Injection mold core and mold for IGBT (Insulated Gate Bipolar Translator) structural component

Abstract

The utility model discloses an injection mold core and a mold of an IGBT (Insulated Gate Bipolar Translator) structural member, the injection mold core comprises a mold core body, the mold core body is provided with a plurality of needle holes, some of the needle holes are used for detachably inserting blocking needles, the blocking needles can block the needle holes inserted with the blocking needles, and the other needle holes are used for detachably inserting metal inserting needles of the IGBT structural member. According to the injection mold core, the plugging positions of the plugging pins can be adjusted according to different metal pin positions on different IGBT structural parts, IGBT structural part products with any metal pin positions can be produced through injection molding, the applicability of the injection mold core is improved, and the production efficiency is improved. The injection mold comprises the mold body and the at least two mold cores, the mold cores are detachably connected to the mold body, and after injection molding of a previous product is completed, the next injection mold core where pin insertion is completed can be placed into the mold body for injection molding, so that continuous injection molding work of the injection mold can be achieved; and the production efficiency and the qualified rate can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT structural parts, in particular to an injection mold core and a mold for an IGBT structural part. Background Art

[0002] IGBT, also known as insulated gate bipolar transistor, has the advantages of high input impedance and low conduction voltage drop, and is widely used in the fields of inverters and traction drives. One of the structural parts of IGBT is a shell with metal pins, which is generally produced by injection molding. During injection molding, the metal pins need to be pre-inserted into the reserved holes of the mold core. After the mold is closed for injection molding, the metal pins will be injection molded together with the plastic to form an IGBT shell with metal pins. In the injection mold of the IGBT structural parts in the prior art, the position of the reserved holes on the mold core corresponds to the position of the metal pins on the target IGBT structural parts. One mold core can only correspond to a product with one metal pin position, and the applicability is low. During injection molding, after each mold opening, the metal pins need to be inserted into the reserved holes in turn before the mold is closed for injection molding, which not only reduces production efficiency, but also has the risk of missing metal pins, resulting in a reduced pass rate and a great waste of production capacity. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an injection mold core for an IGBT structural component, which can produce products with any metal pin position, increase the applicability of the injection mold core, and improve production efficiency.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is as follows: an injection mold core of an IGBT structural component, including a mold core body, on which a plurality of pinholes are opened, some of which are used for detachable plug-in blocking pins, and the blocking pins can block the pinholes to be plugged in, and the other pinholes are used for detachable plug-in metal pins of the IGBT structural component.

[0005] Compared with the prior art, the beneficial effect of the utility model is that the injection mold core is provided with a plurality of pinholes on the mold core body, and the plurality of pinholes can be inserted with blocking pins or metal pins of IGBT structural parts according to different product requirements. When the required IGBT structural parts are injection molded, the pinholes that do not need to insert metal pins can be blocked with blocking pins to prevent plastic leakage, and the other pinholes can be inserted with metal pins to facilitate the subsequent injection molding of IGBT structural parts with metal pins. Therefore, the injection mold core can adjust the plugging position of the blocking pin according to the different metal pin positions on different IGBT structural parts, and reserve the pinholes corresponding to the metal pin positions on the target IGBT structural parts to insert metal pins and wait for subsequent welding, so as to realize the production of products with any metal pin positions, increase the applicability of the injection mold core, reduce production costs, and improve production efficiency.

[0006] In the injection mold core of the IGBT structural component, the plurality of pinholes are distributed along the circumference of the mold core body.

[0007] The injection mold core of the above-mentioned IGBT structural component, the needle blocking part includes an interconnected plug-in part and an extending part, the plug-in part can be detachably inserted into the pinhole, the extending part is located outside the pinhole, the outer diameter of the extending part is larger than the inner diameter of the pinhole, and the end of the extending part is fitted and connected to the outer edge of the end of the pinhole.

[0008] The utility model also provides an injection mold for an IGBT structural component, including a mold body and at least two of the above-mentioned injection mold cores, and the injection mold cores are detachably connected to the mold body. The injection mold adopts the above-mentioned injection mold core, so the injection mold has at least all the beneficial effects that the above-mentioned injection mold core can bring. In addition, when an injection mold core is placed in the mold body for injection molding, the metal pin of the target IGBT structural component can be plugged into the next injection mold core. After the previous product is completed, the next injection mold core with the completed pin can be placed in the mold body for injection molding, thereby realizing continuous injection molding of the injection mold, which can not only further improve the production efficiency, but also reduce the risk of missing the metal pin and improve the product qualification rate.

[0009] The injection mold of the above-mentioned IGBT structural component has an installation groove on the mold body, a first positioning piece is arranged in the installation groove, a second positioning piece is arranged on the core body, the core body is detachably connected to the installation groove, and the second positioning piece is positioned and connected to the first positioning piece.

[0010] In the above-mentioned injection mold of the IGBT structural component, one of the first positioning member and the second positioning member is a positioning column, and the other is a positioning hole.

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the injection mold core of the first embodiment of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the mold body of the injection mold of the second embodiment of the utility model.

