An IGBT module automatic curing device

Abstract

An IGBT module automatic curing device includes a transfer table device. Above the front part of the transfer table device, there is a small tray loading and unloading rack. On the left and right parts of the small tray loading and unloading rack, there are small tray transfer devices that match it. On the left and right sides of the small tray loading and unloading rack, there are small tray conveying devices that match the small tray transfer devices. Behind the transfer table device, there is a large tray conveying device that matches it. On the left and right sides behind the large tray conveying device, there are a baking device and a buffer device that match it respectively. The IGBT module automatic curing device of the present invention can realize full-automatic loading and unloading during the product curing process, effectively improve work efficiency, and can effectively avoid the situation that when the temperature of the cured product is high, it is easy to scald people when personnel make misoperations.

Description

Technical Field

[0001] The present invention relates to an automatic curing device for IGBT modules. Background Art

[0002] IGBT, also known as insulated gate bipolar transistor, is a composite fully controlled voltage-driven power semiconductor device composed of BJT (bipolar junction transistor) and MOS (insulated gate field effect transistor), combining the advantages of high input impedance of MOSFET and low on-state voltage drop of GTR.

[0003] Since the development of thyristors in the 1950s, the conversion and control of electric energy have entered the era of converters mainly carried by power semiconductor devices. In the 1970s, fully controlled devices such as gate turn-off thyristor (GTO), giant transistor (GTR), and power MOSFET appeared successively in power semiconductor devices. In the 1980s, IGBT was developed based on DMOS. IGBT combines the advantages of MOSFET and bipolar transistor, with flexible electric energy conversion methods, large power capacity, and high operating frequency.

[0004] IGBT technology has developed rapidly and its performance has been continuously improved. Currently, the mainstream IGBT chip technology is characterized by high-voltage planar gates and medium- and low-voltage trench gates, combined with field-stop buffer layer technology and transparent anode technology, achieving good on-state and dynamic characteristics, and having a wide safe operating area, making IGBT sufficient to replace other types of devices in high-power application fields. To increase the current capacity, multi-chip packaging technology has emerged, and IGBT modules with various current and voltage ratings, circuit forms, and packaging forms have been successively introduced. After more than twenty years of development, due to its superior performance, IGBT has become the "core" of power electronics and is widely used in rail transit, smart grid, electric vehicles, new energy and other fields.

[0005] Curing equipment is used for the glue curing of side frame glue modules and silica gel modules in the production process of packaged IGBT modules. Regarding the curing process of module products, this process requires manual placement and removal of products into and out of the oven, which not only has a large workload and low efficiency, but also has the problem that when the temperature of the cured product is high, it is easy to be scalded when personnel make misoperations. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an automatic curing device for IGBT modules, which can realize full-automatic loading and unloading during the product curing process, effectively improve work efficiency, and can effectively avoid the situation that when the temperature of the cured product is high, it is easy to be scalded when personnel make misoperations.

[0007] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0008] The present invention discloses an automatic curing device for IGBT modules, which is characterized in that: it includes a transfer table device, and above the front part of the transfer table device, there is a small tray loading and unloading rack; on the left and right parts of the small tray loading and unloading rack, there are small tray transfer devices that match it; on the left and right sides of the small tray loading and unloading rack, there are small tray conveying devices that match the small tray transfer devices; behind the transfer table device, there is a large tray conveying device that matches it; on the left and right sides behind the large tray conveying device, there are a baking device and a buffer device that match it respectively.

[0009] The transfer table device includes a workbench; on the workbench, there are several uniformly distributed large tray bases, and the large tray bases are in a "U" shape; behind the large tray bases, there is a large tray clamping port opposite to the large tray conveying device; on the inner walls of the upper left and right sides of the large tray bases, there are symmetrically arranged clamping steps; on the large tray bases, there are placed large trays that match them, and the left and right ends of the large trays are respectively clamped on the clamping steps; on the inner wall of the front side of the large tray bases, there is a large tray detection sensor; on the large trays, there are several uniformly distributed jacking holes; at the edge of the upper end hole of the jacking holes, there is a "square" shaped limit step; inside the workbench, there are several electric cylinders corresponding to the positions of the jacking holes; the upper end of the piston rod of the electric cylinder passes through the upper surface of the workbench and is provided with a small tray top plate, and the small tray top plate can move up and down through the jacking holes; on the upper surface of the workbench, there are several small tray detection sensors corresponding to the positions of the jacking holes.

[0010] In the middle of the front side wall of the large tray base, there is a longitudinal notch, and in front of the large tray base, there is a longitudinal alignment cylinder corresponding to the position of the longitudinal notch; on one side of the left and right sides of the large tray, there is a transverse notch, and on one side of the left and right sides of the transverse notch, there is a transverse alignment cylinder corresponding to the position of the transverse notch; at the end of the piston rod of the transverse alignment cylinder, there is a transverse alignment plate; at the end of the piston rod of the longitudinal alignment cylinder, there is a longitudinal alignment plate.

