Welding jig and welding method

Abstract

The invention relates to the technical field of welding, and provides a welding jig and a welding method. The pressing assembly is arranged on the base and is used for pressing the pins; the driving part is used for driving the pressing assembly to enable the pressing assembly to press the pins; and the plating layer is arranged on the surface of the pressing assembly and is used for being in contact with a pin. According to the invention, the pin is placed into the pressing assembly, the pressing assembly presses the pin under the starting of the driving part, the problem of explosion caused by gaps is prevented, the resistance value at a non-welding point is reduced under the action of the plating layer, explosion is further prevented, and the integrity of the pin is ensured.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and particularly relates to a welding jig and a welding method. Background Art

[0002] A power pin is a commonly used plug-in electrical component. To ensure the firmness and conductivity between the lead and the pin, welding is required between the lead and the pin. When welding the pin, the pin needs to be clamped. However, due to insufficient conductivity of the clamping in the prior art, there will be arcing, resulting in defects on the pin, and more seriously affecting the later use. Summary of the Invention

[0003] Aiming at the deficiency of arcing existing in the prior art, the purpose of the present invention is to provide a welding jig and a welding method for preventing arcing.

[0004] To solve the above problems, the present invention provides the following technical solutions: In a first aspect, an embodiment of the present application provides a welding jig, including: a base; a pressing assembly, arranged on the base, for pressing the pin; a driving part, for driving the pressing assembly to press the pin; a coating layer, arranged on the surface of the pressing assembly, and the coating layer is used to contact the pin.

[0005] In some embodiments, the pressing assembly includes a first pressing block and a second pressing block; The first pressing block is fixedly installed on the base; The second pressing block is slidably installed on the base; When it is necessary to press the pin, the second pressing block moves towards the first pressing block, and the second pressing block and the first pressing block press the pin; when it is necessary to loosen the pin, the second pressing block moves away from the first pressing block, and the second pressing block and the first pressing block separate to loosen the pin.

[0006] In some embodiments, a limiting groove is arranged on the first pressing block, and the limiting groove is used for placing the pin.

[0007] In some embodiments, the transverse depth of the limiting groove is between 1.35 - 1.4 mm.

[0008] In some embodiments, the thickness of the coating layer is between 3 - 8 microns, and the roughness of the coating layer is between 0.08 - 0.16 microns.

[0009] In some embodiments, the coating layer includes a silver plating layer.

[0010] In some embodiments, the driving portion includes a cylinder and a driving block; The cylinder is arranged on the base; The driving block is mounted on the piston rod of the cylinder, and the second pressing block is fixed to the driving block; The cylinder drives the driving block to move, and the driving block drives the second pressing block to move.

[0011] In some embodiments, the driving block and the base are made of insulating materials.

[0012] In some embodiments, the first pressing block and the second pressing block are provided with electrode plug holes, the electrode plug holes are coaxial and the axis points to the moving direction of the second pressing block.

[0013] In a second aspect, an embodiment of the present application provides a welding method, using a welding jig as described in any one of the first aspects, characterized in that it includes the following steps: S1: Insert the negative electrode pin of the electric welder into the electrode socket of the first pressing block, and put the pin to be welded into the limiting groove; S2: driving the cylinder, so that the cylinder drives the second pressing block through the driving block to press the pin into the limiting groove. At this time, the negative electrode of the electric welding machine contacts the second pressing block; S3: Move the positive electrode of the electric welder toward the part of the pin to be welded until it contacts and then stops welding; S4: After welding is completed, the positive electrode is removed, and the cylinder is driven to make the driving block drive the second pressing block to move away from the first pressing block; S5: Take out the soldered pins and insert the unsoldered pins into the limiting grooves, and then repeat the operations of S2-S4 until the soldering is completed.

