CN220127807U

CN220127807U - SMT welding jig capable of preventing tin pick-up

Info

Publication number: CN220127807U
Application number: CN202321503919.3U
Authority: CN
Inventors: 李俊武; 周浪; 徐建国; 钟雯; 叶慎阳; 吴泽恩; 蔡燕; 黎定; 沈魁杰; 唐仁
Original assignee: KUNSHAN MINGCHUANG ELECTRONIC TECHNOLOGY CO LTD
Current assignee: KUNSHAN MINGCHUANG ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-12-05
Anticipated expiration: 2033-06-14

Abstract

The utility model discloses a tin pick-up prevention SMT welding jig which comprises a welding shell, wherein a baffle plate is fixedly connected to an inner cavity of the welding shell, vent holes are formed in the front side and the rear side of the welding shell, a placement plate is fixedly connected to the top of the baffle plate, the placement plate is rectangular in shape, a positioning component used for clamping four corners of a PCB (printed circuit board) is fixedly connected to the left side of the bottom of the inner cavity of the welding shell, the bottom of a vapor pump is fixedly connected with the bottom of the inner cavity of the welding shell, a vapor pipe is communicated with the right side of the vapor pump, and a four-way pipe is communicated with the top of the vapor pipe.

Description

SMT welding jig capable of preventing tin pick-up

Technical Field

The utility model belongs to the technical field of welding jigs, and particularly relates to a welding jig for preventing tin pick-up SMT.

Background

The welding jig is a welding jig designed and manufactured according to the dimension coordinate points of the appearance of the welded piece calibrated when the welding product is designed.

The utility model relates to a prevent tin pick up SMT welding jig, when traditional SMT welding jig welds the PCB board, the phenomenon of tin pick up can take place on the subassembly of centre gripping PCB board often, and the basic cause is because the contact surface of centre gripping subassembly and PCB board is too big, consequently the staff can not appear above-mentioned condition when the welding, consequently to above-mentioned problem, the utility model relates to a welding jig that has the phenomenon of reducing tin pick up takes place has reduced the area of contact that adds holding subassembly and PCB board, and centre gripping stability is unchangeable simultaneously, wholly adopts the cylinder to impel the centre gripping, can reduce the loss of electric energy, improves welding jig's practicality and functionality.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides the SMT welding jig for preventing tin pick-up, which has the advantage of reducing the tin pick-up phenomenon, and solves the problems that the contact surface between the clamping assembly and the PCB is overlarge, the occupied space is larger and the tin pick-up phenomenon is easy to occur when the PCB is welded by the existing welding jig.

The utility model discloses an SMT (surface mount technology) welding jig for preventing tin pick-up, which comprises a welding shell, wherein a baffle plate is fixedly connected to an inner cavity of the welding shell, vent holes are formed in the front side and the rear side of the welding shell, a placing plate is fixedly connected to the top of the baffle plate, the placing plate is rectangular in shape, and a positioning assembly for clamping four corners of a PCB (printed circuit board) is fixedly connected to the left side of the bottom of the inner cavity of the welding shell.

The positioning assembly comprises a steam pump, the bottom of the steam pump is fixedly connected with the bottom of an inner cavity of the welding shell, the right side of the steam pump is communicated with a gas pipe, the top of the gas pipe is communicated with a four-way pipe, four connecting ports of the four-way pipe are all communicated with hoses, one opposite sides of the four hoses are all penetrated to the outer side of the welding shell and communicated with a pressurizing shell, the surface of the pressurizing shell is fixedly connected with the welding shell, the inner cavity of the pressurizing shell is provided with a piston pad, one opposite sides of the four piston pads are fixedly connected with push rods, and one opposite sides of the four push rods are fixedly connected with clamping blocks.

Preferably, one end of the hose penetrates through the inner cavity of the pressurizing shell and is communicated with the amplifying shell, and the amplifying shell is made of rubber.

