Wave soldering process assisted by jig

Abstract

The invention relates to the technical field of circuit board welding, in particular to a jig-assisted wave soldering process which comprises the following steps: step S100, a spring and a circuit board are fixed on a jig, and the spring is pressed at a preset position of the circuit board by the jig; s200, the spring and the position needing to be welded are coated with scaling powder; s300, the jig coated with the soldering flux is fed into wave soldering equipment, the wave soldering equipment is started, and welding of the circuit board is completed; s400, after welding is completed, the jig is taken out; according to the jig-assisted wave soldering process disclosed by the embodiment of the invention, the jig is adopted to fix the spring and the circuit board, and the wave soldering equipment is adopted to perform automatic soldering when the spring is welded, so that the efficiency and the safety of spring soldering are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board welding, and in particular to a jig-assisted wave soldering process. Background Art

[0002] Currently, the process of soldering springs to circuit boards generally uses manual soldering, and the steps are as follows: first, fix the circuit board and fix the circuit board to the workbench, then apply flux to the spring and the circuit board soldering point, and finally, hold the spring in one hand and use a soldering iron in the other hand to solder the spring to the circuit.

[0003] This method has the problem of low efficiency. At the same time, there is also the risk of injury during soldering, such as accidentally touching the soldering iron and causing burns. Therefore, the present application proposes a wave soldering process assisted by a fixture. Summary of the Invention

[0004] The object of the present invention is to provide a jig-assisted wave soldering process to solve the problem of low efficiency in soldering a spring to a circuit board.

[0005] To achieve the above object, the present invention provides the following technical solutions: A wave soldering process assisted by a jig, the soldering process comprising the following steps: Step S100: fixing the spring and the circuit board to a jig, wherein the spring is pressed by the jig to a preset position on the circuit board; Step S200: applying flux to the spring and the position where welding is required; Step S300: Send the fixture coated with flux into the wave soldering equipment, start the wave soldering equipment, and complete the soldering of the circuit board; Step S400: After welding is completed, the jig is removed.

[0006] Furthermore, the jig is fed into the wave soldering equipment through a feeding structure.

[0007] Furthermore, the fixture includes: A jig base plate, the jig base plate being a square plate, having at least one spring fixing hole provided on the jig base plate, and a welding hole provided on the jig base plate at a preset position next to the spring fixing hole; Multiple locking mechanisms are distributed at preset positions on the fixture base plate and are used to fix different positions of the circuit board.

[0008] Furthermore, the locking mechanism includes: A pressure strip, one end of which is rotatably connected to the jig base plate. When pressing the circuit board, the pressure strip is rotated so that the pressure strip can be pressed against the circuit board.

[0009] Furthermore, the locking mechanism includes: A rotating shaft, the rotating shaft being rotatably connected to the jig base plate, the rotating shaft being provided with a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate being arranged on the sides of the rotating shaft in a divergent manner, and the second pressing plate being located on a side of the rotating shaft away from the jig base plate; a first torsion spring, wherein two ends of the first torsion spring are respectively fixed to the rotating shaft and the fixture bottom plate, and are used to control the return of the rotating shaft; A limit slot, wherein the limit slot is provided with a limit starting point, a first slide groove, and a limit end point in sequence along the circumferential direction of the rotating shaft, and the limit end point is connected to the limit starting point through a second slide groove, so that the limit slot forms a circular groove, and the limit slot is provided on the fixture bottom plate or the rotating shaft; The limiting elastic wire, when fixing the circuit board, controls the circuit board to press the first clamping plate and then releases it, and the limiting elastic wire slides from the limiting starting point through the first sliding groove to the limiting end point and is stuck in the limiting end point. When removing the circuit board, the limiting elastic wire slides from the limiting end point through the second sliding groove to the limiting starting point and stops at the limiting starting point. The elastic limiting wire is set on the rotating shaft or the jig bottom plate.

[0010] Furthermore, an axle seat is fixedly connected to the fixture base plate, and the rotating shaft is rotatably connected to the axle seat.

[0011] Furthermore, the limit slot is arranged on the inner wall of the limit seat, the limit seat is fixed to the bottom plate of the fixture, the limit seat is a cylindrical structure, the limit elastic wire is a torsion spring structure, one end of the limit elastic wire is fixedly connected to the rotating shaft, and the end of the limit elastic wire away from the rotating shaft is slidably connected to the limit slot.

