CN114682898A - Electromagnetic pulse welding equipment for electronic packaging and welding method thereof - Google Patents
Electromagnetic pulse welding equipment for electronic packaging and welding method thereof Download PDFInfo
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- CN114682898A CN114682898A CN202210479039.0A CN202210479039A CN114682898A CN 114682898 A CN114682898 A CN 114682898A CN 202210479039 A CN202210479039 A CN 202210479039A CN 114682898 A CN114682898 A CN 114682898A
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- 238000003466 welding Methods 0.000 title claims abstract description 160
- 238000004100 electronic packaging Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 24
- 230000005389 magnetism Effects 0.000 claims description 14
- 230000010354 integration Effects 0.000 claims description 9
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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Abstract
The invention discloses electromagnetic pulse welding equipment for electronic packaging and a welding method thereof, wherein welding spots on the back of a PCB are welded at one time by an electromagnetic pulse welding device to replace hot melt welding in an electronic packaging welding technology, the PCB does not generate a large amount of heat in the electromagnetic pulse welding process, the PCB does not deform, the welding quality of the welding spots of the PCB is improved, in the actual welding process, the PCB only needs to be placed in a mounting groove for fixing, a conveying belt automatically conveys the PCB to a welding station and a taking station, the PCB at the welding station is automatically welded by the electromagnetic pulse welding device, and the PCB after welding is unloaded and transferred by the taking device at the taking station.
Description
Technical Field
The invention relates to the technical field of electromagnetic pulse welding, in particular to electromagnetic pulse welding equipment for electronic packaging and a welding method thereof.
Background
Electronic packaging refers to a housing for mounting a semiconductor integrated circuit chip, which not only plays a role in mounting, fixing, sealing, protecting the chip and enhancing the thermal conductivity, but also is a bridge for connecting the internal world of the chip with external circuits, i.e., the connection points on the chip are welded with the pins of the packaging housing, and the pins are connected with other devices through wires on a printed circuit board.
In the existing electronic packaging welding technology, because a plurality of welding parts are involved and a hot melting welding mode is mostly adopted, for example, a soldering tin connection mode is adopted, the hot melting welding easily accumulates a large amount of thermal stress in materials, a flat plate part in the electronic packaging easily generates thermal deformation, the welding effect of the hot melting welding is poor for welding dissimilar materials, and after cooling, the welding spots are caused to be insufficient and fall off, so that the performance of a device is degraded or loses efficacy; when electronic packaging is carried out in a hot-melt welding mode, soldering flux, soldering tin and the like are introduced, so that the surface of the chip is easy to be unclean, and an additional cleaning step is often required.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides electromagnetic pulse welding equipment for electronic packaging and a welding method thereof, and solves the problems of unstable connection of welding parts, easy thermal deformation of a flat plate and unclean chip surface caused by hot melt welding in the prior electronic packaging technology.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the electromagnetic pulse welding equipment for electronic packaging comprises an installation box, wherein a conveying belt for conveying a PCB is arranged in the installation box, and the top of the conveying belt is connected with the upper end face of the installation box;
the conveying belt is provided with a welding station and a taking station, the welding station is positioned at the front end of the taking station, an electromagnetic pulse welding device is arranged on the welding station, and the electromagnetic pulse welding device is fixedly connected with the top of the mounting box; the taking station is provided with a taking device used for transferring the welded PCB from the conveying belt, and the taking device is fixedly connected with the top of the mounting box;
the electromagnetic pulse welding device comprises an electromagnetic pulse welding assembly and a driving assembly for driving the electromagnetic pulse welding assembly to move linearly along the Z-axis direction and the X-axis direction, and the X-axis direction is the same as the length direction of the conveying belt; electromagnetic pulse welding subassembly includes the collection box, is provided with pulse power supply, coil, collection magnetism ware in the collection box, and collection magnetism ware below is provided with the shielding piece, and the shielding piece is located the collection magnetism ware outside, and the coil is located collection magnetism ware top and is connected with pulse power supply, and the shielding piece is located the shielding pipe that is provided with many and PCB board solder joint position matchs on the below of collection magnetism ware and the shield plate.
Further, be provided with a plurality of installation pieces on the conveyer belt, the top of every installation piece all is provided with a mounting groove, and the solder joint of PCB board is vertical upwards to place in the mounting groove in the opposite direction.
