Thin-wall stainless steel composite pipe straightening equipment

Abstract

The utility model discloses a thin-wall stainless steel composite pipe straightening device which comprises an operation table, the length direction of the operation table serves as the first direction, at least three clamping mechanisms are arranged on the operation table in the first direction, and the clamping mechanism located in the middle is arranged on the operation table in a lifting mode. The clamping mechanism comprises a mounting ring and an air bag circumferentially arranged on the inner circumferential face of the mounting ring, and the air bag is connected with an inflation and deflation mechanism. The multiple clamping mechanisms clamp the two ends and the middle of the bent section of the pipe correspondingly, acting force is applied to the bent section of the pipe through lifting of the clamping mechanism in the middle, and the pipe is straightened; after being inflated, the air bag wraps the periphery of the pipe from the periphery, uniform pressure applying on the periphery of the pipe groove is achieved, firstly, the stress area of the pipe is increased, the probability of local deformation of the pipe is reduced, secondly, through uniform pressure applying in the circumferential direction, the probability that the pipe is flattened in the straightening process is reduced, and it is guaranteed that the quality of the pipe is stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the technical field of straightening equipment, and in particular relates to a straightening equipment for thin-walled stainless steel composite pipes. Background Technology

[0002] A straightening machine is a device designed to detect and straighten shafts and rods that have bent or deformed after heat treatment.

[0003] Patent CN217369853U discloses a straightening machine that applies pressure to a workpiece through a straightening mechanism to achieve straightening. In this straightening machine, the pressure applied to the workpiece by the straightening mechanism is concentrated on a small area on one side of the workpiece. When straightening thin-walled stainless steel composite pipes, because the outer wall of the stainless steel composite pipe is thin, the excessively concentrated pressure will cause local indentation and deformation of the pressure-bearing part of the stainless steel composite pipe. Furthermore, the pressure is concentrated on one side of the stainless steel composite pipe, and the stainless steel composite pipe is easily flattened during the extrusion process, resulting in an elliptical cross-section, which affects the quality of the stainless steel composite pipe.

[0004] Therefore, it is necessary to improve the existing straightening equipment. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a straightening device for thin-walled stainless steel composite pipes, thereby improving the straightening effect of thin-walled stainless steel composite pipes.

[0006] To achieve the above objectives, the specific technical solution of the thin-walled stainless steel composite pipe straightening equipment of this utility model is as follows:

[0007] A thin-walled stainless steel composite pipe straightening device includes an operating table, with the length of the operating table as a first direction. At least three clamping mechanisms are arranged on the operating table along the first direction, with the middle clamping mechanism being lifted and lowered on the operating table. Each clamping mechanism includes a mounting ring and an airbag circumferentially disposed on the inner circumferential surface of the mounting ring. The airbag is connected to an inflation / deflation mechanism.

[0008] Preferably, the mounting ring includes an inner layer and an outer layer arranged coaxially, the inner layer and the outer layer are fixedly connected to each other to form a sealed interlayer space, the inner layer has a plurality of vent holes evenly distributed to connect the interlayer space and the airbag, and the outer layer is provided with an air inlet pipe.

[0009] Preferably, the airbag has a ring structure and is uniformly covered on the inner circumferential surface of the inner layer.

[0010] Preferably, the air intake pipe is provided with multiple pipes at equal intervals around the centerline of the outer layer.

[0011] Preferably, the mounting ring is provided with at least three positioning components, each of which is circumferentially distributed at equal intervals around the center line of the mounting ring, and the positioning components are used to adjust the coaxial state of the pipe and the mounting ring.

[0012] Preferably, the positioning component includes a distance sensor and a cylinder, wherein the orientation of the detection end of the distance sensor and the movement direction of the extension end of the cylinder are both radial to the mounting ring.

[0013] Preferably, the telescopic end of the cylinder is provided with a guide wheel.

[0014] Preferably, the middle clamping mechanism is connected to the operating table via a lifting power component, and the remaining clamping mechanisms are all provided with a translation seat, which is slidably disposed on the operating table along a first direction.

