CN217749770U

CN217749770U - Auxiliary device for welding field effect transistor and circuit board

Info

Publication number: CN217749770U
Application number: CN202221640125.7U
Authority: CN
Inventors: 孙小清; 叶增文
Original assignee: Guangzhou Nuochen Electronic Co ltd
Current assignee: Guangzhou Nuochen Electronic Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-08
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses an auxiliary device for welding a field effect tube and a circuit board, which comprises a workbench for placing the circuit board, a clamp holder arranged on the workbench for clamping the circuit board, and a positioning clamp for abutting against the field effect tube; the workstation has first cell body, the first locating piece that the inner wall of first cell body was equipped with, first locating piece is located the below of circuit board, offer the card post that is used for the card to go into the through-hole of field effect transistor on the first locating piece. The utility model discloses can improve field effect transistor and circuit board welding efficiency and quality, belong to electrical components's technical field.

Description

Auxiliary device for welding field effect transistor and circuit board

Technical Field

The utility model relates to an electrical components's technical field especially relates to an auxiliary device that is used for field effect transistor and circuit board welding.

Background

The mos transistor is a metal-oxide-semiconductor (semiconductor) field effect transistor, which is referred to as a field effect transistor for short, and the field effect transistor is a unipolar semiconductor device for controlling the current magnitude by the electric field effect. The input end of the circuit basically does not take current or the current is extremely small, and the circuit has the characteristics of high input impedance, low noise, good thermal stability, simple manufacturing process and the like, and is applied to large-scale and ultra-large-scale integrated circuits. When the field effect transistor is used in a circuit, the field effect transistor needs to be welded on a circuit board through a soldering tin gun, because the field effect transistor is small in size, a manipulator is difficult to grab, and therefore in the prior art, when the field effect transistor is welded on the circuit board (PCB), the field effect transistor and the circuit board need to be manually and stably clamped by hands, a plurality of wires of the field effect transistor are respectively clamped into corresponding welding holes of the circuit board, and finally, the wires of the field effect transistor are welded on the circuit board through the soldering tin gun for soldering tin. But adopt artifical fixed field effect transistor and circuit board, appear rocking easily at the welded in-process, need constantly to adjust the position of field effect transistor and circuit board just can guarantee that a plurality of wires block respectively into the corresponding welding hole of circuit board, be difficult to guarantee the welded quality when leading to field effect transistor and circuit board welding efficiency very low.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists among the prior art, the utility model aims at: the utility model provides a be used for field effect transistor and circuit board welded auxiliary device, the utility model discloses can improve field effect transistor and circuit board welding efficiency and quality.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an auxiliary device for welding a field effect tube and a circuit board comprises a workbench, a clamp holder and a positioning clamp, wherein the workbench is used for placing the circuit board, the clamp holder is arranged on the workbench and used for clamping the circuit board, and the positioning clamp is used for abutting against the field effect tube; the workstation has first cell body, the first locating piece that the inner wall of first cell body was equipped with, first locating piece is located the below of circuit board, offer the card post that is used for the card to go into the through-hole of field effect transistor on the first locating piece.

Furthermore, a plurality of limiting blocks are arranged on the workbench; the limiting blocks are arranged at intervals and surround to form a clamping area for clamping the circuit board.

Furthermore, the auxiliary device for welding the field effect transistor and the circuit board also comprises a pre-assembled plate which is reversely buckled on the workbench; a through groove is formed in the pre-installed plate; a second positioning block matched with the first positioning block is arranged on the inner wall of the through groove, and a clamping groove for accommodating a field effect tube is formed in the second positioning block; and the edge of the through groove is provided with a bayonet for clamping the edge of the circuit board.

Further, the pre-installed plate is also provided with an avoidance groove; when the pre-assembled plate is reversely buckled on the workbench, the clamp holder is positioned in the avoiding groove.

Furthermore, the number of the avoiding grooves and the number of the clamping devices are respectively multiple, and the avoiding grooves correspond to the clamping devices one to one.

Furthermore, a positioning shaft is arranged on the workbench; and the pre-installed plate is provided with a positioning hole for the positioning shaft to pass through.

Further, the holder comprises a positioning rod arranged on the workbench, a limiting head arranged on the positioning rod, an abutting block and a first spring sleeved on the positioning rod; the butt joint block is provided with a sleeve hole, the butt joint block is sleeved on the positioning rod through the sleeve hole, the inner wall ring of the sleeve hole is provided with a limiting ring, and the first spring is located in the sleeve hole and clamped between the limiting head and the limiting ring.

