A heat exchanger fin punching device

Abstract

The utility model discloses a heat exchanger fin punching equipment belongs to sheet material processing technical field, including machine table, stamping assembly and drive part, is equipped with the accommodation groove for placing metal sheet material on machine table, and stamping assembly includes movable block and installs the stamping die head on movable block under the action of drive part and can move along the longitudinal direction, and the outer portion of stamping die head is slidably sleeved with the pressing plate, and the elastic piece is telescopically arranged between the pressing plate and movable block, and the accommodation groove is provided with the avoiding hole corresponding with stamping die head on the groove bottom wall, and the side portion of accommodation groove is installed with the baffle on machine table, and the baffle is movable relative to machine table, and movable baffle can make the baffle partial shielding in the upper of accommodation groove. The utility model discloses a heat exchanger fin punching equipment, and the extrusion of pressing plate to metal sheet material can prevent the cracking and deformation from happening in the punching process, and simultaneously, the baffle can guarantee that metal sheet material is separated from stamping die head, and the feeding and discharging operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, and in particular, to a heat exchanger fin punching device. Background Technology

[0002] Finned heat exchangers are heat exchange devices that use high-frequency welding technology to tightly connect metal fins to copper base tubes to enhance heat transfer efficiency. They are widely used in petrochemical, air conditioning, refrigeration and other fields.

[0003] A finned heat exchanger mainly consists of fins and a base tube. The base tube has a serpentine structure, and the fins are multiple and parallel to each other. The base tube passes through the fins. In operation, when the cooling fluid flows through the base tube, heat is first transferred from the fluid to the inner wall of the base tube, and then conducted through the base tube to the outer wall and the fins, thus exchanging heat with the hot airflow flowing outside the base tube. To improve the heat exchange efficiency of the fins, in addition to machining through holes for the base tube to pass through, through grooves are also machined into the fins.

[0004] Currently, the processing method for through holes and slots on heat exchanger fins is generally stamping. During processing, the fins are placed on a carrier plate, and a cylinder is activated to move the stamping die downwards, thus punching out the through holes and slots. However, the above-mentioned stamping process generally has some problems. For example, during stamping, the parts of the fins located around the through holes and slots are prone to deformation and cracking. Also, after stamping, the connection between the stamping die and the through hole or slot is relatively tight. When moving the stamping die upwards, the fins are sometimes moved upwards along with it. Users need to pull the fins off the stamping die before they can replace them with new sheets for stamping, which is cumbersome and increases the time required for unloading and loading, hindering efficient production. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a heat exchanger fin punching equipment with high punching quality and easy loading and unloading is provided.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a heat exchanger fin punching device, including a machine base, a stamping assembly and a driving component. The machine base is provided with a receiving groove for placing metal plates. The stamping assembly includes a movable block that can move longitudinally under the action of the driving component and a stamping die head installed on the movable block. A pressure plate is slidably sleeved on the outside of the stamping die head. An elastic element is provided between the pressure plate and the movable block. An avoidance hole corresponding to the stamping die head is opened on the bottom wall of the receiving groove. A baffle is installed on the side of the receiving groove on the machine base. The baffle is movable relative to the machine base. Moving the baffle can make the baffle part cover the top of the receiving groove.

[0007] Furthermore, a telescopic rod is provided between the pressure plate and the movable block. The telescopic rod includes a fixed rod fixedly connected to the movable block and an outer sleeve fixedly connected to the pressure plate. The outer sleeve is slidably sleeved on the outside of the fixed rod.

[0008] Furthermore, a limiting edge is formed at the top of the outer sleeve, and a limiting protrusion is provided at the lower end of the fixing rod, which can abut against the limiting edge.

[0009] Furthermore, the elastic element is a spring sleeved on the outside of the telescopic rod.

[0010] Furthermore, the machine tool includes a carrier plate, the receiving groove is disposed on the carrier plate, a rotating pin is fixedly installed at one end of the baffle, the rotating pin is perpendicular to the baffle, and the lower end of the rotating pin is rotatably connected to the carrier plate.

[0011] Furthermore, a material-taking groove is formed on the outer wall of one side of the carrier plate along the horizontal direction, and the material-taking groove is connected to the receiving groove.

[0012] Furthermore, multiple columns are fixedly connected to the carrier plate, and a support plate is fixedly connected to the upper end of each column. The driving component is mounted on the support plate.

[0013] Furthermore, the heat exchanger fin punching equipment also includes a receiving assembly, which includes a drive wheel and a driven wheel that are rotatable relative to the machine platform, and a conveyor belt that is simultaneously sleeved between the drive wheel and the driven wheel. The corresponding receiving groove of the conveyor belt is located below the carrier plate.

