A solder joint detection device and a solder joint detection method

Abstract

The present invention belongs to the technical field of solder joint detection, and discloses a solder joint detection device and a detection method thereof, wherein the device comprises a housing, a first support plate and an X-ray detection component, and further comprises: an angle adjustment mechanism, comprising a driving component, a clamping component and a second groove wheel; a knocking mechanism, comprising a force adjustment component and a first groove wheel, wherein the first groove wheel penetrates the housing and is fixedly installed with a second round rod, a first cam is fixedly installed on the outer wall of the second round rod, a knocking rod is abutted against the outer wall of the first cam, and a first spring is installed on the outer wall of the knocking rod; the force adjustment component comprises a second cam, a ball is abutted against one side of the second cam, a second piston rod is rotatably installed on the outer wall of the ball, a piston cylinder is slidably installed on the outer wall of the second piston rod, a first piston rod is slidably installed on the outer wall of the piston cylinder, a second support plate is installed on the side of the first piston rod away from the piston cylinder, and the outer wall of the second support plate is fixedly connected to the first spring. The present invention solves the problem that the existing device cannot detect solder joints after vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of solder joint detection, and in particular to a solder joint detection device and a detection method thereof. Background Art

[0002] Electronic components are parts used in electronic devices or circuits to process, transmit and control electronic signals. During production, electronic components need to be soldered to connect them to circuit boards. The quality of solder joints is closely related to the performance and reliability of the product. Electronic component solder joint inspection is a key link in ensuring the quality of electronic products before they leave the factory.

[0003] The Chinese patent disclosed "An electronic component detection device and detection method thereof" with application number 202311394563.9. The device includes a body with an open lower end and a moving component and a supporting component installed inside the body. Hidden limit components are installed on the inner walls on both sides of the lower end of the body.

[0004] Although the device can detect electronic components at different angles, it can only detect when the electronic components are static. Since electronic components may encounter bumps or drops during transportation or actual use, the impact force on the electronic components will affect the solder joints to a certain extent. The device cannot simulate this situation, so it is impossible to fully evaluate the reliability and stability of the solder joints. Summary of the invention

[0005] The purpose of the present invention is to provide a welding spot detection device and a detection method thereof, which solves the problem that the existing device cannot detect the welding spot after vibration.

[0006] To achieve the above object, the present invention provides the following technical solution: a welding spot detection device, comprising a housing, a first support plate located above the housing, and an X-ray detection component located above the first support plate, and further comprising:

[0007] The angle adjustment mechanism includes a driving assembly, a clamping assembly, and a second groove wheel symmetrically mounted on the housing; when the clamping assembly clamps the electronic component, the driving assembly intermittently drives the second groove wheel to rotate, and the electronic component rotates under the X-ray detection assembly;

[0008] The knocking mechanism comprises a force adjustment component and a first groove wheel symmetrically rotatably mounted on the housing, a second round rod is fixedly mounted on one side of the first groove wheel penetrating the housing, a first cam is fixedly mounted on the outer wall of the second round rod, a knocking rod is abutted against the outer wall of the first cam, and a first spring is mounted on the outer wall of the knocking rod; after the second groove wheel rotates one circle, the first groove wheel drives the first cam to rotate through the second round rod, and the first cam no longer squeezes the knocking rod, at which time the first spring stretches out to drive the knocking rod to knock the clamping component, and then the force adjustment component adjusts the pressure of the first spring;

[0009] The force adjustment component includes a second cam installed on the outer wall of the second round rod, a ball bearing is abutted on one side of the second cam, a second piston rod is rotatably installed on the outer wall of the ball bearing, a piston cylinder is slidably installed on the outer wall of the second piston rod, a first piston rod is slidably installed on the outer wall of the piston cylinder, a second support plate is installed on the side of the first piston rod away from the piston cylinder, and the outer wall of the second support plate is fixedly connected to the first spring.

