CN115846839B

CN115846839B - Resistance spot welder

Info

Publication number: CN115846839B
Application number: CN202310126370.9A
Authority: CN
Inventors: 洪政平; 张宏亮; 周悦涛; 杨志刚
Original assignee: Tianjin Nuoruixin Precision Electronic Co ltd
Current assignee: Tianjin Nuoruixin Precision Electronic Co ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-05-16
Anticipated expiration: 2043-02-17
Also published as: CN115846839A

Abstract

The application relates to a resistance spot welder relates to the technical field of spot welders, including frame, support, lift cylinder, be provided with the bar copper on the support, be provided with loading attachment on the frame, loading attachment includes: the driving sleeve is rotatably arranged on the machine base; the two support tables are circumferentially arranged on the driving sleeve around the axis of the driving sleeve; the driving assembly is arranged on the machine base, is connected with the driving sleeve and is used for driving the two supporting tables to rotate; and the charging mechanisms are arranged on the two supporting tables and are used for installing weldments. This application is through the welding with changing weldment and weldment simultaneously, after the welding is accomplished, lift cylinder starts and drives the bar copper and move upwards, then drive assembly starts and drives charging mechanism and rotate, consequently can continue to weld the weldment of welding completion simultaneously to saved the weldment welding time spent, improved the production efficiency and the quality of spot welder simultaneously.

Description

Resistance spot welder

Technical Field

The application relates to the technical field of spot welding machines, in particular to a resistance spot welding machine.

Background

The resistance welding machine is welding equipment which performs welding by using a resistance heating principle, and particularly has wider application in the aspect of automobile parts. The resistance welder can be classified into different types according to different purposes and requirements and is classified according to welding methods, and comprises a spot welder, a seam welder, a projection welder, a butt welder and the like.

In the prior art, the invention of application publication number CN110340510A can be consulted, a resistance spot welder comprises a frame, the cylinder of vertical setting is installed at the top of frame, the tip of cylinder output shaft is provided with the upper bracket and the upper bracket sets up in the below of cylinder, the inside of upper bracket can be dismantled and be connected with the upper copper bar of vertical setting, one side of frame is connected with the lower support in the below sliding connection of upper bracket, the inside of lower support can be dismantled and be connected with the lower copper bar of vertical setting and go up the axis collineation of copper bar and lower copper bar, the below of lower support is provided with elastic component and elastic component installs in the frame, the bottom of lower support supports at the top of elastic component. The invention has the effect that the upper copper bar and the lower copper bar are not easy to deform when the upper copper bar descends to perform spot welding work.

The weldments are produced in batches, but the spot welder is used for manually placing the weldments on the lower copper bar in production, then the upper copper bar moves downwards to be in contact with the weldments, then the pressure is applied, the weldments to be welded are continuously replaced by taking down the welded weldments, so that the time spent for welding each weldment is long, the production efficiency of the spot welder is reduced, the welding positions are placed by means of manual experience, the accuracy of the welding positions is reduced, and the production quality of the spot welder is reduced.

Disclosure of Invention

In order to improve the production efficiency and quality of the spot welder, the application provides a resistance spot welder.

The application provides a resistance spot welder adopts following technical scheme:

the utility model provides a resistance spot welder, includes the frame, sets up the lower bar copper on the frame and slides the support of setting on the frame, be provided with the lift cylinder of being connected with the support on the frame, be provided with the upper bar copper corresponding with lower bar copper on the support, be provided with the loading attachment who is used for installing the weldment on the frame, loading attachment includes:

the driving sleeve is rotatably arranged on the machine base;

the two supporting tables are arranged on the driving sleeve in a circumferential array around the axis of the driving sleeve;

the driving assembly is arranged on the machine base, is connected with the driving sleeve and is used for driving the two supporting tables to rotate in a reciprocating manner;

and the charging mechanisms are arranged on the two supporting tables and are used for installing weldments.

By adopting the technical scheme, the weldment is installed on the charging mechanism positioned on the outer side of the upper copper rod, the weldment on one charging mechanism is contacted with the lower copper rod, the lifting cylinder is started to drive the upper copper rod to move downwards to press the weldment, and then the welding is carried out, so that when the weldment on the charging mechanism positioned on the outer side is replaced, the weldment on the other charging mechanism is being welded, after the welding is finished, the lifting cylinder is started to drive the upper copper rod to move upwards, then the driving assembly is started to drive the driving sleeve to rotate, the driving sleeve is rotated to drive one supporting table to rotate to the outer side of the upper copper rod, and the other supporting table is rotated to the position right below the upper copper rod, so that the two supporting tables are rotated, then the lifting cylinder is started to drive the upper copper rod to move downwards to be welded, then the weldment which is positioned on the outer side and welded is finished is replaced, and after the welding is finished, the lifting cylinder is started to drive the two supporting tables to rotate back and forth, the two supporting tables are driven to realize the reciprocating rotation, so that the welding and the weldment are simultaneously carried out, the time spent by the welding and the weldment are saved, and the production efficiency of the welding machine is improved, and the production quality is improved through the mounting mechanism of the weldment.

Optionally, two vertical grooves are formed in the inner side wall of the driving sleeve in a circumferential array around the axis of the driving sleeve, and the two vertical grooves are communicated through two spiral grooves which are mutually intersected and spiral;

the drive assembly includes:

the driving rod is arranged on the support and is glidingly arranged on the driving sleeve in a penetrating manner;

the driving beads are rotatably arranged on the driving rod, can be slidably arranged on the two vertical grooves and the two spiral grooves and are used for driving the two supporting tables to reciprocally rotate, and meanwhile, when the upper copper rod is in contact with a welding piece, the driving beads are positioned on the vertical grooves and below the spiral grooves, and a plurality of mounting grooves are formed in the joint of the two vertical grooves and the two spiral grooves;

the guide plates are provided with a plurality of guide plates which are respectively arranged on the plurality of mounting grooves and protrude out of the mounting grooves, and the guide plates are elastic and used for stopping the driving beads from continuously moving back to the vertical grooves or the spiral grooves which are originally moved when the driving beads move.