[0014] Furthermore, the machine tool also includes a base, on which brackets are fixedly installed on opposite sides. The driving wheel and the driven wheel are rotatably mounted on the two brackets, and a motor for driving the driving wheel to rotate is installed on one of the brackets.

[0015] The beneficial effects of this utility model are as follows: In the heat exchanger fin punching equipment of this utility model, during the punching process, the pressure plate is always pressed tightly against the metal plate under the elastic force of the elastic element. Except for the position to be punched, the metal plate is squeezed and fixed, which increases the structural strength of the area around the punching of the metal plate and effectively avoids deformation and cracking of the metal plate. The punching quality is high. At the same time, by setting a movable baffle on the side of the receiving groove, the metal plate is blocked by the baffle, which ensures that the metal plate is separated from the punching die when the punching die is reset. This greatly facilitates the user's material unloading and loading operations and is conducive to efficient production. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a perspective view of the heat exchanger fin punching device of this utility model;

[0018] Figure 2 yes Figure 1 The front view of the heat exchanger fin punching equipment shown.

[0019] Figure 3 yes Figure 1 The top view of the heat exchanger fin punching equipment shown.

[0020] Figure 4 yes Figure 3 The heat exchanger fin punching device shown is a cross-sectional view along AA.

[0021] Figure 5 yes Figure 4 A magnified view of part B in the heat exchanger fin punching equipment shown.

[0022] In the diagram: 10. Machine base; 11. Carrier plate; 110. Receiving groove; 101. Clearance hole; 12. Support foot; 13. Baffle; 131. Rotating pin; 111. Material receiving groove; 14. Column; 15. Support plate; 16. Base; 17. Bracket; 18. Motor; 20. Stamping assembly; 21. Movable block; 22. Stamping die head; 23. Pressure plate; 25. Elastic element; 24. Telescopic rod; 241. Fixed rod; 242. Outer sleeve; 2411. Limiting protrusion; 2421. Limiting edge; 30. Drive component; 40. Material receiving assembly; 41. Drive wheel; 42. Driven wheel; 43. Conveyor belt. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] Please see Figures 1-5 This utility model provides a heat exchanger fin punching device for punching fins. It includes a machine base 10, a punching assembly 20, a drive unit 30, and a receiving assembly 40. In use, the metal sheet to be punched is placed on the machine base 10. The punching assembly 20 is located above the sheet and connected to the drive unit 30. When the drive unit 30 is started, it can drive the punching assembly 20 to move downward, thereby punching the sheet. The receiving assembly 40 is located below the sheet. The waste generated after punching by the punching assembly 20 falls onto the receiving assembly 40, thereby collecting the waste in a timely manner.

[0025] The machine base 10 includes a carrier plate 11 and a plurality of support legs 12 fixedly connected to the bottom of the carrier plate 11. The carrier plate 11 is supported on a bearing surface (e.g., a factory floor) by the support legs 12. A receiving groove 110 is recessed on the upper surface of the carrier plate 11 for placing the metal sheet to be punched. In this embodiment, the carrier plate 11 has a rectangular plate structure.

[0026] The stamping assembly 20 includes a movable block 21 and a stamping die 22 fixedly mounted on the movable block 21. The movable block 21 is movably disposed above the carrier plate 11 along the longitudinal direction, and the stamping die 22 is fixedly mounted on the lower surface of the movable block 21. The movable block 21 is connected to a driving member 30. Under the action of the driving member 30, the movable block 21 can move downward along the longitudinal direction, thereby driving the stamping die 22 to move downward. When the stamping die 22 moves downward, it can perform a stamping operation on the metal sheet.

[0027] Furthermore, the machine tool 10 is provided with a clearance hole 101. Specifically, the clearance hole 101 is formed on the bottom wall of the receiving groove 110. The stamping die 22 matches the shape of the clearance hole 101 and is positioned accordingly. Thus, when the stamping die 22 presses downward, it can punch through holes of a specific shape in the metal sheet. As a preferred embodiment, the stamping die 22 has two shapes: a cylindrical structure and a cuboid structure. The cylindrical stamping die 22 punches circular through holes in the metal sheet for connecting the base tube, while the cuboid stamping die 22 punches rectangular through holes in the metal sheet. The rectangular through holes can increase the heat exchange area of ​​the fins, thereby improving the heat exchange effect.

