Welding device for intersecting line of middle opening of all-welded ball valve

Abstract

The utility model relates to the technical field of welding devices, in particular to an all-welded ball valve middle opening intersecting line welding device. According to the technical scheme, the device comprises a welding table, a ball valve containing block is rotationally connected to the center of the top of the welding table, a first mechanical arm and a second mechanical arm are fixedly installed at the top of the welding table, and a welding gun is fixedly installed at the top of the first mechanical arm; and the rotating ring assembly comprises a height ring, a rotating ring disc and clamps, the top of the height ring is rotationally connected with the rotating ring disc, and the top of the rotating ring disc is slidably connected with the two clamps which are symmetrically arranged. When the ball valve placing block drives the ball valve body to rotate, due to the fact that a welding point exists between the ball valve body and a workpiece, the ball valve body rotates to drive the workpiece to rotate synchronously, the height ring maintains the height of the workpiece, the clamp clamps the workpiece to enable the workpiece to be perpendicular to the horizontal plane, and the ball valve body and the workpiece rotate to facilitate welding of a welding gun. And the workpiece is prevented from inclining in the rotating process.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a central intersection line welding device for a fully welded ball valve. Background Art

[0002] A ball valve is a valve whose closing part is a sphere. The sphere is opened and closed by rotating the valve stem around the center line of the valve body. The intersection line of the ball valve refers to the geometric shape formed at the intersection of two or more welded parts. In welding, accurately controlling the shape and size of the intersection line can improve the quality and strength of the welded joint.

[0003] In the prior art, the positions of the ball valve and the workpiece are fixed by a fixture, the ball valve and the workpiece are welded by a welding gun, and the welding position of the pipeline in the middle of the ball valve is annularly welded by rotating the ball valve.

[0004] However, when the welding device is used to weld the ball valve and the workpiece, the workpiece is placed on the ball valve. During welding, the welding gun contacts the workpiece, which causes the welding between the workpiece and the ball valve to tilt. Utility Model Content

[0005] The utility model aims to solve the problem in the background technology that a welding gun contacts a workpiece, resulting in welding tilt, and proposes a center-mouth intersection line welding device for a fully welded ball valve.

[0006] The technical solution of the utility model is: a fully welded ball valve center intersection line welding device, comprising:

[0007] A welding table, wherein a ball valve placement block is rotatably connected at the top center of the welding table, a first mechanical arm and a second mechanical arm are fixedly installed on the top of the welding table, and a welding gun is fixedly installed on the top of the first mechanical arm;

[0008] The swivel assembly comprises a height ring, a swivel disk and a clamp, wherein the top of the height ring is rotatably connected to the swivel disk, and the top of the swivel disk is slidably connected to two symmetrically arranged clamps;

[0009] The outer arc surface of the height ring is fixedly connected to the second mechanical arm.

[0010] Optionally, the height ring is located directly above the center of the ball valve placement block, and the height ring and the ball valve placement block are parallel to each other.

[0011] Optionally, a notch is provided at the top center of the ball valve placement block, and a ball valve body is placed in the notch. The two clamps clamp a workpiece together, and the workpiece passes through the center of the height ring and the rotating ring disk.

[0012] Optionally, the clamp includes a clamping block, an outer storage cylinder, an extrusion rod and a contact switch, the middle part of the clamping block is slidably connected to the extrusion rod, the outer arc surface of the clamping block is fixedly installed with the outer storage cylinder, the contact switch is fixedly installed inside the outer storage cylinder and on the extension line of the end of the extrusion rod, the outer arc surface of the clamping block is fixedly installed with an electric push rod, and the contact switch is electrically connected to the electric push rod.

[0013] Optionally, the extrusion rod extends from the inner arc surface of the clamping block, there is a distance between the extrusion rod and the contact switch, and a return spring is elastically connected between the end of the extrusion rod and the outer storage tube.

[0014] Optionally, the bottom of the clamping block is slidably connected to the rotating ring disk, the top of the rotating ring disk is provided with symmetrically arranged sliding grooves, the clamping block slides in the sliding grooves of the rotating ring disk, and the electric push rod is fixedly installed in the sliding grooves of the rotating ring disk.

[0015] Optionally, two clamping blocks are provided, and the inner arc surfaces of the two clamping blocks clamp the workpiece.

[0016] Optionally, the welding gun is arranged at an angle, and the welding gun is directed toward the joint between the ball valve body and the workpiece.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] When the utility model drives the ball valve body to rotate through the ball valve placement block, since there is a welding point between the ball valve body and the workpiece, the rotation of the ball valve body will drive the workpiece to rotate synchronously, the height ring maintains the height of the workpiece, the clamp clamps the workpiece to make it perpendicular to the horizontal plane, and the ball valve body and the workpiece rotate together to facilitate welding with a welding gun, thereby avoiding the workpiece from tilting during the rotation process, which causes tilting in the welding.

