CN112756924A

CN112756924A - Full-automatic welding device and method for steel pipe furniture

Info

Publication number: CN112756924A
Application number: CN202110040141.6A
Authority: CN
Inventors: 郑冬荣; 郑凯民
Original assignee: Zhangzhou Dongrong Industry And Trade Co ltd
Current assignee: Zhangzhou Dongrong Industry And Trade Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-05-07

Abstract

The invention provides a full-automatic welding device for steel pipe furniture, which comprises a forming mechanism for processing a triangular steel pipe, a painting device for painting the outer surface of the triangular steel pipe, a polishing mechanism for polishing two end faces of the triangular steel pipe, a transmission device for changing colors of the triangular steel pipe, a first assembling mechanism for assembling the transmission device into a table main body, and a second assembling mechanism for connecting the triangular steel pipe to the transmission device. The invention improves the production efficiency and greatly reduces the labor cost through high-automation production. The invention also provides a full-automatic welding method for the steel tube furniture.

Description

Full-automatic welding device and method for steel pipe furniture

Technical Field

The invention relates to the technical field of furniture manufacturing, in particular to a full-automatic welding device and method 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, does not have the variety, is unfavorable for improving life enjoyment, and relies on the manual work to splice each part one by one in the process mostly, and production efficiency is not high simultaneously also does not benefit to and reduces the cost of labor.

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

Disclosure of Invention

An object of the embodiments of the present invention is to provide a full-automatic welding device for steel tube furniture, so as to solve the problems of low production efficiency and inconvenience for reducing labor cost in the background art.

The embodiment of the invention has the two aims of providing the full-automatic welding method for the steel tube furniture, the steel tube table is manufactured by the method, the automation degree is improved, the production efficiency is improved, the precision of each part and the connection precision among the parts are ensured, and the labor cost is reduced; the invention enables the table top to have diversity and interest, and well changes the table top matched with other colors after one color is tired.

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

the utility model provides a full-automatic welding set of steel pipe furniture, is including the forming mechanism who processes out the triangle-shaped steel pipe, carries out the japanning device that paints to the surface of triangle-shaped steel pipe, carries out the grinding machanism that polishes to the both ends face of triangle-shaped steel pipe, trades the transmission of look to the triangle-shaped steel pipe, assembles the first assembly devices of transmission into the desk main part to and connect the second assembly devices on transmission with the triangle-shaped steel pipe.

Further, the transmission device comprises a first transmission part and a second transmission part which are used for rotating the triangular steel pipe.

Further, the first transmission part comprises a plurality of first turning wheels, and the second transmission part comprises a plurality of second turning wheels.

Further, the first transmission part also comprises a first rotation driving device for driving the plurality of first turnover wheels to rotate.

Furthermore, a first connecting shaft is formed at one end of the first turnover wheel, which is far away from the triangular steel pipe; the first rotary driving device comprises first chains wound around the adjacent first connecting shafts and first chain wheels in matched transmission with the first chains.

Furthermore, the second transmission part also comprises a second rotation driving device for driving the plurality of second turnover wheels to rotate.

Further, a second connecting shaft is formed at one end, far away from the triangular steel pipe, of the second overturning wheel; the second rotary driving device comprises second chains wound around the adjacent second connecting shafts and second chain wheels in matched transmission with the second chains.

Further, the first transmission part is provided with a first support frame body for supporting the plurality of first turnover wheels; the second transmission part is provided with a second support frame body for supporting the second turnover wheels.

Further, the first rotary drive device further comprises a first hand wheel; the first hand wheel penetrates through the first support frame body and is rotatably connected with the first connecting shaft; the second rotary driving device also comprises a second hand wheel; the second hand wheel penetrates through the second support frame body and is connected with the second connecting shaft in a rotating mode.

Further, the forming mechanism comprises a forming device for gradually extruding the circular long pipe into the triangular long pipe and a cutting device for cutting the triangular long pipe into the triangular steel pipe.

Further, the molding device includes a plurality of pressing devices that press the outer wall of the circular elongated tube.

Further, the extruding device includes a plurality of extruding rollers for extruding the outer wall of the circular elongated tube.

Further, the diameter sizes of the extrusion rollers are equal, and the extrusion rollers are gradually inclined downwards along the conveying direction of the round long pipe.

Further, the axes of the plurality of squeezing rollers are arranged in parallel, and the plurality of squeezing rollers are arranged in parallel along the conveying direction of the round long pipe.

Further, a plurality of the extruding devices are arranged around the outer circumferential surface of the circular long pipe at equal intervals.

Further, the forming device is provided with a third support frame body for supporting the plurality of extrusion devices.

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

Further, the cutting part comprises a circular saw blade and a rotating motor for driving the circular saw blade to rotate; the output end of the rotating 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 rotating motor.

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

Further, the auxiliary device includes a first fixing device that fixes the triangular long tube.

Further, the first fixing device comprises a first clamping part and a second clamping part which are used for clamping the triangular long pipe; 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 portion includes a third clamping block and a fourth clamping block.

Furthermore, the first fixing device also comprises a first 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 first moving driving device comprises a first connecting block and a first moving air cylinder for driving the first connecting block to move; the second clamping block and the fourth clamping block are connected to the first connecting block, a yielding groove is formed in the upper surface of the first connecting block, and the output end of the first movable air cylinder is connected with the first connecting block.

Further, the auxiliary device also comprises an auxiliary conveying part for assisting the conveying of the triangular long pipe.

Further, the auxiliary conveying part comprises an auxiliary roller and an auxiliary motor for driving the auxiliary roller to rotate; the periphery of the auxiliary roller is provided with a first limiting groove for limiting the triangular long pipe, and the output end of the auxiliary motor is connected with the auxiliary roller.

Further, the forming mechanism further comprises a first conveying device for conveying the round long pipe.

Further, the first conveying device comprises a first conveying part and a second conveying part which are used for conveying the round long pipe.

Further, the first conveying part comprises a first conveying roller and a first motor for driving the first conveying roller to rotate; and a second limiting groove for limiting the round long pipe is formed on the circumferential surface of the first conveying roller, and the output end of the first motor is connected with the first conveying roller.

Further, the second conveying part comprises a second conveying roller and a second motor for driving the second conveying roller to rotate; and a third limiting groove for limiting the round long pipe is formed on the circumferential surface of the second conveying roller, and the output end of the second motor is connected with the second conveying roller.

Further, the painting device comprises a plurality of painting devices for painting different colors on the surfaces of the triangular steel pipes and a clamping device for clamping the triangular steel pipes to perform painting treatment on the painting devices; the plurality of painting devices are sequentially arranged along the conveying direction of the round long pipe.

Further, the painting device comprises a painting part.

Further, the painting part comprises a plurality of groups of painting brushes.

Furthermore, a plurality of groups of painting brushes are arranged along the length direction of the triangular steel pipe.

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

Further, the painting device also comprises a first lifting driving device for driving the painting part to lift; the output end of the first lifting driving device is connected with the painting part.

Further, the clamping device comprises a third clamping part for clamping the triangular steel pipe.

Further, the third clamping part comprises a first clamping rod and a second clamping rod which stretch into the triangular steel pipe and are in contact with the inner wall of the triangular steel pipe, and a first opening and closing driving device which drives the first clamping rod and the second clamping rod to open and close along the horizontal direction.

Further, the clamping device also comprises a third rotation driving device for driving the third clamping part to rotate, a first rotation driving device for driving the third clamping part to rotate, and a second movement driving device for moving along the conveying direction of the round long pipe; the output end of the third rotation driving device is connected with the third clamping part, the output end of the first rotation driving device is connected with the third rotation driving device, and the output end of the second movement driving device is connected with the first rotation driving device.

