A special tool for expanding and forming the mouth of a heat exchange pipe

Abstract

The utility model discloses a kind of heat exchange pipe expanding forming special frock, belong to heat exchange pipe expanding forming special frock technical field, its technical scheme main points include equipment ontology, the top of the equipment ontology is fixedly connected with adjusting frame, the top of the adjusting frame is provided with sliding frame, the top of the sliding frame is provided with batch processing mechanism, the top of the batch processing mechanism is provided with lifting assembly, the rear side of the batch processing mechanism is provided with synchronous belt, the top of the lifting assembly is fixedly connected with synchronous sliding assembly, solve the current heat exchange pipe expanding forming special frock more for single root processing design, difficult to realize the batch processing of multiple heat exchange pipes, lead to frequent single clamping and dismounting operation in processing process, not only increase the labor intensity of staff, also cause processing cycle to be longer, overall processing efficiency is low, difficult to meet the efficient production capacity demand of heat exchange pipe expanding processing under the scene of large-scale production.

Description

Technical Field

[0001] This utility model relates to the technical field of special tooling for forming heat exchanger tube expansion joints, and in particular to a special tooling for forming heat exchanger tube expansion joints. Background Technology

[0002] The heat exchanger tube bulging and forming tool is a special tool used in the manufacturing or maintenance of heat exchange equipment to bulge and form the connection between the heat exchanger tube and the tube sheet. By applying a specific force, the heat exchanger tube end undergoes plastic deformation, achieving a tight fit and fixation between the heat exchanger tube and the tube sheet. This ensures the sealing performance, structural strength, and heat transfer efficiency of the connection, meets the operating requirements of the heat exchange equipment under complex conditions such as high temperature and high pressure, and is compatible with the assembly process requirements of the heat exchanger tube and tube sheet.

[0003] When arranging long, curved heat exchange tubes, it is often difficult to fix them well. Due to gravity, the curved surface naturally droops, resulting in uneven coating and easy dripping during coating.

[0004] An existing patent (publication number: CN207805919U) discloses a special tooling for fixing heat exchanger tubes during coating. The main body is formed by processing and assembling various metal parts. The core component is an expansion screw, which consists of an expansion cylinder, a fastening rod, and a fastening nut. A polygonal fixing clip (which can be triangular, quadrangular, or other polygonal shapes depending on the coating requirements) is added and fixed to the outside of the expansion cylinder. A set of fixing slots for use with it is also processed. This utility model is used for fixing the outer surface of heat exchanger tubes during coating. It fundamentally solves the problem of fixing difficulties caused by tube deformation and excessive length when laying heat exchanger tubes, and facilitates multi-angle surface treatment.

[0005] To address the aforementioned issues, existing patents offer solutions. However, most existing specialized tooling for heat exchanger tube expansion and forming is designed for single-tube processing, making it difficult to process multiple heat exchanger tubes in batches. This results in frequent single clamping and disassembly operations during processing, which not only increases the labor intensity of workers but also leads to longer processing cycles and low overall processing efficiency, making it difficult to meet the high-efficiency production capacity requirements for heat exchanger tube expansion processing in large-scale production scenarios.

[0006] To address this, a special tooling for forming the expansion joint of heat exchanger tubes is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a special tooling for heat exchanger tube expansion and forming, which can solve the problem that existing special tooling for heat exchanger tube expansion and forming is mostly designed for single-tube processing, making it difficult to process multiple heat exchanger tubes in batches. This results in frequent single clamping and disassembly operations during the processing, which not only increases the labor intensity of workers, but also causes a long processing cycle and low overall processing efficiency, making it difficult to meet the high-efficiency production capacity requirements for heat exchanger tube expansion processing in large-scale production scenarios.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a special tooling for heat exchanger tube expansion forming, comprising a device body, an adjusting frame fixedly connected to the top of the device body, a sliding frame provided on the top of the adjusting frame, a batch processing mechanism provided on the top of the sliding frame, a lifting component provided on the top of the batch processing mechanism, a synchronous belt provided on the rear side of the batch processing mechanism, a synchronous sliding component fixedly connected to the top of the lifting component, the batch processing mechanism including a positioning frame, a positioning block fixedly connected to the bottom of the positioning frame, a placement frame provided at the bottom of the positioning frame, and the surface of the positioning block engaging with the inner wall of the placement frame.

