Bending device for heat transfer tube of heat exchanger

Abstract

The invention discloses a bending device for a heat transfer tube of a heat exchanger, and relates to the technical field of machining equipment.The bending device comprises an assembling plate assembled on a portal frame, an adjusting mechanism, a stamping air cylinder and a bearing mechanism are arranged at the bottom end of the assembling plate, and the stamping air cylinder conducts horizontal position adjustment along the assembling plate through the adjusting mechanism; the bearing mechanism is used for bearing the heat transfer pipe of the heat exchanger and is matched with the stamping air cylinder for bending. According to the heat transfer pipe bending device, the extrusion rod with the adjustable position is matched with the detachable and replaceable bending die, the machining requirements of heat transfer pipes with different pipe diameters and different bending angles can be flexibly met, multiple special devices do not need to be additionally purchased, the production cost is effectively reduced, and the device utilization rate is increased; in the aspect of machining precision, the protruding blocks of the V-shaped structures are matched with the grooves, accurate positioning of the bending die is achieved, the die is prevented from deviating in the machining process, and the accuracy of the bending angle and the product quality are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, and more specifically, to a heat exchanger heat transfer tube bending device. Background Technology

[0002] Heat exchangers, as key components in industrial production and civil equipment, are widely used in chemical, energy, refrigeration, and other fields. The processing precision of their core component, the heat transfer tube, directly affects the heat transfer efficiency and overall service life of the heat exchanger. During the manufacturing process of heat exchangers, the heat transfer tube needs to be bent at specific angles and curvatures according to the structural requirements of the equipment.

[0003] Existing heat transfer tube bending equipment generally suffers from the following problems: First, the bending dies are mostly fixed structures, which cannot adapt to the processing requirements of different pipe diameters and bending angles. The equipment has poor versatility, which leads to enterprises needing to invest a lot of money to purchase a variety of special equipment, increasing production costs. Second, heat transfer tubes are prone to uneven deformation, pipe wall wrinkles, and excessive bending angle deviations during the bending process, affecting product quality and thus reducing the performance of the heat exchanger. Third, the adjustment mechanism of existing equipment is poorly designed, making it difficult to accurately control the pressure and position during the bending process. The operation is cumbersome, the processing efficiency is low, and it cannot meet the needs of large-scale production.

[0004] To address the shortcomings of the aforementioned technologies, no effective solutions have yet been proposed. Therefore, there is an urgent need for a heat exchanger heat transfer tube bending device that is structurally sound, highly versatile, has high processing precision, and is easy to operate. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes a heat exchanger heat transfer tube bending device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] The technical solution of this invention is implemented as follows:

[0007] A heat exchanger heat transfer tube bending device includes: an assembly plate mounted on a gantry frame, an adjustment mechanism, a stamping cylinder and a bearing mechanism at the bottom end of the assembly plate, the stamping cylinder being adjusted horizontally along the assembly plate by the adjustment mechanism, and the bearing mechanism being used to support the heat exchanger heat transfer tube and adapted to the stamping cylinder for bending processing.

[0008] An auxiliary rod is connected to the output end of the stamping cylinder. A stamping plate is movably connected to the end of the auxiliary rod. An upper pressing rod and a lower pressing rod are movably connected to the top and bottom ends of the stamping plate, respectively. A support seat is movably connected to the upper pressing rod. The support seat is fixedly connected to the bottom end of the assembly plate. An extrusion seat is movably connected to the end of the lower pressing rod. An extrusion arm is provided on both sides of the bottom end of the extrusion seat in an inclined manner.

[0009] Furthermore, the bearing mechanism includes: upright arms symmetrically fixed to the bottom end of the assembly plate, a bearing plate fixedly connected between the bottom ends of the upright arms, a bearing platform at the top of the bearing plate, an assembly groove inside the bearing platform, a bending die movably disposed inside the assembly groove, a bending groove adapted to the heat transfer tube model inside the bending die, and the bending die being adapted to the extrusion seat.

[0010] Furthermore, protrusions for limiting are provided on both sides of the assembly groove, and a groove for matching the protrusions is provided at the bottom of the bending die. The protrusions and grooves are V-shaped structures.

[0011] Furthermore, the adjustment mechanism includes: a slide rail fixedly mounted on the bottom end of the mounting plate, a slide plate slidably sleeved on the bottom end of the slide rail, and a stamping cylinder fixed on the slide plate.

[0012] Furthermore, the extrusion arm is provided with several adjustment holes, and an extrusion rod is fixedly inserted into each adjustment hole.

[0013] Furthermore, the adjustment holes are evenly distributed along the length of the extrusion arm.

[0014] Furthermore, the stamping plate and the auxiliary rod are connected by a universal joint.

