CN212239843U

CN212239843U - Welding machine for electromechanical maintenance of automatic positioning workpiece

Info

Publication number: CN212239843U
Application number: CN202021246433.2U
Authority: CN
Inventors: 唐传胜; 靳果; 邱晓兰
Original assignee: Nanyang Institute of Technology
Current assignee: Nanyang Institute of Technology
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-12-29
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to a welding machine for electromechanical maintenance of an automatic positioning workpiece, which comprises a bottom plate, wherein the periphery of the top of the bottom plate is connected with a top plate through a plurality of supporting columns, and the lower part of the top plate is provided with a welding cooling unit capable of moving up and down; a welding slag collecting unit is arranged on the bottom plate corresponding to the bottom of the welding cooling unit; the two sides of the welding slag collecting unit are respectively provided with a plurality of movable positioning clamping parts for positioning and clamping the welding parts, and the bottoms of the movable positioning clamping parts are connected with a movable plate sleeved on a main shaft of a positioning motor through respective corresponding connecting rods; the welding part clamping device has the advantages of being simple in structure, reasonable in design, capable of conveniently clamping and fixing the welding part, cooling the welding part, preventing welding slag from splashing and capable of achieving uniform collection of the welding slag.

Description

Welding machine for electromechanical maintenance of automatic positioning workpiece

Technical Field

The utility model relates to the field of welding technology, specifically be an automatic location welding machine is used in electromechanical maintenance of work piece.

Background

The electromechanical maintenance work includes various maintenance modes, wherein welding is one of the commonly used maintenance modes in electromechanical maintenance, and the welding is usually completed by detaching relevant parts, placing the parts on a maintenance platform and welding the parts by a welding mechanism, and the electromechanical maintenance welding machine on the existing market still has certain defects: 1. some electromechanical maintenance welding machines cannot automatically position a workpiece, and need manual positioning, so that the working efficiency is low, the positioning accuracy cannot be ensured, and certain safety risk exists in the maintenance process; 2. after the welding operation of the workpiece is finished, the high temperature generated in the welding process cannot be quickly dissipated, so that the workpiece cannot be quickly taken down from the welding machine, and the working efficiency is low; 3. at present, welding slag is easy to splash in the process of maintaining the welding machine in an electromechanical way, so that the safety of welding operators is influenced, and the uniform collection of the welding slag is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides an automatic location welding machine for electromechanical maintenance of work piece has solved butt welder parts and needs artifical location and centre gripping, work efficiency low, the inaccurate nature in location, can't carry out the defect of unified collection to the welding slag.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a welding machine for electromechanical maintenance of an automatic positioning workpiece comprises a bottom plate, wherein the periphery of the top of the bottom plate is connected with a top plate through a plurality of supporting columns, and the lower part of the top plate is provided with a welding cooling unit capable of moving up and down; a welding slag collecting unit is arranged on the bottom plate corresponding to the bottom of the welding cooling unit; the two sides of the welding slag collecting unit are respectively provided with a plurality of movable positioning clamping parts for positioning and clamping the welding parts, and the bottoms of the movable positioning clamping parts are connected with movable plates sleeved on the main shaft of the positioning motor through corresponding connecting rods.

Preferably, the welding cooling unit comprises a transverse plate, and the bottom of the transverse plate is respectively provided with a welding machine and a refrigerating part; the refrigerating part comprises a refrigerating frame connected with the transverse plate, a refrigerating device is arranged on the refrigerating frame, the refrigerating device is connected with a cooling head through an air blower, and the air outlet tail end of the cooling head is arranged on one side between the welding machine and the welding part; the top of the transverse plate is connected with the lifting part.

Preferably, the lifting part comprises an adjusting motor arranged at the top of the top plate and two vertical rods with threads penetrating through the top plate and two sides of the transverse plate; a main shaft of the adjusting motor is connected with the top of one of the vertical rods through a coupling, and a belt is arranged between the upper parts of the two vertical rods; and a bearing is arranged between the two vertical rods and the corresponding top plate.

Preferably, the welding slag collecting unit comprises a mounting groove formed in the upper surface of the bottom plate, a collecting groove is formed in the mounting groove, a filter plate is arranged at the top of the collecting groove, and a magnetic plate matched with the collecting groove is fixedly arranged at the bottom of the mounting groove.

