, The motor potting device also includes a calibration plate, which is configured to be attached to the surface of the motor coil so that the motor coil is centered in the injection cavity (11). The calibration plate is formed by curing the adhesive used for potting.

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