Insulated gate bipolar transistor (IGBT) module sealant filling device with good filling effect

Abstract

The utility model discloses an IGBT (Insulated Gate Bipolar Translator) module sealant filling device with a good filling effect, which relates to the technical field of IGBT module sealing and filling, and comprises a workbench and a sealant storage barrel connected with the workbench, a sealant dripping head is arranged on the lower surface of the bottom end of the sealant storage barrel, a stirring component is arranged in the sealant storage barrel, and a driving component matched with the stirring component is arranged at the top end of the sealant storage barrel. A quantitative glue feeding assembly is arranged at the bottom end of the glue storage barrel and matched with the glue dripping head, and through mutual cooperation of a motor, a rotating shaft, a three-way rod, a fixed wheel, a first gear, a second gear, a third gear, a connecting rod and stirring blades, when the motor drives the three-way rod to rotate, the first gear, the second gear and the third gear which are connected with the three-way rod can be driven to rotate; and meanwhile, the first gear can drive a second gear to rotate, the second gear rotates to drive a third gear to rotate, so that the third gear drives stirring blades to rotate around a supporting column and rotate around a rotating shaft at the same time, curing of the sealant in the sealant storage barrel is avoided, and sealant canning operation on the IGBT module is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of IGBT module sealing and filling technology, specifically an IGBT module sealant filling device with good filling effect. Background Technology

[0002] IGBT modules are modular semiconductor products that are packaged by insulated gate bipolar transistor chips and fairings (FWD) through specific circuit bridging. The packaged IGBT modules are directly used in equipment such as frequency converters and UPS uninterruptible power supplies. Sealant refers to a sealing material that deforms with the shape of the sealing surface, does not flow easily, and has a certain degree of adhesion. It is an adhesive used to fill the gaps in the structure to achieve a sealing effect. It has functions such as leak prevention, waterproofing, vibration prevention, sound insulation, and heat insulation. Sealant plays an important role in the IGBT module manufacturing process.

[0003] A utility model patent with publication number CN215437035U discloses an automatic sealant filling machine, including a tank. A fixed cylinder is fixedly inserted into the upper side wall of the tank, and an air inlet is connected to the lower side wall of the fixed cylinder. A one-way valve is provided at the air inlet. An air outlet pipe penetrating the top wall of the tank is connected to the outer wall of the fixed cylinder, and a second one-way valve is provided inside the air outlet pipe. A piston is slidably installed inside the fixed cylinder, and an insert rod penetrating the top wall of the fixed cylinder is fixedly connected to the upper side wall of the piston. This utility model uses the rotation of a cam in conjunction with the first and second one-way valves to achieve the continuous descent of the pressure plate, thereby using negative pressure to automatically squeeze the sealant inside the tank. This facilitates the extrusion of the sealant and greatly improves the production efficiency of the device. At the same time, multiple stirring rods are used to stir the sealant, avoiding the phenomenon of sealant blockage caused by excessive viscosity, thus facilitating the sealant filling process.

[0004] The sealant will solidify when left to stand in the tank. Although the above-mentioned patent avoids the sealant from clogging the discharge pipe by adding a stirring shaft at the discharge pipe, it cannot prevent the sealant from solidifying inside the tank. Utility Model Content

[0005] The purpose of this invention is to provide an IGBT module sealant filling device with good filling effect, so as to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sealing adhesive filling device for IGBT modules with good filling effect includes a workbench and a storage tank fixedly connected to the workbench via a support column. A drip head is provided on the lower surface of the bottom of the storage tank. The device is characterized by having a stirring assembly inside the storage tank, a driving assembly at the top of the storage tank in conjunction with the stirring assembly, and a metering dispensing assembly at the bottom of the storage tank in conjunction with the drip head. The stirring assembly includes a first rotating mechanism and a second rotating mechanism, which are connected by gear meshing. The first rotating mechanism includes a fixed wheel, a first gear, and a second gear. The fixed wheel is fixedly connected to the upper end of the inner wall of the storage tank via a support column. The first gear meshes with the fixed wheel. The lower end of the first gear is connected to a connecting shaft, which passes through a hole in a three-way rod and connects to the second gear. The connecting shaft and the three-way rod are rotatably connected via a bearing. The second rotating mechanism includes a third gear, a connecting rod, and a stirring blade. The third gear is rotatably connected to the support column fixedly connected to the three-way rod via a bearing. The third gear meshes with the second gear. The connecting rod is connected to the lower end of the third gear and has a stirring blade connected to its end.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the drive assembly includes a motor, a rotating shaft, a three-way bar, and a fixed wheel. The motor is located at the top of the glue storage tank and its output end passes through the glue storage tank and is connected to the rotating shaft and rotatably connected to the glue storage tank via a bearing. A three-way bar is fixedly connected to the upper part of the rotating shaft, and the three-way bar has holes at the beginning.

