Heat-conducting silicone grease coating device of IGBT (Insulated Gate Bipolar Translator) module

Abstract

The invention provides a heat-conducting silicone grease coating device of an IGBT (Insulated Gate Bipolar Translator) module, and relates to the field of coating devices. The heat-conducting silicone grease coating device of the IGBT module comprises a workbench, a first linkage mechanism and a second linkage mechanism are slidably embedded in the positions, close to the rear end, of the upper end face of the workbench in a front-back staggered mode, and two station tables are slidably embedded in the positions, close to the front end, of the upper end face of the workbench in a front-back staggered mode; a mounting base is fixedly arranged at the position, close to the front end, of one side of the upper end face of the workbench, first electric telescopic rods are mounted at the front end and the rear end of the upper end face of the mounting base correspondingly, and coating mechanisms are mounted at the telescopic ends of the lower ends of the two first electric telescopic rods correspondingly. A first linkage rack is fixedly arranged on the rear side of the first linkage plate, and the second linkage mechanism comprises a second linkage plate. According to the device, through integrated design, automatic control and an efficient working process, the installation efficiency and quality of the IGBT module and the coating efficiency and quality of the heat-conducting silicone grease are remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of coating devices, in particular to a thermal conductive silicone grease coating device for an IGBT module. Background Art

[0002] IGBT module is a modular semiconductor product formed by IGBT (insulated gate bipolar transistor chip) and FWD (freewheeling diode chip) through a specific circuit bridge package. The packaged IGBT module is directly used in inverters, UPS uninterruptible power supplies and other equipment. As the core component of the power module in the controller, the way the IGBT module is used directly affects the quality and life of the controller power module. Therefore, it is particularly important to ensure the use effect of the IGBT module, and its use effect depends on the quality of its own heat dissipation. In the IGBT installation process, the coating of thermal conductive silicone grease is widely used. The thermal conductive silicone grease is coated between the heat sink and the IGBT substrate to fill the gap between the IGBT and the heat sink, thereby increasing the heat exchange efficiency between the heat sink and the IGBT, improving the heat dissipation effect of the IGBT, and improving the reliability and service life of the IGBT. It can be seen that meeting the coating process requirements of thermal conductive silicone grease is the key to ensuring the quality and service life of the IGBT. In order to ensure that the thermal conductive silicone grease is evenly distributed on the IGBT, its coating process is crucial.

[0003] Traditional thermal grease coating is mostly done manually, using a knife or a small bamboo piece to dig out an appropriate amount of thermal grease, and then manually coating each part. Because the amount of thermal grease dug out by the small bamboo piece and the coating uniformity are difficult to control manually, the coating thickness and shape are uneven. Such uneven coating can easily cause a gap between the semiconductor device bottom plate and the heat sink, affecting the heat dissipation effect of the semiconductor device and may also affect the service life of the semiconductor device. At the same time, coating too thick and too much thermal grease can easily cause a waste of thermal grease materials and affect the appearance and quality of the entire product.

[0004] A thermal grease coating device for an IGBT module proposed in the prior art (CN117920536A) can adjust the distance between the scraper and the screen, but it still uses manual scraping. At the same time, the circular hole or rectangular hole design still has uneven coating density when coating the thermal grease, and it is impossible to achieve a better coating effect with highly uniform density. Not only is the coating efficiency low, but the operation is not convenient and the workload of workers is large. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a thermal grease coating device for an IGBT module, which solves the problem of manual scraping and uneven coating density when the thermal grease is coated using a circular hole or rectangular hole design, and cannot achieve a better coating effect with highly uniform density. Not only is the coating efficiency low, but the operation is not convenient and the workload of workers is high.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a thermal conductive silicone grease coating device for an IGBT module, comprising a workbench, a first linkage mechanism and a second linkage mechanism are respectively provided with a sliding embedding arrangement at the rear end of the upper end surface of the workbench, and two workstations are respectively provided with a sliding embedding arrangement at the front end of the upper end surface of the workbench, and a mounting seat is fixedly provided at the front end of one side of the upper end surface of the workbench, and a first electric telescopic rod is installed at the front and rear ends of the upper end surface of the mounting seat, and a coating mechanism is installed at the telescopic ends of the lower ends of the two first electric telescopic rods;

