CN117359079B

CN117359079B - Ultrasonic welding equipment and welding process for flexible circuit board

Info

Publication number: CN117359079B
Application number: CN202311518233.6A
Authority: CN
Inventors: 王言新; 吕永发; 冷启元; 谭海; 曾玉峰
Original assignee: Hubei Yongchuangxin Electronics Co ltd
Current assignee: Hubei Yongchuangxin Electronics Co ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-05-10
Anticipated expiration: 2043-11-13
Also published as: CN117359079A

Abstract

The invention relates to ultrasonic welding equipment and a welding process for a flexible circuit board, and relates to the field of welding, comprising a welding slide rail, wherein an electric slide block and a workbench are arranged on the welding slide rail in a sliding manner, the electric slide block is detachably connected with the workbench, a welding table is arranged on one side, far away from the workbench, of the welding slide rail, clamping mechanisms are arranged at the upper ends of the workbench and the welding table, the clamping mechanisms positioned on the workbench are used for clamping the flexible circuit board, and the clamping mechanisms positioned on the welding table are used for clamping the hard circuit board; the invention can solve the following problems: according to the invention, the positions of the flexible circuit board and the hard circuit board are adjusted through the clamping mechanism, so that the welding positions of the flexible circuit board and the hard circuit board are more accurate during welding, and the welding quality is improved; and secondly, the dust removal unit is used for cleaning the surface dust of the flexible circuit board and the surface dust of the hard circuit board, so that the welding is prevented from being unstable during welding, and the welding quality is further improved.

Description

Ultrasonic welding equipment and welding process for flexible circuit board

Technical Field

The invention relates to the field of welding, in particular to ultrasonic welding equipment and welding technology for a flexible circuit board.

Background

The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. It is favored because of its excellent properties such as light weight, thin thickness, and free bending and folding, while ultrasonic welding is a process of transmitting high-frequency vibration waves to the surfaces of two objects to be welded, and under pressure, causing the surfaces of the two objects to rub against each other to form fusion between molecular layers. The ultrasonic welding equipment is adopted to weld the flexible circuit board, and the welding device has the advantages of good weld stability, high strength, shorter welding time than other welding processes, no need of a complex ventilation system to remove smoke and no need of a cooling system to remove redundant heat.

Along with development of science and technology, a great deal of optimization is also carried out to flexible line way board ultrasonic welding equipment to the technician in relevant field, for carrying out more accurate contrast, chinese patent publication No. CN115070152a discloses a welding set of flexible line way board, including the shell, first mounting, a torsion spring, the door, the bin, welder and hard circuit board etc., the left and right sides of shell middle part front side all is equipped with first mounting, the rotation is equipped with the door between the first mounting, be connected with two first torsion springs between the first mounting of door upper portion left and right sides all with the homonymy, be equipped with the bin in the middle of the shell top, the bin inboard is connected with the welder that is used for the welding, hard circuit board has been placed in the welder left side. The welding device of the flexible circuit board can prevent smoke generated during welding from diffusing everywhere through the arranged shell, and meanwhile, the hard circuit board is only required to be placed on the left side of the welder, so that the welding device is matched with the welder to weld on the flexible circuit board.

However, in the process of soldering a flexible circuit board using the above-described prior art, there are the following disadvantages: 1. above-mentioned welding set of flexible circuit board can only fix the flexible circuit board through the mounting, can fix a position the welded position of flexible circuit board before can fixing the flexible circuit board, can reduce the cost of labor like this, further improved welded precision, improved welding quality.

2. The welding device of the flexible circuit board is not provided with a device for cleaning the surfaces of the flexible circuit board and the hard circuit board, and if the surfaces of the flexible circuit board and the hard circuit board can be cleaned, the phenomenon that the flexible circuit board is not firmly welded during welding can be avoided, and the welding quality is further improved.

Therefore, under the above stated viewpoints, the related art ultrasonic welding apparatus for flexible wiring boards has room for improvement.

Disclosure of Invention

In order to solve the problems, the invention provides ultrasonic welding equipment for a flexible circuit board, which comprises a welding slide rail, wherein an electric slide block and a workbench are arranged on the welding slide rail in a sliding manner, the electric slide block is detachably connected with the workbench, one side, far away from the workbench, of the welding slide rail is provided with a welding table, clamping mechanisms are arranged at the upper ends of the workbench and the welding table, the clamping mechanisms positioned on the workbench are used for clamping the flexible circuit board, and the clamping mechanisms positioned on the welding table are used for clamping the hard circuit board.

The clamping mechanism comprises a fixing plate, a supporting rod, middle position limiters, side position limiters, auxiliary positioners and a dust removing unit, wherein the fixing plate is arranged above the workbench or the welding table and is fixed on the workbench or the welding table through the supporting rod, the middle position limiters are arranged at the lower end of the fixing plate, the side position limiters are arranged at the two sides of the lower end of the fixing plate, the auxiliary positioners are arranged at one side, away from the welding slide rail, of the fixing plate, and the dust removing unit is arranged at one side, away from the auxiliary positioners, of the fixing plate.

The middle part locator is including driving cylinder, square clamp plate, flexible clamping assembly and rubber base, the lower extreme at the fixed plate is installed to the driving cylinder stiff end, and drives the cylinder lower extreme and install square clamp plate, is located on the workstation be provided with flexible clamping assembly on the square clamp plate, be located on the welding bench equidistant a plurality of detachable rubber bases that are provided with on the square clamp plate.

Preferably, the side stopper includes L shape backup pad, extrusion piece, location spout, location slider, square ejector pad, connecting threaded rod, regulating block, push pedal, location rubber layer, L shape connecting plate and extension spring that resets, the upper portion symmetry fixed mounting of square clamp plate has L shape backup pad, the horizontal segment bottom fixed mounting of L shape backup pad has triangle-shaped extrusion piece, and the lower terminal surface of extrusion piece sets up to arcwall face structure.

The utility model discloses a welding bench, including workstation, welding bench, locating slide upside fixed mounting has square ejector pad, square ejector pad and the arcwall face interference fit of extrusion piece, square ejector pad has a connection threaded rod towards one side threaded connection of square clamp plate, fixed cover is equipped with the regulating block on the connection threaded rod, the one end that square ejector pad was kept away from to the connection threaded rod rotates installs the push pedal, the push pedal is kept away from one side of connection threaded rod and is installed the location rubber layer, one side that square ejector pad deviates from the push pedal is provided with L shape connecting plate, and L shape connecting plate installs on workstation or welding bench lateral wall, install the extension spring that resets between L shape connecting plate and the locating slide.

Preferably, the flexible clamping assembly comprises an execution unit and a control unit, the execution unit comprises a cylinder barrel, an inflation and deflation hole, a round piston, a connecting rod, a hard pipe, a wind shielding shell, a wind shielding iron block, a pull-back spring, a telescopic pipe and a compression air bag, the cylinder barrel above the square pressing plate is fixedly arranged on the lower side of the fixing plate, the inflation and deflation hole is formed in the outer wall of the upper end of the cylinder barrel, the round piston is slidably arranged in the cylinder barrel through a sealing ring, the connecting rod is vertically arranged in the middle of the lower end of the round piston, the connecting rod penetrates through the bottom of the cylinder barrel and then is connected with the square pressing plate, and the connecting rod is also slidably matched with the bottom of the cylinder barrel through the sealing ring.

The cylinder bottom intercommunication has the stereoplasm pipe, and stereoplasm pipe bottom is provided with hollow structure's shell that keeps out the wind, just it is provided with the iron block that keeps out the wind to keep out the wind to slide in the shell that keeps out the wind, is provided with the pullback spring between iron block and the shell inside wall that keeps out the wind, it has flexible pipe to keep out the wind shell lower extreme intercommunication, is located on the workstation square clamp plate lower extreme is provided with compresses tightly the gasbag, the lower extreme of flexible pipe runs through behind the square clamp plate with compress tightly the gasbag intercommunication.

