阅读说明：本技术 一种电阻焊机 (Resistance welding machine ) 是由 许志远 孟祥平 于 2021-09-15 设计创作，主要内容包括：本发明涉及焊接设备技术领域,尤其是涉及一种电阻焊机,包括底座,所述底座的上端外表面左侧的位置固定连接有控制台,所述底座的上端外表面右侧的位置固定连接有导向台,所述导向台的内表面前后两侧均开设有滑槽一,所述滑槽一的内表面滑动连接有滑块一,所述滑块一远离滑槽一的一侧外表面固定连接有活动块,所述活动块的内部嵌入式连接有轴承一,该装置结构不仅能够针对不同尺寸大小的圆柱形油桶进行更好的支撑固定,方便对其外表面进行焊接,而且还能够对不同尺寸的直板型金属板进行更好的支撑和限位,既大大的提高了焊接质量,减小了使用者的劳动强度,又有效的降低了使用者被烫伤的几率,整体结构简单,实用性强。(The invention relates to the technical field of welding equipment, in particular to a resistance welding machine, which comprises a base, wherein a control console is fixedly connected to the left side of the outer surface of the upper end of the base, a guide table is fixedly connected to the right side of the outer surface of the upper end of the base, first sliding grooves are formed in the front side and the rear side of the inner surface of the guide table, a first sliding block is connected to the inner surface of the first sliding groove in a sliding manner, a movable block is fixedly connected to the outer surface of one side of the first sliding block, which is far away from the first sliding groove, and a first bearing is connected to the inner part of the movable block in an embedded manner, so that the structure of the device not only can better support and fix cylindrical oil drums with different sizes and is convenient to weld the outer surface of the cylindrical oil drums, but also can better support and limit straight metal plates with different sizes, thereby greatly improving the welding quality and reducing the labor intensity of users, but also effectively reduces the probability of scalding the user, and has simple integral structure and strong practicability.)

1. A resistance welder, includes base (1), its characterized in that: the left side of the outer surface of the upper end of the base (1) is fixedly connected with a control console (2), the right side of the outer surface of the upper end of the base (1) is fixedly connected with a guide console (3), the front side and the rear side of the inner surface of the guide console (3) are respectively provided with a first sliding chute (4), the inner surface of the first sliding chute (4) is slidably connected with a first sliding block (41), the outer surface of one side, away from the first sliding chute (4), of the first sliding block (41) is fixedly connected with a movable block (5), the interior of the movable block (5) is connected with a first embedded bearing (6), the left side of the movable block (5) is provided with a fixing mechanism (7), and the outer surface of the right side of the control console (2) is fixedly connected with a support assembly (15);

the fixing mechanism (7) comprises a rotating block (71), a limiting rod (72), a fixing block (73), a moving block (74), a spring (75), a movable hole (76), a guide rod (77), a handle (78), a connecting frame (79) and a supporting block (710), wherein the inner surface of the bearing I (6) is fixedly connected with the rotating block (71), the limiting rod (72) is fixedly connected to the center of the outer surface of the left side of the rotating block (71), the fixing block (73) is fixedly connected to the position, close to the left end, of the outer surface of the ring of the limiting rod (72), the moving block (74) is sleeved at the position, close to the right side of the fixing block (73), of the outer surface of the ring of the limiting rod (72), the spring (75) is sleeved at the position, close to the right side of the moving block (74), and the left end of the spring (75) is fixedly connected with the moving block (74), the other end of the movable block is fixedly connected with the rotating block (71), movable holes (76) are symmetrically formed in the front side and the rear side of the outer surface of the left side of the rotating block (71), guide rods (77) are fixedly connected to the outer surface of the right end of the movable block (74) and the positions, corresponding to the movable holes (76), of the movable block (76), the guide rods (77) penetrate through the movable holes (76), handles (78) are fixedly connected to the outer surface of the right end of the guide rods (77), connecting frames (79) are hinged to the outer surfaces of the periphery of the movable block (74) and the periphery of the fixed block (73), the number of the connecting frames (79) is eight, every two of the connecting frames (79) are in one group, and one end, far away from the limiting rod (72), of each group of the connecting frame (79) is hinged to a supporting block (710).

