CN113857856A - Device and method for forming and welding metal plate - Google Patents
Device and method for forming and welding metal plate Download PDFInfo
- Publication number
- CN113857856A CN113857856A CN202111246903.4A CN202111246903A CN113857856A CN 113857856 A CN113857856 A CN 113857856A CN 202111246903 A CN202111246903 A CN 202111246903A CN 113857856 A CN113857856 A CN 113857856A
- Authority
- CN
- China
- Prior art keywords
- plate
- forming
- metal foil
- cushion block
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 70
- 239000002184 metal Substances 0.000 title claims abstract description 70
- 238000003466 welding Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011888 foil Substances 0.000 claims abstract description 74
- 238000003825 pressing Methods 0.000 claims abstract description 56
- 238000000465 moulding Methods 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 42
- 229910052802 copper Inorganic materials 0.000 claims description 42
- 239000010949 copper Substances 0.000 claims description 42
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000004146 energy storage Methods 0.000 claims description 16
- 239000007769 metal material Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 229920006267 polyester film Polymers 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000001052 transient effect Effects 0.000 claims 1
- 238000010924 continuous production Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 238000004880 explosion Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000002309 gasification Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
- B21D26/023—Deforming sheet bodies including an additional treatment performed by fluid pressure, e.g. perforating
-
- 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
- B23K20/08—Explosive welding
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Optics & Photonics (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to a metal plate forming and welding device and a method thereof, and the device comprises an insulating base, a lower cushion block arranged on the insulating base, and an upper pressing block arranged above the lower cushion block, wherein a target plate, a flying plate, a metal foil and a plate to be formed are sequentially arranged between the upper pressing block and the lower cushion block from top to bottom; and a molding cavity matched with the shape of the local bulge is formed in the top surface of the lower cushion block. The invention has reasonable design, can form the plate while welding, and the formed plate can be used as a target plate for next welding, has good forming and welding effects, does not need a base plate between the target plate and the fly plate, can reduce the assembling and positioning time, improves the efficiency and realizes continuous production.
Description
The technical field is as follows:
the invention belongs to the field of high-energy-rate forming of metal material plastic processing, and particularly relates to a device and a method for forming and welding a metal plate.
Background art:
high energy rate forming refers to a forming method in which a metal is deformed by releasing a large amount of energy in a short time. Research shows that under the condition of high strain rate, the forming performance of the material is higher than that under the condition of traditional forming processing, so that the limit forming capability of the material is obviously improved, and the phenomenon is called high plasticity. The high-energy-rate forming of the material belongs to a dynamic process, and is not a quasi-static process of a traditional processing method, in the dynamic process, the material can generate dynamic behaviors such as tissue phase change, crystal twinning, adiabatic shearing and the like, and the forming difficulty and deformation resilience of the material difficult to deform can be effectively reduced.
The high-energy-rate forming comprises various modes such as explosion forming, electro-hydraulic forming, electromagnetic forming and the like, wherein the welding technology of the high-energy-rate forming comprises explosion welding, magnetic pulse welding, laser shock welding and foil gasification welding. However, for the connection method of dissimilar metals, explosive welding is very powerful and requires work in the field, it is difficult to achieve welding of thin plates or small areas, and the use of explosives is limited by many factors. Magnetic pulse welding is suitable for materials with good conductivity, materials with low conductivity need to be indirectly pushed by an aluminum or copper driver, so that the material cost is increased, and the process time is increased by the separation step of the driver and a workpiece after welding. In addition, reliable electromagnetic drives for high temperature, high pressure conditions do not exist or have a limited useful life. Laser shock welding is a new process technology, has many defects, and needs to continuously invest a great deal of manpower and time to complete research.
The foil gasification welding is also called as electric explosion forming, namely pulse current is applied to the metal foil to rapidly heat and vaporize the metal foil, and a large amount of expanded gas is generated in a short time to cause strong mechanical impact, so that a driving force of several GPa can be generated. However, in general electric explosion forming, a backing plate needs to be added between the fly plate and the target plate, and repeated disassembly and positioning are needed in each connection, which is cumbersome and not beneficial to continuous production.
The invention content is as follows:
the invention aims at solving the problems in the prior art, namely, the invention aims to provide a device and a method for forming and welding a metal plate, which not only have reasonable design, but also are convenient for continuous production.
