CN219555270U

CN219555270U - SMT special jig

Info

Publication number: CN219555270U
Application number: CN202320247430.8U
Authority: CN
Inventors: 朱波; 王杰; 付晋
Original assignee: Hefei Pengyuan Photoelectric Technology Co ltd
Current assignee: Anhui Manjiu Electronic Technology Co ltd
Priority date: 2023-02-18
Filing date: 2023-02-18
Publication date: 2023-08-18
Anticipated expiration: 2033-02-18

Abstract

The utility model relates to the technical field and discloses an SMT special jig, which comprises an SMT jig body, wherein a placing groove is formed in the SMT jig body, positioning columns are symmetrically and fixedly connected to one side of the inside of the placing groove, a pressing edge component is arranged on the SMT jig body and comprises a plurality of pressing plates, rubber pads are fixedly connected to the bottoms of the pressing plates, a plurality of mounting grooves are formed in the top of the SMT jig body, the mounting grooves are respectively formed in the left side, the right side and the rear side of the placing groove, a plurality of threaded holes are formed in the mounting grooves, adjusting bolts are movably connected to the two ends of the pressing plates, and heat dissipation grooves are symmetrically formed in the inside of the placing groove.

Description

SMT special jig

Technical Field

The utility model relates to the technical field of SMT jigs, in particular to a special jig for SMT.

Background

The SMT jig refers to an SMT furnace jig, and SMT refers to a series of process flows for processing on the basis of a PCB, which is a circuit mounting technology for mounting a pin-free or short-lead surface assembly component on the surface of a PCB or the surface of other substrates, and performing welding assembly by a reflow soldering or dip soldering method and the like. The SMT furnace jig is a jig for processing the PCB by utilizing SMT, and is widely applicable to various PCB with SMD components on the soldering tin surface of the plug-in component. At present, the SMT jig is used for processing the PCB usually under a high-temperature environment, and the edge of the PCB is heated and tilted under the high-temperature environment for a long time, so that the conditions of empty welding of elements, tombstoning, deformation and damage of the PCB and the like can be caused when the PCB is processed subsequently, and the yield of the PCB processing is seriously affected.

Disclosure of Invention

In order to solve the problems, the utility model provides a special fixture for SMT.

The utility model provides an SMT special jig which adopts the following technical scheme:

the utility model provides a special tool of SMT, includes the SMT tool body, the inside standing groove that is equipped with of SMT tool body, the inside one side symmetry fixedly connected with reference column of standing groove, be equipped with the blank pressing subassembly on the SMT tool body, the blank pressing subassembly includes a plurality of clamp plates, and is a plurality of equal fixedly connected with rubber pad in clamp plate bottom, a plurality of mounting grooves have been seted up at SMT tool body top, and is a plurality of the mounting groove is inside all to have seted up a plurality of screw holes, and is a plurality of the equal swing joint in clamp plate both ends has adjusting bolt, the inboard symmetry of standing groove is equipped with the radiating groove, a plurality of fresh air inlets have all been seted up on SMT tool body both sides surface.

Preferably, the mounting grooves are respectively formed in the left side, the right side and the rear side of the placing groove, and the adjusting bolts fix the pressing plate in the mounting grooves.

Preferably, the air inlet ends of the two sides are respectively extended into the heat dissipation grooves at the two sides, and the tops of the heat dissipation grooves at the two sides are fixedly connected with metal nets.

Preferably, the PCB is placed in the placing groove, and is fixed in the placing groove through a plurality of pressing plates.

