A kind of connector assembly centering jig and assembly method thereof

Abstract

The present invention discloses a centering jig for connector assembly and an assembly method thereof, comprising a jig plate, a pressure plate, a centering and closing mechanism and a pressing mechanism, wherein the jig plate is used to position a substrate, a PCB board and a connector, the pressure plate is inserted and arranged on the jig plate and is used to press the substrate, the centering and closing mechanism is installed on the lower end of the jig plate and is used to center and adjust the insertion accuracy of the connector in the X direction, the pressing mechanism is inserted and arranged on the jig plate and is used to press the product to be assembled after centering, a guiding space for the connector to move in the Y direction is provided below the pressure plate, and the pressure plate and the pressing assembly are inserted and arranged on the jig plate in steps. In the above manner, the present invention is suitable for electronic components that require precise positioning and cannot be mounted in one time and require secondary assembly and adjustment, and can press and attach stable components in real time, thereby perfectly meeting production requirements and avoiding rework.

Description

Technical Field

[0001] The present invention relates to the technical field of connector assembly, and in particular to a connector assembly centering jig and an assembly method thereof. Background Art

[0002] like Figure 1 As shown, the current connector 01 has a row of terminal solder feet a and b at the upper and lower ends of the rear end. The current process cannot be directly mounted. It is necessary to consider the relative position of the connector 01 and the PCB board 02 when assembling to avoid affecting the assembly at the rear end. The current surface mount manufacturers mostly use placement machine labeling errors to control the relative position of such components. However, since the product needs to be assembled after mounting, it is impossible to directly perform alignment mounting. As for the relative position of such connectors after mounting, no manufacturer has tried to use tools for assembly alignment design. Due to its functional needs, component design is completely dominated by functional design, resulting in the risk of defective scrap easily generated in the conventional production method of assembly during the manufacturing process. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a connector assembly centering jig and an assembly method thereof, which is suitable for electronic components that require precise positioning and cannot be mounted in one go and require secondary assembly adjustment. It can press and attach stable components in real time, thereby perfectly meeting production requirements and avoiding rework or even unqualified assembly components.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: providing a connector assembly centering jig, including a jig plate, a pressure plate, a centering and closing mechanism and a pressing mechanism, the jig plate is used to position the substrate, the PCB board and the connector, the pressure plate is inserted on the jig plate and used to press the substrate, the centering and closing mechanism is installed at the lower end of the jig plate for centering and adjusting the insertion accuracy of the connector in the X direction, the pressing mechanism is inserted on the jig plate for pressing the product to be assembled after centering, a guide space for the connector to move in the Y direction is provided below the pressure plate, and the pressure plate and the pressing mechanism are inserted on the jig plate in steps.

[0005] Preferably, a connector assembly centering jig further comprises a side pressing mechanism, which is horizontally movably inserted on both sides of the jig plate in the Y direction and is used for side pressing the connector.

[0006] Preferably, the jig plate includes a substrate groove, a plurality of groups of PCB mounting blocks disposed on both sides of the substrate groove in the Y direction, and connector mounting blocks opposite to the PCB mounting blocks one by one, the PCB mounting blocks are arranged horizontally and avoid the upper and lower pads of the PCB board, each group of connector mounting blocks is provided with two blocks and are arranged vertically, and the height of the connector mounting blocks is set according to the height of the PCB mounting blocks.

[0007] Preferably, an array of Y-direction reference protrusions is provided on both sides of the substrate groove in the Y direction, an X-direction reference protrusion is provided on one side of the substrate groove in the X direction, a reference block capable of sliding in the X direction is horizontally embedded on the jig plate, two X-direction positioning protrusions are provided on the inwardly extending end of the reference block that protrudes upward, and a cover plate is installed on the reference block to prevent the reference block from jumping out.

[0008] Preferably, the pressing plate includes a pressing plate body and a positioning pin installed at the lower end of the pressing plate body, and the jig plate is provided with a first positioning hole plugged with the positioning pin.