In order to achieve the purpose, the invention adopts the technical scheme that: a metal plate forming and welding device comprises an insulating base, a lower cushion block arranged on the insulating base, and an upper pressing block arranged above the lower cushion block, wherein a target plate, a flying plate, a metal foil and a plate to be formed are sequentially arranged between the upper pressing block and the lower cushion block from top to bottom; and a molding cavity matched with the shape of the local bulge is formed in the top surface of the lower cushion block.
Furthermore, a connecting arm is arranged above the insulating base, one end of the connecting arm is connected with a vertical adjusting assembly, and the other end of the connecting arm is fixedly connected with the upper pressing block.
Furthermore, a supporting cushion block is arranged on the insulating base, the vertical adjusting assembly comprises a vertical screw rod and a pair of vertical guide rods which are arranged on two sides of the vertical screw rod in parallel, the lower ends of the vertical screw rod and the vertical guide rods are both arranged on the supporting cushion block, the vertical screw rod and the vertical guide rods are both vertically and slidably penetrated through the connecting arm, and height adjusting nuts which are in threaded connection with the vertical screw rod are arranged on the upper side and the lower side of the connecting arm; and the top surface of the supporting cushion block is provided with a locking nut which is in threaded connection with the vertical screw rod.
Furthermore, the insulating base is provided with a first mounting groove for accommodating the supporting cushion block, a second mounting groove for accommodating the lower cushion block is arranged beside the first mounting groove, and the second mounting groove is communicated along the front-back direction.
Furthermore, a pair of conductive copper bars is arranged on the left side and the right side of the lower cushion block, the rear ends of the pair of conductive copper bars are respectively connected with the left end and the right end of the metal foil, and the front ends of the pair of conductive copper bars are respectively connected with a positive wiring terminal and a negative wiring terminal of the power supply device.
Further, a foil pressing block for pressing a metal foil on the top surface of the conductive copper bar is arranged above the rear end of the conductive copper bar, and the foil pressing block is connected with the conductive copper bar through a first fixing screw; and a wire pressing block is arranged above the front end of the conductive copper bar and used for pressing the wiring terminal on the top surface of the conductive copper bar, and the wire pressing block is connected with the transmission copper bar through a second fixing screw.
Furthermore, the metal foil is in a dumbbell-like shape with a narrow middle part and wide two ends.
Further, the outer sides of the lower cushion block and the metal foil are wrapped with PET polyester films.
Furthermore, the power supply device comprises a step-up transformer, a rectifier, a current-limiting resistor, an energy storage capacitor and a high-voltage switch, wherein a primary coil of the step-up transformer is externally connected with 380V alternating current, a secondary coil of the step-up transformer is connected with the rectifier and the current-limiting resistor in series and is electrically connected with a pair of conducting copper strips through a positive terminal and a negative terminal, the energy storage capacitor is connected between the positive terminal and the negative terminal in parallel, the high-voltage switch is connected between the parallel end of the energy storage capacitor and the terminal, and the power supply device and the metal foil form a loop through the pair of conducting copper strips so as to conduct instantaneous pulse heavy current.
The invention adopts another technical scheme that: a method for forming and welding a metal plate comprises the following steps:
step S1, clamping the tool: placing a plate to be formed below the processed metal foil, placing a flying plate above the metal foil, placing a target plate above the flying plate, fixing the metal foil by using a foil pressing block, fixing a positive and negative electrode wiring terminal by using a line pressing block, and adjusting the height of an upper pressing block by using a height-adjusting nut so as to apply a clamping force downwards;
step S2, charging the capacitor; the 380V alternating current is firstly boosted through a transformer, then the alternating current is converted into direct current through a rectifier, then an energy storage capacitor is charged through a current limiting resistor, and a charging loop is disconnected after the charging reaches a preset voltage;
step S3, electric discharge machining: the high-voltage switch is switched on, the energy storage capacitor releases instantaneous pulse heavy current, the metal foil is discharged through the conductive copper strip, the metal foil is rapidly heated and vaporized, and a large amount of expansion gas is generated to further generate driving forces in the upper direction and the lower direction; above the metal foil, the flying plate is stressed to collide the target plate at high speed to realize welding; and under the metal foil, the plate to be formed is stressed to be tightly attached to the forming concave cavity to form the plate with the local convex part.