[0009] Preferably, the bottom of the positioning frame contacts the top of the placement frame, and the inner wall of the placement frame is provided with a positioning groove that cooperates with the positioning block.

[0010] Preferably, the inner wall of the placement rack is provided with a placement groove, and the inner wall of the positioning rack is provided with a limit groove.

[0011] Preferably, a first pre-installed block is fixedly connected to the top of the positioning frame, and a connecting frame is fixedly connected to the bottom of the lifting assembly, wherein the surface of the first pre-installed block is engaged with the inner wall of the connecting frame.

[0012] Preferably, a knob is movably connected to the inner wall of the connecting frame, and the surface of the knob is threadedly connected to the inner wall of the first pre-installed block.

[0013] Preferably, a telescopic rod is fixedly connected to the top of the connecting frame, and the top of the telescopic rod is fixedly connected to the bottom of the synchronous sliding assembly.

[0014] Preferably, the inner wall of the adjusting frame is provided with a threaded rod, and a slider is threadedly connected to the surface of the threaded rod, and the surface of the slider is slidably connected to the inner wall of the adjusting frame.

[0015] Preferably, the top of the slider is fixedly connected to the bottom of the sliding frame, and a second pre-installed block is fixedly connected to the bottom of the placement frame, the surface of the second pre-installed block engaging with the inner wall of the sliding frame.

[0016] Preferably, the inner wall of the sliding frame is movably connected with bolts, and the surface of the bolts is threadedly connected to the inner wall of the second pre-installed block.

[0017] Preferably, the top of the lifting assembly is provided with a synchronizing screw, and the surface of the synchronizing screw is threadedly connected to the inner wall of the synchronizing sliding assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This application sets up a batch processing mechanism. During use, the positioning frame and the placement frame work together to achieve the synchronous bearing and positioning of multiple heat exchange tubes (with the help of an external preliminary limiting structure to uniformly constrain one end of the heat exchange tube). The placement frame can accommodate multiple heat exchange tubes at the same time. The snap-fit ​​structure between the positioning block and the placement frame can ensure the structural stability of the positioning frame after it is closed, and prevent the positioning frame from loosening during the expansion process, which would cause the heat exchange tube to shift. At the same time, the synergistic effect of the positioning frame and the positioning block can limit the axial and radial positions of the heat exchange tube, which is convenient for batch processing.

[0020] 2. This application provides a stable installation foundation for the entire tooling by setting up the equipment body. The adjustment frame provides an installation and guiding foundation for the sliding frame, ensuring the accuracy of the sliding frame's movement trajectory. The sliding frame and the synchronous sliding assembly achieve synchronous movement under the transmission of the synchronous belt, which can drive the batch processing mechanism to complete the shift according to the preset path, realize multi-station continuous processing after one clamping, greatly reduce the clamping operation steps of the workers, reduce labor intensity, and the lifting assembly can drive the positioning frame to accurately lift and lower, realize the rapid positioning and release of the heat exchange tube, and further optimize the processing flow. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the special tooling for forming the expansion joint of the heat exchanger tube according to this utility model;

[0022] Figure 2 This is a structural diagram of the adjustment frame of this utility model;

[0023] Figure 3 This is a structural diagram of the slider of this utility model;

[0024] Figure 4 This is a structural diagram of the batch processing mechanism of this utility model;

[0025] Figure 5 This is a structural diagram of the synchronous belt of this utility model;

[0026] Figure 6 This is a structural diagram of the lifting assembly of this utility model.

