Jig for circuit board patch processing

Abstract

The utility model relates to the technical field of PCBA processing equipment, in particular to a feeding mechanism of a chip mounter. Comprising a jig bottom plate and supporting leg frames fixedly arranged on the two sides of the jig bottom plate, two circuit board positioning clamping grooves are formed in the middle of the jig bottom plate, pressing assemblies used for fixing a circuit board to be subjected to surface mounting are installed at the four corners of the two circuit board positioning clamping grooves correspondingly, and a separation pad table is fixedly installed between the two circuit board positioning clamping grooves; according to the jig for circuit board patch processing, the detachable gland plate is additionally arranged, the locking and pressing area is additionally arranged on the gland plate, after patch processing on the front face of the circuit board is completed, auxiliary pressure maintaining can be carried out through the pressure maintaining assembly according to the position where a component which is prone to falling off or deviating is prone to falling off or deviating; therefore, the problem that when the surface mounting jig turns over for surface mounting, surface-mounted components are loosened and fall off due to factors such as vibration during back surface mounting is solved, surface mounting positioning is accurate, and the circuit board is convenient to position, disassemble and assemble on the jig.

Description

Technical Field

[0001] The utility model relates to the technical field of PCBA processing equipment, in particular to a jig for processing circuit board patches. Background Art

[0002] The PCB patch process is a circuit assembly technology that installs pinless or short-lead surface components on the surface of the printed circuit board, and then assembles them by soldering through methods such as reflow soldering or dip soldering. The patch fixture is an instrument that assists in positioning the circuit board and completing the component patching. At present, the commonly used fixtures in manual PCB patching are mainly PCB limit racks, which fix the circuit board by pressing or clamping. After applying solder paste on the surface of the circuit board, the components are attached to the corresponding area. After one side is attached, it is turned over together with the PCB limit rack to perform back-side patching. For example, a PCBA patch processing jig with application number CN202322283045.1 includes a processing frame and multiple sets of jig frames evenly arranged in the processing frame. Two sets of fixing plates for clamping and fixing the printed circuit board are symmetrically arranged in the inner cavity of the jig frame. A connecting shaft is fixedly connected to the outside of the jig frame, and the connecting shaft movably penetrates the processing frame and is rotatably connected to it through a bearing. A motor for driving the connecting shaft to rotate is also fixedly connected to the outside of the processing frame, and a slot is penetrated on the other side of the jig frame. In actual applications, the applicant found that the above common types of jigs for circuit board patch have the following problems:

[0003] When mounting the chip, first apply a layer of solder paste on the mounting area, then press the corresponding electrical components on the surface of the solder paste, and after mounting one side, flip it over to mount the back side. Due to factors such as insufficient adhesion of components after solder paste coating, jitter during flipping, large-volume component patches sagging due to gravity, and squeezing of the circuit board during mounting on the back, the mounted components below may fall off, shift, or not fully adhere to the mounting area of ​​the circuit board, thus affecting the mounting quality of the circuit board. Utility Model Content

[0004] The utility model aims to provide a jig for processing circuit board patch, so as to solve the problems of the existing circuit board patch jig proposed in the above background technology that the components already patched fall off, shift and are not fully adhered when flipping the patch.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a jig for circuit board patch processing, comprising a jig base plate and support legs fixedly arranged on both sides of the jig base plate, two circuit board positioning slots are provided in the middle of the jig base plate, four corners of the two circuit board positioning slots are equipped with clamping components for fixing the patch circuit board, a partition pad is fixedly installed between the two circuit board positioning slots, a pressure cover plate is installed on the partition pad, locking areas are fixedly arranged on both sides of the top of the pressure cover plate, evenly distributed adjustment screw holes are provided on the surface of the locking area, and a pressure maintaining component for clamping components is threadedly connected to the adjustment screw holes, and a plurality of suction components for assisting the fixing of the pressure cover plate are fixedly arranged between the jig base plate and the pressure cover plate.

[0006] Preferably, the clamping assembly includes a center column and a side clamping piece sleeved on the center column, an insulating rubber pad is fixedly provided on the bottom of the side clamping piece, and an adjusting nut is threadedly connected to the top of the center column; the circuit board can be quickly clamped and fixed, and the circuit board is convenient to disassemble and assemble.

[0007] Preferably, the pressure maintaining assembly includes a threaded rod and a knob cap fixedly arranged at the top end of the threaded rod, the bottom end of the threaded rod is sleeved with a rubber patch pressure head, and the threaded rod is threadedly connected to the adjusting screw hole; when the patch is turned over, the electrical components that are easy to shift can be auxiliary pressure maintained and fixed to prevent loosening.

[0008] Preferably, the card suction assembly includes a side card block and a side card frame matching the side card block, the bottom end of the side card block is fixedly provided with a magnet block, the bottom of the side card frame is fixedly provided with an iron block, the magnet block matches the iron block, the side card block is fixedly mounted on the pressure cover plate, and the side card frame is fixedly mounted on the jig bottom plate; it can assist the pressure cover plate in positioning and fixing, and it is not easy to loosen and fall off when the patch is flipped.