Further, the painting device also comprises a drying device for drying the painted triangular steel pipe.

Further, the polishing mechanism comprises a grabbing device for grabbing the triangular steel pipe and a polishing device for polishing two end faces of the triangular steel pipe.

Further, the grabbing device comprises a grabbing part for grabbing the triangular steel pipe.

Further, the grabbing part comprises a first grabbing hand, a second grabbing hand and a second opening and closing driving device for driving the first grabbing hand and the second grabbing hand to open and close.

Further, the grabbing device further comprises a second lifting driving device for driving the grabbing part to lift, a third moving driving device for driving the grabbing part to move along the length direction of the triangular steel pipe, and a fourth moving driving device for driving the grabbing part to move along the conveying direction of the round long pipe.

Further, the grinding device comprises a first grinding part for grinding one end of the triangular steel pipe and a second grinding part for grinding the other end of the triangular steel pipe.

Further, the first grinding section includes a first grinding disc, and the second grinding section includes a second grinding disc.

Further, the first polishing part also comprises a first telescopic driving device for driving the first polishing circular disc to stretch and retract along the axial direction of the first polishing circular disc, and the output end of the first telescopic driving device is connected with the first polishing circular disc; the second polishing part further comprises a second telescopic driving device for driving the second polishing disc to stretch along the axial direction of the second polishing disc, and the output end of the second telescopic driving device is connected with the second polishing disc.

Further, first assembly devices includes the second fixing device who advances line location to first table foot, advances line location's second fixing device to second table foot, places first transmission portion in the first adsorption equipment of one side of first table foot and second table foot upper surface, places the second transmission portion in the second adsorption equipment of the opposite side of first table foot and second table foot upper surface, welds the junction of first transmission portion and first table foot and second table foot and carries out the first welding set that welds to the junction of second transmission portion and first table foot and second table foot.

Further, the second fixing device comprises a first electromagnetic suction part and a third telescopic driving device for driving the first electromagnetic suction part to stretch; the third fixing device comprises a second electromagnetic magnetic suction part and a fourth telescopic driving device for driving the second electromagnetic magnetic suction part to stretch.

Further, the first adsorption device comprises a first electromagnetic adsorption part and a first moving device for driving the first electromagnetic adsorption part to move along a preset track; the second adsorption device comprises a second electromagnetic adsorption part and a second moving device for driving the second electromagnetic adsorption part to move along a preset track.

Further, the first welding device comprises a first welding part for welding the connecting part of the first transmission part and one side surface of the first table leg and the second table leg, and a second welding part for welding the connecting part of the second transmission part and the other side surface of the first table leg and the second table leg.

Further, the first welding part comprises a first welding head, a fifth movement driving device for driving the first welding head to move along the transmission direction of the first transmission part, and a third lifting driving device for driving the first welding head to lift; the second welding part comprises a second welding head, a sixth movement driving device for driving the second welding head to move along the transmission direction of the second transmission part, and a fourth lifting driving device for driving the second welding head to lift.

Further, the second assembling mechanism comprises a bearing part for bearing the table main body, a transfer device for transferring the triangular steel pipe between the first turnover wheel and the second turnover wheel, and a second welding device for welding the triangular steel pipe on the end faces of the first turnover wheel and the second turnover wheel.

Further, the transfer device comprises a transfer table for bearing the triangular steel pipe, a third adsorption device for adsorbing the triangular steel pipe on the transfer table, and a first clamping device for clamping the triangular steel pipe adsorbed by the third adsorption device.

Further, the transfer table comprises a bearing part for bearing the triangular steel pipe and a limiting part for limiting the triangular steel pipe; the upper surface of the supporting part forms a transfer inclined plane which is gradually inclined downwards along the conveying direction of the round long pipe, and the limiting part is arranged on one side of the transfer inclined plane.

Further, the third adsorption device comprises a third electromagnetic adsorption part and a third moving device for driving the third electromagnetic adsorption part to move along a preset track.

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

Further, the first gripping section includes a first gripping hand and a second gripping hand; the first clamping hand comprises a first clamping plate and a second clamping plate, the second clamping plate is connected to the end face of the first clamping plate, and the second clamping plate and the first clamping plate form a first clamping groove clamped on the outer wall of the triangular steel pipe; the triangular steel pipe is provided with a first steel plate, a second steel plate and a third steel plate which are sequentially and adjacently arranged; the angle formed by the second clamping plate and the first clamping plate is equal to the angle formed by the first steel plate and the second steel plate of the triangular steel pipe; the second clamping hand comprises a third clamping plate and a fourth clamping plate, the fourth clamping plate is connected to the end face of the third clamping plate, and the fourth clamping plate and the third clamping plate form a second clamping groove clamped on the outer wall of the triangular steel pipe; the angle formed by the third clamping plate and the fourth clamping plate is equal to the angle formed by the first steel plate and the third steel plate of the triangular steel pipe.

Further, the first clamping part further comprises a third opening and closing driving device for driving the first clamping hand and the second clamping hand to open and close.

Further, the first gripping device further includes a second rotation driving device that drives the first gripping section to rotate, and a seventh movement driving device that drives the first gripping section to move.

Further, the second welding device comprises a third welding part for welding the triangular steel pipe and the contact edge of the first turnover wheel and a fourth welding part for welding the triangular steel pipe and the contact edge of the second turnover wheel.

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

Further, the bearing part comprises a bearing conveyer belt and a transmission driving device for driving the bearing conveyer belt to transmit.

Further, the second assembly mechanism further comprises a third welding device for welding the connecting positions of the first transmission part and the second transmission part, and the bottom ends of the first table leg and the second table leg.

Further, the third welding device comprises a fifth welding part for welding the joint of the first transmission part and the bottom ends of the first table leg and the second table leg, and a sixth welding part for welding the joint of the second transmission part and the bottom ends of the first table leg and the second table leg.

Further, the fifth welding part comprises a fifth welding head, a seventh telescopic driving device for driving the fifth welding head to stretch, a fifth lifting driving device for driving the fifth welding head to lift along the joint, and a fifth rotary driving device for driving the fifth welding head to rotate; the sixth welding part comprises a sixth welding head, an eighth telescopic driving device for driving the sixth welding head to stretch, a sixth lifting driving device for driving the sixth welding head to lift along the joint, and a sixth rotary driving device for driving the sixth welding head to rotate.

A full-automatic welding method for steel pipe furniture comprises the following steps:

(1) processing a plurality of triangular steel pipes;

(2) painting the outer surface of the triangular steel pipe;

(3) processing a transmission device;

(4) assembling the triangular steel pipe on a transmission device;

in the step (2), three outer surfaces of the triangular steel pipe are respectively painted;

in step (3), the transmission device comprises a first transmission part and a second transmission part; the first transmission part comprises a plurality of first turning wheels, and the second transmission part comprises a plurality of second turning wheels;

in the step (4), one end of the triangular steel pipe is connected to the first turnover wheel, and the other end of the triangular steel pipe is connected to the second turnover wheel.

Further, in the step (1), a plurality of extrusion devices in the forming mechanism are arranged around the outer circumferential surface of the round long pipe at equal intervals, a plurality of extrusion rollers are gradually and obliquely downwards arranged along the conveying direction of the round long pipe, so that the round long pipe is gradually extruded into the shape of the triangular long pipe in the plurality of extrusion devices, the triangular long pipe is cut through the cutting device, and the triangular long pipe is cut into the triangular steel pipes one by one.

