Device for restraining shaking of heat exchange tube during heat exchange tube machining and machining equipment

Abstract

The utility model relates to a device for restraining shaking of a heat exchange tube in the heat exchange tube machining period and machining equipment, and the device comprises a supporting roller pair which comprises a first supporting roller and a second supporting roller which are arranged in the first horizontal direction; an advancing and retreating part configured to advance and retreat in translation in a first horizontal direction; a swinging part which is installed on the advancing and retreating part in a manner of swinging around a second horizontal direction perpendicular to the first horizontal direction; a platen roller mounted to the swing portion so as to rotate around a second horizontal direction, the platen roller being switched between a first position and a second position by advancing and retreating of the advancing and retreating portion and swinging of the swing portion; the pressing roller is located at the first position and presses the heat exchange tube downwards in the mode that the peripheral surface of the pressing roller is in rolling contact with the peripheral surface of the heat exchange tube; the compression roller at the second position leaves the heat exchange tube, and when observed downwards, each of the compression roller and the swing part is located on the side, opposite to the first supporting roller, of the second supporting roller in the first horizontal direction in a spaced mode.

Description

Technical Field

[0001] The present application relates to the technical field of tube processing, and in particular to a device and processing equipment for suppressing the shaking of a heat exchange tube during the processing of the heat exchange tube. Background Art

[0002] In a nuclear power unit, a Moisture Separator Reheater (MSR) is an indispensable key device. The inside of the Moisture Separator Reheater has a large number of high-efficiency heat exchange tubes, and the length of the heat exchange tubes can reach nearly 40 meters. Generally, external fins and internal strengthening threads (or internal fins) need to be processed on the wall surface of each high-efficiency heat exchange tube according to requirements.

[0003] When processing the internal and external fins of such an ultra-long heat exchange tube, the heat exchange tube is led out of the finning machine by rotating and extruding the processing tool in the finning machine and rotating around its own axis in a spiral manner. Due to the large length-diameter ratio of this heat exchange tube, it is prone to intense shaking (jumping) when being led out in a spiral manner. If not controlled, the heat exchange tube will produce significant uncontrollable deformation.

[0004] Regarding the above problems, if a pressure roller that moves vertically up and down is used to limit the shaking of the heat exchange tube, although the shaking suppression effect can be achieved, even if this pressure roller leaves the anti-shaking position in a vertically upward movement manner, it will still occupy the upper space, making it difficult to take out the processed heat exchange tube upward and put the heat exchange tube to be processed downward by using related equipment. Summary of the Invention

[0005] In view of this, the present application provides a device for suppressing the shaking of a heat exchange tube during the processing of the heat exchange tube and processing equipment having such a device.

[0006] In a first aspect, a device for suppressing the shaking of a heat exchange tube during the processing of the heat exchange tube is provided, including:

[0007] A pair of support rollers, which includes a first support roller and a second support roller arranged in a first horizontal direction. Each of the first support roller and the second support roller can rotate around a second horizontal direction perpendicular to the first horizontal direction, and the first support roller and the second support roller are configured to upwardly support the heat exchange tube in such a way that the outer peripheral surfaces of the first support roller and the second support roller are in rolling contact with the outer peripheral surface of the heat exchange tube;

[0008] An advancing and retreating part, which is configured to advance and retreat translationally in the first horizontal direction;

[0009] A swinging part, which is installed on the advancing and retreating part in a way of swinging around the second horizontal direction;

[0010] A pressing roller is mounted on the swinging part so as to rotate around the second horizontal direction, and is configured to switch between a first position and a second position by the advancement and retraction of the advancing and retracting part and the swinging of the swinging part;

[0011] The pressing roller in the first position presses the heat exchange tube downward in such a way that its outer peripheral surface rolls and contacts the outer peripheral surface of the heat exchange tube;

[0012] The pressing roller in the second position is separated from the heat exchange tube, and when viewed downward, each of the pressing roller and the swinging part is located on the side opposite to the first support roller of the second support roller at a distance in the first horizontal direction.