[0009] The No. 1 linkage mechanism comprises a No. 1 linkage plate, a No. 1 linkage rack is fixedly arranged at the rear side of the No. 1 linkage plate, the No. 2 linkage mechanism comprises a No. 2 linkage plate, a No. 2 linkage rack is fixedly arranged at the front end of the No. 2 linkage plate, and a driving gear is meshed between the No. 1 linkage rack and the No. 2 linkage rack;

[0010] The two workstations each include a workstation seat, a shell is fixedly provided on one side of the inner wall of the workstation seat, a push plate is embedded on one side of the inner wall of the shell, a plurality of connecting springs are fixedly provided on one side of the push plate, and an inner plate is fixedly provided on one end of the connecting spring away from the push plate, a protective plate is fixedly provided on one end of the inner plate away from the connecting spring, and an adjusting rod is rotatably connected to the side of the push plate away from the connecting spring;

[0011] The coating mechanism includes a cover plate, a mounting plate is fixedly arranged at the midpoint of one side of the upper end surface of the cover plate, a No. 2 motor is fixedly arranged on one side of the outer wall of the mounting plate and a threaded rod is fixedly arranged on the output end, a moving block is threadedly sleeved on the outer side of the threaded rod, a No. 2 electric telescopic rod is fixedly arranged at the lower end of the moving block and a smoothing scraper is fixedly arranged at the telescopic end of the lower end of the No. 2 electric telescopic rod, and a plurality of coating nozzles are fixedly arranged on one side of the outer wall of the smoothing scraper.

[0012] Preferably, a movable groove No. 1 and a movable groove No. 2 are respectively provided on the upper end surface of the workbench near the rear end, the No. 1 linkage mechanism is slidably embedded in the No. 2 movable groove, and the No. 2 linkage mechanism is slidably embedded in the No. 1 movable groove, and the No. 1 movable groove and the No. 2 movable groove are connected by a No. 1 through hole.

[0013] Preferably, a mounting groove is provided on the upper end surface of the workbench at the midpoint between the No. 1 movable groove and the No. 2 movable groove, a No. 1 motor is installed in the mounting groove, and the driving gear is fixedly arranged on the driving shaft at the output end of the No. 1 motor.

[0014] Preferably, a movable groove No. 1 and a movable groove No. 2 are respectively provided at the front end of the upper end surface of the workbench, and the two workstations are respectively slidably embedded in the movable groove No. 1 and the movable groove No. 2. The depth of the movable groove No. 1 is less than the depth of the movable groove No. 2, and a No. 2 through hole is provided on the rear side of the inner wall of the movable groove No. 1 and the movable groove No. 2.

[0015] Preferably, two No. 1 fixing plates and two No. 2 fixing plates are slidably embedded in the two No. 2 through holes respectively, one end of the two No. 1 fixing plates is connected to the No. 1 linkage mechanism and the other end is fixedly connected to one of the two workstations, one end of the two No. 2 fixing plates is connected to the No. 2 linkage mechanism and the other end is fixedly connected to the other one of the two workstations.

[0016] Preferably, one end of the adjusting rod away from the pushing plate passes through an outer wall of one side of the station seat, and the adjusting rod is threadedly sleeved with the station seat.

[0017] Preferably, a slide groove is provided at the midpoint of the upper end surface of the cover plate, the second electric telescopic rod is slidably arranged in the slide groove, and vertical plates are fixedly arranged at the front and rear ends of the upper end of the cover plate at the slide groove, and the upper ends of the two vertical plates are fixedly connected to the extended end of the lower end of the first electric telescopic rod.

[0018] Preferably, a side plate is fixedly provided at the midpoint of one side of the outer wall of the cover plate, and the end of the threaded rod away from the second motor is rotatably connected to the side plate.

[0019] Preferably, both sides of the lower end of the smoothing scraper are inclined sections, and a plurality of coating nozzles are installed on one of the inclined sections and are connected to a feeding device through a conduit.

