Marine cooler fin press-fitting device

Abstract

The utility model discloses a fin press-fitting device for a marine cooler. The fin press-fitting device comprises an upper die, a lower die and a guide shaft, the upper die is arranged above the lower die in a liftable manner, a plurality of avoiding holes are formed in the upper die, a plurality of core tubes of the cooler are in one-to-one correspondence with the avoiding holes, and the core tubes can penetrate through the avoiding holes; a plurality of vertically-arranged supporting rods are arranged on the lower die, the core pipes are in one-to-one correspondence with the supporting rods, and the length of the supporting rods is smaller than that of the core pipes; the guide shaft comprises a positioning part and a guide part, and the guide part is located above the positioning part; after the positioning part is inserted into the core tube, the core tube can support the guide part; and the guide part can penetrate through the avoiding hole of the upper die. Therefore, the cooler produced by the device has the advantages of being accurate in positioning of processed products, consistent in fin spacing, good in production stability, high in yield, short in time consumption and the like.

Description

Technical Field

[0001] This utility model relates to the field of finned heat exchange equipment, and in particular to a finned pressing device for marine coolers. Background Technology

[0002] With the continuous development of industrial technology, heat exchangers and other equipment are being used more and more widely in energy, chemical, and refrigeration fields. As a crucial component of heat exchangers, the processing quality and efficiency of fins directly affect the overall performance of the equipment. Traditional fin press-fitting devices suffer from poor processing stability, low yield, and long processing times, making it difficult to meet the demands of modern industrial production, especially in the field of marine cooler core tube fin installation. Utility Model Content

[0003] To address the issues of poor yield and stability in existing cooler assembly technologies, the present invention aims to provide a marine cooler fin press-fitting device. This device enables more accurate positioning of the fins and core tubes in the cooler, thereby improving production stability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a marine cooler fin pressing device, comprising an upper mold, a lower mold, and a guide shaft; the upper mold is positioned above the lower mold in a liftable manner, and the upper mold has multiple clearance holes, with multiple core tubes of the cooler corresponding one-to-one to the multiple clearance holes, and the core tubes can pass through the clearance holes; the lower mold is provided with multiple vertically arranged support rods, with multiple core tubes corresponding one-to-one to the multiple support rods, and the length of the support rods being less than the length of the core tubes; the guide shaft includes a positioning part and a guiding part, with the guiding part located above the positioning part; after the positioning part is inserted into the core tube, the core tube can support the guiding part; the guiding part can pass through the clearance holes of the upper mold.

[0005] Preferably, the guide portion of the guide shaft is conical; the outer diameter of the bottom of the guide portion is not less than the inner diameter of the core tube.

[0006] Preferably, the outer diameter of the guide portion is not greater than the inner diameter of the mounting hole on the fin, and the positioning portion is not greater than the inner diameter of the core tube.

[0007] Preferably, the pressing device is used as a drive assembly to move the upper mold.

[0008] Preferably, the drive assembly includes a ball screw, a screw nut, and a motor; the ball screw is vertically and rotatably mounted on the worktable, the screw nut is threadedly connected to the ball screw, the screw nut is slidably engaged with a column fixed on the worktable, the screw nut is fixedly connected to the upper mold, the lower mold is fixed on the worktable, and the motor is drively connected to the ball screw; the motor can drive the ball screw to make the screw nut move the upper mold up and down.

[0009] Preferably, a crossbeam is fixed on the top of the column; the top of the ball screw is rotatably connected to the crossbeam via a first bearing, and the bottom of the ball screw is rotatably connected to the worktable via a second bearing; the motor is connected to the bottom of the ball screw.

[0010] Preferably, the output shaft of the motor is connected to the ball screw drive via a coupling.

[0011] Preferably, a vertically arranged guide rail is fixed on the column, the slider is slidably mounted on the guide rail, a support base is fixed on the slider, and the lead screw nut and the upper mold are both fixed on the support base.

[0012] The beneficial effects of this utility model's technical solution are as follows: the upper mold can precisely control the position of each fin, ensuring that the fin spacing is basically consistent, making it suitable for the installation of both flat and corrugated fins; the support rod on the lower mold effectively supports the inner wall of the core tube, ensuring the shape of the core tube during pressing, thus making the device suitable for copper core tubes and composite core tubes; before pressing, the guide shaft can support the fins and perform rough positioning of the fins and core tube; during pressing, the guide shaft can gradually correct the relative position of the top of the core tube and the fin mounting hole, allowing the fins to be accurately installed on the core tube, thereby avoiding interference between the fins and the core tube; the cooler produced using the above device has advantages such as accurate product positioning, consistent fin spacing, good production stability, high yield, and shorter processing time. Attached Figure Description

[0013] Figure 1 A schematic diagram of a marine cooler fin press-fitting device;

[0014] Figure 2 This is a schematic diagram of the drive component.

[0015] Figure 3 This is a schematic diagram of the fin structure;

[0016] Figure 4 This is a schematic diagram of the guide shaft structure;

[0017] Figure 5 This is a schematic diagram of the mandrel structure.

