CN220872992U

CN220872992U - Multi-compatible burning jig

Info

Publication number: CN220872992U
Application number: CN202322611776.4U
Authority: CN
Inventors: 况东起
Original assignee: Volex Interconnect Systems Suzhou Co Ltd
Current assignee: Volex Interconnect Systems Suzhou Co Ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-04-30
Anticipated expiration: 2033-09-26

Abstract

The utility model discloses a multi-compatible burning jig which is used for burning PCBA with burning terminals distributed in a matrix mode and comprises a support fixed on a bottom plate and a pressing plate connected with the support through a push-pull type pressing clamp mechanism. The utility model can adapt to the burning of PCBA of various types and specifications of which the existing burning terminals are distributed in a matrix manner, has strong compatibility and is flexible and convenient to use.

Description

Multi-compatible burning jig

Technical Field

The utility model relates to a multi-compatible burning jig.

Background

In the PCBA manufacturing industry, the burning tool is an important auxiliary device for burning software programs into the PCBA, and the structure of a simplified type of the existing on-market burning tool generally comprises a bracket fixed on a bottom plate, a pressing plate connected by a push-pull type clamp mechanism and arranged on the bracket, and a PCBA carrier plate arranged on the bottom plate and located below the pressing plate, wherein a clamping groove is arranged on the PCBA carrier plate to embed and fix the PCBA, and a plurality of burning needles pointing downwards are fixed on the pressing plate. When the device is used, the push-pull pressing clamp mechanism is operated to drive the pressing plate to press downwards, so that the burning needles are abutted against burning terminals on the PCBA below in a one-to-one correspondence manner, and subsequent program burning is finished.

At present, due to the consideration of production standardization and uniformity, various PCBA (printed circuit board assembly) usually adopts matrixing printing distribution with uniform specification (uniform row spacing and column spacing) on burning terminals. The pitch of the rows and columns of the burning terminals on PCBA of different models conforms to the same matrix specification, but the number and/or the distribution positions on the matrix are different, so that the burning terminals are distributed in different shapes. The design is obviously very convenient for the burning needle of the burning jig to adopt a matched modularized design, namely the burning needle is also arranged and fixed together in a matrix form with the same specification, and the number and the positions on the matrix are completely the same as the burning terminals on the PCBA with the corresponding model, so that the rapid alignment of the burning needle and the PCBA burning terminal can be realized when the PCBA with the model is burnt. However, the following problems are exposed in practical use:

1. The modularized burning needle can only aim at PCBA of one model, so that the existing burning jig is single in function, poor in compatibility and incapable of sharing. And once the PCBA of different models is replaced, the burning needle and the burning terminal on the PCBA cannot be completely aligned, which can lead to the following two conditions:

a. The surface of the PCBA may lack the burn terminals corresponding to the upper burn pins (e.g., when burn pins arranged in a densely-packed matrix are used to cope with burn terminals arranged in a T-shape or L-shape in a matrix on a certain model PCBA), which may scratch the PCBA surface components when the platen is pressed.

B. the lack of the writing pins corresponding to the writing terminals at the lower part (for example, when a single row of writing pins is used to cope with the writing terminals arranged in a densely-distributed matrix on a certain type of PCBA) on the writing pin module results in no writing at all.

Of course, in order to solve the above problems, some writing tools in the industry currently use replaceable writing needle modules, i.e. writing needles of such modules are arranged according to a certain number and positions in advance. However, the problem is that for the existing PCBA of various models, the number of burning terminals and the position distribution on the matrix often have randomness, and the combinable number is very large and is difficult to be exhaustive. This makes it practically impossible to produce so many burner modules, which not only results in great waste in production but also greatly increases the difficulty of screening in use.

2. The PCBA specification fixed on the PCBA carrier plate of the existing burning tool is dead, and once the PCBA specification changes, even if the burning terminal shape on the PCBA specification is completely consistent with the burning needle module above, the PCBA specification and the PCBA module cannot be matched for burning.

