CN112475680A

CN112475680A - Welding set is used in production of water tank skeleton of quick location

Info

Publication number: CN112475680A
Application number: CN202011316353.4A
Authority: CN
Inventors: 刘和兵; 徐中林; 翟宗旭; 刘和平; 张凯
Original assignee: Anhui Mingquan Water Equipment Ltd
Current assignee: Anhui Mingquan Water Equipment Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-12

Abstract

The invention discloses a welding device for producing a quickly positioned water tank framework, which comprises a workbench, wherein two sliding grooves are symmetrically formed in the upper surface of the workbench, a positioning mechanism is embedded between the two sliding grooves and is slidably installed, a groove block is arranged on the rear side above the workbench, an L-shaped block is embedded in the groove block and is slidably installed, and the lower surfaces of the two positioning plates are in contact with the upper surface of the workbench. The invention relates to the technical field of production and processing of water tank frameworks.A positioning mechanism is arranged, when a workpiece needs to be fixed, a worker only needs to rotate a handle to enable two positioning plates to move upwards under the elasticity of a spring, then a power supply of a first servo motor is switched on, the two positioning plates can be moved between the two sides of the workpiece according to the size of the workpiece, then the handle is released, and the spring can enable the positioning plates to firmly clamp the upper surface of the workpiece.

Description

Welding set is used in production of water tank skeleton of quick location

Technical Field

The invention relates to the technical field of production and processing of water tank frameworks, in particular to a welding device for producing a water tank framework with rapid positioning.

Background

The water tank is generally provided with a HYFI remote transmission liquid level electric valve, a HYJK type water level monitoring system, a HYQX-II water tank automatic cleaning system and a HYZZ-2-A type water tank self-cleaning sterilizer, the water tank is divided into six types, namely an SMC (sheet metal composite) glass fiber reinforced plastic water tank, a blue-Bo stainless steel water tank, a stainless steel inner container glass fiber reinforced plastic water tank, a seawater glass fiber reinforced plastic water tank, an enamel water tank and a galvanized steel plate water tank, and when a water tank framework is machined, raw materials need to be welded.

The invention with the Chinese patent number of CN111112914A discloses a semi-automatic welding device for an expansion water tank, which comprises a supporting platform, a mounting bracket, a positioning mechanism and a driving part, wherein the mounting bracket is arranged on the supporting platform, the mounting bracket extends upwards, the positioning mechanism is arranged in the mounting bracket, and the driving part is arranged above the mounting bracket; the positioning mechanism comprises a lower box positioning plate and an upper box positioning plate, the lower box positioning plate is fixedly arranged below the mounting bracket, the upper box positioning plate is connected to the driving part, and the driving part drives the upper box positioning plate to move along the vertical direction; the lower box body positioning plate extends upwards to form a plurality of lower positioning frames, and the upper box body positioning plate extends downwards to form a plurality of upper positioning frames. The welding device has the advantages of high welding efficiency, high welding precision, simple structure and convenience in operation.

In conclusion, the welding device for producing the water tank framework at present has the following defects in use:

1. the workpiece is inconvenient to be quickly positioned and fixed, and the positioning size cannot be adjusted according to the size of the workpiece;

2. when welding the work piece, can produce the flue gas, the flue gas produces harm to the staff.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a welding device for producing a water tank framework with rapid positioning, which solves the problems that the workpiece is inconvenient to be rapidly positioned and fixed, the positioning size cannot be adjusted according to the size of the workpiece, and smoke gas is generated and harms workers when the workpiece is welded.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a welding set is used in production of water tank skeleton of quick location, includes the workstation, two spouts, two have been seted up to the upper surface symmetry of workstation imbed slidable mounting between the spout has positioning mechanism, the top rear side of workstation is provided with the groove piece, the inside embedding slidable mounting of groove piece has the L-shaped piece.

