Displacement machine chuck device for robot to automatically weld oil pipe flange

Abstract

The utility model belongs to the technical field of oil pipe flange welding, and particularly relates to a positioner chuck device for a robot to automatically weld an oil pipe flange, which comprises a chuck support component and a chuck component. The chuck support assembly comprises a bottom plate, an eccentric supporting column and a hollow mounting plate, one end of the eccentric supporting column is connected to the peripheral edge of the bottom plate, the other end of the eccentric supporting column is connected to the peripheral edge of the hollow mounting plate, the chuck assembly is mounted on the hollow mounting plate and located on the side away from the bottom plate, and a robot penetrating opening A is formed in the center of the hollow mounting plate. By means of the chuck support assembly of a single-column supporting structure, an appropriate gap can be formed between the bottom plate and the hollow installation plate, enough operation space can be reserved for a robot to conduct welding operation, a welding gun of the robot can simply weld the whole inner side of an oil pipe and an oil pipe flange, and the welding efficiency is improved. And a whole welding seam is welded by rotating a circle, so that the automatic repeated welding operation of the robot can be better applied.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil pipe flange welding, in particular to a positioner chuck device used for automatic welding of oil pipe flanges by robots. Background Art

[0002] Currently, when welding oil pipe flanges, the positioner's chuck assembly is typically used to clamp the flange, then join the pipe and flange at the desired location and weld. However, the positioner's chuck assembly is typically simply mounted on a fixed, solid chuck support, making it difficult to automatically weld the entire pipe and flange from the inside using a robot while maintaining the flange clamped in the positioner's chuck assembly. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a positioner chuck device for automatic welding of oil pipe flanges by robots.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A positioner chuck device for robot automatic welding of oil pipe flanges, comprising a chuck support assembly and a chuck assembly;

[0006] The chuck support assembly includes a base plate, an eccentric support, and a hollow mounting plate. One end of the eccentric support is connected to the outer edge of the base plate, and the other end of the eccentric support is connected to the outer edge of the hollow mounting plate. The chuck assembly is installed on the hollow mounting plate and is located on a side away from the base plate. A robot passage A is formed at the center of the hollow mounting plate.

[0007] A plurality of reinforcing ribs are fixedly connected between the eccentric support, the bottom plate and the hollow mounting plate.

[0008] The chuck support assembly includes a central support ring, a hollow turntable, a chuck finger drive ring, a plurality of chuck finger limit plates and a plurality of chuck fingers;

[0009] The central support ring is fixedly connected to a side surface of the hollow mounting plate away from the bottom plate, the central support ring is located outside the robot through-port A, the center of the central support ring forms a robot through-port B, the hollow turntable and the chuck finger drive ring are respectively sleeved on the outer circumferential surface of the central support ring, the chuck finger drive ring is fixedly connected to a side surface of the hollow turntable away from the bottom plate, and the center line of the robot through-port A, the center line of the robot through-port B, the center line of the hollow turntable and the center line of the chuck finger drive ring are all collinear;

[0010] The length direction of each chuck clamping finger is respectively parallel to the radial direction of the chuck clamping finger driving ring, and a plurality of driving teeth are protruding from the bottom surface of each chuck clamping finger. A vortex wire winding groove is provided on the side surface of the chuck clamping finger driving ring away from the bottom plate, which is respectively matched with and used in conjunction with the driving teeth of each chuck clamping finger. Each chuck clamping finger limit plate is respectively installed on the central support ring, and a limit groove is formed between every two adjacent chuck clamping finger limit plates for allowing a corresponding chuck clamping finger to move radially along the chuck clamping finger driving ring.

[0011] Both sides of the length direction of each chuck finger are protruding with a lower limit edge A, and the edge of each chuck finger limit plate forms an upper limit edge for blocking the lower limit edge A of the corresponding chuck finger.

[0012] A lower limit edge B is protruded from one end of the length direction of each chuck finger close to the center line of the robot passing opening B.

