Die for local hole shrinkage of metal pipe
By designing a metal pipe partial shrinkage mold including a workbench, bracket, cylinder, mold wheel and robot, the problem that existing molds are difficult to accurately handle the intermediate parts of the pipeline is solved, and the accurate and stable shrinkage of the metal pipe is achieved.
Patent Information
- Application Number
- CN202421687531.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-17
AI Technical Summary
Existing metal pipe shrinkage molds have difficulty in precisely handling local areas in the middle of the pipe, limiting applications on long pipes and lack of sufficient support to lead to unstable operation.
A mold for partial shrinkage of metal pipes is designed, including a workbench, bracket, cylinder, mold wheel and robot. The cylinder and mold wheel are driven by a screw driver to achieve accurate shrinkage of the metal pipes and provide stable support through fixed plates, movable rings and limiting chutes.
It realizes accurate diameter shrinkage at specific locations of metal pipes, and is flexible and applicable, ensuring the stability and accuracy of the diameter shrinkage process, and is suitable for the local diameter shrinkage requirements of long pipes.
Smart Images
Figure CN222902397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal pipe processing, and specifically refers to a die for local necking of metal pipes. Background Technique
[0002] Metal pipe necking dies are mainly used to reduce the diameter of one end of a metal pipe so as to connect it to another pipe or component with a smaller diameter. Such tools are common in pipeline engineering and metal processing for making pipe connections, pipe fittings or specific-shaped metal structures. Through a metal pipe necking die, the reduction of the pipe diameter can be precisely controlled to ensure the sealing and stability of the connection part.
[0003] Metal pipe necking dies are currently mainly applied at the pipe ends because most necking is for the convenience of connection. However, sometimes local necking is required in the middle of the pipe to meet specific requirements such as cross arrangement or flow rate control, which requires more flexible equipment. Existing necking equipment is difficult to precisely process the local area in the middle of the pipe, which limits its application on long pipes. In addition, long pipes lack sufficient support during the necking process, which may lead to unstable operation or poor quality. Content of the Utility Model
[0004] In order to solve the above various problems, the utility model proposes a die for local necking of metal pipes, which can neck a specific part of a metal pipe and provide good support force when necking a longer metal pipe.
[0005] To solve the above technical problems, the technical solution proposed by the utility model is: a die for local necking of metal pipes, including a workbench, a bracket is connected above the workbench, cylinders are connected below the workbench and above the bracket, the cylinders are driven by screw drives fixed on the workbench and the bracket, mold wheels are arranged on both cylinders, the mold wheels are connected to the cylinders through connecting frames, the two mold wheels are relatively arranged between the workbench and the bracket, through grooves for the cylinders to pass through are arranged on the workbench and the bracket, a fixing plate and a movable ring are respectively arranged on both sides of the through groove above the workbench, the fixing plate and the movable ring are respectively fixed and slidably arranged on the workbench, a turntable and a rotating ring are respectively rotatably connected to the fixing plate and the movable ring, a manipulator for fixing a metal pipe is connected to the turntable and the rotating ring, and the turntable is driven by a motor fixed on the workbench.
[0006] Further, the connecting frame includes a C-shaped frame fixedly connected to the cylinder, a rotating shaft is rotatably connected to the C-shaped frame, and the mold wheel is fixedly arranged in the middle of the rotating shaft.
[0007] Based on the above features, the C-shaped frame cooperates with the rotating shaft to stably fix the mold wheel and at the same time facilitate its rotation to realize the necking of the metal pipe.
[0008] Furthermore, the two screw rod drivers work synchronously, and the two cylinders work synchronously.
[0009] Based on the above features, it can be ensured that the two die wheels are always aligned, thereby realizing effective and precise necking of the metal pipe.
[0010] Furthermore, a sliding rod is connected and arranged below the movable ring, a limiting sliding groove for cooperating with the sliding rod is arranged on the workbench, and the lower end of the sliding rod is slidably arranged in the limiting sliding groove.
[0011] Based on the above features, the limiting sliding groove can ensure the stable sliding of the movable ring along with the sliding rod, thereby realizing the stable support of the metal pipe.
