CN114799464B - Electromagnetic pulse welding workbench - Google Patents
Electromagnetic pulse welding workbench Download PDFInfo
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- CN114799464B CN114799464B CN202210327112.2A CN202210327112A CN114799464B CN 114799464 B CN114799464 B CN 114799464B CN 202210327112 A CN202210327112 A CN 202210327112A CN 114799464 B CN114799464 B CN 114799464B
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- 238000003466 welding Methods 0.000 title claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 84
- 238000012423 maintenance Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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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
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention discloses an electromagnetic pulse welding workbench, which comprises a reciprocating alternating mechanism, two electromagnetic pulse exchange platforms arranged on the reciprocating alternating mechanism, an electromagnetic pulse assembly, a maintenance lifting mechanism and an azimuth adjusting mechanism, wherein the electromagnetic pulse assembly comprises an electromagnetic pulse lifting mechanism, an electromagnetic pulse coil and positive and negative coaxial cables, the electromagnetic pulse coil is communicated with the positive and negative electrodes of the positive and negative coaxial cables, and a coil magnetic field is formed when high-frequency current passes through the electromagnetic pulse coil; the electromagnetic pulse exchange table is provided with a height difference for placing workpieces to be welded in an up-down layered manner, so that gaps are reserved between the workpieces, and the electromagnetic pulse exchange table alternately moves to the position right below the electromagnetic pulse assembly through a reciprocating alternating mechanism to perform electromagnetic pulse welding; the maintenance lifting mechanism drives the electromagnetic pulse assembly to integrally lift; the movable end of the azimuth adjusting mechanism can be installed on the maintenance lifting mechanism in a front-back sliding mode, and the welding mechanism has the characteristics of high welding efficiency, high stability, high safety and ingenious design.
Description
Technical Field
The invention relates to the technical field of electromagnetic pulse, in particular to an electromagnetic pulse welding workbench.
Background
The drawbacks of the conventional brazing process are as follows: 1) The fuel gas, the soldering flux and the brazing filler metal can generate waste gas, and the cooling can generate waste water, so that the environment is greatly polluted; 2) The skill requirement on staff is high, the training time is long, and the labor cost is high; 3) The working environment is poor, and the danger coefficient is high.
The electromagnetic pulse welding is a solid cold welding method, which can weld conductive metals with similar or dissimilar properties together, two welded workpieces generate instant high-speed collision under the action of a strong pulse magnetic field, the surface layer of the material enables atoms of the two materials to meet in an interatomic distance under the action of a very high pressure wave, so that stable metallurgical bonding is formed on an interface, particularly a special coil generates an alternating magnetic field under the action of pulse current, meanwhile, induction current is generated in an outer-layer processing part, the magnetic field generated by the induction current interacts with a coil magnetic field, repulsive force is generated between the coil and an outer-ring part, and finally the outer-ring processing part is bonded to the inner-ring processing part at a very high movement speed to form welding.
Disclosure of Invention
The invention aims to provide an electromagnetic pulse welding workbench which has good welding effect, high efficiency and strong safety and solves the problems of environmental pollution, high process requirement and high risk coefficient of the environment in the process of adopting the traditional brazing process.
The technical scheme adopted by the invention is as follows: an electromagnetic pulse welding workbench comprises a reciprocating alternating mechanism, two electromagnetic pulse exchange platforms arranged on the reciprocating alternating mechanism, an electromagnetic pulse assembly, a maintenance lifting mechanism and an azimuth adjusting mechanism, wherein the electromagnetic pulse assembly comprises an electromagnetic pulse lifting mechanism, an electromagnetic pulse coil and positive and negative coaxial cables, the electromagnetic pulse coil is communicated with the positive and negative electrodes of the positive and negative coaxial cables, and a coil magnetic field is formed when high-frequency current passes through the electromagnetic pulse coil; the electromagnetic pulse exchange table is used for placing workpieces to be welded in an up-down layered mode, gaps are reserved between the workpieces, and the electromagnetic pulse exchange table alternately moves to the position right below the electromagnetic pulse assembly through a reciprocating alternating mechanism to perform electromagnetic pulse welding; the movable end of the maintenance lifting mechanism is arranged at the top end of the electromagnetic pulse assembly, so that the electromagnetic pulse assembly is driven to integrally lift; the movable end of the azimuth adjusting mechanism can be arranged on the maintenance lifting mechanism in a front-back sliding mode, so that the electromagnetic pulse assembly is driven to move in the front-back azimuth.
