Flaring tool and flaring system

Abstract

The utility model provides a flaring tool and a flaring system. The flaring tool comprises a base, a flaring assembly and a flaring assembly, the bottom pressing plate is arranged on the base and used for bearing the heat exchange plate pair, a first limiting structure is arranged on the long edge of one side of the bottom pressing plate, and a second limiting structure is arranged on the short edge of one side of the bottom pressing plate; the top pressing plate is positioned above the bottom pressing plate; the first driving unit is used for pushing the heat exchange plate pair to move in the width direction so that the heat exchange plate pair can abut against the first limiting structure. The second driving unit is used for pushing the heat exchange plate pair to move in the length direction so that the heat exchange plate pair can abut against the second limiting structure. The third driving unit is used for driving the top pressing plate to move in the vertical direction so as to press the heat exchange plate pair; and the fourth driving unit is connected with a punching needle and used for driving the punching needle to move in the width direction so that the punching needle can be inserted into the heat exchange plate pair for flaring. The flaring tool and the flaring system are simple in structure and convenient to operate, the flaring size precision can be effectively improved, and the production efficiency of the heat exchange plate pair is improved.

Description

Technical Field

[0001] The present application relates to the technical field of flaring of heat exchange plates, and in particular to a flaring tool and a flaring system. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It plays an important role in chemical, petroleum, power, food and many other industrial productions. A heat exchanger is formed by stacking heat exchange plate pairs. At present, the manufacturing process of bulging heat exchange plate pairs is generally plate pair welding, opening pipe ports, welding pipe ports, bulging forming, etc. The current pipe port opening process is usually manual operation, which has problems such as uncontrollable pipe port spacing dimensional accuracy, uneven pipe port deformation, poor forming quality, high manufacturing cost, and low production efficiency. Therefore, there is an urgent need for a bulging tooling for heat exchange plate pairs. Utility Model Content

[0003] In view of this, the purpose of this application is to propose a flaring tool and a flaring system to solve the related problems mentioned in the background technology.

[0004] In a first aspect of the present application, there is provided a flaring tool, which is applied to a heat exchange plate pair, comprising: a base; a bottom pressure plate, which is arranged on the base and is used to support the heat exchange plate pair, and a first limiting structure is provided at one long side of the bottom pressure plate, and a second limiting structure is provided at one short side; a top pressure plate, which is located above the bottom pressure plate; a first driving unit, which is installed on the base and is located at the other long side of the bottom pressure plate, and is used to push the heat exchange plate pair to move in the width direction so that the heat exchange plate pair is against the first limiting structure; a second driving unit, which is installed On the base, located at the other short side of the bottom pressure plate, it is used to push the heat exchange plate pair to move in the length direction so that the heat exchange plate pair is against the second limiting structure; the third driving unit is located above the top pressure plate, and is used to drive the top pressure plate to move in the vertical direction to press the heat exchange plate pair; the fourth driving unit is installed on the base, located at one long side of the bottom pressure plate, and the fourth driving unit is connected to a punch needle, which is used to drive the punch needle to move in the width direction so that the punch needle is inserted into the heat exchange plate pair for expansion.

[0005] Furthermore, a guide block opposite to the fourth driving unit is provided on one long side of the bottom pressure plate, and a through hole is provided on the guide block, and the punching needle in the expanded state passes through the through hole.

[0006] Furthermore, a transfer block is provided between the punch pin and the fourth driving unit, and a groove is provided on a side of the guide block close to the fourth driving unit, and the groove is used to accommodate the transfer block.

[0007] Furthermore, a lubrication unit is provided on the side of the guide block away from the fourth drive unit, and the lubrication unit includes a shell, and the shell is respectively connected to spray pipes on both sides along the length direction, and the spray pipes are used to spray lubricating oil to the punch needle; an oil scraper is provided on the side of the shell away from the fourth drive unit, and the punch needle in the expanded state passes through the shell and the oil scraper.

[0008] Furthermore, the bottom pressure plate is connected to a first adapter plate on one side close to the top pressure plate, the size of the first adapter plate is smaller than that of the bottom pressure plate, the first limiting structure is provided on one long side of the first adapter plate, and the second limiting structure is provided on one short side of the first adapter plate; the top pressure plate is connected to a second adapter plate on one side close to the bottom pressure plate, the size of the second adapter plate is smaller than that of the top pressure plate; guide columns are provided at the corners of the bottom pressure plate, the guide columns pass through the top pressure plate, a top plate is provided on the top, and the third driving unit is provided on the top plate.