2. A resistance welder according to claim 1, characterized in that: the number of the supporting blocks (710) is four, the supporting blocks (710) are distributed at equal intervals around the circumference by taking the limiting rod (72) as a central shaft, the supporting blocks are all in arc-shaped structural design, the outer surface of one side, away from the limiting rod (72), of each supporting block (710) is fixedly connected with a high-temperature-resistant rubber sheet, and each group of connecting frames (79) is in triangular structural design with the limiting rod (72).

3. A resistance welder according to claim 1, characterized in that: the right-hand member surface of movable block (5) uses gag lever post (72) to be center pin symmetry fixedly connected with stopper (8), gear (9) have been cup jointed to the surface of guide arm (77) near the position on movable block (5) right side, ring channel (91) have been seted up to the left side surface of gear (9), stopper (8) extend into inside ring channel (91), and both match each other and sliding connection, the right-hand member surface of movable block (5) is close to the position embedded bearing two (10) that is connected with of lower extreme, the internal surface fixedly connected with crank (11) of bearing two (10), the surface left side position fixedly connected with gear two (12) of crank (11), gear two (12) are connected with gear (9) meshing.

4. A resistance welder according to claim 1, characterized in that: the diameter of the first gear (9) is larger than that of the second gear (12), the limiting block (8) and the annular groove (91) are both in T-shaped structural design, and the limiting block and the annular groove are matched with each other and are in sliding connection.

5. A resistance welder according to claim 1, characterized in that: the utility model discloses a slide block, including the internal surface of movable block (5), the equal embedded bearing three (13) that is connected with in position that both ends are close to the rear end about the internal surface of movable block (5), the internal surface fixed connection of bearing three (13) has threaded rod (14), threaded rod (14) run through movable block (5), and both match each other and threaded connection, spout (4) are T type structural design with slider (41).

6. A resistance welder according to claim 1, characterized in that: the support assembly (15) comprises a support plate (151), a support frame (152), a second sliding groove (153), a second sliding block (154), a threaded hole (155), a bolt (156) and a rotating wheel (157), the support frame (152) is fixedly connected to the middle position of the outer surface of the lower end of the support plate (151), the other end of the support frame (152) is fixedly connected with the console (2), the support plate (151) and the support frame (152) are designed in a triangular structure, the second sliding groove (153) is formed in the outer surface of the upper end of the support plate (151), the second sliding block (154) is connected to the inner surface of the second sliding groove (153) in a sliding mode, the two sliding blocks are matched with each other in a T-shaped structure, the threaded hole (155) is formed in the second sliding block (154), the bolt (156) is connected to the inner surface of the threaded hole (155), and the upper half part of the second sliding block (154) is in a cylindrical structure, and the annular outer surface of the rotating sleeve is rotatably sleeved with a rotating wheel (157).

Technical Field

The invention relates to the technical field of welding equipment, in particular to a resistance welding machine.

Background

Resistance welding is a welding apparatus that performs welding by using the principle of resistance heating, and generally, resistance welding is a welding method in which workpieces are connected by melting a contact surface between the two workpieces by resistance heat generated when current passes through the workpieces under the action of a certain electrode pressure. Resistance welders can be classified into different categories according to different uses and requirements. From the welding method classification, spot welding machine, seam welding machine, projection welding machine and butt welding machine, etc.: the pressurizing forms of the electrodes are classified into a lever type, an electric cam type, a pneumatic type, a hydraulic type, a combined pneumatic and hydraulic type and the like; the welding current types of the resistance welding machines are classified into a single-phase power frequency welding machine, a secondary rectification welding machine, a three-phase low-frequency welding machine, a capacitance energy storage welding machine, an inverter power supply welding machine and the like. The resistance welder mainly comprises a main circuit part, a pressure transmission part and a control part;

a seam welder for welding the cylindrical oil drum of electric resistance welder features that the seam welder is composed of two rotary wheel electrodes between two rotary wheel electrodes for pressurizing the welded part and rotating it, and the rotary wheel electrodes are used to continuously or intermittently supply electric pulses to form a continuous seam, which can be widely used for welding the sealed oil drum of oil drum, can, radiator, airplane, oil tank, jet engine, rocket, or missile, the labor intensity of workers is increased, the working efficiency is reduced, and the whole structure needs to be improved.

