Conductive rod and mold

Abstract

The embodiment of the present application provides a conductive rod and a mold. The conductive rod is applied to a pole, and the pole includes a vacuum arc extinguishing chamber. The conductive rod includes a rod-shaped body and a positioning portion arranged at one end of the axial direction of the rod-shaped body. The positioning portion is used to connect with the vacuum arc extinguishing chamber, and the positioning portion forms a first mating plane for mating with the mold, and the first mating plane is parallel to the axial direction of the rod-shaped body. The guide rod of the embodiment of the present application forms a first mating plane parallel to the axial direction of the rod-shaped body, and the mold can be matched with the first mating plane. In this way, the accuracy of positioning the conductive rod during injection molding of the pole body can be improved, thereby improving the yield rate.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical field of electrical equipment, and in particular to a conductive rod and a mold. Background Art

[0002] The pole of the pole-mounted circuit breaker usually includes a vacuum interrupter, the upper end of the vacuum interrupter is connected to the incoming line terminal, the lower end of the vacuum interrupter is connected to the outgoing line terminal, and the outgoing line terminal is led out through a conductive rod.

[0003] In the related art, the pole is usually prepared by injection molding. In the related art, there is a problem of inaccurate positioning of the conductive rod during the injection molding process, resulting in a decrease in the yield rate. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide a conductive rod and a mold that can improve the positioning accuracy during injection molding.

[0005] A first aspect of an embodiment of the present application provides a conductive rod, which is applied to a pole, wherein the pole includes a vacuum arc extinguishing chamber, and the conductive rod includes: a rod-shaped body; and a positioning portion, which is arranged at one axial end of the rod-shaped body, wherein the positioning portion is used to connect to the vacuum arc extinguishing chamber, and the positioning portion forms a first mating plane for mating with a mold, and the first mating plane is parallel to the axial direction of the rod-shaped body.

[0006] In some embodiments, the positioning portion forms at least one fixing hole for connecting with the vacuum interrupter, and the fixing hole opens to the first matching plane.

[0007] In some embodiments, in a projection plane perpendicular to the axial direction of the rod-shaped body, a projection of the positioning portion covers a projection of the rod-shaped body.

[0008] In some embodiments, the conductive rod further includes a positioning protrusion protruding from the first mating plane, and the positioning protrusion is located on a side of the first mating plane close to the rod-shaped body.

[0009] In some embodiments, a side surface of the positioning protrusion facing away from the rod-shaped body is formed as a second matching plane, and the second matching plane is perpendicular to the axial direction of the rod-shaped body.

[0010] In some embodiments, in a projection plane perpendicular to the axial direction of the rod-shaped body, the positioning portion and the positioning protrusion together form a circular projection.

[0011] The second aspect of the embodiment of the present application provides a mold, which is used to form a pole body of a pole, wherein the pole includes a conductive rod and a vacuum arc extinguishing chamber, and the pole body is used to seal the conductive rod and the vacuum arc extinguishing chamber, wherein the conductive rod includes a rod-shaped body and a positioning portion arranged at one end of the rod-shaped body, wherein the positioning portion is used to connect with the vacuum arc extinguishing chamber, and the positioning portion forms a first mating plane, and the first mating plane is parallel to the axial direction of the rod-shaped body, and the mold includes: a fixed mold and a movable mold, wherein the fixed mold and the movable mold are detachably connected, and the fixed mold and the movable mold can be surrounded to form a cavity matching the outer shape of the pole body; a first die head, which is detachably arranged in the cavity, and the top side of the first die head forms a first abutting plane, and the first abutting plane is used to abut against the first mating plane to position the conductive rod in the cavity.

[0012] In some embodiments, the positioning portion forms at least one fixing hole for connecting to the vacuum interrupter, and the first die head forms at least one connecting structure for connecting to the fixing hole.

[0013] In some embodiments, the top surface of the first die head is recessed to form a first positioning groove, and the first abutting plane is formed in the first positioning groove.

[0014] In some embodiments, the mold includes a first core puller, which is detachably disposed in the mold cavity, and is used to form a first installation cavity on the pole body, and the first die head is connected to the first core puller.

[0015] In some embodiments, the first core pulling forms a first installation groove, the top side of the first installation groove is open, and the first die head can be movably disposed in the first installation groove.

[0016] In some embodiments, the area of ​​a reference cross section of the first die head gradually decreases from the top side to the bottom side of the mold, and the reference cross section is perpendicular to the height direction of the mold.

[0017] In some embodiments, the conductive rod includes a positioning protrusion protruding from the first mating plane, and the positioning protrusion is located on the side of the first mating plane close to the rod-shaped body. One side surface of the first die head along the first direction is abutted against the first core pulling, and the other side surface is partially recessed to form a second positioning groove, and the second positioning groove is matched with the positioning protrusion, and the first direction is perpendicular to the height direction of the mold.

