Welding tool for IGBT (Insulated Gate Bipolar Translator) module

Abstract

The utility model discloses an IGBT module welding tool which comprises a shell, welding equipment is installed in the shell, movable openings are formed in the two sides of the shell, movable plates are connected in the movable openings in a sliding and clamping mode, and the two sides of the top of each movable plate are symmetrically provided with an installation groove respectively. According to the IGBT module welding tool, an adsorption type limiting and fixing mode is achieved, the damage risk of the module is reduced, and the stable limiting effect is ensured. The fixing mode does not need extra power energy and is achieved completely by means of a stable mechanical structure, meanwhile, the time for limiting and releasing limiting of the module before and after welding is saved, and the welding efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to IGBT module welding equipment technical field, concretely is a kind of IGBT module welding tooling. BACKGROUND

[0002] IGBT, namely insulated gate bipolar transistor, is a kind of power transistor that sets the advantages of MOSFET and bipolar transistor in one body.IGBT module is formed by the specific circuit bridging encapsulation of IGBT and FWD (free-wheeling diode chip), with the characteristics such as energy saving, installation and maintenance convenience, heat dissipation stability.IGBT module plays the role of "CPU" in power electronics device, is the core device of energy conversion and transmission, and is widely used in rail transit, smart grid, electric vehicle and new energy equipment and other fields.

[0003] In the production process of IGBT module, welding is a key process.IGBT module needs to be soldered by welding equipment, so welding tooling is used.The role of welding tooling is to fix IGBT module, to ensure stability and accuracy in welding process.However, the existing welding tooling has some problems when clamping and fixing module.

[0004] The existing welding tooling mostly adopts clamping fixed mode, but the clamping structure of module plate is often too rigid.If clamping force is too loose, effective limiting effect cannot be generated, and module displacement in welding process is likely to occur, affecting welding quality;If clamping force is too tight, IGBT module may be damaged, affecting its performance and service life.

[0005] In view of the above problems, it is urgent to make innovative design on the basis of original welding tooling. UTILITY MODEL CONTENT

[0006] The utility model technical scheme provides a kind of IGBT module welding tooling significantly different from the solution of prior art to solve the problems raised in the above background art, to solve the technical problem that prior art solution is too single.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of IGBT module welding tooling, including shell, welding equipment is installed in the shell, and movable mouth is opened in the both sides of shell, and movable plate is slidably clamped and connected in movable mouth, the top of movable plate two sides symmetry each is equipped with one installation slot, and each installation slot is equipped with a group of fixed structure for limiting module, and the side of each installation slot is equipped with the ejection structure for ejecting and facilitating module to be taken.

[0008] Preferably, the fixed structure comprises an air extraction part and a trigger part, the air extraction part comprises support cylinders, movable cylinders, piston blocks, limiting plates, limiting rods, a plurality of support cylinders are connected at equal intervals in each mounting groove, and the lower end of each support cylinder is communicated with a movable cylinder, and each movable cylinder is rotationally connected to the bottom of the movable plate, each movable cylinder is provided with a piston block, and the lower end of each piston block is connected with a limiting plate, each limiting plate is slidingly connected with a limiting rod, and each limiting rod is connected to the bottom of the movable plate.

[0009] Preferably, the upper end of the support cylinder in contact with the module is provided with a rubber layer for improving sealing and enhancing adhesion, the outer wall of the movable cylinder is provided with tooth blocks at equal angles, and the end of the movable cylinder and the piston block is screw connected.

[0010] Preferably, the trigger part comprises a sliding sleeve, a tooth rod, a return spring, a first full gear, a connecting shaft, a second full gear, and a trigger block, the end of the limiting rod on one side in each mounting groove is connected with a sliding sleeve, the sliding sleeve is slidingly connected with a tooth rod, and the tooth rod and each sliding sleeve are connected with a return spring, the tooth rod is engagedly connected with a first full gear, the first full gear is connected with a connecting shaft, the connecting shaft is rotationally connected to the bottom of the movable plate, the outer wall of the connecting shaft is connected with a second full gear, the side of the second full gear is engagedly connected with the tooth blocks on the movable cylinder, and the movable port is provided with a trigger block for extruding the tooth rod.