[0019] Furthermore, the clamping block contacts the workpiece by extending the electric push rod, and the extrusion rod in the middle of the clamping block is squeezed into the outer storage tube. The extrusion rod squeezes the contact switch, indicating that the clamping block firmly clamps the workpiece. At this time, the contact switch stops the electric push rod from extending through the controller, thereby adapting to workpieces of different diameters, thereby welding ball valve bodies of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of an embodiment of the utility model is given;

[0021] Figure 2 A schematic diagram of the structure of a ball valve placement block according to an embodiment of the utility model is given;

[0022] Figure 3 A schematic diagram of the structure of a rotating ring disk according to an embodiment of the utility model is given;

[0023] Figure 4 A schematic top view and cross-sectional view of a clamping block structure of an embodiment of the utility model is given.

[0024] Figure numerals: 1. welding table; 2. ball valve placement block; 3. first robotic arm; 4. welding gun; 5. second robotic arm; 6. swivel assembly; 61. height ring; 62. swivel disk; 63. clamp; 631. clamp block; 632. electric push rod; 633. outer storage tube; 634. extrusion rod; 635. contact switch; 636. return spring. DETAILED DESCRIPTION

[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] This embodiment provides a fully welded ball valve center intersection line welding device, such as Figure 1 As shown, it comprises a welding platform 1, a ball valve placement block 2 is rotatably connected at the top center of the welding platform 1, a first mechanical arm 3 and a second mechanical arm 5 are fixedly installed on the top of the welding platform 1, and a welding gun 4 is fixedly installed on the top of the first mechanical arm 3;

[0032] like Figure 2 and 3 As shown, a swivel assembly 6 is provided on the side of the second mechanical arm 5, and the swivel assembly 6 includes a height ring 61, a swivel disk 62 and a clamp 63. The outer arc surface of the height ring 61 is fixedly connected to the second mechanical arm 5, and the top of the height ring 61 is rotatably connected to the swivel disk 62. The height ring 61 is located directly above the center of the ball valve placement block 2, and the height ring 61 and the ball valve placement block 2 are parallel to each other. The top of the swivel disk 62 is slidably connected to two symmetrically arranged clamps 63.

[0033] like Figure 2 As shown, a notch is provided at the top center of the ball valve placement block 2, and a ball valve body is placed at the notch. Two clamps 63 clamp a workpiece together, and the workpiece passes through the center of the height ring 61 and the rotating ring disk 62. The ball valve body is fixed by the ball valve placement block 2, and the clamp 63 clamps and fixes the position of the workpiece.

[0034] The center intersection line between the ball valve body and the workpiece is welded by the welding gun 4, and the ball valve placement block 2 is rotated to drive the ball valve body to rotate. When the ball valve placement block 2 drives the ball valve body to rotate, since there is a welding point between the ball valve body and the workpiece, the rotation of the ball valve body will drive the workpiece to rotate synchronously. The clamp 63 clamps the workpiece to fix the height of the workpiece and makes it perpendicular to the horizontal plane to prevent the workpiece from tilting during rotation and affecting the welding.

[0035] like Figure 1 As shown, the welding gun 4 is tilted to avoid being blocked by the ball valve body, and the welding gun 4 is directed toward the joint between the ball valve body and the workpiece. The ball valve body and the workpiece are welded by the welding gun 4.

[0036] Due to the different sizes of the ball valve body and the different positions of the new center intersection lines between the ball valve body and the workpiece, the first robot arm 3 is used to perform multi-directional adjustments to change the height and horizontal position of the welding gun 4 to adapt to ball valve bodies of different specifications, and the second robot arm 5 is used to perform multi-directional adjustments to change the height of the height ring 61 so that the workpiece and the ball valve body are docked.

[0037] In this embodiment, when the ball valve placement block 2 drives the ball valve body to rotate, since there is a welding point between the ball valve body and the workpiece, the rotation of the ball valve body will drive the workpiece to rotate synchronously. The height ring 61 maintains the height of the workpiece, and the clamp 63 clamps the workpiece to make it perpendicular to the horizontal plane. The ball valve body and the workpiece rotate together to facilitate welding by the welding gun 4, thereby preventing the workpiece from tilting during rotation.

[0038] Example 2

[0039] Based on Example 1, this embodiment proposes a fully welded ball valve center intersection line welding device, such as Figure 3 and 4 As shown, the clamp 63 includes a clamp block 631, an outer storage tube 633, an extrusion rod 634 and a contact switch 635. The middle part of the clamp block 631 is slidably connected to the extrusion rod 634, the bottom of the clamp block 631 is slidably connected to the rotating ring disk 62, and the top of the rotating ring disk 62 is provided with symmetrically arranged sliding grooves. The clamp block 631 slides in the sliding grooves of the rotating ring disk 62, and the electric push rod 632 is fixedly installed in the sliding grooves of the rotating ring disk 62. Two clamp blocks 631 are arranged, and the inner arc surfaces of the two clamp blocks 631 clamp the workpiece.

