Smt patch reflow soldering fixture

Abstract

The utility model belongs to SMT patch technical field especially is a kind of SMT patch reflow soldering fixture, including pedestal frame and the support frame being fixed in pedestal frame upper and lower two ends symmetry, further include: clamp disc, rotation is connected in the inside of support frame, the outside of support frame is provided with driving mechanism;Positioning sliding slot, symmetry is set in the inside of clamp disc;Clamping mechanism, it is set in one side of clamp disc;Bearing groove, sliding joint is in the inside of clamping plate, the inside sliding joint of bearing groove is limited sliding slot;Locking mechanism, it is set in the inside of clamping plate.The utility model, through servo motor cooperation worm gear piece, worm piece drive clamp disc rotation, can realize 0-360 ° range angle adjustment, and still can complete to clamp disc reverse side, to ensure subsequent processing, simultaneously because worm gear self-locking property is strong, angle keeps stable, ensure that patch is heated evenly when reflow soldering, clamping mechanism is driven clamping plate sliding by adjusting screw rod, can adapt to different sizes SMT patch.

Description

Technical Field

[0001] This utility model relates to the field of SMT (Surface Mount Technology) technology, specifically to an SMT reflow soldering fixture. Background Technology

[0002] Surface mount technology, also known as surface mount assembly, is a circuit assembly technology that mounts leadless or short-lead surface mount components onto the surface of a printed circuit board or other substrate, and then assembles them by reflow soldering or dip soldering.

[0003] In the SMT assembly process, reflow soldering is a critical step. Existing reflow soldering fixtures have a fixed clamping structure, making it difficult to adapt to SMT components of different sizes. In addition, after soldering one side, the circuit board needs to be removed, flipped, and reinstalled onto the fixture to solder the other side. This method is inconvenient and inefficient, which greatly reduces the applicability of the fixtures.

[0004] Therefore, we propose an SMT reflow soldering fixture to solve the above problems. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an SMT reflow soldering fixture, which solves the problems mentioned in the background art, such as the fixed clamping structure of the reflow soldering fixture, which makes it difficult to adapt to SMT components of different sizes, and the need to remove the circuit board, flip it over, and reinstall it on the fixture to solder the other side after completing one side of the soldering.

[0006] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: An SMT reflow soldering fixture includes a base frame and support frames symmetrically fixed at the upper and lower ends of the base frame, and further includes: The clamping disc is rotatably connected inside the support frame, and a drive mechanism is provided on the outside of the support frame for connecting one end of the clamping disc. The positioning slide is symmetrically opened on the inner side of the fixture plate, and the cross-section of the positioning slide is a "T" shaped structure. The clamping plate is symmetrically slidably engaged inside the positioning slide. The clamping mechanism is located on one side of the clamping plate and is used to drive the clamping plate to slide left and right along the inside of the positioning groove. The carrier groove is slidably engaged inside the clamping plate, and the SMT component carrier is placed on the upper end of the carrier groove. A limiting groove is slidably engaged inside the carrier groove. A clamping slide rod is fixed on the upper end surface of the limiting slide rod, and a clamping panel is fixed on the upper end surface of the clamping slide rod. The locking mechanism is located inside the clamping plate and connected to the limiting slide, and is used to lock and limit the SMT components through the clamping panel.

[0007] Furthermore, the driving mechanism includes a worm gear, a worm shaft, and a servo motor. The worm gear is fixed to one end of the clamping disk, the worm shaft is meshed with one side of the worm gear, and the servo motor is fixed to the upper end face of the worm shaft and is fixed to one side of the support frame.

[0008] Furthermore, the clamping mechanism includes an adjusting screw, a limiting slide bar, and a drive motor. The adjusting screw is rotatably connected to the inside of a set of positioning slide bars, the limiting slide bar is fixed inside another set of positioning slide bars, and the two ends of the clamping plate are sleeved on the outside of the adjusting screw and the limiting slide bar. The drive motor is fixed to one end of the adjusting screw.

[0009] Furthermore, the limiting grooves are evenly distributed inside the clamping plate, and the clamping rods slide up and down along the inside of the limiting grooves for adjustment.

[0010] Furthermore, the locking mechanism includes a return spring and an electromagnet ring. The electromagnet ring is fixed to the lower end face of the limiting slide groove, and the other end of the clamping slide rod is slidably engaged with the inner side of the electromagnet ring. The return spring is sleeved on the outer surface of the clamping slide rod and is disposed on the upper end face of the electromagnet ring.