[0013] In some possible embodiments, when the pressing roller is in the first position, when viewed downward, the pressing roller is located at the central position between the first support roller and the second support roller.

[0014] In some possible embodiments, the swinging part has a first swinging limit position close to the pair of support rollers and a second swinging limit position far from the pair of support rollers.

[0015] In some possible embodiments, the device further includes:

[0016] A rotating shaft that extends in the second horizontal direction and connects the swinging part to the advancing and retracting part, defining the swinging axis of the swinging part;

[0017] A swing rod having a first end fixed to the rotating shaft, a second end opposite to the first end, and an intermediate portion extending between the first end and the second end;

[0018] A second cylinder having a second cylinder body and a second piston rod that can extend and retract relative to the second cylinder body, wherein the second cylinder body is connected to the advancing and retracting part so as to rotate around the second horizontal direction, and the second piston rod is connected to the intermediate portion of the swing rod so as to rotate around the second horizontal direction;

[0019] An adjusting screw is rotatably screwed to the advancing and retracting part and has a rod head extending toward the second end of the swing rod, and the rod head defines the first swinging limit position of the swinging part in a way that blocks the second end of the swing rod;

[0020] The adjusting screw is configured to: by rotating the adjusting screw, adjust the position of the rod head, and further adjust the first swinging limit position of the swinging part.

[0021] In some possible embodiments, the swinging part includes:

[0022] First and second arms spaced apart from each other, with one end of each fixed to opposite ends of the rotating shaft;

[0023] Support shaft, connected between the other ends of the first and second arms;

[0024] Wherein, the pressure roller is mounted on the support shaft.

[0025] In some possible embodiments, the pressure roller is a rubber roller.

[0026] In some possible embodiments, further comprising:

[0027] Substrate;

[0028] Guide rail, extending along the first horizontal direction and fixed to the substrate, wherein the advancing and retreating part is slidably connected to the guide rail via a slider;

[0029] First cylinder, having a first cylinder body and a first piston rod capable of telescoping relative to the first cylinder body in the first horizontal direction, wherein the first cylinder body is fixed to the substrate and the first piston rod is connected to the advancing and retreating part.

[0030] In some possible embodiments, the advancing and retreating part has a long hole extending along the first horizontal direction, and the slider is adjustably fixed to the advancing and retreating part via a bolt passing through the long hole.

[0031] In a second aspect, a processing device is provided, comprising:

[0032] Fin forming machine, configured to form protruding fins on the outer peripheral surface and / or inner peripheral surface of the heat exchange tube;

[0033] The device according to any one of the first aspect, disposed on one side of the fin forming machine along the second horizontal direction.

[0034] In some possible embodiments, a plurality of the devices are provided, and the plurality of devices are arranged at intervals along the second horizontal direction.

[0035] According to the device for suppressing the jitter of the heat exchange tube during the processing of the heat exchange tube provided in the present application, when the pressure roller leaves the support roller pair, sufficient operating space can be left above the support roller pair, which is not only convenient for taking out the processed heat exchange tube upward, but also convenient for placing the heat exchange tube to be processed downward onto the support roller pair. Moreover, by adjusting and controlling the displacement magnitudes of the advancing and retreating part and the swinging part of the device, it can be applied to the anti-jitter processing of heat exchange tubes with various pipe diameters. Description of the Drawings

[0036] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present application and do not limit the present application.

[0037] Figure 1 It is a schematic diagram of a jitter suppression device provided by an embodiment of the present application.

[0038] Figure 2 It is Figure 1 a side view schematic diagram, in which the dashed part shows the state when the pressure roller is in the second position.

[0039] Figure 3 It is Figure 1 a side view schematic diagram, in which the positions of relevant components during the operation of the jitter suppression device on a heat exchange tube with a large diameter are shown using a dotted line.

[0040] Figure 4 It is Figure 1 a top view.

[0041] Figure 5 It is Figure 4 a right view.

