CN217254002U - Tank spot welding device - Google Patents

Abstract

The utility model relates to a jar body processing equipment field specifically discloses a jar body spot welding device, include: the welding gun comprises a rack, a workbench, a side frame, a rotating roller assembly, an electromagnet, a first rotating seat, a first rotating sleeve, a second rotating seat, a second rotating sleeve, a moving assembly, a welding gun assembly, a first adjusting assembly, a second adjusting assembly, a protective cover assembly, a distance sensor, a second adjusting assembly, a controller and an infrared sensor assembly. The utility model can accurately position the welding part through the rotating roller component, the first rotating seat and the second rotating group, and can attract the welding part through the electromagnet to prevent the welding part from deforming and dislocating in the welding process; the distance sensor assembly is additionally arranged to assist the grating ruler in measuring the distance in real time, so that the positioning precision is prevented from being reduced due to the influence of the environment; the position of the gun head in the welding gun assembly can be conveniently adjusted through the first adjusting assembly, so that the gun head can be quickly positioned according to actual conditions.

Description

Tank spot welding device

Technical Field

The utility model belongs to jar body processing equipment field, in particular to jar body spot welding device.

Background

The pressure container tank is a common device in industrial production and life, and has higher requirements on the welding process and the welding quality because the pressure container tank needs to bear higher pressure; when welding the tank body of the gas tank, the gas tank is generally formed by fully welding the upper tank body and the lower tank body, but in order to ensure the precision and the welding quality in the full welding process, the joint of the upper tank body and the lower tank body is generally required to be subjected to spot welding in advance before welding.

The existing automatic spot welding device for the tank body generally has the following problems in the using process:

the positioning precision of spot welding is not high, the position of a welding gun is inconvenient to adjust, and the positioning precision of position elements such as a grating ruler and the like is easily influenced due to the severe welding working environment; the position of the welding gun head is inconvenient to adjust, and the like.

The above background disclosure is only provided to aid understanding of the inventive concepts and solutions of the present invention, and it does not necessarily pertain to the prior art of this patent application, and it should not be used to assess the novelty and inventive aspects of this application without explicit evidence that such contents are disclosed at the filing date of this patent application.

Disclosure of Invention

An object of the utility model is to provide a jar body spot welding device to it is not high to overcome current jar automatic spot welding device positioning accuracy of body, and the locating element easily receives the defect of the inconvenient regulation in position of the welding gun head that environmental condition influences and.

In order to achieve the above object, the utility model provides a jar body spot welding device, include: the device comprises a rack, a lifting mechanism and a lifting mechanism, wherein the rack comprises a workbench and a side frame, a plurality of supporting legs are arranged below the workbench, and the side frame is arranged on one side of the rack; the rotating roller assembly is arranged on the workbench and comprises two groups of rotating rollers which are parallel to each other and have a certain interval, and an electromagnet is arranged between the two rotating rollers; the first rotating seat and the second rotating seat are respectively arranged on two sides of the rotating roller component in a slidable mode and can be close to or far away from each other, a rotatable first rotating sleeve is arranged at one end, facing the rotating roller component, of the first rotating seat, a rotatable second rotating sleeve is arranged at one end, facing the rotating roller component, of the second rotating seat, and the axes of the first rotating sleeve and the second rotating sleeve are overlapped and are parallel to the axis of the rotating roller; the moving component is arranged on the side frame and comprises a connecting seat, and the connecting seat can move from the first rotating seat to the second rotating seat and can be close to or far away from the rotating roller component; the welding gun assembly comprises a gun head and a welding machine which are connected with each other, the gun head is connected with the connecting seat through a first adjusting assembly, the first adjusting assembly can adjust the position of the gun head in the horizontal direction and the vertical direction, a protective cover assembly is arranged on the periphery of the gun head and is fixedly connected with the connecting seat through a protective cover support, and the welding machine is fixedly installed on any one of the first rotating seat and the second rotating seat; the distance sensor assembly comprises a laser transmitter and a laser receiver which are matched with each other, the laser receiver is fixedly installed on the workbench, the laser transmitter is arranged on the protective cover bracket through a second adjusting assembly, and the second adjusting assembly can adjust the positions of the laser transmitter in the horizontal direction and the vertical direction so as to enable the laser transmitter and the laser receiver to be aligned with each other; the controller is fixedly arranged on the other one of the first rotating seat and the second rotating seat and is respectively and electrically connected with the first rotating seat, the second rotating seat, the distance sensor assembly and the electromagnet; the infrared sensor assembly comprises an infrared transmitter and an infrared receiver which are matched with each other, wherein the infrared transmitter and the infrared receiver are respectively arranged on the first rotating seat and the second rotating seat and are electrically connected with the controller.