Disclosure of Invention

The utility model aims to overcome the problems in the prior art and provide a multi-compatible burning jig which can adapt to the burning of PCBA of various types and specifications with the matrix distribution of the existing burning terminals, has strong compatibility and is flexible and convenient to use.

The technical scheme of the utility model is as follows: the utility model provides a many compatible burning tool for burn PCBA of terminal matrix distribution, burn the tool including fixing the support on the bottom plate, by push-pull press pliers mechanism connection setting clamp plate on the support, but its characterized in that the matrix has arranged the mounting hole of plug burning needle on the clamp plate, form the mounting hole matrix, still include the PCBA activity clamp positioning mechanism that sets up on the bottom plate, it is including being used for pressing from both sides the clamp that opens and shuts of fixed PCBA in order to limit the longitudinal extent of the terminal matrix of burning on it above the mounting hole matrix, this clamp that opens and shuts is fixed on a sideslip seat, still include the transverse adjustment lead screw that is used for adjusting the sideslip about the sideslip seat on the bottom plate, it is used for adjusting the terminal matrix of burning on the PCBA to the transverse extent of mounting hole matrix.

Further, in the present utility model, the column offset value (i.e., the lateral spacing between adjacent burning terminal centers) of the burning terminal matrix on the PCBA is x, the row offset value (i.e., the longitudinal spacing between adjacent burning terminal centers) is y, the column offset value (i.e., the lateral spacing between adjacent mounting hole centers) of the mounting hole matrix is a, x=na, and the row offset value (i.e., the longitudinal spacing between adjacent mounting hole centers) is b, y=mb, N and M are all non-zero integers; the opening and closing clamp comprises a fixed clamping block and a movable clamping block which is arranged on the traversing seat by a longitudinal adjusting screw rod and can move back and forth relative to the fixed clamping block so as to clamp PCBA; wherein:

A first transverse alignment scale with a as a unit scale is marked on the fixed clamping block, and a second transverse pair Ji Biaoche with a as a unit scale is marked on the bottom plate; the first transverse pair Ji Biaoche and the second transverse alignment scale are respectively provided with a reference scale which is vertically aligned with the connecting line of the center of the assembly holes in the leftmost column of the assembly hole matrix; and the transverse moving seat is marked with a longitudinal pair Ji Biaoche taking b as a unit scale, the longitudinal alignment scale takes an inner edge attached to the bottom edge of the PCBA on the fixed clamping block as a starting end, and the inner edge is vertically aligned with the central connecting line of the assembly holes in the bottommost row of the assembly hole matrix.

Furthermore, the burning needle is a spring burning needle and comprises a sleeve pipe with a spring clamped in the sleeve pipe and a needle body penetrating through the sleeve pipe, wherein a flange clamped with the spring is arranged on the needle body, and the tail end of the needle body is connected with a lead. The spring burning needle can provide elastic buffering force of the needle body, and the bottom needle head is prevented from being broken and damaged due to collision with the burning terminal on the PCBA, or the surface of the PCBA is prevented from being punctured.

Further, in the utility model, the assembly hole is a conical hole, and the periphery of the bottom of the sleeve is provided with a conical part tightly matched with the conical hole.

Further, the transverse adjusting screw rod comprises a transverse guide groove arranged on the bottom plate, a transverse adjusting screw rod penetrating through the transverse guide groove and a transverse nut block which is matched with the transverse adjusting screw rod and is simultaneously fixed at the bottom of the transverse moving seat, and a transverse adjusting knob is fixed at the end part of the transverse adjusting screw rod.

Further, the longitudinal adjusting screw rod comprises a longitudinal guide groove arranged on the transverse moving seat, a longitudinal adjusting screw rod penetrating through the longitudinal guide groove and a longitudinal moving nut block which is matched with the longitudinal adjusting screw rod and is simultaneously fixed at the bottom of the movable clamping block, and a longitudinal adjusting knob is fixed at the end part of the longitudinal adjusting screw rod.