Preferably, the movable positioning clamping part comprises a base with an L-shaped section; the long edge of the L-shaped structure is arranged at the top of the bottom plate, a convex block is arranged in the middle of the bottom of the L-shaped structure, sliding blocks are respectively arranged on two sides of the convex block, the convex block penetrates through a long groove formed in the bottom plate to be connected with a connecting rod, and the sliding blocks are matched with a sliding groove formed in the upper surface of the bottom plate; the top of the support plate is provided with a support plate; a driving motor is arranged at the top of the short edge of the L-shaped structure, and a main shaft of the driving motor penetrates through the supporting plate to be connected with the middle part of the control plate; the front surface and the rear surface of the control plate are respectively provided with a plurality of arc-shaped limiting grooves which are correspondingly arranged; the surface of one side of the supporting plate, which is close to the control plate, is provided with a plurality of radioactive grooves; the front surface and the rear surface of the control plate are correspondingly provided with a connecting plate of an integrated structure in a movable clamping manner in an arc-shaped limiting groove, the inner side of the connecting plate is provided with a sliding positioning sliding block matched with the radioactive groove, and the outer side of the connecting plate is provided with a clamping plate of a bending structure.

Preferably, the arc-shaped limiting groove is distributed on the front surface and the rear surface of the control plate at equal angles, one end of the arc-shaped limiting groove is close to the center of the control plate, and the other end of the arc-shaped limiting groove extends towards the edge of the control plate.

Preferably, the tail end of the lower part of the clamping plate of the bending structure is provided with a buffer plate with a trapezoidal section for clamping the welding part.

Preferably, the front surface of the control plate is provided with six arc-shaped limiting grooves.

Preferably, an anti-scald shielding unit is further arranged between the front surfaces of the bottom plate and the top plate; the anti-scald shielding unit comprises a storage box arranged at the bottom of the top plate and a limiting fixed seat arranged at a corresponding position at the bottom of the storage box; the inside of receiver is equipped with the coil spring, and the top of coil spring is continuous with the limiting plate of taking the couple through preventing scalding the sunshade, and spacing fixing base is the J type structure of invering, and the bottom of spacing fixing base links to each other with the upper surface of bottom plate, the couple looks adaptation in the top of spacing fixing base and the limiting plate.

Preferably, the bottom of the bottom plate is provided with support legs around, a reinforcing rod is arranged between the corresponding support legs, and the middle of the reinforcing rod is fixedly connected with the bottom of the positioning motor.

According to the welding machine for electromechanical maintenance for automatically positioning the workpiece, the welding machine can adjust the upper position and the lower position by arranging the welding cooling unit, and the electromechanical equipment after welding is cooled, so that the electromechanical equipment is quickly disassembled; meanwhile, by arranging the movable positioning clamping part, the connecting plate slides along the radius direction under the limit of the supporting plate on the connecting plate through the rotation of the control plate, so that the clamping plate moves inwards or outwards, and automatic positioning and clamping of the welding part are facilitated; the movable plate is driven to rotate by the rotation of the positioning motor spindle, and the two movable positioning clamping parts are simultaneously pulled towards the middle through the connecting rod, so that the left side and the right side of the welded part are aligned and fixed, and the purpose of facilitating welding is achieved; the anti-scald shielding unit can be arranged to realize the purpose that welding slag is prevented from splashing to the body of a worker while an operator observes a welding part, and meanwhile, the welding slag collecting unit can realize the uniform collection of the welding slag; the welding part clamping device has the advantages of being simple in structure, reasonable in design, capable of conveniently clamping and fixing the welding part, cooling the welding part, preventing welding slag from splashing and capable of achieving uniform collection of the welding slag.

Drawings

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

FIG. 2 is a schematic structural view of the movable positioning and clamping portion of the present invention;

FIG. 3 is a schematic structural view of the welding slag collecting unit of the present invention;

FIG. 4 is a schematic view of the position relationship between the movable plate and the connecting rod of the present invention;

fig. 5 is a schematic structural view of the scald-proof shielding unit of the present invention;

fig. 6 is a schematic side view of the scald-proof shielding unit of the present invention;

fig. 7 is a schematic side view of the movable positioning clamp of the present invention;

fig. 8 is a schematic structural view of the support plate of the present invention.