According to the scheme, the reciprocating alternating mechanism comprises a bottom frame, a belt transmission device and guide rails which are symmetrically arranged in front-back mode, sliding blocks are arranged on the guide rails, the electromagnetic pulse exchanging table comprises a supporting seat, a workpiece placing table which is positioned on the supporting seat, and a clamp which is placed on the workpiece placing table and is used for tightly supporting a workpiece from top to bottom, the workpiece placing table is provided with a height difference and is used for placing the workpiece to be welded in an up-down layered mode, gaps are reserved between the workpieces, the workpiece to be welded is placed in a groove of the workpiece placing table, and after layered placement, the workpiece is tightly supported through the clamp, so that the workpiece is firmly installed; the bottom ends of the two electromagnetic pulse exchange platforms are fixed on the corresponding sliding blocks, electromagnetic pulse welding is alternately performed through the belt transmission device, and the welding efficiency is greatly improved through the alternate welding of workpieces, so that the electromagnetic pulse welding and the workpiece installation can be synchronously performed.
Still preferably, the supporting seat comprises a supporting seat bottom frame, a supporting seat main body and a supporting seat top plate which are arranged from bottom to top, the supporting seat bottom frame is fixedly arranged on a belt of the sliding block and the belt transmission device, and the electromagnetic pulse exchange table is reciprocally alternated through belt transmission, so that the labor cost is saved, the time cost is saved, and the labor capacity of operators is effectively reduced; the workpiece placement table comprises an insulating rubber plate, an insulating base plate and a detachable tool bottom plate which are arranged from bottom to top, wherein the detachable tool bottom plate is provided with a height difference for placing workpieces to be welded in an up-down layered manner, so that a gap is reserved between the workpieces to be welded; the clearance is 1.5mm ~ 2.5mm, and the clearance is suitable, avoids the too far or too near welding failure that leads to of distance, and detachable frock bottom plate adopts insulating material, and insulating offset plate, insulating backing plate and detachable frock bottom plate all adopt insulating material, and the insulation is above 20kv to the ground, effectively ensures operating personnel's personal safety, avoids high frequency current to break through the work piece and settles the platform.
Still preferably, the electromagnetic pulse assembly further comprises a main pressure-bearing insulating block and a main connecting insulating block which are arranged from bottom to top, wherein the insulating block is used as a supporting piece of the electromagnetic pulse assembly, so that the electromagnetic pulse assembly is in a square shape as a whole, and the potential safety hazard of electric leakage when high-frequency current flows is effectively eliminated by adopting an insulating material; the electromagnetic pulse coil comprises a conductive water cooler, an electrode connecting block and an electrode core positioned between part of adjacent electrode connecting blocks, the width of the electrode core is smaller than that of other electrode connecting blocks, and the electromagnetic pulse coil can be communicated with the anode and the cathode of the anode coaxial cable and the cathode coaxial cable, so that a coil magnetic field is formed when high-frequency current passes through the electrode core, the structural design is reasonable, the anode and the cathode of the anode coaxial cable are skillfully connected, and the space is saved.
Further preferably, the conductive water cooler comprises a positive conductive water cooler, a middle conductive water cooler and a negative conductive water cooler, and the electrode connecting block comprises a positive connecting block, a negative connecting block, a middle connecting block and a negative connecting frame; the positive electrode of the positive and negative coaxial cable is connected with the positive electrode connecting block through the positive electrode conductive water cooler, the negative electrode of the positive and negative coaxial cable is connected with the negative electrode connecting frame, and the negative electrode connecting frame is connected with the negative electrode connecting block through the negative electrode conductive water cooler, so that a closed loop is formed for high-frequency current transmission of the positive and negative coaxial cable, and the conductive water cooler is used for cooling high temperature generated when the high-frequency current passes through, so that component burning caused by high temperature is effectively avoided, and the safety of electromagnetic pulse welding is enhanced;
the electrode core is flat-bottom U-shaped, the minimum width of the electrode core ensures that energy is concentrated at the electrode core when high-frequency current passes through, and the electrode core is initially fixed by inserting two side ends into grooves corresponding to the electrode connecting blocks, the electrode core is made of special alloy copper, the strength is high, the shaping is good, the conductivity is good, the service life is longer than that of common red copper, 300ka pulse current can be used for three thousands of times, and 500ka pulse current can be used for 800 times; the joint of the positive electrode connecting block, the negative electrode connecting block, the middle connecting block and a plurality of electrode cores is provided with a support piece which is fixed again, so that the stable installation of the electrode cores is ensured, the support piece is fixedly provided with a reinforcing rod which is vertically upwards, the other end of the reinforcing rod sequentially penetrates through the main pressure-bearing insulating block and the reinforcing bottom plate and then stretches into the main connecting insulating block, and the reinforcing rod is connected with the main connecting insulating block and the main pressure-bearing insulating block, so that the integral structure of the electromagnetic pulse assembly is effectively ensured to be stable;
the cable fixing plate is arranged above the positive and negative coaxial cables to fix the cables and ensure the uniformity and the beauty of the cables;
the top of the main pressure-bearing insulating block is provided with a reinforcing bottom plate, the bottom end of the middle conductive water cooler is arranged on the middle connecting block, the top of the middle conductive water cooler penetrates through the main pressure-bearing insulating block to be flush with the reinforcing bottom plate, the structural stability is increased or reduced, a cooler insulating fixed block is arranged between the middle conductive water cooler and the inner wall of the reinforcing bottom plate, and the middle conductive water cooler can be stably arranged in the main pressure-bearing insulating block;
the electromagnetic pulse lifting mechanism adopts an air cylinder as lifting power, is convenient and quick to lift, is installed on the main connection insulating block through an air cylinder connecting plate, and is stable to install.