[0011] The small tray transfer device includes a gear rack slide on the small tray loading and unloading rack; the gear rack slide includes a slide base, and on the slide base, there is a servo motor that matches it; on the right side wall of the slide base, there is a transverse module; the moving body of the transverse module is connected with a longitudinal module, and the longitudinal module is perpendicular to the transverse module; both the transverse module and the longitudinal module are ball screw slides; the moving body of the longitudinal module is connected with a lifting support plate; on the lower surface of the right end of the lifting support plate, there is a clamping double acting cylinder; on both sides of the piston rod of the clamping double acting cylinder, there are positioning blocks; at the edge of the lower end of the positioning block, there is a limiting flange extending inwards; on the upper surface of the right end of the lifting support plate, there is a camera rack; on the upper left side of the camera rack, there is a vision camera.

[0012] The small pallet conveying device includes a small pallet conveying rack; symmetric conveying lines are provided on the front and rear sides of the small pallet conveying rack; a driving motor matching the conveying line is provided at one end of the small pallet conveying rack; a barcode scanner bracket is provided on one side of the small pallet conveying rack; a barcode scanner is provided at the upper end of the barcode scanner bracket; a lifting cylinder is provided on the lower surface of the other end of the small pallet conveying rack without the driving motor; the upper end of the piston rod of the lifting cylinder penetrates upward above the small pallet conveying rack and is provided with a lifting plate, and the lifting plate is located between the two conveying lines; a lifting detection sensor and a barcode scanning detection sensor are provided on the upper surface of the small pallet conveying rack; a lifting stop cylinder corresponding to the position of the lifting detection sensor and a barcode scanning stop cylinder corresponding to the position of the barcode scanning detection sensor are provided on the upper surface of the small pallet conveying rack.

[0013] The large pallet conveying device includes a large pallet conveying rack; symmetric walking guide rails are provided on the front and rear sides of the upper surface of the large pallet conveying rack; a walking mechanism matching the walking guide rails is provided on the walking guide rails; a rotary mechanism is provided at the center of the upper surface of the walking mechanism; a lifting mechanism is provided on the upper surface of the rotary mechanism; the lifting mechanism includes a lifting guide rail provided on the left inner wall, and a lifting seat matching the lifting guide rail is provided on the lifting guide rail; a first feeding module is provided on the lifting seat; a second feeding module is provided on the lifting seat; a moving plate is provided on the upper surface of the second feeding module; symmetric pressing cylinder plates are provided on the left and right sides of the upper surface of the moving plate; a pressing cylinder is provided on the pressing cylinder plate; a pressing block is provided at the lower end of the piston rod of the pressing cylinder; support bars corresponding to the positions of the pressing blocks are provided at the left and right ends of the moving plate, and the support bars are located directly below the pressing blocks; a side detection sensor is provided on the front left side of the lifting mechanism; a front detection sensor and a scanning sensor are provided on the upper surface of the moving plate.

[0014] The buffer device includes a buffer box; a number of evenly distributed buffer areas are provided on the side of the buffer box opposite to the large pallet conveying device; a number of longitudinally evenly distributed crossbars are provided on the inner walls on both sides of the buffer area.

[0015] The baking device includes an oven base; several ovens are provided above the oven base and are evenly distributed longitudinally; support feet are provided on both sides between the oven and the oven base and between the ovens; an oven opening that communicates with the internal space of the oven is provided on the front side of the oven; several shelves are provided on the inner walls of the left and right sides of the oven and are evenly distributed longitudinally; an oven door that matches the oven is hinged on the left side of the oven opening; a cylinder mounting seat is provided at the front end of the upper surface of the oven door; a driving cylinder is fixed on the cylinder mounting seat; an elbow joint is provided at the end of the piston rod of the driving cylinder, and the elbow joint is hinged on the upper surface of the left end of the oven door; two locking holes are provided at the upper and lower ends of the right end face of the oven door; two sets of locking cylinders corresponding to the positions of the locking holes are provided on the right side of the oven opening; a locking head that matches the locking hole is provided at the end of the piston rod of the locking cylinder, and the locking head is narrow on the left and wide on the right.

[0016] It further includes a protective fence that encloses the transfer table device, the small tray loading and unloading rack, the small tray material transfer device, the large tray conveying device, the baking device, and the buffer device; a control panel is provided on the protective fence; several evenly distributed maintenance openings are provided on the protective fence; a maintenance door that matches the maintenance opening is hinged on the maintenance opening.

[0017] The upper surface of the front part of the workbench is connected to the lower surface of the small tray loading and unloading rack through several evenly distributed support columns; a support plate is provided at the upper end of the piston rod of the electric cylinder; the upper surface of the support plate is connected to the lower surface of the small tray top plate through several support rods.

