CN218135647U

CN218135647U - Line leaks automatic welder

Info

Publication number: CN218135647U
Application number: CN202222374183.6U
Authority: CN
Inventors: 骆志国
Original assignee: Foshan Xintongmao Intelligent Welding Technology Co ltd
Current assignee: Foshan Xintongmao Intelligent Welding Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-27
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses a line leaks automatic welder when welding process, with the line hourglass assembly on the positioning die, then rotary mechanism drive positioning die rotates to the position that needs the welding on the adjustment line hourglass to assigned position, then welding electrode under the drive of second drive assembly, and welding electrode is close to the line hourglass simultaneously on the drive of first drive assembly, makes electric arc produce between the two, thereby welds the line hourglass between the two; after welding is finished, the second driving assembly drives the lower welding electrode, the first driving assembly drives the upper welding electrode to be far away from the wire leakage, and then the rotating mechanism drives the positioning die to continue rotating so as to adjust the position of the wire leakage, which needs to be welded, to the specified position, thereby forming a cycle; by adopting the design, manual assistance is needed only when the wire taking and placing device is missed on the positioning die in the welding process, manual participation is not needed in other processes, and the welding efficiency is effectively improved.

Description

Line leaks automatic welder

Technical Field

The utility model relates to a welding equipment's technical field, in particular to line leaks automatic welding machine.

Background

The wire strainer is a common tool in a kitchen and mainly comprises a strainer and a handle, wherein the strainer comprises a spiral iron wire and a warp iron wire which are welded into a whole. At present, the welding of the colander needs manual assistance, the product on a positioning die on a welding machine is rotated or the height of the product is adjusted, and the welding position of the product is adjusted, so that the welding work is carried out, but the welding machine of the scheme has low welding efficiency and large labor cost, and is not beneficial to large-scale production.

The utility model discloses it is not enough to solve prior art and research and propose promptly.

SUMMERY OF THE UTILITY MODEL

The welding machine aims at the technical problems that a large amount of manual assistance is needed and the welding efficiency of the welding machine is low when the welding machine is applied to the line leakage in the prior art.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a line leaks automatic welder, includes the frame, be equipped with in the frame and be used for the assembly line to leak the positioning die, be used for driving the positioning die rotatory with the adjustment line leak welding position rotary mechanism, be used for the line on the positioning die leak welding electrode and weld electrode and lower welding electrode on carrying out the welded, it is located the outside that the line leaks to go up welding electrode, welding electrode is located the inboard that the line leaks down, still be equipped with in the frame and be used for driving and go up welding electrode and be close to or keep away from the first drive assembly that the line leaks to and be used for driving down welding electrode and be close to or keep away from the second drive assembly that the line leaks.

In order to ensure the welding effect of the upper welding electrodes, the number of the upper welding electrodes is multiple, the first driving assemblies correspond to the upper welding electrodes one to one, and the outer arc surfaces of the upper welding electrodes which leak along the line are arranged in an arc shape.

In order to ensure the welding effect of the upper welding electrode, the radian of the welding surface of the plurality of upper welding electrodes is similar to or the same as that of the welding outer arc surface of the line leakage.

In order to ensure the transmission effect of the first driving assembly, a portal frame is arranged on the rack, the first driving assembly is a first driver fixedly arranged on the portal frame, and the upper welding electrode is arranged on the output end of the corresponding first driver.

In order to ensure that rotary mechanism can normal operating, rotary mechanism is including setting firmly the fluted disc installation department in the frame, it is connected with first fluted disc to rotate on the fluted disc installation department, be equipped with the mould installation department that is used for installing the positioning die on the first fluted disc, still be equipped with in the frame and be used for driving first fluted disc pivoted third drive assembly.

In order to ensure that the third driving assembly can normally drive the first fluted disc to rotate, the third driving assembly comprises a third driver fixedly arranged on the rack and a second fluted disc arranged on the output end of the third driver, the second fluted disc is meshed with the first fluted disc, and the third driver can drive the second fluted disc to rotate so as to drive the first fluted disc to rotate.

