Welding jig convenient to adjust

Abstract

The utility model discloses a welding jig convenient to adjust, and relates to the technical field of welding jigs, and the welding jig convenient to adjust comprises a jig box and a fixing mechanism installed on the jig box and used for fixing a circuit board. The fixing mechanism comprises a two-way screw rod rotationally arranged in the jig box, two groups of movable plates arranged on the outer walls of the two ends of the two-way screw rod in a threaded manner, and mounting columns arranged on one sides of the two groups of movable plates in a sliding manner and used for being inserted into mounting holes in the two ends of the circuit board respectively; according to the invention, the rocking handle is rocked to drive the bidirectional screw rod to rotate, so that the two groups of movable plates can move transversely in a manner of getting close to each other or getting away from each other, and the two groups of movable plates after moving can insert the mounting columns into the mounting holes of the circuit board through the elastic force of the first springs, so that the circuit boards with different sizes and specifications can be quickly mounted, and subsequent welding is facilitated; on the whole, circuit boards of different sizes and specifications can be disassembled and assembled only by shaking the rocking handle, hooking the hook or taking down the hook, adjustment is convenient, time is saved, convenience is achieved, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding jigs, in particular to a welding jig convenient to adjust. BACKGROUND

[0002] PCB, the Chinese name is printed circuit board, also known as printed wiring board, is an important electronic component, is the support of electronic components, is the carrier of electrical interconnection of electronic components. Circuit board is widely used in communication, computer and other electronic products, the circuit board is full of circuit layout, and is equipped with various electronic components, when welding electronic components on the circuit board, the jig is used to fix the circuit board to facilitate subsequent welding operation.

[0003] The patent with publication number CN206547218U discloses "a circuit board welding jig convenient to adjust, including connecting rod, one end of the connecting rod is fixedly connected with the support column, the inner cavity of the support column is fixedly installed with the sliding rod, the middle part of the sliding rod is movably installed with the adjusting device, the adjusting device includes the second sliding block, the middle part of the second sliding block is movably installed with the pull rod. The utility model discloses simple structure, easy and convenient operation, convenient to adjust, can be suitable for different models of circuit board, improves the practicality of the jig, and effectively guarantees the quality of welding".

[0004] For the related technology in the above, the inventor believes that when fixing circuit boards of different sizes, two third sliding blocks need to be moved first, then two second sliding blocks are moved, then two first sliding blocks are moved, and two pins are also used to fix the pull rod and the second sliding block, so that the installation and fixing process of circuit boards of different sizes is relatively cumbersome and inconvenient, and therefore needs to be improved. Utility model content

[0005] In order to solve the above problems, the present application provides a welding jig convenient to adjust.

[0006] The welding jig convenient to adjust provided by the present application adopts the following technical scheme:

[0007] A welding jig convenient to adjust, comprising a jig box, a fixing mechanism installed on the jig box and used for fixing a circuit board, the fixing mechanism comprising a bidirectional screw rod rotatingly arranged in the jig box, two groups of movable plates screwedly arranged on the outer walls of both ends of the bidirectional screw rod, and a mounting column slidingly arranged on one side of the two groups of movable plates and used for being inserted into mounting holes at both ends of the circuit board, the bottom end of the movable plate is slidingly arranged in the jig box, the top of the movable plate is fixedly provided with a first spring on one side and used for pressing the mounting column downward, a limiting rod is slidingly arranged on one side of the movable plate and used for limiting the mounting column, and the top of the limiting rod is provided with a hanging mechanism used for hanging and fixing the mounting column away from the circuit board after welding.

[0008] By adopting the technical scheme, the two-way screw rod is rotated by shaking the handle, the two groups of movable plates are moved horizontally by approaching or moving away from each other, the two groups of movable plates after moving can be inserted into the mounting holes of the circuit board by the elastic force of the first spring, and different sizes of circuit boards can be quickly installed, so as to facilitate subsequent welding.

[0009] Preferably, one end of the two-way screw rod is fixedly provided with a handle outside the jig box, the other end of the two-way screw rod is fixedly provided with a rotating block rotatably connected in the jig box, and the top of the jig box is provided with two groups of notches for the movable plates to pass through and limit the movable plates.

[0010] By adopting the technical scheme, the rotating block can connect the jig box and the two-way screw rod, the two-way screw rod can rotate in the jig box without being separated, the two-way screw rod can be rotated by shaking the handle, and the notches can further limit the movable plates, so that the movable plates can only move horizontally

[0011] Preferably, a fixed plate is fixedly arranged on one side of the top of the jig box, the first spring is fixedly connected to the bottom of the fixed plate, the mounting column is fixedly connected to the bottom end of the first spring, the limiting rod is fixedly connected to the top of the mounting column, the limiting rod extends to the outside of the fixed plate through the top end, and the hanging mechanism comprises a hanging ring fixedly arranged on one side of the top of the movable plate and a hook rotatably arranged on the top end of the limiting rod and used for hanging the hanging ring on the mounting column.

