Wave soldering jig

Abstract

The utility model relates to the field of welding jigs, and discloses a wave-soldering jig which comprises an upper frame, the upper frame is detachably arranged above a lower frame, a plurality of fixing plates are fixed to the inner bottom face of the lower frame, first threaded grooves are formed in the top faces of the fixing plates respectively, and the first threaded grooves are communicated with the upper frame. A plurality of extrusion plates are arranged below the upper frame, two first springs are fixed to the top faces of the extrusion plates respectively, a plurality of second springs are fixed to the bottom face of the upper frame, and first extrusion columns are fixed to the bottom ends of the second springs respectively. According to the utility model, through the cooperative use of the upper frame, the first bolt, the extrusion plate, the first spring, the second spring and the first extrusion column, the PCB can be extruded and fixed, the PCB is prevented from shaking during wave soldering, the stability of the PCB is improved, and the soldering quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of welding fixture, specifically is a wave -soldering welding fixture. BACKGROUND

[0002] In the component welding process of printed circuit board, the printed circuit board needs to be wave-soldered. Wave-soldering is to make the welding surface of the printed circuit board directly contact with high-temperature liquid tin to achieve the purpose of welding, and the high-temperature liquid tin maintains an inclined plane, and the liquid tin forms a wave-like shape by a special device. The wave-soldering of the circuit board needs to use a welding jig to fix the circuit board.

[0003] According to the Chinese patent with the announcement number CN219026232U, a wave-soldering welding fixture includes a lower frame and an upper frame, the upper frame is arranged on the lower frame, an inner plate is horizontally arranged between the upper frame and the lower frame, and the circuit board is placed on the inner plate; characterized in that it further comprises a pressing assembly, the pressing assembly is arranged in four groups, the pressing assembly is arranged on the upper frame, two groups of the pressing assembly are arranged on both sides of the circuit board, and the pressing part of the four groups of the pressing assembly is attached to the top of the four corners of the circuit board.

[0004] In the above scheme, the PCB board is fixed by the sleeve ring, the pressing plate and the pressing block, which has the following disadvantages: the fixing effect is poor when the welding fixture is used, which may cause the PCB board to shake during wave-soldering, thereby reducing the stability of the PCB board and the welding quality. Utility model content

[0005] The utility model aims at providing a wave-soldering welding fixture to solve the problem that the fixing effect is poor when the welding fixture is used, which may cause the PCB board to shake during wave-soldering, thereby reducing the stability of the PCB board and the welding quality.

[0006] In order to achieve the above-mentioned utility model purposes, the utility model adopts the following technical scheme: a wave-soldering welding fixture, including upper frame, the upper frame is detachable setting in the upper of lower frame, the inside bottom surface of lower frame is fixed with a plurality of fixed plates, the top surface of a plurality of fixed plates is equipped with first thread groove respectively, the top surface of upper frame is equipped with a plurality of first thread holes, a plurality of first thread holes are connected with first bolt respectively by thread, the thread end of a plurality of first bolt is connected with a plurality of first thread grooves respectively by thread, the bottom of upper frame is equipped with a plurality of extrusion plates, the top surface of a plurality of extrusion plates is fixed with two first springs respectively, the top end of two first springs is fixedly connected with the bottom surface of upper frame, the bottom surface of upper frame is fixed with a plurality of second springs, and the bottom end of a plurality of second springs is fixed with first extrusion column respectively.

[0007] Preferably, the inner bottom surface of the lower frame is provided with a plurality of second threaded grooves, the inner bottom surface of the lower frame is detachably provided with a plurality of fixing blocks, the top surface of each of the fixing blocks is provided with a second threaded hole, and the threaded end of each of the second threaded holes is threadedly connected with a second threaded hole.

[0008] Preferably, the bottom surface of the upper frame is fixed with a plurality of third springs, and the bottom end of each of the third springs is fixed with a second extrusion column.

