Automatic welding device for FPC (Flexible Printed Circuit) and loudspeaker

Abstract

The invention discloses an FPC flexible board and horn automatic welding device, and particularly relates to the technical field of automatic welding, comprising a welding platform, a controller, a laser welding head and a dynamic adjustment heat insulation mechanism; the dynamic adjustment heat insulation mechanism comprises an adjustment motor, a rotating block, an adjustment sliding frame, an adjustment sliding shaft, a pressing block, a small heat insulation area frame, a middle heat insulation area frame and a large heat insulation area frame. According to the invention, a dynamic adjustment heat insulation mechanism is adopted, and the automatic welding heat insulation device has the advantage of dynamically adjusting a heat insulation area for automatic welding of FPC flexible boards and horns of different models according to requirements, so that the problem that the structure difference exists between the FPC flexible boards and the horns of different models, and the difference is welding spot layout, material thickness and heat capacity parameters is solved; the required heat insulation control area cannot be unified, and the heat insulation area for automatic welding of the FPC flexible board and the horn is difficult to dynamically adjust according to needs.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic welding, and more specifically, to an automatic welding device for FPC flexible boards and speakers. Background Art

[0002] The automatic welding device for FPC flexible boards and speakers is mainly used in the manufacturing field of FPC flexible boards and speakers. Its core uses can be summarized as improving production efficiency. Through automated welding, manual welding is replaced to achieve continuous welding of FPC flexible boards and speakers, significantly shortening the production cycle and meeting high production capacity requirements.

[0003] After retrieval in existing public literatures, the patent with the Chinese patent publication number CN114131195A discloses a laser welding device for electronic components. This welding device can automatically clamp and fix the circuit board through a clamping block, and can also automatically adjust the position of the electronic components, facilitating the insertion of pins into pin holes for convenient welding, and can automatically remove and collect the electronic components after welding is completed, eliminating the steps of manual operation, saving time, and improving the welding efficiency. However, this device still has the following problems.

[0004] During the automatic welding process of the FPC flexible board and the speaker assembly, the high-temperature operation of the welding laser head will cause the sputtering of molten metal. Such high-temperature sputtering has the characteristic of random diffusion, spreading to sensitive areas of the FPC circuit, speaker diaphragm, or voice coil, resulting in problems such as carbonization of the insulating layer, short circuit of the circuit, or deformation of the acoustic components. Due to the structural differences between different models of FPCs and speakers, the differences lie in the solder joint layout, material thickness, and heat capacity parameters, and the heat insulation control areas required by them cannot be unified, making it difficult to dynamically adjust the heat insulation area for the automatic welding of FPC flexible boards and speakers as needed. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solution: An automatic welding device for FPC flexible boards and speakers, including a welding platform and a controller. Above the welding platform is provided a laser welding head, and on one side of the laser welding head is provided a dynamically adjustable heat insulation mechanism; the dynamically adjustable heat insulation mechanism includes an adjustment motor arranged on one side of the laser welding head, and the output end of the adjustment motor is coaxially and fixedly connected with a rotating block. One end of the rotating block is fixedly connected with an adjustment sliding frame. Inside the adjustment sliding frame and at a position on one side of the rotating block is slidably connected an adjustment sliding shaft. One end of the adjustment sliding shaft is fixedly installed with a pressing block; on one side of the pressing block is fixedly installed a small heat insulation area frame, outside the small heat insulation area frame is provided a medium heat insulation area frame, and outside the medium heat insulation area frame is provided a large heat insulation area frame.

[0006] Preferably, the outer wall of the adjustment sliding shaft and the inner wall of the adjustment sliding frame are both smooth surfaces, and the vertical cross-sectional shape of the adjustment sliding shaft is circular. The controller is electrically connected to the adjustment motor. The small heat insulation area frame, the medium heat insulation area frame, and the large heat insulation area frame are all made of aluminum nitride ceramic material. The inner wall diameter of the medium heat insulation area frame is larger than that of the small heat insulation area frame, and the inner wall diameter of the large heat insulation area frame is larger than that of the medium heat insulation area frame; the lower surface of the large heat insulation area frame is at the same horizontal plane as the lower surface of the small heat insulation area frame, the lower surface of the medium heat insulation area frame is higher than the lower surface of the small heat insulation area frame, and the lower surface of the medium heat insulation area frame is higher than the lower surface of the large heat insulation area frame. The top of the adjustment motor is fixedly connected with a support column, and a reinforcing column is arranged on one side of the support column. The bottom end of the reinforcing column is fixedly connected to the medium heat insulation area frame; a support ring is fixedly installed at the top end of the reinforcing column. Both the laser welding head and the support column are fixedly connected to the support ring, and the laser welding head is electrically connected to the controller. Both sides of the adjustment sliding frame are slidably connected with sliding rings, and both of the sliding rings are fixedly connected to the adjustment sliding shaft. The sliding ring is slidably connected with the pressing block.

