Adhesive removing assembly for silicon carbide power module

Abstract

The utility model relates to the technical field of module production, and discloses a degumming assembly for a silicon carbide power module, which comprises a frame body, a conveying assembly is arranged in an inner cavity of the frame body, a protective box is arranged above the frame body, and a degumming assembly is arranged in an inner cavity of the protective box; through cooperation of the conveying assembly, the protection box and the glue removing assembly, a servo motor drives a driving roller to drive a conveying belt to continuously convey a module body installed on a fixing plate, and then when the module is conveyed to the position under a square pipe cutter, the servo motor stops; the first air cylinder drives the square pipe cutter below the mounting plate to cut off overflowing glue on the periphery of the module body, the overflowing glue is broken through the protruding block, the overflowing glue is prevented from being framed on the module body, then glue removing work and repeated operation on the module body are completed, the glue removing efficiency of the module is improved, the labor intensity of workers is reduced, and the production efficiency is improved. Meanwhile, the production quality of the power module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of module production, in particular to a debonding assembly for a silicon carbide power module. Background Art

[0002] Power semiconductor devices are widely used in the fields of computers, network communications, consumer electronics, industrial control, automotive electronics, power systems, etc. Traditional silicon-based power devices are subject to the limitations of the inherent physical properties of silicon materials and have encountered insurmountable difficulties in high-frequency and high-power applications. Therefore, power devices based on silicon carbide have begun to be promoted. With the characteristics of high breakdown electric field strength, good thermal stability, high carrier saturation drift velocity and high thermal conductivity of silicon carbide materials, the energy loss and volume weight of power conversion devices such as inverters and frequency converters can be greatly reduced;

[0003] In the prior art, the Chinese utility model with publication number: CN217983319U discloses a silicon carbide power module, which includes: an insulating substrate, a circuit layer, pins and a plastic layer; the circuit layer is arranged on the insulating substrate, the pins are arranged on the circuit layer, the insulating substrate is provided with a connector spaced apart from the circuit layer and the pins, the insulating substrate, the connector, the circuit layer and the pins are embedded in the plastic layer, the surface of the insulating substrate away from the circuit layer passes through the plastic layer, and the end of the pin away from the circuit layer passes through the plastic layer. The connector in this application can increase the contact area between the insulating substrate and the plastic layer, thereby enhancing the adhesion between the insulating substrate and the plastic layer to avoid splitting; when external moisture invades the silicon carbide power module along the crack gap between the insulating substrate and the plastic layer, it is blocked by the connector, and the connector extends the path of moisture penetration, thereby improving the reliability of the product;

[0004] The above technical solution improves the sealing of the module, but some glue will inevitably overflow after the module is produced and packaged, which will affect the quality of the product. Traditionally, the residual glue is scraped off by a manual handheld cutter, which is time-consuming and labor-intensive. Therefore, we need to propose a glue removal assembly for silicon carbide power modules. Utility Model Content

[0005] The purpose of the utility model is to provide a degumming assembly for a silicon carbide power module, which is convenient for continuously removing the sealing residual glue on the power module, thereby improving the degumming efficiency of the power module, saving the labor intensity of the staff, and further improving the quality of the power module. At the same time, it is convenient to collect the removed residual glue, avoid the residual glue from scattering, and reduce the cleaning amount of the staff, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a debonding assembly for a silicon carbide power module, comprising a frame, a conveying assembly is disposed in the inner cavity of the frame, a protective box is disposed above the frame, and a debonding assembly is disposed in the inner cavity of the protective box;

[0007] The conveying assembly includes two groups of driving rollers rotatably connected to the inner cavity of the frame, one end of one group of driving rollers penetrates the frame and is driven by a servo motor, the two groups of driving rollers are both connected to a conveyor belt, a plurality of fixed plates are arranged at equal intervals on the upper surface of the conveyor belt, and the upper surfaces of the plurality of fixed plates are all clamped with a module body;

[0008] The degumming assembly includes a first cylinder, a mounting plate and a square tube cutter. The first cylinder is installed in the middle of the upper surface of the protective box. The telescopic end of the first cylinder penetrates the protective box and is fixedly connected to the upper surface of the mounting plate. The square tube cutter is arranged directly below the mounting plate. The square tube cutter is detachably connected to the mounting plate by multiple sets of connecting bolts. Four sets of protrusions are arranged at equal angles on the lower surface of the square tube cutter.