Furthermore, the driving assembly comprises a first mounting plate, the length direction of the first mounting plate is the same as that of the conveying belt, the bottom of the first mounting plate is fixedly connected with the upper end face of the mounting box, the first mounting plate is positioned on one side of the conveying belt, a first motor is arranged on one side of the back face of the first mounting plate, and a first sliding rail, a driving belt pulley and a driven belt pulley are horizontally arranged on the front face of the first mounting plate; a belt is arranged on the driving belt pulley and the driven belt pulley, and an output shaft of the first motor penetrates through the first mounting plate to be rotatably connected with the driving belt pulley;
a second mounting plate is arranged on the first mounting plate in a sliding mode, a first sliding block matched with the first sliding rail is arranged on the back face of the second mounting plate, a transmission block is arranged on the belt, and the transmission block is fixedly connected with the back face of the second mounting plate; the first motor drives the belt to enable the second mounting plate to horizontally and linearly move along the length direction of the first sliding rail;
the cross-section of second mounting panel is "L" font structure, and the vertical second slide rail that is provided with on the front of second mounting panel, the top of second mounting panel are provided with the second motor, and the transport epaxial rotation of second motor is provided with a lead screw, and threaded connection has a second slider that matches with the second slide rail on the lead screw, and the front fixedly connected with collection box of second slider.
Furthermore, a partition plate is arranged in the integration box, the partition plate divides the inner body of the integration box into an upper cavity and a lower cavity, the pulse power supply is arranged in the upper cavity, the coil and the magnetic collector are arranged in the lower cavity, a round notch is formed in the bottom of the lower cavity, and the magnetic collector is over against the round notch;
the lower end face of the integration box is provided with a fixing ring, the fixing ring is superposed with the circle center of the circular notch, and two clamping grooves are symmetrically formed in the circumferential side face of the fixing ring;
the shielding plate is in a round cake structure, only a plurality of through holes matched with the positions of the PCB welding spots are formed in the shielding plate, a plurality of shielding pipes are arranged on the lower end face of the shielding plate, and one shielding pipe is fixed in each through hole;
the both sides of shield plate up end all are provided with a card arm of being connected with the draw-in groove block.
Furthermore, the taking device comprises a third mounting plate in an L-shaped structure and a rotating rod in an L-shaped structure, the vertical end of the third mounting plate is fixedly connected with the top of the mounting box, a third motor is arranged at the horizontal top of the third mounting plate, and the axis of an output shaft of the third motor is vertical to the horizontal top of the third mounting plate;
the horizontal end of the rotating rod is fixedly connected with the output end of a third motor, the third motor is used for driving the vertical end of the rotating rod to rotate by taking the axis of the output shaft of the third motor as the center, and a vacuum chuck and an air pump connected with the vacuum chuck are fixedly arranged on the vertical end of the rotating rod; the vacuum chuck is used for sucking the PCB in the mounting groove.
Furthermore, the electromagnetic pulse welding equipment for electronic packaging also comprises a control module, wherein the control module comprises a controller and an image acquisition device electrically connected with the controller; the image acquisition device comprises a shell arranged on the lower end face of the integrated box, and an image processing unit, a camera and a communication module which are electrically connected with each other are arranged in the shell; the image processing is electrically connected with the controller through the communication module, and the camera is used for identifying the position of a welding spot on the PCB; the first motor and the second motor are both electrically connected with the controller.
Further, the first motor, the second motor and the third motor are all stepping motors.
Furthermore, a bottom plate is arranged at the bottom of the conveying belt, directional rollers with locking functions are arranged at four corners of the lower end face of the bottom plate, the directional rollers roll along the direction perpendicular to the length direction of the conveying belt, and a limiting plate is arranged on each of two sides of the bottom plate; the two side surfaces of the installation box are horizontally provided with limit grooves matched with the limit plates, the length direction of each limit groove is the same as the width direction of the installation box, and one side of each limit groove is provided with a length scale mark; the installation box is provided with a box door.
The scheme also provides a welding method of the electromagnetic pulse welding equipment for electronic packaging, which comprises the following steps:
s1, selecting a shielding piece matched with the PCB according to the position of the welding point of the PCB, and installing the shielding piece on the fixing ring;
s2, inversely fixing the PCB in the mounting groove, and removing impurities on the back of the PCB;
s3, when the conveyer belt conveys the PCB in the mounting groove to a welding station, the conveyer belt stops moving;
s4, the driving component drives the electromagnetic pulse welding component to move downwards to the vertical position until the lower end of the shielding tube covers the welding point of the PCB;
s5, starting a pulse power supply, wherein the coil generates a pulse magnetic field, and the pin generates current and generates repulsion with the magnetic collector;
s6, after the pulse power supply is electrified for a preset time, the pulse power supply is disconnected, and the pin is welded on the welding spot;
s7, the conveyor belt is started to convey the welded PCB to a taking station;
s8, starting an air pump, sucking the welded PCB from the mounting groove by a vacuum chuck, driving a rotating rod to rotate by 90 degrees by a third motor, stopping the air pump, dropping the welded PCB from the vacuum chuck, driving the rotating rod to rotate to the initial position by the third motor, and completing the transfer unloading of the PCB;
and S9, repeating the steps S1-S8, and completing the welding work of the plurality of PCB boards.