[0007] When this technology is in use, when the required one is the medium heat insulation area frame, that is, the first type of FPC flexible board and the speaker, the adjustment motor remains stationary. When the required one is the small heat insulation area frame, that is, the second type of FPC flexible board and the speaker, the adjustment motor drives the rotating block to rotate clockwise, and the adjustment sliding frame makes the adjustment sliding shaft move downward. The adjustment rod drives the L-shaped connecting block to move the large heat insulation area frame upward. The adjustment sliding shaft drives the two sliding rings to slide along the adjustment sliding frame. The adjustment sliding shaft will drive the pressing block to move downward. The small heat insulation area frame drives and slides downward along the outer wall of the laser welding head. The pressing block drives the small heat insulation area frame to move downward synchronously with the laser welding head. In this way, the small heat insulation area frame covers the small heat insulation area at the welding point of the laser welding head.

[0008] Preferably, an adjustment rod is slidably connected to the inner wall of the adjustment sliding frame and close to the position of the large heat insulation area frame. Two sliding support rings are fixedly connected to the outer wall of the adjustment rod. An L-shaped connecting block is fixedly installed at one end of the adjustment rod. There is a gap between the L-shaped connecting block and one of the sliding support rings; the L-shaped connecting block is fixedly connected to the large heat insulation area frame.

[0009] The vertical cross-sectional shape of the L-shaped connecting block is L-shaped. The two sliding support rings are symmetrically arranged with respect to the adjustment rod. The outer wall of the adjustment rod and the inner wall of the adjustment sliding frame are both smooth surfaces.

[0010] When this technology is in use, when a large heat insulation area frame is required, that is, the third type of FPC flexible board and the speaker, the adjustment motor is started through the controller. The rotating block drives the adjustment sliding frame to rotate counterclockwise. The adjustment rod and the sliding support ring slide along the outer wall of the adjustment sliding frame. At the same time, the adjustment rod drives the L-shaped connecting block to move downward, and at the same time, the large heat insulation area frame moves downward. The large heat insulation area frame covers the position of the large heat insulation area.

[0011] In this way, the lower surface of the large heat insulation area frame can be lower than the lower surface position of the medium heat insulation area frame.

[0012] Preferably, one side of the inner wall of the large heat insulation area frame is fixedly connected with a concave sliding strip, and one side of the outer wall of the small heat insulation area frame is fixedly installed with a concave guiding strip. The concave guiding strip and the concave sliding strip are both slidably connected with the medium heat insulation area frame; one side of the concave sliding strip is provided with a pressing strip, and the pressing strip is fixedly connected with the large heat insulation area frame. One side of the concave guiding strip is provided with a positioning pressing strip, and the positioning pressing strip is fixedly connected with the small heat insulation area frame; One side of the concave guiding strip is provided with a sensing block, the bottom end of the sensing block is fixedly installed with a pressure sensor, and the pressure sensor is fixedly connected with the medium heat insulation area frame. The pressure sensor is used to sense the pressure of the sensing block. The vertical cross-sectional shapes of the concave guiding strip and the concave sliding strip are both concave, and there is a gap between the pressing strip and the positioning pressing strip.

[0013] When this technology is in use, the small heat insulation area frame drives the concave guiding strip to move downward. At the same time, the small heat insulation area frame drives the positioning pressing strip to move downward. After the sensing block is stressed, it is pressed on the pressure sensor, and the pressure sensor senses the pressure value. Then, the adjustment motor is turned off through the controller. Or the large heat insulation area frame drives the pressing strip to move downward, the sensing block is pressed and sensed on the pressure sensor, and after the pressure sensor senses the pressure, the adjustment motor is turned off through the controller.