[0009] Preferably, a second through hole is opened in the middle of the upper surface of the fixed plate, a first through hole connected to the second through hole is opened on the upper surface of the conveyor belt, and a plurality of positioning blocks are arranged on the upper surface of the fixed plate.

[0010] Preferably, a support plate is fixedly connected to the inner cavity of the frame, and the support plate is arranged in the inner cavity of the conveyor belt, and the upper surface of the support plate is in contact with the inner top of the conveyor belt.

[0011] Preferably, a second cylinder is provided in the middle of the lower surface of the support plate, and a push plate is fixedly connected to the telescopic end of the second cylinder, and the inner diameter of the push plate is smaller than the inner diameter of the first through hole.

[0012] Preferably, baffles are fixedly connected to both ends of the lower surface of the mounting plate, the height of the baffles is the same as the height of the cutter, a telescopic rod is fixedly connected to the top of the inner cavity of the square tube cutter, a spring is sleeved on the outer side of the telescopic rod, and a pressure plate is fixedly connected to the lower end of the telescopic rod.

[0013] Preferably, the bottom of the inner cavity of the frame is inclined, a support frame is provided below the frame, a fan is provided on one side of the protective box, a glue discharge hole is opened in the middle of one side of the frame, and a collection component is provided on one side of the frame.

[0014] Preferably, the collection assembly includes a collection box, one side of the collection box is provided with a glue inlet hole and two groups of card slots, the glue inlet hole is connected to the glue discharge hole, one side of the frame is fixedly connected with a hanger that is engaged with the two groups of card slots, and the other side of the collection box is provided with an observation window.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model mainly cooperates among a conveying component, a protective box and a degumming component, and drives a driving roller transmission conveyor belt through a servo motor to continuously convey the module body installed on a fixed plate. When the module is conveyed to the bottom of a square tube cutter, the servo motor stops, and the first cylinder drives the square tube cutter under the mounting plate to cut off the overflow glue around the module body, and breaks the overflow glue through a convex block to avoid the overflow glue being framed on the module body, thereby completing the degumming work on the module body, repeating the operation, improving the degumming efficiency of the module, reducing the labor intensity of the staff, and improving the production quality of the power module.

[0017] 2. The utility model cooperates between the fan, the glue discharge hole and the collection component. The fan blows air to make the cut glue overflow fall into the collection box through the glue discharge hole and the glue inlet hole, thereby facilitating the collection of the taken out glue overflow, improving the cleanliness of the equipment, avoiding the spillage of glue, and reducing the cleaning workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the frame of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the glue removal mechanism of the utility model.

[0021] In the figure: 1. frame; 2. support frame; 3. conveying assembly; 31. servo motor; 32. driving roller; 33. conveyor belt; 34. first through hole; 35. fixing plate; 36. positioning block; 37. second through hole; 38. hanging piece; 39. glue discharge hole; 4. collecting assembly; 41. collecting box; 42. observation window; 43. glue inlet hole; 44. card slot; 5. module body; 6. protection box; 7. glue removal assembly; 71. first cylinder; 72. mounting plate; 73. baffle; 74. connecting bolt; 75. square tube cutter; 76. bump; 77. telescopic rod; 78. pressure plate; 79. spring; 8. fan; 9. support plate; 10. second cylinder; 11. push plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a debonding assembly for a silicon carbide power module, comprising a frame 1, a conveying assembly 3 is arranged in the inner cavity of the frame 1, a protective box 6 is arranged above the frame 1, and a debonding assembly 7 is arranged in the inner cavity of the protective box 6;

[0024] The conveying assembly 3 includes two groups of driving rollers 32 rotatably connected to the inner cavity of the frame 1, one end of one group of driving rollers 32 penetrates the frame 1 and is driven by a servo motor 31, and both groups of driving rollers 32 are drivingly connected to a conveyor belt 33, and a plurality of groups of fixing plates 35 are evenly spaced on the upper surface of the conveyor belt 33, and the upper surfaces of the plurality of groups of fixing plates 35 are all clamped with a module body 5;

[0025] The degumming assembly 7 includes a first cylinder 71, a mounting plate 72 and a square tube cutter 75. The first cylinder 71 is installed in the middle of the upper surface of the protective box 6. The telescopic end of the first cylinder 71 passes through the protective box 6 and is fixedly connected to the upper surface of the mounting plate 72. The square tube cutter 75 is arranged directly below the mounting plate 72. The square tube cutter 75 is detachably connected to the mounting plate 72 through multiple sets of connecting bolts 74. Four sets of protrusions 76 are arranged at equal angles on the lower surface of the square tube cutter 75.

