Welding fixture device matched with welding robot

Abstract

The invention discloses a welding fixture device matched with a welding robot, which specifically comprises a loading and unloading device, an electric control assembly, the welding robot, a positioner and a welding fixture device, the welding clamp device specifically comprises two parts, namely welding clamping left side equipment and welding clamping right side equipment; and the welding clamping left side equipment and the welding clamping right side equipment are mechanically connected. The high-precision and high-stability welding fixture is designed and used for multi-size and multi-combination welding of parts such as pipe fittings, flanges, tee joints and elbows, the welding quality and consistency of products are improved in the welding process, it is guaranteed that the shape, depth, strength and appearance of each weld joint all achieve the ideal effect, the production efficiency is improved, and the cost is reduced; and the product competitiveness is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and specifically relates to a welding fixture device for cooperating with a welding robot. Background Art

[0002] With the rapid development of industrial automation, the requirements for the efficiency, precision, and stability of welding operations are constantly increasing. The traditional manual welding method has become increasingly difficult to meet the welding requirements of large-scale, high-efficiency, and high-quality. The emergence of welding robots has greatly improved the efficiency and quality of welding operations. However, for a welding robot to exert its maximum efficiency, it requires the cooperation of a matching welding fixture device. Many existing welding fixtures can only be applicable to workpieces with specific shapes and sizes when used in cooperation with welding robots, and cannot flexibly adapt to different specifications, with poor versatility. During the welding process, due to factors such as thermal stress and vibration, the workpiece may shift or deform, affecting the welding quality, and the clamping stability is insufficient. In addition, some fixtures have complex structures, are difficult to adjust and maintain, increasing the burden on operators. Summary of the Invention

[0003] To solve the above problems, the present invention provides a welding fixture device for cooperating with a welding robot, including a loading and unloading device, an electric control component, a welding robot, a positioner, and further including a welding fixture device; the loading and unloading device specifically includes two conveyor belts for transferring the components to be welded to the welding fixture device and transferring the welded components out; the electric control component is used to provide power and control for the loading and unloading device, the welding robot, the positioner, and the welding fixture device; the welding robot is used to weld the components to be welded; the positioner is used to place the components to be welded in the welding fixture device and take out the welded components and place them on the loading and unloading device; the welding fixture device is used to fix the components to be welded and assist in welding; the welding fixture device specifically includes two parts: a left-side welding clamping device and a right-side welding clamping device; the left-side welding clamping device and the right-side welding clamping device are mechanically connected.

[0004] Further, the left-side welding clamping device specifically includes: a lifting device, a support column, a rotating support column, a rotating device, a support steel pipe, and an open chuck. There is a cavity in the support column and there are two opposite rectangular openings; the rotating support column is arranged in the cavity of the support column and is used to support and fix the rotating device; the lifting device specifically includes a lifting controller and a lifting column; the lifting controller is arranged at the top of the support column and is fixedly connected to the lower end of the lifting column, and the lifting column is arranged in the internal cavity of the support column; the support steel pipe is fixed on the rotating device by nuts, and multiple open chucks are arranged on the support steel pipe.

[0005] Furthermore, the equipment on the right side of the welding clamping specifically includes: a right-side lifting device, a right-side support column, a right-side rotating device, a right-side support steel pipe, a three-jaw self-centering chuck, a horizontal moving device, and a right-side split chuck; There is a cavity in the right-side support column and two opposite rectangular openings; the right-side rotating support column is arranged in the cavity of the right-side support column and is used to support and fix the right-side rotating device; the right-side lifting device specifically includes a right-side lifting controller and a right-side lifting column; the right-side lifting controller is arranged on the top of the right-side support column and is fixedly connected to the lower end of the right-side lifting column, and the right-side lifting column is arranged in the internal cavity of the right-side support column; the right-side support steel pipe is fixed on the right-side rotating device by a nut, and a plurality of right-side split chucks are arranged on the right-side support steel pipe; the bottom of the right-side support column is connected to the horizontal moving device, and one end of the right-side support steel pipe that is not connected to the right-side rotating device is fixedly connected to a three-jaw self-centering chuck.

[0006] Furthermore, the split chuck and the right-side split chuck are the same device, and the split chuck specifically includes: a servo motor, a precision planetary reducer, a cylindrical gear, a split chuck seat, and a chuck jaw screw; There are groups of the servo motor, the precision planetary reducer, the cylindrical gear, and the chuck jaw screw; the servo motor is arranged above the precision planetary reducer, and the precision planetary reducer is fixed on the split chuck seat through the cylindrical gear; the chuck jaw screw is fixed on the split chuck seat through the cylindrical gear.

