Igbt module welding and dispensing device

Abstract

The utility model relates to the field of electronic product processing, in particular to an igbt module welding and dispensing device. An igbt module welding dispensing device comprises a support, an electric conveying belt, a lead screw motor, a frame plate, an electric sliding rail, a movable plate, a laser welding gun and the like, the electric conveying belt is installed on the support, a first connecting frame is fixedly connected to the front side face of the support, the frame plate is slidably connected to the upper portion of the first connecting frame, and the lead screw motor is installed on the first connecting frame; a lead screw of the lead screw motor is in threaded connection with the frame plate, two electric sliding rails are installed on the frame plate in a bilateral symmetry mode, the movable plate is installed on sliding blocks of the two electric sliding rails, at least two sets of laser welding guns are installed at the bottom of the movable plate, and the number of each set of laser welding guns is at least two. By additionally arranging a plurality of laser welding guns and a plurality of dispensing heads, welding and dispensing can be carried out on a plurality of positions on the igbt module at a time, and the working efficiency of welding and dispensing operation is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic product processing, in particular to an IGBT module welding glue dispensing device. Background Art

[0002] The IGBT module is a power module composed of insulated gate bipolar transistors, which are widely used in servo motors, frequency converters, frequency conversion home appliances and other fields. The IGBT module is mainly composed of chips, DBC substrates and base plates. Multiple DBC substrates are welded on the base plate, and the chips are bonded to the DBC substrates. During the packaging process of the IGBT module, glue dispensing is required on the base plate to fix the shell of the IGBT module on the base plate through glue.

[0003] Existing IGBT modules are usually produced and processed using industrial robots, which can only control the robot to perform glue dispensing or welding operations at a single location at a time, resulting in increased time costs and low production efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the current IGBT module that only a single position is processed at a time during the processing, resulting in increased time cost and low production efficiency, the technical problem to be solved by the utility model is to provide an IGBT module welding and gluing device that can weld and gluing multiple positions on the IGBT module at one time.

[0005] In order to solve the above technical problems, the utility model provides such an IGBT module welding dispensing device, including a bracket, an electric conveyor belt, a screw motor, a frame plate, an electric slide rail, a movable plate, a laser welding gun, a charging box, a stop plate, a cylinder, a dispensing head, a connecting frame 1 and a connecting frame 2, the bracket is equipped with an electric conveyor belt, the front side of the bracket is fixedly connected to the connecting frame 1, the upper part of the connecting frame 1 is slidably connected to the frame plate, the connecting frame 1 is equipped with a screw motor, the screw of the screw motor is threadedly connected to the frame plate, two electric slide rails are symmetrically installed on the frame plate, the movable plate is installed on the sliders of the two electric slide rails, and at least two groups of laser welding guns are installed at the bottom of the movable plate, and the number of laser welding guns in each group is at most There are at least two of them, and a connecting frame 2 is fixedly connected to the front side of the bracket, and the connecting frame 2 is located on the left side of the connecting frame 1. A loading box is fixedly connected to the connecting frame 2, and an inlet for filling glue is provided on the front side of the top of the loading box, and a circle of through holes is provided along the edge of the bottom surface of the loading box, and a cylinder is installed on the front lower part of the loading box, and a stop plate is connected to the telescopic rod of the cylinder, and the stop plate is tightly attached to the inner bottom surface of the loading box, and the stop plate is provided with the same number of through holes as the bottom surface of the loading box. When the telescopic rod of the cylinder is in a retracted state, the through holes on the loading box are not connected to the through holes on the stop plate, and the through holes on the loading box can be connected to the through holes on the stop plate by pushing the stop plate to move by the cylinder, and a glue head is installed at the through holes on the bottom surface of the loading box.

[0006] Preferably, a cover plate is also included, and the cover plate is clamped at the feeding port on the top of the charging box.

[0007] Preferably, it also includes a protective shell, a bevel gear shaft, a transmission belt and a stirring ring. The protective shell is connected to the top of the charging box, and the rear side and the top of the protective shell are rotatably connected to the bevel gear shaft. The bevel gear shaft on the rear side is connected to the electric conveyor belt through a transmission belt. The bottom end of the bevel gear shaft on the front side passes through the top of the charging box and is connected to the stirring ring, and the bevel gears on the two bevel gear shafts are meshed.

[0008] Preferably, a scraper is also included, which is installed on the inner bottom of the bracket, and the upper end of the scraper contacts the lower end surface of the electric conveyor belt.