Further preferably, the positive electrode connecting block, the negative electrode connecting block, the middle connecting block and the electrode cores are connected in series, when the required welding energy is large, the series connection is adopted, so that the high-frequency current is divided but not split when passing through the electrode cores, the welding energy is still large, and a larger number of electrode cores can be selected for series connection, so that the welding efficiency can be effectively improved, and the welding energy is not influenced.
Further preferably, the positive electrode connecting block, the negative electrode connecting block, the middle connecting block and the electrode cores are connected in parallel, when the required welding energy is small, the parallel connection is adopted, so that high-frequency current is shunted when passing through the electrode cores, the welding energy is reduced, the electrode cores with different numbers can be selected for parallel connection, the welding energy requirement is met while the welding efficiency is improved, and the application range is wide.
Further preferably, the maintenance elevating system includes support frame, joint mechanism, cylinder layer board and the cylinder that is located the cylinder layer board, and the cylinder axle bottom passes the cylinder layer board and then is connected through joint mechanism with the electromagnetic pulse subassembly, and when the cylinder goes up and down in position, the cylinder axle can drive the electromagnetic pulse subassembly and go up and down wholly, carries out the adjustment in position about, conveniently maintains the electromagnetic pulse subassembly, design benefit, orientation adjustment mechanism's removal end and cylinder layer board fixed connection, but the cylinder layer board slidable mounting is on the upper roof of support frame from top to bottom, and the removal end through orientation adjustment mechanism drives the cylinder layer board and reciprocates to drive the electromagnetic pulse subassembly and reciprocate, when electromagnetic pulse welding is inaccurate, through orientation adjustment mechanism's back and forth movement, make electromagnetic pulse subassembly accurate adjustment to the exact welding position, the flexibility is strong.
Still preferably, the joint mechanism comprises a press-fit welding plate and an air cylinder connecting flange positioned above the press-fit welding plate, wherein linear guide shafts are arranged at four corners of the press-fit welding plate around the air cylinder shafts, the top ends of the linear guide shafts penetrate through the air cylinder supporting plates and are connected in pairs through guide shaft supporting rods, the structural stability of the maintenance lifting mechanism is effectively improved through the linear guide shafts and the guide shaft supporting rods, and the electromagnetic pulse assembly positioned below the maintenance lifting mechanism is ensured to be always kept in a horizontal stable state;
the end of the press-fit welding plate far away from the cylinder connecting flange is provided with a limiting device, the limiting device comprises a limiting rod flange, a limiting rod and a limiting plate, the bottom of the limiting rod flange is arranged on the press-fit welding plate, the limiting rod is arranged on the limiting rod flange, the limiting plate is arranged on a top plate on a supporting frame, the limiting plate is provided with a through hole for the top end of the limiting rod to pass through, and the limiting device can effectively ensure that the electromagnetic pulse assembly is in a stable state when the electromagnetic pulse assembly is not subjected to azimuth adjustment.
