CN112916973B

CN112916973B - PCB welding and fixing tool

Info

Publication number: CN112916973B
Application number: CN202110131887.8A
Authority: CN
Inventors: 黄小双
Original assignee: Shenzhen Jiechuang Electronic Technology Co ltd
Current assignee: Shenzhen Jiechuang Electronic Technology Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2022-06-03
Anticipated expiration: 2041-01-30
Also published as: CN112916973A

Abstract

The utility model relates to a PCB board welded fastening frock belongs to PCB board welding technique's field, and it includes underframe, lift holder and panel, is equipped with the holder that is used for the clamping PCB board on the underframe, and the lift holder sets up perpendicularly on the underframe, and the panel articulates the one end of keeping away from the underframe at the lift holder, is equipped with a plurality of elastic expansion posts on the panel, and the panel bottom surface is equipped with and is used for the mounting fixed mutually with the underframe. This application has the effect that makes things convenient for PCB board welding.

Description

PCB welding and fixing tool

Technical Field

The application relates to the field of PCB welding technology, in particular to a PCB welding and fixing tool.

Background

In the industrial production of electronic products, it is often necessary to weld a plurality of electronic components on a Printed Circuit Board (PCB), and the conventional method is to manufacture a complete circuit line by etching and the like on a circuit board substrate, and simultaneously reserve welding holes arranged in a matrix structure on the circuit board substrate in advance, insert pins of the electronic components from the welding holes and extend out of the reverse side of the circuit board by a certain length, then turn over the circuit board substrate so that the reverse side faces upward, and spot-weld each pin one by using a welding gun and the like, thereby fixing each electronic component on the circuit board substrate.

When the electronic component is turned over, all the electronic components are only inserted into the welding holes and can fall off easily, and particularly, the electronic components are not uniform in size and are difficult to press by fingers of operators.

In view of the above-mentioned related technologies, the inventor believes that in the actual welding process, after the circuit board is turned over, the pins of each electronic component are only inserted into the welding holes, so that the pins are easy to loosen and fall off, and the welding is inconvenient.

Disclosure of Invention

In order to improve the inconvenient problem of PCB board welding, this application provides a PCB board welded fastening frock.

The application provides a PCB board welded fastening frock adopts following technical scheme:

the utility model provides a PCB board welded fastening frock, includes underframe, lift holder and panel, be equipped with the holder that is used for the clamping PCB board on the underframe, the lift holder sets up on the underframe perpendicularly, the panel articulates the one end of keeping away from the underframe at the lift holder, be equipped with a plurality of elastic expansion posts on the panel, the panel bottom surface is equipped with and is used for the mounting fixed mutually with the underframe.

Through adopting above-mentioned technical scheme, the operator utilizes the holder earlier to fix the PCB board in the underframe, pass each electronic components's stitch from the welding hole that corresponds again, it is fixed to rotate the panel lid on the lift holder, the panel that moves down makes the flexible post contradict with the electronic components on the PCB board, the flexible post that corresponds with electronic components is supported and takes place the rebound, this part flexible post produces a reverse elastic thrust at this in-process, force electronic components and PCB board to support tightly, the operator is fixed panel and underframe through the mounting, upset underframe and erect, make PCB board bottom surface up, the operator alright weld this moment, because electronic components and PCB board support tightly, the possibility that electric components become flexible and drop has been reduced, the welding operation of PCB board has been made things convenient for, also do benefit to simultaneously and improve welding efficiency.

Optionally, the holder includes splint and otic placode, splint are located the underframe and are parallel with the inside side of underframe, the otic placode is fixed at the both ends of splint and is contradicted, two with the underframe bottom surface all be equipped with the screw on the otic placode, set up the spout that supplies two screws to pass on the underframe, two the equal threaded connection of one end that the screw passed the spout has first knob.

Through adopting above-mentioned technical scheme, the operator puts the PCB board between splint and underframe inside wall, and movable clamp plate supports tightly the PCB board, and it can to twist again and move first knob with splint fixed, and is simple and convenient, can fix a plurality of PCB boards simultaneously, further improves welding efficiency.

Optionally, clamping grooves are formed in the two sides of the clamping plate along the length direction, and sinking grooves are formed in the inner side wall of the bottom frame.

