Metal pipe stretching device

Abstract

The utility model belongs to the technical field of metal pipe machining, and particularly relates to a metal pipe stretching device which comprises a rack, a fixing assembly is arranged on one side of the rack, and a heating mechanism is fixedly connected between one side of the fixing assembly and a feeding frame. A feeding mechanism is arranged on the front face of the feeding frame, and a stretching mechanism is fixedly installed in the rack. Wherein the stretching mechanism comprises a fixed table and a second fixer, and a hydraulic rod is fixedly connected between the fixed table and the sliding seat; the second fixer comprises a fixing frame, a two-way screw rod and a connecting seat, a second air cylinder is fixedly mounted in the fixing frame, and the second air cylinder drives the connecting seat to linearly move on the surface of the two-way screw rod, so that the two-way screw rod drives the fixing seat to move towards the outer side through a connecting arm. Under the action of the first fixer and the second fixer, the two ends of the pipe can be automatically fixed, so that manual reinforcement is not needed, and the pipe stretching efficiency is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of metal pipe processing technology, and specifically relates to a metal pipe stretching device. Background Technology

[0002] Metal pipes, also known as steel pipes, are used for transporting fluids and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, and are also an economical type of steel. The development of the chemical industry, as well as the drilling and transportation of oil and natural gas, have strongly promoted the development of the steel pipe industry in terms of variety, output, and quality.

[0003] Problems with existing technology:

[0004] The prior art, CN104007017B, discloses a "Metal Pipe Tensioning Device" which "includes an assembly bracket and a tensioning structure. The tensioning structure includes a first connecting rod, a second connecting rod, a first buffer member, and a second buffer member. The first and second buffer members respectively include an annular buffer structure and a buffer joint. A fixing rod is provided on one side of the buffer joint. The fixing rod is perpendicular to the annular buffer structure. One end of the annular buffer structure is sleeved on the fixing rod, and the fixing rod is suitable for relative movement along the inner part of the annular buffer structure. A liquid inlet is also provided on the metal pipe specimen, and the liquid inlet is connected to a pressurized injection device."

[0005] When using the pipe stretching device described above, the fixing of both ends of the pipe requires manual operation, which makes the use of the device time-consuming and labor-intensive. In addition, since the device does not have a pipe feeding structure, manual feeding is required, and it does not have a pipe preheating structure, resulting in low pipe stretching efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a metal pipe stretching device that can solve the problems of low stretching efficiency caused by the need for manual fixing of both ends of the pipe and the lack of convenient feeding and preheating structures during pipe stretching.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A metal tube stretching device includes a frame, a fixing component is provided on one side of the frame, and a heating mechanism is fixedly connected between one side of the fixing component and a feeding rack.

[0009] The front of the feeding rack is provided with a feeding mechanism, and a tensioning mechanism is fixedly installed inside the frame.

[0010] The tensioning mechanism includes a fixed platform and a second fixture, and a hydraulic rod is fixedly connected between the fixed platform and the sliding seat.

[0011] The second fixture includes a fixed frame, a bidirectional screw, and a connecting seat. A second cylinder is fixedly installed inside the fixed frame. The second cylinder drives the connecting seat to move linearly on the surface of the bidirectional screw, so that the bidirectional screw drives the fixed seat to move outward through the connecting arm.

[0012] The fixing component is disposed between the frame and the heating mechanism, and the feeding mechanism is rotatably mounted to the feeding frame.

[0013] The fixed platform is fixedly installed with the frame, the sliding seat is slidably installed with the frame, and the hydraulic rod pushes the sliding seat to drive the second fixture to move horizontally.

[0014] The fixed frame and the second cylinder are arranged concentrically and fixedly installed with the sliding seat.

[0015] The bidirectional screw is rotatably installed inside the fixed frame, the bottom of the connecting arm is hinged to both the fixed frame and the connecting seat, and the top of the connecting arm is slidably installed to the fixed seat.

[0016] The fixing component includes a frame and a lifting cylinder. A sliding seat is slidably installed inside the frame. The lifting cylinder pushes the sliding seat to drive the first fixing device to move vertically in sync. The first fixing device and the second fixing device have the same structure and are arranged in a mirror image.

