Fin cutting device for plate-fin heat exchanger

Abstract

The present invention discloses a fin cutting device for a plate-fin heat exchanger, and relates to the technical field of fin processing. The fin cutting device for a plate-fin heat exchanger includes a support platform, and also includes: a plug plate, the plug plate is arranged above the support platform, the plug plate is used to be inserted into the gap between the fins, so as to support the fins on both sides of the plug plate, and the plug plate is provided with a plurality of plug plates, and the distance between adjacent plug plates is equal to the interval between adjacent fins; a constraint groove, the constraint groove is arranged on both sides of the plug plate, and the constraint groove guides the movement of the plug plate, when the plug plate moves to the side of the annular belt close to the support platform, the plug plate moves vertically downward through the guidance of the constraint groove. By setting an annular belt to drive the plug plate to insert into the gap between the fins, a support effect is played on the fins on both sides of the gap, so as to avoid the deformation of the fins in contact with the cutting device at the incision due to cutting, resulting in a change in the shape of the gap at the incision.

Description

Technical Field

[0001] The invention relates to the technical field of fin processing, in particular to a fin cutting device for a plate-fin heat exchanger. Background Art

[0002] Plate-fin heat exchangers are usually composed of partitions, fins, seals and guide vanes, and play a role in heat exchange between multiple working media. The fins are placed between two adjacent partitions to increase the heat exchange area of ​​the heat exchanger. The fins are plate-like structures with gaps. They are generally divided into serrated, straight and corrugated types according to the shape of the gaps. In different application scenarios, the length, width or shape of the fins needs to be adjusted before installation according to actual usage requirements.

[0003] When the existing fin cutting device cuts the fin perpendicular to the gap direction, the fin in contact with the cutting device at the incision will be deformed due to the cutting, thereby causing the shape of the gap at the incision to change, reducing the quality of the fin, resulting in a decrease in the flow rate of the fluid at the gap deformation in subsequent use, affecting the heat exchange efficiency of the heat exchanger. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a fin cutting device for a plate-fin heat exchanger, which solves the problem that the fins in contact with the cutting device at the incision will be deformed due to cutting, thereby causing the shape of the gap at the incision to change.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fin cutting device for a plate-fin heat exchanger, comprising a support platform, and also comprising: an insert plate, wherein the insert plate is arranged above the support platform, and the insert plate is used to be inserted into the gap between the fins to support the fins on both sides of the insert plate, and the insert plate is provided with multiple, and the distance between adjacent insert plates is equal to the interval between adjacent fins; an annular belt, wherein the annular belt is arranged above the support platform, and multiple insert plates are vertically surrounded by the outer arc surface of the annular belt, and the annular belt is used to drive the insert plate to rotate; a constraint groove, wherein the constraint groove is arranged on both sides of the insert plate, and the constraint groove guides the movement of the insert plate, and when the insert plate moves to the side of the annular belt close to the support platform, the insert plate moves vertically downward under the guidance of the constraint groove.

[0006] Further, a fixing frame is provided between the insertion plate and the annular belt. The fixing frame is in an inverted U shape. The insertion plate is movably arranged inside the fixing frame. A fixing member is fixedly arranged between the top end of the fixing frame and the annular belt. An adjustment groove is formed on the side of the fixing member. The adjustment groove is used to adjust the distance between the top end of the fixing member and the top end of the fixing frame. Long slots are formed on both sides of the fixing frame, and cylindrical slots are formed in the long slots. Sliding blocks are fixedly arranged on both sides of the top end of the insertion plate. The sliding blocks are fitted with the cylindrical slots, and the sliding blocks slide in the cylindrical slots. A first spring is arranged between the sliding blocks and the bottom ends of the cylindrical slots. The first spring plays a role in resetting the insertion plate. A holding rod is fixedly arranged on the side of the sliding block away from the insertion plate. One end of the holding rod away from the insertion plate is inserted into the restraint groove.

[0007] Further, fixing plates are arranged on both sides of the annular belt. The restraint groove is formed on the surface of the fixing plate close to the annular belt. The restraint groove is composed of an annular groove, a protruding groove and a transition groove. The annular groove is concentric with the annular belt. The protruding groove is formed on the side of the fixing plate close to the support platform. The distance between the protruding groove and the annular belt is greater than the distance between the annular groove and the annular belt. The transition groove is formed between the annular groove and the protruding groove, and the transition groove is used to connect the annular groove and the protruding groove. An annular hole is formed on the side of the fixing plate located on the inner arc of the restraint groove. A support portion is fixedly arranged on the inner wall of the fixing plate close to the annular hole. The support portion contacts the top end of the fixing member. A cover shell is arranged above the support platform. The fixing plate is fixedly arranged on the inner wall of the cover shell.

[0008] Further, a slide rail is fixedly arranged on the upper surface of the support platform close to the cover shell. An installation seat is arranged above the slide rail. A chute is formed at the bottom end of the installation seat. The chute is fitted with the slide rail, and the chute slides along the slide rail. The cover shell is movably installed on the installation seat. A cavity is formed in the installation seat, and the cavity serves as an accommodating space.

