Pipe bending clamp

Abstract

The utility model provides a pipe bending clamp. The pipe bending clamp comprises a guide rod, a supporting plate, a fixing assembly, a first limiting plate and a second limiting plate. And the guide rod is fixedly connected with a swing arm of the bending machine. The supporting plate is provided with a first penetrating hole. The fixing assembly is connected with the supporting plate, a second penetrating hole is formed in the fixing assembly, and the guide rod penetrates through the first penetrating hole and the second penetrating hole. The first limiting plate is fixed to one side of the supporting plate, the first limiting plate is arranged above the first penetrating hole, the first limiting plate is provided with a first inclined face, and the first inclined face is perpendicularly provided with a first limiting column. The second limiting plate is parallel to the first limiting plate, the second limiting plate is located above the first limiting plate, the second limiting plate is provided with a second inclined plane, the second inclined plane is parallel to the first inclined plane, and a second limiting column is vertically arranged on the face, away from the first limiting plate, of the second limiting plate; the distance between the first limiting column and the supporting plate is smaller than that between the second limiting column and the supporting plate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of pipe processing equipment, in particular to a pipe bending clamp. BACKGROUND

[0002] In the industrial field, heat exchangers are indispensable core equipment, which are responsible for transferring heat between fluids, and their functions cannot be replaced by other equipment. Among the many types of heat exchangers, tubular heat exchangers are widely used due to their simple structure and strong adaptability. The traditional tubular heat exchanger is mainly composed of two end plates and a plurality of straight tubes with fins. These finned tubes are connected between the end plates to form a continuous circulation channel.

[0003] The tubular heat exchanger of the related art usually uses Figure 1 The integrated bent pipe shown in the figure replaces the traditional heat exchange pipe, reduces the welding position required in the assembly process of the heat exchanger, thereby improving the assembly efficiency and air tightness, and reducing the maintenance difficulty.

[0004] However, Figure 1 The integrated bent pipe shown in the figure includes a plurality of continuous straight pipe segments and bent pipe segments. The bending point is determined depending on the experience of the operator, which makes it difficult to keep the lengths L1 and L2 of any two straight pipe segments consistent, resulting in that the integrated bent pipe cannot be installed at the predetermined position of the tubular heat exchanger, thereby reducing the overall assembly efficiency. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a pipe bending clamp for improving the bending accuracy of finned tubes.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] A pipe bending clamp includes:

[0008] A guide rod is fixedly connected with a swing arm of a bending machine;

[0009] A support plate is provided with a first through hole;

[0010] A fixing assembly is connected with the support plate, the fixing assembly is provided with a second through hole, and the guide rod is respectively threaded through the first through hole and the second through hole;

[0011] A first limiting plate is fixed on one side of the support plate, the first limiting plate is arranged above the first through hole, the first limiting plate is provided with a first inclined surface, and the first inclined surface is vertically provided with a first limiting column;

[0012] A second limiting plate is arranged in parallel with the first limiting plate, and is located above the first limiting plate. The second limiting plate is provided with a second inclined surface arranged in parallel with the first inclined surface. The side of the second limiting plate facing away from the first limiting plate is provided with a second limiting column arranged perpendicularly. The axial direction of the first limiting column and the axial direction of the second limiting column are both arranged in parallel with the support plate. The distance between the first limiting column and the support plate is smaller than the distance between the second limiting column and the support plate.

[0013] In one of the embodiments, the support plate is provided with a mounting hole located above the first through hole. One end of the first limiting plate is formed with a mounting protrusion matched with the mounting hole, and the mounting protrusion is arranged in the mounting hole.

[0014] In one of the embodiments, the second limiting plate is fixedly connected with the first limiting column.

[0015] In one of the embodiments, the fixing assembly comprises a fixing sleeve, and the fixing sleeve is in sliding connection with the guide rod.

[0016] In one of the embodiments, the fixing sleeve is provided with an adjusting piece, and the outer wall of the fixing sleeve is provided with an adjusting hole. The adjusting piece is arranged in the adjusting hole, and the adjusting piece is in abutment with the outer wall of the guide rod.

[0017] In one of the embodiments, the first limiting column is located at the middle position of the first limiting plate, and the second limiting column is located at the edge of the second limiting plate away from the support plate.

[0018] In one of the embodiments, the fixing assembly further comprises a clamping plate. One side of the clamping plate is connected with the support plate, and the other side of the clamping plate is connected with one end of the fixing sleeve.

[0019] In one of the embodiments, the first limiting plate is in welded connection with the support plate, the first limiting plate is welded with the first limiting column, the second limiting plate is welded with the support plate, and the second limiting plate is welded with the second limiting column.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] The pipe bending clamp ensures that the length of the straight pipe section formed each time is consistent by arranging the second limiting column before and after the first limiting column, so as to ensure that each straight pipe section after bending meets the assembly requirements, thereby improving the assembly efficiency. In addition, during the bending process, the bending machine and the pipe bending clamp cooperate to support the two ends of the pipe, so as to avoid the inclination of the pipe during the bending process, and further improve the bending precision.