In order to ensure the reliability of first fluted disc function, the fluted disc installation department includes a plurality of bearing installation seats that circumference set up in the frame, each the bearing installation seat on rotate and be provided with the bearing, the inboard of first fluted disc is equipped with bearing joint portion, be equipped with on the inboard of bearing joint portion with bearing complex rotation draw-in groove, the mould installation department sets firmly in the top of bearing joint portion.

In order to ensure that second drive assembly can normal function, second drive assembly includes the sliding seat of the moving direction sliding connection of welding electrode in the frame down and sets firmly the second driver in the frame, the output and the sliding seat of second driver are connected for the drive sliding seat is close to or keeps away from positioning die, be equipped with the fixing base on the sliding seat, be equipped with the mounting hole on the fixing base, detachably is connected with the connecting rod in the mounting hole, the one end of connecting rod extends toward positioning die's direction department to with welding electrode connection down, work as when the second driver drives the fixing base and toward being close to positioning die direction and remove, can leak offseting with the lateral surface and the line of welding electrode down.

In order to ensure the accuracy of the movement of the sliding seat on the rack, the rack is provided with a connecting seat, the connecting seat is provided with a directional sliding rail, and the sliding seat is provided with a sliding block corresponding to the directional sliding rail.

In order to improve the safety of welding electrode when welding down, still be equipped with the flexible fixed subassembly that is used for preventing welding electrode from taking place to rock when carrying out welding process down in the frame, flexible fixed subassembly includes two sets of sliding connection fixed shim in the frame and with each the fourth driver that fixed shim is connected, and two sets of fixed shim are located welding electrode's both sides down respectively, and when welding electrode's lateral surface leaked the counterbalance with the line down, each the fourth driver can drive the fixed shim that corresponds and remove welding electrode's below down to make fixed shim's top surface press close to or counterbalance with welding electrode's bottom down.

The beneficial effects of the utility model are that:

the utility model discloses a line leaks automatic welder, be provided with positioning die in the frame, rotary mechanism, go up welding electrode, lower welding electrode, first drive assembly and second drive assembly, when carrying out the welding process, with the line hourglass assembly on positioning die, then rotary mechanism drive positioning die rotates, need the welded position to the assigned position on the adjustment line hourglass, then second drive assembly drive lower welding electrode removes to the medial surface department that needs the welded position on the line hourglass, first drive assembly drive upper welding electrode removes to the lateral surface department that needs the welded position on the line hourglass, close to through upper welding electrode and lower welding electrode, make the electric arc produce between the two, thereby weld the line hourglass between the two; after welding is finished, the second driving assembly drives the lower welding electrode, the first driving assembly drives the upper welding electrode to be far away from the wire leakage, then the rotating mechanism drives the positioning die to continue rotating so as to adjust the position of the wire leakage, which needs to be welded, to the specified position, then the second driving assembly drives the lower welding electrode, and the first driving assembly drives the upper welding electrode to be close to the wire leakage for welding, so that circulation is formed; adopt such design, only get on positioning die in welding process and put the line hourglass and need artifical supplementary, other in-processes need not artifical the participation, effectively improves welding efficiency, just the utility model discloses a line leaks automatic welder simple structure, effectively reduces the manufacturing cost that the line leaks automatic welder.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the upper welding electrode and the first driving assembly of the present invention after being assembled;

fig. 3 is one of the schematic structural diagrams of the present invention, which conceals the upper welding electrode, the portal frame and a part of the frame;

fig. 4 is a second schematic structural view of the present invention, which is hidden with the upper welding electrode, the portal frame and a part of the frame;

FIG. 5 is an exploded view of the hidden upper welding electrode, the gantry and a part of the frame of the present invention;

fig. 6 is a schematic structural view of the rotating mechanism of the present invention;

FIG. 7 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 6;

fig. 8 is an exploded view of the first toothed disc and the mold mounting portion of the present invention after assembly;

fig. 9 is a schematic structural view of the lower welding electrode and the second driving assembly after being assembled according to the present invention;