[0014] Preferably, the top end of the laser welding head is fixedly installed with a positioning sliding plate, and the bottom end of the welding platform is inserted with a bottom plate; an electric cylinder is installed on the upper surface of the positioning sliding plate, and one side of the electric cylinder is fixedly connected with a sliding guide plate. The sliding guide plate is slidably connected with the positioning sliding plate. One side of the sliding guide plate is fixedly installed with a socket slider. A transmission screw is threadedly connected to the inner wall of the socket slider. The outer wall of the socket slider is slidably installed with a support groove frame, and the support groove frame is fixedly connected with the bottom plate; a transmission motor is fixedly installed on one side of the inner wall of the support groove frame, and the transmission motor is used to drive the transmission screw to rotate. The controller is fixed on one side of the support groove frame, and the electric cylinder and the transmission motor are both electrically connected to the controller.

[0015] The technical effects and advantages of the present invention: 1. The present invention adopts a dynamically adjustable heat insulation mechanism. When a medium-sized heat insulation area frame is required, that is, the first type of FPC flexible board and speaker, the adjustment motor remains stationary, and the high-temperature sputtering material will pass through the medium-sized heat insulation area frame to perform dynamic heat insulation in the medium-sized heat insulation area. When a small-sized heat insulation area frame is required, that is, the second type of FPC flexible board and speaker, the adjustment motor drives the rotating block to rotate clockwise, the adjustment sliding frame makes the adjustment sliding shaft move downward, the adjustment sliding shaft drives the pressing block to move downward, the pressing block drives the small-sized heat insulation area frame to move downward, and the lower surface of the small-sized heat insulation area frame can be lower than the lower surface of the medium-sized heat insulation area frame. The small-sized heat insulation area frame is used to perform small-area heat insulation on the high-temperature sputtering material, avoiding the spread of high temperature to other areas. It can dynamically adjust and unify different types of FPC flexible boards and speakers according to the required heat insulation control area, and can dynamically adjust the heat insulation area for the automatic welding of FPC flexible boards and speakers as needed.

[0016] 2. When a large-sized heat insulation area frame is required, that is, the third type of FPC flexible board and speaker, the adjustment motor drives the rotating block to rotate counterclockwise, the adjustment sliding frame drives the adjustment rod to move downward, the adjustment rod and the sliding support ring slide along the outer wall of the adjustment sliding frame, and the L-shaped connecting block makes the large-sized heat insulation area frame move downward. At the same time, the large-sized heat insulation area frame moves downward, and the large-sized heat insulation area frame covers the position of the large-sized heat insulation area, realizing high-temperature sputtering isolation in the large-sized area, and can dynamically adjust the heat insulation area for the automatic welding of FPC flexible boards and speakers as needed.

[0017] 3. When a small-sized heat insulation area frame is required, the small-sized heat insulation area frame drives the concave guiding strip to move downward, the small-sized heat insulation area frame drives the positioning pressing strip to move downward, the positioning pressing strip presses downward on the sensing block, and the pressure sensor senses the pressure value, then the adjustment motor is turned off through the controller. When a large-sized heat insulation area frame is required, the large-sized heat insulation area frame drives the concave sliding strip to move downward, the large-sized heat insulation area frame drives the pressing strip to move downward, and the sensing block presses on the pressure sensor, then the adjustment motor is turned off through the controller. In this way, the dynamic adjustment of the small-sized heat insulation area frame and the large-sized heat insulation area frame can be made precise through one pressure sensor, so that only one pressure sensor is needed to realize the dynamic adjustment of different models, greatly saving the sensing cost of dynamic adjustment.

[0018] The mutual influence of the above multiple functions. When a medium-sized heat insulation area frame is required, that is, the first type of FPC flexible board and the speaker, the adjustment motor remains stationary. At the same time, when a small-sized heat insulation area frame is selected, the lower surface of the small-sized heat insulation area frame can be dynamically adjusted to be lower than the lower surface of the medium-sized heat insulation area frame. And when a large-sized heat insulation area frame is selected, the L-shaped connecting block causes the large-sized heat insulation area frame to move downward, and the lower surface of the large-sized heat insulation area frame is lower than the lower surface of the medium-sized heat insulation area frame. In summary, for different types of FPC flexible boards and speakers, dynamic adjustment and unification can be carried out according to the required heat insulation control area, and the heat insulation area for automatic welding of the FPC flexible board and the speaker can be dynamically adjusted as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of the automatic welding device for the FPC flexible board and the speaker of the present invention.

[0020] Figure 2 is a partial structural schematic diagram of the cut-off cross-section at the connection between the support ring and the positioning slide plate of the present invention.

[0021] Figure 3 is a partial structural schematic diagram of the cut-off vertical cross-section at the connection between the medium-sized heat insulation area frame and the reinforcement column of the present invention.

[0022] Figure 4 is a partial front view structural schematic diagram of the connection between the adjustment slide shaft and the pressing block of the present invention.

