Metal foil welding strength testing device

Abstract

The utility model discloses a metal foil welding strength testing device, which relates to the field of strength testing devices and comprises a base, a fixing frame is arranged on the base, a driving component is arranged between the base and the fixing frame, a first lifting component and a second lifting component are arranged on the fixing frame, and the first lifting component and the second lifting component are both connected with the driving component. The top of the first lifting assembly and the bottom of the second lifting assembly are each provided with a clamping assembly, and a metal welding foil is arranged between the two clamping assemblies. The fixing frame is further provided with a limiting assembly, the limiting assembly is arranged between the two clamping assemblies and connected with the metal welding foil, and a sensor is arranged at the top of the first lifting assembly and connected with the clamping assemblies. The device for testing the welding strength of the metal foil can test the welding strength between the metal foils so as to evaluate the reliability of welding between a circuit protection device and a circuit.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of strength testing device, concretely is a kind of metal foil welding strength testing device. BACKGROUND

[0002] Circuit protection device is usually made of two outer layers of metal foil and core composite material by high-temperature bonding, and is connected with the circuit by welding. In the use scenario with strong vibration, in order to ensure that the circuit protection device does not fall off from the circuit, it needs to have high welding strength between the circuit.

[0003] The welding connection between the circuit protection device and the circuit is mainly realized by tin soldering between the outer metal foil and the metal nickel sheet (or nickel-based metal sheet, nickel-plated metal sheet) on the surface of the circuit. This welding method requires that the outer metal foil of the circuit protection device and the metal sheet on the surface of the circuit have a tight welding joint to ensure the reliability of the welding. Only when the welding strength is high enough, the circuit protection device can maintain stable connection in the long-term vibration environment.

[0004] Therefore, in order to evaluate the reliability of the welding between the circuit protection device and the circuit, a metal foil welding strength testing device is needed to test the welding strength between the metal foil sheets. SUMMARY

[0005] The utility model aims at providing a kind of metal foil welding strength testing device, which can test the welding strength between metal foil sheets to evaluate the reliability of the welding between the circuit protection device and the circuit.

[0006] The above-mentioned optimization structure of the utility model is realized by the following technical solutions: a kind of metal foil welding strength testing device, including base, fixed frame is equipped on the base, drive assembly is equipped between the base and the fixed frame, first lifting assembly, second lifting assembly are equipped on the fixed frame, and the first lifting assembly, the second lifting assembly are all connected with the drive assembly;

[0007] The first lifting assembly top and the second lifting assembly bottom are equipped with clamping assembly, and metal welding foil is equipped between two clamping assemblies;Limiting assembly is further equipped on the fixed frame, the limiting assembly is between two clamping assemblies, and is connected with the metal welding foil, sensor is equipped on the first lifting assembly top, and the sensor is connected with the clamping assembly.

[0008] In some embodiments, the fixed frame is provided with a sliding groove on one side, a sliding rod is arranged in the sliding groove, the first lifting assembly and the second lifting assembly are arranged on the sliding rod, and the drive assembly is arranged in the sliding groove.

[0009] In some embodiments, the driving assembly comprises a driving motor arranged in the base, a double-end screw rod is arranged on an output shaft of the driving motor, and the double-end screw rod is rotationally connected to the fixed frame at the top.

[0010] In some embodiments, the first lifting assembly comprises a first sliding block, the first sliding block is sleeved on the sliding rod and is screwedly connected to the double-end screw rod, a first connecting block is arranged on a side of the first sliding block away from the fixed frame, and the sensor is arranged on the first connecting block.

[0011] In some embodiments, the second lifting assembly comprises a second sliding block, the second sliding block is sleeved on the sliding rod and is screwedly connected to the double-end screw rod, a second connecting block is arranged on a side of the second sliding block away from the fixed frame, and the clamping assembly is arranged at the bottom of the second connecting block.

[0012] In some embodiments, the metal welding foil comprises two free ends, the free ends are fixed by the clamping assembly respectively, and a welding end is connected between the two free ends, and the welding end is supported by the limiting assembly.

[0013] In some embodiments, the limiting assembly comprises a fixed block arranged in the middle of the fixed frame, upper limiting rods and lower limiting rods are symmetrically arranged on a side of the fixed block away from the fixed frame, and rotatable metal rollers are arranged on the upper limiting rods and the lower limiting rods, and the welding end is arranged between the two metal rollers.