By adopting the technical scheme, the end parts of the PCB are lapped in the clamping groove and the sinking groove, so that the possibility of deflection of the PCB is reduced, and the clamping of the PCB is stabilized.

Optionally, a supporting plate parallel to the clamping plate is arranged in the bottom frame, a plurality of protruding points arranged at intervals are arranged on the supporting plate, studs are arranged at two ends of the supporting plate, and one end, which penetrates through the sliding groove upwards, of each stud is connected with a second knob in a threaded manner.

By adopting the technical scheme, when the PCB is long, the PCB can be supported on the supporting plate to play a role in stabilizing the base frame, the PCB is spaced from the supporting plate by the salient points on the supporting plate, and the interference of the supporting plate by high-low uneven contacts on the PCB is reduced, so that the PCB is placed unstably; the position of the supporting plate can be freely adjusted, and the flexibility is high.

Optionally, the lifting holder includes a slide bar and support plates, the slide bar is vertically disposed at two ends of the bottom frame, the support plates are in one-to-one correspondence with the slide bar and penetrate through the slide bar, the panel is hinged to the two support plates, the support plates are rotatably connected with first shifting blocks, positioning blocks are disposed at top ends of the slide bar, and when the support plates are abutted against the positioning blocks, bottom surfaces of the first shifting blocks are flush with upper end surfaces of the positioning blocks.

By adopting the technical scheme, the panel moves up and down along with the support plate, when the PCB is clamped, an operator moves up the support plate, and then the first shifting block is rotated to abut against the upper end face of the positioning block to fix the support plate.

Optionally, the support plate is rotatably connected with a second shifting block, and when the panel covers the support plate, the bottom surface of the second shifting block is flush with the upper surface of the panel.

Through adopting above-mentioned technical scheme, the operator rotates the second shifting block and supports panel upper surface alright with panel and extension board fixed mutually, has guaranteed that the elastic expansion post compresses tightly electronic components.

Optionally, the elastic telescopic column includes a guide pillar, an end cap, a pressing cap and a first spring, through holes arranged along a matrix are formed in the panel, the guide pillar and the through holes correspond to each other one by one and penetrate through the through holes, the end cap is connected to one end of the guide pillar, the pressing cap is connected to the other end of the guide pillar, the first spring is sleeved on the guide pillar, and two ends of the first spring are respectively abutted against the pressing cap and the bottom surface of the panel.

By adopting the technical scheme, when the pressing cap is abutted against the electronic component, the guide post moves backwards along the through hole, the first spring is compressed to generate elastic deformation, and the pressing cap is abutted against the electronic component under the elastic thrust of the first spring; the elastic telescopic columns are arranged according to a matrix, so that the pressing of each electronic component is guaranteed, and omission is reduced.

Optionally, the mounting includes support and limiting plate, the support sets up at the panel bottom surface perpendicularly, the limiting plate articulates on the support lateral wall, be connected with the second spring between limiting plate one end and support, the other end extends the support and outer and be equipped with the awl piece, the fixed slot that supplies the awl piece embedding is seted up to the underframe lateral wall, be equipped with the direction opening with the fixed slot intercommunication on the underframe.

Through adopting above-mentioned technical scheme, when the panel is close to the underframe, the awl piece is contradicted with the direction opening, and the awl piece is outwards promoted to drive the limiting plate and outwards rotate, make the second spring compressed and produce elastic deformation, when the awl piece removed to the fixed slot position, the second spring promoted the limiting plate gyration, and then drives the awl piece and inserts in the fixed slot, make underframe and panel fixed mutually, convenient and fast has reduced the not hard up possibility of electronic components.

Optionally, still include base plate and base, the base is equipped with two and vertical fixation on the base plate, the underframe rotates to be connected in two bases, be equipped with on the base and be used for restricting underframe pivoted restriction piece.

Through adopting above-mentioned technical scheme, the base makes and has the determining deviation between underframe and base plate, and the operator directly overturns the underframe after the PCB board clamping is pressed, and it is fixed with the underframe to recycle the restriction piece, and the space has been reserved for the flexible post that moves back to the base plate top, and the operator can directly carry out the welding operation, need not the manual panel that erects, does benefit to and prepares the step before simplifying the welding.