[0009] Furthermore, pads are provided above the first adapter plate and below the second adapter plate, respectively, and avoidance grooves cooperating with the punching needles are provided on the pads.

[0010] Furthermore, the first limiting structure and the second limiting structure are limiting blocks, the first driving unit, the second driving unit and the third driving unit are air cylinders, and the fourth driving unit is an oil cylinder.

[0011] Furthermore, the first limiting structure includes two limiting blocks arranged at intervals, the second limiting structure includes two limiting blocks arranged at intervals, and one guide column is provided at each of the four corners of the bottom pressure plate.

[0012] Furthermore, the fourth driving unit and the first limiting structure are located on the same side, and the fourth driving unit includes two oil cylinders, each of which is connected to one of the punching needles.

[0013] In the second aspect of the present application, a flaring system is provided, which is applied to a heat exchange plate pair, including: the flaring tooling as described in the first aspect above; a control system, electrically connected to the first drive unit, the second drive unit, the third drive unit and the fourth drive unit; a handling robot, used to transfer the heat exchange plate pair; an air compressor, connected to the first drive unit, the second drive unit and the third drive unit; and a hydraulic station, connected to the fourth drive unit.

[0014] From the above, it can be seen that the expansion tool and expansion system provided by the present application include a base; a bottom pressure plate, which is arranged on the base and is used to carry the heat exchange plate pair, and a first limiting structure is provided at one long side of the bottom pressure plate, and a second limiting structure is provided at one short side; a top pressure plate, which is located above the bottom pressure plate; a first driving unit is installed on the base and is located at the other long side of the bottom pressure plate, and is used to push the heat exchange plate pair to move in the width direction so that the heat exchange plate pair is offset against the first limiting structure; a second driving unit is installed on the base and is located at the other short side of the bottom pressure plate, and is used to push the heat exchange plate pair to move in the length direction so that the heat exchange plate pair is offset against the second limiting structure; a third driving unit is located above the top pressure plate, and is used to drive the top pressure plate to move in the vertical direction to compact the heat exchange plate pair; a fourth The driving unit is installed on the base and is located on one long side of the bottom pressure plate. The fourth driving unit is connected to a punch needle, which is used to drive the punch needle to move along the width direction so that the punch needle is inserted into the heat exchange plate pair for expansion; the first driving unit, the second driving unit cooperate with the first limiting structure and the second limiting structure to position the heat exchange plate pair in the horizontal direction; the third driving unit drives the top pressure plate to cooperate with the bottom pressure plate to fix the heat exchange plate pair in the vertical direction; the fourth driving unit drives the punch needle to move and can be inserted into the fixed heat exchange plate pair for expansion, replacing manual operation, with good expansion stability and high dimensional accuracy, which greatly improves production efficiency; the expansion tooling and expansion system have a simple structure and are easy to operate, which can effectively improve the expansion dimensional accuracy, ensure expansion uniformity, and improve the production efficiency of the heat exchange plate pair. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an expansion tool in an embodiment of the present application;

[0017] Figure 2 This is a schematic top view of the structure of the expansion tooling and the heat exchange plate in the embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the top structure of the bottom pressure plate in the embodiment of the present application;

[0019] Figure 4 This is a structural diagram of the lubrication unit in an embodiment of the present application;

[0020] Figure 5 This is a side view of the heat exchange plate pair after expansion in the embodiment of the present application;

[0021] Figure 6 This is a structural diagram of a flaring system in an embodiment of the present application.