The positioning mechanism comprises two positioning plates, the lower surfaces of the two positioning plates are in contact with the upper surface of the workbench, the lower surfaces of two ends of the two positioning plates are vertically connected with telescopic parts, the telescopic parts are installed inside the sliding chute in a penetrating and sliding manner, double-tooth lead screws are arranged between the lower ends of the telescopic parts on the two positioning plates in a penetrating and sliding manner, two ends of the two double-tooth lead screws are respectively connected with two side surfaces inside the workbench in a rotating manner, a limiting plate is horizontally connected between the upper ends of the two telescopic parts, two rotating shafts are horizontally and symmetrically connected between the two double-tooth lead screws in a rotating manner, gear rings corresponding to the two positioning plates are sleeved and installed on the outer surfaces of two ends of the two rotating shafts in a sliding manner, the gear rings on the two rotating shafts are in meshing engagement, and guide rods are arranged on one side, the upper ends of the two guide rods are embedded into the lower surface of the limiting plate in a sliding mode, and the lower surface of the limiting plate is provided with a sliding groove matched with the guide rods.

Preferably, the threads on the two sides of the center of the double-tooth screw rod are opposite, threaded holes matched with the two threads are formed in one side of the lower end of the telescopic piece on the two positioning plates, driving wheels corresponding to the two double-tooth screw rods are symmetrically embedded and rotatably installed in one side face of the workbench, the two driving wheels are in transmission connection through a transmission belt, a first servo motor is arranged on one side face of one driving wheel, and one ends of the two driving wheels are fixedly connected with one ends of the two double-tooth screw rods respectively.

Preferably, the extensible member is including a fixed cylinder, the upper end embedding slidable mounting of a fixed cylinder has the slide-shaft, the lower extreme vertical connection of slide-shaft has the spring, the lower extreme of spring and the inside lower fixed surface of a fixed cylinder are connected.

Preferably, two the draw-in groove has all been seted up to the front and back surface of pivot, the surface all is provided with the card axle around the inside of gear circle, two the relative one end of card axle imbeds slidable mounting respectively in the inside of two draw-in grooves, the handle is installed in a side embedding rotation of workstation, the one end of handle and the one end fixed connection of one of them pivot.

Preferably, a second servo motor is embedded into one side face of the groove block, an output shaft of the second servo motor is horizontally connected with a conveying screw rod, the other end of the conveying screw rod is rotatably installed on the inner surface of the other side of the groove block, the lower side of the L-shaped block is sleeved and installed on the outer surface of the conveying screw rod, and an internal thread hole matched with the conveying screw rod is formed in one side of the lower portion of the L-shaped block.

Preferably, the mounting groove has been seted up to the inside front surface of L-shaped piece, the inside slidable mounting of mounting groove has filter screen board and active carbon adsorption otter board, all through spacing axle fixed connection between four corners of filter screen board and the four corners of active carbon adsorption otter board, and the both sides rear surface intermediate position department of filter screen board all is provided with the connecting block, two the one end of connecting block all is connected in the both sides front surface of active carbon adsorption otter board, through bolt fixed connection between the inside of connecting block and mounting groove, the rear surface fixed mounting of L-shaped piece has the exhaust fan corresponding with the mounting groove.

Preferably, the upper surface of L-shaped block has been seted up and has been led to the groove, and the top rear surface embedding of L-shaped block installs third servo motor, third servo motor's output shaft horizontally connect has the screw rod, the one end of screw rod is connected with the inside rear surface rotation that leads to the groove, and the one end surface cup joints and is provided with the slider rather than the looks adaptation, the lower surface of slider is connected with the pneumatic cylinder, the output shaft fixedly connected with soldered connection of pneumatic cylinder.

Preferably, the upper surface of workstation is located the position department between two spouts and has evenly seted up the movable groove, each equal level rotates between the inside of movable groove and is connected with the guide roll, the upper surface of guide roll flushes with the upper surface of workstation.

Advantageous effects

The invention provides a welding device for producing a water tank framework with rapid positioning, which has the following beneficial effects compared with the prior art:

(1) this welding set is used in production of water tank skeleton of quick location, through setting up positioning mechanism, when needs fix the work piece, the staff only need rotate the handle, under the elasticity of spring, make two locating plates rebound, then the power of the first servo motor of switch-on, can make two locating plates remove between the work piece both sides according to the size of work piece, later loosen the handle, the spring can make the locating plate give firm centre gripping with the upper surface of work piece, conveniently carries out weldment work to the work piece.