[0018] In some embodiments, a side surface of the positioning protrusion facing away from the rod-shaped body is formed as a second mating plane, the second mating plane is perpendicular to the axial direction of the rod-shaped body, and the second positioning groove has a second abutment plane, which is used to abut against the second mating plane.

[0019] In some embodiments, the first core puller has a protruding portion protruding from the top side of the first die head, and a side surface of the protruding portion along a first direction is used to abut against a side end surface of the positioning portion along the axial direction of the rod-shaped body, and the first direction is perpendicular to the height direction of the mold.

[0020] In some embodiments, the mold also includes a first locking assembly, which is connected to the fixed mold, and the first locking assembly is used to apply a force along the first direction to the conductive rod so that the conductive rod and / or the first die head rests against the first core puller.

[0021] In some embodiments, the mold includes a second die head, which is detachably disposed in the mold cavity, the first die head and the second die head are distributed along the first direction, the second die head is used to connect to one end of the rod-shaped body away from the positioning portion, and the first locking assembly is connected to the second die head.

[0022] In some embodiments, one end surface of the second die head facing the first die head is recessed to form a receiving hole extending along the first direction, and the receiving hole is used to receive the rod-shaped body.

[0023] In some embodiments, the receiving hole is formed as a threaded hole.

[0024] In some embodiments, the fixed mold and the movable mold are arranged to form an opening connected to the cavity, one end of the second die head away from the first die head extends outside the cavity through the opening, and the first locking assembly is located outside the cavity.

[0025] In some embodiments, the first locking assembly includes: a fixing member connected to the fixed mold, the fixing member forming a guide threaded hole, the guide threaded hole penetrating the fixing member along the first direction; a threaded rod forming a threaded fit with the guide threaded hole, one end of the threaded rod being used to abut against the second mold head, and the other end forming an operating portion.

[0026] In some embodiments, the mold also includes a second locking assembly, which is disposed on the movable mold. The second locking assembly is used to abut against a side surface of the second die head along a second direction, and the first direction, the second direction and the height direction of the mold are perpendicular to each other.

[0027] In some embodiments, the mold also includes a third die head, which is detachably connected to the first core puller, and the third die head is used to connect to the bottom end of the vacuum arc chamber; and / or the mold also includes a fourth die head, which is detachably arranged in the cavity and located on the top side of the first core puller, and the fourth die head is used to connect to the top end of the vacuum arc chamber.

[0028] In some embodiments, the mold further includes at least one second core pulling device, the second core pulling device is spaced apart from the first core pulling device, and the second core pulling device is used to form a second installation cavity isolated from the first installation cavity in the pole body.

[0029] In some embodiments, the mold further includes a plurality of fifth die heads respectively connected to the first core puller and the second core puller, and the fifth die heads are used to connect to the wiring caps.

[0030] The guide rod of the embodiment of the present application forms a first matching plane parallel to the axial direction of the rod-shaped body, and the mold can match with the first matching plane. In this way, the accuracy of positioning the conductive rod during injection molding of the pole body can be improved, thereby improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a conductive rod according to an embodiment of the present application;

[0032] Figure 2 A side view of a mold according to an embodiment of the present application;

[0033] Figure 3 for Figure 2 AA section diagram of the middle mold;

[0034] Figure 4 A schematic diagram of the matching relationship of some structures of the mold according to an embodiment of the present application;

[0035] Figure 5 It is an exploded schematic diagram of the core pulling assembly and the die head assembly of an embodiment of the present application.

[0036] Description of Reference Numerals

[0037] 100, conductive rod; 101, rod-shaped body; 102, positioning portion; 1021, first matching plane; 1022, fixing hole; 103, positioning protrusion; 1031, second matching plane;

[0038] 200, vacuum interrupter; 201, wiring cap;

[0039] 300, mold; 300a, cavity; 301, movable mold; 302, fixed mold; 303, first die; 303a, first positioning groove; 303b, second positioning groove; 303c, connecting structure; 3031, first abutment plane; 3032, second abutment plane; 304, first core pulling; 304a, first mounting groove; 304b, second mounting groove; 3041, raised portion; 305, second die; 3051, accommodating hole; 306, first locking assembly; 3061, fixing piece; 3061a, guide threaded hole; 3062, threaded rod; 3062a, operating portion; 3063, abutment head; 307, second locking assembly; 308, third die; 309, fourth die; 310, second core pulling; 311, fifth die. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of the specific technical features in the present invention will not be described separately.

[0042] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the specific corresponding schematic diagrams, which may be the left and right directions in normal use or not.

[0043] In the description of the present application, the orientations or positional relationships of “first direction”, “second direction” and “height direction” are based on the orientations or positional relationships shown in the accompanying drawings, wherein the “first direction” is the direction indicated by the arrow L1 in the accompanying drawings, the “second direction” is the direction indicated by the arrow L2 in the accompanying drawings, and the “height direction” is the direction indicated by the arrow L3 in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0045] For ease of understanding, the conductive rod and the pole adapted by the mold according to the embodiment of the present application will be first introduced below.