Preferably, the control unit includes dwang, drive gear, magnet, square slat, control slide rail and removal rack, the fixed plate downside rotates and is provided with the dwang, fixed mounting has drive gear on the one end outer wall that the fixed plate was kept away from to the dwang, on the dwang outer wall and correspond fixed mounting with the iron block that keeps out the wind have magnet, fixed plate downside fixed mounting has square slat, one side level that the fixed plate was kept away from to square slat is provided with the control slide rail, one side slidable mounting that the control slide rail is close to the dwang has the removal rack, and removes rack and drive gear engagement.

The control unit still includes first connecting rod, second connecting rod, movable block, L shape stopper, adjusts telescopic link, conflict board, adds the tight ring and adds the tight bolt, it is connected with first connecting rod to remove the rack downside rotation, first connecting rod lower extreme is provided with the second connecting rod through the round pin axle rotation, the downside of second connecting rod articulates there is the movable block, square clamp plate upside vertical direction symmetry sets up L shape stopper, and L shape stopper inner wall is contradicted with the movable block, square clamp plate upside level is provided with adjusts the telescopic link, one side fixed mounting that square clamp plate was kept away from to the flexible end of adjusting the telescopic link has the conflict board, and the conflict board is located the movable block directly over, the flexible pot head of adjusting the telescopic link is equipped with the tight ring, and adds the tight ring and adjust telescopic link stiff end upside fixedly, it is provided with the tight bolt through threaded connection to add the tight ring.

Preferably, the auxiliary positioner comprises a first rotating shaft, a first circular ring, a locking plate, a locking bolt, a first telescopic rod, an adjusting plate, an auxiliary spring rod, an auxiliary pressing plate, a compacting rubber block and a second telescopic rod, wherein the first rotating shaft is symmetrically arranged on the upper portion of the fixing plate, the first circular ring is sleeved on the first rotating shaft, the locking plate is fixedly arranged on the upper portion of the first rotating shaft, and the locking bolt is arranged on the locking plate in a penetrating mode through a threaded fit mode.

The utility model discloses a square clamp plate, including ring, adjusting plate, square clamp plate, adjusting plate, auxiliary spring rod, telescopic end and auxiliary pressing plate, horizontal direction fixed mounting has telescopic link one on the outer wall of ring one, telescopic end of telescopic link one keeps away from ring one end fixed mounting has the regulating plate, telescopic link one end fixed mounting has the auxiliary pressing plate is kept away from to the telescopic end of auxiliary spring rod, the downside fixed mounting of auxiliary pressing plate has the compaction rubber piece, rotate through telescopic link two between square clamp plate and the auxiliary pressing plate and be connected.

Preferably, the dust removal unit includes bellows, stripper plate, movable rod, divides air lock and hose, the fixed plate downside symmetry is provided with the bellows that is located L shape backup pad top, the bellows is inside to be provided with the stripper plate through the sealing washer slip, stripper plate downside middle part fixed mounting has the movable rod, the round hole that supplies the movable rod to pass is seted up to the bellows bottom, and passes through sealing ring sliding fit between round hole and the movable rod, and the movable rod is kept away from one end fixed mounting of stripper plate in L shape backup pad upside, one side middle part fixed mounting that the regulating plate was kept away from to the fixed plate has the air lock, through the hose intercommunication between bellows and the air lock.

Preferably, adjustment mechanism has still been set up on workstation upper portion, adjustment mechanism is including adjusting logical groove, square backup pad, supporting spring, synchronous slat, regulation spring bar, locking ring and locking bolt, the regulation logical groove has been seted up in the middle of the workstation upper portion, it is provided with square backup pad to adjust logical groove bottom top, equidistant symmetry installs a plurality of supporting springs between square backup pad and the regulation logical groove bottom, be provided with synchronous slat between square backup pad and the regulation logical groove bottom, equidistant a plurality of regulation spring bars that are provided with between synchronous slat and the regulation logical groove bottom, one of them the cover is equipped with the locking ring on the flexible end outer wall of regulation spring bar, and the locking ring is fixed with regulation spring bar stiff end upside, the locking ring is provided with locking bolt through threaded connection.

Preferably, the welding mechanism is arranged on one side of the width direction of the welding slide rail, the welding mechanism comprises a fixing table, a welding seat and a welding robot, the fixing table is arranged on one side of the width direction of the welding slide rail and one end close to the welding table, the welding seat is fixedly arranged on the top of the fixing table, and the welding robot is fixedly arranged on the top of the welding seat.

In addition, the invention also provides an ultrasonic welding process of the flexible circuit board, which comprises the following steps: s1, product feeding: the operator places the flexible circuit board and the hard circuit board on the square support plate and the welding table respectively.

S2, adjusting an auxiliary positioner: for the circuit board of adaptation different size specifications, ensure that flexible circuit board and hard circuit board keep fixed in the welding process, through supporting the rotation angle of tight bolt control auxiliary pressing plate, adjust the interval between auxiliary pressing plate and the fixed plate through telescopic link one simultaneously.

S3, height adjustment: in order to enable flexible circuit boards with different thicknesses to be always positioned on the upper side of the to-be-welded end of the hard circuit board during welding, the flexible circuit board is prevented from colliding with the hard circuit board during moving, the flexible circuit board and the hard circuit board are damaged, and the distance between the synchronous lath and the square supporting plate is controlled through the locking bolt.

S4, clamping a hard circuit board: in order to ensure that the welding end of the hard circuit board is positioned at an accurate position before welding, and in order to prevent the hard circuit board from shifting during welding, the position of the to-be-welded end of the hard circuit board is controlled by driving the air cylinder, and the hard circuit board is fixed on the welding table.

S5, clamping a flexible circuit board: in order to ensure that the welding end of the flexible circuit board is positioned at an accurate position before welding, and in order to prevent the flexible circuit board from shifting during welding and damaging the flexible circuit board during fixing, the position of the flexible circuit board to be welded end is controlled by a driving cylinder, the flexible circuit board is fixed on a square supporting plate, and meanwhile, the inflating and deflating of the compression air bag is controlled by a round piston.

S6, surface dedusting: in order to avoid the phenomenon that the flexible circuit board and the hard circuit board are not firmly welded due to dust influence during welding, the air dividing block is controlled to blow evenly through the extruding plate.

S7, welding: in order to realize automatic welding, the flexible circuit board is contacted with the hard circuit board through the electric sliding block, and automatic welding is realized through the welding robot.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the invention, the positions of the flexible circuit board and the hard circuit board are adjusted through the clamping mechanism, so that the welding positions of the flexible circuit board and the hard circuit board are more accurate in welding, the flexible circuit board and the hard circuit board can be flexibly fixed in the welding process, the flexible circuit board and the hard circuit board are prevented from being deviated in the welding process, and meanwhile, the flexible fixation is adopted in the fixing process, so that the flexible circuit board and the hard circuit board are prevented from being damaged.

2. According to the invention, the dust removal unit is used for cleaning the dust on the surfaces of the flexible circuit board and the hard circuit board, so that the phenomenon that welding is unstable during welding is prevented, and the welding quality is further improved.

3. The flexible circuit board and the hard circuit board are further fixed through the auxiliary locator, the flexible circuit board and the hard circuit board can be adjusted according to different shapes of the flexible circuit board and the hard circuit board, the positions of components on the flexible circuit board and the hard circuit board can be adjusted according to the positions of components on the flexible circuit board and the hard circuit board, the flexible circuit board and the hard circuit board are further prevented from being damaged and offset in the welding process when being fixed, and the welding quality is improved.

4. According to the invention, the flexible circuit boards with different thicknesses can be always positioned on the upper side of the to-be-welded end of the hard circuit board during welding through the adjusting mechanism, so that the flexible circuit board is prevented from colliding with the hard circuit board during moving, and the flexible circuit board and the hard circuit board are prevented from being damaged.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the clamping mechanism of the present invention.

FIG. 3 is a schematic view of the structure of the mid-positioner of the present invention.

FIG. 4 is a schematic diagram of an execution unit of the present invention.

Fig. 5 is a schematic structural view of the control unit of the present invention.

FIG. 6 is a schematic view of the auxiliary positioner of the present invention.

Fig. 7 is a schematic structural view of the adjusting mechanism of the present invention.

Fig. 8 is a schematic structural view of the welding mechanism of the present invention.

Fig. 9 is a schematic view of the side stopper of the present invention.

