Punching equipment for heat exchanger fins

Abstract

The utility model relates to the technical field of heat exchanger fin machining, and discloses a heat exchanger fin punching device which comprises a workbench, the upper surface of the workbench is fixedly connected with a bottom plate, the upper surface of the bottom plate is fixedly connected with a plurality of symmetrical connecting rods, the top ends of the connecting rods are fixedly connected with an upper die, and the top ends of the upper die are fixedly connected with a lower die. The upper surface of the upper mold is fixedly connected with a hydraulic cylinder, one end of the hydraulic cylinder penetrates through the lower surface of the upper mold to be fixedly connected with a pressing plate, the lower surface of the pressing plate is detachably connected with a mold core through a bolt, and the upper surface of the bottom plate is detachably connected with a lower mold through a bolt; a core groove matched with the mold core in shape is formed in the upper surface of the lower mold, and a square groove is formed in the inner wall of the bottom of the core groove. According to the utility model, a workpiece in the core groove can be jacked up for a certain distance, so that the workpiece is separated from the inner wall of the core groove, and the condition that the pressing plate cannot reset upwards when the hydraulic cylinder fails can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger fin processing technology, and more specifically to a heat exchanger fin punching equipment. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It is used in many fields and comes in various models, one of which is the finned heat exchanger.

[0003] A search revealed a Chinese patent with authorization announcement number CN214719760U, which discloses a stamping die. This device is reusable, ready to use after disassembly, reduces material costs, is quick to replace, and is highly efficient. However, after stamping the workpiece, it is difficult to manually remove the workpiece because it is tightly attached to the die after processing. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a heat exchanger fin stamping device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a heat exchanger fin punching device, including a workbench, a base plate fixedly connected to the upper surface of the workbench, a plurality of symmetrical connecting rods fixedly connected to the upper surface of the base plate, an upper mold fixedly connected to the top of the plurality of connecting rods, a hydraulic cylinder fixedly connected to the upper surface of the upper mold, a pressure plate fixedly connected to one end of the hydraulic cylinder through the lower surface of the upper mold, a mold core detachably connected to the lower surface of the pressure plate by bolts, a lower mold detachably connected to the upper surface of the base plate by bolts, a core groove matching the shape of the mold core being opened on the upper surface of the lower mold, a square groove being opened on the bottom inner wall of the core groove, a lifting block being slidably connected in the square groove, two through-holes being opened inside the lower mold, the two through-holes being symmetrically distributed and communicating with the square groove, a sliding plate being slidably connected in the through-holes, and both ends of the sliding plate extending to the outside of the through-holes, a plurality of symmetrical second springs being fixedly connected to the lower surface of the sliding plate, and a plurality of fixing blocks corresponding to the extensions of the sliding plates being fixedly connected to the lower surface of the pressure plate.

[0006] As a further embodiment of this utility model, a limiting groove is provided on the inner wall of the square groove, and a limiting plate is fixedly connected to the bottom of the lifting block, and the limiting plate slides in the limiting groove.

[0007] As a further embodiment of this utility model, the upper mold has two sliding holes, which are symmetrically located on both sides of the hydraulic cylinder. Each sliding hole is slidably connected to a sliding rod, and the bottom ends of the two sliding rods are fixed to the upper surface of the pressure plate. The top ends of the two sliding rods are fixedly connected to a circular plate, and the lower surface of the circular plate is fixedly connected to a first spring, with the other end of the first spring fixed to the upper surface of the upper mold.

[0008] As a further embodiment of this utility model, a plurality of guide rods are fixedly connected between the top inner wall and the bottom inner wall of the clearance opening, and the plurality of guide rods pass through the slide plate and are slidably connected thereto.

[0009] As a further embodiment of this utility model, through holes are provided at the four corners of the pressure plate, and sliding sleeves are provided in the multiple through holes, with multiple connecting rods passing through the corresponding sliding sleeves and slidably connected to them.

[0010] As a further embodiment of this utility model, the upper surface of the sliding plate contacts the lower surface of the limiting plate, and the height of the clearance opening is greater than the depth of the limiting groove.

[0011] As a further embodiment of this utility model, support legs are fixedly connected to the four corners of the bottom of the workbench, and a fixing plate is fixedly connected to the bottom of each support leg. Mounting holes are provided at the four corners of each fixing plate.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention uses a sliding plate and a lifting block to lift the workpiece in the core groove by one end after the stamping is completed, so that the workpiece is separated from the inner wall of the core groove, making it convenient for workers to take the formed workpiece out of the device.

[0014] This utility model, through the provision of a limiting groove and a limiting plate, can limit the sliding distance of the lifting block, preventing the lifting block from sliding down too far and causing unsatisfactory workpiece processing.