Furthermore, in the utility model, the opposite surfaces of the fixed clamping block and the movable clamping block are respectively provided with a step part for supporting the PCBA.

Furthermore, the left ends of the fixed clamping block and the movable clamping block are respectively provided with a blocking protrusion in a extending way for being in abutting alignment with the left side edge of the PCBA.

Furthermore, in the utility model, a plurality of vertical guide posts are fixed on the bottom plate, and guide holes matched with the vertical guide posts are arranged on the bottom plate.

The actual operation mode of the utility model is as follows:

initially, the matrix of mounting holes is empty, in which no burner pins are inserted. And the reference scale of the first transverse alignment scale on the fixed clamping block, the reference scale of the second transverse alignment scale on the bottom plate and the central connecting line of the assembly holes of the leftmost column in the assembly hole matrix are vertically aligned.

When a PCBA of a certain model is taken, the PCBA is clamped and fixed through an opening and closing clamp, then the scale distance from the bottom edge of the PCBA to the central connecting line of the bottommost row of burning terminals of the burning terminal matrix on the PCBA is calculated through a longitudinal alignment scale, and the bottommost row of assembling holes, in which burning needles need to be installed, in the upper assembling hole matrix are found according to the scale distance.

Meanwhile, the scale distance between the center line of the leftmost burning terminal of the burning terminal matrix on the PCBA and the reference scale of the first transverse alignment scale is calculated through the first transverse alignment scale, the transverse adjusting screw rod is adjusted according to the scale distance, the transverse moving seat is driven to drive the opening and closing clamp on the transverse moving seat and the PCBA to transversely move the scale distance until the center line of the leftmost burning terminal of the burning terminal matrix on the PCBA is aligned with the reference scale of the second transverse alignment scale on the bottom plate, at the moment, the center line of the leftmost burning terminal of the burning terminal matrix on the PCBA is actually vertically aligned with the center line of the assembly holes of the leftmost column in the upper assembly hole matrix, and the burning needle can be installed from the leftmost column assembly holes in the assembly hole matrix.

Finally, the corresponding burning needles are inserted and installed in the assembly hole matrix by referring to the number and the position arrangement of the actual burning terminals in the lower burning terminal matrix, so that when the pressing plate is pressed, the burning needles can be contacted with the corresponding burning terminals on the PCBA in a one-to-one correspondence manner, and further burning is completed.

The technical scheme of the utility model has the following advantages:

The utility model is suitable for the existing PCBA burning of different types and specifications of burning terminals in matrix distribution, has strong compatibility, is flexible and convenient to use, and has the following specific characteristics:

1. In the utility model, as the mounting hole matrix is arranged on the pressing plate to plug and assemble the burning needle, compared with the existing fixed burning needle module, the burning needle can be freely plugged and assembled and arranged so as to be matched with the burning terminal matrix on PCBA of various types, has strong use flexibility and compatibility, can be compatible with the burning of PCBA of various types with the matrix distribution of the burning terminals at present by only one set of burning jig, and greatly saves the burning cost.

2. Compared with the conventional fixed clamping groove for embedding the PCBA, the PCBA movable clamping and positioning mechanism is designed in the utility model, and the opening and closing clamp in the PCBA movable clamping and positioning mechanism can adapt to PCBA with different specifications and sizes to implement clamping and fixing, so that the compatibility of the burning jig is greatly expanded; meanwhile, the transverse adjusting screw rod and the transverse moving seat are introduced to ensure that the opening and closing clamp and the PCBA can be adjusted in transverse displacement, so that the burning terminal matrix on the PCBA is adjusted to be in the transverse range of the assembly hole matrix, the method is particularly suitable for aligning adjustment of PCBA with longer length, the compatibility of the burning tool is greatly enhanced, and the burning cost is saved.