[0010] Preferably, the driving assembly includes a support seat, the lower end surface of the support seat is installed on the bottom wall of the outer shell, the upper end surface of the support seat is installed with a dual-axis motor, the output axis of the dual-axis motor is symmetrically installed with a first round rod, a positioning plate is installed on the side of the first round rod that passes through the outer shell away from the dual-axis motor, a connecting rod is installed on the side of the positioning plate away from the outer shell, and a round pin is installed on the connecting rod facing the outer shell.

[0011] Preferably, the clamping assembly includes two electric telescopic rods, the two electric telescopic rods penetrate the housing and are fixedly connected to the second groove wheel, and a clamp is installed on one side of the electric telescopic rod away from the second groove wheel.

[0012] Preferably, a sliding groove is provided on the outer wall of the knocking rod, a second fixed block is slidably installed on the inner wall of the sliding groove, a third fixed block is slidably installed on the lower end surface of the knocking rod, the third fixed block is fixedly installed on the inner wall of the outer shell, and a first fixed block is symmetrically slidably installed on the upper end surface of the knocking rod, and the first fixed block is fixedly installed on the inner wall of the outer shell.

[0013] Preferably, the upper end surface of the third fixing block is fixedly connected to the second fixing block.

[0014] Preferably, a pressure relief valve is installed on the upper end surface of the piston cylinder.

[0015] Preferably, a first one-way valve and a second one-way valve are installed on the inner wall of the piston cylinder.

[0016] Preferably, a second spring is sleeved on the outer wall of the second piston rod, one side of the second spring is mounted on the piston cylinder, a retaining ring is mounted on the side of the second spring away from the piston cylinder, and the retaining ring is fixedly mounted on the outer wall of the second piston rod.

[0017] Preferably, the solder joint detection method comprises the following steps:

[0018] Step 1: The electronic component is clamped by the clamping assembly, and then the driving assembly drives the second groove wheel and the first groove wheel to rotate intermittently in sequence. The second groove wheel drives the electronic component on the clamping assembly to rotate intermittently under the X-ray detection assembly to complete multi-angle detection of the welding point;

[0019] Step 2: As the second groove wheel rotates, when the second groove wheel completes one rotation, the electronic component also rotates one rotation, and the X-ray detection assembly completes all detection. At the same time, the driving assembly continues to drive the first groove wheel, and the first groove wheel drives the first cam and the second cam to rotate through the second round rod. The first cam no longer squeezes the knocking rod. At this time, the first spring stretches out to drive the knocking rod to knock the clamping assembly, causing the electronic component to vibrate, and then the second groove wheel continues to rotate intermittently to detect the solder joints on the surface of the electronic component after vibration;

[0020] Step 3: After the knocking rod completes knocking on the clamping assembly, the first groove wheel drives the second cam to squeeze the second piston rod, the second piston rod squeezes the gas in the piston cylinder, the gas squeezes the first piston rod, and the first piston rod drives the second support plate to squeeze the first spring. Changing the pressure of the first spring can enable the first spring to drive the knocking rod to knock on the clamping assembly with different forces, so that the impact force on the electronic components gradually increases, thereby completing a comprehensive inspection of the solder joints.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention is provided with an angle adjustment mechanism, the connecting rod drives the round pin to rotate, and the round pin drives the electronic component to rotate intermittently for one circle under the X-ray detection assembly through the second groove wheel, thereby completing the detection of welding points at different angles;

[0023] Second, the present invention is provided with a knocking mechanism. When the first cam no longer squeezes the knocking rod, the first spring stretches out, driving the knocking rod to knock the electric telescopic rod. The impact force on the electric telescopic rod causes the clamp to drive the electronic component to vibrate, and then the second groove wheel continues to rotate intermittently, driving the vibrated electronic component to rotate intermittently again under the X-ray detection component for one circle, so as to detect the welding point after vibration;

[0024] 3. The present invention is provided with a force adjustment component. Each time the second cam squeezes the ball, the ball will drive the second piston rod to move to one side of the piston cylinder and compress the second spring through the retaining ring. At this time, the second one-way valve is closed and the first one-way valve is opened. The gas in the piston cylinder will push the first piston rod outward, and the first piston rod will drive the second support plate to move. The second support plate compresses the first spring, thereby gradually increasing the pressure on the first spring. When the first cam no longer squeezes the knocking rod, the first spring can drive the knocking rod to knock the electric telescopic rod, so that the impact force on the electronic components gradually increases, thereby completing the detection of solder joints under different impact forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the interior of the housing of the present invention;

[0029] Figure 5 for Figure 4 Schematic diagram from another perspective;

[0030] Figure 6 It is a cross-sectional view of the piston cylinder of the present invention.