(2) This welding set is used in production of water tank skeleton of quick location, through setting up filter plate and active carbon adsorption otter board, when carrying out the welded to the work piece, the power of switch-on exhaust fan, the flue gas that can make the welding produce is through filter plate and active carbon adsorption otter board, impurity and harmful substance in the flue gas adsorb, reduce the injury that the flue gas produced the staff, and then played the guard action to staff's health safety, it changes also to dismantle to filter plate and active carbon adsorption otter board to make things convenient for simultaneously.

(3) This welding set is used in production of water tank skeleton of quick location through setting up second servo motor and third servo motor, when welding the work piece, can carry out weldment work to the position of difference on the work piece, need not artifical transport work piece, has not only improved work efficiency, but also has reduced artificial intensity of labour.

(4) This quick welding set for water tank skeleton production of location through set up the guide roll in the movable groove, when removing the work piece on the workstation, the work piece can slide on the surface of guide roll, improves the smoothness nature that the work piece removed to reduce the strength that the staff removed the work piece.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a schematic structural diagram of a positioning mechanism of the present invention;

FIG. 3 is a schematic view of a stopper plate structure according to the present invention;

FIG. 4 is an enlarged view of a portion of the structure of FIG. 2;

FIG. 5 is a schematic view of the construction of the telescoping member of the present invention;

fig. 6 is a partially broken-away schematic view of an L-shaped block structure according to the present invention.

In the figure: 1. a work table; 101. a driving wheel; 102. a transmission belt; 103. a first servo motor; 104. a handle; 105. a movable groove; 106. a guide roller; 2. a chute; 3. a positioning mechanism; 31. positioning a plate; 32. a telescoping member; 321. a fixed cylinder; 322. a slide shaft; 323. a spring; 33. a double-tooth screw rod; 34. a limiting plate; 35. a rotating shaft; 351. a card slot; 36. a gear ring; 361. clamping a shaft; 37. a guide bar; 38. a sliding groove; 4. a groove block; 41. a second servo motor; 42. conveying a screw rod; 5. an L-shaped block; 51. mounting grooves; 52. a filter screen plate; 53. an activated carbon adsorption screen plate; 54. a limiting shaft; 55. connecting blocks; 56. a bolt; 57. an exhaust fan; 58. a through groove; 59. a third servo motor; 510. a screw; 511. a slider; 512. a hydraulic cylinder; 513. and (5) welding a head.

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, the present invention provides a technical solution: a welding device for producing a quickly positioned water tank framework comprises a workbench 1, two sliding grooves 2 are symmetrically formed in the upper surface of the workbench 1, a positioning mechanism 3 is embedded between the two sliding grooves 2 in a sliding mode, a groove block 4 is arranged on the rear side above the workbench 1, an L-shaped block 5 is embedded in the groove block 4 in a sliding mode, a second servo motor 41 is embedded in one side surface of the groove block 4, a conveying screw rod 42 is horizontally connected to an output shaft of the second servo motor 41, the other end of the conveying screw rod 42 is rotatably installed on the inner surface of the other side of the groove block 4, the lower side of the L-shaped block 5 is sleeved and installed on the outer surface of the conveying screw rod 42, an internal threaded hole matched with the conveying screw rod 42 is formed in one side of the lower portion of the L-shaped block 5, when the second servo motor 41 of MHMD082P1U rotates, in order to drive the two conveying screw rods 42 to rotate, a, a third servo motor 59 is embedded in the upper rear surface of the L-shaped block 5, an output shaft of the third servo motor 59 is horizontally connected with a screw 510, one end of the screw 510 is rotatably connected with the inner rear surface of the through groove 58, a sliding block 511 matched with the screw 510 is sleeved on the outer surface of one end of the screw 510, a hydraulic cylinder 512 is connected to the lower surface of the sliding block 511, a welding head 513 is fixedly connected to the output shaft of the hydraulic cylinder 512, in order to perform welding work on different positions of a workpiece, a movable groove 105 is uniformly formed in the position, between the two sliding grooves 2, of the upper surface of the workbench 1, a guide roller 106 is horizontally and rotatably connected between the inner parts of the movable grooves 105, the upper surface of the guide roller 106 is flush with the upper surface of the workbench 1, in order to move the workpiece, the model of the third servo motor 59 is md mh082P 1U.