To this end, a resistance welder is proposed.

Disclosure of Invention

The present invention is directed to a resistance welding machine to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a resistance welding machine comprises a base, wherein a control console is fixedly connected to the left side of the outer surface of the upper end of the base, a guide table is fixedly connected to the right side of the outer surface of the upper end of the base, a first sliding groove is formed in each of the front side and the rear side of the inner surface of the guide table, a first sliding block is connected to the inner surface of the first sliding groove in a sliding mode, a movable block is fixedly connected to the outer surface of one side, away from the first sliding groove, of the first sliding block, a first bearing is connected to the inner portion of the movable block in an embedded mode, a fixing mechanism is arranged on the left side of the movable block, and a supporting assembly is fixedly connected to the outer surface of the right side of the control console;

the fixing mechanism comprises a rotating block, a limiting rod, a fixing block, a moving block, a spring, a movable hole, a guide rod, a handle, a connecting frame and a supporting block, the rotating block is fixedly connected to the inner surface of the first bearing, the limiting rod is fixedly connected to the center of the outer surface of the left side of the rotating block, the fixing block is fixedly connected to the position, close to the left end, of the annular outer surface of the limiting rod, the moving block is sleeved on the position, close to the right side of the fixing block, of the annular outer surface of the limiting rod, the spring is sleeved on the position, close to the right side of the moving block, of the annular outer surface of the limiting rod, the left end of the spring is fixedly connected with the moving block, the other end of the spring is fixedly connected with the rotating block, the movable holes are symmetrically formed in the front side and the back side of the outer surface of the left side of the rotating block, the guide rod is fixedly connected to the positions, corresponding to the movable holes, and penetrates through the movable holes, the outer surface of the right end of the guide rod is fixedly connected with a handle, the moving block and the peripheral outer surfaces of the fixed block are hinged with connecting frames, the number of the connecting frames is eight, every two of the eight connecting frames form a group, and one end, away from the limiting rod, of each group of the connecting frames is hinged with a supporting block.

Preferably, the number of the supporting blocks is four, the supporting blocks are distributed at equal intervals around the central shaft by using the limiting rod, the supporting blocks are all in arc-shaped structural design, the outer surface of one side, away from the limiting rod, of each supporting block is fixedly connected with a high-temperature-resistant rubber sheet, and each group of connecting frames is in triangular structural design with the limiting rod.

Preferably, the right-hand member surface of movable block uses the gag lever post as center pin symmetry fixedly connected with stopper, gear one has been cup jointed to the surface of guide arm near the position on movable block right side, the ring channel has been seted up to gear one's left side surface, inside the stopper extended into the ring channel, and both match each other and sliding connection, the right-hand member surface of movable block is close to the position embedded bearing two that is connected with of lower extreme, the internal surface fixedly connected with crank of bearing two, the surface left side position fixedly connected with gear two of crank, gear two is connected with the meshing of gear one.

Preferably, the diameter of the first gear is larger than that of the second gear, the limiting block and the annular groove are both designed to be T-shaped structures, and the limiting block and the annular groove are matched with each other and are in sliding connection.

Preferably, the position that both ends are close to the rear end about the internal surface of movable block is all embedded to be connected with bearing three, bearing three's internal surface fixedly connected with threaded rod, the threaded rod runs through the movable block, and its both match each other and threaded connection, spout one is T type structural design with slider one.

