Seamless welding device for conical part

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to a conical part seamless welding device which comprises a moving support, the moving support is transversely installed on a base in a sliding mode, a moving mechanism used for driving the moving support to transversely move is further installed on the base, and an auxiliary support is installed on the moving support; the rotating motor is fixedly mounted on the movable bracket; the fixing mechanism is used for fixing the workpiece and enabling the upper contour line of the workpiece to be in a horizontal state; the pressing mechanism is used for extruding the conical part on the workpiece; a welding gun; the controller is in signal connection with the moving mechanism, the rotating motor and the welding gun and used for driving the moving support to transversely move according to the projection size of the lower end face of the conical part on the horizontal plane in the working process of the welding gun. The invention aims to solve the problem that a conventional rotary welding device cannot be used for well welding a joint when a conical part cannot be welded on the side wall of a conical body due to the structural defects of the conventional welding device.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a seamless welding device for conical parts. Background Art

[0002] When it is necessary to weld a conical part to the side wall of a conical body, in order to ensure sufficient welding strength between the two, it is generally required that the bottom surface of the conical part completely fits the side wall of the conical body. Therefore, it is necessary to cut the lower end surface of the conical part horizontally to form an arc that fits the side of the conical body, thereby forming a joint for welding between the conical body and the conical part.

[0003] However, due to the structural characteristics between the two, the projection of the joint on the horizontal plane is non-circular, and it is impossible to use conventional rotary welding equipment to form a good weld on the joint. Summary of the invention

[0004] The purpose of the present invention is to provide a seamless welding device for conical parts, which is used to solve the problem that the conventional rotary welding device cannot be used to weld the conical parts on the side wall of the conical body due to structural defects of the existing welding device, and a good weld cannot be formed on the joint.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows: A conical piece seamless welding device, comprising: External support; A base, wherein the base is fixedly connected to the outer bracket; A mobile bracket, wherein the mobile bracket is installed on the base in a transverse sliding manner, and a moving mechanism for driving the mobile bracket to move transversely is also installed on the base, and a secondary bracket is installed on the mobile bracket; A rotating motor, wherein the rotating motor is fixedly mounted on the mobile support; A fixing mechanism for fixing the workpiece and making the upper contour line of the workpiece in a horizontal state, wherein the fixing mechanism is drivingly connected to the power output shaft of the rotating motor; A pressing mechanism for pressing the conical member onto the workpiece, the pressing mechanism being located above the workpiece and connected to the auxiliary support; A welding gun, which is mounted on the outer bracket and is located above the workpiece; The controller is connected with the moving mechanism, the rotating motor and the welding gun signal, and is used to drive the moving bracket to move horizontally according to the projection size of the lower end surface of the cone on the horizontal plane during the operation of the welding gun.

[0006] It is further defined that the fixing mechanism comprises a U-shaped platform, a positioning platform is provided on one side of the U-shaped platform, the inner side surface of the positioning platform is inclined inward from top to bottom, and the inner wall of the positioning platform is provided with a positioning member for radially positioning the workpiece; A pushing structure for pressing the workpiece to abut against the positioning platform is installed on one side of the U-shaped platform away from the positioning platform.

[0007] Such a structural design, through the inclination of the positioning table, can ensure that when the conical workpiece is pressed against the inner side of the positioning table, the upper contour line of the workpiece is in a horizontal state, and the radial positioning of the workpiece is completed by cooperating with the positioning piece, and the workpiece is squeezed by the pushing mechanism to fix the workpiece. It has a simple structure, high control accuracy and strong practicality.

[0008] It is further defined that the positioning platform is detachably connected to the U-shaped platform.

[0009] Such a structural design can adapt to different workpieces through the detachable connection of the positioning table, enhance the adaptability of the fixing mechanism, and has strong practicality.

[0010] It is further defined that the positioning member is ring-shaped.

[0011] Such a structural design completes the radial positioning of the workpiece through the annular positioning piece, so that there is a sufficient contact area between the positioning piece and the workpiece, which can reduce the amount of deformation of the workpiece when the pressing mechanism presses the workpiece through the conical piece. At the same time, the annular positioning piece has two working surfaces, the inner wall and the outer wall, which can contact the workpiece, which can enhance the adaptability of the positioning piece and has strong practicality.

[0012] It is further defined that the pushing structure includes a locking cylinder and a locking platform, and the locking platform is installed at the telescopic end of the locking cylinder.