Compared with the prior art, the invention has the following effects: the invention has reasonable design, can form the plate while welding, and the formed plate can be used as a target plate for next welding, has good forming and welding effects, does not need a base plate between the target plate and the fly plate, can reduce the assembling and positioning time, improves the efficiency and realizes continuous production.
Description of the drawings:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded view of an embodiment of the present invention;
FIG. 3 is a schematic view showing the configuration of a power supply device in the embodiment of the present invention;
FIG. 4 is a schematic diagram of the construction of the pretensioned state in an embodiment of the present invention;
FIG. 5 is a schematic view of the forming direction during processing in an embodiment of the present invention;
FIG. 6 is a schematic top view of an embodiment of the present invention;
FIG. 7 is a schematic top view of a shoe according to an embodiment of the present invention;
FIG. 8 is a schematic top view of a linking arm in an embodiment of the present invention;
FIG. 9 is a schematic view of the construction of a metal foil according to an embodiment of the present invention;
FIG. 10 is a schematic view showing the structure of a molded plate member (target plate) in the embodiment of the present invention.
In the figure:
1-an insulating base; 101-a first mounting groove; 102-a second mounting groove; 103 through holes; 104-positioning screw holes; 2-vertical guide rod; 3-a vertical screw; 4-supporting the cushion block; 401-a second positioning hole; 402-a first positioning hole; 5-conductive copper bars; 6-pressing line blocks; 7-lower cushion block; 701-forming a cavity; 8-a board to be formed; 9-a second set screw; 10-a nut; 11-foil briquetting; 12-a metal foil; 13-a first set screw; 14-a flyboard; 15-target plate; 151-local protrusions; 16-briquetting; 161-a housing cavity; 17-heightening the nut; 18-a linker arm; 181-sliding through hole; 182-vertical through holes; 183-countersinks; 19-a connection screw; 21-a high voltage switch; 22-an energy storage capacitor; a rectifier 23; 24-a current limiting resistor; 25-step-up transformer; 26-a primary coil; 27-a secondary coil; 28-positive and negative terminals; 29-locking nut.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in figures 1-10, the invention relates to a device for forming and welding metal plate materials, which comprises an insulating base 1, a lower cushion block 7 and an upper pressing block 16, the lower cushion block 7 is arranged on the insulating base 1, the upper pressing block 16 is arranged above the lower cushion block 7, a target plate 15, a flying plate 14, a metal foil 12 and a plate 8 to be formed are sequentially arranged between the upper pressing block 16 and the lower cushion block 7 from top to bottom, the flying plate 14 and the target plate 15 form a metal plate to be connected (welded), the lower cushion block 7 is used for supporting a plate 8 to be formed, the upper pressing block 16 presses the target plate 15, the flying plate 14, the metal foil 12 and the plate 8 to be formed on the lower cushion block 7, the two ends of the metal foil 12 are respectively connected with a positive terminal 28 and a negative terminal 28 of a power supply device, the top surface of the target plate 15 is provided with a local bulge 151 protruding upwards, and the bottom surface of the upper pressing block 16 is provided with an accommodating cavity 161 matched with the local bulge 151; the top surface of the lower cushion block 7 is provided with a forming cavity 701 which is matched with the shape of the local bulge 151, so that the plate 8 to be formed can form the local bulge in the forming cavity 701, and finally the formed plate is obtained. When the device works, the power supply device supplies power to the metal foil 12, the metal foil 12 is rapidly heated and vaporized, and a large amount of expansion gas is generated to generate driving forces in the upper direction and the lower direction; above the metal foil 12, the flying plate 14 is stressed to collide the target plate 15 at high speed to realize welding; under the metal foil 12 the plate 8 to be formed is forced against the forming cavity 701 and becomes a plate with local protrusions that can be used as a target plate for the next weld.
In this embodiment, a connecting arm 18 is horizontally arranged above the insulating base 1, one end of the connecting arm 18 is connected with a vertical adjusting assembly, the other end of the connecting arm 18 is located above the upper pressing block 16, and the connecting arm 18 and the upper pressing block 16 are connected and fixed through a connecting screw 19. The vertical adjusting component is used for adjusting the position of the connecting arm along the vertical direction, and the connecting arm drives the upper pressing block to move so as to apply clamping force downwards.