[0009] Furthermore, a driven gear is meshed with the inner arc surface of the annular belt, and the driven gear is rotatably installed in the cover shell, and a driving gear is meshed with the inner arc surface of the annular belt on the side away from the driven gear, and a first transmission shaft is fixedly provided at the axis center of the driving gear, one end of the first transmission shaft is rotatably installed in the cover shell, and the other end of the first transmission shaft extends into the cavity, and a first gear is fixedly provided at the end of the first transmission shaft located in the cavity; a second transmission shaft is rotatably provided in the cavity, a first motor driving the second transmission shaft is fixedly provided on one side of the second transmission shaft, a third gear is fixedly provided at the output end of the first motor, and a fourth gear is fixedly provided on the outer peripheral surface of the second transmission shaft A reduction gear set is provided between the third gear and the fourth gear, and the reduction gear set is used to reduce the rotation speed of the first motor to increase the torque of driving the second transmission shaft. A second gear is fixedly provided at one end of the second transmission shaft close to the first transmission shaft, and the second gear is used to drive the first gear; a rack is fixedly provided on the side surface of the support platform close to the mounting seat, and a moving gear is vertically meshed on one side of the rack, a third rotating shaft is fixedly provided at the axis center of the moving gear, and the third rotating shaft is rotatably installed on the mounting seat, a bevel gear set is fixedly provided at one end of the third rotating shaft close to the second transmission shaft, and the other end of the bevel gear set is fixedly provided on the outer peripheral surface of the second transmission shaft.

[0010] Furthermore, the tooth number ratio between the mobile gear and the third gear and the fourth gear is an integer multiple, the tooth number ratio between the annular belt and the third gear and the fourth gear is an integer multiple, the reduction ratio of the reduction gear group is an integer multiple, and the ratio of the number of teeth of the annular belt to the number of plug-ins is an integer multiple; when the annular belt rotates an interval arc length, the mobile gear rotates at least an arc length of one tooth.

[0011] Furthermore, a first sliding fixed block is fixed on both sides of one end of the cover shell, a mounting bracket is fixed on one end of the mounting seat close to the first sliding fixed block, a sliding fixed groove is provided on the side of the mounting bracket close to the cover shell, the first sliding fixed block slides in the sliding fixed groove, and the length of the sliding fixed groove is at least a spacing distance greater than the length of the first sliding fixed block; a through groove is provided on the inner wall of the cavity corresponding to the position of the first transmission shaft, the length of the through groove is the same as that of the sliding fixed groove, and the first transmission shaft slides in the through groove.

[0012] Furthermore, a mounting plate is fixedly provided at one end of the cover shell close to the first sliding fixed block, and a threaded rod is rotatably provided on the surface of the mounting plate away from the cover shell, and the threaded rod passes through the mounting frame and is threadedly connected to the mounting frame; a bolt is fixedly provided on the surface of the mounting plate away from the cover shell, and the bolt passes through the mounting frame at one end away from the mounting plate, and a nut is provided on the outer peripheral surface of the bolt close to one end of the mounting frame.

[0013] Furthermore, a mounting block is fixedly provided on the inner wall of the cavity close to the threaded rod side, a mounting cavity is opened on the side of the mounting block, a sliding rod is fixedly provided in the mounting cavity along the length direction of the mounting block, a connecting slider is slidably provided in the mounting cavity, the connecting slider is slidably provided on the outer peripheral surface of the sliding rod, a second spring is provided between the connecting slider and the inner wall of the mounting cavity, and the second spring is sleeved on the outer peripheral surface of the sliding rod; an adjusting gear is rotatably provided on one side of the connecting slider, a toothed belt is provided on the outer peripheral surface of the adjusting gear, and the adjusting gear, the first gear and the second gear are driven by the toothed belt.

[0014] Furthermore, a second motor is fixedly installed in the cavity, a cutting knife is provided between the cover shell and the mounting seat, and the output end of the second motor is fixedly connected to the axis of the cutting knife; an avoidance groove is opened on the upper surface of the support platform corresponding to the position of the cutting knife, and the avoidance groove is used to leave space for the cutting knife during cutting.

[0015] The present invention has the following beneficial effects:

[0016] (1) The fin cutting device of the plate-fin heat exchanger drives the plug plate to rotate by setting an annular belt, and guides the movement of the plug plate through the constraint groove. When the plug plate moves to the side of the annular belt close to the support platform, it moves vertically downward under the guidance of the constraint groove, so that the plug plate is inserted into the gap between the fins. The annular belt moves horizontally with the mounting seat while rotating, and the direction of rotation of the annular belt is opposite to the direction of movement of the mounting seat, so that a single plug plate and the corresponding gap are in a relatively static state, and then the fins on both sides of the gap are supported by the plug plate, so as to avoid the fins that are in contact with the cutting device at the incision being deformed due to cutting, resulting in a change in the shape of the gap at the incision.

