A coil tube bending device
By setting up opposing bending mechanisms and limiting components in the pipe bending machine, and using the drive mechanism to apply opposite bending forces to the U-shaped pipe, the problem of low efficiency of the pipe bending machine is solved, and efficient and high-quality coil forming is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGZHOU SHENSHI ENERGY CONSERVATION TECH
- Filing Date
- 2020-07-02
- Publication Date
- 2026-06-26
AI Technical Summary
Existing tube bending machines are inefficient when bending heat exchange tubes and it is difficult to ensure the consistency of curvature at both ends of the tube and the quality of the coil.
The system employs a first and second pipe bending mechanism arranged opposite to each other, equipped with a first and second support member, and a turntable for mounting the U-shaped pipe to be bent. Opposite bending forces are applied by the first and second limiting members, and the system works in conjunction with the drive mechanism to achieve synchronous bending of the pipe.
It improves pipe bending efficiency, ensures the consistency of curvature at both ends of the pipe and the quality of the coil, avoids collisions of the pipe during bending, and adapts to the bending requirements of pipes of different lengths.
Smart Images
Figure CN111633085B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe bending machine technology, and more specifically to a coiled pipe bending device. Background Technology
[0002] A heat exchanger is a device that transfers part of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. A coaxial heat exchanger is a type of heat exchanger consisting of concentric inner and outer tubes. The hot and cold fluids flow and transfer heat respectively within the annular gaps of the inner and outer tubes. The heat exchange tubes in a coaxial heat exchanger employ a specific spiral structure. This design allows for a larger cross-sectional size in the water-side flow channel of the heat exchange tubes, enabling the passage of larger diameter sediment, fibers, and other impurities in the water, reducing the likelihood of blockage and making it more adaptable to the complex operating conditions of refrigeration systems.
[0003] In the production of coaxial heat exchangers, a tube bending machine is needed to coil straight heat exchange tubes into a stacked coil structure. Existing tube bending machines require fixing one end of the tube and then pressing it to bend it into the desired coil shape. To ensure the tube extends in a spiral shape, the tube's direction needs to be constantly adjusted during the bending process, resulting in low efficiency. Summary of the Invention
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the low efficiency of the existing pipe bending machine, thereby providing a coil bending device.
[0005] To solve the above-mentioned technical problems, the present invention provides a coil bending device, comprising:
[0006] The first and second pipe bending mechanisms are arranged opposite to each other. The end faces of the first and second pipe bending mechanisms are respectively provided with a first support and a second support. The first support and / or the second support are provided with a turntable suitable for installing the U-shaped pipe to be bent.
[0007] The first limiting member and the second limiting member are respectively provided on the first support member and the second support member, and the first limiting member and the turntable, and the second limiting member and the turntable respectively reserve a first limiting space and a second limiting space to allow the two arms of the U-shaped pipe to be bent to pass through.
[0008] The first driving mechanism and the second driving mechanism are respectively connected to the first support member and the second support member, and are adapted to drive the first support member and the second support member to rotate in opposite directions, and apply opposite bending forces to the two arms of the U-shaped tube to be bent through the first limiting member and the second limiting member.
[0009] Preferably, the first and second limiting members have limiting grooves formed on the side walls facing the turntable that are adapted to the U-shaped tube to be bent.
[0010] Preferably, along the axial direction of the first support member, the thickness of the turntable is not less than the sum of the thicknesses of the first limiting member and the second limiting member.
[0011] Preferably, a first adjusting member is also installed on the first supporting member, and a first limiting member is fixedly installed on the first adjusting member. The first adjusting member is adapted to drive the first limiting member to move perpendicular to the axis of the first supporting member.
[0012] The second support member is also equipped with a second adjusting member, and a second limiting member is fixedly installed on the second adjusting member. The second adjusting member is adapted to drive the second limiting member to move perpendicular to the axis of the second support member.
[0013] Preferably, it also includes a sliding member, on which the second bending mechanism is mounted. The sliding member has at least a mold-closing state in which it moves the second bending mechanism closer to the first bending mechanism, and a mold-unmolding state in which it moves the second bending mechanism away from the first bending mechanism.
[0014] Preferably, the slider includes a sliding rail and a slider that are slidably connected, and the second bending tube mechanism is fixedly mounted on the slider.
[0015] Preferably, a third drive mechanism is fixedly installed at one end of the slide rail, and the output end of the third drive mechanism is fixedly connected to the slider to drive the slider to slide along the slide rail.
[0016] Preferably, it also includes a first bracket and a second bracket, with the first bending mechanism mounted on the first bracket and the sliding member mounted on the second bracket.
[0017] Preferably, both the first and second supports are fixedly installed on the ground, and a clearance pit is provided between the first and second supports.
