CN112775676A - Full-automatic welding production line for steel pipe furniture - Google Patents

Abstract

The invention provides a full-automatic welding production line for steel pipe furniture, which comprises a first conveying device, a cutting device, a painting mechanism, a transmission device, a first assembling mechanism and a second assembling mechanism, wherein the first conveying device is arranged on the first assembling mechanism; the painting mechanism comprises a painting device for spraying paint on the outer circumferential surface of the steel pipe monomer; the painting device comprises a plurality of painting devices for spraying paints with different colors on the outer circumferential surfaces of different steel pipe monomers and a first clamping device for clamping the steel pipe monomers to perform painting treatment on each painting device. According to the invention, the steel pipe monomers are connected to the transmission device according to different arrangement modes, the steel pipe monomers are driven to move through the transmission device, the table top formed by different arrangement modes among the steel pipe monomers with different colors is presented, color changing is carried out after one color is matched for a long time, the interestingness is improved, the life pleasure is improved, and meanwhile, the labor cost is greatly reduced through automatic production.

Description

Full-automatic welding production line for steel pipe furniture

Technical Field

The invention relates to the technical field of steel pipe furniture manufacturing, in particular to a full-automatic welding production line for steel pipe furniture.

Background

The steel pipe furniture is made of steel pipes as main raw materials.

With the development of the steel industry, the number of the furniture made of the steel pipes is increased gradually, and the steel pipe furniture has the characteristics of firmness, simplicity and convenience.

The desktop color made by steel pipe furniture is single, can't switch different colours, does not have the variety, is unfavorable for improving life enjoyment, and relies on the manual work in the process mostly and splices each part one by one, and degree of automation is low, and production efficiency is not high also does not benefit to and reduces the cost of labor simultaneously.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

The invention aims to provide a steel tube furniture full-automatic welding production line, which aims to solve the problems that the color of a table top is single, different colors cannot be switched, the automation degree is low, and the labor cost is not reduced.

In order to achieve the purpose, the invention adopts the following technical scheme:

a full-automatic welding production line for steel pipe furniture comprises a first conveying device for conveying a long round pipe, a cutting device for cutting the long round pipe into single steel pipes, a painting mechanism for painting the outer circumferential surface of the single steel pipes, a transmission device for transmitting the single steel pipes, a first assembling mechanism for connecting the single steel pipes to the transmission device to form a color changing assembly, and a second assembling mechanism for assembling the color changing assembly into a table; the painting mechanism comprises a painting device for spraying paint on the outer circumferential surface of the steel pipe monomer; the painting device comprises a plurality of painting devices for spraying paints with different colors on the outer circumferential surfaces of different steel pipe monomers and a first clamping device for clamping the steel pipe monomers to perform painting treatment on each painting device.

Further, the painting device includes a painting portion.

Further, the paint spraying part comprises a plurality of groups of automatic spraying guns; the automatic spray gun comprises an automatic spray nozzle, and the output end of the automatic spray nozzle faces towards the steel pipe monomer.

Furthermore, a plurality of groups of the spraying automatic spray guns are sequentially arranged along the axial direction of the steel pipe monomer.

Further, the paint spraying device also comprises a paint accommodating part; the paint containing part is provided with a paint containing cavity for containing paint, a first paint opening is formed in the upper surface of the paint containing part, the first paint opening is communicated with the paint containing cavity, and the paint spraying part is arranged at the first paint opening.

Further, the first clamping device comprises a first clamping part for clamping the single steel pipe.

Further, first clamping part is including stretching into first supporting rod, the second supporting rod of steel pipe monomer inner wall contact in the steel pipe monomer to and the first drive arrangement that opens and shuts of drive first supporting rod and second supporting rod along the horizontal direction.

Furthermore, the contact surface of the first clamping rod and the inner wall of the steel pipe monomer is an arc-shaped surface, and the contact surface of the second clamping rod and the inner wall of the steel pipe monomer is an arc-shaped surface.

Further, the first clamping device further comprises a first rotation driving device for driving the first clamping part to rotate, a first rotation driving device for driving the first rotation driving device to rotate, and a first movement driving device for driving the first clamping part to move; the output end of the first rotary driving device is connected with the first clamping part, the output end of the first rotary driving device is connected with the first rotary driving device, and the output end of the first movable driving device is connected with the first rotary driving device.

Further, the painting mechanism further comprises a drying device for drying the paint on the steel pipe monomer.

Further, a plurality of the paint spraying devices and the drying devices are sequentially arranged along the conveying direction of the strip round pipe.

Furthermore, the device also comprises an inserting mechanism which is provided with a first transmission connecting piece at one end of the steel pipe monomer and a second transmission connecting piece at the other end of the steel pipe monomer.

Furthermore, the inserting mechanism comprises a grabbing device for grabbing the single steel pipe, a first inserting device for assembling a first transmission connecting piece at one end of the single steel pipe, and a second inserting device for assembling a second transmission connecting piece at the other end of the single steel pipe.

Further, the grabbing device comprises a first grabbing portion and a second grabbing portion, wherein the first grabbing portion and the second grabbing portion are used for grabbing the single steel pipe.

Further, the first grabbing part comprises a first grabbing rod, a second grabbing rod and a second opening and closing driving device for driving the first grabbing rod and the second grabbing rod to open and close; the second grabbing part comprises a third grabbing rod, a fourth grabbing rod and a third opening and closing driving device for driving the third grabbing rod and the fourth grabbing rod to open and close.

Further, first arc-shaped containing grooves matched with the outer circumferential surfaces of the single steel pipes are formed in the opposite surfaces of the first grabbing rod and the second grabbing rod respectively; and second arc-shaped accommodating grooves matched with the outer circumferential surfaces of the single steel pipes are formed in the opposite surfaces of the third grabbing rod and the fourth grabbing rod respectively.

Further, the gripping device further comprises a first lifting driving device for driving the first gripping part and the second gripping part to lift, a second moving driving device for driving the first gripping part and the second gripping part to move along the axial direction of the steel pipe monomer, and a third moving driving device for driving the first gripping part and the second gripping part to move along the conveying direction of the long round pipe.

Further, first cartridge device is including adsorbing the first electromagnetism absorption portion of first transmission connecting piece and the first flexible drive arrangement of first electromagnetism absorption portion with first transmission connecting piece assembly in the first opening of steel pipe monomer one end.

Further, the second inserting device comprises a second electromagnetic adsorption part and a second telescopic driving device, wherein the second electromagnetic adsorption part adsorbs the second transmission connecting piece, and the second telescopic driving device drives the second electromagnetic adsorption part to assemble the second transmission connecting piece in a second opening at the other end of the steel pipe monomer.

