Die

Abstract

The embodiment of the invention provides a mold. The mold comprises a movable mold, a fixed mold and a demolding structure. The fixed mold and the movable mold are detachably connected, and a cavity is defined by the fixed mold and the movable mold. The demolding structure comprises a demolding main body, a first traction assembly and a second traction assembly, and the demolding main body is arranged between the movable mold and the fixed mold and used for fixing the formed glue injection part; the first traction assembly is arranged on the movable mold, and the second traction assembly is arranged on the fixed mold. When the movable mold moves, the first traction assembly is in contact with the demolding main body so as to drive the demolding main body to be separated from the fixed mold through movement; and when the second traction assembly is in contact with the demolding main body, the second traction assembly limits the demolding main body to move, so that the demolding main body is separated from the movable mold. The mold provided by the embodiment of the invention is convenient to demold.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a mold. Background Art

[0002] In the related art, the electromagnetic combined mutual inductor in the pole-mounted circuit breaker usually includes a covering body and a conductive sleeve, a voltage grading network, a current sensor, a voltage sensor, etc. The current sensor includes a coil and a current lead, the coil is arranged around the conductive sleeve, the voltage grading network includes two voltage grading surfaces, and a voltage grading surface is arranged between the coil and any end of the conductive sleeve to avoid interference of the high voltage at both ends of the shielding conductive sleeve on the coil.

[0003] In the related art, the sealed poles of electromagnetic combination transformers are mainly produced by pressure molding process, which is to install the conductive sleeve, voltage equalizing network, current sensor, voltage sensor and other components in the mold through the die head, and then inject epoxy resin into the mold for sealing through APG process, i.e. epoxy resin automatic pressure gel molding technology. However, the molds used in the related art are very inconvenient to demold, and it is difficult to remove the molded injection parts, and there is a problem of low integration. Summary of the invention

[0004] In view of this, the main purpose of the embodiments of the present application is to provide a mold that is easy to demold.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows: The embodiment of the present application provides a mold, which is used to form a plastic injection part, including: Moving model; A fixed mold, wherein the fixed mold and the movable mold are detachably connected and the fixed mold and the movable mold enclose a mold cavity; A demoulding structure, the demoulding structure comprising a demoulding body, a first traction assembly and a second traction assembly, the demoulding body being arranged between the movable mold and the fixed mold to fix the molded plastic injection part; the first traction assembly being arranged on the movable mold, and the second traction assembly being arranged on the fixed mold; When the movable mold moves, the first traction component contacts the demoulding body to drive the demoulding body to separate from the fixed mold through movement; when the second traction component contacts the demoulding body, the second traction component limits the movement of the demoulding body to separate the demoulding body from the movable mold.

[0006] In one embodiment, the demolding body includes a support rod, the first traction assembly includes a demolding movable rod, the first end of the demolding movable rod is arranged on the movable mold, and the second end of the demolding movable rod is detachably connected to the support rod to drive the demolding body to separate from the fixed mold by contacting the support rod.

[0007] In one embodiment, the second end includes a first bent end, and the first bent end hooks the support rod from a side of the support rod away from the movable mold to drive the demolding body to separate from the fixed mold.

[0008] In one embodiment, the demoulding body includes a support rod, the second pulling assembly includes a demoulding static pull rod, and the third end of the demoulding static pull rod is arranged on the fixed mold; the mold has a mold closing state in which the movable mold and the fixed mold are in contact with each other, and a mold opening state in which the movable mold and the fixed mold are separated; When the mold is in the mold closing state, the fourth end of the demolding static pull rod is separated from the demolding body; when the movable mold moves so that the first traction assembly drives the demolding body to separate from the fixed mold, the fourth end of the demolding static pull rod contacts the support rod to limit the movement of the demolding body.

[0009] In one embodiment, the fourth end includes a second bent end, and the second bent end is hooked on the support rod from a side of the support rod facing away from the fixed mold to limit the movement of the demoulding body.

[0010] In one embodiment, the first pulling assembly includes a demoulding movable pull rod, a first end of the demoulding movable pull rod is arranged on the movable mold, a second end of the demoulding movable pull rod is detachably connected to the support rod, and the second end includes a first bent end, and the first bent end hooks the support rod from a side of the support rod away from the movable mold to drive the demoulding body to separate from the fixed mold; The demolding movable pull rod includes a first middle portion located between the first end and the second end; the demolding static pull rod includes a second middle portion located between the third end and the fourth end; one of the first middle portion and the second middle portion is located on the top side of the support rod, and the other is located on the bottom side of the support rod.

[0011] In one embodiment, the demolding movable pull rod and the demolding static pull rod are staggered along a first direction; wherein the separation direction of the movable mold and the fixed mold is a second direction, and the first direction is perpendicular to the second direction and the top and bottom directions respectively.

