Straightening device for local bending position of titanium tube

Abstract

The utility model discloses a straightening device for a local bending position of a titanium tube, which comprises an operation platform, a supporting component arranged on one side of a tube body and along the radial direction of the tube body, and a deformation straightening mechanism arranged on the other side of the tube body and applying opposite acting force to the supporting component. The supporting component is a supporting disc arranged on the operation platform, and a groove attached to the pipe body is formed in the circumferential face of the supporting disc. The deformation straightening structures are adjusting wheels which are symmetrically arranged on the two sides of the supporting disc and provided with grooves. When the straightening device conducts straightening operation on the bent titanium pipe, the pipe body is supported through contact of the supporting component, then radial pressure in the direction of the supporting component is applied to the two sides (ends) of the bent position of the pipe body through the deformation straightening mechanism, then the bent titanium pipe can be driven to be gradually deformed to restore to the linear state, and therefore the straightening operation is completed; the titanium tube forming quality is improved, and subsequent normal use is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of straightening of bent titanium tubes, and particularly to a straightening device for the locally bent position of a titanium tube. Background Art

[0002] Titanium tubes are a type of tubing with characteristics such as light weight, high strength, and excellent mechanical properties. Therefore, the processed titanium tubes are widely used in many fields, such as in heat exchange equipment like shell-and-tube heat exchangers, condensers, evaporators, and conveying pipelines.

[0003] The processing methods of titanium tubes mainly include processes such as extrusion and skew rolling piercing. For the primary titanium tubes formed by processing, in order to further improve the processing accuracy and quality, the titanium tubes can also be subjected to subsequent cold working, hot working, cutting, drilling and machining, chemical processing, etc. After processing, the titanium tubes also need to be heat-treated to improve their mechanical properties and corrosion resistance, and surface treatment such as polishing, sandblasting, pickling, etc. to increase their aesthetic appearance and corrosion resistance.

[0004] Currently, after the primary titanium tubes are formed, during subsequent processing such as polishing, the surface of the titanium tubes is usually polished by a polishing machine. The specific polishing method is to clamp the titanium tube and then move the polishing wheel along the axial direction of the titanium tube to achieve the polishing operation on the surface of the titanium tube under rotational contact. Since the titanium tube has a hollow tube structure, when its designed wall thickness is relatively thin, under the contact action of the polishing wheel, it is easy to cause the bending of the titanium tube; and during the polishing operation, it is necessary to adjust the polishing depth of the polishing wheel. When manually adjusting, if the single polishing depth is relatively large, the "extrusion" effect on the titanium tube will be caused by the polishing wheel, which will also cause the bending of the titanium tube, thereby affecting the forming quality of the titanium tube and its subsequent use. Summary of the Invention

[0005] Aiming at the above existing problems, this application aims to provide a straightening device for the locally bent position of a titanium tube, which can conveniently complete the straightening operation of the bent titanium tube, improve the forming quality of the titanium tube, and ensure its normal subsequent use.

[0006] To achieve the above object, the technical solution adopted in this application is as follows: A straightening device for the locally bent position of a titanium tube, characterized in that: the straightening device includes an operation platform, on which a support member located on one side of the tube body and along the radial direction of the tube body is provided, and further includes a deformation straightening mechanism provided on the other side of the tube body and applying an opposite acting force to the support member.

[0007] Preferably, the support member is a support disc provided on the operation platform, and a groove for fitting the tube body is provided on the circumferential surface of the support disc.

[0008] Preferably, the deformation straightening mechanism is an adjusting wheel symmetrically arranged on both sides of the support disk and having the groove, and each adjusting wheel is displaceably adjustable towards the support disk.

[0009] Preferably, a positioning wheel having the same structure as the adjusting wheel is further provided corresponding to the support disk.

[0010] Preferably, rectangular frames for passing through the pipe body are further provided on both sides of the operation platform, and a limiting cavity having the same height as the outer diameter of the pipe body is formed in the rectangular frame.