[0017] (2) The plate-fin heat exchanger fin cutting device is configured to adapt to the change of the position of the first transmission shaft by setting the first gear at the end of the first transmission shaft and the second gear at the end of the second transmission shaft to be a toothed belt drive, and to set an adjusting gear and a second spring to adjust the tension of the toothed belt, so as to achieve the transmission between the second gear and the first gear is not affected when the position of the plug plate is adjusted within a gap range.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the cover shell and the mounting base of the present invention;

[0021] Figure 3 This is a schematic diagram of the cooperation between the plug plate and the annular belt of the present invention;

[0022] Figure 4 This is a schematic diagram of the plug board structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the constraint groove structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the transmission part of the present invention;

[0025] Figure 7 A top view of the cover of the present invention;

[0026] Figure 8 This is a schematic diagram of the installation position of the threaded rod of the present invention;

[0027] Fig. 9 It is a side view of the cover of the present invention;

[0028] Fig.10 This is a schematic diagram of the internal structure of the mounting base of the present invention;

[0029] Fig.11 This is a schematic diagram of the cooperation between the adjusting gear and the first gear and the second gear of the present invention;

[0030] Fig.12 For the present invention Figure 3 Enlarged view of area A;

[0031] Fig.13 This is a diagram showing the relationship between the cutting knife and the fin positions of the present invention.

[0032] In the figure, 1, support platform; 2, avoidance groove; 3, slide rail; 4, rack; 5, cover; 6, mounting seat; 601, mounting frame; 7, moving gear; 8, bevel gear set; 9, slide groove; 10, cavity; 11, fixing plate; 1101, transition groove; 1102, extension groove; 1103, annular groove; 1104, annular hole; 1105, supporting part; 12, annular belt; 13, plug plate; 1301, sliding block; 1302, holding rod; 14, fixing frame; 1401, elongated groove; 1402, cylindrical groove; 15, fixing piece; 1501, adjustment groove; 16, first spring; 17, driving gear; 18, driven gear; 19. First transmission shaft; 20. First gear; 21. Second gear; 22. Second transmission shaft; 23. Reduction gear set; 24. First motor; 25. Third gear; 26. Third rotating shaft; 27. Fourth gear; 28. Adjusting gear; 29. ​​Toothed belt; 30. Mounting block; 3001. Mounting cavity; 31. Second spring; 32. Slide bar; 33. Connecting slider; 34. First sliding fixed block; 35. Second sliding fixed block; 36. Sliding fixed groove; 37. Mounting plate; 38. Bolt; 3801. Nut; 39. Threaded rod; 40. Second motor; 41. Cutting knife; 42. Limit block; 43. Through groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Refer to the following Figure 1-Figure 13 The plate-fin heat exchanger fin cutting device provided in an embodiment of the present invention is described.

[0036] See also Figure 1 - Figure 5 The embodiment of the present invention provides a technical solution: a plate-fin heat exchanger fin cutting device, comprising a support platform 1, the support platform 1 is used to place the fins to be cut, wherein the fins can be fixed by fixing devices such as clamps or baffles during cutting. Since the fixing device belongs to the prior art, it will not be described in detail here.

[0037] The cutting machine also includes a plug plate 13, which is arranged above the support platform 1. The plug plate 13 is used to be inserted into the fin interval fixed on the support platform 1, so as to support the fins on both sides of the plug plate 13 during cutting, so as to prevent the fins at the cut from being deformed due to contact with the cutting device. There are multiple plug plates 13, and the distance between adjacent plug plates 13 is equal to the interval between adjacent fins (the matching relationship between the plug plate 13 and the fin gap can be referred to Figure 3 and Fig.12 ), optionally, the shape of the insert plate 13 can be a straight plate to adapt to straight fins or serrated fins, and the shape of the insert plate 13 can also be an arc-shaped plate to adapt to corrugated fins.

[0038] In addition, an annular belt 12 is provided above the support platform 1, and a plurality of plug plates 13 are vertically arranged around the outer arc surface of the annular belt 12. The annular belt 12 is used to drive the plug plates 13 to rotate. During the rotation of the annular belt 12, the plug plates 13 are perpendicular to the surface of the annular belt 12. Optionally, the annular belt 12 is a toothed belt, a chain or a crawler track.

[0039] In addition, restraint grooves are provided on both sides of the insertion plate 13. The restraint grooves play a guiding role in the movement of the insertion plate 13. When the insertion plate 13 moves to the side of the annular belt 12 close to the support platform 1, the insertion plate 13 moves vertically downward under the guidance of the restraint grooves, so that the insertion plate 13 is inserted into the intervals between the fins, thereby preventing the insertion plate 13 from colliding with the fins during rotation.

[0040] Combined Figure 4 , in order to fix the insertion plate 13 and the annular belt 12 together, a fixing frame 14 is provided between the insertion plate 13 and the annular belt 12. The fixing frame 14 is in an inverted U shape. The insertion plate 13 is movably arranged inside the fixing frame 14. A fixing member 15 is fixedly arranged between the top end of the fixing frame 14 and the annular belt 12. And an adjustment groove 1501 is formed on the side of the fixing member 15. The adjustment groove 1501 is used to adjust the distance between the top end of the fixing member 15 and the top end of the fixing frame 14. The top end of the fixing member 15 is fixed to the annular belt 12 by screws, and the side of the fixing member 15 is fixed to the fixing frame 14 by screws. Thus, the fixing frame 14 is fixed to the annular belt 12 through the fixing member 15. When the thickness of the annular belt 12 changes, the fixing position of the fixing frame 14 and the fixing member 15 can be adjusted by adjusting the position of the screws in the adjustment groove 1501.