[0046] The pole is used in pole-mounted circuit breakers. The pole usually includes a pole body, a vacuum interrupter, a conductive rod, a current sensor, a voltage sensor, an insulating pull rod, etc. The pole body is prepared by injection molding, and the vacuum interrupter, the conductive rod and the current sensor are sealed in the pole body.

[0047] One end of the vacuum interrupter is connected to the incoming line, and the other end is connected to the flexible connector conductive rod. The end of the conductive rod away from the vacuum interrupter leads to the outgoing line. The current sensor ring is arranged on the outside of the conductive rod. The incoming line, vacuum interrupter and outgoing line form a path. The flexible connector is also connected to the insulating rod. When the current sensor, voltage sensor, etc. detect that the distribution network line is abnormal, the mechanism box of the pole-mounted circuit breaker pulls the insulating rod to disconnect the flexible connector from the vacuum interrupter, thereby disconnecting the above path to achieve the effect of isolating the fault.

[0048] In the related art, during the injection molding process of the pole body, there are problems of inaccurate positioning and / or unstable position of the conductive rod, resulting in a decrease in the yield rate.

[0049] In view of the above problems, a conductive rod and a mold according to an embodiment of the present application are proposed.

[0050] Reference Figure 1 The conductive rod 100 of the embodiment of the present application includes a rod-shaped body 101 and a positioning portion 102. The positioning portion 102 is arranged at one axial end of the rod-shaped body 101. The positioning portion 102 is used to connect with the vacuum arc chamber 200, and the positioning portion 102 forms a first mating plane 1021 for mating with the mold. The first mating plane 1021 is parallel to the axial direction of the rod-shaped body 101.

[0051] The mold here specifically refers to a mold used for molding a pole body. As an example, the mold may be the mold 300 in any embodiment to be described below.

[0052] In the related art, the conductive rod is a cylindrical structure whose circumferential surface is a circular surface. In the present embodiment, the positioning portion 102 forms a first mating plane 1021 which is parallel to the axial direction of the rod-shaped body 101. Unlike the circular surface, the first mating plane 1021 can be used as a positioning reference during the mold assembly process, thereby helping to improve the accuracy of positioning the conductive rod 100.

[0053] In some embodiments, the positioning portion 102 forms at least one fixing hole 1022 for connecting with the vacuum interrupter 200 , and the fixing hole 1022 opens to the first matching plane 1021 .

[0054] Here, the fixing hole 1022 can be specifically used to connect with the soft connector mentioned above. As an example, the fixing hole 1022 can be a threaded hole. In this embodiment, the fixing hole 1022 is opened on the first matching plane 1021. In this way, on the one hand, it helps to further improve the accuracy of positioning the conductive rod 100 (the fixing hole 1022 can be used as a reference to assist positioning). On the other hand, as mentioned above, in the actual injection molding process, the first matching plane 1021 will be against the mold 300, and the positioning hole is opened on the first matching plane 1021. In this way, the mold 300 will be able to at least partially cover the opening of the positioning hole, which helps to reduce the possibility of the injection material entering and blocking the fixing hole 1022.

[0055] Of course, in some other embodiments, the fixing hole 1022 may not open on the first matching plane 1021 , but may open on other surfaces of the positioning portion 102 , such as a side surface away from the rod-shaped body 101 .

[0056] In some embodiments, in a projection plane perpendicular to the axial direction of the rod-shaped body 101 , the projection of the positioning portion 102 covers the projection of the rod-shaped body 101 .

[0057] In this embodiment, the projection of the positioning portion 102 covers the projection of the rod-shaped body 101, that is, the positioning portion 102 is not formed into a tip due to the setting of the first matching plane 1021. In this way, the possibility of tip discharge of the conductive rod 100 can be reduced, thereby improving product performance.

[0058] In some embodiments, still referring to Figure 1The conductive rod 100 further includes a positioning protrusion 103 protruding from the first mating plane 1021, and the positioning protrusion 103 is located on the side of the first mating plane 1021 close to the rod-shaped body 101. In this way, in actual use, the conductive rod 100 can be positioned along the axial direction of the rod-shaped body 101 by the positioning protrusion 103, thereby further improving the accuracy of positioning the conductive rod 100. On the other hand, the provision of the positioning protrusion 103 also helps to uniform the electric field, thereby further reducing the possibility of tip discharge of the conductive rod 100 and improving product performance.

[0059] In some embodiments, specifically, a side surface of the positioning protrusion 103 facing away from the rod-shaped body 101 is formed as a second matching plane 1031 , and the second matching plane 1031 is perpendicular to the axial direction of the rod-shaped body 101 .

[0060] In this embodiment, a second mating plane 1031 is formed on the positioning protrusion 103, and the second mating plane 1031 helps to position the axial direction of the conductive rod 100 (when the second mating plane 1031 is in contact with the corresponding plane on the mold, the axial direction of the rod-shaped body 101 will be perpendicular to the corresponding plane on the mold), thereby helping to further improve the accuracy of positioning the conductive rod 100.