[0012] Furthermore, the limiting slot is located on the rotating shaft, the limiting elastic wire is a bent elastic wire, and one end of the limiting elastic wire is fixedly connected to the fixture bottom plate.

[0013] Furthermore, the depth of the limit starting point is greater than the depth of the second chute, the depth of the limit end point is greater than the depth of the end of the first chute close to the limit end point, the depth of the first chute gradually decreases from the limit starting point to the limit end point, and the depth of the second chute gradually decreases from the limit end point to the limit starting point.

[0014] In summary, the present invention has the following beneficial effects compared with the prior art: The jig-assisted wave soldering process disclosed in the embodiment of the present invention uses a jig to fix a spring and a circuit board, and uses wave soldering equipment to perform automatic soldering when soldering the spring, thereby improving the efficiency and safety of spring soldering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a process flow chart of a jig-assisted wave soldering process disclosed in an embodiment of the present invention.

[0016] Figure 2 This is a structural diagram of one side of a fixture for fixing a circuit board according to an embodiment of the present invention.

[0017] Figure 3 This is a structural diagram of the welding side of the jig disclosed in an embodiment of the present invention.

[0018] Figure 4 This is a schematic structural diagram of the fixing buckle in the fixture disclosed in Example 2 of the present invention.

[0019] Figure 5 This is a cross-sectional view of the fixing buckle in the fixture disclosed in Example 2 of the present invention.

[0020] Figure 6 for Figure 3 Left view of .

[0021] Figure 7 This is an expanded view of the inner wall of the limiting sleeve in the fixture disclosed in Example 2 of the present invention.

[0022] Figure 8 This is a cross-sectional view of the fixing buckle in the fixture disclosed in Example 3 of the present invention.

[0023] Figure 9 This is a schematic structural diagram of the fixing buckle in the fixture disclosed in Example 3 of the present invention.

[0024] Figure 10 This is a schematic structural diagram of the limiting elastic wire in the fixture disclosed in Example 3 of the present invention.

[0025] Reference numerals: 10. Fixture base; 11. Circuit board indicator groove; 12. Spring fixing hole; 13. Welding hole; 14. Edge strip; 20. Pressure strip; 30. Rotating shaft; 31. Torsion spring connecting section; 32. Pressing section; 33. Rotating section; 34. Spring fixing section; 35. First pressing plate; 36. Second pressing plate; 37. Limiting section; 40. Shaft seat; 50. First torsion spring; 60. Limiting seat; 61. Limiting starting point; 62. First slide; 63. Limiting end point; 64. Second slide; 70. Limiting elastic wire; 71. Limiting head; 72. Connecting section; 73. Fixing section. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] This embodiment 1 like Figure 1 As shown, a jig-assisted wave soldering process is provided in accordance with an embodiment of the present invention, and the soldering process includes the following steps: Step S100: fixing the spring and the circuit board to a jig, wherein the spring is pressed by the jig to a preset position on the circuit board; Step S200: applying flux to the spring and the position where welding is required; Step S300: Send the fixture coated with flux into the wave soldering equipment, start the wave soldering equipment, and complete the soldering of the circuit board; Step S400: After welding is completed, the jig is removed.

[0028] Specifically, in this embodiment, when performing spring welding, first fix one end of the spring to the jig, and the end of the spring that cooperates with the circuit board is away from the jig, and the circuit board is fixed to the jig. At this time, the end of the spring that cooperates with the circuit board is attached to the circuit board. At this time, the spring is in a compressed state, so that the contact between the spring and the circuit board is relatively close. Apply flux at a preset position on the circuit board, and then put the jig into the wave soldering equipment, start the wave soldering equipment, and weld the spring at the position where the flux is applied, thereby fixing the spring to the circuit board. After welding is completed, take out the jig.

[0029] The jig-assisted wave soldering process disclosed in the embodiment of the present invention uses a jig to fix a spring and a circuit board, and uses wave soldering equipment to perform automatic soldering when soldering the spring, thereby improving the efficiency and safety of spring soldering.

