Pin detection fixture and detection method thereof

Abstract

The present invention belongs to the field of detection technology, specifically relates to the measurement of linear dimensions, and in particular to a pin detection fixture and a detection method thereof; the present invention provides a pin detection fixture, comprising: a base, which is suitable for limiting a circuit board; a limiting plate, which is slidably arranged on the base and is suitable for abutting against the outer wall of the pin of the circuit board; a detection and correction component, which is slidably arranged on the limiting plate and is suitable for sliding between two pins; wherein, when the limiting plate moves toward the pin direction to abut, the detection and correction component moves horizontally to detect whether the spacing between the two pins is qualified; if the spacing between the two pins is less than the qualified value, the detection and correction component pushes the two pins to deform outward when moving; if the spacing between the two pins is qualified, the detection and correction component is suitable for pushing the pins to bend toward the limiting plate when resetting; through the cooperation of the limiting plate and the detection and correction component, it is possible to detect whether the spacing between the pins is qualified, and to correct the scraping glue with a smaller spacing.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and specifically relates to the measurement of linear dimensions, and in particular to a pin detection fixture and a detection method thereof. Background Art

[0002] During the assembly process of the switching power supply, the pins of the power circuit board need to be bent after assembly, and the size of the pins of the circuit board needs to be inspected and corrected to determine whether the product is qualified.

[0003] In the related art, two pins arranged opposite to each other tend to tilt towards each other, and the pins in this state will cause a short circuit in the circuit board during assembly. Conventional inspection jigs will judge such circuit boards as unqualified products, requiring manual secondary processing, which not only reduces the product yield, but also increases the workload of workers.

[0004] Therefore, how to solve the problem of pins of a circuit board bending toward each other is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a pin detection fixture and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a pin detection fixture, including:

[0008] A base, which is suitable for limiting the position of the circuit board;

[0009] A limit plate is slidably arranged on the base and is suitable for abutting against the outer wall of the pin of the circuit board;

[0010] A detection and correction component is slidably arranged on the limit plate and is suitable for sliding between two pins;

[0011] When the limit plate moves toward the pin until it abuts against the pin, the detection and correction component moves horizontally to detect whether the distance between the two pins is qualified;

[0012] If the distance between the two pins is less than the qualified value, the detection and correction component will move to push the two pins outward;

[0013] If the distance between the two pins is qualified, the detection and correction component is suitable for pushing the pins to bend in the direction of the limiting plate when it is reset and moved.

[0014] In an optional embodiment, a spring is provided between the bottom of the limit plate and the base, and the spring is suitable for pushing the limit plate to move toward the pin direction;

[0015] A limiting groove is provided in the middle of the limiting plate, and the linkage block of the detection and correction assembly is suitable for sliding in the limiting groove;

[0016] When the detection and correction assembly moves away from the pin, the linkage block abuts against the end wall of the limit groove to drive the limit plate to move synchronously;

[0017] When the end of the limiting plate abuts against the pin, the linkage block is suitable for moving relative to the limiting plate.

[0018] In an optional embodiment, two positioning grooves adapted to the pins are formed at the end of the limiting plate, and a sponge layer is provided on the side wall of the positioning groove, which is suitable for applying protective paint to the outer wall of the pin when the sponge layer abuts against the pin.

[0019] In an optional embodiment, the detection and correction assembly includes: a driving unit, which is arranged on the base;

[0020] A positioning plate, which is arranged at the movable end of the driving part and is parallel to the limiting plate;

[0021] Two detection plates, the two detection plates are respectively hinged on two sides of the positioning plate;

[0022] The linkage block is arranged on the bottom wall of the positioning plate;

[0023] Wherein, the positioning plate moves toward the circuit board, and when the detection plate abuts against the pins, the detection plate is adapted to flip toward the side wall of the positioning plate so that the positioning plate passes through the two pins;

[0024] If the distance between the two pins is qualified, the detection board will reset after passing over the two pins, and the detection board will move away from the circuit board to bend the pins;

[0025] If the distance between the two pins is less than the qualified value, when the detection board passes over the pins, the outer walls of the two detection boards push the two pins respectively to deform them outward.