[0007] Furthermore, there are openings and split chuck adjustment grooves on both the support steel pipe and the right-side support steel pipe.

[0008] Furthermore, the rotating device and the right-side rotating device are the same device, and the rotating device specifically includes: a rotating servo motor, a hypoid gear reducer, two cylindrical roller bearings, and a main shaft; The main shaft is in a 'T' shape as a whole, is fixed on the rotating support column through the cylindrical roller bearings, the wide surface of the main shaft is fixed to the support steel pipe by a nut, and the other end is electrically connected to the hypoid gear reducer through the cylindrical roller bearings; the rotating servo motor is fixedly arranged above the hypoid gear reducer.

[0009] Furthermore, the horizontal moving device specifically includes: a moving servo motor, a gear rack, a linear slide rail assembly, and a base; the base is in a '□' shape as a whole, and there are two support beams in the middle for supporting the gear rack; the linear slide rail assembly is fixedly installed on the base; the moving servo motor is arranged on the gear rack.

[0010] Furthermore, the moving range of the horizontal moving device is 0 - 250 mm.

[0011] Further, it also includes a display and control terminal, which is installed on the side of the pillar without an opening for displaying the device control situation.

[0012] The present invention provides a welding fixture device for cooperating with a welding robot, which has the following beneficial effects: The present invention designs a high-precision and high-stability welding fixture for multi-size and multi-combination welding of parts such as pipe fittings, flanges, tees, elbows, etc. During the welding process, it improves the welding quality and consistency of products, ensures that the shape, depth, strength, and appearance of each weld seam reach ideal effects, improves production efficiency, reduces costs, and increases product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0014] Figure 1 It is a schematic structural diagram of the device provided by the present invention; Figure 2 It is a schematic structural diagram of the left-side equipment of the welding fixture provided by the present invention; Figure 3 It is a schematic structural diagram of the right-side equipment of the welding fixture provided by the present invention; Figure 4 It is a schematic structural diagram of the opening chuck provided by the present invention; Figure 5 It is a schematic structural diagram of the rotating device provided by the present invention; Figure 6 It is a schematic structural diagram of the horizontal moving device provided by the present invention.

[0015] In the figure, I. Left-side equipment of the welding fixture; II. Right-side equipment of the welding fixture; 1. Lifting device; 2. Pillar; 3. Rotating device; 4. Rotating pillar; 5. Support steel pipe; 6. Opening chuck; 7. Display and control terminal; 8. Right-side lifting device; 9. Right-side pillar; 10. Right-side rotating device; 11. Right-side support steel pipe; 12. Three-jaw self-centering chuck; 13. Horizontal moving device; 14. Right-side opening chuck; 15. Servo motor; 16. Precision planetary reducer; 17. Cylindrical gear; 18. Opening chuck seat; 19. Chuck jaw screw; 20. Rotating servo motor; 21. Hypoid gear reducer; 22. Cylindrical roller bearing; 23. Main shaft; 24. Moving servo motor; 25. Rack and pinion; 26. Linear slide rail assembly; 27. Base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] It should be understood that the specific embodiments described herein are only for explaining the present invention and are not used to limit the present invention.

[0017] The following will describe in detail the implementation method of the present invention with reference to the accompanying drawings. Only some embodiments are described, not all embodiments. For the purpose of clarity, the representations and descriptions unrelated to the present invention are omitted in the drawings and the description.

[0018] In order to have a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the technical solutions of the present invention are described in detail below. Obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments, and should not be construed as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0019] As Figure 1 shown, the present invention provides a welding fixture device for a welding robot, which is used for welding pipe fittings, flanges, tees, elbows, and performs coaxial welding with the welding surface as the end face. Specifically, it includes a loading and unloading device, an electric control component, a welding robot, a positioner, and also includes a welding fixture device; the loading and unloading device specifically includes two conveyor belts, which are used to transfer the components to be welded to the welding fixture device and transfer the welded components out; the electric control component is used to provide power and control for the loading and unloading device, the welding robot, the positioner, and the welding fixture device; the welding robot is used to weld the components to be welded; the positioner is used to place the components to be welded in the welding fixture device and take out the welded components and place them on the loading and unloading device; the welding fixture device is used to fix the components to be welded and assist in welding; the welding fixture device specifically includes two parts: the left welding clamping device I and the right welding clamping device II; the left welding clamping device I and the right welding clamping device II are mechanically connected.