[0028] A baffle 13 is installed on the side of the receiving groove 110 on the carrier plate 11. The baffle 13 is movable relative to the carrier plate 11, and the movable baffle 13 can partially cover the upper part of the receiving groove 110. In this embodiment, one end of the baffle 13 is rotatably connected to the upper surface of the carrier plate 11. When the metal sheet to be punched is placed in the receiving groove 110, by rotating the baffle 13 in the horizontal plane, the other end of the baffle 13 can be moved to the upper part of the receiving groove 110, thereby blocking the metal sheet. In this way, the baffle 13 has a blocking effect on the metal sheet. After punching is completed, when the stamping die 22 moves upward, the metal sheet will not move upward with the stamping die 22 due to the blocking effect of the baffle 13, ensuring that the metal sheet separates from the stamping die 22 when the stamping die 22 is reset. After the stamping die 22 is separated from the stamping die 22, the user rotates the baffle 13 so that one end of the baffle 13 moves to the side outside the receiving groove 110, thereby removing the obstruction to the metal sheet. At this time, the user can take out the metal sheet after punching from the receiving groove 110.

[0029] In a preferred embodiment, a rotating pin 131 is fixedly mounted on one end of the baffle 13. The rotating pin 131 is perpendicular to the baffle 13, and the lower end of the rotating pin 131 is rotatably connected to the carrier plate 11. Meanwhile, to improve the rotational stability of the rotating pin 131, a bearing is provided between the rotating pin 131 and the carrier plate 11. Furthermore, the baffle 13 has four sections, with two baffles 13 provided on each of the opposite sides of the receiving groove 110.

[0030] In addition, a material-retrieving groove 111 is formed on the outer wall of one side of the carrier plate 11 along the horizontal direction, and the material-retrieving groove 111 is connected to the receiving groove 110. In use, after punching is completed, the user can take out the metal plate in the receiving groove 110 through the material-retrieving groove 111, which greatly facilitates the user's operation.

[0031] The stamping assembly 20 also includes a pressure plate 23, which is slidably mounted on the stamping die 22 along the longitudinal direction. The stamping die 22 passes through the pressure plate 23. An elastic element 25 is telescopically provided between the pressure plate 23 and the movable block 21. In the initial state, the pressure plate 23 is in a low position under the elastic force of the elastic element 25. At this time, the lower end of the stamping die 22 is located in the through hole of the pressure plate 23. When the movable block 21 moves downward under the drive of the drive member 30, the pressure plate 23 also moves downward at the same time. When the lower surface of the pressure plate 23 presses on the metal sheet below, the movable block 21 continues to move downward, and the elastic element 25 will be compressed. The stamping die 22 gradually passes through the pressure plate 23 and finally performs a punching operation on the metal sheet. During the punching process, the pressure plate 23 is constantly pressed tightly against the metal sheet by the elastic force of the elastic element 25. This means that the metal sheet, except for the area to be punched, is compressed and fixed, increasing the structural strength of the area around the punched hole and effectively preventing deformation and cracking. After punching is completed, the punching die 22 resets, and the pressure plate 23 also resets under the action of the elastic element 25. Furthermore, the area of ​​the lower surface of the pressure plate 23 is smaller than the area of ​​the bottom wall of the receiving groove 110. This prevents the surrounding area of ​​the metal sheet from being squeezed by the pressure plate 23. The end of the baffle 13 used to block the metal sheet is precisely located at this un-compressed part of the metal sheet, thus providing a buffering effect.

[0032] Please refer to it again. Figure 4 , Figure 5In this embodiment, a telescopic rod 24 is provided between the pressure plate 23 and the movable block 21. The telescopic rod 24 includes a fixed rod 241 and an outer sleeve 242. The upper end of the fixed rod 241 is fixedly connected to the lower surface of the movable block 21, and the lower end of the outer sleeve 242 is fixedly connected to the upper surface of the pressure plate 23. The outer sleeve 242 is slidably sleeved on the outside of the fixed rod 241. The elastic element 25 is a spring sleeved on the outside of the telescopic rod 24. In addition, a limiting edge 2421 is formed at the top of the outer sleeve 242, and a limiting protrusion 2411 is provided at the lower end of the fixed rod 241. The limiting protrusion 2411 can abut against the limiting edge 2421. In the initial state, when the pressure plate 23 is in the lower position under the elastic force of the elastic element 25, the limiting protrusion 2411 abuts against the lower part of the limiting edge 2421, thereby preventing the fixed rod 241 and the outer sleeve 242 from separating from each other.

[0033] Multiple columns 14 are vertically fixedly connected to the upper surface of the carrier plate 11. A support plate 15 is fixedly connected to the upper end of the columns 14, and the driving component 30 is mounted on the support plate 15. In this embodiment, the driving component 30 is a cylinder. The cylinder body end is fixedly connected to the support plate 15, and the extended end of the cylinder is fixedly connected to the top of the movable block 21. During operation, the stamping assembly 20 is driven to move longitudinally by controlling the extension and retraction of the cylinder.