[0026] In an optional embodiment, two accommodating cavities are provided in the positioning plate, and one accommodating cavity corresponds to one detection plate;

[0027] An adjusting block is slidably disposed on both side walls of the positioning plate, and the adjusting block is suitable for opening and closing the water outlet of the accommodating cavity;

[0028] When the detection plate squeezes the adjusting block and slides inward, the protective paint in the accommodating cavity drips downward.

[0029] In an optional embodiment, two gear bars are provided at one end of the positioning plate away from the driving part, and one gear bar corresponds to one detection plate;

[0030] Wherein, when the positioning plate is reset and moved, the stop bar is suitable for limiting the detection plate.

[0031] In an optional embodiment, a top block is provided on the base for lifting and lowering near the limiting plate, the top block is provided below the circuit board, a return spring is provided on the bottom wall of the top block, and the return spring is suitable for pushing the top block to move upward.

[0032] In an optional embodiment, a squeezing block is disposed on the bottom wall of the limiting plate, the squeezing block is matched with the top block, and the squeezing block is suitable for squeezing the top block to move downward so that the circuit board is placed horizontally on the base.

[0033] In an optional embodiment, a detection fixture is provided, comprising:

[0034] A limiting plate is slidably arranged above the circuit board and is suitable for abutting against the outer wall of the pins of the circuit board;

[0035] A detection and correction component is slidably arranged on the limit plate and is suitable for sliding between two pins;

[0036] The detection and correction assembly comprises: a driving unit, which is arranged on the base;

[0037] A positioning plate, which is arranged at the movable end of the driving part and is parallel to the limiting plate;

[0038] Two detection plates, the two detection plates are respectively hinged on two sides of the positioning plate;

[0039] The linkage block is arranged on the bottom wall of the positioning plate;

[0040] Wherein, the positioning plate moves toward the circuit board, and when the detection plate abuts against the pins, the detection plate is adapted to flip toward the side wall of the positioning plate so that the positioning plate passes through the two pins;

[0041] If the distance between the two pins is qualified, the detection board will reset after passing over the two pins, and the detection board will move away from the circuit board to bend the pins;

[0042] If the distance between the two pins is less than the qualified value, when the detection board passes over the pins, the outer walls of the two detection boards push the two pins respectively to deform them outward.

[0043] In an optional embodiment, two accommodating cavities are provided in the positioning plate, and one accommodating cavity corresponds to one detection plate;

[0044] An adjusting block is slidably disposed on both side walls of the positioning plate, and the adjusting block is suitable for opening and closing the water outlet of the accommodating cavity;

[0045] When the detection plate squeezes the adjusting block and slides inward, the protective paint in the accommodating cavity drips downward.

[0046] In an optional embodiment, two gear bars are provided at one end of the positioning plate away from the driving part, and one gear bar corresponds to one detection plate;

[0047] Wherein, when the positioning plate is reset and moved, the stop bar is suitable for limiting the detection plate.

[0048] In a second aspect, the present disclosure also provides a detection method, the detection method comprising:

[0049] After the circuit board is placed on the base, when the limit plate moves toward the pin direction until it abuts, the detection and correction component moves horizontally to detect whether the spacing between the two pins is qualified;

[0050] If the distance between the two pins is less than the qualified value, the detection and correction component will move to push the two pins outward;

[0051] If the distance between the two pins is qualified, the detection and correction component is suitable for pushing the pins to bend in the direction of the limiting plate when it is reset and moved.

[0052] The beneficial effect of the present invention is that a pin detection fixture and a detection method thereof of the present invention, through the cooperation of a limit plate and a detection and correction component, realize the detection of whether the spacing between two relatively arranged pins of a circuit board is qualified. If the pin spacing is qualified, the detection board can bend the two pins in the same direction during the resetting movement; if the pin spacing is less than the qualified value, it is determined that the two pins are tilted toward each other, and the detection board is suitable for pushing the pins to flip outward during the process of flipping toward the positioning plate. After the spacing between the two pins is qualified, the detection board can bend the two pins in the same direction during the resetting movement.

