Pipe bending tool and pipe bending equipment
By setting positioning holes and U-shaped grooves on the pipe bending fixture, combined with the transition arc surface design, the problem that existing pipe bending fixtures cannot meet the high-precision pipe bending requirements of air conditioning equipment is solved, and high-pass-rate and high-efficiency pipe bending operations are achieved.
Patent Information
- Application Number
- CN202520388621.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing pipe bending fixtures cannot meet the high precision requirements of copper pipe bending in air conditioning equipment, resulting in large deformation and obvious creases at the bends, and a low pass rate.
Design a pipe bending fixture, including a pipe bending operating arm and a pipe bending operating head. The front end of the pipe bending operating head is provided with a positioning hole and a U-shaped groove. The U-shaped groove limits the bending part of the pipe, and combined with the transition arc surface design, it reduces stress and strain and optimizes the pipe bending process.
It improved the pass rate of pipe bending, with a flattening rate of 1.2, meeting the requirements of the production process, reducing creases, and improving the efficiency and consistency of pipe bending operations.
Smart Images
Figure CN223875850U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of machining, specifically relates to a pipe bending tool and pipe bending equipment for pipe bending operation. BACKGROUND
[0002] It is known that pipe materials are widely used in various industrial fields. When used in various application occasions, pipe materials inevitably need to be bent to adapt to application requirements. For example, the suction pipe and exhaust pipe of a compressor usually use metal pipe materials such as copper pipes. The suction pipe and exhaust pipe need to be bent at specific positions at a predetermined angle before assembly. For example, some pipe bending angles are 30-50 degrees obliquely upward, and some pipe bending angles even require 90 degrees vertically upward.
[0003] In the prior art, a conventional sleeve is used as a pipe bending tool, which is sleeved on the pipe to be bent, and the pipe bending operation is completed by moving the sleeve. With the continuous improvement of the energy efficiency requirements of air conditioning equipment, the pipe bending process requirements are becoming more and more stringent. Among them, the bending part cannot have obvious folds and large deformation, and the bending flatness is required to be within 1.4. However, the current pipe bending tool cannot meet this requirement, and the bending flatness is about 1.6. However, the current practical pipe bending tool has a large deformation at the bending part and obvious folds, resulting in a low product qualification rate. UTILITY MODEL CONTENT
[0004] The utility model aims to provide a pipe bending tool and pipe bending equipment to improve the qualification rate and efficiency of pipe bending operation.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.
[0006] In a first aspect, the utility model provides a pipe bending tool, which comprises a pipe bending operation arm and a pipe bending operation head arranged at the front end of the pipe bending operation arm. A positioning hole for positioning the bent part of the pipe is arranged at the front end of the pipe bending operation head. A U-shaped groove with an opening facing forward is arranged on the side wall of the front end of the pipe bending operation head.
[0007] The pipe bending tool has the beneficial effects of limiting the bent part of the pipe by arranging a U-shaped groove on the pipe bending operation head, greatly reducing the stress and strain generated during pipe bending, limiting the transverse deformation during pipe bending, and achieving a bending flatness of 1.2, which meets and is significantly higher than the production process requirements.
[0008] As a preferred technical scheme, a transition arc surface is arranged between the arc-shaped bottom of the U-shaped groove and the inner side wall of the positioning hole.
[0009] The beneficial effect of the above preferred scheme is that by setting the transition arc surface, when the pipe is bent, the arc-shaped bottom of the U-shaped groove is more gentle to the extrusion point of the pipe bending part, which can significantly reduce the fold mark.
[0010] As a preferred technical scheme, the diameter of the U-shaped groove is 1.05-1.15 times the outer diameter of the pipe, and the length of the U-shaped groove is 1.2-1.3 times the outer diameter of the pipe; the diameter of the positioning hole is 1.05-1.15 times the outer diameter of the pipe, and the wall thickness of the side wall of the bending operation head at the position of the positioning hole is 0.3-0.4 mm.
[0011] The beneficial effect of the above preferred scheme is that by setting the above structure parameters, the bending tooling and pipe cooperate and bend as much as possible, while ensuring the strength of the bending operation head.