[0009] Preferably, a fool-proof notch is fixedly provided on one side of the circuit board positioning slot, so that the circuit board can be accurately positioned and placed, and the fixture is easier to use.

[0010] Preferably, a plurality of card insertion columns are fixedly provided in the middle of the bottom end of the pressure cover plate, and a plurality of card insertion holes are opened on the surface of the separation pad, and the card insertion columns match the card insertion holes; the pressure cover plate can be quickly positioned and installed, and it is flexible to use, which can improve the work efficiency of circuit board patch.

[0011] Preferably, a handle is fixedly provided in the middle of the top of the pressure cover plate, which facilitates the disassembly and placement of the pressure cover plate and is easy to use.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The circuit board patch jig is additionally provided with a detachable pressure cover plate, and a locking pressure area is additionally provided on the pressure cover plate. After the patch on the front side of the circuit board is completed, auxiliary pressure maintenance can be performed through the pressure maintenance component according to the position of the patch of components that are easy to fall off or shift, thereby reducing the problem of loosening and falling off of the mounted components due to factors such as vibration during patching on the back when the patch jig is turned over for patching. The patch is positioned accurately, and the positioning and disassembly of the circuit board on the jig is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the disassembled structure of the fixture of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the pressure-maintaining component of the utility model;

[0016] Figure 3 This is a schematic diagram of the bottom structure of the bottom plate of the fixture of the utility model;

[0017] Figure 4 This is a structural schematic diagram of the card suction assembly of the utility model;

[0018] Figure 5 It is an enlarged view of part A of the utility model.

[0019] In the figure: 1. fixture base plate; 2. support leg; 3. pressure cover plate; 4. locking and pressing area; 5. adjustment screw hole; 6. pressure maintaining assembly; 61. threaded rod; 62. knob cap; 63. rubber patch pressure head; 7. card insertion column; 8. handle; 9. side clamp block; 10. side clamp frame; 11. partition pad; 12. card insertion hole; 13. circuit board positioning slot; 14. center column; 15. side pressure piece; 16. insulating rubber pad; 17. adjustment nut; 18. iron block; 19. magnet block; 20. anti-foolproof notch. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Example

[0022] See also Figure 1-5The utility model provides a jig for circuit board patch processing, including a jig base plate 1 and a support frame 2 fixedly arranged on both sides of the jig base plate 1, two circuit board positioning slots 13 are provided in the middle of the jig base plate 1, and four corners of the two circuit board positioning slots 13 are installed with clamping components for fixing the patch circuit board, a partition pad 11 is fixedly installed between the two circuit board positioning slots 13, a pressure cover plate 3 is installed on the partition pad 11, locking areas 4 are fixedly arranged on both sides of the top of the pressure cover plate 3, and evenly distributed adjustment screw holes 5 are provided on the surface of the locking area 4, and a pressure maintaining component 6 for clamping components is threadedly connected on the adjustment screw hole 5, a plurality of card suction components for assisting the fixing of the pressure cover plate 3 are fixedly arranged between the jig base plate 1 and the pressure cover plate 3, and a fool-proof notch 20 is fixedly arranged on one side of the circuit board positioning slot 13.

[0023] See also Figure 1 and Figure 5 Further, the clamping assembly includes a central column 14 and a side pressing piece 15 sleeved on the central column 14, an insulating rubber pad 16 is fixedly provided at the bottom of the side pressing piece 15, and an adjusting nut 17 is threadedly connected to the top of the central column 14;

[0024] After the circuit board to be mounted is placed in the circuit board positioning slot 13, the side pressing piece 15 is rotated to make the insulating rubber pad 16 face the edge of the circuit board to be mounted, and the circuit board to be mounted is pressed from the four corners. The adjusting nut 17 is used to adjust the tightness of the side pressing piece 15. The pressing is stable and reliable, and it is easy to use.

[0025] See also Figure 1 and Figure 2 Further, the pressure-maintaining assembly 6 includes a threaded rod 61 and a knob cap 62 fixedly arranged at the top of the threaded rod 61, a colloid patch pressure head 63 is sleeved at the bottom end of the threaded rod 61, and the threaded rod 61 is threadedly connected to the adjusting screw hole 5;

[0026] The pressure-maintaining component 6 can be used to fix large-volume capacitors, resistors, control chips and other patches. These patch components are large in size and relatively heavy in weight. After patching, they are prone to displacement and falling off after being flipped. Before patching, according to the position of these components, turn the knob cap 62 in advance, screw the threaded rod 61 into the corresponding adjustment screw hole 5 to an appropriate depth, and then put the glue patch press head 63 on the threaded rod 61 from the bottom end of the pressure cover plate 3. After the pressure cover plate 3 is closed, the glue patch press head 63 will be pressed on the surface of this type of component to achieve auxiliary fixation and prevent it from loosening and falling off when flipping the patch.

