CN216632940U

CN216632940U - PIN welding and clamping fixture for IGBT module

Info

Publication number: CN216632940U
Application number: CN202123213768.1U
Authority: CN
Inventors: 段忠福; 陈政伟; 陈来兴
Original assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Current assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-31
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a PIN welding and clamping fixture for an IGBT module, which comprises a substrate, wherein a lifting mechanism and a frame positioned on the outer side of the lifting mechanism are fixed on the substrate, the output end of the lifting mechanism is connected with an upper moving plate, an installation plate is fixed on the top of the frame, clamping jaws are arranged on two sides of the frame, guide grooves of the clamping jaws are connected with the outer side of the frame through rotating PINs, and the bottom ends of the clamping jaws are rotatably connected with the upper moving plate. According to the PIN welding clamping fixture for the IGBT module, the lifting mechanism drives the upper moving plate to lift, so that clamping or loosening of the clamping jaw can be realized, the IGBT module placed on the mounting plate can be clamped or loosened, the whole operation is simple and convenient, the positioning of the IGBT module is accurate through the arrangement of the positioning PIN and the positioning block, and the IGBT module is more convenient to place; the guide rod and the linear bearing are matched, so that the running precision and the straightness in the lifting process of the upper moving plate are ensured, and the clamping or loosening process of the clamping jaw is more stable.

Description

PIN welding and clamping fixture for IGBT module

Technical Field

The utility model relates to the field of clamping devices, in particular to a PIN welding and clamping fixture for an IGBT module.

Background

In the production process of the IGBT module with relatively low power, the welding process is divided into bus bar terminal welding and PIN welding. The traditional production process for welding the PIN is to weld a PIN needle and a copper substrate together by using tin paste or a tin plug sheet; however, soldering brings many problems, and the most main problems are that soldering increases the resistance of current in the IGBT module, increases energy consumption, generates heat seriously in the using process and reduces the service life of the IGBT module; in addition, the PIN needles and the copper plate substrate are made of different materials in soldering, so that the bonding force between the PIN needles and the copper plate substrate is small after welding, the PIN needles and the copper plate substrate are easy to fall off, and the instability of the IGBT module is increased. Therefore, an ultrasonic welding device is introduced to weld the PIN needle and the copper substrate in the IGBT module, the PIN needle and the copper substrate after ultrasonic welding are mutually fused by copper molecules, no chemical change occurs, no extra resistance value is generated in the conductive process, and the conductive performance of the IGBT is improved. In addition, ultrasonic bonding has still increased the pulling force between PIN needle and the copper base plate, provides IGBT's mechanical stability.

However, because the IGBT modules are all single and discrete products, the IGBT modules need to be positioned and fixed in the process of welding the IGBT modules by using ultrasonic waves, and the positioning and fixing operations of the IGBT modules are inconvenient and have low stability at present.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a PIN welding and clamping fixture for an IGBT module, which solves the problems that the IGBT module is a single dispersed product, the IGBT module needs to be positioned and fixed in the welding process by using ultrasonic waves, and the positioning and fixing operation of the IGBT module is inconvenient and the stability is low at present.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a PIN needle welding centre gripping anchor clamps for IGBT module, includes the base plate, be fixed with elevating system on the base plate and be located the frame in the elevating system outside, elevating system's output is connected with the upper shift plate, the top of frame is fixed with the mounting panel, and the both sides of frame all are equipped with the clamping jaw, the guide way of clamping jaw is connected through the outside of rotatory round PIN with the frame, the bottom of clamping jaw with rotatable coupling between the upper shift plate.

Further, the PIN welding and clamping fixture for the IGBT module is limited, wherein mounting blocks are fixed to four corners of the outer side of the frame, and the rotating PINs are arranged on the mounting blocks.

Further inject, foretell a PIN needle welding centre gripping anchor clamps for IGBT module, wherein, the top equidistance of frame is equipped with the locating piece, and the top slant of locating piece is equipped with the guide surface.

Further, the PIN welding and clamping fixture for the IGBT module is limited, wherein a positioning PIN is arranged at the clamping end of the clamping jaw.

Further, the PIN welding and clamping fixture for the IGBT module is limited, wherein connecting plates are fixed to the bottoms of the two ends of the upper moving plate, and the two ends of each connecting plate are hinged to the bottom ends of the clamping jaws.

Further inject, foretell a PIN needle welding centre gripping anchor clamps for IGBT module, wherein, the through-hole has all vertically been seted up at the both ends of upper shift plate, and the bottom of through-hole is fixed with linear bearing, is equipped with the guide arm in the linear bearing, and the bottom mounting of guide arm is in on the base plate.

Further, the PIN welding and clamping fixture for the IGBT module is limited, wherein handles are welded at two ends of the upper surface of the substrate.

The utility model has the following beneficial effects: according to the PIN welding clamping fixture for the IGBT module, the lifting mechanism drives the upper moving plate to lift, so that clamping or loosening of the clamping jaw can be realized, the IGBT module placed on the mounting plate can be clamped or loosened, the whole operation is simple and convenient, the positioning of the IGBT module is accurate through the arrangement of the positioning PIN and the positioning block, and the IGBT module is more convenient to place; the guide rod and the linear bearing are matched, so that the running precision and the straightness in the lifting process of the upper moving plate are ensured, and the clamping or loosening process of the clamping jaw is more stable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the installation of the lifting mechanism of the present invention;

FIG. 3 is a schematic view of the relaxed state of the present invention;

figure 4 is a schematic view of the relaxed state of the jaws of the present invention.

