Switch mainboard anti-deformation mechanism

Abstract

The utility model relates to the technical field of mainboard welding, in particular to an anti-deformation mechanism for a switch mainboard, which comprises a rectangular frame, and the rectangular frame comprises two groups of front and back jig frame rods which are arranged on the front and back sides and are distributed in parallel and two groups of left and right jig frame rods which are arranged on the left and right sides and are distributed in parallel. The vertical connecting ends of the front-back jig frame rods and the vertical connecting ends of the left-right jig frame rods are detachably connected in a Z-shaped attaching mode, a plurality of sets of jig beams distributed in parallel are movably arranged between the adjacent front-back jig frame rods, a plurality of sets of PINs are movably arranged on the jig beams in the length direction of the jig beams, the PINs are connected with the PCB, and the PCB is connected with the front-back jig frame rods. A movable adjusting piece is arranged on the jig cross beam corresponding to the PIN pin; and four groups of supporting columns are arranged at four corners of the rectangular frame in a lifting manner. The device can reduce the labor intensity of workers, reduce the material loss, improve the maintenance efficiency and improve the maintenance quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to mainboard welding technical field, concretely is a switch mainboard anti -deformation mechanism. BACKGROUND

[0002] With the high -speed development of integrated circuit etc. technology, the performance of chip electronic device etc. greatly promotes, with the following PCBA size requirement is more and more big, leading to electronic device power greatly promotes.

[0003] The existing substrate size is more and more big, and the device density is more and more high, and the product weight is more and more heavy, when exceeding 140 DEG C in the maintenance heating process, the PCBA resin material will soften, and the substrate surface mounting device is unevenly distributed, and the weight is different, leading to the deformation of substrate in the heating process, and the BGA tin ball and substrate are not coplanar welding process, and the welding defects such as (tin, air welding, float high) are prone to occur.

[0004] Therefore, in view of the above problems, the technical scheme provides a switch mainboard anti -deformation mechanism. INVENTION CONTENTS

[0005] The utility model discloses a kind of switch mainboard anti -deformation mechanisms, to solve the problem raised in above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: including rectangular frame, rectangular frame includes two groups of front and rear jig frame rods placed in front and rear parallel distribution and two groups of left and right jig frame rods placed in left and right parallel distribution, the vertical connection end of front and rear jig frame rod and left and right jig frame rod adopts Z type sticking type dismounting connection, that is, keep the consistent thickness of front and rear jig frame rod and left and right jig frame rod and firmly connected, a plurality of groups of jig cross beams are movably arranged between adjacent front and rear jig frame rods, a plurality of groups of PIN pins are movably arranged on the length direction of jig cross beam, PIN pin is connected with PCB board, mobile adjusting piece is arranged on the jig cross beam corresponding to PIN pin, mobile adjusting piece is used to control the position of PIN pin placed on jig cross beam, and it is lifted, positioned, to ensure that it is accurately connected to the corresponding position on PCB board, four groups of support columns are lifted in the four corners of rectangular frame, the height of support column is controlled, and then the placement height of rectangular frame is adjusted, that is, PIN pin is supported, in turn, the position of mobile adjusting piece on PIN pin can be visually seen, to prevent collision when moving, by installing switch main body substrate on the rectangular frame, then it is positioned and clamped from multiple angle directions, to prevent deformation when processing and heating.

[0007] As a further embodiment of this utility model: the vertical connection ends of the front and rear jig frame rods and the left and right jig frame rods are all set as symmetrical L-shaped structures, and a group of through threaded holes are opened at the structure.

[0008] As a further embodiment of this utility model: L-shaped connecting plates are symmetrically installed at both ends of the jig beam. The ends of the connecting plates are in contact with the sides of the front and rear jig frame rods. Meanwhile, the surfaces of the front and rear jig frame rods are provided with movable grooves distributed along their length. Locking screws are threadedly connected to the connecting plates. The ends of the locking screws pass through the movable grooves and are threadedly connected to locking nuts.

[0009] As a further embodiment of this utility model: the movable adjustment component includes a positioning screw connected and fitted to the top of the PIN pin. The positioning screw moves through a movable slide groove two opened on the jig beam. A locking nut is also threaded onto the top of the positioning screw and placed outside the movable slide groove two. A slider is provided inside the movable slide groove two corresponding to the positioning screw. The positioning screw passes through the slider. By rotating the locking nut, the position of the positioning screw on the movable slide groove two is limited. By adjusting the height of the positioning screw, the corresponding position of the PIN pin on the PCB board is adjusted for accurate connection and installation.