[0042] Figure 6 It is a schematic diagram of a processing device provided by an embodiment of the present application.

[0043] Figure 7 It is a flowchart of a control method for a jitter suppression device provided by an embodiment of the present application.

[0044] Explanation of reference numerals:

[0045] T - heat exchange tube;

[0046] DR1 - first horizontal direction, DR2 - second horizontal direction;

[0047] P1 - first position, P2 - second position, S1 - first swing limit position, S2 - second swing limit position;

[0048] AX1, AX2, AX3, AX4, AX5, AX6 - rotation axes;

[0049] 100 - jitter suppression device, 200 - finning machine;

[0050] 1 - support roll pair, 2 - advancing and retreating part, 3 - swinging part, 4 - pressure roller;

[0051] 5 - first support roll, 6 - second support roll;

[0052] 7 - base plate, 8 - guide rail;

[0053] 9 - First cylinder, 9a - First cylinder block, 9b - First piston rod;

[0054] 10 - L-shaped vertical plate;

[0055] 11 - Lower connecting plate, 11a - Long strip hole;

[0056] 12 - Upper connecting plate;

[0057] 13 - Slide block;

[0058] 14 - Rotating shaft;

[0059] 15 - Swing rod, 15a - First end, 15b - Second end, 15c - Middle part;

[0060] 16 - Second cylinder, 16a - Second cylinder block, 16b - Second piston rod;

[0061] 17 - Adjusting screw;

[0062] 18 - First arm;

[0063] 19 - Second arm;

[0064] 20 - Support shaft;

[0065] 21 - H-shaped steel. Detailed implementation manners

[0066] To make the objectives, technical solutions and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of the embodiments. Based on the described embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application. It can be understood that, without conflict, some technical means described in the various embodiments herein may be replaced or combined with each other.

[0067] In the description of this application, if there are terms such as "first" and "second", they are only used to distinguish the described objects and do not have any sequential or technical meanings. Thus, the objects defined with "first", "second", etc. may explicitly or implicitly include one or more of such objects. Moreover, for example, the term "first element" itself does not imply the existence of a "second element", and the term "second element" itself does not imply the existence of a "first element". In addition, similar terms such as "one" or "a" do not represent a quantity limitation, but rather indicate the existence of at least one, and "multiple" means not less than two.

[0068] In the description of the present application, the terms "comprising" and "having" indicate the presence of the described features, numbers, operations, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, and / or combinations thereof.

[0069] In the description of the present application, if there are similar terms such as "configured to" or "constructed to", depending on the context, they can generally be interchanged with "capable of", "designed to", "for", or "able to".

[0070] In the description of the present application, references to "one embodiment" or "some embodiments" etc. mean that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way.

[0071] Figures 1 to 5 Shown is a device for suppressing the vibration of the heat exchange tube T during the processing of the heat exchange tube T provided by an embodiment of the present application, hereinafter simply referred to as the vibration suppression device 100. The vibration suppression device 100 mainly includes a pair of support rollers 1, a retractable part 2, a swing part 3, and a pressure roller 4.

[0072] The pair of support rollers 1 includes a first support roller 5 and a second support roller 6 arranged in a first horizontal direction DR1. Each of the first support roller 5 and the second support roller 6 can rotate about a second horizontal direction DR2 perpendicular to the first horizontal direction DR1. That is, the rotation axes AX1 of the first support roller 5 and AX2 of the second support roller 6 extend along the second horizontal direction DR2. And the first support roller 5 and the second support roller 6 are configured to upwardly support the heat exchange tube T in such a manner that the outer peripheral surfaces of both the first support roller 5 and the second support roller 6 are in rolling contact with the outer peripheral surface of the heat exchange tube T.

[0073] More specifically, the first support roller 5 and the second support roller 6 are arranged on the top of the H-shaped steel 21, and the H-shaped steel 21 extends along the second horizontal direction DR2 and is arranged in an I-shaped posture.

