Wave-soldering carrier for PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB wave-soldering carrier, and relates to the field of board wave-soldering carriers. The PCB wave-soldering carrier comprises a tray, the upper side face of the tray is provided with a plurality of containing grooves arranged in an array mode, the PCB wave-soldering carrier further comprises a fastening mechanism, universal locking devices capable of fixing PCB positions in multiple directions and a fixing frame arranged above the tray, the fixing frame is provided with a through groove, the universal locking devices are arranged in the through groove, and the universal locking devices are arranged in the through groove. The universal locking device is limited by the through groove in the vertical direction and can move along the through groove in the horizontal direction, and the fastening mechanism can limit movement of the universal locking device by extruding the fixing frames on the two sides of the through groove. The problem that the PCB cannot be flexibly fixed in multiple directions can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wave soldering carriers, in particular to a wave soldering carrier for PCB boards. Background Art

[0002] In the field of electronic manufacturing, wave soldering is a widely used process in circuit board assembly, aiming to solder the solder ends or pins of electronic components to the PCB board. There are some limitations in the design of traditional wave soldering carriers, especially in fixing the PCB board, which directly affect the welding quality and efficiency.

[0003] Existing wave soldering carriers for PCB boards usually adopt a carrier plate structure, and a plurality of accommodating positions arranged in an array are provided on the carrier plate. During the welding process, the circuit board is placed in the accommodating position and fixed by screws. However, this fixing method has several significant problems: one-way fixing limitation, the traditional fixing method can only fix the edge of the PCB board. For some larger PCB boards during the furnace passing process, it cannot meet the fixing requirements in the middle of the PCB board, resulting in problems such as the PCB board falling off due to the jitter generated when transporting the carrier or the PCB board deforming due to heat, affecting the processing accuracy; lack of flexibility, for PCB boards of different sizes and shapes, the fixing method of the existing carrier lacks sufficient flexibility. In production, there are a large number of products with different models but similar hardware solutions. The hardware layouts of such products are highly similar, but due to adapting to different housing structures or other reasons, the size of the PCB board and the fixing hole positions are often slightly adjusted. Using the traditional solution requires re-designing the carrier. Especially in R & D and small batch trial production, with continuous experiments, the PCB board is frequently adjusted, and repeated design of the carrier plate wastes a lot of time. Summary of the Utility Model

[0004] Aiming at the above problems, the present application provides a wave soldering carrier for PCB boards, which can solve the problem of being unable to flexibly fix the PCB board in multiple directions.

[0005] To achieve the above object, the technical solution provided by the present application is as follows:

[0006] The wave soldering carrier for PCB board includes a tray. On the upper side of the tray, there are several accommodating grooves arranged in an array. At the grooves, there are several wave soldering openings. It also includes a fastening mechanism, a universal locking device that can fix the PCB board position in multiple directions, and a fixing frame arranged above the tray. The fixing frame is provided with a through groove. In the through groove, there are several universal locking devices. The universal locking device is limited in the vertical direction by the through groove and can move along the through groove in the horizontal direction. The fastening mechanism can limit the movement of the universal locking mechanism by squeezing both sides of the fixing frame; The fixing frame has a limiting cavity formed by the through groove, a first concave surface on one side of the through groove, and a second concave surface on the other side of the through groove. Both the first concave surface and the second concave surface are recessed outward; The universal locking device includes a locking mechanism, a fixing rod, and a universal ball arranged in the limiting cavity. The universal ball exposes part of the spherical crown from the openings at both ends of the limiting cavity. The universal ball cooperates with the first concave surface and the second concave surface, can freely rotate around its own spherical center, and can move horizontally along the through groove; The universal ball is provided with a fixing hole passing through the spherical center. The locking mechanism is coaxial with the fixing hole and fixedly connected to the universal ball. The fixing rod passes through the fixing hole and the locking mechanism at the same time and can be locked by the locking mechanism.

[0007] Preferably, the locking mechanism includes a compression tube and a taper nut; At the tail of the compression tube, there are at least two extrusion pieces arranged around the conical surface. There is an external thread on the outer side between the head and the tail of the compression tube. The inner cavity of the taper nut is provided with a corresponding internal thread. At the tail of the taper nut, there is also a conical cavity for locking the extrusion pieces. The fixing rod can pass through the compression tube and be locked by the extrusion pieces.

[0008] Preferably, the fastening mechanism includes a fastening bolt and an annular nut. The fastening bolt horizontally penetrates the fixing frame and passes through the limiting cavity. The tail of the fastening bolt is threadedly connected to the annular nut.

[0009] Preferably, an elastically deformable extrusion block is fixedly arranged at one end of the fixing rod close to the tray.

[0010] Preferably, the fixing frame is slidably connected to the tray. The fixing frame can slide in the horizontal direction and can be restricted from sliding by a positioning bolt.

[0011] Preferably, anti-slip sheets are arranged on both the first concave surface and the second concave surface. On the side of the anti-slip sheet close to the limiting cavity, there are several anti-slip protrusions.