Preferably, in the above technical scheme, a yielding ring groove is formed in the middle of each rotating roller.

Preferably, in the above technical scheme, one end of the electromagnet is fixedly connected with the workbench, the other end of the electromagnet is provided with an inward-recessed arc-shaped clamping groove, and the axis of the clamping groove is parallel to the axis of the rotary roller.

Preferably, in the above technical scheme, two sets of first guide rails are arranged on the workbench, each of the first guide rails is located on each of two sides of the rotating roller assembly, the first guide rails are parallel to the axis of the rotating roller, and the first rotating seat and the second rotating seat are slidably arranged on the first guide rails.

Preferably, among the above-mentioned technical scheme, first rotation seat with the periphery that the seat was rotated to the second is equipped with a protection casing respectively, protection casing fixed mounting is in on the workstation, two the relative one end of protection casing is equipped with the cover mouth, first rotation seat with the second rotates the seat and can follows respectively pass through in the cover mouth, the other end of protection casing fixed mounting respectively has the pneumatic cylinder, the expansion end of pneumatic cylinder respectively with first rotation seat with seat fixed connection is rotated to the second.

Preferably, in the above technical scheme, a sensor mounting seat is arranged on the workbench, a mounting groove is arranged in the sensor mounting seat, and the laser receiver is fixedly mounted in the mounting groove.

Preferably, in the above technical solution, the moving assembly further includes:

the fixed plate is fixedly arranged on the side frame, the plate surface of the fixed plate is perpendicular to the table surface of the workbench, a second guide rail is arranged on the plate surface of the fixed plate, and the axes of the second guide rail and the rotary roller are parallel to each other;

the movable seat is arranged on the second guide rail in a slidable manner, a third guide rail, a screw rod and a grating ruler which are parallel to each other are arranged on the movable seat, the connecting seat is arranged on the third guide rail and the grating ruler in a slidable manner, and the screw rod is in threaded connection with the connecting seat;

and the driving motor is fixedly arranged on the movable seat, and the output end of the driving motor is coaxially and fixedly connected with the end part of the screw rod.

Preferably, in the above technical solution, the first adjusting assembly includes: one end of the first connecting arm is fixedly connected with the connecting seat, and the other end of the first connecting arm extends to the other side of the rack; the first adjusting piece is fixedly arranged at the other end of the first connecting arm and comprises a first adjusting end and a first movable end which are horizontally arranged, and when the first adjusting end is rotated, the first movable end can be driven to horizontally move; one end of the second connecting arm is fixed with the first movable end, and the other end of the second connecting arm is vertically bent downwards; the second adjusting piece is fixedly installed at the other end of the second connecting arm and comprises a second adjusting end and a second movable end which are vertically arranged, when the second adjusting end is rotated, the second movable end can be driven to vertically move, and the gun head is fixedly installed on the second movable end.

Preferably, in the above technical solution, the shield support is provided with a first slot hole horizontally arranged, and a length direction of the first slot hole is directed from one side of the workbench to the other side of the workbench; the second adjustment assembly includes: the two ends of the first connecting plate are respectively arranged in the first slotted hole in a slidable manner, a second slotted hole which is horizontally arranged is formed in the first connecting plate, and the length direction of the second slotted hole is vertical to that of the first slotted hole; and one side of the second connecting plate is provided with a third slotted hole, the third slotted hole is connected with the second slotted hole through a bolt, the length directions of the third slotted hole and the second slotted hole are mutually vertical, and the laser emitter is arranged at the other end of the second connecting plate.

Preferably, in the above technical solution, the protective cover assembly includes: the protective cover is arranged around the gun head and fixedly connected with the protective cover bracket, and an observation port is formed in the protective cover; the cover cap is arranged at the observation port in an openable and closable manner, and the cover cap is provided with an observation window corresponding to the observation port.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the tank spot welding device in the utility model can accurately position the welding part through the rotating roller component, the first rotating seat and the second rotating group, and can attract the welding part through the electromagnet to prevent the welding part from deforming and dislocating in the welding process; the distance sensor assembly is additionally arranged to assist the grating ruler in measuring the distance in real time, so that the positioning precision is prevented from being reduced due to the influence of the environment; the position of the gun head in the welding gun assembly can be conveniently adjusted through the first adjusting assembly.