Further preferably, a guide rail is arranged at the joint of the upper top plate of the support frame corresponding to the cylinder supporting plate, and the cylinder supporting plate can move along the guide rail through a guide rail sliding block, so that the support frame is convenient to slide and reasonable in design;
the front side of the support frame is provided with the cable containing mechanism which can be manually adjusted up and down, so that the orderly arrangement of cables is effectively ensured, the cables are prevented from being twisted into a pile, the cables are complicated and are not easy to overhaul, and the danger of false touch caused by the fact that the cables are not detected after being damaged is effectively avoided; the cable containing mechanism comprises vertical sliding rods symmetrically arranged on the supporting frame, cable clamp mounting plates with two ends horizontally arranged on the vertical sliding rods and cable clamps located between the cable clamp mounting plates, the two ends of the cable clamp mounting plates can vertically move along the vertical sliding rods through vertical sliding blocks, the vertical sliding blocks are provided with switch handles, the vertical sliding blocks are manually pushed, and when the electromagnetic pulse assembly is lifted, the cable can be manually pushed to be kept horizontal with the electromagnetic pulse assembly, and damage of the cable due to bending is avoided.
The invention has the beneficial effects that:
(1) Two electromagnetic pulse exchange platforms are arranged on the reciprocating alternating mechanism, the electromagnetic pulse exchange platforms alternately move to the position right below the electromagnetic pulse assembly through the reciprocating alternating mechanism to perform electromagnetic pulse welding, and the welding efficiency is greatly improved through the alternating welding of workpieces, so that one electromagnetic pulse exchange platform is ensured to perform welding, and the other electromagnetic pulse exchange platform can perform workpiece installation.
(2) The movable end of the maintenance lifting mechanism is arranged at the top end of the electromagnetic pulse assembly, so that the electromagnetic pulse assembly is driven to integrally lift, and the maintenance operation of the component is facilitated by lifting the electromagnetic pulse assembly up and down; the movable end of the azimuth adjusting mechanism can be arranged on the maintenance lifting mechanism in a front-back sliding mode, so that the electromagnetic pulse assembly is driven to move in the front-back azimuth, the welding position of the electromagnetic pulse assembly can be finely adjusted, and the accuracy of the welding position is improved.
(3) The electromagnetic pulse assembly comprises an electromagnetic pulse lifting mechanism, an electromagnetic pulse coil and positive and negative coaxial cables, wherein the electromagnetic pulse coil is communicated with the positive and negative electrodes of the positive and negative coaxial cables, so that a coil magnetic field is formed when high-frequency current passes through the electromagnetic pulse coil, the positive and negative electrodes of the positive and negative coaxial cables are skillfully combined, and the positive and negative coaxial cables are not connected separately, so that the space is effectively saved; the electromagnetic pulse assembly is provided with an electromagnetic pulse lifting mechanism, so that the electromagnetic pulse coil can be controlled to descend to a workpiece to be welded for welding, and the labor is effectively saved.
(4) The electromagnetic pulse exchange table is provided with the height difference for placing the workpieces to be welded in an up-and-down layered mode, so that gaps are reserved between the workpieces, welding positions of the workpieces to be welded are overlapped with each other, gaps are reserved, the gap quantity of the workpieces to be welded can be guaranteed by adjusting the height difference, and the electromagnetic pulse exchange table is applicable to the workpieces to be welded with different thicknesses.
In conclusion, the welding device has the characteristics of high welding efficiency, good welding effect, strong stability, high safety and ingenious design.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of the structure of the reciprocating alternating mechanism and the electromagnetic pulse exchanging station.
Fig. 3 is a schematic view of a partial structure of the reciprocating alternating mechanism.
Fig. 4 is a front view of the electromagnetic pulse exchanging station.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a schematic structural diagram of an electromagnetic pulse assembly.
Fig. 7 is a schematic structural diagram of an electromagnetic pulse coil and positive and negative coaxial cables.
Fig. 8 is a schematic structural diagram of an electromagnetic pulse coil.
Fig. 9 is a schematic structural view of a maintenance lifting mechanism and an azimuth adjusting mechanism.
Fig. 10 is a partial schematic view of a service lift mechanism.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1 to 10, an electromagnetic pulse welding table comprises a reciprocating alternating mechanism 1, two electromagnetic pulse exchange tables 2 arranged on the reciprocating alternating mechanism 1, an electromagnetic pulse assembly 3, a maintenance lifting mechanism 4 and an azimuth adjusting mechanism 5.
The reciprocating alternate mechanism 1 consists of a chassis 11, a belt transmission device 12 and guide rails 13 which are symmetrically arranged front and back.
The electromagnetic pulse exchange table 2 has a height difference for placing workpieces to be welded in an up-down layered manner, so that gaps are reserved among the workpieces, and the electromagnetic pulse exchange table 2 moves to the position right below the electromagnetic pulse assembly 3 in an alternating manner through the reciprocating alternating mechanism 1 to perform electromagnetic pulse welding.