Optionally, the restriction piece includes reference column and third spring, the shaft hole has been seted up to the base lateral wall, the constant head tank that extends to the base plate is seted up to the shaft hole inner wall, the reference column is pegged graft in the constant head tank, the one end and the reference column of third spring are connected, and the other end is connected with the constant head tank bottom, the both ends of underframe all are equipped with rotates the seat, two it all is connected with the column shaft to rotate the seat tip, the column shaft is pegged graft in the shaft hole, and male one end is equipped with two symmetric distribution's location plane, works as when the reference column contradicts with the location plane, the underframe parallels with the backing plate.

By adopting the technical scheme, the positioning column is not in surface contact with the positioning plane, and the positioning column is limited to rotate by the elastic force of the third spring; when the bottom frame needs to be turned over, an operator applies force to rotate the bottom frame, the positioning plane extrudes the positioning column, the positioning column is forced to compress the third spring and enter the positioning groove, and the positioning column is abutted against the circumferential surface of the column shaft at the moment, so that the bottom frame is convenient to rotate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pressing of electronic components on the PCB is realized, and convenience is provided for welding operation; the elastic telescopic columns are arranged according to a matrix, so that the pressing of each electronic component is guaranteed, and omission is reduced;

2. the bottom frame can simultaneously clamp a plurality of PCB boards, so that the welding efficiency is improved; the panel is fixed mutually with the extension board, and the underframe is fixed mutually with the panel, has guaranteed that the flexible post compresses tightly electronic components, has reduced the not hard up possibility of electronic components.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying the limiting member in the embodiment of the present application.

Fig. 3 is an enlarged view of a in fig. 2.

Fig. 4 is a schematic structural diagram for embodying the lifting cage according to the embodiment of the present application.

Fig. 5 is a schematic structural diagram for embodying a pallet according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram for embodying an elastic telescopic column in the embodiment of the present application.

Fig. 7 is a schematic structural diagram for embodying a limiting plate and a conical block in the embodiment of the present application.

Description of reference numerals: 1. a bottom frame; 11. sinking a groove; 12. a substrate; 13. a base; 2. a clamping member; 21. a splint; 211. an ear plate; 212. a card slot; 22. a screw; 221. a first knob; 23. a chute; 24. a support plate; 241. salient points; 25. a stud; 251. a second knob; 3. a lifting retainer; 31. a slide bar; 311. positioning blocks; 32. a support plate; 321. a first shifting block; 322. a second shifting block; 33. a base plate; 34. a positioning sleeve; 4. a panel; 5. an elastic telescopic column; 51. a guide post; 511. a first spring; 52. an end cap; 53. pressing the cap; 54. a through hole; 6. a fixing member; 61. a support; 62. a limiting plate; 621. a conical block; 622. a second spring; 63. fixing grooves; 64. a guide gap; 7. a limiting member; 71. a positioning column; 72. a third spring; 73. a shaft hole; 731. positioning a groove; 74. a rotating seat; 75. a column shaft; 751. and positioning a plane.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses PCB board welded fastening frock. As shown in fig. 1 and 2, the PCB welding and fixing tool comprises a substrate 12, a bottom frame 1, a lifting holder 3 and a panel 4 which are sequentially distributed from bottom to top, wherein two ends of the substrate 12 along the length direction are both vertically provided with a base 13, the bottom frame 1 is a rectangular square frame, the bottom frame 1 is rotatably connected between the two bases 13, the base 13 is provided with a limiting piece 7 for limiting the rotation of the bottom frame 1, in the initial position, the bottom frame 1 is parallel to the substrate 12 and has a distance therebetween, and the bottom frame 1 is provided with a clamping piece 2 for clamping a PCB; lifting holder 3 vertical fixation is on underframe 1, and panel 4 articulates in lifting holder 3 and keeps away from the one end of underframe 1, and is equipped with a plurality of elastic telescopic column 5 on the panel 4, and each elastic telescopic column 5 all

passes panel

4, and 4 bottom surfaces of panel are equipped with and are used for the mounting 6 fixed mutually with underframe 1, mounting 6 and panel 4's each side one-to-one.