[0027] See also Figure 1 and Figure 4Further, the card suction assembly includes a side card block 9 and a side card frame 10 matched with the side card block 9, a magnet block 19 is fixedly provided at the bottom end of the side card block 9, an iron block 18 is fixedly provided at the bottom of the side card frame 10, the magnet block 19 matches the iron block 18, the side card block 9 is fixedly installed on the pressure cover plate 3, and the side card frame 10 is fixedly installed on the fixture bottom plate 1;

[0028] When the cover plate 3 is inserted on the separation pad 11, the side clamp block 9 will be inserted into the side clamp frame 10. At this time, the magnet block 19 will absorb the iron block 18, thereby realizing convenient auxiliary fixation of the cover plate 3, improving the stability of the cover plate 3 after insertion, and preventing it from falling off when flipped.

[0029] See also Figure 1 Further, a plurality of card insertion columns 7 are fixedly provided in the middle of the bottom end of the pressure cover plate 3, a plurality of card insertion holes 12 are opened on the surface of the separation pad 11, the card insertion columns 7 match the card insertion holes 12, and a handle 8 is fixedly provided in the middle of the top end of the pressure cover plate 3;

[0030] When the cover plate 3 is covered on the fixture bottom plate 1, the card insertion column 7 will be stuck in the card insertion hole 12, so as to fix the middle part of the cover plate 3, and the cover plate 3 can be quickly positioned and installed, and the positioning and disassembly are convenient.

[0031] When the embodiment of the present application is used: the front side of the jig bottom plate 1 is placed flat with the front side facing upwards, the circuit board with the patch is placed in the circuit board positioning slot 13, and then the side pressing pieces 15 are rotated in sequence to make the insulating rubber pad 16 face the edge of the circuit board to be patched, and the four corners of the circuit board to be patched are pressed tightly. At this time, the circuit board to be patched is fixed in the circuit board positioning slot 13. After the staff applies solder paste on the patch area of ​​the circuit board to be patched, the component patches can be placed. When the front patch is placed, take it out The cover plate 3 is pressed so that the card insertion column 7 is inserted into the card insertion hole 12, and the cover plate 3 is covered on the fixture bottom plate 1. At this time, the locking area 4 will face the circuit board to be patched, and the glue patch pressing head 63 will contact and press tightly with the top of the component patch to prevent the already patched components from falling off due to shaking, squeezing or gravity when turning over the patch. The fixture bottom plate 1 can be turned over as a whole by holding the support frame 2 to achieve the patch under the circuit board. There is no need to re-fix the circuit board, which can improve the patch efficiency and patch stability.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A jig for processing printed circuit boards, comprising a jig base plate (1) and support legs (2) fixedly arranged on both sides of the jig base plate (1), characterized in that: Two circuit board positioning slots (13) are provided in the middle of the jig base plate (1), and four corners of the two circuit board positioning slots (13) are installed with clamping components for fixing the SMD circuit board. A partition pad (11) is fixedly installed between the two circuit board positioning slots (13), and a pressure cover plate (3) is installed on the partition pad (11). Locking areas (4) are fixedly provided on both sides of the top of the pressure cover plate (3), and the surface of the locking area (4) is provided with evenly distributed adjustment screw holes (5). The adjustment screw holes (5) are threadedly connected with a pressure maintaining component (6) for clamping components. A plurality of suction components for assisting the fixing of the pressure cover plate (3) are fixedly provided between the jig base plate (1) and the pressure cover plate (3).

2. A jig for processing circuit board chips according to claim 1, characterized in that: The clamping assembly comprises a central column (14) and a side pressing piece (15) sleeved on the central column (14); an insulating rubber pad (16) is fixedly provided at the bottom of the side pressing piece (15); and an adjusting nut (17) is threadedly connected to the top of the central column (14).

3. A jig for processing circuit board chips according to claim 1, characterized in that: The pressure-maintaining assembly (6) comprises a threaded rod (61) and a knob cap (62) fixedly arranged at the top end of the threaded rod (61); a rubber patch pressure head (63) is sleeved at the bottom end of the threaded rod (61); and the threaded rod (61) is threadedly connected to the adjusting screw hole (5).

4. A jig for processing circuit board chips according to claim 1, characterized in that: The card suction assembly comprises a side card block (9) and a side card frame (10) matched with the side card block (9); a magnet block (19) is fixedly arranged at the bottom end of the side card block (9); an iron block (18) is fixedly arranged at the bottom of the side card frame (10); the magnet block (19) matches the iron block (18); the side card block (9) is fixedly mounted on the pressure cover plate (3); and the side card frame (10) is fixedly mounted on the fixture bottom plate (1).

5. The circuit board patch processing jig according to claim 1, characterized in that: An anti-mistake notch (20) is fixedly provided on one side of the circuit board positioning slot (13).

6. A jig for processing circuit board patches according to claim 1, characterized in that: A plurality of card insertion columns (7) are fixedly arranged in the middle of the bottom end of the pressure cover plate (3), a plurality of card insertion holes (12) are opened on the surface of the separation pad (11), and the card insertion columns (7) match the card insertion holes (12).

7. The jig for processing circuit board patches according to claim 1, characterized in that: A handle (8) is fixedly arranged in the middle of the top end of the gland plate (3).

Images