[0041] In addition, in order to enable the insertion plate 13 to be installed on the fixing frame 14 and still be able to slide on the fixing frame 14, long slots 1401 are formed on both sides of the fixing frame 14, and cylindrical slots 1402 are formed in the long slots 1401. Sliding blocks 1301 are fixedly arranged on both sides of the top end of the insertion plate 13. The sliding blocks 1301 fit with the cylindrical slots 1402, and the sliding blocks 1301 slide in the cylindrical slots 1402. Thus, the insertion plate 13 can move along the long slots 1401. A first spring 16 is arranged between the bottom ends of the sliding blocks 1301 and the cylindrical slots 1402. The first spring 16 plays a reset role for the insertion plate 13 and can also improve the stability of the insertion plate 13 during movement.

[0042] And, a holding rod 1302 is fixedly arranged on the side of the sliding block 1301 away from the insertion plate 13. The end of the holding rod 1302 away from the insertion plate 13 is inserted into the restraint groove. Thus, the distance between the insertion plate 13 and the fixing frame 14 changes with the position of the holding rod 1302 in the restraint groove.

[0043] Combined Figure 5 , fixing plates 11 are provided on both sides of the annular belt 12. The restraint grooves are formed on the surface of the fixing plates 11 close to the annular belt 12. A cover 5 is arranged above the support platform 1. The fixing plates 11 are fixedly arranged on the inner wall of the cover 5.

[0044] Furthermore, in order to allow the inserting plate 13 to extend from the fixing frame 14 and be inserted into the gap between the fins when the inserting plate 13 moves to the side of the annular belt 12 close to the support platform 1, the restraining groove on the fixing plate 11 is composed of an annular groove 1103, an extension groove 1102 and a transition groove 1101. The annular groove 1103 is concentric with the annular belt 12 and is located on the side of the fixing plate 11 away from the support platform 1. The extension groove 1102 is opened on the side of the fixing plate 11 close to the support platform 1. The extension groove 1102 is located between the annular belt 12 and the transition groove 1101. The distance between them is greater than the distance between the annular groove 1103 and the annular belt 12, so that a height difference is formed between the extending groove 1102 and the annular groove 1103, so that the insert plate 13 extends out from the fixing frame 14, and the transition groove 1101 is opened between the annular groove 1103 and the extending groove 1102, and the transition groove 1101 is used to connect the annular groove 1103 and the extending groove 1102, so that the supporting rod 1302 can move between the annular groove 1103 and the extending groove 1102 through the transition groove 1101.

[0045] In addition, in order to support the annular belt 12, an annular hole 1104 is opened on one side of the fixing plate 11 located in the inner arc of the constraint groove, and a supporting portion 1105 is fixedly provided on the inner wall of the fixing plate 11 close to the annular hole 1104. The supporting portion 1105 contacts the top end of the fixing piece 15, thereby supporting the annular belt 12 through the fixing piece 15, thereby improving the stability of the annular belt 12 during movement.

[0046] Combination Figure 1 and Figure 2 In order to facilitate the overall movement of the plug plate 13, the annular belt 12 and the cover shell 5, a slide rail 3 is fixedly provided on the upper surface of the support platform 1 close to the cover shell 5, and a mounting seat 6 is provided above the slide rail 3. A slide groove 9 is provided at the bottom end of the mounting seat 6, and the slide groove 9 fits with the slide rail 3, and the slide groove 9 slides along the slide rail 3. The slide rail 3 is preferably trapezoidal, so that the slide rail 3 can fix the mounting seat 6. In order to prevent the mounting seat 6 from falling off from both ends of the slide rail 3, limit blocks 42 are fixedly provided at both ends of the slide rail 3. The limit blocks 42 play a role of mechanical hard limit for the mounting seat 6, and the cover shell 5 is movably installed on the mounting seat 6, and the plug plate 13, the annular belt 12 and the cover shell 5 move together with the mounting seat 6. A cavity 10 is provided in the mounting seat 6, and the cavity 10 plays a role of accommodation.