[0061] In some embodiments, the positioning portion 102 and the positioning protrusion 103 together form a circular projection in a projection plane perpendicular to the axial direction of the rod-shaped body 101. This helps to further even out the electric field of the conductive rod 100 and reduce the possibility of tip discharge of the conductive rod 100.

[0062] A second aspect of the embodiment of the present application provides a mold 300 for molding a pole body of a pole.

[0063] As mentioned above, the pole includes a conductive rod 100 and a vacuum arc chamber 200, and the pole body is used to seal the conductive rod 100 and the vacuum arc chamber 200. The conductive rod 100 includes a rod-shaped body 101 and a positioning portion 102 arranged at one end of the rod-shaped body 101, and the positioning portion 102 is used to connect with the vacuum arc chamber 200, and the positioning portion 102 forms a first mating plane 1021, and the first mating plane 1021 is parallel to the axial direction of the rod-shaped body 101.

[0064] Reference Figure 2-Figure 5 The mold 300 of the embodiment of the present application includes a fixed mold 302 , a movable mold 301 and a first die head 303 .

[0065] The fixed mold 302 and the movable mold 301 are detachably connected, and the fixed mold 302 and the movable mold 301 can enclose a cavity 300a formed to match the shape of the pole body. In this embodiment, the specific structure of the fixed mold 302 and the movable mold 301 is not limited, and those skilled in the art can specifically determine it according to the shape of the pole body to be prepared according to actual needs.

[0066] The first die head 303 is detachably disposed in the cavity 300a, and a first abutting plane 3031 is formed on the top side of the first die head 303. The first abutting plane 3031 is used to abut against the first matching plane 1021 of the conductive rod 100 to position and install the conductive rod 100 in the cavity 300a.

[0067] The specific structural form of the first die head 303 is not limited, as long as its top side can form the first abutting plane 3031. The specific position of the first die head 303 is not limited, as long as the conductive rod 100 can be located at a desired position (i.e., a position suitable for connection with the vacuum interrupter 200) when the first matching plane 1021 of the conductive rod 100 abuts against the first abutting plane 3031.

[0068] In this embodiment, a first abutment plane 3031 is formed on the first die head 303. During the mold assembly process, the operator can use the first abutment plane 3031 and the first matching plane 1021 as references to position the conductive rod 100, thereby improving the accuracy of positioning the conductive rod 100.

[0069] In some embodiments, reference Figure 1 and Figure 5 The positioning portion 102 of the conductive rod 100 forms at least one fixing hole 1022 . The first die head 303 forms at least one connecting structure 303 c , and the connecting structure 303 c is used to connect with the fixing hole 1022 .

[0070] In this embodiment, the specific structural form of the connection structure 303c is not limited. As an example, the connection structure 303c can be a hole structure, and can be inserted into the connection structure 303c and the fixing hole 1022 by means of bolts, latches and other connecting parts, so as to achieve the connection between the connection structure 303c and the fixing hole 1022. As another example, the connection structure 303c can be a protruding structure protruding from the outer surface of the first die head 303, and the connection structure 303c can be inserted into the fixing hole 1022 to achieve the connection with the fixing hole 1022.

[0071] The specific location where the connection structure 303c is disposed can be determined according to the location of the fixing hole 1022 and the specific connection method between the connection structure 303c and the fixing hole 1022. As mentioned above, in some embodiments, the fixing hole 1022 of the conductive rod 100 opens on the first matching plane 1021. In this case, the connection structure 303c can be disposed on the first abutting plane 3031 accordingly.

[0072] In this embodiment, the first die head 303 forms a connection structure 303c for connecting to the fixing hole 1022 of the conductive rod 100. During actual injection molding, the first die head 303 can be connected to the conductive rod 100 through the connection structure 303c. After the injection molding is completed, the first die head 303 is removed from the conductive rod 100. In this way, on the one hand, the positioning accuracy of the conductive rod 100 can be further improved. On the other hand, the connection of the connection structure 303c with the fixing hole 1022 helps to improve the position stability of the conductive rod 100 during the injection molding process, thereby further improving the yield rate. On the other hand, the connection of the connection structure 303c with the fixing hole 1022 can also reduce the possibility of the injection molding material entering and blocking the fixing hole 1022.

[0073] In some embodiments, reference Figure 5 The top surface of the first die head 303 is partially recessed to form a first positioning groove 303a, and a first abutting plane 3031 is formed in the first positioning groove 303a. The specific structural form of the first positioning groove 303a is not limited. As an example, the first positioning groove 303a can be adapted to the outer shape of the positioning portion 102. When the first abutting plane 3031 abuts against the first matching plane 1021, the groove wall of the first positioning groove 303a fits the outer surface of the positioning portion 102.

[0074] In this embodiment, the first positioning groove 303a helps to guide the first mating plane 1021 of the conductive rod 100 to abut against the first abutting plane 3031, and in an embodiment in which a connecting structure 303c is provided on the first abutting plane 3031, it helps to guide the connecting structure 303c to connect with the fixing hole 1022, thereby improving the assembly efficiency of the mold 300 and thereby improving the production efficiency.