[0018] Reference numerals: 11. Workbench; 12. Column; 13. Column; 2. Lower mold; 21. Support rod; 3. Upper mold; 31. Clearance hole; 41. Motor; 42. Coupling; 43. Second bearing; 44. Ball screw; 45. Screw nut; 47. Support base; 48. Slider; 49. Guide rail; 5. Electrical cabinet; 6. Guide shaft; 61. Guide part; 62. Positioning part; 7. Core tube; 8. Fin; 81. Mounting hole. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Example

[0024] like Figures 1 to 5 The device shown is a marine cooler fin press-fitting device for assembling the core tube 7 and fin 8 of the cooler. The fin 8 is provided with multiple mounting holes 81, and the multiple core tubes 7 correspond one-to-one with the multiple mounting holes 81 on the fin 8. The core tubes 7 pass through the mounting holes 81 on the fin 8.

[0025] The fin pressing device includes an upper mold 3, a lower mold 2, a guide shaft 6, and a driving assembly for driving the upper mold 3 to move up and down above the lower mold 2. The upper mold 3 has multiple clearance holes, and multiple core tubes 7 correspond one-to-one with the multiple clearance holes 31. The lower mold 2 is provided with multiple vertically arranged support rods 21, and multiple core tubes 7 correspond one-to-one with the multiple support rods 21. The length of the support rods 21 is less than the length of the core tubes 7. The guide shaft 6 includes a positioning part 62 and a guiding part 61. The guiding part 61 is located above the positioning part 62. The outer diameter of the guiding part 61 is not greater than the inner diameter of the mounting hole 81 on the fin 8. The positioning part 62 is not greater than the inner diameter of the core tube 7. After the positioning part 62 is inserted into the core tube 7, the core tube 7 can support the guiding part 61.

[0026] When assembling the fins 8 and the core tubes 7: first, multiple core tubes 7 are respectively fitted onto multiple support rods 21; then, multiple guide shafts 6 are respectively installed on the top of multiple core tubes 7; then, the fins 8 are placed on the guide shafts 6, wherein the guide shafts 6 are inserted into the mounting holes 81 of the fins 8; then, the upper mold 3 moves down to press down on the fins 8, and the upper mold 3 pushes the fins 8 down so that the guide shafts 6 pass through the mounting holes 81 of the fins 8, so that the fins 8 are installed in the designated position of the core tubes 7.

[0027] This setup allows for precise control of the fin positions via the upper mold, ensuring consistent fin spacing and accommodating both flat and corrugated fins. The support rods on the lower mold effectively support the inner wall of the core tube, guaranteeing its shape during pressing and making the device suitable for copper and composite core tubes. Before pressing, the guide shaft supports the fins and provides rough positioning of the fins and core tube. During pressing, the guide shaft gradually corrects the relative position of the top of the core tube and the fin mounting holes, ensuring precise fin installation on the core tube and preventing interference between them. Coolers produced using this device offer advantages such as accurate product positioning, consistent fin spacing, high production stability, high yield, and shorter processing time.

[0028] In this embodiment, the guide portion 61 of the guide shaft 6 is conical; the outer diameter of the bottom of the guide portion 61 is not less than the inner diameter of the core tube 7; in this way, the positioning of the fin 8 and the guide shaft 6 can be made simpler, and the accuracy and efficiency of the press fitting can be further guaranteed.

[0029] In this embodiment, as Figure 1 and Figure 2As shown, the pressing device also includes a worktable 11, a column 12, and a drive assembly for moving the upper mold 3. The column 12 is vertically fixed on the worktable 11, the upper mold 3 is slidably mounted on the column 12, and the lower mold 2 is fixed on the top of the worktable 11. A crossbeam 13 is fixed on the top of the column 12. The drive assembly includes a ball screw 44, a screw nut 45, and a motor 41. The ball screw 44 is vertically arranged, and its top is rotatably engaged with the crossbeam 13 through a first bearing. Its bottom is rotatably engaged with the worktable 11 through a second bearing 43. The screw nut 45 is threadedly connected to the ball screw 44 and is fixedly connected to the upper mold 3. The motor 41 is drively connected to the ball screw 44.

[0030] Furthermore, the motor 41 is mounted on the worktable 11, and the motor 41 is located below the ball screw 44. The output shaft of the motor 41 is connected to the ball screw 44 through the coupling 42.

[0031] Furthermore, a vertically arranged guide rail 49 is fixed on the column 12, and a slider 48 is slidably mounted on the guide rail 49. A support base 47 is fixed on the slider 48, and the lead screw nut 45 and the upper mold 3 are both fixed on the support base 47.

[0032] Furthermore, the support base 47 is provided with multiple first positioning holes, and the upper mold 3 is provided with multiple second positioning holes. The multiple first positioning holes and multiple second positioning holes correspond one-to-one. Fasteners pass through the first positioning holes and the second positioning holes to fix the upper mold 3 to the support base 47. The fasteners include bolts and nuts.

