An automatic screw assembly device

Abstract

The utility model belongs to mechanical assembly technical field, concretely relates to a threaded automatic assembly device. Threaded automatic assembly device is used for assembling threaded spare and part, include: be used for depositing the feeding module of threaded spare and part, be used for conveying the conveying module of threaded spare and part, set up in the clamping module on conveying module, the clamping module includes movable setting base on conveying module and the clamp of rotary setting on base, the central axis of clamp is along vertical direction setting, set up between the carrying module of feeding module and conveying module, the carrying module constructs as can drive threaded spare and part move between feeding module and clamp.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly technology, specifically, it relates to an automated thread assembly device. Background Technology

[0002] In the field of oil extraction equipment, the tailpipe hanger is an important cementing tool, mainly used to fix the tailpipe downhole to ensure the smooth progress of drilling operations. However, the assembly process of the tailpipe hanger is quite complex, with the most critical assembly point being the threaded connection between the parts. Currently, this operation is mainly carried out manually or with chain clamps. This method requires a large amount of manpower and involves high labor intensity for workers, and the assembly quality is also affected by the workers' skills and experience.

[0003] With the expansion of the downhole tool market and the increasing proportion of complex oil and gas wells in high-pressure, high-sulfur, and high-risk areas, the demands for downhole tool production efficiency and product quality are constantly rising. Traditional manual assembly methods can no longer meet the growing order demand. Therefore, how to improve the assembly efficiency and quality of tailpipe hangers and reduce production costs is an urgent problem to be solved in the current oil extraction equipment industry.

[0004] Existing technologies include some mechanical assembly equipment, which mostly uses fixed hydraulic clamps in conjunction with gantry cranes to complete simple mechanized assembly operations. While these existing mechanized assembly devices have improved the assembly efficiency of tailpipe hangers to some extent, several problems remain. First, most existing mechanized assembly equipment employs a fixed design, unable to be flexibly adjusted according to actual production needs, which limits its application scope. Second, in actual assembly, manual intervention and monitoring are still required, increasing labor intensity and failing to completely eliminate the impact of human factors on assembly quality. Finally, the assembly efficiency and quality of existing mechanized assembly equipment still need improvement and cannot meet the demands of large-scale production. Utility Model Content

[0005] To address the technical problems mentioned above, this utility model aims to provide an automated thread assembly device that can improve the assembly efficiency and quality of tailpipe hangers and reduce production costs.

[0006] According to this utility model, an automated thread assembly device is provided for assembling threaded components, comprising:

[0007] A loading module for storing the threaded components;

[0008] A conveying module for conveying the threaded components;

[0009] The clamping module is mounted on the conveying module. The clamping module includes a base that is movable on the conveying module and a clamp that is rotatably mounted on the base. The central axis of the clamp is arranged in the vertical direction.

[0010] A transport module is disposed between the feeding module and the conveying module, and the transport module is configured to drive the threaded component to move between the feeding module and the clamp.

[0011] In one specific embodiment, the base includes an internal gear, a column is coaxially rotatably mounted on the internal gear, the clamp is fixedly connected to the column, a first motor is fixedly mounted relative to the column, a first gear is coaxially fixedly mounted on the output shaft of the first motor, and the first gear meshes with the internal gear.

[0012] In one specific embodiment, the clamp includes:

[0013] Multiple tracks are evenly spaced around the column along the circumference, and the extension axis of the tracks intersects the center of the column.

[0014] A movable gripper mounted on the track;

[0015] A turntable is coaxially rotatably mounted on the column, with the upper end of the turntable and the lower end of the gripper being adapted to each other. The turntable is configured to drive the gripper to move along the track by rotating.

[0016] In one specific embodiment, a spiral groove is provided at the upper end of the turntable, and a protrusion for fitting the spiral groove is provided at the lower end of the gripper.

[0017] In one specific embodiment, a second gear is coaxially fixedly disposed on the lower part of the turntable, a second motor is fixedly disposed relative to the column, and a third gear that meshes with the second gear is coaxially fixedly disposed on the output shaft of the second motor.

[0018] In one specific embodiment, a housing is coaxially rotatably disposed on the upper part of the internal gear. The housing includes a cylinder and an end cap coaxially fixedly disposed on the top of the cylinder. The upper ends of the column and the track are both fixedly connected to the end cap. A guide groove for accommodating the gripper is provided on the top of the housing.

