Pin furnace-passing welding tool

Abstract

The utility model relates to the technical field of power module production, in particular to a contact pin furnace-passing welding tool which comprises a tool fixing frame and a plurality of crown springs. The tool fixing frame is provided with an installation channel used for installing a crown spring, and the crown spring is detachably connected to the tool fixing frame and used for clamping a contact pin of the power module. Automatic clamping of the contact pin can be achieved, the welding precision and the production efficiency are improved, and meanwhile the later use and maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power module production, and in particular to a pin furnace welding tool. Background Art

[0002] Currently, pin welding is an important step in the production process of power modules. Traditional pin tooling is often one-time use or cannot automatically clamp the pins, which leads to low tooling efficiency and high subsequent maintenance costs. At the same time, these tools usually cannot guarantee the welding accuracy of the pins, affecting the production quality of the power module.

[0003] Therefore, based on the above problems, the prior art needs to be improved. Utility Model Content

[0004] The purpose of this application is to achieve automatic clamping of the pins, improve welding accuracy and production efficiency, and reduce subsequent use and maintenance costs.

[0005] The above technical purpose of the present application is achieved through the following technical solutions: a pin furnace welding tool, including a tool fixing frame and a plurality of crown springs, the tool fixing frame is hollow and has an installation channel for installing the crown springs, the crown springs are detachably connected to the tool fixing frame and are used to clamp the pins of the power module.

[0006] By adopting the above technical solutions, the crown spring can automatically and accurately clamp the pin, reducing manual operation time and energy, and improving welding accuracy and production efficiency. Accurate clamping ensures the accurate position of the pin during welding and avoids welding defects, while the detachable and replaceable crown spring can ensure that the crown spring is always in good working condition, which can improve the welding quality steadily. The detachable and replaceable crown spring avoids the high cost of replacing the entire tooling due to local damage. At the same time, automatic and accurate clamping reduces manpower input and waste generation, saving comprehensive costs.

[0007] Optionally, a cover plate is further included, which is arranged on the tooling fixing frame and is used to block a channel opening on one side of the installation channel away from the power module.

[0008] By adopting the above technical solution, the cover plate blocks the channel opening on one side of the installation channel away from the power module, limits the crown spring inside the fixture bracket, and limits the height of the inserted welding pins, reducing the looseness and uneven length of the pins. It effectively prevents foreign matter and dust from entering the channel, protects the internal crown spring and pins, and reduces the interference and influence of external factors on the welding process. Enhanced stability: Blocking the channel opening can prevent the crown spring from falling out from the other side of the channel due to uneven force during the welding process, ensuring the stability of the clamping effect.

[0009] Optionally, it also includes a fastening screw, the cover plate is provided with a first mounting through hole, the tooling fixing frame is provided with a second mounting through hole, and the fastening screw is fixed to the tooling fixing frame by passing through the first mounting opening and the second mounting hole.

[0010] By adopting the above technical solution, the fastening screws can pass through the first mounting through hole and the second mounting through hole to firmly fix the cover plate on the tooling fixing frame, ensuring that the cover plate will not loosen or shift during the welding process, thereby ensuring effective blocking of the installation channel. Stable cover plate fixation can better prevent external impurities from entering the installation channel and provide more reliable protection for the internal crown spring and pins. The tight connection method helps to maintain the position accuracy of the cover plate, thereby ensuring the limiting effect on the pins and improving the accuracy and consistency of welding. The connection method of the fastening screws makes the installation and removal of the cover plate relatively simple and quick, which facilitates the maintenance of the tooling and the replacement of components.

[0011] Optionally, a guide structure is provided on the cover plate.

[0012] By adopting the above technical solution, the guide structure can guide the fastening screws to align with the installation through holes quickly and accurately, reducing the alignment time during installation, thereby improving the installation efficiency of the cover. It makes it easier and more convenient for operators to install the cover, reducing the requirements for the operator's skill level. It effectively avoids problems such as loose fixation or improper installation of the cover due to deviation in the installation position of the screws, and improves the accuracy of installation. It ensures that the fastening screws can be fixed according to the predetermined path and position, thereby enhancing the stability of the cover after installation. When the cover needs to be removed and reinstalled, the guide structure can play a role again, making the operation smoother and facilitating the maintenance of the tooling.

[0013] Optionally, a tooling positioning pin is provided on the tooling fixing frame.