[0012] In one embodiment, the demoulding structure includes a plurality of the first traction components and a plurality of the second traction components, and the demoulding body includes a demoulding frame and a plurality of support rods, and the support rods are arranged on the demoulding frame; The first traction assembly drives the demoulding body to separate from the fixed mold by contacting the support rods one by one; The second traction assembly is in one-to-one contact with the support rods to limit the movement of the demoulding body.

[0013] In one embodiment, the first pulling component is movably connected to the movable mold, and when the second pulling component contacts the demolding body, the first pulling component moves relative to the movable mold to separate from the demolding body.

[0014] In one embodiment, the first pulling component is rotatably disposed on the movable mold, and the first pulling component is separated from the demoulding body by rotating relative to the movable mold.

[0015] In one embodiment, the demoulding body comprises a demoulding frame having a receiving cavity, the injection molding part is a sensor housing, the sensor housing is a component of an electromagnetic combined mutual inductor, and the receiving cavity is used to receive the electromagnetic combined mutual inductor; The electromagnetic combination transformer includes a current sensor and a conductive sleeve, the conductive sleeve is inserted into the coil of the current sensor, the demoulding body also includes a first fixed die head arranged in the accommodating cavity, and the first fixed die head is used to fix the conductive sleeve; and / or, the electromagnetic combination transformer includes a voltage sensor, the demoulding body also includes a second fixed die head arranged in the accommodating cavity, and the second fixed die head is used to fix the voltage sensor.

[0016] In one embodiment, the demoulding body further includes at least one partition plate, the accommodating cavity includes a plurality of sub-accommodating cavities, each of the sub-accommodating cavities is used to accommodate the electromagnetic combination mutual inductor, and one partition plate is respectively arranged between adjacent sub-accommodating cavities.

[0017] In one embodiment, the mold cavity includes a plurality of mutually separated sub-cavities and at least one slot, each of the sub-cavities is used to form the injection molded part, the sub-cavity matches the shape of the electromagnetic combination transformer, and there is a slot between two adjacent sub-cavities, and the slot is used to install the partition plate.

[0018] In one embodiment, the movable mold and the fixed mold further enclose a mounting groove, and the demolding frame can be detachably installed in the mounting groove; at least one of the movable mold and the fixed mold further has an overflow glue accommodating cavity, and the overflow glue accommodating cavity is located on the top side of the mounting groove.

[0019] The embodiment of the present application provides a mold, which is used to mold a plastic injection part. The fixed mold and the movable mold of the mold are detachably connected, and the fixed mold and the movable mold enclose a cavity. The demolding body of the demolding structure is arranged between the movable mold and the fixed mold to fix the plastic injection part after molding. The first traction component is arranged on the movable mold, and the second traction component is arranged on the fixed mold. When the movable mold moves, the first traction component contacts the demolding body to drive the demolding body to separate from the fixed mold through movement. When the second traction component contacts the demolding body, the second traction component restricts the movement of the demolding body to separate the demolding body from the movable mold. Thus, on the one hand, the first traction component is driven to move by the movable mold, so that the first traction component has a traction effect, and the demolding body can be separated from the fixed mold. On the other hand, as the movable mold continues to move, the first traction component continues to pull the demolding body to move until the second traction component contacts the demolding body, and the second traction component can restrict the demolding body from continuing to move, so that the demolding body is separated from the movable mold. Therefore, with the separation of the movable mold and the fixed mold, the demoulding body can be separated from the movable mold and the fixed mold respectively, and the demoulding body can fix the injection molded parts after molding, so that the injection molded parts can be separated from the movable mold and the fixed mold, so the convenience of demoulding can be greatly improved, and the injection molded parts can be easily removed without manual disassembly, and the mold has a high degree of integration. It can be seen that by demoulding through the demoulding structure, the mold can quickly complete the demoulding operation, reducing the waste of raw materials and the risk of workers' operation, and improving production efficiency and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a mold according to an embodiment of the present application; Figure 2 for Figure 1 A structural diagram of the middle mold from another perspective; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 for Figure 1 Schematic diagram of part of the structure of the middle mold; Figure 5 for Figure 4 The schematic diagram of the structure of the middle mold after some structures are hidden; Figure 6 for Figure 5 A structural diagram of the middle mold from another perspective; Figure 7 for Figure 4 Schematic diagram of the coordination relationship between the demoulding structure and the electromagnetic combination transformer.