[0020] The welding fixture can complete the welding of pipe fittings with a diameter range of φ21 - φ76mm, a pipe wall thickness range of 4 - 12mm, a pipe length range of 150 - 2500mm, and welding types including pipe fitting + flange, pipe fitting + elbow, single pipe fitting + tee, three pipe fittings + tee, flange + pipe fitting + flange, pipe fitting + elbow + pipe fitting, pipe fitting + elbow + pipe fitting + elbow + pipe fitting (two elbows in the same direction), pipe fitting + elbow + pipe fitting + elbow + pipe fitting (two elbows in opposite directions), pipe fitting + elbow + flange.

[0021] The loading and unloading device is arranged on the left and right sides. One side is for the transmission of materials to be welded, and the other side is for the transmission of welded materials. The operator picks up materials from the loading line and places them on the welding fixture device. The welding rotation speed and the height of the welding fixture can be manually adjusted according to welding requirements. Before welding starts, the welding fixture device can automatically clamp the materials. After welding is completed, the operator removes the welded materials and places them on the unloading line, completing the entire welding process. The loading and unloading device consists of a loading line and an unloading line. The loading line and the unloading line adopt mature products. The tabletop is selected as a flat-type mesh chain with dimensions of: length 9000 mm × width 547 mm × height 300 mm. The length of a single module is 3 meters, and the operating speed is adjustable from 0 to 15 m / s.

[0022] As Figure 2 shown, the equipment I on the left side of the welding fixture specifically includes: a lifting device 1, a pillar 2, a rotating pillar 4, a rotating device 3, a support steel pipe 5, and an open chuck 6; there is a cavity in the pillar 2 and two opposite rectangular openings; the rotating pillar 4 is arranged in the cavity inside the pillar and is used to support and fix the rotating device 3; the lifting device 1 specifically includes a lifting controller and a lifting column; the lifting controller is arranged on the top of the pillar 2 and is fixedly connected to the lower end of the lifting column, and the lifting column is arranged in the internal cavity of the pillar 2; the support steel pipe 5 is fixed on the rotating device 3 by nuts, and multiple open chucks 6 are arranged on the support steel pipe 5.

[0023] As Figure 3 shown, the equipment II on the right side of the welding fixture specifically includes: a right lifting device 8, a right pillar 9, a right rotating device 10, a right support steel pipe 11, a three-jaw self-centering chuck 12, a horizontal moving device 13, and a right open chuck 14; there is a cavity in the right pillar 9 and two opposite rectangular openings; the right rotating pillar is arranged in the cavity inside the right pillar 9 and is used to support and fix the right rotating device 10; the right lifting device 8 specifically includes a right lifting controller and a right lifting column; the right lifting controller is arranged on the top of the right pillar 9 and is fixedly connected to the lower end of the right lifting column, and the right lifting column is arranged in the internal cavity of the right pillar 9; the right support steel pipe 11 is fixed on the right rotating device 10 by nuts, and multiple right open chucks 14 are arranged on the right support steel pipe 11; the bottom of the right pillar 9 is connected to the horizontal moving device 13, and one end of the right support steel pipe 11 that is not connected to the right rotating device 10 is fixedly connected to a three-jaw self-centering chuck 12.

[0024] As Figure 4As shown, the open chuck 6 and the right open chuck 14 are the same device. The open chuck 6 specifically includes: a servo motor 15, a precision planetary reducer 16, a cylindrical gear 17, an open chuck seat 18, and a chuck jaw screw 19. There are 3 sets of the servo motor 15, the precision planetary reducer 16, the cylindrical gear 17, and the chuck jaw screw 19. The servo motor 15 is arranged above the precision planetary reducer 16. The precision planetary reducer 16 is fixed on the open chuck seat 18 through the cylindrical gear 17. The chuck jaw screw 19 is fixed on the open chuck seat 18 through the cylindrical gear 17. The three servo motors 15 are synchronously controlled. The motor output shaft drives the cylindrical gear to move. The extension and retraction of the chuck jaw screw can be controlled by the forward and reverse rotation of the motor. The internal dimension of the open chuck seat is 150 mm in diameter, which can meet the clamping of pipe fittings with a diameter of φ21~φ76 mm.

