CN111805123B

CN111805123B - Gantry welding machine

Info

Publication number: CN111805123B
Application number: CN202010585259.2A
Authority: CN
Inventors: 欧盟; 王景浩
Original assignee: Wenling Electric Welding Equipment Factory
Current assignee: Zhejiang tedela Welding Technology Co.,Ltd.
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2022-01-04
Anticipated expiration: 2040-06-23
Also published as: CN111805123A

Abstract

The invention belongs to the technical field of gantry welding machines, and particularly relates to a gantry welding machine which comprises a transverse guide rail, a transverse guide rail frame, a supporting plate, a travelling crane and a horizontal guide rail, wherein a connecting block is fixed on the transverse guide rail frame, a driving motor is arranged on one side, away from the transverse guide rail frame, of the connecting block, a circular ring is movably arranged at the bottom of the connecting block, a gear is fixed at an output shaft end of the driving motor, the gear is meshed with an outer ring of the circular ring, the driving motor is used for driving the circular ring to rotate, a guide roller is arranged between the circular ring and the connecting block, the guide roller is used for reducing friction between the circular ring and the connecting block, and a welding module is arranged on the circular ring; the position between the butt joint and the workpiece is controlled by the cooperation of the infrared sensor and the push rod motor, so that the welding machine can weld irregular-shaped circular seams, and the application range of the welding machine is further enlarged.

Description

Gantry welding machine

Technical Field

The invention belongs to the technical field of gantry welding machines, and particularly relates to a gantry welding machine.

Background

The gantry welding manipulator is divided into two types of a bridge type and a portal type, the bridge type welding manipulator consists of a beam and two trolleys which are supported and run, a welding head can transversely move along the beam, and the trolleys can longitudinally move along a track. The gantry welding manipulator is provided with one more gantry than the bridge type gantry, the welding head can move transversely on a gantry beam, or move transversely on a beam which is additionally arranged and can lift up and down along a gantry column, and the beam can be used for welding structures with different heights. The bridge type welding manipulator is suitable for splicing large-area flat plates or welding ship plate frame structures. The gantry type welding manipulator is mainly used for welding the outer longitudinal seam and the annular seam of the cylindrical workpiece in the manufacturing process of the pressure container.

The invention also discloses technical schemes related to gantry welding machines in the prior art, for example, a Chinese patent with application number 2012102754945 discloses a gantry type program control circumferential weld welding machine which comprises an automatic control system, a transmission system, a jacking mechanism and a welding gun motion control mechanism, wherein the automatic control system consists of a PLC (programmable logic controller) and a touch screen; in the jacking mechanism, a single-out rod of the air cylinder is adopted to push the jacking rod to flexibly compress a welding part, so that the anti-loosening purpose is achieved; in the longitudinal lifting device, a stepping motor drives a ball screw to rotate, so that the rigid precision in the lifting of the longitudinal guide rail frame is realized; in the swinging device, the stepping motor drives the swinging screw rod to rotate forward and backward to realize the reciprocating swinging of the connecting frame, and the swinging amplitude is set by a program, so that the technical defects of the existing gantry type program control circular seam welding machine are solved, but the invention can not perform circular seam welding on workpieces except for cylindrical workpieces and can only weld plane circular seams, thereby limiting the application range of the welding machine.

Therefore, the invention provides the gantry welding machine, the position between the butt joint and the workpiece is controlled through the cooperation of the infrared sensor and the push rod motor, so that the gantry welding machine can weld the circular seam with an irregular shape, and the application range of the welding machine is further enlarged.