In the figure: 1. a base plate; 2. a top plate; 3. a welding machine; 4. a blower; 5. a cooling head; 6. a refrigeration device; 7. a transverse plate; 8. a vertical rod; 9. a belt; 10. adjusting the motor; 11. a base; 12. a support plate; 13. a connecting plate; 14. a control panel; 15. an arc-shaped limiting groove; 16. a clamping plate; 17. a buffer plate; 18. a drive motor; 19. a connecting rod; 20. a movable plate; 21. positioning a motor; 22. collecting tank; 23. a magnetic plate; 24. a filter plate; 25. a storage box; 26. a coil spring; 27. an anti-scald shielding plate; 28. a limiting plate; 29. a limiting fixed seat; 30. a refrigeration frame; 31. a bump; 32. a slider; 33. a long groove; 34. a chute; 35. a radioactive recess; 36. positioning the sliding block; 37. a reinforcing bar; 38. and (7) supporting legs.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to FIGS. 1-8: the utility model relates to a welding machine for electromechanical maintenance of automatic positioning work piece, which comprises a bottom plate 1, wherein the periphery of the top of the bottom plate 1 is connected with a top plate 2 through a plurality of pillars, and the lower part of the top plate 2 is provided with a welding cooling unit capable of moving up and down; a welding slag collecting unit is arranged on the bottom plate 1 corresponding to the bottom of the welding cooling unit; a plurality of movable positioning clamping parts for positioning and clamping the welding part are arranged around the welding slag collecting unit, and the bottoms of the movable positioning clamping parts are connected with a movable plate 20 sleeved on a main shaft of a positioning motor 21 through corresponding connecting rods 19. The utility model realizes the fixation of the welding part through the positioning motor 21, the movable plate 20, the connecting rod 19 and the movable positioning clamping part, realizes the clamping of the welding part through the movable positioning clamping part, finally realizes the positioning of the welding part, and realizes the welding of the welding part and the cooling after the welding through the welding cooling unit; the purposes of fixing and accurately positioning the welding part, rapidly cooling and improving efficiency are achieved.

Further, the welding cooling unit comprises a transverse plate 7, and the bottom of the transverse plate 7 is provided with the welding machine 3 and a refrigerating part respectively; the refrigerating part comprises a refrigerating frame 30 connected with the transverse plate 7, a refrigerating device 6 is arranged on the refrigerating frame 30, the refrigerating device 6 is connected with a cooling head 5 through an air blower 4, and the air outlet tail end of the cooling head 5 is arranged on one side between the welding machine 3 and the welding part; the top of the transverse plate 7 is connected with the lifting part. The transverse plate 7 in the utility model is a base plate, which provides a mounting base for the welding machine 3 and the refrigeration part on one hand, and is convenient for mounting the lifting part to realize the lifting of the welding machine 3 and the refrigeration part on the other hand, and simultaneously, the utility model can rapidly cool the welded workpiece by mounting the refrigeration part to achieve the purpose of rapidly dismounting the workpiece; the utility model discloses in refrigerating plant 6 can be the air-cooler of internally mounted with the condenser pipe, and refrigerating plant 6 can directly purchase on market for current ripe technique, can realize the cooling of air can, its structure is no longer repeated.

Further, the lifting part comprises an adjusting motor 10 arranged at the top of the top plate 2 and two threaded vertical rods 8 penetrating through the top plate 2 and two sides of the transverse plate 7; a main shaft of the adjusting motor 10 is connected with the top of one vertical rod 8 through a coupler, and a belt 9 is arranged between the upper parts of the two vertical rods 8; and bearings are arranged between the two vertical rods 8 and the top plates 2 corresponding to the vertical rods respectively. The utility model discloses in two montants 8 and diaphragm 7 between be threaded connection, two montants 8 simultaneous rotations can be realized to the rotatory in-process of adjusting motor 10 to drive diaphragm 7 and go upward or down, thereby realized going upward or down of welding cooling unit.