[0009] Preferably, the scraper is installed on the inner bottom of the bracket at an angle of 30-60 degrees.

[0010] Preferably, a heating block is also included, and heating blocks are installed on both sides of the charging box.

[0011] Preferably, a collection box is further included, which is installed on the inner bottom of the bracket and is located on the left side of the scraper.

[0012] Preferably, the charging box is made of stainless steel.

[0013] Preferably, a circle of through holes on the bottom surface of the charging box is arranged along the circumference of the charging box, corresponding to the positions on the IGBT module where glue needs to be dispensed, so that the device can perform glue dispensing operations on multiple positions at one time.

[0014] Preferably, the cover plate is made of transparent material.

[0015] The beneficial effects of the utility model are:

[0016] 1. By adding multiple laser welding guns, it is possible to weld multiple positions on the IGBT module at one time, greatly improving the welding efficiency.

[0017] 2. By adding multiple dispensing heads, dispensing operations can be performed simultaneously on the locations on the IGBT module that require dispensing, thereby improving the efficiency of dispensing.

[0018] 3. By adding bevel gear shafts, transmission belts, stirring rings and heating blocks, the glue in the loading box is stirred and heated, which effectively prevents the glue from solidifying, thereby improving the dispensing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2It is a three-dimensional structural schematic diagram of the support, electric conveyor belt, screw motor, frame plate, electric slide rail, movable plate and laser welding gun of the utility model.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the utility model electric conveyor belt, bracket, cylinder, dispensing head, stop plate, stirring ring, protective shell, bevel gear shaft, charging box and cover plate.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the dispensing head, stop plate, cylinder and charging box of the utility model.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the electric conveyor belt, bracket, scraper and collection box of the utility model.

[0024] The marks in the accompanying drawings are: 1- bracket, 2- electric conveyor belt, 3- lead screw motor, 4- frame plate, 5- electric slide rail, 6- movable plate, 7- laser welding gun, 8- charging box, 9- cover plate, 10- stop plate, 11- cylinder, 12- dispensing head, 13- protective shell, 14- bevel gear shaft, 15- stirring ring, 16- scraper, 17- collecting box, 18- heating block, 19- connecting frame one, 20- connecting frame two, 21- transmission belt. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Embodiment 1: An IGBT module welding glue dispensing device, such as Figure 1-Figure 4As shown, it includes a bracket 1, an electric conveyor belt 2, a screw motor 3, a frame plate 4, an electric slide rail 5, a movable plate 6, a laser welding gun 7, a charging box 8, a stop plate 10, a cylinder 11, a dispensing head 12, a connecting frame 19 and a connecting frame 20. The bracket 1 is equipped with an electric conveyor belt 2, the front side of the bracket 1 is fixedly connected to a connecting frame 19, the upper part of the connecting frame 19 is slidably connected to the frame plate 4, the connecting frame 19 is equipped with a screw motor 3, the screw of the screw motor 3 is threadedly connected to the frame plate 4, two electric slide rails 5 are symmetrically installed on the frame plate 4, the movable plate 6 is installed on the sliders of the two electric slide rails 5, at least two groups of laser welding guns 7 are installed at the bottom of the movable plate 6, and the number of laser welding guns 7 in each group is at least two, the front side of the bracket 1 is fixedly connected to a connecting frame 20, the connecting frame 20 is located on the left side of the connecting frame 19, the connecting frame 20 is fixedly connected to the charging box 8, and the top front side of the charging box 8 is opened The bottom surface of the loading box 8 is provided with a feeding port for adding glue, and a circle of through holes is opened along the edge position of the bottom surface of the loading box 8. The circle of through holes on the bottom surface of the loading box 8 is arranged along the circumference of the loading box 8, corresponding to the position where glue is required on the IGBT module, so that the device can perform glue dispensing operations on multiple positions at one time. The loading box 8 is made of stainless steel, which can prevent the loading box 8 from rusting and extend the service life of the loading box 8. A cylinder 11 is installed at the lower front part of the loading box 8, and a stop plate 10 is connected to the telescopic rod of the cylinder 11. The stop plate 10 is close to the inner bottom surface of the loading box 8, and the stop plate 10 is provided with the same number of through holes as the bottom surface of the loading box 8. When the telescopic rod of the cylinder 11 is in the retracted state, the through holes on the loading box 8 are not connected with the through holes on the stop plate 10. The stop plate 10 is pushed to move by the cylinder 11 so that the through holes on the loading box 8 are connected with the through holes on the stop plate 10, and a glue dispensing head 12 is installed at the through hole on the bottom surface of the loading box 8.