[0014] The beneficial effect of the present invention is that the pins only need to be placed in the clamping assembly, and the pins will be pressed by the clamping assembly when the driving unit is started, so as to prevent the occurrence of gaps and the problem of fire explosion. Under the action of the coating, the resistance value at the non-soldering point is reduced, so as to further prevent the occurrence of fire explosion and ensure the integrity of the pins. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the present invention; Figure 2 A three-dimensional diagram of the clearance groove for easy observation of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 A three-dimensional schematic diagram of one of the pins of the present invention being placed in a limiting groove; Figure 5A three-dimensional schematic diagram of another pin of the present invention placed in the limiting groove; Figure 6 A three-dimensional schematic diagram of one of the pins of the present invention.

[0016] Reference numerals: 100, welding jig; 110, base; 120, pressing assembly; 130, driving part; 121, first pressing block; 121a, limiting groove; 122, second pressing block; 123, electrode jack; 131, cylinder; 132, driving block; 200, pin. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0018] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0019] For the convenience of describing the first direction, the second direction, and the third direction in the embodiments of the present application, the first direction is the left-right direction in the accompanying drawings, the second direction is the front-back direction in the accompanying drawings, and the third direction is the up-down direction in the accompanying drawings. Among them, the x-axis arrow direction is the "right" direction in the following text, the y-axis arrow direction is the "up" direction in the following text, and the z-axis arrow direction is the "back" direction in the following text. In the actual application of the present application, this is not limited thereto.

[0020] Such as Figures 1-2 And Figures 4-6As shown in the figure, this embodiment provides a welding jig 100, which includes a base 110, a pressing component 120, a driving part 130, and a plating layer. The pressing component 120 is arranged on the base 110 and is used to press the pin 200; the driving part 130 is used to drive the pressing component 120 to press the pin 200; the plating layer is arranged on the surface of the pressing component 120 and is used to contact the pin 200. That is to say, when welding the pins 200 of a two-pin plug or a three-pin plug, only by placing the pin 200 into the pressing component 120, the pin 200 will, under the activation of the driving part 130, cause the pressing component 120 to press the pin 200, preventing the occurrence of gaps and resulting in the problem of explosion and fire. And under the action of the plating layer, the resistance value at non-welding points is reduced, further preventing the generation of explosion and fire and ensuring the integrity of the pin 200.

[0021] As Figures 1-2 and Figure 6 shown in the figure, in this embodiment, the pressing component 120 includes a first pressing block 121 and a second pressing block 122; the first pressing block 121 is fixedly installed on the base 110; the second pressing block 122 is slidably installed on the base 110; when it is necessary to press the pin 200, the second pressing block 122 moves towards the first pressing block 121, and the second pressing block 122 and the first pressing block 121 press the pin 200; when it is necessary to loosen the pin 200, the second pressing block 122 moves in a direction away from the first pressing block 121, and the second pressing block 122 and the first pressing block 121 separate to loosen the pin 200. Using one fixed pressing block and one moving pressing block can not only perform positioning under the action of the fixed pressing block but also facilitate the taking and placing of the pin 200 under the action of the moving pressing block.

[0022] As Figures 1-2 shown in the figure, in this embodiment, the driving part 130 includes a cylinder 131 and a driving block 132; the cylinder 131 is arranged on the base 110; the driving block 132 is installed on the piston rod of the cylinder 131, and the second pressing block 122 is fixed to the driving block 132; the cylinder 131 drives the driving block 132 to move, and the driving block 132 drives the second pressing block 122 to move. Using the cylinder 131 to drive the second pressing block 122 is not only convenient but also can ensure the stability of pressing.

[0023] The driving block 132 and the base 110 are made of insulating materials. Using the driving block 132 and the base 110 made of insulating materials can prevent electricity from passing through the piston rod of the cylinder 131 to the cylinder 131 when the second pressing block 122 is electrified during welding, resulting in the connection between the circuit driving the cylinder 131 and the welding circuit and thus causing a short circuit.

[0024] As Figures 1-2As shown, in this embodiment, a limiting groove 121a is provided on the first pressing block 121, and the limiting groove 121a is used for placing the pin 200. The setting of the limiting groove 121a can prevent the pin 200 from being deflected when pressing the pin 200.