[0010] As a further embodiment of this utility model: telescopic holes are provided at the ends of the left and right jig frame rods corresponding to the support column. The support column moves along the telescopic holes. A positioning hole is provided on the support column along its length direction. A set of limiting screws is threaded to one side of the middle of the telescopic hole. The position of the support column inside the telescopic hole is adjusted, and then the limiting screws are rotated to insert their ends into the positioning holes, thereby limiting the height of the support column and thus realizing the height adjustment of the rectangular frame.

[0011] As a further improvement of this utility model, the support column is engraved with scale lines along its length, so that precise adjustment can be made by means of the scale lines when adjusting the height.

[0012] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, can be quickly disassembled and repaired, and is very convenient to install with the BGA rework station, enabling rapid positioning, repair and replacement of BGA for various products.

[0013] The PI N pin design and screw-type installation make operation simple and improve the efficiency of substrate positioning and maintenance.

[0014] The positioning is simple and easy to operate. After the substrate is heated, the resin material softens and the substrate anti-deformation tooling supports the PIN pins to prevent sagging. The screw holes lock the motherboard to prevent the substrate from deforming and tilting, ensuring that the substrate does not deform during the heating and soldering process, achieving coplanarity between the BGA and the substrate and improving the BGA soldering yield. Attached Figure Description

[0015] Fig. 1 This is a three-dimensional structural diagram of an anti-deformation mechanism for a switch motherboard.

[0016] Fig. 2 This is a partial structural diagram of the connection between the front and rear jig frame rods and the ends of the left and right jig frame rods in an anti-deformation mechanism for a switch motherboard.

[0017] Among them: front and rear jig frame rods 1, left and right jig frame rods 2, jig crossbeam 3, locking screw 4, locking nut 5, PIN pin 6, moving slide groove one 7, support column 8, limit screw 9, positioning screw hole 10, threaded hole group 11, moving slide groove two 12, positioning screw 13. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Please see Figs. 1-2A switch motherboard anti-deformation mechanism includes a rectangular frame. The rectangular frame includes two sets of front and rear jig frame bars 1 arranged parallel to each other on the front and rear sides, and two sets of left and right jig frame bars 2 arranged parallel to each other on the left and right sides. The vertical connection ends of the front and rear jig frame bars 1 and the left and right jig frame bars 2 adopt a Z-shaped fitting and disassembly connection, maintaining a consistent thickness and a stable connection between them. Multiple sets of parallel jig beams 3 are movably arranged between adjacent front and rear jig frame bars 1. Multiple sets of PIN pins 6 are movably arranged along the length of the jig beams 3. The PIN pins 6 are connected to the PCB board. Movable adjustment components are provided on the jig beams 3 corresponding to the PIN pins 6. These components control the position of the PIN pins 6 on the jig beams 3, and adjust their lifting and positioning to ensure accurate connection to the corresponding position on the PCB board. Simultaneously, four sets of support columns 8 are raised and lowered at the four corners of the rectangular frame. By controlling the height of the support columns 8, the placement height of the rectangular frame is adjusted, thus supporting the PIN pins 6 while allowing the PIN pins to be visually observed. The position of the movable adjustment piece on pin 6 is adjusted to prevent collisions during movement. The main switch substrate is mounted on the rectangular frame and then positioned and clamped from multiple angles to prevent deformation during heat processing.

[0023] In this embodiment of the invention, the vertical connection ends of the front and rear jig frame rods 1 and the left and right jig frame rods 2 are all set as symmetrical L-shaped structures, and the structure is provided with a through threaded hole group 11. When the L-shaped structures corresponding to the front and rear jig frame rods 1 and the left and right jig frame rods 2 are fitted together, the threaded rods are installed towards the inside of the threaded hole group 11 to securely connect them.

[0024] Specifically, L-shaped connecting plates are symmetrically installed at both ends of the jig beam 3. The ends of the connecting plates are in contact with the sides of the front and rear jig frame rods 1. Meanwhile, the surfaces of the front and rear jig frame rods 1 are provided with movable grooves 7 distributed along their length. Locking screws 4 are threaded onto the connecting plates 7. The ends of the locking screws 4 pass through the movable grooves 7 and are threaded onto the locking nuts 5. That is, the movement of the locking screws 4 is controlled by rotating the locking nuts 5.