[0053] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0054] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 A three-dimensional diagram of a pin detection fixture provided in an embodiment of the present disclosure;

[0057] Figure 2 A stereoscopic diagram of a limit plate and a detection and correction assembly is provided for an embodiment of the present disclosure;

[0058] Figure 3 A sectional stereogram of a limit plate and a detection and correction assembly provided in an embodiment of the present disclosure;

[0059] Figure 4 A cutaway perspective view of a base provided for an embodiment of the present disclosure;

[0060] Figure 5 A schematic diagram of a state in which a detection plate provided in an embodiment of the present disclosure is pushed by a pin and flipped toward a positioning plate;

[0061] Figure 6 A schematic diagram of a vertical state of two pins provided in an embodiment of the present disclosure;

[0062] Figure 7 This is a schematic diagram of the two pins tilted towards each other provided in an embodiment of the present disclosure.

[0063] In the figure:

[0064] 1. Base; 11. Top block; 12. Spring;

[0065] 2. Limiting plate; 20. Limiting groove; 21. Positioning groove; 210. Sponge layer; 22. Accommodating cavity; 23. Adjusting block; 24. Extrusion block;

[0066] 3. Detection and correction assembly; 31. Driving unit; 32. Positioning plate; 33. Detection plate; 34. Linkage block; 35. Gear bar;

[0067] 4. Circuit board; 40. Pins. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0070] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0071] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0072] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0073] After research, it was found that the disadvantages of the prior art are as follows: the pins of the semiconductor circuit board need to be bent after packaging, and the size of the pins of the circuit board needs to be inspected and corrected to determine whether the product is qualified.

[0074] In the related art, two pins that are arranged opposite to each other tend to tilt towards each other, and the pins in this state will cause a short circuit in the circuit board during assembly. Conventional inspection jigs will judge such circuit boards as unqualified products, requiring manual secondary processing, which not only reduces the product yield, but also increases the workload of workers.

[0075] Therefore, how to solve the problem of pin bending of a circuit board is a technical problem that urgently needs to be solved in this field.

[0076] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0077] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0078] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0079] like Figures 1 to 7As shown, some embodiments provide a pin detection fixture, including: a base 1, which is suitable for limiting the position of a circuit board 4; a placement groove is provided on the base 1, and the circuit board 4 is suitable for being placed horizontally in the placement groove. A fixed block is provided on the side of the base 1 away from the limiting plate 2, and the fixed block is arranged above the placement groove. After the circuit board 4 is horizontally placed in the placement groove, the fixed block is suitable for limiting the position of the circuit board 4, and the limiting plate 2 is arranged above the placement groove; the limiting plate 2 is slidably arranged on the base 1 and is suitable for abutting against the outer wall of the pin 40 of the circuit board 4; when the detection and correction component 3 does not move toward the circuit board 4, the limiting plate 2 is limited by the linkage block 34. The detection and correction component 3 is slidably arranged on the limiting plate 2 and is suitable for sliding between the two pins 40; when the spacing between the two pins 40 is qualified, when the detection and correction component 3 slides horizontally along the upper surface of the circuit board 4 and passes through the two pins 40, the detection plate 33 flips toward the positioning plate 32, so that the protective paint in the accommodating cavity 22 drips toward the pin 40. Preferably, the protective paint described in the present invention is a three-proof paint. Among them, when the limit plate 2 moves to the direction of the pin 40 to abut, the detection and correction component 3 moves horizontally to detect whether the spacing between the two pins 40 is qualified; when the spacing between the two pins 40 is less than the qualified value, the detection and correction component 3 moves to push the two pins 40 to change shape; when the spacing between the two pins 40 is qualified, the detection and correction component 3 is suitable for pushing the pins 40 to bend in the direction of the limit plate 2 when resetting. Through the cooperation of the limit plate 2 and the detection and correction component 3, it is realized to detect whether the spacing between the two pins 40 relatively set on the circuit board 4 is qualified. If the spacing between the pins 40 is qualified, the detection board 33 can bend the two pins 40 in the same direction during the resetting movement; if the spacing between the pins 40 is less than the qualified value, it is determined that the two pins 40 are inclined toward each other, and the detection board 33 is suitable for pushing the pins 40 to flip outward during the flipping process toward the positioning plate 32. After the spacing between the two pins 40 is qualified, the detection board 33 can bend the two pins 40 in the same direction during the resetting movement.