[0013] This structural design, through the locking cylinder pushing the locking table, cooperates with the positioning table to complete the fixation of the workpiece, and uses the locking table to increase the contact area. It has a simple structure, is easy to control, and is highly practical.

[0014] It is further defined that a ball joint is installed between the locking platform and the telescopic end of the locking cylinder.

[0015] This structural design realizes the movable installation between the locking table and the telescopic end of the locking cylinder through the ball joint, so that when dealing with workpieces with different tapers, there is no need to adjust the angle of the locking table, which is more convenient to use and has strong practicality.

[0016] It is further defined that a gas jet gun for blowing inert gas to the welding position is installed on the pressing mechanism.

[0017] This structural design uses a jet gun to blow inert gas to the welding position, which can not only reduce the oxygen content at the welding position, but also quickly reduce the temperature of the welding position, thereby avoiding oxidation of the welding position due to the high temperature generated by welding, and then causing color difference problems. It is very practical.

[0018] It is further defined that the pressing mechanism includes a pressing cylinder, a lifting frame and a pressing platform; The pressing cylinder is fixedly mounted on the mobile bracket; The lifting frame is vertically slidably mounted on the movable bracket and is fixedly connected to the telescopic end of the pressing cylinder; The pressing platform is installed on a lifting frame.

[0019] This structural design, through the mutual cooperation of the pressing cylinder, the lifting frame and the pressing platform, utilizes the extension and retraction of the telescopic end of the pressing cylinder to realize the lifting and lowering of the pressing platform, and then achieves the technical purpose of squeezing the cone onto the workpiece. It has a simple structure, is easy to control, and is highly practical.

[0020] It is further defined that the press table is rotatably mounted on a lifting frame.

[0021] Such a structural design, through the rotatable installation of the press plate, allows the press plate to rotate with the cone when the rotating motor drives the workpiece and the cone to rotate, thereby avoiding relative rotation between the press plate and the cone, and thus avoiding the problem of friction affecting the rotation, and is highly practical.

[0022] It is further defined that a connecting shaft is installed on the press table, a vertical through hole is opened on the lifting frame, and the connecting shaft is inserted into the vertical through hole; The connecting shaft is fixed with a first limiting ring above the lifting frame; The connecting shaft is fixedly provided with a second limiting ring below the lifting frame; The connecting shaft is sleeved with a compression spring between the second limiting ring and the lifting frame.

[0023] Such a structural design provides a buffer for the connection between the press table and the lifting frame through the compression spring, and is highly practical.