Fig. 10 is a schematic structural view of the dust removing unit of the present invention.

In the figure, 1, a workbench; 10. welding a sliding rail; 11. an electric slide block; 2. a welding table; 3. a clamping mechanism; 30. a fixing plate; 31. a support rod; 4. a middle positioner; 5. a side Fang Xianwei; 6. an auxiliary positioner; 7. a dust removal unit; 40. a driving cylinder; 41. a square pressing plate; 42. a flexible clamping assembly; 43. a rubber base; 420. an execution unit; 4200. a cylinder; 4201. a gas filling and discharging hole; 4202. a circular piston; 4203. a connecting rod; 4204. a hard tube; 4205. a wind shielding housing; 4206. a wind shielding iron block; 4207. pulling back the spring; 4208. a telescopic tube; 4209. compressing the air bag; 421. a control unit; 4210. a rotating lever; 4211. a drive gear; 4212. a magnet; 4213. square lath; 4214. controlling the sliding rail; 4215. moving the rack; 4216. a first link; 4217. a second link; 4218. a moving block; 4219. an L-shaped limiting block; 4220. adjusting the telescopic rod; 4221. a contact plate; 4222. a tightening ring; 4223. tightening the bolts; 60. a first rotating shaft; 61. a first circular ring; 62. a locking plate; 63. abutting the bolt; 64. a first telescopic rod; 65. an adjusting plate; 66. an auxiliary spring rod; 67. an auxiliary pressing plate; 68. compacting the rubber block; 69. a second telescopic rod; 8. an adjusting mechanism; 80. regulating the through groove; 81. a square support plate; 82. a support spring; 83. synchronizing the laths; 84. adjusting a spring rod; 85. a locking ring; 86. a locking bolt; 9. a welding mechanism; 90. a fixed table; 91. a welding seat; 92. a welding robot; 50. an L-shaped support plate; 51. extruding a block; 52. positioning a chute; 53. positioning a sliding block; 54. square push block; 55. connecting a threaded rod; 56. an adjusting block; 57. a push plate; 58. a positioning rubber layer; 59. an L-shaped connecting plate; 510. resetting the tension spring; 70. a wind box; 71. an extrusion plate; 72. a moving rod; 73. dividing air blocks; 74. and (3) a hose.

Detailed Description

Embodiments of the invention are described in detail below with reference to fig. 1-10, but the invention can be practiced in many different ways as defined and covered by the claims.

The embodiment of the application discloses flexible circuit board ultrasonic welding equipment, which is mainly applied to the process of welding a flexible circuit board, can flexibly fix the flexible circuit board and a hard circuit board in technical effect, prevent the flexible circuit board and the hard circuit board from moving in the welding process, prevent the flexible circuit board and the hard circuit board from being damaged in the fixing process, particularly adjust the positions of the ends to be welded of the flexible circuit board and the hard circuit board before fixing the flexible circuit board and the hard circuit board, improve the welding accuracy, further improve the welding quality, and remove dust on the surfaces of the flexible circuit board and the hard circuit board while fixing the flexible circuit board and the hard circuit board, prevent the flexible circuit board and the hard circuit board from being not firmly welded in the welding process, and further improve the welding quality.

Referring to fig. 1, an ultrasonic welding device for a flexible circuit board comprises a welding slide rail 10, an electric slide block 11, a workbench 1, a welding table 2 and a clamping mechanism 3, wherein the electric slide block 11 and the workbench 1 are slidably arranged on the welding slide rail 10, the electric slide block 11 is detachably connected with the workbench 1, and the electric slide block 11 slides left and right with the workbench 1 under the limitation of the welding slide rail 10; one side of the welding slide rail 10, which is far away from the workbench 1, is provided with a welding table 2, clamping mechanisms 3 are arranged at the upper ends of the workbench 1 and the welding table 2, the clamping mechanisms 3 on the workbench 1 are used for clamping a flexible circuit board, and the clamping mechanisms 3 on the welding table 2 are used for clamping a hard circuit board.

In this scheme an ultrasonic welding equipment of flexible line way board, need fix a position the fixture 3 fixed through welding bench 2 with the rigid line way board, still fix a position the fixture 3 fixed through workstation 1 with the flexible line way board, then bring workstation 1 to make flexible line way board and rigid line way board wait to weld the end laminating through electronic slider 11 to guarantee that follow-up welding goes on smoothly.

Referring to fig. 2, in order to make the welding position of the flexible circuit board and the hard circuit board more accurate during welding, and to flexibly fix the flexible circuit board and the hard circuit board during welding, to prevent the flexible circuit board and the hard circuit board from being deviated during welding, in the embodiment of the present solution, a clamping mechanism 3 is provided; specifically, fixture 3 includes fixed plate 30, bracing piece 31, middle part locator 4, side stopper 5, auxiliary positioning ware 6 and dust removal unit 7, and workstation 1 or welding bench 2 top is provided with fixed plate 30, and fixed plate 30 passes through bracing piece 31 to be fixed on workstation 1 or welding bench 2, and fixed plate 30 lower extreme is provided with middle part locator 4, and middle part locator 4 waits that the welded end carries out vertical fixation to flexible line way board or rigid line way board.

The two sides below the fixed plate 30 are provided with the side limiters 5, and the positions of the ends to be welded of the flexible circuit board and the hard circuit board can be adjusted by the side limiters 5, so that the positions of the flexible circuit board and the hard circuit board are more accurate during welding; the auxiliary positioner 6 is arranged on one side of the fixed plate 30 far away from the welding slide rail 10, and the auxiliary positioner 6 can be adapted to circuit boards with different sizes, so that the flexible circuit board and the hard circuit board are ensured to be kept fixed in the welding process; one side of the fixed plate 30, which is away from the auxiliary positioner 6, is provided with a dust removing unit 7, and the dust removing unit 7 can remove dust impurities on the surfaces of the flexible circuit board and the hard circuit board, so that the flexible circuit board and the hard circuit board are prevented from being infirm in welding due to dust influence.

In a specific implementation process, the side limiter 5 adjusts to-be-welded ends of the flexible circuit board and the hard circuit board to a proper position, then the middle positioner 4 and the auxiliary positioner 6 fix the flexible circuit board and the hard circuit board, and the dust removing unit 7 removes dust on the surfaces of the flexible circuit board and the hard circuit board in the process.

Referring to fig. 3, in order to fix the ends to be soldered of the flexible circuit board and the rigid circuit board, based on this, in a specific embodiment of the present solution, a middle positioner 4 is provided; specifically, the middle positioner 4 includes a driving cylinder 40, a square pressing plate 41, a flexible clamping assembly 42 and a rubber base 43, the fixed end of the driving cylinder 40 is installed at the lower end of the fixed plate 30, the square pressing plate 41 is installed at the lower end of the driving cylinder 40, and the driving cylinder 40 can move up and down with the square pressing plate 41 for longitudinally fixing a flexible circuit board or a hard circuit board; a flexible clamping assembly 42 is arranged on the square pressing plate 41 positioned on the workbench 1, and the flexible clamping assembly 42 can prevent damage to components on the flexible circuit board during fixing; be located square clamp plate 41 on the welding bench 2 equidistant a plurality of detachable rubber base 43 that are provided with, rubber base 43 can treat the welded end of rigid circuit board and carry out flexible fixation, and can dismantle rubber base 43 according to the last components and parts position of rigid circuit board treating the welded end, avoid the components and parts on the rubber base 43 to crush.