[0020] Working principle: When using the thermal grease coating device, first install the IGBT module to be coated on the workbench, that is, embed the IGBT module into the workbench, and use the retractable inner plate on one side to cooperate with the protective plate to assist in clamping the IGBT module to achieve a quick installation and fixing effect. At the same time, the elastic deformation of the inner connecting spring can be changed by twisting the adjustment rod on one side as needed, so that the clamping change amount can be changed; because the thermal grease coating device is provided with two workbenchs, the two workbenchs are in a front-to-back dislocation state, so that the integrated linkage use effect of installation and coating can be achieved at the same time;

[0021] After the IGBT module is installed and fixed, the No. 1 motor at the upper end is used to start the driving gear at the output end. Since the linkage racks of the No. 1 linkage mechanism and the No. 2 linkage mechanism, which are displaced in front and back, are meshed with the driving gear, and the two workstations at the front end are respectively connected to the No. 1 linkage mechanism and the No. 2 linkage mechanism, the No. 1 linkage mechanism and the No. 2 linkage mechanism can complete the alternating movement of the two workstations when they are alternately moved. When the workstation reaches the lower end of the mounting seat during the alternating movement, the No. 1 motor stops moving, and the No. 1 electric telescopic rod starts to drive the coating mechanism at the lower end to move downward, and the coating mechanism The entire workbench is covered, and then the length of the No. 2 electric telescopic rod is extended according to the preset data so that the smoothing scraper and coating nozzle at its lower end are aligned with the upper surface of the IGBT module. At this time, the coating nozzle sprays an appropriate amount of thermal grease on the upper surface of the IGBT module, and the No. 2 motor at the upper end is started to drive the threaded rod at the output end to drive the outer moving block to move horizontally. During the movement, the smoothing scraper smoothes and scrapes off the thermal grease at the upper end, and the excess thermal grease is removed to form a relatively uniform thermal grease layer; then the No. 1 motor is started to achieve alternation again, thereby quickly completing the alternating automatic coating and rapid installation and replacement processing efficiency.

[0022] (III) Beneficial effects

[0023] The present invention provides a thermal conductive silicone grease coating device for an IGBT module, which has the following beneficial effects:

[0024] The present invention provides a thermal grease coating device for an IGBT module. The front-to-back offset design of two workstations allows simultaneous installation and coating, thereby significantly improving production efficiency. A retractable and adjustable inner plate and adjustment rod are adopted, so that the clamping of the IGBT module becomes flexible, and installation and fixation are convenient. Automatic movement is achieved through a motor-driven linkage mechanism, which reduces manual operation and improves the accuracy and consistency of operation. The coating mechanism is designed in conjunction with a smoothing scraper to ensure uniform coating of the thermal grease, thereby avoiding the problem of poor heat conduction caused by uneven coating, that is, the device design allows the alternating coating and installation processes to be carried out quickly, optimizes the production process, improves processing efficiency, and reduces production downtime. The device significantly improves the installation efficiency and quality of the IGBT module and the coating of the thermal grease through integrated design, automated control, and efficient work flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the shaft side structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the workbench;

[0027] Figure 3It is a schematic diagram of the linkage structure of the first linkage mechanism and the second linkage structure of the present invention;

[0028] Figure 4 For the present invention Figure 3 Another structural schematic diagram of;

[0029] Figure 5 It is a structural schematic diagram of the mounting seat of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the workstation of the present invention;

[0031] Figure 7 For the present invention Figure 6 Another perspective structural diagram of;

[0032] Figure 8 For the present invention Figure 6 Schematic diagram of the top-down structure;

[0033] Fig. 9 It is a schematic diagram of the top view of the coating mechanism of the present invention;

[0034] Fig.10 It is a top view structural schematic diagram of the coating mechanism of the present invention.