Disclosure of Invention

In order to make up for the defects of the prior art, the gantry welding machine provided by the invention controls the position between the butt joint and the workpiece through the matching of the infrared sensor and the push rod motor, so that the gantry welding machine can weld the annular seam with an irregular shape, and further the application range of the welding machine is enlarged.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a gantry welding machine, which comprises a transverse guide rail, a transverse guide rail frame, a supporting plate, a traveling crane and a horizontal guide rail, wherein a connecting block is fixed on the transverse guide rail frame, a driving motor is arranged on one side of the connecting block, which is far away from the transverse guide rail frame, a circular ring is movably arranged at the bottom of the connecting block, a gear is fixed at the output shaft end of the driving motor, the gear is meshed with the outer ring of the circular ring, the driving motor is used for driving the circular ring to rotate, a guide roller is arranged between the circular ring and the connecting block, the guide roller is used for reducing friction between the circular ring and the connecting block, a welding module is arranged on the circular ring, the welding module comprises a push rod motor, a welding head is fixed at the output shaft end of the push rod motor, an infrared sensor is arranged on the circular ring, the infrared sensor is used for measuring the distance between a workpiece and the welding head, and a controller is arranged on the transverse guide rail, the controller is used for controlling the welding machine to work; when the welding machine works, the existing welding machine can not perform girth welding on workpieces except for cylindrical workpieces and can only weld plane girth, so that the application range of the welding machine is limited, and the problem is improved; by arranging the circular ring, the two ends of the workpiece are fixed after the workpiece is placed in the circular ring, so that the workpiece is positioned in the center of the circular ring; when welding is carried out, the driving motor drives the gear to rotate under the control of the controller, so that the circular rings synchronously rotate, and the welding modules on the circular rings synchronously rotate; the infrared sensor in the welding module measures the distance between the workpiece and the workpiece in the rotating process and transmits the obtained data to the controller, and the controller analyzes the data sent by the infrared sensor and sends a corresponding command to the push rod motor, so that the push rod motor makes a corresponding change; the distance between the welding head and the surface of the workpiece is changed in the process of stretching the output shaft end of the push rod motor, so that the welding head can reasonably weld the workpiece; according to the invention, the position between the butt joint and the workpiece is controlled by matching the infrared sensor and the push rod motor, so that the welding machine can weld irregular-shaped circular seams, and the application range of the welding machine is further enlarged; when the welding head is welded, the welding head can weld the circular seams which are not on the same plane and the three-dimensional circular seams on the workpiece by matching with the movement of the travelling crane, so that the application range of the welding head is further expanded.

Preferably, a support is fixed at an output shaft end of the push rod motor, two idler wheels are rotatably mounted at one end, far away from the push rod motor, of the support, a first belt wheel is fixed at one side, close to each other, of each idler wheel, two fixing plates are fixed on the support, a connecting rod is rotatably mounted between the two fixing plates, a steel wire brush roller is fixed on the surface of the connecting rod, two second belt wheels are fixed on the surface of the connecting rod, and a belt is movably connected between each first belt wheel and the adjacent second belt wheel; during working, the problems of corrosion and the like at the welding seam can affect the welding, thereby affecting the welding quality; the roller is attached to the surface of a workpiece before welding by arranging the roller, and meanwhile, the driving motor drives the ring to rotate so that the roller rolls on the surface of the workpiece; the rolling roller drives the steel wire brush roll to rotate through a belt, so that the steel wire brush roll processes the welding seam of the workpiece; the cleaning degree of the welding seam of the workpiece is improved through the arrangement of the steel wire brush roller, so that the welding quality is improved.

Preferably, a telescopic rod is arranged between the support and the circular ring, an air storage container is arranged on the support, an air pipe is connected between the telescopic rod and the air storage container, a one-way valve is arranged on the side wall of the telescopic rod, a one-way valve is arranged in the middle of the air pipe, a spray head is fixed at the output shaft end of the push rod motor, a hose is connected between the spray head and the air storage container, and the spray head is used for blowing away dust at a welding seam; when the device works, the welding seam cleaned by the steel wire brush roller still has less dust and rust, so that the quality problem is brought to welding; the telescopic rod is driven to stretch in the process of stretching the output shaft of the push rod motor through the telescopic rod, so that gas is continuously output from the inner cavity of the telescopic rod; the gas that the telescopic link output enters into gas storage container in making the gas quantity in the gas storage container increase, gas in the gas storage container removes shower nozzle department from the hose and spouts for dust and the rust of welding seam department are blown away, thereby have improved the clean degree of welding seam department, to the work piece that the thickness is thinner, its welding quality obtains great improvement.