[0021] Description of Reference Numerals 10. Moving mold; 10a. Cavity; 10b. Sub-cavity; 10c. Card slot; 10d. Mounting slot; 10e. Overflow glue receiving cavity; 20. Fixed mold; 30. Demolding structure; 31. Demolding body; 311. Support rod; 312. Demolding frame; 312a. Receiving cavity; 312b. Sub-receiving cavity; 313. First fixed die head; 314. Second fixed die head; 315. Partition plate; 32. First traction assembly; 321. Demolding movable pull rod; 322. First end; 323. Second end; 324. First middle part; 33. Second traction assembly; 331. Demolding static pull rod; 332. Third end; 333. Fourth end; 334. Second middle part; 40. Electromagnetic combined mutual inductor; 41. Current sensor; 411. Coil; 42. Conductive sleeve; 43. Voltage sensor. DETAILED DESCRIPTION

[0022] In this application, the orientation or position relationship of "first direction", "second direction" and "top and bottom directions" is based on the attached Figure 1 It should be understood that these directional 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 cannot be understood as limiting the present application.

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and are therefore only used as examples, and the protection scope of the present application cannot be limited by this. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] An embodiment of the present application provides a mold, see Figures 1 to 4 The mold is used to form a plastic injection part, and the mold includes a movable mold 10, a fixed mold 20 and a demoulding structure 30.

[0027] The fixed mold 20 and the movable mold 10 are detachably connected, and the fixed mold 20 and the movable mold 10 enclose a mold cavity 10 a.

[0028] The demoulding structure 30 includes a demoulding body 31, a first traction assembly 32 and a second traction assembly 33. The demoulding body 31 is arranged between the movable mold 10 and the fixed mold 20 to fix the molded injection part. The first traction assembly 32 is arranged on the movable mold 10, and the second traction assembly 33 is arranged on the fixed mold 20.

[0029] When the movable mold 10 moves, the first pulling assembly 32 contacts the demoulding body 31 to drive the demoulding body 31 to separate from the fixed mold 20. When the second pulling assembly 33 contacts the demoulding body 31, the second pulling assembly 33 restricts the movement of the demoulding body 31 to separate the demoulding body 31 from the movable mold 10.

[0030] Among them, the mold can be any mold that can be used to seal and mold a glue-injected part by injecting glue. For example, the glue-injected part is a sensor housing, and the sensor housing is a component of the electromagnetic combination transformer 40 of the pole-mounted circuit breaker. By installing other parts of the electromagnetic combination transformer 40, such as the current sensor 41, the conductive sleeve 42, the voltage sensor 43 and the voltage equalizing network into the cavity 10a, the casting material is injected into the gap between it and the cavity wall of the cavity 10a, and it becomes the sensor housing after solidification. For ease of description, the embodiment of the present application is described by taking the glue-injected part as the sensor housing of the electromagnetic combination transformer 40 as an example.

[0031] Specifically, the mold can not only form the sensor housing by casting and curing the injection molded part, but also enable the sensor housing to be assembled with other structures of the electromagnetic combination mutual inductor 40 .

[0032] The movable mold 10 and the fixed mold 20 of the mold are separable and closable. When the movable mold 10 and the fixed mold 20 are closed, the two can enclose and form a cavity 10a.

[0033] The mold cavity 10a is the cavity inside the mold after the mold is closed, and the shape of the mold cavity 10a matches the shape of the electromagnetic combination transformer 40. That is, after the other structures of the electromagnetic combination transformer 40 are installed in the mold cavity 10a, the casting material is injected into the mold cavity 10a, and the molded plastic part formed after cooling and demolding is the sensor housing.

[0034] The demoulding structure 30 is a structure that can facilitate the ejection of the injection mold relative to the movable mold 10 and the fixed mold 20 .

[0035] After the casting material is injected into the cavity 10 a and solidified, the formed injection piece is connected to the demoulding body 31 .

[0036] The first traction assembly 32 and the second traction assembly 33 can both apply force to the demoulding body 31. Specifically, the first traction assembly 32 can move with the movement of the movable mold 10. Therefore, when the movable mold 10 is separated from the fixed mold 20 by movement, the first traction assembly 32 can be driven to move, and then the demoulding body 31 can be driven to separate from the fixed mold 20.

[0037] As the movable mold 10 continues to move, the first traction component 32 drives the demoulding body 31 to the second traction component 33 to contact the demoulding body 31. The second traction component 33 can prevent the demoulding body 31 from continuing to move with the first traction component 32, but it cannot prevent the movable mold 10 from continuing to move. Therefore, the demoulding body 31 can be separated from the movable mold 10, thereby realizing the separation of the injection mold relative to the movable mold 10 and the fixed mold 20.

[0038] It should be noted that, in some embodiments, when the movable mold 10 and the fixed mold 20 are in the mold closing state, the first pulling component 32 and the demoulding body 31 are in contact, that is, along the direction of separation of the movable mold 10 and the fixed mold 20 (that is, Figure 1 In the second direction of the moving mold 10, the length of the first pulling assembly 32 is the same as the width of the moving mold 10. As a result, the opposite ends of the first pulling assembly 32 can be connected to the moving mold 10 and the demolding body 31 respectively. When the moving mold 10 starts to move, the first pulling assembly 32 can drive the demolding body 31 to move.