The invention has the beneficial effects that: 1. according to the electromagnetic pulse welding equipment for electronic packaging, the welding spots on the back face of the PCB are welded at one time through the electromagnetic pulse welding device, hot melt welding in an electronic packaging welding technology is replaced, the PCB cannot generate a large amount of heat in the electromagnetic pulse welding process, the PCB cannot deform, and the welding quality of the welding spots of the PCB is improved.
2. An electromagnetic pulse welding equipment for electronic packaging in this scheme, at the actual welding machine in-process, only need to place the PCB board and fix in the mounting groove, the conveyer belt is automatic carries the PCB board to welding station and the station of taking, the PCB board at welding station carries out weldment work to the PCB board by electromagnetic pulse welding set is automatic, and the PCB board at the station of taking is unloaded the transfer work to accomplishing welded PCB board by the device of taking, whole welding process is swift convenient, the manpower is practiced thrift, weldment work efficiency is high.
Drawings
Fig. 1 is a schematic front view of an electromagnetic pulse welding apparatus for electronic packaging.
Fig. 2 is a schematic side view of an electromagnetic pulse welding apparatus for electronic packaging.
Fig. 3 is a side view of the pick-up device.
FIG. 4 is an enlarged schematic view of an electromagnetic pulse welding assembly.
Fig. 5 is a schematic view of the structure in which the shield is attached to the integration box.
Fig. 6 is a schematic view of an enlarged structure in a top view of the mounting block.
Wherein, 1, installing a box; 2. a conveyor belt; 3. an electromagnetic pulse welding device; 4. a taking device; 401. a third mounting plate; 402. rotating the rod; 403. a third motor; 404. a vacuum chuck; 405. an air pump; 5. welding the assembly by electromagnetic pulse; 501. an integration box; 502. a pulse power supply; 503. a coil; 504. a magnetic collector; 6. a drive assembly; 601. a first mounting plate; 602. a first motor; 603. a first slide rail; 604. a drive pulley; 605. a driven pulley; 606. a second mounting plate; 607. a first slider; 608. a transmission block; 609. a second slide rail; 610. a second motor; 611. a screw rod; 612. a second slider; 7. a shield; 8. a shielding tube; 9. mounting blocks; 10. mounting grooves; 11. a partition plate; 12. a fixing ring; 13. a card slot; 14. a clamp arm; 15. a control module; 16. an image acquisition device; 17. a base plate; 18. a directional roller; 19. a limiting plate; 20. a limiting groove.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 to 6, the present invention provides an electromagnetic pulse welding apparatus for electronic packaging, which includes an installation box 1, wherein a conveyor belt 2 for conveying a PCB is disposed in the installation box 1, and the top of the conveyor belt 2 is connected to the upper end surface of the installation box 1; the conveying belt 2 is provided with a welding station and a taking station, the welding station is positioned at the front end of the taking station, the welding station is provided with an electromagnetic pulse welding device 3, and the electromagnetic pulse welding device 3 is fixedly connected with the top of the installation box 1; the taking station is provided with a taking device 4 used for transferring the welded PCB from the conveyer belt 2, and the taking device 4 is fixedly connected with the top of the installation box 1;
the electromagnetic pulse welding device 3 comprises an electromagnetic pulse welding assembly 5 and a driving assembly 6 for driving the electromagnetic pulse welding assembly 5 to move linearly along the Z-axis direction and the X-axis direction, and the X-axis direction is the same as the length direction of the conveying belt 2; electromagnetic pulse welding subassembly 5 includes collection box 501, is provided with pulse power supply 502, coil 503, magnetism collection ware 504 in the collection box 501, and magnetism collection ware 504 below is provided with shielding piece 7, and shielding piece 7 is located the collection box 501 outside, and coil 503 is located magnetism collection ware 504 top and is connected with pulse power supply 502, and shielding piece 7 is located magnetism collection ware 504 below and is provided with many shielding pipes 8 that match with PCB board solder joint position on the shield plate. The principle of electromagnetic pulse welding is as follows: the shielding piece 7 and the shielding tube 8 are made of non-metallic materials, the welding spot of the PCB is required to be connected with a pin of an electronic component, usually metal, the shielding tube 8 covers around the welding spot, the pulse power supply 502 is started, the coil 503 generates a pulse magnetic field, the shielding piece 7 and the shielding tube 8 are made of non-metallic materials, and cannot conduct electricity to generate a magnetic force capable of moving, the shielding tube 8 is hollow and is a non-shielding channel, and under the action of electromagnetic pulse, the pin generates current, so that repulsive force between the pin and the magnetic collector 504 is generated, the pin is welded on the welding spot, and the welding work of the welding spot is completed.