[0015] Preferably, the operating table has a guide groove extending in a first direction, the translation seat has a slider that slides with the guide groove, and the translation seat is threaded with a locking screw.

[0016] Preferably, the mounting ring is rotatably mounted on the translation seat via a bearing.

[0017] The thin-walled stainless steel composite pipe straightening equipment of this utility model has the following advantages: multiple clamping mechanisms clamp the two ends and the middle part of the pipe bending section respectively. By lifting and lowering the middle clamping mechanism, a force is applied to the pipe bending section to achieve pipe straightening; after the airbag is inflated, it wraps around the outer periphery of the pipe to achieve uniform pressure around the pipe groove. First, it increases the stress area of ​​the pipe and reduces the probability of local deformation of the pipe. Second, by applying uniform pressure in the circumference, it reduces the probability of the pipe being flattened during the straightening process, so as to ensure the stable and reliable quality of the pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the straightening equipment of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the translation seat and the clamping mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the clamping mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the mounting ring of this utility model;

[0023] Figure 6This is a cross-sectional view of the clamping mechanism of this utility model;

[0024] The markings in the diagram are as follows: 1. Operating table; 2. Translation seat; 3. Clamping mechanism; 101. Guide groove; 102. Hydraulic cylinder; 201. Slider; 202. Bearing; 203. Locking screw; 301. Mounting ring; 302. Cylinder; 303. Air inlet pipe; 304. Distance sensor; 305. Guide wheel; 306. Airbag; 307. Vent hole; 308. Interlayer space. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the straightening equipment and are only for the purpose of facilitating the description of this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figure 1 and 4 As shown, a thin-walled stainless steel composite pipe straightening device includes an operating table 1. The length direction of the operating table 1 is the first direction. At least three clamping mechanisms 3 are arranged on the operating table 1 along the first direction. The clamping mechanism 3 located in the middle is lifted and lowered on the operating table 1. The clamping mechanism 3 includes a mounting ring 301 and an airbag 306 circumferentially disposed on the inner circumferential surface of the mounting ring 301. The airbag 306 is connected to an inflation and deflation mechanism.

[0028] The above-mentioned straightening equipment is suitable for straightening pipes. In view of the characteristic that thin-walled pipes are easily deformed under pressure, a clamping mechanism 3 is set to reduce the probability of deformation at the stress point of the thin-walled pipe during the straightening process. During the pipe straightening process, the stress point usually includes two support parts located at both ends of the bending section and a squeezing part located in the middle of the bending section.

[0029] When using this straightening equipment, the pipe is passed through each clamping mechanism 3 in sequence and both ends are fixed. The bending state of the pipe is detected by the detection component on the operating table 1. The detection component can be a laser sensor or an ultrasonic sensor. After the detection is completed, the clamping mechanism 3 in the middle is fixed to the bending part of the pipe. The clamping mechanism 3 in the middle is driven to rise and fall, and the bending part of the pipe is squeezed in the opposite direction, thereby straightening the pipe.

[0030] Compared with existing straightening equipment, the clamping mechanism 3 of this straightening equipment clamps and fixes the pipe by inflating the airbag 306, which then circumferentially wraps around the outer periphery of the pipe. Firstly, this increases the stress-bearing area of ​​the pipe, reducing the pressure on the outer wall and lowering the probability of local deformation. Secondly, the airbag 306, circumferentially wrapping around the pipe, applies pressure in the opposite direction to the pipe's axis around the fixing point, thus preventing deformation during the straightening and pressing process. The uniform pressure on the inside keeps the pipe in a round shape, reducing the chance of the pipe being flattened, thereby improving the quality of the pipe after leveling. Furthermore, the airbag 306 can be adjusted in terms of softness and hardness by controlling the inflation volume, which means that the maximum pressure exerted by the airbag 306 on the pipe can be controlled. By setting this maximum pressure to be less than the maximum pressure that the pipe can withstand, the deformation of the airbag 306 can protect the pipe, further reducing the chance of the pipe deforming due to excessive force, and further improving the quality of the pipe after leveling.

