Filling and sealing tool for motor stator

Abstract

The utility model provides a potting tool for a motor stator, and the tool comprises a pedestal which is provided with an accommodation groove for placing the motor stator; at least one part of the glue pouring core rod is arranged in the accommodating groove, and the glue pouring core rod is arranged on the inner side of the motor stator in a penetrating manner; a vertically through glue filling channel is arranged in the glue filling core rod; the top cover is detachably arranged at the top of the base; the top cover is provided with an assembly hole for exposing the top of the glue pouring core rod, the top cover is used for covering the motor stator, and the bottom surface of the top cover, the inner surface of the base and the glue pouring core rod jointly define an outer contour of the motor stator after glue pouring forming. The hollow glue filling core rod is adopted for glue filling, so that the motor stator is packaged by the glue solution from bottom to top, the generation of bubbles is effectively avoided, the outer contour of the motor stator is formed among the base, the top cover and the glue filling core rod, the encapsulation of the motor stator can be completed without secondary processing, the process complexity is effectively reduced, and the production efficiency is improved. And the product damage risk of secondary processing is reduced.

Description

Technical Field

[0001] The present application relates to the field of packaging technology, and in particular to a potting tool for a motor stator. Background Art

[0002] The potting of a motor refers to the process of potting epoxy glue on the coils of the motor stator windings to make the motor stator have good thermal conductivity and insulation. For example, a frameless motor stator does not have a motor housing, so there are high requirements for sealing and smooth glue surface during potting. In the existing potting tooling process, the glue is poured directly on the motor stator. The glue flows from top to bottom on the motor stator, which easily generates bubbles, resulting in the motor stator not being filled and the end face being uneven. Therefore, secondary lathe processing is often used to solve the problem. This process is not only complicated, but also secondary processing is prone to damage the product. Utility Model Content

[0003] The present application provides a potting tool for a motor stator, aiming to solve the problem in the prior art that the motor stator adopts secondary processing, resulting in high process complexity and easy damage to the product.

[0004] According to one aspect of the present application, an embodiment provides a potting tool, comprising: a base, the base being provided with a receiving groove, the receiving groove being used to place a motor stator; a glue potting core rod, at least a portion of the glue potting core rod being placed in the receiving groove and being used to be inserted into the inner side of the motor stator; a glue potting channel extending from top to bottom is provided in the glue potting core rod, the glue potting channel being used to communicate with the bottom of the motor stator so that glue liquid enters the motor stator from the bottom; a top cover, the top cover being detachably provided on the top of the base; the top cover being provided with an assembly hole for exposing the top of the glue potting core rod, the top cover being used to cover the motor stator, and the bottom surface of the top cover, the inner surface of the base and the outer side wall of the glue potting core rod together enclose the outer contour of the motor stator after glue potting.

[0005] In one embodiment, the bottom surface of the glue pouring core rod is in contact with the bottom of the accommodating groove, and the bottom surface of the glue pouring core rod is provided with at least two glue guiding grooves circumferentially arranged with the axis of the glue pouring channel as the center, one end of the glue guiding groove extends to the glue pouring channel, and the other end is exposed on the outer side wall of the glue pouring core rod and is used to communicate with the bottom of the motor stator.

[0006] In one embodiment, a connecting channel is further included, wherein the connecting channel is arranged at the bottom of the glue pouring core rod, the cross-sectional area of ​​the connecting channel is larger than the cross-sectional area of ​​the glue pouring channel, and the connecting channel is used to connect the glue pouring channel and the glue guiding groove.

[0007] In one embodiment, a plurality of wire holes are further provided on the top cover, and the number and positions of the wire holes match the number and positions of the wire outlets on the motor stator.

[0008] In one embodiment, the glue pouring core rod includes a glue pouring part and a filling part which are fixedly connected, the glue pouring part and the filling part are arranged in sequence along the up and down direction, the outer diameter of the glue pouring part is smaller than the outer diameter of the filling part, the glue pouring channel passes through the glue pouring part and the filling part in sequence along the up and down direction, the filling part is located in the accommodating groove and is used to be penetrated on the inner side of the motor stator; the glue pouring part passes through the assembly hole and is exposed to the top cover.