2. The utility model provides an infrared sensor subassembly can carry out the early warning to operation work area, when external object or operator go into work area at the welded in-process mistake, can play report and emergency braking's effect.

3. The utility model provides a ring groove of stepping down has been seted up at the middle part of rotation roller, can step down its solder joint with the welding is good at a welding pivoted in-process to prevent to take place to interfere at pivoted in-process welding, produce the dislocation.

4. The utility model provides an inwards sunken convex draw-in groove is seted up to the actuation department of electro-magnet, and it can laminate each other with the surface of the jar body better.

5. The utility model provides a first rotation seat and second rotate the periphery of seat and be provided with the protection casing, can play the effect of protection at the in-process that rotates the seat and remove.

6. The utility model provides a first regulating part and second regulating part among the first regulating assembly can carry out the regulation on vertical and horizontal direction to the position of the rifle head of butt welder to the setting of holding through first regulation end and second makes its in-process better regulation at the regulation.

7. The utility model provides a protection casing among the protection casing subassembly can play the effect of protection when the welding to not only can conveniently observe the condition of rifle head in the welding process through the shroud that sets up to have the observation window, but also can open the shroud, maintain the maintenance to the rifle head.

Drawings

Fig. 1 is a structural diagram of the spot welding device for a can body of the present invention.

Fig. 2 is a block diagram of the frame and its associated parts.

Fig. 3 is a structural view of the rotating roller assembly and the electromagnet.

FIG. 4 is a block diagram of the movement assembly and the welding gun assembly.

Description of the main reference numerals:

1-a frame, 11-a workbench, 12-a side frame, 13-supporting feet, 14-a first guide rail, 15-a protective cover, 16-a cover opening, 17-a hydraulic cylinder, 18-a sensor mounting seat and 181-a mounting groove;

2-rotating a roller assembly, 21-rotating a roller, 22-an electromagnet, 23-a abdicating ring groove and 24-a clamping groove;

3-a first rotating seat, 31-a first rotating sleeve;

4-a second rotating seat, 41-a second rotating sleeve;

5-a moving assembly, 51-a connecting seat, 52-a fixing plate, 53-a second guide rail, 54-a moving seat, 541-a third guide rail, 542-a screw rod, 543-a grating ruler and 55-a driving motor;

6-welding torch assembly, 61-torch head, 62-welding machine, 63-first adjusting assembly, 631-first connecting arm, 632-first adjusting piece, 633-first adjusting end, 634-first moving end, 635-second connecting arm, 636-second adjusting piece, 637-second adjusting end, 638-second moving end, 64-shield assembly, 641-shield, 642-viewing port, 643-cover, 644-viewing window, 65-shield support, 651-first slotted hole;

7-distance sensor assembly, 71-laser emitter, 72-laser receiver, 73-second adjustment assembly, 731-first connection plate, 732-second slot, 733-second connection plate, 734-third slot;

8-a controller;

9-infrared sensor assembly, 91-infrared transmitter, 92-infrared receiver.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The terms "first", "second" and "third", if any, are used for descriptive purposes only and for distinguishing between technical features and are not to be construed as indicating or implying relative importance or implying a number of indicated technical features or a precedence of indicated technical features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" 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 in specific cases to those skilled in the art. The following describes an embodiment of the present invention according to its overall structure.