FIG. 10 is a schematic cross-sectional view taken along line B-B of FIG. 9;

fig. 11 is an exploded view of the lower welding electrode and the second driving assembly of the present invention after assembly;

fig. 12 is a schematic structural view of the telescopic fixing component of the present invention in a state of abutting against the lower welding electrode.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 2, the automatic wire-leakage welding machine in this embodiment includes a machine frame 1, wherein a positioning mold 2 for assembling a wire leakage 1000, a rotating mechanism 3 for driving the positioning mold 2 to rotate to adjust a welding position of the wire leakage 1000, an upper welding electrode 4 and a lower welding electrode 7 for welding the wire leakage 1000 on the positioning mold 2 are disposed on the machine frame 1, the upper welding electrode 4 is disposed on an outer side of the wire leakage 1000, the lower welding electrode 7 is disposed on an inner side of the wire leakage 1000, and the machine frame 1 is further provided with a first driving assembly for driving the upper welding electrode 4 to approach or be away from the wire leakage 1000, and a second driving assembly 5 for driving the lower welding electrode 7 to approach or be away from the wire leakage 1000; the utility model discloses a line leaks automatic welder, be provided with positioning die in the frame, rotary mechanism, go up welding electrode, lower welding electrode, first drive assembly and second drive assembly, when carrying out the welding process, with the line hourglass assembly on positioning die, then rotary mechanism drive positioning die rotates, need the welded position to the assigned position on the adjustment line hourglass, then second drive assembly drive lower welding electrode removes to the medial surface department that needs the welded position on the line hourglass, first drive assembly drive upper welding electrode removes to the lateral surface department that needs the welded position on the line hourglass, close to through upper welding electrode and lower welding electrode, make the electric arc produce between the two, thereby weld the line hourglass between the two; after welding is finished, the second driving assembly drives the lower welding electrode, the first driving assembly drives the upper welding electrode to be far away from the wire leakage, then the rotating mechanism drives the positioning die to continue rotating so as to adjust the position of the wire leakage, which needs to be welded, to the specified position, then the second driving assembly drives the lower welding electrode, and the first driving assembly drives the upper welding electrode to be close to the wire leakage for welding, so that circulation is formed; adopt such design, only get on positioning die in welding process and put the line hourglass and need artifical supplementary, other in-processes need not artifical the participation, effectively improve welding efficiency, just the utility model discloses a line leaks automatic weld machine simple structure, effectively reduces the manufacturing cost that the line leaked automatic weld machine.

As shown in fig. 1 to 2, in the present embodiment, the number of the upper welding electrodes 4 is plural, the first driving assemblies correspond to the upper welding electrodes 4 one to one, a user can adjust the number of the upper welding electrodes 4 and the first driving assemblies according to the size of the wire drain, and the plural upper welding electrodes 4 are arranged along the welding outer arc surface of the wire drain 1000 in an arc shape; during welding, the first driving assembly can drive the upper welding electrode to perform circular welding on the wire drain, specifically, after the second driving assembly drives the lower welding electrode to be close to the wire drain, the first driving assembly positioned at the top can drive the corresponding upper welding electrode to perform welding on the wire drain, after the welding is completed, the first driving assembly positioned at the top can drive the corresponding upper welding electrode to perform welding on the wire drain, and then the adjacent first driving assemblies drive the corresponding upper welding electrodes to perform welding on the wire drain, and so on until the first driving assembly positioned at the bottom drives the corresponding upper welding electrode to perform welding on the wire drain, and drives the upper welding electrode to perform welding on the wire drain, so that a complete welding process on the wire drain is calculated;

by adopting the design, the structure of the upper welding electrode can be simplified, the upper welding electrode is convenient to produce, the production cost is reduced, the line leakage is circularly welded through the plurality of upper welding electrodes, the welding precision is effectively improved, and the welding effect is ensured.

As shown in fig. 1 to 2, the radian of the welding surface of the upper welding electrodes 4 in this embodiment is similar to or the same as the radian of the welding outer arc surface of the wire funnel 1000; specifically, the radian of the welding surface of the lower welding electrode 7 is similar to or identical to the radian of the welding intrados of the line leakage 1000; by adopting the design, the lower welding electrode 7 and the plurality of upper welding electrodes 4 can be more close to the line leakage, and the welding effect of the lower welding electrode 7 and the plurality of upper welding electrodes 4 on the line leakage is ensured.