Be provided with a plurality of installation pieces 9 on the conveyer belt 2, the top of every installation piece 9 all is provided with a mounting groove 10, and the vertical upwards reverse placing of solder joint of PCB board is in mounting groove 10, is convenient for fix the PCB board and is convenient for weld the solder joint on the PCB board.
As a specific arrangement mode of the driving assembly 6, the driving assembly 6 includes a first mounting plate 601, a length direction of the first mounting plate 601 is the same as a length direction of the conveying belt 2, a bottom of the first mounting plate 601 is fixedly connected with an upper end face of the mounting box 1, the first mounting plate 601 is located on one side of the conveying belt 2, a first motor 602 is arranged on one side of a back face of the first mounting plate 601, and a first slide rail 603, a driving pulley 604 and a driven pulley 605 are horizontally arranged on a front face of the first mounting plate 601; the driving pulley 604 and the driven pulley 605 are provided with belts, and an output shaft of the first motor 602 penetrates through the first mounting plate 601 to be rotatably connected with the driving pulley 604.
A second mounting plate 606 is arranged on the first mounting plate 601 in a sliding manner, a first sliding block 607 matched with the first sliding rail 603 is arranged on the back of the second mounting plate 606, a transmission block 608 is arranged on the belt, and the transmission block 608 is fixedly connected with the back of the second mounting plate; the first motor 602 drives the belt to make the second mounting plate 606 move horizontally and linearly along the length direction of the first slide rail 603.
The section of the second mounting plate 606 is of an L-shaped structure, a second sliding rail 609 is vertically arranged on the front surface of the second mounting plate 606, a second motor 610 is arranged at the top of the second mounting plate 606, a conveying shaft of the second motor 610 is rotatably provided with a screw rod 611, a second sliding block 612 matched with the second sliding rail 609 is connected to the screw rod 611 in a threaded mode, and the front surface of the second sliding block 612 is fixedly connected with the integration box 501.
The operating principle of the driving assembly 6 is as follows: the driving assembly 6 is used for driving the electromagnetic pulse welding assembly 5 to linearly move along the Z-axis direction and the X-axis direction, so that the position of the electromagnetic pulse welding assembly 5 is changed, and the electromagnetic pulse welding assembly 5 can complete welding work. When the electromagnetic pulse welding component 5 is driven to move linearly along the Z-axis direction, the second motor 610 rotates to drive the lead screw 611 to rotate, the rotating lead screw 611 drives the sliding block to move linearly along the length direction of the second sliding rail 609, and therefore the position of the integrated box 501 on the sliding block is adjusted in the vertical direction, and the shielding pipes 8 cover or are separated from welding points on the back plate of the PCB; when the electromagnetic pulse welding component 5 is driven to linearly move along the X-axis direction, the first motor 602 drives the driving belt pulley 604 to rotate, the driving belt pulley 604 drives the belt to linearly move back and forth along the X-axis direction through the driven belt pulley 605, the driving block 608 fixedly connected with the second mounting plate 606 is arranged on the belt, and then the second mounting plate 606 horizontally linearly moves along the length direction of the first sliding rail 603, the electromagnetic pulse welding component 5 is installed on the second mounting plate 606, the electromagnetic pulse welding component 5 horizontally linearly moves along the length direction of the first sliding rail 603 along with the second mounting plate 606, the electromagnetic pulse welding component 5 is driven to linearly move along the X-axis direction, a plurality of shielding pipes 8 are conveniently aligned to welding spots on a PCB back plate in the X-axis direction, the whole is formed by one-time welding without multiple times of welding, and welding steps are reduced.