[0027] In the diagram, 1. Equipment body; 2. Batch processing mechanism; 201. Positioning frame; 202. Positioning block; 203. Placement frame; 3. Adjustment frame; 4. Sliding frame; 5. Lifting assembly; 6. Synchronous belt; 7. Synchronous sliding assembly; 8. Positioning groove; 9. Placement groove; 10. Limiting groove; 11. First pre-assembly block; 12. Connecting frame; 13. Knob; 14. Telescopic rod; 15. Threaded rod; 16. Slider; 17. Second pre-assembly block; 18. Bolt; 19. Synchronous screw. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 The present invention provides the following technical solution:

[0030] A special tooling for heat exchanger tube expansion forming includes a device body 1. An adjusting frame 3 is fixedly connected to the top of the device body 1. A sliding frame 4 is provided on the top of the adjusting frame 3. A batch processing mechanism 2 is provided on the top of the sliding frame 4. A lifting component 5 is provided on the top of the batch processing mechanism 2. A synchronous belt 6 is provided on the rear side of the batch processing mechanism 2. A synchronous sliding component 7 is fixedly connected to the top of the lifting component 5. The batch processing mechanism 2 includes a positioning frame 201. A positioning block 202 is fixedly connected to the bottom of the positioning frame 201. A placement frame 203 is provided at the bottom of the positioning frame 201. The surface of the positioning block 202 is engaged with the inner wall of the placement frame 203.

[0031] In this embodiment: by setting up a batch processing mechanism 2, multiple heat exchange tubes are simultaneously supported and positioned through the cooperation of the positioning frame 201 and the placement frame 203 (with the help of an external preliminary limiting structure to uniformly constrain one end of the heat exchange tubes). The placement frame 203 can accommodate multiple heat exchange tubes at the same time. The snap-fit ​​structure between the positioning block 202 and the placement frame 203 can ensure the structural stability of the positioning frame 201 after it is closed, and prevent the positioning frame 201 from loosening during the expansion process, which would cause the heat exchange tubes to shift. At the same time, the synergistic effect of the positioning frame 201 and the positioning block 202 can limit the axial and radial positions of the heat exchange tubes, facilitating the process. For batch processing, the equipment body 1 provides a stable installation foundation for the entire tooling. The adjusting frame 3 provides an installation and guiding foundation for the sliding frame 4, ensuring the accuracy of the sliding frame 4's movement trajectory. The sliding frame 4 and the synchronous sliding assembly 7 move synchronously under the transmission of the synchronous belt 6, which can drive the batch processing mechanism 2 to complete the shift according to the preset path, realizing continuous processing at multiple stations after one clamping, greatly reducing the clamping operation steps of the workers and reducing labor intensity. The lifting assembly 5 can drive the positioning frame 201 to accurately lift and lower, realizing the rapid positioning and release of the heat exchange tube, further optimizing the processing flow.

[0032] Specifically, such as Figure 4 As shown, the bottom of the positioning frame 201 contacts the top of the placement frame 203, and the inner wall of the placement frame 203 is provided with a positioning groove 8 that cooperates with the positioning block 202.

[0033] Specifically, such as Figure 4 As shown, the inner wall of the placement rack 203 is provided with a placement groove 9, and the inner wall of the positioning rack 201 is provided with a limiting groove 10.

[0034] Specifically, such as Figure 3 , Figure 4 As shown, the top of the positioning frame 201 is fixedly connected to the first pre-installed block 11, and the bottom of the lifting assembly 5 is fixedly connected to the connecting frame 12. The surface of the first pre-installed block 11 is engaged with the inner wall of the connecting frame 12.

[0035] In this embodiment: the positioning groove 8 opened on the inner wall of the placement frame 203 facilitates the positioning block 202 to be fixed on the inner wall of the placement frame 203 through the positioning groove 8; the placement groove 9 opened on the inner wall of the placement frame 203 facilitates the initial placement of the heat exchange tube through the placement groove 9; the limiting groove 10 set on the inner wall of the positioning frame 201 facilitates the positioning frame 201 to limit the heat exchange tube through the limiting groove 10; by setting the first pre-installed block 11 and the connecting frame 12, the first pre-installed block 11 is fixed in position with the positioning frame 201 during use, which facilitates the subsequent installation of the first pre-installed block 11 on the inner wall of the connecting frame 12 by the positioning frame 201.