[0014] Description of the accompanying drawings: 100 core body, 110 needle hole, 120 second positioning piece, 200 needle blocking, 210 plug-in portion, 220 extension portion, 300 mold body, 310 mounting groove, 311 first positioning piece. DETAILED DESCRIPTION

[0015] The embodiments of the present utility model are described in detail below:

[0016] Embodiment 1

[0017] Reference Figure 1 , Embodiment 1 of the utility model provides an injection mold core of an IGBT structural component, including a core body 100, on which a plurality of pinholes 110 are provided, and the plurality of pinholes 110 are distributed along the circumference of the core body 100, and some of the pinholes 110 are used for detachably plugging in plugging pins 200, and the plugging pins 200 can plug the plugged pinholes 110, and other pinholes 110 are used for detachably plugging in metal pins of the IGBT structural component. The injection mold core has a plurality of pinholes 110 provided on the core body 100, and the plurality of pinholes 110 can be inserted with the plugging pins 200 or the metal pins of the IGBT structural component according to different product requirements. When the required IGBT structural component is injection molded, the pinholes 110 that do not need to be inserted with the metal pins can be plugged with the plugging pins 200 to prevent plastic leakage, and the other pinholes 110 can be inserted with the metal pins, so as to facilitate the subsequent injection molding of the IGBT structural component with the metal pins. Therefore, the injection mold core can adjust the plugging position of the plugging pin 200 according to the different metal pin positions on different IGBT structural parts, and reserve the pinhole 110 corresponding to the metal pin position on the target IGBT structural part to insert the metal pin and wait for subsequent welding. It can realize the production of products with any metal pin position, increase the applicability of the injection mold core, reduce production costs, and improve production efficiency.

[0018] Furthermore, if Figure 1As shown, there is no need to insert a metal pin, that is, the pinhole 110 corresponding to the position without a metal pin on the target IGBT structure has been plugged and blocked with a plugging pin 200, and the position of the remaining pinhole 110 corresponds to the position of the metal pin on the target IGBT structure. After the metal pin is inserted, it can be placed in the injection mold for injection molding. Figure 1 As shown in the partially enlarged view, the blocking needle 200 includes a plug-in portion 210 and an extension portion 220 that are interconnected. The plug-in portion 210 can be detachably plugged into the needle hole 110, and the outer diameter of the plug-in portion 210 matches the inner diameter of the needle hole 110. The plug-in portion 210 and the needle hole 110 are interference fit to achieve sealing. The extension portion 220 is located outside the needle hole 110, and the outer diameter of the extension portion 220 is larger than the inner diameter of the needle hole 110, and the end of the extension portion 220 is in contact with the outer edge of the end of the needle hole 110 to further improve the sealing effect, and can facilitate clamping the extension portion 220 to apply force to remove the blocking needle 200 from the needle hole 110, thereby adjusting the position of the blocking needle 200.

[0019] Embodiment 2

[0020] Reference Figure 1 and Figure 2 Embodiment 2 of the utility model provides an injection mold for an IGBT structural component, including a mold body 300 and at least two of the above-mentioned injection mold cores, the mold body 300 is provided with an installation groove 310, the installation groove 310 is provided with a first positioning member 311, the mold core body 100 is provided with a second positioning member 120, the mold core body 100 is detachably connected to the installation groove 310, and the second positioning member 120 is positioned and connected to the first positioning member 311. The present injection mold adopts the above-mentioned injection mold core, so the injection mold has at least all the beneficial effects that the above-mentioned injection mold core can bring. In addition, when an injection mold core is placed in the mold body 300 for injection molding, the metal pin of the target IGBT structural component can be plugged in on the next injection mold core. After the previous product is completed, the next injection mold core with the completed pin can be placed in the mold body 300 for injection molding. By switching injection molding through multiple cores, continuous injection molding of the injection mold can be achieved, which can not only further improve the production efficiency, but also reduce the risk of missing metal pins and improve the qualified rate of the product. Further, in the first positioning member 311 and the second positioning member 120, one is a positioning column and the other is a positioning hole. For example, in this embodiment, the first positioning member 311 is a positioning column and the second positioning member 120 is a positioning hole. Of course, the first positioning member 311 and the second positioning member 120 can also be other positioning matching structures.

[0021] It should be noted that in the description of the present invention, if there are any orientation descriptions, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are all based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An injection mold core for an IGBT structural component, characterized in that: The invention comprises a mold core body (100), wherein a plurality of pinholes (110) are provided on the mold core body (100), some of the pinholes (110) are used for detachably plugging in plugging pins (200), wherein the plugging pins (200) can plug the plugged in pinholes (110), and other pinholes (110) are used for detachably plugging in metal plug pins of IGBT structural components.

2. The injection mold core of the IGBT structural component according to claim 1, characterized in that: The plurality of pinholes (110) are distributed along the circumference of the mold core body (100).

3. The injection mold core of the IGBT structural component according to claim 1, characterized in that: The needle blocking device (200) comprises an inserting portion (210) and an extending portion (220) which are connected to each other, wherein the inserting portion (210) is detachably inserted into the needle hole (110), and the extending portion (220) is located outside the needle hole (110), and the outer diameter of the extending portion (220) is greater than the inner diameter of the needle hole (110), and the end of the extending portion (220) is in close contact with the outer edge of the end of the needle hole (110).

4. An injection mold for an IGBT structural component, characterized in that: It comprises a mold body (300) and at least two injection mold cores according to any one of claims 1 to 3, wherein the injection mold cores are detachably connected to the mold body (300).

5. The injection mold for the IGBT structural component according to claim 4, characterized in that: The mold body (300) is provided with a mounting groove (310), and a first positioning member (311) is provided in the mounting groove (310). The core body (100) is provided with a second positioning member (120), and the core body (100) is detachably connected to the mounting groove (310), and the second positioning member (120) is positioned and connected to the first positioning member (311).

6. The injection mold for the IGBT structural component according to claim 5, characterized in that: One of the first positioning member (311) and the second positioning member (120) is a positioning column, and the other is a positioning hole.

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