[0014] By adopting the above technical solution, the tooling positioning pin can ensure the accurate position of the tooling fixture during the welding operation, improving the precision and accuracy of welding. It ensures that the position of the tooling is the same every time welding, so that the welded product has a high degree of consistency and stability. Fast and accurate positioning reduces the time for adjusting the tooling position, speeds up the production process, and improves overall production efficiency. Accurate positioning can effectively avoid welding defects caused by tooling position deviation and reduce the generation of waste.

[0015] Optionally, there are a plurality of tooling locating pins.

[0016] By adopting the above technical solution, multiple tooling locating pins work together to more firmly fix the position of the tooling, prevent deviation or shaking during welding, and improve positioning stability. Multi-point positioning is more accurate than single-point positioning and can more accurately define the position of the tooling, thereby further improving welding accuracy. Multiple locating pins are evenly distributed to make the force on the tooling more balanced and reduce deformation or damage caused by excessive local force.

[0017] Optionally, a limiting piece is provided on the tooling positioning pin.

[0018] By adopting the above technical solution, the limiter can accurately control the distance between the tooling positioning pin and the power module, ensuring that the pin can be fully and accurately inserted into the installation channel, improving the accuracy of welding. Avoid inserting the pin too deep or too shallow, ensure the consistent insertion height of the pin, thereby improving the consistency of product quality. Effectively reduce the welding error caused by inaccurate insertion height, and improve welding accuracy and yield rate.

[0019] Optionally, the tooling fixing frame is made of hard aluminum alloy.

[0020] By adopting the above technical solution, the hard aluminum alloy has good high temperature resistance, can maintain structural stability in the high temperature environment of furnace welding, does not deform, and ensures the accuracy and reliability of the fixture. It provides sufficient strength and hardness to support and fix the crown spring, cover plate and other components, withstand various forces and pressures during welding, and ensure the normal operation of the fixture.

[0021] In summary, this application has at least the following beneficial effects:

[0022] 1. Since the present application adopts a crown spring to fix and clamp the welded pins, automatic clamping of the pins during welding assembly is achieved, preventing the pins from loosening and falling off during the assembly process, thereby greatly improving welding accuracy and production efficiency.

[0023] 2. In the present application, the tool fixing frame and the crown spring are detachably connected, so that the crown spring can be replaced independently when damaged, which reduces the subsequent use and maintenance costs and improves the reusability of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a pin-through furnace welding tool;

[0025] Figure 2 This is an exploded view of a pin-through furnace welding tool;

[0026] Figure 3 The present invention is a schematic diagram of the state of a pin-through-furnace welding tool.

[0027] Reference numerals

[0028] 1. Fixture fixing frame; 2. Crown spring; 3. Installation channel; 4. Power module; 5. Pin; 6. Cover plate; 7. Fastening screw; 8. First installation through hole; 9. Second installation through hole; 10. Guide structure; 11. Fixture positioning pin; 12. Limiting piece. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] In this embodiment, refer to Figure 1-3 A pin welding tool comprises a tool fixing frame 1 and a plurality of crown springs 2. The tool fixing frame 1 is hollow and has an installation channel 3 for installing the crown spring 2. The crown spring 2 is detachably connected to the tool fixing frame 1. The crown spring 2 is used to clamp the pin 5 of the power module 4.

[0031] Specifically, the fixture fixing frame 1 is made of hard aluminum alloy 6061-T6 material, and is provided with a plurality of mounting channels 3 matching the crown springs 2. These mounting channels 3 run through both sides of the fixture fixing frame 1, so that the crown springs 2 can be inserted from one side and fixed in the mounting channels 3. The crown springs 2 are elastic clamping elements that can freely expand and contract in the mounting channels 3 and clamp pins 5 of different diameters as required.

[0032] In practical applications, when the pin 5 of the power module 4 needs to be welded, the pin 5 only needs to be inserted into the corresponding installation channel 3 of the fixture fixing frame 1, and then the pin 5 is clamped by the elasticity of the crown spring 2. This can prevent the pin 5 from loosening or falling off during the welding process, thereby improving the welding accuracy and production efficiency.

[0033] In addition, since the crown spring 2 is detachably connected to the fixture fixing frame 1, when the crown spring 2 is damaged, it can be easily replaced without replacing the entire fixture fixing frame 1, thereby reducing the subsequent use and maintenance costs.

[0034] Example 2

[0035] Reference Figure 1-2 On the basis of Example 1, the furnace welding tool for the pin 5 provided in the embodiment of the present application further includes a cover plate 6 and a fastening screw 7. The cover plate 6 is arranged on the tool fixing frame 1, and is used to block the channel opening of the installation channel 3 away from the power module 4. The cover plate 6 is provided with a first installation through hole 8, and the tool fixing frame 1 is provided with a second installation through hole 9. The fastening screw 7 passes through the first installation opening and the second installation hole, and the cover plate 6 is fixed on the tool fixing frame 1.