[0036] Specifically, such as Figure 3 , Figure 4 As shown, a knob 13 is movably connected to the inner wall of the connecting frame 12, and the surface of the knob 13 is threadedly connected to the inner wall of the first pre-installed block 11.

[0037] Specifically, such as Figure 6 As shown, a telescopic rod 14 is fixedly connected to the top of the connecting frame 12, and the top of the telescopic rod 14 is fixedly connected to the bottom of the synchronous sliding assembly 7.

[0038] In this embodiment: By setting a knob 13, the knob 13 can be rotated on the inner wall of the connecting frame 12 and the first pre-installed block 11 during use, so that the position of the first pre-installed block 11 can be restricted by the knob 13. By setting a telescopic rod 14, the position of the connecting frame 12 can be fixed by the telescopic rod 14 during use, so that the connecting frame 12 can be raised and lowered stably by the telescopic rod 14, and the connection frame 12 can be prevented from getting stuck during the raising and lowering.

[0039] Specifically, such as Figure 3 , Figure 5 As shown, the inner wall of the adjusting frame 3 is provided with a threaded rod 15, and a slider 16 is threadedly connected to the surface of the threaded rod 15. The surface of the slider 16 is slidably connected to the inner wall of the adjusting frame 3.

[0040] Specifically, such as Figure 3 , Figure 4 As shown, the top of the slider 16 is fixedly connected to the bottom of the sliding frame 4, and the bottom of the placement frame 203 is fixedly connected to the second pre-installed block 17. The surface of the second pre-installed block 17 is engaged with the inner wall of the sliding frame 4.

[0041] Specifically, such as Figure 3 , Figure 4 As shown, the inner wall of the sliding frame 4 is movably connected with bolts 18, and the surface of bolts 18 is threadedly connected to the inner wall of the second pre-installed block 17.

[0042] Specifically, such as Figure 6 As shown, a synchronous screw 19 is provided on the top of the lifting assembly 5, and the surface of the synchronous screw 19 is threadedly connected to the inner wall of the synchronous sliding assembly 7.

[0043] In this embodiment: By setting a threaded rod 15 and a slider 16, the slider 16 is fixed to the position of the sliding frame 4 during use, which facilitates the subsequent sliding of the slider 16 on the inner wall of the adjusting frame 3 by the threaded rod 15. Simultaneously, the slider 16 moves the sliding frame 4 to perform synchronous displacement. By setting a second pre-installation block 17, the second pre-installation block 17 is fixed to the position of the placement frame 203 during use, which facilitates the placement frame 203 to drive the second pre-installation block 17 to be installed on the inner wall of the sliding frame 4, thus facilitating the pre-installation of the placement frame 203. Bolt 18 is used to rotate on the inner wall of the sliding frame 4 and the second pre-installed block 17 during use. This allows the position of the second pre-installed block 17 to be restricted by the bolt 18, facilitating the stable placement of the subsequent placement frame 203. By setting a synchronous screw 19, which is threadedly connected to the synchronous sliding assembly 7, power is transmitted to the synchronous sliding assembly 7. This ensures that the synchronous sliding assembly 7 drives the lifting assembly 5 and the batch processing mechanism 2 to achieve smooth and synchronous movement, ensuring the consistency of accuracy in multi-station continuous processing and significantly improving batch processing efficiency.