As a specific setting mode of the integrated box 501, a partition plate 11 is arranged in the integrated box 501, the partition plate 11 divides the inner body of the integrated box 501 into an upper cavity and a lower cavity, a pulse power supply 502 is arranged in the upper cavity, a coil 503 and a magnetic collector 504 are arranged in the lower cavity, a circular notch is formed in the bottom of the lower cavity, and the magnetic collector 504 is opposite to the circular notch;
a fixing ring 12 is arranged on the lower end face of the integration box 501, the fixing ring 12 is overlapped with the circle center of the circular notch, and two clamping grooves 13 are symmetrically formed in the circumferential side face of the fixing ring 12; the shielding plate is of a round cake structure, only a plurality of through holes matched with the positions of the PCB welding spots are formed in the shielding plate, a plurality of shielding tubes 8 are arranged on the lower end face of the shielding plate, and one shielding tube 8 is fixed in each through hole; two sides of the upper end surface of the shielding plate are respectively provided with a clamping arm 14 which is clamped and connected with the clamping groove 13; the cooperation of card arm 14 and draw-in groove 13 realizes that the shield plate is installed on the lower terminal surface of collection box 501, has restricted the rotational degree of freedom of shield plate simultaneously, has avoided when installing the shield plate, and the condition that the solder joint on the PCB board backplate can't be aimed at to the shielding pipe 8 of shield plate below appearing because of the shield plate is rotatory.
As a specific arrangement mode of the taking device 4, the taking device 4 comprises a third mounting plate 401 in an "L" shape structure and a rotating rod 402 in an "L" shape structure, the vertical end of the third mounting plate 401 is fixedly connected with the top of the mounting box 1, the horizontal top of the third mounting plate 401 is provided with a third motor 403, and the axis of the output shaft of the third motor 403 is perpendicular to the horizontal top of the third mounting plate 401; the horizontal end of the rotating rod 402 is fixedly connected with the output end of a third motor 403, the third motor 403 is used for driving the vertical end of the rotating rod 402 to rotate by taking the axis of the output shaft of the third motor 403 as the center, and a vacuum chuck 404 and an air pump 405 connected with the vacuum chuck 404 are fixedly arranged on the vertical end of the rotating rod 402; the vacuum chuck 404 is used for sucking the PCB in the mounting groove 10, automatically unloading and transferring the welded PCB, saving manpower and having high efficiency of flow welding work.
The electromagnetic pulse welding equipment for electronic packaging further comprises a control module 15, wherein the control module 15 comprises a controller and an image acquisition device 16 electrically connected with the controller; the image acquisition device 16 comprises a shell arranged on the lower end face of the integrated box 501, and an image processing unit, a camera and a communication module which are electrically connected with each other are arranged in the shell; the image processing module is electrically connected with the controller through the communication module, the camera is used for identifying the position of a welding spot on the PCB, the controller is convenient to control the first motor 602 and the second motor 610 to rotate according to the image information of the position of the welding spot on the PCB, and the electromagnetic pulse welding component 5 can linearly move along the Z-axis direction and the X-axis direction, so that the purpose that the shielding pipes 8 are aligned with the welding spot on the PCB is achieved; the first motor 602 and the second motor 610 are electrically connected to the controller. The first motor 602, the second motor 610 and the third motor 403 are all stepping motors, and the angular displacement of the stepping motors is strictly proportional to the number of input pulses and is synchronized with the pulses in time. Therefore, the required rotation angle, speed and direction can be obtained by only controlling the number and frequency of the pulses and the phase sequence of the motor winding, so that the position of the electromagnetic pulse welding assembly 5 can be accurately adjusted.
A bottom plate 17 is arranged at the bottom of the conveying belt 2, the four corners of the lower end face of the bottom plate 17 are respectively provided with a directional roller 18 with a locking function, the directional rollers 18 roll along the direction vertical to the length direction of the conveying belt 2, and two sides of the bottom plate 17 are respectively provided with a limiting plate 19; two side surfaces of the installation box 1 are horizontally provided with limit grooves 20 matched with the limit plates 19, the length direction of the limit grooves 20 is the same as the width direction of the installation box 1, and one side of each limit groove 20 is provided with a length scale mark; the installation box 1 is provided with a box door. The PCB on the conveyor belt 2 may have a small deviation on the Y-axis, and if a Y-axis driving function is added to the driving assembly 6, the driving assembly 6 is bulky and the design and manufacturing cost is high, so that the positioning of the conveyor belt 2 in the Y-axis direction is realized by the positioning of the directional roller 18, and the design cost is reduced.