[0011] Furthermore, the lower end face of the clamping panel is provided with a clamping groove, and the cross-section of the clamping groove is a trapezoidal structure. A clamping pad is slidably engaged inside the clamping groove, and the clamping pad is kept horizontal with the bearing groove.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides an SMT reflow soldering fixture with the following advantages: This invention utilizes a servo motor in conjunction with a worm gear and worm shaft to drive the clamping disc to rotate, enabling angle adjustment within a 0-360° range. It also allows for reversing the clamping disc to ensure subsequent processing. Furthermore, the strong self-locking property of the worm gear and worm shaft maintains a stable angle, ensuring uniform heating of the components during reflow soldering. The clamping mechanism, through adjusting the lead screw, drives the clamping plate to slide, accommodating SMT components of different sizes. The adjustable bearing groove and replaceable clamping pads further enhance adaptability to components of different sizes and thicknesses. A "T"-shaped positioning groove and a limiting slide rod ensure stable sliding of the clamping plate. An electromagnet ring and a return spring work together to achieve precise control of the clamping force, preventing component displacement or damage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the SMT reflow soldering fixture of this utility model; Figure 2This is a bottom view schematic diagram of the SMT chip reflow soldering fixture of this utility model; Figure 3 This is a top view of the clamping disc of this utility model; Figure 4 This is a schematic diagram of the cross-section of the clamping disc of this utility model; Figure 5 This utility model Figure 1 Enlarged view of a portion of point A in the middle; Figure 6 This is a top view of the locking mechanism of this utility model.

[0014] In the diagram: 1. Base frame; 2. Support frame; 3. Clamping disc; 4. Worm gear; 5. Worm; 6. Servo motor; 7. Positioning slide rail; 8. Adjusting screw; 9. Limiting slide bar; 10. Drive motor; 11. Clamping plate; 12. Bearing groove; 13. Limiting slide rail; 14. Clamping slide bar; 15. Clamping panel; 16. Return spring; 17. Electromagnetic ring; 18. Clamping slide rail; 19. Clamping pad. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example like Figure 1-6 As shown, an embodiment of this utility model provides an SMT surface mount reflow soldering fixture, including a base frame 1 and support frames 2 symmetrically fixed at the upper and lower ends of the base frame 1. The base frame 1 can support and limit the support frames 2, preventing the support frames 2 from shifting or shaking. It also includes: The fixture disk 3 is rotatably connected inside the support frame 2. A drive mechanism is provided on the outside of the support frame 2, which is connected to one end of the fixture disk 3. This mechanism drives the fixture disk 3 to rotate around the support frame 2, thereby adjusting the SMT placement angle. The drive mechanism includes a worm gear 4, a worm 5, and a servo motor 6. The worm gear 4 is fixed to one end of the fixture disk 3, the worm 5 is meshed with one side of the worm gear 4, and the servo motor 6 is fixed to the upper end face of the worm 5 and is fixed to one side of the support frame 2. When the servo motor 6 is started, its output shaft drives the worm 5 to rotate. The worm 5 drives the worm gear 4 to rotate through meshing transmission, thereby driving the fixture disk 3 to rotate synchronously. The worm gear structure has self-locking properties, which can stably maintain the adjustment angle of the fixture disk 3. Positioning grooves 7 are symmetrically arranged on the inner side of the fixture disk 3, and the cross-section of the positioning grooves 7 is a "T" shaped structure. The positioning grooves 7 can prevent the clamping plate 11 from disengaging from the grooves while ensuring sliding stability. The clamping plate 11 is symmetrically slidably engaged inside the positioning grooves 7. The clamping plate 11 facilitates subsequent clamping and limiting of SMT components. A clamping mechanism is located on one side of the fixture disk 3 and is used to drive the clamping plate 11 to slide left and right along the inside of the positioning grooves 7. The clamping mechanism includes an adjusting screw 8, a limiting slide bar 9, and a drive motor 10. The adjusting screw 8 is rotatably connected to the inner side of a set of positioning grooves 7. The limiting slide rod 9 is fixed inside another set of positioning slide grooves 7, and the two ends of the clamping plate 11 are sleeved on the outside of the adjusting screw 8 and the limiting slide rod 9. The drive motor 10 is fixed to one end of the adjusting screw 8. When the drive motor 10 is started, the adjusting screw 8 is driven to rotate. Under the limiting action of the limiting slide rod 9, the clamping plate 11 slides in opposite directions along the positioning slide groove 7 to realize the clamping width adjustment. The limiting slide grooves 13 are evenly opened inside the clamping plate 11, and the clamping slide rod 14 slides up and down along the inside of the limiting slide grooves 13. The limiting slide grooves 13 can limit the clamping slide rod 14 and prevent the clamping slide rod 14 from deviating or shaking. The carrier groove 12 is slidably engaged inside the clamping plate 11, and the SMT component is placed on the upper end of the carrier groove 12. A limiting groove 13 is slidably engaged inside the carrier groove 12. A clamping rod 14 is fixed to the upper end face of the limiting groove 13, and a clamping panel 15 is fixed to the upper end face of the clamping rod 14. The carrier groove 12 can support the SMT component, ensuring the connection effect of the SMT component. A locking mechanism is located inside the clamping plate 11 and connected to the limiting slide groove 13. It is used to lock and limit the SMT component through the clamping panel 15. The locking mechanism includes a return spring 16 and an electromagnet ring 17. The electromagnet ring 17 is fixed to the lower end face of the limiting slide groove 13, and the other end of the clamping slide rod 14 is slidably engaged with the inner side of the electromagnet ring 17. The return spring 16 is sleeved on the outer surface of the clamping slide rod 14 and is located on the upper end face of the electromagnet ring 17. When the electromagnet ring 17 is energized, it generates a magnetic force to attract the clamping slide rod 14 to slide downward, causing the clamping panel 15 to press the SMT component and achieve locking. When the power is off, the return spring 16 elastically resets, pushing the clamping slide rod 14 to slide upward and release the component. The lower end face of the clamping panel 15 is provided with a clamping groove 18, and the cross-section of the clamping groove 18 is a trapezoidal structure. The clamping pad 19 is slidably engaged inside the clamping groove 18, and the clamping pad 19 is kept horizontal with the bearing groove 12. The clamping groove 18 can prevent the clamping pad 19 from falling off, and the screw connection can prevent the clamping pad 19 from shifting or shaking. The clamping pad 19 is made of elastic wear-resistant material, and the clamping pad 19 is kept horizontal with the bearing groove 12, which can ensure stable clamping of the patch and avoid scratching the patch surface.

