Circuit board welding pin positioning tool

Abstract

The utility model relates to the technical field of welding jigs, and discloses a circuit board welding pin positioning tool which comprises a bottom plate, a pin seat and a gasket. Specifically, the bottom plate is provided with an accommodating cavity, and the needle seat is arranged in the accommodating cavity; the pin seat is provided with a plurality of positioning holes used for placing Pins, and the plurality of positioning holes are respectively arranged corresponding to a plurality of welding pin holes of a circuit board; the positioning hole extends along the vertical direction, and the positioning hole is suitable for enabling at least part of the structure of the Pin needle to extend upwards out of the needle seat. The at least one gasket is arranged on the bottom plate and is positioned on the peripheral side of the accommodating cavity so as to support the circuit board; and the thickness of the gasket is set as follows: the Pin needles are correspondingly inserted into the welding needle holes. The circuit board welding pin positioning tool provided by the utility model can ensure the welding smoothness of a plurality of pins on the circuit board, avoids the deformation of the circuit board, and ensures the welding quality.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to a circuit board welding pin positioning tool. Background Art

[0002] In an endoscope, light source illumination is the basis of endoscope imaging, and the light source interface circuit board is the hub of light source transmission. The light source interface circuit board needs to be welded with multiple pins, and each pin must be welded flat to avoid poor contact and affect the use of the endoscope.

[0003] In the related art, manual work is mainly used to insert the pins into the solder pin holes of the light source interface circuit board one by one, and then soldering is performed. However, the length of the pin is much longer than the length inserted into the light source interface circuit board. After being inserted into the solder pad hole, it is often tilted due to its own gravity or manual work errors, resulting in uneven soldering of the pins; and during the operation, the light source interface circuit board is often easily compressed and deformed. Whether it is uneven soldering of the pins or deformation of the light source interface circuit board, it will affect the soldering quality, resulting in poor soldering of the final product, and the risk of poor contact of the light source interface. Utility Model Content

[0004] In view of this, the utility model provides a circuit board soldering pin positioning tool to solve the problem that when the light source interface circuit board is soldered with the pin pin, the pin pin is easily soldered unevenly and the circuit board is easily deformed.

[0005] In the first aspect, the utility model provides a circuit board solder pin positioning tool, including a base plate, a pin holder and a gasket. Specifically, the base plate is provided with a receiving cavity, and the pin holder is provided in the receiving cavity; the pin holder is provided with a plurality of positioning holes for placing the pin pins, and the plurality of positioning holes are respectively provided corresponding to the plurality of solder pin holes of the circuit board; the positioning holes are provided to extend vertically, and the positioning holes are suitable for making at least part of the structure of the pin pin extend upward from the pin holder. At least one gasket is provided on the base plate and is located on the outer peripheral side of the receiving cavity to support the circuit board; the thickness of the gasket is set to: make the pins correspondingly inserted into the solder pin holes.

[0006] Beneficial effect: The positioning hole on the needle holder is extended vertically to constrain the pin in the vertical direction, and under the action of the gasket, the circuit board is supported above the needle holder, so that the multiple pins on the needle holder are inserted into the soldering pin holes of the circuit board in the vertical direction without being skewed, thereby ensuring the flatness of the pins soldered on the circuit board. In addition, the circuit board is placed on the gasket, which can support the circuit board to prevent the circuit board from being deformed due to pressure during pin insertion or welding.

[0007] In some embodiments, the circuit board solder pin positioning tool also includes a first limiting structure and a second limiting structure. The first limiting structure is arranged between the needle seat and the inner cavity wall of the accommodating cavity, and is used to limit the installation direction of the needle seat in the accommodating cavity; the second limiting structure is arranged on the bottom plate, and is used to limit the placement direction of the circuit board on the needle seat.

[0008] Beneficial effect: The first limiting structure and the second limiting structure respectively limit the directions of the needle seat and the circuit board, so that the arrangement positions of the multiple positioning holes on the needle seat can correspond to the arrangement positions of the solder pin holes on the circuit board, saving the step of adjusting the relative position between the circuit board and the needle seat, which is convenient and quick.