[0030] Specifically, in this embodiment, the wave soldering equipment is the existing technology, and the jig is fed into the wave soldering equipment through a feeding structure (such as the feeding structure on the wave soldering equipment). After the soldering is completed, the jig is fed out of the wave soldering equipment through the feeding structure.

[0031] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the fixture includes: A jig base plate 10, which is a square plate. The jig base plate 10 is provided with at least one spring fixing hole 12. The jig base plate 10 is provided with a welding hole 13 at a preset position next to the spring fixing hole 12; Multiple locking mechanisms are distributed at preset positions on the fixture base plate 10 and are used to fix different positions of the circuit board.

[0032] Specifically, in this embodiment, the jig base plate 10 is a square plate, and the spring fixing hole 12 is a circular groove structure opened on the jig base plate 10. When fixing the spring, the end of the spring is inserted into the spring fixing hole 12. The welding hole 13 is a through-hole structure. The spring fixing hole 12 is opened at a preset position on the side of the spring fixing hole 12. During welding, the solder wave crest sticks to the preset position of the circuit board through the welding hole 13, that is, the welding hole 13 leaks out of the preset position of the circuit board, thereby welding the spring through the welding hole 13.

[0033] In this embodiment, edge positions of the jig base plate 10 are further fixedly connected with side strips 14 by screws. The side strips 14 are used to strengthen the strength of the jig base plate 10 and prevent the jig base plate 10 from bending.

[0034] In this embodiment, the locking mechanism includes a pressure strip 20, one end of which is rotatably connected to the jig base 10 by a screw. When the circuit board is pressed, the pressure strip 20 is rotated so that the pressure strip 20 can be pressed against the circuit board.

[0035] In this embodiment, a circuit board indicator groove 11 is further provided on the fixture base plate 10 , and the spring fixing hole 12 and the welding hole 13 are both located in the circuit board indicator groove 11 .

[0036] Example 2 like Figures 4 to 7 As shown, as another embodiment of the present invention, this embodiment is different from embodiment 1 in that the locking mechanism includes: A rotating shaft 30 is rotatably connected to the jig base 10. A first pressing plate 35 and a second pressing plate 36 are provided on the rotating shaft 30. The first pressing plate 35 and the second pressing plate 36 are arranged in a divergent manner on the side of the rotating shaft 30. The second pressing plate 36 is located on the side of the rotating shaft 30 away from the jig base 10. When fixing the circuit board, the circuit board presses the first pressing plate 35 to drive the rotating shaft 30 to rotate. The second pressing plate 36 rotates to the side of the circuit board away from the jig base 10 and presses on the circuit board. A shaft seat 40, the shaft seat 40 is fixedly connected to the fixture base 10, and the rotating shaft 30 is rotatably connected to the shaft seat 40; a first torsion spring 50 , one end of which is fixedly connected to the jig base 10 , and the other end of which is fixedly connected to the rotating shaft 30 , for controlling the return of the rotating shaft 30 ; The limiting seat 60 is provided with a limiting slot. The limiting slot is provided with a limiting starting point 61, a first sliding groove 62, and a limiting end point 63 in sequence along the circumferential direction of the rotating shaft 30. The limiting end point 63 is connected to the limiting starting point 61 through a second sliding groove 64, so that the limiting slot forms a circular groove. The limiting slot is provided on the inner wall or outer wall of the limiting seat 60; The limiting elastic wire 70 has one end fixedly connected to the rotating shaft 30, and the end of the limiting elastic wire 70 away from the rotating shaft 30 is slidably connected to the limiting slot. When fixing the circuit board, the control circuit board presses the first clamping plate 35 and then releases it. The rotating shaft 30 rotates forward by a preset angle and then rotates reversely by a preset angle. The limiting elastic wire 70 slides from the limiting starting point 61 through the first sliding groove 62 to the limiting end point 63 and is stuck in the limiting end point 63. When removing the circuit board, the control circuit board presses the first clamping plate 35 and then releases it. The limiting elastic wire 70 slides from the limiting end point 63 through the second sliding groove 64 to the limiting starting point 61 and stops at the limiting starting point 61.