Further, the positioning clip has a second spring for abutting against the field effect transistor.

Further, the workbench comprises a base plate and a base plate mounted on the base plate; the first groove body penetrates through the base plate and the base plate; the clamp is arranged on the base plate, and the positioning clamp is arranged on the base plate.

Further, the first positioning block is provided in plurality; a plurality of first positioning blocks are distributed at intervals; a plurality of clamping columns are respectively arranged on each first positioning block; a plurality of the clamping columns are distributed at intervals.

Compared with the prior art, the utility model, its beneficial effect lies in: the utility model discloses a setting up the location that the field effect transistor was realized to the card post, rethread holder centre gripping circuit board makes circuit board and field effect transistor relatively fixed for field effect transistor's wire just laminates in the corresponding position of circuit board, and the soldering tin rifle of being convenient for carries out the high-speed welding, thereby improves field effect transistor and circuit board welding efficiency and quality.

Drawings

FIG. 1 is a schematic structural view of an auxiliary device for soldering a field effect transistor and a circuit board, in which a part of a positioning clip is omitted;

FIG. 2 is an exploded view of an auxiliary device for field effect transistor and circuit board soldering;

FIG. 3 is an enlarged view at A of FIG. 2;

fig. 4 is an enlarged view at B of fig. 2;

fig. 5 is a schematic view of the structure of the pre-assembled plate.

In the figure, 1, a workbench; 2. a holder; 3. positioning clips; 4. pre-assembling a plate; 5. positioning the shaft; 6. a field effect transistor; 7. a circuit board; 11. a substrate; 12. a base plate; 13. a first tank body; 14. a first positioning block; 15. a limiting block; 16. clamping the column; 21. positioning a rod; 22. a limiting head; 23. a butting block; 24. a first spring; 31. a second spring; 41. a through groove; 42. a second positioning block; 43. a card slot; 44. a bayonet; 45. an avoidance groove; 46. and (6) positioning the holes.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information may also be referred to as "second" information, and similarly, the "second" information may also be referred to as "first" information, without departing from the scope of the invention.

For convenience of description, the up-down direction described below corresponds to the up-down direction of fig. 1 itself.

As shown in fig. 1 to 5, the present embodiment provides an auxiliary device for field effect transistor and circuit board soldering, which includes a table 1 for placing a circuit board 7, a clamper 2 mounted on the table 1 for clamping the circuit board 7, and a positioning clip 3 for abutting against a field effect transistor 6. The clamper 2 fixes the circuit board 7 on the table 1 to prevent the circuit board 7 from moving. First cell body 13 has been seted up to the upper surface of workstation 1, the first locating piece 14 that is equipped with in the first cell body 13, and circuit board 7 covers on first cell body 13 and is located the top of first locating piece 14 after circuit board 7 passes through holder 2 and fixes on workstation 1, and first locating piece 14 is located the below of circuit board 7. The fet 6 has a through-hole and a conductor for connection to the circuit board 7, the conductor being L-shaped. The first positioning block 14 is provided with a clamping column 16 for clamping the through hole of the field effect transistor 6. Before welding, the field effect transistor 6 is placed on the first positioning block 14 and is positioned through the clamping column 16, the movable end of the positioning clamp 3 is connected to the field effect transistor 6 in a low mode, so that the field effect transistor 6 is clamped between the first positioning block 14 and the movable end of the positioning clamp 3, the field effect transistor 6 is prevented from rotating, and the positioning of the field effect transistor 6 is achieved. The circuit board 7 covers on the first groove body 13, when the circuit board 7 passes through the upper part of the first positioning block 14 of the clamp holder 2, different leads of the field effect tube 6 are just clamped into different welding holes of the circuit board 7, and finally, the quick welding can be completed through welding robbery, so that the welding quality is ensured.

Specifically, in one embodiment, the positioning clip 3 is a quick clip, and the quick clip is an existing component, which is not described herein again. In addition, the quick clamp can be replaced by a telescopic device such as an air cylinder, and the field effect tube 6 can be prevented from rotating around the clamping column 16 through the fact that the telescopic end of the telescopic device abuts against the field effect tube 6.