[0033] In this embodiment, a lower mold 2 seat is provided on the top of the workbench 11. The lower mold 2 is fixed on the lower mold 2 seat by a pressure plate. The pressure plate can be fixedly connected to the lower mold 2 seat by fasteners.

[0034] In this embodiment, the pressing device also includes an electrical cabinet 5 and a CNC system for controlling the lifting and lowering of the upper mold 3. The operator controls the motor 41 to rotate forward or backward through the CNC system operated by the electrical cabinet, thereby controlling the upper mold 3 to rise, fall, and stop, and gradually install multiple fins 8 onto the core tube 7.

[0035] Before assembling the core tube 7 and fins 8 using the above-mentioned press-fitting device, select the appropriate upper mold 3 and lower mold 2 according to the cooler to be processed, install the selected upper mold 3 on the support base 47, and install the selected lower mold 2 on the lower mold 2 base.

[0036] When assembling the core tube 7 and fins 8 using the aforementioned press-fitting device, multiple core tubes 7 are respectively fitted onto multiple support rods 21; then multiple guide shafts 6 are respectively installed on the top of multiple core tubes 7, wherein the positioning part 62 of the guide shaft 6 is inserted into the top of the core tube 7, and the core tube 7 supports the guiding part 61 of the guide shaft 6; then the fins 8 are placed on the guide shaft 6, wherein the top of the guide shaft 6 is inserted into the mounting hole 81 of the fin 8; then the motor 41 drives the ball screw 44 to rotate, causing the support base 47 to move the upper mold 3 downward, and the upper mold 3 moves downward to press down on the fins 8, moving the fins 8 to the braking position; then the motor 41 reverses to drive the upper mold 3 away from the core tube 7; then the placement of the fins 8 is repeated, and the motor 41 is repeatedly started until the assembly of the fins 8 and core tube 7 is completed.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A marine chiller fin press fitting device characterized by: The fin press-fitting device comprises an upper die (3), a lower die (2) and a guide shaft (6); the upper die (3) is arranged above the lower die (2) in a liftable manner, a plurality of avoiding holes (31) are formed in the upper die (3), a plurality of core pipes (7) of a cooler correspond to the plurality of avoiding holes (31) one by one, and the core pipes (7) can pass through the avoiding holes (31); A plurality of vertically arranged supporting rods (21) are arranged on the lower die (2), the plurality of core pipes (7) correspond to the plurality of supporting rods (21) one by one, and the length of the supporting rods (21) is smaller than the length of the core pipes (7); The guide shaft (6) comprises a positioning portion (62) and a guide portion (61), the guide portion (61) is located above the positioning portion (62); after the positioning portion (62) is inserted into the core pipe (7), the core pipe (7) can support the guide portion (61); the guide portion (61) can pass through the avoiding hole (31) of the upper die (3).

2. A marine chiller fin press fitting device according to claim 1, characterized in that: The guide portion (61) of the guide shaft (6) is conical; the outer diameter of the bottom of the guide portion (61) is not less than the inner diameter of the core pipe (7).

3. A marine chiller fin press fitting device as claimed in claim 2, wherein: The outer diameter of the guide portion (61) is not greater than the inner diameter of the mounting hole (81) of the fin (8), and the positioning portion (62) is not greater than the inner diameter of the core pipe (7).

4. A marine chiller fin press fitting device according to claim 1, characterized in that: The press-fitting device is used for driving the movement of the upper die (3).

5. A marine chiller fin press fitting device as claimed in claim 4, wherein: The driving assembly comprises a ball screw (44), a screw nut (45) and a motor (41); the ball screw (44) is vertically rotatably arranged on a workbench (11), the screw nut (45) is threadedly connected with the ball screw (44), the screw nut (45) is slidingly connected with a column (12) fixed on the workbench (11), the screw nut (45) is fixedly connected with the upper die (3), the lower die (2) is fixed on the workbench (11), and the motor (41) is drivingly connected with the ball screw (44); the motor (41) can drive the ball screw (44) to move the upper die (3) up and down.

6. A marine chiller fin press fitting device as claimed in claim 5, wherein: A cross beam (13) is fixed on the top of the column (12); the top of the ball screw (44) is rotatably connected with the cross beam (13) through a first bearing, and the bottom of the ball screw (44) is rotatably connected with the workbench (11) through a second bearing (43); the motor (41) is connected with the bottom of the ball screw (44).

7. A marine chiller fin press fitting device as claimed in claim 5, wherein: The output shaft of the motor (41) is drivingly connected with the ball screw (44) through a shaft coupling (42).

8. A marine chiller fin press fitting device as claimed in claim 5, wherein: A vertical guide rail (49) is fixed on the column (12), a sliding block (48) is slidingly arranged on the guide rail (49), a supporting seat (47) is fixed on the sliding block (48), and the screw nut (45) and the upper die (3) are both fixed on the supporting seat (47).

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