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CN-120269148-B - Automatic welding device for FPC flexible board and loudspeaker

CN120269148BCN 120269148 BCN120269148 BCN 120269148BCN-120269148-B

Abstract

The invention discloses an automatic welding device for an FPC (flexible printed circuit) and a loudspeaker, which particularly relates to the technical field of automatic welding, and comprises a welding platform, a controller, a laser welding head and a dynamic adjustment heat insulation mechanism; the dynamic adjusting heat insulation mechanism comprises an adjusting motor, a rotating block, an adjusting sliding frame, an adjusting sliding shaft, a pressing block, a small heat insulation zone frame, a medium heat insulation zone frame and a large heat insulation zone frame. The invention adopts the dynamic adjustment heat insulation mechanism, has the advantages that the heat insulation areas of the flexible FPC board and the loudspeaker which are welded automatically can be dynamically adjusted according to the needs, thereby solving the problems that the heat insulation areas of the flexible FPC board and the loudspeaker which are welded automatically are difficult to be adjusted dynamically according to the needs due to the structural differences of the flexible FPC board and the loudspeaker which are different in types and the differences in welding spot layout, material thickness and heat capacity parameters.

Inventors

  • GONG ZHENGDONG
  • WANG WENBANG
  • LIU ZHONGMING

Assignees

  • 常州华龙电子有限公司

Dates

Publication Date
20260505
Application Date
20250430

Claims (7)