During operation, the operator will insert electronic components's PCB board clamping in underframe 1 earlier, rotates panel 4 lid again and fixes on lift supports, moves down lift holder 3, drives the flexible post 5 and supports tight on the PCB board with electronic components, and mounting 6 pins panel 4 and underframe 1 this moment, and operator upset underframe 1180 makes the PCB board up, alright weld.

Referring to fig. 2 and 3, the limiting member 7 includes a positioning column 71 and a third spring 72, wherein the side walls of the two bases 13 are vertically provided with shaft holes 73, the inner wall of the shaft hole 73 is provided with a positioning groove 731 extending downward along the height direction of the base 13, the positioning column 71 and the third spring 72 are located in the positioning groove 731, one end of the third spring 72 is connected to the bottom of the positioning groove 731, the other end of the third spring is connected to the positioning column 71, and when the third spring 72 is in a natural state, a part of the positioning column 71 extends out of the opening of the positioning groove 731.

As shown in fig. 2 and 3, the two ends of the bottom frame 1 are provided with rotating seats 74, the rotating seats 74 are L-shaped and correspond to the bases 13 one by one, one end of the rotating seat 74 far away from the bottom frame 1 is in threaded connection with a column shaft 75, the column shaft 75 is inserted into the shaft hole 73, and the inserted end is provided with two positioning planes 751 which are symmetrically distributed about the axis, when the end surface of the positioning column 71 is abutted against the positioning planes 751, the third spring 72 is in a compressed state, the surface contact between the positioning column 71 and the positioning planes 751 limits the rotation of the bottom frame 1, at this time, the bottom frame 1 is parallel to the backing plate 33, and the two positioning planes 751 correspond to the bottom frame 1 at 0 ° and 180 ° positions respectively; when the bottom frame 1 needs to be rotated, an operator only needs to apply force to the bottom frame 1 to force the column shaft 75 to press the end of the positioning column 71 to move into the positioning groove 731, and the operation is simple and convenient.

As shown in fig. 3 and 4, the clamping member 2 includes a clamping plate 21, the clamping plate 21 is inserted into the bottom frame 1 and is parallel to the side wall of the long edge inside the bottom frame 1, the two ends of the clamping plate 21 are both provided with ear plates 211, the ear plates 211 and the clamping plate 21 are integrally formed, the two ear plates 211 are both supported on the bottom surface of the bottom frame 1, the two ear plates 211 are both provided with screws 22 perpendicularly, the bottom frame 1 is provided with sliding grooves 23 on the two sides perpendicular to the length direction of the bottom frame 1, the sliding grooves 23 extend along the width direction of the bottom frame 1, the sliding grooves 23 correspond to the screws 22 one to one, and the ends of the screws 22 are connected with first knobs 221 through the sliding grooves 23 and then through threads.

As shown in fig. 3 and 4, the clamping groove 212 has all been seted up in splint 21 up end in the both sides along its length direction, the heavy groove 11 that extends along its frame profile is seted up to underframe 1 inside wall, draw-in groove 212 tank bottom and heavy groove 11 tank bottom flush and both the groove depth is not all less than PCB board thickness, the PCB board clamp is between splint 21 and underframe 1 inside wall, and the one end of PCB board is taken in draw-in groove 212, the other end is taken in heavy groove 11, make the PCB board keep the level, the operator can remove splint 21 according to the length of PCB board and press from both sides tight PCB board, twist first knob 221 again and underframe 1 and support tightly, fix splint 21, the flexibility is high.

As shown in fig. 4 and 5, a support plate 24 is arranged in the bottom frame 1, the support plate 24 is parallel to the clamping plate 21, two ends of the support plate 24 protrude and extend to the lower side of the corresponding sliding grooves 23, two extending ends of the support plate 24 are vertically provided with studs 25, the studs 25 upwardly penetrate through the sliding grooves 23, one penetrating end is in threaded connection with a second knob 251, a plurality of salient points 241 which are arranged at intervals along the length direction of the support plate 24 are arranged on the support plate 24, and the top ends of the salient points 241 are flush with the bottom of the clamping groove 212.