[0012] The above technical solutions have the following advantages or beneficial effects:

[0013] 1. Set up a fastening mechanism, a universal locking device, and a fixing bracket with a through slot. On the one hand, the horizontal initial positioning can be achieved by the movement of the universal locking device along the through slot. On the other hand, the universal locking device can rotate and move the fixing rod up and down to accurately press the PCB board from multiple angles. After pressing, the locking mechanism locks the fixing rod, and the fastening mechanism fixes the universal locking device to fix the PCB board, thus being compatible with PCB boards of different sizes.

[0014] 2. At the same time, due to the ability to press from multiple angles, by changing the pressing angle, it is possible to choose to limit the side of the PCB board to fix it in the horizontal direction, or select a reasonable position on the upper side of the PCB board to press it so that it cannot shift in the vertical direction, further realizing the flexible fixation of the PCB board in multiple directions.

[0015] 3. By setting an elastically deformable extrusion block, while protecting the PCB board, the friction area is increased, making the fixation of the PCB board more firm.

[0016] 4. The fixing bracket is slidably connected to the tray and the sliding is restricted by positioning bolts, which can further accurately determine the pressing position and further improve the flexibility in use to meet complex production requirements.

[0017] 5. By setting anti-slip sheets, the universal ball can be fixed more stably, further improving the stability of fixing the PCB board. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the PCB wave soldering carrier of the embodiment of the present application.

[0019] Figure 2 is of the present application Figure 1 partial enlarged view of part I.

[0020] Figure 3 is the structural schematic diagram of the fixing bracket and the universal locking device part of the embodiment of the present application.

[0021] Figure 4 is of the present application Figure 3 partial enlarged cross-sectional view of part II.

[0022] Figure 5 is the structural schematic diagram of the compression tube part of the embodiment of the present application.

[0023] Figure 6 is the structural schematic diagram of the universal locking device and the fixing bracket in the first state of the embodiment of the present application.

[0024] Figure 7 is the structural schematic diagram of the universal locking device and the fixing bracket in the second state of the embodiment of the present application.

[0025] Figure 8 It is a cross-sectional view of the fixing bracket of the embodiment of the present application.

[0026] In the figure: 1 - tray; 11 - accommodating groove; 111 - wave soldering opening; 2 - fixing bracket; 21 - through groove; 22 - first concave surface; 23 - second concave surface; 24 - limiting cavity; 25 - anti-slip sheet; 251 - anti-slip protrusion; 3 - universal locking device; 31 - locking mechanism; 311 - compression tube; 312 - taper nut; 313 - extrusion sheet; 314 - tapered cavity; 32 - fixing rod; 321 - extrusion block; 33 - universal ball; 4 - fastening mechanism; 12 - positioning bolt. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings of the present application. Obviously, the described embodiments of the present application are only partial embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0028] Refer to Figure 1-8 , the wave soldering carrier for PCB board provided by the embodiment of the present application includes a tray 1, on the upper side of the tray 1 there are provided a plurality of accommodating grooves 11 arranged in an array, at the grooves 11 there are provided a plurality of wave soldering openings 111, and further includes a fastening mechanism 4, a universal locking device 3 capable of fixing the PCB board position in multiple directions, and a fixing bracket 2 arranged above the tray 1. The fixing bracket 2 is provided with a through groove 21, and a plurality of universal locking devices 3 are arranged in the through groove 21. The universal locking device 3 is limited in the vertical direction by the through groove 21 and can move along the through groove 21 in the horizontal direction. The fastening mechanism 4 can limit the movement of the universal locking device 3 by squeezing both sides of the fixing bracket 2.

[0029] As Figure 1 and Figure 8 shown, the fixing bracket 2 has a limiting cavity 24 formed by the through groove 21, a first concave surface 22 located on one side of the through groove 21, and a second concave surface 23 located on the other side of the through groove 21. Both the first concave surface 22 and the second concave surface 23 are recessed outward, and the first concave surface 22 and the second concave surface 23 cooperate with each other to achieve the effect of limiting.

[0030] As Figure 3-7 shown, the universal locking device 3 includes a locking mechanism 31, a fixing rod 32, and a universal ball 33 arranged in the limiting cavity 24. The universal ball 33 exposes a part of the spherical crown from the openings at both ends of the limiting cavity 24. The universal ball 33 cooperates with the first concave surface 22 and the second concave surface 23. Specifically, as Figure 6 and Figure 7As shown, both the first concave surface 22 and the second concave surface 23 are recessed outward, capable of surrounding a part of the universal ball 33, thereby limiting the universal ball 33 in the vertical direction. Generally speaking, the universal ball 33 can freely rotate around its own ball center and can horizontally move along the through groove 21; the universal ball 33 is provided with a fixing hole passing through the ball center, the locking mechanism 31 is coaxial with the fixing hole and fixedly connected to the universal ball 33, and the fixing rod 32 passes through the fixing hole and the locking mechanism 31 at the same time and can be locked by the locking mechanism 31.