  1. The automatic welding device for the FPC flexible board and the loudspeaker comprises a welding platform (1) and a controller (32) and is characterized in that a laser welding head (2) is arranged above the welding platform (1), and a dynamic adjusting heat insulation mechanism is arranged on one side of the laser welding head (2); The dynamic adjusting heat insulation mechanism comprises an adjusting motor (3) arranged at one side of a laser welding head (2), a rotating block (4) is coaxially and fixedly connected to the output end of the adjusting motor (3), an adjusting sliding frame (5) is fixedly connected to one end part of the rotating block (4), an adjusting sliding shaft (6) is slidingly connected to the inner wall of the adjusting sliding frame (5) and positioned at one side of the rotating block (4), and a pressing block (7) is fixedly arranged at one end part of the adjusting sliding shaft (6); A small heat insulation zone frame (8) is fixedly arranged on one side of the pressing block (7), a medium heat insulation zone frame (9) is arranged outside the small heat insulation zone frame (8), a large heat insulation zone frame (10) is arranged outside the medium heat insulation zone frame (9), a supporting column (11) is fixedly connected to the top end of the adjusting motor (3), a reinforcing column (12) is arranged on one side of the supporting column (11), and the bottom end of the reinforcing column (12) is fixedly connected with the medium heat insulation zone frame (9); The top end of the reinforcing column (12) is fixedly provided with a support ring (13), the laser welding head (2) and the supporting column (11) are fixedly connected with the support ring (13), the laser welding head (2) is electrically connected with the controller (32), two sides of the adjusting sliding frame (5) are respectively and slidably connected with a sliding ring (14), the two sliding rings (14) are fixedly connected with the adjusting sliding shaft (6), the sliding rings (14) are slidably connected with the pressing block (7), the inner wall of the adjusting sliding frame (5) is slidably connected with an adjusting rod (15) at a position close to the large heat insulation zone frame (10), the outer wall of the adjusting rod (15) is fixedly connected with two sliding support rings (16), one end part of the adjusting rod (15) is fixedly provided with an L-shaped connecting block (17), and a gap is reserved between the L-shaped connecting block (17) and one sliding support ring (16); The novel heat insulation structure is characterized in that the L-shaped connecting block (17) is fixedly connected with the large heat insulation zone frame (10), a concave sliding bar (18) is fixedly connected to one side of the inner wall of the large heat insulation zone frame (10), a concave guide bar (19) is fixedly installed on one side of the outer wall of the small heat insulation zone frame (8), and the concave guide bar (19) and the concave sliding bar (18) are both in sliding connection with the medium heat insulation zone frame (9).
  2. 2. The automatic welding device for the FPC flexible board and the loudspeaker according to claim 1, wherein the outer wall of the adjusting sliding shaft (6) and the inner wall of the adjusting sliding frame (5) are smooth surfaces, the vertical section of the adjusting sliding shaft (6) is circular, and the controller (32) is electrically connected with the adjusting motor (3).
  3. 3. The automatic welding device for FPC flexible board and horn according to claim 1, characterized in that the small-sized heat-insulating frame (8) and the medium-sized heat-insulating frame (9) and the large-sized heat-insulating frame (10) are made of aluminum nitride ceramic material, the inner wall diameter of the medium-sized heat-insulating frame (9) is larger than the inner wall diameter of the small-sized heat-insulating frame (8), and the inner wall diameter of the large-sized heat-insulating frame (10) is larger than the inner wall diameter of the medium-sized heat-insulating frame (9); The lower surface of the large heat-insulating zone frame (10) is in the same horizontal plane with the lower surface of the small heat-insulating zone frame (8), the lower surface of the medium heat-insulating zone frame (9) is lower than the lower surface of the small heat-insulating zone frame (8), and the lower surface of the medium heat-insulating zone frame (9) is lower than the lower surface of the large heat-insulating zone frame (10).
  4. 4. The automatic welding device for the FPC flexible board and the loudspeaker according to claim 1, wherein the vertical section of the L-shaped connecting block (17) is L-shaped, the two sliding support rings (16) are symmetrically arranged about the adjusting rod (15), and the outer wall of the adjusting rod (15) and the inner wall of the adjusting sliding frame (5) are smooth surfaces.
  5. 5. The automatic welding device for the FPC flexible board and the loudspeaker according to claim 1, wherein a pressing strip (20) is arranged on one side of the concave sliding strip (18), the pressing strip (20) is fixedly connected with the large heat insulation zone frame (10), a positioning pressing strip (21) is arranged on one side of the concave guide strip (19), and the positioning pressing strip (21) is fixedly connected with the small heat insulation zone frame (8); One side of the concave guide strip (19) is provided with a sensing block (22), the bottom end of the sensing block (22) is fixedly provided with a pressure sensor (23), the pressure sensor (23) is fixedly connected with the medium-sized heat insulation zone frame (9), and the pressure sensor (23) is used for sensing the pressure of the sensing block (22).
  6. 6. The automatic welding device for the FPC and the loudspeaker, as set forth in claim 5, characterized in that the vertical cross-sectional shapes of the concave guide bar (19) and the concave slide bar (18) are concave, and a gap is arranged between the pressing bar (20) and the positioning pressing bar (21).
  7. 7. The automatic welding device for the FPC flexible board and the loudspeaker, which is disclosed in claim 1, is characterized in that a positioning slide plate (24) is fixedly arranged at the top end of the laser welding head (2), and a bottom plate (25) is inserted at the bottom end of the welding platform (1); The upper surface of the positioning slide plate (24) is provided with an electric cylinder (26), one side of the electric cylinder (26) is fixedly connected with a sliding guide plate (27), the sliding guide plate (27) is in sliding connection with the positioning slide plate (24), one side of the sliding guide plate (27) is fixedly provided with a sleeving slide block (28), the inner wall of the sleeving slide block (28) is in threaded connection with a transmission screw (29), the outer wall of the sleeving slide block (28) is provided with a supporting groove frame (31) in a sliding manner, and the supporting groove frame (31) is fixedly connected with the bottom plate (25); The electric motor (30) is fixedly arranged on one side of the inner wall of the supporting groove frame (31), the driving motor (30) is used for driving the driving screw (29) to rotate, the controller (32) is fixed on one side of the supporting groove frame (31), and the electric cylinder (26) and the driving motor (30) are electrically connected with the controller (32).