[0012] Furthermore, a plurality of the manipulators are provided and arranged at uniform intervals.
[0013] Based on the above features, the plurality of uniformly arranged manipulators can realize the stable fixation of the metal pipe.
[0014] Furthermore, a scale parallel to the through groove is arranged on the workbench near the through groove.
[0015] Based on the above features, the scale facilitates the accurate measurement of the necking position of the metal pipe.
[0016] The advantages of the present utility model compared with the prior art are as follows: The die wheel can move under the action of the screw rod driver, thereby realizing the necking treatment of specific positions of the metal pipe, which is flexible and convenient, and has a wide application range. The setting of the scale helps to control the accuracy of the necking position of the metal pipe. The fixed plate and the movable ring can effectively support the metal pipe, and cooperate with a plurality of manipulators to stably support and fix the metal pipe, thereby ensuring its stability during the necking process and realizing precise necking. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a perspective view of the present utility model;
[0018] Figure 2 is a front view of the present utility model;
[0019] Figure 3 is a side view of the present utility model;
[0020] Figure 4 is a top view of the present utility model.
[0021] As shown in the figure: 1. Workbench; 2. Bracket; 3. Cylinder; 4. Screw rod driver; 5. Die wheel; 6. Fixed plate; 7. Movable ring; 8. Turntable; 9. Rotating ring; 10. Manipulator; 11. Motor; 12. C-shaped frame; 13. Rotating shaft; 14. Sliding rod; 15. Limiting sliding groove; 16. Scale. Detailed implementation mode
[0022] The following further describes the present utility model in detail with reference to the accompanying drawings.
[0023] Combined with the attached Figure 1 and the attached Figure 2 A die for local necking of a metal pipe includes a workbench 1. A bracket 2 is connected above the workbench 1. Cylinders 3 are connected below the workbench 1 and above the bracket 2. The cylinders 3 are driven by screw drives 4 fixed on the workbench 1 and the bracket 2. Die wheels 5 are arranged on both cylinders 3. The die wheels 5 are connected to the cylinders 3 through connecting frames. The connecting frame includes a C-shaped frame 12 fixedly connected to the cylinder 3. A rotating shaft 13 is rotatably connected to the C-shaped frame 12. The die wheel 5 is fixedly arranged in the middle of the rotating shaft 13. The C-shaped frame 12 and the rotating shaft 13 can stably fix the die wheel 5 and at the same time facilitate its rotation to realize the necking of the metal pipe.
[0024] Combined with the attached Figure 1 The two die wheels 5 are relatively arranged between the workbench 1 and the bracket 2. Through grooves for the cylinders 3 to pass through are provided on the workbench 1 and the bracket 2. The two screw drives 4 work synchronously, and the two cylinders 3 work synchronously, which can ensure that the two die wheels 5 are always aligned, thereby realizing effective and precise necking of the metal pipe.
[0025] Combined with the attached Figure 1 and the attached Figure 4 Above the workbench 1, a fixed plate 6 and a movable ring 7 are respectively arranged on both sides of the through groove. The fixed plate 6 and the movable ring 7 are respectively fixed and slidably arranged on the workbench 1. A sliding rod 14 is connected below the movable ring 7. A limiting sliding groove 15 for cooperating with the sliding rod 14 is provided on the workbench 1. The lower end of the sliding rod 14 is slidably arranged in the limiting sliding groove 15. The limiting sliding groove 15 can ensure the stable sliding of the movable ring 7 along with the sliding rod 14, thereby realizing the stable support of the metal pipe.
[0026] Combined with the attached Figure 1 and the attached Figure 3 and the attached Figure 4 On the fixed plate 6 and the movable ring 7, a turntable 8 and a rotating ring 9 are respectively rotatably connected. A manipulator 10 for fixing the metal pipe is connected to the turntable 8 and the rotating ring 9. The turntable 8 is driven by a motor 11 fixed on the workbench 1. A plurality of manipulators 10 are provided and arranged at equal intervals. The uniformly arranged plurality of manipulators 10 can realize the stable fixation of the metal pipe. A scale 16 parallel to the through groove is provided on the workbench 1 near the through groove. The scale 16 is convenient for accurately measuring the necking position of the metal pipe.
