Thin-wall pipe fitting bending device and pipe bending machine
By using a contoured structure composed of flexible modules and clamping modules in the air-conditioning system, the problems of easy cracking and leakage in the bent parts of the pipe fittings and poor molding quality are solved, uniform bending and high-quality forming of the pipe fittings are achieved, and the air-conditioning system is improved Reliability and pressure bearing capacity of parts.
Patent Information
- Application Number
- CN202411530753.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-13
AI Technical Summary
In existing air-conditioning systems, copper product pipeline parts are prone to cracks and leaks in the bent parts, and the processing and forming quality is poor, resulting in poor parts reliability and forming quality, which cannot meet the requirements of improved pressure bearing capacity.
A thin-walled pipe fitting bending device is designed, and a flexible module is composed of several flexible plates with the same structure, and the adjacent plates are in contact with each other, forming a contour structure, which is connected by sliding and connected by the clamping module and the backing module. Arc tracks ensure that the material flows evenly during the bending process of pipe fittings, improving bending flatness and forming quality.
Through the profiling structure of the flexible module, the wall thickness of the pipe fittings is uniform, the surface is smooth, and the bending ratio is close to 1, which improves the forming and processing quality of the pipe fittings, ensures the stability and strength of the pipe fittings, and avoids uneven wall thickness and cracks. question.
Smart Images
Figure CN119114712A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of thin-walled pipe bending, and in particular to a thin-walled pipe bending device and a pipe bending machine. Background Art
[0002] With the development of refrigeration technology, more new refrigerants are used in air-conditioning systems, such as R134a, R410a, R32, R600, etc. The maximum working pressure of the air conditioner refrigerant system also needs to be increased synchronously. Compared with the R22 refrigerant system, its maximum working pressure has increased by about 20%. In other words, the pressure-bearing capacity of the internal parts and components of the air conditioner must be improved synchronously. During the verification of the air-conditioning product development process and the after-sales research and analysis, it was found that the bending parts of the copper pipes in the air-conditioning system are prone to cracks and leaks. In addition, there are many reasons for the failure of pipe parts. After factory experimental analysis and simulated air conditioner after-sales environment operation follow-up analysis, it was found that the local processing and molding quality of pipe parts is one of the main causes of pipe parts failure.
[0003] After the pipe parts are processed and formed, there will be a certain degree of roundness loss at the bending part. The industry usually divides the maximum diameter of the pipe by the minimum diameter and calls it the flattening rate. The closer the flattening rate is to 1, the better. Otherwise, it indicates that the local material flow of the pipe parts is inconsistent when bending, and the reliability quality of the parts will deteriorate after the pipe parts are formed. In the air-conditioning system, due to the movement of parts, refrigerant and pulse, and resonance of parts, the pipe parts are elastically deformed all the time. After running for a period of time, fatigue damage will occur in the quality weak parts of the parts (the deformation impact of pipe parts in air-conditioning systems is generally 50-8000 times / minute).
[0004] The existing pipe fittings processing is generally to feed the pipe coil to the automatic pipe bending machine to bend the parts. However, the existing pipe fittings production has poor reliability during the pipe fitting bending process and cannot guarantee the production and processing quality of the pipe fitting bending. Therefore, a thin-wall pipe fitting bending device is needed to improve the above problems. Summary of the invention
[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a thin-walled pipe bending device and a pipe bending machine.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0007] In the first aspect, an embodiment of the present invention provides a thin-walled pipe bending device, comprising: a base, a clamping mold, a backing mold, a flexible module, a connector and a circular mold, the flexible module being composed of a plurality of flexible plates of the same structure distributed side by side, and the sides of adjacent flexible plates contact each other, the clamping mold, the flexible module and the backing mold are sequentially connected in series to the connector from front to back, the backing mold and the flexible module are slidably connected to the base, the clamping mold, the flexible plate and the backing mold are all provided with specific contoured curved grooves for placing pipes, an arc track corresponding to the specific contoured curved groove is provided on the outer side of the circular mold, the clamping mold and part of the flexible module are connected to the arc track to form a bending channel for the pipe.