Further, transmission includes the first transmission portion of assembling in many steel pipe monomer one ends and assembles the second transmission portion at many steel pipe monomer other ends.

Further, the first transmission part comprises a first transmission chain, a first chain wheel and a second chain wheel; the first transmission chain is wound around the first chain wheel and the second chain wheel.

Further, the second transmission part comprises a second transmission chain, a third chain wheel and a fourth chain wheel; the second transmission chain is wound around the third chain wheel and the fourth chain wheel.

Further, transmission still sets the first support frame body that supports first transmission portion and the second support frame body that supports second transmission portion.

Furthermore, the transmission device also comprises a first hand wheel for driving the first chain wheel to rotate and a second hand wheel for driving the third chain wheel to rotate; the first support frame body is provided with a first connecting hole, and the first hand wheel penetrates through the first connecting hole and is rotatably connected with the first chain wheel through a first rotating shaft; and a second connecting hole is formed in the second support frame body, and the second hand wheel passes through the second connecting hole and is rotatably connected with the third chain wheel through a second rotating shaft.

Further, the first assembling mechanism includes a first assembling device for assembling the first connecting shaft on each of the first outer link plates of the first transmission chain and assembling the second connecting shaft on each of the second outer link plates of the second transmission chain.

Further, the first assembling device comprises a second clamping device for clamping the first connecting shaft at a preset position of each first outer chain plate and clamping the second connecting shaft at a preset position of the second outer chain plate, a first welding device for welding the joint of the first connecting shaft and the first outer chain plate or the joint of the second connecting shaft and the second outer chain plate, and a second rotation driving device for driving the first chain wheel or the third chain wheel to rotate.

Further, the second clamping device includes a second clamping portion that clamps the first connecting shaft or the second connecting shaft.

Further, the second clamping part comprises a first clamping block, a second clamping block and a fourth opening and closing driving device for driving the first clamping block and the second clamping block to open and close; and third arc-shaped accommodating grooves matched with the outer circumferential surfaces of the first connecting shaft or the second connecting shaft are formed in the opposite surfaces of the first clamping block and the second clamping block respectively.

Further, the second clamping device further comprises a third telescopic driving device for driving the second clamping part to stretch and contract and a second rotary driving device for driving the second clamping part to rotate.

Further, the first welding device includes a first welding part that welds an inner side of the first connecting shaft and the first outer link plate or an inner side of the second connecting shaft and the second outer link plate.

Further, the first welding part comprises a first welding head, a fourth telescopic driving device for driving the first welding head to stretch and contract, and a third rotary driving device for driving the first welding head to rotate.

Further, first assembly devices still includes and connects the free one end of steel pipe in first connecting axle, and the free other end of steel pipe is connected in the second assembly devices on the corresponding second connecting axle.

Further, the second assembling device includes a transfer device of the first connecting shaft that transfers the single steel pipe body to the first transmission portion, and a second welding device that welds the first transmission connecting member of the single steel pipe body and the first connecting shaft together.

Further, the transfer device comprises a transfer table for bearing the single steel pipe and a first adsorption device for adsorbing the single steel pipe on the transfer table.

Further, the first adsorption device comprises a third electromagnetic adsorption part, a third rotation driving device for driving the third electromagnetic adsorption part to rotate, a telescopic arm for driving the third electromagnetic adsorption part to stretch and contract, and a fourth rotation driving device for driving the telescopic arm to rotate.

Further, a fourth arc-shaped accommodating groove for accommodating the steel pipe monomer is formed on the contact surface of the third electromagnetic absorption part and the steel pipe monomer.

Further, the second welding device comprises a second welding part for welding the joint of the first connecting shaft and the first transmission connecting piece or the joint of the second connecting shaft and the second transmission connecting piece.

Further, the second welding part comprises a second welding head, a fifth telescopic driving device for driving the second welding head to stretch and contract, and a fifth rotary driving device for driving the second welding head to rotate along the outer circumferential surface of the first connecting shaft.

Further, the second assembling mechanism comprises a supporting and positioning device for supporting and positioning the first transmission part and the second transmission part, a fixing device for fixing the first side plate on one side of the first transmission part and the second transmission part and fixing the second side plate on the other side of the first transmission part and the second transmission part, and a third welding device for welding the joint of the first side plate and the first transmission part and the joint of the second side plate and the second transmission part.

Further, the supporting and positioning device comprises a first supporting and fixing part for supporting and fixing the first transmission part and a second supporting and fixing part for supporting and fixing the second transmission part.

Further, the first supporting and fixing part comprises a first supporting leg and a second supporting leg which are connected to the bottom end of the first supporting frame body; the second support fixing part comprises a third supporting leg and a fourth supporting leg which are connected to the bottom end of the second support frame body; the first supporting leg and the third supporting leg are arranged in parallel and level, the second supporting leg and the fourth supporting leg are arranged in parallel and level, and the distance between the first supporting leg and the second supporting leg is equal to the distance between the third supporting leg and the fourth supporting leg.

Furthermore, the fixing device comprises a first magnetic attraction device for fixing the first side plate on one side of the first transmission part and one side of the second transmission part, and a second magnetic attraction device for fixing the second side plate on the other side of the first transmission part and the other side of the second transmission part.

Further, the first magnetic attraction device comprises a first electromagnetic attraction part and a first abutting driving device for driving the first electromagnetic attraction part to abut against; the second magnetic attraction device comprises a second electromagnetic attraction part and a second abutting driving device for driving the second electromagnetic attraction part to abut against.

Further, the third welding device comprises a third welding part for welding the joint of the first side plate and the first transmission part and the joint of the second side plate and the first transmission part and the second transmission part, and a fourth welding part for welding the joint of the second side plate and the first transmission part and the second transmission part.

Further, the third welding part comprises a third welding head for welding the joint of the first side plate and the first support frame body and a fourth welding head for welding the joint of the first side plate and the second support frame body; the fourth welding part comprises a fifth welding head for welding the joint of the second side plate and the first support frame body and a sixth welding head for welding the joint of the second side plate and the second support frame body.

Further, the third welding part also comprises a first moving device for driving the third welding head to move along the track of the joint, and a second moving device for driving the fourth welding head to move along the track of the joint; the fourth welding part further comprises a third moving device for driving the fifth welding head to move along the track of the joint, and a fourth moving device for driving the sixth welding head to move along the track of the joint.

Further, the first conveying device includes a plurality of conveying portions that convey the long round tube; the plurality of conveying parts are sequentially arranged along the conveying direction of the long round tube.

Further, the conveying part comprises a conveying roller and a rotating motor for driving the conveying roller to rotate; and the outer circumferential surface of the conveying roller forms a limiting groove for limiting the long-strip circular tube.

Further, the cutting device includes a cutting portion that cuts the long circular tube.