[0027] Specific embodiments of the present utility model: Connect the mold to an external power source. Insert one end of the metal tube successively through the rotating ring 9 and the movable ring 7 until the end of the metal tube contacts and presses tightly against the turntable 8. Control the manipulator 10 to operate so that it clamps and fixes the end of the metal tube and the position near the rotating ring 9. Control the lead screw driver 4 to operate so that it drives the cylinder 3 to move. The mold wheel 5 moves along with the cylinder 3. Combine with the scale 16 to control the mold wheel 5 to move to a suitable position so that it aligns with the position of the metal tube to be necked down. Turn on the motor 11. The motor 11 drives the turntable 8 to rotate. The turntable 8 drives the metal tube to rotate. At the same time, the rotating ring 9 rotates in cooperation. Control the cylinder 3 to make the two mold wheels 5 gradually approach the metal tube. After the mold wheels 5 contact the rotating metal tube, continue to move, and the necking down of the metal tube can be achieved. During the process, the metal tube will drive the movable ring 7 to slide due to the elongation caused by necking down, and further make the sliding rod 14 slide in the limit chute 15. Control the descending height of the mold wheel 5 according to the required necking down size of the metal tube. For example, if the metal tube needs to be necked down by 2 cm, then after the two mold wheels 5 contact the metal tube, make them continue to move 1 cm towards the metal tube.
[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; for those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be understood according to specific situations.
[0029] The above describes the present utility model and its embodiments. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the creative purpose of the present utility model, without creative design, structures and embodiments similar to the technical solution are all within the protection scope of the present utility model.
Claims
1. A die for partial diameter reduction of a metal tube, comprising a workbench (1), characterized in that: A support (2) is connected to the top of the workbench (1), and a cylinder (3) is connected to the bottom of the workbench (1) and the top of the support (2). The cylinder (3) is driven by a screw driver (4) fixed to the workbench (1) and the support (2). The two cylinders (3) are each provided with a mold wheel (5), and the mold wheel (5) is connected to the cylinder (3) via a connecting frame. The two mold wheels (5) are arranged relatively between the workbench (1) and the support (2). The workbench (1) and the support (2) are provided with A through slot is provided for the cylinder (3) to pass through, and a fixed plate (6) and a movable ring (7) are respectively provided on both sides of the through slot above the workbench (1), and the fixed plate (6) and the movable ring (7) are respectively fixedly and slidably provided on the workbench (1), and a turntable (8) and a rotating ring (9) are respectively rotatably connected on the fixed plate (6) and the movable ring (7), and a manipulator (10) for fixing a metal pipe is connected on the turntable (8) and the rotating ring (9), and the turntable (8) is driven by a motor (11) fixed on the workbench (1).
2. A die for partial diameter reduction of a metal tube according to claim 1, characterized in that: The connecting frame comprises a C-shaped frame (12) fixedly connected to the cylinder (3); a rotating shaft (13) is rotatably connected to the C-shaped frame (12); and the mold wheel (5) is fixedly arranged in the middle of the rotating shaft (13).
3. A die for partial diameter reduction of a metal tube according to claim 1, characterized in that: The two screw drives (4) work synchronously, and the two cylinders (3) work synchronously.
4. A die for partial diameter reduction of a metal tube according to claim 1, characterized in that: A sliding rod (14) is connected to the lower part of the movable ring (7), and a limiting sliding groove (15) matching the sliding rod (14) is provided on the workbench (1), and the lower end of the sliding rod (14) is slidably arranged in the limiting sliding groove (15).
5. The die for partial diameter reduction of a metal tube according to claim 1, characterized in that: The robot arms (10) are provided in plurality and are evenly spaced.
6. A die for partial diameter reduction of a metal tube according to claim 1, characterized in that: A scale (16) parallel to the through slot is provided on the workbench (1) near the through slot.