[0018] The beneficial effects of the present invention are:

[0019] Compared with the prior art, the IGBT module automatic curing equipment adopting the structure of the present invention can realize full-automatic loading and unloading during the product curing process, effectively improve work efficiency, and the oven door of the oven can be automatically opened and closed, without manually putting the product into or taking it out of the oven, effectively avoiding the situation that the personnel are easily scalded due to the high temperature of the cured product during misoperation. Moreover, with the automation of the IGBT module curing work, it can effectively save manpower and improve production capacity at the same time. In the case of mechanically transporting the IGBT module product, the amount of glue rippling of the module does not exceed 1 mm, and the curing data of the product can be stored, and the curing curve and historical data of each module can be queried. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the IGBT module automatic curing equipment of the present invention;

[0021] Figure 2 is the partial structural schematic diagram of the IGBT module automatic curing equipment of the present invention;

[0022] Figure 3It is a schematic structural diagram of the small tray conveying device at an angle;

[0023] Figure 4 It is a schematic structural diagram of the small tray conveying device at another angle;

[0024] Figure 5 It is a schematic structural diagram when the turntable device is assembled with the small tray loading and unloading rack;

[0025] Figure 6 It is Figure 5 An enlarged view of part A of;

[0026] Figure 7 It is Figure 5 An enlarged view of part B of;

[0027] Figure 8 It is Figure 5 An enlarged view of part C of;

[0028] Figure 9 It is a schematic structural diagram of the turntable device;

[0029] Figure 10 It is a schematic structural diagram of the large tray conveying device;

[0030] Figure 11 It is a schematic structural diagram of a part of the large tray conveying device;

[0031] Figure 12 It is a schematic structural diagram of the baking device;

[0032] Figure 13 It is a schematic structural diagram of the oven;

[0033] Figure 14 It is Figure 13 An enlarged view of part D of;

[0034] Figure 15 It is Figure 13 An enlarged view of part E of;

[0035] Figure 16 It is a schematic structural diagram when the small tray is placed on the large tray. Specific embodiments

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0037] Please refer to Figures 1 to 16, the present invention provides an IGBT module automatic curing device, including a transfer table device 1, and a small tray loading and unloading rack 2 is arranged above the front part of the transfer table device 1; small tray transfer devices 3 are arranged on the left and right parts of the small tray loading and unloading rack 2; small tray conveying devices 4 are arranged on the left and right sides of the small tray loading and unloading rack 2 and are matched with the small tray transfer devices 3; a large tray conveying device 5 is arranged behind the transfer table device 1; baking devices 6 and buffer devices 7 are respectively arranged on the left and right sides behind the large tray conveying device 5 and are matched with it.

[0038] The transfer table device 1 includes a workbench 8; a number of large tray bases 9 are evenly distributed on the workbench 8, and the large tray bases 9 are in a "U" shape; a large tray clamping port 10 opposite to the large tray conveying device 5 is arranged behind the large tray base 9; symmetrical clamping steps 11 are arranged on the inner walls of the upper left and right sides of the large tray base 9; a large tray 12 matched with it is placed on the large tray base 9, and the left and right ends of the large tray 12 are respectively clamped on the clamping steps 11; a large tray detection sensor 13 is arranged on the inner wall of the front side of the large tray base 9; a number of jacking holes 14 are evenly distributed on the large tray 12; a limiting step 15 in a "square" shape is arranged on the edge of the upper end orifice of the jacking hole 14; a number of electric cylinders 16 corresponding to the positions of the jacking holes 14 are arranged in the workbench 8; the upper end of the piston rod of the electric cylinder 16 penetrates upward through the upper surface of the workbench 8 and is provided with a small tray top plate 17, and the small tray top plate 17 can move up and down through the jacking hole 14; a number of small tray detection sensors 18 corresponding to the positions of the jacking holes 14 are arranged on the upper surface of the workbench 8.

[0039] A longitudinal notch 19 is arranged in the middle of the front side wall of the large tray base 9, and a longitudinal alignment cylinder 20 corresponding to the position of the longitudinal notch 19 is arranged on the front side of the large tray base 9; a transverse notch 21 is arranged on one of the left and right side walls of the large tray 12, and a transverse alignment cylinder 22 corresponding to the position of the transverse notch 21 is arranged on one of the left and right sides of the transverse notch 21; a transverse alignment plate 23 is arranged at the end of the piston rod of the transverse alignment cylinder 22; a longitudinal alignment plate 24 is arranged at the end of the piston rod of the longitudinal alignment cylinder 20.

[0040] The small pallet transfer device 3 includes a gear-rack slide 25 provided on the small pallet loading and unloading frame 2; the gear-rack slide 25 includes a slide base 26, and a servo motor 27 matching the slide base 26 is provided on the slide base 26; a transverse module 28 is provided on the right side wall of the slide base 26; a moving body of the transverse module 28 is connected with a longitudinal module 29, and the longitudinal module 29 and the transverse module 28 are perpendicular to each other; both the transverse module 28 and the longitudinal module 29 are ball screw slides; a lifting support plate 30 is connected to the moving body of the longitudinal module 29; a clamping double-acting cylinder 31 is provided on the lower surface of the right end of the lifting support plate 30; positioning blocks 32 are provided on the piston rods on both sides of the clamping double-acting cylinder 31; a limiting flanging 33 extends inwards from the lower edge of the positioning block 32; a camera frame 34 is provided on the upper surface of the right end of the lifting support plate 30; a vision camera 35 is provided on the upper left side of the upper end of the camera frame 34.