As the preferable mode of the utility model, the surface of the four-way pipe is fixedly connected with four limiting blocks, and the tops of the four limiting blocks are fixedly connected with the partition plate.

As the preferable mode of the utility model, the bottoms of the front side and the rear side of the steam pump are fixedly connected with positioning blocks, and the bottoms of the positioning blocks are fixedly connected with the bottoms of the inner cavities of the welding shells.

As the preferable mode of the utility model, the surface of the pressurized shell is sleeved with the fixing ring, and one side of the fixing ring, which is close to the inner wall of the welding shell, is fixedly connected with the inner wall of the welding shell.

As the preferable mode of the utility model, the two sides of the front side and the rear side of the welding shell are fixedly connected with mounting plates, and the surfaces of the mounting plates are provided with mounting holes.

As preferable in the utility model, the front side and the rear side of the placing plate are fixedly connected with reinforcing blocks, and the bottoms of the reinforcing blocks are fixedly connected with the partition plates.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the matched use of the welding shell, the partition plate, the vent hole, the placing plate, the positioning component, the air pump, the four-way pipe, the hose, the pressurizing shell, the piston pad, the push rod and the clamping block, the problems that the contact surface of the clamping component and the PCB is overlarge, the occupied space is large and the tin dipping phenomenon is easy to occur when the PCB is welded by the existing welding jig are solved.

2. When a worker needs to weld a PCB, the worker firstly places the PCB on the top of the placement plate, then the air pump is turned on, at the moment, the air pump guides an air source into the four-way pipe through the air pipe, then the four-way pipe dispersedly injects origins into four hoses through four air outlets, at the moment, the origins enter the pressurizing shell along the hoses and apply pressure to the interior of the pressurizing shell, at the moment, the four push rods and the clamping blocks are driven to move to opposite sides by air pressure in a closed environment, and when the four clamping blocks move to a certain position, the four clamping blocks are clamped with four corners of the PCB, so that the positioning is performed, meanwhile, the contact area with the PCB is reduced, and the phenomenon of tin dipping can be reduced when the worker performs the welding process; through setting up the expansion shell, the material of expansion shell is rubber, has played the inside effect of increase air supply entering booster shell, through setting up the stopper, stopper and baffle fixed connection have played the positioning action to the four-way pipe, through setting up the locating piece, the locating piece has played the positioning action to the pump with the bottom fixed connection of welding shell inner chamber, through setting up solid fixed ring, solid fixed ring and the inner wall fixed connection of welding shell have played the positioning action to the booster shell.

3. The utility model plays a role in facilitating the installation and positioning of the welding shell by workers through the matching use of the installation plate and the installation hole, and plays a role in reinforcing the placing plate through the fixed connection of the reinforcing block and the partition plate.

Drawings

FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of the internal structure of a weld enclosure provided by an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a positioning assembly according to an embodiment of the present utility model.

In the figure: 1. welding the shell; 2. a partition plate; 3. a vent hole; 4. placing a plate; 5. a positioning assembly; 501. a steam pump; 502. a four-way pipe; 503. a hose; 504. a pressurized shell; 505. a piston pad; 506. a push rod; 507. a clamping block; 508. amplifying the shell; 509. a limiting block; 510. a positioning block; 511. a fixing ring; 6. a mounting plate; 7. a mounting hole; 8. and (5) reinforcing the block.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the welding jig for preventing tin pick-up provided by the embodiment of the utility model comprises a welding shell 1, wherein a baffle plate 2 is fixedly connected to an inner cavity of the welding shell 1, vent holes 3 are formed in the front side and the rear side of the welding shell 1, a placing plate 4 is fixedly connected to the top of the baffle plate 2, the placing plate 4 is rectangular, and a positioning assembly 5 for clamping four corners of a PCB board is fixedly connected to the left side of the bottom of the inner cavity of the welding shell 1.