[0039] Of course, in other embodiments, when the movable mold 10 and the fixed mold 20 are in the mold-closing state, the first pulling component 32 and the demoulding body 31 are separated, that is, along the direction of separation of the movable mold 10 and the fixed mold 20 (that is, Figure 1 In the second direction of the moving mold 10, the length of the first pulling component 32 is greater than the width of the moving mold 10, one end of the first pulling component 32 is connected to the moving mold 10, and the other end extends to the side of the demoulding body 31 away from the moving mold 10, and is separated from the demoulding body 31 by a set length. Therefore, after the moving mold 10 moves for a period of time, the first pulling component 32 drives the demoulding body 31 to move.

[0040] It should be noted that when the second traction component 33 contacts the demoulding body 31 to limit the movement of the demoulding body 31, the first traction component 32 will be separated from the demoulding body 31, so that the second traction component 33 cannot limit the continued movement of the first traction component 32 and the movable mold 10, thereby enabling the demoulding body 31 and the injection part to be separated relative to the movable mold 10.

[0041] It should be noted that the first pulling component 32 can be separated from the demoulding body 31 in any manner. It can be separated manually by an operator, or a driving structure can be provided to drive the first pulling component 32 to separate from the demoulding body 31, or other methods can be used to achieve automatic separation of the two.

[0042] In the mold of the embodiment of the present application, the fixed mold 20 and the movable mold 10 are detachably connected, and the fixed mold 20 and the movable mold 10 enclose a cavity 10a. The demolding body 31 of the demolding structure 30 is arranged between the movable mold 10 and the fixed mold 20 to fix the injection molded part. The first traction component 32 is arranged on the movable mold 10, and the second traction component 33 is arranged on the fixed mold 20. When the movable mold 10 moves, the first traction component 32 contacts the demolding body 31 to drive the demolding body 31 to separate from the fixed mold 20 through movement. When the second traction component 33 contacts the demolding body 31, the second traction component 33 restricts the movement of the demolding body 31 so that the demolding body 31 separates from the movable mold 10. Therefore, on the one hand, the first traction component 32 is driven to move by the movable mold 10, so that the first traction component 32 has a traction effect, and the demolding body 31 can be separated from the fixed mold 20. On the other hand, as the movable mold 10 continues to move, the first traction component 32 continues to pull the demoulding body 31 to move until the second traction component 33 contacts the demoulding body 31, and the second traction component 33 can limit the demoulding body 31 from continuing to move, so that the demoulding body 31 is separated from the movable mold 10. Therefore, as the movable mold 10 and the fixed mold 20 are separated, the demoulding body 31 can be separated from the movable mold 10 and the fixed mold 20 respectively, and the demoulding body 31 can fix the molded injection part, so that the injection part can be separated from the movable mold 10 and the fixed mold 20, so the convenience of demoulding can be greatly improved, and the injection part can be easily removed without manual disassembly, and the mold has a high degree of integration.

[0043] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 7 The demoulding body 31 includes a support rod 311, and the first traction assembly 32 includes a demoulding movable rod 321. The first end 322 of the demoulding movable rod 321 is arranged on the movable mold 10, and the second end 323 of the demoulding movable rod 321 is detachably connected to the support rod 311, so as to drive the demoulding body 31 to separate from the fixed mold 20 by contacting with the support rod 311. Therefore, the demoulding movable rod 321 interacts with the support rod 311 by contacting with each other, so as to drive the demoulding body 31 and the injection part to separate relative to the fixed mold 20.

[0044] Specifically, the first end 322 and the second end 323 are two opposite ends of the demoulding movable tie rod 321 along the extension direction. The first end 322 is used to connect with the movable mold 10, and the second end 323 is used to contact with the support rod 311.

[0045] It should be noted that the specific connection method between the demoulding movable tie rod 321 and the movable mold 10 is not limited, such as the demoulding movable tie rod 321 and the movable mold 10 are detachably connected, or the demoulding movable tie rod 321 and the movable mold 10 are rotatably connected.

[0046] The specific matching mode between the second end 323 and the support rod 311 is determined according to actual conditions.

[0047] For example, see Figure 2 , Figure 3 and Figure 7 The second end 323 includes a first curved end, which hooks the support rod 311 from the side of the support rod 311 away from the movable mold 10 to drive the demoulding body 31 to separate from the fixed mold 20. Thus, the first traction assembly 32 can pull the demoulding body 31.

[0048] Specifically, the first bent end is a bent end with an arc, the first end 322 of the demolding movable pull rod 321 is connected to the movable mold 10, and the second end 323 extends toward the side close to the fixed mold 20 and passes over the support rod 311 to hook the support rod 311 from the side of the support rod 311 away from the movable mold 10, thereby driving the demolding body 31 to move.