[0012] By adopting the technical scheme, the hook is hung on the hanging ring, the mounting column can be pulled up and fixed, and the welded circuit board can be quickly removed from the jig.

[0013] Preferably, suction cups are fixedly arranged on both sides of the bottom of the jig box, a gas guide pipe is fixedly arranged on the top of the suction cup and extends to the inside of the jig box, horizontal rods are rotatably arranged on both sides of the inside of the jig box, inclined rotating rods are fixedly arranged on the outer wall of the horizontal rods, rubber plugs are fixedly arranged at the bottom end of the rotating rods and are inserted into the gas guide holes in the outer wall of the gas guide pipe, and a second spring is fixedly arranged at the top end of the gas guide pipe and used for keeping the rubber plug in the gas guide hole by pushing the top end of the rotating rod.

[0014] By adopting the technical scheme, the jig can be adsorbed on the desktop by the suction cups, the jig is not easy to move on the desktop during welding of the circuit board, the quality of welding is ensured, and the two movable plates are moved away from each other to push the rotating rod to rotate, so that the rubber plug is pulled out of the gas guide pipe, external gas can enter the suction cup through the gas guide pipe to make the suction cup lose suction, and the jig can be easily taken off from the desktop by the staff.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] 1. By rotating the bidirectional screw rod with the handle, the two groups of movable plates can move closer or farther away from each other, and the two groups of movable plates after moving can be inserted into the mounting holes of the circuit board through the elastic force of the first spring, so that the circuit board of different sizes can be quickly installed for subsequent welding, and the hook is hung on the hanging ring to pull up and fix the mounting column, which facilitates the quick disassembly of the welded circuit board from the fixture, and the whole process of disassembly and assembly of the circuit board of different sizes can be completed by only rotating the handle, hanging the hook or removing the hook, which is convenient to adjust, saves time and improves work efficiency;

[0017] 2. The suction cup can adsorb the fixture on the desktop, so that the fixture is not easy to move on the desktop during welding, ensuring the quality of welding, and the two movable plates move away from each other and push the rotating rod to rotate, so that the rubber plug is pulled out of the air guide pipe, so that external gas can enter the suction cup through the air guide pipe to lose the suction force of the suction cup, which is convenient for the workers to take down the fixture from the desktop more easily and saves labor. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the welding fixture convenient to adjust according to the embodiment of the application;

[0019] Figure 2 It is a front view of the welding fixture convenient to adjust according to the embodiment of the application;

[0020] Figure 3 The embodiment of the application mainly embodies Figure 1 the enlarged view of structure A;

[0021] Figure 4 The embodiment of the application mainly embodies Figure 2 the enlarged view of structure B;

[0022] Reference signs: 1, fixture box; 11, notch; 2, bidirectional screw rod; 21, movable plate; 22, handle; 23, first spring; 24, mounting column; 25, fixed plate; 26, limiting rod; 27, hanging ring; 28, hook; 3, suction cup; 31, air guide pipe; 4, cross rod; 41, rotating rod; 42, rubber plug; 43, second spring. DETAILED DESCRIPTION

[0023] The following will be combined with the Figures 1-4 The application will be further described in detail.

[0024] The embodiment of the application discloses a welding fixture convenient to adjust.

[0025] The welding fixture convenient to adjust, referring to Figures 1-2, including a jig box 1 and a fixing mechanism, a circuit board (PCB board) can be placed in the middle of the top surface of the jig box 1.

[0026] Referring to Figures 1-3 , the fixing mechanism includes a bidirectional screw rod 2 rotatably arranged in the jig box 1, two groups of movable plates 21 threadedly arranged on the outer walls of both ends of the bidirectional screw rod 2, and mounting columns 24 slidably arranged on one side of the two groups of movable plates 21 for being respectively inserted into mounting holes at both ends of the circuit board. The bottom end of the movable plate 21 is slidably arranged in the jig box 1, and the jig box 1 can limit the two movable plates 21 that slide. After the bidirectional screw rod 2 is rotated and cooperates with the limiting of the jig box 1, the two movable plates 21 will move closer to or away from each other, and after the two movable plates 21 move closer to each other, the two mounting columns 24 in the middle can be inserted and fixed into the mounting holes at both ends of the circuit board.