[0010] In one alternative: the metering dispensing assembly includes a metering turntable, a metering groove, and a dispensing hole. The metering turntable is fixedly connected to a rotating shaft and slidably connected to the inner wall of the glue storage tank. The metering turntable has a metering groove. The dispensing hole is located on the bottom surface of the glue storage tank and on the travel path of the metering groove. The dispensing hole cooperates with the dispensing head.

[0011] In one alternative: the outer wall of the glue storage tank is provided with an observation window.

[0012] In one alternative: the surfaces of the fixed wheel, the first gear, and the second gear are coated with a galvanized layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention achieves a multi-functionality through the interaction of a motor, a rotating shaft, a three-way lever, a fixed wheel, a first gear, a second gear, a third gear, a connecting rod, and a stirring blade. When the motor starts and drives the three-way lever to rotate, it simultaneously drives the first gear, the second gear, and the third gear connected to the three-way lever to rotate. Simultaneously, because the first gear meshes with the fixed wheel, during rotation, the first gear drives the second gear to rotate, and the second gear's rotation drives the third gear to rotate. Ultimately, the third gear drives the stirring blade to rotate around the support column and the rotating shaft simultaneously, improving stirring efficiency, preventing the sealant in the storage tank from solidifying, and facilitating the sealing sealant filling operation for the IGBT module. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the glue storage tank of this utility model.

[0017] Figure 3 This is a schematic diagram of the first rotating mechanism of this utility model.

[0018] Figure 4 This is a schematic diagram of the second rotating mechanism of this utility model.

[0019] Figure 5 This is a schematic diagram of the quantitative dispensing assembly of this utility model.

[0020] Figure label annotations: 1. Workbench; 2. Glue storage tank; 3. Motor; 4. Rotating shaft; 401. Three-way rod; 402. Fixed wheel; 403. First gear; 404. Second gear; 405. Third gear; 406. Connecting rod; 407. Stirring blade; 5. Metering turntable; 501. Metering groove; 502. Glue inlet; 6. Glue dripping head. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, such as Figures 1-5As shown, an IGBT module sealant filling device with good filling effect includes a workbench 1 and a storage tank 2 fixedly connected to the workbench 1 by a support column. The bottom surface of the storage tank 2 is provided with a dispensing head 6, which is responsible for sealing the IGBT module. An observation window is opened on the outer wall of the storage tank 2 to observe the condition of the sealant inside the storage tank 2. A stirring component is provided inside the storage tank 2. A driving component is provided at the top of the storage tank 2 in conjunction with the stirring component. The driving component drives the stirring component to run to prevent the sealant from curing. A metering dispensing component is provided at the bottom of the storage tank 2 in conjunction with the dispensing head 6.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the drive assembly includes a motor 3, a rotating shaft 4, a three-way lever 401, and a fixed wheel 402. The motor 3 is located at the top of the glue storage tank 2, and its output end passes through the glue storage tank 2 and is connected to the rotating shaft 4. The motor 3 is rotatably connected to the glue storage tank 2 through a bearing. When the motor 3 starts, it drives the rotating shaft 4 to rotate. The three-way lever 401 is fixedly connected to the upper part of the rotating shaft 4. The rotation of the rotating shaft 4 drives the three-way lever 401 to rotate. The three-way lever 401 has holes.

[0024] like Figure 3 and Figure 4As shown, the stirring assembly includes a first rotating mechanism and a second rotating mechanism, which are connected by gear meshing. The first rotating mechanism includes a fixed wheel 402, a first gear 403, and a second gear 404. The fixed wheel 402 is fixedly connected to the upper end of the inner wall of the glue storage tank 2 via a support column. The first gear 403 meshes with the fixed wheel 402. The lower end of the first gear 403 is connected to a connecting shaft, and the connecting shaft passes through a hole in the three-way rod 401 to connect to the second gear 404. The connecting shaft and the three-way rod 401 are rotatably connected by a bearing. When the three-way rod 401 rotates, it drives the connecting shaft to rotate, causing the first gear 403 and the second gear 404 to start rotating. At the same time, the first gear 403 meshes with the fixed wheel 402, so that while the first gear 403 revolves around the rotating shaft 4, it also drives the second gear 404 to rotate together. The second rotating mechanism includes a third gear 405. The connecting rod 406 and the stirring blade 407 are connected. The third gear 405 is rotatably connected to the support column fixedly connected to the three-way rod 401 via a bearing. The third gear 405 meshes with the second gear 404. When the three-way rod 401 rotates, the third gear 405 will revolve around the rotating shaft 4. At the same time, because the third gear 405 meshes with the second gear 404, when the second gear 404 rotates, it will drive the third gear 405 to rotate. The rotation of the third gear 405 will drive the connecting rod 406 connected to the third gear 405 to rotate. The lower end of the connecting rod 406 is connected to the third gear 405, and the end is connected to the stirring blade 407. Finally, the connecting rod 406 drives the stirring blade 407 to revolve around the support column rotatably connected to the third gear 405 via a bearing, and at the same time, it revolves around the rotating shaft 4 under the action of the three-way rod 401. The surfaces of the fixed wheel 402, the first gear 403, and the second gear 404 are coated with a galvanized layer.