As shown in fig. 1 to 4, the spot welding apparatus for can bodies in this embodiment includes: the welding gun comprises a frame 1, a workbench 11, a side frame 12, supporting legs 13, a first guide rail 14, a protective cover 15, a cover opening 16, a hydraulic cylinder 17, a sensor mounting seat 18, a mounting groove 181, a rotating roller assembly 2, a rotating roller 21, an electromagnet 22, a relief ring groove 23, a clamping groove 24, a first rotating seat 3, a first rotating sleeve 31, a second rotating seat 4, a second rotating sleeve 41, a moving assembly 5, a connecting seat 51, a fixing plate 52, a second guide rail 53, a moving seat 54, a third guide rail 541, a screw 542, a grating ruler 543, a driving motor 55, a welding gun assembly 6, a gun head 61, a welding machine 62, a first adjusting assembly 63, a first connecting arm 631, a first adjusting piece 632, a first adjusting end 633, a first movable end 634, a second 635 connecting arm, a second adjusting piece 636, a second adjusting end 637, a second movable end 638, a protective cover assembly 64, a protective cover 641, an observation opening 642, a cover 643 and an observation window 644, the protective cover comprises a protective cover bracket 65, a first slotted hole 651, a distance sensor assembly 7, a laser emitter 71, a laser receiver 72, a second adjusting assembly 73, a first connecting plate 731, a second slotted hole 732, a second connecting plate 733, a third slotted hole 734, a controller 8, an infrared sensor assembly 9, an infrared emitter 91 and an infrared receiver 92.

The rack 1 comprises a workbench 11 and side frames 12, wherein four corners below the workbench 11 are respectively provided with a straight supporting leg 13, one end of each side frame 12 is welded on the rear side of the rack 11, and the other end of each side frame 12 extends to the upper part of the workbench 11 and bends towards the front side; the rotary roller assembly 2 is arranged on the table top of the workbench 11, the rotary roller assembly 2 comprises two groups of mutually parallel rotary rollers 21, a certain interval is arranged between the two rotary rollers 21, an electromagnet 22 is arranged between the two rotary rollers 21, an inwards-concave abdicating annular groove 23 is formed in the middle of each rotary roller 21, one end of the electromagnet 22 is fixedly arranged on the workbench 11, an inwards-concave arc-shaped clamping groove 24 is formed in the other end of the electromagnet 22, the axis of the clamping groove 24 is mutually parallel to the axis of the rotary roller 21, and a suction part is arranged in the clamping groove 24; two groups of first guide rails 14 are respectively arranged on the workbench 11, the first guide rails 14 are respectively positioned at two sides of the rotating roller assembly 2, the first guide rails 14 are parallel to the axis of the rotating roller 21, and the first rotating seat 3 and the second rotating seat 4 are respectively arranged on the first guide rails 14 in a slidable manner; a rotatable first rotating sleeve 31 is arranged at one end of the first rotating seat 3 facing the rotating roller assembly 2, a rotatable second rotating sleeve 41 is arranged at one end of the second rotating seat 4 facing the rotating roller assembly 2, and the axes of the first rotating sleeve 31 and the second rotating sleeve 41 can be overlapped and are parallel to the axis of the rotating roller 21; the peripheries of the first rotating seat 3 and the second rotating seat 4 are respectively provided with a protective cover 15, the protective covers 15 are fixedly arranged on the workbench 11, one opposite ends of the two protective covers 15 are provided with cover openings 16, the first rotating seat 3 and the second rotating seat 4 can respectively pass through the cover openings 16, the other end of each protective cover 15 is respectively and fixedly provided with a hydraulic cylinder 17, and the movable end of each hydraulic cylinder 17 is respectively and fixedly connected with the first rotating seat 3 and the second rotating seat 4; a sensor mounting seat 18 is further mounted on the workbench 11, the sensor mounting seat 18 is opposite to the electromagnet 22 and is positioned between the electromagnet 22 and the side frame 12, and an inward-concave mounting groove 181 is formed in the sensor mounting seat 18; the infrared sensor assembly 9 includes an infrared transmitter 91 and an infrared receiver 92 which are matched with each other, and the infrared transmitter 91 and the infrared receiver 92 are respectively installed on the first rotating base 3 and the second rotating base 4.

The moving assembly 5 is mounted on the side frame 11, and the moving assembly 5 includes: a connecting base 51, a fixing plate 52, a moving base 54 and a driving motor 55; the fixed plate 52 is fixedly welded on the side frame 12, the plate surface of the fixed plate 52 is perpendicular to the table surface of the workbench 11, the plate surface of the fixed plate 52 is provided with a second guide rail 53, the second guide rail 53 is parallel to the axis of the rotating roller 21, the movable seat 54 is arranged on the second guide rail 53 and can slide along the second guide rail 53, the movable seat 54 is further provided with a third guide rail 541, a screw 542 and a grating ruler 543 which are parallel to each other, the connecting seat 51 is sleeved on the third guide rail 51 and the grating ruler 543 in a sliding manner, the screw 542 penetrates through the connecting seat 51 and is in threaded connection with the connecting seat 51, the driving motor 54 is fixedly arranged on the movable seat 54, the output end of the driving motor 54 is coaxially and fixedly connected with the end of the screw 542, and when the driving motor 54 rotates, the connecting seat 51 can approach or depart from the rotating roller assembly 2.