[0022] In the first bending, the fixed assembly can adjust the fixed position of the pipe bending clamp on the guide rod, so as to ensure the length of the straight pipe section of the integrated bending pipe. In the bending process, the pipe end abuts against the first limiting column, so as to ensure the accuracy of the starting bending position and improve the bending accuracy. At the same time, the second limiting plate provides further limiting for the pipe, so as to avoid the inclination or disengagement of the pipe from the pipe bending clamp and further improve the bending accuracy.

[0023] In the second bending process, the second limiting column provides angle guidance, so as to ensure that the angles between the bending positions of the integrated bending pipe after bending meet the assembly requirements. Specifically, in the processing of the second bending position, the first bending position is hooked on the second limiting column, so as to ensure that the angle between the first bending position and the second inclined surface of the clamp on the horizontal ground is the preset bending angle. In this way, the same operation is performed on the subsequent bending positions to meet the assembly standards of the pipe heat exchanger. In addition, in the bending process, the second limiting column cooperates with the support plate to provide axial limiting for the pipe, so as to prevent the axial deviation of the pipe. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 It is a structural schematic diagram of an integrated bending pipe;

[0026] Figure 2 It is Figure 1 It is a real photo of the integrated bending pipe shown;

[0027] Figure 3 It is a real photo of the bending integrated pipe;

[0028] Figure 4 It is a structural schematic diagram of the pipe bending clamp of an embodiment;

[0029] Figure 5 It is Figure 4 It is a structural schematic diagram of the support plate of the pipe bending clamp shown;

[0030] Figure 6 It is Figure 4 It is a structural schematic diagram of the first limiting plate of the pipe bending clamp shown;

[0031] Figure 7 It is a real photo of the pipe bending machine. DETAILED DESCRIPTION

[0032] For the purpose of clarity, the present disclosure will be described with reference to the accompanying drawings. The preferred embodiments of the present disclosure are illustrated in the drawings. However, the present disclosure can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art.

[0033] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and are not intended to limit the present disclosure.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] In order to make the technical scheme and beneficial effects of the present disclosure more comprehensible, the present disclosure will be further described in detail below in conjunction with specific embodiments:

[0036] Please refer to Figures 1 to 7The pipe bending clamp 10 of the utility model one embodiment comprises a guide rod 100, a support plate 200, a fixing assembly 300, a first limiting plate 400 and a second limiting plate 500. The guide rod 100 is fixedly connected with the swing arm of the bending machine. In the embodiment, the guide rod 100 is welded and fixed on the swing arm of the bending machine. The support plate 200 is provided with a first through hole 201. The fixing assembly 300 is connected with the support plate 200, and the fixing assembly 300 is provided with a second through hole 301, and the guide rod 100 is respectively arranged in the first through hole 201 and the second through hole 301. The first limiting plate 400 is fixed on one side of the support plate 200, and the first limiting plate 400 is arranged above the first through hole 201, and the first limiting plate 400 is provided with a first inclined surface 410, and the first inclined surface 410 is vertically provided with a first limiting column 420. The second limiting plate 500 is fixed on one side of the support plate 200, and the second limiting plate 500 is arranged above the through hole 201, and the second limiting plate 500 is arranged in parallel with the first limiting plate 400, and the second limiting plate 500 is arranged above the first limiting plate 400, and the second limiting plate 500 is provided with a second inclined surface 510, and the second inclined surface 510 is arranged in parallel with the first inclined surface 410, and the second limiting plate 500 is vertically provided with a second limiting column 520 on the side away from the first limiting plate 400, and the axial direction of the first limiting column 420 and the axial direction of the second limiting column 520 are both arranged in parallel with the support plate 200, and the distance between the first limiting column 420 and the support plate 200 is less than the distance between the second limiting column 520 and the support plate 200.

[0037] In the embodiment, the pipe bending clamp 10 is provided with the second limiting column 520 and the first limiting column 420 in front and back, so that the length of the straight pipe section formed by each bending is consistent, thereby ensuring that each straight pipe section after bending meets the assembly requirement, and the assembly efficiency is improved. In addition, in the bending process, the bending machine and the pipe bending clamp cooperate to support the two ends of the pipe, so that the pipe is prevented from tilting in the bending process, and the bending accuracy is further improved.