Preferably, the diameter of the first belt wheel is larger than that of the second belt wheel, an outer cover is sleeved on the outer ring of the roller, the outer cover is filled with air, and more than two limiting springs are arranged between the outer cover and the roller at equal intervals along the circumferential direction of the outer cover; when the roller type cleaning device works, the diameter of the first belt wheel is larger than that of the second belt wheel, so that the roller drives the steel wire brush roller to rotate rapidly in the rotating process, and the cleaning effect of the steel wire brush roller on a workpiece is improved; because of the appearance of work piece is unnecessary, the distance between gyro wheel and the work piece surface is inconsistent, makes the distance between gyro wheel and the work piece obtain the buffering through being provided with the cover tire, avoids leading to the gyro wheel to warp the problem emergence because of the change of work piece surface shape, simultaneously, makes closely laminating between cover tire and the work piece under spacing spring's effect, has guaranteed the roll of gyro wheel at the work piece surface to the continuous rotation of steel wire brush roller has been guaranteed.

Preferably, the head of the spray head faces to the position between the steel wire brush roller and the welding head, the spray head is installed in an inclined mode, and gas sprayed by the spray head is far away from the welding head; when the welding head works, if the nozzle blows foreign matters at a welding seam to the welding head, the welding seam is easy to have flaws, so that the welding quality is influenced; the spray head is arranged in an inclined mode, an included angle is formed between the outlet direction of the spray head and the surface of a workpiece, so that the spray head blows rust at a welding seam to a position far away from the welding point, the probability of contact of foreign matters and the welding head is reduced, and the welding quality is effectively improved.

Preferably, the steel wire brush roller comprises a steel wire and a roller, more than two magnetic blocks are fixed at the root of the steel wire at equal intervals along the circumferential direction of the roller, the magnetic blocks are used for enabling the steel wire to generate magnetism, and the steel wire is bent; when the brush roll works, a large amount of powder dust is generated in the process of cleaning a workpiece by the steel wire brush roll, so that a large amount of pollution is brought to a workshop, and potential safety hazards are brought to workers; the magnetic block is arranged at the root of the steel wire, so that the steel wire has magnetism, and powdered iron rust and oxides are absorbed in the process of cleaning the welding seam by the steel wire, so that the probability of powder diffusing into the air is reduced; the powder on the steel wire is difficult to move due to the bent steel wire, so that the powder retention efficiency is improved, and the amount of powder foreign matters in the air is effectively reduced.

The invention has the following beneficial effects:

1. according to the gantry welding machine, the position between the butt joint and the workpiece is controlled through the cooperation of the infrared sensor and the push rod motor, so that the gantry welding machine can weld irregular-shaped circular seams, and the application range of the welding machine is further enlarged.

2. According to the gantry welding machine, the welding seams are cleaned through the steel wire brush roller and the spray head, so that the welding seams are kept in a clean state, and the welding quality is guaranteed.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the working state of the present invention;

FIG. 4 is a schematic view showing the positional relationship between the first pulley and the second pulley;

FIG. 5 is a schematic view showing the positional relationship between the gear and the ring;