In this embodiment, a rectangular supporting cushion block 4 is arranged on the insulating base 1 beside the lower cushion block 7, the supporting cushion block 4 is used for supporting the vertical adjusting assembly, a first positioning hole 401 which is vertically through is arranged in the middle of the supporting cushion block 4, and a pair of second positioning holes 402 are arranged on the left side and the right side of the first positioning hole 401.
In this embodiment, the vertical adjusting assembly includes a vertical screw rod 3 and a pair of vertical guide rods 2 arranged in parallel on two sides of the vertical screw rod 3, the lower end of the vertical screw rod 3 is installed in a first positioning hole 401 of a supporting cushion block 4, the lower end of the vertical guide rod 2 is installed in a second positioning hole 402 of the supporting cushion block 4, and the supporting cushion block 4 supports and positions the vertical screw rod 3 and the vertical guide rod 2. Vertical through-hole 182 has been seted up on the linking arm 18, the left and right sides of vertical through-hole 182 is equipped with sliding through-hole 181, vertical screw rod 3 runs through vertical through-hole 182 along vertical slip, and vertical guide arm 2 runs through sliding through-hole 181 along vertical slip, the upper and lower both sides of linking arm 18 all are equipped with the height-adjusting nut 17 with vertical screw rod 3 looks spiro union, and height-adjusting nut 17 through upper and lower both sides is connected linking arm 18 and vertical screw rod 3 fixedly, through height-adjusting nut 17 of rotating, can adjust the height of linking arm 18. The vertical screw, the vertical guide rod, the supporting cushion block, the upper pressing block and the connecting arm are combined to form a clamping mechanism, the height of the connecting arm is adjusted through the heightening nut, and then the upper pressing block can provide downward pressing force F (shown in figure 4) for resisting impact force generated by vaporization explosion and ensuring the stability of the whole device.
In this embodiment, in order to fix the vertical screw rod conveniently, the top surface of the supporting cushion block 4 is provided with a locking nut 29 screwed with the vertical screw rod 18, and the vertical screw rod and the supporting cushion block are fixed by using the locking nut.
In this embodiment, the insulating base 1 is provided with a first mounting groove 101 for accommodating the supporting cushion block 4, a second mounting groove 102 for accommodating the lower cushion block 7 is arranged beside the first mounting groove 101, and the second mounting groove is through along the front-back direction.
In this embodiment, the left and right sides of the lower cushion block 7 are provided with a pair of conductive copper bars 5 fixed on the insulating base 1, the rear ends of the pair of conductive copper bars 5 are respectively connected with the left and right ends of the metal foil 12, and the front ends of the pair of conductive copper bars 5 are respectively connected with the positive and negative terminals 28 of the power supply device.
In this embodiment, a foil pressing block 11 for pressing a metal foil 12 on the top surface of the conductive copper bar 5 is disposed above the rear end of the conductive copper bar 5, and the foil pressing block 11 is connected to the conductive copper bar 5 through a first fixing screw 13; the upper part of the front end of the conductive copper bar 5 is provided with a line pressing block 6, the line pressing block 6 is used for pressing the positive and negative wiring terminals 28 on the top surface of the conductive copper bar 5, and the line pressing block 6 is connected with the conductive copper bar 5 through a second fixing screw 9. The wire pressing block and the foil pressing block are screwed on the conductive copper strip through threaded connection, and particularly, the positive and negative electrode connecting terminals are tightly pressed, so that electric sparks caused by untight wire pressing are avoided.
In this embodiment, the metal foil 12 is in a dumbbell-like shape with a narrow middle and wide ends, and when a large instantaneous pulse current is applied, a large amount of expansion gas is rapidly vaporized at the narrow middle part of the metal foil, thereby generating a driving pressure.
In this embodiment, the outer sides of the lower cushion block 7 and the metal foil 12 are wrapped with PET polyester films, so that the resistance of the power-on loop is reduced, and the energy utilization rate of the system is improved.