[0009] Preferably, the centering and closing mechanism includes two groups of first push blocks and second push blocks that can move in opposite directions relative to each other, both ends of the first push blocks and the second push blocks are arranged at the bottom of the fixture plate through positioning blocks, one end of the first push block is movably clamped on the positioning block, the other end of the first push block is opposite to the positioning block and a avoidance groove is reserved, a return spring is installed in the avoidance groove, the first push block is provided with a second push block installed in the opposite direction, a row of first centering blocks are arranged in an array on the first push block, the first centering block passes through the second push block, and the second push block is provided with an avoidance opening for avoiding the first centering block to facilitate its movement in the X direction, a row of second centering blocks are arranged in an array on the second push block, adjacent first centering blocks and second centering blocks form a group for positioning and centering PCB boards and connectors, and the opposite surfaces of the first centering block and the second centering block are provided with a convex surface for clamping and positioning the PCB board and a concave surface for clamping and positioning the connector.

[0010] Preferably, the pressing mechanism includes a pad, a pressing cover, a positioning column and an elastic pressing assembly, pads are installed on both sides of the lower end of the pressing cover, positioning columns are installed on the pad, and a second positioning hole cooperating with the positioning column is provided on the jig plate, and an elastic pressing assembly for elastically pressing the substrate and the connector is installed in an array on the pressing cover.

[0011] Preferably, the side pressure mechanism includes a side pressure plate, a guide positioning assembly installed at both ends of the side pressure plate and sliding along the Y direction of the jig plate, and a side pressure material assembly installed at the side end of the side pressure plate and opposite to the connector one by one, and the jig plate is provided with a guide groove for facilitating the sliding of the guide positioning assembly and a third positioning hole for positioning the guide positioning assembly.

[0012] An assembly method for a connector assembly centering jig, characterized in that it comprises the following steps:

[0013] S1, PCB board positioning, placing the integrated substrate and PCB board on the substrate slot and PCB mounting block of the fixture plate, and limiting their X and Y positions, with the two sides of the PCB board as the reference;

[0014] S2, connector placement, placing the connector on the connector mounting block and opposite to the PCB board;

[0015] S3, placing the pressing plate, and the pressing plate body presses the substrate;

[0016] S4, insert the connector into place from both sides of the fixture plate in the Y direction through the external push plate, that is, the upper and lower rows of terminal pins a and b of the connector are clamped onto the upper and lower pads of the PCB board;

[0017] S5, centering position, remove the pressing plate body, manually push the first push block and the second push block relative to each other, the first centering block and the second centering block slide relative to each other, the convex surfaces of the two centering blocks first contact the two sides of the PCB board as the positioning reference, the concave surfaces of the two centering blocks press against the two sides of the connector and stop moving, and the position correction is completed;

[0018] S6, vertical pressure maintenance, the handheld pressing mechanism is inserted into the fixture plate, the elastic pressing component on the pressure cover elastically presses the PCB board and the connector in the vertical direction, and the first push block and the second push block automatically return to their original positions;

[0019] S7, lateral pressure maintenance, holding the side pressure mechanism, the guide positioning component is pushed along the guide slot of the fixture plate until it is inserted into the third positioning hole, and the upper pressure component of the side pressure plate elastically presses the connector to ensure the installation position accuracy of the connector and the PCB board;

[0020] S8, welding, the terminal pins of the connector are welded to the pads of the PCB board;

[0021] S9, cutting, cutting the substrate and each PCB board to obtain assembled components.

[0022] Preferably, in step S1, the substrate is placed in the substrate groove, the Y-direction reference protrusions on both sides of the Y-direction limit the Y-direction position, one side of the substrate is close to the X-direction reference protrusion, the reference block is manually pushed, and the X-direction positioning protrusion of the reference block pushes the substrate close to the X-direction reference protrusion to limit the X-direction position of the substrate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The substrate and several PCB boards are designed as one piece, and then cut off after the connectors are assembled. The simultaneous assembly of multiple products can improve efficiency;

[0025] Ensure the relative position between the connector and the PCB board when assembling to avoid affecting the assembly at the back end.