Specifically, in one embodiment, the workbench 1 is provided with a plurality of limiting blocks 15; a plurality of limiting blocks 15 are arranged at intervals and enclose to form a clamping area for clamping the circuit board 7. The limiting blocks 15 are distributed along the edge of the first groove body 13 and clamp the circuit board 7 together, so that the circuit board 7 is positioned in the first groove body 13, and then the circuit board 7 is abutted against the workbench 1 through the clamp holder 2.

Specifically, in one embodiment, the auxiliary device for welding the field effect transistor and the circuit board further comprises a pre-assembly plate 4 for reversely buckling on the workbench 1; the pre-installed plate 4 is provided with a through groove 41; the through grooves 41 penetrate the upper and lower surfaces of the pre-installed plate 4. A second positioning block 42 adapted to the first positioning block 14 is disposed on the inner wall of the through groove 41, and when the pre-assembling plate 4 abuts against the workbench 1, the second positioning block 42 corresponds to the first positioning block 14 and is located right above the second positioning block 42. A clamping groove 43 for accommodating the field effect transistor 6 is formed in the second positioning block 42; the field effect transistor 6 can be clamped in the clamping groove 43 to position the field effect transistor 6. The edge of the through groove 41 is provided with a bayonet 44 for the edge of the circuit board 7 to be clamped into, and the edge of the circuit board 7 abuts against the bayonet 44 at the edge of the through groove 41, so that the circuit board 7 can be clamped on the pre-installed board 4.

The circuit board 7 and the field effect tube 6 can be pre-installed and fixed on the lower surface of the pre-installation plate 4, and the lower surfaces of the circuit board 7 and the field effect tube 6 are upward placed when the circuit board 7 and the field effect tube 6 are installed on the lower surfaces; then, the field effect transistor 6 can be clamped in the clamping groove 43, and the edge of the circuit board 7 is arranged in the clamping opening 44, so that the field effect transistor 6 and the circuit board 7 are positioned and installed on the pre-installed board 4 at the same time. Then, the pre-installed plate 4 is buckled on the workbench 1 in a reversed mode, the lower surface of the pre-installed plate 4 abuts against the workbench 1, the circuit board 7 is clamped through the clamp holder 2, and the field effect transistor 6 abuts against a first positioning block 14 in the workbench 1 through the positioning clamp 3. Then the pre-assembled plate 4 is taken away, the field effect tube 6 and the circuit board 7 are placed on the workbench 1, the relative positions of the field effect tube 6 and the circuit board 7 are kept fixed, and finally the workbench 1 is placed in a soldering tin furnace to realize automatic soldering. The preparation time before the pre-assembled plate 4 can promote the field effect transistor 6 and the circuit board 7 to be welded, a user can put the circuit board 7 of a required model and the field effect transistor 6 of the required model on the pre-assembled plate 4 in advance to perform preliminary positioning according to welding requirements, the pre-assembled plate 4 is directly buckled on the workbench 1 in an inverted mode when soldering tin is required, then the pre-assembled plate 4 is taken away, the workbench 1 is put into a soldering tin furnace to realize automatic soldering tin, and the soldering tin efficiency of the field effect transistor 6 and the circuit board 7 is greatly improved.

Specifically, in one embodiment, the pre-mounting plate 4 is further provided with an avoiding groove 45; when the pre-assembled plate 4 is reversely buckled on the workbench 1, the clamp holder 2 is positioned in the avoiding groove 45, and the avoiding groove 45 is convenient for taking down the pre-assembled plate 4 from the workbench 1.

Specifically, in one embodiment, the number of the avoiding grooves 45 and the number of the holders 2 are respectively multiple, so that the stability of holding the circuit board 7 is improved, and the avoiding grooves 45 and the holders 2 correspond to each other one by one.

Specifically, in one embodiment, the table 1 is provided with a positioning shaft 5; the pre-installed plate 4 is provided with a positioning hole 46 for the positioning shaft 5 to pass through. The pre-assembled plate 4 is positioned through the positioning shaft 5 when being buckled on the workbench 1 in an inverted mode, so that the field effect transistor 6 of the pre-assembled plate 4 can be accurately transferred to the first positioning block 14 on the workbench 1, and the welding hole of the circuit board 7 is quickly aligned with the lead of the field effect transistor 6 after the circuit board 7 is buckled on the workbench 1 in an inverted mode.

