CN215898127U

CN215898127U - Modular PCB pad hole brushes stop device for tin

Info

Publication number: CN215898127U
Application number: CN202121434854.2U
Authority: CN
Inventors: 马秀华
Original assignee: Suzhou Wutong Intelligent Electronics Co ltd
Current assignee: Suzhou Wutong Intelligent Electronics Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-02-22
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a limiting device for brushing tin on a combined PCB pad hole, which comprises: the tool main part, the surface of tool main part is provided with first holding tank, treats to brush tin PCB and places on first holding tank, is provided with the metal reference column on the bottom surface of first holding tank, and the position correspondence of metal reference column treats to brush the pad hole on the tin PCB, and the back of tool main part is provided with the second holding tank that the position corresponds first holding tank, is provided with magnet in the second holding tank, and the position of magnet corresponds the metal reference column. Compared with the prior art, the PCB is fully positioned, the movable positioning columns are arranged in the pad holes on the PCB, which need to be printed with the solder paste in advance, so that the printing quality of the solder paste is ensured, and the problem of solder joint holes is effectively solved.

Description

Modular PCB pad hole brushes stop device for tin

Technical Field

The utility model belongs to the technical field of PCB processing, and particularly relates to a limiting device for brushing tin on a combined PCB pad hole.

Background

Pcb (printed circuit board), i.e. printed wiring board, printed circuit board for short, is one of the important parts in the electronics industry, and is a carrier for electrical connection of electronic components. The printed circuit board consists of an insulating bottom plate, a connecting lead and a welding disc for assembling and welding electronic elements, and has double functions of a conductive circuit and the insulating bottom plate. The circuit can replace complex wiring to realize electrical connection among elements in the circuit, thereby simplifying the assembly and welding work of electronic products, reducing the wiring workload in the traditional mode and greatly lightening the labor intensity of workers; and the volume of the whole machine is reduced, the product cost is reduced, and the quality and the reliability of the electronic equipment are improved.

After wave soldering, the large-size jack parts on the PCB have abnormity of solder joint holes at the positions of pins, and solder paste needs to be printed on the pad holes on the back surfaces of the pins in advance. When the existing jig is used for positioning a PCB, the quality of printing solder paste on a pad hole cannot be guaranteed, and the problem of welding spot cavities cannot be effectively solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the utility model provides a modular limiting device for PCB pad hole brush tin fully positions PCB, and the downthehole movable reference column that is provided with of pad that needs the solder paste of printing in advance on the PCB ensures the printing quality of solder paste, effectively solves the hollow problem of solder joint.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a modular PCB pad hole is brushed stop device for tin, includes the tool main part, and the surface of tool main part is provided with first holding tank, treats to brush tin PCB and places on first holding tank, is provided with the metal reference column on the bottom surface of first holding tank, and the position correspondence of metal reference column treats to brush the pad hole on the tin PCB, and the back of tool main part is provided with the second holding tank that the position corresponds first holding tank, is provided with magnet in the second holding tank, and the position correspondence metal reference column of magnet.

As a further description of the above technical solution:

magnet setting is provided with at least one sucking disc in the casing, and the sucking disc adsorbs on the bottom surface of second holding tank.

As a further description of the above technical solution:

the shell is provided with 3 suckers which are circumferentially arranged at equal intervals.

As a further description of the above technical solution:

be provided with elastic connection's spacing roof on the lateral wall of first holding tank.

As a further description of the above technical solution:

spacing roof is embedded to be set up on the lateral wall of first holding tank.

As a further description of the above technical solution:

the back of the limiting top plate is provided with a plurality of guide posts which are arranged in parallel, and the guide posts penetrate through the side wall of the first accommodating groove.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the utility model, the PCB to be brushed with tin is placed in the first accommodating groove on the surface of the jig main body, the metal positioning column is placed in the pad hole needing to be brushed with tin, the height of the metal positioning column is equal to that of the pad hole, and the position of the metal positioning column is fixed by the magnet in the second accommodating groove on the back of the jig main body in an adsorption manner, so that the tin brushing effect at the pad hole is ensured during tin brushing. The number of the metal positioning columns can be set according to the requirement (namely the number of the pad holes needing to be brushed with tin), so that the printing quality of the tin paste is ensured, and the problem of welding spot cavities is effectively solved.