Referring to fig. 4, in order to prevent the to-be-soldered end of the flexible circuit board from damaging the components with the soldered end on the flexible circuit board when the to-be-soldered end is fixed, in the embodiment of the present solution, a flexible clamping assembly 42 is provided; the specific flexible clamping assembly 42 comprises an execution unit 420 and a control unit 421, wherein the execution unit 420 comprises a cylinder 4200, an air charging and discharging hole 4201, a round piston 4202, a connecting rod 4203, a hard tube 4204, a wind shield shell 4205, a wind shield iron block 4206, a pull-back spring 4207, a telescopic tube 4208 and a compression air bag 4209, the lower side of the fixed plate 30 is fixedly provided with the cylinder 4200 positioned above the square pressing plate 41, and the outer wall of the upper end of the cylinder 4200 is provided with the air charging and discharging hole 4201 for balancing the air pressure of the cylinder 4200; a circular piston 4202 is slidably arranged inside the cylinder 4200 through a seal ring for compressing the gas in the cylinder 4200; the middle part of the lower end of the circular piston 4202 is vertically provided with a connecting rod 4203, the connecting rod 4203 penetrates through the bottom of the cylinder 4200 and then is connected with the square pressing plate 41, the connecting rod 4203 is in sliding fit with the bottom of the cylinder 4200 through a sealing ring, the connecting rod 4203 can drive the circular piston 4202 to move up and down under the limitation of the cylinder 4200, and the up and down movement of the circular piston 4202 can compress or discharge gas in the cylinder 4200.

The bottom of the cylinder 4200 is communicated with a hard pipe 4204, a wind shielding shell 4205 with a hollow structure is arranged at the bottom of the hard pipe 4204, a wind shielding iron block 4206 is arranged in the wind shielding shell 4205 in a sliding manner, and the wind shielding iron block 4206 can block the hard pipe 4204; a pull-back spring 4207 is disposed between the windward block 4206 and the inside wall of the windward shell 4205, the pull-back spring 4207 being capable of always providing a force to the windward block 4206 to move toward the inside wall of the windward shell 4205; the lower end of the wind shielding shell 4205 is communicated with a telescopic pipe 4208, a compression air bag 4209 is arranged at the lower end of the square pressing plate 41 positioned above the workbench 1, and the lower end of the telescopic pipe 4208 penetrates through the square pressing plate 41 and then is communicated with the compression air bag 4209.

In a specific implementation process, the driving cylinder 40 moves up and down along with the square pressing plate 41 and also moves up and down along with the connecting rod 4203 and the circular piston 4202, the circular piston 4202 compresses and discharges the gas in the cylinder 4200, when the gas is compressed, if the wind shielding iron block 4206 does not block the hard tube 4204 any more, then the gas in the cylinder 4200 is transmitted to the compression air bag 4209 through the hard tube 4204 and the telescopic tube 4208, when the gas is discharged, if the wind shielding iron block 4206 does not block the hard tube 4204 any more, then the gas in the compression air bag 4209 is transmitted into the cylinder 4200 through the hard tube 4204 and the telescopic tube 4208 and discharged through the air charging and discharging hole 4201, so that the air charging and discharging of the compression air bag 4209 is realized, when the compression air bag 4209 is inflated, the compression air bag 4209 can fix the flexible circuit board longitudinally, prevent the flexible circuit board from shifting when welding, and meanwhile, the components on the flexible circuit board are prevented from being crushed by the compression air bag 4209; when the compression balloon 4209 is contracted, the compression balloon 4209 is no longer longitudinally fixed to the flexible circuit board, allowing the operator to remove the flexible circuit board.

Referring to fig. 5, namely, a control unit 421 in the present application: specifically, the control unit 421 includes a rotation rod 4210, a driving gear 4211, a magnet 4212, a square slat 4213, a control slide 4214 and a moving rack 4215, the rotation rod 4210 is rotatably disposed at the lower side of the fixed plate 30, the driving gear 4211 is fixedly mounted on the outer wall of one end of the rotation rod 4210 far away from the fixed plate 30, the magnet 4212 is fixedly mounted on the outer wall of the rotation rod 4210 and corresponds to the wind shielding iron block 4206, when the driving gear 4211 rotates, the rotation rod 4210 and the magnet 4212 can be driven to rotate together until the magnet 4212 faces the wind shielding iron block 4206, at this time, the magnet 4212 attracts the wind shielding iron block 4206, so that the wind shielding iron block 4206 is not blocked by the hard pipe 4204 any more, at this time, compressed gas in the cylinder 4200 is transmitted into the compression air bag 4209 through the hard pipe 4204 and the telescopic pipe 4208, so as to realize the expansion of the compression air bag 4209; the lower side of the fixed plate 30 is fixedly provided with a square slat 4213, one side of the square slat 4213 away from the fixed plate 30 is horizontally provided with a control slide rail 4214, one side of the control slide rail 4214 close to the rotating rod 4210 is slidably provided with a movable rack 4215, the movable rack 4215 is meshed with the driving gear 4211, and the movable rack 4215 can slide along the control slide rail 4214 to control the rotation of the driving gear 4211.

The control unit 421 further comprises a first link 4216, a second link 4217, a moving block 4218, an L-shaped limiting block 4219, an adjusting telescopic rod 4220, a contact plate 4221, a clamping ring 4222 and a clamping bolt 4223, wherein the lower side of the moving rack 4215 is rotationally connected with the first link 4216, the lower end of the first link 4216 is rotationally provided with the second link 4217 through a pin shaft, the lower side of the second link 4217 is hinged with the moving block 4218, and when the moving block 4218 moves up and down, the moving rack 4215 is pulled to reciprocate along the control slide rail 4214 through the first link 4216 and the second link 4217; the upper side of the square pressing plate 41 is symmetrically provided with an L-shaped limiting block 4219 in the vertical direction, the inner wall of the L-shaped limiting block 4219 is in contact with the moving block 4218, and the L-shaped limiting block 4219 can enable the moving block 4218 to only vertically reciprocate.

An adjusting telescopic rod 4220 is horizontally arranged on the upper side of the square pressing plate 41, a blocking plate 4221 is fixedly arranged on one side, far away from the square pressing plate 41, of the telescopic end of the adjusting telescopic rod 4220, the blocking plate 4221 is located right above the moving block 4218, and when the square pressing plate 41 drives the adjusting telescopic rod 4220 to move downwards, the blocking plate 4221 can drive the moving block 4218 to move downwards together; the telescopic end of the adjusting telescopic rod 4220 is sleeved with a tightening ring 4222, the tightening ring 4222 is fixed on the top side of the fixed end of the adjusting telescopic rod 4220, the tightening ring 4222 is provided with a tightening bolt 4223 through threaded connection, the tightening ring 4222 can be tightened on the telescopic end of the adjusting telescopic rod 4220 through rotating the tightening bolt 4223, the telescopic end of the adjusting telescopic rod 4220 is fixed, when the height of the adjusting telescopic rod 4220 needs to be adjusted, the tightening bolt 4223 can be rotated again to enable the telescopic end of the adjusting telescopic rod 4220 not to be tightened, and then the height of the telescopic end of the adjusting telescopic rod 4220 can be adjusted.

In a specific implementation process, firstly, a tightening bolt 4223 is loosened, the height of the telescopic end of an adjusting telescopic rod 4220 is adjusted, then the tightening bolt 4223 is tightened, at this time, a driving cylinder 40 drives a square pressing plate 41 to move downwards to a proper position, in the process, the square pressing plate 41 firstly drives the adjusting telescopic rod 4220 and a pressing plate 4221 to move downwards for a certain distance, so that gas in a cylinder 4200 is compressed by a circular piston 4202, then the square pressing plate 41 then drives a moving block 4218 to move downwards under the limit of an L-shaped limiting block 4219 through the adjusting telescopic rod 4220 and the pressing plate 4221, the moving block 4218 drives a first connecting rod 4216 and a second connecting rod 4217 to move downwards together, the second connecting rod 4217 drives a moving rack 4215 to move, the moving rack 4211 drives a driving gear 4210 and a magnet 4212 to rotate until the magnet 4212 faces a wind shielding iron block 4206, at this time, the magnet 4212 attracts the wind shielding iron block 4206, so that the wind shielding iron block 4206 does not block up a hard pipe 4204, namely, the hard pipe 4204 is compressed tightly, and the air bag 4209 is compressed tightly; when the flexible circuit board is welded, the welded flexible circuit board needs to be removed, at this time, the driving cylinder 40 moves upwards to reset the square pressing plate 41, in the process, the square pressing plate 41 moves upwards by a distance with the adjusting telescopic rod 4220 and the abutting plate 4221, so that the air in the compressed air bag 4209 is transmitted into the cylinder 4200 through the telescopic pipe 4208 and the hard pipe 4204, then the square pressing plate 41 contacts with the moving block 4218 and drives the moving block 4218 to push upwards under the limit of the L-shaped limit, then the moving block 4218 moves upwards by the first connecting rod 4216 and the second connecting rod 4217, the second connecting rod 4217 drives the moving rack 4215 to move, the moving rack 4215 drives the driving gear 4211, the rotating rod 4210 and the magnet 4212 to rotate until the magnet 4212 resets, at this time, the magnet 4212 does not attract the air shielding iron block 4206, and the air in the air shielding iron block 4206 moves to block 4204 under the action of the pull-back spring 4207, so that the air in the air bag 4200 cannot be transmitted into the compressed air bag 4209 through the hard pipe 4204 and the telescopic pipe 4208.