[0009] In some embodiments, the accommodating cavity is hole-shaped and includes a large diameter section and a small diameter section connected to each other, and a step surface is formed between the large diameter section and the small diameter section; the needle seat includes a pin insertion portion and a support portion arranged on the periphery of the pin insertion portion, the pin insertion portion protrudes from the support portion in the extension direction of the positioning hole, and is arranged corresponding to the small diameter section, and the support portion abuts against the step surface; the first limiting structure is arranged between the pin insertion portion and the small diameter section, and the positioning hole is arranged on the pin insertion portion.

[0010] Beneficial effect: The support portion abuts against the step surface, providing support for the pin insertion portion at the periphery of the pin insertion portion, so that the pin insertion portion is erected in the accommodating cavity, so as to realize the vertical extension of the positioning hole and provide sufficient placement space for the Pin pin.

[0011] In some embodiments, the first limiting structure includes a groove and a protrusion that are arranged in a coordinated manner, and the groove and the protrusion are respectively arranged correspondingly on the small-diameter section and the pin insertion portion.

[0012] Beneficial effects: simple structure and easy to manufacture.

[0013] In some embodiments, a plurality of limit blocks are arranged at circumferential intervals on the support portion, the limit blocks are located on one side of the positioning hole and extend upward, and the plurality of limit blocks are suitable for limiting the circuit board so that the positioning hole is opposite to the solder pin hole.

[0014] Beneficial effect: Multiple limit blocks work together with the first limit structure and the second limit structure to achieve precise positioning between the solder pin hole of the circuit board and the pin pin placed in the positioning hole, without the need for repeated adjustment, and the operation is convenient and quick.

[0015] In some embodiments, the second limiting structure includes two groups of positioning bolts, which are threadedly connected to the top of the base plate, one group of positioning bolts is arranged on the side of the gasket away from the accommodating cavity, and the other group of positioning bolts is arranged close to the accommodating cavity.

[0016] Beneficial effects: The positioning bolts are used to limit the placement direction of the circuit board at two different positions, the structure is simple, and the materials are easy to obtain.

[0017] In some embodiments, two gaskets are provided, and the two gaskets are arranged oppositely on two sides of the accommodating cavity.

[0018] Beneficial effect: This arrangement makes it easy to support the circuit board on a horizontal plane, and it is not easy to deform when under pressure, further ensuring the welding effect.

[0019] In some embodiments, the circuit board solder pin positioning tool further includes a clamping assembly, which is disposed on the bottom plate and corresponding to the gasket, and is used to clamp and fix the circuit board on the gasket.

[0020] Beneficial effect: Improve the stability of the circuit board position, avoid displacement during subsequent welding, and cause uneven welding or circuit board deformation.

[0021] In some embodiments, the clamping assembly includes an adjusting member and a pressing member, wherein the pressing member is arranged on the adjusting member so that its position can be adjusted in a horizontal direction, and the pressing member is extended toward the gasket.

[0022] Beneficial effect: The clamping piece adjusts its position in the horizontal direction to avoid components on the circuit board, thereby avoiding damage to other components during clamping.

[0023] In some embodiments, the clamping assembly further includes a support and a locking member, wherein the support is mounted on the base plate, the adjusting member and the locking member are both disposed on the support, and the locking member is suitable for locking or releasing the clamping member vertically.

[0024] Beneficial effect: The clamping assembly arranged in this way does not need to be manually clamped to achieve the clamping of the clamping piece, thus further improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a circuit board soldering pin positioning tool according to an embodiment of the utility model;

[0027] Figure 2 An exploded view of a circuit board soldering pin positioning tool according to an embodiment of the utility model;