[0023] Figure 5 is a partial structural schematic diagram of the cut-off at the connection between the L-shaped connecting block and the large-sized heat insulation area frame of the present invention.

[0024] Figure 6 is a partial front view structural schematic diagram of the connection between the medium-sized heat insulation area frame and the reinforcement column of the present invention.

[0025] Figure 7 is of the present invention Figure 3 enlarged structural schematic diagram at A.

[0026] Figure 8 is a partial front view structural schematic diagram of the connection between the support groove frame and the drive motor of the present invention.

[0027] Figure 9 is a top view structural schematic diagram of the automatic welding device for the FPC flexible board and the speaker of the present invention.

[0028] The reference numerals are: 1, welding platform; 2, laser welding head; 3, adjustment motor; 4, rotating block; 5, adjustment sliding frame; 6, adjustment sliding shaft; 7, pressing block; 8, small heat insulation area frame; 9, medium heat insulation area frame; 10, large heat insulation area frame; 11, support column; 12, reinforcement column; 13, support ring; 14, sliding ring; 15, adjustment rod; 16, sliding support ring; 17, L-shaped connecting block; 18, concave sliding bar; 19, concave guiding bar; 20, pressing bar; 21, positioning pressing bar; 22, sensing block; 23, pressure sensor; 24, positioning sliding plate; 25, bottom plate; 26, electric cylinder; 27, sliding guide plate; 28, socket slider; 29, transmission screw; 30, transmission motor; 31, support groove frame; 32, controller. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figure 1-9 shown, an automatic welding device for FPC flexible board and speaker is provided with a dynamic adjustment heat insulation mechanism. The setting of the dynamic adjustment heat insulation mechanism can dynamically adjust and unify different models of FPC flexible boards and speakers according to the required heat insulation control area, and can dynamically adjust the heat insulation area of the automatic welding of the FPC flexible board and the speaker as needed. The specific structure of the dynamic adjustment heat insulation mechanism is set as follows.

[0031] In this embodiment, as Figure 1 - Figure 4 shown, a laser welding head 2 is provided above the welding platform 1, and a dynamic adjustment heat insulation mechanism is provided on one side of the laser welding head 2; the dynamic adjustment heat insulation mechanism includes an adjustment motor 3 provided on one side of the laser welding head 2, and a rotating block 4 is coaxially and fixedly connected to the output end of the adjustment motor 3. One end of the rotating block 4 is fixedly connected to an adjustment sliding frame 5. An adjustment sliding shaft 6 is slidably connected to the inner wall of the adjustment sliding frame 5 and at a position on one side of the rotating block 4. One end of the adjustment sliding shaft 6 is fixedly installed with a pressing block 7.

[0032] On one side of the briquetting block 7, a small heat insulation area frame 8 is fixedly installed. Outside the small heat insulation area frame 8, a medium heat insulation area frame 9 is provided, and outside the medium heat insulation area frame 9, a large heat insulation area frame 10 is provided. The outer wall of the adjustment slide shaft 6 and the inner wall of the adjustment slide frame 5 are both smooth surfaces, and the vertical cross-sectional shape of the adjustment slide shaft 6 is circular. The controller 32 is electrically connected to the adjustment motor 3. The small heat insulation area frame 8, the medium heat insulation area frame 9, and the large heat insulation area frame 10 are all made of aluminum nitride ceramic material. The inner wall diameter of the medium heat insulation area frame 9 is larger than the inner wall diameter of the small heat insulation area frame 8, and the inner wall diameter of the large heat insulation area frame 10 is larger than the inner wall diameter of the medium heat insulation area frame 9; the lower surface of the large heat insulation area frame 10 is on the same horizontal plane as the lower surface of the small heat insulation area frame 8, the lower surface of the medium heat insulation area frame 9 is higher than the lower surface of the small heat insulation area frame 8, and the lower surface of the medium heat insulation area frame 9 is higher than the lower surface of the large heat insulation area frame 10.