The scheme also provides a welding method of the electromagnetic pulse welding equipment for electronic packaging, which comprises the following steps:
s1, selecting the shielding piece 7 matched with the PCB according to the welding point position of the PCB, and installing the shielding piece 7 on the fixed ring 12;
s2, inversely fixing the PCB in the mounting groove 10, and removing impurities on the back of the PCB;
s3, when the conveyer belt 2 conveys the PCB in the mounting groove 10 to the welding station, the conveyer belt 2 stops moving;
s4, the driving component 6 drives the electromagnetic pulse welding component 5 to move downwards to the vertical position until the lower end of the shielding tube 8 covers the welding point position of the PCB;
s5, starting the pulse power supply 502, generating a pulse magnetic field by the coil 503, generating current by the pin and generating repulsion with the magnetic collector 504;
s6, after the pulse power supply 502 is electrified for a preset time, the pulse power supply 502 is disconnected, and the pin is welded at the welding spot;
s7, the conveyor belt 2 is started to convey the welded PCB to a taking station;
s8, starting an air pump 405, sucking the welded PCB from the mounting groove 10 by the vacuum chuck 404, driving a rotating rod 402 to rotate by 90 degrees by a third motor 403, stopping the air pump 405, falling the welded PCB from the vacuum chuck 404, driving the rotating rod 402 to rotate to the initial position by the third motor 403, and completing the transfer and discharge of the PCB;
and S9, repeating the steps S1-S8, and completing the welding work of the plurality of PCB boards.
To sum up, an electromagnetic pulse welding equipment for electronic packaging in this scheme, once only weld the solder joint at the PCB board back through electromagnetic pulse welding set 3, replace the hot melt welding among the electronic packaging welding technique, and the PCB board can not produce a large amount of heat in the electromagnetic pulse welding process, the PCB board can not produce the deformation, the welding quality of PCB board solder joint has been improved, in the actual welding machine process, only need place the PCB board and fix in mounting groove 10, conveyer belt 2 is automatic carries the PCB board to welding station and station of taking, the PCB board at welding station is carried out weldment work by electromagnetic pulse welding set 3 automatically to the PCB board, and the PCB board at the station of taking is unloaded the transfer work by taking device 4 to the PCB board after accomplishing the welding, whole welding process is swift convenient, and the manpower is saved, and weldment work efficiency is high.
Claims (9)
1. The electromagnetic pulse welding equipment for electronic packaging is characterized by comprising an installation box, wherein a conveying belt for conveying a PCB is arranged in the installation box, and the top of the conveying belt is connected with the upper end face of the installation box;
the conveying belt is provided with a welding station and a taking station, the welding station is positioned at the front end of the taking station, an electromagnetic pulse welding device is arranged on the welding station, and the electromagnetic pulse welding device is fixedly connected with the top of the mounting box; the taking station is provided with a taking device used for transferring the welded PCB from the conveying belt, and the taking device is fixedly connected with the top of the mounting box;
the electromagnetic pulse welding device comprises an electromagnetic pulse welding assembly and a driving assembly for driving the electromagnetic pulse welding assembly to move linearly along the Z-axis direction and the X-axis direction, and the X-axis direction is the same as the length direction of the conveying belt; electromagnetic pulse welding subassembly includes the collection box, be provided with pulse power supply, coil, collection magnetism ware in the collection box, collection magnetism ware below is provided with the shielding piece, and the shielding piece is located the collection magnetism ware outside, and the coil is located collection magnetism ware top and is connected with pulse power supply, the shielding piece is located the shielding pipe that is provided with many and PCB board solder joint position matches on the below of collection magnetism ware and the shield plate.
2. An electromagnetic pulse welding device for electronic packaging according to claim 1, wherein a plurality of mounting blocks are arranged on the conveyor belt, a mounting groove is arranged on the top of each mounting block, and the welding spots of the PCB are reversely placed in the mounting grooves vertically upwards.
3. The electromagnetic pulse welding equipment for electronic packaging according to claim 2, wherein the driving assembly comprises a first mounting plate, the length direction of the first mounting plate is the same as the length direction of the conveying belt, the bottom of the first mounting plate is fixedly connected with the upper end face of the mounting box, the first mounting plate is located on one side of the conveying belt, a first motor is arranged on one side of the back face of the first mounting plate, and a first sliding rail, a driving pulley and a driven pulley are horizontally arranged on the front face of the first mounting plate; the driving belt pulley and the driven belt pulley are provided with belts, and an output shaft of the first motor penetrates through the first mounting plate to be rotatably connected with the driving belt pulley;
a second mounting plate is arranged on the first mounting plate in a sliding mode, a first sliding block matched with the first sliding rail is arranged on the back face of the second mounting plate, a transmission block is arranged on the belt, and the transmission block is fixedly connected with the back face of the second mounting plate; the first motor drives the belt to enable the second mounting plate to horizontally and linearly move along the length direction of the first sliding rail;
the cross-section of second mounting panel is "L" font structure, and the vertical second slide rail that is provided with on the front of second mounting panel, the top of second mounting panel are provided with the second motor, the transport epaxial rotation of second motor is provided with a lead screw, threaded connection has one on the lead screw with the second slider that the second slide rail matches, the front fixedly connected with of second slider the collection box.