[0036] Specifically, the cover plate 6 is made of hard aluminum alloy 6061-T6 material, and can cover the channel opening on one side of the installation channel 3 away from the power module 4. The cover plate 6 is provided with a first installation through hole 8 matching the fastening screw 7, and the tool fixing frame 1 is provided with a second installation through hole 9 corresponding to the first installation through hole 8, and the cover plate 6 is also provided with a guide structure 10. When the cover plate 6 is placed on the tool fixing frame 1, the first installation through hole 8 and the second installation through hole 9 will be aligned with each other, and at this time, the fastening screw 7 can be quickly and accurately guided to the first installation through hole 8 through the guide structure 10, and the fastening screw 7 is fixed to the cover plate 6 on the tool fixing frame 1 by passing through the first installation through hole 8 and the second installation through hole 9 in sequence.

[0037] By setting the cover plate 6 and the fastening screws 7, the crown spring 2 inside the fixture fixing frame 1 is limited, and the inserted welding pin 5 is height-limited, so as to reduce the phenomenon of looseness and the pin 5 being of different lengths. The position of the crown spring 2 and the pin 5 can be further fixed to prevent them from moving or falling off during the welding process. At the same time, the cover plate 6 can also protect the crown spring 2 and the pin 5, preventing external impurities or dust from entering the installation channel 3 and affecting the welding quality.

[0038] In general, the furnace welding tool for the pin 5 provided in the present application achieves fixed clamping of the welded pin 5 through the built-in crown spring 2, thereby improving welding accuracy and production efficiency; at the same time, the tool fixing frame 1 and the crown spring 2 are detachably connected, thereby reducing later use and maintenance costs; in addition, a cover plate 6 and a fastening screw 7 are provided to further fix the position of the crown spring 2 and the pin 5 and improve the welding quality.

[0039] Example 3

[0040] Reference Figure 1-2 A plurality of tooling locating pins 11 are provided on the tooling fixing frame 1. The tooling locating pins 11 are supported by hard aluminum alloy 6061-T6 material and can be integrally formed with the tooling fixing frame 1 or detachably connected. When the tooling locating pins 11 and the tooling fixing frame 1 are detachably connected, the tooling locating pins 11 can be assembled according to the corresponding positions of the locating holes on the power module 4 to fix and position the entire tooling on the connected machine. A limiting member 12 is provided on the tooling locating pin 11. The limiting member 12 is arranged around the tooling locating pin 11. The setting height of the tooling locating frame from the power module 4 is determined by the length of the limiting member 12, so that the pins 5 can be fully and accurately plugged into the installation channel 3, reducing the phenomenon of the pins 5 being plugged in at different lengths.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pin furnace welding tool, characterized in that: The utility model comprises a tool fixing frame (1) and a plurality of crown springs (2); the tool fixing frame (1) is hollow and provided with an installation channel (3) for installing the crown spring (2); the crown spring (2) is detachably connected to the tool fixing frame (1) and is used to clamp the pin (5) of the power module (4).

2. The pin furnace welding tool according to claim 1, characterized in that: It also comprises a cover plate (6), wherein the cover plate (6) is arranged on the tool fixing frame (1) and is used to block a channel opening on one side of the installation channel (3) away from the power module (4).

3. The pin furnace welding tool according to claim 2, characterized in that: It also includes a fastening screw (7), the cover plate (6) is provided with a first mounting through hole (8), the tool fixing frame (1) is provided with a second mounting through hole (9), and the fastening screw (7) is fixed to the cover plate (6) on the tool fixing frame (1) by penetrating the first mounting through hole (8) and the second mounting through hole (9).

4. The pin furnace welding tool according to claim 3, characterized in that: The cover plate (6) is provided with a guide structure (10).

5. The pin furnace welding tool according to claim 1, characterized in that: The tool fixing frame (1) is provided with a tool positioning pin (11).

6. The pin furnace welding tool according to claim 5, characterized in that: The tooling positioning pins (11) are provided in a plurality.

7. The pin furnace welding tool according to claim 6, characterized in that: The tooling positioning pin (11) is provided with a limiting piece (12).

8. The pin furnace welding tool according to claim 1, characterized in that: The tool fixing frame (1) is made of hard aluminum alloy.

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