[0041] The small pallet conveying device 4 includes a small pallet conveying frame 36; symmetrical conveying lines 37 are provided on the front and rear sides of the small pallet conveying frame 36; a driving motor 38 matching the conveying line is provided at one end of the small pallet conveying frame 36; a barcode scanner support 39 is provided on one side of the small pallet conveying frame 36; a barcode scanner 40 is provided at the upper end of the barcode scanner support 39; a jacking cylinder 41 is provided on the lower surface of the other end of the small pallet conveying frame 36 where the driving motor 38 is not provided; the piston rod of the jacking cylinder 41 extends upwards through the upper part of the small pallet conveying frame 36 and is provided with a jacking plate 42, and the jacking plate 42 is located between the two conveying lines 37; a jacking detection sensor 43 and a barcode scanning detection sensor 44 are provided on the upper surface of the small pallet conveying frame 36; a jacking stop cylinder 45 corresponding to the position of the jacking detection sensor 43 and a barcode scanning stop cylinder 46 corresponding to the position of the barcode scanning detection sensor 44 are provided on the upper surface of the small pallet conveying frame 36.

[0042] The large pallet conveying device includes a large pallet conveying frame 47; on the front and rear sides of the upper surface of the large pallet conveying frame 47, symmetrically arranged walking guide rails 48 are provided; a walking mechanism 49 matching the walking guide rails 48 is arranged on the walking guide rails 48; a rotary mechanism 50 is provided at the center of the upper surface of the walking mechanism 49; a lifting mechanism 51 is provided on the upper surface of the rotary mechanism 50; the lifting mechanism 51 includes a lifting guide rail 52 arranged on the left inner wall, and a lifting seat 53 matching the lifting guide rail 52 is arranged on the lifting guide rail 52; a first feeding module 54 is arranged on the lifting seat 53; a second feeding module 55 is arranged on the lifting seat 53; a moving plate 56 is arranged on the upper surface of the second feeding module 55; symmetrically arranged pressing cylinder plates 57 are arranged on the left and right sides of the upper surface of the moving plate 56; a pressing cylinder 58 is arranged on the pressing cylinder plate 57; a pressing block 59 is arranged at the lower end of the piston rod of the pressing cylinder 58; support bars 60 corresponding to the position of the pressing block 59 are arranged at the left and right ends of the moving plate 56, and the support bars 60 are located directly below the pressing block 59; a side detection sensor 61 is arranged on the front left side of the lifting mechanism 51; a front detection sensor 62 and a scanning sensor 63 are arranged on the upper surface of the moving plate 56.

[0043] The buffer device 7 includes a buffer box 64; a number of buffer areas 65 evenly distributed are provided on one side of the buffer box 64 opposite to the large pallet conveying device 5; a number of longitudinal evenly distributed crossbars 66 are arranged on the inner walls on both sides of the buffer area 65.

[0044] The baking device 6 includes an oven base 67; a number of longitudinally evenly distributed ovens 68 are arranged above the oven base 67; support feet 69 are provided on both sides between the oven 68 and the oven base 67 and between the ovens 68; an oven opening 70 communicating with the internal space of the oven 68 is provided on the front side of the oven 68; a number of longitudinally evenly distributed shelf blocks 71 are arranged on the left and right inner walls of the oven 68; an oven door 72 matching the oven opening 70 is hinged on the left side of the oven opening 70; a cylinder mounting seat 73 is provided at the front left end of the upper surface of the oven door 72; a driving cylinder 74 is fixed on the cylinder mounting seat 73; an elbow joint 75 is arranged at the end of the piston rod of the driving cylinder 74, and the elbow joint 75 is hinged on the upper surface of the left end of the oven door 72; two locking holes 76 are respectively arranged at the upper and lower ends of the right end face of the oven door 72; two sets of locking cylinders 77 corresponding to the positions of the locking holes 76 are arranged on the right side of the oven opening 70; a locking head 78 matching the locking hole 76 is arranged at the end of the piston rod of the locking cylinder 77, and the locking head 78 is narrow on the left and wide on the right.

[0045] It further includes a guardrail 79 which encloses the turntable device, the small tray loading and unloading rack 2, the small tray material transfer device 3, the large tray conveying device 5, the baking device 6, and the buffer device 7; a control panel 80 is provided on the guardrail 79; a number of uniformly distributed maintenance openings 81 are provided on the guardrail 79; and a maintenance door 82 matching the maintenance opening 81 is hinged to the maintenance opening 81.

[0046] The upper surface of the front part of the workbench 8 is connected to the lower surface of the small tray loading and unloading rack 2 through a number of uniformly distributed support columns 83; a support plate 84 is provided at the upper end of the piston rod of the electric cylinder 16; and the upper surface of the support plate 84 is connected to the lower surface of the small tray top plate 17 through a number of support rods 85.

[0047] The usage method of the present invention is as follows:

[0048] When the automatic curing equipment starts to run, at this time, the drive motor 38 of the small tray conveying device 4 on the left side is in the starting state, and the drive motor 38 will drive the conveyor line 37 to move. Just place the small tray 86 with the IGBT module products placed thereon onto the conveyor line 37 of the small tray conveying device on the left side, and the conveyor line 37 will drive the small tray 86 to move towards the small tray loading and unloading rack 2. When approaching the code scanning detection sensor 44, the code scanning detection sensor 44 will control the code scanning stop cylinder 46 to stop the small tray 86. The stop cylinder is a conventional cylinder mainly used for stopping trays on the production line. The stopped small tray 86 is located below the code scanner 40, and the code scanner 40 can read the two-dimensional code on the small tray 86, input the small tray 86 data into the system, and associate it with the product quality data on the subsequent small tray 86 one by one to achieve the traceability of the product quality data.