[0038] In one bending, the fixing position of the pipe bending clamp 10 on the guide rod 100 can be adjusted through the fixing assembly 300, so that the length of the straight pipe section of the integrated bending pipe is ensured, and in the bending process, the end of the pipe abuts against the first limiting column 420, so that the accuracy of the initial bending position is ensured. The bending accuracy is improved. Meanwhile, the second limiting plate 520 further limits the pipe, so that the pipe is prevented from tilting or separating from the pipe bending clamp 10, and the bending accuracy is further improved.

[0039] In the process of the second bending, the second limiting column 520 provides angle guidance, ensuring that the angles between the bending parts of the integrated bent pipe after bending meet the assembly requirements. Specifically, when processing the second bending part, the first bending part is hooked on the second limiting column 520, ensuring that the fixture of the first bending part and the horizontal ground is the inclination angle of the second inclined surface 510, that is, the preset bending angle. Similarly, the same operation is performed on the subsequent bending parts to meet the assembly standards of the pipe heat exchanger. In addition, in the bending process, the second limiting column 520 cooperates with the support plate 200 to provide axial limiting for the pipe material, preventing the pipe material from being axially offset.

[0040] As shown in Figure 5 one of the embodiments, the support plate 200 is provided with a mounting hole 202 above the first through hole 201. One end of the first limiting plate 400 is formed with a mounting protrusion 430 matched with the mounting hole 202, and the mounting protrusion 430 is arranged in the mounting hole 202. Specifically, in this embodiment, the first limiting plate 400 is fixedly connected with the support plate 200 along the circumference of the mounting hole 202, ensuring that the connection between the first limiting plate 400 and the support plate 200 is firm and reliable. The cooperation between the mounting protrusion 430 and the mounting hole 202 further enhances the stability of the pipe bending fixture 10 structure, prevents the pipe material from being displaced due to the vibration of the limiting plate during the bending process, and ensures the bending precision.

[0041] As shown in Figure 2 one of the embodiments, the second limiting plate 500 is fixedly connected with the first limiting column 420. Specifically, in this embodiment, one end of the second limiting plate 500 is fixedly connected with the support plate 200, and the other end of the second limiting plate 500 is fixedly connected with the first limiting column 420. In this way, the supporting force of the second limiting plate 500 can be enhanced, preventing the limiting plate from loosening during the bending process and ensuring the stability and precision of the pipe bending.

[0042] As shown in Figure 2 one of the embodiments, the fixing assembly 300 includes a fixing sleeve 310, and the fixing sleeve 310 is slidably connected with the guide rod 100.

[0043] As shown in Figure 2 one of the embodiments, the fixing sleeve 310 is provided with an adjusting piece 311, and the outer wall of the fixing sleeve 310 is provided with an adjusting hole 3101. The adjusting piece 311 is arranged in the adjusting hole 3101, and the adjusting piece 311 abuts against the outer wall of the guide rod 100.

[0044] It can be understood that the guide rod 100 is respectively arranged in the support plate 200 and the fixing sleeve 310, and the fixing sleeve 310 is used to set the fixed position of the support plate 200 on the guide rod 100. Specifically, when the adjusting part 311 is screwed, the adjusting part 311 is abutted with the outer wall of the guide rod 100 to provide a friction force to lock the fixing sleeve 310 on the guide rod 100; when the adjusting part 311 is loosened, the fixing sleeve 310 can be unlocked, so that the support plate 200 is slid along the axial direction of the guide rod 100 by rotating the fixing sleeve 310, and the flexible adjustment of the fixed position of the support plate 200 is realized to adapt to the bending requirements of different pipes. At the same time, the cooperation of the fixing sleeve 310 and the adjusting part 311 can improve the positioning accuracy of the support plate 200 on the guide rod 100, so that the pipe bending clamp 10 does not deviate or shake during the bending process, and the accuracy of the included angle between the bending parts after bending is ensured.

[0045] As shown in Figures 2 to 5 one of the embodiments, the first limiting column 420 is located at the middle position of the first limiting plate 400, and the second limiting column 520 is located at the edge of the second limiting plate 500 away from the support plate 200. It can be understood that the first limiting column 420 is used to abut against the pipe port during the first bending to provide an initial support point and confirm the accuracy of the first bending position and the straight pipe length. In the second bending, the bent pipe segment formed by bending is hooked on the second limiting column 520, and by setting the second limiting column 520 at the edge of the second limiting plate 500, the consistency of the lengths of any two straight pipe segments is ensured.

[0046] As shown in Figure 2 one of the embodiments, the fixing assembly 300 further includes a clamping plate 320, one side of the clamping plate 320 is connected with the support plate 200, and the other side of the clamping plate 320 is connected with the fixing sleeve 310. Specifically, in this embodiment, the clamping plate 320 is integrally formed with the fixing sleeve 310, the clamping plate 320 can increase the contact area of the fixing assembly 300 and the support plate 200, reduce local stress concentration, improve the clamping force and the stability of the overall structure, and avoid damage to the support plate 200 or the fixing sleeve 310 due to excessive local pressure.