[0026] Ensure assembly accuracy;

[0027] The elastic stabilizing element, i.e., the spring pin, presses the components to be welded vertically and laterally to adjust the position of the components to be welded, preventing the deviation caused by the track connection and the magnetic problems of the north and south poles, and ensuring the relative position accuracy in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure is a schematic diagram of the finished product structure to be assembled using a connector assembly centering jig.

[0029] Figure 2 This is a schematic diagram of a centering fixture used for connector assembly.

[0030] Figure 3 The present invention is a partial structural schematic diagram of a connector assembly centering fixture.

[0031] Figure 4 for Figure 3 A partial enlarged view of area A.

[0032] Figure 5 The present invention is a schematic diagram of a pressure plate structure of a connector assembly centering jig.

[0033] Figure 6 The present invention is a schematic diagram of the structure of a centering and closing mechanism of a connector assembly centering jig.

[0034] Figure 7 The figure is a schematic diagram of the structure of a side pressure mechanism for a connector assembly centering fixture.

[0035] Figure 8 The present invention is an assembly state diagram of a connector assembly centering jig. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0037] See also Figures 1 to 8 , the embodiment of the present invention includes:

[0038] A connector assembly centering jig comprises a jig plate 1 for positioning a substrate 03, a PCB board 02 and a connector 01, a pressing plate 2 inserted on the jig plate 1 and used to press the substrate 03, a centering and closing mechanism 3 installed at the lower end of the jig plate 1 for centering and adjusting the insertion accuracy of the connector 01 in the X direction, a pressing mechanism 4 inserted on the jig plate 1 and used to press the product to be assembled after centering, and a side pressing mechanism 5 horizontally movably inserted on both sides of the jig plate 1 in the Y direction and used to side press the connector 01, a guiding space is provided below the pressing plate 2 for facilitating the movement of the connector 01 in the Y direction, the pressing plate 2 and the pressing mechanism 4 are inserted into the jig plate 1 in steps, a pressure cover 2 presses the substrate 03, and both ends of the substrate 03 are integrally connected to the PCB board 02, so as to facilitate the connector 01 to move forward and be inserted into the PCB board 02, that is, the upper and lower rows of terminal solder feet of the connector 01 are inserted into the upper and lower solder pads of the PCB board 02.

[0039] The jig plate 1 includes a substrate groove 11, several groups of PCB mounting blocks 12 placed in the Y direction of the substrate groove 11, and connector mounting blocks 13 opposite to the PCB mounting blocks 12 one by one. The PCB mounting blocks 12 are arranged horizontally and avoid the upper and lower pads of the PCB board 02. Each group of connector mounting blocks 13 is provided with two blocks and arranged vertically. The height of the connector mounting block 13 is set according to the height of the PCB mounting block 12 to ensure that the connector 01 placed on the connector mounting block 13 is consistent with the vertical symmetry surface of the PCB board 02 placed on the PCB mounting block 12.

[0040] The substrate groove 11 is provided with an array of Y-direction reference protrusions 110 on both sides in the Y direction, and an X-direction reference protrusion 111 is provided on one side in the X direction of the substrate groove 11. A reference block 6 that can slide in the X direction is horizontally embedded on the fixture plate 1. The inwardly extending end of the reference block 6 is upwardly protruding and provided with two X-direction positioning protrusions 61. The reference block 6 is installed with a cover plate 7 to prevent the reference block 6 from jumping out.

[0041] The pressing plate 2 includes a pressing plate body 21 and a positioning pin 22 installed at the lower end of the pressing plate body 21 . The fixture plate 1 is provided with a first positioning hole 101 for inserting the positioning pin 22 .