[0027] When the device is used for work, the electric conveyor belt 2 is controlled to move the IGBT module to be processed to the bottom of the laser welding gun 7, and the screw motor 3 and the electric slide rail 5 are controlled to drive the frame plate 4 and the movable plate 6 to move so that the muzzle of the laser welding gun 7 is aligned with the position where the DBC substrate and the bottom plate need to be welded, and then the laser welding gun 7 is controlled to perform welding processing. Since each DBC substrate is provided with a corresponding laser welding gun 7 above it, multiple laser welding guns 7 can weld different DBC substrates to the bottom plate at the same time, thereby improving the welding efficiency. The DBC substrate and the bottom plate are welded completely. After completion, the electric conveyor belt 2 is controlled to move to transport the welded DBC substrate and bottom plate to the bottom of the loading box 8, and the telescopic rod of the control cylinder 11 is extended to drive the stop plate 10 to move so that the through holes on the stop plate 10 are connected with the through holes on the bottom surface of the loading box 8. At this time, the glue in the loading box 8 is dotted around the bottom plate through the glue dispensing head 12. When the amount of glue on the bottom plate reaches the requirement, the telescopic rod of the control cylinder 11 is retracted to drive the stop plate 10 to move so that the through holes on the stop plate 10 are not connected with the through holes on the bottom surface of the loading box 8, so as to block the through holes on the bottom surface of the loading box 8 and stop the glue from flowing out, thus completing the glue dispensing work.

[0028] Embodiment 2: Based on embodiment 1, Figure 1 and Figure 3 As shown, a cover plate 9 is also included, which is snapped onto the feeding port at the top of the loading box 8. The loading box 8 can be closed by the cover plate 9 to prevent impurities from entering the loading box 8 and affecting the quality of the glue. At the same time, the cover plate 9 is made of a transparent material. The cover plate 9 made of a transparent material is convenient for workers to check the amount of glue in the loading box 8 in real time, so that the workers can add glue to the loading box in time.

[0029] Embodiment 3: Based on embodiment 2, Figure 1 and Figure 3 As shown, it also includes a protective shell 13, a heating block 18, a bevel gear shaft 14, a transmission belt 21 and a stirring ring 15. The top of the charging box 8 is connected to the protective shell 13, and the rear side and the top of the protective shell 13 are rotatably connected to the bevel gear shaft 14. The rear bevel gear shaft 14 is connected to the electric conveyor belt 2 through the transmission belt 21. The bottom end of the front bevel gear shaft 14 passes through the top of the charging box 8 and is connected to the stirring ring 15. The bevel gears on the two bevel gear shafts 14 are meshed. Heating blocks 18 are installed on both sides of the charging box 8. When the electric conveyor belt 2 rotates, the rear bevel gear shaft 14 is driven by the transmission belt 21 to rotate, so that the front bevel gear shaft 14 drives the stirring ring 15 to rotate, and the glue in the charging box 8 is stirred. At the same time, the heating block 18 on the charging box 8 heats the glue. Under the dual action of the stirring ring 15 and the heating block 18, the glue in the charging box 8 can be effectively prevented from solidifying.

[0030] Embodiment 4: Based on embodiment 3, Figure 5As shown, it also includes a scraper 16 and a collecting box 17. The scraper 16 is installed at an angle of 30-60 degrees on the inner bottom of the bracket 1. The upper end of the scraper 16 contacts the lower end surface of the electric conveyor belt 2. The collecting box 17 is installed at the inner bottom of the bracket 1. The collecting box 17 is located on the left side of the scraper 16. The scraper 16 can be used to scrape the residual glue on the electric conveyor belt 2 into the collecting box 17 to prevent the glue from solidifying on the electric conveyor belt 2 and affecting the stability of the bottom plate moving on the electric conveyor belt 2. Since the scraper 16 is installed at an angle of 30-60 degrees on the inner bottom of the bracket 1, the inclination angle increases the contact area between the scraper 16 and the electric conveyor belt 2, which can increase the force for scraping off the glue, thereby enhancing the scraping effect.