As shown in fig. 1 to fig. 2, a gantry 13 is arranged on the frame 1 in this embodiment, the first driving component is a first driver 8 fixedly arranged on the gantry 13, and the upper welding electrode 4 is arranged on an output end of the corresponding first driver 8; the upper welding electrodes 4 are positioned above the line leakage, so that the welding of the line leakage by the upper welding electrodes 4 is facilitated, the structure is simple, and the operation is convenient.

As shown in fig. 3 to 8, the rotating mechanism 3 in this embodiment includes a fluted disc mounting portion 31, a first fluted disc 32, a mold mounting portion 33 and a third driving assembly 34, the fluted disc mounting portion 31 is fixedly disposed on the frame 1, the first fluted disc 32 is rotatably connected to the fluted disc mounting portion 31, the mold mounting portion 33 is assembled on the first fluted disc 32, the third driving assembly 34 is assembled on the frame 1, when a welding process is started, the positioning mold 2 adapted to the mold mounting portion 33 is assembled on the mold mounting portion 33, then the wire funnel 1000 is assembled on the positioning mold 2, and then the third driving assembly 34 drives the first fluted disc 32 to rotate, so as to drive the wire funnel 1000 on the positioning mold 2 to rotate.

As shown in fig. 3 to fig. 6, the third driving assembly 34 in the present embodiment includes a third driver 341 fixed on the frame 1, and a second toothed disc 342 disposed at an output end of the third driver 341, wherein the second toothed disc 342 is engaged with the first toothed disc 32, and the third driver 341 can drive the second toothed disc 342 to rotate so as to drive the first toothed disc 32 to rotate; simple structure, the transmission mode is simple reliable.

As shown in fig. 5 to 8, the gear plate mounting portion 31 in this embodiment includes a plurality of bearing mounting seats 311 circumferentially disposed on the frame 1, each of the bearing mounting seats 311 is rotatably provided with a bearing 312, the first gear plate 32 is shaped like an annular gear plate, a bearing clamping portion 321 is disposed on an inner side surface of the first gear plate 32, the bearing clamping portion 321 is shaped like an annular ring, a first annular connecting portion extending outward is disposed on a bottom side of the bearing clamping portion 321, and the first gear plate 32 is fixedly disposed on the first annular connecting portion;

preferably, a rotating clamping groove 322 capable of being matched with the bearings 312 is formed in the inner side surface of the bearing clamping portion 321, when the first fluted disc 32 rotates, each bearing 312 can rotate in the rotating clamping groove 322, and the first fluted disc 32 is assisted to rotate by the bearing clamping portion 321, so that the stability of the rotation of the first fluted disc 32 is further improved;

preferably, still be equipped with second annular connecting portion on the medial surface of bearing joint portion 321, second annular connecting portion are located the top of rotating draw-in groove 322, mould installation portion 33 sets firmly in the top side of second annular connecting portion.

As shown in fig. 4 and fig. 9 to fig. 11, the second driving assembly 5 in this embodiment includes a sliding seat 51 and a second driver 52, the sliding seat 51 is slidably connected to the frame 1 along a moving direction of the lower welding electrode 7, the second driver 52 is fixedly arranged on the frame 1, an output end of the second driver 52 is connected to the sliding seat 51, an output end of the second driver 52 is capable of extending and retracting to drive the sliding seat 51 to slide on the frame 1 in a reciprocating manner, a fixed seat 53 is arranged on the sliding seat 51, when the second driver 52 drives the sliding seat 51 to move, the sliding seat 51 can drive the fixed seat 53 to move toward the positioning mold 2 to drive an outer side surface of the lower welding electrode 7 on the connecting rod 54 to approach or abut against an inner side of the wire funnel 1000, and the second driving assembly has a simple structure and a simple and reliable transmission manner;

preferably, the fixing seat 53 is provided with a mounting hole, the connecting rod 54 is detachably connected in the mounting hole, one end of the connecting rod 54 extends towards the positioning die 2 and is detachably connected with the lower welding electrode 7, and by adopting the design, the fixing seat 53, the connecting rod 54 and the lower welding electrode 7 can be detached and transported separately, so that the transportation volume is reduced, and the transportation cost is effectively reduced;

when the lower welding electrode 7 needs to be maintained or replaced, the lower welding electrode 7 can be detached from the connecting rod 54, when the connecting rod 54 needs to be maintained or replaced, the connecting rod 54 is detached from the fixing seat 53, and the lower welding electrode 7 can be detached from the connecting rod 54.