[0042] The centering and closing mechanism 3 includes two groups of first push blocks 31 and second push blocks 32 that can move in opposite directions relative to each other. Both ends of the first push blocks 31 and the second push blocks 32 are arranged at the bottom of the fixture plate 1 through positioning blocks 33. One end of the first push block 31 is movably mounted on the positioning block 33. The other end of the first push block 31 is opposite to the positioning block 33 and a avoidance groove is reserved. A return spring is installed in the avoidance groove. The first push block 31 is provided with a second push block 32 installed in the opposite direction to the first push block 31. Under the action of the return spring without external force, the first push block 31 and the second push block 32 are in an open state. A row of first centering blocks 34 are arranged in an array on the first pushing block 31, and the first centering blocks 34 pass through the second pushing block 32. The second pushing block 32 is provided with an avoidance opening 320 for avoiding the first centering blocks 34 and facilitating its movement in the X direction. A row of second centering blocks 35 are arranged in an array on the second pushing block 32. Adjacent first centering blocks 34 and second centering blocks 35 form a group for positioning and centering the PCB board 02 and the connector 01. The opposite surfaces of the first centering block 34 and the second centering block 35 are provided with a convex surface 301 for clamping and positioning the PCB board 02 and a concave surface 302 for clamping and positioning the connector 01.

[0043] The pressing mechanism 4 includes a pad 41, a pressing cover 42, a positioning column 43 and an elastic pressing component 44. Pads 41 are installed on both sides of the lower end of the pressing cover 42, and positioning columns 43 are installed on the pad 41. The jig plate 1 is provided with a second positioning hole 102 that cooperates with the positioning column 43. Elastic pressing components 44 for elastically pressing the substrate 03 and the connector 01 are installed in an array on the pressing cover 42, and the elastic pressing components 44 use spring needles.

[0044] The side pressure mechanism 5 includes a side pressure plate 51, a guide positioning assembly 52 and a side pressure material assembly 53. The side pressure plate 51 is placed on both sides of the jig plate 1Y direction. The guide positioning assemblies 52 are installed on both sides of the side pressure plate 51. The jig plate 1 is provided with a guide groove 103 that cooperates with the guide positioning assembly 52. ​​The groove diameter of the guide groove 103 gradually decreases from the outside to the inside. The inner side of the guide groove 103 is provided with a third positioning hole 104 for locking the placement position of the side pressure plate 51. The apertures of the guide positioning assembly 52 and the third positioning hole 104 are consistent. The side of the side pressure plate 51 facing the product is installed with a side pressure material assembly 53 that is opposite to the connector 01 one by one, and the side pressure material assembly 53 adopts a spring pin.

[0045] An assembly method for a connector assembly centering jig, characterized in that it comprises the following steps:

[0046] S1, positioning the PCB board 02, placing the integrated substrate 03 and the PCB board 02 on the substrate groove 11 and the PCB mounting block 12 of the fixture plate 1, and limiting their X- and Y-direction positions, the substrate 03 is placed in the substrate groove 11, and the Y-direction reference protrusions 110 on both sides of the Y-direction limit the Y-direction position, one side of the substrate 03 is close to the X-direction reference protrusion 111, and the reference block 6 is manually pushed, and the X-direction positioning protrusion 61 of the reference block 6 pushes the substrate 03 to be close to the X-direction reference protrusion 111, and the X-direction position of the substrate 03 is limited, and the two sides of the PCB board 02 are used as the subsequent installation reference;

[0047] S2, placing the connector 01, placing the connector 01 on the connector mounting block 13 and opposite to the PCB board 02;

[0048] S3, placing the pressing plate 2, with the pressing plate body 21 pressing the substrate 03;

[0049] S4, inserting, push the connector 01 into place from both sides of the jig board 1Y direction through the external push plate, that is, the upper and lower rows of terminal soldering feet a and b of the connector 01 are clamped onto the upper and lower soldering pads of the PCB board 02;

