Transmission frame suitable for frameless power module
By designing a transmission frame suitable for frameless power modules, the problems of low production efficiency and wear were solved, achieving efficient positioning and wear prevention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-03
AI Technical Summary
Existing technologies cannot quickly capture frameless power modules, resulting in low production efficiency and easy wear and tear on the products during transmission, affecting product quality.
Design a transmission frame suitable for frameless power modules, including a frame body and a positioning component. The positioning component fixes the frameless power module, ensuring positioning accuracy and preventing wear within automated equipment.
It improves the production efficiency and product quality of frameless power modules, prevents wear during transmission, and ensures positioning accuracy.
Smart Images
Figure CN223968189U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of semiconductor module technology, specifically relating to a transmission frame suitable for frameless power modules. Background Technology
[0002] When producing frameless power modules, conventional semiconductor molding equipment cannot quickly pick up the products to be packaged. Workers typically manually place the products directly into the equipment for packaging, and trays are used for storage and transport. However, these trays cannot be used in existing automated equipment, making it difficult to position and move the frameless power modules within the equipment. This increases the cost of modifying the equipment for frameless power module production. Furthermore, molding equipment usually packages four or more products at a time, and transporting each product individually is time-consuming and inefficient. Additionally, during automated transport, the products sliding directly on the guide rails can cause wear on the heat dissipation ceramic plates, affecting product functionality. Utility Model Content
[0003] In view of this, in order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a transmission frame suitable for frameless power modules, which is beneficial to improving the positioning accuracy of the product (frameless power module), preventing wear during product transmission, and thus effectively improving product quality and production efficiency.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A transmission frame suitable for frameless power modules includes a frame body and positioning components fixedly mounted on the frame body. At least two first through slots are spaced apart on the frame body. The number of positioning components equals the number of first through slots. The positioning components are fixedly mounted on the edges of the first through slots. The frameless power module is located above the first through slots and within the range of the positioning components. The positioning components are used for positioning and fixing the frameless power module. In some embodiments of this invention, the arrangement of the first through slots on the frame body is designed according to the product arrangement within the mold of the encapsulation equipment, facilitating the transport accuracy and efficiency of the subsequent clamping device.
[0006] By setting up a transfer frame, products can be placed on it in advance. This transfer frame can be used for transfer within existing automated encapsulation equipment. During transfer, the bottom surface of the frame slides on guide rails, effectively preventing wear and tear on the products. Multiple products can be placed on a single transfer frame simultaneously, and multiple transfer frames can be transferred uniformly within the automated encapsulation equipment, thereby improving work efficiency. Furthermore, the positioning components ensure the fixed position of the products to be packaged on the transfer frame, guaranteeing accurate product positioning.
[0007] According to some preferred embodiments of the present invention, the first through slot extends through the thickness direction of the frame body, and each first through slot includes a first slot portion and a second slot portion located at the apex of the first slot portion. All second slot portions in each first through slot are connected to the first slot portion. In some embodiments of the present invention, the first slot portion is provided to ensure that when the transmission frame containing the frameless power module enters the loading unit of the automated encapsulation equipment, the push rod in the equipment can push the frameless power module out through the first slot portion to detach it from the transmission frame, so that the clamping device can grasp the lifted frameless power module to be encapsulated.
[0008] According to some preferred embodiments of the present invention, the frameless power module includes a heat sink. When the frameless power module is placed on the first through slot, the top surface of the first slot is in contact with the bottom surface of the heat sink, and the area of the bottom surface of the heat sink is greater than the area of the top surface of the first slot.
[0009] According to some preferred embodiments of the present invention, both ends of the frame body are provided with a second through groove extending through its thickness direction. The second through groove is used for the clamping device to clamp and transfer the frame. The frame body is also provided with a third through groove extending through its thickness direction. The third through groove is located between two adjacent first through grooves. The top and bottom of the frame body are also provided with a plurality of fourth through grooves extending through its thickness direction at intervals.
[0010] According to some preferred embodiments of the present invention, the total area of all the first grooves accounts for a percentage of the area of the frame body greater than or equal to 10%, and the total area of the first through groove, second through groove, third through groove, and fourth through groove accounts for a percentage of the area of the frame body less than or equal to 75%. In some embodiments of the present invention, the second groove, second through groove, third through groove, and fourth through groove are provided to reduce the overall weight of the frame body and facilitate its transportation. At the same time, in order to ensure the strength of the entire frame body, the total area of the first through groove, second through groove, third through groove, and fourth through groove accounts for a percentage of the area of the frame body less than or equal to 75%.