[0047] Combination Figure 2 , Figure 3 and Figure 6In order to drive the annular belt 12 to rotate, a driven gear 18 is meshed on the inner arc surface of the annular belt 12, and the driven gear 18 is rotatably installed in the housing 5. A driving gear 17 is meshed on the side of the inner arc surface of the annular belt 12 away from the driven gear 18. A first transmission shaft 19 is fixedly provided at the axis center of the driving gear 17. The first transmission shaft 19 is used to drive the driving gear 17 to rotate. One end of the first transmission shaft 19 is rotatably installed in the housing 5, and the other end of the first transmission shaft 19 extends into the cavity 10. A first gear 20 is fixedly provided at one end of the first transmission shaft 19 located in the cavity 10. The first gear 20 is used to drive the first transmission shaft 19 to rotate. A second transmission shaft 22 is provided, and a first motor 24 that drives the second transmission shaft 22 is fixedly provided on one side of the second transmission shaft 22. A third gear 25 is fixedly provided on the output end of the first motor 24. A fourth gear 27 is fixedly provided on the outer circumferential surface of the second transmission shaft 22, and a reduction gear set 23 is provided between the third gear 25 and the fourth gear 27. The reduction gear set 23 is used to reduce the rotation speed of the first motor 24 to increase the torque for driving the second transmission shaft 22. A second gear 21 is fixedly provided on one end of the second transmission shaft 22 close to the first transmission shaft 19. The second gear 21 is used to drive the first gear 20, thereby driving the endless belt 12 to rotate through the first motor 24.

[0048] In addition, in order to drive the mounting base 6 to move, a rack 4 is fixedly provided on the side surface of the support platform 1 close to the mounting base 6, and a moving gear 7 is vertically meshed on one side of the rack 4. A third rotating shaft 26 is fixedly provided at the axis of the moving gear 7, and the third rotating shaft 26 is rotatably installed on the mounting base 6. A bevel gear set 8 is fixedly provided at one end of the third rotating shaft 26 close to the second transmission shaft 22, and the other end of the bevel gear set 8 is fixedly provided on the outer peripheral surface of the second transmission shaft 22, so that the power of the second transmission shaft 22 is transmitted to the moving gear 7 through the bevel gear set 8, and then the moving gear 7 is driven to rotate through the first motor 24, and the mounting base 6 is driven to move along the slide rail 3 under the action of the rack 4.

[0049] In this embodiment, the first motor 24 is used to simultaneously drive the moving gear 7 and the driving gear 17 to rotate, so that when the mounting seat 6 moves, the annular belt 12 also rotates therewith. Since the cover shell 5 is installed on the mounting seat 6, the annular belt 12 rotates and moves with the mounting seat 6. Since the rotation direction of the annular belt 12 is opposite to its own moving direction, the insert plate 13 and the corresponding gap remain in a relatively static state, and then the insert plate 13 can be continuously inserted into the gap between the fins and then detached from the gap during the process of moving with the mounting seat 6 without colliding with the fins. The insert plate 13 supports the gap between the fins when moving along the slide rail 3.

[0050] In order to prevent the insert plate 13 from colliding with the fin due to position deviation between the gap during movement, it is preferred that the tooth ratio between the moving gear 7 and the third gear 25 and the fourth gear 27 is an integer multiple, the tooth ratio between the annular belt 12 and the third gear 25 and the fourth gear 27 is an integer multiple, the reduction ratio of the reduction gear set 23 is an integer multiple, and the ratio of the number of teeth of the annular belt 12 to the number of insert plates 13 is an integer multiple.

[0051] Furthermore, in order to avoid the situation where two insert plates 13 pass through the same fin interval when the moving gear 7 rotates the arc length of one tooth, it is preferred that the moving gear 7 rotates at least the arc length of one tooth when the annular belt 12 rotates the arc length of one interval.

[0052] In this embodiment, optionally, the annular belt 12 has 80 teeth, and the spacing distance between the fins is equal to the distance between 4 teeth, the driving gear 17 has 40 teeth, and the annular belt 12 rotates an arc of 36° for the spacing of one plug plate 13, that is, it rotates 4 teeth. At this time, the rotation angle of the second transmission shaft 22 is also 36°, the transmission ratio of the bevel gear set 8 is 1, and the number of teeth of the moving gear 7 is 20. At this time, the moving gear 7 also rotates 36° and rotates two teeth, so that the pitch of the moving gear 7 is twice the pitch of the annular belt 12, so that the distance of the moving gear 7 moving 2 teeth is the same as the distance of the annular belt 12 moving four teeth.

[0053] Combination Figure 7 - Fig. 9 In order to adjust the position of the cover shell 5 on the mounting seat 6 so that the plug board 13 can be aligned with the gap on the fin before cutting, a first sliding fixing block 34 is fixed on both sides of one end of the cover shell 5, and a mounting frame 601 is fixed on one end of the mounting seat 6 close to the first sliding fixing block 34. The mounting frame 601 is "U"-shaped, and the cover shell 5 is located in the "U"-shaped groove of the mounting frame 601. A sliding fixing groove 36 is opened on one side of the mounting frame 601 close to the cover shell 5, and the first sliding fixing block 34 can slide in the sliding fixing groove 36, and the sliding fixing groove 36 is fixed to the mounting frame 601. 6 is at least one interval greater than the length of the first sliding fixed block 34, so that the cover shell 5 can be adjusted within an interval range, and then the position of the plug plate 13 is adjusted. A through groove 43 is provided on the inner wall of the cavity 10 at a position corresponding to the first transmission shaft 19. The length of the through groove 43 is the same as that of the sliding fixed groove 36. The first transmission shaft 19 can slide in the through groove 43, and the height of the through groove 43 is the same as the diameter of the first transmission shaft 19, so that when the cover shell 5 is moved, the first transmission shaft 19 will not hinder the movement of the cover shell 5.