[0033] In this embodiment, as Figure 3 - Figure 6 shown, at the top of the adjustment motor 3, a support column 11 is fixedly connected. On one side of the support column 11, a reinforcement column 12 is provided, and the bottom end of the reinforcement column 12 is fixedly connected to the medium heat insulation area frame 9; at the top end of the reinforcement column 12, a support ring 13 is fixedly installed. Both the laser welding head 2 and the support column 11 are fixedly connected to the support ring 13, and the laser welding head 2 is electrically connected to the controller 32, so as to facilitate the positioning slide plate 24 to drive the laser welding head 2 to move downward, and the laser welding head 2 drives the support ring 13 to move downward, the support ring 13 drives the reinforcement column 12 to move downward, and the reinforcement column 12 drives the medium heat insulation area frame 9 to move downward, facilitating linkage movement. On both sides of the adjustment slide frame 5, sliding rings 14 are slidably connected, and both sliding rings 14 are fixedly connected to the adjustment slide shaft 6. The sliding rings 14 are slidably connected to the briquetting block 7, so as to facilitate the adjustment slide shaft 6 to drive the two sliding rings 14 to slide along the adjustment slide frame 5, ensuring that the adjustment slide shaft 6 can stably perform the sliding operation.

[0034] In this embodiment, as Figure 5 shown, at a position close to the large heat insulation area frame 10 on the inner wall of the adjustment slide frame 5, an adjustment rod 15 is slidably connected. On the outer wall of the adjustment rod 15, two sliding support rings 16 are fixedly connected. At one end of the adjustment rod 15, an L-shaped connection block 17 is fixedly installed. There is a gap between the L-shaped connection block 17 and one of the sliding support rings 16; the L-shaped connection block 17 is fixedly connected to the large heat insulation area frame 10. The vertical cross-sectional shape of the L-shaped connection block 17 is L-shaped, the two sliding support rings 16 are symmetrically arranged with respect to the adjustment rod 15, and the outer wall of the adjustment rod 15 and the inner wall of the adjustment slide frame 5 are both smooth surfaces.

[0035] In this embodiment, as Figure 7As shown, on one side of the inner wall of the large heat insulation area frame 10, a concave slide bar 18 is fixedly connected. On one side of the outer wall of the small heat insulation area frame 8, a concave guide bar 19 is fixedly installed. Both the concave guide bar 19 and the concave slide bar 18 are slidably connected to the medium heat insulation area frame 9. On one side of the concave slide bar 18, there is a pressing bar 20, and the pressing bar 20 is fixedly connected to the large heat insulation area frame 10. On one side of the concave guide bar 19, there is a positioning pressing bar 21, and the positioning pressing bar 21 is fixedly connected to the small heat insulation area frame 8.

[0036] On one side of the concave guide bar 19, there is a sensing block 22. At the bottom end of the sensing block 22, a pressure sensor 23 is fixedly installed. The pressure sensor 23 is fixedly connected to the medium heat insulation area frame 9, and the pressure sensor 23 is used to sense the pressure of the sensing block 22. The vertical cross-sectional shapes of both the concave guide bar 19 and the concave slide bar 18 are concave, and there is a gap between the pressing bar 20 and the positioning pressing bar 21.

[0037] In this embodiment, as Figure 8 - Figure 9 shown, at the top end of the laser welding head 2, a positioning slide plate 24 is fixedly installed. At the bottom end of the welding platform 1, a bottom plate 25 is inserted. On the upper surface of the positioning slide plate 24, an electric cylinder 26 is installed. On one side of the electric cylinder 26, a sliding guide plate 27 is fixedly connected. The sliding guide plate 27 is slidably connected to the positioning slide plate 24. On one side of the sliding guide plate 27, a socket slider 28 is fixedly installed. Inside the socket slider 28, a transmission screw rod 29 is threadedly connected. On the outer wall of the socket slider 28, a support groove frame 31 is slidably installed. The support groove frame 31 is fixedly connected to the bottom plate 25.

[0038] On one side of the inner wall of the support groove frame 31, a transmission motor 30 is fixedly installed. The transmission motor 30 is used to drive the transmission screw rod 29 to rotate. The controller 32 is fixed on one side of the support groove frame 31. Both the electric cylinder 26 and the transmission motor 30 are electrically connected to the controller 32, so as to drive the transmission screw rod 29 through the transmission motor 30. The transmission screw rod 29 drives the socket slider 28 to move under the action of the threaded transmission force. The socket slider 28 drives the sliding guide plate 27 to move along the support groove frame 31. The electric cylinder 26 makes the positioning slide plate 24 move, realizing the adjustment operation of the horizontal and vertical regional positions of the laser welding head 2.