in the figure: the device comprises a transverse guide rail 1, a transverse guide rail frame 2, a support plate 3, a travelling crane 4, a horizontal guide rail 5, a connecting block 6, a driving motor 7, a circular ring 8, a gear 9, a push rod motor 10, a welding head 11, an infrared sensor 12, a support 13, a roller 14, a first belt wheel 15, a fixing plate 16, a connecting rod 17, a steel wire brush roller 18, a second belt wheel 19, a belt 20, an expansion rod 21, an air storage container 22 and a spray head 23.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the gantry welding machine according to the present invention includes a transverse guide rail 1, a transverse guide rail frame 2, a support plate 3, a traveling crane 4, and a horizontal guide rail 5, wherein a connection block 6 is fixed on the transverse guide rail frame 2, a driving motor 7 is disposed on one side of the connection block 6 away from the transverse guide rail frame 2, a circular ring 8 is movably mounted at the bottom of the connection block 6, a gear 9 is fixed at an output shaft end of the driving motor 7, the gear 9 is engaged with an outer ring of the circular ring 8, the driving motor 7 is used for driving the circular ring 8 to rotate, a guide roller is disposed between the circular ring 8 and the connection block 6, the guide roller is used for reducing friction between the circular ring 8 and the connection block 6, a welding module is disposed on the circular ring 8, the welding module includes a push rod motor 10, a welding head 11 is fixed at the output shaft end of the push rod motor 10, and an infrared sensor 12 is disposed on the circular ring 8, the infrared sensor 12 is used for measuring the distance between a workpiece and the welding head 11, and the transverse guide rail 1 is provided with a controller which is used for controlling the welding machine to work; when the welding machine works, the existing welding machine can not perform girth welding on workpieces except for cylindrical workpieces and can only weld plane girth, so that the application range of the welding machine is limited, and the problem is improved; by arranging the circular ring 8, the two ends of the workpiece are fixed after the workpiece is placed in the circular ring 8, so that the workpiece is positioned at the center of the circular ring 8; when welding, the driving motor 7 drives the gear 9 to rotate under the control of the controller, so that the circular ring 8 synchronously rotates, and the welding modules on the circular ring 8 synchronously rotate; the infrared sensor in the welding module measures the distance between the workpiece and the workpiece in the rotating process and transmits the obtained data to the controller, and the controller analyzes the data sent by the infrared sensor and sends a corresponding command to the push rod motor 10, so that the push rod motor 10 makes a corresponding change; the distance between the welding head 11 and the surface of the workpiece is changed in the process of extending and retracting the output shaft end of the push rod motor 10, so that the welding head 11 can reasonably weld the workpiece; according to the invention, the position between the butt joint 11 and the workpiece is controlled by matching the infrared sensor and the push rod motor 10, so that the welding machine can weld the annular seam with an irregular shape, and the application range of the welding machine is further enlarged; when the welding head 11 is welded, the welding head 11 can weld the circular seams which are not on the same plane and the three-dimensional circular seams on the workpiece by matching with the movement of the travelling crane 4, so that the application range of the invention is further expanded.

As a specific embodiment of the invention, a bracket 13 is fixed at an output shaft end of the push rod motor 10, two rollers 14 are rotatably mounted at one end of the bracket 13 far away from the push rod motor 10, a first belt wheel 15 is fixed at one side of each roller 14 close to each other, two fixing plates 16 are fixed on the bracket 13, a connecting rod 17 is rotatably mounted between the two fixing plates 16, a steel wire brush roller 18 is fixed on the surface of the connecting rod 17, two second belt wheels 19 are fixed on the surface of the connecting rod 17, and a belt 20 is movably connected between the first belt wheel 15 and the adjacent second belt wheel 19; during working, the problems of corrosion and the like at the welding seam can affect the welding, thereby affecting the welding quality; by arranging the roller 14, the roller 14 is attached to the surface of a workpiece before welding, and meanwhile, the driving motor 7 drives the circular ring 8 to rotate, so that the roller 14 rolls on the surface of the workpiece; the rolling roller 14 drives the steel wire brush roller 18 to rotate through a belt 20, so that the steel wire brush roller 18 treats the welding seam of the workpiece; the cleaning degree of the welding seam of the workpiece is improved through the arrangement of the wire brush roll 18, so that the welding quality is improved.