[0034] In this embodiment, the receiving assembly 40 includes a drive wheel 41, a driven wheel 42, and a conveyor belt 43. The drive wheel 41 and the driven wheel 42 are rotatable relative to the machine base 1. The conveyor belt 43 is located below the carrier plate 11, corresponding to the receiving groove 110, and is simultaneously sleeved between the drive wheel 41 and the driven wheel 42. In use, the drive wheel 41 rotates, driving the driven wheel to rotate under the action of the conveyor belt 43. The waste generated when the stamping assembly 20 is working will fall onto the conveyor belt 43 through the clearance hole 101, and then be uniformly transported to one side of the machine base 10 for collection along with the conveyor belt 43. In a specific embodiment, a receiving bin is provided below one end of the conveyor belt 43, and the waste transported to one end of the conveyor belt 43 will eventually fall into the receiving bin.

[0035] Furthermore, the machine base 10 also includes a base 16, the lower end of the support leg 12 is fixedly connected to the base 16, and brackets 17 are fixedly installed on opposite sides of the upper surface of the base 16. The drive wheel 41 and the driven wheel 42 are respectively rotatably installed on the two brackets 17, and a motor 18 is installed on one of the brackets 17. The motor 18 is used to drive the drive wheel 41 to rotate.

[0036] This utility model discloses a heat exchanger fin punching device. During the punching process, the pressure plate 23 is always pressed tightly against the metal plate by the elastic force of the elastic element 25. Except for the position to be punched, the metal plate is squeezed and fixed, which increases the structural strength of the area around the punching hole and effectively avoids deformation and cracking of the metal plate. The punching quality is high. At the same time, by setting a movable baffle 13 on the side of the receiving groove 110, the metal plate is blocked by the baffle 13, which ensures that the metal plate is separated from the stamping die 22 when the stamping die 22 is reset. This greatly facilitates the user's material unloading and loading operations and is conducive to efficient production.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A heat exchanger fin punching device, characterized in that: The device includes a machine base, a stamping assembly, and a driving component. The machine base is provided with a receiving groove for placing metal sheets. The stamping assembly includes a movable block that can move longitudinally under the action of the driving component and a stamping die head mounted on the movable block. A pressure plate is slidably fitted on the outside of the stamping die head. An elastic element is provided between the pressure plate and the movable block that can extend and retract. The bottom wall of the receiving groove is provided with a clearance hole corresponding to the stamping die head. A baffle is installed on the side of the receiving groove on the machine base. The baffle is movable relative to the machine base. Moving the baffle allows the baffle to partially cover the top of the receiving groove.

2. The heat exchanger fin punching equipment as described in claim 1, characterized in that: A telescopic rod is provided between the pressure plate and the movable block. The telescopic rod includes a fixed rod that is fixedly connected to the movable block and an outer sleeve that is fixedly connected to the pressure plate. The outer sleeve is slidably fitted over the fixed rod.

3. The heat exchanger fin punching equipment as described in claim 2, characterized in that: The top of the outer sleeve forms a limiting edge, and the lower end of the fixing rod is provided with a limiting protrusion, which can abut against the limiting edge.

4. The heat exchanger fin punching equipment as described in claim 2 or 3, characterized in that: The elastic element is a spring that is sleeved on the outside of the telescopic rod.

5. The heat exchanger fin punching equipment as described in claim 1, characterized in that: The machine base includes a carrier plate, the receiving groove is disposed on the carrier plate, a rotating pin is fixedly installed at one end of the baffle, the rotating pin is perpendicular to the baffle, and the lower end of the rotating pin is rotatably connected to the carrier plate.

6. The heat exchanger fin punching equipment as described in claim 5, characterized in that: A material-taking groove is formed on the outer wall of one side of the carrier plate along the horizontal direction, and the material-taking groove is connected to the receiving groove.

7. The heat exchanger fin punching equipment as described in claim 5, characterized in that: Multiple columns are fixedly connected to the carrier plate, and a support plate is fixedly connected to the upper end of each column. The driving component is mounted on the support plate.

8. The heat exchanger fin punching equipment as described in claim 5, characterized in that: The heat exchanger fin punching equipment also includes a receiving assembly, which includes a drive wheel and a driven wheel that are rotatable relative to the machine platform, and a conveyor belt that is simultaneously sleeved between the drive wheel and the driven wheel. The corresponding receiving groove of the conveyor belt is located below the carrier plate.

9. The heat exchanger fin punching equipment as described in claim 8, characterized in that: The machine base also includes a base, on which brackets are fixedly installed on opposite sides. The driving wheel and the driven wheel are rotatably mounted on the two brackets, and a motor for driving the driving wheel is installed on one of the brackets.

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