[0011] The beneficial effect of the present application is that when the straightening device straightens the bent titanium pipe, the pipe body is supported by contacting through the supporting member, and then the deformation straightening mechanism applies a radial pressure towards the supporting member on both sides (ends) of the bent position of the pipe body, so as to drive the bent titanium pipe to gradually deform and return to a straight state, thereby completing the straightening operation, improving the forming quality of the titanium pipe, and ensuring normal subsequent use. Description of the Drawings

[0012] Figure 1 It is a structural diagram of the bent titanium pipe of the present application.

[0013] Figure 2 It is a top view structural diagram of the straightening device of the present application.

[0014] Figure 3 It is a diagram showing the straightening effect of the bent titanium pipe assembled on the straightening device of the present application.

[0015] Figure 4 For the present application Figure 3 It is a diagram showing the axial displacement of the titanium pipe during straightening in the present application.

[0016] Figure 5 It is a diagram showing the setting of the positioning wheel to limit the axial displacement and circumferential flipping of the titanium pipe in the present application.

[0017] Figure 6 It is a diagram showing the setting of the rectangular frame to limit the circumferential flipping of the titanium pipe in the present application.

[0018] In the figure: 1a - chute; 6 - adjusting bolt; 70 - bent titanium pipe. Detailed Embodiments

[0019] In order to enable those of ordinary skill in the art to better understand the technical solution of the present application, the technical solution of the present application will be further described below with reference to the drawings and embodiments.

[0020] Refer to the attached Figures 1-6A straightening device for the local bending position of a titanium tube is shown. The straightening device includes an operation platform 1. On the operation platform 1, there is a support component located on one side of the tube body and along the radial direction of the tube body, and further includes a deformation straightening mechanism arranged on the other side of the tube body and applying an opposite acting force to the support component. When straightening the bent titanium tube, place the titanium tube on the operation platform 1, and make the arc center point of the bent part (the outside of the tube body) contact the support component to achieve the support of the tube body (as Figure 3 shown), then apply a radial pressure towards the support component to both sides (ends) of the bent position of the tube body through the deformation straightening mechanism ( Figure 3 shown by the arrow a in), thereby driving the bent titanium tube to gradually deform and return to a straight state, thus completing the straightening operation, improving the forming quality of the titanium tube, and ensuring normal subsequent use.

[0021] Specifically, as Figure 3 shown, the support component is a support disc 2 arranged on the operation platform 1, and a groove 2a fitting the tube body is provided on the circumferential surface of the support disc 2. During operation, embed the tube body into the groove 2a of the support disc 2 to achieve the radial support on one side of the tube body, and at the same time achieve an effective limiting effect on the tube body, avoiding the problem of the tube body detaching from the support disc 2 when applying the corrective acting force subsequently. Then, through the opposite radial drive of the following deformation straightening mechanism, the straightening operation can be completed. The groove 2a can also increase the contact area with the side wall of the tube body, avoiding the problem of the outer wall of the tube body being sunken due to the overly concentrated contact force between the support disc 2 and the outer wall of the tube body during the subsequent straightening process.

[0022] Specifically, as Figures 2-3 shown, the deformation straightening mechanism is an adjusting wheel 3 symmetrically arranged on both sides of the support disc 2 and having the groove 2a, and each adjusting wheel 3 is displaceably adjustable towards the support disc 2. The adjusting structure of the adjusting wheel 3 includes a chute opened on the operation platform 1, and the rotating shaft of the adjusting wheel 3 is slidably embedded in the chute, and an adjusting bolt for driving the rotating shaft to shift in the chute is arranged on the operation platform 1. During operation, by rotating the adjusting bolt, its end drives the rotating shaft and the adjusting wheel 3 to slide in the chute, thereby applying a radial straightening acting force to the bent part of the tube body based on the support of the support disc 2, making the bent part of the tube body gradually deform and return to a straight state.