Referring to fig. 6, in order to adapt to circuit boards of different sizes and specifications, it is ensured that the flexible circuit board and the rigid circuit board remain fixed during the soldering process, based on which, in a specific embodiment of the present solution, an auxiliary locator 6 is provided; specifically, the auxiliary positioner 6 includes a first rotating shaft 60, a first ring 61, a locking plate 62, a tightening bolt 63, a first telescopic rod 64, an adjusting plate 65, an auxiliary spring rod 66, an auxiliary pressing plate 67, a pressing rubber block 68 and a second telescopic rod 69, the upper portion of the fixed plate 30 is symmetrically provided with the first rotating shaft 60, the first rotating shaft 60 is rotatably sleeved with the first ring 61, and the first ring 61 rotates on the first rotating shaft 60; the locking plate 62 is fixedly arranged on the upper portion of the first rotating shaft 60, the locking plate 62 is provided with the abutting bolt 63 in a penetrating mode through threads, the abutting bolt 63 can abut against the first circular ring 61 through rotating the abutting bolt 63, so that the first circular ring 61 is fixed, when the rotating angle of the first circular ring 61 needs to be adjusted, the abutting bolt 63 can be rotated again to prevent the abutting bolt from abutting against the first circular ring 61, and then the rotating angle of the first circular ring 61 can be adjusted.

The telescopic rod I64 is fixedly arranged on the outer wall of the circular ring I61 in the horizontal direction, the telescopic end of the telescopic rod I64 is fixedly provided with the adjusting plate 65 far away from the circular ring I61, the position of the adjusting plate 65 can be adjusted through the rotating shaft I60 and the circular ring I61, and the distance between the adjusting plate 65 and the circular ring I61 can be adjusted through the telescopic rod I64; an auxiliary spring rod 66 is fixedly arranged in the vertical direction of the lower part of the adjusting plate 65, an auxiliary pressing plate 67 is fixedly arranged at one end, far away from the adjusting plate 65, of the telescopic end of the auxiliary spring rod 66, a compression rubber block 68 is fixedly arranged at the lower side of the auxiliary pressing plate 67, and the auxiliary pressing plate 67 performs auxiliary compression on the flexible circuit board or the hard circuit board through the compression rubber block 68; the square pressing plate 41 and the auxiliary pressing plate 67 are rotatably connected through a second telescopic rod 69, and the second telescopic rod 69 enables the auxiliary pressing plate 67 to move up and down together when the square pressing plate 41 moves up and down.

In a specific implementation process, an operator rotates the abutting bolt 63 to enable the abutting bolt 63 not to abut against the first circular ring 61 any more, then the operator adjusts the adjusting plate 65, the auxiliary spring rod 66, the auxiliary pressing plate 67 and the pressing rubber block 68 to a proper position through the first circular ring 61 and the first telescopic rod 64 according to the size specification of the flexible circuit board or the hard circuit board, meanwhile, the second rotating shaft, the second circular ring and the second telescopic rod 69 are also adjusted, finally, the operator rotates the abutting bolt 63 again to enable the abutting bolt 63 to abut against the first circular ring 61 again, the first circular ring 61 is fixed, and when the square pressing plate 41 moves up and down, the second telescopic rod 69 drives the auxiliary pressing plate 67 and the pressing rubber block 68 to move up and down, so that the flexible circuit board and the hard circuit board are further pressed.

Specifically, after the hard circuit board is fixed on the welding table 2, the flexible circuit board is placed on the workbench 1, the middle positioner 4 and the side limiters 5 are used for initially limiting the hard circuit board, then the electric sliding block 11 is used for driving the workbench 1 to move until the flexible circuit board is ensured to be in contact with the to-be-welded end of the hard circuit board, the square pressing plate 41 continues to move downwards, after the side limiters 5 just limit two sides of the flexible circuit board, the flexible clamping assembly 42 at the upper end of the square pressing plate 41 starts to operate, namely, gas in the cylinder 4200 enters the compression air bag 4209, so that the compression air bag 4209 is inflated until the compression air bag 4209 compresses the flexible circuit board, and at the moment, the compression of the flexible circuit board is completed.

However, since the thicknesses of the hard circuit board and the flexible circuit board with different specifications and sizes are different, that is, the interval between the lower surface of the flexible circuit board and the upper surface of the soldering station 2 is changed, but since the flexible circuit board is placed on the workbench 1, the height of the flexible circuit board cannot be adjusted, that is, there is a limitation, the invention is also provided with the adjusting mechanism 8 at the upper part of the workbench 1.

Referring to fig. 7, specifically, the adjusting mechanism 8 includes an adjusting through groove 80, a square supporting plate 81, supporting springs 82, a synchronous lath 83, an adjusting spring rod 84, a locking ring 85 and a locking bolt 86, the adjusting through groove 80 is provided in the middle of the upper portion of the workbench 1, the square supporting plate 81 is provided above the bottom of the adjusting through groove 80, a plurality of supporting springs 82 are symmetrically installed at equal intervals between the square supporting plate 81 and the bottom of the adjusting through groove 80, and the supporting springs 82 can always provide upward thrust for the square supporting plate 81.

A synchronous slat 83 is arranged between the square supporting plate 81 and the bottom of the adjusting through groove 80, a plurality of adjusting spring rods 84 are arranged between the synchronous slat 83 and the bottom of the adjusting through groove 80 at equal intervals, the adjusting spring rods 84 can control the distance between the synchronous slat 83 and the square supporting plate 81, and the synchronous slat 83 can ensure that the rest adjusting spring rods 84 are adjusted together while one of the adjusting spring rods 84 is adjusted; the locking ring 85 is sleeved on the outer wall of the telescopic end of one adjusting spring rod 84, the locking ring 85 is fixed on the top side of the fixed end of the adjusting spring rod 84, the locking ring 85 is provided with the locking bolt 86 through threaded connection, the locking ring 85 can be locked on the telescopic end of the adjusting spring rod 84 through rotating the locking bolt 86, so that the telescopic end of the adjusting spring rod 84 is fixed, when the distance between the synchronous lath 83 and the square supporting plate 81 needs to be adjusted, the locking bolt 86 can be rotated again to enable the synchronous lath 83 not to be located on the telescopic end of the locking adjusting spring rod 84, and then the distance between the synchronous lath 83 and the square supporting plate 81 can be adjusted.

In a specific implementation process, according to the thickness of the flexible circuit board, an operator needs to adjust the distance between the synchronous lath 83 and the square supporting plate 81, the locking bolt 86 needs to be rotated in the process, the operator adjusts the height of one of the adjusting spring rods 84, and then the rest adjusting spring rods 84 are also adjusted together through the synchronous lath 83, so that the flexible circuit boards with different thicknesses can be always positioned on the upper side of the to-be-welded end of the rigid circuit board when being welded, the flexible circuit board and the to-be-welded end of the rigid circuit board are ensured to be tightly attached, the flexible circuit board is prevented from colliding with the rigid circuit board when moving, and damage is caused to the flexible circuit board and the rigid circuit board.

Referring to fig. 8, in order to realize automated welding, a welding mechanism 9 is provided on one side in the width direction of the welded rail 10; specifically, the welding mechanism 9 includes a fixed table 90, a welding seat 91 and a welding robot 92, one side along the width direction of the welding slide rail 10 and one end close to the welding table 2 are provided with the fixed table 90, the welding seat 91 is fixedly installed at the top of the fixed table 90, the welding robot 92 is fixedly installed at the top of the welding seat 91, the purpose of automatic welding can be achieved by the welding robot 92, and an executing end of the welding robot 92 is provided with ultrasonic welding equipment for ultrasonic welding between a flexible circuit board and a hard circuit board.