[0009] In one embodiment, a plurality of overflow grooves are provided on the top surface of the filling portion, one end of the overflow groove is exposed on the outer side wall of the filling portion and is used to communicate with the top of the motor stator; the top surface of the filling portion is not lower than the bottom surface of the top cover.

[0010] In one embodiment, a converging groove is further provided on the top surface of the filling portion, and the converging groove is arranged around the glue pouring portion, and each of the overflow grooves is circumferentially arranged along the side wall of the converging groove and one end extends to the converging groove.

[0011] In one embodiment, a mounting groove is further provided on the bottom surface of the top cover, and the mounting groove is arranged around the assembly hole. The mounting groove is used to cooperate with the top of the filling part to achieve radial positioning of the glue-potting core rod.

[0012] In one embodiment, a positioning groove is further provided on the bottom surface of the accommodating groove, and the positioning groove is provided in the central area of ​​the bottom surface of the accommodating groove, and the positioning groove is used to cooperate with the bottom of the filling portion to achieve radial positioning of the glue-filling core rod.

[0013] In one embodiment, at least one connecting hole is provided on the top of the base, and a positioning through hole is provided on the top cover corresponding to the position of the connecting hole. A connecting piece passes through the positioning through hole and is fixedly connected to the connecting hole to realize a detachable connection between the top cover and the base.

[0014] According to the potting tooling of the above-mentioned embodiment, since a hollow glue potting core rod is used for glue injection, the glue liquid encapsulates the motor stator from bottom to top, effectively avoiding the generation of bubbles, and the outer contour of the motor stator is formed between the base, the top cover and the glue potting core rod, and the potting of the motor stator can be completed without secondary processing, which effectively reduces the process complexity and reduces the risk of product damage in secondary processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the potting tooling structure in an embodiment of the present application.

[0016] Figure 2 This is an exploded view of the potting tooling in the embodiment of the present application.

[0017] Figure 3 This is a schematic diagram of the glue-filled core rod structure in an embodiment of the present application.

[0018] Figure 4 This is a schematic diagram of the glue in the embodiment of this application.

[0019] Figure 5 It is a schematic diagram of the top cover structure in the embodiment of the present application.

[0020] Figure 6 This is a cross-sectional view of the potting tooling in the embodiment of the present application.

[0021] Figure 7 It is a schematic cross-sectional view of the motor stator assembly in the embodiment of the present application.

[0022] Description of reference numerals:

[0023] 1-base; 10-accommodating groove; 11-positioning groove; 12-connecting hole; 2-glue pouring core rod; 20-glue pouring channel; 21-glue guiding groove; 22-connecting channel; 23-glue pouring part; 24-filling part; 25-overflow groove; 26-converging groove; 3-top cover; 30-assembly hole; 31-wire hole; 32-positioning through hole; 33-installation groove; 4-motor stator; 41-wire outlet. DETAILED DESCRIPTION

[0024] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0025] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0026] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0027] The present application embodiment provides a potting tool for a motor stator 4, please refer to Figure 1-7 The potting tool comprises a base 1, a potting core rod 2 and a top cover 3.

[0028] The base 1 is formed with a receiving groove 10, and the receiving groove 10 is used to place the motor stator 4. The base 1 is used as a potting receiving device for the motor stator 4, and its function is to place the motor stator 4 during potting, so the receiving groove 10 is used to place the motor stator 4. In order to make the motor stator 4 directly formed after potting without subsequent secondary processing, the inner surface of the receiving groove 10 of the base 1 matches the contour of the bottom surface and outer side wall of the motor stator 4 after potting, so that the motor stator 4 with sufficient flatness can be formed after potting.

[0029] At least a portion of the glue-potting core rod 2 is placed in the receiving groove 10, and the glue-potting core rod 2 is used to penetrate the inner side of the motor stator 4; a glue-potting channel 20 is provided in the glue-potting core rod 2, which is connected to the bottom of the motor stator 4 so that the glue enters the motor stator 4 from the bottom. The motor stator 4 is annular as a whole, and the glue-potting core rod 2 is inserted in the hollow area of ​​the motor stator 4, so the outer wall of the glue-potting core rod 2 matches the inner wall profile required for the motor stator 4 after potting, so that the motor stator 4 with sufficient flatness can be formed after potting.