The guide rail 13 is provided with a sliding block, and the electromagnetic pulse exchanging table 2 is composed of a supporting seat 21, a workpiece placing table 22 positioned on the supporting seat 21, and a clamp 23 placed on the workpiece placing table 22 and used for abutting against a workpiece from top to bottom.
The workpiece placement table 22 has a height difference for placing the workpieces to be welded in an up-down layered manner, so that a gap is reserved between the workpieces, the bottom ends of the two electromagnetic pulse exchange tables 2 are fixed on the corresponding sliding blocks, and electromagnetic pulse welding is alternately performed through the belt transmission device 12.
The support base 21 is composed of a support base frame 211, a support base main body 212, and a support base top plate 213, which are disposed from bottom to top.
The supporting base frame 211 is fixedly arranged on the sliding block and a belt of the belt transmission device 12, and the electromagnetic pulse exchange table 2 is reciprocally alternated through belt transmission.
The workpiece placement table 22 is composed of an insulating rubber plate 221, an insulating base plate 222 and a detachable tooling bottom plate 223 which are arranged from bottom to top.
The detachable tooling bottom plate 223 has a height difference for placing the workpieces to be welded in an up-down layered manner, so that a gap is reserved between the workpieces to be welded, the gap is 1.5-2.5 mm, and the detachable tooling bottom plate 223 is made of an insulating material.
The electromagnetic pulse assembly 3 consists of an electromagnetic pulse lifting mechanism 31, an electromagnetic pulse coil 32, positive and negative coaxial cables 33, a main pressure-bearing insulating block 34 and a main connecting insulating block 35 which are arranged from bottom to top.
The electromagnetic pulse coil 32 is connected to the positive and negative electrodes of the positive and negative coaxial cables 33, and a coil magnetic field is formed when a high-frequency current passes through the electromagnetic pulse coil 32.
The electromagnetic pulse coil 32 is composed of a conductive water cooler 321, electrode connection blocks 322, and electrode cores 323 located between part of adjacent electrode connection blocks 322.
The electrode core 323 has a smaller width than the other electrode connection blocks 322, and the electromagnetic pulse coil 32 can be connected with the anode and the cathode of the anode coaxial cable 33, so that a coil magnetic field is formed when high-frequency current passes through the electrode core 325.
The conductive water cooler 321 is composed of a positive conductive water cooler 321a, a middle conductive water cooler 321b and a negative conductive water cooler 321 c.
The electrode connection block 322 is composed of a positive electrode connection block 322a, a negative electrode connection block 322b, an intermediate connection block 322c, and a negative electrode connection frame 322 d.
The positive electrode of the positive-negative coaxial cable 33 is connected with the positive electrode connecting block 322a through the positive electrode conductive water cooler 321a, the negative electrode of the positive-negative coaxial cable 33 is connected with the negative electrode connecting frame 322d, and the negative electrode connecting frame 322d is connected with the negative electrode connecting block 322b through the negative electrode conductive water cooler 321c, so that a closed loop is formed for high-frequency current transmission of the positive-negative coaxial cable 33.
The electrode core 323 is flat-bottom U-shaped, and is preliminarily fixed by inserting the two side ends into the grooves corresponding to the electrode connecting blocks 322, the electrode core 323 is made of special alloy copper, the strength is high, the shaping is good, the conductivity is good, the service life is longer than that of common red copper, the 300ka pulse current can be used for three thousands of times, and the 500ka pulse current can be used for 800 times.
The joints of the positive electrode connection block 322a, the negative electrode connection block 322b, the intermediate connection block 322c and the plurality of electrode cores 323 are provided with the fixing support 36 again.
The supporting member 36 is fixedly provided with a reinforcing rod 361 which faces vertically upwards, and the other end of the reinforcing rod 361 penetrates through the main bearing insulating block 34 and the reinforcing bottom plate 37 in sequence and then extends into the main connecting insulating block 35.
A cable fixing plate 331 is provided above the positive and negative coaxial cables 33;
the top of the main pressure-bearing insulating block 34 is provided with a reinforcing bottom plate 37, the bottom end of the middle conductive water cooler 321b is arranged on the middle connecting block 322c, the top penetrates through the main pressure-bearing insulating block 34 to be flush with the reinforcing bottom plate 37, and a cooler insulating fixed block is arranged between the middle conductive water cooler 321b and the inner wall of the reinforcing bottom plate 37;
the electromagnetic pulse lifting mechanism 31 adopts an air cylinder as lifting power and is mounted on the main connection insulating block 35 through an air cylinder connection plate.