Further, the cutting part comprises a circular saw blade and a power motor for driving the circular saw blade to rotate; the output end of the power motor is connected with the disc saw blade.

Furthermore, the cutting part also comprises a lifting cylinder for driving the circular saw blade to lift; the output end of the lifting cylinder is connected with the power motor.

Further, the cutting device further comprises an auxiliary device for assisting the cutting of the cutting part.

Further, the auxiliary device comprises a clamping device for fixing the long-strip round tube.

Further, the clamping device comprises a first clamping part and a second clamping part which are used for clamping the long round tube; the first and second clamping portions are at both sides of the disc saw blade.

Further, the first clamping part comprises a first clamping block and a second clamping block; the second clamping part includes a third clamping block and a fourth clamping block.

Further, the clamping device also comprises a fourth movement driving device which drives the second clamping block to move towards the first clamping block and drives the fourth clamping block to move towards the third clamping block.

Further, the fourth movement driving device comprises a first connecting block and a first moving cylinder for driving the first connecting block to move; the second presss from both sides tight piece and the fourth presss from both sides tight piece and all connects on first connecting block, the upper surface of first connecting block forms the groove of stepping down, the groove of stepping down is in the second and presss from both sides between tight piece and the fourth clamp, the output and the first connecting block of first moving cylinder link together.

After adopting the structure, the full-automatic welding production line for the steel tube furniture, provided by the invention, has the following beneficial effects that:

after the long-strip round tubes conveyed by the first conveying device are cut into equally-divided steel tube monomers through the cutting device, paint is sprayed on the outer circumferential surfaces of the steel tube monomers, the paint with different colors is sprayed on the outer circumferential surfaces of different steel tube monomers, a plurality of steel tube monomers sprayed with the paint are connected to the transmission device in different arrangement modes, the steel tube monomers are driven to move along with the transmission device during transmission of the transmission device, desktops formed by different arrangement modes among the steel tube monomers with different colors are presented, color changing is carried out after color matching is seen for a long time, interestingness is improved, life pleasure is improved, meanwhile, through automatic production, labor cost is greatly reduced.

Drawings

FIG. 1 is a schematic perspective view of a full-automatic welding production line for steel tube furniture according to the present invention;

FIG. 2 is a schematic view of the painting mechanism and the insertion mechanism of the present invention;

FIG. 3 is a schematic structural view of the transmission and the first assembly mechanism of the present invention;

FIG. 4 is a schematic structural view of a second assembly mechanism according to the present invention;

fig. 5 is a schematic structural view of the first conveying device and the cutting device of the present invention.

In the figure: 1-a first conveying device, 11-a conveying part, 111-a conveying roller, 112-a limiting groove, 2-a cutting device, 21-a cutting part, 211-a circular saw blade, 212-a power motor, 213-a lifting cylinder, 22-an auxiliary device, 23-a clamping device, 24-a first clamping part, 25-a second clamping part, 241-a first clamping block, 242-a second clamping block, 251-a third clamping block, 252-a fourth clamping block, 26-a first moving driving device, 261-a first connecting block, 262-a first moving cylinder, 263-an abdicating groove, 3-a painting mechanism, 4-a transmission device, 5-a first assembling mechanism, 6-a second assembling mechanism, 7-an inserting mechanism and 31-a painting device, 32-a painting device, 33-a first clamping device, 321-a painting part, 3211-an automatic spray gun, 322-a paint container part, 331-a first clamping part, 3311-a first clamping rod, 3312-a first opening and closing drive device, 332-a first rotation drive device, 333-a first rotation drive device, 334-a first movement drive device, 34-a drying device, 7-an insertion mechanism, 71-a gripping device, 72-a first insertion device, 73-a second insertion device, 711-a first gripping part, 712-a second gripping part, 7111-a first gripping rod, 7112-a second gripping rod, 7113-a second opening and closing drive device, 7121-a third gripping rod, 7122-a fourth gripping rod, 7123-a third opening and closing drive device, 713-a first lifting drive device, 714-second moving driving device, 715-third moving driving device, 721-first electromagnetic adsorption part, 722-first telescopic driving device, 731-second electromagnetic adsorption part, 732-second telescopic driving device, 41-first transmission part, 411-first transmission chain, 412-first chain wheel, 413-second chain wheel, 414-first support frame body, 42-first hand wheel, 51-first assembling device, 52-second clamping device, 53-first welding device, 54-second rotating driving device, 521-second clamping part, 5211-first clamping block, 5212-second clamping block, 5213-fourth opening driving device, 5214-third arc containing groove, 522-third telescopic driving device, 523-second rotating driving device, 531-first welding part, 5311-first welding head, 5312-fourth telescopic driving device, 5313-third rotary driving device, 55-second assembling device, 551-transferring device, 552-second welding device, 553-transferring table, 554-first adsorbing device, 5541-third electromagnetic adsorbing part, 5542-third rotary driving device, 5543-telescopic arm, 5544-fourth rotary driving device, 5521-second welding head, 5522-fifth telescopic driving device, 5523-fifth rotary driving device, 61-supporting and positioning device, 62-fixing device, 63-third welding device, 611-first supporting and fixing part, 621-first magnetic adsorbing device, 622-second magnetic adsorbing device, 6211-first electromagnetic adsorbing part, 6212-first abutting driving device, 6221-a second electromagnetic attraction part, 6222-a second abutting driving device, 631-a third welding part, 632-a fourth welding part, 6311-a third welding head, 6312-a fourth welding head, 6321-a fifth welding head, 6322-a sixth welding head, 6313-a first moving device, 6314-a second moving device, 6323-a third moving device, 6324-a fourth moving device.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.

As shown in fig. 1 to 5, the full-automatic welding production line for steel tube furniture of the present invention comprises a first conveying device 1 for conveying a long round tube, a cutting device 2 for cutting the long round tube into single steel tubes, a painting mechanism 3 for painting the outer circumferential surfaces of the single steel tubes, a transmission device 4 for transmitting the single steel tubes, a first assembling mechanism 5 for connecting the single steel tubes to the transmission device 4 to form a color changing assembly, and a second assembling mechanism 6 for assembling the color changing assembly into a table; the painting mechanism 3 comprises a painting device 31 for spraying paint on the outer circumferential surface of the steel pipe monomer; the painting apparatus 31 includes a plurality of painting apparatuses 32 for painting different colors on the outer circumferential surfaces of different steel pipe units, and a first holding apparatus 33 for holding the steel pipe units to perform a painting process on the respective painting apparatuses 32.