[0026] A second through hole 37 is provided in the middle of the upper surface of the fixed plate 35, and a first through hole 34 connected to the second through hole 37 is provided on the upper surface of the conveyor belt 33. A plurality of positioning blocks 36 are provided on the upper surface of the fixed plate 35. The positioning blocks 36 facilitate the robot to clamp the grasped module body 5 on the fixed plate 35, thereby facilitating continuous transportation of the module body 5.

[0027] A support plate 9 is fixedly connected to the inner cavity of the frame 1. The support plate 9 is arranged in the inner cavity of the conveyor belt 33. The upper surface of the support plate 9 is in conflict with the inner top of the conveyor belt 33. The support plate 9 is used to support the conveyor belt 33 at the degumming position, thereby ensuring the stability of the conveyor belt 33 when the overflow glue on the module body 5 is cut off, avoiding deformation of the conveyor belt 33, and improving the quality of the module body 5 after degumming.

[0028] A second cylinder 10 is provided in the middle of the lower surface of the support plate 9, and a push plate 11 is fixedly connected to the telescopic end of the second cylinder 10. The inner diameter of the push plate 11 is smaller than the inner diameter of the first through hole 34. The push plate 11 is driven by the second cylinder 10 to push the module body 5 after degumming out of the fixed plate 35, thereby facilitating the module body 5 to enter the next process.

[0029] Baffles 73 are fixedly connected to both ends of the lower surface of the mounting plate 72, and the height of the baffles 73 is the same as the height of the cutter. A telescopic rod 77 is fixedly connected to the top of the inner cavity of the square tube cutter 75, and a spring 79 is sleeved on the outer side of the telescopic rod 77. A pressure plate 78 is fixedly connected to the lower end of the telescopic rod 77. The pressure plate 78 on the telescopic rod 77 contacts the module body 5, thereby preventing the module body 5 from shaking when the square tube cutter 75 cuts the overflow glue, thereby improving the quality of the module body 5.

[0030] The bottom of the inner cavity of the frame 1 is inclined, a support frame 2 is arranged below the frame 1, a fan 8 is arranged on one side of the protective box 6, a glue discharge hole 39 is opened in the middle of one side of the frame 1, and a collecting component 4 is arranged on one side of the frame 1. The fan 8 is used to blow the overflow glue cut off by the glue removal component 7 out of the conveyor belt 33, and then collect it through the collecting component 4, thereby reducing the workload of the staff to clean up the overflow glue.

[0031] The collecting assembly 4 includes a collecting box 41, one side of which is provided with a glue inlet hole 43 and two groups of card slots 44, the glue inlet hole 43 is communicated with the glue discharge hole 39, one side of the frame 1 is fixedly connected with a hanger 38 engaged with the two groups of card slots 44, and the other side of the collecting box 41 is provided with an observation window 42, the collecting box 41 is conveniently disassembled and assembled through the hanger 38, and the collected overflow glue can be observed through the observation window 42, so that the overflow glue in the collecting box 41 can be cleaned.