[0050] S5, centering position, remove the pressing plate body 21, manually push the first push block 31 and the second push block 32 relative to each other, the first centering block 34 and the second centering block 35 slide relative to each other, the convex surfaces 301 of the two centering blocks first contact the two sides of the PCB board 02 as the positioning reference, the concave surfaces 302 of the two centering blocks press against the two sides of the connector 01 and stop moving, and the position correction is completed;

[0051] S6, vertical pressure maintenance, the hand-held material pressing mechanism 4 is inserted into the fixture plate 1, and the elastic material pressing component 44 on the pressure cover 42 elastically presses the PCB board 02 and the connector 01 in the vertical direction, and the first push block 31 and the second push block 32 automatically return to their original positions;

[0052] S7, lateral pressure maintenance, holding the side pressure mechanism 5, the guide positioning component 52 is pushed along the guide slot 103 of the fixture plate 1 until it is stuck in the third positioning hole 104, and the side pressure component 53 on the side pressure plate 51 elastically presses the connector 01 to ensure the installation position accuracy of the connector 01 and the PCB board 02;

[0053] S8, welding, the jig after centering and pressure holding is transferred to the welding furnace for welding, and the upper and lower rows of solder pins of the connector 01 are welded to the corresponding pads of the PCB board 02;

[0054] S9, cutting, cutting off the substrate 03 from the connectors 01 and the PCB board 02 to obtain assembled components.

[0055] Synchronous assembly of multiple products can improve efficiency. The PCB boards 02 are arranged in array on both sides of the same substrate 03 and are cut off one by one after the assembly and welding are completed.

[0056] In the above, the products to be assembled are the connector 01 and the PCB board 02 which are not fully inserted.

[0057] The present invention discloses a connector assembly centering jig and an assembly method thereof, which are suitable for electronic components that require precise positioning and cannot be mounted in one go and require secondary assembly adjustment. The components can be pressed and attached in real time to stabilize the components according to the design requirements of precise component positioning, thereby perfectly meeting production requirements, avoiding rework or even unqualified assembly components, and directly achieving a yield rate of more than 99.95%.

[0058] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A connector assembly centering jig, characterized in that: It includes a jig plate, a pressing plate, a centering and closing mechanism and a pressing mechanism. The jig plate is used to position a substrate, a PCB board and a connector. The substrate and the PCB board are connected as one body. The pressing plate is inserted on the jig plate and used to press the substrate. The centering and closing mechanism is installed at the lower end of the jig plate and used to adjust the insertion accuracy of the connector in the X direction. The pressing mechanism is inserted on the jig plate and used to press the product to be assembled after centering. A guiding space for the connector to move in the Y direction is provided below the pressing plate. The pressing plate and the pressing mechanism are inserted on the jig plate in steps. It also includes a side pressing mechanism, which is horizontally movably inserted on both sides of the jig plate in the Y direction and is used to side press the connector; The jig plate includes a substrate slot, a plurality of groups of PCB mounting blocks disposed on both sides of the substrate slot in the Y direction, and connector mounting blocks opposite to the PCB mounting blocks one by one, the PCB mounting blocks are arranged horizontally and avoid the upper and lower pads of the PCB board, each group of connector mounting blocks is provided with two blocks and arranged vertically, and the height of the connector mounting blocks is set according to the height of the PCB mounting blocks; The centering and closing mechanism comprises two groups of first push blocks and second push blocks capable of relative movement in opposite directions, both ends of the first push blocks and the second push blocks being arranged at the bottom of the fixture plate through positioning blocks, one end of the first push block being movably clamped on the positioning block, a return spring being pressed between the other end of the first push block and the positioning block, a second push block being arranged on the first push block and being installed in the opposite direction to the first push block, a row of first centering blocks being arranged in an array on the first push block, the first centering blocks passing through the second push block, a avoidance opening being arranged on the second push block for avoiding the first centering blocks and facilitating their movement in the X direction, a row of second centering blocks being arranged in an array on the second push block, adjacent first centering blocks and second centering blocks forming a group for positioning and centering the PCB board and the connector, and the first centering block and the second centering block having opposite surfaces both being provided with a convex surface for clamping and positioning the PCB board and a concave surface for clamping and positioning the connector; The pressing mechanism includes a pad, a pressing cover, a positioning column and an elastic pressing assembly. Pads are installed on both sides of the lower end of the pressing cover, positioning columns are installed on the pad, and second positioning holes matching the positioning columns are provided on the jig plate. The elastic pressing assembly array is installed on the pressing cover for elastically pressing the substrate and the connector. The side pressure mechanism includes a side pressure plate, a guide positioning assembly installed at both ends of the side pressure plate and sliding along the Y direction of the jig plate, and a side pressure material assembly installed at the side end of the side pressure plate and opposite to the connector one by one. The jig plate is provided with a guide groove for facilitating the sliding of the guide positioning assembly and a third positioning hole for positioning the guide positioning assembly.

