CN212945999U

CN212945999U - Spot welding machine

Info

Publication number: CN212945999U
Application number: CN202021830160.6U
Authority: CN
Inventors: 黄仲捌; 钱嘉能; 王铁炜; 沈宇鹏
Original assignee: Shaoxing Puling Electrical Appliances Co ltd
Current assignee: Shaoxing Puling Electrical Appliances Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-04-13
Anticipated expiration: 2030-08-27

Abstract

The utility model relates to a spot welder relates to welding equipment's technical field, and it includes the frame, install the conveying frame in the frame, it is connected with a plurality of transfer rollers to rotate on the conveying frame, install electrode and bottom electrode in the frame, the electrode with the bottom electrode is located respectively the both sides of conveying frame, the installation has clamping device on the conveying frame, clamping device includes two mount tables and two supporting tight piece, two the mount table is installed on the conveying frame, each supporting tight piece slides respectively and connects two on the mount table, two install drive assembly between the mount table, drive assembly is used for driving two supporting tight piece and being close to each other or keeping away from. This application is through clamping device, drive assembly and drive assembly's setting for the staff can carry out centre gripping work to the work piece, further strengthens the work piece and is carrying out the stability of spot welding during operation, reduces the influence that factors such as external force produced the work piece position, and then improves the quality of work piece spot welding work.

Description

Spot welding machine

Technical Field

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

Background

The existing spot welding machine adopts the principle of double-sided double-point overcurrent welding, when the spot welding machine works, two electrodes pressurize workpieces to enable two layers of metals to form a certain contact resistance under the pressure of the two electrodes, welding current passes through the other electrode from one electrode to form instant heat welding at the two contact resistance points, and the welding current instantly flows from one electrode to the electrodes along the two workpieces to form a loop, so that a welded part is not damaged.

The utility model discloses a spot welder is disclosed in chinese utility model patent that publication number is CN206795020U, including the fuselage, be located last electrode assembly and the lower electrode subassembly on the fuselage, install the transport mechanism who carries the work piece on the fuselage, transport mechanism includes the transfer frame and rotates the transfer roller of connection on the transfer frame, the transfer roller is located between electrode assembly and the lower electrode subassembly, through belt drive between the transfer roller, the last installation of transfer frame is used for the drive the driving motor of transfer roller. When the device is used for carrying out electric welding work on a workpiece, the driving motor is started, the driving motor drives the conveying roller to rotate, the conveying roller further drives the workpiece to be conveyed between the upper electrode assembly and the lower electrode assembly, and then the upper electrode assembly and the lower electrode assembly are abutted against the workpiece and are subjected to spot welding work.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: above-mentioned device is carrying out electric welding work to the work piece, and the work piece passes through the transfer roller and transports to make work piece butt supporting seat between last electrode subassembly and the lower electrode subassembly, then safety cover and lower plate body butt work piece in proper order, but above-mentioned process only plays the preliminary spacing function to the work piece, can not play the better fixed action to the work piece, consequently at the in-process that carries out spot welding, and the work piece probably because the skew of factors such as external force emergence position, and then influences the precision of spot welding work.

SUMMERY OF THE UTILITY MODEL

The application provides a spot welder in order to improve the problem that the fixed effect of spot welding in-process to the work piece is not good and then influences the precision of spot welding work.

The application provides a spot welder adopts following technical scheme:

the utility model provides a spot welder, includes the frame, install the conveying frame in the frame, it is connected with a plurality of transfer rollers to rotate on the conveying frame, install electrode and bottom electrode in the frame, go up the electrode with the bottom electrode is located respectively the both sides of conveying frame, the conveying shelf location has clamping device, clamping device includes two mount tables and two and supports tight piece, two the mount table is installed respectively on the conveying frame, each it is connected two to support tight piece and equally divide and do not slide on the mount table, two install drive assembly between the mount table, drive assembly is used for the drive two support tight piece and be close to each other or keep away from.