[0011] Preferably, the contact surface of the end of the tooth rod and the trigger block is arc-shaped, and the diameter of the first full gear is smaller than that of the second full gear.

[0012] Preferably, the ejection structure comprises an ejection groove, an ejection rod, a liquid channel, a groove, a pressing spring, and a piston pressing block, the ejection groove is formed in the side of each mounting groove, and the ejection rod is slidingly connected in each ejection groove, and the ejection groove is formed in the movable plate, each ejection groove is communicated with a liquid channel, and the liquid channel is communicated with the groove, and the groove is formed in the top of the movable plate, the pressing spring is connected in the movable plate, the end of the pressing spring is connected with the piston pressing block, and the groove is filled with hydraulic oil.

[0013] Compared with the prior art, the IGBT module welding tool has the advantages that: through the setting of the movable port, the movable plate and the mounting groove, when the module in the mounting groove on one side of the movable plate is being welded, the module to be welded can be pre-placed in the mounting groove on the other side. This design allows us to quickly push the movable plate after welding a module, so that the new module can quickly enter the shell, providing an instant welding object for the welding equipment. After welding is completed, we can easily take out the welded module and quickly place a new module to be welded, thereby significantly improving the welding efficiency.

[0014] By the setting of the fixed structure, an adsorbing type limiting and fixing mode is realized, which not only reduces the damage risk of the module, but also ensures stable limiting effect. This fixing mode does not require additional power energy, and completely relies on stable mechanical structure to realize, at the same time, saves the time for limiting and releasing the module before and after welding, further improves the welding efficiency.

[0015] By the setting of the ejection structure, convenience is provided for taking out the module after welding. When the module welded and cooled and solidified in the mounting groove at one end of the movable plate moving out of the shell is completed, the hydraulic pushing system will help to push the several side edges of the module by pressing the trigger ejection structure, so that the module in the mounting groove can be uniformly stressed and stably ejected. This way not only facilitates the taking of the module, but also avoids the damage of the module due to single-point stress, ensuring the integrity and welding quality of the module. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the sectional structure schematic diagram of the utility model;

[0017] Figure 2 It is a front view of the sectional structure schematic diagram of the utility model Figure 1 It is an enlarged structure schematic diagram of A in the utility model;

[0018] Figure 3 It is a front view of the structure schematic diagram of the utility model;

[0019] Figure 4 It is a left view of the structure schematic diagram of the utility model;

[0020] Figure 5 It is a right view of the structure schematic diagram of the utility model;

[0021] Figure 6 It is a top view of the mounting groove structure schematic diagram of the utility model;

[0022] Figure 7 It is a second full gear bottom view structure schematic diagram of the utility model.

[0023] In the figure: 1, shell; 2, welding equipment; 3, movable port; 4, movable plate; 5, mounting groove; 6, fixed structure; 601, support cylinder; 602, movable cylinder; 603, piston block; 604, limiting plate; 605, limiting rod; 606, sliding sleeve; 607, toothed rod; 608, return spring; 609, first full gear; 610, connecting shaft; 611, second full gear; 612, trigger block; 7, ejection structure; 701, ejection groove; 702, ejection rod; 703, liquid channel; 704, groove; 705, pressing spring; 706, piston pressing block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-7 The utility model provides a kind of technical solutions: a kind of IGBT module welding tool, including shell 1, welding equipment 2, movable mouth 3, movable plate 4, installation slot 5, fixed structure 6, support cylinder 601, movable cylinder 602, piston block 603, limit plate 604, limit rod 605, sliding sleeve 606, rack 607, reset spring 608, first full gear 609, connecting shaft 610, second full gear 611, trigger block 612, ejecting structure 7, ejecting slot 701, ejecting rod 702, liquid channel 703, recess 704, press spring 705, piston press block 706, welding equipment 2 is installed in shell 1, and shell 1 both sides are equipped with movable mouth 3, and movable mouth 3 is slidably clamped and connected with movable plate 4, and one installation slot 5 is symmetrically equipped in movable plate 4 top both sides, and a set of fixed structure 6 for limiting module is equipped in each installation slot 5, and each installation slot 5 side is equipped with ejecting structure 7 for ejecting and facilitating module to be taken.