[0028] Figure 3 for Figure 2 A partial enlarged schematic diagram of

[0029] Figure 4The figure is a schematic structural diagram of a clamping assembly according to an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 1. Bottom plate; 11. Accommodating cavity; 111. Large diameter section; 112. Small diameter section; 2. Needle holder; 21. Pin insertion part; 211. Positioning hole; 22. Support part; 221. Limit block; 3. Gasket; 4. First limiting structure; 41. Groove; 5. Second limiting structure; 51. Positioning bolt; 6. Pressing clamp assembly; 61. Adjusting part; 62. Pressing part; 63. Support; 64. Locking part; 10. Circuit board; 10a. Solder pin hole; 20. Pin needle. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0034] The utility model provides a circuit board solder pin positioning tool, which is used to insert pins 20 into multiple solder pin holes 10a of a circuit board 10, so as to realize the positioning of the circuit board 10 and multiple pins 20, so as to facilitate the subsequent soldering operation. Among them, the pin 20 is also called a plug pin or a plug pin pin, which is a metal material used to complete the conduction (transmission) of electricity (signals) in a connector (including but not limited to a connector of a circuit board), and is a key component of the connector.

[0035] Specifically, the circuit board solder pin positioning tool comprises a base plate 1, a pin seat 2 and a gasket 3 arranged on the base plate 1. The base plate 1 is provided with a receiving cavity 11, the pin seat 2 is arranged in the receiving cavity 11, and the pin seat 2 is used to place the pin 20; the gasket 3 is arranged on the base plate 1 and is located on the outer peripheral side of the receiving cavity 11 to support the circuit board 10. The gasket 3 is suitable for supporting the circuit board 10 above the pin seat 2, and the thickness of the gasket 3 is set to enable the pin 20 to be correspondingly inserted into the solder pin hole 10a.

[0036] Furthermore, the needle seat 2 is provided with a plurality of positioning holes 211 for placing the pin pins 20, and the plurality of positioning holes 211 are respectively arranged corresponding to the plurality of solder pin holes 10a of the circuit board 10. The positioning holes 211 are arranged to extend vertically, and the positioning holes 211 are suitable for making at least a part of the structure of the pin pin 20 extend upward from the needle seat 2, so that the pin pin 20 can be inserted upward into the solder pin hole 10a of the circuit board 10.

[0037] In this embodiment, the positioning hole 211 on the needle seat 2 is extended vertically to constrain the Pin 20 in the vertical direction, and under the action of the gasket 3, the circuit board 10 is supported above the needle seat 2, so that the multiple Pins 20 on the needle seat 2 are inserted into the soldering pin holes 10a of the circuit board 10 in the vertical direction without being skewed, thereby ensuring the flatness of the Pin 20 soldered on the circuit board 10. In addition, the circuit board 10 is placed on the gasket 3, which can support the circuit board 10 to prevent the circuit board 10 from being deformed due to pressure during pin insertion or soldering.

[0038] Therefore, the circuit board solder pin positioning tool provided in the present application can improve the flatness of the soldering of the pin pin 20, avoid deformation of the circuit board 10, thereby improving the soldering quality, avoiding problems such as poor soldering, and ensuring the reliability of the finished product.

[0039] It is understood that the circuit board 10 mentioned in the present application is not limited to the light source interface circuit board 10 of the endoscope, and its structure is not limited to the circuit board 10 of the light source interface of the present application. Figure 1-4 The structure shown in the figure can be used as long as the circuit board soldering pin positioning tool of the present application can be used to realize the positioning between the circuit board 10 and the plurality of pin pins 20.

[0040] It should be noted that the arrangement of the plurality of positioning holes 211 on the pin holder 2 depends on the arrangement of the soldering pin holes 10a on the circuit board 10, so that the pins placed in the positioning holes 211 can be inserted into the soldering pin holes 10a one by one. Figure 1-3 As shown, the multiple soldering pin holes 10a of the circuit board 10 are arranged in a circular structure, and the multiple positioning holes 211 on the needle holder 2 are also arranged in a circular structure to correspond one to one with the soldering holes.

[0041] Specifically, the pin 20 is placed in the positioning hole 211 along the length direction, and the top end extends upward from the pin seat 2 to be inserted into the soldering pin hole 10 a of the circuit board 10 .

