CN112247446B - Automatic clamping device for spot welding of stainless steel wire mesh pipe fittings - Google Patents

Automatic clamping device for spot welding of stainless steel wire mesh pipe fittings Download PDF

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Publication number
CN112247446B
CN112247446B CN202011083312.5A CN202011083312A CN112247446B CN 112247446 B CN112247446 B CN 112247446B CN 202011083312 A CN202011083312 A CN 202011083312A CN 112247446 B CN112247446 B CN 112247446B
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China
Prior art keywords
clamping
stainless steel
steel wire
wire mesh
welding
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CN202011083312.5A
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CN112247446A (en
Inventor
李明富
柴晓明
吴舸
苏东川
门正兴
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Nuclear Power Institute of China
Chengdu Aeronautic Polytechnic
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Nuclear Power Institute of China
Chengdu Aeronautic Polytechnic
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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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Abstract

The invention discloses an automatic clamping device for spot welding of stainless steel wire mesh pipe fittings, which comprises an installation bottom plate, and a forming device and a vertical movement device which are arranged on the installation bottom plate, wherein the forming device is internally provided with a clamping device, and the vertical movement device is provided with a welding mandrel device; according to the invention, the silk screen blank is accurately positioned and shaped by the shaping device, so that the shaping precision of the material is improved; the clamping device consisting of the plurality of clamping modules is adopted, so that the clamping force is uniformly distributed, the efficiency of taking and placing the workpiece can be improved, the auxiliary time for clamping and welding is shortened, and the production efficiency is improved; structurally, the scheme has the advantages of simple and compact structure, concise action, convenience in manufacturing and low cost.

Description

Automatic clamping device for spot welding of stainless steel wire mesh pipe fittings
Technical Field
The invention relates to the technical field of metal material welding clamps, in particular to an automatic clamping device for spot welding of stainless steel wire mesh pipe fittings.
Background
The stainless steel wire mesh is often used in various occasions such as screening, filtering, shielding, heat dissipation and the like under acid and alkali environmental conditions, and the stainless steel wire mesh is manufactured into a pipe fitting which can be suitable for application in a cylindrical space. Because the stainless steel wire mesh material is lighter, thinner and softer than a metal plate material, the mode of manufacturing the stainless steel wire mesh pipe fitting is mostly finished by a manual welding mode after being manually wound by a simple clamp at present, so that the production efficiency is low, and the forming and welding quality of the pipe fitting can not be well guaranteed. Aiming at special purposes, such as a sewage filter screen, a heat pipe liquid absorption inner core and the like, stainless steel wire meshes with different meshes and thicknesses can be laminated to form a wire mesh pipe fitting, the length of the pipe fitting is longer, the manufacturing is more difficult under the existing manufacturing mode, and the quality is more difficult to ensure.
Disclosure of Invention
Aiming at the problems in the prior art, the automatic clamping device for spot welding of the stainless steel wire mesh pipe fitting provided by the invention solves the problems of low efficiency and poor quality of the wire mesh pipe fitting made of the stainless steel wire mesh in the prior art.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the automatic clamping device for the spot welding of the stainless steel wire mesh pipe fitting comprises an installation bottom plate, a forming device and a vertical movement device, wherein the forming device and the vertical movement device are arranged on the installation bottom plate;
the forming device comprises a bottom plate arranged on the mounting bottom plate, two opposite forming blocks are fixedly arranged on the bottom plate, a gap is formed between the two forming blocks, and a supporting device is arranged between the two forming blocks; the top of the supporting device is used for supporting the stainless steel wire mesh, and the bottom of the supporting device is connected with the bottom plate;
the clamping device is arranged between the two forming blocks and comprises a plurality of clamping modules, a clamping reset module, a connecting shaft pin and a plurality of hinge connecting shafts;
each clamping module comprises a driving rod, the two ends of the driving rod are respectively hinged with a dowel bar, two clamping fingers are respectively hinged on the two dowel bars, the two clamping fingers are L-shaped, the two clamping fingers are arranged in a mirror symmetry mode, the turning points of the clamping fingers are hinged with the dowel bars, one end of the top of each clamping finger is a clamping part, and the other end of each clamping finger is provided with a mounting hole;
