Device for correcting perpendicularity of contact pin on circuit board

Abstract

The utility model provides a device for correcting perpendicularity of a pin on a circuit board. The device comprises a bottom plate, a pin correcting plate, a fixed column and an elastic component, a retention area is formed in the middle of the bottom plate, and a limiting mechanism is arranged in the retention area; a plurality of fixing columns with the same structure are distributed along the periphery of the retention area, are fixed on the bottom plate and then are matched with the pin correction plate; a plurality of elastic parts with the same structure are sleeved on the outer surface of the fixed column, and are positioned between the to-be-tested product in the retention area and the fixed column after abutting against the bottom plate; a correction part is formed in the middle of the pin correction plate and first through holes are formed around the pin correction plate; the correcting part is composed of a plurality of hollow straight pipes, so that the contact pin is in a vertical state; after the contact pin on the to-be-detected product in the retention area faces upwards, the contact pin correction plate is arranged over the to-be-detected product in a covering mode through the first through hole, then force is applied to the contact pin correction plate downwards, and the correction part of the contact pin correction plate is driven to be sleeved with the contact pin of the to-be-detected product for perpendicularity correction. According to the utility model, the bad pin can be corrected, so that the production and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic testing technology, and in particular to a device for correcting the perpendicularity of pins on a circuit board. Background Technology

[0002] Currently, most electronic devices use fisheye pin technology. During the insertion process, if the perpendicularity between the pin and the fisheye hole is mismatched (such as a slight deflection of the pin's vertical angle), strain deformation will occur. This deformation can tightly fill the drilled hole to form a gapless connection, thereby causing a short circuit problem.

[0003] To address the aforementioned issues, the angle of the pins is typically inspected after the FCT, aging, and EOL tests are completed during the pin manufacturing process. While this angle inspection method can screen out defective products, it cannot correct defective pins, leading to high production and maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a device for correcting the verticality of pins on a circuit board, which can correct defective pins and thereby reduce production and maintenance costs.

[0005] To address the aforementioned technical problems, embodiments of the present invention provide a device for correcting the perpendicularity of pins on a circuit board, used to correct pins on a product under test, comprising a base plate, a pin correction plate, a fixing post, and an elastic component; wherein...

[0006] The base plate has a retention area in the middle for placing the product under test as a whole with the pins of the product under test facing upwards, and a limiting mechanism is provided in the retention area to prevent the product under test from sliding.

[0007] There are multiple fixed posts with the same structure, and they are distributed around the retention area of ​​the base plate; wherein, one end of each fixed post is fixed to the base plate, and the other end cooperates with the pin correction plate.

[0008] The elastic components are multiple and have the same structure, and are sleeved on the outer surface of the corresponding fixed post; wherein, after each elastic component is sleeved on the outer surface of the corresponding fixed post, one end abuts against the base plate, and the other end is higher than the limiting mechanism in the retention area and the pin on the product to be tested and lower than the sleeved fixed post.

[0009] The center of the pin straightening plate has a straightening part for engaging with the pins of the product under test, and a plurality of first through holes for engaging with the fixing post are formed around its perimeter; wherein, the straightening part is composed of a plurality of hollow straight tubes, and each hollow straight tube engages with a pin so that the corresponding pin is in a vertical state; the area of ​​each first through hole is larger than the cross-sectional area of ​​the fixing post and smaller than the cross-sectional area of ​​the elastic component.

[0010] In this process, after the pins on the product to be tested in the retention area are facing upwards, the pin straightening plate is first inserted through the first through hole into the corresponding fixing post and abuts against the elastic component, so that the pin straightening plate covers the product to be tested directly above it. Then, force is applied to the pin straightening plate to compress all the elastic components downwards, and the straightening part of the pin straightening plate is gradually driven to fit into the pins of the product to be tested for verticality correction.

[0011] There are four limiting mechanisms with identical structures; the four limiting mechanisms are distributed at the four corners of the retention area of ​​the base plate.