2. The connector assembly centering jig according to claim 1, characterized in that: The substrate groove is provided with Y-direction reference protrusions in array on both sides in the Y direction, and the substrate groove is provided with an X-direction reference protrusion on one side in the X direction. A reference block capable of sliding in the X direction is horizontally embedded on the fixture plate, and two X-direction positioning protrusions are provided on the inwardly extending end of the reference block, which protrudes upward, and a cover plate is installed on the reference block to prevent the reference block from jumping out.

3. The connector assembly centering jig according to claim 1, characterized in that: The pressing plate comprises a pressing plate body and a positioning pin installed at the lower end of the pressing plate body, and the jig plate is provided with a first positioning hole plugged with the positioning pin.

4. An assembly method using the connector assembly centering jig according to claim 3, characterized in that: The following steps are involved: S1, PCB board positioning, placing the integrated substrate and PCB board on the substrate slot and PCB mounting block of the fixture plate, and limiting their X and Y positions, with the two sides of the PCB board as the reference; S2, connector placement, placing the connector on the connector mounting block and opposite to the PCB board; S3, placing the pressing plate, with the pressing plate body pressing the substrate; S4, insert the connector into place from both sides of the fixture plate in the Y direction through the external push plate, that is, the upper and lower rows of terminal pins a and b of the connector are clamped onto the upper and lower pads of the PCB board; S5, centering position, remove the pressing plate body, manually push the first push block and the second push block relative to each other, the first centering block and the second centering block slide relative to each other, the convex surfaces of the two centering blocks first contact the two sides of the PCB board as the positioning reference, the concave surfaces of the two centering blocks press against the two sides of the connector and stop moving, and the position correction is completed; S6, vertical pressure maintenance, the hand-held material pressing mechanism is inserted into the fixture plate, the elastic material pressing component on the pressure cover elastically presses the PCB board and the connector in the vertical direction, and the first push block and the second push block return to their original positions; S7, lateral pressure maintenance, the guide positioning component is pushed along the guide slot of the fixture plate until it is inserted into the third positioning hole, and the upper pressing component of the side pressure plate elastically presses the connector to ensure the installation position accuracy of the connector and the PCB board; S8, welding, the terminal pins of the connector are welded to the pads of the PCB board; S9, cutting, cutting the substrate and each PCB board to obtain an assembled product.

5. The assembly method of the connector assembly centering jig according to claim 4, characterized in that: In step S1, the substrate is placed in the substrate groove, the Y-direction reference protrusions on both sides of the Y-direction limit the Y-direction position, one side of the substrate is close to the X-direction reference protrusion, the reference block is manually pushed, and the X-direction positioning protrusion of the reference block pushes the substrate close to the X-direction reference protrusion to limit the X-direction position of the substrate.

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