As shown in fig. 4 and 9 to 11, the frame 1 in this embodiment is provided with a connecting seat 11, the connecting seat 11 is provided with an oriented sliding rail 12, and the sliding seat 51 is provided with a sliding block 511 corresponding to the oriented sliding rail 12; the slider plays spacing effect with directional slide rail, improves the precision that the sliding seat removed on the connecting seat, avoids the sliding seat to produce the shake at the in-process that moves on the frame to influence the welding effect of fixed welding subassembly to the product.

As shown in fig. 3, fig. 5, fig. 6 and fig. 12, the frame 1 in this embodiment is further provided with a telescopic fixing assembly 6 for preventing the lower welding electrode 7 from shaking during the welding process, the telescopic fixing assembly 6 includes two sets of fixing pads 61 slidably connected to the frame 1, and a fourth driver 62 connected to each of the fixing pads 61, the two sets of fixing pads 61 are respectively located at two sides of the lower welding electrode 7,

as shown in fig. 10, specifically, when the outer side surface of the lower welding electrode 7 abuts against the wire leakage 1000, the bottom of the lower welding electrode 7 is slightly higher than the top of the fixed spacers 61, and at this time, each of the fourth drivers 62 drives the corresponding fixed spacer 61 to move to the lower side of the lower welding electrode 7 (specifically, two fixed spacers are close to each other), so that the top surface of the fixed spacer 61 is close to or abuts against the bottom of the lower welding electrode 7, when the upper welding electrode 4 is matched with the lower welding electrode 7, the fixed spacer 61 can abut against the lower welding electrode 7, so as to prevent the acting force generated when the upper welding electrode 4 is matched with the lower welding electrode 7 from moving the lower welding electrode 7 in the direction away from the positioning mold 2, so as to avoid the lower welding electrode 7 from shaking up and down, and ensure the welding effect of the fixed welding assembly on the wire leakage.

The utility model discloses a line leaks automatic welding machine's theory of operation does: assembling a positioning die to a die mounting part, assembling a wire leakage to the positioning die, starting a wire leakage welding unit, driving a second gear disc to rotate by a third driver so as to drive a first gear disc to rotate, so as to drive the wire leakage to adjust the position on a rack, driving a sliding seat to slide on the rack in the direction close to the positioning die after the position on the wire leakage, which needs to be welded, rotates to a specified position, so as to drive a lower welding electrode on a fixed seat to move to the position abutting against the wire leakage, wherein the bottom of the lower welding electrode is higher than the top of the fixed gasket, driving two fixed gaskets to mutually approach by a fourth driver so as to be positioned at the bottom of the lower welding electrode, and then driving corresponding upper welding electrodes to respectively move in the direction close to the wire leakage by each first driver and to be matched with the lower welding electrode, so as to circularly weld the wire leakage, wherein after the welding procedure is completed by the matching of each upper welding electrode and the lower welding electrode, each first driver can drive the corresponding upper welding electrode to reset to the initial position immediately;

when the pair of wire leaks are welded, the fourth driver drives the two fixing gaskets to be away from each other, so that the two fixing gaskets exit from the bottom of the lower welding electrode, then the second driver drives the sliding seat to slide on the rack in the direction away from the positioning die, so that the lower welding electrode on the fixing seat is driven to be away from the wire leak, then the third driver drives the second gear disc to rotate, the position needing to be welded on the upper portion and the lower portion of the wire leak is driven to rotate to the designated position, a next round of welding process is prepared, and circulation is formed.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a line leaks automatic welder, includes frame (1), its characterized in that: be equipped with on frame (1) and be used for the assembly line to leak positioning die (2) of (1000), be used for driving positioning die (2) rotatory with the adjustment line leak rotary mechanism (3) of (1000) welding position, be used for leaking (1000) to the line on positioning die (2) and carry out welded last welding electrode (4) and welding electrode (7) down, it is located the outside that the line leaked (1000) to go up welding electrode (4), welding electrode (7) are located the inboard that the line leaked (1000) down, still be equipped with on frame (1) and be used for driving to go up welding electrode (4) and be close to or keep away from the first drive assembly that the line leaked (1000) to and be used for driving down welding electrode (7) and be close to or keep away from second drive assembly (5) that the line leaked (1000).