[0013] The outer circumference of the hollow turntable is provided with a toothed surface; an outer mounting seat is installed on the outer side of the hollow mounting plate, a worm mounting frame is installed on the outer mounting seat, a worm is rotatably installed on the inner side of the worm mounting frame, and the worm is provided with a self-locking thread that meshes with the toothed surface of the hollow turntable.

[0014] One end of the worm extends out of the worm mounting frame and is connected with a handle.

[0015] The advantages and positive effects of this utility model are:

[0016] 1. The utility model forms a chuck support assembly with a single-column support structure, which can form a suitable gap between the base plate and the hollow mounting plate, leaving sufficient operating space for the robot to perform welding operations. The robot's welding gun can simply weld the entire inner side of the oil pipe and the oil pipe flange, and complete a full weld in one rotation, which can better adapt to the robot's automatic repetitive welding operations.

[0017] 2. The utility model has a self-locking function and can clamp workpieces weighing more than 500KG through simple manual rotation operations, ensuring the stability of welding operations and the accuracy of parts positioning, so that the oil pipe flange is accurately positioned without gaps, ensuring welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the three-dimensional structural diagrams of the present utility model;

[0019] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 3This is a side structural diagram of the present utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the chuck support assembly of the present utility model;

[0022] Figure 5 This is a structural diagram of the chuck assembly of the utility model when clamping the oil pipe flange;

[0023] Figure 6 This is a schematic diagram of the external structure of the chuck assembly of the present invention after the chuck finger limit plate is removed;

[0024] Figure 7 This is the second schematic diagram of the external structure of the chuck assembly of the present invention after the chuck finger limit plate is removed;

[0025] Figure 8 This is a schematic cross-sectional view of the chuck assembly of the present invention after the chuck finger limit plate is removed;

[0026] Figure 9 for Figure 2 Enlarged view of point A.

[0027] In the figure: 1 is the base plate, 2 is the eccentric support, 3 is the hollow mounting plate, 301 is the robot through-port A, 4 is the reinforcing rib, 5 is the center support ring, 6 is the hollow turntable, 601 is the toothed surface, 7 is the chuck finger drive ring, 701 is the scroll wire winding groove, 8 is the chuck finger limit plate, 801 is the upper limit edge, 9 is the chuck finger, 901 is the drive tooth, 902 is the lower limit edge A, 903 is the lower limit edge B, 10 is the outer mounting seat, 11 is the worm mounting frame, 12 is the worm, and 13 is the handle;

[0028] 001 is the oil pipe flange, 002 is the oil pipe, and 003 is the weld. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-9 The utility model is further described in detail.

[0030] A positioner chuck device for robot automatic welding of oil pipe flanges, such as Figure 1-9 As shown, it includes a chuck support assembly and a chuck assembly.

[0031] In this embodiment, the chuck support assembly includes a base plate 1, an eccentric support post 2, and a hollow mounting plate 3. One end of the eccentric support post 2 is connected to the outer edge of the base plate 1, and the other end of the eccentric support post 2 is connected to the outer edge of the hollow mounting plate 3. The chuck assembly is mounted on the hollow mounting plate 3, away from the base plate 1. A robot passage opening A 301 is formed at the center of the hollow mounting plate 3. By positioning the eccentric support post 2 at the outer edges of the base plate 1 and the hollow mounting plate 3, a single-column support structure is formed. This creates a suitable gap between the base plate 1 and the hollow mounting plate 3, leaving sufficient operating space for the robot to perform welding operations. The robot's welding gun can simply extend between the base plate 1 and the hollow mounting plate 3 and weld the entire inner side of the oil pipe 002 and the oil pipe flange 001 through the robot passage opening A 301, completing a complete weld seam 003 with one rotation.

[0032] Specifically, if Figure 4 As shown, in this embodiment, a number of reinforcing ribs 4 are fixedly connected between the eccentric pillar 2 and the base plate 1 and the hollow mounting plate 3 respectively. The eccentric pillar 2, the base plate 1, the hollow mounting plate 3 and the reinforcing ribs 4 form an integrated structure, which can better ensure the supporting strength of the eccentric pillar 2.