[0037] Specifically, such as Figure 5 As shown, the rotating shaft 30 is provided with a torsion spring connecting section 31, a pressing section 32, a rotating section 33 and a spring fixing section 34 in sequence from one end to the other end. The first torsion spring 50 is sleeved on the torsion spring connecting section 31, and the first pressing plate 35 and the second pressing plate 36 are located on the pressing section 32. The diameter of the pressing section 32 is larger than the diameter of the torsion spring connecting section 31. The first pressing plate 35 is parallel to the jig bottom plate 10, and the second pressing plate 36 is parallel to the jig bottom plate 10. 0 is less than 90 degrees, the first pressing plate 35 and the second pressing plate 36 are located on the same side of the pressing section 32, the diameter of the rotating section 33 is smaller than the diameter of the pressing section 32, the rotating section 33 is rotatably connected to the shaft seat 40, and the shaft seat 40 is fixedly connected to the fixture base 10 by screws, the spring fixing section 34 is a blind hole structure, and a retaining spring is provided on the spring fixing section 34, and the retaining spring connects the rotating shaft 30 to the shaft seat 40;

[0038] In this embodiment, the limiting elastic wire 70 is a torsion spring, and one end of the limiting elastic wire 70 is fixedly connected to the inner side of the spring fixing section 34. For example, the limiting elastic wire 70 is fixed to the inner side of the spring fixing section 34 by bonding and interference fit, and the end of the limiting elastic wire 70 away from the spring fixing section 34 is slidably connected to the limiting slot.

[0039] like Figure 6 and Figure 7 As shown, the limit seat 60 is a cylindrical structure, and the limit seat 60 is fixedly connected to the fixture base 10 by screws. The limit slot is located on the inner wall of the limit seat 60, and the limit starting point 61 is located on the center plane of the limit seat 60 (that is, a virtual plane perpendicular to the central axis and at the same distance from both ends of the limit seat 60, as shown in FIG. Figure 7 The bottom of the limit end point 63 points to the concave structure of the limit starting point 61, and the center plane of the center of the limit end point 63 is close to one side of the first slide groove 62. The first slide groove 62 is a bending groove, and the second slide groove 64 is a bending groove. The second slide groove 64 and the first slide groove 62 are located on both sides of the center plane. The starting point of the inner wall of the first slide groove 62 is located on the side of the center plane close to the second slide groove 64, so that the limit elastic wire 70 can slide into the first slide groove 62 when sliding from the limit starting point 61. When the limit elastic wire 70 slides in the first slide groove 62, the limit elastic wire 70 extends. When the rotating shaft 30 rotates, the end of the limit elastic wire 70 is stuck in the limit end point 63. At this time, the limit elastic wire 70 is still in an extended state. When the end of the limit elastic wire 70 slides in the second slide groove 64, the limit elastic wire 70 is first compressed and then returned to its position.

[0040] Preferably, the depth of the limit starting point 61 is greater than the depth of the second slide groove 64, the depth of the limit end point 63 is greater than the depth of the end of the first slide groove 62 close to the limit end point 63, the depth of the first slide groove 62 gradually decreases from the limit starting point 61 to the limit end point 63, and the depth of the second slide groove 64 gradually decreases from the limit end point 63 to the limit starting point 61, so that the limit elastic wire 70 can be stuck in the inner side of the limit end point 63 and the limit starting point 61.

[0041] Example 3 like Figure 8 As shown in FIG. 10 , as another embodiment of the present invention, this embodiment differs from Example 1 in that, in this embodiment, the limiting slot is located on the rotating shaft 30 , the limiting elastic wire 70 is a bent elastic wire, and one end of the limiting elastic wire 70 is fixedly connected to the shaft seat 40 or the jig base 10 ; In this embodiment, the limiting elastic wire 70 includes a limiting head 71, a connecting section 72 and a fixed section 73. The limiting elastic wire 70 is spatially bent, that is, the limiting head 71 and the fixed section 73 are not coplanar. The fixed section 73 is fixedly connected to the rotating shaft 30, and the limiting head 71 is slidably connected to the limiting slot. The limiting slot referred to in this embodiment is the limiting slot shown in Example 2.

[0042] In some embodiments, the limiting elastic wire 70 can also be fixed to the jig base plate 10, such as the fixing section 73 is fixed to the jig base plate 10. At this time, the fixing section 73 and the limiting head 71 can be coplanar or non-coplanar.