the plurality of hinge connecting shafts respectively penetrate through the hinged parts of the driving rods and the dowel bars on the plurality of clamping modules and the mounting holes on the clamping fingers to connect the plurality of clamping modules into a whole; the supporting device is positioned between the integral clamping modules;
the clamping reset module is arranged at the end part of the forming device and comprises a base fixedly arranged on the bottom plate, a guide pillar is arranged on the base, a reset slide block is arranged on the guide pillar, and an upper cross beam with a contact is arranged at the top of the reset slide block; a return spring is arranged between the return sliding block and the base; the reset sliding block is hinged with the middle part of the driving rod on the clamping module at the outermost side through a connecting shaft pin;
the welding mandrel device comprises an installation flange, one end of the installation flange is fixedly connected with the vertical movement device, and the other end of the installation flange is provided with an electrode bar for welding the stainless steel wire mesh pipe fitting; the vertical movement device is used for driving the welding mandrel device to move up and down linearly; the mounting flange is in contact with the contacts.
When the welded stainless steel wire mesh pipe fitting is manufactured, the vertical movement device drives the welding mandrel device to enable a stainless steel wire mesh which is placed at the top of the forming device in advance to complete lower semi-cylindrical surface forming in the forming device, a plurality of clamping modules in the clamping device clamp the stainless steel wire mesh to achieve upper semi-cylindrical surface forming and clamp the pipe fitting to be welded, the welding mandrel device completes welding of the lap joint of the stainless steel wire mesh pipe fitting, after welding is completed, the welding mandrel device moves upwards under the action of the vertical movement device, the clamping modules in the clamping device open, and the stainless steel wire mesh pipe fitting is separated from the forming device; and finishing the manufacture of the stainless steel wire mesh pipe fitting.
Furthermore, the two clamping fingers on each clamping module are different in length, wherein one clamping finger is a long clamping finger, and the other clamping finger is a short clamping finger. The different setting of two centre gripping finger length can make the angle that stainless wire net convoluteed different, and during stainless wire net clamping state, what guarantee the face of cylinder waits that the welded junction batching overlap joint is neat on the stainless wire net, has guaranteed the overlap joint firm in connection of stainless wire net pipe fitting, has promoted the welding quality of stainless wire net pipe fitting.
Further, as a specific implementation manner of the supporting device, the supporting device comprises a pushing piece block, a plurality of springs are arranged at the bottom of the pushing piece block, the pushing piece block is connected with the bottom plate through the plurality of springs, and a plurality of guide posts are arranged between the pushing piece block and the bottom plate; the top of the pushing block is provided with a rubber plate, and the top surface of the rubber plate is an arc curved surface; the lengths of the pushing piece block and the rubber plate are matched with the length of the forming block. The top surface of the rubber plate is used for forming the lower cylindrical surface of the stainless steel wire mesh pipe fitting.
Furthermore, the welding mandrel device also comprises a hollow mandrel, an electrode fixing column and an end cover; the hollow core shaft is of a hollow cylindrical structure with openings at two ends, one end of the hollow core shaft is fixedly connected with the mounting flange, and the top of the hollow core shaft is provided with a notch; the electrode bar and the electrode fixing column are arranged in the hollow mandrel, the arc outer surface of the electrode bar is exposed out of the gap, and the outer arc line of the electrode bar is tangent to the outer arc line of the hollow mandrel; the electrode fixing column is tightly contacted with the electrode bar; the end cover is fixedly arranged in the other end port of the hollow mandrel. The electrode bar is used for welding the lap joint of the cylindrical surfaces on the stainless steel wire mesh pipe fittings; the pressed hollow core shaft is contacted with the rubber plate and used for forming the lower cylindrical surface of the stainless steel wire mesh pipe fitting; the electrode fixing column is used for fixing the position of the electrode bar in the hollow core shaft, so that the outer circular surface of the electrode bar is ensured to leak out of the notch in the hollow core shaft, and the electrode bar part leaking out of the notch is used for welding the lap joint of the upper half cylindrical surface of the stainless steel wire mesh.