[0054] Optionally, in order to improve the stability of the installation of the cover shell 5, a second sliding fixing block 35 is fixedly provided at one end of the cover shell 5 away from the first sliding fixing block 34 and close to the side of the mounting seat 6, and a second sliding fixing groove is opened at the position of the mounting seat 6 corresponding to the second sliding fixing block 35. The second sliding fixing groove has the same structure as the sliding fixing groove 36, thereby increasing the support points of the cover shell 5 and improving the stability of the device during operation.

[0055] Combination Figure 8 and Fig. 9 In order to facilitate the adjustment of the position of the plug board 13, a mounting plate 37 is fixedly provided at one end of the cover shell 5 close to the first sliding fixed block 34, and a threaded rod 39 is rotatably provided on the surface of the mounting plate 37 away from the cover shell 5, and the threaded rod 39 passes through the mounting frame 601 and is threadedly connected to the mounting frame 601. When the position of the plug board 13 needs to be adjusted, the cover shell 5 is pushed by rotating the threaded rod 39, and then the position of the plug board 13 in the horizontal direction is adjusted.

[0056] In addition, in order to improve the stability of the connection between the cover shell 5 and the mounting frame 601, a bolt 38 is fixedly provided on the surface of the mounting plate 37 away from the cover shell 5, and the end of the bolt 38 away from the mounting plate 37 passes through the mounting frame 601, and a nut 3801 is provided on the outer peripheral surface of the end of the bolt 38 close to the mounting frame 601, and the position of the cover shell 5 can be locked by tightening the nut 3801.

[0057] Combination Fig.10 and Fig.11 In order to prevent the movement of the cover shell 5 from affecting the rotation of the annular belt 12, a mounting block 30 is fixedly provided on the inner wall of the cavity 10 on the side close to the threaded rod 39, a mounting cavity 3001 is opened on the side of the mounting block 30, and a slide bar 32 is fixedly provided in the mounting cavity 3001 along the length direction of the mounting block 30, a connecting slider 33 is slidably provided in the mounting cavity 3001, the connecting slider 33 fits with the mounting cavity 3001, and the connecting slider 33 is slidably provided on the outer peripheral surface of the slide bar 32, a second spring 31 is provided between the connecting slider 33 and the inner wall of the mounting cavity 3001, and the second spring 31 is sleeved on the outer peripheral surface of the slide bar 32, the second spring 31 is used to support the connecting slider 33, an adjusting gear 28 is rotatably provided on one side of the connecting slider 33, and a toothed belt 29 is provided on the outer peripheral surface of the adjusting gear 28, and the adjusting gear 28, the first gear 20 and the second gear 21 are driven by the toothed belt 29.

[0058] In this embodiment, when the position of the cover shell 5 is adjusted, the first transmission shaft 19 moves accordingly, thereby pulling the toothed belt 29 through the first gear 20. The toothed belt 29 will drive the adjustment gear 28 to move when it is deformed, so that the connecting slider 33 compresses or releases the second spring 31. When the position of the cover shell 5 is confirmed, the second spring 31 can maintain the position of the adjustment gear 28, so that the transmission between the second gear 21 and the first gear 20 is not affected.

[0059] Combination Figure 2 , Figure 3 and Fig.13 In order to cut the fins, a second motor 40 is fixed in the cavity 10, and a cutting knife 41 is provided between the cover 5 and the mounting seat 6. The output end of the second motor 40 is fixedly connected to the axis of the cutting knife 41. The cutting part of the cutting knife 41 is between the extending grooves 1102, so that when the cutting knife 41 cuts the fins perpendicular to the gap direction, the insert plate 13 supports the part where the cutting knife 41 cuts the fins. An avoidance groove 2 is opened on the upper surface of the support platform 1 at the position corresponding to the cutting knife 41. The avoidance groove 2 is used to leave space for the cutting knife 41 during cutting.

[0060] When in use (working), the fin is first fixed to the support platform 1, and the end of the fin to be cut is fixed on the support platform 1 at one end close to the avoidance groove 2, and then the cover shell 5 is pushed by rotating the threaded rod 39, thereby driving the plug plate 13 to align with the gap of the fin. After alignment, the second motor 40 is started to drive the cutting knife 41 to rotate, and the first motor 24 is started at the same time. The first motor 24 drives the second transmission shaft 22 to rotate through the reduction gear group 23, and the first motor 24 drives the moving gear 7 to rotate through the bevel gear group 8. The moving gear 7 contacts with the rack 4, so that the mounting seat 6 and the cover shell 5 move along the slide rail 3, and the second transmission shaft 22 drives the second gear 21 to rotate at the same time. The second gear 21 drives the first gear 20 to rotate through the toothed belt 29, and the first gear 20 drives the first transmission shaft 19 and the driving gear 17 to rotate, thereby driving the annular belt 12 to rotate, and then the annular belt 12 rotates while moving with the mounting seat 6.