[0014] In some embodiments, two limiting wheels are arranged on the upper limiting rods and the lower limiting rods respectively, the metal roller is arranged between the two limiting wheels, and the distance between the two limiting wheels is greater than the width of the metal welding foil.

[0015] In summary, the utility model has the following beneficial effects:

[0016] The metal foil welding strength testing device can realize the stretching of the two free ends of the metal welding foil through the cooperation of the driving assembly, the first lifting assembly, the second lifting assembly and the clamping assembly, the sensor arranged between the first lifting assembly and the clamping assembly can obtain the tension between the two clamping assemblies in real time, so that the welding strength can be accurately evaluated. Meanwhile, the welding end is arranged in the limiting assembly, the spacing between the upper limiting rod and the lower limiting rod is adjusted through the reading of the precise pressure sensor and the adjusting knob, so that the limiting and supporting effect of the limiting assembly on the welding end can be adjusted, and the metal roller can be used together to obviously reduce the shaking of the welding end in the testing process without obvious friction resistance of the welding end, and the accuracy of the test is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is the utility model Figure 1 It is an enlarged view of A in the utility model;

[0019] Figure 3 It is a structural schematic view of the utility model without the fixing frame;

[0020] Figure 4 It is a structural schematic view of the utility model without the base; Figure 3

[0021] Figure 5 It is a structural schematic view of the limiting assembly of the utility model.

[0022] In the drawing: 1, base; 2, fixing frame; 21, sliding groove; 22, sliding rod; 3, driving assembly; 31, driving motor; 32, double-head screw rod; 4, first lifting assembly; 41, first sliding block; 42, first connecting block; 5, second lifting assembly; 51, second sliding block; 52, second connecting block; 6, clamping assembly; 7, metal welding foil; 71, free end; 72, welding end; 8, limiting assembly; 81, fixed block; 82, upper limiting rod; 83, metal roller; 84, limiting wheel; 85, lower limiting rod; 86, adjusting knob. DETAILED DESCRIPTION

[0023] 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 protection scope of the utility model.

[0024] REFERENCE Figures 1-4 ​The utility model provides a kind of metal foil welding strength testing device, for the test of metal welding foil 7 welding strength, including base 1, fixed frame 2 is equipped on base 1, for installing and fixing other components, drive assembly 3 is equipped between base 1 and fixed frame 2, first lifting assembly 4, second lifting assembly 5 are equipped on fixed frame 2, and first lifting assembly 4, second lifting assembly 5 are connected with drive assembly 3;

[0025] First lifting assembly 4 top and second lifting assembly 5 bottom are equipped with clamping assembly 6, and metal welding foil 7 is equipped between two clamping assembly 6;Clamping assembly 6 can adopt pneumatic clamp, this is prior art, here no longer repeat;Metal welding foil 7 includes two free ends 71, free end 71 is single metal foil not welded, free end 71 is connected with clamping assembly 6, and welding end 72 is connected between two free ends 71, and welding end 72 is formed by welding two single metal foils;Welding end 72 is connected with limiting component 8, limiting component 8 is also equipped on fixed frame 2, and limiting component 8 is arranged between two clamping assembly 6, sensor is equipped on the top of first lifting assembly 4, and sensor is connected with clamping assembly 6, and sensor is tension sensor, can obtain the numerical value of tension in the process of stretching metal welding foil 7 in real time, and sensor can be connected with control system, to record the tension value detected by sensor in real time.

[0026] In some embodiments, one side of fixed frame 2 is provided with a sliding groove 21, a sliding rod 22 is arranged in the sliding groove 21, the first lifting assembly 4 and the second lifting assembly 5 are arranged on the sliding rod 22, and the drive assembly 3 is arranged in the sliding groove 21. Through the driving of the drive assembly 3, the first lifting assembly 4 and the second lifting assembly 5 can slide on the sliding rod 22.

[0027] In some embodiments, the drive assembly 3 includes a drive motor 31 and a double-headed screw 32. The drive motor 31 is arranged in the base 1, the double-headed screw 32 is arranged on the output shaft of the drive motor 31, and the top of the double-headed screw 32 is rotatably connected with the fixed frame 2. The double-headed screw 32 is screw-connected with the first lifting assembly 4 and the second lifting assembly 5. When the drive motor 31 is started, the double-headed screw 32 rotates, thereby driving the first lifting assembly 4 and the second lifting assembly 5 to move closer to or farther away from each other on the sliding rod 22.