Preferably, the supporting component comprises a supporting plate, a supporting frame, a second sliding groove, a second sliding block, a threaded hole, a bolt and a rotating wheel, the supporting frame is fixedly connected with the middle position of the outer surface of the lower end of the supporting plate, the other end of the supporting frame is fixedly connected with the control console, the supporting plate and the supporting frame are designed in a triangular structure, the second sliding groove is formed in the outer surface of the upper end of the supporting plate, the second sliding block is connected with the second sliding block in a sliding mode, the second sliding block and the second sliding block are in T-shaped structure mutual matching, the threaded hole is formed in the second sliding block, the bolt is connected with the inner surface of the threaded hole, the upper half part of the second sliding block is of a cylindrical structure, and the rotating wheel is sleeved on the annular outer surface of the second sliding block.

Compared with the prior art, the invention has the beneficial effects that:

1. by adding the fixing mechanism into the device, oil drums with different sizes can be supported and fixed, the labor intensity of workers is effectively reduced, the welding efficiency is improved, and the welding quality is ensured;

2. through adding a series of structural components such as a crank, a gear I, a gear II and the like into the device, a user can drive the oil drum to rotate by rotating the crank, so that the user can weld the outer surface of the oil drum greatly, workers do not need to hold a heavy oil drum and can be prevented from being scalded by keeping away from a welding area, the labor intensity of the workers is reduced, and the personal safety of the workers is ensured;

3. through adding supporting component in the device, when needs weld straight plate type metal sheet, can carry out effectual propping through supporting component to the metal sheet and drag with spacing, improved welded efficiency and quality greatly, alleviateed staff's work burden, can also weld the metal sheet of different sizes, overall structure is simple, and the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a front view of FIG. 1 of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3 in accordance with the present invention;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4 in accordance with the present invention;

FIG. 6 is a combination view of a first gear of the present invention with an annular groove;

fig. 7 is a combined view of the bolt and the second sliding block.

Description of reference numerals:

1. a base; 2. a console; 3. a guide table; 4. a first sliding chute; 41. a first sliding block; 5. a movable block; 6. a first bearing; 7. a fixing mechanism; 71. rotating the block; 72. a limiting rod; 73. a fixed block; 74. a moving block; 75. a spring; 76. a movable hole; 77. a guide bar; 78. a grip; 79. a connecting frame; 710. a support block; 8. a limiting block; 9. a first gear; 91. an annular groove; 10. a second bearing; 11. a crank; 12. a second gear; 13. a third bearing; 14. a threaded rod; 15. a support assembly; 151. a support plate; 152. a support frame; 153. a second chute; 154. a second sliding block; 155. a threaded hole; 156. a bolt; 157. a rotating wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a technical solution:

a resistance welding machine comprises a base 1, wherein a control console 2 is fixedly connected to the left side of the outer surface of the upper end of the base 1, a guide table 3 is fixedly connected to the right side of the outer surface of the upper end of the base 1, sliding grooves I4 are formed in the front side and the rear side of the inner surface of the guide table 3, a sliding block I41 is slidably connected to the inner surface of the sliding groove I4, a movable block 5 is fixedly connected to the outer surface of one side, away from the sliding groove I4, of the sliding block I41, a bearing I6 is connected to the inner portion of the movable block 5 in an embedded mode, a fixing mechanism 7 is arranged on the left side of the movable block 5, and a supporting assembly 15 is fixedly connected to the outer surface of the right side of the control console 2;