Referring to fig. 2-3, the positioning mechanism 3 includes two positioning plates 31, the lower surfaces of the two positioning plates 31 contact the upper surface of the worktable 1, and the lower surfaces of both ends of the two positioning plates 31 are vertically connected with telescopic members 32, the telescopic members 32 are installed inside the chute 2 in a penetrating and sliding manner, a double-threaded lead screw 33 is installed between the lower ends of the telescopic members 32 on the two positioning plates 31, both ends of the two double-threaded lead screw 33 are respectively connected with the two side surfaces inside the worktable 1 in a rotating manner, a limiting plate 34 is horizontally connected between the upper ends of the two telescopic members 32, two rotating shafts 35 are horizontally and symmetrically connected between the two double-threaded lead screws 33 inside the worktable 1 in a rotating manner, gear rings 36 corresponding to the two positioning plates 31 are installed on the outer surfaces of both ends of the two rotating shafts 35 in a sleeved and sliding manner, the gear rings 36 on the two rotating shafts 35 are engaged, guide rods 37 are installed, the upper ends of the two guide rods 37 are embedded into the lower surface of the limiting plate 34 in a sliding mode, sliding grooves 38 matched with the guide rods 37 are formed in the lower surface of the limiting plate 34, threads on two sides of the center of the double-tooth lead screw 33 are opposite, threaded holes matched with the two threads are formed in one side of the lower end of the telescopic piece 32 on the two positioning plates 31, driving wheels 101 corresponding to the two double-tooth lead screws 33 are symmetrically embedded into one side of the workbench 1 in a rotating mode, the two driving wheels 101 are connected through a driving belt 102 in a driving mode, a first servo motor 103 is arranged on one side of one driving wheel 101, one ends of the two driving wheels 101 are fixedly connected with one ends of the two double-tooth lead screws 33 respectively, when the double-tooth lead screws 33 rotate, in order to drive the two positioning plates 31 to move, and.

Referring to fig. 4, the front and rear surfaces of the two rotating shafts 35 are both provided with a clamping groove 351, the front and rear surfaces of the inside of the gear ring 36 are both provided with a clamping shaft 361, the opposite ends of the two clamping shafts 361 are respectively embedded and slidably mounted inside the two clamping grooves 351, a handle 104 is embedded and rotatably mounted on one side surface of the workbench 1, one end of the handle 104 is fixedly connected with one end of one of the rotating shafts 35, and the gear ring 36 can slide on the rotating shaft 35.

Referring to fig. 5, the telescopic member 32 includes a fixed cylinder 321, a sliding shaft 322 is slidably inserted into an upper end of the fixed cylinder 321, a spring 323 is vertically connected to a lower end of the sliding shaft 322, a lower end of the spring 323 is fixedly connected to an inner lower surface of the fixed cylinder 321, and a workpiece can be firmly clamped by elasticity of the spring 323.

Please refer to fig. 6, a mounting groove 51 is provided on the inner front surface of the L-shaped block 5, a filter screen plate 52 and an active carbon adsorption screen plate 53 are slidably mounted in the mounting groove 51, four corners of the filter screen plate 52 and four corners of the active carbon adsorption screen plate 53 are fixedly connected by a limiting shaft 54, and connecting blocks 55 are disposed at the middle positions of the two sides of the filter screen plate 52 and the middle positions of the two sides of the rear surface, one ends of the two connecting blocks 55 are connected to the two sides of the active carbon adsorption screen plate 53, the connecting blocks 55 are fixedly connected to the inner part of the mounting groove 51 by bolts 56, an exhaust fan 57 corresponding to the mounting groove 51 is fixedly mounted on the rear surface of the L-shaped block 5, and.

And those not described in detail in this specification are well within the skill of those in the art.