[0074] The advancing and retracting part 2 is configured to translate and advance and retract in the first horizontal direction DR1. Specifically, the vibration suppression device 100 further includes a horizontally arranged substrate 7, two guide rails 8 fixed to the upper surface of the substrate 7, and a first cylinder 9 mounted on the substrate 7. The two guide rails 8 extend parallel to each other in the first horizontal direction DR1, and the advancing and retracting part 2 is slidably connected to the two guide rails 8 via a slider 13 at its bottom, so as to drive the advancing and retracting of the advancing and retracting part 2 through the guide rails 8. The first cylinder 9 has a first cylinder body 9a and a first piston rod 9b that can expand and contract relative to the first cylinder body 9a in the first horizontal direction DR1. Among them, the first cylinder body 9a is fixed to the upper surface of the substrate 7 via bolts, and the first piston rod 9b is connected to the advancing and retracting part 2.

[0075] More specifically, the advancing and retracting part 2 includes two L-shaped vertical plates 10 arranged at intervals and parallel to each other in the second horizontal direction DR2, a lower connecting plate 11 fixedly connected between the lower ends of the two L-shaped vertical plates 10 and extending horizontally, and an upper connecting plate 12 fixedly connected between the upper ends of the two L-shaped vertical plates 10 and extending horizontally. The aforementioned slider 13 is fixed to the bottom of the lower connecting plate 11 via bolts, and the aforementioned first piston rod 9b is connected to a side edge of the lower connecting plate 11 via a narrow plate (the reference numeral of which is omitted in the figure).

[0076] The swinging part 3 is mounted on the advancing and retracting part 2 in a manner of swinging around the second horizontal direction DR2, that is, the rotation axis AX4 of the swinging part 3 relative to the advancing and retracting part 2 also extends along the second horizontal direction DR2.

[0077] The pressing roller 4 is mounted on the swinging part 3 in a manner of rotating around the second horizontal direction DR2, that is, the rotation axis AX3 of the pressing roller 4 relative to the swinging part 3 also extends along the second horizontal direction DR2. And the pressing roller 4 is configured to switch between a first position P1 and a second position P2 through the advancement and retraction of the advancing and retracting part 2 and the swinging of the swinging part 3. Among them, the pressing roller 4 in the first position P1 presses down the heat exchange tube T in such a way that its outer peripheral surface is in rolling contact with the outer peripheral surface of the heat exchange tube T, thereby limiting the heat exchange tube T between the first support roller 5, the second support roller 6 and the pressing roller 4, so as to suppress the vibration (jumping) of the heat exchange tube T during processing; while the pressing roller 4 in the second position P2 is separated from the heat exchange tube T, and when viewed from below, each of the pressing roller 4 and the swinging part 3 is located on the side of the second support roller 6 opposite to the first support roller 5 at a distance in the first horizontal direction DR1. Therefore, a sufficient operating space is left directly above the support roller pair 1, which is not only convenient for taking out the processed heat exchange tube T upwards, but also convenient for placing the heat exchange tube T to be processed downwards onto the support roller pair 1.

[0078] In this embodiment, the pressing roller 4 is a rubber roller with a certain degree of flexibility. In this way, irreversible deformation that may occur due to the rigid pressing of the heat exchange tube T can be avoided.