As shown in fig. 4, the lifting holder 3 includes two sets of slide bars 31 vertically disposed on the bottom frame 1, the two sets of slide bars 31 are respectively located at two ends of the bottom frame 1 along the length direction, the number of each set of slide bars 31 is two and corresponds to two ends of the wide side of the bottom frame 1, a backing plate 33 is disposed at the lower end of each slide bar 31, the backing plate 33 is fixed on the bottom frame 1 by bolts, and the two sets of slide bars 31 are located at the outer side of the bottom frame 1; each group of sliding rods 31 is provided with a support plate 32 in a penetrating way, and the two support plates 32 are parallel to each other and move up and down along the height direction of the sliding rods 31. Each slide bar 31 is sleeved with a positioning sleeve 34, and the positioning sleeve 34 is fixed on the bottom surface of the support plate 32.

As shown in fig. 4, the top end of each sliding rod 31 is connected with a positioning block 311 through a screw thread, the bottom frame 1 is located below the positioning block 311, one end of one of the support plates 32 away from the hinge point and one end of the other support plate 32 close to the hinge point are both connected with a first shifting block 321 through rotation, and when the support plate 32 abuts against the positioning block 311, the bottom surface of the first shifting block 321 is flush with the upper end surface of the positioning block 311.

As shown in fig. 1 and 4, the panel 4 is hinged to the same end of the two support plates 32, one end of each support plate 32, which is far away from the hinged point, is rotatably connected with a second shifting block 322, when the panel 4 covers the support plate 32, the panel 4 is parallel to the bottom frame 1, the bottom surface of the second shifting block 322 is flush with the upper surface of the panel 4, and the positioning block 311 is located outside the panel 4. When a PCB is clamped, an operator moves the support plate 32 upwards to enable a space between the support plate 32 and the bottom frame 1 to be reserved, the first shifting block 321 is rotated to abut against the positioning block 311 to fix the support plate 32, the panel 4 is rotated to cover the support plate 32 after clamping is finished, and the second shifting block 322 is rotated to abut against the panel 4 to enable the panel 4 and the support plate 32 to be fixed, so that the PCB is simple and convenient.

During actual design, the first shifting block 321, the second shifting block 322 and the positioning block 311 are made of rubber or plastic materials, a certain elastic allowance is provided, meanwhile, the bottom surface of the first shifting block 321 can be lower than the upper end surface of the positioning block 311 by about 0.1mm, and the second shifting block 322 is lower than the upper end surface of the panel 4 by about 0.1mm, so that the first shifting block 321 and the second shifting block 322 are tightly abutted to respective objects, and the possibility of looseness is reduced.

As shown in fig. 6, the elastic telescopic column 5 includes a guide post 51, an end cap 52 and a pressing cap 53, a plurality of through holes 54 arranged in a matrix are vertically formed on the panel 4, the guide post 51 corresponds to the through holes 54 one by one and passes through the through holes 54, two ends of the guide post 51 are distributed on two sides of the panel 4, the end cap 52 is connected to one end of the guide post 51 located on the panel 4 facing upward in a threaded manner, the pressing cap 53 is connected to the other end of the guide post 51 in a threaded manner, and the end of the pressing cap 53 is tapered; each positioning post 71 is sleeved with a first spring 511, the first spring 511 is located between the panel 4 and the pressing cap 53, one end of the first spring 511 abuts against the panel 4, the other end of the first spring 511 abuts against the pressing cap 53, when the first spring 511 is in a natural state, the end cap 52 abuts against the panel 4, and when the panel 4 is parallel to the bottom frame 1, the falling point of each pressing cap 53 in a direction perpendicular to the bottom frame 1 is located in the inner area of the bottom frame 1.

As fig. 5 and 7, mounting 6 is including setting up the support 61 in the panel 4 bottom surface perpendicularly, support 61 is articulated to have a limiting plate 62 in one side outwards, the one end of limiting plate 62 is passed through second spring 622 and is connected with support 61, the other end extends outside support 61 along deviating from panel 4 direction, and the one end that stretches out is equipped with awl piece 621, awl piece 621 is located one side of limiting plate 62 towards panel 4 center perpendicular line, underframe 1 is equipped with direction opening 64 in border position, the bottom surface slope downwardly extending of direction opening 64, underframe 1 lateral wall is equipped with the fixed slot 63 with awl piece 621 outline looks adaptation, fixed slot 63 is located direction opening 64 below and both are linked together, when panel 4 parallels with underframe 1, awl piece 621 is just right with direction opening 64.