[0033] Specifically, if Figure 5-9 As shown, the chuck support assembly in this embodiment includes a central support ring 5, a hollow turntable 6, a chuck finger driving ring 7, four evenly arranged chuck finger limiting plates 8 and four evenly arranged chuck fingers 9.

[0034] The center support ring 5 is screwed to the side of the hollow mounting plate 3 facing away from the base plate 1. The center support ring 5 is located outside the robot access opening A 301. The center of the center support ring 5 forms the robot access opening B. The hollow turntable 6 and the chuck finger drive ring 7 are respectively mounted on the outer circumference of the center support ring 5. The chuck finger drive ring 7 is screwed to the side of the hollow turntable 6 facing away from the base plate 1. The centerlines of the robot access opening A 301, robot access opening B, hollow turntable 6, and chuck finger drive ring 7 are all collinear. This means that the robot access opening B corresponds to the robot access opening A 301, facilitating welding operations using the robot's welding gun inside the chuck support assembly.

[0035] The length direction of each chuck finger 9 is parallel to the radial direction of the chuck finger drive ring 7. A plurality of drive teeth 901 are protruding from the bottom surface of each chuck finger 9. A vortex wire winding groove 701 is provided on the side of the chuck finger drive ring 7 away from the base plate 1, which is respectively matched with and used in conjunction with the drive teeth 901 of each chuck finger 9. Each chuck finger limit plate 8 is respectively installed on the central support ring 5 by screws. A limit groove is formed between each two adjacent chuck finger limit plates 8 for moving the corresponding chuck finger 9 along the radial direction of the chuck finger drive ring 7. In this embodiment, the arrangement of the vortex wire winding groove 701, the drive teeth 901 and the limit groove all adopt the existing technology. By driving the hollow turntable 6 and the chuck clamping finger drive ring 7 to be fixed together and rotate around the center line of the robot through the port A 301, the chuck clamping finger 9 is simultaneously driven to move radially inward and outward along the chuck clamping finger drive ring 7 through the coordinated setting structure of the vortex wire groove 701 and the drive tooth 901, thereby clamping or loosening the oil pipe flange 001.

[0036] Specifically, if Figure 2 and Figure 9 As shown, in this embodiment, both sides of the length direction of each chuck finger 9 are protruded with a lower limit edge A 902, and the edge of each chuck finger limit plate 8 is formed with an upper limit edge 801 for blocking the lower limit edge A 902 of the corresponding chuck finger 9, which can effectively limit the chuck finger 9 and prevent the chuck finger 9 from detaching from the chuck finger drive ring 7, ensuring the stable radial movement of the chuck finger 9 along the chuck finger drive ring 7.

[0037] Specifically, if Figure 7 and Figure 8 As shown, in this embodiment, each chuck finger 9 has a raised lower limit edge B903 at one end of its longitudinal direction, near the centerline of the robot's insertion port B. This lower limit edge B903 provides axial positioning of the oil pipe flange 002, enabling repeated batch processing of the same oil pipe flange 001 and oil pipe 002. This allows the robot to teach a single program for all identical oil pipe workpieces, making it more convenient and reliable. In this embodiment, the lower limit edge B903 and lower limit edge A902 of the same chuck finger 9 can be continuous for easier processing.

[0038] Specifically, if Figure 1-3 and Figure 5-7As shown, in this embodiment, the outer circumference of the hollow turntable 6 is provided with a toothed surface 601; an outer mounting seat 10 is mounted on the outer side of the hollow mounting plate 3, on which a worm mounting frame 11 is mounted. A worm 12 is rotatably mounted on the inner side of the worm mounting frame 11. The worm 12 is provided with a self-locking thread that meshes with the toothed surface 601 of the hollow turntable 6. One end of the worm 12 extends beyond the worm mounting frame 11 and is connected to a handle 13 for manually controlling the rotation of the worm 12. By rotating the worm 12, the hollow turntable 6 with the toothed surface 601 is driven to rotate, and a self-locking function is achieved. This makes it more suitable for clamping large workpieces weighing over 500 kg. Compared with existing chuck assemblies, the structure is simpler and the clamping effect is more reliable.