[0061] During cutting, the fixing frame 14 rotates synchronously with the annular belt 12, thereby driving the plug plate 13 to rotate. While the plug plate 13 rotates, the abutting rods 1302 located on both sides of the plug plate 13 are inserted into the restraining grooves on the fixing plate 11. When the plug plate 13 moves to the lower end of the cover shell 5 with the annular belt 12, the abutting rods 1302 enter the extending grooves 1102 from the annular grooves 1103 in the restraining grooves, thereby driving the plug plate 13 to extend out from the fixing frame 14, and then the plug plate 13 is inserted into the gap between the fins to support the fins at the incision.

[0062] When the cover shell 5 is pushed by the threaded rod 39, the cover shell 5 is supported by the cooperation of the first sliding fixed block 34 and the sliding fixed groove 36. At this time, the annular belt 12 and the plug plate 13 move together with the cover shell 5, and the first transmission shaft 19 slides in the through groove 43. The first gear 20 at the end of the first transmission shaft 19 and the second gear 21 at the end of the second transmission shaft 22 are transmitted through the toothed belt 29, and the tension of the toothed belt 29 is adjusted by adjusting the gear 28 to adapt to the change of the position of the first transmission shaft 19.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A plate-fin heat exchanger fin cutting device, comprising a support platform (1), characterized in that: It further includes: A plug board (13), which is arranged above the support table (1). The plug board (13) is used to be inserted into the intervals between the fins to support the fins on both sides of the plug board (13). There are multiple plug boards (13), and the distance between adjacent plug boards (13) is equal to the interval between adjacent fins; An annular belt (12), which is arranged above the support table (1). Multiple plug boards (13) are vertically arranged around the outer arc surface of the annular belt (12). The annular belt (12) is used to drive the plug board (13) to rotate; A constraint groove, which is arranged on both sides of the plug board (13), and the constraint groove guides the movement of the plug board (13). When the plug board (13) moves to the side of the annular belt (12) close to the support table (1), the plug board (13) moves vertically downward under the guidance of the constraint groove; A fixing frame (14) is arranged between the plug board (13) and the annular belt (12). The fixing frame (14) is in an "冂” shape. The plug board (13) is movably arranged inside the fixing frame (14). A fixing part (15) is fixedly arranged between the top end of the fixing frame (14) and the annular belt (12). An adjustment groove (1501) is opened on the side of the fixing part (15), and the adjustment groove (1501) is used to adjust the distance between the top end of the fixing part (15) and the top end of the fixing frame (14); Long slots (1401) are opened on both sides of the fixing frame (14), and cylindrical slots (1402) are opened inside the long slots (1401). Sliding blocks (1301) are fixedly arranged on both sides of the top end of the plug board (13). The sliding blocks (1301) fit with the cylindrical slots (1402), and the sliding blocks (1301) slide inside the cylindrical slots (1402); A first spring (16) is arranged between the sliding block (1301) and the bottom end of the cylindrical slot (1402). The first spring (16) plays a role in resetting the plug board (13); A holding rod (1302) is fixedly arranged on the side of the sliding block (1301) away from the plug board (13). One end of the holding rod (1302) away from the plug board (13) is inserted into the constraint groove; Fixing plates (11) are arranged on both sides of the annular belt (12). The constraint groove is opened on the surface of the fixing plate (11) close to the annular belt (12); The constraint groove is composed of an annular groove (1103), a protruding groove (1102) and a transition groove (1101). The annular groove (1103) is concentric with the annular belt (12). The protruding groove (1102) is opened on the side of the fixing plate (11) close to the support table (1). The distance between the protruding groove (1102) and the annular belt (12) is greater than the distance between the annular groove (1103) and the annular belt (12). The transition groove (1101) is opened between the annular groove (1103) and the protruding groove (1102), and the transition groove (1101) is used to connect the annular groove (1103) and the protruding groove (1102); The fixing plate (11) is provided with an annular hole (1104) on one side of the inner arc of the constraint groove, and a supporting portion (1105) is fixedly provided on the inner wall of the fixing plate (11) near the annular hole (1104), and the supporting portion (1105) is in contact with the top end of the fixing member (15); A cover shell (5) is provided above the support platform (1), and the fixing plate (11) is fixedly arranged on the inner wall of the cover shell (5); A slide rail (3) is fixedly provided on the upper surface of the support platform (1) on the side close to the cover shell (5), a mounting seat (6) is provided above the slide rail (3), a slide groove (9) is provided at the bottom end of the mounting seat (6), the slide groove (9) is fitted with the slide rail (3), and the slide groove (9) slides along the slide rail (3), the cover shell (5) is movably mounted on the mounting seat (6), a cavity (10) is provided in the mounting seat (6), and the cavity (10) plays a role of accommodation; The inner arc surface of the annular belt (12) is meshed with a driven gear (18), and the driven gear (18) is rotatably mounted in the housing (5). The inner arc surface of the annular belt (12) is meshed with a driving gear (17) on a side away from the driven gear (18). A first transmission shaft (19) is fixedly arranged at the axis of the driving gear (17). One end of the first transmission shaft (19) is rotatably mounted in the housing (5), and the other end of the first transmission shaft (19) extends into the cavity (10). The end of the first transmission shaft (19) located in the cavity (10) is fixedly arranged with a first gear (20); A second transmission shaft (22) is rotatably arranged in the cavity (10); a first motor (24) for driving the second transmission shaft (22) is fixedly arranged on one side of the second transmission shaft (22); a third gear (25) is fixedly arranged at the output end of the first motor (24); a fourth gear (27) is fixedly arranged on the outer peripheral surface of the second transmission shaft (22); a reduction gear set (23) is arranged between the third gear (25) and the fourth gear (27); the reduction gear set (23) is used to reduce the rotation speed of the first motor (24) so ​​as to increase the torque for driving the second transmission shaft (22); a second gear (21) is fixedly arranged at one end of the second transmission shaft (22) close to the first transmission shaft (19); the second gear (21) is used to drive the first gear (20); A rack (4) is fixedly provided on the side surface of the support platform (1) close to the mounting seat (6); a moving gear (7) is vertically meshed on one side of the rack (4); a third rotating shaft (26) is fixedly provided at the axis of the moving gear (7); and the third rotating shaft (26) is rotatably mounted on the mounting seat (6); a bevel gear set (8) is fixedly provided at one end of the third rotating shaft (26) close to the second transmission shaft (22); and the other end of the bevel gear set (8) is fixedly provided on the outer peripheral surface of the second transmission shaft (22).