Description

Automatic welding device for FPC flexible board and loudspeaker Technical Field The invention relates to the technical field of automatic welding, in particular to an automatic welding device for an FPC (flexible printed circuit) flexible board and a loudspeaker. Background The automatic welding device for the FPC flexible board and the loudspeaker is mainly used in the field of manufacturing of the FPC flexible board and the loudspeaker, the core application of the automatic welding device can be generalized to improve the production efficiency, the automatic welding is replaced by manual welding, the continuous welding of the FPC flexible board and the loudspeaker is realized, the production period is greatly shortened, and the high-productivity requirement is met. Through retrieving in current publication, chinese patent publication No. CN114131195A discloses a laser welding device for electronic components, and this welding device can be automatically fix the circuit board centre gripping through the clamp splice, and can also automatically regulated electronic components's position, in the pin hole of being convenient for the stitch is inserted, the convenience is welded to and can be automatically with the electronic components after the welding is accomplished pull down and collect, saved manual operation's step, saved time, improved welding efficiency. However, this device has the following problems. In the automatic welding process of the FPC flexible board and the loudspeaker assembly, the high-temperature operation of a welding laser head) can trigger metal melt sputtering, the high-temperature sputtering has random diffusion characteristics, and spreads to the FPC circuit or the loudspeaker vibrating diaphragm and voice coil sensitive area, so that the problems of carbonization of an insulating layer, circuit short circuit or deformation of an acoustic assembly are caused, and the difference of the structure of the FPC and the loudspeaker in different models is that the welding spot layout, the material thickness and the heat capacity parameters are different, so that the required heat insulation control area cannot be unified, and the heat insulation area of the FPC flexible board and the loudspeaker automatic welding is difficult to dynamically adjust according to the requirement. Disclosure of Invention In order to overcome the defects of the prior art, the automatic welding device for the FPC flexible board and the loudspeaker comprises a welding platform and a controller, wherein a laser welding head is arranged above the welding platform, a dynamic adjusting heat insulation mechanism is arranged on one side of the laser welding head, the dynamic adjusting heat insulation mechanism comprises an adjusting motor arranged on one side of the laser welding head, the output end of the adjusting motor is coaxially and fixedly connected with a rotating block, one end part of the rotating block is fixedly connected with an adjusting sliding frame, the inner wall of the adjusting sliding frame is slidably connected with an adjusting sliding shaft at the position of one side of the rotating block, one end part of the adjusting sliding shaft is fixedly provided with a pressing block, one side of the pressing block is fixedly provided with a small heat insulation zone frame, the outside of the small heat insulation zone frame is provided with a medium heat insulation zone frame, and the outside of the medium heat insulation zone frame is provided with a large heat insulation zone frame. Preferably, the outer wall of the adjusting sliding shaft and the inner wall of the adjusting sliding frame are smooth surfaces, the vertical section of the adjusting sliding shaft is circular, and the controller is electrically connected with the adjusting motor. The small-sized heat-insulating zone frame, the medium-sized heat-insulating zone frame and the large-sized heat-insulating zone frame are made of aluminum nitride ceramic materials, the diameter of the inner wall of the medium-sized heat-insulating zone frame is larger than that of the small-sized heat-insulating zone frame, the diameter of the inner wall of the large-sized heat-insulating zone frame is larger than that of the inner wall of the medium-sized heat-insulating zone frame, the lower surface of the large-sized heat-insulating zone frame and the lower surface of the small-sized heat-insulating zone frame are in the same horizontal plane, the lower surface of the medium-sized heat-insulating zone frame is lower than that of the small-sized heat-insulating zone frame, and the lower surface of the medium-sized heat-insulating zone frame is lower than that of the large-sized heat-insulating zone frame. The top end of the reinforcing column is fixedly provided with a supporting ring, the laser welding head and the supporting column are fixedly connected with the supporting ring, and the laser welding head is electrically connected with the controller. The