[0049] After importing the product data into the system, the code scanning stop cylinder 46 is reset and no longer stops the small tray 86. At this time, the small tray 86 continues to move towards the small tray loading and unloading rack 2 under the drive of the conveyor line 37. When the small tray 86 is conveyed to the position of the lifting detection sensor 43, the small tray 86 is located above the lifting plate 42, and at the same time, the lifting detection sensor 43 will immediately feedback the information to the lifting stop cylinder 45 and the lifting cylinder 41. When the lifting stop cylinder 45 receives the information, the lifting stop cylinder 45 will stop the small tray 86 again through its own piston rod, and then the piston rod of the lifting cylinder 41 will drive the lifting plate 42 to move upward to lift the small tray 86.

[0050] When the small tray 86 is lifted upwards, it will be detected by the small tray transfer device 3 on the left side immediately. Then the small tray transfer device 3 on the left side starts to operate. The gear-rack slide 25 of the small tray transfer device 3 is a conventional structure and can drive the slide seat 26 to move left and right along the track of the small tray loading and unloading rack 2. When the servo motor 27 operates, at this time the slide seat 26 will drive the positioning block to move towards the small tray 86. Since both the horizontal module 28 and the vertical module 29 are ball screw slides, and the ball screw slide is a conventional driving device, the positioning block 32 can move back and forth through the horizontal module 28, and the positioning block 32 can move up and down through the vertical module 29. Finally, the positioning blocks 32 on both sides are respectively located on both sides of the small tray 86 on the lifting plate 42. Immediately afterwards, the clamping double-acting cylinder 31 is activated, and the piston rods on both sides of the clamping double-acting cylinder 31 will drive the positioning blocks 32 on both sides to approach both sides of the small tray 86. Finally, the positioning blocks 32 on both sides clamp the small tray 86. During the process of the positioning blocks 32 clamping the small tray 86, the limiting flange 33 is located below the small tray 86 to play a supporting role, so as to ensure the stability after the positioning blocks 32 on both sides clamp the small tray 86. Finally, under the action of the horizontal module 28 and the vertical module 29, the small tray 86 is placed on the large tray 12. At this time, the small tray 86 is on the limiting step 15 of the large tray 12.

[0051] A camera frame 34 is provided on the upper surface of the right end of the lifting support plate 30, and a vision camera 35 is provided on the upper left side of the upper end of the camera frame 34. Therefore, the vision camera 35 will move together with the lifting support plate 30. When the small tray transfer device 3 on the left side grabs and places the small tray 86 with the product to be cured into the transfer table device 1, the vision camera 35 takes pictures of the product for detection and compares with the standard picture to check whether there is a product above the small tray 86.

[0052] At the same time, a number of small tray detection sensors 18 corresponding to the positions of the jacking holes 14 are provided on the upper surface of the workbench 8, which are used to detect the storage position and presence or absence of each small tray 86, to detect whether the small tray 86 is placed in place after being placed on the large tray 12, and can also be used to determine whether there is a small tray 86 at this position and to determine the presence or absence of the small tray 86.

[0053] One detection sensor 87 can be installed at each of the four corners of each small tray 86. After the small tray 86 is placed on the large tray 12, the detection sensor 87 will send information to the small tray transfer device 3 on the left side to prompt the large tray 12 that the small tray 86 and the product have been placed at this position, so as to avoid the situation of impact when placing the product.

[0054] A large pallet detection sensor 13 is provided on the inner wall of the front side of the large pallet base 9. After the large pallet 12 is placed on the transfer table device 1, the large pallet detection sensor 13 is used to detect whether the large pallet 12 is placed in place, and can be used to detect whether there is a large pallet 12 at the middle state station. If it is detected that the large pallet 12 is not placed in place, the longitudinal alignment cylinder 20 and the transverse alignment cylinder 22 will be started to adjust the position of the large pallet 12. When the longitudinal alignment cylinder 20 is started, the longitudinal alignment cylinder 20 can drive the longitudinal alignment plate 24 to move through its own piston rod, thereby pushing the large pallet 12 through the longitudinal alignment plate 24, so that the longitudinal position of the large pallet 12 can be adjusted. When the transverse alignment cylinder 22 is started, the transverse alignment cylinder 22 can drive the transverse alignment plate 23 to move through its own piston rod, thereby pushing the large pallet 12 through the transverse alignment plate 23, so that the transverse position of the large pallet 12 can be adjusted.

[0055] The transfer table device 1 mainly plays the role of transferring and storing the product during the conveying process between the assembly line and the oven 68. When the left small tray material transfer device 3 puts the product to be cured from the left small tray conveying device 4 to the transfer table device 1, it can be transferred to the oven 68 for baking. At this time, the large tray conveying device 5 starts to operate, and the walking mechanism 49 moves along the walking guide rail 48. The walking mechanism 49 can use a conventional screw drive mechanism to realize its own walking. When the walking mechanism 49 moves along the walking guide rail 48, the pressing block 59 and the support bar 60 are It will gradually approach the large pallet 12 that needs to be transported, and the first feeding module 54 and the second feeding module 55 are conventional modules like linear modules. The first feeding module 54 and the second feeding module 55 of the present invention both realize their own linear motion through the plastic track 88. The first feeding module 54 can drive the clamping block 59 and the support bar 60 to move up and down along the trajectory of the lifting guide rail 52 under the action of the plastic track 88. The second feeding module 55 can drive the clamping block 59 and the support bar 60 to move forward and backward under the action of the plastic track 88.