Furthermore, the hollow core shaft, the electrode fixing column and the end cover are all made of insulating materials.
Furthermore, the electrode bar is made of pure copper, the electrode bar made of pure copper has good conductivity, and the welding quality of the stainless steel wire mesh pipe fitting can be improved; the mounting flange is made of aluminum alloy or structural steel, so that the strength of the mounting flange can be ensured, and the service life of the mounting flange is prolonged.
Further, as a specific embodiment of the vertical movement device, the vertical movement device includes a base fixedly disposed on the mounting base plate, and a vertical linear guide rail and a slider sliding up and down in the linear guide rail are disposed on the base; a transmission lead screw which is threaded with the slide block is also arranged in the base; one end of the transmission screw rod is provided with a motor, and the motor is connected with the transmission screw rod through a coupler; the slider is provided with a mounting plate fixedly connected with the mounting flange.
Furthermore, the vertical movement device also comprises a controller, and the motor is connected with the controller; photoelectric switches are respectively arranged at the upper limit position and the lower limit position of the linear guide rail, and the two photoelectric switches are connected with the motor through a controller; and a shielding contact piece for shielding the photoelectric switch is arranged on the side surface of the sliding block. The photoelectric switch and the shielding contact piece are arranged, when the shielding contact piece shields the photoelectric switch, the controller controls the motor to stop working, the sliding block is prevented from being damaged by the over travel of the sliding block, and therefore the purpose of protecting the vertical movement device is achieved.
The invention has the beneficial effects that: according to the invention, the silk screen blank is accurately positioned and shaped by the shaping device, so that the shaping precision of the material is improved; the clamping device consisting of the plurality of clamping modules is adopted, the clamping force is uniformly distributed, the workpiece taking and placing efficiency can be improved, the clamping and welding auxiliary time is shortened, and the production efficiency is improved; structurally, the scheme has the advantages of simple and compact structure, concise action, convenience in manufacturing and low cost.
Drawings
Fig. 1 is a structural schematic diagram of an initial state of the automatic clamping device for spot welding of the stainless steel wire mesh pipe fitting.
Fig. 2 is a schematic structural view of the automatic clamping device for spot welding of the stainless steel wire mesh pipe fitting when clamping a workpiece.
FIG. 3 is a schematic view of the forming apparatus.
Fig. 4 is a schematic structural view of the opened state of the clamping device.
Fig. 5 is a schematic structural view of the closed state of the clamping device.
Fig. 6 is a schematic structural view of the clamping module.
Fig. 7 is a schematic structural diagram of the reset module.
Fig. 8 is a perspective view of the welding mandrel device.
Fig. 9 is a perspective view of the vertical movement device.
Fig. 10 is a schematic diagram of the structure of an exploded view of a vertical motion device.
