Search

CN-122028333-A - High-reliability multi-layer circuit board stacking connection structure

CN122028333ACN 122028333 ACN122028333 ACN 122028333ACN-122028333-A

Abstract

The invention discloses a high-reliability multi-layer circuit board stacking connection structure applied to the field of circuit boards, which utilizes a fixed limiting unit and a movable limiting unit to fix the position of a circuit board to be processed, wherein the position of the circuit board to be processed is provided with a mounting hole by cutting, the position of the mounting hole is relatively fixed, a rectangular coordinate system is established by taking the position of one mounting hole as an origin, the coordinates of the mounting hole farthest from the rectangular coordinate system can be determined, the positions of two adjusting units are respectively adjusted, the movable unit is moved to the coordinate positions, the movable limiting unit is fixed by utilizing the adsorption effect of the movable unit, and then the multi-layer circuit board is sequentially mounted on the fixed limiting unit and the movable limiting unit, so that the fixation of the circuit board to be processed is finished, the subsequent hot press solidification operation is convenient, and the problems that the fixing operation is complicated and the adjusting precision is difficult to adapt to the high-precision processing requirement of the multi-layer circuit board in the prior art are solved.

Inventors

  • ZOU DAN
  • ZHANG PENGCHENG
  • WANG RUI

Assignees

  • 英迪迈智能驱动技术无锡股份有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (8)

  1. 1. A high-reliability multi-layer circuit board stacking connection structure comprises a lower layer structure (1) and an upper layer structure (2) which are fixedly connected with each other, and is characterized in that the lower layer structure (1) comprises an operation table (101), sliding holes (102) are formed in two adjacent side walls of the operation table (101), two sliding holes (102) are located on different horizontal planes, sliding grooves (107) matched with the sliding holes (102) in position are formed in the side walls opposite to the sliding holes (102), a movable unit (8) is placed in the operation table (101), two adjusting units (7) are inserted into the sliding holes (102), each adjusting unit (7) comprises a limiting rod (701), each limiting rod (701) penetrates through the movable unit (8) and extends into the corresponding sliding groove (107), one end, close to the sliding holes (102), of each limiting rod (701) is provided with a movable groove (702), an adjusting key (703) is inserted into one end, close to the movable groove (703), of each adjusting key (703) is provided with an electric groove (703), the electric groove (703) is connected with one end, close to the electric groove (703) of the magnetic ring (703), a compression spring (706) is fixedly connected between the magnetic ring (704) and the electromagnetic ring (705), the electromagnetic ring (705) repels the magnetic ring (704) when being electrified, a calibration unit (9) is fixedly connected to the outer wall of the limiting rod (701), a light transmission strip (104) is fixedly connected to the inner wall of the sliding hole (102), wear-resistant strips (105) are fixedly connected to the upper end and the lower end of each sliding hole (102), one end of each wear-resistant strip (105) close to the operating platform (101) is fixedly connected with a first light receiving unit (106) matched with the light transmission strip (104), and each first light receiving unit (106) consists of a plurality of independent photosensitive elements which are linearly arranged; The movable unit (8) comprises a movable block (801), an electromagnet block (802) is embedded and mounted at the upper end of the movable block (801), a fixed limiting unit (4) is fixedly connected to the upper end of the operating table (101), a movable limiting unit (5) is placed on the operating table (101), the movable limiting unit (5) comprises a movable base (501), a magnetic block (502) is fixedly connected to the lower end of the movable base (501), the electromagnet block (802) is adsorbed with the magnetic block (502) when being electrified, and a positioning tube (503) is fixedly connected to the upper end of the magnetic block (502); The two pairs of wear-resistant strips (105) are respectively carved with scale marks at one end far away from the operating platform (101), and the scale marks 0 on the two pairs of wear-resistant strips (105) are matched with the axis position of the fixed limiting unit (4).
  2. 2. The high-reliability multi-layer circuit board stacking connection structure according to claim 1, wherein the operation table (101) is integrally made of a non-transparent material, and a counterweight cover (103) is fixedly connected to the lower end of the operation table (101).
  3. 3. The high-reliability multi-layer circuit board stacking connection structure according to claim 1, wherein the calibration unit (9) comprises a mounting ring (901), a mounting groove (902) is formed in one end, close to the sliding hole (102), of the mounting ring (901), a first light-emitting unit (903) is fixedly connected in the mounting groove (902), and the two mounting grooves (902) are located on the same vertical plane.
  4. 4. The high-reliability stacked connection structure of multi-layer circuit boards of claim 3, wherein said first light emitting unit (903) has a horn shape, and the diameter of the light outlet is smaller than the diameter of the light inlet, and the inner wall of said first light emitting unit (903) is a diffuse reflection surface.
  5. 5. The high-reliability multi-layer circuit board stacking connection structure according to claim 1, wherein a pair of push switches (707) are fixedly connected to the side walls of the adjusting key (703), and the two push switches (707) are located at the left end and the right end of the adjusting key (703).
  6. 6. The high-reliability multi-layer circuit board stacking connection structure according to claim 1, wherein the fixing limiting unit (4) comprises a fixing base (401), an electric heating unit is embedded in the fixing base (401), a heating pipe (402) and a heating rod (404) are fixedly connected to the upper end of the fixing base (401), the heating rod (404) is located in the heating pipe (402), the heating rod (404) is fixedly connected with the electric heating unit, a temperature sensor (406) is fixedly connected to an opening at the upper end of the heating pipe (402), a storage bag (405) is inserted in the heating pipe (402), and phase change materials are filled in the storage bag (405).
  7. 7. The high reliability stacked connection structure of multi-layer circuit board according to claim 6, wherein the lower end of the heat insulating upper cover (403) is fixedly connected with a temperature sensor (406), and the temperature sensor (406) is in contact with the storage bag (405).
  8. 8. The high-reliability multi-layer circuit board stacking connection structure according to claim 6, wherein an installation base (408) is fixedly connected to the lower inner wall of the storage bag (405), a plurality of second light-emitting units (409) are fixedly connected to the upper end of the installation base (408), and second light-sensing units (407) are fixedly connected to the upper inner wall of the storage bag (405).