[0075] On the other hand, the first positioning groove 303 a helps to limit the relative movement between the positioning portion 102 and the first die head 303 , thereby further improving the stability of the position of the conductive rod 100 during the injection molding process.

[0076] On the other hand, the first positioning groove 303 a also helps to prevent the injection material from entering the gap between the first abutting plane 3031 and the first matching plane 1021 , thereby improving product quality and further reducing the possibility of the injection material entering and blocking the fixing hole 1022 .

[0077] In some embodiments, reference Figure 3-Figure 5 The mold 300 includes a first core puller 304 detachably disposed in the mold cavity 300a. The first core puller 304 is used to form a first installation cavity with the pole body, and the first die head 303 is detachably connected to the first core puller 304.

[0078] As mentioned above, the pole includes an insulating rod, and the first installation cavity here can be specifically used to install the insulating rod. In addition to being used to install the insulating rod, the first installation cavity can also be used to install an insulating cylinder, which can be used to accommodate a voltage sensor, a power-taking device or other electrical components. Those skilled in the art can determine the specific shape of the first core pull 304 according to the specific shape of the first installation cavity that needs to be formed, and there is no limitation on this.

[0079] In some embodiments, reference Figure 5 The first core puller 304 forms a first mounting groove 304a, the top side of the first mounting groove 304a is open, and the first die head 303 is movably disposed in the first mounting groove 304a. In this embodiment, when the first core puller 304 moves downward, the first die head 303 will be able to move out of the first mounting groove 304a through the opening on the top side of the first mounting groove 304a. In this way, after the actual injection molding is completed, the core pulling operation of the first core puller 304 can be completed directly from the bottom side of the mold 300.

[0080] In some embodiments, the area of ​​the reference cross section of the first die head 303 gradually decreases from the top side to the bottom side of the mold 300, and the reference cross section is perpendicular to the height direction of the mold 300. In this way, the resistance of the first die head 303 and the groove wall of the first installation groove 304a when they move relative to each other along the height direction can be reduced, which facilitates the assembly of the first die head 303 into the first installation groove 304a and also helps to reduce the difficulty of core pulling.

[0081] In some embodiments, reference Figure 1 and Figure 5 The conductive rod 100 includes a positioning protrusion 103 protruding from the first matching plane 1021, and the positioning protrusion 103 is located on the side of the first matching plane 1021 close to the rod-shaped body 101. One side surface of the first die head 303 along the first direction abuts against the first core puller 304, and the other side surface is partially recessed to form a second positioning groove 303b, and the second positioning groove 303b is used for the positioning protrusion 103 to be matched and connected. Here, the second positioning groove 303b is adapted to the positioning protrusion 103, specifically, the second positioning groove 303b can accommodate the positioning protrusion 103, and when the positioning protrusion 103 is located in the second positioning groove 303b, the groove wall of the second positioning groove 303b fits the positioning protrusion 103.

[0082] In this embodiment, the cooperation between the second positioning groove 303 b and the positioning protrusion 103 helps to improve the axial position accuracy of the conductive rod 100 , and helps to improve the stability of the position of the conductive rod 100 along the axial direction.

[0083] As mentioned above, in some embodiments, the first core pull 304 forms a first installation groove 304 a . In this embodiment, the first installation groove 304 a is open along one side of the first direction, so that the second positioning groove 303 b is exposed on the outer surface of the first core pull 304 .

[0084] Further, as mentioned above, in some embodiments, in the projection plane perpendicular to the axial direction of the rod-shaped body 101, the positioning portion 102 and the positioning protrusion 103 jointly form a circular projection, that is, the outer periphery of the positioning protrusion 103 is arc-shaped. In this embodiment, the second positioning groove 303b can be specifically formed as an arc-shaped groove.

[0085] In some embodiments, a side surface of the positioning protrusion 103 facing away from the rod-shaped body 101 is formed as a second mating plane 1031, and the second mating plane 1031 is perpendicular to the axial direction of the rod-shaped body 101. The second positioning groove 303b has a second abutment plane 3032, and the second abutment plane 3032 is used to abut against the second mating plane 1031.

[0086] In this embodiment, the cooperation between the second abutting plane 3032 and the second matching plane 1031 helps to improve the accuracy of the orientation of the guide rod (when the second abutting plane 3032 and the second matching plane 1031 abut against each other, the axial direction of the rod-shaped body 101 will be parallel to the first direction).

[0087] In some embodiments, reference Figure 5 The first core puller 304 has a protruding portion 3041 protruding from the top side of the first die head 303, and a side surface of the protruding portion 3041 along the first direction is used to abut against a side end surface of the positioning portion 102 along the axial direction of the rod-shaped body 101, and the first direction is perpendicular to the height direction of the mold 300.

