Anti-cracking tooling for welding torsion spring metal terminal

Abstract

This utility model relates to the field of ultrasonic welding equipment and discloses a welding anti-cracking fixture for torsion spring metal terminals, comprising: a torsion spring metal terminal, a contour block mounting plate, and a cylinder ejection block. A contour positioning block is fixedly connected to the upper end of the torsion spring metal terminal. The contour block mounting plate is installed on the upper side of the contour positioning block, and a contour block mounting support is installed on the lower side of the contour block mounting plate. The cylinder ejection block is located on the right side of the contour block mounting plate, and an ejection cylinder is installed at the right end of the cylinder ejection block. A terminal plug is provided on the left side of the cylinder ejection block, and a terminal bushing is installed on the outer side of the terminal plug. A bushing mounting for assisting in the centering and placement of the terminal is provided on the upper side of the cylinder ejection block. This welding anti-cracking fixture for torsion spring metal terminals can form a permanent vibration buffer layer during ultrasonic welding, reducing vibration at the terminal tail during ultrasonic welding.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic welding equipment technology, specifically to a welding fixture for preventing cracking of torsion spring metal terminals. Background Technology

[0002] In existing technologies, metal terminals with torsion springs and press-fit structures are placed on welding fixtures during ultrasonic welding. The high-frequency vibrations (20-40kHz) of ultrasonic welding cause periodic stress concentration at the root of the torsion spring (the connection between the tail of the circular terminal and the torsion spring cap). Traditional fixtures use rigid clamping or inserting PEEK plugs into the terminal, which cannot buffer vibration energy and cannot prevent cracking of the torsion spring cap, resulting in a high cracking rate in the welded product. Traditional fixtures support weak points of the terminal through side clamping mechanisms, but they are not designed with specific protection for the dynamic stress characteristics of the torsion spring, and the cylinder mounting structure is prone to affecting clamping accuracy due to angular deviations. Furthermore, the materials of existing shock-absorbing components (such as ordinary rubber bushings) are prone to aging and failure under high temperature and high-frequency vibration. Therefore, anti-cracking fixtures for torsion spring metal terminal welding are needed, and various anti-cracking fixtures for torsion spring metal terminal welding are available on the market. However, conventional welding anti-cracking fixtures for torsion spring metal terminals are not convenient for centering and positioning the torsion spring metal terminals to be welded. As a result, when the pressure on both sides of the torsion spring metal terminal is different, one side of the torsion spring metal terminal is prone to damage. It is also not easy to reduce the vibration of the terminal tail during the welding process. Therefore, when the vibration force generated during welding is strong, the weld surface is prone to damage. Therefore, we propose a food delivery and preservation device to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of this utility model is to provide a welding anti-cracking fixture for torsion spring metal terminals, in order to solve the problems mentioned in the background art. The current general welding anti-cracking fixture for torsion spring metal terminals is not convenient for centering and positioning the torsion spring metal terminals to be welded. As a result, when the pressure on both sides of the torsion spring metal terminal is different, one side of the torsion spring metal terminal is easily damaged. It is also not convenient to reduce the vibration of the terminal tail of the torsion spring metal terminal during the welding process. As a result, when the vibration force generated during welding is strong, the weld surface is easily damaged.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a welding anti-cracking fixture for torsion spring metal terminals, comprising: A metal terminal with a torsion spring is fixedly connected to the upper end of the metal terminal with the torsion spring; Also includes: A contour block mounting plate is installed on the upper side of the contour positioning block, and a contour block mounting support is installed on the lower side of the contour block mounting plate. The contour block mounting plate is adjusted and centered on the upper side of the metal terminal with torsion spring. A cylinder ejection block is provided on the right side of the contour block mounting plate, and a crack-resistant damping structure for damping the terminals is provided on the right side of the cylinder ejection block. The crack-resistant damping structure includes an ejection cylinder, a terminal bushing, and a terminal plug. An ejection cylinder is installed at the right end of the cylinder ejection block, and a terminal plug is provided on the left side of the cylinder ejection block. A terminal bushing is installed on the outer side of the terminal plug. The upper side of the cylinder ejector block is provided with a bushing for assisting in the centering and placement of the terminals.

[0005] Preferably, the contour block mounting bracket is screwed onto the terminal welding fixture.

[0006] Preferably, the upper side of the metal terminal with torsion spring is provided with a contour block mounting plate that can be adjusted back and forth and centered, and the upper side of the metal terminal with torsion spring is provided with a contour positioning block that can be adjusted left and right.

[0007] Preferably, the back of the contour block mounting bracket is equipped with a mounting base plate, and the mounting base plate can be adjusted up and down.

[0008] Preferably, a bushing is installed on the upper side of the cylinder ejector block, and a mounting base plate is provided on the right side of the bushing. A cylinder mounting seat is installed on the upper side of the mounting base plate, and the cylinder mounting seat can be adjusted back and forth. A mounting seat body is installed on the outer side of the bushing.