[0026] Fixed structure 6 includes air extraction part and trigger part, air extraction part includes support cylinder 601, movable cylinder 602, piston block 603, limit plate 604, limit rod 605, a plurality of support cylinders 601 are connected with equal intervals in each installation slot 5, and one movable cylinder 602 is communicated with the lower end of each support cylinder 601, and each movable cylinder 602 is rotatably connected to the bottom of movable plate 4, one piston block 603 is arranged in each movable cylinder 602, and one limit plate 604 is connected to the lower end of each piston block 603, and one limit rod 605 is slidably connected to each limit plate 604, and each limit rod 605 is connected to the bottom of movable plate 4.

[0027] The upper end of support cylinder 601 in contact with module is provided with rubber layer for improving sealing property and enhancing adhesion, and the outer wall of movable cylinder 602 is provided with tooth block at equal angle, and the end of movable cylinder 602 and piston block 603 is screw connection.

[0028] The trigger part comprises a sliding sleeve 606, a rack 607, a reset spring 608, a first spur gear 609, a connecting shaft 610, a second spur gear 611, and a trigger block 612. The end of each limiting rod 605 on one side of each mounting groove 5 is connected with a sliding sleeve 606, the sliding sleeve 606 is connected with the rack 607 in a sliding mode, the rack 607 and each sliding sleeve 606 are connected with the reset spring 608, the rack 607 is connected with the first spur gear 609 in a meshing mode, the first spur gear 609 is connected with the connecting shaft 610, the connecting shaft 610 is rotatably connected to the bottom of the movable plate 4, the outer wall of the connecting shaft 610 is connected with the second spur gear 611, the side of the second spur gear 611 is connected with the tooth block on the movable cylinder 602 in a meshing mode, and the trigger block 612 for extruding the rack 607 is arranged in the movable port 3.

[0029] The contact surface of the end of the rack 607 and the trigger block 612 is in an arc structure, and the diameter of the first spur gear 609 is smaller than that of the second spur gear 611.

[0030] The ejection structure 7 comprises an ejection groove 701, an ejection rod 702, a liquid channel 703, a groove 704, a pressing spring 705, and a piston pressing block 706. The ejection groove 701 is arranged on the side of each mounting groove 5, the ejection groove 701 is connected with the ejection rod 702 in a sliding mode, the ejection groove 701 is arranged on the movable plate 4, each ejection groove 701 is connected with the liquid channel 703, the liquid channel 703 is connected with the groove 704, the groove 704 is arranged on the top of the movable plate 4, the pressing spring 705 is arranged in the movable plate 4, the end of the pressing spring 705 is connected with the piston pressing block 706, and the groove 704 is filled with hydraulic oil.

[0031] Working principle: according to Figure 1As shown, first, the module to be welded is placed into the mounting groove 5 on one side of the movable plate 4, the movable plate 4 is pushed to move into the shell 1 under the limiting assistance of the movable port 3, until the module in the mounting groove 5 is located below the welding equipment 2, during the process, when the tooth rod 607 arc end surface at the bottom of the movable plate 4 contacts the arc end surface of the trigger block 612, under the extrusion of the trigger block 612, the tooth rod 607 moves on the sliding sleeve 606, and the reset spring 608 is compressed under force, with the movement of the tooth rod 607, the first full gear 609 connected in mesh is driven, the first full gear 609 drives the second full gear 611 to rotate through the connecting shaft 610, and the second full gear 611 drives the movable cylinder 602 connected in mesh on the side to rotate, since the movable cylinder 602 and the threaded connection at the end of the piston block 603, and the limiting cooperation of the limiting plate 604, under the rotation of the movable cylinder 602, the piston block 603 moves downward under the assistance of the limiting rod 605 and the limiting plate 604, so that the air in the supporting cylinder 601 is sucked into the corresponding movable cylinder 602, negative pressure adsorption is generated between the supporting cylinder 601 and the module, the module is fixed and limited, and stability in the subsequent welding process is facilitated.

[0032] At this time, another module to be welded is placed into the mounting groove 5 on the other side of the movable plate 4, after welding, the welding equipment 2 is facilitated to quickly connect the next module for welding, and the welding efficiency is improved; meanwhile, when the movable plate 4 is pushed after welding, the tooth rod 607 is separated from the contact of the trigger block 612, the reset spring 608 drives the reset, the movable cylinder 602 pushes the sucked air back to the supporting cylinder 601, so that the module after welding is facilitated to be taken out.