[0022] Figure numerals: 1. Heat exchange plate pair; 2. Base; 3. Bottom pressure plate; 3-1. First adapter plate; 3-2. Guide column; 4. First limiting structure; 5. Second limiting structure; 6. Top pressure plate; 6-1. Second adapter plate; 7. First drive unit; 8. Second drive unit; 9. Third drive unit; 10. Fourth drive unit; 11. Guide block; 11-1. Groove; 12. Punch needle; 12-1. Adapter block; 13. Lubrication unit; 13-1. Shell; 13-2. Spray pipe; 13-3. Scraper; 14. Top plate; 15. Pad; 15-1. Avoidance groove; 16. Control system; 17. Handling robot; 18. Air compressor; 19. Hydraulic station. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It plays an important role in chemical, petroleum, power, food and many other industrial productions. A heat exchanger is formed by stacking heat exchange plate pairs. At present, the manufacturing process of bulging heat exchange plate pairs is generally plate pair welding, opening pipe ports, welding pipe ports, bulging forming, etc. The current pipe port opening process is usually manual operation, which has problems such as uncontrollable pipe port spacing dimensional accuracy, uneven pipe port deformation, poor forming quality, high manufacturing cost, and low production efficiency. Therefore, there is an urgent need for a bulging tooling for heat exchange plate pairs.

[0026] The existing process of opening pipe openings will mark the inlet and outlet positions on the plate pair, and use a conical or flat shovel-type expander to manually expand the openings by knocking. During the expansion process, the size cannot be accurately controlled, and the error in the spacing between the pipes is large; the expanded plates are subjected to instantaneous impact loads, and the elongation and tensile deformation is uneven, with large concentrated deformation and cold work hardening, which is prone to local cracking and affects the service life; the knocking depth of the pipe opening is uncontrollable, the deformation is uneven, and the transition is not smooth, making the piping assembly difficult; the manufacturing cost is high, the production efficiency is low, and it is not conducive to mass production.

[0027] The following is a specific embodiment and combined with Figures 1 to 6 To describe the technical solution of this application in detail.

[0028] In some embodiments of the present application, a flaring tool is provided, which is applied to a heat exchange plate pair 1, such as Figure 1 and Figure 2 As shown, it includes: a base 2; a bottom pressure plate 3, which is arranged on the base 2 and is used to support the heat exchange plate pair 1, and a first limiting structure 4 is provided at one long side of the bottom pressure plate 3, and a second limiting structure 5 is provided at one short side; a top pressure plate 6, which is located above the bottom pressure plate 3; a first driving unit 7, which is installed on the base 2 and is located at the other long side of the bottom pressure plate 3, and is used to push the heat exchange plate pair 1 to move along the width direction so that the heat exchange plate pair 1 is against the first limiting structure 4; a second driving unit 8, which is installed on the base 2 and is located at the bottom pressure plate 3 is located at the other short side of the heat exchange plate pair 1, which is used to push the heat exchange plate pair 1 to move in the length direction so that the heat exchange plate pair 1 is against the second limiting structure 5; the third driving unit 9 is located above the top pressure plate 6, and is used to drive the top pressure plate 6 to move in the vertical direction to press the heat exchange plate pair 1; the fourth driving unit 10 is installed on the base 2, and is located at one long side of the bottom pressure plate 3. The fourth driving unit 10 is connected to a punch 12, which is used to drive the punch 12 to move in the width direction so that the punch 12 is inserted into the heat exchange plate pair 1 for expanding.

[0029] like Figure 1 and Figure 2 As shown in the figure, the L direction is the length direction, the W direction is the width direction, the base 2, the bottom pressure plate 3, and the top pressure plate 6 are, for example, steel plates; a first limiting structure 4 is provided at one long side of the bottom pressure plate 3, and a second limiting structure 5 is provided at one short side. The first limiting structure 4 and the second limiting structure 5 are, for example, limiting blocks.

[0030] A first drive unit 7 and a second drive unit 8 are installed on the base 2. The first drive unit 7 and the second drive unit are, for example, cylinders. The first drive unit 7 is used to push the heat exchange plate pair 1 to move in the width direction so that the heat exchange plate pair 1 is against the first limiting structure 4. The second drive unit 8 is used to push the heat exchange plate pair 1 to move in the length direction so that the heat exchange plate pair 1 is against the second limiting structure 5. By cooperating with the first drive unit 7, the second drive unit 8 and the first limiting structure 4 and the second limiting structure 5, the heat exchange plate pair 1 can be positioned in the horizontal direction.