Specifically, in one embodiment, the clamper 2 comprises a positioning rod 21 mounted on the worktable 1, a limiting head 22 arranged on the positioning rod 21, an abutting block 23, and a first spring 24 sleeved on the positioning rod 21; the abutting block 23 is provided with a sleeve hole, the abutting block 23 is sleeved on the positioning rod 21 through the sleeve hole, the inner wall of the sleeve hole is annularly provided with a limiting ring, and the first spring 24 is positioned in the sleeve hole and clamped between the limiting head 22 and the limiting ring. The circuit board 7 is held between the abutment block 23 and the table 1 by the elastic force of the first spring 24.

In particular, in one embodiment, the positioning clip 3 has a second spring 31 for abutting on the field effect transistor 6. The movable end of the positioning clip 3 is provided with a second spring 31, and the second spring 31 abuts against the field effect transistor 6 to prevent the field effect transistor 6 from being damaged.

Specifically, in one embodiment, the table 1 includes a base plate 11 and a backing plate 12 mounted on the base plate 11; the first groove body 13 penetrates through the base plate 11 and the backing plate 12; the limiting block 15 and the clamper 2 are arranged on the backing plate 12, and the positioning clamp 3 is arranged on the substrate 11.

Specifically, in one embodiment, there are a plurality of first positioning blocks 14; the first positioning blocks 14 are distributed at intervals; a plurality of clamping columns 16 are respectively arranged on each first positioning block 14; a plurality of the jamming posts 16 are spaced apart. Realize that a plurality of field effect transistor 6 install simultaneously on circuit board 7, compare artifical an installation welding, this application can further improve field effect transistor 6's installation effectiveness.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an auxiliary device that is used for field effect transistor and circuit board to weld which characterized in that: the device comprises a workbench for placing a circuit board, a clamp holder arranged on the workbench and used for clamping the circuit board, and a positioning clamp used for abutting against a field effect tube; the workstation has first cell body, the first locating piece that the inner wall of first cell body was equipped with, first locating piece is located the below of circuit board, offer the card post that is used for the card to go into the through-hole of field effect transistor on the first locating piece.

2. An auxiliary device for soldering a fet to a circuit board according to claim 1, wherein: a plurality of limiting blocks are arranged on the workbench; the limiting blocks are arranged at intervals and surround to form a clamping area for clamping the circuit board.

3. An auxiliary device for soldering a fet to a circuit board according to claim 1, wherein: the device also comprises a pre-assembled plate used for reversely buckling on the workbench; a through groove is formed in the pre-installed plate; a second positioning block matched with the first positioning block is arranged on the inner wall of the through groove, and a clamping groove for accommodating a field effect tube is formed in the second positioning block; and the edge of the through groove is provided with a bayonet for clamping the edge of the circuit board.

4. The auxiliary device for field effect transistor and circuit board soldering of claim 3, wherein: the pre-installed plate is also provided with an avoidance groove; when the pre-assembled plate is reversely buckled on the workbench, the clamp holder is positioned in the avoidance groove.

5. The auxiliary device for field effect transistor and circuit board soldering of claim 4, wherein: the number of the avoiding grooves and the number of the clamping devices are respectively multiple, and the avoiding grooves correspond to the clamping devices one to one.

6. An auxiliary device for fet and circuit board soldering according to claim 3, wherein: a positioning shaft is arranged on the workbench; the pre-assembly plate is provided with a positioning hole for the positioning shaft to pass through.

7. An auxiliary device for soldering a fet to a circuit board according to claim 1, wherein: the holder comprises a positioning rod arranged on the workbench, a limiting head arranged on the positioning rod, an abutting block and a first spring sleeved on the positioning rod; the butt joint block is provided with a sleeve hole, the butt joint block is sleeved on the positioning rod through the sleeve hole, the inner wall of the sleeve hole is annularly provided with a limiting ring, and the first spring is located in the sleeve hole and clamped between the limiting head and the limiting ring.

8. An auxiliary device for soldering a fet to a circuit board according to claim 1, wherein: the locating clip is provided with a second spring used for abutting against the field effect transistor.

9. An auxiliary device for soldering a fet to a circuit board according to claim 1, wherein: the workbench comprises a base plate and a base plate arranged on the base plate; the first groove body penetrates through the base plate and the base plate; the clamp is arranged on the base plate, and the positioning clamp is arranged on the base plate.

10. An auxiliary device for fet and circuit board soldering according to claim 9, wherein: a plurality of first positioning blocks are provided; a plurality of first positioning blocks are distributed at intervals; a plurality of clamping columns are respectively arranged on each first positioning block; the clamping columns are distributed at intervals.