By adopting the technical scheme, when the lifting cylinder is started to drive the support and the upper copper rod to move downwards to be in contact with the weldment, the driving bead is positioned on the vertical groove and below the spiral groove, so that the driving sleeve and the driving rod cannot rotate, after welding is finished, the lifting cylinder is started to drive the support, the upper copper rod, the driving rod and the driving bead to move upwards, the driving bead moves into the spiral groove from the vertical groove under the action of the guide plate, then the driving bead moves upwards continuously, the driving sleeve rotates under the cooperation of the driving bead and the spiral groove, the driving sleeve rotates to drive the two support tables and the charging mechanism to rotate, and then the driving bead slides and is installed on the other vertical groove, so that the driving rod and the driving sleeve cannot rotate, the driving rod and the driving bead move upwards continuously, and the weldment on the charging mechanism which is turned to the outer side of the upper copper rod can be replaced;

then the lifting cylinder is started to drive the support, the upper copper rod and the driving beads to move downwards, the driving beads move downwards and are blocked from entering the spiral groove under the action of the guide plate to move downwards to the bottom end of the vertical groove directly, and the rotating directions are opposite after the support is welded, so that the driving sleeve rotates back and forth in a reciprocating manner, when the support and the driving beads move downwards, the two supporting tables and the charging mechanism cannot rotate, the time for replacing welding parts is greatly prolonged, the conditions that the time is too short and the welding parts are poor in installation precision and extend to untimely installation are reduced, and therefore the production efficiency and quality of the spot welder are improved;

and the rotation of two supporting tables and a charging mechanism can be realized without other driving energy, so that the energy is saved, the rotation of the two supporting tables and the movement of the upper copper rod can be kept synchronous, the probability of collision between the upper copper rod and the supporting tables caused by disorder of the two supporting tables is reduced, and the production efficiency and quality of the spot welder are further improved.

Optionally, the charging mechanism includes:

the sliding pressing plate is vertically arranged on the driving sleeve in a sliding manner, is propped against the weldment for positioning, is connected with the driving sleeve through the connecting assembly, and drives the sliding pressing plate to be close to or far away from the weldment through the connecting assembly when the driving sleeve rotates;

the two positioning assemblies are arranged on the supporting table and used for positioning the horizontal position of the welding part.

Through adopting above-mentioned technical scheme, after the weldment welding is accomplished, lift cylinder drives the support and moves upwards and drive the drive sleeve and rotate, and the drive sleeve rotates and drives the clamp plate of sliding through coupling assembling and keep away from the weldment, then can take off the weldment, then change the weldment, fix a position the weldment through locating component, and lift cylinder starts and drive the support and move down after, the drive sleeve gyration drives the clamp plate of sliding and moves down and support and press and fix a position on the weldment, thereby realize the weldment and fix a position, and automatic realization slide clamp plate is fixed a position the weldment along with the removal of support, thereby keep the synchronism of weldment installation and follow-up processing, therefore further improved the production efficiency and the quality of spot welder.

Optionally, the connection assembly includes:

the first gear is arranged on the outer side wall of the driving sleeve;

the driving screw rod is rotatably arranged on the machine base and is in threaded connection with the sliding pressing plate;

and the second gear is arranged on the driving screw rod and meshed with the first gear.

Through adopting above-mentioned technical scheme, the drive sleeve rotates and drives first gear and rotate, and first gear rotates and drives the second gear and rotate, and the second gear rotates and drives the drive lead screw and rotate, and the drive lead screw rotates and drives the clamp plate that slides and remove to this realizes that the drive sleeve rotates and drives the clamp plate that slides and remove.

Optionally, the positioning assembly includes:

the positioning frame is arranged on the supporting table and provided with a feed inlet;

the positioning plate is rotatably arranged on the supporting table through the rotating shaft, blocks the feeding hole and is matched with the positioning frame to be abutted against a plurality of side walls of the weldment;

the pushing block is arranged on the positioning plate and used for pushing the weldment to move upwards and away from the supporting table, and when the weldment is placed on the supporting table, the pushing block is contacted with the weldment;

the inserting rod is arranged on the positioning plate in a sliding manner and is inserted and installed on the positioning frame for positioning;

and the limiting ring is arranged on the inserted link and used for blocking the inserted link from being separated from the positioning plate.

By adopting the technical scheme, the welding piece is contacted with the inner side wall of the positioning frame through the feeding hole, then the welding piece is pushed to move downwards to be abutted against the mounting table, the pushing block is pushed to rotate in the downward moving process of the welding piece, and the positioning plate is driven to abut against the welding piece and the positioning frame by the rotation of the pushing block, so that the positioning plate and the positioning frame are matched with each other to position the welding piece, and then the inserting rod is pushed to be inserted and mounted on the positioning frame for positioning;

when the weldment is taken out, the inserting rod is pulled to be separated from the positioning frame, the limiting ring is abutted to the positioning plate to position the inserting rod, then the positioning plate is rotated by pressing one end of the inserting rod away from the positioning plate, the positioning plate rotates to drive the pushing block to rotate, so that the pushing block rotates to drive one side of the weldment, which is close to the positioning plate, to move upwards to be separated from the mounting table, a gap which is convenient for a worker to stretch in is formed, and then the weldment can be taken down, so that convenience in the process of installing and taking down the weldment is improved, and the production efficiency of the spot welder is improved.