[0017] The heating mechanism includes a housing, a controller is fixedly installed on the top of the housing, and an electromagnetic induction coil is installed inside the housing, with both ends of the electromagnetic induction coil fixedly installed to the controller.

[0018] The feeding mechanism includes a mounting base and a first cylinder. A feeding bracket is rotatably mounted on the surface of the mounting base, and the first cylinder is used to push the feeding bracket to swing.

[0019] The technical effects achieved by this utility model are as follows:

[0020] This invention utilizes a fixed platform installed inside the frame, with a hydraulic rod between the fixed platform and the sliding seat. Activation of the hydraulic rod pushes the sliding seat, causing the second fixing device to move towards one end of the pipe. Simultaneously, a lifting cylinder is installed inside the frame. Under the action of the lifting cylinder, the moving seat moves the first fixing device downwards. When the second fixing device descends to be concentric with the pipe, the hydraulic rod pushes the sliding seat to move, causing the second fixing device to push the other end of the pipe onto the outside of the first fixing device. By activating the second cylinders inside the first and second fixing devices respectively, the connecting seat moves on the surface of the bidirectional screw, causing the bidirectional screw to rotate. Due to the movement of the connecting seat, the fixing seat moves outwards under the action of the connecting arm, thus abutting against the inside of the pipe. This allows for automatic fixing of both ends of the pipe, effectively improving the pipe's stretching efficiency.

[0021] This invention utilizes a heating mechanism located on one side of a fixed component, with a controller mounted on the top of the housing containing an electromagnetic induction coil. The controller activates the electromagnetic induction coil, allowing preheating of the pipe as it passes through the heating mechanism, thus improving subsequent stretching efficiency. Furthermore, a feeding bracket is rotatably mounted on one side of the feeding rack via a mounting base. One end of the first cylinder is hinged to the feeding rack, and the other end is also hinged to the feeding bracket. Therefore, simply pushing the pipe onto the feeding bracket and activating the first cylinder allows the pipe to automatically enter the feeding rack, making it more convenient, time-saving, and labor-saving compared to manual feeding. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the overall installation structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the tensioning mechanism in this utility model;

[0024] Figure 3 This is a schematic diagram of the installation structure of the second fixture in this utility model;

[0025] Figure 4 This is a utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 5 This is a schematic diagram of the installation structure of the fixing component and heating mechanism in this utility model;

[0027] Figure 6 This is a schematic diagram of the installation structure of the feeding mechanism in this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Frame; 2. Fixing assembly; 21. Frame; 22. Movable seat; 23. First fixture; 24. Lifting cylinder; 3. Heating mechanism; 31. Housing; 32. Controller; 33. Electromagnetic induction coil; 4. Feeding rack; 5. Feeding mechanism; 51. Mounting seat; 52. First cylinder; 53. Feeding bracket; 6. Tensioning mechanism; 61. Fixed platform; 62. Sliding seat; 63. Hydraulic rod; 64. Second fixture; 641. Fixed frame; 642. Bidirectional screw; 643. Connecting arm; 644. Fixed seat; 645. Connecting seat; 646. Second cylinder. Detailed Implementation

[0030] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0031] like Figure 1-6 As shown, a metal tube stretching device includes a frame 1, a fixing component 2 is provided on one side of the frame 1, and a heating mechanism 3 is fixedly connected between one side of the fixing component 2 and the feeding rack 4.

[0032] The front of the feeding rack 4 is provided with a feeding mechanism 5, and the inside of the frame 1 is fixedly installed with a tensioning mechanism 6;

[0033] The tensioning mechanism 6 includes a fixed platform 61 and a second fixture 64, and a hydraulic rod 63 is fixedly connected between the fixed platform 61 and the sliding seat 62.

[0034] The second fixture 64 includes a fixing frame 641, a bidirectional screw 642, and a connecting seat 645. A second cylinder 646 is fixedly installed inside the fixing frame 641. The second cylinder 646 drives the connecting seat 645 to move linearly on the surface of the bidirectional screw 642, so that the bidirectional screw 642 drives the fixing seat 644 to move outward through the connecting arm 643.

[0035] See attached document Figure 1 In this embodiment, the fixing component 2 is disposed between the frame 1 and the heating mechanism 3, and the feeding mechanism 5 is rotatably installed with the feeding rack 4.