[0025] like Figure 5 As shown, the metering dispensing assembly includes a metering turntable 5, a metering groove 501, and a dispensing hole 502. The metering turntable 5 is fixedly connected to a rotating shaft 4 and slidably connected to the inner wall of the glue storage tank 2. The rotation of the rotating shaft 4 drives the metering turntable 5 to rotate. The metering turntable 5 has a metering groove 501. The dispensing hole 502 is located on the bottom surface of the glue storage tank 2 and is located on the travel path of the metering groove 501. When the metering groove 501 rotates above the dispensing hole 502, the sealant enters the dispensing hole 502. When the metering groove 501 leaves the dispensing hole 502, the dispensing hole 502 is blocked, and the sealant no longer enters. Because the rotation speed of the metering turntable 5 is fixed, the time it takes for the metering groove 501 to pass above the dispensing hole 502 is fixed each time, thus completing the metering dispensing. The dispensing hole 502 cooperates with the dispensing head 6.

[0026] The above embodiment discloses an IGBT module sealant filling device with good filling effect. In this device, the starting motor 3 drives the rotating shaft 4 to rotate, causing the three-way lever 401 to start rotating. At the same time, the first gear 403, the second gear 404, and the third gear 405 rotate around the rotating shaft. Under the action of the fixed wheel 402, the first gear 403 and the second gear 404 rotate on their own, driving the third gear 405 to rotate. Finally, the stirring blade 407 rotates around the rotating shaft while rotating around the support column, improving the stirring efficiency. At the same time, the rotation of the rotating shaft 4 drives the metering turntable 5 to rotate to complete the metering of sealant. Under the action of the dispensing head 6, the sealing of the IGBT module is completed.

[0027] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An IGBT module sealant filling device with good filling effect, comprising a workbench (1) and a sealant storage barrel (2) fixedly connected with the workbench (1) through a support column, and a sealant dripping head (6) is arranged at the bottom end lower surface of the sealant storage barrel (2), characterized in that, The glue storage barrel (2) is internally provided with a stirring assembly, the top end of the glue storage barrel (2) is provided with a driving assembly matched with the stirring assembly, the bottom end of the glue storage barrel (2) is provided with a quantitative glue feeding assembly matched with the glue dropping head (6), the stirring assembly comprises a first rotating mechanism and a second rotating mechanism, the first rotating mechanism and the second rotating mechanism are connected through gear engagement, the first rotating mechanism comprises a fixed wheel (402), a first gear (403) and a second gear (404), the fixed wheel (402) is fixedly connected to the upper end of the inner wall of the glue storage barrel (2) through a support, the first gear (403) is engaged with the fixed wheel (402), the lower end of the first gear (403) is connected with a connecting shaft, the connecting shaft passes through the hole in the three-way rod (401) and is connected with the second gear (404), the connecting shaft and the three-way rod (401) are rotationally connected through a bearing, the second rotating mechanism comprises a third gear (405), a connecting rod (406) and a stirring blade (407), the third gear (405) is rotationally connected to the support fixedly connected with the three-way rod (401) through a bearing, the third gear (405) is engaged with the second gear (404), the connecting rod (406) is connected with the lower end of the third gear (405) and the end portion is connected with the stirring blade (407).

2. The IGBT module sealant potting device with good effect according to claim 1, characterized in that, The driving assembly comprises a motor (3), a rotating shaft (4), a three-way rod (401) and a fixed wheel (402), the motor (3) is arranged at the top end of the glue storage barrel (2) and the output end is connected with the rotating shaft (4) through the glue storage barrel (2) and is rotationally connected with the glue storage barrel (2) through a bearing, the upper portion of the rotating shaft (4) is fixedly connected with the three-way rod (401), and the three-way rod (401) is provided with a hole.

3. The IGBT module sealant potting device with good effect according to claim 1, characterized in that, The quantitative glue feeding assembly comprises a quantitative rotating disc (5), a quantitative groove (501) and a glue inlet hole (502), the quantitative rotating disc (5) is fixedly connected with the rotating shaft (4) and is slidingly connected with the inner wall of the glue storage barrel (2), the quantitative rotating disc (5) is provided with the quantitative groove (501), the glue inlet hole (502) is arranged on the bottom surface of the glue storage barrel (2) and is located on the travel path of the quantitative groove (501), and the glue inlet hole (502) is matched with the glue dropping head (6).

4. The IGBT module sealant potting device with good effect of potting according to claim 1, characterized in that, An observation window is formed in the outer wall of the glue storage barrel (2).

5. The potting effectual IGBT module sealant potting device according to claim 1, characterized by, The surfaces of the fixed wheel (402), the first gear (403) and the second gear (404) are sprayed with a zinc plating layer.

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