In this embodiment, the power supply device includes a step-up transformer 25, a rectifier 23, a current-limiting resistor 24, an energy-storage capacitor 22 and a high-voltage switch 21, a primary coil 26 of the step-up transformer 25 is externally connected with 380V alternating current, a secondary coil 27 of the step-up transformer 25 is connected in series with the rectifier 23 and the current-limiting resistor 24 and is electrically connected with a pair of conductive copper strips 5 through a positive terminal and a negative terminal 28, the energy-storage capacitor 22 is connected in parallel between the positive terminal and the negative terminal 28, and the high-voltage switch 21 is connected between the parallel end of the energy-storage capacitor 22 and the terminals, and forms a loop with the metal foil 12 through the pair of conductive copper strips 5 to conduct instantaneous pulse large current.
In this embodiment, the receiving cavity 161, the forming cavity 701 and the local protrusion 151 are adapted in shape, and have a trapezoidal cross section. The plate to be formed can be changed into a plate with a local convex part after the processing deformation is finished, and the structure of the plate is the same as that of the target plate, so that the plate can be used as the target plate for the next welding, and the two processing processes are continuous.
In this embodiment, insulating base 1 adopts insulating good bakelite material, can guarantee operation process's safety, and insulating base's first mounting groove bottom is bored and is equipped with the through-hole that is used for vertical screw rod location, has still processed the location screw in addition for installation conduction copper bar.
In this embodiment, the flying plate 14 and the target plate 15 are to-be-connected metal plates, and the flying plate 14 obtains a certain speed to impact the target plate 15 by the driving force generated by the metal foil 12, so as to generate a solid-phase metallurgical bonding phenomenon, thereby performing welding. Because the target plate 15 and the upper pressing block 16 have a cavity depth with a certain distance in the geometric shape, the flying plate 14 can be accelerated to a high speed within the distance after being stressed, and the condition of realizing collision welding is met.
In this embodiment, the assembly sequence of the apparatus is: the surfaces of the lower cushion block 7 and the metal foil 12 are coated with a PET film for insulation treatment to reduce the loop resistance and other unnecessary external factors, and then the lower cushion block 7 is placed in the second mounting groove 102 of the insulation base 1, and the plate 8 to be formed is placed on the lower cushion block 7. And then fixing a pair of conductive copper bars 5 on the insulating base 1 by using screws, placing a metal foil 12 above the plate 8 to be formed, and positioning and fastening the metal foil on the conductive copper bars 5 by using a foil pressing block 11 and the screws. The flying plate 14 and the target plate 15 are then sequentially stacked on the metal foil 12, and the target plate 15 with the local protrusions 151 is aligned with the receiving cavity 161 of the upper pressing block 16. Then the height of the connecting arm 18 is adjusted to enable the upper pressing block 16 to apply pressing force to the whole tool from top to bottom so as to resist the impact force of vaporization explosion. And finally, fixing the positive and negative terminals 28 of the external power supply device by using the wire pressing block 6, and screwing the positive and negative terminals by using bolts and nuts to realize the connection with an external circuit system (namely, the power supply device).
The specific implementation process comprises the following steps: comprises the following steps:
step S1, clamping the tool: assembling according to the assembly sequence, placing the plate 8 to be formed below the processed metal foil 12, placing the flying plate 14 above the metal foil 12, placing the target plate 15 above the flying plate 14, fixing the metal foil 12 by using the foil pressing block 11, fixing the positive and negative terminals 28 by using the wire pressing block 6, and adjusting the height of the upper pressing block 16 by using the heightening nut 17 to apply a clamping force downwards;
step S2, charging the capacitor; the 380V alternating current is firstly boosted through a boosting transformer 25, then the alternating current is converted into direct current through a rectifier 23, then an energy storage capacitor 22 is charged through a current limiting resistor 24, and a charging loop is disconnected after the charging reaches a preset voltage;
step S3, electric discharge machining: the high-voltage switch 21 is switched on, the energy storage capacitor 22 releases instantaneous pulse heavy current, the metal foil 12 is discharged through the conductive copper strip 5, the metal foil 12 is rapidly heated and vaporized, and a large amount of expansion gas is generated to further generate driving forces in the upper direction and the lower direction; the flying plate 14 is stressed to collide with the target plate 15 at high speed above the metal foil 12, so that electric welding between the flying plate 14 and the target plate 15 is realized; under the metal foil 12 the plate 8 to be formed is forced against the forming cavity 701 and becomes a plate with local protrusions that can be used as a target plate for the next weld.