[0036] In the above embodiment, the fixing component 2 can work with the tensioning mechanism 6 to fix the pipe from both ends, and the tensioning mechanism 6 can stretch the pipe.

[0037] See attached document Figure 1-4 In this embodiment, the fixed platform 61 is fixedly installed with the frame 1, the sliding seat 62 is slidably installed with the frame 1, and the hydraulic rod 63 pushes the sliding seat 62 to drive the second fixture 64 to move horizontally.

[0038] In the above embodiment, since a hydraulic rod 63 is provided between the sliding seat 62 and the fixed platform 61, and the output shaft of the hydraulic rod 63 is fixedly connected to the fixed platform 61, when the hydraulic rod 63 is started, since the fixed platform 61 is fixed, the sliding seat 62 can drive the second fixture 64 to move, thereby realizing the stretching process of the pipe.

[0039] Furthermore, a fixed frame 641 and a second cylinder 646 are fixedly installed on one side of the sliding seat 62, and the fixed frame 641 and the second cylinder 646 are arranged concentrically. Therefore, when the second cylinder 646 is started, it can drive the connecting seat 645 to move on the surface of the bidirectional screw 642.

[0040] Furthermore, since the bidirectional screw 642 is rotatably installed inside the fixed frame 641 and there are two sets of connecting seats 645, when the surface of one set of connecting seats 645 moves, the bidirectional screw 642 can rotate, thereby driving the other set of connecting seats 645 to move synchronously in opposite directions.

[0041] It is worth noting that, since the bottom of the connecting arm 643 is hinged to the fixed frame 641 and the connecting seat 645 respectively, and the top of the connecting arm 643 is slidably installed with the fixed seat 644, the fixed seat 644 can move outward during the movement of the connecting seat 645, thereby abutting against the inner wall of the pipe and fixing the pipe.

[0042] See attached document Figure 1 and Figure 5 In this embodiment, the fixing component 2 includes a frame 21 and a lifting cylinder 24. A movable seat 22 is slidably installed inside the frame 21. The lifting cylinder 24 pushes the movable seat 22 to drive the first fixing device 23 to move vertically in sync. The first fixing device 23 and the second fixing device 64 have the same structure and are arranged in a mirror image.

[0043] In the above embodiment, a reinforcing rib is installed inside the frame 21, and the lifting cylinder 24 can push the moving seat 22 to slide on the surface of the reinforcing rib, while driving the first fixing device 23 to move synchronously. Therefore, when the first fixing device 23 moves to the same level as the second fixing device 64, it can cooperate with the second fixing device 64 to clamp and fix both ends of the pipe.

[0044] Specifically, one side of the frame 21 is connected to the heating mechanism 3, which can preheat the metal tube to improve the efficiency of tube stretching. The specific structure and function of the heating mechanism 3 are described and introduced in detail below.

[0045] According to the above structure, the heating mechanism 3 includes a housing 31, a controller 32 is fixedly installed on the top of the housing 31, and an electromagnetic induction coil 33 is provided inside the housing 31. The two ends of the electromagnetic induction coil 33 are fixedly installed with the controller 32.

[0046] The housing 31 is fixedly installed with the frame 21, and the controller 32 installed on the top of the housing 31 can control the start and stop of the electromagnetic induction coil 33. The electromagnetic induction coil 33 is arranged in a ring spiral inside the housing 31. Therefore, the pipe can be heated when it passes through the electromagnetic induction coil 33, which facilitates the stretching of the pipe.

[0047] See attached document Figure 1 and Figure 6 In this embodiment, the feeding mechanism 5 includes a mounting base 51 and a first cylinder 52. A feeding bracket 53 is rotatably mounted on the surface of the mounting base 51, and the first cylinder 52 is used to push the feeding bracket 53 to swing.

[0048] In the above embodiment, the mounting base 51 is fixedly installed with the feeding rack 4, and the first cylinder 52 is hinged to the feeding rack 4. At the same time, the output shaft of the first cylinder 52 is hinged to the feeding bracket 53. Therefore, when the first cylinder 52 is started, the feeding bracket 53 can be moved to send the pipe into the interior of the feeding rack 4.