[0040] like Figure 4 As shown, the outer arc surface of the clamp block 631 is fixedly installed with an outer storage tube 633, and the contact switch 635 is fixedly installed inside the outer storage tube 633 and on the extension line of the end of the extrusion rod 634. The outer arc surface of the clamp block 631 is fixedly installed with an electric push rod 632, and the contact switch 635 is electrically connected to the electric push rod 632 through a controller.

[0041] The extrusion rod 634 extends from the inner arc surface of the clamping block 631 so that the workpiece contacts the extrusion rod 634. There is a distance between the extrusion rod 634 and the contact switch 635. A return spring 636 is elastically connected between the end of the extrusion rod 634 and the outer storage tube 633. The extrusion rod 634 moves to compress the return spring 636. After welding is completed, the extrusion rod 634 is no longer squeezed by the workpiece. At this time, the elastic force of the return spring 636 resets the extrusion rod 634.

[0042] The electric push rod 632 is extended to make the clamping block 631 contact the workpiece, and the squeezing rod 634 in the middle of the clamping block 631 is squeezed into the outer storage tube 633. The squeezing rod 634 squeezes the contact switch 635, indicating that the clamping block 631 firmly clamps the workpiece. At this time, the contact switch 635 stops the electric push rod 632 from extending through the controller to prevent the electric push rod 632 from further extending and deforming the workpiece.

[0043] In this embodiment, the electric push rod 632 is extended to make the clamping block 631 contact the workpiece, and the extrusion rod 634 in the middle of the clamping block 631 is squeezed into the outer storage tube 633. The extrusion rod 634 squeezes the contact switch 635, indicating that the clamping block 631 firmly clamps the workpiece. At this time, the contact switch 635 stops the electric push rod 632 from extending through the controller, so as to adapt to workpieces of different diameters, thereby welding ball valve bodies of different specifications.

[0044] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A fully welded ball valve center intersection line welding device, characterized in that: include: A welding table (1), wherein a ball valve placement block (2) is rotatably connected at the top center of the welding table (1), a first mechanical arm (3) and a second mechanical arm (5) are fixedly installed on the top of the welding table (1), and a welding gun (4) is fixedly installed on the top of the first mechanical arm (3); A swivel assembly (6) comprises a height ring (61), a swivel disk (62) and a clamp (63), wherein the top of the height ring (61) is rotatably connected to the swivel disk (62), and the top of the swivel disk (62) is slidably connected to two symmetrically arranged clamps (63); The outer arc surface of the height ring (61) is fixedly connected to the second mechanical arm (5).

2. A fully welded ball valve center intersection line welding device according to claim 1, characterized in that: The height ring (61) is located directly above the center of the ball valve placement block (2), and the height ring (61) and the ball valve placement block (2) are parallel to each other.

3. The fully welded ball valve center intersection line welding device according to claim 1, characterized in that: A notch is provided at the center of the top of the ball valve placement block (2), and a ball valve body is placed in the notch. The two clamps (63) clamp a workpiece together, and the workpiece passes through the center of the height ring (61) and the rotating ring disk (62).

4. A fully welded ball valve center intersection line welding device according to claim 1, characterized in that: The clamp (63) comprises a clamp block (631), an outer storage tube (633), an extrusion rod (634) and a contact switch (635); the middle part of the clamp block (631) is slidably connected to the extrusion rod (634); the outer storage tube (633) is fixedly mounted on the outer arc surface of the clamp block (631); the contact switch (635) is fixedly mounted inside the outer storage tube (633) and on the extension line of the end of the extrusion rod (634); an electric push rod (632) is fixedly mounted on the outer arc surface of the clamp block (631); and the contact switch (635) is electrically connected to the electric push rod (632).

5. A fully welded ball valve center intersection line welding device according to claim 4, characterized in that: The extrusion rod (634) extends from the inner arc surface of the clamping block (631), there is a distance between the extrusion rod (634) and the contact switch (635), and a return spring (636) is elastically connected between the end of the extrusion rod (634) and the outer storage tube (633).

6. A fully welded ball valve center intersection line welding device according to claim 5, characterized in that: The bottom of the clamping block (631) is slidably connected to the rotating ring disk (62), and the top of the rotating ring disk (62) is provided with symmetrically arranged sliding grooves. The clamping block (631) slides in the sliding grooves of the rotating ring disk (62), and the electric push rod (632) is fixedly installed in the sliding grooves of the rotating ring disk (62).

7. A fully welded ball valve center intersection line welding device according to claim 6, characterized in that: Two clamping blocks (631) are provided, and the inner arc surfaces of the two clamping blocks (631) clamp the workpiece.

8. The fully welded ball valve center intersection line welding device according to claim 1, characterized in that: The welding gun (4) is arranged at an angle, and the welding gun (4) faces the joint between the ball valve body and the workpiece.

Images