[0088] In this embodiment, the protrusion 3041 cooperates with the end surface of the positioning portion 102 , which helps to improve the axial position accuracy of the conductive rod 100 .

[0089] It can be understood that the protrusion 3041 and the second positioning groove 303b described above both have the effect of improving the axial position accuracy of the conductive rod 100. In actual application, both can be set at the same time, or only one of them can be set, and there is no limitation to this.

[0090] Further, in the above embodiment, the first die head 303 and / or the conductive rod 100 need to abut against the first core puller 304 along the first direction. Figure 3and Figure 4 In some embodiments, the first core puller 304 further includes a first locking assembly 306 connected to the fixed mold 302, and the first locking assembly 306 is used to apply a force along the first direction to the conductive rod 100, so that the conductive rod 100 and / or the first die head 303 abut against the first core puller 304. In this way, the axial positioning of the guide rod is achieved, and at the same time, the stability of the axial position of the conductive rod 100 during the injection molding process can be improved. In some other embodiments, the force along the first direction can also be applied to the conductive rod 100 by means of an external structure.

[0091] In this embodiment, the specific structure of the first locking assembly 306 is not limited, as long as it can exert a force along the first direction on the conductive rod 100 .

[0092] In some embodiments, reference Figure 3 and Figure 4 The mold 300 includes a second die head 305, which is detachably disposed in the mold cavity 300a. The first die head 303 and the second die head 305 are distributed along the first direction. The second die head 305 is used to connect with one end of the rod-shaped body 101 away from the positioning portion 102, and the first locking assembly 306 is connected to the second die head 305.

[0093] In this embodiment, the second die head 305 can preliminarily fix the end of the rod-shaped body 101 away from the positioning portion 102, and then use the first locking component 306 to apply a force along the first direction to the conductive rod 100 for final fixation. In this way, the mold assembly efficiency can be improved, thereby improving production efficiency.

[0094] In some embodiments, reference Figure 3 and Figure 4 The second die head 305 has an end surface facing the first die head 303 on one side thereof recessed to form a receiving hole 3051 extending along the first direction, and the receiving hole 3051 is used to receive the rod-shaped body 101 .

[0095] In this embodiment, the second die head 305 forms a receiving hole 3051, so that the stability of the connection between the second die head 305 and the rod-shaped body 101 can be improved. Further, after the injection molding is completed, the portion of the rod-shaped body 101 located in the receiving hole 3051 will be exposed outside the injection-molded pole body, so that the outlet end of the pole can be easily led out.

[0096] In some embodiments, the receiving hole 3051 is formed as a threaded hole. In this embodiment, a threaded structure is formed at one end of the rod-shaped body 101 away from the positioning portion 102, and the threaded structure and the threaded hole form a threaded fit. In actual application, the threaded structure can be used to connect with an external circuit structure. In this way, on the one hand, the stability of the connection between the second die head 305 and the rod-shaped body 101 can be further improved, and on the other hand, it also helps to reduce the possibility of the injection material entering and remaining in the groove of the threaded structure.

[0097] In some embodiments, reference Figure 2 and Figure 3 The fixed mold 302 and the movable mold 301 are arranged to form an opening connected to the cavity 300a, and one end of the second die head 305 away from the first die head 303 extends to the outside of the cavity 300a through the opening, and the first locking assembly 306 is located outside the cavity 300a.

[0098] In this embodiment, a portion of the second die head 305 extends outside the cavity 300 a through the opening, and the first locking assembly 306 is also located outside the cavity 300 a , so that it is convenient for the operator to operate the first locking assembly 306 to apply force to the conductive rod 100 .

[0099] In some embodiments, specifically, referring to Figure 3 and Figure 4 The first locking assembly 306 includes a fixing member 3061 and a threaded rod 3062. The fixing member 3061 is connected to the fixed die 302, and the fixing member 3061 forms a guide threaded hole 3061a, and the guide threaded hole 3061a penetrates the fixing member 3061 along the first direction. The threaded rod 3062 forms a threaded fit with the guide threaded hole 3061a, and one end of the threaded rod 3062 is used to abut against the second die head 305, and the other end forms an operating portion.

[0100] In this embodiment, the threaded rod 3062 and the guide threaded hole 3061a are threadedly matched to apply a force in the first direction to the second die head 305, thereby achieving the effect of applying a force in the first direction to the conductive rod 100. An operating portion 3062a is formed at one end of the threaded rod 3062, so that an operator can manually twist the threaded rod 3062 to make the other end of the threaded rod abut against the second die head 305.

[0101] The specific structural form of the operating part 3062a is not limited, as long as it is suitable for manual operation by the user. As an example, the operating part can be a handle structure, a hand wheel structure, etc.

[0102] The other end of the threaded rod 3062 may directly abut against the second die head 305, or, in some embodiments, the first locking assembly 306 may include an abutment head 3063, and the other end of the threaded rod 3062 abuts against the second die head 305 through the abutment head 3063. The abutment head 3063 may form a threaded fit with the threaded rod 3062.