In summary, the utility model has the following beneficial technical effects:

1. through designing the blank pressing subassembly, when using SMT special fixture to process the PCB board, insert the standing groove inboard with the PCB board from standing groove one end for the reference column inserts in the through-hole on the PCB board, confirm the position of PCB board, place the PCB board inside the SMT tool body, through placing a plurality of clamp plates respectively inside a plurality of mounting grooves, through rotating adjusting bolt and again cooperate a plurality of screw holes with the clamp plate fixed in the mounting groove, the PCB board is fixed in the standing groove inside through a plurality of clamp plates this moment, push down the PCB board edge through the clamp plate, the edge perk when avoiding PCB board processing to be heated, thereby protect the PCB board, the element blank welding appears when preventing PCB processing, the condition such as tombstone and PCB board deformation damage, improve the yield of PCB board processing;

2. through design heat dissipation groove and fresh air inlet, behind PCB board processing, dispel the heat to the PCB board bottom after the processing through the heat dissipation groove, outside air gets into both sides heat dissipation inslot portion through a plurality of fresh air inlet, through the circulation of inside and outside air for place in the inside PCB board rapid cooling of standing groove, thereby accelerate the cooling efficiency of PCB board.

Drawings

Fig. 1 is a schematic diagram of an overall structure of an SMT dedicated jig according to an embodiment of the application.

Fig. 2 is a schematic diagram of a structure of a blank holder assembly of an SMT dedicated jig according to an embodiment of the application.

Fig. 3 is a schematic diagram of an internal structure of an SMT dedicated jig according to an embodiment of the application.

Reference numerals illustrate: 1. an SMT fixture body; 2. a placement groove; 3. positioning columns; 4. a blank pressing assembly; 5. a pressing plate; 6. a mounting groove; 7. an adjusting bolt; 8. a heat sink; 9. a metal mesh; 10. an air inlet hole; 11. a rubber pad; 12. and (3) a threaded hole.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a special jig for SMT, which is used for fixing a PCB board and facilitating subsequent welding of an electric element on the PCB. Referring to fig. 1, the Surface Mount Technology (SMT) fixture comprises an SMT fixture body 1, wherein the SMT fixture body 1 is a furnace passing fixture for PCB processing, a placing groove 2 is formed in the SMT fixture body 1, a PCB is placed in the placing groove 2, the PCB is inserted into the inside of the placing groove 2 from one end of the placing groove 2, a positioning column 3 is symmetrically and fixedly connected to one side of the inside of the placing groove 2, the positioning column 3 is made of metal, the positioning column 3 is inserted into a through hole on the PCB to determine the position of the PCB, so that the PCB is convenient to fix and process subsequently, a blank pressing assembly 4 is arranged on the SMT fixture body 1, the edge of the PCB is pressed by the blank pressing assembly 4, and the edge warping during subsequent PCB processing and heating is avoided, and the processing of the PCB is affected;

insert the standing groove 2 inboard with the PCB board from standing groove 2 one end for in the through-hole on the locating column 3 inserts the PCB board, confirm the position of PCB board, place the PCB board inside SMT tool body 1, push down PCB board edge through pressing limit subassembly 4, avoid follow-up PCB board processing to be heated the edge perk, make things convenient for follow-up processing to the PCB board.

Referring to fig. 2-3, the edge pressing assembly 4 includes a plurality of pressing plates 5, the pressing plates 5 are made of metal, edges of the PCB are prevented from being warped when the PCB is heated by pressing the pressing plates 5, rubber pads 11 are fixedly connected to bottoms of the plurality of pressing plates 5, the pressing plates 11 are used for protecting the PCB from being damaged due to overlarge pressure when the pressing plates 5 are pressed when the PCB is placed, the PCB is fixed inside the placing groove 2 by the plurality of pressing plates 5, a plurality of mounting grooves 6 are formed in the top of the SMT jig body 1, the mounting of the pressing plates 5 is facilitated by the plurality of mounting grooves 6, the plurality of mounting grooves 6 are respectively formed on left and right sides and the rear side of the placing groove 2, the plurality of pressing plates 5 are fixed on the left and right sides and the rear side of the placing groove 2, the plurality of pressing plates 5 are used for pressing the edges of the PCB, a plurality of threaded holes 12 are formed in the plurality of mounting grooves 6, the clamping plates 5 are conveniently fixed inside the mounting grooves 6 through the adjusting bolts 7 by the aid of the threaded holes 12, the adjusting bolts 7 are movably connected to two ends of the clamping plates 5, the fixing plates 5 are conveniently fixed to the PCB, the heat dissipation grooves 8 are symmetrically formed in the inner sides of the placing grooves 2, heat dissipation is conveniently carried out on the bottoms of the processed PCB through the heat dissipation grooves 8, the air inlet holes 10 are formed in the surfaces of two sides of the SMT jig body 1, external air enters the inside of the heat dissipation grooves 8 at two sides through the air inlet holes 10, the tail ends of the air inlet holes 10 at two sides respectively extend into the inside of the heat dissipation grooves 8 at two sides, the inside of the heat dissipation grooves 8 at two sides are communicated with each other to facilitate air circulation, metal nets 9 are fixedly connected to the tops of the heat dissipation grooves 8 at two sides, and blockage caused by foreign matters falling into the inside of the heat dissipation grooves 8 is avoided through the metal nets 9;