[0019] In one specific embodiment, an inspection port is provided on the side wall of the cylinder at the positions corresponding to the first motor and the second motor, and a baffle is provided on the inspection port.

[0020] In one specific embodiment, the handling module includes a handling robot and a handling gripper disposed at the end of the handling robot.

[0021] In one specific embodiment, a 3D camera is provided on the handling gripper.

[0022] In one specific embodiment, a pressing module is provided on the conveying module, and the threaded automated assembly device further includes a PLC, which is electrically connected to the feeding module, the handling module, the clamping module, the pressing module and the conveying module.

[0023] Compared with the prior art, the advantages of this application are as follows.

[0024] This invention uses a transport module to move threaded parts stored on a loading module to a clamping module. After clamping the threaded parts, the clamping module can rotate the threaded parts. The transport module then moves another threaded part that needs to be installed above the first threaded part to the first threaded part. By setting and controlling the descent speed of the transport module and the rotation speed of the clamping module through program settings, and matching the thread pitch, the automated assembly of threads between parts can be achieved, which can save manpower, achieve high assembly quality, and achieve high assembly efficiency. Attached Figure Description

[0025] The present invention will now be described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of an embodiment of the threaded automated assembly device according to the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the clamping module proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the external structure of an embodiment of the clamping module proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the turntable and the gripper of the clamping module proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of one embodiment of the handling module proposed according to the present invention;

[0031] Figure 6 This is a schematic diagram of an embodiment of the handling gripper of the handling module according to the present invention;

[0032] Figure 7 This is a schematic diagram of one embodiment of the feeding module proposed according to the present invention.

[0033] The reference numerals in the figure are as follows:

[0034] 1. Feeding module; 11. Support frame; 12. Material tray; 13. Third guide rail; 14. Cylinder; 15. Signal controller; 2. Handling module; 21. Handling robot; 22. Handling gripper; 221. First guide rail; 222. Second guide rail; 223. Handling gripper; 224. Third motor; 225. Fourth motor; 226. Double threaded screw; 23. 3D camera; 3. Clamping module; 31. Base; 311. Internal gear; 32. Fixture; 321. Rail; 3 22. Gripper; 323. Turntable; 324. Spiral groove; 325. Protrusion; 326. Second gear; 327. Second motor; 328. Third gear; 33. Column; 34. First motor; 35. First gear; 36. Housing; 361. Cylinder; 362. End cap; 363. Guide groove; 364. Inspection port; 365. Baffle; 4. Press-fit module; 5. Conveying module; 6. PLC; 7. Assembly parts; 100. 3D vision recognition automated assembly device.

[0035] In this application, all the accompanying drawings are schematic drawings, used only to illustrate the principle of the present invention, and are not drawn to scale. Detailed Implementation

[0036] The present invention will now be described with reference to the accompanying drawings.

[0037] It should be noted that the directional terms or qualifiers used in this application, such as "up," "down," "front," "back," "left," and "right," are all in relation to the accompanying drawings. They are not used to define the absolute position of the components involved, but can vary depending on the specific circumstances.

[0038] Figure 1 The structure of the threaded automated assembly device 100 according to this utility model is shown. Figure 1 As shown, the thread automated assembly device 100 mainly includes a feeding module 1, a handling module 2, a conveying module 5, and a clamping module 3.

[0039] The feeding module 1 is used to store the threaded components 7, the handling module 2 is used to handle the threaded components 7, the clamping module 3 is used to clamp the threaded components 7, and the conveying module 5 is used to convey the threaded components 7. In this embodiment, the threaded components 7 specifically refer to the components of the tailpipe hanger that need to be connected to each other by threaded connection. It is easy to understand that although the threaded components 7 in this embodiment are components of the tailpipe hanger, this is not intended to limit the scope of protection of this utility model. The threaded components 7 can be any components that need to be connected to each other by threaded connection.

[0040] Furthermore, the clamping module 3 is movably mounted on the conveying module 5 and can rotate around a vertical axis. The transport module 2 is positioned between the conveying module 5 and the loading module 1. During operation, the transport module 2 picks up the first threaded component 7 from the loading module 1 and moves it to the clamping module 3, where it clamps the first threaded component 7. Then, the transport module 2 picks up the second threaded component 7 from the loading module 1 and moves it above the first threaded component 7. The descending speed of the second threaded component 7 driven by the transport module 2 and the rotational speed of the first threaded component 7 driven by the clamping module 3 are controlled by a program to match the thread pitch, thus achieving automated assembly of the threads between components.