[0008] In a specific embodiment, a slide groove is provided on a side of the base facing the backing member, and the backing member and the flexible module are slidably connected to the slide groove.
[0009] In a specific embodiment, the number of the connectors is three, and they are respectively located above and below the specific contoured curved groove and in the middle area of the clamping mold, so that the three connectors are distributed in a triangular shape.
[0010] In a specific embodiment, the diameter of the specific contoured curved groove differs from the outer diameter of the tube by -0.5-0.5 mm.
[0011] In a specific embodiment, the upper surfaces of the flexible module and the clamping module are in the same horizontal plane.
[0012] In a specific embodiment, the thickness of the flexible board is 2-5 mm.
[0013] The thin-walled pipe bending device of the present invention has the following beneficial effects compared with the prior art: by setting a flexible module composed of several flexible plates of the same structure arranged side by side, and the sides of adjacent flexible plates contact each other, a contoured structure that can adapt to the shape of the pipe can be formed. As the shape of the pipe changes during the bending process, the flexible module can also adjust its shape accordingly to ensure that the pipe material can flow evenly during bending, so that the wall thickness of the pipe is uniform and the surface is smooth. The bending rate of the pipe can also be increased to close to 1 to improve the forming and processing quality of the pipe.
[0014] In the second aspect, an embodiment of the present invention provides a pipe bending machine, comprising a thin-walled pipe bending device as described above, a machine tool body, a fastening module and a clamping module, wherein the circular mold is rotatably connected to the machine tool body, the base is connected to the fastening module, and the clamping mold is connected to the clamping module so that the clamping mold is pressed against the circular mold, and the operation of the machine tool body drives the circular mold and the clamping mold to move synchronously so as to bend the pipe.
[0015] In a specific embodiment, the base is provided with a first positioning groove and a first connecting hole, and the fastening module is connected to the first positioning groove and the first connecting hole.
[0016] In a specific embodiment, the clamping module is provided with a second positioning groove and a second connecting hole, and the clamping module is connected to the second positioning groove and the second connecting hole.
[0017] In a specific embodiment, the circular mold part is provided with a mounting hole, and the circular mold part is fixed to the machine tool body through the mounting hole, so that the operation of the machine tool body drives the circular mold part to rotate.
[0018] The pipe bending machine of the present invention has the following beneficial effects compared with the prior art: by setting a flexible module composed of several flexible plates with the same structure arranged side by side, the sides of adjacent flexible plates are in contact with each other, so that a contour-matching structure that can adapt to the shape of the pipe fitting can be formed. As the main body of the machine tool works, the circular mold and the clamping mold are driven to move synchronously to bend the pipe fitting. The shape of the pipe fitting changes during the bending process, and the flexible module can also adjust its shape accordingly to ensure that the pipe fitting material can flow evenly during bending, so that the wall thickness of the pipe fitting is uniform and the surface is smooth. The bending flattening rate of the pipe fitting can also be increased to close to 1 to improve the forming processing quality of the pipe fitting.
[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0021] Figure 1 A schematic diagram of the structure of the thin-walled pipe bending device provided by the present invention;
[0022] Figure 2 A schematic diagram of a portion of the structure of the thin-walled pipe bending device provided by the present invention;
[0023] Figure 3 A schematic diagram of the structure of the pipe bending machine provided by the present invention;
[0024] Figure 4 A schematic diagram of the structure of the pipe bender provided by the present invention when bending a pipe at 45 degrees;
[0025] Figure 5 This is a schematic diagram of the structure of the pipe bending machine provided by the present invention when bending a pipe fitting 90 degrees.
[0026] Reference numerals:
[0027] Base 10, first positioning groove 11, first connecting hole 12, clamping module 20, specific contoured curved groove 21, second positioning groove 22, second connecting hole 23, backing module 30, flexible module 40, connector 50, circular module 60, arc track 61, mounting hole 62, machine tool body 70, fastening module 80, clamping module 90. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.