[0049] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 7 The demolding body 31 includes a support rod 311, the second traction assembly 33 includes a demolding static pull rod 331, and the third end 332 of the demolding static pull rod 331 is arranged on the fixed mold 20; the mold has a mold closing state in which the movable mold 10 and the fixed mold 20 are in contact with each other, and a mold opening state in which the movable mold 10 and the fixed mold 20 are separated.

[0050] When the mold is in the mold-closing state, the fourth end 333 of the demoulding static tie rod 331 is separated from the demoulding body 31; when the movable mold 10 moves so that the first traction assembly 32 drives the demoulding body 31 to separate from the fixed mold 20, the fourth end 333 of the demoulding static tie rod 331 contacts the support rod 311 to limit the movement of the demoulding body 31. Therefore, the demoulding static tie rod 331 applies a blocking force to the support rod 311, so that the demoulding body 31 can continue to move with the movable mold 10.

[0051] Specifically, the third end 332 and the fourth end 333 are two opposite ends of the demoulding static tie rod 331 along the extension direction. The third end 332 is used to connect with the fixed mold 20, and the fourth end 333 is used to contact with the support rod 311.

[0052] The specific connection method between the demoulding static tie rod 331 and the fixed mold 20 is not limited, for example, the demoulding static tie rod 331 and the fixed mold 20 are detachably connected, or fixedly connected.

[0053] It should be noted that when the mold is in the closed mold state, the fourth end 333 of the demolding static pull rod 331 needs to be separated from the demolding body 31, thereby preventing the fourth end 333 of the demolding static pull rod 331 from restricting the movement of the demolding body 31 when the first traction component 32 has not yet driven the demolding body 31 to separate from the fixed mold 20.

[0054] In addition, the specific matching method between the fourth end 333 and the support rod 311 is determined according to actual conditions.

[0055] For example, see Figure 2 , Figure 3 and Figure 7 The fourth end 333 includes a second curved end, and the second curved end hooks the support rod 311 from the side of the support rod 311 away from the fixed mold 20 to limit the movement of the demoulding body 31. Thus, it is convenient for the second traction assembly 33 to limit the continued movement of the demoulding body 31.

[0056] Specifically, the second bent end is a bent end with an arc, the third end 332 of the demolding static pull rod 331 is connected to the fixed mold 20, and the fourth end 333 extends toward the side close to the movable mold 10 and passes over the support rod 311 to hook the support rod 311 from the side of the support rod 311 away from the fixed mold 20, thereby limiting the continued movement of the demolding body 31.

[0057] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 7 The first traction assembly 32 includes a demoulding movable pull rod 321, a first end 322 of the demoulding movable pull rod 321 is set on the movable mold 10, and the second end 323 of the demoulding movable pull rod 321 is detachably connected to the support rod 311. The second end 323 includes a first bent end, and the first bent end hooks the support rod 311 from the side of the support rod 311 away from the movable mold 10 to drive the demoulding body 31 to separate from the fixed mold 20.

[0058] The demoulding movable tie rod 321 includes a first middle portion 324 located between the first end 322 and the second end 323; the demoulding static tie rod 331 includes a second middle portion 334 located between the third end 332 and the fourth end 333; one of the first middle portion 324 and the second middle portion 334 is located on the top side of the support rod 311, and the other is located on the bottom side of the support rod 311. Thus, the risk of the support rod 311 coming out of both the first curved end and the second curved end can be reduced, thereby reducing the possibility of problems with the mold.

[0059] It should be noted that the end (second end 323) of the demoulding movable tie rod 321 that is used to contact the support rod 311 is a bent end, and the end (fourth end 333) of the demoulding static tie rod 331 that is used to contact the support rod 311 is also a bent end, and one of the demoulding movable tie rod 321 and the demoulding static tie rod 331 extends from the top side to hook the support rod 311, and the other extends from the bottom side to hook the support rod 311. In this way, when the demoulding movable tie rod 321 and the demoulding static tie rod 331 are on the same side, the problem of both bent ends of the support rod 311 being disengaged can be prevented. Therefore, the reliability of mold demoulding can be greatly improved.

[0060] It can be understood that the first end 322 , the first middle portion 324 and the second end 323 are structures of different regions of the demolding movable pull rod 321 , which can be integrally formed or separately formed.

[0061] The third end 332 , the second middle portion 334 and the fourth end 333 are structures of different regions of the demoulding static tie rod 331 , which may be integrally formed or separately formed.

[0062] Furthermore, the demoulding movable rod 321 may extend from the top side to hook the support rod 311, and the demoulding static rod 331 may extend from the bottom side to hook the support rod 311. Alternatively, the demoulding movable rod 321 may extend from the bottom side to hook the support rod 311, and the demoulding static rod 331 may extend from the top side to hook the support rod 311.