[0012] The limiting mechanism is composed of interconnected first and second columns; wherein,

[0013] The end of the second column away from the first column is matched with a corresponding pre-set second through hole on the product under test, and its cross-sectional area is smaller than the area of ​​the corresponding pre-set second through hole on the product under test;

[0014] The end of the first column away from the second column is fixed in the retention area of ​​the base plate, and its cross-sectional area is larger than the area of ​​the second column that penetrates into the corresponding second through hole on the product to be tested.

[0015] When the pins on the product under test in the retention area are facing upwards, the second column of each limiting mechanism is inserted into the corresponding pre-set second through hole on the product under test, and the first column is abutted against the product under test.

[0016] There are four fixed posts and four elastic components; the four fixed posts are distributed at the four corners of the base plate.

[0017] The elastic component is a spring.

[0018] This also includes: at least one guide post; wherein,

[0019] One end of each guide post is fixed in the retention area of ​​the base plate, and the other end is engaged with the corresponding pre-set third through hole on the product to be tested and the corresponding pre-set fourth through hole on the pin correction plate.

[0020] The height between each guide post and the base plate is greater than or equal to the height between the fixed post and the base plate;

[0021] Specifically, when the pins on the product under test in the retention area are facing upwards and the pin correction plate is placed directly above the product under test, each guide post is inserted into the corresponding pre-set third through hole on the product under test and the corresponding pre-set fourth through hole on the pin correction plate.

[0022] In this case, the center of each third through hole on the product under test is on the same straight line as the center of the corresponding fourth through hole on the pin correction plate.

[0023] This also includes: two handles; among which,

[0024] The two handles are located on opposite sides of the base plate and outside the retention area of ​​the base plate.

[0025] The base plate, the limiting mechanism, the fixing column, the guide column, and the handle are all made of hard plastic.

[0026] Implementing the embodiments of the present invention has the following beneficial effects:

[0027] This invention uses an industrial robotic arm to place the product to be tested in the base plate retention area with the pins facing upwards. Then, the industrial robotic arm inserts the first through hole of the pin straightening plate into the fixing post and abuts against the elastic component (such as a spring), so that the pin straightening plate covers the product to be tested. The industrial robotic arm then applies force to the pin straightening plate to compress all the elastic components downwards, and gradually drives the straightening part of the pin straightening plate to fit into the pins of the product to be tested for verticality correction. This completes the verticality correction of defective pins, thereby reducing production and maintenance costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0029] Figure 1 This is a schematic diagram of the structure of the product under test during assembly in a device for correcting the verticality of pins on a circuit board, as provided in an embodiment of the present invention.

[0030] Figure 2 for Figure 1 Exploded view;

[0031] Figure 3This is a schematic diagram of the structure of a device for correcting the verticality of pins on a circuit board provided in an embodiment of the present invention, when the pin correction plate is not assembled.

[0032] Figure 4 This is a schematic diagram of the structure of the product under test in a device for correcting the verticality of pins on a circuit board, as provided in an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a device for correcting the perpendicularity of pins on a circuit board, used to correct pins J on a product M to be tested. The device includes a base plate 1, a pin correction plate 2, a fixing post 3, and an elastic component 4; wherein,

[0035] The base plate 1 is made of hard plastic, and a retention area 11 is formed in the middle for placing the product under test M as a whole with the pin J of the product under test M facing upward. A limiting mechanism 5 is provided in the retention area 11 to prevent the product under test M from sliding. It should be noted that the overall area of ​​the retention area 11 should be designed to be larger than the area of ​​the product under test M, so as to reserve the corresponding installation position for the subsequent fixing column 3 and elastic component 4.

[0036] There are multiple fixed posts 3, all made of hard plastic with the same structure (such as solid posts), and they are distributed around the retention area 11 of the base plate 1. This allows the product M to be tested to enter and exit the area surrounded by multiple fixed posts 3. One end of each fixed post 3 is fixed to the base plate 1 with adhesive, and the other end is engaged with the pin correction plate 2.