[0018] Preferably, a tray is installed on the side of the first support opposite to the second support, with one end of the tray rotatably connected to the first support and the other end overlapping the second support.
[0019] The technical solution of this invention has the following advantages:
[0020] 1. The coil bending device provided by the present invention includes: a first bending mechanism and a second bending mechanism arranged opposite to each other, wherein the end faces of the first bending mechanism and the second bending mechanism are respectively provided with a first support member and a second support member, and the first support member and / or the second support member are provided with a turntable suitable for installing a U-shaped tube to be bent; a first limiting member and a second limiting member are respectively provided on the first support member and the second support member, and a first limiting space and a second limiting space are respectively reserved between the first limiting member and the turntable, and between the second limiting member and the turntable, allowing the two arms of the U-shaped tube to be bent to pass through; a first driving mechanism and a second driving mechanism are respectively connected to the first support member and the second support member, and are suitable for driving the first support member and the second support member to rotate in opposite directions, and applying opposite bending forces to the two arms of the U-shaped tube to be bent through the first limiting member and the second limiting member.
[0021] When bending the pipe, it is first bent from the middle to form a U-shaped tube. The U-shaped tube is then mounted on a turntable. Simultaneously, the first and second driving mechanisms drive the first and second limiting members to rotate, respectively. The first and second limiting members apply forces in opposite directions to the two arms of the U-shaped tube, causing the two arms to wind around on the turntable, thus bending the pipe into a spiral coil. By bending both ends of the pipe simultaneously, the working efficiency of the bending device is greatly increased, and the curvature of both ends of the pipe is ensured to be the same, guaranteeing the quality of the final coil.
[0022] 2. The coil bending device provided by the present invention has limiting grooves formed on the side walls of the first and second limiting members facing the turntable, which are adapted to the U-shaped tube to be bent. The limiting grooves restrict the direction of the support arm of the U-shaped tube to be bent on the turntable, thereby avoiding collisions between the two ends of the tube during the bending process, which would affect the coiling efficiency.
[0023] 3. The coil bending device provided by the present invention includes a first adjusting member mounted on a first support member, and a first limiting member fixedly mounted on the first adjusting member. The first adjusting member is adapted to drive the first limiting member to move perpendicular to the axis of the first support member. A second adjusting member is mounted on a second support member, and a second limiting member is fixedly mounted on the second adjusting member. The second adjusting member is adapted to drive the second limiting member to move perpendicular to the axis of the second support member. By adjusting the positions of the first and second limiting members, the device avoids collisions between the bent tube already formed on the turntable and the first or second limiting member due to excessive tube length, which would affect the subsequent coiling process, or the device avoids the first or second limiting member failing to contact the tube due to excessive tube length. This allows the bending device to bend tubes of different lengths.
[0024] 4. The coil bending device provided by the present invention further includes a first support and a second support. The first bending mechanism is mounted on the first support, and the sliding member is mounted on the second support. By supporting the first and second bending mechanisms, the pipe is prevented from colliding with the ground due to excessive length. Attached Figure Description
[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the coil bending device provided in an embodiment of the present invention.
[0027] Figure 2 This is a schematic diagram of the structure in which the first bending mechanism and the second bending mechanism work together in an embodiment of the present invention.
[0028] Figure 3 This is a schematic diagram of the structure of the first pipe bending mechanism provided in an embodiment of the present invention.
[0029] Figure 4 This is a schematic diagram of the second pipe bending mechanism provided in an embodiment of the present invention.
[0030] Figure 5 This is a schematic diagram of the coil bending device provided in the embodiment of the present invention in the demolding state.
[0031] Figure 6 This is a schematic diagram of the structure of the formed coil provided in an embodiment of the present invention.
[0032] Figure 7 This is a schematic diagram of the U-shaped pipe to be bent provided in an embodiment of the present invention.
[0033] Explanation of reference numerals in the attached drawings: 1. First drive mechanism; 2. First support member; 3. First limiting member; 4. Turntable; 5. Second drive mechanism; 6. Second support member; 7. Second limiting member; 8. Slide rail; 9. Slider; 10. Third drive mechanism; 11. First adjusting member; 12. Second adjusting member; 13. First bracket; 14. Second bracket; 15. Clearance pit; 16. Pallet; 17. Loading platform; 18. Storage rack; 19. Guardrail; 20. U-shaped pipe to be bent; 21. Coil. Detailed Implementation
[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0037] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0038] like Figures 1 to 7 The image shows a specific embodiment of the coil bending device provided by the present invention, such as... Figure 1 As shown, it includes a first bending mechanism and a second bending mechanism that are arranged opposite to each other.