Claims

1. A positioner chuck device for robot automatic welding of oil pipe flanges, characterized by: It includes a chuck support assembly and a chuck assembly; The chuck support assembly comprises a base plate (1), an eccentric support (2), and a hollow mounting plate (3), one end of the eccentric support (2) is connected to the peripheral edge of the base plate (1), and the other end of the eccentric support (2) is connected to the peripheral edge of the hollow mounting plate (3), the chuck assembly is mounted on the hollow mounting plate (3) and is located on a side away from the base plate (1), and a robot passage A (301) is formed at the center of the hollow mounting plate (3).

2. The positioner chuck device for robot automatic welding of oil pipe flanges according to claim 1, characterized in that: A plurality of reinforcing ribs (4) are respectively fixedly connected between the eccentric support (2), the base plate (1) and the hollow mounting plate (3).

3. The positioner chuck device for robot automatic welding of oil pipe flanges according to claim 1 is characterized in that: The chuck support assembly comprises a central support ring (5), a hollow turntable (6), a chuck finger driving ring (7), a plurality of chuck finger limiting plates (8) and a plurality of chuck fingers (9); The central support ring (5) is fixedly connected to a side surface of the hollow mounting plate (3) away from the bottom plate (1), the central support ring (5) is located outside the robot through-port A (301), and the center of the central support ring (5) forms a robot through-port B, the hollow turntable (6) and the chuck finger drive ring (7) are respectively sleeved on the outer peripheral surface of the central support ring (5), the chuck finger drive ring (7) is fixedly connected to a side surface of the hollow turntable (6) away from the bottom plate (1), and the center line of the robot through-port A (301), the center line of the robot through-port B, the center line of the hollow turntable (6) and the center line of the chuck finger drive ring (7) are all collinear; The length direction of each chuck clamping finger (9) is respectively parallel to the radial direction of the chuck clamping finger driving ring (7), and a plurality of driving teeth (901) are protruding from the bottom surface of each chuck clamping finger (9). A vortex wire winding groove (701) is provided on the side surface of the chuck clamping finger driving ring (7) away from the bottom plate (1) and is respectively matched with and used in conjunction with the driving teeth (901) of each chuck clamping finger (9). Each chuck clamping finger limiting plate (8) is respectively installed on the central support ring (5), and a limiting groove is formed between each two adjacent chuck clamping finger limiting plates (8) for allowing a corresponding chuck clamping finger (9) to move radially along the chuck clamping finger driving ring (7).

4. The positioner chuck device for robot automatic welding of oil pipe flanges according to claim 3 is characterized by: Both sides of the longitudinal direction of each chuck clamping finger (9) are provided with a lower limit edge A (902), and the edge of each chuck clamping finger limit plate (8) is formed with an upper limit edge (801) for blocking the lower limit edge A (902) of the corresponding chuck clamping finger (9).

5. The positioner chuck device for robot automatic welding of oil pipe flanges according to claim 3 is characterized by: Each of the chuck fingers (9) is provided with a lower limit edge B (903) at one end in the length direction close to the center line of the robot through-port B.

6. The positioner chuck device for robot automatic welding of oil pipe flanges according to claim 3, characterized in that: The outer peripheral surface of the hollow turntable (6) is provided with a toothed surface (601); an outer mounting seat (10) is installed on the outer side of the hollow mounting plate (3); a worm mounting frame (11) is installed on the outer mounting seat (10); a worm (12) is rotatably mounted on the inner side of the worm mounting frame (11); and the worm (12) is provided with a self-locking thread that meshes with the toothed surface (601) of the hollow turntable (6).

7. The positioner chuck device for robot automatic welding of oil pipe flanges according to claim 6, characterized in that: One end of the worm (12) extends out of the worm mounting frame (11) and is connected to a handle (13).

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