[0030] The glue pouring core rod 2 is provided with a glue pouring channel 20 which is through from top to bottom. By providing the glue pouring channel 20, glue can be injected at the top of the glue pouring core rod 2, and the glue flows down along the glue pouring channel 20 to the bottom of the glue pouring core rod 2, and then the glue is discharged from the bottom of the glue pouring core rod 2. The glue flowing out from the bottom of the glue pouring core rod 2 will pour the motor stator 4 from bottom to top. During the pouring process, since the glue flows from bottom to top, the gas will be directly discharged from the top, thus avoiding the formation of bubbles inside the glue during the pouring process, and ensuring the tight filling of the motor stator 4 during the pouring process.

[0031] In some alternative embodiments, please refer to Figure 3In order to ensure that the glue flows out evenly from the bottom of the glue pouring core rod 2 during the glue pouring process, the bottom surface of the glue pouring core rod 2 is fitted with the bottom of the receiving groove 10, and the bottom surface of the glue pouring core rod 2 is provided with at least two glue guiding grooves 21 circumferentially arranged with the axis of the glue pouring channel 20 as the center, one end of the glue guiding groove 21 extends to the glue pouring channel 20, and the other end is exposed to the outer wall of the glue pouring core rod 2, and is used to communicate with the bottom of the motor stator 4. The glue guiding grooves 21 are symmetrically arranged along the axis of the glue pouring channel 20 as the symmetry center, so the glue flowing into the glue pouring channel 20 will flow evenly toward the receiving groove 10 along each glue guiding groove 21, thereby performing glue pouring operation on the motor stator 4 located in the receiving groove 10. The more the number of glue guiding grooves 21, the more even the diversion of the glue will be, and the more the motor stator 4 can be poured with equal amounts from all directions. Generally speaking, in the embodiment of the present application, the number of glue guiding grooves 21 is greater than or equal to 3, such as Figure 3 As shown, the number of the glue guiding grooves 21 is 8, and each glue guiding groove 21 forms a radial structure. The glue liquid can evenly flow out of the glue guiding grooves 21 along 8 directions to fill the motor stator 4 with glue.

[0032] In some optional embodiments, please continue to refer to Figure 3 In order to ensure the smoothness of the glue pouring process, a connecting channel 22 may also be included. The connecting channel 22 is arranged at the bottom of the glue pouring core rod 2. The cross-sectional area of ​​the connecting channel 22 is larger than the cross-sectional area of ​​the glue pouring channel 20. The connecting channel 22 is used to connect the glue pouring channel 20 and the glue guide groove 21. By setting a connecting channel 22 with a larger cross-sectional area than the glue pouring channel 20, the glue injected into the glue pouring channel 20 can be retained in the connecting channel 22, thereby avoiding the deviation of the glue when it is injected into the glue pouring channel 20, and ensuring that the flow rate of the glue in each glue guide groove 21 is equal as much as possible. Please refer to Figure 4 , Figure 4 A schematic diagram of the glue liquid in the glue pouring channel 20 , the connecting channel 22 and the glue guiding groove 21 during the glue pouring process is shown.

[0033] Please refer to Figure 5In order to form a motor stator 4 with a flatness that meets the standard, the glue pouring tooling in the embodiment of the present application includes a top cover 3, wherein the top cover 3 is detachably arranged on the top of the base 1; the top cover 3 is provided with an assembly hole 30 for exposing the top of the glue pouring core rod 2, and the top cover 3 is used to cover the motor stator 4, and the bottom surface of the top cover 3, the inner surface of the base 1 and the outer side wall of the glue pouring core rod 4 together enclose to form the outer contour of the motor stator 4 after the glue pouring molding. The top cover 3 is detachably connected to the top of the base 1. When the top cover 3 is disassembled from the base 1, the glue pouring core rod 2 and the motor stator 4 can be arranged in the accommodating cavity, and then the top cover 3 is fixedly connected to the base 1, so that the motor stator 4 can be fixed in the accommodating space enclosed by the base 1, the glue pouring core rod 2 and the top cover 3, so that the bottom surface of the top cover 3 matches the outer contour of the top surface of the motor stator required after the pouring is completed. In the accommodation space, the inner surface of the base 1, the bottom surface of the top cover 3 and the outer side wall of the glue-filling core rod 2 form the outer contour of the motor stator 4 after casting. When the glue is filled along the inner surface of the base 1 and the bottom surface of the top cover 3, the entire required motor stator 4 is formed. The formed motor stator 4 does not require secondary processing, which effectively reduces the complexity of the glue-filling process of the motor stator 4.