[0031] A third driving unit 9, such as a cylinder, is connected to the top pressure plate 6. The third driving unit 9 is used to drive the top pressure plate 6 to move in the vertical direction to compress the heat exchange plate pair 1. By driving the top pressure plate 6 and the bottom pressure plate 3 to cooperate with each other, the heat exchange plate pair 1 can be fixed in the vertical direction.

[0032] A fourth drive unit 10, such as a cylinder, is also installed on the base 2. The fourth drive unit 10 is connected to a punch 12. The end of the punch 12 is, for example, a conical structure. The fourth drive unit 10 is used to drive the punch 12 to move along the width direction so that the punch 12 is inserted into the heat exchange plate 1 to expand, replacing manual operation. The expansion stability is good, the dimensional accuracy is high, and the production efficiency is greatly improved.

[0033] After the expansion, the heat exchange plate pair 1 is as follows Figure 5 As shown, the position and size of the flaring can be adjusted according to actual needs. The flaring tooling has a simple structure and is easy to operate. It can effectively improve the flaring dimensional accuracy, ensure the flaring uniformity, and improve the production efficiency of the heat exchange plate pair 1.

[0034] In some embodiments, as Figure 2 As shown, a guide block 11 opposite to the fourth driving unit 10 is provided on one long side of the bottom pressure plate 3 , and a through hole is provided on the guide block 11 , and the punching needle 12 in the expanded state passes through the through hole.

[0035] like Figure 1 and Figure 2 As shown, the base 2 is further provided with a guide block 11, which is provided with a through hole. The punching needle 12 in the expanded state passes through the through hole, which can limit the position of the punching needle 12 and ensure the dimensional accuracy of the expanded mouth.

[0036] In some embodiments, as Figure 1 As shown, a transfer block 12 - 1 is provided between the punch pin 12 and the fourth drive unit 10 , and a groove 11 - 1 is provided on a side of the guide block 11 close to the fourth drive unit 10 , and the groove 11 - 1 is used to accommodate the transfer block 12 - 1 .

[0037] like Figure 1As shown, an adapter block 12-1 is provided between the punch pin 12 and the fourth drive unit 10, and a groove 11-1 is provided on one side of the guide block 11. When expanding the mouth, the groove 11-1 can be plugged into and matched with the adapter block 12-1 to further limit the position of the punch pin 12 and ensure the dimensional accuracy of the expansion.

[0038] In some embodiments, as Figure 2 and Figure 4 As shown, a lubrication unit 13 is provided on the side of the guide block 11 away from the fourth drive unit 10, and the lubrication unit 13 includes a shell 13-1, and the shell 13-1 is respectively connected to spray pipes 13-2 on both sides along the length direction, and the spray pipes 13-2 are used to spray lubricating oil to the punch needle 12; an oil scraper 13-3 is provided on the side of the shell 13-1 away from the fourth drive unit 10, and the punch needle 12 in the expanded state passes through the shell 13-1 and the oil scraper 13-3.

[0039] like Figure 2 As shown, a lubrication unit 13 is provided on the bottom pressure plate 3 for applying lubricating liquid to the punching needle 12 to reduce the friction between the punching needle 12 and the heat exchange plate pair 1 during expansion, thereby reducing damage to the heat exchange plate pair 1 caused by the punching needle 12.

[0040] like Figure 4 As shown, the lubrication unit 13 includes a shell 13-1, and a spray pipe 13-2 is connected to the shell 13-1 along both sides, so that lubricating oil can be sprayed onto the punch needle 12 when the punch needle 12 moves forward; an oil scraper 13-3 is provided on one side of the shell 13-1, and the punch needle 12 in the expanded state passes through the shell 13-1 and the oil scraper 13-3. The oil scraper 13-3 is also provided with a through hole, which can scrape off excess lubricating oil and reduce the contamination of the lubricating oil to the plate.

[0041] In some embodiments, as Figure 1 and Figure 2 As shown, the side of the bottom pressure plate 3 close to the top pressure plate 6 is connected to the first adapter plate 3-1, the size of the first adapter plate 3-1 is smaller than the size of the bottom pressure plate 3, and the first limiting structure 4 is provided on one long side of the first adapter plate 3-1, and the second limiting structure 5 is provided on one short side; the side of the top pressure plate 6 close to the bottom pressure plate 3 is connected to the second adapter plate 6-1, the size of the second adapter plate 6-1 is smaller than the size of the top pressure plate 6; the corners of the bottom pressure plate 3 are provided with guide columns 3-2, the guide columns 3-2 pass through the top pressure plate 6, and a top plate 14 is provided on the top, and the third drive unit 9 is provided on the top plate 14.