[0025] In some embodiments, the lateral depth of the limiting groove 121a is between 1.35 - 1.4 mm. As Figure 3 shown, that is, the lateral depth of the limiting groove is represented by H, and the depth of the limiting groove 121a is between 1.35 - 1.4 mm, so that the pin 200 can be pressed by the pressing block while being inserted into the limiting groove 121a, preventing the pin 200 from loosening and causing arcing.

[0026] As Figures 1-3 shown, in some embodiments, when the lateral depth of the limiting groove 121a is 1.38 mm, it is the optimal depth.

[0027] In another embodiment (not shown here), a movable plate is provided in the limiting groove 121a, and a spring is provided at one end of the movable plate away from the second pressing block 122, so that the movable plate can move towards the second pressing block 122; when the pin 200 is placed in the limiting groove 121a and is pressed by the second pressing block 122, the pin 200 makes the movable block move towards one side of the spring until the second pressing block 122 stops moving after contacting the first pressing block 121, and at this time, the pin 200 is clamped under the action of the spring, which can not only avoid arcing caused by intervals on the periphery, but also prevent the pin 200 from being damaged due to excessive pressure.

[0028] In another embodiment, the periphery of the movable plate has a coating, and the coating further ensures the conductivity between the pin 200 and the movable plate.

[0029] In some embodiments, movable blocks are provided on both sides of the limiting groove 121a. After the pin 200 is placed in the limiting groove 121a, the movable blocks can contact the side of the pin 200, further ensuring close contact between the pin 200 and the periphery and preventing arcing.

[0030] In some embodiments, the periphery of the movable block has a coating, and the coating further ensures the conductivity between the pin 200 and the movable block.

[0031] In the embodiment, the thickness of the coating is between 3 - 8 microns, and the surface roughness of the coating is between 0.08 - 0.16 microns. By requiring the thickness and surface roughness of the coating, the conductive stability of the non - welded positions during the electroplating process is ensured, that is, the resistance of the non - welded parts is reduced, the occurrence of arcing is reduced, and the qualification rate of welding is ensured.

[0032] In the embodiment, the coating includes a silver - plated layer and is not limited to the silver - plated layer.

[0033] In other embodiments, the coating may be a nickel-silver composite coating. The nickel-silver composite coating comprises a 5-μm silver plating layer and a 2-μm nickel transition layer.

[0034] As Figures 1-2 shown, in this embodiment, electrode jacks 123 are provided on the first pressing block 121 and the second pressing block 122. The electrode jacks 123 are coaxial and the axes point to the moving direction of the second pressing block 122. By providing jacks on both the first pressing block 121 and the second pressing block 122, that is, when welding, both the first pressing block 121 and the second pressing block 122 are directly energized, so that the circuit is quickly connected for welding.

[0035] In some embodiments, three relief grooves are provided on the first pressing block 121. The second pressing block 122 can simultaneously press three pins 200 placed in the relief grooves, thus accelerating the welding efficiency. The first pressing block 121 is composed of a first conductive block and a first isolating member. The outer edge of the first conductive block has a coating. The first isolating member makes the pins 200 placed in the three relief grooves non-conductive after being energized. The second fixing block is composed of a second conductive block and a second isolating member. The outer edge of the second conductive block has a coating. The second isolating member makes the three pins 200 non-conductive after being pressed and energized by the second conductive block.

[0036] In other embodiments, two relief grooves are provided on the first pressing block 121. The second pressing block 122 can simultaneously press two pins 200 placed in the relief grooves, thus accelerating the welding efficiency. The first pressing block 121 is composed of a third conductive block and a third isolating member. The outer edge of the third conductive block has a coating. The third isolating member makes the pins 200 placed in the two relief grooves non-conductive after being energized. The second fixing block is composed of a fourth conductive block and a fourth isolating member. The outer edge of the fourth conductive block has a coating. The fourth isolating member makes the two pins 200 non-conductive after being pressed and energized by the fourth conductive block.

[0037] When the welding jig is in use, the welding jig can be used alone or can be used in the field of automated continuous welding.