[0035] See also Figure 1 to Figure 2 The specific embodiment shown in the figure discloses a thin-walled pipe bending device, comprising: a base 10, a clamping mold 20, a backing mold 30, a flexible module 40, a connector 50 and a circular mold 60, wherein the flexible module 40 is composed of a plurality of flexible plates with the same structure arranged side by side, and the sides of adjacent flexible plates are in contact with each other, the clamping mold 20, the flexible module 40 and the backing mold 30 are sequentially connected in series with the connector 50 from front to back, the backing mold 30 and the flexible module 40 are slidably connected to the base 10, the clamping mold 20, the flexible plate and the backing mold 30 are all provided with a specific contoured curved groove 21 for placing pipes, an arc track 61 corresponding to the specific contoured curved groove 21 is provided on the outer side of the circular mold 60, and the clamping mold 20 and part of the flexible module 40 are connected to the arc track 61 to form a bending channel for the pipe.
[0036] Specifically, by setting the flexible module 40 to be composed of several flexible plates of the same structure arranged side by side, and the sides of adjacent flexible plates contact each other, a contoured structure that can adapt to the shape of the pipe can be formed. As the shape of the pipe changes during the bending process, the flexible module 40 can also adjust its shape accordingly to ensure that the pipe material can flow evenly during bending, so that the wall thickness of the pipe is uniform and the surface is smooth. The bending flattening rate of the pipe can also be increased to close to 1 to improve the quality of the pipe forming process. In addition, by the specific contoured curved groove 21 (for example: semicircular notch) set on the clamping mold 20, the flexible module 40 and the supporting mold 30, and the arc track 61 corresponding to the specific contoured curved groove 21, the pipe can be accurately positioned and clamped. This design ensures the stability and accuracy of the pipe during the bending process and avoids the bending quality problem caused by the displacement of the pipe position. In addition, during the bending process of the pipe fitting, the flexible module 40 can imitate the shape of the pipe fitting in real time, thereby ensuring that the pipe fitting material can flow evenly when bending. This design helps to avoid problems such as uneven wall thickness, cracks or fractures in the bending process of the pipe fitting, thereby improving the forming quality and strength of the pipe fitting. In addition, since the flexible module 40 is composed of a number of flexible plates with the same structure, it can adapt to pipe fittings of different diameters by adjusting the number, arrangement, and size of the flexible plates. This design makes the device have better versatility and flexibility, and can meet the needs of bending a variety of pipe fittings. In addition, by adjusting the positions of the clamping module 20, the flexible module 40 and the supporting module 30 on the connector 50, and by using the arc track 61 outside the circular module 60, the bending angle of the pipe fitting can be accurately controlled. This design enables the device to achieve accurate control of the bending angle of the pipe fitting, meeting the requirements of different application scenarios for the shape and size of the pipe fitting.
[0037] In one embodiment, a slide groove (not shown in the figure) is provided on a side of the base 10 facing the back mold member 30 , and the back mold member 30 and the flexible module 40 are slidably connected to the slide groove.
[0038] Specifically, during the bending process of the pipe fitting, the clamping mold 20, the flexible module 40, the support mold 30 and the connector 50 form a whole and slide relative to the base 10. The design of the slide groove allows the support mold 30 and the flexible module 40 to slide along the slide groove during the bending process of the pipe fitting. This sliding movement not only increases the flexibility of the device during the bending process, but also enables the pipe fitting to complete the bending action more smoothly. In addition, the slide groove provides a stable motion trajectory for the support mold 30 and the flexible module 40. During the bending process of the pipe fitting, the support mold 30 and the flexible module 40 slide along the slide groove, which can ensure that they always maintain the correct position and angle, thereby ensuring the accuracy of the bending of the pipe fitting. In addition, by guiding the movement of the support mold 30 and the flexible module 40 through the slide groove, the stress distribution of the pipe fitting during the bending process can be more effectively controlled, which helps to reduce the internal stress and deformation of the pipe fitting during the bending process, thereby improving the forming quality and strength of the pipe fitting. In addition, the design of the slide simplifies the operating steps in the process of bending the pipe. The operator only needs to place the pipe between the clamping mold 20, the flexible module 40 and the supporting mold 30, and then start the circular mold 60 to drive the supporting mold 30 and the flexible module 40 to slide automatically along the slide to complete the bending process of the pipe. This automated operation not only improves the processing efficiency, but also reduces the operating difficulty and labor intensity.