[0028] In some embodiments, the first lifting assembly 4 includes a first sliding block 41 and a first connecting block 42. The first sliding block 41 is sleeved on the sliding rod 22 and screw-connected with the double-headed screw 32. The first connecting block 42 is arranged on the side of the first sliding block 41 away from the fixed frame 2, and the sensor is arranged on the first connecting block 42.

[0029] In some embodiments, the second lifting assembly 5 comprises a second sliding block 51 sleeved on the sliding rod 22 and in threaded connection with the double-headed screw rod 32. The second sliding block 51 is provided with a second connecting block 52 on the side away from the fixed frame 2. The second connecting block 52 is provided with the clamping assembly 6 at the bottom.

[0030] In some embodiments, the limiting assembly 8 comprises a fixed block 81, an upper limiting rod 82, a metal roller 83, a limiting wheel 84, and a lower limiting rod 85. The fixed block 81 is arranged at the middle of the fixed frame 2. The fixed block 81 is provided with the upper limiting rod 82 and the lower limiting rod 85 on the side away from the fixed frame 2. The upper limiting rod 82 and the lower limiting rod 85 are both provided with the rotatable metal roller 83. The two metal rollers 83 are provided with the welded end 72 therebetween. The metal roller 83 and the welded end 72 are as close as possible but not clamped to ensure that the two free ends 71 are vertically peeled off during the stretching process. The metal roller 83 can carry the welded end 72 here. On the one hand, the welded end 72 and the free end 71 form a relatively stable 90° angle, avoiding the shaking of the welded end 72 during the stretching and peeling process, which affects the stability of the tension test. On the other hand, the metal roller 83 can be a smooth and wear-resistant stainless steel structure, which can reduce the friction between the metal welded foil 7 and the metal roller 83 during the stretching process, thereby improving the accuracy of the test.

[0031] In some embodiments, referring to Figure 5 , the limiting assembly 8 further comprises an adjusting knob 86. The distance between the upper limiting rod 82 and the lower limiting rod 85 in the vertical direction can be freely adjusted through the adjusting knob 86, so as to adjust the limiting and supporting effect of the limiting assembly 8 on the welded end 72.

[0032] Specifically, the fixed block 81 is provided with an adjusting groove on the side away from the fixed frame 2. The fixed block 81 is provided with the adjusting knob 86 at the top. The adjusting knob 86 is provided with a double-headed screw rod at the bottom. The double-headed screw rod penetrates the adjusting groove and can rotate in the bottom wall of the adjusting groove. The double-headed screw rod penetrates the upper limiting rod 82 and the lower limiting rod 85 and is in threaded connection with the upper limiting rod 82 and the lower limiting rod 85. The shapes of the upper limiting rod 82 and the lower limiting rod 85 on the side of the adjusting groove are matched with the adjusting groove, so that the upper limiting rod 82 and the lower limiting rod 85 can smoothly slide in the adjusting groove. The threaded connection parts of the double-headed screw rod and the upper limiting rod 82 and the lower limiting rod 85 respectively have opposite threads. By rotating the adjusting knob 86, the double-headed screw rod is driven to rotate, so that the upper limiting rod 82 and the lower limiting rod 85 move closer to or away from each other, thereby adjusting the distance between the upper limiting rod 82 and the lower limiting rod 85 in the vertical direction, and adjusting the limiting and supporting effect of the limiting assembly 8 on the welded end 72.

[0033] In some embodiments, the upper limiting rod 82 and the lower limiting rod 85 can be respectively provided with a precision pressure sensor. The pressure value between the metal foil and the upper limiting rod 82 and the lower limiting rod 85 can be measured, so as to facilitate the adjustment of the distance between the upper limiting rod 82 and the lower limiting rod 85.

[0034] In some embodiments, two limiting wheels 84 are arranged on the upper limiting rod 82 and the lower limiting rod 85, and a metal roller 83 is coaxially arranged between the two limiting wheels 84, the diameter of the limiting wheel 84 is greater than that of the metal roller 83, and the distance between the two limiting wheels 84 is greater than the width of the metal welding foil 7, so as to ensure that the metal welding foil 7 does not deviate from the predetermined path during the stretching process, and further improves the accuracy of the test.