[0025] There are openings and open chuck adjustment grooves on both the support steel pipe 5 and the right support steel pipe 11. The support steel pipe 5 is in an open form, which is convenient for putting pipe fittings into it. It supports the placement of pipe fittings with a length of 150 mm~2500 mm, provides support for the open chuck 6, and can perform left-right adjustment of the second group of open chucks.

[0026] As Figure 5 As shown, the rotating device 3 and the right rotating device 10 are the same device. The rotating device 3 specifically includes: a rotating servo motor 20, a hypoid gear reducer 21, two cylindrical roller bearings 22, and a main shaft 23. The main shaft 23 is in an overall 'T' shape and is fixed on the rotating support 4 through the cylindrical roller bearings 22. The wide surface of the main shaft 23 is fixedly connected to the support steel pipe 5 through a nut, and the other end is electrically connected to the hypoid gear reducer 21 through the cylindrical roller bearings 22. The rotating servo motor 20 is fixedly arranged above the hypoid gear reducer 21. The rotating device 3 is powered by the rotating servo motor 20, and the output shaft fixedly supports the support steel pipe 5 through a main shaft bolt connection method. The rotation speed is 10 r / min.

[0027] The lifting device is driven by a lifting controller (servo motor) to rotate the lifting screw assembly, and drives the entire device to adjust the height along the linear slide rail assembly at the four corners. The height adjustment range is 800 mm~2500 mm.

[0028] The three-jaw self-centering chuck is used to clamp the flange or elbow fixture, and the operator can adjust the opening and closing of the three jaws through manual operation.

[0029] As Figure 6As shown in the figure, the horizontal moving device 13 specifically includes: a moving servo motor 24, a gear rack 25, a linear slide rail assembly 26, and a base 27; the base 27 is integrally in the shape of a '□', and there are two support beams in the middle for supporting the gear rack 25; the linear slide rail assembly 26 is fixedly installed on the base 27; the moving servo motor 24 is arranged on the gear rack 25; the moving range of the horizontal moving device 13 is 0 - 250 mm. The horizontal moving device 13 is driven by the moving servo motor 24, and through the gear rack transmission, drives the whole device to move horizontally along the linear slide rail assembly, and the horizontal direction can be adjusted from 0 to 250 mm.

[0030] It also includes a display and control terminal 7, and the display and control terminal 7 is installed on the non - opening side of the support column 2 for displaying the equipment control situation.

[0031] The working principle of the welding fixture device provided by the present invention is as follows: Before welding starts, the operator takes materials from the loading line and manually places the two parts to be welded on the left and right opening chucks of the welding fixture device respectively. Along the adjustment groove of the opening chuck, the clamping position of the opening chuck is adjusted. The welding fixture device can automatically clamp the materials. The three servo motors 15 on the opening chuck 6 cooperate with the speed reducer to synchronously control the output shaft of the motor to drive the cylindrical gear to move, and through the forward and reverse rotation of the motor, the extension and retraction of the chuck jaw screw are controlled to realize the clamping of the parts to be welded. After the welding robot finishes welding, the operator takes off the welded parts. The whole welding process is completed. In addition, the three - jaw self - centering chuck is used to clamp the flange or elbow fixture, and the operator can adjust the opening and closing of the three jaws through manual operation.

[0032] The present invention designs a high - precision and high - stability welding fixture, which is used for multi - size and multi - combination welding of parts such as pipe fittings, flanges, tees, elbows, etc. During the welding process, it improves the welding quality and consistency of the products, ensures that the shape, depth, strength, and appearance of each weld seam reach ideal effects, improves production efficiency and reduces costs, and increases the product competitiveness.

[0033] The above - mentioned are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and alterations made by those skilled in the art that do not depart from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A welding fixture device for a welding robot, comprising a loading and unloading device, an electric control component, a welding robot, and a positioner, characterized in that, It further includes a welding fixture device; The loading and unloading device specifically includes two conveyor belts, which are used to transfer the components to be welded to the welding fixture device and convey the welded components out; The electronic control component is used to provide power and control for the loading and unloading device, the welding robot, the positioner, and the welding fixture device; The welding robot is used to weld the components to be welded; The positioner is used to place the components to be welded in the welding fixture device and take out the welded components and place them on the loading and unloading device; The welding fixture device is used to fix the components to be welded and assist in welding; The welding fixture device specifically includes two parts: the left welding clamping device (I) and the right welding clamping device (II); the left welding clamping device (I) is mechanically connected to the right welding clamping device (II).