Wherein, 1, installing a bottom plate; 2. a forming device; 21. a base plate; 22. a spring; 23. a pushing block; 24. a rubber plate; 25. a guide post; 26. forming a block; 3. a clamping device; 31. a clamping module; 311. a drive rod; 312. a dowel bar; 313. clamping fingers; 32. a hinge connecting shaft; 33. connecting a shaft pin; 34. a clamping reset module; 341. a contact; 342. resetting the sliding block; 343. a guide post; 344. a base; 345. a return spring; 346. an upper cross beam; 4. welding a mandrel device; 41. installing a flange; 42. a hollow mandrel; 43. an electrode fixing column; 44. an electrode rod; 45. an end cap; 5. a vertical movement device; 51. a base; 52. a linear guide rail; 53. a slider; 54. a drive screw; 55. a motor; 56. mounting a plate; 57. a photoelectric switch; 58. the contact sheet is shielded.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 to 9, the automatic clamping device for spot welding of stainless steel wire mesh pipe fittings provided by the invention comprises an installation base plate 1, and a forming device 2 and a vertical movement device 5 which are arranged on the installation base plate 1, wherein a clamping device 3 is arranged in the forming device 2, and a welding mandrel device 4 is arranged on the vertical movement device 5;
as shown in fig. 1, 9 and 10, the vertical movement device 5 includes a base 51 fixedly disposed on the mounting base plate 1, a vertical linear guide rail 52 and a slider 53 sliding up and down in the linear guide rail 52 are disposed on the base 51; a transmission screw 54 which is threaded with the slide block 53 is also arranged in the base 51; one end of the transmission screw 54 is provided with a motor 55, and the motor 55 is connected with the transmission screw through a coupler; starting a motor 55, wherein the motor 55 drives a transmission lead screw 54 to rotate, the rotating lead screw drives a sliding block 53 to move up and down along a linear guide rail 52, for example, the motor 55 rotates clockwise, the sliding block 53 moves down, the motor 55 rotates counterclockwise, the sliding block 53 moves up, a mounting plate 56 for being fixedly connected with the welding mandrel device 4 is arranged on the sliding block 53, and then the welding mandrel device 4 is driven to move up and down linearly;
the vertical movement device 5 further comprises a controller, and the motor 55 is connected with the controller; photoelectric switches 57 are respectively arranged at the upper limit position and the lower limit position of the linear guide rail 52, and the two photoelectric switches 57 are connected with the motor 55 through a controller; a shielding contact piece 58 for shielding the photoelectric switch 57 is provided on the side surface of the slider 53. When the shielding contact 58 shields the photoelectric switch 57, the controller controls the motor 55 to stop working, so as to prevent the slider 53 from over-travel to damage the vertical moving device 5, thereby achieving the purpose of protecting the vertical moving device 5.
As shown in fig. 1 and 8, the welding mandrel device 4 comprises a mounting flange 41, an electrode rod 44, a hollow mandrel 42, an electrode fixing column 43 and an end cover 45; the materials of the hollow mandrel 42, the electrode fixing column 43 and the end cover 45 are all insulating materials. The electrode bar 44 is made of pure copper, the electrode bar 44 made of pure copper has good conductivity, and the welding quality of the stainless steel wire mesh pipe fitting can be improved; the mounting flange 41 is made of aluminum alloy or structural steel, so that the strength of the mounting flange 41 can be ensured, and the service life of the mounting flange 41 can be prolonged. The welding mandrel device 4 is fixedly connected with the mounting plate 56 through a mounting flange 41;
the hollow core shaft 42 is a hollow cylindrical structure with openings at two ends, one end of the hollow core shaft 42 is fixedly connected with the mounting flange 41, and the top of the hollow core shaft 42 is provided with a notch; the electrode bar 44 and the electrode fixing column 43 are both arranged in the hollow mandrel 42, the arc outer surface of the electrode bar 44 is exposed through the gap, and the outer arc line of the electrode bar 44 is tangent to the outer arc line of the hollow mandrel 42; the electrode fixing column 43 is in close contact with the electrode bar 44; the end cap 45 is fixedly disposed in the other end port of the hollow core shaft 42. The electrode bar 44 is used for welding the lap joint of the cylindrical surfaces on the stainless steel wire mesh pipe fitting; the hollow mandrel 42 pressed downwards is used for forming the lower cylindrical surface of the stainless steel wire mesh pipe fitting; the electrode fixing column 43 is used for fixing the position of the electrode bar 44 in the hollow mandrel 42, so as to ensure that the outer circular surface of the electrode bar 44 leaks out of the notch on the hollow mandrel 42, and the part of the electrode bar 44 leaking out of the notch is used for welding the lap joint of the upper semi-cylindrical surface of the stainless steel wire mesh.