[0031] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An IGBT module welding glue dispensing device, characterized in that: The invention comprises a bracket (1), an electric conveyor belt (2), a screw motor (3), a frame plate (4), an electric slide rail (5), a movable plate (6), a laser welding gun (7), a charging box (8), a stop plate (10), a cylinder (11), a dispensing head (12), a connecting frame 1 (19) and a connecting frame 2 (20), wherein the bracket (1) is provided with an electric conveyor belt (2), the front side of the bracket (1) is fixedly connected with a connecting frame 1 (19), the upper part of the connecting frame 1 (19) is slidably connected with a frame plate (4), the connecting frame 1 (19) is provided with a screw motor (3), the screw of the screw motor (3) is threadedly connected with the frame plate (4), two electric slide rails (5) are symmetrically provided on the frame plate (4), the movable plate (6) is installed on the sliders of the two electric slide rails (5), at least two groups of laser welding guns (7) are provided at the bottom of the movable plate (6), the number of each group of laser welding guns (7) is at least two, the front side of the bracket (1) is fixedly connected with a connecting frame 1 (19), the upper part of the connecting frame 1 (19) is slidably connected with the frame plate (4), the connecting frame 1 (19) is provided with a screw motor (3), the screw of the screw motor (3) is threadedly connected with the frame plate (4), two electric slide rails (5) are symmetrically provided on the left and right sides of the frame plate (4), the movable plate (6) is installed on the sliders of the two electric slide rails (5), at least two groups of laser welding guns (7) are provided at the bottom of the movable plate (6), the number of each group of laser welding guns (7) is at least two, The connecting frame (20) is fixedly connected to the connecting frame (19), the connecting frame (20) is located on the left side of the connecting frame (19), and a loading box (8) is fixedly connected to the connecting frame (20), and a feeding port for adding glue is opened on the top front side of the loading box (8), and a circle of through holes is opened along the edge of the bottom surface of the loading box (8), and a cylinder (11) is installed at the lower front side of the loading box (8), and a stop plate (10) is connected to the telescopic rod of the cylinder (11), and the stop plate (10) is tightly The inner bottom surface of the loading box (8) is attached, and the stop plate (10) is provided with the same number of through holes as the bottom surface of the loading box (8). When the telescopic rod of the cylinder (11) is in a retracted state, the through holes on the loading box (8) are not connected with the through holes on the stop plate (10). The through holes on the loading box (8) and the through holes on the stop plate (10) can be connected by pushing the stop plate (10) to move by the cylinder (11). A glue head (12) is installed at the through holes on the bottom surface of the loading box (8).

2. The igbt module welding glue dispensing device according to claim 1, characterized in that: It also includes a cover plate (9), which is clamped at the feed inlet at the top of the charging box (8).

3. The IGBT module welding glue dispensing device according to claim 2 is characterized in that: The utility model also comprises a protective shell (13), a bevel gear shaft (14), a transmission belt (21) and a stirring ring (15); the top of the charging box (8) is connected with the protective shell (13); the rear side and the top of the protective shell (13) are both rotatably connected with the bevel gear shaft (14); the bevel gear shaft (14) on the rear side is transmission-connected with the electric conveyor belt (2) via the transmission belt (21); the bottom end of the bevel gear shaft (14) on the front side passes through the top of the charging box (8) and is connected with the stirring ring (15); the bevel gears on the two bevel gear shafts (14) are meshed.

4. The IGBT module welding glue dispensing device according to claim 3 is characterized in that: It also includes a scraper (16), which is installed on the inner bottom of the bracket (1), and the upper end of the scraper (16) is in contact with the lower end surface of the electric conveyor belt (2).

5. The IGBT module welding glue dispensing device according to claim 4 is characterized in that: The scraper (16) is installed on the inner bottom of the bracket (1) at an angle of 30-60 degrees.

6. The IGBT module welding glue dispensing device according to claim 5, characterized in that: It also includes a heating block (18), and the heating blocks (18) are installed on both the left and right sides of the charging box (8).

7. The IGBT module welding glue dispensing device according to claim 6, characterized in that: It also includes a collecting box (17), which is installed on the inner bottom of the bracket (1) and is located on the left side of the scraper (16).

8. The IGBT module welding glue dispensing device according to claim 7, characterized in that: The charging box (8) is made of stainless steel.

9. The IGBT module welding glue dispensing device according to claim 8, characterized in that: A circle of through holes on the bottom surface of the charging box (8) is arranged along the circumference of the charging box (8) and corresponds to the positions on the IGBT module where glue needs to be dispensed, so that the device can conveniently perform glue dispensing operations on multiple positions at one time.

10. The IGBT module welding glue dispensing device according to claim 9, characterized in that: The cover plate (9) is made of transparent material.

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