The welding gun assembly 6 comprises a gun head 61 and a welding machine 62 which are connected with each other, the gun head 61 is installed on the connecting seat 51 through a first adjusting assembly 63, and the first adjusting assembly 63 comprises: a first connecting arm 631, a first adjuster 632, a second connecting arm 635, and a second adjuster 636; the first connecting arm 631 is L-shaped, one end of which is fixedly connected to the connecting base 51, and the other end of the first connecting arm 631 extends to the other side of the frame 11; the first adjusting member 632 is fixedly installed at the other end of the first connecting arm 631, the first adjusting member 632 includes a first adjusting end 633 and a first movable end 634 which are horizontally arranged, the first adjusting member 632 is connected with the first adjusting end 633 through a screw, when the first adjusting end 633 is rotated, the first movable end 634 can be driven to horizontally move, the second connecting arm 635, one end of which is fixed with the first movable end 634, the other end of the second connecting arm 635 is bent vertically downwards, the second adjusting member 636 is "L" shaped, one end of which is fixedly installed at the other end of the second connecting arm 635, the second adjusting member 636 includes a second adjusting end 637 and a second movable end 638 which are vertically arranged, the second adjusting end 637 is connected with the second movable end 638 through a screw, when the second adjusting end 637 is rotated, the second movable end 638 can be driven to vertically move, and the gun head 61 is fixedly installed on the second movable end 638; a protective cover assembly 64 is arranged on the periphery of the gun head 61, the protective cover assembly 64 is fixedly connected with the connecting seat 51 through a protective cover bracket 65, the welding machine 62 is fixedly arranged on the second rotating seat 4, the protective cover bracket 65 is of a rectangular frame structure, first slotted holes 651 which are horizontally arranged are respectively arranged on two sides of the protective cover bracket 65, and the length direction of the first slotted holes 651 points to the front side of the workbench 11 from the rear side of the workbench 11; protective cover assembly 64 includes: a shield 641 and a cover 643; the shield 641 is attached to and surrounds the outer periphery of the lance head 61, the shield 641 and the shield holder 65 are welded to each other, and an observation port 642 is provided in the shield 641 at a position facing the front end; the cover 643 is attached to the observation port 642 in an openable and closable manner, an observation window 644 corresponding to the observation port 642 is opened in the cover 643, and the observation window 644 is provided with a light shielding glass.

The distance sensor assembly 7 comprises a laser transmitter 71 and a laser receiver 72 which are matched with each other, the laser receiver 72 is fixedly arranged in the mounting groove 181, the receiving end of the laser receiver is positioned below the notch of the mounting groove 181, the laser transmitter 71 is arranged on the protective cover bracket 65 through a second adjusting assembly 73, and the second adjusting assembly 73 comprises a first connecting plate 731 and a second connecting plate 733; two ends of the first connecting plate 731 are slidably mounted in the first slot 651 through connecting bolts, respectively, a second slot 732 horizontally disposed is formed in the first connecting plate 731, the length direction of the second slot 732 is perpendicular to the length direction of the first slot 651, a third slot 734 is formed at one side of the second connecting plate 733, the third slot 734 is connected to the second slot 732 through bolts, the length directions of the third slot 734 and the second slot 732 are perpendicular to each other, the laser emitter 71 is mounted at the other end of the second connecting plate 733, and the positions of the laser emitter 71 in the horizontal direction and the vertical direction can be adjusted by adjusting the mounting positions of the first connecting plate 731 and the second connecting plate 733 in the second adjusting assembly 73, so that the laser emitter 71 and the laser receiver 72 are aligned with each other.

Controller 8 fixed mounting rotates on seat 3 first, and controller 8 rotates seat 3, second respectively, rotates seat 4, distance sensor subassembly 7, electro-magnet 22, infrared emitter 91 and infrared receiver 92 electric connection.