[0031] In the figure: 1. shell; 2. first groove wheel; 3. connecting rod; 4. second groove wheel; 5. control panel; 6. electronic component; 7. clamp; 8. electric telescopic rod; 9. first support plate; 10. X-ray detection component; 11. first fixed block; 12. slide groove; 13. second fixed block; 14. knocking rod; 15. third fixed block; 16. first round rod; 17. double-axis motor; 18. support seat; 19. round pin; 20. positioning plate; 21. second round rod; 22. first cam; 23. second cam; 24. first spring; 25. pressure relief valve; 26. piston cylinder; 27. second support plate; 28. first piston rod; 29. ​​ball; 30. retaining ring; 31. second piston rod; 32. second spring; 33. first one-way valve; 34. second one-way valve. DETAILED DESCRIPTION

[0032] See also Figures 1 to 6 The present invention provides a technical solution: a solder joint detection device, comprising a housing 1, a first support plate 9 located above the housing 1, and an X-ray detection component 10 located above the first support plate 9 (existing technology), and further comprising:

[0033] The angle adjustment mechanism includes a driving component, a clamping component, and a second groove wheel 4 symmetrically mounted on the housing 1; when the clamping component clamps the electronic component 6, the driving component intermittently drives the second groove wheel 4 to rotate, and at this time the electronic component 6 rotates under the X-ray detection component 10;

[0034] The knocking mechanism includes a force adjustment component and a first groove wheel 2 symmetrically rotatably mounted on the housing 1, a second round rod 21 is fixedly mounted on one side of the first groove wheel 2 penetrating the housing 1, a first cam 22 is fixedly mounted on the outer wall of the second round rod 21, a knocking rod 14 is abutted against the outer wall of the first cam 22, and a first spring 24 is mounted on the outer wall of the knocking rod 14; after the second groove wheel 4 rotates one circle, the first groove wheel 2 drives the first cam 22 to rotate through the second round rod 21, and the first cam 22 no longer squeezes the knocking rod 14. At this time, the first spring 24 stretches out to drive the knocking rod 14 to knock the clamping component, and then the force adjustment component adjusts the pressure of the first spring 24;

[0035] The force adjustment assembly includes a second cam 23 mounted on the outer wall of the second round rod 21, a ball 29 abutting against one side of the second cam 23, a second piston rod 31 rotatably mounted on the outer wall of the ball 29, a piston cylinder 26 slidably mounted on the outer wall of the second piston rod 31, a first piston rod 28 slidably mounted on the outer wall of the piston cylinder 26, a second support plate 27 is mounted on the side of the first piston rod 28 away from the piston cylinder 26, and the outer wall of the second support plate 27 is fixedly connected to the first spring 24;

[0036] Further, such as Figure 2 and Figure 3 As shown, the driving assembly includes a support seat 18, the lower end surface of the support seat 18 is installed on the bottom wall of the housing 1, the upper end surface of the support seat 18 is installed with a dual-axis motor 17, the output axis of the dual-axis motor 17 is symmetrically installed with a first round rod 16, the first round rod 16 is installed with a positioning plate 20 penetrating the housing 1 on the side away from the dual-axis motor 17, the positioning plate 20 is installed with a connecting rod 3 on the side away from the housing 1, and the connecting rod 3 is installed with a round pin 19 on the side facing the housing 1;

[0037] The dual-axis motor 17 rotates to drive the first round rod 16 to rotate, the first round rod 16 drives the positioning plate 20 and the connecting rod 3 to rotate, the connecting rod 3 drives the round pin 19 to rotate, the round pin 19 will in turn drive the second sheave 4 and the first sheave 2 to rotate, the positioning plate 20 positions the first sheave 2 and the second sheave 4;