[0012] As a preferred technical scheme, the positioning hole is a blind hole opened backward from the front end of the bending operation head and located in the bending operation head.
[0013] The beneficial effect of the above preferred scheme is that the positioning hole is a blind hole only opened in the bending operation head, and when the end of the pipe inserted into the positioning hole is stopped at the bottom of the blind hole, the length of the bending part is determined, which can well adapt to the batch processing scene of the shorter and length-determined bending part of the pipe.
[0014] As a preferred technical scheme, the positioning hole is a blind hole opened backward from the front end of the bending operation head and extending into the bending operation arm.
[0015] The beneficial effect of the above preferred scheme is that the positioning hole is a blind hole extending into the bending operation arm, and when the end of the pipe inserted into the positioning hole is stopped at the bottom of the blind hole, the length of the bending part is determined, which can well adapt to the batch processing scene of the longer and length-determined bending part of the pipe.
[0016] As a preferred technical scheme, the positioning hole is a through hole opened backward from the front end of the bending operation head and extending and penetrating the rear end of the bending operation arm, and the rear end of the bending operation arm is provided with an adjusting member matched in the positioning hole and controlling the depth of the positioning hole.
[0017] The beneficial effect of the above preferred scheme is that the positioning hole is a through hole extending and penetrating the rear end of the bending operation arm, and an adjusting member is arranged to adjust the depth of the positioning hole, and when the end of the pipe inserted into the positioning hole is stopped at the adjusting member, the length of the bending part is determined, which can well adapt to the processing scene of the longer and length-adjustable bending part of the pipe.
[0018] As a preferred technical scheme, the adjusting member is a slide column which is slidably matched in the positioning hole of the rear section of the bending operation arm, the positioning hole is provided with a locking hole on the side wall of the section of the bending operation arm, the locking hole is provided with a screw, and the position of the slide column in the positioning hole is determined by radially pressing the adjusting member by the screw.
[0019] The preferred scheme has the beneficial effect that the position of the slide column is adjusted to adjust the depth of the positioning hole, when the end of the pipe inserted in the positioning hole is stopped at the front end of the slide column, the length of the bending part is determined, and the pipe with continuously changing bending part can be switched and processed.
[0020] As a preferred technical scheme, the positioning hole is provided with a plurality of radial screw holes which are axially spaced on the side wall of the section of the bending operation arm, and the adjusting member is a screw which is matched in the screw hole and can be stopped in the interior of the positioning hole.
[0021] The preferred scheme has the beneficial effect that the screw hole is selected in the axial direction and the screw is installed to adjust the depth of the positioning hole, when the end of the pipe inserted in the positioning hole is stopped at the screw, the length of the bending part is determined, and the pipe with several specific lengths of bending part can be switched and processed.
[0022] As a preferred technical scheme, the positioning hole is provided with an internal thread on the inner wall of the section of the bending operation arm, and the adjusting member is a screw rod which is matched in the internal thread, and the screw rod has a control part which extends out of the rear end of the bending operation arm.
[0023] The preferred scheme has the beneficial effect that the position of the screw rod is changed by rotating the screw rod to adjust the depth of the positioning hole, when the end of the pipe inserted in the positioning hole is stopped at the front end of the screw rod, the length of the bending part is determined, and the pipe with continuously changing bending part can be switched and processed.
[0024] As a preferred technical scheme, the bending operation arm and the bending operation head are integrally formed or fixedly connected in a threaded connection mode.
[0025] The preferred scheme has the beneficial effect that when the bending operation arm and the bending operation head are integrally formed, the bending tool has higher strength and more stable structure, and when the bending operation arm and the bending operation head are fixedly connected in a threaded connection mode, the bending operation head can be replaced with bending operation arms of different lengths to provide different operation torques, or the bending operation head can provide positioning holes of different depths through bending operation arms of different lengths.
[0026] The second aspect of the utility model provides a pipe bending equipment, including pipe material main part positioning mechanism, tool driving mechanism and the pipe bending tool described above, the tool driving mechanism drives the pipe bending tool relative to the pipe material main part positioning mechanism swings according to the preset included angle.