[0042] like Figure 2 and 3As shown, the needle seat 2 has a certain thickness in the vertical direction to constrain the pin 20 in the vertical direction. Exemplarily, the pin 20 is inserted into the positioning hole 211 and has an interference fit with the positioning hole 211 to ensure that the pin 20 is stably placed in the positioning hole 211 without being skewed.

[0043] Furthermore, the circuit board soldering pin positioning tool further includes a first limiting structure 4 and a second limiting structure 5. The first limiting structure 4 is arranged between the needle seat 2 and the inner cavity wall of the accommodating cavity 11, and is used to limit the installation direction of the needle seat 2 in the accommodating cavity 11; the second limiting structure 5 is arranged on the bottom plate 1, and is used to limit the placement direction of the circuit board 10 on the needle seat 2. In this way, the first limiting structure 4 and the second limiting structure 5 respectively limit the directions of the needle seat 2 and the circuit board 10, so that the arrangement positions of the multiple positioning holes 211 on the needle seat 2 can correspond to the arrangement positions of the soldering pin holes 10a on the circuit board 10, saving the step of adjusting the relative position between the circuit board 10 and the needle seat 2, which is convenient and quick.

[0044] Further as Figure 2 and 3 As shown, in some embodiments, the accommodating cavity 11 is recessed in the middle of the top of the base and is constructed as a stepped hole structure. The accommodating cavity 11 includes a large diameter section 111 and a small diameter section 112 connected to each other, the large diameter section 111 is close to the top of the bottom plate 1, and a stepped surface is formed between the large diameter section 111 and the small diameter section 112.

[0045] In this embodiment, the needle seat 2 includes a pin insertion portion 21 and a support portion 22 arranged on the periphery of the pin insertion portion 21, the pin insertion portion 21 protrudes from the support portion 22 in the extension direction of the positioning hole, and is arranged corresponding to the small diameter section 112, and the support portion 22 abuts against the step surface; the first limiting structure 4 is arranged between the pin insertion portion 21 and the small diameter section 112, and the positioning hole 211 is arranged on the pin insertion portion 21.

[0046] The support portion 22 abuts against the step surface and provides support for the pin insertion portion 21 at the periphery of the pin insertion portion 21, so that the pin insertion portion 21 is mounted in the accommodating cavity 11, so as to realize the vertical extension of the positioning hole 211 and provide sufficient placement space for the Pin 20.

[0047] like Figure 2 and 3 As shown, exemplarily, the cross-sections of the pin portion 21 and the support portion 22 are both configured as annular structures, and the support portion 22 is arranged radially outside the pin portion 21 , and a plurality of positioning holes 211 are arranged at intervals along the circumference of the pin portion 21 .

[0048] In some embodiments not shown in the figures, the cross-sections of the pin portion 21 and the support portion 22 may also be configured as a circle, a rectangle, a square or other shapes, as long as the positioning hole 211 provided on the pin portion 21 can correspond to the solder pin hole 10a on the circuit board 10. Correspondingly, the cross-section of the accommodating cavity 11 may also be configured as a circle, a square, a rectangle or other shapes, as long as it can match the shape of the needle holder 2 and realize the function of installing the needle holder 2 in the accommodating cavity 11.

[0049] It should be noted that the cross section in this article refers to the cross section on the horizontal plane perpendicular to the vertical direction.

[0050] Exemplarily, the accommodating cavity 11 may vertically penetrate the bottom plate 1 , or the accommodating cavity 11 may be a non-penetrating structure, as long as there is enough accommodating space to accommodate the needle seat 2 and the Pin needle 20 .

[0051] In some embodiments, the first limiting structure 4 includes a groove 41 and a protrusion that are arranged in a coordinated manner, and the groove 41 and the protrusion are respectively arranged on the surface of the small diameter section 112 opposite to the pin insertion part 21. In this arrangement, the groove 41 and the protrusion are engaged with each other to limit the circumferential position of the pin insertion part 21, and thus the circumferential position of the needle seat 2 is limited, thereby limiting the installation direction of the needle seat 2 in the accommodating cavity 11, so that the needle seat 2 can be placed in the accommodating cavity 11 according to a predetermined direction, which is not only simple in structure, but also easy to manufacture.