Like this, after cutting into the steel pipe monomer of partition through cutting device 2 with the rectangular pipe of first conveyor 1 transport, with the outer periphery spraying paint of steel pipe monomer, the paint of different colours is sprayed on the outer periphery of different steel pipe monomers, connect many steel pipe monomers of spraying paint on transmission 4 through different arrangement, when transmission 4 transmits, drive the steel pipe monomer along with transmission 4 removes, present the desktop that different arrangement form formed between the steel pipe monomer of different colours, look after a colour collocation is seen for a long time and trade the look, and is more interesting, improve the enjoyment of life, through automatic production simultaneously, the cost of labor has been greatly reduced.

Preferably, the painting device 32 includes a painting portion 321. Painting the outer circumferential surface of the steel pipe monomer through a painting part 321 to dye the steel pipe monomer into a colored steel pipe; specifically, paint of a color is sprayed on the same steel pipe monomer, the steel pipe monomer sprayed with the paint is assembled on the transmission device 4, a plurality of steel pipe monomers of a first color can be assembled firstly, then a plurality of steel pipe monomers of a second color are assembled, the steel pipe monomers of the first color are rotated to the position right above the steel pipe monomer of the second color by the transmission device 4 when the color needs to be changed, the steel pipe monomers of the first color are located below the steel pipe monomer, the purpose of changing the color of the desktop is achieved, specifically, the first color can also occupy all the position right above the steel pipe monomer through the transmission device 4, the first color and the second color respectively occupy half of the steel pipe monomer, or the second color occupies all the steel pipe monomers, the steel pipe monomers of different colors are assembled on the transmission device 4 in different arrangement modes, different desktop collocation can be presented, and interestingness is achieved.

Preferably, in order to improve painting efficiency, the painting part 321 includes a plurality of sets of spray automatic spray guns 3211; the automatic spray gun 3211 includes an automatic spray head, and an output end of the automatic spray head faces the steel pipe unit.

Preferably, in order to increase the contact area between the paint sprayed by the automatic spray guns 3211 and the outer circumferential surface of the single steel pipe, a plurality of groups of automatic spray guns 3211 are sequentially arranged along the axial direction of the single steel pipe.

Preferably, to improve painting efficiency, the painting device 32 further comprises a paint receptacle 322; the paint containing portion 322 is provided with a paint containing cavity for containing paint, a first paint opening is formed in the upper surface of the paint containing portion 322, the first paint opening is communicated with the paint containing cavity, and the paint spraying portion 321 is arranged at the first paint opening.

Preferably, in order to improve the clamping stability, the first clamping device 33 includes a first clamping portion 331 that clamps the single steel pipe.

Preferably, the first clamping part 331 includes a first clamping rod 3311, which is extended into the steel pipe unit to be in contact with an inner wall of the steel pipe unit, a second clamping rod, and a first opening and closing driving device 3312 which drives the first clamping rod 3311 and the second clamping rod to be opened and closed in a horizontal direction. The first opening and closing driving device 3312 drives the first clamping rod 3311 and the second clamping rod to close and then extend into the steel pipe single body, and then drives the first clamping rod 3311 and the second clamping rod to open to abut against the inner wall, so that the steel pipe single body is fixed; specifically, the first opening/closing driving device 3312 is a bidirectional opening/closing cylinder.

Preferably, in order to improve the stability of the clamping, the contact surface of the first clamping rod 3311 and the inner wall of the steel pipe monomer is an arc-shaped surface, and the contact surface of the second clamping rod and the inner wall of the steel pipe monomer is an arc-shaped surface.

Preferably, the first clamping device 33 further includes a first rotation driving device 332 for driving the first clamping portion 331 to rotate, a first rotation driving device 333 for driving the first rotation driving device 332 to rotate, and a first movement driving device 33426 for driving the first clamping portion 331 to move; an output end of the first rotary driving device 332 is connected to the first clamping portion 331, an output end of the first rotary driving device 333 is connected to the first rotary driving device 332, and an output end of the first moving driving device 33426 is connected to the first rotary driving device 333. The first rotary driving device 332 drives the first clamping portion 331 to drive the single steel pipe body to rotate around the axis of the single steel pipe body, so that the outer circumferential surface of the single steel pipe body is completely coated with paint, the first rotary driving device 333 drives the first clamping portion 331 to drive the single steel pipe body to move between the cutting device 2 and the paint spraying device 32, and the first moving driving device 33426 drives the first clamping portion 331 to drive the single steel pipe body to move to the paint spraying device 32 with a required color and the drying device 34 for drying; specifically, the first rotation driving device 332 and the first rotation driving device 333 are driven by a cylinder, the first movement driving device 33426 is a rodless cylinder, and the output end of the rodless cylinder is connected to the first rotation driving device 333.

Preferably, in order to improve the drying efficiency of the paint, the painting mechanism 3 further includes a drying device 34 for performing a drying process on the paint on the steel pipe single body.

Preferably, the plurality of painting devices 32 and the drying device 34 are provided in sequence along the conveying direction of the elongated round tube in order to improve the processing efficiency.

Preferably, the steel pipe single body further comprises an inserting mechanism 77 for assembling a first transmission connecting piece at one end of the steel pipe single body and a second transmission connecting piece at the other end of the steel pipe single body.

Preferably, the insertion mechanism 77 includes a gripping device 71 for gripping the steel duct unit, a first insertion device 72 for mounting a first transmission coupling member at one end of the steel duct unit, and a second insertion device 73 for mounting a second transmission coupling member at the other end of the steel duct unit. The steel pipe single body is fixed through the grabbing device 71, the first insertion device 72 is used for assembling the first transmission connecting piece at one end of the steel pipe single body, and the second insertion device 73 is used for assembling the second transmission connecting piece at the other end of the steel pipe single body.

Preferably, in order to improve the stability of gripping, the gripping device 71 includes a first gripping part 711 and a second gripping part 712 that grip the single steel pipe.

Preferably, in order to improve the stability of the grasping, the first grasping portion 711 includes a first grasping rod 7111, a second grasping rod 7112, and a second opening and closing driving device 7113 that drives the first grasping rod 7111 and the second grasping rod 7112 to open and close; the second grasping portion 712 includes a third grasping rod 7121, a fourth grasping rod 7122, and a third opening and closing driving device 7123 that drives the third grasping rod 7121 and the fourth grasping rod 7122 to open and close; specifically, the second opening/closing driving device 7113 and the third opening/closing driving device 7123 are both bidirectional opening/closing cylinders.

Preferably, in order to improve the gripping stability, first arc-shaped receiving grooves matched with the outer circumferential surfaces of the single steel pipes are formed on the facing surfaces of the first gripping rod 7111 and the second gripping rod 7112; second arc-shaped containing grooves matched with the outer circumferential surfaces of the single steel pipes are formed in the opposite surfaces of the third grabbing rod 7121 and the fourth grabbing rod 7122 respectively.