In summary, in the embodiment, the welding part can be accurately positioned by rotating the roller assembly, the first rotating seat and the second rotating group, and the welding part can be attracted by the electromagnet to prevent deformation and dislocation in the welding process; the distance sensor assembly is additionally arranged to assist the grating ruler in measuring the distance in real time, so that the positioning precision is prevented from being reduced due to the influence of the environment; the position of the gun head in the welding gun assembly can be conveniently adjusted through the first adjusting assembly, so that the gun head can be quickly positioned according to actual conditions.

The foregoing description of the specific exemplary embodiments of the invention has been presented for the purposes of illustration and description, and is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching, although examples of the invention have been shown and described, the present examples are intended to be illustrative of the invention and are not intended to be limiting of the invention, the particular features, structures, materials or characteristics described may be suitably combined in any one or more of the examples or illustrations, the exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application, to thereby enable others skilled in the art to utilize the invention in such detail without departing from the principles and spirit of the invention, modifications, substitutions, variations and various alternatives and changes of the embodiments may be made as necessary without inventive contribution to the art, but are protected by patent laws within the scope of the claims of the present invention.

Claims (10)

1. A spot welding device for a can body, comprising:

the rack (1) comprises a workbench (11) and side frames (12), wherein a plurality of supporting feet (13) are arranged below the workbench (11), and the side frames (12) are arranged on one side of the workbench (11);

the rotating roller assembly (2) is arranged on the workbench (11), the rotating roller assembly (2) comprises two groups of rotating rollers (21) which are parallel to each other and have a certain interval, and an electromagnet (22) is arranged between the two rotating rollers (21);

the first rotating seat (3) and the second rotating seat (4) are respectively arranged at two sides of the rotating roller assembly (2) in a slidable mode and can be close to or far away from each other, a rotatable first rotating sleeve (31) is arranged at one end, facing the rotating roller assembly (2), of the first rotating seat (3), a rotatable second rotating sleeve (41) is arranged at one end, facing the rotating roller assembly (2), of the second rotating seat (4), and the axes of the first rotating sleeve (31) and the second rotating sleeve (41) are overlapped and are parallel to the axis of the rotating roller (21) at the same time;

the moving assembly (5) is arranged on the side frame (12), the moving assembly (5) comprises a connecting seat (51), and the connecting seat (51) can move from the first rotating seat (3) to the second rotating seat (4) and can be close to or far away from the rotating roller assembly (2);

the welding gun assembly (6) comprises a gun head (61) and a welding machine (62) which are connected with each other, the gun head (61) is connected with the connecting seat (51) through a first adjusting assembly (63), the position of the gun head (61) in the horizontal direction and the vertical direction can be adjusted through the first adjusting assembly (63), a protective cover assembly (64) is arranged on the periphery of the gun head (61), the protective cover assembly (64) is fixedly connected with the connecting seat (51) through a protective cover support (65), and the welding machine (62) is fixedly installed on any one of the first rotating seat (3) and the second rotating seat (4);

the distance sensor assembly (7) comprises a laser transmitter (71) and a laser receiver (72) which are matched with each other, the laser receiver (72) is fixedly installed on the workbench (11), the laser transmitter (71) is arranged on the protective cover bracket (65) through a second adjusting assembly (73), and the second adjusting assembly (73) can adjust the positions of the laser transmitter (71) in the horizontal direction and the vertical direction so that the laser transmitter (71) and the laser receiver (72) are aligned with each other;

the controller (8) is fixedly installed on the other one of the first rotating seat (3) and the second rotating seat (4), and the controller (8) is electrically connected with the first rotating seat (3), the second rotating seat (4), the distance sensor assembly (7) and the electromagnet (22) respectively;

infrared sensor subassembly (9), it includes infrared transmitter (91) and infrared receiver (92) that match each other, infrared transmitter (91) with infrared receiver (92) are located respectively first rotation seat (3) with on second rotation seat (4) and with controller (8) electric connection.

2. Spot welding device for can bodies according to claim 1, characterized in that a relief ring groove (23) is provided in the middle of each rotating roller (21).

3. The spot welding device for the tank body according to the claim 1 is characterized in that one end of the electromagnet (22) is fixedly connected with the working table (11), the other end of the electromagnet (22) is provided with an inward-sunken arc-shaped clamping groove (24), and the axis of the clamping groove (24) is parallel to the axis of the rotating roller (21).