Positioning work: when in use, firstly, a workpiece is put on the workbench 1, the workpiece is moved, the position of the workpiece is adjusted, in the moving process, the workpiece can slide on the guide rollers 106 in the movable groove 105, the workpiece can move more smoothly, the strength of workers can be saved, after the workpiece is adjusted, the handle 104 is rotated, the handle 104 drives the two gear rings 36 on one rotating shaft 35 to rotate, because the gear rings 36 on the two rotating shafts 35 are in meshing connection, when the handle 104 rotates, the gear rings 36 on the two rotating shafts 35 can be driven to rotate, the rotating directions of the two gear rings 36 are opposite, the two gear rings 36 move in opposite directions, so that the upper ends of the guide rods 37 on the two gear rings 36 can slide in the sliding grooves 38 on the lower surface of the limiting plate 34, the upper ends of the guide rods 37 can extrude the lower surface of the limiting plate 34, then under the elasticity of the springs 323, the limiting plate 34 will drive the two sliding shafts 322 to slide upwards in the fixed cylinder 321, the sliding shafts 322 will drive the positioning plate 31 to move upwards, so that the distance from the positioning plate 31 to the upper surface of the workbench 1 is greater than the thickness of the workpiece, then the power supply of the first servo motor 103 is connected, under the transmission of the transmission belt 102, the first servo motor 103 will drive the two-tooth lead screws 33 on the two transmission wheels 101 to rotate, because the threads on the two sides of the center of the outer surface of the two-tooth lead screws 33 are set to be opposite, and the side surfaces of the lower ends of the telescopic parts 32 on the two positioning plates 31 are respectively provided with threaded holes matched with the two threads, the two-tooth lead screws 33 will drive the two positioning plates 31 to move when rotating, and the moving directions thereof are opposite, and because the clamping shafts 361 on the gear ring 36 are slidably mounted inside the clamping grooves 351, the positioning plate 31 will drive the limiting plate 34 to move when moving, after the two positioning plates 31 are moved to the upper surfaces of both sides of the workpiece, the guide rods 37 of the two gear rings 36 are moved to both sides by the elasticity of the spring 323 by releasing the handle 104, so that the positioning plates 31 are moved downward and the upper surfaces of both sides of the workpiece are fixed by the two positioning plates 31.

Welding: after the workpiece is fixed, the hydraulic cylinder 512 drives the welding head 513 to move to the surface of the workpiece, then power supplies of the second servo motor 41 and the third servo motor 59 are respectively connected, the second servo motor 41 drives the conveying screw rod 42 to rotate, the conveying screw rod 42 drives the L-shaped block 5 to move, the third servo motor 59 drives the screw rod 510 to rotate, the screw rod 510 drives the sliding block 511 to move, and the sliding block 511 drives the welding head 513 on the hydraulic cylinder 512 to move, so that the position of the welding head 513 can be adjusted to weld different positions on the surface of the workpiece.

Smoke removal: in-process to work piece welded, the power of switch-on exhaust fan 57, exhaust fan 57 airs exhaust to the flue gas, make the flue gas pass through filter plate 52 and active carbon adsorption otter board 53 respectively, filter plate 52 can give some foreign particles in the flue gas and filter, active carbon adsorption otter board 53 can give the absorption with harmful substance in the flue gas, reduce the injury of flue gas to personnel, and pass through bolt 56, can be convenient for dismantle filter plate 52 and active carbon adsorption otter board 53, the convenience is changed filter plate 52 and active carbon adsorption otter board 53.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quick welding set for production of location's water tank skeleton, includes workstation (1), its characterized in that: the upper surface of the workbench (1) is symmetrically provided with two sliding grooves (2), a positioning mechanism (3) is embedded between the two sliding grooves (2) in a sliding manner, a groove block (4) is arranged on the rear side above the workbench (1), and an L-shaped block (5) is embedded in the groove block (4) in a sliding manner;

positioning mechanism (3) is including two locating plates (31), two the upper surface contact of the lower surface of locating plate (31) and workstation (1), and the both ends lower surface of two locating plates (31) all is connected with extensible member (32) perpendicularly, extensible member (32) are run through slidable mounting in the inside of spout (2), two run through between extensible member (32) lower extreme on locating plate (31) and be provided with two tooth lead screws (33), two the both ends of two tooth lead screws (33) are rotated with the inside both sides face of workstation (1) respectively and are connected, two horizontally connect with limiting plate (34) between the upper end of extensible member (32), the inside of workstation (1) is located between two tooth lead screws (33) and the horizontal symmetry of position department rotates and is connected with two pivot (35), two the both ends surface of pivot (35) all cup joints slidable mounting has with two locating plate (31) corresponding gear circle (36), two for the engagement between gear circle (36) on pivot (35), two one side of the top dorsad of gear circle (36) all is provided with guide arm (37), two the upper end of guide arm (37) all imbeds and slides in the lower surface of limiting plate (34), the lower surface of limiting plate (34) seted up with guide arm (37) assorted sliding tray (38).

2. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 1, wherein the welding device comprises: the screw thread that double-tooth lead screw (33) are located the center both sides sets up to opposite, two telescopic part (32) lower extreme one side on locating plate (31) is seted up with two kinds of screw thread assorted screw holes, a side symmetry embedding of workstation (1) is rotated and is installed drive wheel (101) corresponding with two double-tooth lead screws (33), two connect through drive belt (102) transmission between drive wheel (101), and a side of one of them drive wheel (101) is provided with a servo motor (103), two the one end of drive wheel (101) respectively with the one end fixed connection of two double-tooth lead screws (33).

3. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 1, wherein the welding device comprises: the telescopic piece (32) comprises a fixed cylinder (321), a sliding shaft (322) is embedded into the upper end of the fixed cylinder (321) in a sliding mode, a spring (323) is vertically connected to the lower end of the sliding shaft (322), and the lower end of the spring (323) is fixedly connected with the lower surface of the inner portion of the fixed cylinder (321).

4. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 1, wherein the welding device comprises: draw-in groove (351) have all been seted up to the front and back surface of pivot (35), the inside front and back surface of gear circle (36) all is provided with card axle (361), two the inside of card axle (361) relative one end embedding slidable mounting in two draw-in grooves (351) respectively, handle (104) are installed in the side embedding rotation of workstation (1), the one end fixed connection of the one end of handle (104) and one of them pivot (35).

5. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 1, wherein the welding device comprises: a second servo motor (41) is installed in one side face of the groove block (4) in an embedded mode, an output shaft of the second servo motor (41) is horizontally connected with a conveying screw rod (42), the other end of the conveying screw rod (42) is rotatably installed on the inner surface of the other side of the groove block (4), the lower side of the L-shaped block (5) is sleeved and installed on the outer surface of the conveying screw rod (42), and an inner threaded hole matched with the conveying screw rod (42) is formed in one side of the lower portion of the L-shaped block (5).

6. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 1, wherein the welding device comprises: mounting groove (51) have been seted up to the inside front surface of L-shaped piece (5), the inside slidable mounting of mounting groove (51) has filter screen board (52) and active carbon adsorption otter board (53), all through spacing axle (54) fixed connection between four corners of filter screen board (52) and the four corners of active carbon adsorption otter board (53), and filter screen board (52) both sides rear surface intermediate position department all is provided with connecting block (55), two the one end of connecting block (55) all is connected in the both sides front surface of active carbon adsorption otter board (53), pass through bolt (56) fixed connection between the inside of connecting block (55) and mounting groove (51), the rear surface fixed mounting of L-shaped piece (5) has exhaust fan (57) corresponding with mounting groove (51).

7. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 6, wherein the welding device comprises: logical groove (58) have been seted up to the upper surface of L-shaped piece (5), and the embedding of the top rear surface of L-shaped piece (5) installs third servo motor (59), the output shaft horizontally connect of third servo motor (59) has screw rod (510), the one end of screw rod (510) is connected with the inside rear surface rotation of logical groove (58), and the one end surface cup joints and is provided with slider (511) rather than the looks adaptation of screw rod (510), the lower surface of slider (511) is connected with pneumatic cylinder (512), the output shaft fixedly connected with soldered connection (513) of pneumatic cylinder (512).

8. The welding device for producing the water tank framework capable of being positioned quickly as claimed in claim 1, wherein the welding device comprises: the upper surface of workstation (1) is located between two spout (2) and the position department has evenly seted up movable groove (105), and is individual equal horizontal rotation is connected with guide roll (106) between the inside of movable groove (105), the upper surface of guide roll (106) flushes with the upper surface of workstation (1).