[0015] The beneficial effects of this invention are:

[0016] This invention, through the combination of an adjustable pressing rod and a detachable and replaceable bending die, can flexibly adapt to the processing needs of heat transfer tubes with different diameters and bending angles. It eliminates the need for additional specialized equipment, effectively reducing production costs and improving equipment utilization. Regarding processing precision, the V-shaped structure of the protrusions and grooves works together to achieve precise positioning of the bending die, preventing die misalignment during processing and ensuring the accuracy of the bending angle and product quality. Operation is convenient and efficient; the adjustment mechanism uses a sliding rail and plate combination structure, allowing for quick and smooth adjustment of the stamping cylinder position. The entire processing flow is simple and easy to operate, significantly improving processing efficiency and making it suitable for large-scale production. Furthermore, the overall structural design is reasonable and stable. The support base provides stable support for the upper pressing rod, and the universal joint connection between the stamping plate and the auxiliary rod ensures uniform force distribution, making the device stable and reliable in operation and extending its service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a heat exchanger heat transfer tube bending device according to an embodiment of the present invention;

[0019] Figure 2 This is a side view schematic diagram of a heat exchanger heat transfer tube bending device according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the extrusion seat of a heat exchanger heat transfer tube bending device according to an embodiment of the present invention.

[0021] In the picture:

[0022] 1. Assembly plate; 2. Adjustment mechanism; 3. Stamping cylinder; 4. Auxiliary rod; 5. Stamping plate; 6. Upper pressure rod; 7. Lower pressure rod; 8. Bearing mechanism; 9. Extrusion seat; 10. Extrusion arm; 11. Adjustment hole; 12. Extrusion rod; 13. Support seat;

[0023] 21. Slide rail; 22. Skateboard;

[0024] 81. Vertical arm; 82. Bearing plate; 83. Bearing platform; 84. Assembly slot; 85. Bending die; 86. Bending groove; 87. Protrusion; 88. Groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0026] According to an embodiment of the present invention, a heat exchanger heat transfer tube bending device is provided.

[0027] like Figures 1-3 As shown, the heat exchanger heat transfer tube bending device according to an embodiment of the present invention includes: an assembly plate 1 mounted on a gantry frame, the bottom end of the assembly plate 1 is provided with an adjustment mechanism 2, a stamping cylinder 3 and a bearing mechanism 8, and the stamping cylinder 3 is adjusted horizontally along the assembly plate 1 by the adjustment mechanism 2.

[0028] An auxiliary rod 4 is connected to the output end of the stamping cylinder 3. A stamping plate 5 is movably connected to the end of the auxiliary rod 4. An upper pressing rod 6 and a lower pressing rod 7 are movably connected to the top and bottom ends of the stamping plate 5, respectively. A support seat 13 is movably connected to the upper pressing rod 6. The support seat 13 is fixedly connected to the bottom end of the assembly plate 1. An extrusion seat 9 is movably connected to the end of the lower pressing rod 7. An extrusion arm 10 is provided on both sides of the bottom end of the extrusion seat 9. An extrusion arm 10 is provided in an inclined manner. Several adjustment holes 11 are provided in the extrusion arm 10. An extrusion rod 12 is fixedly inserted in the adjustment holes 11.

[0029] The supporting mechanism 8 includes: upright arms 81 symmetrically fixed to the bottom end of the assembly plate 1, a supporting plate 82 fixedly connected between the bottom ends of the upright arms 81, a supporting platform 83 at the top of the supporting plate 82, an assembly groove 84 inside the supporting platform 83, a bending die 85 movably disposed inside the assembly groove 84, a bending groove 86 adapted to the heat transfer tube model inside the bending die 85, and the bending die 85 is adapted to the extrusion seat 9;

[0030] Among them, the assembly groove 84 is provided with protrusions 87 for limiting on both sides, and the bottom end of the bending die 85 is provided with a groove 88 that matches the protrusions 87. The protrusions 87 and the groove 88 are respectively V-shaped structures.

[0031] The adjustment mechanism 2 includes: a slide rail 21 fixedly mounted on the bottom end of the mounting plate 1, a slide plate 22 slidably sleeved on the bottom end of the slide rail 21, and a stamping cylinder 3 fixed on the slide plate 22.

[0032] Using the above technical solution, during use, the corresponding bending die 85 is selected in advance according to the diameter and bending requirements of the heat transfer tube to be processed. The bending die 85 is precisely installed in the assembly groove 84 of the support platform 83 by engaging the protrusion 87 in the assembly groove 84 through the groove 88 at the bottom. Then, according to the bending angle requirements, the extrusion rod 12 is installed in the corresponding adjustment hole 11 on the extrusion arm 10. Next, the slide plate 22 is pushed to slide along the slide rail 21 to adjust the horizontal position of the stamping cylinder 3, so that the position of the extrusion seat 9 and the bending die 85 are aligned. Correspondingly, the heat transfer tube to be processed is then placed in the bending groove 86 of the bending die 85, and the stamping cylinder 3 is started. The stamping cylinder 3 drives the stamping plate 5 to move downward through the auxiliary rod 4. During the movement of the stamping plate 5, the upper pressure rod 6 remains stable under the support of the support seat 13, and the lower pressure rod 7 pushes the extrusion seat 9 to move downward. The extrusion arms 10 on both sides of the extrusion seat 9 apply pressure to the heat transfer tube through the extrusion rod 12. Under the cooperation of the extrusion rod 12 and the bending die 85, the heat transfer tube bends along the bending groove 86 to achieve the bending process.