3. According to the utility model, by means of the first transverse alignment scale arranged on the fixed clamping block, the second transverse alignment scale and the reference scale thereof on the bottom plate and the longitudinal alignment scale on the transverse moving seat, the fine alignment calibration of the burning terminal matrix on the PCBA and the upper assembly hole matrix can be realized, and the finally installed burning needle can be ensured to realize the precise alignment with the burning terminal on the lower PCBA, so that the use reliability of the burning jig is greatly improved.

4. The spring burning needle is preferable, and can provide elastic buffering force for the needle body, so that the bottom needle head is prevented from being broken and damaged due to collision with the burning terminal on the PCBA, or the surface of the PCBA is punctured, and the safety of equipment is enhanced.

The objects, advantages and features of the present utility model will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 with the vertical guide posts and the platen removed;

FIG. 3 is a schematic view of the structure of FIG. 1 with the movable clamp blocks removed from the vertical guide post, the press plate and the open-close clamp;

FIG. 4 is a schematic view of the press plate of FIG. 1 in a single structure;

FIG. 5 is an enlarged schematic view of the matrix of mounting holes of FIG. 1;

FIG. 6 is a schematic diagram showing the individual structure of the spring burner needle;

Fig. 7 is an exemplary diagram of a model PCBA for burning.

Wherein: 1. PCBA; 2. a burning terminal; 3. a bottom plate; 4. a bracket; 5. push-pull type press pliers mechanism; 6. a pressing plate; 7. a burning needle; 701. a sleeve; 702. a needle body; 703. a wire; 8. a fitting hole; 9. a traversing seat; 10. transversely adjusting a screw rod; 1001. a transverse guide slot; 1002. a transverse adjusting screw; 1003. a lateral adjustment knob; 11. fixing the clamping blocks; 11a, inner edge; 12. longitudinally adjusting a screw rod; 1201. a longitudinal guide slot; 1202. a longitudinal adjustment screw; 1203. longitudinally moving the nut block; 1204. a longitudinal adjustment knob; 13. a movable clamping block; 14. a first transverse pair Ji Biaoche; 15. a second transverse pair Ji Biaoche; A. a reference scale; 16. a longitudinal pair Ji Biaoche; 17. a step portion; 18. a blocking protrusion; 19. a vertical guide post; 20. and (5) a guide hole.

Detailed Description

Examples: the following describes a specific embodiment of the multi-compatible burning tool according to the present utility model with reference to fig. 1 to 7:

The burning jig is mainly applied to the burning of various types and specifications of PCBA with the burning terminals being distributed in matrix, and as shown in fig. 7, in this embodiment, a type of PCBA1 is exemplified, which is a known rectangular plate, on which a matrix of burning terminals 2 is arranged near the right, two rows and four columns of the matrix of burning terminals 2, the first row has four burning terminals 2, and the second row has only two adjacent burning terminals 2 from the left. The column offset value (i.e., the lateral spacing of the centers of adjacent burning terminals 2) of the matrix of burning terminals 2 on the PCBA1 is x, and the row offset value (i.e., the longitudinal spacing of the centers of adjacent burning terminals 2) is y, and x=y.

Further referring to fig. 1 to 6, the multi-compatible burning tool of this embodiment is integrally composed of a base plate 3, a bracket 4, a push-pull pressing clamp mechanism 5, a pressing plate 6, a burning needle 7 and a PCBA movable clamping and positioning mechanism. Wherein, as in the conventional technology, the bracket 4 is fixed on the bottom plate 3, and the pressing plate 6 is connected and arranged on the bracket 4 by the push-pull pressing clamp mechanism 5, thereby realizing the pressing and fixing. Four rectangular vertical guide posts 19 are fixed on the bottom plate 3, and guide holes 20 matched with the vertical guide posts 19 are formed in the pressing plate 6, as shown in fig. 1, so that the pressing plate 6 can stably move up and down along the vertical guide posts 19.