[0031] Further improvements include, for example Figure 5 and 6 As shown, the mounting ring 301 includes an inner layer and an outer layer arranged coaxially. The inner and outer layers are fixedly connected to each other to form a sealed interlayer space 308. The inner layer has multiple vent holes 307 evenly distributed, connecting the interlayer space 308 and the airbag 306. The outer layer is provided with an air inlet pipe 303. In this straightening device, the air inlet pipe 303 is connected to an external air pump, which inflates and deflates the interlayer space 308. A valve can also be installed on the air inlet pipe 303. Closing the valve after inflation can maintain the pressure inside the interlayer space 308. The air entering the interlayer space 308 is evenly injected into the airbag 306 through the vent holes 307, thereby achieving synchronous inflation of the airbag 306 and making the expansion of the airbag 306 uniform. Ultimately, this makes the pressure exerted by the airbag 306 on the outer periphery of the pipe more uniform and balanced, further reducing the probability of pipe deformation during the straightening process.

[0032] Further improvements include, for example Figure 6 As shown, the airbag 306 has a ring-shaped structure and is evenly covered on the inner circumferential surface of the inner layer. The ring-shaped airbag 306 is conducive to uniform distribution on the inner circumferential surface of the mounting ring 301. After expansion, it can reduce the probability of local over-expansion of the airbag 306, thereby allowing the airbag 306 to evenly wrap around the outer circumference of the pipe and apply uniform pressure to the pipe, thus reducing the probability of pipe deformation.

[0033] Further improvements include, for example Figure 5As shown, multiple air intake pipes 303 are evenly spaced around the centerline of the outer layer. The arrangement of multiple air intake pipes 303 can make the inflation speed more uniform throughout the interlayer space 308, thereby allowing the airflow to enter the airbag 306 more evenly and synchronously, making the expansion speed of the airbag 306 consistent throughout, and ultimately making the pressure exerted by the airbag 306 on the outer periphery of the pipe more uniform, reducing the probability of deformation of the pipe due to uneven stress.

[0034] Further improvements include, for example Figure 4 As shown, the mounting ring 301 is provided with at least three positioning components. These components are evenly distributed circumferentially around the centerline of the mounting ring 301. The positioning components are used to adjust the coaxiality of the pipe and the mounting ring 301. This ensures that after the airbag 306 fixes the pipe, the airbag expands uniformly around its perimeter, resulting in more even pressure distribution on the outer circumference of the pipe and reducing the likelihood of deformation due to uneven stress.

[0035] Further improvements include, for example Figure 4 As shown, the positioning assembly includes a distance sensor 304 and a cylinder 302. The orientation of the detection end of the distance sensor 304 and the direction of movement of the telescopic end of the cylinder 302 are both radial to the mounting ring 301. The telescopic end of the cylinder 302 is provided with a guide wheel 305. The distance sensor 304 can detect the distance between the pipe and the outer circumference of the mounting ring 301 from different positions, thereby detecting the coaxial state between the pipe and the mounting ring 301. Then, in cooperation with the cylinder 302, the pipe is pushed from different directions, ultimately adjusting the position of the pipe to make it coaxial with the mounting ring 301.

[0036] Further improvements include, for example Figure 1 As shown, the middle clamping mechanism 3 is connected to the operating table 1 via a lifting power component. The remaining clamping mechanisms 3 are each equipped with a translation seat 2, which slides on the operating table 1 along a first direction. The lifting power component is a hydraulic cylinder 102, with one clamping mechanism 3 at its lifting end. The remaining clamping mechanisms 3 are slidably mounted on the top surface of the operating table 1, allowing the clamping mechanisms 3 to adjust their positions along the axial direction of the pipe to achieve fixed clamping at different positions of the pipe. This makes it suitable for pipes of different lengths. By controlling the expansion of the air bladder 306, the clamping mechanisms 3 can also clamp pipes of different diameters, improving the practicality of the straightening equipment.

