Auxiliary tool for repairing jointed printed board

Abstract

The utility model discloses an auxiliary tool for repairing a jointed printed board, which comprises a board body, a plurality of positioning grooves are arranged on the top end face of the board body, the positioning grooves are matched with the printed board in shape, the printed board is embedded in the positioning grooves, and a longitudinal notch for a longitudinal connecting rib on the printed board to penetrate through is arranged between every two vertically adjacent positioning grooves. A first transverse notch used for a first transverse connecting rib on the printed board to penetrate through is formed between every two adjacent left and right positioning grooves, and second transverse notches used for a second transverse connecting rib on the printed board to penetrate through are formed in the positioning grooves located on the two sides. Two process edge placing grooves are formed in the top end face of the board body and located in the left side and the right side of the positioning groove respectively, and two process edges on the printed board are embedded in the two process edge placing grooves respectively. According to the tool, stable matching limiting can be formed on the jointed printed board, the phenomenon of board edge protrusion or board edge layering can be effectively avoided in the repairing process, the production cost is saved, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for electronic components, and more specifically to an auxiliary tooling for rework of panelized printed circuit boards. Background Technology

[0002] As the size of the printed circuit board 100 becomes smaller, in order to facilitate the use of automatic solder paste printers, pick-and-place machines, and other equipment during subsequent mounting, multiple small printed circuit boards are combined into a large board for processing. The combined large board is called a panelized printed circuit board 200. The panelization method is widely used, and the most convenient one is the process edge with connecting ribs. That is, the vertically adjacent printed circuit boards 100 are connected by longitudinal connecting ribs 300, the horizontally adjacent printed circuit boards 100 are connected by the first transverse connecting ribs 400, and the printed circuit boards 100 located on the two sides are connected to the process edges 600 on both sides by the second transverse connecting ribs 500 respectively.

[0003] When reworking finished printed circuit boards (PCBs), the existing through-holes are typically used as internal positioning holes for positioning and fixing the PCB before milling the longitudinal connecting ribs (300mm). When the PCB is small and thin, small panels are difficult to fix, and they tend to wobble during rework, leading to bulges or delamination at the board edges, resulting in product scrap. Using flat-blade pliers to cut away the longitudinal connecting ribs (300mm) also results in delamination at the board edges due to the difficulty in fixing the panels, leading to a high scrap rate.

[0004] Therefore, how to provide a panelized printed circuit board rework auxiliary tooling that can securely fix each printed circuit board and effectively prevent the phenomenon of bulging or delamination at the board edges when dealing with excess longitudinal connecting ribs between printed circuit boards, thereby reducing product scrap rate, saving production costs, and improving product quality, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides an auxiliary tooling for reworking spliced ​​printed circuit boards, which can securely fix each printed circuit board and effectively prevent the phenomenon of bulging or delamination on the board edges when dealing with excess connecting ribs between printed circuit boards, thereby reducing product scrap rate, saving production costs, and improving product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rework auxiliary tooling for a panelized printed circuit board includes: a board body, wherein a plurality of positioning grooves are formed on the top surface of the board body, the positioning grooves are adapted to the shape of the printed circuit board, and the printed circuit board is embedded in the positioning grooves; a longitudinal notch for longitudinal connecting ribs on the printed circuit board is provided between two adjacent vertical positioning grooves; a first transverse notch for first transverse connecting ribs on the printed circuit board is provided between two adjacent left and right positioning grooves; and a second transverse notch for second transverse connecting ribs on the printed circuit board is provided on the positioning grooves on both sides; two process edge placement grooves are formed on the top surface of the board body, the two process edge placement grooves are respectively located on the left and right sides of the positioning grooves, and two process edges on the printed circuit board are respectively embedded in the two process edge placement grooves.

[0008] As can be seen from the above technical solution, compared with the prior art, this utility model discloses an auxiliary tooling for the rework of panelized printed circuit boards. In use, multiple printed circuit boards on the panelized printed circuit board are placed in corresponding positioning slots, longitudinal connecting ribs are placed in longitudinal notches, first transverse connecting ribs are placed in first transverse notches, second transverse connecting ribs are placed in second transverse notches, and process edges are placed in process edge placement slots, thereby realizing the combination of the panelized printed circuit board and the board body. Then, the panelized printed circuit board is effectively limited and fixed by the positioning slots, longitudinal notches, first transverse notches, second transverse notches, and process edge placement slots. After that, the board body is placed on a milling machine to mill off the excess longitudinal connecting ribs, and finally realizes the rework of the panelized printed circuit board.

[0009] Therefore, this tooling can provide stable positioning for the assembled printed circuit board, effectively preventing edge protrusion or delamination, saving production costs and improving product quality.

[0010] Furthermore, the positioning groove has an inner concave hole at its inner corner that allows the inner corner position to form a right angle.