[0024] The invention adopting the above technical solution has the following advantages: 1. The workpiece and the conical part are fixed by a fixing mechanism and a pressing mechanism. The workpiece and the conical part are driven to rotate by a rotating motor. During the rotation, the control machine controls the moving bracket to move horizontally according to the projection size of the lower end surface of the conical part on the horizontal plane to adapt to the special structure of the conical part. Then, the welding gun is used for welding to achieve the purpose of welding the conical part on the side wall of the conical body. 2. Through the inclination of the positioning table, when the conical workpiece is pressed against the inner side of the positioning table, the upper contour line of the workpiece is in a horizontal state. The radial positioning of the workpiece is completed by cooperating with the positioning piece, and the workpiece is squeezed by the pushing mechanism to fix the workpiece. The structure is simple, the control accuracy is high, and the practicability is strong. 3. Through the detachable connection of the positioning table, it can adapt to different workpieces, enhance the adaptability of the fixing mechanism, and has strong practicality; 4. The movable installation between the locking platform and the telescopic end of the locking cylinder is realized through the ball joint, so that when the workpieces with different tapers are used, there is no need to adjust the angle of the locking platform, which is more convenient to use and more practical; 5. Blowing inert gas to the welding position through the air jet gun can not only reduce the oxygen content at the welding position, but also quickly reduce the temperature of the welding position, avoiding oxidation at the welding position due to the high temperature generated by welding, and then causing color difference problems. It is very practical; 6. By cooperating with each other among the pressing cylinder, the lifting frame and the pressing table, and utilizing the extension and retraction of the telescopic end of the pressing cylinder, the lifting and lowering of the pressing table is realized, thereby achieving the technical purpose of squeezing the conical part onto the workpiece. The structure is simple, the control is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 It is a structural schematic diagram of an embodiment of a tapered part seamless welding device of the present invention; Figure 2 It is a structural schematic diagram of a tapered seamless welding device in use according to an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle; The main component symbols are described as follows: Base 1, workpiece 10, cone 11, Mobile bracket 2, auxiliary bracket 20, Rotating motor 3, U-shaped platform 4, positioning platform 41, positioning member 410, Locking cylinder 42, locking platform 420, ball joint 421, Pressing cylinder 5, lifting frame 51, pressing platform 52, connecting shaft 53, The first limiting ring 541, the second limiting ring 542, the compression spring 55, Welding gun 6, Air gun 7. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions of the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0027] like Figure 1 to Figure 3 As shown, a conical member seamless welding device of the present invention comprises: External support; Base 1, base 1 is fixedly connected to the outer bracket; The mobile bracket 2 is installed on the base 1 in a lateral sliding manner. The base 1 is also provided with a moving mechanism for driving the mobile bracket 2 to move lateraly. The mobile bracket 2 is provided with a secondary bracket 20; A rotating motor 3, wherein the rotating motor 3 is fixedly mounted on the moving bracket 2; A fixing mechanism for fixing the workpiece 10 and making the upper contour line of the workpiece 10 in a horizontal state, the fixing mechanism being drivingly connected to the power output shaft of the rotating motor 3; A pressing mechanism for pressing the cone 11 onto the workpiece 10, the pressing mechanism being located above the workpiece 10 and connected to the auxiliary support 20; A welding gun 6, which is mounted on an outer bracket and is located above a workpiece 10; The controller is connected to the moving mechanism, the rotating motor 3 and the welding gun 6 by signals, and is used to drive the moving bracket 2 to move horizontally according to the projection size of the lower end surface of the cone 11 on the horizontal plane during the operation of the welding gun 6.

[0028] The moving mechanism is a linear motor.

[0029] In fact, according to actual conditions, a servo motor and a screw rod can be selected to complete the movement of the mobile bracket 2. In this embodiment, a linear motor is used as a moving mechanism to drive the mobile bracket 2 to achieve lateral movement on the base 1. It has a simple structure, high control accuracy and strong practicality.

[0030] The fixing mechanism includes a U-shaped platform 4, a positioning platform 41 is provided on one side of the U-shaped platform 4, the inner side surface of the positioning platform 41 is inclined inward from top to bottom, and the inner wall of the positioning platform 41 is provided with a positioning member 410 for radially positioning the workpiece 10; A pushing structure for pressing the workpiece 10 to abut against the positioning platform 41 is installed on the side of the U-shaped platform 4 away from the positioning platform 41 .

[0031] In fact, according to actual conditions, the fixing mechanism can also be set as a mechanical clamping claw to fix the workpiece 10 with the clamping claw. In this embodiment, by tilting the positioning table 41, when the conical workpiece 10 is pressed against the inner side surface of the positioning table 41, the upper contour line of the workpiece 10 is in a horizontal state, and the positioning member 410 is used to complete the radial positioning of the workpiece 10, and then the pushing mechanism is used to squeeze the workpiece 10 to complete the fixation of the workpiece 10. The structure is simple, the control accuracy is high, and the practicability is strong.

[0032] The positioning platform 41 is detachably connected to the U-shaped platform 4 .

[0033] In fact, the positioning platform 41 can also be directly fixed on the U-shaped platform 4 according to actual conditions. This embodiment can adapt to different workpieces 10 through the detachable connection of the positioning platform 41, enhance the adaptability of the fixing mechanism, and has strong practicality.

[0034] The positioning member 410 is ring-shaped.

[0035] In fact, according to actual conditions, the positioning member 410 can be set to a truncated cone shape, or a plurality of circumferentially distributed positioning legs can be used to complete the radial positioning of the workpiece 10. In this embodiment, the radial positioning of the workpiece 10 is completed by the annular positioning member 410, so that there is a sufficient contact area between the positioning member 410 and the workpiece 10, which can reduce the amount of deformation of the workpiece 10 when the pressing mechanism presses the workpiece 10 through the conical member 11. At the same time, the annular positioning member 410 has two working surfaces, the inner wall and the outer wall, which can contact the workpiece 10, which can enhance the adaptability of the positioning member 410 and has strong practicality.