[0103] In some embodiments, reference Figure 4 The mold 300 also includes a second locking assembly 307, which is disposed on the movable mold 301. The second locking assembly 307 is used to abut against a side surface of the second die head 305 along the second direction. The first direction, the second direction and the height direction of the mold 300 are perpendicular to each other.

[0104] In this embodiment, the first locking assembly 306 and the second locking assembly 307 can apply forces to the second die head 305 (conductive rod 100) in the first direction and the second direction respectively, so that the stability of the position of the conductive rod 100 can be further improved. The specific structure of the second locking assembly 307 is not limited, as long as it can abut against a side surface of the second die head 305 along the second direction.

[0105] In some embodiments, reference Figure 3-Figure 5 The mold 300 further includes a third die head 308 detachably connected to the first core pulling 304 , and the third die head 308 is used to be connected to the bottom end of the vacuum interrupter 200 .

[0106] Additionally or alternatively, in some embodiments, reference Figure 3-Figure 5 The mold 300 also includes a fourth die head 309 , which is detachably disposed in the mold cavity 300 a and located on the top side of the first core pulling 304 . The fourth die head 309 is used to connect with the top of the vacuum interrupter 200 .

[0107] In this embodiment, the specific structural forms of the third die head 308 and the fourth die head 309 can be determined according to the specific structure of the vacuum interrupter 200, and are not limited thereto.

[0108] In some embodiments, specifically, a second installation groove 304b is formed on the top side of the first core pulling 304, the top side of the second installation groove 304b is open, and the third die head 308 is movably disposed in the second installation groove 304b, thereby reducing the difficulty of core pulling.

[0109] In some embodiments, similar to the first die 303, the area of ​​the reference section (the section perpendicular to the height direction of the mold 300) of the third die 308 gradually decreases from the top side to the bottom side of the mold 300, thereby further reducing the difficulty of core pulling.

[0110] In some embodiments, as mentioned above, the first core pulling device 304 forms a protrusion 3041 . In this embodiment, the second installation groove 304 b may be formed by a depression on the top end surface of the protrusion 3041 .

[0111] In some embodiments, reference Figure 3-Figure 5 The mold 300 further includes at least one second core puller 310, which is spaced apart from the first core puller 304. The second core puller 310 is used to form a second installation cavity isolated from the first installation cavity in the pole body.

[0112] It can be understood that the first die head 303 is arranged at the first core pull 304, that is, after the actual injection molding is completed, one end of the conductive rod 100 will be located in the first installation cavity. As mentioned above, when a circuit fault occurs, the insulating pull rod will pull the soft connector to disconnect the vacuum arc chamber 200 and the conductive rod 100, and the insulating pull rod and other electrical components electrically connected to the lower end of the vacuum arc chamber 200 (the end connected to the conductive rod 100) will instantly become low potential, while the electrical components connected to the upper end of the vacuum arc chamber 200 (that is, the incoming line end) will still be at a high potential, and this potential difference may cause partial discharge.

[0113] In this embodiment, by setting a second core pulling 310, a second installation cavity isolated from the first installation cavity can be formed in the pole body. The second installation cavity can be used to accommodate electrical components connected to the upper end of the vacuum arc chamber 200, such as voltage sensors, etc. In this way, after the vacuum arc chamber 200 is disconnected from the conductive rod 100, the high-potential electrical components and the low-potential electrical components will be isolated from each other, thereby reducing the probability of local discharge.

[0114] In this embodiment, the number of the second core pullers 310 can be one or more, and those skilled in the art can specifically set the number of mounting cavities to be formed according to actual needs. In the case where there are more than one second core pullers 310, the plurality of second core pullers 310 can be spaced apart from each other to form a plurality of second mounting cavities isolated from each other, and the shapes of the plurality of second core pullers 310 can be the same or different, and there is no limitation on this.

[0115] In some embodiments, reference Figure 4 and Figure 5The mold 300 further includes a plurality of fifth die heads 311, which are respectively connected to the first core pull 304 and the second core pull 310, and the fifth die heads 311 are used to connect with the terminal cap 201. As mentioned above, the first installation cavity formed by the first core pull 304 and the second installation cavity formed by the second core pull 310 will be isolated from each other, and the electrical components in the second installation cavity may need to be electrically connected to one or more of the inlet terminal, the electrical components in the first installation cavity, and the outlet terminal. For this reason, in this embodiment, the fifth die head 311 is provided on the first core pull 304 and the second core pull 310, and the fifth die head 311 can be connected to the terminal cap 201, and the plurality of terminal caps 201 can be connected by wires, so that after the injection molding is completed, the terminal cap 201 will be able to be electrically connected to the electrical components subsequently installed in the first installation cavity and the second installation cavity, thereby realizing the electrical connection across the installation cavity.