Through adopting above-mentioned technical scheme, when needs carry out spot welding work to the work piece, the transfer roller drives the work piece and transports between last electrode and the bottom electrode, then starts drive assembly, and two supporting tight piece of drive assembly drive are close to each other, and two supporting tight piece are further to carry out centre gripping work to the work piece, then go up electrode and bottom electrode and further carry out spot welding work to the work piece, further reduce the influence of factors such as external force to the work piece position, further improve the quality of work piece spot welding work.

Preferably, the driving assembly comprises a rotating shaft, a first gear, a second gear and a servo motor, a C-shaped block is installed at the bottom end of the rack, two ends of the C-shaped block are respectively connected with the two installation tables, an installation cavity is formed in the C-shaped block, the servo motor is fixedly connected to one side of the C-shaped block, the rotating shaft is connected to the C-shaped block in a rotating mode in the width direction of the rack, the rotating shaft is connected to the output shaft of the servo motor, the first gear and the second gear are fixedly connected to the outer peripheral wall of the rotating shaft extending into the installation cavity, a transmission assembly is arranged on the first gear and the second gear and used for driving the abutting block to move.

Through adopting above-mentioned technical scheme, when needs carry out centre gripping work to the work piece, start servo motor, servo motor's output shaft drives the axis of rotation and takes place to rotate, and the axis of rotation further drives first gear and second gear and takes place to rotate, and first gear and second gear further promote two to support the piece and be close to each other through drive assembly, and two support the piece and further press from both sides the tight fixed with the work piece, realize the centre gripping work to the work piece.

Preferably, the transmission assembly comprises a first threaded rod, a second threaded rod, a third gear, a fourth gear, a third threaded rod and a fourth threaded rod, the first threaded rod and the second threaded rod are rotatably connected in the installation cavity along the vertical direction, the thread directions of the first threaded rod and the second threaded rod are opposite, the first gear is meshed with the first threaded rod, the second gear is meshed with the second threaded rod, the third threaded rod and the fourth threaded rod are respectively in threaded connection with the C-shaped block along the width direction of the rack, one end of the third threaded rod extends into the installation cavity and is fixedly connected with the third gear, the other end of the third threaded rod is in threaded connection with the abutting block, and one end of the fourth threaded rod extends into the installation cavity and is fixedly connected with the fourth gear, the other end of the fourth threaded rod is in threaded connection with the abutting block, the third gear is meshed with the first threaded rod, and the fourth gear is meshed with the second threaded rod.

By adopting the technical scheme, when a workpiece needs to be clamped, the servo motor is started, the output shaft of the servo motor drives the rotating shaft to rotate, the rotating shaft further drives the first gear and the second gear to rotate in the same direction, the first gear drives the first threaded rod to rotate, the first threaded rod drives the third gear to rotate, and the third gear drives the third threaded rod to rotate; meanwhile, the second gear drives the second threaded rod to rotate, the second threaded rod drives the fourth gear to rotate, the fourth gear drives the fourth threaded rod to rotate, the thread directions of the first threaded rod and the second threaded rod are opposite, so that the rotation directions of the third threaded rod and the fourth threaded rod are opposite, the third threaded rod and the fourth threaded rod further drive the two abutting blocks to be close to each other, and the workpiece is clamped.

Preferably, the abutting block comprises a rectangular block and an abutting portion, the two rectangular blocks are in threaded connection with the third threaded rod and the fourth threaded rod respectively, the bottom surface of the rectangular block abuts against the top surface of the mounting table, the abutting portion is detachably connected to the rectangular block, and a mounting piece is arranged on the abutting portion.

Through adopting above-mentioned technical scheme, the setting that the rectangle piece bottom surface supports tightly with the mount table top surface for after third threaded rod and fourth threaded rod took place to rotate, two rectangle pieces can change the position on third threaded rod and fourth threaded rod, and then make on two rectangle pieces support tight portion and be close to each other, realize the centre gripping work to the work piece.

Preferably, the mounting piece comprises a mounting block and a locking bolt, a dovetail groove is formed in the rectangular block, the mounting block is fixedly connected to the abutting portion, the mounting block is connected in the dovetail groove in a sliding mode, and the locking bolt penetrates through the mounting block and is connected in the dovetail groove in a threaded mode.