[0063] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 7 , the demoulding movable tie rod 321 and the demoulding static tie rod 331 are staggered along the first direction. The separation direction of the movable mold 10 and the fixed mold 20 is the second direction, and the first direction is perpendicular to the second direction and the top and bottom directions respectively. In other words, the demoulding movable tie rod 321 and the demoulding static tie rod 331 are not located on the same vertical plane, but are relatively staggered, thereby reducing the risk of interference between the demoulding movable tie rod 321 and the demoulding static tie rod 331, and improving the reliability of the mold.

[0064] In one embodiment, please refer to Figures 4 to 7 The demoulding structure 30 includes a plurality of first traction assemblies 32 and a plurality of second traction assemblies 33 . The demoulding body 31 includes a demoulding frame 312 and a plurality of support rods 311 . The support rods 311 are arranged on the demoulding frame 312 .

[0065] The first pulling assembly 32 contacts the supporting rods 311 in a one-to-one correspondence to drive the demoulding body 31 to separate from the fixed mold 20 .

[0066] The second traction assembly 33 contacts the support rod 311 one by one to limit the movement of the demoulding body 31. Thus, the stability of the first traction assembly 32 driving the demoulding body 31 to move can be greatly improved, and the reliability of the second traction assembly 33 limiting the movement of the demoulding body 31 can be greatly improved.

[0067] It is understandable that the number of support rods 311 , first traction components 32 and second traction components 33 are the same, and the three correspond to each other, and each support rod 311 corresponds to a first traction component 32 and a second traction component 33 .

[0068] For example, the demoulding structure 30 includes four first traction components 32 and four second traction components 33, the demoulding body 31 includes a demoulding frame 312 and four support rods 311, two support rods 311 are respectively arranged on opposite sides of the demoulding frame 312 along the first direction, and the support rods 311 located on the same side of the demoulding frame 312 are arranged at intervals along the top and bottom directions. The first traction components 32 and the second traction components 33 are arranged at each support rod 311 in a one-to-one correspondence.

[0069] In one embodiment, please refer to Figure 2 and Figure 3 , the first pulling assembly 32 is movably connected to the movable mold 10, and when the second pulling assembly 33 contacts the demoulding body 31, the first pulling assembly 32 moves relative to the movable mold 10 to separate from the demoulding body 31. Thus, the first pulling assembly 32 will not continue to drive the demoulding body 31 to move, and the second pulling assembly 33 will not hinder the movable mold 10 from continuing to move.

[0070] It should be noted that the specific manner in which the first traction assembly 32 is movably connected to the movable mold 10 can be set according to actual conditions.

[0071] For example, see Figure 2 and Figure 3 The first pulling assembly 32 is rotatably disposed on the movable mold 10, and the first pulling assembly 32 is separated from the demoulding body 31 by rotating relative to the movable mold 10. Thus, the convenience of separating the first pulling assembly 32 from the demoulding body 31 can be improved.

[0072] In one embodiment, please refer to Figure 7 The demoulding body 31 includes a demoulding frame 312 having a receiving cavity 312 a . The injection molded part is a sensor housing. The sensor housing is a component of the electromagnetic combination transformer 40 . The receiving cavity 312 a is used to receive the electromagnetic combination transformer 40 .

[0073] The electromagnetic combined mutual inductor 40 includes a current sensor 41 and a conductive sleeve 42, the conductive sleeve 42 is inserted into the coil 411 of the current sensor 41, and the demoulding body 31 also includes a first fixed die head 313 arranged in the accommodating cavity 312a, and the first fixed die head 313 is used to fix the conductive sleeve 42. Thus, the current sensor 41 and the conductive sleeve 42 can be better fixed in the demoulding body 31 and the cavity 10a, which can improve the stability of the mold casting process and the demoulding process.

[0074] Specifically, the first fixed die head 313 is installed in any manner within the accommodating cavity 312a.

[0075] For example, a part of the cavity wall of the accommodating cavity 312a is recessed to form a first installation space, and the first fixed die head 313 is installed in the first installation space, thereby improving the installation stability between the first fixed die head 313 and the demoulding frame 312.

[0076] The fixing connection method between the first fixed die head 313 and the conductive sleeve 42 is not limited.

[0077] For example, a first fixed die head 313 is respectively disposed at both ends of the conductive sleeve 42 along the extension direction, and the end of the first fixed die head 313 extends into the conductive sleeve 42 to be clamped and fixed with the conductive sleeve 42 .

[0078] In one embodiment, please refer to Figure 7 The demoulding body 31 includes a demoulding frame 312 having a receiving cavity 312 a . The injection molded part is a sensor housing. The sensor housing is a component of the electromagnetic combination transformer 40 . The receiving cavity 312 a is used to receive the electromagnetic combination transformer 40 .

[0079] The electromagnetic combined mutual inductor 40 includes a voltage sensor 43 , and the demoulding body 31 also includes a second fixed die head 314 disposed in the accommodating cavity 312 a , and the second fixed die head 314 is used to fix the voltage sensor 43 .