[0009] Preferably, the upper frame is fixed with a plurality of first limiting pins in communication, the top surface of each of the extrusion plates is provided with two first limiting grooves, the first limiting pins are slidably inserted into the first limiting grooves, the first springs are wrapped around the first limiting pins, the upper frame is fixed with a plurality of second limiting pins in communication, the top surface of each of the first extrusion columns is provided with a second limiting groove, the second limiting pins are slidably inserted into the second limiting grooves, the second springs are wrapped around the second limiting pins, the upper frame is fixed with a plurality of third limiting pins in communication, the top surface of each of the second extrusion columns is provided with a third limiting groove, the third limiting pins are slidably inserted into the third limiting grooves, and the third springs are wrapped around the third limiting pins.

[0010] Preferably, the bottom surface of each of the extrusion plates is fixed with a first rubber block, and the bottom surface of each of the first extrusion columns and the second extrusion columns is fixed with a second rubber block.

[0011] Preferably, the upper frame is fixed with a plurality of positioning pins in communication, the inner bottom surface of the lower frame is fixed with two positioning plates, the top surface of each of the positioning plates is provided with two positioning grooves, and the positioning grooves position the positioning pins.

[0012] Compared with the prior art, the wave soldering jig has the following beneficial effects:

[0013] One, in use, the worker first places the PCB board in the inside of the lower frame, through rotating the fixed block and using the connection of the second bolt and the second threaded groove, thereby preliminarily fixing the PCB board, ensuring the stability of the PCB board before welding, reducing the welding error caused by improper position, then the worker places the upper frame above the lower frame, through aligning the first threaded hole and the first threaded groove, and then rotating the first bolt to fix it, at this time the extrusion plate and the first extrusion column exert moderate pressure on the PCB board under the action of the spring, ensuring that it will not shake during the wave soldering process, the buffering effect of the first spring and the second spring effectively prevents the PCB board from being damaged due to excessive pressure, improving the welding quality and the integrity of the PCB board. Through the cooperation of the upper frame, the first bolt, the extrusion plate, the first spring, the second spring and the first extrusion column, it is beneficial to extrude and fix the PCB board, prevent it from shaking during wave soldering, improve the stability of the PCB board, and thus improve the welding quality and production efficiency;

[0014] Two, in use, through the cooperation of the third spring and the second extrusion column, it is beneficial to further enhance the stability of the PCB board, can exert appropriate pressure on other parts of the PCB board, ensure that it will not be displaced due to external interference during the welding process, not only improve the welding quality, but also make the jig applicable to more types of PCB boards. Through the cooperation of the first limiting pin, the second limiting pin and the third limiting pin, it is beneficial to ensure that the extrusion plate, the first extrusion column and the second extrusion column will not deviate or shake when extruding the PCB board, improving the stability of the jig;

[0015] Three, in use, through the cooperation of the first rubber block and the second rubber block, it is beneficial to increase the friction between the jig and the PCB board, prevent the PCB board from sliding during the welding process, also play a buffering role, protect the PCB board from being damaged. When the worker installs the upper frame and the lower frame, first slide the positioning pin into the positioning slot, the worker can realize the positioning of the upper frame, so that the first threaded hole and the first threaded groove can accurately correspond, not only improving the installation efficiency, but also reducing the quality problems caused by improper installation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the embodiment.

[0017] Figure 2 It is an exploded view of the embodiment.

[0018] Figure 3 It is an exploded view of the upper frame and the extrusion plate in the embodiment.

[0019] Figure 4 It is a Figure 2 enlarged view of A in the embodiment.

[0020] In the figure: 1, the upper frame; 2, the lower frame; 3, the fixed plate; 4, the first threaded groove; 5, the first threaded hole; 6, the first bolt; 7, the extrusion plate; 8, the first spring; 9, the second spring; 10, the first extrusion column; 11, the second threaded groove; 12, the fixed block; 13, the second threaded hole; 14, the second bolt; 15, the third spring; 16, the second extrusion column; 17, the first limiting pin; 18, the first limiting groove; 19, the second limiting pin; 20, the second limiting groove; 21, the third limiting pin; 22, the third limiting groove; 23, the first rubber block; 24, the second rubber block; 25, the positioning pin; 26, the positioning plate; 27, the positioning groove. DETAILED DESCRIPTION

[0021] The preferred embodiments of the utility model will be described in detail below with reference to the drawings.