[0038] Further, such as Figure 1 As shown, the clamping assembly includes two electric telescopic rods 8, which penetrate the housing 1 and are fixedly connected to the second sheave 4, and a clamp 7 is installed on the side of the electric telescopic rod 8 away from the second sheave 4;

[0039] The electric telescopic rod 8 extends or contracts, driving the clamp 7 to clamp the electronic component 6;

[0040] Further, such as Figure 2 and Figure 4 As shown, the outer wall of the knock rod 14 is provided with a slide groove 12, the inner wall of the slide groove 12 is slidably mounted with a second fixed block 13, the lower end surface of the knock rod 14 is slidably mounted with a third fixed block 15, the third fixed block 15 is fixedly mounted on the inner wall of the shell 1, the upper end surface of the knock rod 14 is symmetrically slidably mounted with a first fixed block 11, the first fixed block 11 is fixedly mounted on the inner wall of the shell 1, the upper end surface of the third fixed block 15 is fixedly connected to the second fixed block 13, and the knock rod 14 is L-shaped;

[0041] When the knocking rod 14 slides, the third fixing block 15 and the first fixing block 11 limit its vertical position, and the second fixing block 13 limits its horizontal position upward through the sliding groove 12, so that the knocking rod 14 moves along a certain trajectory;

[0042] Further, such as Figure 6 As shown, a pressure relief valve 25 is installed on the upper end surface of the piston cylinder 26;

[0043] The pressure relief valve 25 can release the gas in the piston cylinder 26, so that the first piston rod 28 returns to the initial position;

[0044] Further, such as Figure 6 As shown, the inner wall of the piston cylinder 26 is installed with a first one-way valve 33 and a second one-way valve 34, the outer wall of the second piston rod 31 is sleeved with a second spring 32, one side of the second spring 32 is installed on the piston cylinder 26, and a retaining ring 30 is installed on the side of the second spring 32 away from the piston cylinder 26, and the retaining ring 30 is fixedly installed on the outer wall of the second piston rod 31;

[0045] The second piston rod 31 moves toward the side of the piston cylinder 26 and compresses the second spring 32 through the retaining ring 30. At this time, the second one-way valve 34 is closed and the first one-way valve 33 is opened. The gas in the piston cylinder 26 pushes the first piston rod 28 outward, and the first piston rod 28 drives the second support plate 27 to move.

[0046] When the second spring 32 extends, the second piston rod 31 is driven away from the piston cylinder 26 through the retaining ring 30. At this time, the first one-way valve 33 is closed, the second one-way valve 34 is opened, and the second piston rod 31 returns to the initial position. Since the first one-way valve 33 is closed, the first piston rod 28 will not retract.

[0047] Further, such as Figure 1 As shown, a control panel 5 is installed on the outer wall of the housing 1 for setting relevant parameters.

[0048] In this embodiment, the solder joint detection method comprises the following steps:

[0049] Step 1: After the external power supply is connected, the control panel 5 is used to control the electric telescopic rod 8 to extend, and the electric telescopic rod 8 drives the clamp 7 to clamp the electronic component 6, and then the double-axis motor 17 is controlled to rotate, and the double-axis motor 17 drives the first round rod 16 to rotate, and the first round rod 16 drives the positioning plate 20 and the connecting rod 3 to rotate, and the connecting rod 3 drives the round pin 19 to rotate, and the round pin 19 will drive the second groove wheel 4 and the first groove wheel 2 to rotate intermittently in turn, and the second groove wheel 4 drives the electronic component 6 to rotate intermittently through the electric telescopic rod 8 and the clamp 7, and at this time, the X-ray detection component 10 detects the surface solder joints until one circle is detected;