[0080] Reference Figure 3 , a spring is arranged between the bottom of the limit plate 2 and the base 1, and the spring is suitable for pushing the limit plate 2 to move in the direction of the pin 40; a limit groove 20 is arranged in the middle of the limit plate 2, and the linkage block 34 of the detection and correction component 3 is suitable for sliding in the limit groove 20; wherein, when the detection and correction component 3 moves away from the pin 40, the linkage block 34 abuts against the end wall of the limit groove 20 to drive the limit plate 2 to move synchronously; the linkage block 34 abuts against the end wall of the limit groove 20 away from the circuit board 4 to prevent the spring from pushing the limit plate 2 to move in the direction of the circuit board 4. When the end of the limit plate 2 abuts against the pin 40, the linkage block 34 is suitable for moving relative to the limit plate 2.

[0081] Reference Figure 2The end of the limit plate 2 is provided with two positioning grooves 21 adapted to the pin 40. The side wall of the positioning groove 21 is provided with a sponge layer. When the sponge layer abuts against the pin 40, it is suitable for applying protective paint to the outer wall of the pin 40. The limit plate 2 moves toward the circuit board 4 until the pin 40 abuts against the sponge layer on the inner wall of the positioning groove 21. At this time, the limit plate 2 is limited by the pin 40, and the positioning plate 32 continues to move toward the circuit board 4 relative to the limit plate 2 until the detection plate 33 is squeezed and turned over by the pin 40. The detection plate 33 squeezes the adjustment block 23, so that the three-proof paint in the receiving groove drips and flows toward the outer wall of the pin 40.

[0082] Continue to refer to the attached Figure 2 The detection and correction assembly 3 includes: a driving part 31, which is arranged on the base 1; a positioning plate 32, which is arranged at the movable end of the driving part 31 and is parallel to the limit plate 2; the driving part 31 is suitable for driving the positioning plate 32 to move horizontally, and the limit plate 2 is suitable for pushing the limit plate 2 to move when it moves horizontally. Two detection plates 33, the two detection plates 33 are respectively hinged on both sides of the positioning plate 32; when the positioning plate 32 does not move between the two pins 40, the detection plate 33 and the positioning plate 32 are in a mutually perpendicular state. The linkage block 34 is arranged on the bottom wall of the positioning plate 32; wherein, the positioning plate 32 moves toward the circuit board 4, and when the detection plate 33 abuts against the pin 40, the detection plate 33 is suitable for flipping toward the side wall of the positioning plate 32 to allow the positioning plate 32 to pass through the two pins 40; if the distance between the two pins 40 is qualified, the detection plate 33 resets after passing over the two pins 40, and the detection plate 33 moves away from the circuit board 4 to bend the pin 40; if the distance between the two pins 40 is less than the qualified value, during the process of the detection plate 33 passing over the pin 40, the outer walls of the two detection plates 33 push the two pins 40 respectively, causing them to deform outward.

[0083] Reference Figure 5 In order to facilitate the detection plate 33 to flip toward the positioning plate 32, the two side walls of the positioning plate 32 close to the detection plate 33 are respectively provided with grooves. When the detection plate 33 flips toward the positioning plate 32 with the hinge point as the axis, the detection plate 33 shrinks in the groove. At this time, the distance between the outermost walls of the two detection plates 33 is not greater than the distance between the two pins 40 of the circuit board 4.

[0084] Reference Figure 6 , that is, if the pins 40 are vertically arranged on the circuit board 4, the distance between the two pins 40 is recorded as A1. At this time, when the two positioning plates 32 pass through the two pins 40, the pins 40 push the detection plate 33 to flip in the direction of the positioning plate 32 with the hinge point as the axis, until the inner wall of the detection plate 33 abuts against the outer wall of the positioning plate 32. At this time, the distance between the outer walls of the two detection plates 33 is recorded as A3, and A1≥A3. At this time, the outer walls of the two detection plates 33 only fit the outer walls of the two pins 40, and the detection plates 33 will not push the pins 40 to bend.