2. The welding fixture device for cooperating with a welding robot according to claim 1, characterized in that, The left welding clamping device (I) specifically includes: a lifting device (1), a pillar (2), a rotating pillar (4), a rotating device (3), a support steel pipe (5), and an open chuck (6); There is a cavity in the pillar (2) and there are two opposite rectangular openings; the rotating pillar (4) is arranged in the cavity in the pillar and is used to support and fix the rotating device (3); the lifting device (1) specifically includes a lifting controller and a lifting column; the lifting controller is arranged on the top of the pillar (2) and is fixedly connected to the lower end of the lifting column, and the lifting column is arranged in the internal cavity of the pillar (2); the support steel pipe (5) is fixed on the rotating device (3) by nuts, and a plurality of open chucks (6) are arranged on the support steel pipe (5).

3. The welding fixture device for cooperating with a welding robot according to claim 2, wherein, The right welding clamping device (II) specifically includes: a right lifting device (8), a right pillar (9), a right rotating device (10), a right support steel pipe (11), a three-jaw self-centering chuck (12), a horizontal moving device (13), and a right open chuck (14); There is a cavity in the right pillar (9) and there are two opposite rectangular openings; the right rotating pillar is arranged in the cavity in the right pillar (9) and is used to support and fix the right rotating device (10); the right lifting device (8) specifically includes a right lifting controller and a right lifting column; the right lifting controller is arranged on the top of the right pillar (9) and is fixedly connected to the lower end of the right lifting column, and the right lifting column is arranged in the internal cavity of the right pillar (9); the right support steel pipe (11) is fixed on the right rotating device (10) by nuts, and a plurality of right open chucks (14) are arranged on the right support steel pipe (11); the bottom of the right pillar (9) is connected to the horizontal moving device (13), and one end of the right support steel pipe (11) not connected to the right rotating device (10) is fixedly connected to a three-jaw self-centering chuck (12).

4. The welding fixture device for cooperating with a welding robot according to claim 2 or 3, characterized in that, The open chuck (6) and the right open chuck (14) are the same device, and the open chuck (6) specifically includes: a servo motor (15), a precision planetary reducer (16), a cylindrical gear (17), an open chuck seat (18), and a chuck jaw screw (19); There are 3 sets of the servo motor (15), precision planetary reducer (16), cylindrical gear (17), and chuck jaw screw (19); the servo motor (15) is arranged above the precision planetary reducer (16), and the precision planetary reducer (16) is fixed on the open chuck seat (18) through the cylindrical gear (17); the chuck jaw screw (19) is fixed on the open chuck seat (18) through the cylindrical gear (17).

5. The welding fixture device for cooperating with a welding robot according to claim 2 or 3, characterized in that, There are openings and open chuck adjustment grooves on both the support steel pipe (5) and the right support steel pipe (11).

6. The welding jig device for cooperating with a welding robot according to claim 2 or 3, characterized in that, The rotating device (3) and the right rotating device (10) are the same device. The rotating device (3) specifically includes: a rotating servo motor (20), a hypoid gear reducer (21), two cylindrical roller bearings (22), and a main shaft (23). The main shaft (23) is integrally in a 'T' shape and is fixed on the rotating support column (4) through the cylindrical roller bearings (22). The wide surface of the main shaft (23) is fixedly connected to the support steel pipe (5) through a nut, and the other end is electrically connected to the hypoid gear reducer (21) through the cylindrical roller bearings (22); the rotating servo motor (20) is fixedly arranged above the hypoid gear reducer (21).

7. The welding fixture device for cooperating with a welding robot according to claim 3, characterized in that, The horizontal moving device (13) specifically includes: a moving servo motor (24), a gear rack (25), a linear slide rail assembly (26), and a base (27); the base (27) is integrally in a '□' shape, and there are two support beams in the middle for supporting the gear rack (25); the linear slide rail assembly (26) is fixedly installed on the base (27); the moving servo motor (24) is arranged on the gear rack (25).

8. The welding fixture device for cooperating with a welding robot according to claim 7, characterized in that, The moving range of the horizontal moving device (13) is 0 - 250 mm.

9. The welding fixture device for cooperating with a welding robot according to claim 2, characterized in that, It further includes a display and control terminal (7), and the display and control terminal (7) is installed on the non - opening side of the support column (2) for displaying the equipment control situation.

Images