[0037] Multiple elastic components 4 (such as springs) with identical structures are fitted onto the outer surface of the corresponding fixed post 3. Each elastic component 4, after being fitted onto the outer surface of the corresponding fixed post 3, has one end abutting against the base plate 1, and the other end being higher than the limiting mechanism 5 in the retention area 11 and the pin J on the product to be tested M, but lower than the fitted fixed post 3. It is understood that each elastic component 4, after being fitted onto the outer surface of the corresponding fixed post 3, will have a certain distance from the retention area 11 of the base plate 1 to avoid collision or friction with the product to be tested M when it enters or exits.

[0038] The center of the pin straightening plate 2 has a straightening section (not shown) for engaging with the pins J of the product M to be tested, and multiple first through holes 21 are formed around its perimeter to engage with the fixing posts 3. The straightening section is composed of multiple hollow straight tubes (not shown, such as metal tubes with small apertures), and each hollow straight tube engages with a pin J to make the corresponding pin J vertical. The area of ​​each first through hole 22 is larger than the cross-sectional area of ​​the fixing post 3 and smaller than the cross-sectional area of ​​the elastic member 4. This not only prevents the pin straightening plate 2 from sliding directly to the bottom plate 11, but also allows the elastic member 4 to buffer the inertial gravity or external pressure of the pin straightening plate 2, thus preventing damage to the product M to be tested and its pins J during the straightening process.

[0039] In this process, after the pins J on the product M to be tested in the retention area 11 are facing upwards, the pin straightening plate 2 is first inserted through the first through hole 22 into the corresponding fixing post 3 and abuts against the elastic component 4, so that the pin straightening plate 2 covers the product M to be tested, which completes the pre-correction step. Then, force is applied to the pin straightening plate 2 to compress all the elastic components 4 downwards, and the straightening part of the pin straightening plate 2 is gradually driven into the pins J of the product M to be tested for verticality correction.

[0040] It should be noted that the movement of the product under test M and the movement of the pin straightening plate 2 are both accomplished by the corresponding industrial robotic arms. At this time, the pin J and the hollow straight tube of the straightening section are designed to match the actual situation. After the pin J enters the hollow straight tube of the straightening section, the verticality of the pin J is corrected by the vertical tube wall due to its movement along the tube wall.

[0041] In this embodiment of the invention, to improve the correction accuracy, the device also has at least one guide post 6 on the base plate 1, which can guide the correction part of the pin correction plate 2 to align with the pin J on the product M to be tested. Each guide post 6 is made of hard plastic, with one end fixed to the retention area 11 of the base plate 1 by adhesive, and the other end engaging with a corresponding pre-set third through hole m2 on the product M to be tested and a corresponding pre-set fourth through hole 23 on the pin correction plate 2. Therefore, when the pin J on the product M to be tested is facing upwards in the retention area 11, and the pin correction plate 2 is placed directly above the product M to be tested, each guide post 6 will penetrate into the corresponding pre-set third through hole m2 on the product M to be tested and the corresponding pre-set fourth through hole 23 on the pin correction plate 2. Therefore, the center of each third through hole m2 on the product M to be tested is on the same straight line as the center of the corresponding fourth through hole 23 on the pin correction plate 2.

[0042] Of course, after the guide post 6 is fixed, it is best if the height between it and the base plate 11 is greater than or equal to the height between the fixed post 3 and the base plate 11. This way, the pin straightening plate 2 and the product to be tested M can be aligned first, making it easier for the pin straightening plate 2 to enter the fixed post 3.

[0043] In this embodiment of the invention, for ease of handling, the device is also provided with two handles 7 on the base plate 1. Both handles 7 are made of hard plastic and are fixed to the opposite sides of the base plate 1 by adhesive and located outside the retention area 11 of the base plate 1.

[0044] In this embodiment of the invention, there are four limiting mechanisms 5, all made of hard plastic and having the same structure. These four limiting mechanisms 5 are distributed around the four corners of the retention area 11 of the base plate 1, thus restricting the sliding of the product M to be tested within the retention area 11. There are also four fixing posts 3 and four elastic components 4, with the four fixing posts 3 distributed around the four corners of the base plate 1.