Further, the cut triangular steel pipe is clamped through the clamping device, after a first clamping rod and a second clamping rod of a third clamping part extend into the triangular steel pipe, the first opening and closing driving device drives the first clamping rod and the second clamping rod to be unfolded towards two sides, the triangular steel pipe is fixedly clamped, the first rotating driving device drives the third clamping part to rotate to enable the triangular steel pipe to rotate above the painting device, the third rotating driving device drives three surfaces of the triangular steel pipe to be converted, and the third rotating driving device is matched with the second moving driving device, so that the plurality of painting devices respectively brush the three surfaces of the triangular steel pipe with paints of different colors; the second mobile driving device moves the painted triangular steel pipe to the drying device for drying, and subsequent processes are facilitated.

Further, after the step (2) and before the step (4), the two end faces of the triangular steel pipe are polished through a polishing mechanism, after the triangular steel pipe is fixedly grabbed through the grabbing device, the first polishing portion polishes one end of the triangular steel pipe to enable one end of the triangular steel pipe to be flat, the second polishing portion polishes the other end of the triangular steel pipe to enable the other end of the triangular steel pipe to be flat, and the triangular steel pipe is conveniently assembled on the first turnover wheel and the second turnover wheel subsequently.

Further, after the step (3) and before the step (4), one sides of the first and second support frames are connected to the upper surface of the first table leg, and the other sides of the first and second support frames are connected to the upper surface of the second table leg.

Furthermore, the first table leg is positioned through the second fixing device, the second table leg is positioned through the third fixing device, the first transmission part is placed on one side of the upper surfaces of the first table leg and the second table leg through the first adsorption device, and the second transmission part is placed on the other side of the upper surfaces of the first table leg and the second table leg through the second adsorption device; the first welding device welds the connecting parts of the first transmission part and the first table leg and the second table leg, and welds the connecting parts of the second transmission part and the first table leg and the second table leg to form the table main body.

Further, in the step (4), each triangular steel pipe is connected between the corresponding first overturning wheel and the corresponding second overturning wheel through the second assembling mechanism.

Further, the table main body is placed on the bearing portion, the axes of the first turnover wheel and the second turnover wheel are vertically arranged, the triangular steel pipe is transferred between the first turnover wheel and the second turnover wheel through the transfer device, the triangular steel pipe is welded at the joint of the first turnover wheel and the second turnover wheel through the second welding device, the triangular steel pipe is fixed on the first turnover wheel and the second turnover wheel, the next triangular steel pipe is clamped between the corresponding first turnover wheel and the corresponding second turnover wheel, and the operation is circulated until the triangular steel pipe is welded between all the first turnover wheel and the second turnover wheel.

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

after a round long pipe is gradually extruded into the triangular long pipe through a forming device, the triangular long pipe is cut into equally-divided triangular steel pipes by the cutting device, three surfaces of the triangular steel pipes are painted, two ends of the triangular steel pipes are polished to enable two ends of the triangular steel pipes to be smooth and burr-free, the triangular steel pipes are in the same orientation with the surfaces of the colors and are connected between a first transmission part and a second transmission part of a transmission device, when the first transmission part and the second transmission part are in transmission, a first turnover wheel and a second turnover wheel drive the triangular steel pipes to rotate, the triangular steel pipes are turned over to the surfaces of the other colors and are replaced to be tabletops of different colors, the color is changed after one color is seen for a long time, the color is more interesting, the life pleasure is improved, meanwhile, the production efficiency is improved through high-automation production, and the labor cost is greatly reduced.

The invention also provides a full-automatic welding method for the steel tube furniture, the steel tube table is manufactured by the method, the automation degree is improved, the production efficiency is improved, the precision of each part and the connection precision among the parts are ensured, and the labor cost is reduced; the invention enables the table top to have diversity and interest, and well changes the table top matched with other colors after one color is tired.

Drawings

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

FIG. 2 is a schematic structural view of the molding apparatus of the present invention;

FIG. 3 is a schematic view of the extrusion apparatus of the present invention;

FIG. 4 is a schematic structural diagram of a cutting device according to the present invention;

FIG. 5 is a schematic view of the construction of the painting apparatus and the grinding mechanism of the present invention;

FIG. 6 is a schematic structural view of a second fixing device, a third fixing device, a first adsorption device, a second adsorption device and a first welding device according to the present invention;

fig. 7 is a schematic structural view of a second assembling mechanism of the present invention.

In the figure: 1-triangular steel pipe, 2-first transmission part, 3-second transmission part, 21-first turnover wheel, 31-second turnover wheel, 22-first support frame, 32-second support frame, 4-forming mechanism, 41-forming device, 42-cutting device, 411-extruding device, 4111-extruding roller, 412-third support frame, 43-cutting part, 431-circular saw blade, 432-rotating motor, 433-lifting cylinder, 44-auxiliary device, 45-first fixing device, 46-first clamping part, 47-second clamping part, 461-first clamping block, 462-second clamping block, 471-third clamping block, 472-fourth clamping block, 48-first moving driving device, 481-first connecting block, 482-a first moving cylinder, 483-a relief groove, 484-an auxiliary conveying part, 485-an auxiliary roller, 486-a first limit groove, 49-a first conveying device, 491-a first conveying part, 492-a second conveying part, 4911-a first conveying roller, 4921-a second conveying roller, 5-a painting device, 51-a painting device, 52-a clamping device, 511-a painting part, 5111-a painting brush, 512-a paint accommodating part, 521-a third clamping part, 5211-a first clamping rod, 5212-a first opening and closing driving device, 522-a third rotating driving device, 523-a first rotating driving device, 524-a second moving driving device, 53-a drying device, 54-a polishing mechanism, 55-a grabbing device, 56-a polishing device, 551-gripping part, 5511-first gripping hand, 5512-second gripping hand, 552-second lifting drive, 553-third movement drive, 554-fourth movement drive, 561-first polishing part, 562-second polishing part, 5611-first polishing disk, 5621-second polishing disk, 5612-first telescopic drive, 5622-second telescopic drive, 50-table top support, 501-first table foot, 502-second table foot, 61-second fixing device, 62-third fixing device, 63-first adsorption device, 64-second adsorption device, 65-first welding device, 611-first electromagnetic attraction part, 612-third telescopic drive, 621-second electromagnetic attraction part, 622-fourth telescopic drive, 631-first electromagnetic adsorption section, 632-first moving device, 641-second electromagnetic adsorption section, 642-second moving device, 651-first welding section, 652-second welding section, 6511-first welding head, 6512-fifth movement driving device, 6513-third elevation driving device, 6521-second welding head, 6522-sixth movement driving device, 6523-fourth elevation driving device, 7-second assembling mechanism, 72-bearing section, 71-transferring device, 73-second welding device, 711-transferring table, 712-third adsorption device, 713-first clamping device, 7111-bearing section, 7112-limiting section, 7121-third electromagnetic adsorption section, 7122-third moving device, 714-first clamping section, 7141-first clamping hand, 7142-second gripper, 7143-third opening and closing drive, 715-seventh movement drive, 731-third weld, 732-fourth weld, 721-carrier belt, 74-third weld, 741-fifth weld, 742-sixth weld.

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 7, the full-automatic welding device for steel tube furniture of the present invention comprises a forming mechanism 4 for processing a triangular steel tube 1, a painting device 5 for painting the outer surface of the triangular steel tube 1, a polishing mechanism 54 for polishing both end surfaces of the triangular steel tube 1, a transmission device for changing the color of the triangular steel tube 1, a first assembling mechanism for assembling the transmission device into a table main body, and a second assembling mechanism 7 for connecting the triangular steel tube 1 to the transmission device.