[0015] This utility model, through the provided slide bar and first spring, can increase the upward force when the hydraulic cylinder contracts, and can also prevent the pressure plate from failing to reset upward when the hydraulic cylinder fails. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a partially enlarged structural schematic diagram of the present invention.

[0018] Figure 3 This is a partially enlarged structural schematic diagram of the present invention.

[0019] Figure 4 This is a partial cross-sectional view of the present invention.

[0020] Figure 5 This is a schematic diagram showing a partial working structure of the present invention.

[0021] The attached diagram is labeled as follows: 1. Workbench; 2. Base plate; 3. Connecting rod; 4. Upper mold; 5. Lower mold; 6. Pressure plate; 7. Hydraulic cylinder; 8. Slide rod; 9. First spring; 10. Mold core; 11. Fixing block; 12. Square groove; 13. Lifting block; 14. Alternating opening; 15. Slide plate; 16. Limiting groove; 17. Limiting plate; 18. Core groove; 19. Guide rod; 20. Second spring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-5 This utility model provides a heat exchanger fin punching device, including a workbench 1. A base plate 2 is bolted to the upper surface of the workbench 1. A plurality of symmetrical connecting rods 3 are bolted to the upper surface of the base plate 2. An upper mold 4 is bolted to the top of the plurality of connecting rods 3. A hydraulic cylinder 7 is bolted to the upper surface of the upper mold 4. One end of the hydraulic cylinder 7 passes through the lower surface of the upper mold 4 and is bolted to a pressure plate 6. A mold core 10 is detachably bolted to the lower surface of the pressure plate 6. A lower mold 5 is detachably bolted to the upper surface of the base plate 2. A core groove 18 matching the shape of the mold core 10 is formed on the upper surface of the lower mold 5. A square groove is formed on the bottom inner wall of the core groove 18. 12. A lifting block 13 is slidably connected inside the square groove 12. Two through-holes 14 are opened inside the lower mold 5, and the two through-holes 14 are symmetrically distributed and connected to the square groove 12. A sliding plate 15 is slidably connected inside the through-hole 14, and both ends of the sliding plate 15 extend to the outside of the through-hole 14. Multiple symmetrical second springs 20 are welded to the lower surface of the sliding plate 15. Multiple fixing blocks 11 corresponding to the extension of the multiple sliding plates 15 are fixedly connected to the lower surface of the pressure plate 6 by bolts. With the provided sliding plate 15 and lifting block 13, the workpiece in the core groove 18 can be lifted one end distance after the stamping is completed, so that the workpiece is separated from the inner wall of the core groove 18, making it convenient for the operator to take out the formed workpiece from the device.

[0024] The inner wall of the square groove 12 has a limiting groove 16. The bottom of the lifting block 13 is fixedly connected to a limiting plate 17 by bolts, and the limiting plate 17 slides within the limiting groove 16. Through the limiting groove 16 and the limiting plate 17, the sliding distance of the lifting block 13 can be limited to prevent the lifting block from sliding too far downward, which would lead to unsatisfactory workpiece processing. The upper mold 4 has two sliding holes, which are symmetrically located on both sides of the hydraulic cylinder 7. Both sliding holes are slidably connected to sliding rods 8, and the two sliding rods 8... The bottom ends are fixed to the upper surface of the pressure plate 6. A circular plate is welded to the top of each of the two sliding rods 8, and a first spring 9 is welded to the lower surface of the circular plate. The other end of the first spring 9 is fixed to the upper surface of the upper mold 4. Through the sliding rods 8 and the first spring 9, the upward force can be increased when the hydraulic cylinder 7 contracts. This also prevents the pressure plate 6 from failing to return to its original position if the hydraulic cylinder 7 fails. Multiple guide rods 19 are welded between the top and bottom inner walls of the clearance opening 14, and all guide rods 19 pass through the sliding plate 15 and are connected to it. The sliding connection, through the provided guide rod 19, guides the slide plate 15 as it slides along the clearance opening 14, preventing the slide plate 15 from deviating during the sliding process. Through holes are provided at the four corners of the pressure plate 6, and multiple through holes are provided with sliding sleeves. Multiple connecting rods 3 pass through the corresponding sliding sleeves and slide with them. By providing the sliding sleeves and allowing the connecting rods 3 to slide through the pressure plate 6, the pressure plate 6 can be guided during downward movement, making its movement more stable. The upper surface of the slide plate 15 contacts the lower surface of the limiting plate 17. The height of the clearance opening 14 is greater than the depth of the limiting groove 16. By setting the height of the clearance opening 14 to be greater than the depth of the limiting groove 16, the slide plate 15 can disengage from the limiting plate 17 when moving downward, preventing interference. Support legs are fixedly connected to the four corners of the bottom of the worktable 1 by bolts. Fixing plates are fixedly connected to the bottom of the support legs by bolts. Mounting holes are provided at the four corners of the fixing plates. The fixing plates and mounting holes can be used to fix the device, increasing the overall stability of the device.