[0056] Meanwhile, vertically aligning the cylinder 20 will push the rear end of the large tray 12 out of the large tray clamping opening 10 through the vertical alignment plate 24. Finally, the pressing block 59 and the support bar 60 will move to the position of the large tray clamping opening 10 driven by the first feeding module 54 and the second feeding module 55. At this time, the support bar 60 is located below the rear end of the large tray 12, the upper surface of the support bar 60 fits with the lower surface of the large tray 12, and the pressing block 59 is located above the rear end of the upper large tray 12. Immediately afterwards, the pressing cylinder 58 is activated, and the piston rod of the pressing cylinder 58 drives the pressing block 59 to move down until the pressing block 59 presses the rear end of the large tray 12 against the support bar 60. At this time, the pressing block 59 and the support bar 60 cooperate to clamp the large tray 12. The rotating mechanism 50 is a conventional rotating mechanism that can realize the rotation of objects. After the large tray 12 is clamped, the rotating mechanism 50 will drive the lifting mechanism 51 to rotate. At this time, the large tray 12 will rotate from the front side of the large tray conveyor 47 to the rear side of the large tray conveyor 47 along with the lifting mechanism 51, and the large tray 12 faces the buffer area 65. Then, under the action of the traveling mechanism 49, the first feeding module 54 and the second feeding module 55, the large tray 12 is sent into the buffer area 65. When the large tray 12 is sent into the buffer area 65, the left and right ends of the large tray 12 are stuck above the left and right side bars 66, and the buffer area 65 plays the role of buffering and transfer.

[0057] The large tray conveying device 5 can realize actions such as the walking, lifting, rotation, horizontal feeding, clamping and loosening of the large tray 12, and can transfer and convey the large tray 12 among three areas including the turntable device 1, the oven 68, and the buffer area 65. The large tray conveying device 5 is also equipped with a front detection sensor 62 and a side detection sensor 61, which can be used to detect whether the large tray 12 is clamped in place and whether the large tray 12 has collided and caused a position shift during the conveying and clamping process. If so, an alarm will be given and the machine will stop. At the same time, a scanning sensor 63 is installed on the front of the large tray 12 for clamping, which is used to scan and detect whether there is a large tray 12 placed in the buffer area 65 and the oven 68 after the machine is started, so as to verify whether the storage state of the large tray 12 in the buffer area 65 and the oven 68 is consistent with the database.

[0058] Next, the large tray 12 in the buffer 65 is sent into the inner space of the oven 68 through the oven opening 70 under the action of the large tray conveying device 5. When the large tray 12 is in the inner space of the oven 68, the left and right ends of the large tray 12 are clamped above the supporting blocks 71. After the placement of the large tray 12 is completed, the piston rod of the pressing cylinder 58 drives the pressing block 59 to move upward. At this time, the pressing block 59 and the supporting strip 60 no longer clamp the large tray 12. The large tray conveying device 5 drives the pressing block 59 and the supporting strip 60 to move out of the oven 68. The oven door 72 of the oven 68 can be automatically opened and closed through the driving cylinder 74. When the piston rod of the driving cylinder 74 extends outward, the oven door 72 will rotate and open around its own hinge point under the action of the elbow joint 75. When the piston rod of the driving cylinder 74 contracts inward, the oven door 72 will rotate and close around its own hinge point under the action of the elbow joint 75. When the oven door 72 is closed, the oven opening 70 is sealed by the oven door 72. To ensure the sealing and heat preservation effect when the oven door 72 is closed, the locking cylinder 77 can be started. After the locking cylinder 77 is started, the piston rod of the locking cylinder 77 extends out. Under the action of the piston rod of the locking cylinder 77, the locking head 78 is inserted into the locking hole 76, thereby realizing the locking of the oven door 72 and ensuring the sealing and heat preservation effect. The locking head 78 is narrow on the left and wide on the right, effectively avoiding the situation of damage caused by collision during the insertion of the locking head 78 into the locking hole 76. After the oven door 72 is closed, the oven 68 starts to operate to bake and cure the IGBT module products.