[0035] Among them, 1. No. 1 linkage mechanism; 101. No. 1 linkage plate; 102. No. 1 linkage rack; 2. No. 1 movable slot; 3. No. 1 motor; 4. Workbench; 5. No. 2 linkage mechanism; 501. No. 2 linkage plate; 502. No. 2 linkage rack; 6. No. 2 movable slot; 7. Mounting seat; 8. No. 1 movable slot; 9. No. 2 movable slot; 10. Workstation table; 1001. Workstation seat; 1002. Protective plate; 1003. Shell; 1004. Adjustment rod; 1005. Inner plate; 1006. Connecting spring; 1007, push plate; 11, mounting groove; 12, through hole No. 1; 13, through hole No. 2; 14, fixed plate No. 1; 15, fixed plate No. 2; 16, driving gear; 17, electric telescopic rod No. 1; 18, coating mechanism; 1801, threaded rod; 1802, side plate; 1803, vertical plate; 1804, electric telescopic rod No. 2; 1805, mounting plate; 1806, motor No. 2; 1807, moving block; 1808, cover plate; 1809, smoothing scraper; 19, coating nozzle; 20, slide groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] like Figure 1-10 As shown, an embodiment of the present invention provides a thermal conductive silicone grease coating device for an IGBT module, comprising a workbench 4, a first linkage mechanism 1 and a second linkage mechanism 5 are respectively provided with a sliding embedding arrangement staggered front and back at the rear end of the upper end surface of the workbench 4, two workstations 10 are respectively provided with a sliding embedding arrangement staggered front and back at the front end of the upper end surface of the workbench 4, a mounting seat 7 is fixedly provided at one side of the upper end surface of the workbench 4 near the front end, a first electric telescopic rod 17 is installed at the front and rear ends of the upper end surface of the mounting seat 7, and a coating mechanism 18 is installed at the telescopic ends of the lower ends of the two first electric telescopic rods 17;

[0039] Specifically, the front-to-back offset design of the two workstations 10 allows installation and coating to be carried out simultaneously, avoiding the time and workstations for replacing coating tools, reducing the loss of thermal grease, saving production space, greatly improving coating efficiency, coating quality and coating consistency, and improving product quality. At the same time, the design of the No. 1 electric telescopic rod 17 can realize the rapid height adjustment of the coating mechanism 18 to meet the height adjustment function required for production.

[0040] Reference Figure 1-Figure 3 The first linkage mechanism 1 includes a first linkage plate 101, a first linkage rack 102 is fixedly arranged at the rear side of the first linkage plate 101, the second linkage mechanism 5 includes a second linkage plate 501, a second linkage rack 502 is fixedly arranged at the front end of the second linkage plate 501, and a driving gear 16 is meshed between the first linkage rack 102 and the second linkage rack 502;

[0041] Specifically, during use, when the driving gear 16 rotates, the No. 1 linkage rack 102 and the No. 2 linkage rack 502 at the front and rear ends are meshed and connected therewith, that is, the driving gear 16 completes the synchronous driving of the No. 1 linkage rack 102 and the No. 2 linkage rack 502 when rotating, and because the No. 1 linkage rack 102 and the No. 2 linkage rack 502 are in front and back staggered positions, the opposite translation effect of the movement direction of the No. 1 linkage rack 102 and the No. 2 linkage rack 502 is achieved, thereby achieving alternating movement.

[0042] Reference Figure 1-Figure 2 The upper end surface of the workbench 4 is provided with a No. 1 movable groove 2 and a No. 2 movable groove 6 respectively at the rear end thereof, the No. 1 linkage mechanism 1 is slidably embedded in the No. 2 movable groove 6, the No. 2 linkage mechanism 5 is slidably embedded in the No. 1 movable groove 2, and the No. 1 movable groove 2 and the No. 2 movable groove 6 are connected via a No. 1 through hole 12;

[0043] Specifically, the No. 1 movable groove 2 and the No. 2 movable groove 6 are connected, that is, the No. 1 through hole 12 plays the role of a motion track groove, ensuring the smooth translational movement of the No. 1 linkage rack 102 and the No. 2 linkage rack 502, and the driving gear 16 is also located in the No. 1 through hole 12, ensuring the smooth rotation driving effect of the driving gear 16.