[0044] Working Principle: During the use of the equipment body 1, the batch processing mechanism 2 is set up. During use, the positioning frame 201 and the placement frame 203 cooperate to realize the synchronous bearing and positioning of multiple heat exchange tubes (in conjunction with the external preliminary limiting structure to uniformly constrain one end of the heat exchange tubes). The placement frame 203 can accommodate multiple heat exchange tubes at the same time. The snap-fit ​​structure between the positioning block 202 and the placement frame 203 can ensure the structural stability of the positioning frame 201 after it is closed, and prevent the positioning frame 201 from loosening during the expansion process, which would cause the heat exchange tubes to shift. At the same time, the synergistic effect of the positioning frame 201 and the positioning block 202 can limit the axial and radial positions of the heat exchange tubes. This facilitates batch processing. By setting up the equipment body 1, a stable installation foundation is provided for the entire tooling. The adjusting frame 3 provides the installation and guiding foundation for the sliding frame 4, ensuring the accuracy of the sliding frame 4's movement trajectory. The sliding frame 4 and the synchronous sliding assembly 7 achieve synchronous movement under the transmission action of the synchronous belt 6, which can drive the batch processing mechanism 2 to complete the shift according to the preset path, realizing continuous processing at multiple stations after one clamping, greatly reducing the clamping operation steps of the workers and reducing labor intensity. The lifting assembly 5 can drive the positioning frame 201 to accurately lift and lower, realizing the rapid positioning and release of the heat exchange tube, further optimizing the processing flow.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special tooling for forming heat exchanger tube expansion joints, comprising a device body (1), characterized in that: An adjustment frame (3) is fixedly connected to the top of the equipment body (1). A sliding frame (4) is provided on the top of the adjustment frame (3). A batch processing mechanism (2) is provided on the top of the sliding frame (4). A lifting component (5) is provided on the top of the batch processing mechanism (2). A synchronous belt (6) is provided on the rear side of the batch processing mechanism (2). A synchronous sliding component (7) is fixedly connected to the top of the lifting component (5). The batch processing mechanism (2) includes a positioning frame (201). A positioning block (202) is fixedly connected to the bottom of the positioning frame (201). A placement frame (203) is provided at the bottom of the positioning frame (201). The surface of the positioning block (202) is engaged with the inner wall of the placement frame (203).

2. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 1, characterized in that: The bottom of the positioning frame (201) contacts the top of the placement frame (203), and the inner wall of the placement frame (203) is provided with a positioning groove (8) that cooperates with the positioning block (202).

3. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 1, characterized in that: The inner wall of the placement rack (203) is provided with a placement groove (9), and the inner wall of the positioning rack (201) is provided with a limiting groove (10).

4. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 1, characterized in that: The top of the positioning frame (201) is fixedly connected to a first pre-installed block (11), and the bottom of the lifting assembly (5) is fixedly connected to a connecting frame (12). The surface of the first pre-installed block (11) is engaged with the inner wall of the connecting frame (12).

5. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 4, characterized in that: A knob (13) is movably connected to the inner wall of the connecting frame (12), and the surface of the knob (13) is threadedly connected to the inner wall of the first pre-installed block (11).

6. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 4, characterized in that: The top of the connecting frame (12) is fixedly connected to a telescopic rod (14), and the top of the telescopic rod (14) is fixedly connected to the bottom of the synchronous sliding assembly (7).

7. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 1, characterized in that: The inner wall of the adjusting frame (3) is provided with a threaded rod (15), and a slider (16) is threadedly connected to the surface of the threaded rod (15). The surface of the slider (16) is slidably connected to the inner wall of the adjusting frame (3).

8. The special tooling for forming the expansion joint of a heat exchanger tube according to claim 7, characterized in that: The top of the slider (16) is fixedly connected to the bottom of the sliding frame (4), and the bottom of the placement frame (203) is fixedly connected to a second pre-installed block (17), the surface of the second pre-installed block (17) is engaged with the inner wall of the sliding frame (4).

9. A special tooling for forming heat exchanger tube expansion joints according to claim 8, characterized in that: The inner wall of the sliding frame (4) is movably connected with a bolt (18), the surface of which is threadedly connected to the inner wall of the second pre-installed block (17).

10. A special tooling for forming the expansion joint of a heat exchanger tube according to claim 1, characterized in that: The top of the lifting assembly (5) is provided with a synchronous screw (19), and the surface of the synchronous screw (19) is threadedly connected to the inner wall of the synchronous sliding assembly (7).

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