Preferably, the gripping device 71 further includes a first elevation driving device 713 that drives the first gripping part 711 and the second gripping part 712 to be elevated, a second movement driving device 714 that drives the first gripping part 711 and the second gripping part 712 to move in the axial direction of the single steel pipe, and a third movement driving device 715 that drives the first gripping part 711 and the second gripping part 712 to move in the conveying direction of the long round pipe. The first lifting driving device 713 drives the first grabbing part 711 and the second grabbing part 712 to descend to grab the single steel pipe, the second moving driving device 714 drives the first grabbing part 711 and the second grabbing part 712 to drive the single steel pipe to move along the axial direction of the single steel pipe, so that the first clamping part 331 extends out of the single steel pipe, and the second moving driving device 714 drives the single steel pipe to move to a station where the first insertion device 72 and the second insertion device 73 are assembled; specifically, the first lifting driving device 713 is a first lifting cylinder 213 and a second lifting cylinder 213, an output end of the first lifting cylinder 213 is connected with the first grabbing part 711, an output end of the second lifting cylinder 213 is connected with the second grabbing part 712, the second moving driving device 714 is a rodless cylinder, an output end of the rodless cylinder is connected with the first lifting cylinder 213 and the second lifting cylinder 213, the second moving driving device 714 is a first guide rail, a second guide rail, a first cylinder and a second cylinder, and the fifth cylinder and the sixth cylinder drive the second moving driving device 714 to slide on the first guide rail and the second guide rail.

Preferably, the first inserting device 72 includes a first electromagnetic absorption portion 721 for absorbing the first transmission connection member, and a first telescopic driving device 722 for driving the first electromagnetic absorption portion 721 to assemble the first transmission connection member in the first opening at one end of the steel pipe single body. The first electromagnetic adsorption part 721 adsorbs the first transmission connecting piece, and the first telescopic driving device 722 drives the first electromagnetic adsorption part 721 to assemble the first transmission connecting piece in the first opening of the single steel pipe; specifically, a first clamping protrusion is formed at one end of the first transmission connecting piece, the first clamping protrusion is assembled in the first opening through the first clamping protrusion, and the shape of the first clamping protrusion is matched with that of the first opening; the first transmission connecting piece is made of a material capable of being electromagnetically adsorbed, and the material comprises a first transmission connecting piece made of iron; the first telescopic driving device 722 is driven by a telescopic cylinder. The first electromagnetic absorption portion 721 generates an absorption force on the absorption surface when the power is on, correspondingly absorbs the first transmission connector, and when the first transmission connector is assembled, the power is off to make the magnetic field disappear.

Preferably, the second inserting device 73 includes a second electromagnetic absorption part 731 absorbing the second transmission connector, and a second telescopic driving device 732 driving the second electromagnetic absorption part 731 to fit the second transmission connector into the second opening at the other end of the single steel pipe. The second electromagnetic adsorption part 731 adsorbs the second transmission connecting piece, and the second telescopic driving device 732 drives the second electromagnetic adsorption part 731 to assemble the second transmission connecting piece in the second opening of the single steel pipe; specifically, a second clamping protrusion is formed at one end of the second transmission connecting piece, the second clamping protrusion is assembled in the second opening through the second clamping protrusion, and the shape of the second clamping protrusion is matched with that of the second opening; the second transmission connecting piece is made of a material capable of being electromagnetically adsorbed, and the material comprises a second transmission connecting piece made of iron; the second telescopic driving means 732 is driven by a telescopic cylinder. The second electromagnetic absorption part 731 generates an absorption force on the absorption surface when being powered on, correspondingly absorbs the second transmission connecting piece, and when the second transmission connecting piece is assembled, the power is cut off to make the magnetic field disappear.

Preferably, the transmission means 4 includes a first transmission part 41 assembled at one end of the plurality of steel pipe units, and a second transmission part assembled at the other end of the plurality of steel pipe units. The steel pipe monomer through the different colour of a plurality of spraying paints assembles between first transmission 41 and second transmission, through connecting a plurality of steel pipe monomers in first transmission 41 and second transmission through different arrangement, when first transmission 41 and second transmission, drive the steel pipe monomer along with transmission 4 removes, present the desktop of the different colour collocation of different arrangement formation between the steel pipe monomer of different colours, look after a colour collocation is seen for a long time and trade the look, and is more interesting, and the enjoyment of life is improved.

Preferably, the first transmission part 41 includes a first transmission chain 411, a first sprocket 412 and a second sprocket 413; the first transmission chain 411 is disposed around the first sprocket 412 and the second sprocket 413. The steel pipe single body is assembled on the first connecting shaft and the second connecting shaft by welding the first connecting shaft and the second connecting shaft on the first outer link plate of the first driving chain 411 of the first driving part 41 and the second outer link plate corresponding to the second driving chain of the second driving part, respectively.

Preferably, the second transmission part includes a second transmission chain, a third sprocket and a fourth sprocket; the second transmission chain is wound around the third chain wheel and the fourth chain wheel. When the third sprocket is rotated, the third sprocket drives the second transmission chain to rotate, the second transmission chain drives the steel pipe monomer to move along the motion track of the second transmission chain, and simultaneously drives the first transmission chain 411 to rotate, so that the steel pipe monomer is switched from the current color matching combination to another color matching combination.

Preferably, in order to facilitate the subsequent assembly of the first transmission part 41 and the second transmission part into a table, the transmission device 4 is further provided with a first support frame 414 for supporting the first transmission part 41, and a second support frame for supporting the second transmission part.

Preferably, the transmission 4 further comprises a first handwheel 42 for driving the first chain wheel 412 to rotate, and a second handwheel for driving the third chain wheel to rotate; a first connecting hole is formed on the first support frame 414, and the first hand wheel 42 passes through the first connecting hole and is rotatably connected with the first chain wheel 412 through a first rotating shaft; and a second connecting hole is formed in the second support frame body, and the second hand wheel passes through the second connecting hole and is rotatably connected with the third chain wheel through a second rotating shaft. The first chain wheel 412 is rotated by the first hand wheel 42, the second hand wheel rotates the third chain wheel, the first chain wheel 412 is rotated to drive the first transmission chain 411 to rotate and enable the steel pipe monomer to move along the movement direction of the first transmission chain 411, the third chain wheel rotates to drive the second transmission chain to rotate and enable the steel pipe monomer to move along the movement direction of the second transmission chain, and the steel pipe monomer is switched to another color matching combination from the current color matching combination.

Preferably, the first fitting mechanism 5 includes a first fitting device 51 that fits a first connecting shaft on each first outer link plate of the first transmission chain 411, and a second connecting shaft on each second outer link plate of the second transmission chain.