Through adopting above-mentioned technical scheme, the setting of installation piece and locking bolt for the staff can select suitable tight piece of supporting according to the work piece that carries out the spot welding, and then makes when carrying out spot welding work to different work pieces, supports tight piece and is in the tight state of supporting of preferred to the work piece all the time, reduces the influence that factors such as external force produced the work piece position, improves the quality of work piece spot welding work.

Preferably, the conveying frame is provided with a sliding groove along the length direction, the bottom of the mounting table is fixedly connected with a sliding block, a lead screw is rotatably connected in the sliding groove, the sliding block is provided with a lead screw threaded hole matched with the lead screw, and one end of the lead screw extends out of the rack and is fixedly connected with a handle.

Through adopting above-mentioned technical scheme, because the transfer roller work piece has certain inertia when transporting the work piece, consequently probably the work piece can't be accurate must stop between upper electrode and lower electrode, needs the position of staff's manual adjustment work piece this moment. The handle is rotated, the handle further drives the lead screw to rotate, and the lead screw is matched with a lead screw threaded hole in the sliding block and the sliding groove, so that the sliding block changes the position on the lead screw, and the position of a workpiece is adjusted.

Preferably, the lead screw stretches out the one end fixedly connected with limit gear of frame, frame tip fixedly connected with fixing base, it is connected with the slide bar to slide on the fixing base, the slide bar is close to limit gear's the spacing tooth piece of one end fixedly connected with of limit gear, limit gear piece with limit gear meshes mutually.

By adopting the technical scheme, the limiting gear and the limiting toothed block are matched to limit circumferential rotation of the screw rod, so that the position of the sliding block on the screw rod is locked, the influence of factors such as external force on the position of the workpiece on the rack is reduced, and the quality of spot welding work of the workpiece is further improved.

Preferably, a mounting column is fixedly connected to one side of the rack, a first mounting seat and a second mounting seat are fixedly connected to the mounting column along the vertical direction, a first cylinder is fixedly connected to the first mounting seat, a piston rod of the first cylinder is connected with the upper electrode, a second cylinder is fixedly connected to the second mounting seat, and a piston rod of the second cylinder is connected with the lower electrode.

By adopting the technical scheme, when the workpiece needs to be subjected to spot welding, the piston rod of the first cylinder pushes the upper electrode to displace, the piston rod of the second cylinder pushes the lower electrode to displace, and the upper electrode and the lower electrode are further contacted with the workpiece, so that the workpiece is subjected to spot welding.

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

1. through the arrangement of the clamping device, the driving assembly and the transmission assembly, workers can perform fixed clamping work on the workpiece, the stability of the workpiece during spot welding work is further enhanced, the influence of factors such as external force on the position of the workpiece is reduced, and the quality of the spot welding work of the workpiece is further improved;

2. through the setting of installed part for the staff can select suitable tight piece of supporting according to the shape of waiting to process the work piece, makes when carrying out centre gripping work to different processing work pieces, supports and all is in the tight state of supporting of preferred between tight piece and the work piece.

Drawings

Fig. 1 is a schematic perspective view of a spot welder according to an embodiment of the present application;

FIG. 2 is a partial enlarged structural view of the portion A shown in FIG. 1, showing a specific structure at the lead screw;

FIG. 3 is a schematic diagram of an exploded structure at the mounting station of FIG. 1, showing a specific structure at the holding block;

fig. 4 is a schematic sectional view of the frame of fig. 1 in a vertical direction, showing a specific structure at the driving assembly and the transmission assembly.

