Fuse welding equipment for fuse

Abstract

The utility model provides fuse melt welding equipment which comprises a height adjusting device, a lifting component and two movable rods, a lifting driving device is arranged on the height adjusting device and connected with the lifting component, a guide component is arranged on the lifting component, and the two movable rods are in sliding fit with the guide component respectively. A pressure sensor is arranged at the upper end of the movable rod, a pressure regulator is correspondingly arranged above the pressure sensor, and a spring is arranged between the pressure regulator and the pressure sensor; the lower ends of the two movable rods are connected with welding head connecting parts respectively, the welding head connecting part at the lower end of one movable rod is connected with a first welding head, and the welding head connecting part at the lower end of the other movable rod is connected with a second welding head. According to the utility model, the pre-pressure of the spring can be adjusted through the pressure regulator; by adjusting the pre-pressure of the spring, the contact pressure between the first welding head and the fuse and the contact pressure between the second welding head and the fuse during welding can be adjusted, and the final welding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a fuse melt welding device. Background Art

[0002] A fuse is an electrical device that generates heat to melt its fuse element, thus disconnecting the circuit when the current exceeds a specified value. Fuses are widely used in high and low voltage power distribution and control systems, as well as in electrical equipment. As a short-circuit and overcurrent protector, they are one of the most commonly used protective devices.

[0003] Figure 6 The structure diagram of an existing fuse is shown in FIG. 2 . During the production process of the fuse 20 , welding is required at the welding point 20 a on the fuse 20 to weld the melt and the shell together. The position of the welding point 20 a is shown in FIG. Figure 6 shown.

[0004] When welding a fuse, the existing welding equipment contacts the fuse 20 through two welding heads on the welding equipment, one of which contacts the metal shell of the fuse, and the other contacts the welding point 20a on the fuse. When the two welding heads are energized, a current loop is formed. When the current passes between one of the welding heads and the welding point 20a, a high temperature is generated, which melts the metal material at the welding point 20a and welds the melt to the shell.

[0005] The contact pressure between the two welding tips and the fuse directly affects the final weld quality. If the contact pressure is too low, it can easily lead to insufficient fusion at the weld, resulting in insufficient weld strength (i.e., a cold weld). If the contact pressure is too high, it can easily lead to excessive penetration of the welding tip (through the metal material at the weld), which can also affect the strength and durability of the welded structure.

[0006] However, existing welding equipment cannot flexibly adjust the contact pressure between the two welding heads and the fuse, which easily leads to problems such as cold welding or excessive penetration of the welding heads, thereby causing welding defects. Summary of the Invention

[0007] The purpose of the utility model is to solve the deficiencies in the prior art and provide a fuse melt welding device.

[0008] The purpose of the utility model is achieved through the following technical solutions: a fuse melt welding device, comprising a height adjustment device, a lifting component, and two movable rods, the height adjustment device is provided with a lifting drive device, the lifting drive device is connected to the lifting component, the lifting component is provided with a guide component, and the two movable rods are respectively slidably engaged with the guide components; a pressure sensor is provided at the upper end of the movable rod, a pressure regulator is provided above the pressure sensor, and a spring is provided between the pressure regulator and the pressure sensor; the preload of the spring is adjusted by the pressure regulator;

[0009] The lower ends of the two movable rods are respectively connected with welding head connecting parts, wherein the welding head connecting part at the lower end of one movable rod is connected with a first welding head, and the welding head connecting part at the lower end of the other movable rod is connected with a second welding head.

[0010] Preferably, the guide component includes a bearing fixedly connected to the lifting component, a sliding bearing is provided on the bearing seat, and the movable rod passes through the sliding bearing.

[0011] Preferably, the movable rod is connected to a limiting component, and the limiting component is located above the guide component.

[0012] Preferably, the lifting drive device is a pneumatic cylinder or an electric cylinder.

[0013] Preferably, a circulating water channel is provided in the welding head connecting component, and the two ends of the circulating water channel respectively pass through the outside of the welding head connecting component to form a circulating water channel inlet and a circulating water channel outlet; cooling water enters from the circulating water channel inlet and is discharged from the circulating water channel outlet.

[0014] Preferably, a connecting block is provided at the lower end of the movable rod, and the welding head connecting component is connected to the connecting block by a connecting screw; an adjustment hole is provided on the welding head connecting component, and a threaded hole corresponding to the adjustment hole is provided on the connecting block, and the connecting screw passes through the adjustment hole on the welding head connecting component and is connected to the threaded hole on the connecting block.

[0015] Preferably, the first welding head is made of tungsten alloy, and its lower end is sharp; the second welding head is made of copper, and its lower end is flat.

[0016] The beneficial effects of the present invention are as follows: in the present invention, the initial compression amount of the spring can be adjusted by the pressure regulator, thereby adjusting the preload (initial pressure) of the spring; by adjusting the preload of the spring, the contact pressure between the first welding head and the second welding head and the fuse during welding can be adjusted, so that the contact pressure between the welding head and the fuse is adjusted to a reasonable range, avoiding the problem of cold welding or excessive penetration of the welding head, thereby ensuring the final welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural diagram of the welding mechanism.