[0039] In one embodiment, the number of the connectors 50 is three, and they are respectively located above and below the specific contoured curved groove 21 and in the middle area of the clamping mold 20 , so that the three connectors 50 are distributed in a triangular shape.
[0040] Specifically, the three connectors 50 are distributed in a triangular shape, which can more effectively support and fix the flexible module 40. During the bending process of the pipe fitting, the flexible module 40 will be subjected to pressure and bending force from the pipe fitting. The uniform distribution of the three connectors 50 can ensure that the flexible module 40 can maintain balance when subjected to force, avoid the situation of excessive local force, and thus extend the service life of the flexible module 40. In addition, the triangle is a geometric shape with high stability. In the thin-walled pipe bending device, the three connectors 50 are distributed in a triangular shape, which can form a stable support structure. This structure not only helps to prevent the flexible module 40 from shifting or deforming during the bending process, but also improves the stability and reliability of the entire device. In addition, since the three connectors 50 can ensure that the flexible module 40 is uniformly stressed and has a stable structure, during the bending process of the pipe fitting, the pipe fitting can complete the bending action more smoothly, and the bending angle and shape can be kept consistent, which helps to improve the accuracy and consistency of the pipe fitting bending process, thereby meeting higher quality requirements. In addition, the design of three connectors 50 makes the structure of the device more concise and clear, and is convenient for operators to operate and maintain. For example, when replacing the flexible module 40 or adjusting the bending angle, the operator can more conveniently disassemble and install related components, thereby improving work efficiency and reducing maintenance costs.
[0041] In one embodiment, the diameter of the specific contoured curved groove 21 differs from the outer diameter of the pipe by -0.5-0.5 mm.
[0042] Specifically, the closed curved surface formed by the clamping mold 20 and the circular mold 60, the diameter of the specific contoured curved surface groove 21 in the clamping mold 20 is smaller than the diameter of the pipe, so as to clamp the pipe and ensure that the pipe will not be displaced when it is bent, so as to avoid affecting the bending accuracy of the pipe. The diameter of the specific contoured curved surface groove 21 in the support mold 30 and the flexible module 40 and the closed curved surface formed by the circular mold 60 are larger than the outer diameter of the pipe, and the function is to form a contoured channel when the pipe is bent, which reflects the flexibility of the flexible module 40 in the bending process, so that the pipe can complete the bending action more smoothly, and improve the quality of the pipe.
[0043] In one embodiment, the upper surfaces of the flexible module 40 and the clamping module 20 are in the same horizontal plane.
[0044] Specifically, when the upper surfaces of the flexible module 40 and the clamping module 20 are at the same horizontal plane, the pipe fitting can be subjected to uniform pressure and bending force during the bending process, which helps to reduce the internal stress and deformation of the pipe fitting during the bending process, thereby improving the forming quality and strength of the pipe fitting. In addition, since the upper surfaces of the flexible module 40 and the clamping module 20 are at the same horizontal plane, the pipe fitting can more easily maintain the correct position and angle when placed and bent, which helps to reduce the error in the bending process and improve the bending accuracy and consistency of the pipe fitting. In addition, when the upper surfaces of the flexible module 40 and the clamping module 20 are at the same horizontal plane, the operator can more conveniently place the pipe fitting in the device and perform subsequent bending operations. This design reduces the difficulty of operation and labor intensity and improves work efficiency. In addition, the design of the flexible module 40 and the clamping module 20 at the same horizontal plane enables the entire device to maintain a more stable structure during the bending process, which helps to reduce the shaking and deformation of the device during the bending process, thereby improving the reliability and service life of the device.