[0032] When in use, the module body 5 is clamped by the mechanical gripper and then engaged with the positioning block 36 on the fixed plate 35, so that the servo motor 31 drives the driving roller 32 to rotate, and the driving roller 32 drives the conveyor belt 33 to transport the fixed plate 35 at a fixed interval, so that the module body 5 on the fixed plate 35 moves at a fixed distance. When the fixed plate 35 moves to the bottom of the degumming component 7, the fan 8 and the first cylinder 71 are started, and the first cylinder 71 drives the mounting plate 72 to descend, so that the baffle 73 closes the inlet and outlet holes of the protective box 6, and then the square tube cutter 75 cuts off the overflow glue around the module body 5, and under the action of the protrusion 76 The overflow glue is disconnected to avoid the overflow glue frame on the outside of the module body 5. Under the action of the fan 8, the cut overflow glue falls into the collection box 41 through the glue discharge hole 39 and the glue inlet hole 43, thereby completing the collection of the cut overflow glue, reducing the workload of the staff, completing the glue removal work of a group of module bodies 5, repeating the above operations, and then facilitating continuous glue removal of the module body 5, improving the glue removal efficiency, and the second cylinder 10 drives the push block to be inserted into the first through hole 34 to separate the module body 5 from the positioning block 36, and slides through the shoe upper at the bottom of the frame 1 to the next process, thereby improving the production efficiency of the module.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A debonding assembly for a silicon carbide power module, comprising a frame (1), characterized in that: The inner cavity of the frame (1) is provided with a conveying component (3), a protection box (6) is provided above the frame (1), and the inner cavity of the protection box (6) is provided with a degumming component (7); The conveying assembly (3) comprises two groups of driving rollers (32) rotatably connected to the inner cavity of the frame (1), one end of one group of driving rollers (32) passes through the frame (1) and is driven by a servo motor (31), the two groups of driving rollers (32) are both connected to a conveyor belt (33), a plurality of groups of fixing plates (35) are arranged at equal intervals on the upper surface of the conveyor belt (33), and the upper surfaces of the plurality of groups of fixing plates (35) are all clamped with a module body (5); The degumming assembly (7) comprises a first cylinder (71), a mounting plate (72) and a square tube cutter (75); the first cylinder (71) is mounted on the middle part of the upper surface of the protection box (6); the telescopic end of the first cylinder (71) penetrates the protection box (6) and is fixedly connected to the upper surface of the mounting plate (72); the square tube cutter (75) is arranged directly below the mounting plate (72); the square tube cutter (75) is detachably connected to the mounting plate (72) by a plurality of groups of connecting bolts (74); and four groups of protrusions (76) are arranged at equal angles on the lower surface of the square tube cutter (75).

2. The debonding assembly for a silicon carbide power module according to claim 1, characterized in that: A second through hole (37) is provided in the middle of the upper surface of the fixing plate (35), a first through hole (34) connected to the second through hole (37) is provided on the upper surface of the conveyor belt (33), and a plurality of positioning blocks (36) are provided on the upper surface of the fixing plate (35).

3. The debonding assembly for a silicon carbide power module according to claim 2, characterized in that: A support plate (9) is fixedly connected to the inner cavity of the frame (1), and the support plate (9) is arranged in the inner cavity of the conveyor belt (33). The upper surface of the support plate (9) is in contact with the inner top of the conveyor belt (33).

4. The debonding assembly for a silicon carbide power module according to claim 3, characterized in that: A second cylinder (10) is provided in the middle of the lower surface of the support plate (9), and a push plate (11) is fixedly connected to the telescopic end of the second cylinder (10), and the inner diameter of the push plate (11) is smaller than the inner diameter of the first through hole (34).

5. The debonding assembly for a silicon carbide power module according to claim 4, characterized in that: Both ends of the lower surface of the mounting plate (72) are fixedly connected with baffles (73), the height of the baffles (73) being the same as the height of the cutter, a telescopic rod (77) is fixedly connected to the top of the inner cavity of the square tube cutter (75), a spring (79) is sleeved on the outer side of the telescopic rod (77), and a pressing plate (78) is fixedly connected to the lower end of the telescopic rod (77).

6. The debonding assembly for a silicon carbide power module according to claim 1, characterized in that: The bottom of the inner cavity of the frame (1) is arranged at an angle, a support frame (2) is arranged below the frame (1), a fan (8) is arranged on one side of the protection box (6), a glue discharge hole (39) is opened in the middle of one side of the frame (1), and a collection component (4) is arranged on one side of the frame (1).

7. The debonding assembly for a silicon carbide power module according to claim 6, characterized in that: The collecting assembly (4) comprises a collecting box (41), one side of the collecting box (41) is provided with a glue inlet hole (43) and two groups of card slots (44), the glue inlet hole (43) is connected to the glue discharge hole (39), one side of the frame (1) is fixedly connected with a hanging piece (38) that is card-engaged with the two groups of card slots (44), and the other side of the collecting box (41) is provided with an observation window (42).

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