Wherein the welding robot 92 is a six-degree-of-freedom robot, and the ultrasonic welding apparatus and the welding robot 92 are all common prior art, and will not be described herein.

As shown in fig. 9, in order to make the welding position of the flexible wiring board and the hard wiring board more accurate at the time of welding, a side stopper 5 is proposed; specifically, the side limiter 5 includes an L-shaped support plate 50, an extrusion block 51, a positioning chute 52, a positioning slider 53 and a square pushing block 54, the upper portion of the square pressing plate 41 is symmetrically and fixedly provided with the L-shaped support plate 50, the bottom of the horizontal section of the L-shaped support plate 50 is fixedly provided with the triangular extrusion block 51, the lower end surface of the extrusion block 51 is in an arc-shaped surface structure, and the square pressing plate 41 drives the L-shaped support plate 50 and the extrusion block 51 to move synchronously when moving up and down.

A positioning sliding groove 52 is formed in the upper end of the workbench 1 or the welding table 2 and corresponds to the extrusion block 51, a positioning sliding block 53 is slidably arranged in the positioning sliding groove 52, and the positioning sliding block 53 can slide along the positioning sliding groove 52; the square push block 54 is fixedly arranged on the upper side of the positioning slide block 53, the square push block 54 is in interference fit with the arc-shaped surface of the extrusion block 51, and when the extrusion block 51 moves downwards, the square push block 54 is pushed to move towards the middle of the workbench 1 or the welding table 2.

The side limiter 5 further comprises a connecting threaded rod 55, a push plate 57, a positioning rubber layer 58, an adjusting block 56, an L-shaped connecting plate 59 and a reset tension spring 510, wherein the connecting threaded rod 55 is connected to one side of the square push block 54, which faces the square pressing plate 41, the push plate 57 is rotatably installed at one end of the connecting threaded rod 55, which is far away from the square push block 54, the positioning rubber layer 58 is installed at one side of the push plate 57, which is far away from the connecting threaded rod 55, and the movement of the square push block 54 can drive the connecting threaded rod 55, the push plate 57 and the positioning rubber layer 58 to move together, so that the limit on two sides of a flexible circuit board or a hard circuit board is realized; meanwhile, the adjusting block 56 is fixedly sleeved on the connecting threaded rod 55, and the distance between the square push block 54 and the push plate 57 can be adjusted by rotating the adjusting block 56 so as to adapt to flexible circuit boards or hard circuit boards with different sizes and shapes.

The square ejector pad 54 is provided with L shape connecting plate 59 on one side that deviates from push pedal 57, and L shape connecting plate 59 installs on workstation 1 or welding bench 2 lateral wall, installs reset extension spring 510 between L shape connecting plate 59 and the location slider 53, and reset extension spring 510 can provide the pulling force that removes to L shape connecting plate 59 for the location slider 53 all the time.

In a specific implementation process, an operator firstly adjusts the distance between the square push block 54 and the push plate 57 through the adjusting block 56 according to the width of the flexible circuit board or the hard circuit board, then when the square pressing plate 41 drives the L-shaped supporting plate 50 and the pressing block 51 to move downwards, the pressing block 51 pushes the square push block 54 to enable the square push block 54 and the positioning sliding block 53 to move towards the middle of the workbench 1 or the welding table 2 along the positioning sliding groove 52, and meanwhile, the square push block 54 also drives the connecting threaded rod 55, the push plate 57 and the positioning rubber layer 58 to move so that the positioning rubber layer 58 adjusts the welding end position of the flexible circuit board or the hard circuit board, and when the square pressing plate 41 drives the L-shaped supporting plate 50 and the pressing block 51 to move upwards, the positioning rubber layer 58, the push plate 57, the connecting threaded rod 55, the square push block 54 and the positioning sliding block 53 are reset along the positioning sliding groove 52 through the reset tension spring 510.

Referring to fig. 10, in order to avoid that the flexible wiring board and the hard wiring board are not firmly soldered due to dust at the time of soldering, a dust removing unit 7 is proposed; specifically, the dust removal unit 7 includes bellows 70, stripper plate 71, movable rod 72, divide air block 73 and hose 74, and fixed plate 30 downside symmetry is provided with bellows 70 that is located L shape backup pad 50 top, and bellows 70 inside is provided with stripper plate 71 through the sealing washer slip, can compress down the gas in the bellows 70 when stripper plate 71 moves down, has offered the air vent at the top of bellows 70 simultaneously for balanced bellows 70 and be located the atmospheric pressure of stripper plate 71 top.

The middle part of the lower side of the extrusion plate 71 is fixedly provided with a movable rod 72, the bottom of the bellows 70 is provided with a round hole for the movable rod 72 to pass through, the round hole is in sliding fit with the movable rod 72 through a sealing ring, one end of the movable rod 72, which is far away from the extrusion plate 71, is fixedly arranged on the upper side of the L-shaped supporting plate 50, and when the L-shaped supporting plate 50 moves downwards, the movable rod 72 is driven to synchronously move downwards, and then the movable rod 72 drives the extrusion plate 71 to synchronously move downwards; the middle part of one side of the fixed plate 30 far away from the adjusting plate 65 is fixedly provided with a gas dividing block 73, the air box 70 is communicated with the gas dividing block 73 through a hose 74, compressed gas in the air box 70 can be transmitted into the gas dividing block 73 through the hose 74, and the gas dividing block 73 can uniformly blow the gas to the flexible circuit board or the hard circuit board.

In a specific implementation process, the square pressing plate 41 drives the L-shaped supporting plate 50 to move downwards, the L-shaped supporting plate 50 can drive the moving rod 72 and the extrusion plate 71 to move downwards in the bellows 70, gas in the bellows 70 is transmitted to the gas distribution block 73 through the hose 74, the gas is uniformly blown to the flexible circuit board or the hard circuit board through the gas distribution block 73, and when the square pressing plate 41 drives the L-shaped supporting plate 50 to move upwards, the L-shaped supporting plate 50 can drive the moving rod 72 and the extrusion plate 71 to move upwards in the bellows 70, and the gas distribution block 73 sucks the gas and transmits the gas into the bellows 70 through the hose 74.

In addition, the invention also provides an ultrasonic welding process of the flexible circuit board, which comprises the following steps: s1, product feeding: the operator places the flexible wiring board and the hard wiring board on the square support plate 81 and the soldering station 2, respectively.

S2, adjusting by the auxiliary positioner 6: the operator rotates the abutting bolt 63 so that the abutting bolt 63 does not abut against the first ring 61, then the operator adjusts the adjusting plate 65, the auxiliary spring rod 66, the auxiliary pressing plate 67 and the pressing rubber block 68 to a proper position through the first rotating shaft 60, the first ring 61 and the first telescopic rod 64, meanwhile, the second telescopic rod 69 is also adjusted accordingly, and finally the operator rotates the abutting bolt 63 again so that the abutting bolt 63 abuts against the first ring 61 again.

S3, height adjustment: the operator rotates the locking bolt 86 to prevent the locking ring 85 from abutting against the telescopic end of the adjusting spring rod 84, then the operator adjusts one of the adjusting spring rods 84, the rest of the adjusting spring rods 84 are also adjusted to the same position through the synchronous lath 83, the distance between the synchronous lath 83 and the square supporting plate 81 is adjusted to a proper position according to the thickness of the hard circuit board, and finally the operator reversely rotates the locking bolt 86 to abut against the locking ring 85 again against the telescopic end of the adjusting spring rod 84.