[0011] According to some preferred embodiments of the present invention, the shape of the first slot is the same as the shape of the heat sink, and when the frameless power module is placed on the first through slot, the center of the heat sink and the center of the first slot are located in the same vertical direction.
[0012] According to some preferred embodiments of the present invention, the frame body includes a plurality of extension blocks, the extension blocks being used to support a frameless power module; the first slot is rectangular, and the extension blocks are provided between two adjacent second slots along the length direction and / or width direction of the first slot, the orthographic projection of the extension block on the horizontal plane being located within the area enclosed by the orthographic projections of the corresponding two second slots on the horizontal plane.
[0013] According to some preferred embodiments of the present invention, each positioning component includes a plurality of positioning pins, and one or more positioning pins are fixedly disposed on each extension block, the positioning pins being perpendicular to the extension block.
[0014] According to some preferred embodiments of the present invention, the distance between the top of the positioning pin and the top surface of the extension block is greater than the thickness of the heat sink, and the edge of the heat sink contacts the outer wall of the positioning pin.
[0015] According to some preferred embodiments of the present invention, the frame body is made of metal.
[0016] By adopting the above technical solutions, compared with the prior art, the transmission frame of this utility model, which is suitable for frameless power modules, can be transmitted in existing automated plastic encapsulation equipment. By placing the product on the transmission frame in advance and transmitting multiple transmission frames in the equipment at the same time, it is beneficial to improve work efficiency, prevent product wear during transmission, ensure product positioning accuracy, and ensure product quality stability. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional structural diagram of the transmission frame in a preferred embodiment of the present invention;
[0019] Figure 2 This is a three-dimensional structural diagram of a frameless power module placed on a transmission frame in a preferred embodiment of the present invention;
[0020] Figure 3 for Figure 2 A bottom view;
[0021] Among them, the frame body-1, the first through slot-11, the first slot-111, the second slot-112, the second through slot-12, the third through slot-13, the fourth through slot-14, the extension block-15, the positioning pin-2, the frameless power module-3, and the heat sink-31. Detailed Implementation
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0023] Reference Figures 1 to 3 This embodiment provides a transmission frame suitable for frameless power modules, used to place and fix the frameless power module 3 to be packaged, and to transmit it within an automated molding and encapsulation device. The frameless power module 3 includes a heat sink 31 and terminals and other components located on the heat sink 31. The transmission frame includes a frame body 1 and positioning components fixedly mounted on the frame body 1. The frame body 1 has at least two first through slots 11 spaced apart in its thickness direction, and the number of positioning components is equal to the number of first through slots 11. The positioning components are fixedly mounted on the edge of the first through slots 11, and the frameless power module 3 is located above the first through slots 11 and within the range of the positioning components. The positioning components are used to position and fix the frameless power module 3, ensuring its positioning accuracy while preventing the product from falling.
[0024] Furthermore, the frame body 1 is made of metal, such as... Figure 1 As shown, in this embodiment, the frame body 1 has two first through slots 11. Each first through slot 11 includes a first slot portion 111 and a second slot portion 112 located at the apex of the first slot portion 111. All second slot portions 112 in each first through slot 11 are connected to the first slot portion 111. The shape of the first slot portion 111 is the same as the shape of the heat sink 31. In this embodiment, the shape of the first slot portion 111 is rectangular, and each of the four apex of the rectangular first slot portion 111 has a second slot portion 112. Figure 2 and Figure 3As shown, when the frameless power module 3 is placed on the first through slot 11, the top surface of the first slot 111 is in contact with the bottom surface of the heat sink 31, and the center of the heat sink 31 and the center of the first slot 111 are located in the same vertical direction. In addition, the total area of all the first slots 111 accounts for more than or equal to 10% of the area of the frame body 1, so as to ensure that sufficient space is reserved for the push rod in the automated molding equipment to lift the frameless power module 3 from the bottom of the heat sink 31 upwards.
[0025] Furthermore, the area of the bottom surface of the heat sink 31 is larger than the area of the top surface of the first slot 111, ensuring that when the frameless power module 3 is placed above the first through slot 11, at least a portion of its area can fit against the frame body 1 to provide support. Specifically, an extension block 15 is provided between each two adjacent second slots 112 along the length and width directions of the first slot 111. The orthographic projection of each extension block 15 on the horizontal plane is located within the area enclosed by the orthographic projections of the corresponding two second slots 112 on the horizontal plane. The extension blocks 15 are provided precisely to support the frameless power module 3.