The locating component 5 comprises a steam pump 501, the bottom of the steam pump 501 is fixedly connected with the bottom of an inner cavity of the welding shell 1, the right side of the steam pump 501 is communicated with a gas pipe, the top of the gas pipe is communicated with a four-way pipe 502, four connecting ports of the four-way pipe 502 are all communicated with hoses 503, one opposite side of each hose 503 is penetrated to the outer side of the welding shell 1 and communicated with a pressurizing shell 504, the surface of the pressurizing shell 504 is fixedly connected with the welding shell 1, a piston pad 505 is arranged in the inner cavity of the pressurizing shell 504, one opposite side of each piston pad 505 is fixedly connected with a push rod 506, and one opposite side of each push rod 506 is fixedly connected with a clamping block 507.

Referring to fig. 2 and 3, one end of the hose 503 penetrates through the inner cavity of the pressurizing shell 504 and is communicated with the amplifying shell 508, the amplifying shell 508 is made of rubber, four limiting blocks 509 are fixedly connected to the surface of the four-way pipe 502, the top parts of the four limiting blocks 509 are fixedly connected with the partition plate 2, positioning blocks 510 are fixedly connected to the bottoms of the front side and the rear side of the air pump 501, the bottom of the positioning blocks 510 is fixedly connected with the bottom of the inner cavity of the welding shell 1, a fixing ring 511 is sleeved on the surface of the pressurizing shell 504, and one side, close to the inner wall of the welding shell 1, of the fixing ring 511 is fixedly connected with the inner wall of the welding shell 1.

The scheme is adopted: when the staff needs to weld the process to the PCB board, at first the staff places the PCB board at the top of placing the board 4, then the pump 501 opens, this moment the pump 501 will air supply is through the inside of gas-supply pipe leading-in four-way pipe 502, four gas outlets of four-way pipe 502 rethread are with the scattered injection of origin in four hoses 503, this moment the origin will get into the inside of booster shell 504 along hose 503 and exert pressure to the inside of booster shell 504, this moment receive atmospheric pressure in confined environment will drive four push rods 506 and fixture block 507 to opposite side and remove, when four fixture block 507 remove to certain position, will carry out the joint with the four corners of PCB board, thereby to the location, the area of contact with the PCB board has also been reduced simultaneously, the staff will reduce the phenomenon emergence of tin pick up when carrying out the welding process, through setting up the amplification shell 508, the material of amplification shell 508 is rubber, the effect that the increase air supply got into booster shell 504 is inside has been played, through setting up stopper 509, stopper 509 and baffle 2 fixed connection, the positioning effect to four positioning block 502 has been played, through setting up 510, the bottom of inner chamber 1 and fixed connection to the fixed ring 511, the fixed connection to the fixed ring 511 has played positioning effect to the fixed ring.

Referring to fig. 1 and 2, both sides of the front side and the rear side of the welding shell 1 are fixedly connected with mounting plates 6, mounting holes 7 are formed in the surfaces of the mounting plates 6, reinforcing blocks 8 are fixedly connected to both the front side and the rear side of the placing plate 4, and the bottoms of the reinforcing blocks 8 are fixedly connected with the partition plates 2.

The scheme is adopted: through setting up the cooperation of mounting panel 6 and mounting hole 7 and using, played the effect that the staff will weld shell 1 and install the location of being convenient for, through setting up reinforcing block 8, reinforcing block 8 and baffle 2 fixed connection have played the reinforcement effect to placing board 4.