Thus, after the round long pipe is gradually extruded into the triangular long pipe by the forming device 41, the triangular long pipe is cut into equally-divided triangular steel pipes 1 by the cutting device 42, three surfaces of the triangular steel pipes 1 are painted, two ends of the triangular steel pipes 1 are polished to enable two ends of the triangular steel pipes 1 to be smooth and have no burrs, the surfaces with the same color of the triangular steel pipes 1 face towards the same direction and are connected between the first transmission part 2 and the second transmission part 3 of the transmission device, when the first transmission part 2 and the second transmission part 3 are transmitted, the first turnover wheel 21 and the second turnover wheel 31 drive the triangular steel pipes 1 to rotate, so that the triangular steel pipes 1 are turned over to the surfaces with the other color and are changed into table tops with different colors, the color change is carried out after one color matching is seen for a long time, the interesting effect is achieved, the life interest is improved, and the production efficiency is improved through high automatic production, the labor cost is greatly reduced. Specifically, paint with different patterns can be brushed on the three outer surfaces of the triangular steel pipe 1, so that the interestingness is improved.

Preferably, the transmission device comprises a first transmission part 2 and a second transmission part 3 which rotate the triangular steel pipe 1. When the first transmission part 2 and the second transmission part 3 transmit, the first turnover wheel 21 and the second turnover wheel 31 drive the triangular steel tube 1 to rotate, so that the triangular steel tube 1 is turned over to a surface with another color and is replaced by a table top with different colors.

Preferably, the first transmission 2 comprises a plurality of first flipping wheels 21 and the second transmission 3 comprises a plurality of second flipping wheels 31. The first turnover wheel 21 and the second turnover wheel 31 drive the triangular steel tube 1 to rotate, so that the triangular steel tube 1 is turned over to a surface with another color and is replaced by a table top with different colors.

Preferably, in order to facilitate the rotation of the first flipping wheel 21, the first transmission part 2 further comprises a first rotation driving means for driving the plurality of first flipping wheels 21 to rotate.

Preferably, in order to enable the plurality of first turnover wheels 21 to synchronously rotate, a first connecting shaft is formed at one end of each first turnover wheel 21 far away from the triangular steel pipe 1; the first rotary driving device comprises first chains wound around the adjacent first connecting shafts and first chain wheels in matched transmission with the first chains.

Preferably, the second transmission part 3 further comprises a second rotation driving means for driving the plurality of second flipping wheels 31 to rotate. The second turning wheels 31 are driven to rotate by the second rotation driving device and are matched with the first turning wheels 21 to drive the triangular steel pipes 1 to switch different surfaces, so that the table top combined by different colors is formed.

Preferably, in order to enable the plurality of second turnover wheels 31 to synchronously rotate, a second connecting shaft is formed at one end of each second turnover wheel 31 far away from the triangular steel pipe 1; the second rotary driving device comprises second chains wound around the adjacent second connecting shafts and second chain wheels in matched transmission with the second chains.

Preferably, in order to stabilize the structures of the first transmission unit 2 and the second transmission unit 3, the first transmission unit 2 is provided with a first support frame body 22 that supports the plurality of first flipping wheels 21; the second transmission unit 3 is provided with a second support frame 32 that supports the plurality of second flipping wheels 31.

Preferably, the first rotary drive further comprises a first hand wheel; the first hand wheel passes through the first support frame body 22 and is rotatably connected with the first connecting shaft; the second rotary driving device also comprises a second hand wheel; the second hand wheel passes through the second support frame body 32 and is rotatably connected with the second connecting shaft. By rotating the first hand wheel, the first hand wheel drives the first connecting shaft to rotate, and the first connecting shaft drives the first turnover wheel 21 to rotate; by rotating the second hand wheel, the second hand wheel drives the second connecting shaft to rotate, and the second connecting shaft drives the second turnover wheel 31 to rotate.

Preferably, in order to improve the processing efficiency, the forming mechanism 4 includes a forming device 41 for gradually extruding the circular elongated tube into the triangular elongated tube, and a cutting device 42 for cutting the triangular elongated tube into the triangular steel tube 1.

Preferably, in order to improve the processing efficiency, the forming device 41 includes a plurality of pressing devices 411 that press the outer wall of the circular elongated tube.

Preferably, the pressing means 411 includes a plurality of pressing rollers 4111 which press the outer wall of the circular elongated tube. The round elongated tube is gradually extruded into a triangular elongated tube by the extrusion rollers 4111.

Preferably, the plurality of squeeze rollers 4111 have the same diameter, and the squeeze rollers 4111 are gradually inclined downward in the conveying direction of the round elongated tube. The round elongated tube is gradually extruded into a triangular elongated tube by the extrusion rollers 4111.

Preferably, in order to improve the molding efficiency, the axes of the plurality of squeeze rollers 4111 are arranged in parallel, and the plurality of squeeze rollers 4111 are arranged flush in the conveying direction of the round elongated tube.

Preferably, a plurality of pressing means 411 are disposed around the outer circumferential surface of the circular elongated tube at equal intervals. The triangular long pipes extruded are equilateral triangular long pipes by arranging a plurality of extrusion devices 411 at equal intervals.

Preferably, in order to stabilize the structure of the plurality of pressing devices 411, the forming device 41 is provided with a third support frame body 412 that supports the plurality of pressing devices 411.

Preferably, the cutting means 42 comprises a cutting portion 43 for cutting the triangular long tube. The triangular long pipe is cut one by one into equally divided triangular steel pipes 1 by the cutting section 43.

Preferably, in order to improve cutting efficiency, the cutting part 43 includes a circular saw blade 431 and a rotation motor 432 that drives the circular saw blade 431 to rotate; the output of the rotary motor 432 is connected to the circular saw blade 431.

Preferably, in order to improve the cutting efficiency, the cutting part 43 further includes a lifting cylinder 433 driving the disc saw blade 431 to ascend and descend; the output end of the lifting cylinder 433 is connected with the rotating motor 432.

Preferably, in order to guarantee the cutting accuracy, the cutting device 42 further comprises an auxiliary device 44 for assisting the cutting part 43 in cutting.

Preferably, in order to guarantee the cutting accuracy, the auxiliary device 44 comprises a first fixing device 45 for fixing the triangular long tube.

Preferably, in order to ensure the cutting accuracy, the first fixing device 45 includes a first clamping portion 46 and a second clamping portion 47 that clamp the triangular long pipe; the first and second clamping portions 46 and 47 are located at both sides of the circular saw blade 431.

Preferably, the first clamping portion 46 includes a first clamping block 461 and a second clamping block 462; the second clamping portion 47 includes a third clamping block 471 and a fourth clamping block 472. The front end of the triangular long pipe is clamped and fixed by the first clamping block 461 and the second clamping block 462, and the rear end of the triangular long pipe is clamped and fixed by the third clamping block 471 and the fourth clamping block 472, so that the circular saw blade 431 is more stable when the triangular long pipe is cut.

Preferably, in order to improve the stability of the fixing, the first fixing device 45 further includes a first movement driving device 48 for driving the second clamping block 462 to move toward the first clamping block 461, and driving the fourth clamping block 472 to move toward the third clamping block 471.

Preferably, the first movement driving means 48 includes a first connection block 481, and a first movement cylinder 482 which drives the first connection block 481 to move; the second clamping block 462 and the fourth clamping block 472 are coupled to the first coupling block 481, a relief groove 483 is formed on the upper surface of the first coupling block 481, and the output end of the first moving cylinder 482 and the first coupling block 481 are coupled together. The first connecting block 481 is driven by the first moving cylinder 482 to move in the direction of the first clamping block 461 and the third clamping block 471, so that the first clamping block 461, the second clamping block 462, the third clamping block 471 and the fourth clamping block 472 clamp the triangular long pipe, and the relief groove 483 is formed between the second clamping block 462 and the fourth clamping block 472 to avoid interference with the cutting operation of the circular saw blade 431.