As shown in fig. 1 and 3, the forming device 2 includes a bottom plate 21 disposed on the installation bottom plate 1, two opposite forming blocks 26 are fixedly disposed on the bottom plate 21, a gap is formed between the two forming blocks 26, and a supporting device is disposed between the two forming blocks 26; the top of the supporting device is used for supporting the stainless steel wire mesh, and the bottom of the supporting device is connected with the bottom plate 21;
as a specific embodiment of the supporting device, the supporting device includes a pushing block 23, a plurality of springs 22 are disposed at the bottom of the pushing block 23, the pushing block 23 is connected to the bottom plate 21 through the plurality of springs 22, and a plurality of guide posts 25 are disposed between the pushing block 23 and the bottom plate 21; the top of the pushing piece block 23 is provided with a rubber plate 24, and the top surface of the rubber plate 24 is an arc curved surface; the length of the pusher block 23 and the rubber sheet 24 matches the length of the forming block 26. The top surface of the rubber plate 24 is used for forming the lower cylindrical surface of the stainless steel wire mesh pipe fitting.
As shown in fig. 4 to 7, the clamping device 3 is disposed between two forming blocks 26, and the clamping device 3 includes a plurality of clamping modules 31, a clamping reset module 34, a connecting shaft pin 33, and a plurality of hinge connecting shafts 32;
as shown in fig. 6, each clamping module 31 includes a driving rod 311, two ends of the driving rod 311 are respectively hinged with a dowel bar 312, two dowel bars 312 are respectively hinged with a clamping finger 313, the two clamping fingers 313 are both L-shaped, the two clamping fingers 313 are arranged in mirror symmetry, the inflection point of the clamping finger 313 is hinged with the dowel bar 312, one end of the top of the clamping finger 313 is a clamping part, and the other end is provided with a mounting hole;
as shown in fig. 4 and 5, the plurality of hinge connecting shafts 32 respectively pass through the hinge joints of the driving rods 311 and the dowel bars 312 on the plurality of clamping modules 31 and the mounting holes on the clamping fingers 313 to connect the plurality of clamping modules 31 into a whole; the support means are located between the integral clamping modules 31; the two clamping fingers 313 on each clamping module 31 are different in length, wherein one clamping finger 313 is long, and the other clamping finger 313 is short. The different setting of two centre gripping fingers 313 length can make the angle that stainless wire net convoluteed different, and during stainless wire net clamping state, the department of treating welding of the face of cylinder on the assurance stainless wire net batching overlap joint is neat, has guaranteed the overlap joint firm in connection of stainless wire net pipe fitting, has promoted the welding quality of stainless wire net pipe fitting.
As shown in fig. 7, the clamping and resetting module 34 is disposed at the end of the forming device 2, the clamping and resetting module 34 includes a base 344 fixedly disposed on the bottom plate 21, a guide post 343 is disposed on the base 344, a resetting slider 342 is disposed on the guide post 343, and an upper cross beam 346 having a contact 341 is disposed on the top of the resetting slider 342; a return spring 345 is arranged between the return slide block 342 and the base 344; the reset slider 342 is hinged to the middle of the driving rod 311 of the outermost clamping module 31 through the connecting shaft pin 33.