[0052] Specifically, it can be realized as Figure 2 and 3 As shown, the groove 41 is formed on the surface of the small diameter section 112 facing the pin portion 21, and the protrusion (not shown) is protruding from the surface of the pin portion 21 facing the small diameter section 112. Exemplarily, the groove 41 and the protrusion both extend vertically, and the groove 41 is arranged through the step surface.

[0053] Specifically, the needle seat 2 is detachably connected to the bottom plate 1, so as to place the pin 20 in the needle seat 2. In this embodiment, the needle seat 2 is clamped in the accommodating cavity 11 through the matching groove 41 and the protrusion.

[0054] It is understandable that the groove 41 may also be provided on the surface of the pin insertion portion 21 facing the small diameter section 112 , and the protrusion may be provided on the surface of the small diameter section 112 facing the pin insertion portion 21 .

[0055] Furthermore, in some embodiments, Figures 1 to 3 As shown, the support portion 22 is provided with a plurality of limit blocks 221 at circumferential intervals. The limit blocks 221 are located on one side of the positioning hole 211 and extend upward. The plurality of limit blocks 221 are suitable for being clamped on the side of the circuit board 10 to limit the circuit board 10 so that the positioning hole 211 is opposite to the solder pin hole 10a.

[0056] Among them, the first limiting structure 4 and the second limiting structure 5 limit the direction of the circuit board 10 and the pin seat 2, and play a role in the rough positioning of the circuit board 10 and the pin 20 in the positioning hole 211, and the plurality of limiting blocks 221 are clamped on the side of the circuit board 10, so that the positioning hole 211 and the soldering pin hole 10a are aligned, and play a role in the fine positioning of the circuit board 10 and the pin 20 in the positioning hole 211. The plurality of limiting blocks 221 work together with the first limiting structure 4 and the second limiting structure 5 to achieve the precise positioning between the soldering pin hole 10a of the circuit board 10 and the pin 20 placed in the positioning hole 211, without repeated adjustment, and the operation is convenient and fast.

[0057] like Figure 2 As shown, the solder pin hole 10a is arranged in the middle of the circuit board 10, and around the outer periphery of the solder pin hole 10a, the side of the circuit board 10 has four notches, and the limit blocks 221 are set to 4, and are set corresponding to the four notches of the circuit board 10. When the circuit board 10 is placed on the gasket 3, the four notches of the circuit board 10 are respectively clamped on the inner side of the limit blocks 221, so that the position of the solder pin hole 10a on the circuit board 10 is accurately limited above the positioning hole 211.

[0058] Specifically, the number and position of the limit blocks 221 depend on the shape of the circuit board 10 and the arrangement position of the solder pin holes 10a on the circuit board 10, as long as they can make the positioning holes 211 face the solder pin holes 10a.

[0059] In some embodiments, see Figures 1 to 3 The second limiting structure 5 includes two groups of positioning bolts 51, which are respectively threadedly connected to different positions on the top of the bottom plate 1. One group of positioning bolts 51 is arranged on the side of the gasket 3 away from the accommodating cavity 11, and the other group of positioning bolts 51 is arranged close to the accommodating cavity 11. The positioning bolts 51 are used to limit the placement direction of the circuit board 10 at two different positions, which has a simple structure and easy to obtain materials.

[0060] Specifically, the location of the positioning bolt 51 depends on the specific structure of the circuit board 10 .

[0061] In some embodiments, two groups of circuit positioning bolts 51 are arranged in two directions perpendicular to each other.

[0062] Exemplarily, each set of positioning bolts 51 may be provided with one, two, three or other numbers, preferably two.

[0063] Furthermore, the present application does not impose any specific limitation on the number of gaskets 3 provided, as long as they can support the circuit board 10 .

[0064] In some embodiments, Figure 1 and 2 As shown, two gaskets 3 are provided, and the two gaskets 3 are arranged oppositely on both sides of the accommodating cavity 11, and together form a horizontal supporting surface, so as to support the circuit board 10 on the horizontal surface, and it is not easy to deform when under pressure, further ensuring the welding effect.