[0033] After the module in the mounting groove 5 outside the shell 1 is removed, and it is determined that the welding leg is completely cooled and solidified, the piston pressing block 706 is pressed, the hydraulic oil in the groove 704 enters the ejection groove 701 through the liquid channel 703, the ejection rod 702 is pushed to move upward, the lower end of the ejection rod 702 pushes the module supported on the supporting cylinder 601 upward to move out of the mounting groove 5, and the module is facilitated to be taken out, which is the working principle of the IGBT module welding tool.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An IGBT module welding fixture comprising a housing (1), characterized in that: The welding equipment (2) is installed in the shell (1), and the movable openings (3) are formed on the two sides of the shell (1), and the movable plates (4) are slidably connected in the movable openings (3), the two sides of the top of each movable plate (4) is symmetrically provided with an installation slot (5), and a group of fixing structures (6) for limiting the module are arranged in each installation slot (5), and the ejection structure (7) for ejecting the module is arranged on the side of each installation slot (5).

2. The IGBT module welding fixture of claim 1, wherein: The fixing structure (6) comprises an air extraction part and a trigger part, the air extraction part comprises a supporting cylinder (601), a movable cylinder (602), a piston block (603), a limiting plate (604) and a limiting rod (605), a plurality of supporting cylinders (601) are connected in each installation slot (5) at equal intervals, a movable cylinder (602) is communicated with the lower end of each supporting cylinder (601), and each movable cylinder (602) is rotatably connected to the bottom of the movable plate (4), a piston block (603) is arranged in each movable cylinder (602), a limiting plate (604) is connected to the lower end of each piston block (603), and a limiting rod (605) is slidably connected to each limiting plate (604), and each limiting rod (605) is connected to the bottom of the movable plate (4).

3. The IGBT module welding fixture of claim 2, wherein: The upper end of the supporting cylinder (601) in contact with the module is provided with a rubber layer for improving the sealing performance and enhancing the adhesion, the outer wall of the movable cylinder (602) is provided with tooth blocks at equal angles, and the end of the movable cylinder (602) and the piston block (603) is threadedly connected.

4. The IGBT module welding fixture of claim 2, wherein: The trigger part comprises a sliding sleeve (606), a tooth rod (607), a return spring (608), a first full gear (609), a connecting shaft (610), a second full gear (611) and a trigger block (612), the end of the limiting rod (605) on one side in each installation slot (5) is connected with a sliding sleeve (606), the tooth rod (607) is slidably connected in the sliding sleeve (606), the return spring (608) is connected between the tooth rod (607) and each sliding sleeve (606), the tooth rod (607) is meshedly connected with the first full gear (609), the connecting shaft (610) is connected to the first full gear (609), and the connecting shaft (610) is rotatably connected to the bottom of the movable plate (4), the second full gear (611) is connected to the outer wall of the connecting shaft (610), the second full gear (611) is meshedly connected with the tooth blocks on the movable cylinder (602), and the trigger block (612) is arranged in the movable opening (3) and is used for extruding the tooth rod (607).

5. The IGBT module welding fixture of claim 4, wherein: The contact surfaces of the end of the tooth rod (607) and the trigger block (612) are provided in an arc-shaped structure, and the diameter of the first full gear (609) is smaller than that of the second full gear (611).

6. The IGBT module welding fixture of claim 1, wherein: The ejection structure (7) comprises ejection grooves (701), ejection rods (702), liquid channels (703), grooves (704), pressing springs (705), and piston pressing blocks (706), each of the ejection grooves (701) is arranged on the side of each of the mounting grooves (5), each of the ejection grooves (701) is slidably connected with an ejection rod (702), and the ejection grooves (701) are arranged on the movable plate (4), each of the ejection grooves (701) is communicated with a liquid channel (703), the liquid channels (703) are communicated with the grooves (704), the grooves (704) are arranged on the top of the movable plate (4), the pressing springs (705) are connected in the movable plate (4), the end of the pressing spring (705) is connected with the piston pressing block (706), and the grooves (704) are filled with hydraulic oil.

Images