4. A can body spot welding apparatus according to claim 1, wherein said table (11) is provided with two sets of first guide rails (14), each of said first guide rails (14) is located on both sides of said rotatable roller assembly (2), said first guide rails (14) are parallel to the axis of said rotatable roller (21), and said first rotatable base (3) and said second rotatable base (4) are slidably provided on said first guide rails (14), respectively.

5. The tank spot welding device according to claim 4, characterized in that a protective cover (15) is arranged on the periphery of each of the first rotating base (3) and the second rotating base (4), the protective cover (15) is fixedly mounted on the workbench (11), a cover opening (16) is formed in one end of each of the two protective covers (15), the first rotating base (3) and the second rotating base (4) can respectively pass through the cover opening (16), a hydraulic cylinder (17) is fixedly mounted at the other end of each of the protective covers (15), and the movable end of each of the hydraulic cylinders (17) is fixedly connected with the first rotating base (3) and the second rotating base (4).

6. The can spot welding apparatus according to claim 1, wherein said table (11) is provided with a sensor mounting seat (18), said sensor mounting seat (18) is provided with a mounting groove (181), and said laser receiver (72) is fixedly mounted in said mounting groove (181).

7. Spot welding device for tanks according to claim 1, characterized in that said moving assembly (5) further comprises:

the fixed plate (52) is fixedly arranged on the side frame (12), the plate surface of the fixed plate (52) is perpendicular to the table surface of the workbench (11), a second guide rail (53) is arranged on the plate surface of the fixed plate (52), and the second guide rail (53) is parallel to the axis of the rotating roller (21);

the movable seat (54) is slidably arranged on the second guide rail (53), a third guide rail (541), a screw rod (542) and a grating ruler (543) which are parallel to each other are arranged on the movable seat (54), the connecting seat (51) is slidably arranged on the third guide rail (541) and the grating ruler (543), and the screw rod (542) is in threaded connection with the connecting seat (51);

and the driving motor (55), the driving motor (55) is fixedly installed on the moving seat (54), and the output end of the driving motor is coaxially and fixedly connected with the end part of the screw (542).

8. Spot welding device for tanks according to claim 1, characterized in that said first adjustment assembly (63) comprises:

a first connecting arm (631) having one end fixedly connected to the connecting base (51), the other end of the first connecting arm (631) extending to the other side of the table (11);

a first adjusting member (632) fixedly installed at the other end of the first connecting arm (631), the first adjusting member (632) including a first adjusting end (633) and a first movable end (634) horizontally disposed, the first movable end (634) being capable of being driven to horizontally move when the first adjusting end (633) is rotated;

one end of the second connecting arm (635) is fixed with the first movable end (634), and the other end of the second connecting arm (635) is vertically bent downwards;

the second adjusting piece (636) is fixedly installed at the other end of the second connecting arm (635), the second adjusting piece (636) comprises a second adjusting end (637) and a second movable end (638), the second adjusting end (637) and the second movable end (638) are vertically arranged, when the second adjusting end (637) is rotated, the second movable end (638) can be driven to vertically move, and the gun head (61) is fixedly installed on the second movable end (638).

9. The spot welding device for the tank body according to the claim 1, characterized in that a first slotted hole (651) is formed in the protective cover bracket (65) in a horizontal arrangement, and the length direction of the first slotted hole (651) is directed from one side of the workbench (11) to the other side of the workbench (11); the second adjustment assembly (73) comprises:

the two ends of the first connecting plate (731) are respectively arranged in the first slot hole (651) in a slidable mode, a second slot hole (732) which is horizontally arranged is formed in the first connecting plate (731), and the length direction of the second slot hole (732) is perpendicular to the length direction of the first slot hole (651);

and a second connecting plate 733, one side of which is provided with a third slot hole 734, the third slot hole 734 being connected with the second slot hole 732 by a bolt, the third slot hole 734 and the second slot hole 732 being perpendicular to each other in length direction, the laser emitter 71 being provided at the other end of the second connecting plate 733.

10. Spot welding device for tanks according to claim 1, characterized in that said protective cover assembly (64) comprises:

the protection cover (641) is arranged on the periphery of the gun head (61) in a surrounding mode, the protection cover (641) is fixedly connected with the protection cover support (65), and an observation port (642) is formed in the protection cover (641);

a cover (643), wherein the cover (643) is arranged at the observation port (642) in an openable and closable manner, and the cover (643) is provided with an observation window (644) corresponding to the observation port (642).

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