[0034] Since the glue injection needs to be performed through the glue injection core rod 2, an assembly hole 30 is provided on the top cover 3. The assembly hole 30 is a through hole, which allows the glue injection core rod 2 to be exposed, so as to achieve glue injection on the top of the glue injection core rod 2. It is worth mentioning that when the glue injection core rod 2 is exposed from the top cover 3, it can be directly extended to a certain length of the top cover 3, or it can be flush with the top surface of the top cover 3, as long as it does not affect the glue injection operation.

[0035] In some alternative embodiments, please refer to Figure 2 , Figure 5 and Figure 7 In order to prevent the outlet head 41 on the motor stator 4 from affecting the glue pouring, a plurality of wire holes 31 are also provided on the top cover 3, and the number and position of the wire holes 31 match the number and position of the outlet head 41 on the motor stator 4. When in use, the outlet head 41 can be placed in the wire hole 31 on the top cover 3 to prevent the outlet head 41 from affecting the glue pouring process, and there is no need to block the outlet head 41, thereby improving production efficiency. In addition, in order to avoid the influence of the length of the outlet head 41, the wire hole 31 can be directly set as a through hole that runs through from top to bottom, so that no matter how long the outlet head 41 is, it can extend from the wire hole 31.

[0036] In some optional embodiments, please continue to refer to Figure 2In order to facilitate the glue injection molding of the motor stator 4, the glue injection core rod 2 includes a glue injection part 23 and a plugging part 24 that are fixedly connected. The glue injection part 23 and the plugging part 24 are sequentially arranged in the up-down direction. The outer diameter of the glue injection part 23 is smaller than the outer diameter of the plugging part 24. The glue injection channel 20 sequentially passes through the glue injection part 23 and the plugging part 24 in the up-down direction. The plugging part 24 is located in the receiving groove 10 and is used to be penetrated on the inner side of the motor stator. The glue injection part 23 passes through the assembly hole 30 and is exposed to the top cover 3. Among them, the glue injection part 23 of the glue injection core rod 2 can be exposed to the top cover 3 for glue injection operation, and the plugging part 24 is located in the receiving groove 10 and inserted in the middle area of ​​the motor stator 4. The inner diameter of the motor stator 4 is consistent with the outer diameter of the plugging part 24. The glue pouring part 23 and the plugging part 24 are integrally formed, and the glue pouring channel 20 is connected along the glue pouring part 23 and the plugging part 24, that is, the entrance of the glue pouring channel 20 is located at the end of the glue pouring part 23, and the exit of the glue pouring channel 20 is located at the end of the plugging part 24. Since the outer diameter of the glue pouring part 23 is smaller than the outer diameter of the plugging part 24, the size of the assembly hole 30 of the top cover 3 can be designed to be larger than the outer diameter of the glue pouring part 23 and smaller than the outer diameter of the plugging part 24, and the glue pouring core rod 2 can be locked without affecting the glue injection operation, thereby improving the reliability during the glue pouring process.

[0037] In some optional embodiments, please continue to refer to Figure 2 In order to facilitate the discharge of air during the glue injection process and the discharge of excess glue from the accommodating chamber, the top surface of the filling part 24 can be provided with a plurality of overflow grooves 25, one end of which is exposed to the outer wall of the filling part 24 and communicated with the accommodating chamber 10; the top surface of the filling part 24 is not lower than the bottom surface of the top cover 3. Since one end of the overflow groove 25 is exposed to the outer wall of the filling part 24 and communicated with the accommodating chamber 10, the air in the accommodating chamber 10 can be discharged through the overflow groove 25 during the glue injection process; and when the glue injection process is completed, the excess glue can also be discharged from the accommodating chamber along the overflow groove 25 to ensure the surface flatness of the motor stator 4.