[0025] In one embodiment of the present invention, the movable adjustment component includes a positioning screw 13 connected to the top of the PIN pin 6. The positioning screw 13 moves through a movable slide groove 12 formed on the jig beam 3. A locking nut 5 is also threaded onto the top of the positioning screw 13 and placed outside the movable slide groove 12. A slider is provided inside the movable slide groove 12 corresponding to the positioning screw 13. The positioning screw 13 passes through the slider. By rotating the locking nut 5, the position of the positioning screw 13 on the movable slide groove 12 is limited. By adjusting the height of the positioning screw 13, the corresponding position of the PIN pin 6 on the PCB board is adjusted for accurate connection and installation.

[0026] In a preferred embodiment of the present invention, telescopic holes are provided at the ends of the left and right jig frame rods 2 corresponding to the support column 8. The support column 8 moves along the telescopic holes. A positioning hole is provided on the support column 8 along its length direction. A set of limiting screws 9 are threaded to one side of the middle of the telescopic hole. The position of the support column 8 inside the telescopic hole is adjusted, and then the limiting screws 9 are rotated to insert their ends into the positioning holes, thereby limiting the height of the support column 8, that is, realizing the height adjustment of the rectangular frame.

[0027] Specifically, the support column 8 has scale lines engraved along its length, so that precise adjustments can be made by referring to the scale lines when adjusting the height.

[0028] It should be noted that this anti-deformation mechanism is designed based on the main board of the switch.

[0029] The working principle of this utility model is as follows: the main board of the switch is positioned on a rectangular frame and then fixed on a BGA rework machine. A suitable nozzle is selected, the corresponding temperature curve is selected in the equipment startup program, the heating head is positioned, the suction position is set, and the program is run to preheat the board. When the temperature reaches the peak temperature of the melting point of tin, the heating nozzle automatically lifts up, and the suction nozzle automatically drops to pick up the BGA at the repair position. The board is detinned, solder paste is printed, the BGA is positioned, and soldering is performed. The anti-deformation mechanism prevents the board from deforming, which causes stress release and the solder pads to fall off.

[0030] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A deformation-resistant mechanism for a switch motherboard, characterized in that, The rectangular frame includes two sets of front and rear jig frame bars (1) and two sets of left and right jig frame bars (2) arranged in parallel on the front and rear sides. The vertical connection ends of the front and rear jig frame bars (1) and the left and right jig frame bars (2) are connected by Z-shaped fitting and disassembly. Multiple sets of jig beams (3) are arranged in parallel between adjacent front and rear jig frame bars (1). Multiple sets of PIN pins (6) are arranged in the jig beams (3) along their length direction. The PIN pins (6) are connected to the PCB board. The jig beams (3) corresponding to the PIN pins (6) are provided with movable adjustment parts. Four sets of support columns (8) are provided at the four corners of the rectangular frame in a lifting manner.

2. The anti-deformation mechanism for a switch motherboard according to claim 1, characterized in that, The vertical connection ends of the front and rear jig frame rods (1) and the left and right jig frame rods (2) are all set as symmetrical L-shaped structures.

3. The anti-deformation mechanism for a switch motherboard according to claim 2, characterized in that, The two ends of the jig beam (3) are symmetrically equipped with L-shaped connecting plates. The ends of the connecting plates are in contact with the sides of the front and rear jig frame rods (1). The surfaces of the front and rear jig frame rods (1) are provided with movable grooves (7) distributed along their length. The connecting plates (7) are threaded with locking screws (4). The ends of the locking screws (4) pass through the movable grooves (7) and are threaded with locking nuts (5).

4. The anti-deformation mechanism for a switch motherboard according to claim 3, characterized in that, The movable adjustment component includes a positioning screw (13) connected to the top of the PIN pin (6). The positioning screw (13) moves through the movable slide groove two (12) opened on the jig beam (3). The top of the positioning screw (13) is also threaded with a locking nut (5) placed outside the movable slide groove two (12). The movable slide groove two (12) corresponding to the positioning screw (13) is provided with a slider, and the positioning screw (13) passes through the slider.

5. The anti-deformation mechanism for a switch motherboard according to claim 4, characterized in that, The left and right tooling frame rods (2) corresponding to the support column (8) have telescopic holes at their ends. The support column (8) moves along the telescopic holes. The support column (8) has positioning holes along its length direction. A set of limiting screws (9) is threaded to one side of the telescopic hole.

6. The anti-deformation mechanism for a switch motherboard according to claim 5, characterized in that, The support column (8) has markings along its length.

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