Optionally, two supporting grooves which incline downwards and are arranged on the supporting table, the bottom ends of the supporting grooves face to one side close to the supporting table, the rotating shaft is rotatably arranged on the two supporting grooves, and the two supporting grooves are respectively provided with a maintaining component which is connected with the rotating shaft and is used for maintaining the feeding port to be in an open state.

By adopting the technical scheme, when the positioning plate is rotated to drive the pushing block to rotate, the positioning plate and the pushing block are subjected to the extrusion force of the weldment when rotating, so that the rotating shaft, the positioning plate and the pushing block are pushed to incline upwards and away from the weldment, and the positioning plate is away from the weldment to avoid the position, thereby reducing the probability of damage of the positioning plate to the weldment and improving the production quality of the spot welder;

the upward movement of the pushing block increases the upward rotation angle of one side of the weldment close to the positioning plate, increases the gap formed between the weldment and the supporting table, improves the convenience when the weldment is taken down, contacts a new weldment with the inner side wall of the positioning frame through the feeding port after the weldment is taken down, then pushes the weldment to move downwards, contacts the pushing block, pushes the positioning plate, the pushing block and the rotating shaft to move downwards along with the downward movement of the weldment, and rotates simultaneously; when the weldment contacts the mounting table, the positioning plate is abutted against the weldment and is matched with the positioning frame to position the weldment, and then the inserted rod is inserted and mounted on the positioning frame to position the positioning plate, so that convenience in mounting the weldment is improved, and production efficiency of the spot welder is further improved;

the maintenance component can also push the push block and the locating plate to move upwards and away from the weldment, so that the production quality of the spot welder is further improved, and the maintenance component is used for maintaining the position of the locating plate, so that the feed inlet is in an open state, the probability that the locating plate moves downwards under the action of gravity to block the feed inlet is reduced, the convenience in installing the weldment is improved, and the production efficiency and quality of the spot welder are improved simultaneously.

Optionally, the maintenance assembly includes:

the maintaining blocks are slidably arranged on the supporting grooves, and the rotating shafts are rotatably arranged on the two maintaining blocks;

the maintaining spring is arranged on the maintaining block and connected with the supporting groove, and when the welding piece is propped against the pushing block, the maintaining spring is in a compressed state.

By adopting the technical scheme, the welding piece moves downwards to push the pushing block to move, the pushing block compresses the maintaining spring, then the locating plate is fixed to fix the position of the pushing block, when the welding piece needs to be taken down, the locating plate is opened, the maintaining spring pushes the maintaining block to move upwards, so that the pushing block moves upwards and rotates simultaneously, and when the welding piece is taken down, the maintaining spring maintains the position of the locating plate, thereby reducing the blocking probability of the feed inlet and improving the production efficiency of the spot welder.

Optionally, the base is provided with the seat that slides along the support slip direction, lower bar copper sets up on the seat that slides, be provided with the lifting cylinder of being connected with the seat that slides on the base.

Through adopting above-mentioned technical scheme, during the welding, lifting cylinder and lift cylinder move simultaneously for go up the bar copper and be close to each other simultaneously and contact with the weldment down, thereby make go up bar copper and lower bar copper atress balanced, reduced the probability that goes up bar copper and lower bar copper damaged, also reduced down bar copper and weldment or brace table and take place the probability of contact even striking simultaneously, improved spot welder's production efficiency and quality.

Optionally, the drive is sheathe in and is located two brace tables department and all is provided with the mount table, go up the bar copper and move the drive pearl and move to the helicla flute when carrying out the position of keeping away in many welding process, two the brace table level slides and sets up on the mount table, be provided with the removal subassembly that the drive brace table removed on the mount table.

Through adopting above-mentioned technical scheme, the support moves down and drives the copper bar and move down and weld the back of accomplishing, the support moves up and drives the copper bar and move up to the clamp plate top that slides, and the support moves up and drives the drive pearl and move up to the helicla flute in, make the drive cover take place to rotate, thereby make the clamp plate that slides move up and break away from with the weldment, then drive assembly starts and drives brace table and weldment and remove, move and accomplish the back support and move down and make the drive pearl move from the helicla flute to erect in the inslot, make the clamp plate that slides move down and press to the weldment on and fix a position, and support and last copper bar continue to move down and weld, thereby weld in order to a plurality of positions on the weldment, slide the clamp plate and the weldment breaks away from when moving moreover, the probability that the weldment removed the clamp plate that slides damages the weldment has been reduced, consequently further improved spot welder's production efficiency and quality.

Optionally, the moving assembly includes:

the servo screw rod is rotatably arranged on the mounting table and is in threaded connection with the supporting table;

and the servo motor is arranged on the mounting table and is connected with the servo screw rod.

By adopting the technical scheme, the servo motor is started to drive the servo screw rod to rotate, and the servo screw rod rotates to drive the supporting table and the weldment to move.

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

through the welding with changing weldment and weldment simultaneously, after the welding is accomplished, lift cylinder starts and drives the copper bar and shift up, then drive assembly starts and drives charging mechanism reciprocating rotation, consequently can continue to weld the weldment of changing the welding completion simultaneously, thereby saved the weldment welding time spent, improved the production efficiency of spot welder, simultaneously through charging mechanism installation weldment, thereby improved the accuracy nature of weldment welding position, consequently improved the production efficiency and the quality of spot welder simultaneously.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic view of the structure of the charging device of the present application;

FIG. 3 is a schematic view of the drive sleeve of the present application with a side wall of the drive sleeve shown in cross-section;

FIG. 4 is a schematic view of the loading mechanism of the present application wherein the weld is exploded;

FIG. 5 is a partial exploded view of the present application, primarily showing the positioning assembly and the maintenance assembly;

fig. 6 is a schematic structural view of the connection assembly in the present application.