[0017] When in use, first, de-energize the electromagnet ring 17, and the reset spring 16 pushes the clamping panel 15 upward; place the SMT chip on the upper end of the carrier groove 12, and adjust the position of the carrier groove 12 in the clamping plate 11 according to the chip length; Then, start the drive motor 10, which drives the adjusting screw 8 to rotate, causing the two clamping plates 11 to slide towards each other along the positioning groove 7 until the clamping plates 11 are in contact with both sides of the patch. Then, turn off the drive motor 10 and energize the electromagnet ring 17. The magnetic force attracts the clamping slide bar 14 to slide downward, causing the clamping panel 15 and the clamping pad 19 to press the patch. The current is adjusted according to the patch thickness to control the clamping force and complete the locking. Then, the SMT patch can be soldered. After one side is soldered, the servo motor 6 can be started to drive the worm gear 5 and the worm wheel 4 to rotate, which will drive the fixture disk 3 to rotate. Then, turn off the servo motor 6, and the worm gear will lock itself to maintain the angle. Finally, after welding is completed, the electromagnet ring 17 can be de-energized, the reset spring 16 can lift the clamping panel 15, and the finished patch can be removed.

[0018] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An SMT surface mount reflow soldering fixture, comprising a base frame (1) and support frames (2) symmetrically fixed at the upper and lower ends of the base frame (1), characterized in that, Also includes: The clamping disc (3) is rotatably connected inside the support frame (2), and a drive mechanism is provided on the outside of the support frame (2) for connecting one end of the clamping disc (3); The positioning slide (7) is symmetrically opened on the inner side of the clamping plate (3), and the cross-section of the positioning slide (7) is a "T" shaped structure. The clamping plate (11) is symmetrically slidably engaged inside the positioning slide (7). The clamping mechanism is located on one side of the clamping plate (3) and is used to drive the clamping plate (11) to slide left and right along the inside of the positioning groove (7); The carrier groove (12) is slidably snapped into the inside of the clamping plate (11), and the SMT chip carrier is placed on the upper end of the carrier groove (12). The inner side of the carrier groove (12) is slidably snapped into a limiting groove (13). The upper end surface of the limiting groove (13) is fixed with a clamping slide rod (14), and the upper end surface of the clamping slide rod (14) is fixed with a clamping panel (15). A locking mechanism is provided inside the clamping plate (11) and connected to the limiting slide (13) for locking and limiting the SMT component via the clamping panel (15).

2. The SMT reflow soldering fixture according to claim 1, characterized in that: The drive mechanism includes a worm gear (4), a worm (5) and a servo motor (6). The worm gear (4) is fixed to one end of the clamping plate (3), the worm (5) is meshed with one side of the worm gear (4), and the servo motor (6) is fixed to the upper end face of the worm (5) and is fixed to one side of the support frame (2).

3. The SMT reflow soldering fixture according to claim 1, characterized in that: The clamping mechanism includes an adjusting screw (8), a limiting slide (9), and a drive motor (10). The adjusting screw (8) is rotatably connected to the inside of a set of positioning slides (7), the limiting slide (9) is fixed inside another set of positioning slides (7), and the two ends of the clamping plate (11) are sleeved on the outside of the adjusting screw (8) and the limiting slide (9). The drive motor (10) is fixed to one end of the adjusting screw (8).

4. The SMT reflow soldering fixture according to claim 3, characterized in that: The limiting groove (13) is evenly opened inside the clamping plate (11), and the clamping rod (14) slides up and down along the limiting groove (13) for adjustment.

5. The SMT reflow soldering fixture according to claim 1, characterized in that: The locking mechanism includes a return spring (16) and an electromagnet ring (17). The electromagnet ring (17) is fixed to the lower end face of the limiting slide groove (13), and the other end of the clamping slide rod (14) is slidably engaged with the inner side of the electromagnet ring (17). The return spring (16) is sleeved on the outer surface of the clamping slide rod (14) and is set on the upper end face of the electromagnet ring (17).

6. The SMT reflow soldering fixture according to claim 5, characterized in that: The clamping panel (15) has a clamping groove (18) on its lower end face, and the cross-section of the clamping groove (18) is a trapezoidal structure. The clamping groove (18) is slidably engaged with a clamping pad (19) inside, and the clamping pad (19) is kept horizontal with the bearing groove (12).

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