[0038] As Figures 1-6 shown, in the embodiment: This embodiment provides a welding method, which includes the following steps: S1: Insert the negative electrode pin 200 of the electric welding machine into the electrode jack 123 of the first pressing block 121, and place the pin 200 to be welded into the limiting groove 121a; S2: Drive the cylinder 131, so that the cylinder 131 drives the second pressing block 122 through the driving block 132 to press the pin 200 in the limiting groove 121a. At this time, the negative electrode of the electric welding machine contacts the second pressing block 122; S3: Move the positive electrode of the electric welding machine towards the part of the pin 200 to be welded until contact is made and stay for welding; S4: After welding is completed, remove the positive electrode, and drive the air cylinder 131 to make the driving block 132 drive the second pressing block 122 to move away from the first pressing block 121; S5: Take out the welded pin 200, insert the non-welded pin 200 into the limiting groove 121a, and then repeat the operations of S2 - S4 until welding is completed.

[0039] By moving the second pressing block 122 to press or release the pin 200, just repeat replacing the pin 200 or the plug and performing welding, which further improves the welding efficiency.

[0040] In summary, the present invention provides a welding jig and a welding method. Just by putting the pin into the pressing assembly 120, the pin will make the pressing assembly 120 press the pin under the activation of the driving part 130, preventing gaps and resulting in the problem of arc explosion. And under the action of the coating, the resistance value at non-welding points is reduced, further preventing the generation of arc explosion and ensuring the integrity of the pin.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A welding jig, characterized in that: include: Base; A pressing assembly, provided on the base, for pressing the pins; A driving unit, used for driving the pressing assembly to make the pressing assembly press the pins; A coating is provided on the surface of the pressing component, and the coating is used for contacting with the pins.

2. The welding jig according to claim 1, characterized in that: The clamping assembly comprises a first clamping block and a second clamping block; The first pressing block is fixedly mounted on the base; The second pressing block is slidably mounted on the base; When the pin needs to be tightened, the second pressing block moves toward the first pressing block, and the second pressing block and the first pressing block tighten the pin; when the pin needs to be loosened, the second pressing block moves away from the first pressing block, and the second pressing block and the first pressing block separate to loosen the pin.

3. The welding jig according to claim 2, characterized in that: The first pressing block is provided with a limiting groove, and the limiting groove is used for inserting the pin.

4. The welding jig according to claim 3, characterized in that: The lateral depth of the limiting groove is between 1.35-1.4 mm.

5. The welding jig according to claim 2, characterized in that: The thickness of the coating is between 3 and 8 micrometers, and the roughness of the coating is between 0.08 and 0.16 micrometers.

6. The welding jig according to claim 5, characterized in that: The plating layer includes a silver plating layer.

7. The welding jig according to claim 2, characterized in that: The driving part includes a cylinder and a driving block; The cylinder is arranged on the base; The driving block is mounted on the piston rod of the cylinder, and the second pressing block is fixed to the driving block; The cylinder drives the driving block to move, and the driving block drives the second pressing block to move.

8. The welding jig according to claim 7, characterized in that: The driving block and the base are made of insulating materials.

9. The welding jig according to claim 2, characterized in that: The first pressing block and the second pressing block are provided with electrode plug holes, the electrode plug holes are coaxial and the axis points to the moving direction of the second pressing block.

10. A welding method, using a welding jig according to any one of claims 1 to 9, characterized in that The steps include: S1: Insert the negative electrode pin of the electric welder into the electrode socket of the first pressing block, and put the pin to be welded into the limiting groove; S2: driving the cylinder, so that the cylinder drives the second pressing block through the driving block to press the pin into the limiting groove. At this time, the negative electrode of the electric welding machine contacts the second pressing block; S3: Move the positive electrode of the electric welder toward the part of the pin to be welded until it contacts and then stops welding; S4: After welding is completed, the positive electrode is removed, and the cylinder is driven to make the driving block drive the second pressing block to move away from the first pressing block; S5: Take out the soldered pins and insert the unsoldered pins into the limiting grooves, and then repeat the operations of S2-S4 until the soldering is completed.

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