Reference numerals: 1. a base; 11. a first fixing seat; 12. the second fixing seat; 13. a support; 14. a sliding seat; 15. a copper bar is arranged; 16. a copper bar is arranged; 17. a lifting cylinder; 18. lifting a cylinder; 21. a drive ring; 22. a mounting table; 23. a rotating shaft; 24. a mounting plate; 3. a charging device; 31. a drive sleeve; 311. a vertical groove; 312. a spiral groove; 313. a mounting groove; 32. a support table; 321. a support block; 322. a support groove; 323. a receiving groove; 33. a drive assembly; 34. a driving rod; 35. driving the beads; 36. a guide plate; 4. a charging mechanism; 41. a sliding pressing plate; 411. a sliding through hole; 42. a positioning assembly; 43. a positioning frame; 44. a positioning plate; 441. a positioning groove; 45. a pushing block; 46. a rod; 461. inserting a disc; 47. a limiting ring; 48. a feed inlet; 5. a moving assembly; 51. a servo screw rod; 52. a servo motor; 6. a maintenance assembly; 61. maintaining the block; 62. a retaining spring; 7. a connection assembly; 71. a first gear; 72. driving a screw rod; 73. a second gear; 74. a connecting seat; 8. a weldment.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a resistance spot welding machine.

Referring to fig. 1, the resistance spot welder comprises a stand 1, a first fixed seat 11 and a second fixed seat 12 which are vertically and fixedly arranged on the side wall of the stand 1 at intervals, wherein the first fixed seat 11 is positioned above the second fixed seat 12, a support 13 and a sliding seat 14 are respectively and vertically arranged on the side wall of the first fixed seat 11, which is far away from the stand 1, of the first fixed seat 11 in a sliding manner, a vertical upper copper bar 15 and a vertical lower copper bar 16 are respectively and fixedly arranged on the side wall of the support 13 and the sliding seat 14, which is far away from the first fixed seat 11, and the axes of the upper copper bar 15 and the lower copper bar 16 are overlapped and are used for welding after being electrified; the top end of the first fixing seat 11 is fixedly provided with a lifting cylinder 17, a piston rod of the lifting cylinder 17 is vertically downward and fixedly connected with the upper surface of the support 13, the bottom end of the second fixing seat 12 is fixedly provided with a lifting cylinder 18, a piston rod of the lifting cylinder 18 is vertically upward and fixedly connected with the lower surface of the sliding seat 14, the lifting cylinder 17 and the lifting cylinder 18 are simultaneously started to drive the upper copper rod 15 and the lower copper rod 16 to be close to the weldment 8 for welding, and the base 1 is provided with a charging device 3 for installing the weldment 8.

Referring to fig. 1, a fixing hole is formed on the upper surface of the second fixing base 12 and located between the sliding base 14 and the stand 1, and the fixing hole vertically penetrates the second fixing base 12 downwards; the charging device 3 comprises a driving sleeve 31 and two supporting tables 32, the driving sleeve 31 is rotatably arranged on the upper surface of the second fixing seat 12, and the driving sleeve 31 and the fixing hole are coaxially arranged, and the inner diameter of the driving sleeve 31 is the same as the diameter of the fixing hole.

Referring to fig. 1 and 2, a driving ring 21 is coaxially and fixedly mounted on the outer side wall of a driving sleeve 31, mounting tables 22 are fixedly mounted on the outer side wall of the driving ring 21, two mounting tables 22 are circumferentially arranged around the axis of the driving sleeve 31 in an array manner, the array angle is 90 degrees, one of the mounting tables 22 is positioned between an upper copper bar 15 and a lower copper bar 16, and the upper surfaces of the mounting tables 22 and the driving ring 21 are flush; mounting holes communicated with the lower surfaces of the mounting tables 22 are formed in the upper surfaces of the two mounting tables 22, and the mounting holes are used for allowing the lower copper rod 16 to pass through when moving upwards; the two support tables 32 are respectively and horizontally slidably arranged on the upper surfaces of the two mounting tables 22, the sliding directions of the two support tables 32 are vertical, and meanwhile, the sliding directions of the support tables 32 are vertical to the connecting line between the circle center of the driving sleeve 31 and the center of the upper surface of the mounting table 22; a moving assembly 5 for driving the support table 32 to move is provided on both mounting tables 22.

Referring to fig. 2, the moving assembly 5 includes a servo screw 51 and a servo motor 52, the servo screw 51 being horizontally rotatably installed on the upper surface of the mounting table 22 and being screw-coupled with the sidewall of the support table 32; the servo motor 52 is fixedly arranged on the upper surface of the mounting table 22, and an output shaft of the servo motor 52 is connected with the servo screw rod 51; the servo motor 52 is started to drive the servo screw rod 51 to rotate, and the servo screw rod 51 rotates to drive the support table 32 to move in the horizontal direction.

Referring to fig. 1 and 2, the charging device 3 further includes a driving assembly 33 and a charging mechanism 4, the driving assembly 33 is disposed on the base 1 and is used for driving the driving sleeve 31 to rotate so that the two mounting platforms 22 rotate 90 degrees, one of the mounting platforms 22 rotates between the upper copper bar 15 and the lower copper bar 16, the other mounting platform 22 rotates outside the upper copper bar 15 and the lower copper bar 16, the charging mechanism 4 is disposed on the two supporting platforms 32 and is used for mounting the weldment 8, and when the weldment 8 needs to be welded at multiple positions, the servo motor 52 is started to drive the supporting platforms 32 and the weldment 8 to move, so that the multiple positions of the weldment 8 can be welded.