[0019] Figure 3 A top view of the welding mechanism.

[0020] Figure 4 for Figure 3 Cross-sectional view in the AA direction.

[0021] Figure 5 This is a schematic diagram showing the connection between the first welding head and the welding head connecting component.

[0022] Figure 6 The figure is a structural diagram of an existing fuse.

[0023] In the figure: 1. frame, 2. outer cover, 3. height adjustment device, 4. pressure display screen, 5. lifting component, 6. first welding head, 7. second welding head, 8. welding head connecting component, 8a. locking screw hole, 8b. adjustment hole, 8c. circulating water channel inlet, 8d. circulating water channel outlet, 9. lifting drive device, 10. pressure regulator, 11. movable rod, 12. connecting block, 13. bearing seat, 14. sliding bearing, 15. limit component, 16. pressure sensor, 18. spring, 20. fuse, 20a. welding point. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0025] like Figures 1 to 5 As shown, a fuse melt welding device includes a frame 1 and a welding mechanism, which is arranged on the frame 1. The welding mechanism includes a height adjustment device 3, a lifting component 5, and two movable rods 11. The height adjustment device 3 is provided with a lifting drive device 9, which is connected to the lifting component 5. The lifting component 5 is provided with a guide component, and the two movable rods 11 are respectively slidably engaged with the guide components; a pressure sensor 16 is provided at the upper end of the movable rod 11, and a pressure regulator 10 is correspondingly provided above the pressure sensor 16. A spring 18 is provided between the pressure regulator 10 and the pressure sensor 16; the preload of the spring 18 is adjusted by the pressure regulator 10;

[0026] The lower ends of the two movable rods 11 are respectively connected to welding head connecting parts 8, wherein the welding head connecting part 8 at the lower end of one movable rod 11 is connected to the first welding head 6, and the welding head connecting part 8 at the lower end of the other movable rod 11 is connected to the second welding head 7.

[0027] In the present invention, the height adjustment device 3 is used to adjust the height of the lifting drive device 9, and then adjust the initial height of the lifting component 5; during welding, the fuse 20 to be welded is placed below the first welding head 6 and the second welding head 7, wherein the first welding head 6 is aligned with the welding point 20a on the fuse 20, and then the lifting drive device 9 drives the lifting component 5 to move downward, so that the first welding head 6 and the second welding head 7 move downward at the same time, the first welding head 6 contacts the welding point 20a on the fuse 20, and the second welding head 7 contacts the outer shell of the fuse 20; after power is turned on, a high temperature is generated between the first welding head 6 and the welding point 20a, so that the metal material at the welding point 20a is melted; after welding is completed, the lifting drive device 9 drives the lifting component 5 to move upward and reset. After the first welding head 6 and the second welding head 7 reach the welding position, the springs 18 at the upper ends of the two movable rods 11 are compressed. The pressure exerted by the springs 18 on the movable rods 11 is the contact pressure between the welding heads and the fuse 20. The pressure sensor 16 can detect the pressure of the springs 18 in real time, thereby detecting the contact pressure. When the first welding head 6 and the second welding head 7 are welding the fuse 20, the springs 18 can maintain stable contact between the first welding head 6 and the second welding head 7 and the fuse 20. The pressure regulator 10 can adjust the initial compression of the springs 18, thereby adjusting the preload (initial pressure) of the springs 18. By adjusting the preload of the springs 18, the contact pressure between the first welding head 6 and the second welding head 7 and the fuse 20 during welding can be adjusted to a reasonable range, avoiding problems such as cold welds or excessive penetration of the welding heads, thereby ensuring the final welding quality. The guide component is used to guide the movement of the movable rod 11 to ensure the stability of the movement of the first welding head 6 and the second welding head 7.

[0028] Among them, the pressure regulator 10 adopts threaded transmission to realize compression adjustment of the spring 18; the pressure regulator 10 includes a fixed inner sleeve and a movable outer sleeve, the movable outer sleeve is arranged on the outside of the fixed inner sleeve, and the fixed inner sleeve is fixedly arranged on the lifting component 5; the movable outer sleeve and the fixed inner sleeve are threadedly matched; the movable outer sleeve is provided with a push rod, the lower end of the spring 18 contacts the pressure sensor 16, and the upper end of the spring 18 contacts the push rod; by rotating the movable outer sleeve to make one end of the push rod move, the initial compression amount of the spring 18 is changed by moving the push rod.

[0029] An outer cover 2 is provided on the outside of the height adjustment device 3, and a pressure display screen 4 is provided on the outer cover 2. The pressure value detected by the pressure sensor 16 can be displayed in real time through the pressure display screen 4, which is convenient for the operator to know the contact pressure of the welding head during each welding.

[0030] The guide component includes a bearing fixedly connected to the lifting component 5 . A sliding bearing 14 is provided on the bearing seat 13 , and the movable rod 11 passes through the sliding bearing 14 .