[0080] Specifically, the second fixed die head 314 is installed in any manner within the accommodating cavity 312a.

[0081] For example, a part of the cavity wall of the accommodating cavity 312a is recessed to form a second installation space, and the second fixed die head 314 is installed in the second installation space. Thus, the installation stability between the second fixed die head 314 and the voltage sensor 43 can be improved.

[0082] The fixing connection method between the second fixed die head 314 and the voltage sensor 43 is not limited.

[0083] For example, the second fixed die head 314 has an interface connected to the voltage sensor 43, and the end of the voltage sensor 43 extends into the interface.

[0084] In one embodiment, please refer to Figure 7 The demoulding body 31 further includes at least one partition plate 315, the accommodating cavity 312a includes a plurality of sub-accommodating cavities 312b, each of which is used to accommodate the electromagnetic combination mutual inductor 40, and a partition plate 315 is provided between adjacent sub-accommodating cavities 312b. Thus, multiple injection parts can be molded simultaneously by the mold, which can improve the molding efficiency.

[0085] Specifically, each sub-accommodating cavity 312b can accommodate a formed electromagnetic combination mutual inductor 40, and adjacent sub-accommodating cavities 312b are separated by partition plates 315, thereby preventing adjacent formed electromagnetic combination mutual inductors 40 from being connected together.

[0086] In one embodiment, please refer to Figures 4 to 6 The mold cavity 10a includes a plurality of mutually separated sub-cavities 10b and at least one slot 10c. Each sub-cavity 10b is used for molding a plastic injection part. The sub-cavity 10b matches the shape of the electromagnetic combination transformer 40. There is a slot 10c between two adjacent sub-cavities 10b. The slot 10c is used to install the partition plate 315.

[0087] Specifically, each sub-cavity 10 b matches the shape of an electromagnetic combined mutual inductor 40 , and adjacent sub-cavities 10 b are separated by a partition plate 315 .

[0088] At the same time, by providing the card slot 10 c , the partition plate 315 can be easily disassembled and assembled, and the installation stability of the partition plate 315 can be improved.

[0089] In addition, the mold design is adopted to integrate multiple key components, and the integration of the mold is improved through the design of the cavity 10a of the movable mold 10 and the fixed mold and the matching design of the slot 10c, making the mold structure more compact and reducing space occupancy.

[0090] In one embodiment, please refer to Figure 1 , Figure 5 and Figure 6 The movable mold 10 and the fixed mold 20 also enclose a mounting groove 10d, and the demoulding frame 312 can be detachably mounted in the mounting groove 10d. At least one of the movable mold 10 and the fixed mold 20 also has an overflowing glue receiving cavity 10e, and the overflowing glue receiving cavity 10e is located on the top side of the mounting groove 10d.

[0091] Specifically, the demoulding frame 312 can be detachably installed in the installation groove 10d, which can facilitate the disassembly and assembly of the demoulding frame 312 and improve the stability of the demoulding frame 312 during the casting process.

[0092] Only the movable mold 10 may have the overflow glue accommodating cavity 10e, only the fixed mold 20 may have the overflow glue accommodating cavity 10e, or both the movable mold 10 and the fixed mold 20 may have the overflow glue accommodating cavity 10e.

[0093] The overflow glue receiving cavity 10e is located at the top side of the mounting groove 10d, thereby facilitating the overflow of the casting material into the overflow glue receiving cavity 10e after the cavity 10a is fully filled with the casting material.

[0094] In a specific embodiment, the movable mold 10 includes a movable mold 10 back plate and a movable mold 10 mold plate, which is installed on the movable mold 10 back plate. The fixed mold 20 includes a fixed mold 20 back plate and a fixed mold 20 mold plate, which is installed on the fixed mold 20 back plate. The fixed mold 20 mold plate and the movable mold 10 mold plate enclose a cavity 10a. The first traction component 32 is arranged on the movable mold 10 back plate, and the second traction component 33 is arranged on the fixed mold 20 back plate.

[0095] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" 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 does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. 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.

[0096] 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 are included in the protection scope of the present application.

Claims

1. A mold, characterized in that: The mold is used to form a plastic injection part, including: Moving model; A fixed mold, wherein the fixed mold and the movable mold are detachably connected and the fixed mold and the movable mold enclose a mold cavity; A demoulding structure, the demoulding structure comprising a demoulding body, a first traction assembly and a second traction assembly, the demoulding body being arranged between the movable mold and the fixed mold to fix the molded plastic injection part; the first traction assembly being arranged on the movable mold, and the second traction assembly being arranged on the fixed mold; When the movable mold moves, the first traction component contacts the demoulding body to drive the demoulding body to separate from the fixed mold through movement; when the second traction component contacts the demoulding body, the second traction component restricts the movement of the demoulding body to separate the demoulding body from the movable mold.