[0041] In one embodiment of the present invention, a pressing module 4 is provided on the conveying module 5. When it is necessary to install a component such as a sealing ring into the threaded component 7, the sealing ring is manually placed above the threaded component 7 on the clamping module 3, and then the pressing module 4 presses the sealing ring into the threaded component 7.

[0042] In one embodiment of the present invention, the thread automated assembly device 100 further includes a PLC 6, which is electrically connected to the feeding module 1, the handling module 2, the clamping module 3, the pressing module 4 and the conveying module 5, thereby automating the control of the thread automated assembly device 100.

[0043] In a specific embodiment, such as Figure 1 and Figure 2 As shown, the clamping module 3 includes a base 31 and a clamp 32.

[0044] The base 31 is movably mounted on the conveying module 5, meaning that the base 31 can move along the conveying module 5, thereby driving the entire clamping module 3 to move along the conveying module 5.

[0045] The base 31 includes an internal gear 311, the central axis of which is vertically oriented. A column 33 is rotatably mounted on the base 31 relative to the internal gear 311. A clamp 32 is fixedly connected to the column 33; that is, when the column 33 rotates relative to the internal gear 311, it drives the clamp 32 to rotate as well. A first motor 34 is fixedly mounted relative to the column 33, and a first gear 35 is fixedly mounted coaxially on the output shaft of the first motor 34, meshing with the internal gear 311. Because the column 33 is fixedly connected to the first motor 34, when the first motor 34 rotates, it drives the first gear 35 to rotate. Under the meshing action of the first gear 35 and the internal gear 311, the first gear 35 rolls along the tooth edge of the internal gear 311, thereby causing the column 33 to rotate relative to the internal gear 311, and consequently, the clamp 32 to rotate relative to the internal gear 311.

[0046] like Figure 2 and Figure 4 As shown, the clamp 32 mainly includes a track 321, grippers 322, and a turntable 323. Multiple tracks 321 are evenly spaced around the column 33 along the circumferential direction, and the tracks 321 and the column 33 are relatively fixedly connected. When the column 33 rotates relative to the internal gear 311, the tracks 321 rotate with the column 33. The extension axis of the track 321 intersects the center of the column 33, and a gripper 322 is movably mounted on each track 321. The turntable 323 is located below the tracks 321 and is coaxially rotatably mounted on the column 33. The upper end of the turntable 323 is adapted to the lower end of the gripper 322, and the structure is such that the rotation of the turntable 323 drives the gripper 322 to move along the track 321. In other words, when the turntable 323 rotates relative to the column 33, it can drive the grippers 322 on each track 321 to move synchronously toward or away from the central axis of the column 33, thereby positioning and clamping the threaded component 7 located in the middle.

[0047] In a specific embodiment, such as Figure 2 and Figure 4 As shown, a spiral groove 324 is provided at the upper end of the turntable 323, and a protrusion 325 is provided at the lower end of the gripper 322 to fit the spiral groove 324. The protrusion 325 extends into the spiral groove 324. When the turntable 323 rotates, the spiral groove 324 rotates, and the gripper 322 moves along the track 321 through the protrusion 325.

[0048] In one specific embodiment, a second gear 326 is coaxially rotatably mounted on the column 33. The second gear is located below the turntable 323 and is fixedly connected to the turntable 323. A second motor 327 is fixedly mounted relative to the column 33, meaning the housing of the second motor 327 is fixedly connected to the column 33. A third gear 328 is coaxially fixedly mounted on the output shaft of the second motor 327, and the third gear 328 meshes with the second gear 326. After the second motor 327 is started, it can drive the third gear 328 to rotate. Under the meshing action of the second gear 326 and the third gear 328, the third gear 328 drives the second gear 326 to rotate, thereby causing the turntable 323 to rotate relative to the column 33. This causes the grippers 322 on each track 321 to move synchronously along the track 321 towards or away from the central axis of the column 33.

[0049] In a specific embodiment, such as Figure 3 As shown, a housing 36 is coaxially rotatably mounted on the upper part of the internal gear 311. The housing 36 includes a cylinder 361 and an end cap 362 coaxially fixedly mounted on the top of the cylinder 361. The upper ends of the column 33 and the track 321 are fixedly connected to the lower end face of the end cap 362. A guide groove 363 for accommodating the gripper 322 is provided on the end cap 362 of the housing 36, so that the gripper 322 can extend upward to the top of the end cap 362.