[0085] Reference Figure 5 and Figure 7 , and when the two pins 40 are tilted toward each other, the distance between the two pins 40 is recorded as A2, and A3>A2. When the positioning plate 32 passes through the two pins 40, the pins 40 push the detection plate 33 to flip in the direction of the positioning plate 32 with the hinge point as the axis, until the inner wall of the detection plate 33 abuts against the outer wall of the positioning plate 32. At this time, the outer walls of the two detection plates 33 abut against the outer walls of the two pins 40. When the positioning plate 32 continues to move toward the circuit board 4, the two detection plates 33 are suitable for pushing the corresponding pins 40, so that they bend from the tilted state to the vertical state, until the distance between the two pins 40 is equal to the distance in the qualified state.

[0086] Reference Figure 2 , two accommodating chambers 22 are provided in the positioning plate 32, and three-proof paint is stored in the accommodating chamber 22. One accommodating chamber 22 corresponds to one detection plate 33; an adjusting block 23 is slidably provided on both side walls of the positioning plate 32, and the adjusting block 23 is suitable for opening and closing the water outlet of the accommodating chamber 22; when the adjusting block 23 is pushed to move into the accommodating chamber 22, the water outlet of the accommodating chamber 22 is opened, and the three-proof paint in the accommodating chamber 22 is suitable for dripping downward. Preferably, a collecting groove is provided on the limiting plate 2, one end of the collecting groove is arranged below the accommodating chamber 22, and the other end of the collecting groove extends to the sponge layer. After the water outlet of the accommodating chamber 22 is opened, the three-proof paint is suitable for flowing to the sponge layer along the collecting groove, so that the three-proof paint is wrapped around the outer wall of the pin 40. Among them, when the detection plate 33 squeezes the adjusting block 23 to slide inward, the protective paint in the accommodating chamber 22 drips downward.

[0087] Reference Figure 3 The end of the positioning plate 32 away from the driving part 31 is provided with two stop bars 35, one stop bar 35 corresponds to one detection plate 33; wherein, when the positioning plate 32 is reset and moved, the stop bar 35 is suitable for limiting the detection plate 33. The stop bar 35 is provided so that when the positioning plate 32 moves in a direction away from the pin 40, the stop bar 35 is suitable for blocking the detection plate 33 to prevent it from turning over in the direction of the circuit board 4. As the positioning plate 32 continues to move, the detection plate 33 is suitable for bending the pin 40 to bend it in the direction of the driving part 31.

[0088] Reference Figure 4, the base 1 is provided with a top block 11 near the limit plate 2 for lifting and lowering, the top block 11 is provided below the circuit board 4, and one side of the top block 11 protrudes from the side wall of the circuit board 4; the bottom wall of the top block 11 is provided with a reset spring, and the reset spring is suitable for pushing the top block 11 to move upward. The bottom wall of the limit plate 2 is provided with an extrusion block 24, and the extrusion block 24 is adapted to the top block 11, and the extrusion block 24 is suitable for extruding the top block 11 to move downward, so that the circuit board 4 is placed horizontally on the base 1. When the circuit board 4 is placed on the base 1, the horizontal height of one end of the circuit board 4 close to the limit plate 2 is greater than the other end; as the limit plate 2 moves toward the circuit board 4, the extrusion block 24 is suitable for pushing the top block 11 to shrink downward, so that the circuit board 4 is in a horizontal state. When the pins 40 on the circuit board 4 are bent, the limit plate 2 moves in a direction away from the circuit board 4, and the top block 11 is suitable for pushing the circuit board 4 to move upward, so that the circuit board 4 can be separated from the base 1.

[0089] Some embodiments provide a detection fixture, including: a limit plate 2, which is slidably arranged above the circuit board 4 and is suitable for abutting against the outer wall of the pin 40 of the circuit board 4; a detection and correction component 3, which is slidably arranged on the limit plate 2 and is suitable for sliding between the two pins 40; the detection and correction component 3 includes: a driving part 31, which is arranged on the base 1; a positioning plate 32, which is arranged at the active end of the driving part 31 and is parallel to the limit plate 2; two detection plates 33, the two detection plates 33 are respectively hinged on both sides of the positioning plate 32; the linkage block 34 is arranged On the bottom wall of the positioning plate 32; wherein, the positioning plate 32 moves toward the circuit board 4, and when the detection plate 33 abuts against the pin 40, the detection plate 33 is suitable for flipping toward the side wall of the positioning plate 32 to allow the positioning plate 32 to pass through the two pins 40; if the distance between the two pins 40 is qualified, the detection plate 33 returns to its original position after passing over the two pins 40, and the detection plate 33 moves away from the circuit board 4 to bend the pin 40; if the distance between the two pins 40 is less than the qualified value, during the process of the detection plate 33 passing over the pin 40, the outer walls of the two detection plates 33 push the two pins 40 respectively, causing them to deform outward.