[0023] Since the adjusting wheel 3 does not contact and interfere with the support disc 2, the adjusting wheel 3 can be further driven to "excessively" drive the tube body to deform to eliminate the bending stress existing in the tube body.

[0024] During the process of straightening the tube body by driving the adjusting wheel 3, due to the tube body being in a bent state, there will be an axial displacement under the straightening acting force ( Figure 4in the direction indicated by the arrow), so to achieve axial limitation of the pipe body during the straightening process, as Figure 5 shown, a positioning wheel 4 with the same structure as the adjusting wheel 3 is also provided corresponding to the support disc 2. The positioning wheel 4 is driven by a corresponding adjusting bolt to contact and support the midpoint of the arc section on the inner side of the bent part of the pipe body, and together with the support disc 2 on the other side, clamps the bent part of the pipe body. Since the bent part to be straightened is an arc structure, it cannot move axially in a straight line within the space formed by the support disc 2 and the positioning wheel 4. Therefore, when an external straightening force is applied through the adjusting wheel 3, the axial displacement of the pipe body can be effectively restricted. At the same time, the positioning wheel 4 supports at the midpoint position of the bent part, enabling the adjusting wheels 3 on both sides to apply the same magnitude of force synchronously, avoiding the problem of the pipe body being bent again due to inconsistent magnitudes of the adjusting forces on both sides.

[0025] During the above straightening process, when the adjusting wheel 3 applies a force, since the pipe body is in a bent state, it will rotate circumferentially ( Figure 5 in the direction indicated by the arrow), and thus an effective straightening effect cannot be achieved. Therefore, to solve this problem, as Figure 6 shown, rectangular frames 5 through which the pipe body passes are also provided on both sides of the operation platform 1, and a limiting cavity 5a with a height equal to the outer diameter of the pipe body is opened in the rectangular frame 5. Since the height of the limiting cavity 5a is equal to the outer diameter of the pipe body, and the surface height of the (bent) pipe body will increase when it flips, the rectangular frame 5 can limit the flipping of the pipe body to achieve an effective straightening effect.

[0026] The principle of this application is: when straightening a bent titanium pipe, first pass the pipe body through the limiting cavity 5a of the rectangular frames 5 on both sides and move it in the limiting cavity 5a so that one side of the pipe body is embedded in the groove 2a of the support disc 2. Then drive the positioning wheel 4 to contact the other side of the pipe body, and together with the support disc 2, clamp and limit the pipe body. Then rotate the adjusting bolt to drive the adjusting wheels 3 on both sides to contact both sides of the bent part of the pipe body and apply a straightening force, so that the pipe body gradually deforms and returns to a straight state, thus completing the straightening operation of the pipe body.

[0027] The above shows and describes the basic principle, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will have various changes and improvements, and these changes and improvements all fall within the scope of this application claimed.

Claims

1. A device for straightening a local bending position of a titanium tube, characterized in that: The straightening device comprises an operating platform (1), on which a support component is arranged on one side of the tube body and along the radial direction of the tube body, and a deformation straightening mechanism is arranged on the other side of the tube body and applies a force in opposite directions to the support component.

2. The straightening device according to claim 1, characterized in that: The supporting component is a supporting disc (2) arranged on the operating platform (1), and a groove (2a) fitting the tube body is provided on the circumference of the supporting disc (2).

3. The straightening device according to claim 2, characterized in that: The deformation straightening mechanism is an adjusting wheel (3) symmetrically arranged on both sides of the supporting disc (2) and having the groove (2a), and each of the adjusting wheels (3) is displaceably adjustable toward the supporting disc (2).

4. The straightening device according to claim 3, characterized in that: A positioning wheel (4) having the same structure as the adjusting wheel (3) is also provided corresponding to the supporting disc (2).

5. The straightening device according to claim 4, characterized in that: Rectangular frames (5) passing through the tube body are also provided on both sides of the operating platform (1), and a limiting cavity (5a) having a height equal to the outer diameter of the tube body is provided in the rectangular frame (5).

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