Preferably, in order to improve the conveying stability, the auxiliary device 44 further includes an auxiliary conveying portion 484 that assists the conveying of the triangular long tubes.

Preferably, in order to improve the conveying stability, the auxiliary conveyor 484 includes an auxiliary roller 485, and an auxiliary motor that drives the auxiliary roller 485 to rotate; a first limit groove 486 for limiting the triangular long pipe is formed on the circumferential surface of the auxiliary roller 485, and the output end of the auxiliary motor is connected with the auxiliary roller 485.

Preferably, in order to improve the forming efficiency, the forming mechanism 4 further includes a first conveying device 49 that conveys the round long pipe.

Preferably, in order to improve the molding efficiency, the first conveying device 49 includes a first conveying part 491 and a second conveying part 492 which convey the circular long pipe.

Preferably, in order to improve the molding efficiency, the first conveying part 491 includes a first conveying roller 4911, and a first motor for driving the first conveying roller 4911 to rotate; a second limit groove for limiting the circular long pipe is formed on the circumferential surface of the first conveyor roller 4911, and the output end of the first motor is connected to the first conveyor roller 4911.

Preferably, in order to improve the molding efficiency, the second conveying part 492 includes a second conveying roller 4921, and a second motor driving the second conveying roller 4921 to rotate; a third limit groove for limiting the circular long pipe is formed on the circumferential surface of the second conveyor roller 4921, and the output end of the second motor is connected to the second conveyor roller 4921.

Preferably, the painting device 5 comprises a plurality of painting devices 51 for painting different colors on the respective surfaces of the triangular steel pipes 1, and a holding device 52 for holding the triangular steel pipes 1 to be painted on the respective painting devices 51; the plural painting devices 51 are sequentially arranged in the conveying direction of the circular long pipe. The triangular steel pipes 1 are clamped to a plurality of painting devices 51 by a clamping device 52, and painting treatment is sequentially performed on three surfaces.

Preferably, the painting device 51 includes a painting portion 511. The outer surface of the triangular steel pipe 1 is brought into contact with the painting portion 511 to be painted.

Preferably, in order to improve efficiency of painting the outer surface of the triangular steel pipe 1, the painting part 511 includes a plurality of sets of painting brushes 5111.

Preferably, in order to improve the contact surface between the painting brush 5111 and the outer surface of the triangular steel pipe 1, a plurality of groups of painting brushes 5111 are arranged along the length direction of the triangular steel pipe 1. Specifically, the triangular steel pipe 1 forms a projection area in the horizontal direction, and projections of the sets of painting brushes 5111 in the horizontal direction are within the range of the projection area.

Preferably, in order to improve painting efficiency, the painting apparatus 51 further includes a paint accommodating portion 512 for accommodating paint; the paint containing part 512 is provided with a paint containing cavity for containing paint, a first paint opening for the painting part 511 to pass through is formed on the upper surface of the paint containing part 512, the first paint opening is communicated with the paint containing cavity, and the painting part 511 is arranged at the first paint opening.

Preferably, the painting device 51 further includes a first elevation driving device for driving the painting part 511 to ascend and descend; the output end of the first elevation driving means is connected to the painting part 511. The painting part 511 is driven by the first lifting driving device to move downwards to the paint accommodating cavity, and paint is dipped again when the paint color on the painting brush 5111 becomes weak, specifically, the first lifting driving device is driven by an air cylinder.

Preferably, in order to improve painting efficiency, the clamping device 52 includes a third clamping portion 521 for clamping the triangular steel pipe 1.

Preferably, the third clamping part 521 includes a first clamping rod 5211 extending into the triangular steel pipe 1 to contact the inner wall of the triangular steel pipe 1, a second clamping rod, and a first opening/closing driving device 5212 driving the first clamping rod 5211 and the second clamping rod to open and close in the horizontal direction. The first opening and closing driving device 5212 drives the first clamping rod 5211 and the second clamping rod to be closed and then extend into the triangular steel tube 1, and then drives the first clamping rod 5211 and the second clamping rod to be opened to abut against the inner wall, so that the triangular steel tube 1 is fixed; specifically, the first opening and closing driving device 5212 is a bidirectional opening and closing cylinder having a first output end and a second output end, the first clamping rod 5211 is connected to the first output end, and the second clamping rod is connected to the second output end.

Preferably, the gripping device 52 further includes a third rotation driving device 522 for driving the third gripping part 521 to rotate, a first rotation driving device 523 for driving the third gripping part 521 to rotate, and a second movement driving device 524 for moving in the conveying direction of the round elongated pipe; the output end of the third rotation driving means 522 is connected to the third nip 521, the output end of the first rotation driving means 523 is connected to the third rotation driving means 522, and the output end of the second movement driving means 524 is connected to the first rotation driving means 523. The third clamping part 521 is driven to rotate by the third rotation driving device 522, so that the third clamping part 521 drives the triangular steel pipe 1 to rotate along the axis of the triangular steel pipe 1, the three outer surfaces of the triangular steel pipe 1 are respectively painted with paints of different colors, the first rotation driving device 523 drives the third clamping part 521 to drive the triangular steel pipe 1 to move between the cutting device 42 and the painting device 51, and the second movement driving device 524 drives the third clamping part 521 to drive the triangular steel pipe 1 to move to the painting device 51 with the required color and the drying device 53 for drying; specifically, the third rotation driving device 522 and the first rotation driving device 523 are driven by a rotation cylinder, the second movement driving device 524 is a rodless cylinder, and an output end of the rodless cylinder is connected with the first rotation driving device 523.

Preferably, in order to improve the drying efficiency of the paint, the painting apparatus 5 further includes a drying apparatus 53 for drying the painted triangular steel pipe 1.

Preferably, the grinding mechanism 54 includes a gripping device 55 for gripping the triangular steel pipe 1, and a grinding device 56 for grinding both end surfaces of the triangular steel pipe 1. After the triangular steel pipe 1 is fixed by the gripping device 55, the two end faces of the triangular steel pipe 1 are polished by the polishing device 56.

Preferably, in order to improve work efficiency, the grasping apparatus 55 includes a grasping portion 551 that grasps the triangular steel pipe 1.

Preferably, the grip portion 551 includes a first grip hand 5511, a second grip hand 5512, and a second opening/closing driving device that drives the first grip hand 5511 and the second grip hand 5512 to open and close. The first hand 5511 of snatching includes that the first pole and the second of snatching that snatchs triangle-shaped steel pipe 1, and the second is snatched hand 5512 and is included that the third that snatchs triangle-shaped steel pipe 1 snatchs the pole and the fourth snatchs the pole, and the second drive arrangement that opens and shuts includes that the first pole of snatching of drive and second snatchs the first two-way cylinder that opens and shuts of pole to and the drive third snatchs the second two-way cylinder that opens and shuts that pole and fourth snatch the pole and open and shut.

Preferably, the grasping apparatus 55 further includes a second elevation driving means 552 for driving the grasping portion 551 to ascend and descend, a third movement driving means 553 for driving the grasping portion 551 to move in the length direction of the triangular steel pipe 1, and a fourth movement driving means 554 for driving the grasping portion 551 to move in the circular elongated pipe transferring direction. The grabbing part 551 is driven to move downwards by the second lifting driving device 552, so that after the grabbing part 551 grabs the triangular steel pipe 1, the triangular steel pipe 1 is separated from the third clamping part 521 by the third moving driving device 553, and then the triangular steel pipe 1 is moved to the polishing station of the polishing device 56 by the fourth moving driving device 554, the third moving driving device 553 and the second lifting driving device 552, so that the two ends of the triangular steel pipe 1 are polished; specifically, the second lifting driving device 552 includes a first cylinder driving the first gripper 5511 to move downward and a second cylinder driving the second gripper 5512 to move downward, the third movement driving device 553 includes a rodless cylinder, an output end of the rodless cylinder is connected with the first cylinder and the second cylinder, and the fourth movement driving device 554 includes a first guide rail, a second guide rail, a first power cylinder and a second power cylinder; the output ends of the first power cylinder and the second power cylinder are connected with the rodless cylinder, and the rodless cylinder is driven to be connected to the first guide rail and the second guide rail in a sliding mode.