The working principle of the utility model is as follows:

when in use, when a worker needs to weld a PCB, the worker firstly places the PCB at the top of the placing plate 4, then the air pump 501 is opened, at the moment, the air pump 501 guides an air source into the four-way pipe 502 through the air pipe, then the four-way pipe 502 disperses and injects origins into the four hoses 503 through the four air outlets, at the moment, the origins enter the pressurizing shell 504 along the hoses 503 and press the interior of the pressurizing shell 504, at the moment, the four push rods 506 and the clamping blocks 507 are driven to move to opposite sides by air pressure in a closed environment, when the four clamping blocks 507 move to a certain position, the four clamping blocks are clamped with four corners of the PCB, so that the positioning is performed, meanwhile, the contact area with the PCB is reduced, and the phenomenon of tin dipping can be reduced when the worker performs the welding process, so that the problem that when the PCB is welded by the traditional welding jig, the contact surface of a clamping assembly and the PCB is overlarge, the occupied space is larger, and the tin dipping phenomenon is easy to occur is solved.

To sum up: this prevent to be stained with tin SMT welding jig through setting up welding shell 1, baffle 2, ventilation hole 3, placing board 4, locating component 5, pump 501, four-way pipe 502, hose 503, booster shell 504, piston pad 505, push rod 506 and fixture block 507's cooperation use, has solved current welding jig when welding the PCB board, and clamping component is too big with the contact surface of PCB board, occupation space is great, takes place the problem of being stained with the tin phenomenon easily.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Prevent to be stained with tin SMT welding jig, including welding shell (1), its characterized in that: the inner cavity of the welding shell (1) is fixedly connected with a partition board (2), vent holes (3) are formed in the front side and the rear side of the welding shell (1), a placement plate (4) is fixedly connected to the top of the partition board (2), the placement plate (4) is rectangular, and a positioning assembly (5) for clamping four corners of a PCB (printed circuit board) is fixedly connected to the left side of the bottom of the inner cavity of the welding shell (1);

the positioning assembly (5) comprises a steam pump (501), the bottom of the steam pump (501) is fixedly connected with the bottom of an inner cavity of the welding shell (1), a gas pipe is communicated with the right side of the steam pump (501), a four-way pipe (502) is communicated with the top of the gas pipe, hoses (503) are communicated with four connecting ports of the four-way pipe (502), opposite sides of the four hoses (503) penetrate through the outer side of the welding shell (1) and are communicated with a pressurizing shell (504), the surface of the pressurizing shell (504) is fixedly connected with the welding shell (1), a piston pad (505) is arranged in the inner cavity of the pressurizing shell (504), push rods (506) are fixedly connected to one sides of the four piston pads (505), and clamping blocks (507) are fixedly connected to one sides of the four push rods (506).

2. The anti-tin SMT soldering jig of claim 1, wherein: one end of the hose (503) penetrates through the inner cavity of the pressurizing shell (504) and is communicated with the amplifying shell (508), and the amplifying shell (508) is made of rubber.

3. The solder pick-up preventing SMT soldering jig according to claim 2, wherein: four limiting blocks (509) are fixedly connected to the surface of the four-way pipe (502), and the tops of the four limiting blocks (509) are fixedly connected with the partition plate (2).

4. The tin pick-proof SMT soldering jig of claim 3, wherein: the bottoms of the front side and the rear side of the air pump (501) are fixedly connected with positioning blocks (510), and the bottoms of the positioning blocks (510) are fixedly connected with the bottoms of the inner cavities of the welding shells (1).

5. The anti-tin pick SMT soldering jig of claim 4, wherein: the surface of the pressurizing shell (504) is sleeved with a fixing ring (511), and one side, close to the inner wall of the welding shell (1), of the fixing ring (511) is fixedly connected with the inner wall of the welding shell (1).

6. The anti-tin SMT soldering jig of claim 1, wherein: the welding device is characterized in that mounting plates (6) are fixedly connected to the two sides of the front side and the rear side of the welding shell (1), and mounting holes (7) are formed in the surface of each mounting plate (6).

7. The anti-tin SMT soldering jig of claim 1, wherein: the front side and the rear side of the placing plate (4) are fixedly connected with reinforcing blocks (8), and the bottoms of the reinforcing blocks (8) are fixedly connected with the partition plates (2).