The invention has the advantages that: (1) the sheet welding is carried out through the impact force of the gasification of the foil, and compared with the magnetic pulse welding with a similar forming mechanism, the sheet welding has the advantages that the applicable material range is wide, and the sheet welding is not limited by the magnetic conductivity of the sheet; (2) the low-price metal foil (aluminum foil) is selected as the trigger material, so that the cost can be reduced, and the service life of the trigger mechanism is not caused; (3) the impact force generated by the gasification of the foil is large enough to ensure the quality of the connection area; (4) the plate can be formed during welding, and the formed plate can be used as a target plate for next welding; (5) the plate spot welding structure with the concave cavity does not need to use a base plate, can reduce the assembling and positioning time, is convenient to assemble, improves the efficiency and has low cost.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a sheet metal material takes shape and welded device which characterized in that: the forming device comprises an insulating base, a lower cushion block arranged on the insulating base and an upper pressing block arranged above the lower cushion block, wherein a target plate, a flying plate, a metal foil and a plate to be formed are sequentially arranged between the upper pressing block and the lower cushion block from top to bottom; and a molding cavity matched with the shape of the local bulge is formed in the top surface of the lower cushion block.
2. An apparatus for forming and welding sheet metal material, according to claim 1, wherein: the insulating base's top is equipped with the linking arm, the one end of linking arm is connected with vertical adjusting part, the other end and the last briquetting fixed connection of linking arm.
3. An apparatus for forming and welding sheet metal material, according to claim 2, wherein: the insulation base is provided with a supporting cushion block, the vertical adjusting assembly comprises a vertical screw rod and a pair of vertical guide rods which are arranged on two sides of the vertical screw rod in parallel, the lower ends of the vertical screw rod and the vertical guide rods are arranged on the supporting cushion block, the vertical screw rod and the vertical guide rods are vertically and slidably penetrated through the connecting arm, and the upper side and the lower side of the connecting arm are respectively provided with a height adjusting nut which is in threaded connection with the vertical screw rod; and the top surface of the supporting cushion block is provided with a locking nut which is in threaded connection with the vertical screw rod.
4. An apparatus for forming and welding sheet metal material, according to claim 3, wherein: the insulation base is provided with a first mounting groove used for accommodating the supporting cushion block, a second mounting groove used for accommodating the lower cushion block is arranged beside the first mounting groove, and the second mounting groove is communicated along the front-back direction.
5. An apparatus for forming and welding sheet metal material, according to claim 1, wherein: the left side and the right side of the lower cushion block are provided with a pair of conductive copper bars, the rear ends of the pair of conductive copper bars are respectively connected with the left end and the right end of the metal foil, and the front ends of the pair of conductive copper bars are respectively connected with a positive connecting terminal and a negative connecting terminal of a power supply device.
6. An apparatus for forming and welding sheet metal material, according to claim 5, wherein: a foil pressing block for pressing a metal foil on the top surface of the conductive copper strip is arranged above the rear end of the conductive copper strip, and the foil pressing block is connected with the conductive copper strip through a first fixing screw; and a wire pressing block is arranged above the front end of the conductive copper bar and used for pressing the wiring terminal on the top surface of the conductive copper bar, and the wire pressing block is connected with the transmission copper bar through a second fixing screw.
7. An apparatus for forming and welding sheet metal material, according to claim 1, wherein: the metal foil is in a dumbbell-like shape with a narrow middle part and wide two ends.
8. An apparatus for forming and welding sheet metal material, according to claim 1, wherein: the outer sides of the lower cushion block and the metal foil are wrapped with PET polyester films.
9. An apparatus for forming and welding sheet metal material, according to claim 5, wherein: the power supply device comprises a step-up transformer, a rectifier, a current-limiting resistor, an energy storage capacitor and a high-voltage switch, wherein a primary coil of the step-up transformer is externally connected with a 380V alternating current, a secondary coil of the step-up transformer is connected with the rectifier and the current-limiting resistor in series and is electrically connected with a pair of conductive copper strips through a positive terminal and a negative terminal, the energy storage capacitor is connected between the positive terminal and the negative terminal in parallel, the high-voltage switch is connected between the parallel end of the energy storage capacitor and the terminal, and the power supply device and the metal foil form a loop through the pair of conductive copper strips so as to conduct the transient pulse heavy current.