[0050] Inspection ports 364 are provided on the side wall of the cylinder 361 at positions corresponding to the first motor 34 and the second motor 327, and baffles 365 are provided on the inspection ports 364. In this embodiment, the baffles 365 are bolted to the cylinder 361 for easy disassembly and maintenance of the internal structure of the clamping module 3.

[0051] In one embodiment according to the present invention, such as Figure 5 As shown, the handling module 2 includes a handling robot 21 and a handling gripper 22 disposed at the end of the handling robot 21. The handling robot 21 consists of multiple robotic arms, and the specific mechanism of the handling robot 21 is well known to those skilled in the art and will not be described in detail here. The handling robot 21 can drive the handling gripper 22 to move between the loading module 1 and the clamping module 3, and the handling gripper 22 can grasp the threaded parts 7.

[0052] In one specific embodiment, a 3D camera 23 is installed on the handling gripper 22. By installing the 3D camera 23, a scanned model of the threaded component 7 is pre-established, enabling the identification and confirmation of the required parts during the actual assembly process. This allows the handling gripper 22 to accurately grasp the required parts with an accuracy error of 0.2mm. The above-mentioned part grasping and visual recognition processes are all implemented through PLC program control.

[0053] In one embodiment according to the present invention, such as Figure 6 As shown, the handling gripper 22 mainly includes a first guide rail 221, a second guide rail 222, and two handling claws 223. The first guide rail 221 is fixedly mounted on the end of the handling robot 21, the second guide rail 222 is movably mounted on the first guide rail 221, and the two handling claws 223 are movably mounted on the second guide rail 222. The two handling claws 223 are symmetrical to each other and are configured to move closer or further apart synchronously. The moving directions of the handling claws 223 and the second guide rail 222 are perpendicular to each other.

[0054] Furthermore, a third motor 224 is fixedly mounted at the end of the first guide rail 221. The third motor 224 is configured to drive the second guide rail 222 to move along the first guide rail 221. Specifically, a lead screw (not shown in the figure) is fixedly mounted on the output shaft of the third motor 24. The lead screw is parallel to the second guide rail 222, and a threaded hole adapted to the lead screw is provided on the first guide rail 221, through which the lead screw passes. In this configuration, after the third motor 224 is started, it drives the lead screw to rotate. Through the cooperation between the lead screw and the threaded hole, the second guide rail 222 moves along the first guide rail 221, thereby driving the transport claw 223 to move and adjusting the position of the transport claw 223.

[0055] A fourth motor 225 is fixedly mounted at the end of the second guide rail 222. The fourth motor 225 is configured to drive the two handling claws 223 to move closer or further away synchronously. Specifically, a double-threaded screw 226 is rotatably mounted on the second guide rail 222. The central axis of the double-threaded screw 226 is parallel to the direction of movement of the handling claws 223. The two axial portions of the double-threaded screw 226 have threads with opposite directions of rotation. The two handling claws 223 are respectively adapted to the threads of the two axial portions of the double-threaded screw 226. In this configuration, after the fourth motor 225 is started, it drives the double-threaded screw 226 to rotate. Since the threads of the two axial portions of the double-threaded screw 226 have opposite directions of rotation, the two handling claws 223 can move closer or further away synchronously, realizing the gripping and releasing of the threaded component 7.

[0056] In one embodiment provided according to the present invention, such as Figure 7 As shown, the feeding module 1 includes a support frame 11 and a material tray 12 movably mounted on the support frame 11. The support frame 11 provides support and is fixed to the ground with anchor bolts. Threaded parts 7 are stored on the material tray 12. Specifically, a third guide rail 13 and a cylinder 14 are fixedly mounted on the support frame 11, and the material tray 12 is movably mounted on the third guide rail 13. The telescopic end of the cylinder 14 is connected to the material tray 12. In this configuration, after the cylinder 14 is activated, it can drive the material tray 12 to move along the third guide rail 13, facilitating the handling module 2 to grasp the threaded parts 7.

[0057] In one embodiment of the present invention, a signal controller 15 is provided on the cylinder 14. The signal controller 15 is configured to control the extension and retraction of the cylinder 14. In use, the PLC 6 sends a signal to the signal controller to control the pressing and depressurizing of the cylinder 14 to achieve the sliding of the material tray 12 on the third guide rail 13.