In the figure: 1. a substrate; 2. a handle; 3. a frame; 4. mounting blocks; 5. a rotation pin; 6. a clamping jaw; 7. mounting a plate; 8. positioning blocks; 9. positioning pins; 10. a connecting plate; 11. moving the plate upwards; 12. a linear bearing; 13. a guide bar; 14. a lifting mechanism; 15. a guide groove; 16. an IGBT module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a PIN needle welding centre gripping anchor clamps for IGBT module, which comprises a substrate 1, be fixed with elevating system 14 on the base plate 1 and be located the frame 3 in the elevating system 14 outside, elevating system 14's output is connected with upper mounting plate 11, elevating system 14 adopts but not limited to the cylinder, also can adopt other mechanisms such as hydro-cylinders that can drive upper mounting plate 11 lift, the top of frame 3 is fixed with mounting panel 7, the four corners in the frame 3 outside all is fixed with installation piece 4, rotatory round PIN 5 sets up on installation piece 4, the guide way 15 of clamping jaw 6 is connected with installation piece 4 through rotatory round PIN 5, the bottom of clamping jaw 6 is articulated with the fixed connecting plate 10 in 11 both ends bottom of upper mounting plate.

Locating blocks 8 are arranged at the tops of the frames 3 at equal intervals, guide faces are obliquely arranged at the top ends of the locating blocks 8, when the IGBT modules 16 are placed on the mounting plate 7 by workers, the IGBT modules are placed conveniently under the action of the guide faces, and the locating is accurate.

The clamping end of clamping jaw 6 is equipped with locating pin 9, and when clamping IGBT module 16 at clamping jaw 6, locating pin 9 can insert the downthehole of IGBT module 16 for fixed IGBT module 16, fixed more firm, the location is more accurate.

Through holes are vertically formed in two ends of the upper moving plate 11, linear bearings 12 are fixed at the bottoms of the through holes, guide rods 13 are arranged in the linear bearings 12, the bottom ends of the guide rods 13 are fixed on the base plate 1, and in the lifting process of the upper moving plate 11, the guide rods 13 slide along the linear bearings 12 and the through holes, so that the running precision and the straightness of the upper moving plate 11 are guaranteed during lifting motion.

Handle 2 has all been welded at the both ends of base plate 1 upper surface for during the anchor clamps of installation and dismantlement this application, the transport is convenient, and base plate 1's surface is equipped with a plurality of mounting holes, can be fixed base plate 1 through bolt and mounting hole cooperation.

Referring to fig. 1 and 2, when the clamping jaw 6 clamps the IGBT module 16, the state is when the PIN and the IGBT module 16 are welded; after the welding is finished, when the IGBT module 16 needs to be replaced, referring to fig. 3 and 4, the lifting mechanism 14 drives the connecting plate 10 to rise, and further drives the guide groove 15 of the clamping jaw 6 to move along the rotating pin 5, so that the clamping jaw 6 is separated from the IGBT module 16, and at this time, the IGBT module 16 can be taken out, and the new IGBT module 16 is replaced for welding.

According to the PIN welding clamping fixture for the IGBT module, the lifting mechanism 14 drives the upper moving plate 11 to lift, so that the clamping jaw 6 can be clamped or loosened, the IGBT module 16 placed on the mounting plate 7 can be clamped or loosened, the whole operation is simple and convenient, the positioning of the IGBT module 16 is accurate through the positioning PIN 9 and the positioning block 8, and the placing is more convenient; the guide rod 13 and the linear bearing 12 are matched, so that the running precision and the straightness of the upper moving plate 11 in the lifting process are guaranteed, and the clamping or loosening process of the clamping jaw 6 is more stable.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a PIN needle welding centre gripping anchor clamps for IGBT module, includes the base plate, its characterized in that: the base plate is fixed with elevating system and is located the frame in the elevating system outside, and elevating system's output is connected with the upper shift plate, the top of frame is fixed with the mounting panel, and the both sides of frame all are equipped with the clamping jaw, the guide way of clamping jaw passes through rotatory round pin and is connected with the outside of frame, the bottom of clamping jaw with rotatable coupling between the upper shift plate.

2. The PIN welding clamping fixture for the IGBT module according to claim 1, characterized in that: and mounting blocks are fixed at four corners of the outer side of the frame, and the rotating pins are arranged on the mounting blocks.

3. The PIN welding clamping fixture for the IGBT module according to claim 2, characterized in that: locating blocks are arranged on the top of the frame at equal intervals, and guide surfaces are obliquely arranged at the top ends of the locating blocks.

4. The PIN welding clamping fixture for the IGBT module according to claim 3, characterized in that: and the clamping end of the clamping jaw is provided with a positioning pin.

5. The PIN welding clamping fixture for the IGBT module according to claim 4, characterized in that: and connecting plates are fixed at the bottoms of the two ends of the upper moving plate, and the two ends of each connecting plate are hinged with the bottom ends of the clamping jaws.

6. The PIN welding clamping fixture for the IGBT module according to claim 5, characterized in that: through holes are vertically formed in the two ends of the upper moving plate, linear bearings are fixed at the bottoms of the through holes, guide rods are arranged in the linear bearings, and the bottom ends of the guide rods are fixed on the base plate.

7. The PIN welding clamping fixture for the IGBT module according to any one of claims 1-6, characterized in that: handles are welded at two ends of the upper surface of the substrate.