[0035] The specific working principle is as follows:

[0036] During the test, first, the welded metal foil is cut into a metal welding foil 7 with a width of w, the two free ends 71 of the metal welding foil 7 are clamped on the two clamping assemblies 6 respectively, and it is ensured that the welded end 72 of the metal welding foil 7 is located between the two metal rollers 83. Then, the driving motor 31 is started, the output shaft of the driving motor 31 drives the double-headed screw 32 to rotate, thereby driving the first lifting assembly 4 and the second lifting assembly 5 to move towards each other. During the movement, the clamping assembly 6 clamps the two free ends 71 of the metal welding foil 7 for stretching. The sensor monitors the tension between the clamping assemblies 6 in real time, as the distance between the two clamping assemblies 6 becomes larger and larger, the tension first increases and then tends to be stable, and the tensile strength I data is obtained by dividing the stable tension data F by the width w of the foil.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A metal foil welding strength testing device, comprising a base (1), wherein a fixing frame (2) is provided on the base (1), characterized in that: A drive assembly (3) is provided between the base (1) and the fixed frame (2). A first lifting assembly (4) and a second lifting assembly (5) are provided on the fixed frame (2), and the first lifting assembly (4) and the second lifting assembly (5) are both connected to the drive assembly (3). The first lifting component (4) is provided with clamping components (6) at the top and the second lifting component (5) at the bottom. A metal welding foil (7) is provided between the two clamping components (6). The fixing frame (2) is also provided with a limiting component (8). The limiting component (8) is located between the two clamping components (6) and is connected to the metal welding foil (7). The first lifting component (4) is provided with a sensor at the top. The sensor is connected to the clamping component (6).

2. The metal foil welding strength testing device according to claim 1, characterized in that: The fixed frame (2) has a sliding groove (21) on one side, a sliding rod (22) is provided in the sliding groove (21), the first lifting component (4) and the second lifting component (5) are provided on the sliding rod (22), and the drive component (3) is provided in the sliding groove (21).

3. The metal foil welding strength testing device according to claim 2, characterized in that: The drive assembly (3) includes a drive motor (31), which is located inside the base (1). The output shaft of the drive motor (31) is provided with a double-headed screw (32), the top of which is rotatably connected to the fixed frame (2). The double-headed screw (32) is screwed into the first lifting assembly (4) and the second lifting assembly (5).

4. The metal foil welding strength testing device according to claim 3, characterized in that: The first lifting assembly (4) includes a first sliding block (41), which is sleeved on the sliding rod (22) and screwed into the double-headed screw (32). The first sliding block (41) has a first connecting block (42) on the side away from the fixed frame (2), and the sensor is provided on the first connecting block (42).

5. The metal foil welding strength testing device according to claim 3, characterized in that: The second lifting assembly (5) includes a second sliding block (51), which is sleeved on the sliding rod (22) and screwed into the double-headed screw (32). The second sliding block (51) has a second connecting block (52) on the side away from the fixed frame (2), and the clamping assembly (6) is provided at the bottom of the second connecting block (52).

6. The metal foil welding strength testing device according to claim 1, characterized in that: The metal welding foil (7) includes two free ends (71), which are fixed by the clamping assembly (6) respectively. A welding end (72) is connected between the two free ends (71), and the welding end (72) is limited and supported by the limiting assembly (8).

7. The metal foil welding strength testing device according to claim 6, characterized in that: The limiting component (8) includes a fixing block (81), which is located in the middle of the fixing frame (2). The fixing block (81) is symmetrically provided with an upper limit rod (82) and a lower limit rod (85) on the side away from the fixing frame (2). The upper limit rod (82) and the lower limit rod (85) are each provided with a rotatable metal roller (83), and the welding end (72) is provided between the two metal rollers (83).

8. The metal foil welding strength testing device according to claim 7, characterized in that: The upper limit rod (82) and the lower limit rod (85) are each provided with two limit wheels (84), and the metal roller (83) is provided between the two limit wheels (84). The distance between the two limit wheels (84) is greater than the width of the metal welding foil (7).

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