[0039] The working principle of the automatic welding device for FPC flexible board and speaker of the present invention is as follows: First, when the present invention prepares for welding, the FPC flexible board and the speaker are placed and installed in the slot of the welding platform 1. The welding platform 1 is supported by the bottom plate 25, and the bottom plate 25 supports the support groove frame 31 to increase the stability of the support groove frame 31. The drive motor 30 drives the drive screw 29, and the drive screw 29 drives the socket slider 28 to move under the action of the screw driving force. The socket slider 28 drives the sliding guide plate 27 to move along the support groove frame 31. At the same time, the sliding guide plate 27 drives the support electric cylinder 26 to move, the electric cylinder 26 makes the positioning slide plate 24 move, the positioning slide plate 24 drives the laser welding head 2 to move. When the laser welding head 2 moves to the welding position of the FPC flexible board and the speaker, the drive motor 30 is turned off by the controller 32.

[0040] Secondly, when the present invention performs medium-sized dynamic adjustment of heat insulation welding, the moving direction can be referred to Figure 3 . When the required is the medium-sized heat insulation area frame 9, that is, the FPC flexible board and the speaker of the first model, the adjustment motor 3 is kept stationary. Since the lower surface of the medium-sized heat insulation area frame 9 is lower than the lower surfaces of the small-sized heat insulation area frame 8 and the large-sized heat insulation area frame 10, the electric cylinder 26 is used to push the positioning slide plate 24 downward. The positioning slide plate 24 drives the laser welding head 2 to move downward, and the laser welding head 2 drives the support ring 13 to move downward. The support ring 13 drives the reinforcement column 12 to move downward, and the reinforcement column 12 drives the medium-sized heat insulation area frame 9 to move downward. The medium-sized heat insulation area frame 9 covers the medium-sized heat insulation area of the welding point of the laser welding head 2, and the laser welding head 2 directly welds the FPC flexible board and the speaker of the first model. The high-temperature sputtering material will pass through the medium-sized heat insulation area frame 9 for dynamic heat insulation in the medium-sized heat insulation area.

[0041] At the same time, when the present invention performs small-sized dynamic adjustment of heat insulation welding, the moving direction can be referred to Figure 3 . When the required is the small-sized heat insulation area frame 8, that is, the FPC flexible board and the speaker of the second model, the controller 32 starts the adjustment motor 3. The adjustment motor 3 drives the rotating block 4 to rotate clockwise. The rotating block 4 drives the adjustment sliding frame 5 to rotate clockwise. The adjustment sliding frame 5 makes the adjustment sliding shaft 6 move downward, and the adjustment sliding frame 5 drives the adjustment rod 15 to move upward. The adjustment rod 15 drives the L-shaped connecting block 17 to move the large-sized heat insulation area frame 10 upward. At the same time, the adjustment sliding shaft 6 drives the two sliding rings 14 to slide along the adjustment sliding frame 5.

[0042] Adjusting the sliding shaft 6 will drive the pressing block 7 to move downward. The pressing block 7 drives the small heat insulation area frame 8 to move downward, and the small heat insulation area frame 8 drives it to slide downward along the outer wall of the laser welding head 2. At the same time, the small heat insulation area frame 8 drives the concave guiding strip 19 to move downward, and the concave guiding strip 19 slides downward along the inner wall of the medium heat insulation area frame 9. At the same time, the small heat insulation area frame 8 drives the positioning pressing strip 21 to move downward, and the positioning pressing strip 21 presses downward on the sensing block 22. After the sensing block 22 is stressed, it presses on the pressure sensor 23. When the pressure sensor 23 senses the pressure value, the adjustment motor 3 is turned off through the controller 32. In this way, the lower surface of the small heat insulation area frame 8 can be lower than the lower surface of the medium heat insulation area frame 9. The positioning sliding plate 24 is pushed downward by the electric cylinder 26. The positioning sliding plate 24 drives the laser welding head 2 to move downward. The laser welding head 2 drives the support ring 13 to make the support column 11 move downward. The support column 11 drives the adjustment motor 3 to make the adjustment sliding frame 5 move downward. The adjustment sliding frame 5 drives the adjustment sliding shaft 6 to make the pressing block 7 move downward. The pressing block 7 drives the small heat insulation area frame 8 to move downward synchronously with the laser welding head 2. In this way, the small heat insulation area frame 8 covers the small heat insulation area of the welding point of the laser welding head 2. The second type of FPC flexible board and the speaker are welded by the laser welding head 2. The high-temperature sputtering material can be insulated in a small area through the small heat insulation area frame 8, and the high temperature can be prevented from spreading to other areas.