The core improvement of the utility model is that the press plate 6 is provided with the assembly holes 8 which can be inserted and pulled out of the burning needle 7 in a matrix manner at the position close to the middle, so as to form a matrix of the assembly holes 8. As further shown in fig. 4 and 5, the matrix of the mounting holes 8 in this embodiment is 10 rows and 10 columns, the column offset value (i.e., the lateral spacing between the centers of the adjacent mounting holes 8) is a, and in this embodiment a=x, and the row offset value (i.e., the longitudinal spacing between the centers of the adjacent mounting holes 8) is b, and in this embodiment b=y.

Further referring to fig. 6, the burning needle 7 in this embodiment is a spring burning needle, and includes a sleeve 701 with a spring (not visible in the drawing) clamped therein, and a needle body 702 penetrating through the sleeve 701, wherein a flange clamped with the spring is provided on the needle body 702, and a wire 703 is connected to the end of the needle body 702. And each assembly hole 8 is a conical hole, and the periphery of the bottom of the sleeve 701 of the spring burning needle is provided with a conical part tightly matched with the conical hole.

Another core improvement of the utility model is a movable PCBA clamping and positioning mechanism arranged on the bottom plate 3, and the movable PCBA clamping and positioning mechanism consists of an opening and closing clamp, a transverse moving seat 9 and a transverse adjusting screw rod 10. The opening and closing clamp is used for clamping and fixing the PCBA1 so as to limit the matrix of the burning terminals 2 on the PCBA to be within the longitudinal range of the matrix of the upper assembly holes 8, the opening and closing clamp is fixed on the transverse moving seat, and the transverse adjusting screw rod 10 is used for adjusting the transverse moving seat 9 to transversely move left and right so as to adjust the matrix of the burning terminals 2 on the PCBA1 to be within the transverse range of the matrix of the assembly holes 8.

The movable PCBA clamping and positioning mechanism is further specifically described with reference to FIGS. 1-3. The opening and closing clamp consists of a fixed clamping block 11 and a movable clamping block 13 which is arranged on the traversing seat 9 by a longitudinal adjusting screw rod 12 and can move back and forth relative to the fixed clamping block 11 to clamp the PCBA 1. And the opposite surfaces of the fixed clamping block 11 and the movable clamping block 13 are respectively provided with a step part 17 for supporting the PCBA1, and meanwhile, the left ends of the fixed clamping block 11 and the movable clamping block 13 are respectively provided with a blocking protrusion 18 in a extending direction for being in close alignment with the left side edge of the PCBA1, and the method is particularly shown in fig. 2.

The transverse adjusting screw 10 is composed of a transverse guide groove 1001 arranged on the bottom plate 3, a transverse adjusting screw 1002 penetrating through the transverse guide groove 1001, a transverse nut block (not visible in the figure) which is matched with the transverse adjusting screw 1002 and is fixed at the bottom of the transverse moving seat 9, and a transverse adjusting knob 1003 fixed at the end part of the transverse adjusting screw 1002, and is used for adjusting the transverse moving seat 9 to transversely move left and right.

The longitudinal adjusting screw 12 is composed of a longitudinal guide groove 1201 arranged on the traversing seat 9, a longitudinal adjusting screw 1202 penetrating through the longitudinal guide groove 1201, a longitudinal moving nut block 1203 which is matched with the longitudinal adjusting screw 1202 and is fixed at the bottom of the movable clamping block 13 at the same time, and a longitudinal adjusting knob 1204 fixed at the end part of the longitudinal adjusting screw 1202, and is used for adjusting the movable clamping block 13 to move back and forth relative to the fixed clamping block 11 so as to clamp the PCBA1.