2. The mold according to claim 1, characterized in that: The demoulding body includes a support rod, and the first traction assembly includes a demoulding movable rod. The first end of the demoulding movable rod is arranged on the movable mold, and the second end of the demoulding movable rod is detachably connected to the support rod to drive the demoulding body to separate from the fixed mold by contacting the support rod.

3. The mold according to claim 2, characterized in that: The second end includes a first bent end, and the first bent end hooks the support rod from a side of the support rod away from the movable mold to drive the demoulding body to separate from the fixed mold.

4. The mold according to claim 1, characterized in that: The demoulding body includes a support rod, the second pulling assembly includes a demoulding static pull rod, and the third end of the demoulding static pull rod is arranged on the fixed mold; the mold has a mold closing state in which the movable mold and the fixed mold are in contact with each other, and a mold opening state in which the movable mold and the fixed mold are separated; When the mold is in the mold closing state, the fourth end of the demolding static pull rod is separated from the demolding body; when the movable mold moves so that the first traction assembly drives the demolding body to separate from the fixed mold, the fourth end of the demolding static pull rod contacts the support rod to limit the movement of the demolding body.

5. The mold according to claim 4, characterized in that: The fourth end includes a second bent end, and the second bent end is hooked on the support rod from a side of the support rod away from the fixed mold to limit the movement of the demoulding body.

6. The mold according to claim 5, characterized in that: The first pulling assembly comprises a demoulding movable rod, wherein a first end of the demoulding movable rod is arranged on the movable mold, a second end of the demoulding movable rod is detachably connected to the support rod, and the second end comprises a first bent end, and the first bent end hooks the support rod from a side of the support rod away from the movable mold to drive the demoulding body to separate from the fixed mold; The demolding movable pull rod includes a first middle portion located between the first end and the second end; the demolding static pull rod includes a second middle portion located between the third end and the fourth end; one of the first middle portion and the second middle portion is located on the top side of the support rod, and the other is located on the bottom side of the support rod.

7. The mold according to claim 6, characterized in that: The demoulding movable pull rod and the demoulding static pull rod are staggered along a first direction; wherein the separation direction of the movable mold and the fixed mold is a second direction, and the first direction is perpendicular to the second direction and the top and bottom directions respectively.

8. The mold according to claim 1, characterized in that: The demoulding structure includes a plurality of the first traction components and a plurality of the second traction components, and the demoulding body includes a demoulding frame and a plurality of support rods, and the support rods are arranged on the demoulding frame; The first traction assembly drives the demoulding body to separate from the fixed mold by contacting the support rods one by one; The second traction assembly is in one-to-one contact with the support rods to limit the movement of the demoulding body.

9. The mold according to any one of claims 1 to 8, characterized in that: The first pulling component is movably connected to the movable mold. When the second pulling component contacts the demoulding body, the first pulling component moves relative to the movable mold to separate from the demoulding body.

10. The mold according to claim 9, characterized in that: The first pulling component is rotatably disposed on the movable mold, and the first pulling component is separated from the demoulding body by rotating relative to the movable mold.

11. The mold according to any one of claims 1 to 7, characterized in that: The demoulding body comprises a demoulding frame having a receiving cavity, the injection part is a sensor housing, the sensor housing is a component of an electromagnetic combined mutual inductor, and the receiving cavity is used to receive the electromagnetic combined mutual inductor; The electromagnetic combined mutual inductor comprises a current sensor and a conductive sleeve, wherein the conductive sleeve is inserted into the coil of the current sensor, and the demoulding body further comprises a first fixed die head arranged in the accommodating cavity, wherein the first fixed die head is used to fix the conductive sleeve; and / or, The electromagnetic combined mutual inductor includes a voltage sensor, and the demoulding body also includes a second fixed die head arranged in the accommodating cavity, and the second fixed die head is used to fix the voltage sensor.

12. The mold according to claim 11, characterized in that: The demoulding body further comprises at least one partition plate, the accommodating cavity comprises a plurality of sub-accommodating cavities, each of the sub-accommodating cavities is used to accommodate the electromagnetic combination mutual inductor respectively, and one partition plate is respectively arranged between adjacent sub-accommodating cavities.

13. The mold according to claim 12, characterized in that: The mold cavity includes a plurality of mutually separated sub-cavities and at least one slot, each of the sub-cavities is used to form the injection molding part, the sub-cavity matches the shape of the electromagnetic combination transformer, and there is a slot between two adjacent sub-cavities, and the slot is used to install the partition plate.

14. The mold according to claim 11, characterized in that The movable mold and the fixed mold also enclose a mounting groove, and the demoulding frame can be detachably mounted in the mounting groove; at least one of the movable mold and the fixed mold also has an overflow glue accommodating cavity, and the overflow glue accommodating cavity is located on the top side of the mounting groove.

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