Preferably, in order to improve the grinding efficiency, the grinding device 56 includes a first grinding part 561 that grinds one end of the triangular steel pipe 1, and a second grinding part 562 that grinds the other end of the triangular steel pipe 1.

Preferably, the first sanding portion 561 includes a first sanding disc 5611 and the second sanding portion 562 includes a second sanding disc 5621. One end of the triangular steel pipe 1 is ground through a first grinding disc 5611, and the other end of the triangular steel pipe 1 is ground through a second grinding disc 5621; specifically, the first sanding disc 5611 is driven to rotate by a first power motor, and the second sanding disc 5621 is driven to rotate by a second power motor.

Preferably, the first polishing section 561 further includes a first telescopic driving means 5612 for driving the first polishing disc 5611 to be telescopic in an axial direction thereof, and an output end of the first telescopic driving means 5612 is connected to the first polishing disc 5611; the second dressing section 562 further includes a second telescopic driving means 5622 for driving the second dressing disk 5621 to be contracted and expanded in the axial direction thereof, and an output end of the second telescopic driving means 5622 is connected to the second dressing disk 5621. The first polishing disc 5611 is driven by the first telescopic driving device 5612 to gradually polish the end face of the triangular steel pipe 1, and the second telescopic driving device 5622 drives the second polishing disc 5621 to gradually polish the end face of the triangular steel pipe 1; specifically, the first telescopic driving means 5612 and the second telescopic driving means 5622 are both driven by a cylinder.

Preferably, in order to facilitate the subsequent assembly of the triangular steel pipe 1, the first assembly mechanism includes a second fixing device 61 for positioning the first leg 501, a second fixing device 61 for positioning the second leg 502, a first suction device 63 for placing the first transmission part 2 on one side of the upper surfaces of the first leg 501 and the second leg 502, a second suction device 64 for placing the second transmission part 3 on the other side of the upper surfaces of the first leg 501 and the second leg 502, a first welding device 65 for welding the connection part of the first transmission part 2 with the first leg 501 and the second leg 502 and welding the connection part of the second transmission part 3 with the first leg 501 and the second leg 502.

Preferably, the second fixing device 61 includes a first electromagnetic attraction part 611, and a third telescopic driving device 612 for driving the first electromagnetic attraction part 611 to be telescopic; the third fixing device 62 includes a second electromagnetic attraction portion 621, and a fourth expansion driving device 622 for driving the second electromagnetic attraction portion 621 to expand and contract. The first electromagnetic suction part 611 is used for sucking the first table leg 501, the second electromagnetic suction part 621 is used for sucking the second table leg 502, the third telescopic driving device 612 is used for driving the first electromagnetic suction part 611 to move, and the fourth telescopic driving device 622 is used for driving the second electromagnetic suction part 621 to move, so that the first table leg 501 and the second table leg 502 are aligned; specifically, the first leg 501 and the second leg 502 are both made of materials capable of being electromagnetically adsorbed, and the materials include the first leg 501 and the second leg 502 made of iron.

Preferably, the first adsorption means 63 includes a first electromagnetic adsorption part 631, and a first moving means 632 that drives the first electromagnetic adsorption part 631 to move along a predetermined trajectory; the second adsorption device 64 includes a second electromagnetic adsorption part 641, and a second moving device 642 that drives the second electromagnetic adsorption part 641 to move along a predetermined trajectory. The first moving device 632 drives the first electromagnetic adsorption part 631 to place the first transmission part 2 on one side of the first leg 501 and the second leg 502, and the second moving drive device 524 drives the second electromagnetic adsorption part 641 to place the second transmission part 3 on the other side of the first leg 501 and the second leg 502; specifically, the first moving device 632 includes a first cylinder driving the first electromagnetic absorption part 631 to move up and down, and a second cylinder driving the first electromagnetic absorption part 631 to move along the axis of the first flipping wheel 21, an output end of the first cylinder is connected with the first electromagnetic absorption part 631, and an output end of the second cylinder is connected with the first cylinder; the second moving device 642 comprises a third cylinder driving the second electromagnetic absorption part 641 to move up and down and a fourth cylinder driving the second electromagnetic absorption part 641 to move along the axis of the second turnover wheel 31, wherein the output end of the third cylinder is connected with the second electromagnetic absorption part 641, and the output end of the fourth cylinder is connected with the third cylinder.

Preferably, in order to improve the welding efficiency, the first welding device 65 includes a first welding portion 651 that welds a connection portion between the first transmission unit 2 and one side surface of the first leg 501 and the second leg 502, and a second welding portion 652 that welds a connection portion between the second transmission unit 3 and the other side surface of the first leg 501 and the second leg 502.

Preferably, the first welding part 651 includes a first welding head 6511, a fifth movement driving device 6512 for driving the first welding head 6511 to move in the transmission direction of the first transmission part 2, and a third elevation driving device 6513 for driving the first welding head 6511 to ascend and descend; the second welding part 652 includes a second welding head 6521, a sixth movement driving device 6522 for driving the second welding head 6521 to move in the transmission direction of the second transmission part 3, and a fourth elevation driving device 6523 for driving the second welding head 6521 to ascend and descend. The fifth movement driving device 6512 and the third lifting driving device 6513 are matched to drive the first welding head 6511 to weld along the joint of the first transmission part 2 and the first table leg 501 with the second table leg 502, specifically, the third lifting driving device 6513 is driven by a cylinder, the fifth movement device comprises a first slide rail, a second slide rail, a fifth cylinder and a sixth cylinder, the output ends of the fifth cylinder and the sixth cylinder are connected with the third lifting driving device 6513, and the fifth cylinder and the sixth cylinder drive the third lifting driving device 6513 to move on the first slide rail and the second slide rail; the sixth moving driving device 6522 and the fourth lifting driving device 6523 are matched to drive the second welding head 6521 to weld along the second transmission part 3 and the joint of the first table leg 501 and the second table leg 502, specifically, the fourth lifting driving device 6523 is driven by a cylinder, the sixth moving device comprises a third slide rail, a fourth slide rail, a seventh cylinder and an eighth cylinder, the output ends of the seventh cylinder and the eighth cylinder are connected with the fourth lifting driving device 6523, and the seventh cylinder and the eighth cylinder drive the fourth lifting driving device 6523 to move on the third slide rail and the fourth slide rail. Specifically, in order to better perform the welding operation, the welding device further comprises a first telescopic cylinder for driving the first welding head 6511 and a second telescopic cylinder for driving the second welding head 6521, wherein an output end of the first telescopic cylinder is connected with the first welding head 6511, an output end of the third lifting driving device 6513 is connected with the first telescopic cylinder, an output end of the second telescopic cylinder is connected with the second welding head 6521, and an output end of the fourth lifting driving device 6523 is connected with the second telescopic cylinder.

Preferably, the second assembling mechanism 7 includes a bearing part 72 for bearing the table main body, a transfer device 71 for transferring the triangular steel pipe 1 between the first and

second turnover wheels

21 and 31, and a second welding device 73 for welding the triangular steel pipe 1 to the end surfaces of the first and

second turnover wheels

21 and 31. The table main body is placed on the bearing part 72, the axes of the first turnover wheel 21 and the second turnover wheel 31 are in a vertical state, the transfer device 71 moves the triangular steel pipe 1 between the first turnover wheel 21 and the corresponding second turnover wheel 31, and then the second welding device 73 welds the connection part of the triangular steel pipe 1 and the first turnover wheel 21 and the second turnover wheel 31.