[0044] Reference Figure 1-Figure 2 The upper end surface of the workbench 4 is provided with a mounting groove 11 at the midpoint between the No. 1 movable groove 2 and the No. 2 movable groove 6. The No. 1 motor 3 is installed in the mounting groove 11, and the driving gear 16 is fixedly arranged on the driving shaft at the output end of the No. 1 motor 3;

[0045] Specifically, when in use, the driving gear 16 is driven by the No. 1 motor 3. The No. 1 motor 3 adopts a servo motor and can move and stop automatically according to intelligent operation. It does not require manual operation and reduces the amount of manual labor.

[0046] Reference Figure 1-Figure 2 The upper end surface of the workbench 4 is provided with a first moving groove 8 and a second moving groove 9 at the front end, and two workstations 10 are respectively slidably embedded in the first moving groove 8 and the second moving groove 9. The depth of the first moving groove 8 is less than the depth of the second moving groove 9. The rear sides of the inner walls of the first moving groove 8 and the second moving groove 9 are provided with a second through hole 13;

[0047] Specifically, since the two workstations 10 are displaced and slid in the No. 1 moving groove 8 and the No. 2 moving groove 9 respectively, the movement of the workstation 10 is linked by the two linkage mechanisms at the rear end, that is, while ensuring the smooth alternating movement of the workstation 10, the height position is lowered to change, so that no movement interference occurs during the alternating movement, and the structure is simple, and it is convenient and quick to use.

[0048] Reference Figure 1-Figure 3 Two No. 1 fixing plates 14 and two No. 2 fixing plates 15 are respectively slidably embedded in the two No. 2 through holes 13, one end of the two No. 1 fixing plates 14 is connected to the No. 1 linkage mechanism 1 and the other end is fixedly connected to one of the two workstations 10, and one end of the two No. 2 fixing plates 15 is connected to the No. 2 linkage mechanism 5 and the other end is fixedly connected to the other of the two workstations 10;

[0049] Specifically, it can be seen from the rotation of the driving gear 16 that drives the front-to-rear displaced linkage mechanism No. 1 and linkage mechanism No. 2 5 to perform lateral alternating motion. When the linkage mechanism No. 1 and linkage mechanism No. 2 5 perform lateral alternating motion, the two No. 1 fixed plates 14 and the two No. 2 fixed plates 15 at the front end also perform alternating motion. In order to ensure that the two No. 1 fixed plates 14 and the two No. 2 fixed plates 15 are alternately moved smoothly, it is necessary to adjust their upper and lower heights, that is, the two No. 1 fixed plates 14 can be moved on the upper ends of the two No. 2 fixed plates 15, thereby completing the alternating motion of the two workstations 10.

[0050] Reference Figure 6-Figure 8 , the two workstations 10 both include a workstation seat 1001, a shell 1003 is fixedly provided on one side of the inner wall of the workstation seat 1001, a push plate 1007 is embedded on one side of the inner wall of the shell 1003, a plurality of connecting springs 1006 are fixedly provided on one side of the push plate 1007, and an inner plate 1005 is fixedly provided on one end of the connecting spring 1006 away from the pushing plate 1007, a protective plate 1002 is fixedly provided on one end of the inner plate 1005 away from the connecting spring 1006, and an adjusting rod 1004 is rotatably connected to one side of the pushing plate 1007 away from the connecting spring 1006; one end of the adjusting rod 1004 away from the pushing plate 1007 passes through the outer wall of one side of the workstation seat 1001, and the adjusting rod 1004 is threadedly sleeved with the workstation seat 1001;

[0051] Specifically, when in use, the IGBT module is embedded into the work station seat 1001. After the IGBT module is embedded, it generates a thrust on the inner plate 1005 on one side. The inner plate 1005 squeezes the connecting spring 1006 on one side to cause it to shrink. The spring restoring force of the connecting spring 1006 can realize the retractability of the inner plate 1005, and cooperate with the protective plate 1002 to assist in clamping the IGBT module, thereby achieving a quick installation and fixing effect. At the same time, the elastic deformation of the inner connecting spring 1006 can be changed by twisting the adjusting rod 1004 on one side as needed, so that the clamping change amount can be changed.