[0027] The pipe bending equipment has the advantages that the pipe bending tool can realize automatic pipe bending, and compared with the pipe bending operation arm of the pipe bending tool operated by artificial, the pipe bending equipment has higher efficiency and better consistency. BRIEF DESCRIPTION OF DRAWINGS
[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.
[0029] Figure 1 It is the front view of the pipe bending tool provided by the embodiment of the utility model.
[0030] Figure 2 It is Figure 1 It is the side view of the pipe bending tool.
[0031] Figure 3 It is Figure 1 It is the A-A cross-sectional view of the pipe bending tool.
[0032] Figure 4 It is Figure 1 It is the top view of the pipe bending tool.
[0033] Figure 5 It is Figure 1 It is the matching view of the pipe bending tool inserted into the pipe material.
[0034] Figure 6 It is Figure 1 It is the effect view of the pipe bending tool inserted into the pipe material and completing the pipe bending operation.
[0035] Figure 7 It is the front view of the pipe bending tool provided by the embodiment of the utility model.
[0036] Figure 8 It is Figure 7 It is the B-B cross-sectional view of the pipe bending tool.
[0037] Figure 9 It is Figure 7 It is the side view of the pipe bending tool. DETAILED DESCRIPTION
[0038] The following can be referred to Figures 1-9 The content of the present application and the difference between the present application and the prior art can be understood by the following description, the accompanying drawings and the enumeration of some optional embodiments of the present application. It should be noted that any technical feature or technical solution in the present embodiment is one or several of the optional technical features or technical solutions. In order to describe simply, all the alternative technical features and technical solutions of the present application cannot be listed in the present document, and it is not convenient to emphasize that each technical feature is one of the optional embodiments. Therefore, it should be known by those skilled in the art that any technical means provided by the present application can be replaced or any two or more technical means or technical features provided by the present application can be combined to obtain a new technical solution. Any technical feature and technical solution in the present embodiment does not limit the protection scope of the present application, and the protection scope of the present application should include any alternative technical solution that can be thought of by those skilled in the art without creative labor and the new technical solution obtained by combining any two or more technical means or technical features provided by the present application.
[0039] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0040] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; It can be mechanical connection, or electrical connection; It can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0041] In combination with Figures 1 to 5As shown, the pipe bending tool 100 provided by the embodiment includes a pipe bending operation arm 10 and a pipe bending operation head 20. The pipe bending operation head 20 is arranged at the front end of the pipe bending operation arm 10. A positioning hole 21 is arranged at the front end of the pipe bending operation head 20 and opens rearward. The positioning hole 21 is used for positioning the bending part of the pipe. A U-shaped groove 22 is arranged on the side wall of the front end of the pipe bending operation head 20 and opens forward.
[0042] In use, one end of the pipe 200 is inserted into the positioning hole 21 (as shown in FIG. 2B). The length of the bending part of the pipe is determined by the depth of the positioning hole 21. Then, the pipe bending operation arm 10 is pivoted relative to the main body of the pipe 200 with the arc-shaped bottom of the U-shaped groove 22 as the fulcrum, so that the pipe bending operation arm 10 and the main body of the pipe form a preset included angle. The pipe bending operation head 20 is moved along the pipe bending operation arm 10, and the pipe 200 is bent. Figure 5 Figure 6
[0043] The pipe bending tool 100 provided by the above embodiment limits the bending part of the pipe 200 by arranging the U-shaped groove 22 on the pipe bending operation head. The stress and strain generated during pipe bending are greatly reduced, and the transverse deformation of the bending part of the pipe during pipe bending is limited. Through experiments, the flattening rate of the pipe bending tool 100 provided by the above embodiment can reach 1.2, which meets and is significantly higher than the production process requirements.