[0022] As Figures 1-4 shown in the figure, a wave soldering fixture, including upper frame 1, upper frame 1 is detachably arranged on the upper of lower frame 2, the inside bottom surface of lower frame 2 is fixed with several fixed plates 3, the top surface of several fixed plates 3 is respectively provided with first threaded groove 4, the top surface of upper frame 1 is provided with several first threaded holes 5, several first threaded holes 5 are respectively connected with first bolt 6 in threaded, the threaded end of several first bolts 6 is respectively connected with the inside of several first threaded grooves 4 in threaded, the lower of upper frame 1 is equipped with several extrusion plates 7, the top surface of several extrusion plates 7 is respectively fixed with two first springs 8, the top end of two first springs 8 is respectively fixedly connected with the bottom surface of upper frame 1, the bottom surface of upper frame 1 is fixed with several second springs 9, the bottom end of several second springs 9 is respectively fixed with first extrusion column 10, the inside bottom surface of lower frame 2 is provided with several second threaded grooves 11, the inside bottom surface of lower frame 2 is detachably provided with several fixed blocks 12, the top surface of several fixed blocks 12 is respectively provided with second threaded hole 13, several second threaded holes 13 are respectively connected with second bolt 14 in threaded, the threaded end of several second bolts 14 is respectively connected with the inside of several second threaded grooves 11 in threaded.

[0023] In use, the worker first places the PCB board inside the lower frame 2, and preliminarily fixes the PCB board by rotating the fixing block 12 and connecting the second bolt 14 with the second threaded groove 11, thereby ensuring the stability of the PCB board before welding, reducing the welding error caused by improper position, and then the worker places the upper frame 1 above the lower frame 2, aligns the first threaded hole 5 with the first threaded groove 4, and then rotates the first bolt 6 to fix it, at this time the extrusion plate 7 and the first extrusion column 10 apply moderate pressure to the PCB board under the action of the spring, ensuring that the PCB board does not shake during wave soldering, and the buffering effect of the first spring 8 and the second spring 9 effectively prevents the PCB board from being damaged due to excessive pressure, thereby improving the welding quality and the integrity of the PCB board.

[0024] The cooperation of the upper frame 1, the first bolt 6, the extrusion plate 7, the first spring 8, the second spring 9 and the first extrusion column 10 is conducive to extruding and fixing the PCB board, preventing it from shaking during wave soldering, improving the stability of the PCB board, and thereby improving the welding quality and production efficiency.

[0025] As shown in Figures 1-3 , the bottom surface of the upper frame 1 is fixed with a plurality of third springs 15, and the bottom ends of the plurality of third springs 15 are respectively fixed with second extrusion columns 16.

[0026] In use, the cooperation of the third spring 15 and the second extrusion column 16 is conducive to further enhancing the stability of the PCB board, and can apply appropriate pressure to other parts of the PCB board to ensure that it does not shift due to external interference during welding, thereby not only improving the welding quality, but also making the jig applicable to more types of PCB boards.

[0027] As shown in Figures 1-3 , the upper frame 1 is fixed with a plurality of first limiting pins 17, the top surface of each of the plurality of extrusion plates 7 is provided with two first limiting grooves 18, the first limiting pin 17 is slidably inserted into the first limiting groove 18, and the first spring 8 surrounds the first limiting pin 17. The upper frame 1 is fixed with a plurality of second limiting pins 19, the top surface of each of the plurality of first extrusion columns 10 is provided with a second limiting groove 20, the second limiting pin 19 is slidably inserted into the second limiting groove 20, and the second spring 9 surrounds the second limiting pin 19. The upper frame 1 is fixed with a plurality of third limiting pins 21, the top surface of each of the plurality of second extrusion columns 16 is provided with a third limiting groove 22, the third limiting pin 21 is slidably inserted into the third limiting groove 22, and the third spring 15 surrounds the third limiting pin 21.

[0028] In use, through the cooperation of the first limiting pin 17, the second limiting pin 19 and the third limiting pin 21, it is beneficial to ensure that the extrusion plate 7, the first extrusion column 10 and the second extrusion column 16 will not be offset or shaken during the extrusion of the PCB, thereby improving the stability of the jig.