[0043] At the same time, when the present invention performs large-scale dynamic adjustment of heat insulation welding, please refer to the moving direction Figure 3 - Figure 5 When the required large heat insulation area frame is 10, that is, for the third type of FPC flexible board and the speaker, the adjustment motor 3 is started through the controller 32. The adjustment motor 3 drives the rotating block 4 to rotate counterclockwise. The rotating block 4 drives the adjustment sliding frame 5 to rotate counterclockwise. The adjustment sliding frame 5 drives the adjustment rod 15 to move downward. The adjustment rod 15 and the sliding support ring 16 slide along the outer wall of the adjustment sliding frame 5. At the same time, the adjustment rod 15 drives the L-shaped connecting block 17 to move downward, and the L-shaped connecting block 17 makes the large heat insulation area frame 10 move downward. At the same time, the large heat insulation area frame 10 moves downward. The adjustment sliding shaft 6 will drive the pressing block 7 to move upward. The pressing block 7 drives the small heat insulation area frame 8 to move upward along the outer wall of the laser welding head 2. At the same time, the large heat insulation area frame 10 drives the concave sliding strip 18 to move downward. The concave sliding strip 18 slides downward along the inner wall of the medium heat insulation area frame 9. At the same time, the large heat insulation area frame 10 drives the pressing strip 20 to move downward. The pressing strip 20 presses on the sensing block 22. The sensing block 22 presses on the pressure sensor 23. After the pressure sensor 23 senses the pressure, the adjustment motor 3 is turned off through the controller 32.

[0044] In this way, the lower surface of the large heat insulation area frame 10 can be lower than the lower surface position of the medium heat insulation area frame 9. Then, the electric cylinder 26 is started through the controller 32. The electric cylinder 26 pushes the positioning slide plate 24 downward. The positioning slide plate 24 drives the laser welding head 2 to move downward. The laser welding head 2 drives the support ring 13 to move downward. The support ring 13 drives the support column 11 to move downward. The support column 11 causes the adjustment motor 3 to drive the rotating block 4 to move downward. The rotating block 4 drives the adjustment slide frame 5 to move downward. The adjustment slide frame 5 drives the adjustment slide shaft 6 to cause the pressing block 7 to move downward. The pressing block 7 drives the large heat insulation area frame 10 to move downward. The large heat insulation area frame 10 covers the large heat insulation area position. The third type of FPC flexible board and the speaker are welded through the laser welding head 2. The high-temperature sputtering isolation of the large area is realized through the large heat insulation area frame 10. According to different types of FPC flexible boards and speakers, the heat insulation area of the automatic welding of the FPC flexible board and the speaker can be dynamically adjusted as needed.

[0045] The content not described in detail in the specification belongs to the prior art well-known to those skilled in the art. The model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, since the electrical control components not mentioned belong to the prior art, they are not shown in the figure and will not be described here.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The automatic welding device for FPC flexible board and speaker, comprising a welding platform (1) and a controller (32), is characterized in that: Above the welding platform (1), there is a laser welding head (2), and a dynamic adjustment heat insulation mechanism is arranged on one side of the laser welding head (2); The dynamic adjustment heat insulation mechanism includes an adjustment motor (3) arranged on one side of the laser welding head (2), and the output end of the adjustment motor (3) is coaxially and fixedly connected with a rotating block (4). One end of the rotating block (4) is fixedly connected with an adjustment sliding frame (5). An adjustment sliding shaft (6) is slidably connected to the inner wall of the adjustment sliding frame (5) and at a position on the side of the rotating block (4). One end of the adjustment sliding shaft (6) is fixedly installed with a pressing block (7); One side of the pressing block (7) is fixedly installed with a small heat insulation area frame (8). An intermediate heat insulation area frame (9) is arranged outside the small heat insulation area frame (8), and a large heat insulation area frame (10) is arranged outside the intermediate heat insulation area frame (9).

2. The FPC flexible board and horn automatic welding device according to claim 1, characterized in that: The outer wall of the adjustment sliding shaft (6) and the inner wall of the adjustment sliding frame (5) are both smooth surfaces, and the vertical cross-sectional shape of the adjustment sliding shaft (6) is circular. The controller (32) is electrically connected to the adjustment motor (3).

3. The FPC flexible board and horn automatic welding device according to claim 1, characterized in that: The small heat insulation area frame (8), the intermediate heat insulation area frame (9), and the large heat insulation area frame (10) are all made of aluminum nitride ceramic material. The inner wall diameter of the intermediate heat insulation area frame (9) is larger than the inner wall diameter of the small heat insulation area frame (8), and the inner wall diameter of the large heat insulation area frame (10) is larger than the inner wall diameter of the intermediate heat insulation area frame (9); The lower surface of the large heat insulation area frame (10) is on the same horizontal plane as the lower surface of the small heat insulation area frame (8). The lower surface of the intermediate heat insulation area frame (9) is higher than the lower surface of the small heat insulation area frame (8), and the lower surface of the intermediate heat insulation area frame (9) is higher than the lower surface of the large heat insulation area frame (10).