[0045] In one embodiment, the thickness of the flexible board is 2-5 mm.
[0046] Specifically, the flexible plate needs to have a certain strength and rigidity to support the pipe and transmit the bending force during the bending process. The flexible plate with a thickness of 2-5mm can provide sufficient strength and rigidity to ensure that the pipe will not be deformed or damaged during the bending process due to the flexible plate being too soft. At the same time, the flexible plate also needs to have a certain flexibility to adapt to the bending deformation of the pipe during the bending process. The flexible plate with a thickness of 2-5mm maintains sufficient flexibility while ensuring a certain strength and rigidity, and can deform with the bending of the pipe, thereby achieving efficient bending of the pipe. In addition, the appropriate thickness of the flexible plate helps to optimize the bending effect. A too thick flexible plate may cause uneven transmission of the bending force and affect the bending accuracy; while a too thin flexible plate may be damaged due to insufficient strength. A flexible plate with a thickness of 2-5mm can provide a stable bending effect while ensuring the bending accuracy. In addition, the appropriate thickness can also extend the service life of the flexible plate. During repeated bending, the flexible plate will be subjected to greater stress and wear. The flexible plate with a thickness of 2-5mm has sufficient thickness and strength to resist these stresses and wear, thereby extending the service life. In addition, since the outer diameter and bending requirements of the pipe fittings may be different, the thickness of the flexible board also needs to be adjusted accordingly. The flexible board with a thickness of 2-5mm provides a wider thickness range, which can be selected and adjusted according to different pipe fittings and bending requirements to meet various processing needs.
[0047] See also Figures 1 to 5The specific embodiment shown in the figure, the present invention also discloses a pipe bending machine, including the thin-walled pipe bending device as described above, a machine tool body 70, a fastening module 80 and a clamping module 90, the circular mold 60 is rotatably connected to the machine tool body 70, the base 10 is connected to the fastening module 80, and the clamping mold 20 is connected to the clamping module 90 so that the clamping mold 20 is pressed against the circular mold 60, and the machine tool body 70 drives the circular mold 60 and the clamping mold 20 to move synchronously when working so as to bend the pipe.
[0048] Specifically, by arranging the flexible module 40 to consist of several flexible plates of the same structure arranged side by side, and the sides of adjacent flexible plates contact each other, a contoured structure that can adapt to the shape of the pipe can be formed. As the machine tool body 70 works, the circular module 60 and the clamping module 20 are driven to move synchronously to bend the pipe. The shape of the pipe changes during the bending process, and the flexible module 40 can also adjust its shape accordingly to ensure that the pipe material can flow evenly during bending, so that the wall thickness of the pipe is uniform and the surface is smooth. The bending rate of the pipe can also be increased to close to 1 to improve the quality of the pipe forming process. In addition, when the machine tool body 70 is working, the circular mold 60 and the clamping mold 20 move synchronously under the action of the driving force. The circular mold 60 serves as a mold for bending the pipe, and its rotation trajectory determines the bending shape and angle of the pipe. Under the joint action of the circular mold 60 and the clamping mold 20, the thin-walled pipe is gradually bent to the desired shape. The clamping effect of the clamping mold 20 ensures that the pipe will not be deformed or damaged due to uneven force during the bending process.
[0049] In one embodiment, the base 10 is provided with a first positioning groove 11 and a first connecting hole 12 , and the fastening module 80 is connected to the first positioning groove 11 and the first connecting hole 12 .