[0045] At this time, the limiting mechanism 5 is composed of interconnected first column 51 and second column 52; the end of the second column 52 away from the first column 51 is engaged with the corresponding pre-set second through hole m1 on the product to be tested M, and its cross-sectional area is smaller than the area of ​​the corresponding pre-set second through hole m1 on the product to be tested M; the end of the first column 51 away from the second column 52 is fixed to the retention area 11 of the base plate 1 by adhesive, and its cross-sectional area is larger than the area of ​​the second column 52 that penetrates into the corresponding second through hole m1 on the product to be tested M; wherein, when the pin J on the product to be tested M in the retention area 11 is facing upward, the second column 52 of each limiting mechanism 5 penetrates into the corresponding pre-set second through hole m1 on the product to be tested M, and the first column 51 abuts against the product to be tested M.

[0046] The device for correcting the verticality of pins on a circuit board according to an embodiment of the present invention can correct the pins J on the product under test M after the product under test M has completed FCT, aging, and EOL tests. Of course, the device for correcting the verticality of pins on a circuit board according to an embodiment of the present invention can also correct the pins J on the product under test M again after each of the individual tests of FCT, aging, and EOL tests.

[0047] At this time, the working principle of the device for correcting the verticality of pins on a circuit board in this embodiment of the invention is as follows: First, confirm the completion of the preparatory work before correction, including confirming that the pin correction plate 2 is not installed on the base plate 1 and that the elastic component 4 is sleeved on the outer surface of the corresponding fixing post 3; Second, after confirming that the preparatory work is completed, move the product M to be tested to the base plate 1 above the base plate 1 by using an industrial robotic arm and adjust it so that the pin J of the product M to be tested is upward (i.e., the pin J is set in opposite directions to the base plate 1) and each second through hole m1 on the product M to be tested is aligned with the corresponding limiting mechanism 5 and each third through hole m2 is aligned with the corresponding guide post 6; Then, move the product M to be tested down by using an industrial robotic arm, into the guide post 6 and the limiting mechanism 5 until the product M to be tested is on the bottom. The needle straightening plate 2 is placed within the retention area 11 of plate 1. Next, the industrial robotic arm is released, and then the robotic arm moves the needle straightening plate 2 above the base plate 1 and adjusts it so that the straightening part of the needle straightening plate 2 faces downwards (i.e., the straightening part is oriented relative to the base plate 1), and the first through hole 22 of the needle straightening plate 2 aligns with the corresponding fixing post 3 and the fourth through hole 23 aligns with the corresponding guide post 6. Then, the industrial robotic arm lowers the needle straightening plate 2, placing it above the elastic member 3, through the guide post 6 and fixing post 3. Finally, the industrial robotic arm continues to move downwards, and the compression of the elastic member 4 reduces the downward force applied by the industrial robotic arm, gradually driving the straightening part of the needle straightening plate 2 to fit into the needle J of the product M to be tested for verticality correction. Of course, by repeatedly releasing and applying downward force with the industrial robotic arm, multiple corrections can be achieved.

[0048] Implementing the embodiments of the present invention has the following beneficial effects:

[0049] This invention uses an industrial robotic arm to place the product to be tested in the base plate retention area with the pins facing upwards. The robotic arm then inserts the first through hole of the pin straightening plate into the fixing post, which abuts against the elastic component (such as a spring). This allows the pin straightening plate to cover the product to be tested directly above it. The industrial robotic arm then applies force to compress all the elastic components downwards, gradually driving the straightening part of the pin straightening plate to fit onto the pins of the product to be tested for verticality correction. This completes the verticality correction of defective pins, thereby reducing production and maintenance costs.