Further, welding slag collecting unit is equipped with collecting vat 22 including establishing the mounting groove at bottom plate 1 upper surface, the inside of mounting groove, and collecting vat 22 top is provided with filter 24, the fixed magnetic sheet 23 that is provided with and collecting vat 22 looks adaptation in bottom of mounting groove. The magnetic plate 23 can fix the collecting groove 22 and the mounting groove more firmly and reliably, and the aim of convenient disassembly can be achieved; the utility model discloses in filter 24 be the fretwork setting to the filter residue can get into in collecting vat 22 smoothly.

Further, the movable positioning clamping part comprises a base 11 with an L-shaped section; the long edge of the L-shaped structure is arranged at the top of the bottom plate 1, a convex block 31 is arranged in the middle of the bottom of the L-shaped structure, sliding blocks 32 are respectively arranged on two sides of the convex block 31, the convex block 31 penetrates through a long groove 33 formed in the bottom plate 1 to be connected with the connecting rod 19, and the sliding blocks 32 are matched with sliding grooves 34 formed in the upper surface of the bottom plate 1; the top of which is provided with a supporting plate 12; the top of the short side of the L-shaped structure is provided with a driving motor 18, and the main shaft of the driving motor 18 passes through the supporting plate 12 and is connected with the middle part of the control plate 14; the front surface and the rear surface of the control plate 14 are respectively provided with a plurality of arc-shaped limiting grooves 15 which are correspondingly arranged; the surface of the support plate 12 close to one side of the control plate 14 is provided with a plurality of radioactive grooves 35; the front surface and the rear surface of the control plate 14 are correspondingly provided with arc-shaped limiting grooves 15 in which connecting plates 13 of an integrated structure are movably clamped, the inner sides of the connecting plates 13 are provided with sliding positioning sliders 36 matched with the radioactive grooves 35, and the outer sides of the connecting plates 13 are provided with clamping plates 16 of a bending structure. The movable positioning clamping part can be driven to move in the long groove 33 through the arrangement lug 31, and meanwhile, the sliding block 32 can slide in the sliding groove 34, so that the movement of the movable positioning clamping part is realized; meanwhile, when the control panel 14 rotates in the rotation process of the driving motor 18, the support plate 12 is fixed, and the connecting plate 13 is positioned by the radioactive groove 35 in the support plate 12 and moves along the arc-shaped limiting groove 15 under the condition that the control panel 14 rotates and the support plate 12 is fixed, and slides in the radioactive groove 35 while the connecting plate 13 moves, so that the clamping plates 16 are simultaneously folded or unfolded towards the center, and the clamping and fixing of the welding parts are realized.

Further, the arc-shaped limiting grooves 15 are distributed on the front surface and the rear surface of the control board 14 at equal angles, one end of each arc-shaped limiting groove 15 is close to the center of the control board 14, and the other end extends towards the edge of the control board 14. The arc-shaped limiting grooves 15 are distributed in a central equal angle mode, so that welding parts can be uniformly and effectively fixed; the arc-shaped limiting groove 15 can be limited to be closed or opened along the center of the control plate 14 in the movement process of the connecting plate 13.

Further, a buffer plate 17 with a trapezoidal section for clamping the welding component is arranged at the lower end of the clamping plate 16 of the bending type structure. The clamping welding part and the movable positioning clamping part can be tightly fixed by arranging the buffer plate 17, and the preferred buffer plate 17 is made of rubber products so as to prevent the welding part from being damaged in the clamping process.

Further, six arc-shaped limiting grooves 15 are formed in the front surface of the control plate 14. The number of front surface arc-shaped limiting grooves 15 in the control plate 14, the number of rear surface arc-shaped limiting grooves 15 in the control plate 14, the number of radioactive grooves 35, and the number of connecting plates 13 are the same.

Furthermore, an anti-scald shielding unit is arranged between the front surfaces of the bottom plate 1 and the top plate 2; the scald-proof shielding unit comprises a storage box 25 arranged at the bottom of the top plate 2 and a limiting fixed seat 29 arranged at a corresponding position at the bottom of the storage box 25; the inside of receiver 25 is equipped with coil spring 26, and the top of coil spring 26 is passed through the scald-proof sunshade 27 and is linked to each other with the limiting plate 28 of taking the couple, and spacing fixing base 29 is the J type structure of invering, and the bottom of spacing fixing base 29 links to each other with the upper surface of bottom plate 1, and the couple looks adaptation in the top of spacing fixing base 29 and the limiting plate 28. The scald-proof shielding unit in the utility model can collect the welding slag to avoid the welding slag from splashing around, and can prevent the welding slag from splashing to hurt people in the welding process; when the burn-proof shielding units are arranged on the front surfaces of the bottom plate 1 and the top plate 2, the burn-proof shielding units are mainly used for preventing welding slag from splashing to hurt people, and when the burn-proof shielding units are arranged around the bottom plate 1 and the top plate 2, the welding slag can be prevented from splashing, so that the welding slag can be conveniently collected; in the use process, the limiting plate 28 is held by a hand and pulled down, and the hook in the limiting plate 28 is hung in the limiting fixing seat 29 to realize fixation.