Still referring to fig. 1 to 3, in the PCBA movable clamping and positioning mechanism, a first transverse pair Ji Biaoche with a as a unit scale is marked on the fixed clamping block 11 (it is required to describe that in this embodiment, the front wall surface and the top wall surface of the fixed clamping block 11 are both provided with a first transverse pair Ji Biaoche, which are essentially corresponding identical pairs Ji Biaoche), and a second transverse pair Ji Biaoche with a as a unit scale is marked on the base plate 3, and the length of the second transverse pair is longer than that of the first transverse alignment scale 14. And the first lateral alignment scale 14 and the second lateral alignment scale 15 are provided with reference scales a vertically aligned with the central lines of the assembly holes 8 in the leftmost columns of the matrix of the assembly holes 8.

Meanwhile, in this embodiment, the traversing seat 9 is marked with a longitudinal alignment scale 16 with b as a unit scale, the longitudinal alignment scale 16 uses an inner edge 11a of the fixed clamping block 11, which is attached to the bottom edge of the PCBA1, as a starting end, and the inner edge 11a is vertically aligned with the central line of the assembly holes 8 in the bottommost row of the assembly hole 8 matrix.

The actual operation mode of the present utility model is described below with reference to fig. 1 to 7:

Initially, the matrix of mounting holes 8 is empty, in which no burner pins 7 are inserted. And the reference scale A of the first transverse alignment scale 14 on the fixed clamping block 11, the reference scale A of the second transverse alignment scale 15 on the bottom plate 3 and the central connecting line of the assembly holes 8 in the leftmost column in the assembly hole 8 matrix are vertically aligned.

When a certain type of PCBA1 shown in fig. 7 is taken, the PCBA1 is clamped and fixed by an opening and closing clamp, then the scale distance from the bottom edge of the PCBA1 to the central line of the bottommost row of burning terminals 2 of the matrix of burning terminals 2 on the PCBA is calculated by a longitudinal alignment scale 16, and the bottommost row of assembling holes 8, in which the burning needles 7 need to be installed, in the matrix of the upper assembling holes 8 is found according to the scale distance.

Meanwhile, the scale distance between the central line of the leftmost row of burning terminals 2 of the array of burning terminals 2 on the PCBA1 and the reference scale A of the first transverse alignment scale 14 is calculated through the first transverse alignment scale 14, the transverse adjusting screw rod 10 is adjusted according to the scale distance, the transverse moving seat 9 is driven to drive the opening and closing clamp on the transverse moving seat and the PCBA1 to transversely move the scale distance until the central line of the leftmost row of burning terminals 2 of the array of burning terminals 2 on the PCBA1 is aligned with the reference scale A of the second transverse alignment scale 15 on the bottom plate 3, at this time, the central line of the leftmost row of burning terminals 2 of the array of burning terminals 2 on the PCBA1 is actually vertically aligned with the central line of the assembly holes 8 of the leftmost row in the array of assembly holes 8, and the burning needle 7 can be installed from the leftmost row of assembly holes 8 in the array of assembly holes 8.

Finally, the corresponding burning needles 7 are inserted and installed in the matrix of the assembly holes 8 by referring to the number and the position arrangement of the actual burning terminals 2 in the matrix of the lower burning terminals 2, so that when the pressing plate 6 is pressed, the burning needles 7 can be in one-to-one correspondence contact with the corresponding burning terminals 2 on the PCBA1, and further burning is completed.

Of course, the above is only a specific application example of the present utility model, and the protection scope of the present utility model is not limited in any way. In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent replacement or equivalent transformation fall within the scope of the utility model.

Claims

1. The utility model provides a many compatible burning tool for the burning of PCBA (1) of burning terminal (2) matrixing distribution, burning tool is including fixing support (4) on bottom plate (3), press clamp (5) connection by push-pull and set up clamp plate (6) on support (4), but characterized in that on clamp plate (6) matrix arrangement has mounting hole (8) of plug burning needle (7), form mounting hole (8) matrix, still include the PCBA activity clamp positioning mechanism of setting on bottom plate (3), it includes the anchor clamps that open and shut that are used for pressing from both sides tight fixed PCBA (1) in order to inject the burning terminal (2) matrix on it in the longitudinal extent of top mounting hole (8) matrix, this anchor clamps that open and shut are fixed on a base (9), still include setting up on bottom plate (3) be used for adjusting sideslip base (9) left and right sideslip lateral adjustment lead screw (10), it is used for adjusting the PCBA (2) matrix on (1) to the lateral extent of matrix of mounting hole (8).