the fixing mechanism 7 comprises a rotating block 71, a limiting rod 72, a fixed block 73, a moving block 74, a spring 75, a moving hole 76, a guide rod 77, a handle 78, a connecting frame 79 and a supporting block 710, the inner surface of the bearing 6 is fixedly connected with the rotating block 71, the central position of the outer surface of the left side of the rotating block 71 is fixedly connected with the limiting rod 72, the position of the outer surface of the ring of the limiting rod 72, which is close to the left end, is fixedly connected with the fixed block 73, the position of the outer surface of the ring of the limiting rod 72, which is close to the right side of the fixed block 73, is sleeved with the moving block 74, the position of the outer surface of the ring of the limiting rod 72, which is close to the right side of the moving block 74, is sleeved with the spring 75, the left end of the spring 75 is fixedly connected with the moving block 74, the other end of the spring is fixedly connected with the rotating block 71, the front and back sides of the outer surface of the left side of the rotating block 71 are symmetrically provided with the moving hole 76, the outer surface of the right end of the moving block 74 is fixedly connected with the guide rod 77, which corresponds to the moving hole 76, the guide rod 77 penetrates through the movable hole 76, a handle 78 is fixedly connected to the outer surface of the right end of the guide rod 77, the outer surfaces of the periphery of the moving block 74 and the periphery of the fixed block 73 are respectively hinged with eight connecting frames 79, every two of the eight connecting frames 79 form a group, and one end, away from the limiting rod 72, of each group of the connecting frames 79 is hinged with a supporting block 710.

By adopting the technical scheme, when the outer surface of the cylindrical oil drum needs to be welded, a user only needs to hold the handle 78 and pull the handle to the right side, then the guide rod 77 drives the moving block 74 to move to the right side along the limiting rod 72, the spring 75 is extruded when the moving block 74 moves to the right side, an elastic force is applied to the spring 75, the bottom end of the connecting frame 79 connected with the moving block 74 is driven to move to the right side in the process that the moving block 74 moves to the right side, the supporting block 710 is driven to approach the limiting rod 72, the diameter of the whole fixing mechanism 7 can be reduced, then the oil drum is sleeved on the outer surface of the supporting block 710, the position of the oil drum is adjusted, the welding position of the oil drum is positioned between two electrode rollers, the handle 78 is loosened, the moving block 74 is driven to move to the left side under the action of the elastic force of the spring 75, the bottom end of the connecting frame 79 connected with the moving to the left side is driven to move to be close to the connecting frame 79 fixedly connected with the fixing block 73, can push away supporting shoe 710 to keeping away from gag lever post 72 department, slowly with the contact of oil drum inner wall, it is fixed to support it, welded stability has been improved greatly, do not need the manual work to grip it, staff's intensity of labour has been reduced, the effectual work efficiency that has improved, when needs weld straight plate metal sheet, can carry out effectual propping to the metal sheet through supporting component 15 and drag and spacing, welded efficiency and quality have been improved greatly, staff's work burden has been alleviateed, can also weld not unidimensional oil drum and straight plate metal sheet, overall structure is simple, therefore, the clothes hanger is strong in practicability.

As an embodiment of the present invention, as shown in fig. 2 and 4, the number of the support blocks 710 is four, the four support blocks 710 are circumferentially and equidistantly distributed with the limiting rod 72 as a central axis, and are all designed in an arc structure, the outer surfaces of the four support blocks 710 on the side away from the limiting rod 72 are all fixedly connected with high temperature resistant rubber sheets, and each group of the connecting frames 79 and the limiting rod 72 are designed in a triangular structure.

By adopting the technical scheme, the supporting blocks 710 are contacted with the inner wall of the oil drum more closely, the friction force between the supporting blocks 710 and the oil drum is effectively increased by adding the high-temperature resistant rubber sheets, the occurrence of the slipping phenomenon in the welding process is reduced, the elastic high-temperature resistant rubber sheets can prevent the supporting blocks 710 from being directly contacted with the inner wall of the oil drum, the abrasion is avoided, the quality of finished products is ensured, the fixing effect on the oil drum is greatly improved by arranging the four supporting blocks 710, because each group of connecting frames 79 and the limiting rod 72 are designed to be in a triangular structure, when the moving block 74 moves leftwards and is close to the fixing block 73, the lengths of the two connecting frames 79 are unchanged, the bottom end distance is shortened, the height of the whole triangular structure is increased, the oil drum can be expanded and fixed in the direction far away from the limiting rod 72, otherwise, the moving block 74 moves rightwards, and the supporting blocks 710 can move towards one side of the limiting rod 72, the oil drum is loosened, and the overall stability is high.