[0065] It is understandable that the gasket 3 can also be provided as one, the gasket 3 is annular, and is arranged around the outer peripheral side of the accommodating cavity 11 to form a stable support for the circuit board 10. Alternatively, the gasket 3 can also be provided as three, four or other numbers.

[0066] Furthermore, the gasket 3 is an elastic layer to protect the circuit board 10 and prevent the circuit board 10 from being deformed.

[0067] Exemplarily, the gasket 3 is made of adhesive-backed silicone material and is attached to the upper surface of the bottom plate 1. The thickness of the gasket 3 can be set to 1-5 mm. In some embodiments, the thickness is 2.3 mm. It can be understood that the thickness of the gasket can also be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc., and can be set with reference to the size of the circuit board 10 and the pin 20.

[0068] Further, in some embodiments, see Figure 1 and Figure 4 The circuit board solder pin positioning tool also includes a clamping assembly 6, which is arranged on the base plate 1 and corresponds to the gasket 3, and is used to clamp the circuit board 10 on the gasket 3 to improve the stability of the position of the circuit board 10 and avoid displacement during subsequent welding, which may cause uneven welding or deformation of the circuit board 10.

[0069] Exemplarily, two gaskets 3 are arranged opposite to each other, and correspondingly, two groups of clamping assemblies 6 are arranged corresponding to each of the gaskets 3 to provide balanced clamping force on both sides of the circuit board 10 .

[0070] For details, see Figure 4 The clamping assembly 6 includes an adjusting member 61 and a pressing member 62. The pressing member 62 is adjustable in horizontal direction and is arranged on the adjusting member 61. The pressing member 62 is extended toward the gasket 3. The pressing member 62 is adjusted in horizontal direction to avoid components on the circuit board 10 to avoid damaging other components during clamping.

[0071] It should be noted that the horizontal direction refers to a direction perpendicular to the vertical direction.

[0072] For example, Figure 4As shown, the adjusting member 61 includes an adjusting arm and two nuts. The adjusting arm extends in the horizontal direction, and a U-shaped hole is provided on the adjusting arm, which vertically penetrates the adjusting arm and extends in the horizontal direction. The clamping member 62 includes a screw and a pressure head. The pressure head is arranged toward the gasket 3, and the screw passes through the U-shaped hole. The two nuts are respectively threadedly connected to the screw on the upper and lower sides of the adjusting arm, and the two nuts can clamp or loosen the adjusting arm. When the horizontal position of the clamping member 62 needs to be adjusted, the nuts are rotated to loosen the two nuts. At this time, the screw can slide freely along the extension direction of the U-shaped hole to adjust the horizontal position of the clamping member 62. When the adjustment is completed, the nuts are rotated to clamp the adjusting arm with the two nuts.

[0073] Exemplarily, the adjusting member 61 may further include a slider, which is sleeved on the U-shaped hole, the screw rod vertically penetrates the slider, and the two nuts are respectively located on the upper and lower sides of the slider.

[0074] Furthermore, in some embodiments, the clamping assembly 6 further includes a support 63 and a locking member 64, the support 63 is mounted on the bottom plate 1, the adjusting member 61 and the locking member 64 are both arranged on the support 63, and the locking member 64 is suitable for vertically locking or releasing the clamping member 62. The clamping assembly 6 configured in this way does not need to be manually clamped to achieve the clamping member 62, further improving the convenience of operation.

[0075] Exemplarily, the support 63 is bolted to the base plate 1 , or the support 63 may also be welded to the base plate 1 .

[0076] Exemplarily, the locking member 64 may be a hinge structure or a spring structure, as long as it can achieve the function of locking or releasing the pressing member 62, which will not be described in detail here.