Description of reference numerals: 100. a frame; 110. a transfer frame; 120. a conveying roller; 130. a drive motor; 140. mounting a column; 150. a first mounting seat; 160. a second mounting seat; 170. a first cylinder; 180. an upper electrode; 190. a second cylinder; 200. a lower electrode; 210. an installation table; 220. a sliding groove; 230. a lead screw; 240. a handle; 250. a slider; 260. a limit gear; 270. a fixed seat; 280. a slide bar; 290. a limit tooth block; 300. a rectangular block; 310. a tightening part; 320. a dovetail groove; 330. mounting blocks; 340. locking the bolt; 350. c-shaped blocks; 360. a mounting cavity; 370. a servo motor; 380. a rotating shaft; 390. a first gear; 400. a second gear; 410. a first threaded rod; 420. a second threaded rod; 430. a third threaded rod; 440. a fourth threaded rod; 450. a third gear; 460. a fourth gear.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a spot welder. Referring to fig. 1, the spot welding machine includes a frame 100, the frame 100 is fixedly connected with a transfer frame 110 along a length direction, the transfer frame 110 is rotatably connected with a plurality of transfer rollers 120 along the length direction of the frame 100 at intervals, one end of the transfer frame 110 is fixedly connected with a driving motor 130, and an output shaft of the driving motor 130 is fixedly connected with the transfer rollers 120 located at the end of the transfer frame 110.

Referring to fig. 1, a mounting column 140 is fixedly connected to a side wall of one end of the rack 100 near the driving motor 130, a first mounting seat 150 and a second mounting seat 160 are fixedly connected to the mounting column 140 along a vertical direction, and the first mounting seat 150 and the second mounting seat 160 are respectively located above and below the conveying rack 110. The first mounting base 150 is fixedly connected with a first cylinder 170, a piston rod of the first cylinder 170 is fixedly connected with an upper electrode 180, the second mounting base 160 is fixedly connected with a second cylinder 190, and a piston rod of the second cylinder 190 is fixedly connected with a lower electrode 200.

Referring to fig. 1 and 2, a clamping device for clamping a workpiece is mounted on the conveying frame 110, the clamping device includes a mounting table 210, a sliding groove 220 is formed in the conveying frame 110 along a length direction, a lead screw 230 is rotatably connected in the sliding groove 220, and one end of the lead screw 230 extends out of one end of the frame 100 close to the driving motor 130 and is fixedly connected with a handle 240. The bottom surface of mount table 210 is fixedly connected with slider 250, and slider 250 slides and connects in sliding groove 220, sets up the lead screw hole with lead screw 230 complex on the slider 250. The one end fixedly connected with stop gear 260 that lead screw 230 stretches out frame 100, the frame 100 is close to the one end terminal surface fixedly connected with fixing base 270 of stop gear 260, and it is connected with slide rod 280 to slide along the horizontal direction on the fixing base 270, and the one end fixedly connected with spacing tooth piece 290 that slide rod 280 is close to stop gear 260, and spacing tooth piece 290 meshes with stop gear 260 mutually.

Referring to fig. 3, the top surface of each mounting platform 210 is connected with a supporting block in a sliding manner, each supporting block comprises a rectangular block 300 and a supporting portion 310, the rectangular block 300 is connected to the mounting platform 210 in a sliding manner, the bottom surface of the rectangular block 300 is supported against the top surface of the mounting platform 210, a dovetail groove 320 is formed in the vertical direction of the side wall of one side, close to each other, of the two rectangular blocks 300, and a mounting member is arranged between the supporting portion 310 and the rectangular block 300. The mounting piece comprises a mounting block 330, the mounting block 330 is fixedly connected to one end, close to the rectangular block 300, of the abutting portion 310, the mounting block 330 is connected in the dovetail groove 320 in a sliding mode, a locking bolt 340 is connected to the mounting block 330 in a threaded mode, and the bottom end of the locking bolt 340 is connected with the bottom of the dovetail groove 320 in a threaded mode.

Referring to fig. 4, a C-shaped block 350 is fixedly connected to the bottom end of the frame 100, an opening of the C-shaped block 350 is arranged toward the upper electrode 180 (refer to fig. 1), a through hole for the lower electrode 200 (refer to fig. 1) to pass through is formed in the bottom surface of the C-shaped block 350, two ends of the C-shaped block 350 are respectively fixedly connected to the side walls of the two installation tables 210, end surfaces of two ends of the C-shaped block 350 are higher than top surfaces of the two installation tables 210, an installation cavity 360 is formed in the C-shaped block 350, and a driving assembly for driving the two abutting blocks to be close to or far away.