Referring to fig. 2 and 3, two vertical grooves 311 are arranged on the inner side wall of the driving sleeve 31 in a circumferential array around the axis of the driving sleeve 31, the vertical grooves 311 are vertically communicated with the top end of the driving sleeve 31 upwards, and the array angle of the two vertical grooves 311 is 90 degrees as same as that of the two mounting platforms 22; the side walls of the two vertical grooves 311 are communicated through the spiral groove 312, the spiral center of the spiral groove 312 is located on the axis of the driving sleeve 31, the spiral grooves 312 are arranged in a mirror image mode, two vertical grooves 311 and two spiral grooves 312 are semicircular and are identical in diameter, and the two vertical grooves are mutually intersected and located at the same horizontal height.

Referring to fig. 1, 2 and 3, the driving assembly 33 includes a driving rod 34, a driving bead 35 and a guide plate 36, wherein the mounting plate 24 is fixedly mounted on the side wall of the bottom end of the support 13 near one side of the driving sleeve 31, the mounting plate 24 horizontally extends above the driving sleeve 31, the driving rod 34 is fixedly mounted on the lower surface of the mounting plate 24, the driving rod 34 coaxially slides through the inner side wall of the driving sleeve 31, and meanwhile, the driving rod 34 can slide and mount on a fixing hole; the driving beads 35 are rotatably mounted on the side walls of the driving rod 34, and the driving beads 35 are slidably mounted into the two vertical grooves 311 and the two spiral grooves 312.

Referring to fig. 2 and 3, the side walls of the connection parts of the two vertical grooves 311 and the spiral grooves 312 above the spiral grooves 312 are provided with mounting grooves 313, and the side walls of the two vertical grooves 311 and the two spiral grooves 312 below the spiral grooves 312 are provided with mounting grooves 313; the guide plates 36 are provided with four guide plates and are respectively and fixedly installed on the four installation grooves 313, meanwhile, the guide plates 36 are elastic and protrude out of the installation grooves 313, and the guide plates 36 are used for stopping the driving beads 35 from moving back to the spiral grooves 312 or the vertical grooves 311 which are originally moved when the driving beads 35 move, so that the driving beads 35 perform the movement of intersecting each other.

Referring to fig. 1, 2 and 3, when the upper copper rod 15 contacts with the weldment 8, the driving bead 35 is located on the vertical groove 311 and below the spiral groove 312, the driving bead 35 enters the spiral groove 312 under the action of the guide plate 36 after moving upwards, the driving bead 35 drives the driving sleeve 31 to rotate, so that the driving bead 35 moves into the other vertical groove 311, and when moving backwards, the guide plate 36 stops the driving bead 35 from moving backwards into the spiral groove 312, so that the driving bead 35 moves downwards vertically into the vertical groove 311 below the spiral groove 312, and therefore, the driving sleeve 31 is limited and cannot rotate when the driving rod 34 and the driving bead 35 move backwards; meanwhile, when the driving rod 34 and the driving beads 35 continue to move upwards, the driving beads 35 repeat the moving process, so that the driving sleeve 31 is made to reciprocate by 90 degrees, and meanwhile, the lower copper bars 16 are located above the charging mechanism 4 for avoiding in the rotating process of the driving sleeve 31.

Referring to fig. 1, 2 and 3, when the support 13 moves down to drive the lower copper bar 16 to move down for welding, the driving sleeve 31 is in a stable and static state under the action of the driving beads 35, so that the weldment 8 which is turned to the outer sides of the upper copper bar 15 and the lower copper bar 16 can be replaced, and the lower copper bar 16 and the upper copper bar 15 weld the weldment 8 which is positioned between the upper copper bar 15 and the lower copper bar 16; after the welding of the weldment 8 is finished, the support 13 moves upwards, then the driving bead 35 moves onto the spiral groove 312, so that the driving sleeve 31 rotates, the driving sleeve 31 rotates to drive the two mounting tables 22 to rotate, so that the charging mechanisms 4 on the two mounting tables 22 rotate, then the weldment 8 positioned on the outer sides of the upper copper rod 15 and the lower copper rod 16 can be replaced, and the support 13 does not drive the two charging mechanisms 4 to rotate when moving downwards for welding, so that the time for replacing the weldment 8 is prolonged, the weldment 8 is replaced and welded simultaneously, the probability of midway shutdown during the production of a spot welder is reduced, and the production efficiency of the spot welder is improved; the loading mechanism 4 comprises a sliding platen 41 and two positioning assemblies 42.

Referring to fig. 4 and 5, two positioning assemblies 42 are respectively disposed on two support tables 32, and the positioning assemblies 42 are used for positioning the horizontal position of the welding member 8, wherein the positioning assemblies 42 comprise a positioning frame 43, a positioning plate 44, a push block 45, an inserting rod 46 and a limiting ring 47, the positioning frame 43 is fixedly mounted on the upper surface of the support table 32, the positioning frame 43 is in a cuboid shape, three sides of the positioning frame 43 are connected together, and a feed inlet 48 is formed on the other side of the positioning frame 43; when the weldment 8 is installed, the three side walls of the weldment 8 are abutted against the three side walls of the positioning frame 43, the weldment 8 can be placed on the upper surface of the supporting table 32 for positioning, a plurality of supporting holes for the lower copper rods 16 to pass through are formed in the supporting table 32 at intervals along the sliding direction of the supporting table 32, and when the supporting holes are aligned with the mounting holes, the lower copper rods 16 can be in contact with the lower surface of the weldment 8 through the mounting holes and the supporting holes for welding.