[0037] Further improvements include, for example Figure 1 and 2As shown, the operating table 1 has a guide groove 101 extending along a first direction, and the translation seat 2 has a slider 201 that slides in conjunction with the guide groove 101. The translation seat 2 is threadedly connected with a locking screw 203. The locking screw 203 locks and separates the translation seat 2 from the operating table 1. When separated, the position of the translation seat 2 can be adjusted; when locked, the translation seat 2 can be fixed on the operating table 1. Thus, the translation assembly can be clamped at different positions of the pipe and can also drive the pipe to move axially.

[0038] Further improvements include, for example Figure 3 As shown, the mounting ring 301 is rotatably mounted on the translation seat 2 via the bearing 202. The bearing 202 allows the mounting ring 301 to rotate around its own axis, thereby driving the pipe to rotate around its own axis. By moving and rotating the pipe, the position of the pipe can be adjusted, facilitating the detection of the pipe's bending state and the straightening of the pipe, thus improving the ease of use of the straightening machine.

[0039] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A straightening device for thin-walled stainless steel composite pipes, characterized in that: Includes an operating table (1), with the length direction of the operating table (1) as the first direction, and at least three clamping mechanisms (3) arranged on the operating table (1) along the first direction, with the middle clamping mechanism (3) being raised and lowered on the operating table (1); The clamping mechanism (3) includes a mounting ring (301) and an airbag (306) circumferentially disposed on the inner circumferential surface of the mounting ring (301), and the airbag (306) is connected to an inflation / deflation mechanism.

2. The thin-walled stainless steel composite pipe straightening equipment according to claim 1, characterized in that, The mounting ring (301) includes an inner layer and an outer layer arranged coaxially. The inner layer and the outer layer are fixedly connected to each other to form a closed interlayer space (308). The inner layer has a plurality of vent holes (307) that connect the interlayer space (308) and the airbag (306) evenly distributed. The outer layer is provided with an air inlet pipe (303).

3. The thin-walled stainless steel composite pipe straightening equipment according to claim 2, characterized in that, The airbag (306) has a ring structure and is uniformly covered on the inner circumferential surface of the inner layer.

4. The thin-walled stainless steel composite pipe straightening equipment according to claim 2, characterized in that, The air intake pipe (303) is provided with multiple pipes at equal intervals around the center line of the outer layer.

5. The thin-walled stainless steel composite pipe straightening equipment according to claim 1, characterized in that, At least three positioning components are provided on the mounting ring (301). Each positioning component is circumferentially distributed around the center line of the mounting ring (301) at equal intervals. The positioning components are used to adjust the coaxial state of the pipe and the mounting ring (301).

6. The thin-walled stainless steel composite pipe straightening equipment according to claim 5, characterized in that, The positioning component includes a distance sensor (304) and a cylinder (302), wherein the orientation of the detection end of the distance sensor (304) and the direction of movement of the extension end of the cylinder (302) are both radial to the mounting ring (301).

7. The thin-walled stainless steel composite pipe straightening equipment according to claim 6, characterized in that, The cylinder (302) is equipped with a guide wheel (305) at its telescopic end.

8. The thin-walled stainless steel composite pipe straightening equipment according to claim 1, characterized in that, The middle clamping mechanism (3) of each clamping mechanism (3) is connected to the operating table (1) through a lifting power component. The remaining clamping mechanisms (3) are all provided with a translation seat (2). The translation seat (2) is slidably disposed on the operating table (1) along the first direction.

9. The thin-walled stainless steel composite pipe straightening equipment according to claim 8, characterized in that, The operating table (1) is provided with a guide groove (101) extending in the first direction, the translation seat (2) is provided with a slider (201) that slides in cooperation with the guide groove (101), and the translation seat (2) is threaded with a locking screw (203).

10. The thin-walled stainless steel composite pipe straightening equipment according to claim 8, characterized in that, The mounting ring (301) is rotatably mounted on the translation seat (2) via a bearing (202).

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