Referring to fig. 4, the driving assembly includes a servo motor 370, the servo motor 370 is fixedly connected to a side wall of the C-shaped block 350, a rotating shaft 380 is rotatably connected to the mounting cavity 360 along a width direction of the rack 100, and the rotating shaft 380 is fixedly connected to an output shaft of the servo motor 370. The rotating shaft 380 located in the mounting cavity 360 is fixedly connected with a first gear 390 and a second gear 400 along the axial direction, and the first gear 390 and the second gear 400 are both provided with a transmission assembly for driving the abutting block to displace.

Referring to fig. 4, the transmission assembly includes a first threaded rod 410 and a second threaded rod 420, the first threaded rod 410 and the second threaded rod 420 are both rotatably connected in the installation cavity 360 along a vertical direction, the thread directions of the first threaded rod 410 and the second threaded rod 420 are opposite, a first gear 390 is engaged with the first threaded rod 410, and a second gear 400 is engaged with the second threaded rod 420. The top of the C-shaped block 350 is rotatably connected with a third threaded rod 430 and a fourth threaded rod 440 along the width direction of the rack 100, one end of the third threaded rod 430 extends into the mounting cavity 360 and is fixedly connected with a third gear 450, the third gear 450 is engaged with the first threaded rod 410, and one end of the third threaded rod 430, which is far away from the third gear 450, is in threaded connection with a rectangular block 300. One end of the fourth threaded rod 440 extends into the mounting cavity 360 and is fixedly connected with a fourth gear 460, the fourth gear 460 is meshed with the second threaded rod 420, and one end of the fourth threaded rod 440, which is far away from the fourth gear 460, is in threaded connection with another rectangular block 300.

The implementation principle of a spot welder of this application embodiment does:

when the workpiece needs to be subjected to spot welding, the driving motor 130 is started, the driving motor 130 drives the conveying roller 120 to rotate, the conveying roller 120 further conveys the workpiece to a position between the upper electrode 180 and the lower electrode 200, and the driving motor 130 is turned off. The servo motor 370 is started, an output shaft of the servo motor 370 drives the rotating shaft 380 to rotate, the rotating shaft 380 further drives the first gear 390 and the second gear 400 to rotate in the same direction, the first gear 390 drives the first threaded rod 410 to rotate, the first threaded rod 410 drives the third gear 450 to rotate, and the third gear 450 drives the third threaded rod 430 to rotate; meanwhile, the second gear 400 drives the second threaded rod 420 to rotate, the second threaded rod 420 drives the fourth gear 460 to rotate, the fourth gear 460 drives the fourth threaded rod 440 to rotate, the thread directions of the first threaded rod 410 and the second threaded rod 420 are opposite, so that the rotation directions of the third threaded rod 430 and the fourth threaded rod 440 are opposite, the third threaded rod 430 and the fourth threaded rod 440 further drive the two abutting blocks to be close to each other, and the workpiece is clamped.

Then the piston rod of the first cylinder 170 pushes the upper electrode 180 to displace, the piston rod of the second cylinder 190 pushes the lower electrode 200 to displace, and the upper electrode 180 and the lower electrode 200 are further contacted with the workpiece, so that the spot welding work of the workpiece is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a spot welder, includes frame (100), install transfer gantry (110) on frame (100), it has a plurality of transfer rollers (120) to rotate on transfer gantry (110), install electrode (180) and bottom electrode (200) on frame (100), go up electrode (180) with bottom electrode (200) are located respectively the both sides of transfer gantry (110), its characterized in that: install clamping device on conveying frame (110), clamping device includes two mount tables (210) and two and supports tight piece, two mount table (210) are installed respectively on conveying frame (110), each support tight piece and equally divide and do not slide and connect two on mount table (210), two install drive assembly between mount table (210), drive assembly is used for driving two support tight piece and be close to each other or keep away from.