[0038] In some optional embodiments, please continue to refer to Figure 2In order to increase the accommodation space for the overflowed glue, the top surface of the filling part 24 can also be provided with a convergence groove 26, which is arranged around the glue filling part 23, and each overflow groove 25 is arranged circumferentially along the side wall of the convergence groove 26 and one end extends to the convergence groove 26. By setting the convergence groove 26, it can be connected to each overflow groove 25, so that the overflowed glue can flow into the convergence groove 26 after passing through the overflow groove 25, thereby increasing the capacity of the overflowed glue. In addition, the overflow groove 25 can also be arranged radially based on the axis of the glue filling channel 20 as the symmetry center, and because during the glue filling process, the glue flows out from the bottom glue guide groove 21, and the position corresponding to the glue guide groove 21 is the position with a high probability of overflowing glue, so the opening of the overflow groove 25 in the filling part 24 can be set to be consistent with the opening of the glue guide groove 21 on the filling part 24; if each glue guide groove 21 includes 8 and is arranged radially, then the corresponding overflow groove 25 also includes 8, which is also radial.

[0039] In some optional embodiments, in order to install and limit the glue-filling core rod 2, a mounting groove 33 may be further provided on the bottom surface of the top cover 3. The mounting groove 33 is provided around the assembly hole 30, and the mounting groove is used to cooperate with the top of the plugging portion 24 to achieve radial positioning of the glue-filling core rod 2. By providing the mounting groove 33, the plugging portion 24 of the glue-filling core rod 2 can be clamped in the mounting groove 33, thereby preventing the glue-filling core rod 2 from radial displacement. In addition, the depth of the mounting groove 33 is set to be less than the depth of the overflow groove 25, so that the overflow groove 25 can maintain communication with the accommodating groove 10, and avoid the gas and overflowed glue liquid from being unable to be discharged after the mounting groove 33 blocks the overflow groove 25.

[0040] In some optional embodiments, in order to limit the installation of the glue-filling core rod 2, a positioning groove 11 is further provided on the bottom surface of the receiving groove 10. The positioning groove 11 is provided in the central area of ​​the bottom surface of the receiving groove 10. The positioning groove 11 is used to cooperate with the bottom of the filling portion 24 to achieve radial positioning of the glue-filling core rod 2. In the case of providing the positioning groove 11, the glue-filling core rod 2 can be connected to the base 1 by being embedded in the positioning groove 11, so that the displacement of the glue-filling core rod 2 can be avoided. Since the positioning groove 11 is provided on the bottom surface of the receiving groove 10 of the base 1, the other parts of the bottom surface of the receiving groove 10 are higher than the positioning groove 11. The depth of the positioning groove 11 in the receiving groove 10 can be set according to the outline size of the motor stator 4 to be glued, that is, the height of the bottom surface of the receiving groove 10 is set to match the size of the motor stator 4.

[0041] In some optional embodiments, in order to achieve a detachable connection between the top cover 3 and the base 1, at least one connecting hole 12 is provided on the top of the base 1, and a positioning through hole 32 is provided at the position of the top cover 3 corresponding to the connecting hole 12, and the connecting member is fixedly connected to the connecting hole 12 after passing through the positioning through hole 32, so as to achieve a detachable connection between the top cover 3 and the base 1. Specifically, the connecting hole 12 can be set as a threaded hole, and the positioning through hole 32 can be set as a smooth through hole or a threaded through hole, and the connecting member includes a threaded fastener such as a screw, a bolt, and a stud, and the connecting member passes through the positioning through hole 32 in sequence and is threadedly connected to the connecting hole 12 to achieve a fixed connection between the top cover 3 and the base 1. The fixed connection can be released by releasing the threaded fit between the connecting member and the connecting hole 12, thereby achieving a detachable fixed connection, and after the release, the motor stator 4 can be put in and taken out.