[0050] Specifically, by the cooperation of the fastening module 80 with the first positioning groove 11 and the first connecting hole 12, it can be ensured that the base 10 maintains a stable position during the bending process of the pipe fitting, and there will be no displacement or shaking. This stability is crucial to ensure bending accuracy and processing quality. In addition, the design of the first positioning groove 11 and the first connecting hole 12 allows the fastening module 80 to be connected to the base 10 in a precise manner. This precise positioning helps to ensure that the pipe fitting is in the correct position during the bending process, thereby improving the processing accuracy. In addition, since the connection between the base 10 and the fastening module 80 is stable, the error caused by the movement or shaking of the base 10 can be reduced, which helps to ensure that the size and shape of the pipe fitting after bending meet the design requirements. In addition, during the bending process of the pipe fitting, the base 10 needs to withstand the pressure from the pipe fitting. By the cooperation of the fastening module 80 with the first positioning groove 11 and the first connecting hole 12, these pressures can be more evenly distributed on the base 10, thereby enhancing the structural strength.
[0051] In one embodiment, the clamping module 20 is provided with a second positioning groove 22 and a second connecting hole 23 , and the clamping module 90 is connected to the second positioning groove 22 and the second connecting hole 23 .
[0052] Specifically, through the cooperation between the clamping module 90 and the second positioning groove 22 and the second connecting hole 23, it can be ensured that the clamping module 20 maintains a stable position during the bending process of the pipe fitting, and there will be no displacement or shaking. This stability is crucial to ensuring the bending accuracy and processing quality, because any slight movement of the clamping module 20 may affect the final shape and size of the pipe fitting. In addition, the design of the second positioning groove 22 and the second connecting hole 23 allows the clamping module 90 to be connected to the clamping module 20 in a precise manner. This precise positioning helps to ensure that the pipe fitting is accurately clamped and positioned during the bending process, thereby improving the processing accuracy. In addition, since the connection between the clamping module 20 and the clamping module 90 is stable, the error caused by the movement or shaking of the clamping module 20 can be reduced, which helps to ensure that the size and shape of the pipe fitting after bending meet the design requirements and improve the product qualification rate and consistency. In addition, during the bending process of the pipe, the clamping module 20 needs to withstand the pressure from the pipe. Through the cooperation of the clamping module 90 with the second positioning groove 22 and the second connecting hole 23, the pressure can be more evenly distributed on the clamping module 20, thereby enhancing the structural strength.
[0053] In one embodiment, the circular mold 60 is provided with a mounting hole 62 , and the circular mold 60 is fixed to the machine tool body 70 through the mounting hole 62 , so that the operation of the machine tool body 70 drives the circular mold 60 to rotate.
[0054] Specifically, through the mounting hole 62, the round mold 60 can be stably fixed on the machine tool body 70. This fixed connection ensures that the round mold 60 can maintain stable rotation when the machine tool body 70 is working, and there will be no shaking or deviation. In addition, the machine tool body 70 is connected to the round mold 60 through the mounting hole 62, which can effectively transmit power to the round mold 60, so that it rotates at a predetermined speed and direction. This power transmission is the basis for the pipe bending machine to achieve pipe bending. In addition, the design of the mounting hole 62 allows the round mold 60 to be fixed on the machine tool body 70 in a precise manner. This precise positioning helps to ensure that the pipe is accurately placed on the round mold 60 during the bending process, thereby improving the processing accuracy. In addition, since the connection between the round mold 60 and the machine tool body 70 is stable, the error caused by unstable connection can be reduced, which helps to ensure that the size and shape of the pipe after bending meet the design requirements. In addition, during the bending process of the pipe, the circular mold 60 needs to withstand the pressure and friction from the pipe. By connecting with the machine tool body 70 through the mounting hole 62, these pressures can be more evenly distributed on the circular mold 60 and the machine tool body 70, thereby enhancing the structural strength.