S4, clamping a hard circuit board: the operator rotates the abutting bolt 63 firstly so as not to abut against the outer wall of the first circular ring 61, adjusts the positions of the adjusting plate 65, the auxiliary spring rod 66, the auxiliary pressing plate 67 and the pressing rubber block 68 through the first telescopic rod 64, rotates the abutting bolt 63 again after the adjustment is completed so that the abutting bolt 63 abuts against the outer wall of the first circular ring 61 to fix the first circular ring 61, then starts the driving cylinder 40 on the welding table 2, the telescopic end of the driving cylinder 40 on the welding table 2 moves the square pressing plate 41 and the rubber base 43 downwards, meanwhile, the square pressing plate 41 drives the L-shaped supporting plate 50 and the pressing block 51 to move downwards together, after the pressing block 51 moves to a designated position, the square pressing block 54 presses the square pressing block 54, the square pressing plate 54 carries the connecting threaded rod 55, the adjusting block 56, the pressing plate 57 and the positioning rubber layer 58 to adjust the to-be-welded end of the hard circuit board to the corresponding position of the welding table 2, then the square pressing plate 41 and the rubber base 43 abut against the to-be-welded end of the hard circuit board, and in the process, the square pressing plate 41 moves downwards to fix the auxiliary pressing plate 67 and the pressing rubber block 68 downwards through the second telescopic rod 69.

S5, clamping a flexible circuit board: the flexible circuit board is clamped on the workbench 1 basically the same as the rigid circuit board on the welding table 2, except that the operator also adjusts the adjusting spring rod 84 and the abutting plate 4221 to proper positions according to the thickness of the flexible circuit board, then the square pressing plate 41 on the workbench 1 also moves down together with the circular piston 4202 and the connecting rod 4203 in the cylinder 4200 during the downward movement, so that the air in the cylinder 4200 is compressed, the square pressing plate 41 moves down while the adjusting spring rod 84 and the abutting plate 4221 also move down together with the moving block 4218, the second connecting rod 4217 and the first connecting rod 4216, the first connecting rod 4216 moves with the moving rack 4215 under the restriction of the control slide 4214, the moving rack 4215 rotates together with the driving gear 4211 and the rotating rod 4210, the rotating rod 4210 also rotates together with the magnet 4212, so that the magnet 4212 rotates to correspond to the air blocking block 4206, at this time the magnet 4212 attracts the air blocking block 4206, and the compressed air in the cylinder 4200 is compressed into the air bag 4209 through the hard tube 4 and the telescopic tube 4209.

S6, surface dedusting: the L-shaped supporting plate 50 also drives the moving rod 72 and the extruding plate 71 to move downwards in the bellows 70 in the clamping process of the flexible circuit board and the hard circuit board, the extruding plate 71 guides the air in the bellows 70 into the air dividing block 73 through the hose 74 in the process, and the guided air is uniformly blown to the surfaces of the flexible circuit board and the hard circuit board through the air dividing block 73, so that dust on the surfaces of the flexible circuit board and the hard circuit board is removed.

S7, welding: the operator controls the electric slide block 11 to move towards the welding table 2 with the workbench 1, after the flexible circuit board is contacted with the hard circuit board, the welding robot 92 is started, the welding robot 92 automatically welds, then the operator operates the driving cylinder 40 to move upwards, so that the hard circuit board and the flexible circuit board are not clamped any more, and then the operator takes down the welded flexible circuit board.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a flexible line way board ultrasonic welding equipment, includes welding slide rail (10), the last slip of welding slide rail (10) is provided with electronic slider (11) and workstation (1), and electronic slider (11) can dismantle with workstation (1) and be connected, one side that workstation (1) was kept away from to welding slide rail (10) is provided with welding bench (2), workstation (1) and welding bench (2) upper end all are provided with fixture (3), and fixture (3) that are located on workstation (1) are used for the centre gripping flexible line way board, and fixture (3) that are located on welding bench (2) are used for the rigid circuit board of centre gripping, its characterized in that:

The clamping mechanism (3) comprises a fixing plate (30), a supporting rod (31), a middle positioner (4), side Fang Xianwei, an auxiliary positioner (6) and a dust removing unit (7), wherein the fixing plate (30) is arranged above the workbench (1) or the welding table (2), the fixing plate (30) is fixed on the workbench (1) or the welding table (2) through the supporting rod (31), the middle positioner (4) is arranged at the lower end of the fixing plate (30), side limiters (5) are arranged on two sides below the fixing plate (30), the auxiliary positioner (6) are arranged on one side, far away from the welding slide rail (10), of the fixing plate (30), and the dust removing unit (7) is arranged on one side, deviating from the auxiliary positioner (6), of the fixing plate (30).

The middle positioner (4) comprises a driving air cylinder (40), a square pressing plate (41), a flexible clamping assembly (42) and a rubber base (43), wherein the fixed end of the driving air cylinder (40) is installed at the lower end of the fixed plate (30), the square pressing plate (41) is installed at the lower end of the driving air cylinder (40), the flexible clamping assembly (42) is arranged on the square pressing plate (41) which is positioned on the workbench (1), and a plurality of detachable rubber bases (43) are arranged on the square pressing plate (41) which is positioned on the welding table (2) at equal intervals;

The side Fang Xianwei comprises an L-shaped supporting plate (50), an extrusion block (51), a positioning sliding groove (52), a positioning sliding block (53), a square pushing block (54), a connecting threaded rod (55), an adjusting block (56), a pushing plate (57), a positioning rubber layer (58), an L-shaped connecting plate (59) and a reset tension spring (510), wherein the L-shaped supporting plate (50) is symmetrically and fixedly arranged at the upper part of the square pressing plate (41), the triangular extrusion block (51) is fixedly arranged at the bottom of the horizontal section of the L-shaped supporting plate (50), and the lower end surface of the extrusion block (51) is of an arc-shaped surface structure;

The automatic welding machine comprises a workbench (1) or a welding table (2), wherein a positioning sliding groove (52) is formed in the upper end of the workbench or the welding table (2) and corresponds to a pressing block (51), a positioning sliding block (53) is arranged in the positioning sliding groove (52) in a sliding mode, a square pushing block (54) is fixedly arranged on the upper side of the positioning sliding block (53), the square pushing block (54) is in abutting fit with an arc surface of the pressing block (51), a connecting threaded rod (55) is connected to one side of the square pushing block (54) towards a square pressing plate (41) in a threaded mode, an adjusting block (56) is fixedly sleeved on the connecting threaded rod (55), a push plate (57) is rotatably arranged at one end, far away from the square pushing block (54), of the connecting threaded rod (55), a positioning rubber layer (58) is arranged at one side, far away from the connecting threaded rod (55), of the square pushing block (54), of the L-shaped connecting plate (59) is provided with an L-shaped connecting plate (59), the side wall of the workbench (1) and the welding table (2), and a tension spring (510) is arranged between the L-shaped connecting plate (59) and the positioning sliding block (53).

The flexible clamping assembly (42) comprises an execution unit (420) and a control unit (421), the execution unit (420) comprises a cylinder barrel (4200), a gas filling and discharging hole (4201), a round piston (4202), a connecting rod (4203), a hard tube (4204), a wind shielding shell (4205), a wind shielding iron block (4206), a pull-back spring (4207), a telescopic tube (4208) and a compression air bag (4209), a cylinder barrel (4200) positioned above a square pressing plate (41) is fixedly arranged on the lower side of the fixed plate (30), the gas filling and discharging hole (4201) is formed in the outer wall of the upper end of the cylinder barrel (4200), a round piston (4202) is arranged in the cylinder barrel (4200) in a sliding mode through a sealing ring, a connecting rod (4203) is vertically arranged in the middle of the lower end of the round piston (4202), the connecting rod (4203) penetrates through the bottom of the cylinder barrel (4200) and then is connected with the square pressing plate (41), and the connecting rod (4203) is in sliding fit with the bottom of the cylinder barrel (4200) through a sealing ring;

The bottom of the cylinder barrel (4200) is communicated with a hard pipe (4204), a wind shielding shell (4205) with a hollow structure is arranged at the bottom of the hard pipe (4204), a wind shielding iron block (4206) is arranged in the wind shielding shell (4205) in a sliding mode, a pull-back spring (4207) is arranged between the wind shielding iron block (4206) and the inner side wall of the wind shielding shell (4205), a telescopic pipe (4208) is communicated with the lower end of the wind shielding shell (4205), a compression air bag (4209) is arranged at the lower end of the square pressing plate (41) on the workbench (1), and the lower end of the telescopic pipe (4208) penetrates through the square pressing plate (41) and then is communicated with the compression air bag (4209);