[0079] Moreover, when the pressing roller 4 is in the aforementioned first position P1, when viewed downward, the pressing roller 4 is exactly located at the central position between the first support roller 5 and the second support roller 6. In this way, the heat exchange tube T can be more stably held between the first support roller 5, the second support roller 6 and the pressing roller 4, thereby helping to better suppress the shaking of the heat exchange tube T. And it can be understood that, on the one hand, the pressing roller 4 can use the swinging portion 3 to lift relative to the support roller pair 1 around the second horizontal direction DR2 (specifically the rotation axis AX4), and on the other hand, the pressing roller 4 can use the advancing and retreating portion 2 to advance and retreat relative to the support roller pair 1 in the first horizontal direction DR1 perpendicular to the second horizontal direction DR2. Therefore, even for heat exchange tubes T with different pipe diameters (outer diameters), the pressing roller 4 can always be adjusted to such a first position P1. For example, please refer to Figure 3 , compared with the heat exchange tube T with a small pipe diameter (corresponding to the Figure 3 lower reference numeral T in the figure), for the heat exchange tube T with a large pipe diameter (corresponding to the Figure 3 upper reference numeral T in the figure), in order to make the pressing roller 4 in the aforementioned first position P1, the advancing and retreating portion 2 can be closer to the support roller pair by a distance DD in the first horizontal direction DR1, and the swinging portion 3 can be farther away from the support roller pair by an angle AA in the direction around the rotation axis AX4, so that the support roller is closer to the support roller pair by a distance DD in the first horizontal direction DR1 and farther away from the support roller pair by an angle AA in the direction around the rotation axis AX4, thereby making the pressing roller 4 in the first position P1 corresponding to the large-diameter heat exchange tube T to press the large-diameter heat exchange tube T from directly above. Therefore, the shaking suppression device 100 can be applied to the anti-shaking processing of heat exchange tubes T with various pipe diameters.

[0080] In order to simplify the design, the first piston rod 9b of the first cylinder 9 can be set to have a fixed telescopic stroke. However, as previously mentioned, when the pipe diameters of the heat exchange tubes T to be processed are different, in order to make the pressing roller 4 be positioned at the specified first position P1 to press the heat exchange tube T from directly above, the relative positions of the advancing and retreating portion 2 and the support roller pair 1 in the first horizontal direction DR1 are different. For such a requirement, in this embodiment, a long hole 11a extending along the first horizontal direction DR1 is opened on the lower connecting plate 11, and the aforementioned slider 13 is fixedly connected to the lower connecting plate 11 via a bolt passing through the long hole 11a. It can be understood that by using the long hole 11a, the installation position of the slider 13 on the lower connecting plate 11 in the first horizontal direction DR1 can be adjusted, and thus, even when the first cylinder 9 is designed with a fixed telescopic stroke, it can also adapt to heat exchange tubes T with different pipe diameters.

[0081] The swing part 3 has a first swing limit position S1 close to the support roll pair 1 and a second swing limit position S2 far from the support roll pair 1, that is, the swing part 3 can swing between the first swing limit position S1 and the second swing limit position S2. In some embodiments, as Figure 2 shown by the dashed line in, the swing part 3 swings from the first swing limit position S1 and exceeds 90° to reach the second swing limit position S2.

[0082] More specifically, the jitter suppression device 100 further includes a rotating shaft 14, a swing rod 15, a second cylinder 16, and an adjusting screw 17. The rotating shaft 14 extends in the second horizontal direction DR2 and connects the swing part 3 to the advancing and retreating part 2. The rotating shaft 14 defines the swing axis of the swing part 3. The swing rod 15 has a first end 15a fixed to the rotating shaft 14, a second end 15b opposite to the first end 15a, and an intermediate part 15c extending between the first end 15a and the second end 15b. The second cylinder 16 has a second cylinder body 16a and a second piston rod 16b that can expand and contract relative to the second cylinder body 16a. Among them, the second cylinder body 16a is connected to the advancing and retreating part 2 in a manner of rotating around the rotation axis AX5, and the second piston rod 16b is connected to the intermediate part 15c of the swing rod 15 in a manner of rotating around the rotation axis AX6. Both the rotation axis AX5 and the rotation axis AX6 extend along the second horizontal direction DR2. The adjusting screw 17 is rotatably screwed to the top side of the advancing and retreating part 2 and has a rod head protruding toward the second end 15b of the swing rod 15. The rod head defines the aforementioned first swing limit position S1 of the swing part 3 in a manner of blocking the second end 15b of the swing rod 15. And, the adjusting screw 17 is configured to: by rotating the adjusting screw 17, adjust the position of the rod head, and further adjust the first swing limit position S1 of the swing part 3. In this way, the first swing limit position S1 of the swing part 3 can be adjusted by rotating the adjusting screw 17, thereby adjusting the pressing degree of the pressing roller 4 on the heat exchange tube T and adapting to heat exchange tubes T of different diameters.