2. In the utility model, in order to further position the PCB to be subjected to tin brushing, the side wall of the first accommodating groove is provided with the elastically connected limiting top plate, so that the side surface of the PCB to be subjected to tin brushing is extruded, and the firm positioning is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a limiting device for tin brushing of a combined type PCB pad hole.

Fig. 2 is a schematic view of a top view angle structure of a limiting device for tin brushing of a combined PCB pad hole.

Fig. 3 is a schematic structural diagram of a magnet in a limiting device for tin brushing of a combined type PCB pad hole.

Illustration of the drawings:

1. a jig main body; 11. a first accommodating groove; 12. a second accommodating groove; 2. a metal positioning post; 3. a magnet; 4. a housing; 5. a suction cup; 6. a limiting top plate; 61. and a guide post.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a modular PCB pad hole brushes stop device for tin, includes tool main part 1, the surface of tool main part 1 is provided with first holding tank 11, treat to brush tin PCB and place on first holding tank 11, be provided with metal reference column 2 on the bottom surface of first holding tank 11, the position correspondence of metal reference column 2 treats to brush the pad hole on the tin PCB, the back of tool main part 1 is provided with the second holding tank 12 that the position corresponds first holding tank 11, be provided with magnet 3 in the second holding tank 12, the position correspondence of magnet 3 metal reference column 2.

Magnet 3 sets up in casing 4, is provided with at least one sucking disc 5 on casing 4, and sucking disc 5 adsorbs on the bottom surface of second holding tank 12, and the position that can assistance-localization real-time magnet 3 of washing dish improves magnet 3's installation fastness.

Be provided with 3 sucking discs 5 that circumference equidistance was arranged on casing 4, improve magnet 3's installation fastness, and then guarantee the absorption location effect to metal reference column 2.

Be provided with elastic connection's spacing roof 6 on the lateral wall of first holding tank 11, further fix a position and treat to brush tin PCB.

Spacing roof 6 is embedded to be set up on the lateral wall of first holding tank 11, improves the scope of first holding tank 11 location PCB, better location.

The back of the limit top plate 6 is provided with a plurality of guide posts 61 which are arranged in parallel, the guide posts 61 penetrate through the side wall of the first accommodating groove 11, and the limit top plate 6 is guaranteed to move smoothly.

The working principle is as follows: treat that brush tin PCB places in the first holding tank on tool main part surface, place the metal reference column in the pad hole that needs to brush tin, the height that highly equals the pad hole of metal reference column, the position of metal reference column is fixed through the magnet absorption in the tool main part back second holding tank, guarantees the brush tin effect of pad hole department when brushing tin. The number of the metal positioning columns can be set according to the requirement (namely the number of the pad holes needing to be brushed with tin), so that the printing quality of the tin paste is ensured, and the problem of welding spot cavities is effectively solved. Treat to brush tin PCB for further location, be provided with elastic connection's spacing roof on the lateral wall of first holding tank, treat to brush tin PCB's side formation extrusion, guarantee the location firm.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a modular PCB pad hole is stop device for brush tin, a serial communication port, including tool main part (1), the surface of tool main part (1) is provided with first holding tank (11), treats to brush tin PCB and places on first holding tank (11), be provided with metal reference column (2) on the bottom surface of first holding tank (11), the position of metal reference column (2) corresponds treat to brush the pad hole on the tin PCB, the back of tool main part (1) is provided with the position and corresponds second holding tank (12) of first holding tank (11), be provided with magnet (3) in second holding tank (12), the position of magnet (3) corresponds metal reference column (2).

2. The limiting device for tin brushing of the combined PCB pad hole is characterized in that the magnet (3) is arranged in a shell (4), at least one sucking disc (5) is arranged on the shell (4), and the sucking disc (5) is adsorbed on the bottom surface of the second accommodating groove (12).

3. A limiting device for combined PCB pad hole tin brushing according to claim 2, characterized in that the shell (4) is provided with 3 sucking discs (5) which are circumferentially arranged at equal intervals.

4. The limiting device for brushing tin on a combined PCB pad hole is characterized in that a limiting top plate (6) in elastic connection is arranged on the side wall of the first accommodating groove (11).

5. The limiting device for combined PCB pad hole tin brushing of claim 4, wherein the limiting top plate (6) is embedded on the side wall of the first accommodating groove (11).

6. The limiting device for tin brushing of the combined PCB pad hole is characterized in that a plurality of guide posts (61) which are arranged in parallel are arranged on the back surface of the limiting top plate (6), and the guide posts (61) penetrate through the side wall of the first accommodating groove (11).