[0090] Furthermore, two accommodating cavities 22 are provided in the positioning plate 32, and one accommodating cavity 22 corresponds to one detection plate 33; an adjusting block 23 is slidably provided on both side walls of the positioning plate 32, and the adjusting block 23 is suitable for opening and closing the water outlet of the accommodating cavity 22; wherein, when the detection plate 33 squeezes the adjusting block 23 and slides inward, the protective paint in the accommodating cavity 22 drips downward.

[0091] Furthermore, two stop bars 35 are provided at one end of the positioning plate 32 away from the driving part 31 , and one stop bar 35 corresponds to one detection plate 33 ; wherein, when the positioning plate 32 is reset and moved, the stop bar 35 is suitable for limiting the detection plate 33 .

[0092] Some embodiments provide a detection method, which includes: after the circuit board 4 is placed on the base 1, when the limit plate 2 moves toward the pin 40 until it abuts, the detection and correction component 3 moves horizontally to detect whether the distance between the two pins 40 is qualified; if the distance between the two pins 40 is less than the qualified value, the detection and correction component 3 pushes the two pins 40 to deform toward the outer shape when it moves; if the distance between the two pins 40 is qualified, the detection and correction component 3 is suitable for pushing the pin 40 to bend toward the limit plate 2 when it resets.

[0093] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0095] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pin detection fixture, characterized in that: include: A base (1) suitable for positioning a circuit board; A limit plate (2) which is slidably disposed on the base (1) and is suitable for abutting against the outer wall of the pin of the circuit board; A detection and correction component (3), which is slidably arranged on the limit plate (2) and is suitable for sliding between the two pins; When the limit plate (2) moves toward the pin until it abuts against the pin, the detection and correction component (3) moves horizontally to detect whether the distance between the two pins is qualified; If the distance between the two pins is less than the qualified value, the detection and correction component (3) pushes the two pins to deform outward when moving; If the distance between the two pins is qualified, the detection and correction component (3) is adapted to push the pins to bend in the direction of the limit plate (2) when it is reset and moved; The detection and correction component (3) comprises: a driving unit (31) which is arranged on the base (1); A positioning plate (32) disposed at the movable end of the driving portion (31) and parallel to the limiting plate (2); Two detection plates (33), the two detection plates (33) being hinged on two sides of the positioning plate (32) respectively; A linkage block (34) disposed on the bottom wall of the positioning plate (32); The positioning plate (32) moves towards the circuit board until the detection plate (33) contacts the pins, and the detection plate (33) is adapted to flip towards the side wall of the positioning plate (32) so that the positioning plate (32) passes through the two pins; If the distance between the two pins is qualified, the detection plate (33) is reset after passing over the two pins, and the detection plate (33) moves in a direction away from the circuit board to bend the pins; If the distance between the two pins is less than the qualified value, when the detection plate (33) passes over the pins, the outer walls of the two detection plates (33) respectively push the two pins to deform outward; A spring is provided between the bottom of the limiting plate (2) and the base (1), and the spring is suitable for pushing the limiting plate (2) to move in the direction of the pin; A limiting groove (20) is provided in the middle of the limiting plate (2), and the linkage block (34) of the detection and correction component (3) is suitable for sliding in the limiting groove (20); When the detection and correction component (3) moves in a direction away from the pin, the linkage block (34) abuts against the end wall of the limit groove (20) to drive the limit plate (2) to move synchronously; When the end of the limiting plate (2) abuts against the pin, the linkage block (34) is suitable for moving relative to the limiting plate (2).

2. The pin detection fixture according to claim 1, characterized in that: The end of the limiting plate (2) is provided with two positioning grooves (21) adapted to the pins, and the side walls of the positioning grooves (21) are provided with a sponge layer, which is suitable for applying protective paint to the outer wall of the pin when the sponge layer abuts against the pin.