[0042] like Figure 1As shown, a first adapter plate 3-1 is provided on the bottom pressure plate 3, and a second adapter plate 6-1 is provided under the top pressure plate 6. The adapter plate is, for example, a steel plate. Guide columns 3-2 are provided at the corners of the bottom pressure plate 3. The guide columns 3-2 pass through the top pressure plate 6. A top plate 14 is provided on the top. A third driving unit 9 is provided on the top plate 14, which can drive the top pressure plate 6 to move along the guide columns 3-2 to ensure accurate positioning; the size of the adapter plate is smaller than that of the pressure plate to avoid spatial conflicts between the heat exchange plate pair 1 and the guide columns 3-2 when taking and placing them.

[0043] In some embodiments, as Figure 1 and Figure 3 As shown, a pad 15 is provided above the first adapter plate 3 - 1 and below the second adapter plate 6 - 1 , respectively. The pad 15 is provided with an avoidance groove 15 - 1 that cooperates with the punching needle 12 .

[0044] like Figure 1 As shown, a pad 15 is embedded on the adapter plate. The pad 15 is made of nylon, for example, to avoid scratching the plate. An avoidance groove 15-1 is provided on the pad 15. The avoidance groove 15-1 is, for example, a semi-conical structure, which can ensure that the outer dimensions of the pipe mouth are consistent when expanding.

[0045] In some embodiments, as Figure 1 and Figure 2 As shown, the first limiting structure 4 includes two limiting blocks arranged at intervals, the second limiting structure 5 includes two limiting blocks arranged at intervals, and a guide column 3-2 is provided at each of the four corners of the bottom pressure plate 3.

[0046] The top plate 14 is, for example, a steel plate, the guide column 3-2 is, for example, a steel column, and the limit block is, for example, a steel block. Figure 2 As shown, four limit blocks are provided, positioned at right angles to ensure the horizontal accuracy of the heat exchange plate pair 1 during compression; four guide columns 3-2 are provided to ensure the position accuracy of the top pressure plate 6 and the bottom pressure plate 3 during compression.

[0047] In some embodiments, as Figure 2 As shown, the fourth driving unit 10 and the first limiting structure 4 are located on the same side. The fourth driving unit 10 includes two oil cylinders, and each of the oil cylinders is connected to one of the punching needles 12 .

[0048] like Figure 2 As shown, the fourth driving unit 10 and the first limiting structure 4 are located on the same side to avoid affecting the operation of the first driving unit 7; there are two punching needles 12, which can expand the pipe inlet and pipe outlet at the same time.

[0049] In some embodiments of the present application, a flaring system is provided, which is applied to a heat exchange plate pair 1, such as Figure 6As shown, it includes: the flaring tooling as described in any of the above embodiments; a control system 16, electrically connected to the first drive unit 7, the second drive unit 8, the third drive unit 9 and the fourth drive unit 10; a handling robot 17, used to transfer the heat exchange plate pair 1; an air compressor 18, connected to the first drive unit 7, the second drive unit 8 and the third drive unit 9; and a hydraulic station 19, connected to the fourth drive unit 10.

[0050] The control system 16 can control the first drive unit 7, the second drive unit 8, the third drive unit 9 and the fourth drive unit 10 to perform the expansion work; there can be one or more handling robots 17, which can replace manual transfer of the heat exchange plate pair 1; the air compressor 18 and the hydraulic station 19 provide power for the drive unit.