[0027] Referring to Figures 1-2 , one end of the bidirectional screw rod 2 is fixedly provided with a crank 22 located outside the jig box 1, and the other end of the bidirectional screw rod 2 is fixedly provided with a rotating block rotatably connected in the jig box 1. The jig box 1 is provided with two groups of notches 11 on the top for the movable plates 21 to pass through and limit the movable plates 21. The rotating block can connect the jig box 1 and the bidirectional screw rod 2, so that the bidirectional screw rod 2 can rotate in the jig box 1 without being separated. After the crank 22 is shaken, the bidirectional screw rod 2 can be rotated. The notches 11 can further limit the movable plates 21, so that the movable plates 21 can only move horizontally.

[0028] Referring to Figures 1-3 , the top of the movable plate 21 is fixedly provided with a first spring 23 for pressing the mounting column 24, and the top of the jig box 1 is fixedly provided with a fixed plate 25. The first spring 23 is fixedly connected to the bottom of the fixed plate 25, and the mounting column 24 is fixedly connected to the bottom end of the first spring 23. The fixed plate 25 can support the first spring 23 and other components, the first spring 23 can connect the fixed plate 25 and the mounting column 24, and the mounting column 24 can be inserted into the mounting hole of the circuit board under the elastic force of the first spring 23, thereby improving the stability of the circuit board after installation.

[0029] Referring to Figures 1-3 , a limiting rod 26 for limiting the mounting column 24 is slidably arranged on one side of the movable plate 21. The limiting rod 26 is fixedly connected to the top of the mounting column 24, and the top end of the limiting rod 26 penetrates and extends to the outside of the fixed plate 25. The limiting rod 26 can connect the mounting column 24 and the fixed plate 25, and limit the mounting column 24, so that the mounting column 24 can only move up and down.

[0030] Referring to Figures 1-3The top of the limiting rod 26 is provided with a hooking mechanism for hooking and fixing the mounting column 24 after being pulled away from the circuit board after welding, the hooking mechanism comprises a hook ring 27 fixed on one side of the top of the movable plate 21 and a hook 28 rotatably arranged at the top end of the limiting rod 26 for hooking the hook ring 27 on the mounting column 24 after moving upwards, after welding, the staff can move the limiting rod 26 upwards to make the mounting column 24 separate from the circuit board, and the hook 28 at the top of the limiting rod 26 is hooked in the hook ring 27, at this time, the mounting column 24 after moving upwards can be fixed by the elastic force of the first spring 23.

[0031] With reference to Figure 1 , Figure 2 and Figure 4 , the bottom of the jig box 1 is fixedly provided with a suction cup 3, and the top of the suction cup 3 is fixedly provided with a gas guide pipe 31 in communication and extending to the inside of the jig box 1, the suction cup 3 can adsorb the jig on the desktop, so that the jig is not easy to move on the desktop during welding of the circuit board, and the welding quality is ensured, and the gas guide pipe 31 is in communication with the inside of the suction cup 3.

[0032] With reference to Figure 1 , Figure 2 and Figure 4 , the inside of the jig box 1 is rotatably provided with a cross rod 4 on both sides, the outer wall of the cross rod 4 is fixedly provided with an inclined rotating rod 41, the bottom end of the rotating rod 41 is fixedly provided with a rubber plug 42 inserted into a gas guide hole in the outer wall of the gas guide pipe 31, the top end of the gas guide pipe 31 is fixedly provided with a second spring 43 for keeping the rubber plug 42 in the gas guide hole by pushing the top end of the rotating rod 41, and the two movable plates 21 are located between the two rotating rods 41, the cross rod 4 can connect the jig box 1 and the rotating rod 41, so that the rotating rod 41 can rotate in the jig box 1, the rubber plug 42 can block the gas guide hole of the gas guide pipe 31, so that external gas cannot enter the gas guide pipe 31, and one end of the second spring 43 abuts against the outer wall of the top end of the rotating rod 41.

[0033] When the two movable plates 21 move away from each other, the rotating rod 41 is pushed to rotate, so that the rubber plug 42 is pulled out of the gas guide hole of the gas guide pipe 31, so that external gas can enter the suction cup 3 through the gas guide hole and the gas guide pipe 31 to make the suction cup 3 lose suction, so that the staff can easily take the jig off the desktop, when the movable plate 21 moves reversely to separate from the rotating rod 41, at this time, the rotating rod 41 reversely rotates under the elastic force of the second spring 43, so that the rubber plug 42 can block the gas guide hole again to seal the inside of the gas guide pipe 31, so that the suction cup 3 can be normally used.