As an embodiment of the present invention, as shown in fig. 5 and 6, the outer surface of the right end of the movable block 5 is symmetrically and fixedly connected with a limit block 8 by taking the limit rod 72 as a central axis, the position of the outer surface of the guide rod 77, which is close to the right side of the movable block 5, is sleeved with a first gear 9, the outer surface of the left side of the first gear 9 is provided with an annular groove 91, the limit block 8 extends into the annular groove 91, and the two are matched with each other and slidably connected, the position of the outer surface of the right end of the movable block 5, which is close to the lower end, is embedded and connected with a second bearing 10, the inner surface of the second bearing 10 is fixedly connected with a crank 11, the position of the left side of the outer surface of the crank 11 is fixedly connected with a second gear 12, and the second gear 12 is engaged and connected with the first gear 9.

Through adopting the above-mentioned technical scheme, the user can drive two 12 rotations of gear through rotating crank 11, because gear 9 is connected with two 12 meshing of gear, then can drive gear 9 and rotate, and then drive fixing mechanism 7 through guide arm 77 and rotate, thereby the oil drum rotates thereupon, made things convenient for the user to weld the oil drum surface greatly, and the work efficiency is improved, the effectual staff that has avoided needs to grip heavier oil drum, and keep away from the welding area and can avoid the staff to be scalded, both reduced staff's intensity of labour, staff's personal safety has been guaranteed again.

As an embodiment of the present invention, as shown in fig. 5 and 6, the diameter of the first gear 9 is larger than that of the second gear 12, the limiting block 8 and the annular groove 91 are both designed in a T-shaped structure, and the two are matched with each other and slidably connected.

Through adopting above-mentioned technical scheme, when the staff rotated crank 11, drive two 12 rotations of gear, and then drive one 9 rotations of gear, drive gear wheel pivoted design through the pinion, be favorable to the rotational speed of staff control oil drum to each needs welded place to be welded completely in more accurate assurance, guaranteed the welded quality, and only need less power, can drive whole oil drum and 7 rotations of fixed establishment, reduced staff's intensity of labour.

As an embodiment of the present invention, as shown in fig. 5, a third bearing 13 is embedded and connected to positions, close to the rear end, of the upper end and the lower end of the inner surface of the movable block 5, a threaded rod 14 is fixedly connected to the inner surface of the third bearing 13, the threaded rod 14 penetrates through the movable block 5, the two are matched and in threaded connection, and the first sliding chute 4 and the first sliding block 41 are both designed in a T-shaped structure.

Through adopting above-mentioned technical scheme, the user can drive movable block 5 through rotatory threaded rod 14 and reciprocate, can fix to the oil drum of different internal diameters size, adjusts the height of oil drum, makes its outer wall that needs the welding be in between two electrode gyro wheels, has improved the device's practicality greatly, and spout 4 is T type structural design with slider 41, makes inseparabler that its both are connected, has guaranteed can not break away from each other at gliding in-process.

As an embodiment of the present invention, as shown in fig. 3 and 7, the supporting component 15 includes a supporting plate 151, a supporting frame 152, a second sliding slot 153, a second sliding block 154, a threaded hole 155, a bolt 156, and a rotating wheel 157, a supporting frame 152 is fixedly connected to the middle position of the outer surface of the lower end of the supporting plate 151, the other end of the supporting frame 152 is fixedly connected with the console 2, the control console 2, the supporting plate 151 and the supporting frame 152 are designed to be of a triangular structure, a second sliding groove 153 is formed in the outer surface of the upper end of the supporting plate 151, a second sliding block 154 is connected to the inner surface of the second sliding groove 153 in a sliding manner, the two are matched with each other in a T-shaped structure, a threaded hole 155 is arranged in the second sliding block 154, the inner surface of the threaded hole 155 is connected with a bolt 156 in a threaded manner, the upper half part of the second sliding block 154 is of a cylindrical structure, and the annular outer surface of the second sliding block is rotatably sleeved with a rotating wheel 157.