Referring to fig. 4 and 5, the supporting blocks 321 are fixedly mounted on the side wall of the supporting table 32 close to the feeding hole 48 and positioned on both sides of the feeding hole 48, supporting grooves 322 which are communicated with the side wall of the opposite side of the two supporting blocks 321 are formed on the upper surfaces of the two supporting blocks 321, the supporting grooves 322 are obliquely downward and the bottom ends of the supporting grooves 322 are arranged towards the side close to the supporting table 32, so that the distance between the top ends of the supporting grooves 322 and the feeding hole 48 in the horizontal direction is larger than the distance between the bottom ends of the supporting grooves 322 and the feeding hole 48 in the horizontal direction, containing grooves 323 are formed on the upper surface of the supporting table 32 and positioned on the side close to the two supporting blocks 321, and the containing grooves 323 are communicated with the side wall of the supporting table 32 on which the supporting blocks 321 are mounted.

Referring to fig. 4 and 5, the positioning plate 44 is rotatably mounted on the two support grooves 322 through the rotation shaft 23, the rotation shaft 23 is fixedly mounted at the bottom end of the positioning plate 44, and the positioning plate 44 is positioned at the feed inlet 48; the push block 45 is fixedly arranged on the side wall of the locating plate 44, which is close to one side of the accommodating groove 323, and the push block 45 is positioned at the bottom end of the locating plate 44 and can extend into the accommodating groove 323; the two supporting grooves 322 are provided with a maintaining component 6 which is connected with the rotating shaft 23 and maintains the feed inlet 48 in an open state; the maintaining assembly 6 comprises maintaining blocks 61 and maintaining springs 62, wherein the maintaining blocks 61 are slidably installed on the supporting grooves 322, and the rotating shaft 23 is rotatably installed on the side wall of the opposite side of the two maintaining blocks 61; one end of the maintaining spring 62 is fixedly installed on the side wall of the maintaining block 61 near the bottom of the supporting groove 322, and the other end of the maintaining spring 62 is pressed against the bottom of the supporting groove 322 to position.

Referring to fig. 4 and 5, the insert rod 46 is horizontally slidably mounted on a side wall of the locating plate 44 on a side far from the locating frame 43, and the insert rod 46 is inserted and mounted on a side wall of the locating frame 43 on a side close to the locating plate 44 for locating, meanwhile, the insert rod 46 is provided with two insert plates located at two side walls of the locating frame 43 close to the locating plate 44, and an insert plate 461 convenient for force assistance is fixedly mounted at one end of the insert rod 46 far from the locating frame 43; the limiting ring 47 is fixedly installed on the inserting rod 46 and is located between the positioning plate 44 and the positioning frame 43, meanwhile, a positioning groove 441 for the limiting ring 47 to enter into for avoiding is formed in the positioning plate 44, the inserting rod 46 is pulled to drive the limiting ring 47 to abut against the bottom of the positioning groove 441 for limiting, and at the moment, the inserting rod 46 is separated from the positioning frame 43, and meanwhile, the inserting rod 46 is prevented from being separated from the positioning plate 44.

Referring to fig. 4 and 5, when the weldment 8 is placed on the supporting table 32, the upper surface of the weldment 8 is located above the positioning frame 43, while the weldment 8 is pressed against the upper surface of the push block 45, and the positioning plate 44 is in a vertical state and is pressed against the positioning frame 43 and the side wall of the weldment 8 to position, the maintaining spring 62 is in a compressed state, and the insert rod 46 is horizontally inserted and mounted on the positioning frame 43 to position the positioning plate 44 and the weldment 8.

Referring to fig. 4 and 5, after the welding of the welding member 8 is completed, the insert disk 461 is grasped to pull the insert rod 46, so that the limit ring 47 is pressed against the bottom of the positioning groove 441 to be positioned, and the insert rod 46 is separated from the positioning frame 43; then, the insert disc 461 is pressed downwards to drive the insert rod 46, the positioning plate 44 and the push block 45 to rotate, and the positioning plate 44 and the push block 45 are also moved obliquely upwards under the action of the maintaining spring 62, so that the push block 45 is away from the weldment 8 and rotates simultaneously, and a gap is formed between one side of the weldment 8, which is close to the feed inlet 48, and the upper surface of the supporting table 32, so that a worker can stretch hands into the gap to conveniently take off the weldment 8 after welding, and meanwhile, the maintaining spring 62 maintains the position of the positioning plate 44, the downward movement probability of the positioning plate 44 under the action of gravity is reduced, and the feed inlet 48 is in an open state to conveniently put the weldment 8 to be welded.

Referring to fig. 4 and 5, three side walls of the weldment 8 to be welded are abutted against three side walls of the positioning frame 43, and then the weldment 8 is pushed downwards to move downwards, so that the lower surface of the weldment 8 is abutted against the push block 45, and therefore the push block 45 is pushed to move downwards and rotate simultaneously along with the downward movement of the weldment 8, so that the push block 45 moves into the accommodating groove 323, the positioning plate 44 is rotated to a vertical state and abutted against the side walls of the positioning frame 43 and the weldment 8 to be positioned, and then the inserting plate 461 is pushed to drive the inserting rod 46 to be inserted and installed on the positioning frame 43 to be positioned, so that convenience in replacing the weldment 8 is improved, and production efficiency of the spot welder is improved.