[0026] Furthermore, such as Figure 1 and Figure 2 As shown, each positioning component includes multiple positioning pins 2, and one or more positioning pins 2 are fixedly disposed on each extension block 15. In this embodiment, two positioning pins 2 are spaced apart on each extension block 15, and each positioning pin 2 is perpendicular to the extension block 15. To ensure the positioning and fixing function of the positioning component for the frameless power module 3, the distance between the top of the positioning pin 2 and the top surface of the extension block 15 is set to be greater than the thickness of the heat sink 31. Furthermore, the positions of the multiple positioning pins 2 in each positioning component need to ensure that the edge of the heat sink 31 can contact the outer wall of the corresponding side positioning pin 2 to ensure positioning accuracy.
[0027] Preferably, to reduce the overall weight of the frame body 1 and facilitate its transport, a second through slot 12 penetrating its thickness direction is provided at both ends of the frame body 1. The second through slot 12 can also be used for clamping and holding the transport frame by a clamping device. A third through slot 13 penetrating its thickness direction is also provided on the frame body 1, and the third through slot 13 is located between two adjacent first through slots 11. At the same time, multiple fourth through slots 14 penetrating its thickness direction are provided at intervals at the top and bottom of the frame body 1. In this embodiment, four fourth through slots 14 are evenly spaced at the top and bottom of the frame body 1. The arrangement of these through slots can effectively reduce the weight of the frame body 1. In addition, in order to ensure the strength of the entire frame body 1, the percentage of the total area of the first through slot 11, second through slot 12, third through slot 13 and fourth through slot 14 to the area of the frame body 1 is less than or equal to 75%.
[0028] This utility model provides a transmission frame suitable for frameless power modules. During production, the frameless power module 3 to be packaged can be placed inside the positioning component of the transmission frame, ensuring that the bottom surface of the heat sink 31 is in contact with the extension block 15, the first groove 111, and part of the second groove 112. Then, the entire transmission frame can be placed in an automated encapsulation device for transmission. During the transmission process, only the bottom surface of the frame body 1 slides on the guide rail, which can effectively prevent wear and tear on the product during transmission, improve work efficiency, and ensure product quality.
[0029] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.
Claims
1. A transmission frame suitable for frameless power modules, characterized in that, The device includes a frame body and positioning components fixedly mounted on the frame body. At least two first through slots are spaced apart on the frame body. The number of positioning components is equal to the number of first through slots. The positioning components are fixedly mounted on the edge of the first through slots. The frameless power module is located above the first through slots and within the range of the positioning components. The positioning components are used to position and fix the frameless power module.
2. The transmission framework according to claim 1, characterized in that, The first through slot extends through the thickness of the frame body. Each first through slot includes a first slot portion and a second slot portion located at the apex of the first slot portion. All second slot portions in each first through slot are connected to the first slot portion.
3. The transmission framework according to claim 2, characterized in that, The frameless power module includes a heat sink. When the frameless power module is placed on the first through slot, the top surface of the first slot is in contact with the bottom surface of the heat sink, and the area of the bottom surface of the heat sink is larger than the area of the top surface of the first slot.
4. The transmission framework according to claim 2, characterized in that, Both ends of the frame body are provided with a second through slot extending through its thickness direction. The second through slot is used for the clamping device to clamp and transfer the frame. The frame body is also provided with a third through slot extending through its thickness direction. The third through slot is located between two adjacent first through slots. The top and bottom of the frame body are also provided with a plurality of fourth through slots extending through its thickness direction at intervals.
5. The transmission framework according to claim 4, characterized in that, The total area of all the first slots accounts for more than or equal to 10% of the area of the frame body, and the total area of the first through slot, the second through slot, the third through slot and the fourth through slot accounts for less than or equal to 75% of the area of the frame body.
6. The transmission framework according to claim 3, characterized in that, The shape of the first slot is the same as that of the heat sink. When the frameless power module is placed on the first through slot, the center of the heat sink and the center of the first slot are located in the same vertical direction.
7. The transmission framework according to claim 6, characterized in that, The frame body includes multiple extension blocks for supporting the frameless power module; the first slot is rectangular, and the extension blocks are provided between two adjacent second slots along the length and / or width of the first slot, and the orthographic projection of the extension block on the horizontal plane is located in the area enclosed by the orthographic projections of the corresponding two second slots on the horizontal plane.
8. The transmission framework according to claim 7, characterized in that, Each of the positioning components includes multiple positioning pins, and one or more positioning pins are fixedly disposed on each of the extension blocks, the positioning pins being perpendicular to the extension blocks.
9. The transmission framework according to claim 8, characterized in that, The distance between the top of the locating pin and the top surface of the extension block is greater than the thickness of the heat sink, and the edge of the heat sink contacts the outer wall of the locating pin.
10. The transmission framework according to any one of claims 1 to 9, characterized in that, The frame body is made of metal.