2. A multi-compatible burning tool according to claim 1, characterized in that the array offset value of the burning terminal (2) matrix on the PCBA (1) is x and the row offset value is y, the array offset value of the fitting hole (8) matrix is a, x=na and the row offset value is b, y=mb, N and M are all non-zero integers; the opening and closing clamp comprises a fixed clamping block (11) and a movable clamping block (13) which is arranged on the transverse moving seat (9) by a longitudinal adjusting screw rod (12) and can move back and forth relative to the fixed clamping block (11) so as to clamp the PCBA (1); wherein:

The fixed clamping block (11) is marked with a first transverse pair Ji Biaoche (14) with a unit scale, and the bottom plate (3) is marked with a second transverse pair Ji Biaoche (15) with a unit scale as well; the first transverse pair Ji Biaoche (14) and the second transverse pair Ji Biaoche (15) are respectively provided with a reference scale (A) which is vertically aligned with the central connecting line of the assembly holes (8) of the leftmost column in the assembly hole (8) matrix; and a longitudinal pair Ji Biaoche (16) taking b as a unit scale is marked on the transverse moving seat (9), the longitudinal pair Ji Biaoche (16) takes an inner edge (11 a) attached to the bottom edge of the PCBA (1) on the fixed clamping block (11) as a starting end, and the inner edge (11 a) is vertically aligned with the central connecting line of the assembly holes (8) in the bottommost row of the assembly hole (8) matrix.

3. The multi-compatible burning tool according to claim 1, wherein the burning needle (7) is a spring burning needle, and comprises a sleeve (701) with a spring clamped therein and a needle body (702) penetrating through the sleeve (701), wherein a flange clamped with the spring is arranged on the needle body (702), and a wire (703) is connected to the end of the needle body (702).

4. A multi-compatible burning tool according to claim 3, wherein the assembly hole (8) is a tapered hole, and the outer periphery of the bottom of the sleeve (701) is provided with a tapered portion tightly fitted with the tapered hole.

5. The multi-compatible burning jig according to claim 1, wherein the transverse adjusting screw (10) comprises a transverse guide groove (1001) arranged on the bottom plate (3), a transverse adjusting screw (1002) penetrating through the transverse guide groove (1001) and a transverse nut block which is matched with the transverse adjusting screw (1002) and is simultaneously fixed at the bottom of the transverse moving seat (9), and a transverse adjusting knob (1003) is fixed at the end part of the transverse adjusting screw (1002).

6. The multi-compatible burning jig according to claim 2, wherein the longitudinal adjusting screw (12) comprises a longitudinal guide groove (1201) arranged on the traverse base (9), a longitudinal adjusting screw (1202) penetrating through the longitudinal guide groove (1201), and a longitudinal moving nut block (1203) which is matched with the longitudinal adjusting screw (1202) and is simultaneously fixed at the bottom of the movable clamping block (13), and a longitudinal adjusting knob (1204) is fixed at the end part of the longitudinal adjusting screw (1202).

7. A multi-compatible burning jig according to claim 2, wherein the facing surfaces of the fixed clamping block (11) and the movable clamping block (13) are formed with a step portion (17) for supporting the PCBA (1).

8. A multi-compatible burning tool according to claim 2, wherein the left ends of the fixed clamping block (11) and the movable clamping block (13) are provided with blocking protrusions (18) extending toward each other for abutting alignment with the left side edge of the PCBA (1).

9. A multi-compatible burning tool according to claim 1, characterized in that the bottom plate (3) is fixed with a plurality of vertical guide posts (19), and the pressing plate (6) is provided with guide holes (20) matched with the vertical guide posts (19).