[0083] The swing part 3 is configured to be generally U-shaped and includes a first arm 18, a second arm 19, and a support shaft 20. Among them, the first arm 18 and the second arm 19 are separated from each other, and one ends of the two are respectively fixed to opposite ends of the aforementioned rotating shaft 14. The support shaft 20 is connected between the other ends of the first arm 18 and the second arm 19. The pressing roller 4 is installed on the support shaft 20.

[0084] In addition, please refer to Figure 6, embodiments of the present application also provide a processing device, which includes a finning machine 200 and a plurality of vibration damping devices 100 with the above structures. The finning machine 200 is configured to process protruding fins on the outer peripheral surface and / or inner peripheral surface of the heat exchange tube T. Since the structure of the finning machine 200 is well-known, it will not be described in detail in the embodiments of the present application. A plurality of vibration damping devices 100 are all arranged on one side of the finning machine 200 along the second horizontal direction DR2, and the plurality of vibration damping devices 100 are arranged at intervals along the second horizontal direction DR2. In addition, the plurality of vibration damping devices 100 are commonly arranged and supported by a single H-shaped steel 21 for the support roller pair 1.

[0085] In addition, in combination with the above description, please refer to Figure 3 and in combination with Figure 7 , embodiments of the present application also provide a control method for the above vibration damping device or a vibration damping device with a structure similar to the above vibration damping device, and the method includes:

[0086] S701, according to the pipe diameter of the heat exchange tube T, determine the target forward distance of the advancing and retracting part 2 in the first horizontal direction DR1 and the target swing angle of the swinging part 3 swinging around the second horizontal direction DR2, where the target forward distance and the target swing angle are the distance and angle for moving the pressing roller 4 to directly above the heat exchange tube T and contacting the heat exchange tube T.

[0087] During the operation process, the advancing and retracting part 2 and the swinging part 3 can respectively have fixed initial positions and initial angles. Based on the above discussion, it can be known that for heat exchange tubes T with different pipe diameters, the anti-vibration operation positions of the pressing roller 4 relative to the support roller pair 1 are different - being directly above the heat exchange tube T and contacting the heat exchange tube T, and the central axes of heat exchange tubes T with different pipe diameters are always directly above the distance center point of the first support roller 5 and the second support roller 6 - the difference is only the elevation of the central axis. Therefore, in some embodiments, the control device (for example, the first cylinder 9 and the second cylinder 16 are replaced by servo motors, and the control device is a controller communicatively connected to the servo motors) can, according to the pipe diameter of the currently to-be-processed heat exchange tube input by the operator, automatically calculate and determine through a software program built in the control device the target forward distance that the advancing and retracting part 2 needs to advance and the target swing angle that the swinging part 3 needs to swing in order to move the pressing roller 4 in the initial state to the anti-vibration operation position.

[0088] S702, make the advancing and retracting part 2 advance the target forward distance in the first horizontal direction DR1, and after that, make the swinging part 3 swing the target swing angle around the second horizontal direction DR2.

[0089] It can be understood that if the swing of the swing part 3 precedes or is synchronized with the forward movement of the advancing and retreating part 2, an undesired situation may occur where the pressing roller 4 contacts the heat exchange tube T before reaching directly above the heat exchange tube T, and thereby laterally pushes the heat exchange tube T out from the support roller pair 1 and causes it to fall off. By first advancing the advancing and retreating part 2 a target advancing distance in the first horizontal direction and then swinging the swing part 3 by a target swing angle around the second horizontal direction, such a situation can be effectively avoided.