When the required welding energy is large, the positive electrode connecting block 322a, the negative electrode connecting block 322b and the middle connecting block 322c are connected with the electrode cores 323 in series, so that the high-frequency current is divided but not split when passing through the electrode cores, the welding energy is still large, and a larger number of electrode cores can be selected for series connection, so that the welding efficiency can be effectively improved, and the welding energy is not influenced.
When the required welding energy is small, the positive electrode connecting block 322a, the negative electrode connecting block 322b and the middle connecting block 322c are connected with the electrode cores 323 in parallel, so that high-frequency current is split when passing through the electrode cores, the welding energy is reduced, the electrode cores with different numbers can be selected for being connected in parallel, and the welding energy requirement is met while the welding efficiency is improved.
The movable end of the maintenance lifting mechanism 4 is arranged at the top end of the electromagnetic pulse assembly 3, so that the electromagnetic pulse assembly 3 is driven to integrally lift.
The moving end of the azimuth adjusting mechanism 5 can be installed on the maintenance lifting mechanism 4 in a sliding way back and forth, so as to drive the electromagnetic pulse assembly 3 to move back and forth in azimuth.
The maintenance lifting mechanism 4 consists of a supporting frame 41, a joint mechanism 42, a cylinder supporting plate 43 and a cylinder 44 positioned on the cylinder supporting plate 43.
The bottom end of the cylinder shaft penetrates through the cylinder supporting plate 43 and then is connected with the electromagnetic pulse assembly 3 through the joint mechanism 42, when the cylinder 44 ascends and descends in the vertical direction, the cylinder shaft can drive the electromagnetic pulse assembly 3 to integrally ascend and descend, the moving end of the direction adjusting mechanism 5 is fixedly connected with the cylinder supporting plate 43, the cylinder supporting plate 43 can be installed on the upper top plate of the supporting frame 41 in a front-back sliding mode, the moving end of the direction adjusting mechanism 5 drives the cylinder supporting plate 43 to move back and forth, and accordingly the electromagnetic pulse assembly 3 is driven to move in the front-back direction.
The joint mechanism 42 is composed of a press-fit welding plate 422 and a cylinder connecting flange 421 located above the press-fit welding plate 422.
The press-fit welding plates 422 are provided with linear guide shafts 423 around four corners of the cylinder shaft, and the top ends of the linear guide shafts are connected in pairs through guide shaft stay bars 424 after penetrating through the cylinder supporting plate 43;
the end of the press-fit welding plate 422 away from the cylinder connecting flange 421 is provided with a limiting device 425.
The limiting device 425 comprises a limiting rod flange 425a with the bottom mounted on the press-fit welding plate 422, a limiting rod 425b mounted on the limiting rod flange 425a and a limiting plate 425c mounted on the upper top plate of the supporting frame 41, wherein the limiting plate 425c is provided with a through hole for the top end of the limiting rod 425b to pass through.
A guide rail is arranged at the joint of the upper top plate of the support frame 41 corresponding to the cylinder supporting plate 43, and the cylinder supporting plate 43 can move along the guide rail through a guide rail sliding block;
the front side of the support 41 is provided with a cable housing mechanism 45 that can be manually adjusted up and down.
The cable housing mechanism 45 is composed of vertical slide bars 451 symmetrically mounted on the support frame 41, cable collet mounting plates 452 both ends of which are horizontally mounted on the vertical slide bars 451, and cable collets located between the cable collet mounting plates 452.
The two ends of the cable collet mounting plate 452 can move vertically along the vertical slide bar 451 by means of vertical slides, which are equipped with a switch handle.
The vertical sliding block can be unlocked by pulling the switch handle, and the vertical sliding block is manually pushed to move on the vertical sliding rod 451, so that the cable clamp is driven to move in a vertical direction.
The copper sheets and the aluminum sheets are placed in the grooves on the detachable tooling bottom plate 223 in an up-and-down layered manner.
The belt transmission device 12 is started, so that the belt transmission drives the electromagnetic pulse exchange table 2 to move to the position right below the electromagnetic pulse assembly 3 along the guide rail 13, and the front and back positions of the electrode core 323 can be aligned with the welding position between the copper sheet and the aluminum sheet through the front and back position fine adjustment of the position adjustment mechanism 5.
The electrode core 323 is moved down to the welding place by the electromagnetic pulse lifting mechanism 31.
The positive and negative coaxial cables 33 begin to transmit high frequency current, welding copper sheets and aluminum sheets by electromagnetic pulses.