10. A method for forming and welding metal plates is characterized in that: apparatus for forming and welding comprising the use of sheet metal material according to any one of claims 1 to 9, comprising the steps of:
step S1, clamping the tool: placing a plate to be formed below the processed metal foil, placing a flying plate above the metal foil, placing a target plate above the flying plate, fixing the metal foil by using a foil pressing block, fixing a positive and negative electrode wiring terminal by using a line pressing block, and adjusting the height of an upper pressing block by using a height-adjusting nut so as to apply a clamping force downwards;
step S2, charging the capacitor; the 380V alternating current is firstly boosted through a transformer, then the alternating current is converted into direct current through a rectifier, then an energy storage capacitor is charged through a current limiting resistor, and a charging loop is disconnected after the charging reaches a preset voltage;
step S3, electric discharge machining: the high-voltage switch is switched on, the energy storage capacitor releases instantaneous pulse heavy current, the metal foil is discharged through the conductive copper strip, the metal foil is rapidly heated and vaporized, and a large amount of expansion gas is generated to further generate driving forces in the upper direction and the lower direction; above the metal foil, the flying plate is stressed to collide the target plate at high speed to realize welding; and under the metal foil, the plate to be formed is stressed to be tightly attached to the forming concave cavity to form the plate with the local convex part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246903.4A CN113857856A (en) | 2021-10-26 | 2021-10-26 | Device and method for forming and welding metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246903.4A CN113857856A (en) | 2021-10-26 | 2021-10-26 | Device and method for forming and welding metal plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113857856A true CN113857856A (en) | 2021-12-31 |
Family
ID=78997653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111246903.4A Pending CN113857856A (en) | 2021-10-26 | 2021-10-26 | Device and method for forming and welding metal plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113857856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319322A (en) * | 2022-08-26 | 2022-11-11 | 广州亨龙智能装备股份有限公司 | Explosion process and welding structure of high-current pulse energy storage resistor |
| CN115971712A (en) * | 2023-01-03 | 2023-04-18 | 华中科技大学 | High-speed impact welding method for metal |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020182436A1 (en) * | 2000-05-02 | 2002-12-05 | Weihs Timothy P. | Freestanding reactive multilayer foils |
| CN104540982A (en) * | 2012-04-05 | 2015-04-22 | 俄亥俄州大学 | Electrically driven rapidly vaporizing foils, wires and strips used for collision welding and sheet metal forming |
| CN105458496A (en) * | 2015-12-16 | 2016-04-06 | 江苏大学 | Synchronous welding and forming method and device for laser shock metal foil plates |
| CN108838575A (en) * | 2018-08-15 | 2018-11-20 | 福州大学 | A kind of dissimilar metal sheet welder and method |
| CN108856532A (en) * | 2018-06-27 | 2018-11-23 | 武汉理工大学 | A kind of lightweight high-intensity sheet metal high speed impact rivet welding composite joint technique |
| CN109821963A (en) * | 2019-03-29 | 2019-05-31 | 福州大学 | A kind of metal bipolar board manufacturing apparatus and its working method |
| CN111604402A (en) * | 2019-02-26 | 2020-09-01 | 北京机电研究所有限公司 | Aluminum alloy sheet precise shaping method and device based on electro-hydraulic forming |
| CN112518159A (en) * | 2020-11-12 | 2021-03-19 | 华中科技大学 | Surface treatment and welding device and method for metal workpiece |
| CN213435426U (en) * | 2020-09-22 | 2021-06-15 | 陕西国防工业职业技术学院 | Fixed subassembly is used in machine-building rubber coating |
| US20210187579A1 (en) * | 2019-12-18 | 2021-06-24 | Harbin Institute Of Technology | Device and method for forming metal plate by using high-energy electric pulse to drive energetic materials |
| CN113458234A (en) * | 2021-06-29 | 2021-10-01 | 华中科技大学 | Device and method for forming workpiece by utilizing metal foil electrified explosion shock wave |
| CN216325788U (en) * | 2021-10-26 | 2022-04-19 | 福州大学 | Metal plate forming and welding device |