The process of the device for manufacturing the stainless steel wire mesh pipe fitting is as follows: firstly, placing a stainless steel single-layer or multi-layer wire mesh which is blanked in advance on the tops of two forming blocks 26, then starting a motor 55 on a vertical movement device 5, wherein the motor 55 rotates clockwise to drive a welding mandrel device 4 to move linearly downwards, and in the downward movement process of the welding mandrel device 4, a hollow mandrel 42 on the welding mandrel device 4 presses the stainless steel wire mesh on the tops of the two forming blocks 26 into a forming device 2, so that the stainless steel wire mesh is pressed to be tightly contacted with the top surface of a rubber plate 24, the hollow mandrel 42 continues to move downwards, and the stainless steel wire mesh is gradually formed and compresses a spring 22 through a pushing block 23;
meanwhile, in the process that the welding mandrel device 4 moves downwards, the mounting flange 41 on the welding mandrel device 4 is in contact with the reset module in the clamping device 3, the mounting flange 41 is in contact with and presses down the contact 341, the pressure is transmitted to the reset slider 342, the reset slider 342 moves downwards, the reset slider 342 pushes the driving rod 311 to move downwards at the same time through the connecting shaft pin 33, the driving rod 311 pulls the clamping module dowel bar 312 to drive the clamping finger 313 to rotate around the shaft, the cylindrical surface on the stainless steel wire mesh pipe fitting is gripped and formed, and two ends of the stainless steel wire mesh pipe fitting are lapped on the excircle of the hollow mandrel 42; the electrode bar 44 on the welding mandrel device 4 is electrified to complete the welding work of the lap joint of the two ends of the stainless steel wire mesh pipe fitting; after the welding is finished, the motor 55 on the vertical movement device 5 rotates anticlockwise to drive the welding mandrel device 4 to move upwards, the pushing block 23 moves upwards along with the welding mandrel device 4 under the action of the restoring force of the spring 22 to push the pipe fitting out of the upper surface of the forming block 26, and the manufacturing of the stainless steel wire net pipe fitting is automatically finished.

Claims (9)

1. The automatic clamping device for the spot welding of the stainless steel wire mesh pipe fitting comprises an installation base plate (1) and is characterized by further comprising a forming device (2) and a vertical movement device (5) which are arranged on the installation base plate (1), wherein a clamping device (3) used for clamping the stainless steel wire mesh pipe fitting is arranged in the forming device (2), and a welding mandrel device (4) is arranged on the vertical movement device (5);
the forming device (2) comprises a bottom plate (21) arranged on the mounting bottom plate (1), two opposite forming blocks (26) are fixedly arranged on the bottom plate (21), a gap is formed between the two forming blocks (26), and a supporting device is arranged between the two forming blocks (26); the top of the supporting device is used for supporting the stainless steel wire mesh, and the bottom of the supporting device is connected with a bottom plate (21);
the clamping device (3) is arranged between the two forming blocks (26); the clamping device (3) comprises a plurality of clamping modules (31), a clamping reset module (34), a connecting shaft pin (33) and a plurality of hinge connecting shafts (32); each clamping module (31) comprises a driving rod (311), the two ends of each driving rod (311) are respectively hinged with a dowel bar (312), each dowel bar (312) is respectively hinged with a clamping finger (313), each clamping finger (313) is L-shaped, the two clamping fingers (313) are arranged in a mirror symmetry mode, the turning points of the clamping fingers (313) are hinged with the dowel bars (312), one end of the top of each clamping finger (313) is a clamping part, and the other end of each clamping finger (313) is provided with a mounting hole;
the hinge connecting shafts (32) respectively penetrate through the hinged parts of the driving rods (311) and the dowel bars (312) on the clamping modules (31) and the mounting holes on the clamping fingers (313) to connect the clamping modules (31) into a whole; the supporting device is positioned in the middle of the integral clamping module (31);
the clamping reset module (34) is arranged at the end part of the forming device (2); the clamping reset module (34) is connected with the clamping device (3), and the clamping reset module (34) is used for resetting the clamping device (3);
the welding mandrel device (4) comprises an installation flange (41), one end of the installation flange (41) is fixedly connected with the vertical movement device (5), and the other end of the installation flange is provided with an electrode bar (44) for welding a stainless steel wire mesh pipe fitting; the vertical movement device (5) is used for driving the welding mandrel device (4) to do vertical linear movement.
2. The automatic clamping device for the spot welding of the stainless steel wire mesh pipe fittings as claimed in claim 1, wherein the clamping and resetting module (34) comprises a base (344) fixed on a bottom plate (21), a guide pillar (343) is arranged on the base (344), a resetting slider (342) is arranged on the guide pillar (343), and an upper cross beam (346) with a contact (341) is arranged at the top of the resetting slider (342); a return spring (345) is arranged between the return sliding block (342) and the base (344); the reset sliding block (342) is hinged with the middle part of the driving rod (311) on the clamping module (31) at the outermost side through the connecting shaft pin (33); a mounting flange (41) is in contact with the contact (341).