[0052] Reference Figure 9-10The coating mechanism 18 includes a cover plate 1808, a mounting plate 1805 is fixedly provided at the midpoint of one side of the upper end surface of the cover plate 1808, a No. 2 motor 1806 is fixedly provided on one side of the outer wall of the mounting plate 1805, and a threaded rod 1801 is fixedly provided on the output end, a moving block 1807 is threadedly sleeved on the outer side of the threaded rod 1801, a No. 2 electric telescopic rod 1804 is fixedly provided on the lower end of the moving block 1807, and a smoothing scraper 1809 is fixedly provided on the telescopic end of the lower end of the No. 2 electric telescopic rod 1804, and a plurality of coating nozzles 19 are fixedly provided on one side of the outer wall of the smoothing scraper 1809; a slide groove 20 is provided at the midpoint of the upper end surface of the cover plate 1808, and the No. 2 electric telescopic rod 1804 is slidably provided in the slide groove 20, and vertical plates 1803 are fixedly provided at the front and rear ends of the upper end of the cover plate 1808 at the slide groove 20, and the upper ends of the two vertical plates 1803 are fixedly connected to the extended end of the lower end of the No. 1 electric telescopic rod 17;

[0053] Specifically, during use, when the work station 10 reaches the lower end of the mounting seat 7, the No. 1 motor 3 stops moving, the No. 1 electric telescopic rod 17 starts to drive the coating mechanism 18 at the lower end to move downward, and the coating mechanism 18 covers the entire work station 10. Then, according to the preset data, the length of the No. 2 electric telescopic rod 1804 is extended so that the smoothing scraper 1809 and the coating nozzle 19 at its lower end are aligned with the upper surface of the IGBT module. At this time, the coating nozzle 19 sprays an appropriate amount of thermal grease on the upper surface of the IGBT module, and the No. 2 motor 1806 at the upper end starts to drive the threaded rod 1801 at the output end to drive the outer moving block 1807 to move horizontally. During the movement, the smoothing scraper 1809 at the lower end is driven to smooth and scrape off the thermal grease at the upper end, and the excess thermal grease is removed to form a relatively uniform thermal grease layer.

[0054] Reference Figure 9-10 A side plate 1802 is fixedly provided at the midpoint of one side of the outer wall of the cover plate 1808, and one end of the threaded rod 1801 away from the second motor 1806 is rotatably connected to the side plate 1802; both sides of the lower end of the leveling scraper 1809 are inclined sections, and a plurality of coating nozzles 19 are installed on one of the inclined sections and are connected to a feeding device through a conduit;

[0055] Specifically, installing one end of the threaded rod 1801 on the side plate 1802 can provide support to prevent it from swinging and falling; and the lower end of the smoothing scraper 1809 adopts an inclined surface, which can effectively ensure the installation of the coating nozzle 19 and the use effect of smoothing and scraping.

[0056] The device significantly improves the efficiency and quality of IGBT module installation and thermal grease coating through integrated design, automated control and efficient workflow.