[0029] As shown in Figures 1-4 The bottom surface of each of the plurality of extrusion plates 7 is fixed with a first rubber block 23, the bottom surface of each of the plurality of first extrusion columns 10 and the plurality of second extrusion columns 16 is fixed with a second rubber block 24, the upper frame 1 is fixed with a plurality of positioning pins 25 in communication, the inner bottom surface of the lower frame 2 is fixed with two positioning plates 26, the top surface of each of the two positioning plates 26 is provided with two positioning grooves 27, and the positioning grooves 27 position the positioning pins 25.

[0030] In use, through the cooperation of the first rubber block 23 and the second rubber block 24, it is beneficial to increase the friction between the jig and the PCB, prevent the PCB from sliding during the welding process, and also play a buffering role to protect the PCB from being damaged. When the upper frame 1 and the lower frame 2 are installed by the worker, the positioning pin 25 is first slidably inserted into the positioning groove 27, the worker can realize the positioning of the upper frame 1, so that the first threaded hole 5 and the first threaded groove 4 can accurately correspond, thereby improving the installation efficiency and reducing the quality problems caused by improper installation.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A wave soldering jig comprising an upper frame (1) which is detachably arranged above a lower frame (2), characterized in that The inside bottom surface of the lower frame (2) is fixed with a plurality of fixed plates (3), the top surface of each of the plurality of fixed plates (3) is provided with a first threaded groove (4), the top surface of the upper frame (1) is provided with a plurality of first threaded holes (5), a first threaded hole (5) is threadedly connected with a first bolt (6), the threaded end of the first bolt (6) is threadedly connected with the first threaded groove (4), the lower side of the upper frame (1) is provided with a plurality of extrusion plates (7), the top surface of each of the plurality of extrusion plates (7) is fixed with two first springs (8), the top end of each of the two first springs (8) is fixedly connected with the bottom surface of the upper frame (1), the bottom surface of the upper frame (1) is fixed with a plurality of second springs (9), the bottom end of each of the plurality of second springs (9) is fixed with a first extrusion column (10).

2. The wave soldering fixture of claim 1, wherein: The inside bottom surface of the lower frame (2) is provided with a plurality of second threaded grooves (11), the inside bottom surface of the lower frame (2) is detachably provided with a plurality of fixed blocks (12), the top surface of each of the plurality of fixed blocks (12) is provided with a second threaded hole (13), each of the plurality of second threaded holes (13) is threadedly connected with a second bolt (14), the threaded end of each of the plurality of second bolts (14) is threadedly connected with the inside of each of the plurality of second threaded grooves (11).

3. The wave soldering fixture of claim 2, wherein: The bottom surface of the upper frame (1) is fixed with a plurality of third springs (15), the bottom end of each of the plurality of third springs (15) is fixed with a second extrusion column (16).

4. The wave soldering fixture of claim 3, wherein: The upper frame (1) is continuously provided with a plurality of first limiting pins (17), the top surface of each of the plurality of extrusion plates (7) is provided with two first limiting grooves (18), the first limiting pin (17) is slidably inserted into the first limiting groove (18), the first spring (8) surrounds the first limiting pin (17), the upper frame (1) is continuously provided with a plurality of second limiting pins (19), the top surface of each of the plurality of first extrusion columns (10) is provided with a second limiting groove (20), the second limiting pin (19) is slidably inserted into the second limiting groove (20), the second spring (9) surrounds the second limiting pin (19), the upper frame (1) is continuously provided with a plurality of third limiting pins (21), the top surface of each of the plurality of second extrusion columns (16) is provided with a third limiting groove (22), the third limiting pin (21) is slidably inserted into the third limiting groove (22), the third spring (15) surrounds the third limiting pin (21).

5. The wave soldering fixture of claim 1, wherein: The bottom surface of each of the plurality of extrusion plates (7) is fixed with a first rubber block (23), the bottom surface of each of the plurality of first extrusion columns (10) and the plurality of second extrusion columns (16) is fixed with a second rubber block (24).

6. The wave soldering fixture of claim 5, wherein: The upper frame (1) is fixed with a plurality of positioning pins (25) in communication, the inner bottom surface of the lower frame (2) is fixed with two positioning plates (26), the top surfaces of the two positioning plates (26) are respectively provided with two positioning grooves (27), and the positioning grooves (27) position the positioning pins (25).

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