[0050] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A device for correcting the perpendicularity of a pin on a circuit board, for correcting a pin on a product to be measured, characterized by, Includes a base plate, a pin straightening plate, fixing posts, and elastic components; among which, The base plate has a retention area in the middle for placing the product under test as a whole with the pins of the product under test facing upwards, and a limiting mechanism is provided in the retention area to prevent the product under test from sliding. There are multiple fixed posts with the same structure, and they are distributed around the retention area of ​​the base plate; wherein, one end of each fixed post is fixed to the base plate, and the other end cooperates with the pin correction plate. The elastic components are multiple and have the same structure, and are sleeved on the outer surface of the corresponding fixed post; wherein, after each elastic component is sleeved on the outer surface of the corresponding fixed post, one end abuts against the base plate, and the other end is higher than the limiting mechanism in the retention area and the pin on the product to be tested and lower than the sleeved fixed post. The center of the pin straightening plate has a straightening part for engaging with the pins of the product under test, and a plurality of first through holes for engaging with the fixing post are formed around its perimeter; wherein, the straightening part is composed of a plurality of hollow straight tubes, and each hollow straight tube engages with a pin so that the corresponding pin is in a vertical state; the area of ​​each first through hole is larger than the cross-sectional area of ​​the fixing post and smaller than the cross-sectional area of ​​the elastic component. In this process, after the pins on the product to be tested in the retention area are facing upwards, the pin straightening plate is first inserted through the first through hole into the corresponding fixing post and abuts against the elastic component, so that the pin straightening plate covers the product to be tested directly above it. Then, force is applied to the pin straightening plate to compress all the elastic components downwards, and the straightening part of the pin straightening plate is gradually driven to fit into the pins of the product to be tested for verticality correction.

2. The device for correcting the perpendicularity of the pins on the circuit board according to claim 1, wherein, There are four limiting mechanisms with identical structures; the four limiting mechanisms are distributed at the four corners of the retention area of ​​the base plate.

3. The device for correcting the perpendicularity of the pins on the circuit board as claimed in claim 2, wherein The limiting mechanism is composed of interconnected first and second columns; wherein... The end of the second column away from the first column is matched with a corresponding pre-set second through hole on the product under test, and its cross-sectional area is smaller than the area of ​​the corresponding pre-set second through hole on the product under test; The end of the first column away from the second column is fixed in the retention area of ​​the base plate, and its cross-sectional area is larger than the area of ​​the second column that penetrates into the corresponding second through hole on the product to be tested. When the pins on the product under test in the retention area are facing upwards, the second column of each limiting mechanism is inserted into the corresponding pre-set second through hole on the product under test, and the first column is abutted against the product under test.

4. The device for correcting the perpendicularity of pins on a circuit board as described in claim 3, characterized in that, There are four fixed posts and four elastic components; the four fixed posts are distributed at the four corners of the base plate.

5. The device for correcting the perpendicularity of pins on a circuit board as described in claim 4, characterized in that, The elastic component is a spring.

6. The apparatus for correcting the perpendicularity of pins on a circuit board as described in claim 5, characterized in that, Also includes: At least one guide post; wherein, One end of each guide post is fixed in the retention area of ​​the base plate, and the other end is engaged with the corresponding pre-set third through hole on the product to be tested and the corresponding pre-set fourth through hole on the pin correction plate. The height between each guide post and the base plate is greater than or equal to the height between the fixed post and the base plate; Specifically, when the pins on the product under test in the retention area are facing upwards and the pin correction plate is placed directly above the product under test, each guide post is inserted into the corresponding pre-set third through hole on the product under test and the corresponding pre-set fourth through hole on the pin correction plate.

7. The apparatus for correcting the perpendicularity of pins on a circuit board as described in claim 6, characterized in that, The center of each third through hole on the product under test is on the same straight line as the center of the corresponding fourth through hole on the pin correction plate.

8. The apparatus for correcting the perpendicularity of pins on a circuit board as described in claim 7, characterized in that, Also includes: Two handles; of which, The two handles are located on opposite sides of the base plate and outside the retention area of ​​the base plate.

9. The apparatus for correcting the perpendicularity of pins on a circuit board as described in claim 8, characterized in that, The base plate, the limiting mechanism, the fixing column, the guide column, and the handle are all made of hard plastic.

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