4. The FPC flexible board and horn automatic welding device according to claim 1, characterized in that: The top end of the adjustment motor (3) is fixedly connected with a support column (11). A reinforcement column (12) is arranged on one side of the support column (11), and the bottom end of the reinforcement column (12) is fixedly connected to the intermediate heat insulation area frame (9); The top end of the reinforcement column (12) is fixedly installed with a support ring (13). The laser welding head (2) and the support column (11) are both fixedly connected to the support ring (13). The laser welding head (2) is electrically connected to the controller (32).

5. The FPC flexible board and horn automatic welding device according to claim 1, wherein: Both sides of the adjustment sliding frame (5) are slidably connected with sliding rings (14). Both of the sliding rings (14) are fixedly connected to the adjustment sliding shaft (6). The sliding rings (14) are slidably connected to the pressing block (7).

6. The automatic welding device for FPC flexible board and speaker according to claim 1, characterized in that: An adjustment rod (15) is slidably connected to the inner wall of the adjustment sliding frame (5) and near the large heat insulation area frame (10). Two sliding support rings (16) are fixedly connected to the outer wall of the adjustment rod (15). One end of the adjustment rod (15) is fixedly installed with an L-shaped connecting block (17). There is a gap between the L-shaped connecting block (17) and one of the sliding support rings (16); The L-shaped connecting block (17) is fixedly connected to the large heat insulation area frame (10).

7. The FPC flexible board and horn automatic welding device according to claim 6, characterized in that: The vertical cross-sectional shape of the L-shaped connecting block (17) is L-shaped. The two sliding support rings (16) are symmetrically arranged with respect to the adjusting rod (15). The outer wall of the adjusting rod (15) and the inner wall of the adjusting sliding frame (5) are both smooth surfaces.

8. The FPC flexible board and horn automatic welding device according to claim 1, characterized in that: One side of the inner wall of the large heat insulation area frame (10) is fixedly connected with a concave sliding strip (18). One side of the outer wall of the small heat insulation area frame (8) is fixedly installed with a concave guiding strip (19). The concave guiding strip (19) and the concave sliding strip (18) are both slidably connected to the medium heat insulation area frame (9); One side of the concave sliding strip (18) is provided with a pressing strip (20), and the pressing strip (20) is fixedly connected to the large heat insulation area frame (10). One side of the concave guiding strip (19) is provided with a positioning pressing strip (21), and the positioning pressing strip (21) is fixedly connected to the small heat insulation area frame (8); One side of the concave guiding strip (19) is provided with a sensing block (22). The bottom end of the sensing block (22) is fixedly installed with a pressure sensor (23). The pressure sensor (23) is fixedly connected to the medium heat insulation area frame (9). The pressure sensor (23) is used to sense the pressure of the sensing block (22).

9. The FPC flexible board and horn automatic welding device according to claim 8, characterized in that: The vertical cross-sectional shapes of the concave guiding strip (19) and the concave sliding strip (18) are both concave. There is a gap between the pressing strip (20) and the positioning pressing strip (21).

10. The FPC flexible board and horn automatic welding device according to claim 1, characterized in that: The top end of the laser welding head (2) is fixedly installed with a positioning sliding plate (24). The bottom end of the welding platform (1) is inserted with a bottom plate (25); An electric cylinder (26) is installed on the upper surface of the positioning sliding plate (24). One side of the electric cylinder (26) is fixedly connected with a sliding guide plate (27). The sliding guide plate (27) is slidably connected to the positioning sliding plate (24). One side of the sliding guide plate (27) is fixedly installed with a socket slider (28). A transmission screw rod (29) is threadedly connected to the inner wall of the socket slider (28). The outer wall of the socket slider (28) is slidably installed with a support groove frame (31). The support groove frame (31) is fixedly connected to the bottom plate (25); One side of the inner wall of the support groove frame (31) is fixedly installed with a transmission motor (30). The transmission motor (30) is used to drive the transmission screw rod (29) to rotate. The controller (32) is fixed on one side of the support groove frame (31). The electric cylinder (26) and the transmission motor (30) are both electrically connected to the controller (32).

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