[0116] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0117] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mold, characterized in that: The mold is used to form a pole body of a pole, the pole includes a conductive rod and a vacuum arc extinguishing chamber, the pole body is used to seal the conductive rod and the vacuum arc extinguishing chamber, the conductive rod includes a rod-shaped body and a positioning portion arranged at one end of the rod-shaped body, the positioning portion is used to connect with the vacuum arc extinguishing chamber, and the positioning portion forms a first matching plane, the first matching plane is parallel to the axial direction of the rod-shaped body, The mold comprises: A fixed mold and a movable mold, wherein the fixed mold and the movable mold are detachably connected, and the fixed mold and the movable mold can enclose a cavity that matches the shape of the pole body; A first die head is detachably disposed in the mold cavity, a first abutting plane is formed on the top side of the first die head, and the first abutting plane is used to abut against the first matching plane to position and install the conductive rod in the mold cavity; The first core pulling device is detachably arranged in the mold cavity, the first core pulling device is used to form a first installation cavity on the pole body, the first die head is connected to the first core pulling device, the first core pulling device forms a first installation groove, the top side of the first installation groove is open, and the first die head is movably arranged in the first installation groove.

2. The mold according to claim 1, characterized in that: The positioning portion forms at least one fixing hole for connecting with the vacuum interrupter. The first die head forms at least one connection structure, and the connection structure is used to connect with the fixing hole.

3. The mold according to claim 1, characterized in that: The top surface of the first die head is recessed to form a first positioning groove, and the first abutting plane is formed in the first positioning groove.

4. The mold according to claim 1, characterized in that: The area of ​​the reference cross section of the first die head gradually decreases from the top side to the bottom side of the mold, and the reference cross section is perpendicular to the height direction of the mold.

5. The mold according to claim 1, characterized in that: The conductive rod comprises a positioning protrusion protruding from the first matching plane, and the positioning protrusion is located on a side of the first matching plane close to the rod-shaped body. One side surface of the first die head along the first direction abuts against the first core pulling, and the other side surface is partially recessed to form a second positioning groove, the second positioning groove is matched with the positioning protrusion, and the first direction is perpendicular to the height direction of the mold.

6. The mold according to claim 5, characterized in that: A side surface of the positioning protrusion facing away from the rod-shaped body is formed as a second matching plane, and the second matching plane is perpendicular to the axial direction of the rod-shaped body. The second positioning groove has a second abutting plane, and the second abutting plane is used to abut against the second matching plane.

7. The mold according to claim 1, characterized in that: The first core puller has a protruding portion protruding from the top side of the first die head, and a side surface of the protruding portion along a first direction is used to abut against a side end surface of the positioning portion along the axial direction of the rod-shaped body, and the first direction is perpendicular to the height direction of the mold.

8. The mold according to any one of claims 5 to 7, characterized in that: The mold also includes a first locking assembly, which is connected to the fixed mold and is used to apply a force along the first direction to the conductive rod so that the conductive rod and / or the first die head abuts against the first core puller.

9. The mold according to claim 8, characterized in that: The mold includes a second die head, which is detachably disposed in the mold cavity. The first die head and the second die head are distributed along the first direction. The second die head is used to connect to one end of the rod-shaped body away from the positioning portion, and the first locking assembly is connected to the second die head.

10. The mold according to claim 9, characterized in that: One end surface of the second die head facing the first die head is recessed to form a receiving hole extending along the first direction, and the receiving hole is used to receive the rod-shaped body.

11. The mold according to claim 10, characterized in that: The receiving hole is formed as a threaded hole.

12. The mold according to claim 9, characterized in that: The fixed mold and the movable mold are arranged to form an opening connected to the cavity, one end of the second die head away from the first die head extends to the outside of the cavity through the opening, and the first locking assembly is located outside the cavity.

13. The mold according to claim 12, characterized in that: The first locking assembly comprises: A fixing member connected to the fixed mold, wherein the fixing member forms a guide threaded hole, and the guide threaded hole penetrates the fixing member along the first direction; A threaded rod is threadedly matched with the guide threaded hole, one end of the threaded rod is used to abut against the second die head, and the other end forms an operating part.

14. The mold according to any one of claims 9 to 13, characterized in that: The mold also includes a second locking assembly, which is arranged on the movable mold and is used to abut against a side surface of the second die head along a second direction. The first direction, the second direction and the height direction of the mold are perpendicular to each other.

15. The mold according to claim 1, characterized in that The mold further comprises a third die head, the third die head is detachably connected to the first core pulling, and the third die head is used to be connected to the bottom end of the vacuum interrupter; and / or The mold further comprises a fourth die head, which is detachably disposed in the mold cavity and located at the top side of the first core pulling, and the fourth die head is used to connect with the top end of the vacuum arc extinguishing chamber.

16. The mold according to claim 1, characterized in that The mold further comprises at least one second core pulling device, the second core pulling device is spaced apart from the first core pulling device, and the second core pulling device is used to form a second installation cavity isolated from the first installation cavity in the pole body.

17. The mold according to claim 16, characterized in that The mold further comprises a plurality of fifth die heads respectively connected to the first core puller and the second core puller, and the fifth die heads are used to be connected to the wiring caps.

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