[0055] Specifically, the fastening module 80 and the clamping module 90 are both composed of a cylinder and a fixed arm, wherein the cylinder of the fastening module 80 is fixedly connected to the machine tool body 70, and the cylinder of the clamping module 90 is slidably connected to the machine tool body 70, one end of the fixed arm is transmission connected to the telescopic end of the cylinder, and the other end is connected to the base 10 or the clamping module 20 (i.e., the first positioning groove 11, the first connecting hole 12 or the second positioning groove 22, the second connecting hole 23). Before performing the pipe bending operation, the pipe is first placed in a specific contoured curved groove 21, the clamping mold 20 is pressed against the circular mold 60 to clamp the pipe, and part of the flexible module 40 is connected to the arc track 61 to form a contoured channel for the pipe. When the machine tool body 70 is working, the clamping mold 20, the circular mold 60 and the pipe synchronously move in a circle around the axis of the circular mold 60, the base 10 remains in position, and the flexible module 40 moves closely against the arc track 61 of the circular mold 60 to perform contouring. After the pipe is bent, the two cylinders simultaneously drive the clamping mold 20 and the base 10 to move toward the side away from the circular mold 60 to separate from the circular mold 60, and the bent pipe can be taken out at this time. For the specific processing process of pipe bending, please refer to Figure 4 The bent pipe shown is 45 degrees and Figure 5 Schematic diagram of bending a pipe 90 degrees.
[0056] Specifically, the machine tool body 70 adopts the existing public technology, which will not be elaborated in detail here.
[0057] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.
Claims
1. A thin-walled pipe bending device, characterized in that: include: A base, a clamping mold, a backing mold, a flexible module, a connector and a circular mold. The flexible module is composed of a number of flexible plates with the same structure distributed side by side, and the sides of adjacent flexible plates are in contact with each other. The clamping mold, the flexible module and the backing mold are sequentially connected to the connector from front to back. The backing mold and the flexible module are slidably connected to the base. The clamping mold, the flexible plate and the backing mold are all provided with specific contoured curved grooves for placing pipes. The outer side of the circular mold is provided with an arc track corresponding to the specific contoured curved groove. The clamping mold and part of the flexible module are connected to the arc track to form a bending channel for the pipe.
2. The thin-walled pipe bending device according to claim 1, characterized in that: A slide groove is provided on one side of the base facing the supporting mold member, and the supporting mold member and the flexible module are slidably connected to the slide groove.
3. The thin-walled pipe bending device according to claim 1, characterized in that: The number of the connectors is three, and they are respectively located above and below the specific contoured curved groove and in the middle area of the clamping mold, so that the three connectors are distributed in a triangular shape.
4. The thin-walled pipe bending device according to claim 1, characterized in that: The diameter of the specific contoured curved groove differs from the outer diameter of the pipe by -0.5-0.5 mm.
5. The thin-walled pipe bending device according to claim 1, characterized in that: The upper surfaces of the flexible module and the clamping module are in the same horizontal plane.
6. The thin-walled pipe bending device according to claim 1, characterized in that: The thickness of the flexible board is 2-5 mm.
7. A pipe bending machine, characterized in that: It comprises a thin-walled pipe bending device as described in any one of claims 1 to 6, a machine tool body, a fastening module and a clamping module, the circular mold is rotatably connected to the machine tool body, the base is connected to the fastening module, and the clamping mold is connected to the clamping module so that the clamping mold is pressed against the circular mold. The operation of the machine tool body drives the circular mold and the clamping mold to move synchronously so as to bend the pipe.
8. The pipe bending machine according to claim 7, characterized in that: The base is provided with a first positioning groove and a first connecting hole, and the fastening module is connected to the first positioning groove and the first connecting hole.
9. The pipe bending machine according to claim 7, characterized in that: The clamping module is provided with a second positioning groove and a second connecting hole, and the clamping module is connected to the second positioning groove and the second connecting hole.
10. The pipe bending machine according to claim 7, characterized in that: The circular mold piece is provided with a mounting hole, and the circular mold piece is fixed to the machine tool body through the mounting hole, so that the operation of the machine tool body drives the circular mold piece to rotate.