Preferably, in order to improve the working efficiency, the transfer device 71 includes a transfer table 711 for carrying the triangular steel pipe 1, a third suction device 712 for sucking the triangular steel pipe 1 on the transfer table 711, and a first gripping device 713 for gripping the triangular steel pipe 1 sucked by the third suction device 712.

Preferably, the transfer table 711 includes a supporting portion 7111 for supporting the triangular steel tube 1, and a limiting portion 7112 for limiting the triangular steel tube 1; the upper surface of the supporting part 7111 forms a transfer inclined plane which is gradually inclined downwards along the conveying direction of the round long pipe, and the transfer inclined plane is limited and arranged on one side of the transfer inclined plane. The triangular steel tube 1 is placed on the supporting portion 7111 and gradually slides downwards to the limiting portion 7112 from the supporting portion 7111, so that the triangular steel tube 1 can be conveniently adsorbed by the third adsorption device 712. Specifically, the triangular steel pipe 1 is a material capable of being electromagnetically attracted, and the material includes the triangular steel pipe 1 made of iron.

Preferably, the third adsorption device 712 includes a third electromagnetic adsorption part 7121 and a third moving device 7122 for driving the third electromagnetic adsorption part 7121 to move along a predetermined track. Adsorb triangle-shaped steel pipe 1 through third mobile device 7122 drive third electromagnetic absorption portion 7121, specifically, the bottom of third electromagnetic absorption portion 7121 is formed with the shape assorted storage tank with 1 one corner of triangle-shaped steel pipe, cooperate with triangle-shaped steel pipe 1 through this storage tank, it is more stable to make the absorption of third electromagnetic absorption portion 7121 to triangle-shaped steel pipe 1, third mobile device 7122 includes first linking arm, the second linking arm, the third linking arm, the fourth linking arm, fifth linking arm and revolving cylinder, link together through the motor between each adjacent linking arm, revolving cylinder's output and fifth linking arm link together.

Preferably, in order to improve the processing efficiency, the first gripping device 713 includes a first gripping part 714 that grips the triangular steel pipe 1.

Preferably, in order to improve gripping stability, first gripping section 714 includes first gripping hand 7141 and second gripping hand 7142; the first clamping hand 7141 comprises a first clamping plate and a second clamping plate, the second clamping plate is connected to the end face of the first clamping plate, and the second clamping plate and the first clamping plate form a first clamping groove clamped on the outer wall of the triangular steel pipe 1; the triangular steel pipe 1 is provided with a first steel plate, a second steel plate and a third steel plate which are sequentially and adjacently arranged; the angle formed by the second clamping plate and the first clamping plate is equal to the angle formed by the first steel plate and the second steel plate of the triangular steel pipe 1; the second clamping hand 7142 comprises a third clamping plate and a fourth clamping plate, the fourth clamping plate is connected to the end face of the third clamping plate, and the fourth clamping plate and the third clamping plate form a second clamping groove clamped on the outer wall of the triangular steel pipe 1; the angle formed by the third clamping plate and the fourth clamping plate is equal to the angle formed by the first steel plate and the third steel plate of the triangular steel pipe 1.

Preferably, in order to improve clamping efficiency and clamping stability, the first clamping part 714 further includes a third opening and closing driving device 7143 which drives the first clamping hand 7141 and the second clamping hand 7142 to open and close. Specifically, the third opening/closing driving device 7143 includes a bidirectional opening/closing cylinder.

Preferably, the first gripping device 713 further includes a second rotation driving device that drives the first gripping part 714 to rotate, and a seventh movement driving device 715 that drives the first gripping part 714 to move. The seventh movement driving device 715 prevents the first gripping part 714 from interfering with the rotation of the first gripping part 714, by driving the first gripping part 714 to rotate back and forth between the transfer table 711 and the carrying part 72 by the second rotation driving device; specifically, the second rotation driving means includes a rotation cylinder, and the seventh movement driving means 715 includes a rodless cylinder.

Preferably, in order to improve the welding efficiency, the second welding device 73 includes a third welding part 731 welding the contact edge of the triangular steel pipe 1 and the first turnover wheel 21, and a fourth welding part 732 welding the contact edge of the triangular steel pipe 1 and the second turnover wheel 31.

Preferably, the third welding part 731 includes a third welding head, a fifth telescopic driving device driving the third welding head to be telescopic, and a third rotation driving device driving the third welding head to rotate; the fourth welding part 732 includes a fourth welding head, a sixth expansion driving device for expanding and contracting the fourth welding head, and a fourth rotation driving device for rotating the fourth welding head. A third welding head is driven by the cooperation of a third rotary driving device and a fifth telescopic driving device, so that the third welding head can weld the contact edge of the triangular steel pipe 1 and the first turnover wheel 21; a fourth welding head is driven by the fourth rotary driving device and the sixth telescopic driving device in a matching manner, so that the contact edge of the triangular steel pipe 1 and the second turnover wheel 31 is welded by the fourth welding head; specifically, the fifth telescopic driving device, the third rotary driving device, the sixth telescopic driving device and the fourth rotary driving device are all driven by air cylinders.

Preferably, the bearing part 72 includes a bearing conveyor belt 721, and a transmission driving device for driving the bearing conveyor belt 721. The bearing conveyor belt 721 is driven to rotate by the transmission driving device, so that the table main body on the bearing conveyor belt 721 is driven to move, and after one triangular steel pipe 1 is welded, the table main body moves to the welding station of the next first turnover wheel 21 and the next second turnover wheel 31 to weld the next triangular steel pipe 1.

Preferably, in order to improve the structural strength of the table, the second assembling mechanism 7 further includes a third welding device 74 for welding the joints of the first transmission part 2 and the second transmission part 3 with the bottom ends of the first leg 501 and the second leg 502.

Preferably, in order to improve the structural strength of the table, the third welding device 74 includes a fifth welding part 741 that welds the connection between the first transmission part 2 and the bottom ends of the first leg 501 and the second leg 502, and a sixth welding part 742 that welds the connection between the second transmission part 3 and the bottom ends of the first leg 501 and the second leg 502.

Preferably, the fifth welding part 741 includes a fifth welding head, a seventh telescopic driving device for driving the fifth welding head to be telescopic, a fifth lifting driving device for driving the fifth welding head to be lifted along the joint, and a fifth rotation driving device for driving the fifth welding head to rotate; the sixth welding part 742 includes a sixth welding head, an eighth telescopic driving device for driving the sixth welding head to be telescopic, a sixth lifting driving device for driving the sixth welding head to be lifted along the joint, and a sixth rotation driving device for driving the sixth welding head to rotate. A fifth welding head is driven by the cooperation of a seventh telescopic driving device, a fifth lifting driving device and a fifth rotating driving device, so that the fifth welding head welds the connecting part of the first transmission part 2, the first table leg 501 and the second table leg 502 at the bottom end; through eighth flexible drive arrangement, sixth lift drive arrangement and sixth rotary driving device cooperation drive sixth welding head, make the sixth welding head weld the junction that second transmission portion 3 and first table foot 501 and second table foot 502 are in the bottom, make the bulk strength of desk higher, specifically, seventh flexible drive arrangement, fifth lift drive arrangement and fifth rotary driving device to and eighth flexible drive arrangement, sixth lift drive arrangement and sixth rotary driving device are cylinder drive.