[0059] After the curing of the IGBT module product is completed, the oven door 72 is opened under the action of the driving cylinder 74. At this time, the large pallet conveying device 5 uses the pressing block 59 and the support bar 60 to clamp the large pallet 12 out of the oven 68, so as to move the IGBT module product out of the oven 68, and then move it to the buffer area 65. Immediately afterwards, it is conveyed to the large pallet base 9 of the transfer table device 1 again. The electric cylinder 16 can push up the support plate 84 through its piston rod, so as to push up the small pallet top plate 17 upwards through the support rod 85. When the small pallet top plate 17 moves upwards, the small pallet top plate 17 will push up the small pallet 86 from the large pallet 12. The effective lifting stroke is 100 mm. After the small pallet 86 is pushed up by the small pallet top plate 17, the right small pallet transfer device 3 will clamp the small pallet 86 through the positioning block 32 and finally place it on the conveyor line 37 of the right small pallet conveying device 4. When the small pallet 86 is conveyed below the barcode scanner 40, the barcode detection sensor 44 detects the small pallet 86, and the conveyor line 37 stops conveying under the action of the barcode stopping cylinder 46. The barcode scanner 40 reads the two-dimensional code of the small pallet 86, enters the quantity and product data of the small pallet 86 into the system, associates with the subsequent product quality data of the small pallet 86 one by one, and realizes the traceability of the product quality data. After the barcode scanning is completed, the small pallet 86 continues to move under the drive of the conveyor line 37. When the lifting detection sensor 43 senses the small pallet 86, the lifting stopping cylinder 45 will stop the small pallet 86. At this time, the small pallet 86 is pushed upwards by the lifting plate 42 under the action of the lifting cylinder 41, and finally the collection of the cured IGBT module products on the small pallet 86 is completed.

[0060] As can be seen from the above, the present invention can realize full-automatic loading and unloading during the product curing process, effectively improve work efficiency, and the oven door 72 of the oven 68 can be automatically opened and closed, without manually putting the product into or taking it out of the oven 68, effectively avoiding the situation that personnel are easily scalded due to the high temperature of the cured product during misoperation. Moreover, with the automation of the curing work of the IGBT module, it can effectively save manpower and improve production capacity at the same time. In the case of mechanically transporting the IGBT module product, the sloshing amount of the module glue does not exceed 1 mm, and it can store the product curing data, and the curing curve and historical data of each module can be queried, solving the bottleneck problem in the power integrated circuit industry, and leading the quality improvement and efficiency increase of this industry with the landmark achievements of production equipment.

[0061] It also includes a guardrail 79 which encloses the turntable device 1, the small pallet loading and unloading rack 2, the small pallet material transfer device 3, the large pallet conveying device 5, the baking device 6, and the buffer device 7. A control panel 80 is provided on the guardrail 79. The guardrail 79 can provide a protective effect, and there are several evenly distributed maintenance openings 81 on the guardrail 79. A maintenance door 82 matching the maintenance opening 81 is hinged to the maintenance opening 81. By simply opening the maintenance door 82, the automatic curing equipment can be accessed for maintenance through the guardrail 79.

[0062] The material transfer operation of the small pallet material transfer device 3 is equipped with a closed loop and abnormal feedback. Each process operation is equipped with an optoelectronic switch to detect whether the material transfer operation is in place and display the displacement distance of each component, forming a closed loop displacement feedback. At the same time, the small pallet material transfer device 3 is also equipped with a detection switch to detect whether the clamping and opening operations of the small pallet material transfer device 3 are in place, forming a closed loop feedback.

[0063] The small pallet material transfer device 3 can carry out the loading and unloading and turnover of IGBT module products by clamping the small pallet 86. The small pallet 86 can be compatible with multiple modules. When the product is changed, there is no need to manually replace the small pallet material transfer device 3 and the small pallet 86. Multiple products can be seamlessly switched for production conveniently. Different modules can be mixed and produced together, and the conversion of modules does not require the conversion of tooling fixtures.

Claims

1. An IGBT module automatic curing device, characterized in that: It includes a transfer table device, and there is a small tray loading and unloading rack above the front part of the transfer table device; on the left and right parts of the small tray loading and unloading rack, there are small tray transfer devices matching it; on the left and right sides of the small tray loading and unloading rack, there are small tray conveying devices matching the small tray transfer devices; behind the transfer table device, there is a large tray conveying device matching it; on the left and right sides behind the large tray conveying device, there are a baking device and a buffer device matching it respectively; the transfer table device includes a workbench; on the workbench, there are several uniformly distributed large tray bases, and the large tray bases are in a "U" shape; behind the large tray base, there is a large tray clamping port opposite to the large tray conveying device; on the inner walls of the upper ends of the left and right sides of the large tray base, there are symmetrically arranged clamping steps; on the large tray base, there is a large tray matching it, and the left and right ends of the large tray are respectively clamped on the clamping steps; on the inner wall of the front side of the large tray base, there is a large tray detection sensor; on the large tray, there are several uniformly distributed jacking holes; at the edge of the upper end hole of the jacking hole, there is a limiting step in a "square" shape; inside the workbench, there are several electric cylinders corresponding to the positions of the jacking holes; the upper end of the piston rod of the electric cylinder penetrates upward through the upper surface of the workbench and is provided with a small tray top plate, and the small tray top plate can move up and down through the jacking hole; on the upper surface of the workbench, there are several small tray detection sensors corresponding to the positions of the jacking holes; in the middle of the side wall of the front side of the large tray base, there is a longitudinal notch, and on the front side of the large tray base, there is a longitudinal alignment cylinder corresponding to the position of the longitudinal notch; on one side wall of the left and right sides of the large tray, there is a transverse notch, and on one side of the left and right sides of the transverse notch, there is a transverse alignment cylinder corresponding to the position of the transverse notch; at the end of the piston rod of the transverse alignment cylinder, there is a transverse alignment plate; at the end of the piston rod of the longitudinal alignment cylinder, there is a longitudinal alignment plate.