2. A spot welder according to claim 1, characterized in that: the driving assembly comprises a rotating shaft (380), a first gear (390), a second gear (400) and a servo motor (370), a C-shaped block (350) is installed at the bottom end of the rack (100), two ends of the C-shaped block (350) are respectively connected with the two installation platforms (210), an installation cavity (360) is formed in the C-shaped block (350), the servo motor (370) is fixedly connected to one side of the C-shaped block (350), the rotating shaft (380) is rotatably connected to the C-shaped block (350) along the width direction of the rack (100), the rotating shaft (380) is connected with an output shaft of the servo motor (370), the first gear (390) and the second gear (400) are fixedly connected to the outer peripheral wall of the rotating shaft (380) extending into the installation cavity (360), and transmission assemblies are arranged on the first gear (390) and the second gear (400), the transmission assembly is used for driving the abutting block to displace.

3. A spot welder according to claim 2, characterized in that: the transmission assembly comprises a first threaded rod (410), a second threaded rod (420), a third gear (450), a fourth gear (460), a third threaded rod (430) and a fourth threaded rod (440), the first threaded rod (410) and the second threaded rod (420) are rotatably connected in the installation cavity (360) along the vertical direction, the thread directions of the first threaded rod (410) and the second threaded rod (420) are opposite, the first gear (390) is meshed with the first threaded rod (410), the second gear (400) is meshed with the second threaded rod (420), the third threaded rod (430) and the fourth threaded rod (440) are respectively in threaded connection with the C-shaped block (350) along the width direction of the rack (100), one end of the third threaded rod (430) extends into the installation cavity (360) and is fixedly connected with the third gear (450), the other end of the third threaded rod (430) is in threaded connection with the abutting block, one end of the fourth threaded rod (440) extends into the mounting cavity (360) and is fixedly connected with the fourth gear (460), the other end of the fourth threaded rod (440) is in threaded connection with the abutting block, the third gear (450) is meshed with the first threaded rod (410), and the fourth gear (460) is meshed with the second threaded rod (420).

4. A spot welder according to claim 3, characterized in that: the tightening block comprises rectangular blocks (300) and tightening parts (310), the two rectangular blocks (300) are in threaded connection with the third threaded rod (430) and the fourth threaded rod (440) respectively, the bottom surfaces of the rectangular blocks (300) are tightly pressed against the top surface of the mounting table (210), the tightening parts (310) are detachably connected to the rectangular blocks (300), and mounting pieces are arranged on the tightening parts (310).

5. A spot welder according to claim 4, characterized in that: the mounting piece comprises a mounting block (330) and a locking bolt (340), a dovetail groove (320) is formed in the rectangular block (300), the mounting block (330) is fixedly connected to the tightening part (310), the mounting block (330) is connected to the inside of the dovetail groove (320) in a sliding mode, and the locking bolt (340) penetrates through the mounting block (330) and is connected to the inside of the dovetail groove (320) in a threaded mode.

6. A spot welder according to claim 1, characterized in that: the conveying frame (110) is provided with a sliding groove (220) along the length direction, the bottom of the mounting table (210) is fixedly connected with a sliding block (250), the sliding groove (220) is connected with a lead screw (230) in a rotating mode, the sliding block (250) is provided with a lead screw threaded hole matched with the lead screw (230), and one end of the lead screw (230) extends out of the rack (100) and is fixedly connected with a handle (240).

7. A spot welder according to claim 6, characterized in that: the lead screw (230) stretches out the one end fixedly connected with limit gear (260) of frame (100), frame (100) tip fixedly connected with fixing base (270), it has slide bar (280) to slide on fixing base (270), slide bar (280) are close to the spacing tooth piece (290) of one end fixedly connected with of limit gear (260), spacing tooth piece (290) with limit gear (260) mesh mutually.

8. A spot welder according to claim 1, characterized in that: frame (100) one side fixedly connected with erection column (140), erection column (140) are along vertical direction fixedly connected with first mount pad (150) and second mount pad (160), first cylinder (170) of fixedly connected with on first mount pad (150), the piston rod of first cylinder (170) with go up electrode (180) and connect, fixedly connected with second cylinder (190) on second mount pad (160), the piston rod of second cylinder (190) with lower electrode (200) are connected.