[0033] During the stamping process, the universal joint between the stamping plate 5 and the auxiliary rod 4 allows the stamping plate 5 to self-adjust at a certain angle, ensuring that the upper pressure rod 6 and the lower pressure rod 7 are subjected to uniform force. After bending is completed, the stamping cylinder 3 is closed, and the stamping cylinder 3 drives the extrusion seat 9 to reset, and the processed heat transfer tube can be taken out. If it is necessary to process heat transfer tubes of different specifications, it is only necessary to replace the corresponding bending die 85 and adjust the installation position of the extrusion rod 12 and the horizontal position of the stamping cylinder 3. The operation is convenient and highly versatile.

[0034] In summary, by utilizing the above-mentioned technical solution of this invention, the adjustable extrusion rod, in conjunction with the detachable and replaceable bending die, can flexibly adapt to the processing requirements of heat transfer tubes with different diameters and bending angles. This eliminates the need to purchase multiple specialized equipment, effectively reducing production costs and improving equipment utilization. Regarding processing accuracy, the V-shaped protrusions and grooves work together to achieve precise positioning of the bending die, preventing die misalignment during processing and ensuring the accuracy of the bending angle and product quality. Operation is convenient and efficient; the adjustment mechanism uses a sliding rail and plate combination structure, allowing for quick and stable adjustment of the stamping cylinder position. The entire processing flow is simple and easy to operate, significantly improving processing efficiency and making it suitable for large-scale production. Furthermore, the overall structural design is reasonable and stable; the support base provides stable support for the upper pressure rod, and the universal joint connection between the stamping plate and the auxiliary rod ensures uniform force distribution, resulting in stable and reliable operation of the device and a longer service life.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Those skilled in the art, upon considering the disclosure in the specification and embodiments, will readily conceive of other embodiments of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0036] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A heat exchanger heat transfer tube bending device, characterized in that, include: The assembly plate (1) is mounted on the gantry frame. The bottom end of the assembly plate (1) is provided with an adjustment mechanism (2), a stamping cylinder (3) and a bearing mechanism (8). The stamping cylinder (3) is adjusted horizontally along the assembly plate (1) by the adjustment mechanism (2). The bearing mechanism (8) is used to support the heat transfer tube of the heat exchanger and is adapted to the stamping cylinder (3) for bending processing. The output end of the stamping cylinder (3) is connected to an auxiliary rod (4), and the end of the auxiliary rod (4) is movably connected to a stamping plate (5). The top and bottom ends of the stamping plate (5) are respectively movably connected to an upper pressure rod (6) and a lower pressure rod (7). The upper pressure rod (6) is movably connected to a support seat (13), and the support seat (13) is fixedly connected to the bottom end of the assembly plate (1). The end of the lower pressure rod (7) is movably connected to an extrusion seat (9), and the bottom ends of the extrusion seat (9) are respectively provided with extrusion arms (10) arranged at an inclination.

2. The heat exchanger heat transfer tube bending device according to claim 1, characterized in that, The bearing mechanism (8) includes: upright arms (81) symmetrically fixed to the bottom end of the assembly plate (1), a bearing plate (82) fixedly connected between the bottom ends of the upright arms (81), a bearing platform (83) provided at the top of the bearing plate (82), an assembly groove (84) provided in the bearing platform (83), a bending die (85) movably provided in the assembly groove (84), a bending groove (86) adapted to the heat transfer tube model provided in the bending die (85), and the bending die (85) is adapted to the extrusion seat (9).

3. The heat exchanger heat transfer tube bending device according to claim 2, characterized in that, The assembly groove (84) has protrusions (87) for limiting the position on both sides, and the bottom end of the bending mold (85) has a groove (88) adapted to the protrusions (87). The protrusions (87) and the groove (88) are V-shaped structures respectively.

4. The heat exchanger heat transfer tube bending device according to claim 1, characterized in that, The adjustment mechanism (2) includes: a slide rail (21) fixedly mounted on the bottom end of the mounting plate (1), a slide plate (22) slidably sleeved on the bottom end of the slide rail (21), and a stamping cylinder (3) fixed on the slide plate (22).

5. The heat exchanger heat transfer tube bending device according to claim 1, characterized in that, The extrusion arm (10) is provided with several adjustment holes (11), and an extrusion rod (12) is fixedly inserted into the adjustment hole (11).

6. The heat exchanger heat transfer tube bending device according to claim 5, characterized in that, The adjustment holes (11) are evenly distributed along the length of the extrusion arm (10).

7. The heat exchanger heat transfer tube bending device according to claim 1, characterized in that, The stamping plate (5) and the auxiliary rod (4) are connected by a universal joint.

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