Furthermore, supporting legs 38 are respectively arranged on the periphery of the bottom plate 1, reinforcing rods 37 are arranged between the corresponding supporting legs 38, and the middle parts of the reinforcing rods 37 are fixedly connected with the bottom of the positioning motor 21. Not only can make utility model's structure more firm through setting up stiffener 37, can also realize effectively fixing positioning motor 21.

When the welding fixture is used, a part to be welded is placed between the two movable positioning clamping parts, the positioning motor 21 is started, and the two movable positioning clamping parts are close to the middle part and support the welding part; meanwhile, the welding part is placed between the clamping plates 16, the control plate 14 is driven to rotate by controlling the main shaft of the driving motor 18, and the connecting plate 13 drives the clamping plates 16 to fold under the positioning of the supporting plate 12 and the rotation of the control plate 14, so that the welding part can be automatically clamped and fixed, the accurate positioning is realized, and the welding of a workpiece is facilitated; during welding, the adjusting motor 10 is controlled to be started, so that the adjusting motor 10 drives the vertical rod 8 to rotate, the transverse plate 7 in threaded connection with the vertical rod 8 is controlled to move up and down, the transverse plate 7 drives the welding machine 3 to move downwards, the welding machine 3 performs welding work, after welding is finished, the air blower 4 is started, the refrigerating device 6 can cool air entering the air blower 4, the air blown out by the air blower 4 through the cooling head 5 is cold air, the welded workpiece is cooled through the cold air, and therefore the welded workpiece can be conveniently detached; before welding, the limiting plate 28 can be pulled downwards, so that the limiting plate 28 drives the anti-scalding shielding plate 27 to move downwards, the anti-scalding shielding plate 27 shields sparks during welding, splashing of the sparks is prevented, and the anti-scalding shielding plate 27 is made of transparent materials, so that welding operation cannot be influenced; during welding, the slag will fall onto the filter plate 24 above the collecting gutter 22 and eventually collect inside the collecting gutter 22, so that the welding slag is collected by the collecting gutter 22 and the welding slag inside the collecting gutter 22 is processed by detaching the collecting gutter 22.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an automatic welding machine is used in electromechanical maintenance of location work piece, this welding machine includes that the top of bottom plate (1), bottom plate (1) links to each other its characterized in that with roof (2) through a plurality of pillar all around: the lower part of the top plate (2) is provided with a welding cooling unit capable of moving up and down; a welding slag collecting unit is arranged on the bottom plate (1) corresponding to the bottom of the welding cooling unit; two sides of the welding slag collecting unit are respectively provided with a movable positioning clamping part for positioning and clamping the welding part, and the bottom of the movable positioning clamping part is connected with a movable plate (20) sleeved on a main shaft of a positioning motor (21) through respective corresponding connecting rods (19).

2. A welding machine for electromechanical maintenance with automatic positioning of the workpiece according to claim 1, characterized in that: the welding cooling unit comprises a transverse plate (7), and the bottom of the transverse plate (7) is provided with a welding machine (3) and a refrigerating part respectively;

the refrigerating part comprises a refrigerating frame (30) connected with the transverse plate (7), a refrigerating device (6) is installed on the refrigerating frame (30), the refrigerating device (6) is connected with the cooling head (5) through the air blower (4), and the air outlet tail end of the cooling head (5) is arranged on one side between the welding machine (3) and the welding part;

the top of the transverse plate (7) is connected with the lifting part.