The control unit (421) comprises a rotating rod (4210), a driving gear (4211), a magnet (4212), square laths (4213), a control sliding rail (4214) and a movable rack (4215), wherein the rotating rod (4210) is rotatably arranged at the lower side of the fixed plate (30), the driving gear (4211) is fixedly arranged on the outer wall of one end, far away from the fixed plate (30), of the rotating rod (4210), the magnet (4212) is fixedly arranged on the outer wall of the rotating rod (4210) and corresponds to a wind shielding iron block (4206), the square laths (4213) are fixedly arranged at the lower side of the fixed plate (30), the control sliding rail (4214) is horizontally arranged at one side, far away from the fixed plate (30), of the control sliding rail (4214), the movable rack (4215) is slidably arranged at one side, close to the rotating rod (4210), of the control sliding rail (4214), and the movable rack (4215) is meshed with the driving gear (4211);

The control unit (421) further comprises a first connecting rod (4216), a second connecting rod (4217), a moving block (4218), an L-shaped limiting block (4219), an adjusting telescopic rod (4220), a collision plate (4221), a tightening ring (4222) and a tightening bolt (4223), the first connecting rod (4216) is rotatably connected to the lower side of the moving rack (4215), the lower end of the first connecting rod (4216) is rotatably provided with the second connecting rod (4217) through a pin shaft, the lower side of the second connecting rod (4217) is hinged with the moving block (4218), the upper side of the square pressing plate (41) is symmetrically provided with the L-shaped limiting block (4219), the inner wall of the L-shaped limiting block (4219) is in collision with the moving block (4218), the upper side of the square pressing plate (41) is horizontally provided with the adjusting telescopic rod (4220), one side of the telescopic end of the adjusting telescopic rod (4220) far away from the square pressing plate (41) is fixedly provided with the collision plate (4221), the lower end of the telescopic plate (4221) is located right above the moving block (4218), and the telescopic rod (4220) is fixedly provided with the tightening ring (4222) through the tightening ring (4222), and the tightening ring (4222) is fixedly connected with the tightening bolt (4223);

The auxiliary positioner (6) comprises a first rotating shaft (60), a first circular ring (61), a locking plate (62), a tightening bolt (63), a first telescopic rod (64), an adjusting plate (65), an auxiliary spring rod (66), an auxiliary pressing plate (67), a pressing rubber block (68) and a second telescopic rod (69), wherein the first rotating shaft (60) is symmetrically arranged on the upper portion of the fixed plate (30), the first circular ring (61) is rotatably sleeved on the first rotating shaft (60), the locking plate (62) is fixedly arranged on the upper portion of the first rotating shaft (60), and the tightening bolt (63) is arranged on the locking plate (62) in a penetrating mode through threads;

The telescopic device is characterized in that a telescopic rod I (64) is fixedly arranged on the outer wall of the circular ring I (61) in the horizontal direction, an adjusting plate (65) is fixedly arranged at the telescopic end, far away from the circular ring I (61), of the telescopic rod I (64), an auxiliary spring rod (66) is fixedly arranged in the vertical direction of the lower part of the adjusting plate (65), an auxiliary pressing plate (67) is fixedly arranged at one end, far away from the adjusting plate (65), of the telescopic end of the auxiliary spring rod (66), a compaction rubber block (68) is fixedly arranged at the lower side of the auxiliary pressing plate (67), and the square pressing plate (41) and the auxiliary pressing plate (67) are rotationally connected through a telescopic rod II (69);

The dust removal unit (7) comprises a bellows (70), an extrusion plate (71), a movable rod (72), an air dividing block (73) and a hose (74), wherein the bellows (70) located above the L-shaped supporting plate (50) are symmetrically arranged on the lower side of the fixed plate (30), the extrusion plate (71) is slidably arranged in the bellows (70) through a sealing ring, the movable rod (72) is fixedly arranged in the middle of the lower side of the extrusion plate (71), a round hole for the movable rod (72) to penetrate is formed in the bottom of the bellows (70), the round hole is in sliding fit with the movable rod (72) through a sealing ring, one end, far away from the extrusion plate (71), of the movable rod (72) is fixedly arranged on the upper side of the L-shaped supporting plate (50), the air dividing block (73) is fixedly arranged in the middle of one side, far away from the adjusting plate (65), of the fixed plate (30), and the bellows (70) and the air dividing block (73) are communicated through the hose (74).

2. The ultrasonic welding apparatus for flexible circuit board according to claim 1, wherein: the adjustable hydraulic lifting device is characterized in that an adjusting mechanism (8) is further arranged on the upper portion of the workbench (1), the adjusting mechanism (8) comprises an adjusting through groove (80), a square supporting plate (81), supporting springs (82), synchronous laths (83), adjusting spring rods (84), locking rings (85) and locking bolts (86), the adjusting through groove (80) is formed in the middle of the upper portion of the workbench (1), the square supporting plate (81) is arranged above the bottom of the adjusting through groove (80), a plurality of supporting springs (82) are symmetrically arranged between the square supporting plate (81) and the bottom of the adjusting through groove (80) at equal intervals, the synchronous laths (83) are arranged between the square supporting plate (81) and the bottom of the adjusting through groove (80) at equal intervals, the locking rings (85) are sleeved on the outer walls of the telescopic ends of the adjusting spring rods (84), the locking rings (85) are fixed on the top sides of the fixed ends of the adjusting spring rods (84), and the locking rings (85) are provided with locking bolts (86) through threaded connection.

3. The ultrasonic welding apparatus for flexible circuit board according to claim 1, wherein: one side along welding slide rail (10) width direction is provided with welding mechanism (9), welding mechanism (9) are including fixed station (90), welding seat (91) and welding robot (92), follow one side along welding slide rail (10) width direction just is close to one end of welding table (2) and is provided with fixed station (90), fixed station (90) top fixed mounting has welding seat (91), welding seat (91) top fixed mounting has welding robot (92).

4. An ultrasonic welding process for a flexible circuit board, comprising an ultrasonic welding apparatus for a flexible circuit board according to any one of claims 1 to 3, characterized in that the welding process comprises the steps of:

s1, product feeding: an operator respectively places a flexible circuit board and a hard circuit board on a square supporting plate (81) and a welding table (2);

S2, adjusting by an auxiliary positioner (6): in order to adapt to circuit boards with different sizes, the flexible circuit board and the hard circuit board are ensured to be kept fixed in the welding process, the rotation angle of the auxiliary pressing plate (67) is controlled through the abutting bolt (63), and meanwhile, the distance between the auxiliary pressing plate (67) and the fixed plate (30) is adjusted through the first telescopic rod (64);

S3, height adjustment: in order to ensure that flexible circuit boards with different thicknesses are always positioned on the upper side of the to-be-welded end of the hard circuit board when being welded, the flexible circuit board is prevented from colliding with the hard circuit board when moving, the flexible circuit board and the hard circuit board are damaged, and the distance between the synchronous plate and the square support plate (81) is controlled through the locking bolt (86);

S4, clamping a hard circuit board: in order to ensure that the welding end of the hard circuit board is positioned at an accurate position before welding and to prevent the hard circuit board from shifting during welding, the position of the end to be welded of the hard circuit board is controlled by a driving cylinder (40) and the hard circuit board is fixed on a welding table (2);

S5, clamping a flexible circuit board: in order to ensure that the welding end of the flexible circuit board is positioned at an accurate position before welding, and in order to prevent the flexible circuit board from shifting during welding and damage to the flexible circuit board during fixing, the position of the end to be welded of the flexible circuit board is controlled by a driving cylinder (40) and the flexible circuit board is fixed on a square supporting plate (81), and meanwhile, the inflation and deflation of a compression air bag (4209) are controlled by a circular piston (4202);

S6, surface dedusting: in order to avoid the phenomenon that the flexible circuit board and the hard circuit board are not firmly welded due to dust influence during welding, the air dividing block (73) is controlled to blow evenly through the extruding plate (71);

S7, welding: in order to realize automatic welding, a flexible circuit board and a hard circuit board are contacted through an electric sliding block (11), and automatic welding is realized through a welding robot (92).