[0051] The flaring method of the flaring system includes: a handling robot 17 grabs the heat exchange plate pair 1 and places it in the flaring tooling, and starts the first drive unit 7 and the second drive unit 8 to push the heat exchange plate pair 1 for horizontal positioning; after positioning is completed, the first drive unit 7 and the second drive unit 8 are retracted, and the third drive unit 9 is started to press the heat exchange plate pair 1; the fourth drive unit 10 is started to drive the punch 12 to move slowly, punching open the heat exchange plate pair 1 for flaring; after flaring is completed, the third drive unit 9 and the fourth drive unit 10 are retracted, and the handling robot 17 removes the heat exchange plate pair 1.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0053] In addition, when details are set forth to describe exemplary embodiments of the present application, it will be apparent to those skilled in the art that the present application embodiments can be implemented without these details or with variations in these details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0054] While the present application has been described in conjunction with the embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0055] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A flaring tool, applied to a heat exchange plate pair, characterized in that: include: base; A bottom pressure plate is provided on the base and is used to support the heat exchange plate pair. A first limiting structure is provided on one long side of the bottom pressure plate, and a second limiting structure is provided on one short side of the bottom pressure plate. A top pressure plate, located above the bottom pressure plate; a first driving unit, mounted on the base and located at the other long side of the bottom pressure plate, for pushing the heat exchange plate pair to move along the width direction so that the heat exchange plate pair abuts against the first limiting structure; a second driving unit, mounted on the base and located at the other short side of the bottom pressure plate, for pushing the heat exchange plate pair to move along the length direction so that the heat exchange plate pair abuts against the second limiting structure; a third driving unit, located above the top pressure plate, for driving the top pressure plate to move in a vertical direction to compress the heat exchange plate pair; The fourth driving unit is installed on the base and is located on one long side of the bottom pressure plate. The fourth driving unit is connected to a punch needle and is used to drive the punch needle to move along the width direction so that the punch needle is inserted into the heat exchange plate pair for expansion.

2. The flaring tool according to claim 1, characterized in that: A guide block opposite to the fourth driving unit is provided on one long side of the bottom pressure plate. A through hole is provided on the guide block, and the punching needle in the expanded state passes through the through hole.

3. The flaring tool according to claim 2, characterized in that: A transfer block is provided between the punching needle and the fourth driving unit. A groove is provided on a side of the guide block close to the fourth driving unit, and the groove is used to accommodate the transfer block.

4. The flaring tool according to claim 2, characterized in that: A lubrication unit is provided on the side of the guide block away from the fourth drive unit, and the lubrication unit includes a shell. The shell is respectively connected to spray pipes on both sides along the length direction, and the spray pipes are used to spray lubricating oil to the punch needle; an oil scraper is provided on the side of the shell away from the fourth drive unit, and the punch needle in the expanded state passes through the shell and the oil scraper.

5. The flaring tool according to claim 1, characterized in that: A first adapter plate is connected to a side of the bottom pressure plate close to the top pressure plate, the size of the first adapter plate is smaller than that of the bottom pressure plate, and the first limiting structure is provided on one long side of the first adapter plate, and the second limiting structure is provided on one short side of the first adapter plate; A second adapter plate is connected to one side of the top pressure plate close to the bottom pressure plate, and the size of the second adapter plate is smaller than that of the top pressure plate; Guide columns are provided at the corners of the bottom pressure plate, and the guide columns pass through the top pressure plate. A top plate is provided on the top, and the third driving unit is provided on the top plate.

6. The flaring tool according to claim 5, characterized in that: Pads are respectively provided above the first adapter plate and below the second adapter plate, and avoidance grooves matched with the punching needles are provided on the pads.

7. The flaring tool according to claim 6, characterized in that: The first limiting structure and the second limiting structure are limiting blocks, the first driving unit, the second driving unit and the third driving unit are air cylinders, and the fourth driving unit is an oil cylinder.

8. The flaring tool according to claim 7, characterized in that: The first limiting structure includes two limiting blocks arranged at intervals, the second limiting structure includes two limiting blocks arranged at intervals, and one guide column is provided at each of the four corners of the bottom pressure plate.

9. The flaring tool according to claim 1, characterized in that: The fourth driving unit and the first limiting structure are located on the same side. The fourth driving unit includes two oil cylinders, and each of the oil cylinders is connected to one of the punching needles.

10. A flaring system, applied to a heat exchange plate pair, characterized in that: include: The flaring tool according to any one of claims 1 to 9; a control system, electrically connected to the first drive unit, the second drive unit, the third drive unit, and the fourth drive unit; A transport robot, used for transferring the heat exchange plate pair; an air compressor connected to the first drive unit, the second drive unit, and the third drive unit; A hydraulic station is connected to the fourth drive unit.

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