[0039] like Figure 2 As shown, the first and second bending mechanisms have a first support 2 and a second support 6 respectively on their opposite end faces. The first support 2 has a turntable 4 suitable for mounting the U-shaped pipe to be bent 20. The first support 2 and the second support 6 are two push plates arranged opposite each other, and the turntable 4 is coaxially arranged with the first support 2. The first support 2 and the second support 6 are respectively equipped with a first limiting member 3 and a second limiting member 7. The first limiting member 3 and the second limiting member 7 are protrusions with limiting grooves formed on their periphery to fit the U-shaped pipe to be bent 20. The first limiting member 3 and the turntable 4, and the second limiting member 7 and the turntable 4 are respectively reserved with a first limiting space and a second limiting space to allow the two arms of the U-shaped pipe to be bent 20 to pass through.
[0040] To ensure smooth bending, the thickness of the turntable 4 along the axial direction of the first support member 2 is the sum of the thicknesses of the first limiting member 3 and the second limiting member 7. This way, when the two arms of the U-shaped tube to be bent 20 are bent simultaneously, they will form two parallel layers, such as... Figure 6 As shown.
[0041] like Figure 3 and Figure 4 As shown, on the other side of the first support member 2 and the second support member 6, where the first limiting member 3 and the second limiting member 7 are not provided, a first driving mechanism 1 and a second driving mechanism 5 are respectively installed to drive the first support member 2 and the second support member 6 to rotate in opposite directions. The opposite rotation of the first support member 2 and the second support member 6 drives the first limiting member 3 and the second limiting member 7 to apply opposite bending forces to the two arms of the U-shaped tube to be bent 20. The first driving mechanism 1 and the second driving mechanism 5 are each composed of a servo motor and a geared motor. The first support member 2 and the second support member 6 are respectively mounted on the output shaft of the corresponding geared motor. A first adjusting member 11 and a second adjusting member 12 are respectively installed on the first support member 2 and the second support member 6. The first limiting member 3 is fixedly installed on the first adjusting member 11, and the first adjusting member 11 is adapted to drive the first limiting member 3 to move perpendicular to the axis of the first support member 2. The second limiting member 7 is fixedly installed on the second adjusting member 12, and the second adjusting member 12 is adapted to drive the second limiting member 7 to move perpendicular to the axis of the second support member 6. The first support member 2 and the second support member 6 are respectively provided with a first limiting groove and a second limiting groove. The first limiting groove extends along a direction perpendicular to the axis of the first support member, and the second limiting groove extends along a direction perpendicular to the axis of the second support member. The first limiting member and the second limiting member are respectively installed in the first limiting groove and the second limiting groove. The first adjusting member 11 and the second adjusting member 12 are both adjusting screws. As the bending proceeds, the thickness of the coil wound on the turntable 4 gradually increases. For this reason, the adjusting screw is continuously rotated, so that the first limiting member 3 slides along the first limiting groove to adjust the distance between the first limiting member 3 and the turntable 4, and the second limiting member 7 slides along the second limiting groove to adjust the distance between the second limiting member 7 and the turntable 4, so as to ensure the smooth progress of the bending.
[0042] The second bending mechanism is mounted on a sliding member. The sliding member has a mold-closing state, in which the second bending mechanism moves closer to the first bending mechanism, and a mold-unmolding state, in which the second bending mechanism moves away from the first bending mechanism. The sliding member includes a sliding rail 8 and a slider 9 that are slidably connected. The second bending mechanism is fixedly mounted on the slider 9. A third drive mechanism 10 is fixedly mounted on one end of the sliding rail 8. The output end of the third drive mechanism 10 is fixedly connected to the slider 9 to drive the slider 9 to slide along the sliding rail 8, thereby causing the second bending mechanism to move closer to or away from the first bending mechanism.
[0043] The first pipe bending mechanism is mounted on the first support 13, and the sliding component is mounted on the second support 14. Both the first support 13 and the second support 14 are fixedly mounted on the ground, and a clearance pit 15 is provided between the first support 13 and the second support 14. To prevent personnel or other debris from accidentally falling into the clearance pit 15, guardrails 19 are installed around the clearance pit 15. A loading platform 17 and a storage rack 18 are installed on one side of the clearance pit 15. The loading platform 17 is located close to the first pipe bending mechanism. Multiple U-shaped pipes to be bent 20 are placed on the storage rack 18, and the workers install the U-shaped pipes to be bent 20 onto the turntable 4 on the loading platform 17. A tray 16 is installed on the side of the first support 13 opposite to the second support 14. One end of the tray 16 is rotatably connected to the first support 13. When the U-shaped pipe to be bent 20 is installed onto the turntable 4 and the formed coil 21 is removed from the turntable 4, the other end of the tray 16 overlaps with the second support 14 to prevent the U-shaped pipe to be bent 20 or the formed coil 21 from falling directly into the avoidance pit 15, and to prevent workers loading or unloading materials from accidentally falling into the avoidance pit 15. When the coil bending device bends the pipe, the tray 16 is suspended on the side of the first support 13.