[0043] In this embodiment, a limiting section 37 is provided at the position of the spring fixing section 34 , the limiting slot is located on the limiting section 37 , and the rotating shaft 30 does not include the spring fixing section 34 .

[0044] The terms used in this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The singular forms "a," "the," and "the" used in this invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0045] It should be understood that although the terms "first," "second," "third," etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. Depending on the context, the term "if" as used herein may be interpreted as "when," "when," or "in response to determining."

[0046] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wave soldering process assisted by a jig, characterized in that: The welding process comprises the following steps: Step S100: fixing the spring and the circuit board to a jig, wherein the spring is pressed by the jig to a preset position on the circuit board; Step S200: applying flux to the spring and the position where welding is required; Step S300: Send the fixture coated with flux into the wave soldering equipment, start the wave soldering equipment, and complete the soldering of the circuit board; Step S400: After welding is completed, the jig is removed.

2. The jig-assisted wave soldering process according to claim 1, characterized in that: The jig is fed into the wave soldering equipment through a feeding structure.

3. The jig-assisted wave soldering process according to claim 1 or 2, characterized in that: The fixtures include: A jig base plate, the jig base plate being a square plate, having at least one spring fixing hole provided on the jig base plate, and a welding hole provided on the jig base plate at a preset position next to the spring fixing hole; Multiple locking mechanisms are distributed at preset positions on the fixture base plate and are used to fix different positions of the circuit board.

4. The jig-assisted wave soldering process according to claim 3, characterized in that: The locking mechanism comprises: A pressure strip, one end of which is rotatably connected to the jig base plate. When pressing the circuit board, the pressure strip is rotated so that the pressure strip can be pressed against the circuit board.

5. The jig-assisted wave soldering process according to claim 3, characterized in that: The locking mechanism includes: A rotating shaft, the rotating shaft being rotatably connected to the jig base plate, the rotating shaft being provided with a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate being arranged on the sides of the rotating shaft in a divergent manner, and the second pressing plate being located on a side of the rotating shaft away from the jig base plate; a first torsion spring, wherein two ends of the first torsion spring are respectively fixed to the rotating shaft and the fixture bottom plate, and are used to control the return of the rotating shaft; A limit slot, wherein the limit slot is provided with a limit starting point, a first slide groove, and a limit end point in sequence along the circumferential direction of the rotating shaft, and the limit end point is connected to the limit starting point through a second slide groove, so that the limit slot forms a circular groove, and the limit slot is provided on the fixture bottom plate or the rotating shaft; The limiting elastic wire, when fixing the circuit board, controls the circuit board to press the first clamping plate and then releases it, and the limiting elastic wire slides from the limiting starting point through the first sliding groove to the limiting end point and is stuck in the limiting end point. When removing the circuit board, the limiting elastic wire slides from the limiting end point through the second sliding groove to the limiting starting point and stops at the limiting starting point. The elastic limiting wire is set on the rotating shaft or the jig bottom plate.

6. The jig-assisted wave soldering process according to claim 5, characterized in that: A shaft seat is fixedly connected to the fixture base plate, and the rotating shaft is rotatably connected to the shaft seat.

7. The jig-assisted wave soldering process according to claim 5, characterized in that: The limit slot is arranged on the inner wall of the limit seat, the limit seat is fixed to the bottom plate of the fixture, the limit seat is a cylindrical structure, the limit elastic wire is a torsion spring structure, one end of the limit elastic wire is fixedly connected to the rotating shaft, and the end of the limit elastic wire away from the rotating shaft is slidably connected to the limit slot.

8. The jig-assisted wave soldering process according to claim 5, characterized in that: The limiting slot is located on the rotating shaft, the limiting elastic wire is a bent elastic wire, and one end of the limiting elastic wire is fixedly connected to the fixture bottom plate.

9. The jig-assisted wave soldering process according to claim 5, characterized in that: The depth of the limit starting point is greater than the depth of the second chute, the depth of the limit end point is greater than the depth of the end of the first chute close to the limit end point, the depth of the first chute gradually decreases from the limit starting point to the limit end point, and the depth of the second chute gradually decreases from the limit end point to the limit starting point.

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