[0011] The beneficial effects of adopting the above technical solution are as follows: Since the printed circuit board has right-angled sides, it is necessary to design concave holes at the inner corners of the positioning grooves to make the inner corners more like right angles, so that each printed circuit board can be accurately embedded into the corresponding positioning groove, so that the positioning groove and the printed circuit board fit better, avoid the printed circuit board from moving during the milling process, and improve the milling accuracy of the printed circuit board.

[0012] Furthermore, a second positioning hole is provided on the bottom surface of the process edge placement groove, which is coaxially arranged with the first positioning hole on the process edge. The pin passes through the first positioning hole and the second positioning hole to fix the process edge in the process edge placement groove.

[0013] The beneficial effects of adopting the above technical solution are: the pins can be used to quickly position and fix the panel printed circuit board and the board body, so as to facilitate milling. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 A schematic diagram of the structure of the panel printing plate provided by this utility model.

[0016] Figure 2 This utility model provides a structural schematic diagram of an auxiliary tooling for the rework of panelized printed circuit boards.

[0017] Figure 3 This is a schematic diagram of the structure of the panel printed circuit board after the longitudinal connecting ribs have been milled off. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this utility model is to design a fixture that can fix the printed circuit boards 100 securely. When using this fixture to repair printed circuit boards and deal with excess longitudinal connecting ribs between printed circuit boards 100, it can effectively prevent the phenomenon of bulging or delamination on the board edges, reduce the product scrap rate, save production costs, and improve product quality.

[0020] like Figures 1-3 As shown in the figure, this utility model embodiment discloses an auxiliary tooling for rework of panelized printed circuit boards, including: a board body 1, the material of which can be FR4 board commonly used in printed circuit board factories, and the copper foil on the surface is etched clean. The board body is processed and manufactured using printed circuit board processing equipment. The thickness of the FR4 board is 3.0mm, and the thickness of the panelized printed circuit board is 1.0mm.

[0021] Multiple positioning grooves 11 are provided on the top surface of the board body 1. The positioning grooves 11 are adapted to the shape of the printed circuit board 100. The depth of the grooves is about 0.5mm greater than the actual thickness of the printed circuit board. The dimensional error of the positioning grooves 11 is within the range of 0 to +0.1mm. The printed circuit board 100 is embedded in the positioning grooves 11. A longitudinal notch 12 is provided between two adjacent positioning grooves 11 on the top and bottom for the longitudinal connecting ribs 300 on the printed circuit board 100 to pass through. A first transverse notch 13 is provided between two adjacent positioning grooves 11 on the left and right for the first transverse connecting ribs 400 on the printed circuit board 100 to pass through. The positioning grooves 11 on both sides are provided with a second transverse notch 14 for the second transverse connecting ribs 500 on the printed circuit board 100 to pass through. Two process edge placement grooves 15 are provided on the top surface of the board body 1. The two process edge placement grooves 15 are located on the left and right sides of the positioning grooves 11 respectively. The two process edges 600 on the printed circuit board 100 are respectively embedded in the two process edge placement grooves 15.

[0022] A concave hole 16 is provided at the inner corner of the positioning groove 11, which can make the inner corner position form a right angle.

[0023] A second positioning hole 151 is provided on the bottom surface of the process edge placement groove 15, which is coaxially arranged with the first positioning hole 6001 on the process edge 600. A pin passes through the first positioning hole 6001 and the second positioning hole 151 to fix the process edge 600 in the process edge placement groove 15.

[0024] In use, the tooling is stacked together with the PCB, and pins are used to fix the tooling to the PCB. The PCB is then fixed to the milling table, and the unwanted longitudinal ribs are milled off using a milling machine to complete the rework operation. Figure 3 As shown.

[0025] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A panelized printed board repair auxiliary tool, characterized by, Include: The plate body (1), a plurality of positioning grooves (11) are opened on the top end face of the plate body (1), the positioning grooves (11) are adapted to the shape of the printed board (100), and the printed board (100) is embedded in the positioning groove (11), and a longitudinal gap (12) for the longitudinal connecting rib (300) on the printed board (100) is arranged between the upper and lower adjacent two positioning grooves (11), a first transverse gap (13) for the first transverse connecting rib (400) on the printed board (100) is arranged between the left and right adjacent two positioning grooves (11), and the positioning grooves (11) on both sides are provided with the second transverse gap (14) for the second transverse connecting rib (500) on the printed board (100); Two process edge placing grooves (15) are opened on the top end face of the plate body (1), two process edge placing grooves (15) are respectively located on the left and right sides of the positioning groove (11), and two process edges (600) on the printed board (100) are respectively embedded in two process edge placing grooves (15).

2. The patching auxiliary tool for a patched printed circuit board according to claim 1, wherein The inner corner of the positioning groove (11) is provided with an inner recess hole (16) capable of forming a right angle at the inner corner position.

3. The patching auxiliary tool for a patchwork printed board according to claim 1 or 2, wherein The bottom surface of the process edge placing groove (15) is provided with a second positioning hole (151) coaxially arranged with the first positioning hole (6001) on the process edge (600), and the pin passes through the first positioning hole (6001) and the second positioning hole (151) to fix the process edge (600) in the process edge placing groove (15).

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