As a specific embodiment of the present invention, an expansion link 21 is disposed between the bracket 13 and the ring 8, an air storage container 22 is disposed on the bracket 13, an air pipe is connected between the expansion link 21 and the air storage container 22, a one-way valve is disposed on a side wall of the expansion link 21, a one-way valve is disposed in a middle portion of the air pipe, a nozzle 23 is fixed to an output shaft end of the push rod motor 10, a hose is connected between the nozzle 23 and the air storage container 22, and the nozzle 23 is used for blowing off dust at a welding seam; during working, the welding seam cleaned by the steel wire brush roller 18 still has less dust and rust, so that quality problems are brought to welding; by arranging the telescopic rod 21, the telescopic rod 21 is driven to stretch in the process of stretching the output shaft of the push rod motor 10, so that gas is continuously output from the inner cavity of the telescopic rod 21; the gas output by the telescopic rod 21 enters the gas storage container 22, so that the gas quantity in the gas storage container 22 is increased, the gas in the gas storage container 22 moves from the hose to the spray head 23 to be sprayed out, and the dust and the rust at the welding seam are blown away, so that the cleaning degree of the welding seam is improved, and the welding quality of the workpiece with a thin thickness is greatly improved.

As a specific embodiment of the present invention, the diameter of the first belt wheel 15 is greater than the diameter of the second belt wheel 19, the outer ring of the roller 14 is sleeved with an outer cover, the outer cover is filled with air, and more than two limit springs are arranged between the outer cover and the roller 14 at equal intervals along the circumferential direction; when the cleaning device works, the diameter of the first belt wheel 15 is larger than that of the second belt wheel 19, so that the roller 14 drives the steel wire brush roller 18 to rotate rapidly in the rotating process, and the cleaning effect of the steel wire brush roller 18 on a workpiece is improved; because of the appearance of work piece need not, the distance between gyro wheel 14 and the work piece surface is inconsistent, makes the distance between gyro wheel 14 and the work piece obtain the buffering through being provided with the cover tire, avoids leading to the gyro wheel 14 to warp the problem emergence because of the change of work piece surface shape, simultaneously, makes closely laminating between cover tire and the work piece under spacing spring's effect, has guaranteed the roll of gyro wheel 14 on the work piece surface to the continuous rotation of wire brush roll 18 has been guaranteed.

As a specific embodiment of the present invention, the head of the spray head 23 faces between the wire brush roll 18 and the welding head 11, the spray head 23 is installed obliquely, and the gas sprayed from the spray head 23 is far away from the welding head 11; when the welding head works, if the nozzle 23 blows foreign matters at the welding seam to the welding head 11, the welding seam is easy to be flawed, and the welding quality is influenced; the spray head 23 is obliquely arranged, and an included angle is formed between the outlet direction of the spray head 23 and the surface of a workpiece, so that the spray head 23 blows rust at a welding seam to a position far away from the welding point, the probability of contact of foreign matters and the welding head 11 is reduced, and the welding quality is effectively improved.

As a specific embodiment of the present invention, the steel wire brush roll 18 includes a steel wire and a roller, wherein two or more magnetic blocks are fixed at equal intervals on the root of the steel wire along the circumferential direction of the roller, the magnetic blocks are used for making the steel wire generate magnetism, and the steel wire is bent; when the cleaning device works, a large amount of powder dust is generated in the process of cleaning the workpiece by the steel wire brush roller 18, so that a large amount of pollution is brought to a workshop, and potential safety hazards are brought to workers; the magnetic block is arranged at the root of the steel wire, so that the steel wire has magnetism, and powdered iron rust and oxides are absorbed in the process of cleaning the welding seam by the steel wire, so that the probability of powder diffusing into the air is reduced; the powder on the steel wire is difficult to move due to the bent steel wire, so that the powder retention efficiency is improved, and the amount of powder foreign matters in the air is effectively reduced.

