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CN-224218608-U - PCB board selection welds tool heat conduction structure

CN224218608UCN 224218608 UCN224218608 UCN 224218608UCN-224218608-U

Abstract

The utility model discloses a heat conduction structure of a PCB (printed circuit board) selective welding jig, which comprises a heat conduction rod arranged at a notch of a jig substrate, wherein the notch corresponds to a PCB, and a connecting block integrally butted with the heat conduction rod and positioned in a limit groove on the side surface of the notch. The bottom of the jig is hollowed out to form a notch corresponding to the PCB, the PCB is placed in the notch, and positioning is realized through the heat conducting rod and the rotary buckle, so that when the PCB is preheated in the preheating zone, heat can be fully conducted to a product through the notch, and the PCB can be continuously heated by the heat absorbed by the heat conducting rod after being moved out of the preheating zone, so that the heating and the residence time of the PCB in the preheating zone are reduced, and the production efficiency is further improved. In addition, the heat conduction rod adopts the detachable design on the jig to realize the stable support, the high-efficient abundant heat conduction to not unidimensional PCB board, and be convenient for change, clearance to the heat conduction rod.

Inventors

  • WU YOUHUI
  • QIN XIN

Assignees

  • 苏州市吴通智能电子有限公司

Dates

Publication Date
20260508
Application Date
20250519

Claims (7)

  1. 1. PCB board selection welds tool heat conduction structure, its characterized in that includes: the heat conducting rod is arranged at a notch of the jig substrate, and the notch corresponds to the PCB; the connecting block is integrally connected with the heat conducting rod in a butt joint mode and is positioned in the limiting groove on the side face of the notch.
  2. 2. The heat conducting structure of a PCB board selective soldering fixture according to claim 1, wherein the surface of the heat conducting rod is flush with the top surface of the fixture substrate.
  3. 3. The PCB board selective welding jig heat conduction structure according to claim 1, wherein a first assembly hole is formed in the connecting block, a second assembly hole is formed in the limiting groove, and the first assembly hole and the second assembly hole are fixed through a fastener.
  4. 4. A PCB board selective soldering jig heat conducting structure according to claim 3, wherein the fastener is a pin or a bolt.
  5. 5. The heat conducting structure of the PCB selective welding jig according to claim 3, wherein the limiting groove is of a strip-shaped structure.
  6. 6. The PCB board selective welding jig heat conduction structure according to claim 5, wherein the second assembly holes are distributed in a plurality of at intervals along the length direction of the limiting groove.
  7. 7. The heat conducting structure of the PCB board selective welding jig according to claim 1, wherein the jig substrate is provided with a rotary buckle at the outer side of the notch, and the rotary buckle is rotatably connected to the rotary shaft.

Description

PCB board selection welds tool heat conduction structure Technical Field The utility model relates to the technical field of welding jigs, in particular to a heat conduction structure of a PCB (printed circuit board) selective welding jig. Background The selective wave soldering is totally called selective wave soldering, is mainly applied to the field of PCB plug-in through hole soldering, and has the application range not limited to multi-layer PCB through hole soldering with high soldering requirements such as military electronics, spaceship electronics, automobile electronics, digital cameras, printers and the like and complex process. The selective wave soldering is divided into an off-line selective wave soldering and an on-line selective wave soldering, wherein the off-line selective wave soldering refers to off-line mode with a production line, a flux spraying machine and a selective soldering machine are arranged in a split mode, a preheating module follows a welding part, the automatic wave soldering has the characteristics of man-machine combination and small equipment occupation space, the on-line selective wave soldering can receive production line data in real time by an on-line system to complete full-automatic butt joint, and the flux spraying module, the preheating module and the welding module on the automatic wave soldering are of an integrated structure. The positioning jig for selective welding generally performs notch setting on the welding part of the PCB, so that when the PCB is preheated in the selective welding preheating area, the heat is difficult to be quickly transferred onto the positioning jig because the surface exposed area of the PCB is small, and the preheating time is long and the production efficiency is low. Disclosure of utility model The utility model aims to solve the problems that when the existing positioning jig for selective welding performs PCB preheating in a selective welding preheating zone, heat is difficult to be quickly transferred to the PCB due to small exposed area of the surface of the PCB, so that the preheating time is long and the production efficiency is low. In order to achieve the purpose, the utility model adopts the following technical scheme that the PCB board selective welding jig heat conduction structure comprises: the heat conducting rod is arranged at a notch of the jig substrate, and the notch corresponds to the PCB; the connecting block is integrally connected with the heat conducting rod in a butt joint mode and is positioned in the limiting groove on the side face of the notch. As a further description of the above technical solution: the surface of the heat conducting rod is flush with the top surface of the jig substrate. As a further description of the above technical solution: The connecting block is provided with a first assembly hole, the limiting groove is internally provided with a second assembly hole, and the first assembly hole and the second assembly hole are fixed through a fastener. As a further description of the above technical solution: The fastener is a pin or a bolt. As a further description of the above technical solution: The limit groove is of a strip-shaped structure. As a further description of the above technical solution: the second assembly holes are distributed in a plurality of at intervals along the length direction of the limiting groove. As a further description of the above technical solution: The jig substrate is provided with a rotary buckle at the outer side of the notch, and the rotary buckle is rotationally connected to the rotary shaft. In summary, due to the adoption of the technical scheme, compared with the prior art, the utility model has the following The beneficial effects are that: The bottom of the jig is hollowed out to form a notch corresponding to the PCB, the PCB is placed in the notch, the heat conducting rod is used for supporting, the rotary buckle is used for realizing pressing positioning, so that when the PCB is preheated in the selective welding preheating zone, heat can be fully conducted onto a product through the notch, the PCB moves out of the preheating zone until the heat absorbed by the heat conducting rod is absorbed in the selective welding operation, the PCB can be continuously heated, the heating and the residence time of the PCB in the preheating zone are reduced, and the production efficiency is further improved. In addition, the heat conduction rod adopts the detachable design on the jig to realize the stable support, the high-efficient abundant heat conduction to not unidimensional PCB board, and be convenient for change, clearance to the heat conduction rod. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model