Preferably, the first assembling device 51 includes a second holding device 52 for holding the first connecting shaft at a predetermined position of each of the first outer link plates and holding the second connecting shaft at a predetermined position of the second outer link plate, a first welding device 53 for welding the joint of the first connecting shaft and the first outer link plate or the second connecting shaft and the second outer link plate, and a second rotation driving device 54 for driving the first sprocket 412 or the third sprocket to rotate. The second clamping device 52 clamps the first connecting shaft on a preset position of the first outer chain plate, the axis of the first connecting shaft is perpendicular to the end face of the first outer chain plate, the second rotation driving device 54 drives the first chain wheel 412 to drive the first transmission chain 411 to rotate, and when one first connecting shaft is assembled, the next first outer chain plate is rotated to a position corresponding to the second clamping device 52; the second connecting shaft is clamped and placed at a predetermined position of the second outer link plate by the second clamping device 52, the axis of the second connecting shaft is perpendicular to the end face of the second outer link plate, the second rotation driving device 54 drives the third chain wheel to drive the second transmission chain to rotate, and when one second connecting shaft is assembled, the next second outer link plate is rotated to a position corresponding to the second clamping device 52.

Preferably, in order to facilitate clamping of the first connecting shaft or the second connecting shaft, the second clamping device 52 includes a second clamping portion 521 for clamping the first connecting shaft or the second connecting shaft.

Preferably, the second clamping part 521 includes a first clamping block 5211, a second clamping block 5212, and a fourth opening and closing driving device 5213 for driving the first clamping block 5211 and the second clamping block 5212 to open and close; third arc-shaped receiving grooves 5214 matched with the outer circumferential surfaces of the first connecting shaft or the second connecting shaft are formed in the facing surfaces of the first holding block 5211 and the second holding block 5212, respectively. The first holding block 5211 and the second holding block 5212 are driven to open and close by the fourth opening and closing driving device 5213 to hold the first connecting shaft or the second connecting shaft, and the first holding block 5211 and the second holding block 5212 are more stably held by the third arc-shaped accommodating groove 5214; specifically, the fourth opening and closing driving device 5213 is a bidirectional opening and closing cylinder having a first output end and a second output end, the first holding block 5211 is connected to the first output end, and the second holding block 5212 is connected to the second output end.

Preferably, the second clamping device 52 further comprises a third telescopic driving device 522 for driving the second clamping part 521 to be telescopic and a second rotary driving device 523 for driving the second clamping part 521 to rotate. The second clamping part 521 is driven by the second rotary driving device 523 to rotate to a clamping station of the first connecting shaft or the second connecting shaft to clamp the first connecting shaft or the second connecting shaft and then rotate to the position of the first outer chain plate or the second outer chain plate, the third telescopic driving device 522 drives the second clamping part 521 to place the clamped first connecting shaft on the first outer chain plate, and the second connecting shaft is placed on the second outer chain plate; specifically, the third telescopic driving device 522 is driven by a telescopic cylinder, and the second rotary driving device 523 is driven by a rotary cylinder.

Preferably, the first welding device 53 includes a first welding part 531 that welds the inside of the first connecting shaft and the first outer link plate or the inside of the second connecting shaft and the second outer link plate. When the second clamping portion 521 clamps the first connecting shaft at a predetermined position of the first outer link plate, the first welding part 531 welds the inner side where the first connecting shaft and the first outer link plate are connected; or the second connecting shaft is clamped at a predetermined position of the second outer link plate, and the first welding part 531 welds the inner side where the second connecting shaft and the second outer link plate are connected.

Preferably, the first welding part 531 includes a first welding head 5311, a fourth telescopic driving device 5312 driving the first welding head 5311 to be telescopic, and a third rotary driving device 5313 driving the first welding head 5311 to be rotary. By the cooperation of the fourth telescopic driving device 5312 and the third rotary driving device 5313, the first welding head 5311 is welded along the outer circumference of the inner side of the joint of the first connecting shaft and the first outer link plate, and the first welding head 5311 is welded along the outer circumference of the inner side of the joint of the second connecting shaft and the second outer link plate; specifically, the fourth telescopic driving means 5312 is driven by a telescopic cylinder, and the third rotary driving means 5313 is driven by a rotary cylinder.

Preferably, in order to improve the assembly efficiency, the first assembly mechanism 5 further includes a second assembly device 55 for connecting one end of the single steel pipe to the first connecting shaft and the other end of the single steel pipe to the corresponding second connecting shaft.

Preferably, in order to improve the assembling efficiency, the second assembling apparatus 55 includes a transfer apparatus 551 of the first coupling shaft that transfers the single steel pipe body to the first transmission part 41, and a second welding apparatus 552 that welds the first transmission connector and the first coupling shaft of the single steel pipe body together.

Preferably, the transfer device 551 includes a transfer stage 553 for supporting the single steel pipe, and a first adsorption device 554 for adsorbing the single steel pipe on the transfer stage 553. The steel pipe single body which is sprayed with paint and dried and is provided with the first transmission connecting piece and the second transmission connecting piece is placed on a transfer table 553, a first adsorption device 554 adsorbs the steel pipe single body on the transfer table 553, and the steel pipe single body is moved to a first connecting shaft; specifically, a first through hole for the first connecting shaft to pass through is formed in the end face of the first transmission connecting piece, a second through hole for the second connecting shaft to pass through is formed in the end face of the second transmission connecting piece, the first connecting shaft passes through the first through hole, and the first connecting shaft and the first transmission connecting piece are welded together by a second welding device 552; after the first connecting shafts on the first outer link plates of the first transmission part 41 are welded with the steel pipe single bodies, the second connecting shafts of the second outer link plates of the second transmission part penetrate through the second through holes of the second transmission connecting pieces of the corresponding steel pipe single bodies.

Preferably, the first suction device 554 includes a third electromagnetic absorption portion 5541, a third rotation driving device 5542 driving the third electromagnetic absorption portion 5541 to rotate, a telescopic arm 5543 driving the third electromagnetic absorption portion 5541 to telescope, and a fourth rotation driving device 5544 driving the telescopic arm 5543 to rotate. The third electromagnetic absorption part 5541 is rotated to one side of the transfer stage 553 by the fourth rotation driving device 5544, the telescopic arm 5543 drives the third electromagnetic absorption part 5541 to ascend and descend and to be telescopic to absorb the single steel pipe, the fourth rotation driving device 5544 drives the third electromagnetic absorption part 5541 to rotate to one side of the first transmission chain 411 again, the third rotation driving device 5542 rotates the third electromagnetic absorption part 5541 to rotate the single steel pipe, so that the axis of the single steel pipe is parallel to the axis of the first connecting shaft, and then the first through hole is aligned with the first connecting shaft to be put in; specifically, the third rotation driving device 5542 and the fourth rotation driving device 5544 are both driven by a rotary cylinder, the telescopic arm 5543 comprises a first connecting arm, a second connecting arm, a third connecting arm, a fourth connecting arm and a fifth connecting arm, and all adjacent connecting arms are connected together through a motor; the steel pipe single body is made of a material capable of being electromagnetically adsorbed, and the material comprises a steel pipe single body made of iron.