Description

High-reliability multi-layer circuit board stacking connection structure Technical Field The invention relates to the field of circuit boards, in particular to a high-reliability multi-layer circuit board stacking connection structure. Background The multilayer circuit board is a printed circuit board formed by alternately laminating and interconnecting three or more conductive pattern layers and insulating materials, is a product of the development of electronic information technology to high speed and multiple functions, realizes circuit overlapping by adopting a lamination process, and realizes interlayer conduction by adopting a drilling and via technology. Applications thereof cover communication equipment, 5G base stations, medical devices, and portable electronics, and continue to evolve toward high density interconnects, environmental materials, and flexible circuits. In the invention patent with the publication number of CN114650671B, a printed circuit board production line is disclosed, a stacking device is used for sequentially stacking inner core boards output by a punching device, and a pressing device is used for pressing the inner core boards stacked by the stacking device together, so that the inner core boards are not required to be ordered manually, and the technical problem of the production efficiency of the printed circuit board in the related art is effectively solved. In the invention patent with publication number CN110290652B, a high-precision positioning lamination device and method for LCP multilayer circuit board are disclosed, and the problem of positioning precision of LCP multilayer circuit board caused by different machining tolerances of a pressing table tool and LCP positioning hole is solved by laser machining an LCP substrate and a positioning mother board, so that high-precision positioning lamination interconnection of LCP multilayer circuit board is realized. In the prior art, although the multilayer circuit board can be fixed through a pin and other structures, the adjusting precision of the multilayer circuit board is difficult to adapt to the high-precision processing requirement of the multilayer circuit board, and the processing requirement of the multilayer circuit board is difficult to be met. Disclosure of Invention The invention solves the technical problems that the fixing structure in the prior art is troublesome to adjust, the positioning precision is low, and the circuit board is possibly damaged due to uneven heating in the hot pressing process. In order to solve the problems, the invention adopts the following technical scheme. A high-reliability multi-layer circuit board stacking connection structure utilizes a fixed limit unit and a movable limit unit to fix the position of a circuit board to be processed, wherein a mounting hole is cut on the circuit board to be processed, the position of the mounting hole is used as an original point, a rectangular coordinate system is established, the coordinates of the mounting hole which is farthest from the mounting hole can be determined, then the positions of two adjusting units can be respectively adjusted, the two adjusting units respectively move to the corresponding coordinate positions, at the moment, the movable unit moves to the coordinate positions, the movable limit unit is fixed by utilizing the adsorption effect of the movable unit and the movable limit unit, then the multi-layer circuit board is sequentially installed on the fixed limit unit and the movable limit unit, and prepreg is coated between two adjacent layers of circuit boards, so that the positioning and fixing of the circuit board to be processed are completed, and subsequent hot-pressing solidification operation is convenient. Furthermore, the whole operation panel that adopts non-transparent material to make, the lower extreme fixedly connected with counter weight lid of operation panel reduces the influence of external illumination to the calibration unit work. Further, the calibration unit includes the collar, and the mounting groove has been seted up to the one end that the collar is close to the slide opening, and mounting groove internal fixation has the first luminescence unit, and two mounting grooves are located same vertical plane, adopts the luminescence unit that is located same vertical plane to mark the position of regulation unit and calibration unit, can reduce the first damage of single luminescence unit and cause the risk of the whole inefficacy of calibration unit. Further, the first light-emitting unit is in a horn shape, the diameter of the light outlet is smaller than that of the light inlet, the inner wall of the first light-emitting unit is a diffuse reflection surface, the angle of light emitted by the first light-emitting unit is reduced, the light spot of the light emitted by the first light-emitting unit on the first light-receiving unit is smaller, and the positioning effect of the adjusting unit is improved.