[0049] The working principle of this utility model is as follows: By pushing the pipe onto the surface of the feeding bracket 53, the first cylinder 52 is activated to make the feeding bracket 53 swing upward under the action of the mounting seat 51, thereby allowing the pipe to enter the interior of the feeding rack 4. By pushing the pipe towards the heating mechanism 3, when one end of the pipe passes through the fixing component 2, the hydraulic rod 63 is activated to make the sliding seat 62 drive the second fixing device 64 to move into the interior of one end of the pipe. When the second cylinder 646 is activated, the connecting seat 645 moves on the surface of the bidirectional screw 642, thereby causing the fixing seat 644 to move outward under the action of the connecting arm 643, and then abut against the inner wall of the pipe. After that, the controller 32 and the electromagnetic induction line are activated. When the pipe is pulled towards the frame 1 by the hydraulic rod 63, the lifting cylinder 24 is activated to lower the moving seat 22 and the first fixing device 23 to the concentric position of the pipe. Then, the other end of the pipe is fitted onto the surface of the first fixing device 23 by the hydraulic rod 63. By activating the first fixing device 23 in the same way as the second fixing device 64, both ends of the pipe can be fixed. After the fixing is completed, the pipe can be stretched by activating the hydraulic rod 63 to achieve the stretching process of the metal pipe. After the stretching is completed, the pipe can be sent back into the loading rack 4 under the action of the second fixing device 64 and the hydraulic rod 63, which facilitates the unloading.

[0050] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A metal tube stretching device, characterized in that, include: A frame (1) is provided with a fixing component (2) on one side of the frame (1), and a heating mechanism (3) is fixedly connected between one side of the fixing component (2) and the feeding rack (4). The front of the feeding rack (4) is provided with a feeding mechanism (5), and the inside of the frame (1) is fixedly installed with a tensioning mechanism (6). The tensioning mechanism (6) includes a fixed platform (61) and a second fixture (64), and a hydraulic rod (63) is fixedly connected between the fixed platform (61) and the sliding seat (62). The second fixture (64) includes a fixing frame (641), a bidirectional screw (642), and a connecting seat (645). A second cylinder (646) is fixedly installed inside the fixing frame (641). The second cylinder (646) drives the connecting seat (645) to move linearly on the surface of the bidirectional screw (642), so that the bidirectional screw (642) drives the fixing seat (644) to move outward through the connecting arm (643).

2. The metal tube stretching device according to claim 1, characterized in that: The fixing component (2) is disposed between the frame (1) and the heating mechanism (3), and the feeding mechanism (5) is rotatably installed with the feeding rack (4).

3. The metal tube stretching device according to claim 1, characterized in that: The fixed platform (61) is fixedly installed with the frame (1), the sliding seat (62) is slidably installed with the frame (1), and the hydraulic rod (63) pushes the sliding seat (62) to drive the second fixture (64) to move horizontally.

4. The metal tube stretching device according to claim 1, characterized in that: The fixed frame (641) and the second cylinder (646) are arranged concentrically and fixedly installed with the sliding seat (62).

5. The metal tube stretching device according to claim 1, characterized in that: The bidirectional screw (642) is rotatably mounted inside the fixed frame (641), the bottom of the connecting arm (643) is hinged to the fixed frame (641) and the connecting seat (645) respectively, and the top of the connecting arm (643) is slidably mounted to the fixed seat (644).

6. The metal tube stretching device according to claim 1, characterized in that: The fixing component (2) includes a frame (21) and a lifting cylinder (24). A movable seat (22) is slidably installed inside the frame (21). The lifting cylinder (24) pushes the movable seat (22) to drive the first fixing device (23) to move vertically in sync. The first fixing device (23) and the second fixing device (64) have the same structure and are arranged in a mirror image.

7. The metal tube stretching device according to claim 1, characterized in that: The heating mechanism (3) includes a housing (31), a controller (32) is fixedly installed on the top of the housing (31), and an electromagnetic induction coil (33) is provided inside the housing (31). The two ends of the electromagnetic induction coil (33) are fixedly installed with the controller (32).

8. The metal tube stretching device according to claim 1, characterized in that: The feeding mechanism (5) includes a mounting base (51) and a first cylinder (52). A feeding bracket (53) is rotatably mounted on the surface of the mounting base (51). The first cylinder (52) is used to push the feeding bracket (53) to swing.

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