[0036] The pushing structure includes a locking cylinder 42 and a locking platform 420 . The locking platform 420 is installed at the telescopic end of the locking cylinder 42 .

[0037] In fact, according to actual conditions, a screw rod can also be selected as the driving mechanism to rotate the screw rod to achieve the purpose of squeezing the workpiece 10 to rest against the positioning table 41. In this embodiment, the locking cylinder 42 pushes the locking table 420 to cooperate with the positioning table 41 to fix the workpiece 10, and the locking table 420 increases the contact area. It has a simple structure, is easy to control, and is highly practical.

[0038] A ball joint 421 is installed between the locking platform 420 and the telescopic end of the locking cylinder 42 .

[0039] In fact, according to actual conditions, the locking platform 420 can be detachably installed on the telescopic end of the locking cylinder 42. When dealing with workpieces 10 with different tapers, different locking platforms 420 can be replaced. This embodiment realizes the movable installation between the locking platform 420 and the telescopic end of the locking cylinder 42 through the ball joint 421, so that when dealing with workpieces 10 with different tapers, there is no need to adjust the angle of the locking platform 420, which is more convenient to use and more practical.

[0040] The pressing mechanism is provided with a gas jet gun 7 for blowing inert gas to the welding position.

[0041] By blowing inert gas to the welding position through the jet gun 7, the oxygen content of the welding position can be reduced, and the temperature of the welding position can be quickly lowered to avoid oxidation of the welding position due to the high temperature generated by welding, thereby preventing the color difference problem from occurring. It is highly practical.

[0042] The pressing mechanism includes a pressing cylinder 5, a lifting frame 51 and a pressing platform 52; The pressing cylinder 5 is fixedly mounted on the mobile bracket 2; The lifting frame 51 is vertically slidably mounted on the mobile bracket 2 and is fixedly connected to the telescopic end of the pressing cylinder 5; The press table 52 is installed on the lifting frame 51 .

[0043] In fact, according to actual conditions, it is also possible to directly select a pressure block that is vertically slidably set on the movable bracket 2, and set a spring between the pressure block and the movable bracket 2 to extrude the conical part 11. This embodiment achieves the technical purpose of squeezing the conical part 11 onto the workpiece 10 by cooperating with the pressing cylinder 5, the lifting frame 51 and the pressing platform 52, and utilizing the extension and retraction of the telescopic end of the pressing cylinder 5. The structure is simple, the control is convenient, and the practicability is strong.

[0044] The press table 52 is rotatably mounted on the lifting frame 51 .

[0045] In fact, according to actual conditions, the press plate 52 can be directly fixed on the lifting frame 51 and installed by rotation. When the rotating motor 3 drives the workpiece 10 and the conical part 11 to rotate, the press plate 52 can rotate with the conical part 11, thereby avoiding relative rotation between the press plate 52 and the conical part 11, and thus avoiding the problem of friction affecting the rotation. This is very practical.

[0046] A connecting shaft 53 is installed on the press table 52, and a vertical through hole is opened on the lifting frame 51, and the connecting shaft 53 is inserted into the vertical through hole; The connecting shaft 53 is fixed with a first limiting ring 541 above the lifting frame 51; The connecting shaft 53 is fixed with a second limiting ring 542 below the lifting frame 51; The connecting shaft 53 is sleeved with a compression spring 55 between the second limiting ring 542 and the lifting frame 51 .

[0047] In fact, according to actual conditions, the pressing platform 52 can be directly fixed on the lifting frame 51 to provide a buffer for the connection between the pressing platform 52 and the lifting frame 51 through the compression spring 55, which is more practical.

[0048] In this embodiment, when used, the following steps are included: 1. First, select and install the corresponding positioning platform 41 on the U-shaped platform 4 according to the taper and inner diameter of the workpiece 10; 2. Then, the specific parameters of the cone 11 are input into the control system, and the control system controls the movable bracket 2 to move horizontally via the linear motor, so that the central axis of the cone 11 coincides with the central axis of the rotating motor 3; 3. Put the workpiece 10 onto the positioning member 410, and push the locking platform 420 toward the workpiece 10 through the locking cylinder 42 to fix the workpiece 10; 4. Place the cone 11 on the workpiece 10 and adjust the position so that the bottom of the cone 11 completely fits the outer wall of the workpiece 10: 5. Control the pressing cylinder 5 to drive the lifting frame 51 to move downward, and drive the pressing platform 52 to squeeze the cone 11 to complete the fixation; 6. The control system controls the welding gun 6 and the air gun 9 to start, and controls the rotary motor 3 to drive the U-shaped table 4 to rotate, thereby driving the workpiece 10 and the conical member 11 to rotate together. During the rotation process, the control system drives the movable bracket 2 to move left and right through the linear motor according to the specific information of the conical member 11, so as to ensure that the welding position of the welding gun 6 changes with the contour line of the lower end surface of the conical member 11; 7. After rotating 360°, control the welding gun 6 and the air jet gun 7 to stop working, and control the rotating motor 3 to drive the U-shaped table 4 to reverse and reset.