[0058] The process of using the threaded automated assembly device 100 is as follows: Select the loading program. In PLC6, select the pre-tuned assembly program and start the loading operation. Loading: After the loading module 1 transfers the parts to the working range of the handling module 2, it transmits a signal to PLC6. PLC6 then transmits the next automated operation instruction to the handling module 2. The handling robot 21 drives the 3D camera 23 to scan each threaded component 7 on the loading module 1 and compare it with the pre-recorded model information. Part grabbing: After the 3D camera 23 successfully scans the parts, it transmits a signal to PLC6. PLC6 then transmits the next automated operation instruction to the handling module 2, which uses the handling gripper 22 to grab the first threaded component 7. The handling module 2 transfers the first threaded component 7 to the clamping module 3, which clamps the part. The thread assembly operation begins. The transport module 2 picks up the second threaded component 7 from the loading module 1 and delivers the second threaded component 7 to the assembly position (above the first threaded component 7). The clamping module 3 rotates slowly according to the set program. At the same time, the transport module 2 falls slowly according to the set program until the male and female threads between the first threaded component 7 and the second threaded component 7 are connected in place.

[0059] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automated thread assembly device, characterized in that, Used for assembling threaded components, including: A loading module (1) for storing the threaded components; A conveying module (5) for conveying the threaded components; The clamping module (3) is provided on the conveying module (5). The clamping module (3) includes a base (31) that is movable on the conveying module (5) and a clamp (32) that is rotatably provided on the base (31). The central axis of the clamp (32) is arranged in the vertical direction. A transport module (2) is disposed between the feeding module (1) and the conveying module (5). The transport module (2) is configured to drive the threaded component to move between the feeding module (1) and the clamp (32).

2. The threaded automated assembly device according to claim 1, characterized in that, The base (31) includes an internal gear (311), and a column (33) is coaxially rotatably mounted on the internal gear (311). The clamp (32) is fixedly connected to the column (33). A first motor (34) is fixedly mounted relative to the column (33). A first gear (35) is coaxially fixedly mounted on the output shaft of the first motor (34). The first gear (35) meshes with the internal gear (311).

3. The threaded automated assembly device according to claim 2, characterized in that, The clamp (32) includes: Multiple tracks (321) are evenly spaced around the column (33) along the circumferential direction, and the extension axis of the track (321) intersects the center of the column (33). A gripper (322) is movable and mounted on the track (321); A turntable (323) is coaxially rotatably mounted on the column (33). The upper end of the turntable (323) is adapted to the lower end of the gripper (322). The turntable (323) is configured to drive the gripper (322) to move along the track (321) by rotating the turntable (323).

4. The threaded automated assembly device according to claim 3, characterized in that, A spiral groove (324) is provided at the upper end of the turntable (323), and a protrusion (325) for fitting the spiral groove (324) is provided at the lower end of the gripper (322).

5. The threaded automated assembly device according to claim 4, characterized in that, A second gear (326) is coaxially fixedly mounted on the lower part of the turntable (323), and a second motor (327) is fixedly mounted relative to the column (33). A third gear (328) that meshes with the second gear (326) is coaxially fixedly mounted on the output shaft of the second motor (327).

6. The threaded automated assembly device according to claim 5, characterized in that, A housing (36) is coaxially rotatably disposed on the upper part of the internal gear (311). The housing (36) includes a cylinder (361) and an end cap (362) coaxially fixedly disposed on the top of the cylinder (361). The upper ends of the column (33) and the track (321) are fixedly connected to the end cap (362). A guide groove (363) for accommodating the gripper (322) is provided on the top of the housing (36).

7. The automated thread assembly device according to claim 6, characterized in that, Inspection ports (364) are provided on the side wall of the cylinder (361) at positions corresponding to the first motor (34) and the second motor (327), and baffles (365) are provided on the inspection ports (364).

8. The threaded automated assembly device according to any one of claims 1 to 7, characterized in that, The transport module (2) includes a transport robot (21) and a transport gripper (22) disposed at the end of the transport robot (21).

9. The threaded automated assembly device according to claim 8, characterized in that, A 3D camera (23) is installed on the handling gripper (22).

10. The threaded automated assembly device according to any one of claims 1 to 7, characterized in that, A pressing module (4) is provided on the conveying module (5). The threaded automatic assembly device also includes a PLC (6), which is electrically connected to the feeding module (1), the handling module (2), the clamping module (3), the pressing module (4), and the conveying module (5).

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