3. The pin detection fixture according to claim 1, characterized in that: Two accommodating cavities (22) are provided in the positioning plate (32), and one accommodating cavity (22) corresponds to one detection plate (33); An adjusting block (23) is slidably provided on both side walls of the positioning plate (32), respectively, and the adjusting block (23) is suitable for opening and closing the water outlet of the accommodating cavity (22); When the detection plate (33) squeezes the adjustment block (23) and slides inward, the protective paint in the accommodating cavity (22) drips downward.

4. The pin detection fixture according to claim 1, characterized in that: Two gear bars (35) are provided at one end of the positioning plate (32) away from the driving portion (31), and one gear bar (35) corresponds to one detection plate (33); Wherein, when the positioning plate (32) is reset and moved, the stop bar (35) is suitable for the limit detection plate (33).

5. The pin detection fixture according to claim 1, characterized in that: A top block (11) is provided on the base (1) near the limit plate (2) for lifting and lowering, the top block (11) being arranged below the circuit board, and a return spring is provided on the bottom wall of the top block (11), the return spring being suitable for pushing the top block (11) to move upward.

6. The pin detection fixture as claimed in claim 5, characterized in that: The bottom wall of the limiting plate (2) is provided with an extrusion block (24), the extrusion block (24) being matched with the top block (11), and the extrusion block (24) being suitable for extruding the top block (11) to move downwards, so that the circuit board is placed horizontally on the base (1).

7. A detection fixture, characterized in that: include: A limit plate (2) which is slidably arranged above the circuit board and is suitable for abutting against an outer wall of a pin of the circuit board; A detection and correction component (3), which is slidably arranged on the limit plate (2) and is suitable for sliding between the two pins; The detection and correction component (3) comprises: a driving unit (31) which is arranged on the base (1); A positioning plate (32) disposed at the movable end of the driving portion (31) and parallel to the limiting plate (2); Two detection plates (33), the two detection plates (33) being hinged on two sides of the positioning plate (32) respectively; The linkage block (34) is arranged on the bottom wall of the positioning plate (32); a limiting groove (20) is provided in the middle of the limiting plate (2); the linkage block (34) abuts against the end wall of the limiting groove (20) to drive the limiting plate (2) to move synchronously; The positioning plate (32) moves towards the circuit board until the detection plate (33) contacts the pins, and the detection plate (33) is adapted to flip towards the side wall of the positioning plate (32) so that the positioning plate (32) passes through the two pins; If the distance between the two pins is qualified, the detection plate (33) is reset after passing over the two pins, and the detection plate (33) moves in a direction away from the circuit board to bend the pins; If the distance between the two pins is less than the qualified value, in the process of the detection plate (33) passing over the pins, the outer walls of the two detection plates (33) respectively push the two pins to deform outward.

8. The detection fixture according to claim 7, characterized in that: Two accommodating cavities (22) are provided in the positioning plate (32), and one accommodating cavity (22) corresponds to one detection plate (33); An adjusting block (23) is slidably provided on both side walls of the positioning plate (32), respectively, and the adjusting block (23) is suitable for opening and closing the water outlet of the accommodating cavity (22); When the detection plate (33) squeezes the adjustment block (23) and slides inward, the protective paint in the accommodating cavity (22) drips downward.

9. The detection fixture according to claim 8, characterized in that: Two gear bars (35) are provided at one end of the positioning plate (32) away from the driving portion (31), and one gear bar (35) corresponds to one detection plate (33); Wherein, when the positioning plate (32) is reset and moved, the stop bar (35) is suitable for the limit detection plate (33).

10. A detection method, characterized in that: Using the pin detection fixture as described in any one of claims 1 to 6, the detection method includes: After the circuit board is placed on the base (1), when the limit plate (2) moves toward the pin direction until it abuts against the pin, the detection and correction component (3) moves horizontally to detect whether the spacing between the two pins is qualified; If the distance between the two pins is less than the qualified value, the detection and correction component (3) moves to push the two pins to deform outward; If the distance between the two pins is qualified, the detection and correction component (3) is suitable for pushing the pins to bend in the direction of the limit plate (2) when it is reset and moved.

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