[0050] Step 2: When the second groove wheel 4 rotates intermittently, the first groove wheel 2 will rotate accordingly, the first groove wheel 2 drives the second round rod 21 to rotate, the second round rod 21 drives the first cam 22 and the second cam 23 to rotate, the second cam 23 will squeeze the ball 29, the ball 29 drives the second piston rod 31 to move to one side of the piston cylinder 26, and compresses the second spring 32 through the retaining ring 30, at this time the second one-way valve 34 is closed, the first one-way valve 33 is opened, the gas in the piston cylinder 26 will push the first piston rod 28 outward, the first piston rod 28 will drive the second support plate 27 to move, the second support plate 27 compresses the first spring 24, compresses it for the first time, when the second cam 23 does not squeeze the ball 29, the second spring 32 is extended, at this time the first one-way valve 33 is closed, the second one-way valve 34 is opened, so that the second piston rod 31 returns to the initial position and abuts against the second cam 23, at this time the first piston rod 28 will not shrink;

[0051] At the same time, the first cam 22 squeezes the knocking rod 14 to make it away from the electric telescopic rod 8, and compresses the first spring 24. As the second groove wheel 4 rotates, when the second groove wheel 4 rotates one circle, the electronic component 6 also rotates one circle, and the X-ray detection assembly 10 completes all the detection of the solder joints. Then the first groove wheel 2 rotates, and the first cam 22 no longer squeezes the knocking rod 14. The first spring 24 extends, driving the knocking rod 14 to knock the electric telescopic rod 8. The impact force on the electric telescopic rod 8 causes the clamp 7 to drive the electronic component 6 to vibrate, and then the second groove wheel 4 and the first groove wheel 2 continue to rotate intermittently, and the solder joints on the surface of the electronic component 6 after vibration are detected again;

[0052] Step 3: When the knocking rod 14 completes the knocking, the second cam 23 will squeeze the ball 29 again, and the ball 29 will drive the second piston rod 31 to move toward the side of the piston cylinder 26, and compress the second spring 32 through the retaining ring 30. At this time, the second one-way valve 34 is closed, and the first one-way valve 33 is opened. The gas in the piston cylinder 26 will push out the first piston rod 28, and the first piston rod 28 will drive the second support plate 27 to move. The second support plate 27 will compress the first spring 24 again, increasing the pressure on the first spring 24. When the first cam 2 When the knocking rod 14 is no longer squeezed, the first spring 24 can drive the knocking rod 14 to knock the electric telescopic rod 8 with different forces, so that the impact force on the electronic component 6 gradually increases until it is damaged, thereby completing the comprehensive detection and evaluation. When the detection is completed, the pressure relief valve 25 is opened, the first spring 24 is extended, and the second support plate 27 is squeezed. The second support plate 27 drives the first piston rod 28 to move into the piston cylinder 26, and the gas inside the piston cylinder 26 is discharged through the pressure relief valve 25. At this time, the first spring 24 is fully extended and no longer subjected to force.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solder joint detection device, comprising a housing (1), a first support plate (9) located above the housing (1), and an X-ray detection component (10) located above the first support plate (9), characterized in that: Also includes: The angle adjustment mechanism comprises a driving component, a clamping component and a second groove wheel (4) symmetrically mounted on the housing (1); when the clamping component clamps the electronic component (6), the driving component intermittently drives the second groove wheel (4) to rotate, and at this time the electronic component (6) rotates under the X-ray detection component (10); The knocking mechanism comprises a force adjustment component and a first groove wheel (2) symmetrically rotatably mounted on a housing (1); a second round rod (21) is fixedly mounted on one side of the first groove wheel (2) penetrating the housing (1); a first cam (22) is fixedly mounted on the outer wall of the second round rod (21); a knocking rod (14) is abutted against the outer wall of the first cam (22); a first spring (24) is mounted on the outer wall of the knocking rod (14); after the second groove wheel (4) rotates one circle, the first groove wheel (2) drives the first cam (22) to rotate via the second round rod (21), the first cam (22) no longer presses the knocking rod (14), and at this time the first spring (24) stretches to drive the knocking rod (14) to knock the clamping component, and then the force adjustment component adjusts the pressure of the first spring (24); A force adjustment component comprises a second cam (23) mounted on the outer wall of a second round rod (21), a ball (29) abutting against one side of the second cam (23), a second piston rod (31) rotatably mounted on the outer wall of the ball (29), a piston cylinder (26) slidably mounted on the outer wall of the second piston rod (31), a first piston rod (28) slidably mounted on the outer wall of the piston cylinder (26), a second support plate (27) mounted on the side of the first piston rod (28) away from the piston cylinder (26), and an outer wall of the second support plate (27) fixedly connected to a first spring (24); A pressure relief valve (25) is mounted on the upper end surface of the piston cylinder (26); A first one-way valve (33) and a second one-way valve (34) are installed on the inner wall of the piston cylinder (26); A second spring (32) is sleeved on the outer wall of the second piston rod (31); one side of the second spring (32) is mounted on the piston cylinder (26); a retaining ring (30) is mounted on the side of the second spring (32) away from the piston cylinder (26); the retaining ring (30) is fixedly mounted on the outer wall of the second piston rod (31).