[0057] 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 thermal conductive silicone grease coating device for an IGBT module, comprising a workbench (4), characterized in that: The upper end surface of the workbench (4) is provided with a first linkage mechanism (1) and a second linkage mechanism (5) respectively arranged in a sliding manner displaced forward and backward at the rear end, and two workstations (10) are respectively arranged in a sliding manner displaced forward and backward at the front end of the upper end surface of the workbench (4). A mounting seat (7) is fixedly provided on one side of the upper end surface of the workbench (4) near the front end, and a first electric telescopic rod (17) is installed at the front and rear ends of the upper end of the mounting seat (7), and a coating mechanism (18) is installed at the telescopic ends of the lower ends of the two first electric telescopic rods (17); The first linkage mechanism (1) comprises a first linkage plate (101), a first linkage rack (102) is fixedly arranged at the rear side of the first linkage plate (101), the second linkage mechanism (5) comprises a second linkage plate (501), a second linkage rack (502) is fixedly arranged at the front end of the second linkage plate (501), and a driving gear (16) is meshed between the first linkage rack (102) and the second linkage rack (502); The two workstations (10) both comprise a workstation seat (1001), a shell (1003) being fixedly provided on one side of the inner wall of the workstation seat (1001), a push plate (1007) being embedded in one side of the inner wall of the shell (1003), a plurality of connecting springs (1006) being fixedly provided on one side of the push plate (1007), and an inner plate (1005) being fixedly provided on one end of the connecting spring (1006) away from the push plate (1007), a protective plate (1002) being fixedly provided on one end of the inner plate (1005) away from the connecting spring (1006), and an adjusting rod (1004) being rotatably connected to one side of the push plate (1007) away from the connecting spring (1006); The coating mechanism (18) comprises a cover plate (1808), a mounting plate (1805) is fixedly arranged at the midpoint of one side of the upper end surface of the cover plate (1808), a No. 2 motor (1806) is fixedly arranged on one side of the outer wall of the mounting plate (1805), and a threaded rod (1801) is fixedly arranged on the output end, a moving block (1807) is threadedly sleeved on the outer side of the threaded rod (1801), a No. 2 electric telescopic rod (1804) is fixedly arranged at the lower end of the moving block (1807), and a smoothing scraper (1809) is fixedly arranged at the telescopic end of the lower end of the No. 2 electric telescopic rod (1804), and a plurality of coating nozzles (19) are fixedly arranged on one side of the outer wall of the smoothing scraper (1809).

2. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: The upper end surface of the workbench (4) is provided with a first movable groove (2) and a second movable groove (6) respectively at the rear end thereof; the first linkage mechanism (1) is slidably embedded in the second movable groove (6); the second linkage mechanism (5) is slidably embedded in the first movable groove (2); the first movable groove (2) and the second movable groove (6) are connected via a first through hole (12).

3. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: The upper end surface of the workbench (4) is provided with a mounting groove (11) at a midpoint between the No. 1 movable groove (2) and the No. 2 movable groove (6), a No. 1 motor (3) is mounted in the mounting groove (11), and the driving gear (16) is fixedly arranged on a driving shaft at the output end of the No. 1 motor (3).

4. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: The upper end surface of the workbench (4) is provided with a first movable groove (8) and a second movable groove (9) respectively near the front end, and the two workstations (10) are respectively slidably embedded in the first movable groove (8) and the second movable groove (9), the depth of the first movable groove (8) is less than the depth of the second movable groove (9), and the rear sides of the inner walls of the first movable groove (8) and the second movable groove (9) are provided with a second through hole (13).

5. The thermal conductive silicone grease coating device for an IGBT module according to claim 4, characterized in that: Two No. 1 fixing plates (14) and two No. 2 fixing plates (15) are respectively slidably embedded in the two No. 2 through holes (13); one end of the two No. 1 fixing plates (14) is connected to the No. 1 linkage mechanism (1) and the other end is fixedly connected to one of the two workstations (10); one end of the two No. 2 fixing plates (15) is connected to the No. 2 linkage mechanism (5) and the other end is fixedly connected to the other of the two workstations (10).

6. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: One end of the adjusting rod (1004) away from the pushing plate (1007) passes through the outer wall of one side of the work station seat (1001), and the adjusting rod (1004) is threadedly sleeved with the work station seat (1001).

7. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: A slide groove (20) is provided at the midpoint of the upper end surface of the cover plate (1808), and the second electric telescopic rod (1804) is slidably arranged in the slide groove (20). The upper end of the cover plate (1808) is fixedly provided with vertical plates (1803) at the front and rear ends of the slide groove (20), and the upper ends of the two vertical plates (1803) are fixedly connected to the extended end of the lower end of the first electric telescopic rod (17).

8. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: A side plate (1802) is fixedly provided at the midpoint of one side of the outer wall of the cover plate (1808), and one end of the threaded rod (1801) away from the second motor (1806) is rotatably connected to the side plate (1802).

9. The thermal conductive silicone grease coating device for an IGBT module according to claim 1, characterized in that: Both sides of the lower end of the smoothing scraper (1809) are inclined sections, and a plurality of coating nozzles (19) are installed on one of the inclined sections and are connected to a feeding device through a conduit.

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