2. The automatic wire leakage welding machine as claimed in claim 1, wherein: the number of the upper welding electrodes (4) is multiple, the first driving assemblies correspond to the upper welding electrodes (4) one by one, and the outer arc surfaces of the upper welding electrodes (4) leaking (1000) along the line are arranged in an arc shape.

3. The machine of claim 2, wherein: the radian of the welding surface of the upper welding electrodes (4) is similar to or identical to that of the welding outer arc surface of the line leakage (1000).

4. The machine of claim 2, wherein: the welding machine is characterized in that a portal frame (13) is arranged on the rack (1), the first driving assembly is a first driver (8) fixedly arranged on the portal frame (13), and the upper welding electrode (4) is arranged at the output end of the corresponding first driver (8).

5. The automatic wire leakage welding machine as claimed in claim 1, wherein: rotary mechanism (3) is including setting firmly fluted disc installation department (31) on frame (1), it is connected with first fluted disc (32) to rotate on fluted disc installation department (31), be equipped with mould installation department (33) that are used for installing positioning die (2) on first fluted disc (32), still be equipped with on frame (1) and be used for driving first fluted disc (32) pivoted third drive assembly (34).

6. The automatic wire-leakage welding machine as claimed in claim 5, wherein: the third driving assembly (34) comprises a third driver (341) fixedly arranged on the frame (1) and a second fluted disc (342) arranged at the output end of the third driver (341), the second fluted disc (342) is meshed with the first fluted disc (32), and the third driver (341) can drive the second fluted disc (342) to rotate so as to drive the first fluted disc (32) to rotate.

7. The automatic wire-leakage welding machine as claimed in claim 5, wherein: fluted disc installation department (31) include a plurality of bearing installation seat (311) that circumference set up in frame (1), each bearing installation seat (311) on rotate and be provided with bearing (312), the inboard of first fluted disc (32) is equipped with bearing joint portion (321), be equipped with on the inboard of bearing joint portion (321) with bearing (312) complex rotation draw-in groove (322), mould installation department (33) set firmly in the top of bearing joint portion (321).

8. The automatic wire leakage welding machine as claimed in claim 1, wherein: second drive assembly (5) include sliding seat (51) of moving direction sliding connection on frame (1) along welding electrode (7) down and set firmly second driver (52) on frame (1), the output and the sliding seat (51) of second driver (52) are connected for drive sliding seat (51) are close to or keep away from positioning die (2), be equipped with fixing base (53) on sliding seat (51), be equipped with the mounting hole on fixing base (53), detachably is connected with connecting rod (54) in the mounting hole, the one end of connecting rod (54) is extended towards the direction department of positioning die (2) to be connected with welding electrode (7) down, work as when second driver (52) drive fixing base (53) are toward being close to positioning die (2) direction and move, can leak (1000) counterbalance with the line with the lateral surface of welding electrode (7) down.

9. The machine of claim 8, wherein: the machine frame is characterized in that a connecting seat (11) is arranged on the machine frame (1), an oriented sliding rail (12) is arranged on the connecting seat (11), and a sliding block (511) corresponding to the oriented sliding rail (12) is arranged on the sliding seat (51).

10. The automatic wire leakage welding machine as claimed in claim 1, wherein: the welding machine is characterized in that a telescopic fixing component (6) used for preventing the lower welding electrode (7) from shaking during a welding process is further arranged on the rack (1), the telescopic fixing component (6) comprises two groups of fixing gaskets (61) which are connected to the rack (1) in a sliding mode and a fourth driver (62) which is connected with each fixing gasket (61), the two groups of fixing gaskets (61) are located on two sides of the lower welding electrode (7) respectively, and when the outer side face of the lower welding electrode (7) is abutted to the line leakage (1000), each fourth driver (62) can drive the corresponding fixing gasket (61) to move to the lower portion of the lower welding electrode (7) so that the top face of each fixing gasket (61) is close to or abutted to the bottom of the lower welding electrode (7).