CN-224234061-U - Positioning fixture special for brown-out of PCB buried copper block

CN224234061UCN 224234061 UCN224234061 UCN 224234061UCN-224234061-U

Abstract

The utility model relates to the technical field of positioning fixtures, and discloses a special positioning fixture for the browning of a PCB (printed circuit board) embedded copper block, which comprises a substrate, wherein a clamping plate is attached to the top of the substrate, the utility model presets depth control grooves with different sizes on an assembly plate, and then the assembly block slides on a second positioning column to enable the assembly block to drive the assembly plate to slide into the assembly groove and enable a positioning block to be aligned with a limiting groove, then, the positioning block is pushed to reset and slide in the spring groove by utilizing the restoring force of the spring, and penetrates through the limiting groove, so that the assembly plate is fixed on the base plate, and the assembly plate with the deep control grooves of different sizes is replaced, so that the positioning fixture can carry out browning treatment on copper blocks of different sizes, and the universality and the flexibility of the positioning fixture are improved.

Inventors

LIU LINWU
Tan Caiwen
LI WENTAO
ZHENG XIONG

Assignees

珠海中京电子电路有限公司

Dates

Publication Date: 20260512
Application Date: 20250526

Claims (6)

1. A positioning clamp special for the browning of a PCB buried copper block comprises a substrate (1) and is characterized in that clamping plates (2) are attached to the top of the substrate (1), four groups of first positioning columns (4) are symmetrically arranged on one side surface of the substrate (1) facing the clamping plates (2) at equal intervals, four groups of positioning grooves (3) are formed in one side surface of the clamping plates (2) facing the first positioning columns (4), the four groups of first positioning columns (4) are respectively and slidably connected in the four groups of positioning grooves (3), two assembly matching plates (9) are attached to the substrate (1), and a connecting assembly (5) for interconnection is arranged between the substrate (1) and the assembly plates (9).
2. The positioning fixture special for the brown-out of the PCB buried copper block, which is characterized in that the connecting assembly (5) comprises two groups of assembly grooves (51) which are respectively formed in the surfaces of the front end base plate (1) and the rear end base plate (9) of the two groups of assembly grooves (51), two groups of second positioning columns (52) are symmetrically arranged on one side surface of the assembly grooves (51) facing the clamping plate (2), assembly blocks (53) are slidably connected to the two groups of second positioning columns (52), one side surface of the two groups of assembly blocks (53) facing the assembly plate (9) is fixedly connected with the outer wall of the assembly plate (9), spring grooves (54) are formed in one end surfaces of the two groups of assembly blocks (53) facing away from the assembly plate (9), springs (55) are fixedly connected to the inner walls of the two groups of the spring grooves (54), positioning blocks (56) are slidably connected to the other ends of the springs (55), and limit grooves (57) are formed in the inner walls of the assembly grooves (51) corresponding to the outer end surfaces of the positioning blocks (56).
3. The positioning fixture special for the brown-out of the PCB buried copper block according to claim 2, wherein the positioning block (56) is of rectangular design, and through holes matched with the positioning block (56) are formed in the limiting groove (57) and the spring groove (54).
4. The positioning fixture special for the browning of the PCB buried copper block according to claim 2, wherein one end of the spring (55) is welded on the inner wall of the spring groove (54), and the other end of the spring (55) is welded on the inner end surface of the positioning block (56).
5. The positioning fixture special for the brown-out of the PCB buried copper block according to claim 1 is characterized in that a plurality of groups of depth control grooves (6) are formed in the surface of one side, facing the clamping plate (2), of the two groups of assembly plates (9) at equal intervals, copper blocks (7) are placed in the plurality of groups of depth control grooves (6), and drain holes (8) are formed in the inner walls of the depth control grooves (6) corresponding to the surfaces of the bottom ends of the copper blocks (7).
6. The positioning fixture special for the browning of the PCB buried copper block according to claim 5 is characterized in that the groove spacing of the depth control groove (6) is 28mm, and the groove edge spacing of the depth control groove (6) is 50mm.

Description

Positioning fixture special for brown-out of PCB buried copper block Technical Field The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture special for browning of a PCB buried copper block. Background At the moment of rapid development of electronic information technology, PCBs are rapidly evolving toward high density, high precision, and multifunctionality as key components of electronic devices. The copper block burying technology can effectively improve the heat dissipation performance, the electric conductivity and the mechanical strength of the PCB, and is widely applied to the field of high-end PCB manufacturing. The browning process is used as an important link in PCB production, and has the function of forming a uniform oxide layer on the surface of copper so as to enhance the binding force of the copper layer and materials such as resin. In the PCB buried copper block browning process, the traditional positioning clamp is designed in a modularized disassembly manner due to the lack of a fixed clamping structure, and cannot be flexibly disassembled and reassembled according to the length, width, height and size differences of the copper block, so that the positioning clamp is poor in universality and flexibility, and therefore, a special positioning clamp for PCB buried copper block browning is provided by the technical field personnel to solve the problems in the background art. Disclosure of utility model The utility model aims to provide a positioning clamp special for the browning of a PCB buried copper block, which solves the problem that a fixed clamping structure of the positioning clamp in the prior art cannot be flexibly split and recombined according to the length, width, height and size difference of the copper block due to the fact that the positioning clamp is in a modularized disassembly design. The utility model provides a special positioning fixture for browning of a PCB (printed Circuit Board) embedded copper block, which comprises a substrate, wherein a clamping plate is attached to the top of the substrate, four groups of first positioning columns are symmetrically arranged on the surface of one side of the substrate facing the clamping plate at equal intervals, four groups of positioning grooves are formed in the surface of one side of the clamping plate facing the first positioning columns, the four groups of first positioning columns are respectively and slidably connected in the four groups of positioning grooves, two assembly plates are attached to the substrate, and a connecting assembly for interconnection is arranged between the substrate and the assembly plates. As the preference of above-mentioned technical scheme, coupling assembling is including seting up respectively two sets of assembly grooves on the terminal substrate surface around two equipment match plates, two sets of all symmetry are provided with two sets of second reference columns on the one side surface of assembly groove orientation splint, two sets of on the second reference column all sliding connection have the assembly piece, two sets of the one side surface of assembly piece orientation match plate all with assembly plate outer wall fixed connection, two sets of assembly piece face of deviating from the one end surface of assembly plate all has been seting up the spring groove, two sets of equal fixedly connected with spring on the spring groove inner wall, two sets of the equal fixedly connected with locating piece of spring other end, and locating piece all with spring groove sliding connection, two sets of the spacing groove has all been setted up on the assembly groove inner wall that the locating piece outer end surface corresponds. As the optimization of the technical scheme, the positioning block is of rectangular design, and through holes matched with the positioning block are formed in the limiting groove and the spring groove. Preferably, one end of the spring is welded on the inner wall of the spring groove, and the other end of the spring is welded on the inner end surface of the positioning block. As the optimization of the technical scheme, a plurality of groups of depth control grooves are formed in the surface of one side of the assembly plate, facing the clamping plate, at equal intervals, copper blocks are placed in the plurality of groups of depth control grooves, and liquid discharge holes are formed in the inner walls of the depth control grooves corresponding to the surfaces of the bottom ends of the copper blocks. As the preferable mode of the technical scheme, the groove spacing of the depth control groove is 28mm, and the groove edge distance of the depth control groove is 50mm. Compared with the prior art, the utility model has the beneficial effects that: 1. According to the utility model, the depth control grooves with different sizes are preset on the assembly plate, then the assembly block is slid on the second p