[0044] When bending pipes using the coil bending device provided by this invention, the pipe is first bent into a U-shaped pipe 20. The U-shaped pipe 20 is then mounted on the turntable 4, and the two arms of the U-shaped pipe 20 are respectively installed into the two limiting grooves of the first limiting member 3 and the second limiting member 7. Simultaneously, the first driving mechanism 1 and the second driving mechanism 5 drive the first limiting member 3 and the second limiting member 7 to rotate in opposite directions. The first limiting member 3 and the second limiting member 7 apply forces in opposite directions to the two arms of the U-shaped pipe 20, causing the two arms of the pipe to wind around on the turntable 4, thus bending the pipe into a spiral coil 21. By bending both ends of the pipe simultaneously, the working efficiency of the bending device is greatly increased.
[0045] As an alternative implementation, a turntable 4 may be provided on both the first support member 2 and the second support member 6, or a turntable 4 may be provided only on the second support member 6.
[0046] As an alternative implementation, multiple first limiting members 3 and second limiting members 7 are radially distributed on the first support member 2 and the second support member 6, and are detachably connected to the first support member 2 and the second support member 6. After each turn of the coil is completed, the first limiting members 3 and the second limiting members 7 of that turn are disassembled to ensure the smooth operation of the coil.
[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A coil bending device, characterized in that, include: The first and second pipe bending mechanisms are arranged opposite to each other. The end faces of the first and second pipe bending mechanisms are respectively provided with a first support member (2) and a second support member (6). The first support member (2) and / or the second support member (6) are provided with a turntable (4) suitable for installing the U-shaped pipe to be bent (20). The first support member (2) and the second support member (6) are coaxially arranged. A sliding member, on which the second bending mechanism is mounted, the sliding member having at least a mold-closing state that causes the second bending mechanism to move closer to the first bending mechanism, and a mold-unmolding state that causes the second bending mechanism to move away from the first bending mechanism; The first limiting member (3) and the second limiting member (7) are respectively provided on the first support member (2) and the second support member (6), and the first limiting member (3) and the turntable (4) and the second limiting member (7) and the turntable (4) are respectively reserved with a first limiting space and a second limiting space that allow the two arms of the U-shaped pipe to be bent (20) to pass through. The first drive mechanism (1) and the second drive mechanism (5) are connected to the first support member (2) and the second support member (6) respectively, and are adapted to drive the first support member (2) and the second support member (6) to rotate in opposite directions, and apply opposite bending forces to the two arms of the U-shaped tube to be bent (20) through the first limiting member (3) and the second limiting member (7). The two arms of the U-shaped tube to be bent (20) are adapted to be wound and bent into a spiral coil (21) on the turntable (4).
2. The coil bending device according to claim 1, characterized in that, The first limiting member (3) and the second limiting member (7) have limiting grooves formed on the side wall facing the turntable (4) that are adapted to the U-shaped tube to be bent (20).
3. The coil bending device according to claim 1 or 2, characterized in that, Along the axial direction of the first support member (2), the thickness of the turntable (4) is not less than the sum of the thicknesses of the first limiting member (3) and the second limiting member (7).
4. The coil bending device according to claim 1 or 2, characterized in that, The first support member (2) is also equipped with a first adjusting member (11), and the first limiting member (3) is fixedly installed on the first adjusting member (11). The first adjusting member (11) is adapted to drive the first limiting member (3) to move perpendicular to the axis of the first support member (2). The second support member (6) is also equipped with a second adjusting member (12), and the second limiting member (7) is fixedly installed on the second adjusting member (12). The second adjusting member (12) is adapted to drive the second limiting member (7) to move perpendicular to the axis of the second support member (6).
5. The coil bending device according to claim 1, characterized in that, The sliding component includes a sliding rail (8) and a slider (9) that are slidably connected, and the second bending mechanism is fixedly installed on the slider (9).
6. The coil bending device according to claim 5, characterized in that, A third drive mechanism (10) is fixedly installed at one end of the slide rail (8). The output end of the third drive mechanism (10) is fixedly connected to the slider (9) to drive the slider (9) to slide along the slide rail (8).
7. The coil bending device according to claim 5 or 6, characterized in that, It also includes a first bracket (13) and a second bracket (14), the first bending mechanism is mounted on the first bracket (13), and the sliding member is mounted on the second bracket (14).
8. The coil bending device according to claim 7, characterized in that, The first bracket (13) and the second bracket (14) are both fixedly installed on the ground, and an avoidance pit (15) is provided between the first bracket (13) and the second bracket (14).
9. The coil bending device according to claim 8, characterized in that, A tray (16) is installed on the side of the first bracket (13) opposite to the second bracket (14). One end of the tray (16) is rotatably connected to the first bracket (13), and the other end overlaps with the second bracket (14).