Claims

1. An apparatus for suppressing the vibration of a heat exchange tube during the processing of the heat exchange tube, characterized in that, Comprising: A pair of supporting rollers, which includes a first supporting roller and a second supporting roller arranged in a first horizontal direction. Each of the first supporting roller and the second supporting roller can rotate around a second horizontal direction perpendicular to the first horizontal direction, and the first supporting roller and the second supporting roller are configured to upwardly support the heat exchange tube in such a way that the outer peripheral surfaces of both the first supporting roller and the second supporting roller are in rolling contact with the outer peripheral surface of the heat exchange tube; A advancing / retreating part, which is configured to translate and advance / retreat in the first horizontal direction; A swinging part, which is mounted to the advancing / retreating part in a manner of swinging around the second horizontal direction; A pressing roller, which is mounted to the swinging part in a manner of rotating around the second horizontal direction, and is configured to switch between a first position and a second position through the advancement / retreat of the advancing / retreating part and the swing of the swinging part; The pressing roller in the first position presses the heat exchange tube downward in such a way that its outer peripheral surface is in rolling contact with the outer peripheral surface of the heat exchange tube; The pressing roller in the second position is separated from the heat exchange tube, and when viewed from above, each of the pressing roller and the swinging part is located on the side of the second supporting roller opposite to the first supporting roller and spaced apart in the first horizontal direction.

2. The device according to claim 1, wherein When the pressing roller is in the first position, when viewed from above, the pressing roller is located at the central position between the first supporting roller and the second supporting roller.

3. The device according to claim 1 or 2, characterized in that, The swinging part has a first swinging limit position close to the pair of supporting rollers and a second swinging limit position far from the pair of supporting rollers.

4. The device according to claim 3, characterized in that The device further includes: A rotating shaft, which extends in the second horizontal direction and connects the swinging part to the advancing / retreating part, defining the swinging axis of the swinging part; A swing rod, which has a first end fixed to the rotating shaft, a second end opposite to the first end, and an intermediate part extending between the first end and the second end; A second cylinder, which has a second cylinder body and a second piston rod capable of telescoping relative to the second cylinder body. Wherein, the second cylinder body is connected to the advancing / retreating part in a manner of rotating around the second horizontal direction, and the second piston rod is connected to the intermediate part of the swing rod in a manner of rotating around the second horizontal direction; An adjusting screw, which is rotatably screwed to the advancing / retreating part and has a rod head extending towards the second end of the swing rod, and the rod head defines the first swinging limit position of the swinging part in a manner of blocking the second end of the swing rod; The adjusting screw is configured to: by rotating the adjusting screw, adjust the position of the rod head, and further adjust the first swinging limit position of the swinging part.

5. The device according to claim 4, characterized in that, The swinging part includes: A first arm and a second arm spaced apart from each other, one ends of which are respectively fixed to opposite ends of the rotating shaft; A support shaft, which is connected between the other ends of the first arm and the second arm; Wherein, the pressing roller is mounted on the support shaft.

6. The device according to claim 1, characterized in that The pressing roller is a rubber roller.

7. The device according to claim 1, characterized in that, Further including: A base plate; A guide rail, which extends along the first horizontal direction and is fixed to the base plate, wherein the advancing / retreating part is slidably connected to the guide rail via a slider; A first cylinder, which has a first cylinder block and a first piston rod capable of telescoping relative to the first cylinder block in the first horizontal direction, wherein the first cylinder block is fixed to the substrate, and the first piston rod is connected to the advancing and retreating part.

8. The device according to claim 7, characterized in that, The advancing and retreating part has a long hole extending in the first horizontal direction, and the slider is fixed to the advancing and retreating part in a position-adjustable manner via a bolt passing through the long hole.

9. A processing device, characterized in that, Comprising: A finning machine configured to machine protruding fins on the outer peripheral surface and / or inner peripheral surface of the heat exchange tube; The device according to any one of claims 1 to 8, which is arranged on one side of the finning machine along the second horizontal direction.

10. The processing device according to claim 9, characterized in that, A plurality of the devices are arranged, and the plurality of devices are arranged at intervals along the second horizontal direction.

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