[0031] Specifically, as Figure 3-5 shown, the locking mechanism 31 includes a compression tube 311 and a taper nut 312; at least two extrusion pieces 313 are arranged around the taper surface at the tail of the compression tube 311, an external thread is arranged on the outer side between the head and the tail of the compression tube 311, a corresponding internal thread is arranged in the inner cavity of the taper nut 312, and a tapered cavity 314 for locking the extrusion pieces 313 is further arranged at the tail of the taper nut 312. The fixing rod 32 can pass through the compression tube 311 and be locked by the extrusion pieces 313. When the taper nut 312 is tightened, due to the limitation of the tapered cavity 314, the extrusion pieces 313 are extruded, thereby clamping the fixing rod 32 to realize the fixation of the fixing rod 32.

[0032] Specifically, as Figure 2 shown, the fastening mechanism 4 includes a fastening bolt and an annular nut. The fastening bolt horizontally penetrates the fixing frame 2 and passes through the limiting cavity 24, and the tail of the fastening bolt is threadedly connected to the annular nut.

[0033] Specifically, an elastically deformable extrusion block 321 is fixedly arranged at one end of the fixing rod 32 close to the tray 1.

[0034] Specifically, the fixing frame 2 is slidably connected to the tray 1, and the fixing frame 2 can slide in the horizontal direction and can be restricted from sliding by the positioning bolt 12.

[0035] Specifically, anti-slip sheets 25 are arranged on both the first concave surface 22 and the second concave surface 23, and a plurality of anti-slip protrusions 251 are arranged on one side of the anti-slip sheet 25 close to the limiting cavity 24.

[0036] In this embodiment, referring to Figure 3 and Figure 4 , the position of the downward pressure is determined by the movement of the universal ball 33 in the through groove 21, referring to Figure 6 and Figure 7, the downward pressing angle of the fixed rod 32 is controlled by the rotation of the universal ball 33. At the same time, the fixed rod 32 can move up and down in the fixed hole. After determining the position, the fixed rod 32 presses down on the PCB board, and then the locking mechanism 31 locks the fixed rod 32, and the fastening mechanism 4 fixes the universal ball 33, thus completing the fixation of the PCB board at a specific position and a specific angle. Multiple universal locking devices 3 can be set to fix the PCB board in multiple directions to meet complex and demanding production requirements. In summary, the present application has the effect of flexibly fixing the PCB board in multiple directions and can meet diverse production requirements.

Claims

1. PCB wave soldering carrier, including a tray, on the upper side of the tray there are several accommodating grooves arranged in an array, and several wave soldering openings are provided at the grooves, characterized in that, It further includes a fixing frame, a fastening mechanism, and a universal locking device capable of fixing the PCB board position in multiple directions. The fixing frame is provided with a through groove, and a number of universal locking devices are arranged in the through groove. The universal locking device is limited in the vertical direction by the through groove and can move along the through groove in the horizontal direction. The fastening mechanism can limit the movement of the universal locking mechanism by squeezing both sides of the fixing frame; The fixing frame has a limiting cavity formed by the through groove, a first concave surface on one side of the through groove, and a second concave surface on the other side of the through groove. Both the first concave surface and the second concave surface are recessed outward; The universal locking device includes a locking mechanism, a fixing rod, and a universal ball arranged in the limiting cavity. The universal ball exposes part of the spherical crown from the openings at both ends of the limiting cavity. The universal ball cooperates with the first concave surface and the second concave surface, can freely rotate around its own center of the ball, and can move horizontally along the through groove. The universal ball is provided with a fixing hole passing through the center of the ball. The locking mechanism is coaxial with the fixing hole and fixedly connected to the universal ball. The fixing rod passes through the fixing hole and the locking mechanism at the same time and can be locked by the locking mechanism.

2. The PCB wave soldering carrier according to claim 1, characterized in that, The locking mechanism includes a compression tube and a taper nut; at least two extrusion pieces are arranged around the conical surface at the tail of the compression tube. An external thread is arranged on the outer side between the head and the tail of the compression tube. The inner cavity of the taper nut is provided with a corresponding internal thread. A conical cavity for locking the extrusion piece is also arranged at the tail of the taper nut. The fixing rod can pass through the compression tube and be locked by the extrusion piece.

3. The PCB wave soldering carrier according to claim 1, wherein The fastening mechanism includes a fastening bolt and an annular nut. The fastening bolt horizontally penetrates the fixing frame and passes through the limiting cavity. The tail of the fastening bolt is threadedly connected to the annular nut.

4. The PCB wave soldering carrier according to claim 1, wherein An elastically deformable extrusion block is fixedly arranged at one end of the fixing rod close to the tray.

5. The PCB wave soldering carrier according to claim 1, characterized in that, The fixing frame is slidably connected to the tray. The fixing frame can slide in the horizontal direction and can be restricted from sliding by a positioning bolt.

6. The PCB wave soldering carrier according to claim 1, wherein Anti-slip sheets are arranged on both the first concave surface and the second concave surface. A number of anti-slip protrusions are arranged on the side of the anti-slip sheet close to the limiting cavity.

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