[0044] As shown in FIGS. 1A and 1B, the pipe bending tool 100 provided by the above embodiment is used for bending the pipe 200. The pipe 200 is inserted into the positioning hole 21 of the pipe bending operation head 20. The pipe bending operation arm 10 is pivoted relative to the main body of the pipe 200 with the arc-shaped bottom of the U-shaped groove 22 as the fulcrum, so that the pipe bending operation arm 10 and the main body of the pipe form a preset included angle. The pipe bending operation head 20 is moved along the pipe bending operation arm 10, and the pipe 200 is bent. Figure 3 Figure 4 As a preferred embodiment, a transition arc surface 23 is arranged between the arc-shaped bottom of the U-shaped groove 22 and the inner side wall of the positioning hole 21. By arranging the transition arc surface 23, the extrusion point of the arc-shaped bottom of the U-shaped groove 22 on the bending part of the pipe 200 is more gentle when the pipe is bent, and the fold mark can be significantly reduced.
[0045] As a specific embodiment, in the pipe bending tool 100 provided by the above embodiment, the diameter of the U-shaped groove 22 is 1.05-1.15 times the outer diameter of the pipe 200 to be processed, and the length of the U-shaped groove 22 is 1.2-1.3 times the outer diameter of the pipe to be processed. The diameter of the positioning hole 21 is 1.05-1.15 times the outer diameter of the pipe to be processed, and the wall thickness of the side wall of the section of the pipe bending operation head 20 where the positioning hole 21 is located is 0.3-0.4 mm. By arranging the above structural parameters, the pipe bending tool 100 and the pipe 200 are as close as possible during cooperation and pipe bending operation, while the strength of the pipe bending operation head 20 is ensured.
[0046] As an optional embodiment, the positioning hole 21 is a blind hole arranged at the front end of the pipe bending operation head 20 and located in the pipe bending operation head 20. In this way, when the end of the pipe 200 inserted into the positioning hole 21 is stopped at the bottom of the blind hole, the length of the bending part of the pipe is determined. This method is more suitable for batch processing scenarios where the bending part of the pipe is relatively short and the length is determined.
[0047] As an optional embodiment, the positioning hole 21 is a blind hole which is opened and extended rearward from the front end of the pipe bending operation head 20 into the pipe bending operation arm 10. In this way, when the end of the pipe 200 inserted into the positioning hole 21 is stopped at the bottom of the blind hole, the length of the bending part of the pipe is determined, which can well adapt to the batch processing scene where the length of the bending part of the pipe is long and determined.
[0048] As a preferred embodiment, referring to Figures 7 to 9 the drawing, the positioning hole 21 is a through hole which is opened and extended rearward from the front end of the pipe bending operation head 20 and penetrates through the rear end of the pipe bending operation arm 10. The rear end of the pipe bending operation arm 10 is provided with an adjusting member 25 which is fitted into the positioning hole and controls the depth of the positioning hole 21. In this way, when the end of the pipe 200 inserted into the positioning hole 21 is stopped at the adjusting member 25, the length of the bending part of the pipe is determined, which can well adapt to the processing scene where the length of the bending part of the pipe needs to be adjusted at any time.
[0049] As a specific embodiment, the adjusting member 25 is a slide column which is slidably fitted into the positioning hole 21 of the rear section of the pipe bending operation arm 10. The positioning hole 21 is provided with a locking hole on the side wall of the section of the pipe bending operation arm 10. A screw 26 is arranged at the locking hole. After the position of the adjusting member 25 in the positioning hole 21 is determined, the adjusting member 25 is radially pressed by the screw 26, so as to adjust the depth of the positioning hole 21. When the end of the pipe 200 inserted into the positioning hole 21 is stopped at the front end of the slide column, the length of the bending part of the pipe is determined, which can switch the processing of the pipe with continuously changing bending part.
[0050] As an alternative embodiment, the positioning hole 21 is provided with a plurality of radial screw holes axially spaced on the side wall of the section of the pipe bending operation arm 10. The adjusting member is a screw which is fitted into the screw hole and can be stopped inside the positioning hole. In this way, by selecting the appropriate screw hole in the axial direction and installing the screw, the depth of the positioning hole 21 is adjusted. When the end of the pipe inserted into the positioning hole is stopped at the screw, the length of the bending part of the pipe is determined, which can switch the processing of the pipe with several specific lengths of bending part.