2. The automatic curing device for IGBT modules according to claim 1, characterized in that: The small tray transfer device includes a gear rack slide on the small tray loading and unloading rack; the gear rack slide includes a slide base, and on the slide base, there is a servo motor matching it; on the right side wall of the slide base, there is a transverse module; the moving body of the transverse module is connected with a longitudinal module, and the longitudinal module and the transverse module are perpendicular to each other; both the transverse module and the longitudinal module are ball screw slides; the moving body of the longitudinal module is connected with a lifting support plate; on the lower surface of the right end of the lifting support plate, there is a clamping double-acting cylinder; on both sides of the piston rod of the clamping double-acting cylinder, there are positioning blocks; at the edge of the lower end of the positioning block, there is a limiting flange extending inward; on the upper surface of the right end of the lifting support plate, there is a camera rack; on the left side of the upper end of the camera rack, there is a vision camera.

3. An IGBT module automatic curing device according to claim 1, characterized in that: The small pallet conveying device includes a small pallet conveying rack; symmetric conveying lines are provided on the front and rear sides of the small pallet conveying rack; a driving motor matching the conveying line is provided at one end of the small pallet conveying rack; a barcode scanner bracket is provided on one side of the small pallet conveying rack; a barcode scanner is provided at the upper end of the barcode scanner bracket; a lifting cylinder is provided on the lower surface of the other end of the small pallet conveying rack without the driving motor; the upper end of the piston rod of the lifting cylinder penetrates upward above the small pallet conveying rack and is provided with a lifting plate, and the lifting plate is located between the two conveying lines; a lifting detection sensor and a barcode scanning detection sensor are provided on the upper surface of the small pallet conveying rack; a lifting stop cylinder corresponding to the position of the lifting detection sensor and a barcode scanning stop cylinder corresponding to the position of the barcode scanning detection sensor are provided on the upper surface of the small pallet conveying rack.

4. An IGBT module automatic curing device according to claim 1, characterized in that: The large pallet conveying device includes a large pallet conveying rack; symmetric traveling rails are provided on the front and rear sides of the upper surface of the large pallet conveying rack; a traveling mechanism matching the traveling rails is provided on the traveling rails; a rotary mechanism is provided at the center of the upper surface of the traveling mechanism; a lifting mechanism is provided on the upper surface of the rotary mechanism; the lifting mechanism includes a lifting rail provided on the left inner wall, and a lifting seat matching the lifting rail is provided on the lifting rail; a first feeding module is provided on the lifting seat; a second feeding module is provided on the lifting seat; a moving plate is provided on the upper surface of the second feeding module; symmetric pressing cylinder plates are provided on the left and right sides of the upper surface of the moving plate; a pressing cylinder is provided on the pressing cylinder plate; a pressing block is provided at the lower end of the piston rod of the pressing cylinder; support bars corresponding to the position of the pressing block are provided at the left and right ends of the moving plate, and the support bars are located directly below the pressing block; a side detection sensor is provided on the front left side of the lifting mechanism; a front detection sensor and a scanning sensor are provided on the upper surface of the moving plate.

5. An IGBT module automatic curing device according to claim 1, characterized in that: The buffer device includes a buffer box; a number of uniformly distributed buffer areas are provided on the side of the buffer box opposite to the large pallet conveying device; a number of longitudinally uniformly distributed crossbars are provided on the inner walls on both sides of the buffer area.

6. An IGBT module automatic curing device according to claim 1, characterized in that: The baking device includes an oven base; a number of longitudinally uniformly distributed ovens are provided above the oven base; support feet are provided on both sides between the oven and the oven base and between the ovens; an oven opening communicating with the inner space of the oven is provided on the front side of the oven; a number of longitudinally uniformly distributed shelf blocks are provided on the left and right inner walls of the oven; an oven door matching the oven is hinged on the left side of the oven opening; a cylinder mounting seat is provided at the front left end of the upper surface of the oven door; a driving cylinder is fixed on the cylinder mounting seat; an elbow joint is provided at the end of the piston rod of the driving cylinder, and the elbow joint is hinged on the upper surface of the left end of the oven door; two locking holes are provided at the upper and lower ends of the right end face of the oven door; two sets of locking cylinders corresponding to the positions of the locking holes are provided on the right side of the oven opening; a locking head matching the locking hole is provided at the end of the piston rod of the locking cylinder, and the locking head is narrow on the left and wide on the right.

7. An IGBT module automatic curing device according to claim 1, characterized in that: It further includes a guardrail which encloses the turntable device, the small pallet loading and unloading rack, the small pallet material transfer device, the large pallet conveying device, the baking device, and the buffer device; a control panel is provided on the guardrail; a number of uniformly distributed maintenance openings are provided on the guardrail; and a maintenance door matching the maintenance opening is hinged to the maintenance opening.

8. An IGBT module automatic curing device according to claim 1, characterized in that: The upper surface of the front part of the workbench is connected to the lower surface of the small pallet loading and unloading rack through a number of uniformly distributed support columns; a support plate is provided at the upper end of the piston rod of the electric cylinder; and the upper surface of the support plate is connected to the lower surface of the small pallet top plate through a number of support rods.

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