Preferably, in order to improve the adsorption effect, a fourth arc-shaped accommodating groove for accommodating the steel pipe single body is formed on a contact surface of the third electromagnetic adsorption portion 5541 and the steel pipe single body.

Preferably, in order to improve the welding efficiency, the second welding device 552 includes a second welding part that welds the junction of the first connection shaft and the first transmission connector or the junction of the second connection shaft and the second transmission connector.

Preferably, the second welding unit includes a second welding head 5521, a fifth expansion driving device 5522 driving the second welding head 5521 to expand and contract, and a fifth rotation driving device 5523 driving the second welding head 5521 to rotate along the outer circumferential surface of the first connection shaft. Through the cooperation of the fifth rotation driving device 5523 and the fifth expansion driving device 5522, the second welding head 5521 is welded along the outer circumferential surface of the inner side of the joint of the first connecting shaft and the first transmission connecting piece; specifically, the fifth rotation driving device 5523 is driven by a rotation cylinder, and the fifth telescopic driving device 5522 is driven by a telescopic cylinder.

Preferably, in order to improve the assembling efficiency, the second assembling mechanism 6 includes a supporting and positioning device 61 for supporting and positioning the first transmission part 41 and the second transmission part, a fixing device 62 for fixing the first side plate to one side of the first transmission part 41 and the second transmission part and fixing the second side plate to the other side of the first transmission part 41 and the second transmission part, and a third welding device 63 for welding the joint of the first side plate and the first transmission part 41 and the second transmission part and the joint of the second side plate and the first transmission part 41 and the second transmission part.

Preferably, in order to improve the assembling efficiency, the supporting and positioning device 61 includes a first supporting and fixing portion 611 for supporting and fixing the first transmission portion 41, and a second supporting and fixing portion for supporting and fixing the second transmission portion.

Preferably, the first supporting and fixing part 611 includes a first supporting leg and a second supporting leg connected to the bottom end of the first supporting frame 414; the second support fixing part comprises a third supporting leg and a fourth supporting leg which are connected to the bottom end of the second support frame body; the first supporting leg and the third supporting leg are arranged in parallel and level, the second supporting leg and the fourth supporting leg are arranged in parallel and level, and the distance between the first supporting leg and the second supporting leg is equal to the distance between the third supporting leg and the fourth supporting leg. A first clamping interface for the first supporting leg to be inserted and a second clamping interface for the second supporting leg to be inserted are formed at the bottom end of the first supporting frame body 414; the bottom of the second support frame body is provided with a third clamping interface for inserting the third supporting legs and a fourth clamping interface for inserting the fourth supporting legs.

Preferably, the fixing device 62 includes a first magnetic attraction 621 for fixing the first side plate to one side of the first transmission part 41 and the second transmission part, and a second magnetic attraction 622 for fixing the second side plate to the other side of the first transmission part 41 and the second transmission part. First curb plate and second curb plate are the material that can be adsorbed by the electromagnetism, and this material includes first curb plate and the second curb plate of being made by iron.

Preferably, the first magnetic attracting device 621 includes a first electromagnetic attracting portion 6211 and a first abutting driving device 6212 for driving the first electromagnetic attracting portion 6211 to abut against; the second magnetic attracting device 622 includes a second electromagnetic attracting portion 6221 and a second abutting driving device 6222 for driving the second electromagnetic attracting portion 6221 to abut against. After the first side plate is attracted by the first electromagnetic attraction part 6211, the first abutting driving device 6212 fixes the first side plate on one side of the first support frame 414 and one side of the second support frame; after the second side plate is attracted by the second electromagnetic attraction part 6221, the second abutting driving device 6222 fixes the second side plate to the other side of the first support frame 414 and the second support frame.

Preferably, in order to improve the assembly efficiency, the third welding device 63 includes a third welding portion 631 welding the connection of the first side plate and the first and second transmission parts 41 and 632 welding the connection of the second side plate and the first and second transmission parts 41 and 632.

Preferably, in order to improve the assembly efficiency, the third welding part 631 includes a third welding head 6311 that welds the joint of the first side plate and the first support frame 414, and a fourth welding head 6312 that welds the joint of the first side plate and the second support frame; the fourth welding part 632 includes a fifth welding head 6321 that welds a junction of the second side plate and the first support frame 414, and a sixth welding head 6322 that welds a junction of the second side plate and the second support frame.

Preferably, the third welding part 631 further includes a first moving device 6313 that drives the third welding head 6311 to move along the trajectory of the joint, and a second moving device 6314 that drives the fourth welding head 6312 to move along the trajectory of the joint; the fourth welding part 632 further includes a third moving device 6323 that drives the fifth welding head 6321 to move along the trajectory of the joint, and a fourth moving device 6324 that drives the sixth welding head 6322 to move along the trajectory of the joint. The first moving device 6313 includes a first telescopic cylinder driving the third welding head 6311 to stretch, a first rodless cylinder driving the third welding head 6311 to move left and right, a first slide rail, a second slide rail, and a first power cylinder and a second power cylinder driving the first rodless cylinder to slide up and down on the first slide rail and the second slide rail; the output end of the first telescopic cylinder is connected with the third welding head 6311, and the output end of the first rodless cylinder is connected with the first telescopic cylinder; the second moving device 6314 includes a second telescopic cylinder driving the fourth welding head 6312 to stretch, a second rodless cylinder driving the fourth welding head 6312 to move left and right, a third slide rail, a fourth slide rail, and a third power cylinder and a fourth power cylinder driving the second rodless cylinder to slide up and down on the third slide rail and the fourth slide rail; the output end of the second telescopic cylinder is connected with the fourth welding head 6312, and the output end of the second rodless cylinder is connected with the second telescopic cylinder; the third moving device 6323 includes a third telescopic cylinder for driving the fifth welding head 6321 to stretch, a third rodless cylinder for driving the fifth welding head 6321 to move left and right, a fifth slide rail, a sixth slide rail, and a fifth power cylinder and a sixth power cylinder for driving the third rodless cylinder to slide up and down on the fifth slide rail and the sixth slide rail; the output end of the third telescopic cylinder is connected with a fifth welding head 6321, and the output end of the third rodless cylinder is connected with the third telescopic cylinder; the fourth moving device 6324 includes a fourth telescopic cylinder for driving the sixth welding head 6322 to stretch, a fourth rodless cylinder for driving the sixth welding head 6322 to move left and right, a seventh slide rail, an eighth slide rail, and a seventh power cylinder and an eighth power cylinder for driving the fourth rodless cylinder to slide up and down on the seventh slide rail and the eighth slide rail; the output of the fourth telescopic cylinder is connected with a sixth welding head 6322, and the output of the fourth rodless cylinder is connected with the fourth telescopic cylinder.