In the descending process of the panel 4, the conical block 621 is inserted into the guide notch 64 to abut against the guide notch and obliquely and downwards moves along the bottom surface of the guide notch 64, so that the end of the limit plate 62 is driven to rotate towards the direction away from the bottom frame 1, at the moment, the third spring 72 is extruded by the other end of the limit plate 62 to generate elastic deformation, when the conical block 621 moves to be opposite to the fixed groove 63, the second spring 622 pushes the limit plate 62 to rotate under the action of elastic force, the conical block 621 is driven to be inserted into the fixed groove 63, and the bottom frame 1 and the panel 4 are fixed; when the panel 4 needs to be separated, an operator pulls the support plate 32 upwards, and the conical block 621 is extruded by the groove wall of the fixing groove 63 to be subjected to a force deviating from the direction of the bottom frame 1, so that the limiting plate 62 rotates to drive the conical block 621 to move out of the fixing groove 63, and the panel separation device is simple and convenient.

The implementation principle of the embodiment of the application is as follows: an operator moves the support plate 32 upwards to abut against the positioning block 311, rotates the first shifting block 321 to fix the support plate 32, moves the clamping plate 21 to clamp the PCB, and screws the first knob 221 to fix the clamping plate 21 after clamping; downwards rotating the panel 4 to cover the support plate 32, rotating the second shifting block 322 to fix the panel 4, then rotating the first shifting block 321 to separate from the positioning block 311, downwards moving the panel 4 to drive the pressing cap 53 to abut against the electronic component on the PCB, downwards pressing the panel 4, blocking the pressing cap 53 corresponding to the electronic component and then moving to press the first spring 511, so that the guide post 51 drives the end cap 52 to move upwards, meanwhile, the first spring 511 is compressed to generate elastic deformation, applying a reverse thrust to the pressing cap 53 to enable the pressing cap 53 to abut against the electronic component on the PCB, stopping pressing when the positioning sleeve 34 abuts against the base plate 33, and at the moment, the limiting plate 62 drives the conical block 621 to insert into the fixing groove 63; the upset underframe 180 for PCB board bottom surface is upwards, welds electronic components's pin, because electronic components is supported tightly on the PCB board, and panel 4 is fixed mutually with extension board 32 simultaneously, and panel 4 is fixed mutually with underframe 1, has guaranteed to press cap 53 to electronic components's compressing tightly, has reduced the not hard up possibility of electronic components, provides convenience for operator's welding operation.

After the welding, gyration underframe 1 resets, and the operator pulls up extension board 32 for limiting plate 62 drives awl piece 621 and fixed slot 63 separation, and it contradicts and fixes with locating piece 311 to shift up extension board 32, rotates second shifting block 322 and panel 4 separation, goes up panel 4, unscrews first knob 221 and takes off the PCB board, the clamping again.

When a plurality of PCBs need to be clamped, the PCBs are arranged one by one along the length of the clamping plate 21; when the PCB is long, the operator places the PCB on the supporting plate 24 and uses the protrusions 241 on the supporting plate 24 to abut against the PCB, so as to support the PCB, thereby preventing the PCB from bending and deforming under the abutting force of the pressing cap 53, and on the other hand, the operator can move the supporting plate 24 to avoid the contacts on the PCB by using the protrusions 241, thereby keeping the PCB stable.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a PCB board welded fastening frock which characterized in that: the PCB clamping device comprises a bottom frame (1), a lifting retainer (3) and a panel (4), wherein a clamping piece (2) used for clamping a PCB is arranged on the bottom frame (1), the lifting retainer (3) is vertically arranged on the bottom frame (1), the panel (4) is hinged to one end, far away from the bottom frame (1), of the lifting retainer (3), a plurality of elastic telescopic columns (5) are arranged on the panel (4), and a fixing piece (6) used for being fixed with the bottom frame (1) is arranged on the bottom surface of the panel (4);