3. A welding machine for electromechanical maintenance with automatic positioning of the workpiece according to claim 2, characterized in that: the lifting part comprises an adjusting motor (10) arranged at the top of the top plate (2) and two vertical rods (8) with threads penetrating through the top plate (2) and two sides of the transverse plate (7); a main shaft of the adjusting motor (10) is connected with the top of one vertical rod (8) through a coupling, and a belt (9) is arranged between the upper parts of the two vertical rods (8); a bearing is arranged between the two vertical rods (8) and the corresponding top plate (2).

4. A welding machine for electromechanical maintenance with automatic positioning of the workpiece according to claim 1, characterized in that: the welding slag collecting unit comprises a mounting groove formed in the upper surface of the bottom plate (1), a collecting groove (22) is formed in the mounting groove, a filtering plate (24) is arranged at the top of the collecting groove (22), and a magnetic plate (23) matched with the collecting groove (22) is fixedly arranged at the bottom of the mounting groove.

5. A welding machine for electromechanical maintenance with automatic positioning of the workpiece according to claim 1, characterized in that: the movable positioning clamping part comprises a base (11) with an L-shaped section;

the long edge of the L-shaped structure is arranged at the top of the bottom plate (1), a convex block (31) is arranged in the middle of the bottom of the L-shaped structure, sliding blocks (32) are respectively arranged on two sides of the convex block (31), the convex block (31) penetrates through a long groove (33) formed in the bottom plate (1) to be connected with the connecting rod (19), and the sliding blocks (32) are matched with a sliding groove (34) formed in the upper surface of the bottom plate (1); the top of the bracket is provided with a supporting plate (12);

a driving motor (18) is arranged at the top of the short side of the L-shaped structure, and a main shaft of the driving motor (18) penetrates through the supporting plate (12) to be connected with the middle part of the control plate (14); the front surface and the rear surface of the control plate (14) are respectively provided with a plurality of arc-shaped limiting grooves (15) which are correspondingly arranged; the surface of one side of the support plate (12) close to the control plate (14) is provided with a plurality of radioactive grooves (35);

the front surface and the rear surface of the control plate (14) are correspondingly provided with a connecting plate (13) in an integrated structure in an arc-shaped limiting groove (15) in a movable clamping manner, the inner side of the connecting plate (13) is provided with a sliding positioning slide block (36) matched with the radioactive groove (35), and the outer side of the connecting plate (13) is provided with a clamping plate (16) in a bending structure.

6. The electro-mechanical service welder of automatically positioning workpieces of claim 5, characterized in that: the arc-shaped limiting groove (15) is distributed on the front surface and the rear surface of the control plate (14) at equal angles in the center, one end of the arc-shaped limiting groove (15) is close to the center of the control plate (14), and the other end of the arc-shaped limiting groove extends to the edge of the control plate (14).

7. The electro-mechanical service welder of automatically positioning workpieces of claim 5, characterized in that: the tail end of the lower part of the clamping plate (16) of the bending type structure is provided with a buffer plate (17) which is used for clamping a welding part and has a trapezoidal section.

8. The electro-mechanical service welder of automatically positioning workpieces of claim 5, characterized in that: six arc-shaped limiting grooves (15) are formed in the front surface of the control plate (14).

9. A welding machine for electromechanical maintenance with automatic positioning of the workpiece according to claim 1, characterized in that: an anti-scald shielding unit is further arranged between the front surfaces of the bottom plate (1) and the top plate (2);

the anti-scald shielding unit comprises a storage box (25) arranged at the bottom of the top plate (2) and a limiting fixed seat (29) arranged at a corresponding position at the bottom of the storage box (25); the inside of receiver (25) is equipped with coil spring (26), and the top of coil spring (26) is passed through prevents scalding sunshade (27) and is linked to each other with limiting plate (28) of taking the couple, and spacing fixing base (29) are the J type structure of invering, and the bottom of spacing fixing base (29) links to each other with the upper surface of bottom plate (1), the couple looks adaptation in the top of spacing fixing base (29) and limiting plate (28).

10. A welding machine for electromechanical maintenance with automatic positioning of the workpiece according to claim 1, characterized in that: the bottom of the bottom plate (1) is provided with support legs (38) around, a reinforcing rod (37) is arranged between the corresponding support legs (38), and the middle part of the reinforcing rod (37) is fixedly connected with the bottom of the positioning motor (21).