4. The electromagnetic pulse welding equipment for electronic packaging according to claim 3, wherein a partition is arranged in the integration box, the partition divides the inner body of the integration box into an upper cavity and a lower cavity, the pulse power supply is arranged in the upper cavity, the coil and the magnetic collector are arranged in the lower cavity, a circular notch is formed in the bottom of the lower cavity, and the magnetic collector faces the circular notch;
the lower end face of the integrated box is provided with a fixing ring, the fixing ring is superposed with the circle center of the circular notch, and two clamping grooves are symmetrically formed in the circumferential side face of the fixing ring;
the shielding plate is of a round cake structure, only a plurality of through holes matched with the positions of the PCB welding spots are formed in the shielding plate, a plurality of shielding pipes are arranged on the lower end face of the shielding plate, and one shielding pipe is fixed in each through hole;
and the two sides of the upper end surface of the shielding plate are respectively provided with a clamping arm which is connected with the clamping groove in a clamping manner.
5. The electromagnetic pulse welding equipment for electronic packaging according to claim 4, wherein the taking device comprises a third mounting plate in an L-shaped structure and a rotating rod in an L-shaped structure, the vertical end of the third mounting plate is fixedly connected with the top of the mounting box, a third motor is arranged at the horizontal top of the third mounting plate, and the axis of the output shaft of the third motor is perpendicular to the horizontal top of the third mounting plate;
the horizontal end of the rotating rod is fixedly connected with the output end of a third motor, the third motor is used for driving the vertical end of the rotating rod to rotate by taking the axis of the output shaft of the third motor as the center, and a vacuum chuck and an air pump connected with the vacuum chuck are fixedly arranged on the vertical end of the rotating rod; the vacuum chuck is used for sucking the PCB in the mounting groove.
6. The electromagnetic pulse welding apparatus for electronic packaging according to claim 5, further comprising a control module, wherein the control module comprises a controller and an image capture device electrically connected to the controller; the image acquisition device comprises a shell arranged on the lower end face of the integrated box, and an image processing unit, a camera and a communication module which are electrically connected with each other are arranged in the shell; the image processing is electrically connected with the controller through the communication module, and the camera is used for identifying the position of a welding spot on the PCB; the first motor and the second motor are both electrically connected with the controller.
7. The electromagnetic pulse welding apparatus for electronic packaging of claim 6, wherein the first motor, the second motor, and the third motor are all stepper motors.
8. The electromagnetic pulse welding equipment for electronic packaging according to claim 1, wherein a bottom plate is arranged at the bottom of the conveyor belt, a directional roller with a locking function is arranged at each of four corners of the lower end surface of the bottom plate, the directional rollers roll along a direction perpendicular to the length direction of the conveyor belt, and a limiting plate is arranged on each of two sides of the bottom plate; the two side surfaces of the installation box are horizontally provided with limiting grooves matched with the limiting plates, the length direction of each limiting groove is the same as the width direction of the installation box, and one side of each limiting groove is provided with a length scale mark; the installation box is provided with a box door.
9. A welding method of an electromagnetic pulse welding apparatus for electronic packaging according to any one of claims 1 to 8, characterized by comprising the steps of:
s1, selecting a shielding piece matched with the PCB according to the position of the welding point of the PCB, and installing the shielding piece on the fixing ring;
s2, inversely fixing the PCB in the mounting groove, and removing impurities on the back of the PCB;
s3, when the conveyer belt conveys the PCB in the mounting groove to a welding station, the conveyer belt stops moving;
s4, the driving assembly drives the electromagnetic pulse welding assembly to move downwards to the vertical position until the lower end of the shielding pipe covers the welding point of the PCB;
s5, starting a pulse power supply, wherein the coil generates a pulse magnetic field, and the pin generates current and generates repulsion with the magnetic collector;
s6, after the pulse power supply is electrified for a preset time, the pulse power supply is disconnected, and the pin is welded on the welding spot;
s7, the conveyor belt is started to convey the welded PCB to a taking station;
s8, starting an air pump, sucking the welded PCB from the mounting groove by a vacuum chuck, driving a rotating rod to rotate by 90 degrees by a third motor, stopping the air pump, dropping the welded PCB from the vacuum chuck, driving the rotating rod to rotate to the initial position by the third motor, and completing the transfer unloading of the PCB;
and S9, repeating the steps S1-S8, and completing the welding work of the plurality of PCB boards.