When the welding machine works, the existing welding machine can not perform girth welding on workpieces except for cylindrical workpieces and can only weld plane girth, so that the application range of the welding machine is limited, and the problem is improved; by arranging the circular ring 8, the two ends of the workpiece are fixed after the workpiece is placed in the circular ring 8, so that the workpiece is positioned at the center of the circular ring 8; when welding, the driving motor 7 drives the gear 9 to rotate under the control of the controller, so that the circular ring 8 synchronously rotates, and the welding modules on the circular ring 8 synchronously rotate; the infrared sensor in the welding module measures the distance between the workpiece and the workpiece in the rotating process and transmits the obtained data to the controller, and the controller analyzes the data sent by the infrared sensor and sends a corresponding command to the push rod motor 10, so that the push rod motor 10 makes a corresponding change; the distance between the welding head 11 and the surface of the workpiece is changed in the process of extending and retracting the output shaft end of the push rod motor 10, so that the welding head 11 can reasonably weld the workpiece; according to the invention, the position between the butt joint 11 and the workpiece is controlled by matching the infrared sensor and the push rod motor 10, so that the welding machine can weld the annular seam with an irregular shape, and the application range of the welding machine is further enlarged; when the welding head 11 is welded, the welding head 11 can weld the circular seams which are not on the same plane and the three-dimensional circular seams on the workpiece by matching with the movement of the travelling crane 4, so that the application range of the invention is further expanded.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a gantry welding machine, includes transverse guide (1), transverse guide frame (2), backup pad (3), driving (4), horizontal rail (5), its characterized in that: be fixed with connecting block (6) on transverse guide frame (2), one side that transverse guide frame (2) was kept away from in connecting block (6) is equipped with driving motor (7), connecting block (6) bottom movable mounting has ring (8), the output shaft end of driving motor (7) is fixed with gear (9), gear (9) and ring (8) outer lane intermeshing, driving motor (7) are used for driving ring (8) to rotate, be equipped with the deflector roll between ring (8) and connecting block (6), the deflector roll is used for reducing the friction between ring (8) and connecting block (6), be equipped with welding module on ring (8), welding module includes push rod motor (10), the output shaft end of push rod motor (10) is fixed with soldered connection (11), be equipped with infrared ray sensor (12) on ring (8), the infrared sensor (12) is used for measuring the distance between a workpiece and the welding head (11), and the transverse guide rail (1) is provided with a controller which is used for controlling the welding machine to work;

the output shaft end of push rod motor (10) is fixed with support (13), the one end that push rod motor (10) was kept away from in support (13) is rotated and is installed two gyro wheels (14), two one side that gyro wheel (14) were close to each other all is fixed with band pulley (15) No. one, be fixed with two fixed plates (16) on support (13), two rotate between fixed plate (16) and install connecting rod (17), connecting rod (17) fixed surface has steel wire brush roller (18), connecting rod (17) fixed surface has two band pulleys (19) No. two, swing joint has belt (20) between band pulley (15) and the adjacent band pulley (19).

2. A gantry welding machine according to claim 1, characterized in that: be equipped with telescopic link (21) between support (13) and ring (8), be equipped with gas storage container (22) on support (13), be connected with the trachea between telescopic link (21) and gas storage container (22), telescopic link (21) lateral wall is equipped with the check valve, the trachea middle part is equipped with the check valve, the output shaft end of push rod motor (10) is fixed with shower nozzle (23), be connected with the hose between shower nozzle (23) and gas storage container (22), shower nozzle (23) are used for blowing away the dust of welding seam department.

3. A gantry welding machine according to claim 1, characterized in that: the diameter of the first belt wheel (15) is larger than that of the second belt wheel (19), the outer ring of the roller (14) is sleeved with an outer cover which is filled with air, and more than two limiting springs are arranged between the outer cover and the roller (14) at equal intervals along the circumferential direction of the outer cover.

4. A gantry welding machine according to claim 2, characterized in that: the head of the spray head (23) faces to the position between the steel wire brush roller (18) and the welding head (11), the spray head (23) is obliquely arranged, and gas sprayed by the spray head (23) is far away from the welding head (11).

5. A gantry welding machine according to claim 4, characterized in that: the steel wire brush roller (18) comprises a steel wire and a roller, wherein more than two magnetic blocks are fixed at the root of the steel wire at equal intervals along the circumferential direction of the roller, the magnetic blocks are used for enabling the steel wire to generate magnetism, and the steel wire is bent.