2. A plate-fin heat exchanger fin cutting device according to claim 1, characterized in that: The gear ratio between the moving gear (7) and the third gear (25) and the fourth gear (27) is an integer multiple, the gear ratio between the annular belt (12) and the third gear (25) and the fourth gear (27) is an integer multiple, the reduction ratio of the reduction gear set (23) is an integer multiple, and the ratio between the number of teeth of the annular belt (12) and the number of the insert plates (13) is an integer multiple; When the annular belt (12) rotates by an arc length of an interval, the moving gear (7) rotates by at least an arc length of one tooth.

3. A plate-fin heat exchanger fin cutting device according to claim 2, characterized in that: A first sliding fixed block (34) is fixedly provided on both sides of one end of the cover shell (5); a mounting frame (601) is fixedly provided on one end of the mounting seat (6) close to the first sliding fixed block (34); a sliding fixed groove (36) is provided on one side of the mounting frame (601) close to the cover shell (5); the first sliding fixed block (34) slides in the sliding fixed groove (36), and the length of the sliding fixed groove (36) is at least greater than the length of the first sliding fixed block (34) by a spacing distance; A through slot (43) is provided on the inner wall of the cavity (10) at a position corresponding to the first transmission shaft (19); the length of the through slot (43) is the same as that of the sliding fixing slot (36); and the first transmission shaft (19) slides in the through slot (43).

4. The plate-fin heat exchanger fin cutting device according to claim 3, characterized in that: A mounting plate (37) is fixedly provided at one end of the cover shell (5) close to the first sliding fixed block (34); a threaded rod (39) is rotatably provided on a surface of the mounting plate (37) on a side away from the cover shell (5); the threaded rod (39) passes through the mounting frame (601) and is threadedly connected to the mounting frame (601); A bolt (38) is fixedly provided on the surface of the mounting plate (37) at a side away from the housing (5); an end of the bolt (38) away from the mounting plate (37) passes through the mounting frame (601); and a nut (3801) is provided on the outer peripheral surface of an end of the bolt (38) close to the mounting frame (601).

5. The plate-fin heat exchanger fin cutting device according to claim 1, characterized in that: A mounting block (30) is fixedly provided on the inner wall of the cavity (10) on the side close to the threaded rod (39); a mounting cavity (3001) is provided on the side of the mounting block (30); a slide bar (32) is fixedly provided in the mounting cavity (3001) along the length direction of the mounting block (30); a connecting slider (33) is slidably provided in the mounting cavity (3001); the connecting slider (33) is slidably provided on the outer peripheral surface of the slide bar (32); a second spring (31) is provided between the connecting slider (33) and the inner wall of the mounting cavity (3001); and the second spring (31) is sleeved on the outer peripheral surface of the slide bar (32); An adjusting gear (28) is rotatably provided on one side of the connecting slider (33), a toothed belt (29) is provided on the outer peripheral surface of the adjusting gear (28), and the adjusting gear (28), the first gear (20) and the second gear (21) are driven by the toothed belt (29).

6. A plate-fin heat exchanger fin cutting device according to any one of claims 1 to 5, characterized in that: A second motor (40) is fixedly disposed in the cavity (10), a cutting knife (41) is disposed between the cover shell (5) and the mounting seat (6), and an output end of the second motor (40) is fixedly connected to the axis of the cutting knife (41); An escape groove (2) is provided on the upper surface of the support platform (1) at a position corresponding to the cutting knife (41), and the escape groove (2) is used to leave space for the cutting knife (41) during cutting.

Images