[0077] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A circuit board soldering pin positioning tool, characterized in that: include: A bottom plate (1), wherein the bottom plate (1) is provided with a receiving cavity (11); A needle seat (2) is arranged in the accommodating cavity (11); the needle seat (2) is provided with a plurality of positioning holes (211) for placing the pin needles (20), and the plurality of positioning holes (211) are respectively arranged corresponding to the plurality of soldering pin holes (10a) of the circuit board (10); the positioning holes (211) are arranged to extend vertically, and the positioning holes (211) are suitable for allowing at least a part of the structure of the pin needle (20) to extend upward from the needle seat (2); At least one gasket (3) is provided on the bottom plate (1) and is located on the outer peripheral side of the accommodating cavity (11) to support the circuit board (10); the thickness of the gasket (3) is set to enable the pin (20) to be correspondingly inserted into the soldering pin hole (10a).

2. The circuit board soldering pin positioning tool according to claim 1, characterized in that: The circuit board soldering pin positioning tool further comprises a first limiting structure (4) and a second limiting structure (5); the first limiting structure (4) is arranged between the needle seat (2) and the inner cavity wall of the accommodating cavity (11) and is used to limit the installation direction of the needle seat (2) in the accommodating cavity (11); the second limiting structure (5) is arranged on the bottom plate (1) and is used to limit the placement direction of the circuit board (10) on the needle seat (2).

3. The circuit board soldering pin positioning tool according to claim 2, characterized in that: The accommodating cavity (11) is in the shape of a hole and comprises a large diameter section (111) and a small diameter section (112) connected to each other, and a step surface is formed between the large diameter section (111) and the small diameter section (112); The needle seat (2) comprises a needle insertion portion (21) and a support portion (22) arranged on the periphery of the needle insertion portion (21); the needle insertion portion (21) protrudes from the support portion (22) in the extension direction of the positioning hole (211) and is arranged corresponding to the small diameter section (112); the support portion (22) abuts against the step surface; the first limiting structure (4) is arranged between the needle insertion portion (21) and the small diameter section (112); and the positioning hole (211) is arranged on the needle insertion portion (21).

4. The circuit board soldering pin positioning tool according to claim 3, characterized in that: The first limiting structure (4) comprises a groove (41) and a protrusion which are arranged in a matching manner, and the groove (41) and the protrusion are respectively arranged correspondingly to the pin insertion portion (21) and the small-diameter section (112).

5. The circuit board soldering pin positioning tool according to claim 4, characterized in that: The support portion (22) is provided with a plurality of limit blocks (221) at intervals in the circumferential direction. The limit blocks (221) are located on one side of the positioning hole (211) and are extended upwards. The plurality of limit blocks (221) are suitable for limiting the position of the circuit board (10) so that the positioning hole (211) and the solder pin hole (10a) are directly opposite.

6. The circuit board soldering pin positioning tool according to claim 2, characterized in that: The second limiting structure (5) comprises two groups of positioning bolts (51), and the two groups of positioning bolts (51) are threadedly connected to the top of the base plate (1), one group of the positioning bolts (51) is arranged on a side of the gasket (3) away from the accommodating cavity (11), and the other group of the positioning bolts (51) is arranged close to the accommodating cavity (11).

7. The circuit board soldering pin positioning tool according to any one of claims 1 to 6, characterized in that: Two gaskets (3) are provided, and the two gaskets (3) are arranged oppositely on two sides of the accommodating cavity (11).

8. The circuit board soldering pin positioning tool according to any one of claims 1 to 6, characterized in that: The circuit board solder pin positioning tool also includes a clamping assembly (6), which is arranged on the base plate (1) and corresponds to the gasket (3) and is used to clamp and fix the circuit board (10) on the gasket (3).

9. The circuit board soldering pin positioning tool according to claim 8, characterized in that: The clamping assembly (6) comprises an adjusting member (61) and a pressing member (62); the pressing member (62) is arranged on the adjusting member (61) in an adjustable manner along the horizontal direction, and the pressing member (62) is extended toward the gasket (3).

10. The circuit board soldering pin positioning tool according to claim 9, characterized in that: The clamping assembly (6) further comprises a support (63) and a locking member (64); the support (63) is mounted on the base plate (1); the adjusting member (61) and the locking member (64) are both arranged on the support (63); and the locking member (64) is suitable for locking or releasing the clamping member (62) in the vertical direction.

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