Preferably, in order to improve the stability of conveying the long round pipe, the first conveying device 1 includes a plurality of conveying portions 11 that convey the long round pipe; the plurality of conveying units 11 are arranged in order along the conveying direction of the long round tube.

Preferably, in order to improve the stability of conveying the elongated circular tube, the conveying portion 11 includes a conveying roller 111, and a rotating motor that drives the conveying roller 111 to rotate; the outer circumferential surface of the conveying roller 111 forms a stopper groove 112 for restricting the long circular tube.

Preferably, the cutting device 2 comprises a cutting section 21 for cutting the elongated circular tube. The long round tube is cut one by one into divided single steel tubes by the cutting section 21.

Preferably, in order to improve cutting efficiency, the cutting part 21 includes a circular saw blade 211, and a power motor 212 for driving the circular saw blade 211 to rotate; the output of the power motor 212 is coupled to the circular saw blade 211.

Preferably, in order to improve the cutting efficiency, the cutting part 21 further includes a lifting cylinder 213 for driving the circular saw blade 211 to ascend and descend; the output end of the lifting cylinder 213 is connected with the power motor 212.

Preferably, in order to improve cutting stability, the cutting device 2 further includes an auxiliary device 22 for assisting the cutting of the cutting portion 21.

Preferably, to improve the cutting stability, the auxiliary device 22 comprises a clamping device 23 for fixing the elongated circular tube.

Preferably, in order to improve cutting stability, the clamping device 23 comprises a first clamping portion 24 and a second clamping portion 25 for clamping the long round tube; the first clamping portion 24 and the second clamping portion 25 are located at both sides of the circular saw blade 211.

Preferably, the first clamping portion 24 comprises a first clamping block 241 and a second clamping block 242; the second clamping portion 25 includes a third clamping block 251 and a fourth clamping block 252. The first clamping block 241 and the second clamping block 242 clamp the front end of the long circular tube, and the third clamping block 251 and the fourth clamping block 252 clamp the rear end of the long circular tube, so that the circular saw blade 211 is more stable when cutting the long circular tube.

Preferably, in order to improve the stability of clamping, the clamping device 23 further includes a fourth movement driving device for driving the second clamping block 242 to move toward the first clamping block 241, and for driving the fourth clamping block 252 to move toward the third clamping block 251.

Preferably, the fourth movement driving means includes a first link block 261, and a first movement cylinder 262 driving the first link block 261 to move; the second and fourth clamping blocks 242 and 252 are coupled to the first coupling block 261, a relief groove 263 is formed on an upper surface of the first coupling block 261, the relief groove 263 is located between the second and fourth clamping blocks 242 and 252, and an output end of the first moving cylinder 262 is coupled to the first coupling block 261. The first moving cylinder 262 drives the first connecting block 261 to move towards the first clamping block 241 and the third clamping block 251, so that the first clamping block 241 and the second clamping block 242 clamp the long circular tube, the third clamping block 251 and the fourth clamping block 252 clamp the long circular tube, and the arrangement of the abdicating groove 263 avoids interference with the cutting operation of the disc saw blade 211.

The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.

Claims (10)

1. The utility model provides a steel pipe furniture full automatization welding production line which characterized in that: the device comprises a first conveying device for conveying a long-strip round pipe, a cutting device for cutting the long-strip round pipe into single steel pipes, a painting mechanism for painting the outer circumferential surfaces of the single steel pipes, a transmission device for transmitting the single steel pipes, a first assembling mechanism for connecting the single steel pipes to the transmission device to form a color changing assembly, and a second assembling mechanism for assembling the color changing assembly into a table; the painting mechanism comprises a painting device for spraying paint on the outer circumferential surface of the steel pipe monomer; the painting device comprises a plurality of painting devices for spraying paints with different colors on the outer circumferential surfaces of different steel pipe monomers and a first clamping device for clamping the steel pipe monomers to perform painting treatment on each painting device.

2. The steel tube furniture full-automatic welding production line of claim 1, characterized in that: the painting device includes a painting portion.

3. The steel tube furniture full-automatic welding production line of claim 2, characterized in that: the paint spraying part comprises a plurality of groups of automatic spraying guns; the automatic spray gun comprises an automatic spray nozzle, and the output end of the automatic spray nozzle faces towards the steel pipe monomer.

4. The steel tube furniture full-automatic welding production line of claim 3, characterized in that: and the plurality of groups of spraying automatic spray guns are sequentially arranged along the axial direction of the steel pipe monomer.

5. The steel tube furniture full-automatic welding production line of claim 4, characterized in that: the paint spraying device also comprises a paint accommodating part; the paint containing part is provided with a paint containing cavity for containing paint, a first paint opening is formed in the upper surface of the paint containing part, the first paint opening is communicated with the paint containing cavity, and the paint spraying part is arranged at the first paint opening.

6. The full-automatic welding production line for the steel tube furniture as claimed in claim 5, characterized in that: the first clamping device comprises a first clamping part for clamping the single steel pipe.

7. The full-automatic welding production line for the steel tube furniture as claimed in claim 6, characterized in that: the first clamping part comprises a first clamping rod, a second clamping rod and a first opening and closing driving device, wherein the first clamping rod and the second clamping rod stretch into the steel pipe single body and are in contact with the inner wall of the steel pipe single body, and the first opening and closing driving device drives the first clamping rod and the second clamping rod to open and close along the horizontal direction.

8. The full-automatic welding production line for the steel tube furniture as claimed in claim 7, characterized in that: the contact surface of the first clamping rod and the inner wall of the steel pipe monomer is an arc-shaped surface, and the contact surface of the second clamping rod and the inner wall of the steel pipe monomer is an arc-shaped surface.

9. The full-automatic steel pipe furniture welding production line of claim 8, characterized in that: the first clamping device further comprises a first rotation driving device for driving the first clamping part to rotate, a first rotation driving device for driving the first rotation driving device to rotate, and a first movement driving device for driving the first clamping part to move; the output end of the first rotary driving device is connected with the first clamping part, the output end of the first rotary driving device is connected with the first rotary driving device, and the output end of the first movable driving device is connected with the first rotary driving device.

10. The steel tube furniture full-automatic welding production line of claim 9, characterized in that: the painting mechanism further comprises a drying device for drying the paint on the steel pipe monomer.

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