2. A solder joint detection device according to claim 1, characterized in that: The driving assembly comprises a support seat (18), the lower end surface of the support seat (18) is mounted on the bottom wall of the housing (1), the upper end surface of the support seat (18) is mounted with a dual-axis motor (17), the output shaft of the dual-axis motor (17) is symmetrically mounted with a first round rod (16), a positioning plate (20) is mounted on the side of the first round rod (16) that passes through the housing (1) away from the dual-axis motor (17), a connecting rod (3) is mounted on the side of the positioning plate (20) that is away from the housing (1), and a round pin (19) is mounted on the side of the connecting rod (3) that faces the housing (1).

3. A solder joint detection device according to claim 1, characterized in that: The clamping assembly comprises two electric telescopic rods (8), the two electric telescopic rods (8) passing through the housing (1) and fixedly connected to the second groove wheel (4), and a clamp (7) is installed on the side of the electric telescopic rod (8) away from the second groove wheel (4).

4. A solder joint detection device according to claim 1, characterized in that: The knocking rod (14) has an outer wall provided with a slide groove (12), the inner wall of the slide groove (12) has a second fixed block (13) slidably mounted thereon, the lower end surface of the knocking rod (14) has a third fixed block (15) slidably mounted thereon, the third fixed block (15) is fixedly mounted on the inner wall of the outer shell (1), and the upper end surface of the knocking rod (14) has a first fixed block (11) symmetrically slidably mounted thereon, the first fixed block (11) being fixedly mounted on the inner wall of the outer shell (1).

5. A solder joint detection device according to claim 4, characterized in that: The upper end surface of the third fixing block (15) is fixedly connected to the second fixing block (13).

6. A solder joint detection method, using the solder joint detection device according to claim 1, characterized in that: The following steps are involved: The first step is to clamp the electronic component (6) by the clamping assembly, and then the driving assembly drives the second groove wheel (4) and the first groove wheel (2) to rotate intermittently in sequence, and the second groove wheel (4) drives the electronic component (6) on the clamping assembly to rotate intermittently under the X-ray detection assembly (10), so as to complete multi-angle detection of the welding point; Step 2: As the second groove wheel (4) rotates, when the second groove wheel (4) completes one rotation, the electronic component (6) also rotates one rotation, and the X-ray detection component (10) completes all detection. At the same time, the driving component continues to drive the first groove wheel (2), and the first groove wheel (2) drives the first cam (22) and the second cam (23) to rotate through the second round rod (21). The first cam (22) no longer squeezes the knocking rod (14). At this time, the first spring (24) extends to drive the knocking rod (14) to knock the clamping component, causing the electronic component (6) to vibrate, and then the second groove wheel (4) continues to rotate intermittently to detect the solder joints on the surface of the electronic component (6) after vibration; Step 3: After the knocking rod (14) completes knocking on the clamping assembly, the first groove wheel (2) drives the second cam (23) to squeeze the second piston rod (31), the second piston rod (31) squeezes the gas in the piston cylinder (26), the gas squeezes the first piston rod (28), the first piston rod (28) drives the second support plate (27) to squeeze the first spring (24), and the pressure of the first spring (24) is changed, so that the first spring (24) can drive the knocking rod (14) to knock on the clamping assembly with different forces, so that the impact force on the electronic component (6) gradually increases, thereby completing the comprehensive detection of the solder joint.

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