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| CN202210479039.0A CN114682898A (en) | 2022-05-05 | 2022-05-05 | Electromagnetic pulse welding equipment for electronic packaging and welding method thereof |
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| CN202210479039.0A CN114682898A (en) | 2022-05-05 | 2022-05-05 | Electromagnetic pulse welding equipment for electronic packaging and welding method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985865A (en) * | 2022-08-04 | 2022-09-02 | 尚泰传感科技(南通)有限公司 | Automatic pin welding equipment for electronic element |
| CN115740723A (en) * | 2022-11-29 | 2023-03-07 | 重庆大学 | Electromagnetic pulse welding equipment for forming micro gullies and machining method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090278870A1 (en) * | 2008-05-12 | 2009-11-12 | Spatial Photonics, Inc. | Method of Displaying Pixels Using Fractional Pulse Width Modulation |
| CN103128393A (en) * | 2011-11-25 | 2013-06-05 | 西安中科麦特电子技术设备有限公司 | Automatic welding machine |
| CN103252553A (en) * | 2013-05-30 | 2013-08-21 | 江苏泰昌电子有限公司 | Automatic tin-soldering machine |
| CN106581962A (en) * | 2016-12-23 | 2017-04-26 | 张家港久益机械有限公司 | Automatic blanking device of leather gluing edging machine |
| CN107350586A (en) * | 2017-08-01 | 2017-11-17 | 东莞市大研自动化设备有限公司 | A kind of VCM motor shell fragment laser scolding tin kludge and its tin-soldering method |
| CN109807426A (en) * | 2019-02-27 | 2019-05-28 | 重庆科技学院 | It is exclusively used in the electromagnetic pulse welding system of pcb board welding |
| CN110883470A (en) * | 2019-12-13 | 2020-03-17 | 陈英 | Automatic change welding machines hand with accurate location carriage |
| CN210794953U (en) * | 2019-09-25 | 2020-06-19 | 江苏吉福新材料股份有限公司 | Blanking device for producing matte UV decorative plate |
| CN112171122A (en) * | 2020-10-12 | 2021-01-05 | 滁州市精美家电设备股份有限公司 | Automatic welding device for U-shaped coamings of refrigerator shell |
| CN216326038U (en) * | 2021-11-20 | 2022-04-19 | 柳州市辉顺机械有限公司 | Automatic welding device for machining right doorsill reinforcing plate welding piece |
-
2022
- 2022-05-05 CN CN202210479039.0A patent/CN114682898A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090278870A1 (en) * | 2008-05-12 | 2009-11-12 | Spatial Photonics, Inc. | Method of Displaying Pixels Using Fractional Pulse Width Modulation |
| CN103128393A (en) * | 2011-11-25 | 2013-06-05 | 西安中科麦特电子技术设备有限公司 | Automatic welding machine |
| CN103252553A (en) * | 2013-05-30 | 2013-08-21 | 江苏泰昌电子有限公司 | Automatic tin-soldering machine |
| CN106581962A (en) * | 2016-12-23 | 2017-04-26 | 张家港久益机械有限公司 | Automatic blanking device of leather gluing edging machine |
| CN107350586A (en) * | 2017-08-01 | 2017-11-17 | 东莞市大研自动化设备有限公司 | A kind of VCM motor shell fragment laser scolding tin kludge and its tin-soldering method |
| CN109807426A (en) * | 2019-02-27 | 2019-05-28 | 重庆科技学院 | It is exclusively used in the electromagnetic pulse welding system of pcb board welding |
| CN210794953U (en) * | 2019-09-25 | 2020-06-19 | 江苏吉福新材料股份有限公司 | Blanking device for producing matte UV decorative plate |
| CN110883470A (en) * | 2019-12-13 | 2020-03-17 | 陈英 | Automatic change welding machines hand with accurate location carriage |
| CN112171122A (en) * | 2020-10-12 | 2021-01-05 | 滁州市精美家电设备股份有限公司 | Automatic welding device for U-shaped coamings of refrigerator shell |
| CN216326038U (en) * | 2021-11-20 | 2022-04-19 | 柳州市辉顺机械有限公司 | Automatic welding device for machining right doorsill reinforcing plate welding piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985865A (en) * | 2022-08-04 | 2022-09-02 | 尚泰传感科技(南通)有限公司 | Automatic pin welding equipment for electronic element |
| CN115740723A (en) * | 2022-11-29 | 2023-03-07 | 重庆大学 | Electromagnetic pulse welding equipment for forming micro gullies and machining method thereof |
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