-
2021
- 2021-10-26 CN CN202111246903.4A patent/CN113857856A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020182436A1 (en) * | 2000-05-02 | 2002-12-05 | Weihs Timothy P. | Freestanding reactive multilayer foils |
| CN104540982A (en) * | 2012-04-05 | 2015-04-22 | 俄亥俄州大学 | Electrically driven rapidly vaporizing foils, wires and strips used for collision welding and sheet metal forming |
| CN105458496A (en) * | 2015-12-16 | 2016-04-06 | 江苏大学 | Synchronous welding and forming method and device for laser shock metal foil plates |
| CN108856532A (en) * | 2018-06-27 | 2018-11-23 | 武汉理工大学 | A kind of lightweight high-intensity sheet metal high speed impact rivet welding composite joint technique |
| CN108838575A (en) * | 2018-08-15 | 2018-11-20 | 福州大学 | A kind of dissimilar metal sheet welder and method |
| CN111604402A (en) * | 2019-02-26 | 2020-09-01 | 北京机电研究所有限公司 | Aluminum alloy sheet precise shaping method and device based on electro-hydraulic forming |
| CN109821963A (en) * | 2019-03-29 | 2019-05-31 | 福州大学 | A kind of metal bipolar board manufacturing apparatus and its working method |
| US20210187579A1 (en) * | 2019-12-18 | 2021-06-24 | Harbin Institute Of Technology | Device and method for forming metal plate by using high-energy electric pulse to drive energetic materials |
| CN213435426U (en) * | 2020-09-22 | 2021-06-15 | 陕西国防工业职业技术学院 | Fixed subassembly is used in machine-building rubber coating |
| CN112518159A (en) * | 2020-11-12 | 2021-03-19 | 华中科技大学 | Surface treatment and welding device and method for metal workpiece |
| CN113458234A (en) * | 2021-06-29 | 2021-10-01 | 华中科技大学 | Device and method for forming workpiece by utilizing metal foil electrified explosion shock wave |
| CN216325788U (en) * | 2021-10-26 | 2022-04-19 | 福州大学 | Metal plate forming and welding device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319322A (en) * | 2022-08-26 | 2022-11-11 | 广州亨龙智能装备股份有限公司 | Explosion process and welding structure of high-current pulse energy storage resistor |
| CN115971712A (en) * | 2023-01-03 | 2023-04-18 | 华中科技大学 | High-speed impact welding method for metal |
| CN115971712B (en) * | 2023-01-03 | 2023-08-18 | 华中科技大学 | High-speed impact welding method for metal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216325788U (en) | Metal plate forming and welding device | |
| CN113857856A (en) | Device and method for forming and welding metal plate | |
| CN108838575B (en) | Dissimilar metal plate welding device and method | |
| US4146771A (en) | Apparatus for making a side terminal weld | |
| EP3544086A1 (en) | Battery pack | |
| EP2740168A1 (en) | Single cell and battery made of a plurality of single cells | |
| CN107611329B (en) | Battery welding device and battery module | |
| CN110732794A (en) | ultrasonic and electromagnetic pulse composite welding device and composite welding method | |
| CN109014554B (en) | Flexible package battery tab ultrasonic welding method and equipment | |
| CN201161330Y (en) | Impulse current spot welder | |
| US9136518B2 (en) | Terminal for accumulator cells | |
| CN1366359A (en) | Joint structure of battery conductive contact | |
| CN209006870U (en) | Flexible-packed battery tab device for ultrasonic welding and its soldering tip | |
| CN217588708U (en) | Combinable super capacitor module for energy storage | |
| CN217719320U (en) | Capacitor capable of efficiently dissipating heat | |
| CN215988373U (en) | Primary coil structure and high-voltage pulse transformer thereof | |
| US20180029156A1 (en) | Discharge Welding System | |
| CN218334197U (en) | Metal welding piece, battery module and electric vehicle | |
| CN219026285U (en) | Device for simultaneously plating two surfaces of metal plate | |
| CN220029088U (en) | Connecting device for rear water flowing groove of automobile body | |
| CN216097171U (en) | Battery and nickel strap welded frock | |
| CN220400840U (en) | Polymer lithium ion battery pole piece flat plate connector for heavy current | |
| CN219818463U (en) | Battery module welding fixture | |
| CN109821963A (en) | A kind of metal bipolar board manufacturing apparatus and its working method | |
| CN111464164B (en) | Three-column compression joint cascade trigger switch and compression joint main body structure thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211231 |