[0025] The use of this utility model involves the following steps:

[0026] S1: When in use, the hydraulic cylinder 7 is activated to extend and drive the pressure plate 6 to slide down along the connecting rod 3. The pressure plate 6 slides down and causes the fixing block 11 to push against the slide plate 15 and slide down along the clearance opening 14. At this time, the second spring 20 is under force. Since the slide plate 15 is in contact with the limiting plate 17, when the slide plate 15 slides down, the limiting plate 17 slides down along the limiting groove 16, and the lifting block 13 moves down.

[0027] S2: When the lower surface of the limiting plate 17 contacts, the upper surface of the lifting block 13 is aligned with the bottom inner wall of the core groove 18. The pressure plate 6 continues to move downward and the mold core 10 is embedded in the core groove 18 to punch the workpiece.

[0028] S3: After the stamping is completed, the retracting hydraulic cylinder 7 drives the pressure plate 6 to slide upward along the connecting rod 3. At the same time, the second spring 20 releases its elastic force to push the slide plate 15 upward. When the slide plate 15 contacts the limiting plate 17, it pushes the limiting plate 17 upward. At the same time, the lifting block 13 moves upward to push the workpiece out of the core groove 18, making it convenient for the staff to take it out.

[0029] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A heat exchanger fin punching device, comprising a workbench (1), a base plate (2) fixedly connected to the upper surface of the workbench (1), a plurality of symmetrical connecting rods (3) fixedly connected to the upper surface of the base plate (2), an upper mold (4) fixedly connected to the top of the plurality of connecting rods (3), a hydraulic cylinder (7) fixedly connected to the upper surface of the upper mold (4), and a pressure plate (6) fixedly connected to one end of the hydraulic cylinder (7) through the lower surface of the upper mold (4), characterized in that: The lower surface of the pressure plate (6) is detachably connected to the mold core (10) by bolts. The upper surface of the base plate (2) is detachably connected to the lower mold (5) by bolts. The upper surface of the lower mold (5) is provided with a core groove (18) that matches the shape of the mold core (10). A square groove (12) is provided on the bottom inner wall of the core groove (18). A lifting block (13) is slidably connected in the square groove (12). The lower mold (5) has two through-holes (14) inside, and the two through-holes (14) are symmetrically distributed. The through-holes (14) are connected to the square groove (12). A sliding plate (15) is slidably connected in the through-holes (14). Both ends of the sliding plate (15) extend to the outside of the through-holes (14). A plurality of symmetrical second springs (20) are fixedly connected to the lower surface of the sliding plate (15). A plurality of fixing blocks (11) corresponding to the extension of the plurality of sliding plates (15) are fixedly connected to the lower surface of the pressure plate (6).

2. The heat exchanger fin stamping equipment according to claim 1, characterized in that: A limiting groove (16) is provided on the inner wall of the square groove (12), and a limiting plate (17) is fixedly connected to the bottom of the lifting block (13), and the limiting plate (17) slides in the limiting groove (16).

3. The heat exchanger fin stamping equipment according to claim 1, characterized in that: The upper mold (4) has two sliding holes, which are symmetrically located on both sides of the hydraulic cylinder (7). Each sliding hole is slidably connected to a sliding rod (8), and the bottom ends of the two sliding rods (8) are fixed to the upper surface of the pressure plate (6). The top ends of the two sliding rods (8) are fixedly connected to a circular plate, and the lower surface of the circular plate is fixedly connected to a first spring (9). The other end of the first spring (9) is fixed to the upper surface of the upper mold (4).

4. The heat exchanger fin stamping equipment according to claim 1, characterized in that: Multiple guide rods (19) are fixedly connected between the top inner wall and the bottom inner wall of the recess (14), and the multiple guide rods (19) pass through the slide plate (15) and are slidably connected to it.

5. The heat exchanger fin stamping equipment according to claim 3, characterized in that: The pressure plate (6) has through holes at its four corners, and multiple through holes are equipped with sliding sleeves. Multiple connecting rods (3) pass through the corresponding sliding sleeves and are slidably connected to them.

6. The heat exchanger fin stamping equipment according to claim 4, characterized in that: The upper surface of the slide plate (15) is in contact with the lower surface of the limiting plate (17), and the height of the clearance opening (14) is greater than the depth of the limiting groove (16).

7. The heat exchanger fin stamping equipment according to claim 1, characterized in that: The workbench (1) is fixedly connected to four corners at the bottom of each support leg, and a fixing plate is fixedly connected to the bottom of each support leg. The fixing plate has mounting holes at each corner.

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