the lifting retainer (3) comprises a sliding rod (31) and support plates (32), the sliding rod (31) is vertically arranged at two ends of the bottom frame (1), the support plates (32) correspond to the sliding rod (31) one by one, the support plates (32) penetrate through the sliding rod (31), the panel (4) is hinged to the two support plates (32), the support plates (32) are rotatably connected with first shifting blocks (321), the top ends of the sliding rods (31) are provided with positioning blocks (311), and when the support plates (32) are abutted against the positioning blocks (311), the bottom surfaces of the first shifting blocks (321) are flush with the upper end surfaces of the positioning blocks (311);

a second shifting block (322) is rotatably connected to the support plate (32), and when the panel (4) covers the support plate (32), the bottom surface of the second shifting block (322) is flush with the upper surface of the panel (4);

the elastic telescopic column (5) comprises a guide column (51), an end cap (52), a pressing cap (53) and a first spring (511), through holes (54) which are arranged along a matrix are formed in the panel (4), the guide column (51) corresponds to the through holes (54) one by one and penetrates through the through holes (54), the end cap (52) is connected to one end of the guide column (51), the pressing cap (53) is connected to the other end of the guide column (51), the first spring (511) is sleeved on the guide column (51), and two ends of the first spring (511) are respectively abutted to the pressing cap (53) and the bottom surface of the panel (4).

2. The PCB welding fixing tool according to claim 1, wherein: holder (2) are including splint (21) and otic placode (211), splint (21) are located underframe (1) and are parallel with underframe (1) inside side, otic placode (211) are fixed at the both ends of splint (21) and are contradicted with underframe (1) bottom surface, two all be equipped with screw (22) on otic placode (211), set up spout (23) that supply two screw (22) to pass on underframe (1), two the equal threaded connection of one end that spout (23) were passed in screw (22) has first knob (221).

3. The PCB welding fixing tool according to claim 2, wherein: clamping grooves (212) are formed in the two sides of the clamping plate (21) in the length direction, and a sinking groove (11) is formed in the inner side wall of the bottom frame (1).

4. The PCB welding fixing tool according to claim 3, wherein: the bottom frame (1) is internally provided with a supporting plate (24) parallel to the clamping plate (21), a plurality of salient points (241) arranged at intervals are arranged on the supporting plate (24), two ends of the supporting plate (24) are respectively provided with a stud (25), and one end of the stud (25) which upwards penetrates through the sliding groove (23) is connected with a second knob (251) through threads.

5. The PCB welding fixing tool according to claim 1, wherein: fixing member (6) are including support (61) and limiting plate (62), support (61) set up at panel (4) bottom surface perpendicularly, limiting plate (62) articulate on support (61) lateral wall, be connected with second spring (622) between limiting plate (62) one end and support (61), the other end extends support (61) outer and is equipped with awl piece (621), underframe (1) lateral wall is seted up and is supplied fixed slot (63) of awl piece (621) embedding, be equipped with direction opening (64) with fixed slot (63) intercommunication on underframe (1).

6. The PCB welding fixing tool according to claim 1, wherein: still include base plate (12) and base (13), base (13) are equipped with two and vertical fixation on base plate (12), underframe (1) is rotated and is connected in two base (13), be equipped with on base (13) and be used for restricting underframe (1) pivoted restriction piece (7).

7. The PCB welding fixing tool according to claim 6, wherein: the limiting part (7) comprises a positioning column (71) and a third spring (72), a shaft hole (73) is formed in the side wall of the base (13), a positioning groove (731) extending towards the base plate (12) is formed in the inner wall of the shaft hole (73), the positioning column (71) is inserted into the positioning groove (731), one end of the third spring (72) is connected with the positioning column (71), the other end of the third spring is connected with the bottom of the positioning groove (731), rotating seats (74) are arranged at two ends of the bottom frame (1), the end portions of the rotating seats (74) are connected with column shafts (75), the column shafts (75) are inserted into the shaft hole (73), two symmetrically distributed positioning planes (751) are arranged at one inserted end of the column shafts, and when the positioning column (71) is abutted against the positioning planes (751), the bottom frame (1) is parallel to the base plate (33).