[0031] A limiting member 15 is connected to the movable rod 11 and is located above the guide member. When the first welding head 6 and the second welding head 7 are in an inoperative state (i.e., not in contact with the fuse 20), the limiting member 15 on the movable rod 11 contacts the upper end of the guide member, thereby limiting the position of the movable rod 11.

[0032] In this embodiment, the lifting drive device 9 is a pneumatic cylinder or an electric cylinder.

[0033] Furthermore, a circulating water channel is provided in the welding head connecting component 8, and the two ends of the circulating water channel respectively pass through the outer side of the welding head connecting component 8 and form a circulating water channel inlet 8c and a circulating water channel outlet; cooling water enters from the circulating water channel inlet 8c and is discharged from the circulating water channel outlet. When conventional welding equipment is performing continuous welding operations, the temperature of the first welding head 6 and the second welding head 7 will be very high, which will reduce the service life of the first welding head 6 and the second welding head 7, and thus require frequent replacement of the first welding head 6 and the second welding head 7; in the present invention, by providing a circulating water channel in the welding head connecting component 8, cooling water will enter from the circulating water channel inlet 8c and be discharged from the circulating water channel outlet 8d, and the welding head connecting component 8 will be cooled by the cooling water, thereby indirectly cooling the first welding head 6 and the second welding head 7, so as to avoid the first welding head 6 and the second welding head 7 from being too hot, thereby increasing the service life of the first welding head 6 and the second welding head 7, and reducing the replacement frequency of the first welding head 6 and the second welding head 7.

[0034] A connecting block 12 is provided at the lower end of the movable rod 11, and the welding head connecting component 8 is connected to the connecting block 12 by a connecting screw; an adjustment hole 8b is provided on the welding head connecting component 8, and a threaded hole corresponding to the adjustment hole 8b is provided on the connecting block 12. The connecting screw passes through the adjustment hole 8b on the welding head connecting component 8 and is connected to the threaded hole on the connecting block 12.

[0035] Among them, the adjustment hole 8b is a long hole, and the distance between the first welding head 6 and the second welding head 7 can be adjusted through the adjustment hole 8b. By adjusting the distance between the first welding head 6 and the second welding head 7, fuses 20 of different sizes can be matched to meet the welding requirements of fuses 20 of different sizes.

[0036] A welding head clamping groove is provided on the welding head connecting component 8, and the first welding head 6 or the second welding head 7 is connected to the welding head clamping groove. A locking screw hole 8a is also provided on the welding head connecting component 8, and the locking screw hole 8a is set at the welding head clamping groove. A locking screw is connected to the locking screw hole 8a, and the first welding head 6 or the second welding head 7 is clamped by tightening the locking screw.

[0037] In this embodiment, the first welding head 6 is made of tungsten alloy, and its lower end is sharp; the second welding head 7 is made of copper, and its lower end is flat.

[0038] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A fuse melt welding device, characterized in that: The device comprises a height adjustment device, a lifting component, and two movable rods. The height adjustment device is provided with a lifting drive device, which is connected to the lifting component. The lifting component is provided with a guide component, and the two movable rods are respectively slidably engaged with the guide components. A pressure sensor is provided at the upper end of the movable rod, and a pressure regulator is provided above the pressure sensor. A spring is provided between the pressure regulator and the pressure sensor. The preload of the spring is adjusted by the pressure regulator. The lower ends of the two movable rods are respectively connected with welding head connecting parts, wherein the welding head connecting part at the lower end of one movable rod is connected with a first welding head, and the welding head connecting part at the lower end of the other movable rod is connected with a second welding head.

2. A fuse melt welding device according to claim 1, characterized in that: The guide component includes a bearing fixedly connected to the lifting component, a sliding bearing is provided on the bearing seat, and the movable rod passes through the sliding bearing.

3. A fuse melt welding device according to claim 1, characterized in that: The movable rod is connected with a limiting component, and the limiting component is located above the guide component.

4. A fuse melt welding device according to claim 1, characterized in that: The lifting drive device is a pneumatic cylinder or an electric cylinder.

5. The fuse melt welding device according to claim 1, characterized in that: A circulating water channel is provided in the welding head connecting component, and both ends of the circulating water channel respectively pass through the outside of the welding head connecting component to form a circulating water channel inlet and a circulating water channel outlet; cooling water enters from the circulating water channel inlet and is discharged from the circulating water channel outlet.

6. The fuse melt welding device according to claim 1, characterized in that: A connecting block is provided at the lower end of the movable rod, and the welding head connecting component is connected to the connecting block through a connecting screw; an adjustment hole is provided on the welding head connecting component, and a threaded hole corresponding to the adjustment hole is provided on the connecting block. The connecting screw passes through the adjustment hole on the welding head connecting component and is connected to the threaded hole on the connecting block.

7. The fuse melt welding device according to claim 1, characterized in that: The first welding head is made of tungsten alloy, and its lower end is sharp; the second welding head is made of copper, and its lower end is flat.

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