The other electromagnetic pulse exchanging table 2 is simultaneously provided with workpieces to be welded.
After the welding is completed, the electrode core 323 is moved upwards by the electromagnetic pulse lifting mechanism 31, the electromagnetic pulse exchange table 2 is moved out through belt transmission, and the other electromagnetic pulse exchange table 2 is moved in for welding.
Claims (7)
1. An electromagnetic pulse welding workbench, which is characterized in that: the electromagnetic pulse lifting mechanism comprises a reciprocating alternating mechanism (1), two electromagnetic pulse exchange platforms (2) arranged on the reciprocating alternating mechanism (1), an electromagnetic pulse assembly (3), a maintenance lifting mechanism (4) and an azimuth adjusting mechanism (5), wherein the electromagnetic pulse assembly (3) comprises an electromagnetic pulse lifting mechanism (31), an electromagnetic pulse coil (32) and positive and negative coaxial cables (33), the electromagnetic pulse coil (32) is communicated with the positive and negative poles of the positive and negative coaxial cables (33), and a coil magnetic field is formed when high-frequency current passes through the electromagnetic pulse coil (32); the electromagnetic pulse exchange table (2) has a height difference for placing workpieces to be welded in an up-down layered manner, so that gaps are reserved among the workpieces, and the electromagnetic pulse exchange table (2) is alternately moved to the position right below the electromagnetic pulse assembly (3) through the reciprocating alternating mechanism (1) to perform electromagnetic pulse welding; the movable end of the maintenance lifting mechanism (4) is arranged at the top end of the electromagnetic pulse assembly (3), so that the electromagnetic pulse assembly (3) is driven to integrally lift; the moving end of the azimuth adjusting mechanism (5) can be arranged on the maintenance lifting mechanism (4) in a front-back sliding way, so that the electromagnetic pulse assembly (3) is driven to move in the front-back azimuth; the electromagnetic pulse assembly (3) further comprises a main pressure-bearing insulating block (34) and a main connecting insulating block (35) which are arranged from bottom to top, the electromagnetic pulse coil (32) comprises a conductive water cooler (321), an electrode connecting block (322) and an electrode core (323) positioned between partial adjacent electrode connecting blocks (322), the width of the electrode core (323) is smaller than that of the electrode connecting block (322), and the electromagnetic pulse coil (32) can be communicated with the anode and the cathode of the anode coaxial cable (33), so that a coil magnetic field is formed when high-frequency current passes through the electrode core (325); the conductive water cooler (321) comprises a positive conductive water cooler (321 a), a middle conductive water cooler (321 b) and a negative conductive water cooler (321 c), and the electrode connecting block (322) comprises a positive connecting block (322 a), a negative connecting block (322 b), a middle connecting block (322 c) and a negative connecting frame (322 d); the positive electrode of the positive-negative coaxial cable (33) is connected with the positive electrode connecting block (322 a) through the positive electrode conductive water cooler (321 a), the negative electrode of the positive-negative coaxial cable (33) is connected with the negative electrode connecting frame (322 d), and the negative electrode connecting frame (322 d) is connected with the negative electrode connecting block (322 b) through the negative electrode conductive water cooler (321 c), so that a closed loop is formed for high-frequency current transmission of the positive-negative coaxial cable (33);
the electrode core (323) is flat-bottom U-shaped, and is initially fixed by inserting two side ends into corresponding grooves of the electrode connecting blocks (322), and the electrode core (323) is made of special alloy copper; the junction of the positive electrode connecting block (322 a), the negative electrode connecting block (322 b), the middle connecting block (322 c) and a plurality of electrode cores (323) is provided with a support piece (36) which is fixed again, the support piece (36) is fixedly provided with a vertically upward reinforcing rod (361), the other end of the reinforcing rod (361) sequentially passes through a main pressure-bearing insulating block (34) and a reinforcing bottom plate (37) and then stretches into a main connecting insulating block (35), and a cable fixing plate (331) is arranged above the positive electrode coaxial cable (33);
a reinforcing bottom plate (37) is arranged at the top of the main pressure-bearing insulating block (34), the bottom end of the middle conductive water cooler (321 b) is arranged on the middle connecting block (322 c), the top of the middle conductive water cooler passes through the main pressure-bearing insulating block (34) to be level with the reinforcing bottom plate (37), and a cooler insulating fixed block is arranged between the middle conductive water cooler (321 b) and the inner wall of the reinforcing bottom plate (37);
the electromagnetic pulse lifting mechanism (31) adopts an air cylinder as lifting power and is arranged on the main connecting insulating block (35) through an air cylinder connecting plate.