[0047] As shown in Figure 2 one of the embodiments, the first limiting plate 400 is welded with the support plate 200, the first limiting plate 400 is welded with the first limiting column 420, the second limiting plate 500 is welded with the support plate 200, and the second limiting plate 500 is welded with the second limiting column 520. It can be understood that the first limiting plate 400 and the second limiting plate 500 are both welded with the support plate 200 along the periphery of the corresponding mounting hole 202, and the limiting column is welded and fixed with the limiting plate, so that the specific position of the limiting column can be determined according to actual needs and the stability thereof is ensured, displacement caused by insecure welding is avoided, and the accuracy of the bending process and the quality of the pipe are further ensured.

[0048] Compared with the prior art, the present disclosure has at least the following advantages:

[0049] The pipe bending clamp ensures that the length of the straight pipe section formed each time is consistent by arranging the second limiting column before and after the first limiting column, and ensures that each straight pipe section and the bent pipe section after bending meet the assembly requirements, thereby improving the assembly efficiency. In addition, in the bending operation, the bending machine and the pipe bending clamp cooperate to support the two ends of the pipe, avoiding the pipe from tilting during the bending process, and further improving the bending accuracy.

[0050] In one bending, the fixed assembly can adjust the fixed position of the pipe bending clamp on the guide rod, thereby ensuring the length of the straight pipe section of the integrated bending pipe. During the bending process, the end of the pipe abuts against the first limiting column, ensuring the accuracy of the initial bending position and improving the bending accuracy. At the same time, the second limiting plate provides more limiting for the pipe, avoiding the pipe from tilting or separating from the pipe bending clamp, and further improving the bending accuracy.

[0051] During the second bending process, the second limiting column provides angle guidance to ensure that the angles between the bending positions of the integrated bending pipe meet the assembly requirements. Specifically, when processing the second bending position, the first bending position is hooked on the limiting column, ensuring that the angle between the first bending position and the inclined surface of the clamp on the horizontal ground is the preset bending angle. Similarly, the same operation is performed on the subsequent bending positions to meet the assembly standards of the pipe heat exchanger. In addition, during the bending process, the second limiting column cooperates with the support plate to provide axial limiting for the pipe, preventing the pipe from being axially offset.

[0052] The above-described embodiments only express several embodiments of the present disclosure, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the disclosed patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, which are within the scope of protection of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A pipe bending jig characterized by comprising: Include: The guide rod is fixedly connected with the swing arm of the bending machine; The support plate is provided with a first through hole; The fixing assembly is connected with the support plate, and the fixing assembly is provided with a second through hole, and the guide rod is respectively arranged in the first through hole and the second through hole; The first limiting plate is fixed on one side of the support plate, the first limiting plate is arranged above the first through hole, the first limiting plate is provided with a first inclined surface, and the first inclined surface is vertically provided with a first limiting column; The second limiting plate is arranged in parallel with the first limiting plate, and the second limiting plate is arranged above the first limiting plate; the second limiting plate is provided with a second inclined surface, the second inclined surface is arranged in parallel with the first inclined surface, the second limiting plate is provided with a second limiting column on the side away from the first limiting plate, the axial direction of the first limiting column and the axial direction of the second limiting column are arranged in parallel with the support plate, and the distance between the first limiting column and the support plate is less than the distance between the second limiting column and the support plate.

2. The pipe bending fixture of claim 1, wherein, The support plate is provided with a mounting hole, the mounting hole is located above the first through hole, one end of the first limiting plate forms a mounting protrusion matched with the mounting hole, and the mounting protrusion is arranged in the mounting hole.

3. The pipe bending fixture of claim 1, wherein, The second limiting plate is fixedly connected with the first limiting column.

4. The pipe bending fixture of claim 1, wherein, The fixing assembly comprises a fixing sleeve, and the fixing sleeve is in sliding connection with the guide rod.

5. The pipe bending fixture of claim 4, wherein, An adjusting piece is arranged on the fixing sleeve, an adjusting hole is formed in the outer wall of the fixing sleeve, the adjusting piece is arranged in the adjusting hole, and the adjusting piece abuts against the outer wall of the guide rod.

6. The pipe bending fixture of claim 1, wherein, The first limiting column is located at the middle position of the first limiting plate, and the second limiting column is located at the edge of the second limiting plate away from the support plate.

7. The pipe bending fixture of claim 4, wherein, The fixing assembly further comprises a clamping plate, one side of the clamping plate is connected with the support plate, and the other side of the clamping plate is connected with one end of the fixing sleeve.

8. The pipe bending fixture of claim 1, wherein, The first limiting plate is welded to the support plate, the first limiting plate is welded to the first limiting column, the second limiting plate is welded to the support plate, and the second limiting plate and the second limiting column are welded.

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