[0009] Preferably, a cylinder fixing block is installed on the right side of the ejector cylinder, and the outer side of the ejector cylinder is rotatably connected to the cylinder mounting seat. A bushing is installed on the outer side of the terminal bushing and the terminal plug, and the front end of the terminal plug is tightly fitted to the terminal welding surface. A metal terminal with a torsion spring is tightly fitted inside the terminal bushing, and a floating joint is installed at the upper end of the ejector cylinder.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the anti-cracking tooling for welding torsion spring metal terminals can form a permanent vibration buffer layer during ultrasonic welding, reducing the vibration at the tail of the terminal caused by ultrasonic welding. 1. It is equipped with a contour positioning block, a contour block mounting plate, and a contour block mounting support. By installing the contour block mounting plate on the upper side of the contour block mounting support and the contour positioning block on the upper side of the contour block mounting plate, the contour block mounting plate can be adjusted back and forth, and the contour positioning block can be adjusted left and right, which can ensure the reliability of the terminal welding position. 2. It is equipped with a metal terminal with torsion spring, a contour block mounting bracket and a mounting base plate. By installing the mounting base plate on the back of the contour block mounting bracket, the mounting base plate can be adjusted up and down after installation, so that the positional error of the metal terminal with torsion spring can be adjusted, and deviation from the center can be avoided. 3. It is equipped with a cylinder mounting base, a cylinder fixing block and an ejector cylinder. By connecting the ejector cylinder to the cylinder fixing block and installing it on the upper side of the cylinder mounting base, the ejector cylinder can rotate freely after being ejected, which can prevent jamming caused by vertical position error when the cylinder is ejected. 4. It is equipped with a cylinder ejector block, a terminal bushing and a terminal plug. The cylinder ejector block drives the terminal bushing and the terminal plug to fit together, so that the front end face of the terminal plug fits the terminal welding surface. At the same time, the inside of the terminal bushing is wrapped around the outer periphery of the metal terminal with torsion spring, which can form a buffer structure. Attached Figure Description

[0011] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the isometric test structure of this utility model; Figure 4 This is a frontal cross-sectional view of the present invention. Figure 5 This is a schematic diagram of the anti-cracking fixture in this utility model being placed and installed on the welding fixture.

[0012] In the diagram: 1. Metal terminal with torsion spring; 2. Contour positioning block; 3. Contour block mounting plate; 4. Contour block mounting support; 5. Bushing mounting; 6. Mounting base body; 7. Mounting base plate; 8. Cylinder ejector block; 9. Floating joint; 10. Cylinder mounting base; 11. Cylinder fixing block; 12. Ejector cylinder; 13. Terminal bushing; 14. Terminal plug. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-5This utility model provides a technical solution: a welding anti-cracking fixture for torsion spring metal terminals, including a torsion spring metal terminal 1, a contour positioning block 2, a contour block mounting plate 3, a contour block mounting support 4, a bushing mounting 5, a mounting base body 6, a mounting base plate 7, a cylinder ejection block 8, a floating joint 9, a cylinder mounting base 10, a cylinder fixing block 11, an ejection cylinder 12, a terminal bushing 13, and a terminal plug 14; Existing anti-cracking fixtures for welding torsion spring metal terminals are not convenient for centering and positioning the torsion spring metal terminals to be welded. As a result, when the pressure on both sides of the torsion spring metal terminal is different, one side of the torsion spring metal terminal is prone to damage. It is also not convenient to reduce the vibration of the terminal tail during the welding process. Therefore, when the vibration force generated during welding is strong, the weld surface is prone to damage.

[0015] A contour positioning block 2 is fixedly connected to the upper end of the metal terminal 1 with a torsion spring. A contour block mounting plate 3 is installed on the upper side of the contour positioning block 2, and a contour block mounting support 4 is installed on the lower side of the contour block mounting plate 3. The contour block mounting plate 3 is symmetrically arranged on the upper side of the metal terminal 1 with a torsion spring, and the contour positioning blocks 2 are symmetrically arranged on the left and right sides of the upper side of the metal terminal 1 with a torsion spring. A mounting base plate 7 is installed on the back of the contour block mounting support 4, and the mounting base plate 7 is adjustable and can move up and down. A cylinder ejection block 8 is provided on the right side of the mounting base plate 7, and a cylinder ejection block 8 is mounted on the upper side of the cylinder ejection block 8. A bushing 5 is provided, and a mounting base 7 is provided on the right side of the bushing 5. A cylinder mounting seat 10 is installed on the upper side of the mounting base 7. The cylinder mounting seat 10 can be adjusted back and forth. An ejector cylinder 12 is rotatably connected inside the cylinder mounting seat 10. A cylinder fixing block 11 is installed on the right side of the ejector cylinder 12. A cylinder ejector block 8 is installed on the left side of the ejector block 8. A terminal bushing 13 is provided on the left side of the terminal bushing 13. The outer side of the terminal bushing 13 is tightly fitted with a terminal plug 14. A metal terminal 1 with a torsion spring is tightly fitted inside the terminal bushing 13.