(1) processing a plurality of triangular steel pipes 1;

(2) painting the outer surface of the triangular steel pipe 1;

(3) processing a transmission device;

(4) assembling the triangular steel pipe 1 on a transmission device;

in the step (2), three outer surfaces of the triangular steel pipe 1 are respectively painted;

in step (3), the transmission device comprises a first transmission part 2 and a second transmission part 3; the first transmission part 2 comprises a plurality of first turning wheels 21, and the second transmission part 3 comprises a plurality of second turning wheels 31;

in the step (4), one end of the triangular steel pipe 1 is connected to the first turnover wheel 21, and the other end of the triangular steel pipe 1 is connected to the second turnover wheel 31.

Therefore, the steel tube table manufactured by the method has the advantages that the automation degree is improved, the production efficiency is improved, the precision of each part and the connection precision among the parts are ensured, and the labor cost is reduced; the invention enables the table top formed by connecting a plurality of triangular steel tubes 1 to have the effect of changing colors by brushing paints with different colors on three outer surfaces of the triangular steel tubes 1 respectively, and connects each triangular steel tube 1 to the corresponding first turnover wheel 21 and the second turnover wheel 31 respectively, when the first turnover wheel 21 or the second turnover wheel 31 is rotated, the triangular steel tubes 1 rotate along with the rotation of the turnover wheels to rotate to the surfaces with different colors, and the plurality of triangular steel tubes 1 can form the table tops with three different colors, and the table tops with the colors staggered with each other can also be formed by the surfaces of the triangular steel tubes 1 with different colors.

Preferably, in the step (1), the plurality of extrusion devices 411 in the forming mechanism 4 are arranged around the outer circumferential surface of the circular elongated tube at equal intervals, the plurality of extrusion rollers 4111 are arranged gradually inclined downwards along the conveying direction of the circular elongated tube, the circular elongated tube is gradually extruded into the shape of the triangular elongated tube in the plurality of extrusion devices 411, and the triangular elongated tube is cut by the cutting device 42 to be cut into the triangular steel tubes 1 one by one.

Preferably, the cut triangular steel pipe 1 is clamped by the clamping device 52, after the first clamping rod 5211 and the second clamping rod of the third clamping part 521 extend into the triangular steel pipe 1, the first opening and closing driving device 5212 drives the first clamping rod 5211 and the second clamping rod to be spread towards two sides, after the triangular steel pipe 1 is fixed and clamped, the first rotating driving device 523 drives the third clamping part 521 to rotate the triangular steel pipe 1 above the painting device 5, the third rotating driving device 522 drives the triangular steel pipe 1 to convert three surfaces, and is matched with the second moving driving device 524, so that the plurality of painting devices 51 respectively brush the three surfaces of the triangular steel pipe 1 with paints of different colors; the second moving driving device 524 moves the painted triangular steel pipe 1 to the drying device 53 for drying, so as to facilitate the subsequent processes.

Preferably, after the step (2) and before the step (4), the two end surfaces of the triangular steel pipe 1 are polished by the polishing mechanism 54, after the triangular steel pipe 1 is grabbed and fixed by the grabbing device 55, the first polishing part 561 polishes one end of the triangular steel pipe 1 to flatten one end of the triangular steel pipe 1, and the second polishing part 562 polishes the other end of the triangular steel pipe 1 to flatten the other end of the triangular steel pipe 1, so that the triangular steel pipe 1 is assembled on the first overturning wheel 21 and the second overturning wheel 31 in the following process.

Preferably, after the step (3) and before the step (4), one side of the first and second support frames 22 and 32 is attached to the upper surface of the first table foot 501, and the other side of the first and second support frames 22 and 32 is attached to the upper surface of the second table foot 502.

Preferably, the first fixing device 61 is used for positioning the first leg 501, the third fixing device 62 is used for positioning the second leg 502, the first adsorption device 63 is used for placing the first transmission part 2 on one side of the upper surfaces of the first leg 501 and the second leg 502, and the second adsorption device 64 is used for placing the second transmission part 3 on the other side of the upper surfaces of the first leg 501 and the second leg 502; the first welding device 65 welds the connection portions of the first transmission unit 2 and the first leg 501 and the second leg 502, and welds the connection portions of the second transmission unit 3 and the first leg 501 and the second leg 502, thereby forming a table body.

Preferably, in step (4), each triangular steel pipe 1 is connected between the corresponding first and

second turnover wheels

21 and 31 by the second assembling mechanism 7.

Preferably, the table body is placed on the bearing part 72, the axes of the first turnover wheel 21 and the second turnover wheel 31 are vertically arranged, the triangular steel pipe 1 is transferred between the first turnover wheel 21 and the second turnover wheel 31 by the transfer device 71, the joint of the triangular steel pipe 1 and the first turnover wheel 21 and the second turnover wheel 31 is welded by the second welding device 73, the triangular steel pipe 1 is fixed on the first turnover wheel 21 and the second turnover wheel 31, the next triangular steel pipe 1 is clamped between the corresponding first turnover wheel 21 and the corresponding second turnover wheel 31, and the operation is circulated until the triangular steel pipes 1 are welded between all the first turnover wheel 21 and the second turnover wheel 31.

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

1. The utility model provides a steel pipe furniture full-automatic welding set which characterized in that: the device comprises a forming mechanism for processing a triangular steel pipe, a painting device for painting the outer surface of the triangular steel pipe, a polishing mechanism for polishing two end faces of the triangular steel pipe, a transmission device for changing colors of the triangular steel pipe, a first assembling mechanism for assembling the transmission device into a table main body, and a second assembling mechanism for connecting the triangular steel pipe to the transmission device.

2. The full-automatic welding device for the steel tube furniture according to claim 1, characterized in that: the transmission device comprises a first transmission part and a second transmission part which are used for rotating the triangular steel pipe.

3. The full-automatic welding device for the steel tube furniture according to claim 2, characterized in that: the first transmission part comprises a plurality of first overturning wheels, and the second transmission part comprises a plurality of second overturning wheels.

4. The full-automatic welding device for the steel tube furniture according to claim 3, wherein: the first transmission part also comprises a first rotation driving device for driving the plurality of first turnover wheels to rotate.

5. The full-automatic welding device for the steel tube furniture according to claim 4, wherein: a first connecting shaft is formed at one end of the first turnover wheel, which is far away from the triangular steel pipe; the first rotary driving device comprises first chains wound around the adjacent first connecting shafts and first chain wheels in matched transmission with the first chains.

6. The full-automatic welding device for the steel tube furniture according to claim 5, wherein: the second transmission part also comprises a second rotation driving device for driving the plurality of second turnover wheels to rotate.

7. The full-automatic welding device for the steel tube furniture according to claim 6, wherein: a second connecting shaft is formed at one end of the second turnover wheel, which is far away from the triangular steel pipe; the second rotary driving device comprises second chains wound around the adjacent second connecting shafts and second chain wheels in matched transmission with the second chains.

8. The full-automatic welding device for the steel tube furniture according to claim 7, wherein: the first transmission part is provided with a first support frame body for supporting the first turnover wheels; the second transmission part is provided with a second support frame body for supporting the second turnover wheels.

9. The full-automatic welding device for the steel tube furniture according to claim 8, wherein: the first rotary drive device further comprises a first hand wheel; the first hand wheel penetrates through the first support frame body and is rotatably connected with the first connecting shaft; the second rotary driving device also comprises a second hand wheel; the second hand wheel penetrates through the second support frame body and is connected with the second connecting shaft in a rotating mode.

10. The full-automatic welding device for the steel tube furniture according to claim 9, wherein: the forming mechanism comprises a forming device for gradually extruding the round strip pipe into the triangular strip pipe and a cutting device for cutting the triangular strip pipe into the triangular steel pipe.