[0051] As another alternative embodiment, the positioning hole 21 is provided with an internal thread on the inner wall of the section of the pipe bending operation arm 10. The adjusting member is a screw rod which is fitted into the internal thread. The screw rod has a control part which extends out of the rear end of the pipe bending operation arm 10. In this way, by rotating the screw rod, the position of the screw rod is changed, so as to adjust the depth of the positioning hole. When the end of the pipe inserted into the positioning hole is stopped at the front end of the screw rod, the length of the bending part of the pipe is determined, which can switch the processing of the pipe with continuously changing bending part.
[0052] In the pipe bending tool 100, the pipe bending operation arm 10 is integrally formed with the pipe bending operation head 20 or fixedly connected with the pipe bending operation head 20 in a threaded connection mode. When the pipe bending operation arm 10 is integrally formed with the pipe bending operation head 20, the pipe bending tool 100 has higher strength and more stable structure. When the pipe bending operation arm 10 is fixedly connected with the pipe bending operation head 20 in the threaded connection mode, the pipe bending operation head 20 can be replaced with pipe bending operation arms 10 of different lengths to provide different operation torques or provide positioning holes 21 of different depths through pipe bending operation arms of different lengths.
[0053] The embodiment also provides a pipe bending device including a pipe body part positioning mechanism, a tool driving mechanism and the pipe bending tool described above. The tool driving mechanism drives the pipe bending tool to swing relative to the pipe body part positioning mechanism at a preset clamping angle. The pipe bending device can realize automatic pipe bending by using the pipe bending tool described above, and has higher efficiency and better consistency compared with a pipe bending operation arm of a pipe bending tool operated manually.
[0054] The utility model discloses not limited to the above-mentioned embodiment, the skilled person in the art can also make equivalent modification or replacement without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined in the claims of the present application.
Claims
1. A pipe bending tool characterized by, The elbow operating arm and the elbow operating head arranged at the front end of the elbow operating arm, the front end of the elbow operating head is backwardly provided with a positioning hole for positioning the elbow of the pipe; a U-shaped slot is arranged on the side wall of the front end of the elbow operating head.
2. The tube bending fixture of claim 1, wherein, An arc transition surface is arranged between the arc-shaped bottom of the U-shaped slot and the inner side wall of the positioning hole.
3. The tube bending fixture of claim 1, wherein, The positioning hole is a blind hole arranged at the front end of the elbow operating head and located in the elbow operating head.
4. The tube bending fixture of claim 1, wherein, The positioning hole is a blind hole arranged at the front end of the elbow operating head and extending into the elbow operating arm.
5. The tube bending fixture of claim 1, wherein, The positioning hole is a through hole arranged at the front end of the elbow operating head, extending and penetrating the rear end of the elbow operating arm, and the rear end of the elbow operating arm is provided with an adjusting member matched with the positioning hole and controlling the depth of the positioning hole.
6. The tube bending fixture of claim 5, wherein, The adjusting member is a slide column slidably matched with the positioning hole of the rear segment of the elbow operating arm, the side wall of the segment of the elbow operating arm is provided with a locking hole, a screw is arranged at the locking hole, and the position of the slide column in the positioning hole is determined by radially pressing the adjusting member through the screw.
7. The tube bending fixture of claim 5 wherein, The side wall of the segment of the elbow operating arm is axially and spacedly provided with a plurality of radial screw holes, and the adjusting member is a screw matched with the screw holes and capable of being stopped in the interior of the positioning hole.
8. The tube bending fixture of claim 5, wherein, The inner wall of the segment of the elbow operating arm is provided with an internal thread, and the adjusting member is a screw rod matched with the internal thread, the screw rod having a control portion extending out of the rear end of the elbow operating arm.
9. The tube bending fixture of claim 1, wherein, The elbow operating arm and the elbow operating head are integrally formed or fixedly connected in a threaded connection manner.
10. A pipe bending apparatus characterized by comprising: The pipe main body positioning mechanism, the tool driving mechanism and the elbow tool of any one of claims 1-9 are included; the tool driving mechanism drives the elbow tool to swing relative to the pipe main body positioning mechanism at a preset clamping angle.