[0016] When it is necessary to prevent vibration during the welding of torsion spring metal terminals, the contour block mounting bracket 4 is installed on the terminal welding fixture using screws. Then, the contour block mounting plate 3 is installed on the outside of the contour block mounting bracket 4, and the contour block mounting plate 3 is installed on the outside of the contour positioning block 2. The contour block mounting plate 3 can be adjusted forward and backward for centering, and the contour positioning block 2 can be adjusted left and right for centering, ensuring reliable terminal positioning during welding. The mounting base plate 7 is then installed on the back of the contour block mounting bracket 4. At this time, the mounting base plate 7 can be adjusted up and down to eliminate centering deviations caused by placement errors of the torsion spring metal terminal 1. After installing the mounting base plate 7, the cylinder mounting seat 10 is installed on the outside of the mounting base plate 7. The mounting base 10 can be adjusted back and forth on the outside of the mounting base plate 7, so that the cylinder ejection has stroke control and the ejection cylinder 12 is activated, pushing the cylinder fixing block 11 installed on the upper side of the cylinder mounting base 10. When the ejection cylinder 12 is running, it can rotate freely to prevent jamming caused by vertical position error when the cylinder is ejected. The mounting base body 6 is installed on the outside of the bushing mounting 5. After the floating joint 9 is installed on the outside of the cylinder ejection block 8, the ejection cylinder 12 is activated to push forward, which drives the cylinder ejection block 8 to push forward, so that the terminal bushing 13 and the terminal plug 14 hold the metal terminal 1 with torsion spring tightly, protecting the terminal. This can form a permanent vibration buffer layer during the ultrasonic welding process, reducing the vibration at the tail of the terminal caused by ultrasonic welding.

[0017] This is the entire working process of the anti-cracking tooling for welding metal terminals of torsion springs. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0018] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for preventing cracking of torsion spring metal terminals, comprising: A metal terminal with a torsion spring (1) is fixedly connected to the upper end of the metal terminal with the torsion spring (1) with a contour positioning block (2). Its characteristic is that it further includes: The contour block mounting plate (3) is installed on the upper side of the contour positioning block (2), and the contour block mounting plate (3) is installed on the lower side of the contour block mounting plate (3) with a contour block mounting support (4). The contour block mounting plate (3) is adjusted and centered on the upper side of the metal terminal (1) with torsion spring. A cylinder ejection block (8) is provided on the right side of the contour block mounting plate (3), and a crack-resistant damping structure for damping the terminals is provided on the right side of the cylinder ejection block (8). The crack-resistant damping structure includes an ejection cylinder (12), a terminal bushing (13), and a terminal plug (14). The ejection cylinder (12) is installed on the right end of the cylinder ejection block (8), and a terminal plug (14) is provided on the left side of the cylinder ejection block (8). A terminal bushing (13) is installed on the outside of the terminal plug (14). The upper side of the cylinder ejector block (8) is provided with a bushing mounting (5) for assisting in the centering and placement of the terminals.

2. The torsion spring metal terminal anti-cracking welding tooling according to claim 1, characterized in that: The contour block mounting bracket (4) is mounted on the terminal welding fixture by mounting bracket screws.

3. The torsion spring metal terminal anti-cracking welding tooling according to claim 1, characterized in that: The upper side of the metal terminal with torsion spring (1) is adjustable back and forth and is provided with a contour block mounting plate (3), and the upper side of the metal terminal with torsion spring (1) is adjustable left and right and is provided with a contour positioning block (2).

4. The torsion spring metal terminal anti-cracking welding tooling of claim 1, wherein: The back of the contour block mounting support (4) is fitted with a mounting base plate (7), and the mounting base plate (7) can be adjusted up and down.

5. The torsion spring metal terminal anti-cracking welding tooling of claim 1, wherein: A bushing mount (5) is installed on the upper side of the cylinder ejector block (8), and a mounting base plate (7) is provided on the right side of the bushing mount (5). A cylinder mounting seat (10) is installed on the upper side of the mounting base plate (7), and the cylinder mounting seat (10) can be adjusted back and forth. A mounting seat body (6) is installed on the outer side of the bushing mount (5).

6. The torsion spring metal terminal anti-cracking welding tooling of claim 1, wherein: A cylinder fixing block (11) is installed on the right side of the ejector cylinder (12), and the outer side of the ejector cylinder (12) is rotatably connected to the cylinder mounting seat (10). A bushing mounting (5) is installed on the outer side of the terminal bushing (13) and the terminal plug (14), and the front end of the terminal plug (14) is tightly attached to the terminal welding surface. A metal terminal (1) with a torsion spring is tightly attached inside the terminal bushing (13), and a floating joint (9) is installed on the upper end of the ejector cylinder (12).

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