through placing a plurality of clamp plates 5 respectively inside a plurality of mounting grooves 6, cooperate a plurality of screw holes 12 again through rotatory adjusting bolt 7 and fix clamp plate 5 in mounting groove 6, the PCB board is fixed inside standing groove 2 through a plurality of clamp plates 5 this moment, push down the PCB board edge through clamp plate 5, avoid the PCB board processing to be heated the edge perk, and place the too big pressure when clamp plate 5 compresses tightly through rubber pad 11 and lead to its damage, be convenient for dispel the heat to the PCB board bottom after the processing through cooling groove 8, outside air gets into inside the cooling groove 8 of both sides through a plurality of fresh air inlet 10, the cooling efficiency of PCB board is accelerated through the circulation of inside and outside air.

The implementation principle of the special jig for SMT provided by the embodiment of the utility model is as follows: when the SMT jig is used, a PCB is inserted into the inner side of the placement groove 2 from one end of the placement groove 2, the positioning column 3 is inserted into a through hole on the PCB, the position of the PCB is determined to place the PCB inside the SMT jig body 1, the plurality of pressing plates 5 are respectively placed inside the plurality of mounting grooves 6, the pressing plates 5 are fixed inside the mounting grooves 6 through the rotating adjusting bolts 7 and the plurality of threaded holes 12, at the moment, the PCB is fixed inside the placement groove 2 through the plurality of pressing plates 5, the edge of the PCB is pressed through the pressing plates 5, edge warping during PCB processing and heating is avoided, and damage is caused by overlarge pressure during the pressing of the placement pressing plates 5 of the PCB is protected through the rubber pad 11; the bottom of the processed PCB is conveniently radiated through the radiating grooves 8, external air enters the inside of the radiating grooves 8 on two sides through the air inlet holes 10, and the cooling efficiency of the PCB is quickened through the circulation of internal and external air.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. The utility model provides a special tool of SMT, includes SMT tool body (1), its characterized in that: the utility model discloses a SMT tool, including SMT tool body (1), inside standing groove (2) that is equipped with of SMT tool body (1), inside one side symmetry fixedly connected with reference column (3), be equipped with blank holder subassembly (4) on SMT tool body (1), blank holder subassembly (4) are including a plurality of clamp plates (5), a plurality of clamp plates (5) equal fixedly connected with rubber pad (11) in bottom, a plurality of mounting grooves (6) have been seted up at SMT tool body (1) top, and a plurality of screw holes (12) have all been seted up to mounting groove (6) inside, a plurality of clamp plates (5) both ends equal swing joint has adjusting bolt (7), the inboard symmetry of standing groove (2) is equipped with radiating groove (8), a plurality of inlet air holes (10) have all been seted up on SMT tool body (1) both sides surface.

2. The SMT specific jig according to claim 1, wherein: the mounting grooves (6) are respectively arranged on the left side, the right side and the rear side of the placing groove (2), and the pressure plate (5) is fixed inside the mounting grooves (6) by the adjusting bolts (7).

3. The SMT specific jig according to claim 1, wherein: the tail ends of the air inlet holes (10) at two sides extend into the heat dissipation grooves (8) at two sides respectively, and metal nets (9) are fixedly connected to the tops of the heat dissipation grooves (8) at two sides.

4. The SMT specific jig according to claim 1, wherein: the PCB is placed inside the placing groove (2), and is fixed inside the placing groove (2) through a plurality of pressing plates (5).