3. Automatic clamping device for spot welding of stainless steel wire mesh tubes according to claim 2, characterized in that the two clamping fingers (313) on each clamping module (31) are of different length.
4. The automatic clamping device for the spot welding of the stainless steel wire mesh pipe fitting as claimed in claim 1, wherein the supporting device comprises a pushing piece (23), a plurality of springs (22) are arranged at the bottom of the pushing piece (23), the pushing piece (23) is connected with the bottom plate through the plurality of springs (22), and a plurality of guide columns (25) are arranged between the pushing piece (23) and the bottom plate (21); the top of the pushing piece (23) is provided with a rubber plate (24), and the top surface of the rubber plate (24) is an arc curved surface; the lengths of the pushing piece block (23) and the rubber plate (24) are matched with the length of the forming block (26).
5. The automatic clamping device for the spot welding of the stainless steel wire mesh pipe fittings as claimed in claim 1, wherein the welding mandrel device (4) further comprises a hollow mandrel (42), an electrode fixing column (43) and an end cover (45); the hollow core shaft (42) is of a hollow cylindrical structure with openings at two ends, one end of the hollow core shaft (42) is fixedly connected with the mounting flange (41), and the top of the hollow core shaft (42) is provided with a notch; the electrode bar (44) and the electrode fixing column (43) are arranged in the hollow mandrel (42), the arc outer surface of the electrode bar (44) is exposed through the notch, and the outer arc line of the electrode bar (44) is tangent to the outer arc line of the hollow mandrel (42); the electrode fixing column (43) is tightly contacted with the electrode bar (44); the end cover (45) is fixedly arranged in the other end port of the hollow mandrel (42).
6. The automatic clamping device for the spot welding of the stainless steel wire mesh pipe fittings as claimed in claim 5, wherein the hollow core shaft (42), the electrode fixing column (43) and the end cover (45) are all made of insulating materials.
7. The automatic clamping device for spot welding of stainless steel wire mesh pipes as claimed in claim 5, wherein the material of the electrode rod (44) is pure copper; the mounting flange (41) is made of aluminum alloy or structural steel.
8. The automatic clamping device for the spot welding of the stainless steel wire mesh pipe fittings as claimed in claim 1, wherein the vertical movement device (5) comprises a base (51) fixedly arranged on the mounting base plate (1), and a vertical linear guide rail (52) and a sliding block (53) sliding up and down in the linear guide rail (52) are arranged on the base (51);
a transmission lead screw (54) which is threaded with the sliding block (53) is also arranged in the base (51); one end of the transmission screw rod (54) is provided with a motor (55), and the motor (55) is connected with the transmission screw rod through a coupler; and the sliding block (53) is provided with a mounting plate (56) which is fixedly connected with the mounting flange (41).
9. The automatic clamping device for spot welding of stainless steel wire mesh pipes as claimed in claim 8, characterized in that the vertical movement device (5) further comprises a controller, the motor (55) being connected to the controller;
photoelectric switches (57) are respectively arranged at the upper limit position and the lower limit position of the linear guide rail (52), and the two photoelectric switches (57) are connected with a motor (55) through a controller; a shielding contact piece (58) for shielding the photoelectric switch (57) is provided on the side surface of the slider (53).
CN202011083312.5A 2020-10-12 2020-10-12 Automatic clamping device for spot welding of stainless steel wire mesh pipe fittings Active CN112247446B (en)

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Application Number Priority Date Filing Date Title
CN202011083312.5A CN112247446B (en) 2020-10-12 2020-10-12 Automatic clamping device for spot welding of stainless steel wire mesh pipe fittings

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Application Number Priority Date Filing Date Title
CN202011083312.5A CN112247446B (en) 2020-10-12 2020-10-12 Automatic clamping device for spot welding of stainless steel wire mesh pipe fittings

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CN112247446A CN112247446A (en) 2021-01-22
CN112247446B true CN112247446B (en) 2022-10-21

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