[0049] The above is a detailed introduction to a tapered seamless welding device provided by the present invention. The description of the specific embodiment is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A conical seamless welding device, characterized in that: include: External support; A base (1), the base (1) being fixedly connected to the outer bracket; A movable bracket (2), the movable bracket (2) being mounted on the base (1) in a transversely sliding manner, the base (1) being further mounted with a movable mechanism for driving the movable bracket (2) to move transversely, and the movable bracket (2) being mounted with a secondary bracket (20); A rotating motor (3), wherein the rotating motor (3) is fixedly mounted on the movable bracket (2); A fixing mechanism for fixing the workpiece (10) and making the upper contour line of the workpiece (10) in a horizontal state, the fixing mechanism being drivingly connected to the power output shaft of the rotating motor (3); A pressing mechanism for pressing the conical member (11) onto the workpiece (10), the pressing mechanism being located above the workpiece (10) and connected to the auxiliary support (20); A welding gun (6), the welding gun (6) being mounted on an outer bracket and located above a workpiece (10); A controller is connected to the moving mechanism, the rotating motor (3) and the welding gun (6) by signals, and is used to drive the moving bracket (2) to move horizontally according to the projection size of the lower end surface of the cone (11) on the horizontal plane during the operation of the welding gun (6).

2. A conical member seamless welding device according to claim 1, characterized in that: The fixing mechanism comprises a U-shaped platform (4), a positioning platform (41) is provided on one side of the U-shaped platform (4), the inner side surface of the positioning platform (41) is inclined inward from top to bottom, and a positioning piece (410) for radially positioning the workpiece (10) is provided on the inner wall of the positioning platform (41); A pushing structure for pressing the workpiece (10) to abut against the positioning platform (41) is installed on the side of the U-shaped platform (4) away from the positioning platform (41).

3. A conical member seamless welding device according to claim 2, characterized in that: The positioning platform (41) is detachably connected to the U-shaped platform (4).

4. A conical member seamless welding device according to claim 2, characterized in that: The positioning member (410) is ring-shaped.

5. A conical member seamless welding device according to claim 2, characterized in that: The pushing structure comprises a locking cylinder (42) and a locking platform (420), wherein the locking platform (420) is mounted on the telescopic end of the locking cylinder (42).

6. A conical member seamless welding device according to claim 5, characterized in that: A ball joint (421) is installed between the locking platform (420) and the telescopic end of the locking cylinder (42).

7. A conical member seamless welding device according to claim 1, characterized in that: The pressing mechanism is provided with a gas jet gun (7) for blowing inert gas to the welding position.

8. A conical member seamless welding device according to claim 1, characterized in that: The pressing mechanism comprises a pressing cylinder (5), a lifting frame (51) and a pressing platform (52); The pressing cylinder (5) is fixedly mounted on the movable bracket (2); The lifting frame (51) is vertically slidably mounted on the movable bracket (2) and is fixedly connected to the telescopic end of the pressing cylinder (5); The pressing platform (52) is installed on the lifting frame (51).

9. A conical member seamless welding device according to claim 8, characterized in that: The pressing platform (52) is rotatably mounted on the lifting frame (51).

10. A conical member seamless welding device according to claim 9, characterized in that: A connecting shaft (53) is installed on the pressing platform (52), a vertical through hole is opened on the lifting frame (51), and the connecting shaft (53) is inserted into the vertical through hole; The connecting shaft (53) is fixedly provided with a first limiting ring (541) above the lifting frame (51); The connecting shaft (53) is fixedly provided with a second limiting ring (542) below the lifting frame (51); The connecting shaft (53) is sleeved with a compression spring (55) between the second limiting ring (542) and the lifting frame (51).

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