[0042] According to the potting tool for the motor stator 4 provided in the embodiment of the present application, since a hollow potting core rod 2 is used for glue injection, the glue liquid encapsulates the motor stator 4 from bottom to top, effectively avoiding the generation of bubbles, and the outer contour of the motor stator 4 is formed between the base 1, the top cover 3 and the potting core rod 2, and the potting of the motor stator 4 can be completed without secondary processing, which effectively reduces the process complexity and reduces the risk of product damage in secondary processing.

[0043] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A potting tool, characterized in that: include: A base, wherein the base is provided with a receiving groove, and the receiving groove is used to place the motor stator; A glue pouring mandrel, at least a portion of which is placed in the receiving groove and is used to be inserted into the inner side of the motor stator; a glue pouring channel is provided in the glue pouring mandrel, which is connected to the bottom of the motor stator so that the glue liquid enters the motor stator from the bottom; A top cover, wherein the top cover is detachably arranged on the top of the base; the top cover is provided with an assembly hole for exposing the top of the glue-potting core rod, the top cover is used to cover the motor stator, and the bottom surface of the top cover, the inner surface of the base and the outer side wall of the glue-potting core rod jointly enclose the outer contour of the motor stator after glue-potting molding.

2. The potting tool as claimed in claim 1, characterized in that: The bottom surface of the glue pouring core rod is in contact with the bottom of the accommodating groove, and the bottom surface of the glue pouring core rod is provided with at least two glue guiding grooves circumferentially arranged with the axis of the glue pouring channel as the center, one end of the glue guiding groove extends to the glue pouring channel, and the other end is exposed on the outer side wall of the glue pouring core rod and is used to communicate with the bottom of the motor stator.

3. The potting tool as claimed in claim 2, characterized in that: It also includes a connecting channel, which is arranged at the bottom of the glue pouring core rod. The cross-sectional area of ​​the connecting channel is larger than the cross-sectional area of ​​the glue pouring channel. The connecting channel is used to connect the glue pouring channel and the glue guiding groove.

4. The potting tool according to claim 1, characterized in that: The top cover is also provided with a plurality of wire holes, the number and positions of the wire holes match the number and positions of the wire outlets on the motor stator.

5. The potting tool according to any one of claims 1 to 4, characterized in that: The glue pouring core rod includes a glue pouring part and a filling part which are fixedly connected, and the glue pouring part and the filling part are arranged in sequence along the up-down direction, the outer diameter of the glue pouring part is smaller than the outer diameter of the filling part, and the glue pouring channel passes through the glue pouring part and the filling part in sequence along the up-down direction, the filling part is located in the accommodating groove and is used to be penetrated on the inner side of the motor stator; the glue pouring part passes through the assembly hole and is exposed to the top cover.

6. The potting tool as claimed in claim 5, characterized in that: The top surface of the filling part is provided with a plurality of overflow grooves, one end of which is exposed at the outer side wall of the filling part and is used to communicate with the top of the motor stator; the top surface of the filling part is not lower than the bottom surface of the top cover.

7. The potting tool as claimed in claim 6, characterized in that: The top surface of the filling portion is also provided with a convergence groove, and the convergence groove is arranged around the glue pouring portion. Each of the overflow grooves is circumferentially arranged along the side wall of the convergence groove and one end extends to the convergence groove.

8. The potting tool as claimed in claim 6, characterized in that: The bottom surface of the top cover is also provided with a mounting groove, which is arranged around the assembly hole and is used to cooperate with the top of the filling part to achieve radial positioning of the glue-filling core rod.

9. The potting tool as claimed in claim 6, characterized in that: A positioning groove is also provided on the bottom surface of the accommodating groove. The positioning groove is provided in the central area of ​​the bottom surface of the accommodating groove. The positioning groove is used to cooperate with the bottom of the filling portion to achieve radial positioning of the glue-filling core rod.

10. The potting tool according to any one of claims 1 to 4, characterized in that: At least one connecting hole is provided on the top of the base, and a positioning through hole is provided on the top cover corresponding to the position of the connecting hole. A connecting piece passes through the positioning through hole and is fixedly connected to the connecting hole to realize a detachable connection between the top cover and the base.

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