2. An electromagnetic pulse welding table as defined in claim 1, wherein: the reciprocating alternating mechanism (1) comprises an underframe (11), a belt transmission device (12) and guide rails (13) which are arranged in a front-back symmetrical mode, sliding blocks are arranged on the guide rails (13), the electromagnetic pulse exchange table (2) comprises a supporting seat (21), a workpiece placement table (22) which is arranged on the supporting seat (21), a clamp (23) which is placed on the workpiece placement table (22) and used for tightly propping up a workpiece from top to bottom, the workpiece placement table (22) has a height difference and is used for placing the workpiece to be welded in an upper-lower layered mode, gaps are reserved between the workpieces, and the bottom ends of the two electromagnetic pulse exchange tables (2) are fixed on the corresponding sliding blocks and are alternately subjected to electromagnetic pulse welding through the belt transmission device (12).
3. An electromagnetic pulse welding table as defined in claim 2, wherein: the supporting seat (21) comprises a supporting seat bottom frame (211), a supporting seat main body (212) and a supporting seat top plate (213) which are arranged from bottom to top, the supporting seat bottom frame (211) is fixedly arranged on a belt of the sliding block and the belt transmission device (12), and the reciprocating alternation of the electromagnetic pulse exchange table (2) is realized through belt transmission; the workpiece placement table (22) comprises an insulating rubber plate (221), an insulating base plate (222) and a detachable tool bottom plate (223) which are arranged from bottom to top, wherein the detachable tool bottom plate (223) is provided with a height difference for placing workpieces to be welded in an up-down layered manner; the gap is 1.5 mm-2.5 mm, and the detachable tool bottom plate (223) is made of an insulating material.
4. An electromagnetic pulse welding table as defined in claim 1, wherein: the positive electrode connecting block (322 a), the negative electrode connecting block (322 b) and the middle connecting block (322 c) are connected with the electrode cores (323) in series.
5. An electromagnetic pulse welding table as defined in claim 1, wherein: maintenance elevating system (4) include support frame (41), joint mechanism (42), cylinder layer board (43) and be located cylinder (44) on cylinder layer board (43), and cylinder axle bottom passes cylinder layer board (43) back and is connected through joint mechanism (42) with electromagnetic pulse subassembly (3), and when cylinder (44) were gone up and down the position, cylinder axle can drive electromagnetic pulse subassembly (3) and go on whole the lift, the removal end and the cylinder layer board (43) fixed connection of position adjustment mechanism (5), and slidable mounting is on the upper roof of support frame (41) around cylinder layer board (43), and the removal is moved around driving cylinder layer board (43) through the removal end of position adjustment mechanism (5) to drive electromagnetic pulse subassembly (3) front and back position and remove.
6. An electromagnetic pulse welding table as defined in claim 5, wherein: the joint mechanism (42) comprises a press-fit welding plate (422) and a cylinder connecting flange (421) positioned above the press-fit welding plate (422), wherein linear guide shafts (423) are arranged at four corners of the press-fit welding plate (422) around the cylinder shafts, the top ends of the two linear guide shafts (423) penetrate through a cylinder supporting plate (43) and are connected through a guide shaft supporting rod (424), and the top ends of the other two linear guide shafts (423) are connected through another guide shaft supporting rod (424);
one end of the press fit welding plate (422) far away from the cylinder connecting flange (421) is provided with a limiting device (425), the limiting device (425) comprises a limiting rod flange (425 a) with the bottom installed on the press fit welding plate (422), a limiting rod (425 b) installed on the limiting rod flange (425 a), and a limiting plate (425 c) installed on the upper top plate of the supporting frame (41), and the limiting plate (425 c) is provided with a through hole for the top end of the limiting rod (425 b) to pass through.
7. An electromagnetic pulse welding table as defined in claim 6, wherein: a guide rail is arranged at the joint of the upper top plate of the support frame (41) corresponding to the cylinder supporting plate (43), and the cylinder supporting plate (43) can move along the guide rail through a guide rail sliding block;
the front side of support frame (41) is equipped with cable receiving mechanism (45) that can manually adjust from top to bottom, and cable receiving mechanism (45) are including vertical slide bar (451) of symmetry installation on support frame (41), cable chuck mounting panel (452) of both ends equal horizontal installation at vertical slide bar (451) and the cable chuck that is located between cable chuck mounting panel (452), the both ends of cable chuck mounting panel (452) can be along vertical slide bar (451) vertical movement through vertical slider, and vertical slider is equipped with switch handle.
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