Through adopting above-mentioned technical scheme, when needs carry out sharp welding to straight plate type metal sheet, only need put it on backup pad 151, can effectually play the supporting role to the metal sheet, prop and drag without the manual work, staff's intensity of labour has been reduced, the one end that is close to runner 157 with the metal sheet laminates with runner 157 each other, play limiting displacement to the metal sheet, straight line welded effect has been guaranteed, it welds to remove the metal sheet, it rotates to drive runner 157, the effectual frictional force that reduces the metal sheet and remove the in-process, thereby welding quality has been improved greatly, and user's accessible rotates bolt 156 and fixes and loosen slider two 154, after loosening slider two 154, can adjust its position in spout two 153 insides, can carry on spacingly to the metal sheet of different sizes, the effectual welded quality of having guaranteed.

The working principle is as follows: when the outer surface of the cylindrical oil drum needs to be welded, a user only needs to hold the handle 78 and pull the handle to the right side, then the guide rod 77 drives the moving block 74 to move to the right side along the limiting rod 72, the spring 75 is extruded when the moving block 74 moves to the right side, an elastic force is applied to the spring 75, the bottom end of the connecting frame 79 connected with the moving block 74 is driven to move to the right side in the process that the moving block 74 moves to the right side, the supporting block 710 is driven to approach the limiting rod 72, the diameter of the whole fixing mechanism 7 can be reduced, then the oil drum is sleeved on the outer surface of the supporting block 710, the handle 78 is loosened, the moving block 74 is driven to move to the left side under the action of the elastic force of the spring 75, the bottom end of the connecting frame 79 connected with the moving block is driven to move to the left side, the connecting frame 79 fixedly connected with the fixing block 73 is mutually approached, and the supporting block 710 can be pushed to a position far away from the limiting rod 72, slowly contacts with the inner wall of the oil drum to support and fix the oil drum, the welding stability is greatly improved, the oil drum does not need to be manually held, the labor intensity of workers is reduced, the working efficiency is effectively improved, the threaded rod 14 can be rotated therewith, the threaded rod 14 is in threaded connection with the movable block 5 to drive the movable block 5 to move up and down along the first sliding chute 4, the height of the oil drum is adjusted according to the inner diameter of the welded oil drum, the outer wall needing to be welded is positioned between two electrode rollers, the seam welder starts to work, a user can drive the second gear 12 to rotate by rotating the crank 11, the first gear 9 is driven to rotate by being meshed with the second gear 12, the fixing mechanism 7 is driven to rotate by the guide rod 77, the oil drum rotates therewith, the welding on the outer surface of the oil drum by the user is greatly facilitated, and the heavy oil drum does not need to be held by the workers, and the worker can be prevented from being scalded far away from the welding area, thereby not only reducing the labor intensity of the worker, but also ensuring the personal safety of the worker, the design that the pinion drives the gear wheel to rotate is beneficial to the worker to control the rotating speed of the oil drum, thereby more accurately ensuring that each place needing to be welded is completely welded, ensuring the welding quality, and only needing small force to drive the whole oil drum and the fixing mechanism 7 to rotate, reducing the labor intensity of the worker, when the straight-line welding is needed to be carried out on the straight-plate type metal plate, only needing to put the straight-line type metal plate on the supporting plate 151, effectively supporting the metal plate, needing no manual support, reducing the labor intensity of the worker, mutually attaching one end of the metal plate close to the rotating wheel 157 with the rotating wheel 157, limiting the metal plate, and ensuring the effect of the straight-line welding, the moving metal plate is welded, the rotating wheel 157 is driven to rotate, friction force in the moving process of the metal plate is effectively reduced, welding quality is greatly improved, a user can fix and loosen the second sliding block 154 through the rotating bolt 156, after the second sliding block 154 is loosened, the position of the second sliding block 153 inside the sliding groove can be adjusted, the metal plate with different sizes can be limited, and welding quality is effectively guaranteed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.