Referring to fig. 1 and 6, a sliding pressing plate 41 is slidably sleeved on the outer side wall of the driving sleeve 31, the sliding pressing plate 41 extends between the upper copper bar 15 and the lower copper bar 16, and meanwhile, a sliding through hole 411 for the upper copper bar 15 to pass through is formed in the sliding pressing plate 41; the sliding pressing plate 41 is connected with the driving sleeve 31 through the connecting component 7, and the driving sleeve 31 can drive the sliding pressing plate 41 to move up and down to be close to or far away from the weldment 8 through the connecting component 7 when rotating; the connecting assembly 7 comprises a first gear 71, a driving screw 72 and a second gear 73, wherein the first gear 71 is connected on the outer side wall of the driving sleeve 31 in a key way and is positioned above the sliding pressing plate 41; a horizontal connecting seat 74 is fixedly arranged on the side wall of the machine base 1 and between the first fixing seat 11 and the second fixing seat 12, and the connecting seat 74 is positioned between the driving sleeve 31 and the machine base 1; the driving screw 72 is rotatably installed on the lower surface of the connecting seat 74, and the driving screw 72 is in a vertical state and is in threaded connection with the sliding pressing plate 41; the second gear 73 is keyed to the drive screw 72 and the first gear 71 is meshed.

Referring to fig. 1, 3 and 6, the driving sleeve 31 rotates to drive the first gear 71 to rotate, the first gear 71 rotates to drive the second gear 73 and the driving screw 72 to rotate, and the driving screw 72 rotates to drive the sliding pressing plate 41 to move up and down; meanwhile, when the upper copper rod 15 needs to be welded at a plurality of positions of the welding piece 8, the support 13 moves upwards to drive the upper copper rod 15 to move to the position above the sliding pressing plate 41 for avoiding, when the bottom end of the upper copper rod 15 moves to be level with the upper surface of the sliding pressing plate 41, the driving bead 35 moves to the connection position of the spiral groove 312 and the vertical groove 311 positioned below the spiral groove 312, so that the driving bead 35 moves into the spiral groove 312 along with the continuous upward movement of the upper copper rod 15, the driving sleeve 31 rotates, the sliding pressing plate 41 moves upwards to be separated from the welding piece 8, the probability that the sliding pressing plate 41 damages the welding piece 8 when the supporting table 32 moves to drive the welding piece 8 to move is reduced, and the sliding pressing plate 41 is driven to abut against the welding piece 8 for positioning when the upper copper rod 15 moves downwards after the movement of the welding piece 8 is completed.

The working principle of the embodiment of the application is as follows:

when the upper copper bar 15 and the lower copper bar 16 are close to the weldment 8 for welding, the insert disc 461 is pulled to drive the insert rod 46 to separate from the positioning frame 43, then the insert disc 461 is pressed down to drive the positioning plate 44 and the push block 45 to rotate, the push block 45 is rotated to drive one side of the weldment 8 close to the positioning plate 44 to rotate upwards, the weldment 8 is rotated to push the positioning plate 44 and the push block 45 to move upwards away from the weldment 8, simultaneously the positioning plate 44 and the push block 45 are also moved upwards away from the weldment 8 under the action of the maintaining spring 62, a gap is formed between the weldment 8 and the upper surface of the supporting table 32, so that a hand can be stretched into the gap to take down the weldment 8, then three side walls of the weldment 8 to be welded are abutted against three inner side walls of the positioning frame 43, then the lower press the weldment 8 is moved downwards, the push block 45 is pushed downwards after the weldment 8 is contacted with the push block 45 to rotate simultaneously, the weldment 8 is abutted against the upper surface of the supporting table 32, the push block 45 is moved into the accommodating groove 323, and the positioning plate 44 is rotated to a vertical state and pressed against the side walls of the weldment 8 and the positioning frame 43 to push the side walls of the weldment 8 to be positioned, and then the insert rod 46 is moved to the insert disc 46 is positioned, and the insert disc 8 is positioned on the insert disc 8 is positioned and the insert disc 43 is positioned and positioned.

When a plurality of welding parts 8 are required, the upper copper bar 15 moves upwards and the lower copper bar 16 moves downwards and is far away from the welding parts 8, so that the upper copper bar 15 moves above the sliding pressing plate 41, the lower copper bar 16 moves below the mounting table 22, the driving sleeve 31 rotates to drive the sliding pressing plate 41 to move upwards, then the servo motor 52 is started to drive the supporting table 32 and the welding parts 8 to move together, after the movement is finished, the upper copper bar 15 moves downwards and the lower copper bar 16 moves upwards and is close to the welding parts 8 to weld, and the driving sleeve 31 rotates to drive the sliding pressing plate 41 to move downwards and press the welding parts 8 to be positioned, so that a plurality of welding parts 8 are welded; after the welding is finished, the upper copper bar 15 moves upwards and the lower copper bar 16 moves downwards, the upper copper bar 15 moves upwards to drive the driving sleeve 31 to rotate, the driving sleeve 31 rotates to enable the welded weldment 8 to rotate to the outer sides of the upper copper bar 15 and the lower copper bar 16, the weldment 8 to be welded after the installation is finished is rotated between the upper copper bar 15 and the lower copper bar 16, then the upper copper bar 15 moves downwards and the upper copper bar 15 moves upwards to weld, and simultaneously the weldment 8 positioned on the outer sides of the upper copper bar 15 and the lower copper bar 16 can be replaced, so that the production efficiency of a spot welder is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a resistance spot welder, includes frame (1), lower bar copper (16) of setting on frame (1) and slides support (13) of setting on frame (1), be provided with lift cylinder (17) of being connected with support (13) on frame (1), be provided with on support (13) with lower bar copper (16) corresponding bar copper (15), its characterized in that: the base (1) is provided with a charging device (3) for installing a weldment (8), and the charging device (3) comprises:

the driving sleeve (31) is rotatably arranged on the machine base (1);

the two supporting tables (32), the two supporting tables (32) are arranged on the driving sleeve (31) in a circumferential array around the axis of the driving sleeve (31);

the driving assembly (33) is arranged on the machine base (1), is connected with the driving sleeve (31) and is used for driving the two supporting tables (32) to rotate in a reciprocating manner;

the charging mechanism (4) is arranged on the two supporting tables (32) and is used for installing weldments (8);

two vertical grooves (311) are formed in the inner side wall of the driving sleeve (31) in a circumferential array around the axis of the driving sleeve (31), and the two vertical grooves (311) are communicated through two spiral grooves (312) which are mutually intersected and in a spiral shape;

the drive assembly (33) comprises:

the driving rod (34) is arranged on the support (13) and is glidingly arranged on the driving sleeve (31);

the driving beads (35) are rotatably arranged on the driving rods (34) and can be slidably arranged on the two vertical grooves (311) and the two spiral grooves (312) and used for driving the two supporting tables (32) to reciprocally rotate, and meanwhile, when the upper copper rod (15) is in contact with the weldment (8), the driving beads (35) are positioned on the vertical grooves (311) and below the spiral grooves (312), and a plurality of mounting grooves (313) are formed at the joint of the two vertical grooves (311) and the two spiral grooves (312);

the guide plates (36) are arranged on the plurality of mounting grooves (313) respectively and protrude out of the mounting grooves (313), and the guide plates (36) are elastic and used for stopping the driving beads (35) from continuously moving back to the vertical grooves (311) or the spiral grooves (312) which are originally moved when moving;

the charging mechanism (4) comprises:

the sliding pressing plate (41) is vertically arranged on the driving sleeve (31) in a sliding manner, is propped against the weldment (8) to be positioned, and is connected with the driving sleeve (31) through the connecting assembly (7), and when the driving sleeve (31) rotates, the sliding pressing plate (41) is driven to be close to or far away from the weldment (8) through the connecting assembly (7);

the two positioning assemblies (42) are arranged on the supporting table (32) and used for positioning the horizontal position of the welding part (8);

the positioning assembly (42) comprises:

the positioning frame (43), the positioning frame (43) is arranged on the supporting table (32) and is provided with a feed inlet (48);

the positioning plate (44) is rotatably arranged on the supporting table (32) through the rotating shaft (23), blocks the feeding hole (48) and is matched with the positioning frame (43) to be abutted against a plurality of side walls of the weldment (8);

a pushing block (45), wherein the pushing block (45) is arranged on the positioning plate (44) and is used for pushing the weldment (8) to move upwards and away from the supporting table (32), and when the weldment (8) is placed on the supporting table (32), the pushing block (45) is in contact with the weldment (8);

the inserting rod (46) is arranged on the positioning plate (44) in a sliding manner, and is inserted and installed on the positioning frame (43) for positioning;

a limit ring (47), wherein the limit ring (47) is arranged on the inserted link (46) and is used for preventing the inserted link (46) from being separated from the positioning plate (44);

two supporting grooves (322) which incline downwards and the bottom ends face to one side close to the supporting table (32) are formed in the supporting table (32), the rotating shaft (23) is rotatably arranged on the two supporting grooves (322), and the two supporting grooves (322) are respectively provided with a maintaining component (6) which is connected with the rotating shaft (23) and used for maintaining the feeding hole (48) in an open state.

2. A resistance spot welder as defined in claim 1, wherein: the connection assembly (7) comprises:

a first gear (71), wherein the first gear (71) is arranged on the outer side wall of the driving sleeve (31);

the driving screw rod (72) is rotatably arranged on the machine base (1) and is in threaded connection with the sliding pressing plate (41);

and a second gear (73), wherein the second gear (73) is arranged on the driving screw (72) and is meshed with the first gear (71).

3. A resistance spot welder as defined in claim 1, wherein: the maintenance assembly (6) comprises:

a maintaining block (61), wherein the maintaining block (61) is slidably installed on the supporting groove (322), and the rotating shaft (23) is rotatably installed on the two maintaining blocks (61);

and a maintaining spring (62), wherein the maintaining spring (62) is arranged on the maintaining block (61) and is connected with the supporting groove (322), and when the welding piece (8) is pressed against the pushing block (45), the maintaining spring (62) is in a compressed state.

4. A resistance spot welder as defined in claim 1, wherein: the lifting device is characterized in that a sliding seat (14) is arranged on the base (1) in a sliding mode along the sliding direction of the support (13), the lower copper rod (16) is arranged on the sliding seat (14), and a lifting cylinder (18) connected with the sliding seat (14) is arranged on the base (1).

5. A resistance spot welder as defined in claim 4, wherein: the novel welding device is characterized in that mounting tables (22) are arranged on the driving sleeve (31) and located at the two supporting tables (32), the driving beads (35) are driven to move into the spiral grooves (312) when the upper copper bars (15) move upwards in the process of carrying out a plurality of welding, the two supporting tables (32) are horizontally slipped and arranged on the mounting tables (22), and the moving assemblies (5) for driving the supporting tables (32) to move are arranged on the mounting tables (22).

6. A resistance spot welder as defined in claim 5, wherein: the moving assembly (5) comprises:

the servo screw rod (51) is rotatably arranged on the mounting table (22) and is in threaded connection with the supporting table (32);

and the servo motor (52) is arranged on the mounting table (22) and is connected with the servo screw rod (51).