[0034] The implementation principle of the welding jig convenient to adjust is as follows:

[0035] In use, the worker can place the circuit board in the middle of the top surface of the jig box 1, then the worker can shake the handle 22 to drive the bidirectional screw rod 2 to rotate, and the jig box 1 and the notch 11 limit the movement of the two movable plates 21 to move closer to or away from each other. After the two movable plates 21 move closer to each other, they will slowly move closer to the middle circuit board, and then the hook 28 is removed from the hanging ring 27. At this time, the two groups of mounting columns 24 can be inserted into the mounting holes at both ends of the circuit board under the elastic force of the first spring 23, so as to quickly install circuit boards of different sizes for subsequent welding.

[0036] After welding, the worker can move the limiting rod 26 upward to make the mounting column 24 disengage from the circuit board, and the hook 28 at the top of the limiting rod 26 is hung in the hanging ring 27. At this time, the elastic force of the first spring 23 can fix the mounting column 24 after moving upward, which is convenient for quickly disassembling the welded circuit board from the jig.

[0037] The suction cup 3 can adsorb the jig on the desktop, so that the jig is not easy to move on the desktop during circuit board welding, ensuring the welding quality. When the jig needs to be removed from the desktop, the handle 22 is shaken to move the two movable plates 21 away from each other. The movable plates 21 after moving will push the inclined rotating rod 41 to rotate, so as to pull out the rubber plug 42 from the air guide hole of the air guide pipe 31. External gas can enter the suction cup 3 through the air guide hole and the air guide pipe 31 to make the suction cup 3 lose suction, so that the worker can easily remove the jig from the desktop, which is labor-saving and convenient.

[0038] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A welding jig convenient to adjust, comprising a jig box (1) and a fixing mechanism mounted on the jig box (1) and used for fixing a circuit board, characterized in that: the fixing mechanism comprises a bidirectional screw rod (2) rotatably arranged in the jig box (1), two groups of movable plates (21) threadedly arranged on the outer walls of the two ends of the bidirectional screw rod (2), and mounting columns (24) slidably arranged on one side of the two groups of movable plates (21) and used for being respectively inserted into mounting holes at the two ends of the circuit board, the bottom ends of the movable plates (21) are slidably arranged in the jig box (1), a first spring (23) for pressing down the mounting columns (24) is fixedly arranged on one side of the top of the movable plates (21), a limiting rod (26) for limiting the mounting columns (24) is slidably arranged on one side of the movable plates (21), and a hooking mechanism for hooking and fixing the mounting columns (24) pulled away from the circuit board after welding is arranged on the top of the limiting rod (26).

2. The adjustable welding fixture of claim 1, wherein: One end of the bidirectional screw rod (2) is fixedly provided with a crank (22) located outside the jig box (1), and the other end of the bidirectional screw rod (2) is fixedly provided with a rotating block rotatably connected in the jig box (1).

3. The adjustable welding fixture of claim 1, wherein: Two groups of notches (11) for the movable plates (21) to pass through and limit the movable plates (21) are arranged on the top of the jig box (1).

4. The adjustable welding fixture of claim 1, wherein: A fixed plate (25) is fixedly arranged on one side of the top of the jig box (1), the first spring (23) is fixedly connected to the bottom of the fixed plate (25), and the mounting columns (24) are fixedly connected to the bottom ends of the first spring (23).

5. A weld fixture for facilitating adjustment according to claim 4, wherein: The limiting rod (26) is fixedly connected to the top of the mounting columns (24), and the top end of the limiting rod (26) penetrates through and extends to the outside of the fixed plate (25).

6. A weld fixture for easy adjustment according to claim 5, characterized in that: The hooking mechanism comprises a hook ring (27) fixedly arranged on one side of the top of the movable plates (21) and a hook (28) rotatably arranged on the top end of the limiting rod (26) and used for hooking the hook ring (27) after moving on the mounting columns (24).

7. The adjustable welding fixture of claim 1, wherein: Suction cups (3) are fixedly arranged on both sides of the bottom of the jig box (1), and air guide tubes (31) in communication and extending to the inside of the jig box (1) are fixedly arranged on the top of the suction cups (3).

8. The adjustable welding fixture of claim 7, wherein: Horizontal rods (4) are rotatably arranged on both sides of the inside of the jig box (1), inclined rotating rods (41) are fixedly arranged on the outer walls of the horizontal rods (4), rubber plugs (42) are fixedly arranged on the bottom ends of the rotating rods (41) and are inserted into air guide holes arranged on the outer walls of the air guide tubes (31), and second springs (43) are fixedly arranged on the top ends of the air guide tubes (31) and used for keeping the rubber plugs (42) in the air guide holes by pushing the top ends of the rotating rods (41).

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