Fin stamping equipment with replaceable die core

Abstract

The utility model relates to the technical field of heat exchanger fin stamping dies, and discloses a fin stamping device with a replaceable die core, which comprises a lower die, a plurality of hydraulic cylinders are fixedly connected to the lower die, an upper die is fixedly connected to the top ends of the plurality of hydraulic cylinders, two groups of symmetrical telescopic rods are arranged between the upper die and the lower die, and the upper die is fixedly connected with the lower die. The upper surface of the lower mold is detachably connected with a mold plate through bolts, a core groove is formed in the upper surface of the mold plate, a mold core body is slidably connected into the core groove, and positioning grooves are formed in the four corners of the interior of the bottom of the core groove. According to the utility model, only the mold core body can be replaced, the whole mold does not need to be replaced, the replacement time is saved, the two Z-shaped rods can be moved at the same time, the time for moving the plurality of Z-shaped rods is saved, and the mold core body can be bounced for a certain distance when the mold core body is taken out.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger fin stamping die technology, and more specifically to a fin stamping equipment with replaceable die core. Background Technology

[0002] Finned heat exchangers are the most widely used type of heat exchange equipment in gas-liquid heat exchangers. Heat is transferred to the air passing between the fins through fins tightly wrapped around a steel tube, achieving the function of heating and cooling the air. The fins need to be stamped into shape using a mold during the fin processing before they can be used.

[0003] A search revealed Chinese patent CN220679084U, which discloses a stamping die. This device clamps and fixes the material using a clamping device, and then stamps it using a stamping device. At the same time, the stamping box can block debris, thereby greatly enhancing safety. Since the workpieces to be processed are different, the corresponding die core body needs to be selected before stamping. However, the die core body of this device is integrated with the die, and the entire die needs to be replaced when changing it, which takes a long time and involves a large amount of work. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fin stamping equipment with replaceable mold cores to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a fin stamping device with replaceable mold core, including a lower mold, a plurality of hydraulic cylinders fixedly connected to the lower mold, an upper mold fixedly connected to the top of the plurality of hydraulic cylinders, two sets of symmetrical telescopic rods between the upper mold and the lower mold, each set consisting of two rods, a template detachably connected to the upper surface of the lower mold by bolts, a core groove opened on the upper surface of the template, a mold core body slidably connected in the core groove, positioning grooves opened at the four corners of the bottom of the core groove, positioning blocks fixedly connected at the four corners of the bottom of the mold core body, a plurality of positioning blocks embedded in the corresponding positioning grooves, a slot opened on one side of each of the positioning blocks, two symmetrical Z-shaped grooves opened on both sides of the template, a sliding groove opened on one side of the inner wall of the Z-shaped groove, and the sliding groove communicating with the positioning groove, a locking block slidably connected in the sliding groove, and one end of the locking block embedded in the locking groove, a Z-shaped rod slidably connected in each Z-shaped groove, and one end of the Z-shaped rod fixed to the locking block.

[0006] To facilitate simultaneous movement of the two Z-shaped rods, one end of each Z-shaped rod extends out into an opening on one side of the Z-shaped groove. A threaded rod is fixedly connected to one side of the extended end of the Z-shaped rod. The threads on the two threaded rods on the same side are mirror images. A bidirectional threaded sleeve is threadedly connected between the two threaded rods on the same side, and the threads at both ends of the bidirectional threaded sleeve are consistent with the threads on the corresponding threaded rods.

[0007] To facilitate the removal of the mold core body from the core groove, multiple circular grooves are provided on the bottom inner wall of the core groove, and the multiple circular grooves are distributed in a square array. A cylinder is slidably connected in the circular groove, and the cylinder is closed at the top and open at the bottom. A spring is fixedly connected to the top inner wall of the cylinder, and the other end of the spring is fixed to the bottom inner wall of the circular groove.

[0008] Furthermore, a limiting groove is formed on the inner circumference of the circular groove, and the height of the limiting groove is lower than the height of the circular groove. A limiting ring is fixedly connected to the bottom end of the outer circumference of the cylinder, and the limiting ring slides in the limiting groove.

[0009] Furthermore, multiple guide rods are fixedly connected between the inner walls of the two sides of the Z-shaped groove, and all the guide rods pass through the Z-shaped rod and are slidably connected to it.

[0010] As a further embodiment of this invention, the depth of the core groove is the same as the thickness of the mold core body, and the external size of the mold core body is the same as that of the core groove.

[0011] As a further embodiment of this utility model, the outer circumferential wall of the bidirectional threaded sleeve is provided with anti-slip texture.

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

[0013] 1. By making the core groove and the mold core body detachable, this utility model allows for the replacement of only the mold core body when different shapes of heat exchanger fins need to be processed, without replacing the entire mold, thus saving replacement time and greatly improving the working efficiency of the device.

[0014] 2. This utility model can move two Z-shaped rods simultaneously by means of a threaded rod and a bidirectional threaded sleeve, saving the time of moving multiple Z-shaped rods. After moving, the position of the Z-shaped rods can be fixed to prevent them from sliding on their own and causing the locking block to disengage from the locking slot, which would cause the mold core body to vibrate during the processing, resulting in defects in the workpiece and requiring rework.

[0015] 3. This utility model, with its spring and circular groove, can lift the mold core body by one end when removing it, preventing the mold core body from being difficult to remove due to close contact with the inner wall of the core groove. The structure is simple. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the template of this utility model.

[0018] Figure 3 This is a partial cross-sectional view of the present invention.

[0019] Figure 4 This is an enlarged structural diagram of part A of this utility model.

[0020] Figure 5 This is an enlarged structural diagram of part B of this utility model.

[0021] The attached diagram is labeled as follows: 1. Lower mold; 2. Template; 3. Telescopic rod; 4. Hydraulic cylinder; 5. Upper mold; 6. Core groove; 7. Mold core body; 8. Bidirectional threaded sleeve; 9. Threaded rod; 10. Positioning block; 11. Slot; 12. Positioning groove; 13. Circular groove; 14. Cylinder; 15. Slide groove; 16. Locking block; 17. Z-shaped groove; 18. Z-shaped rod; 19. Guide rod; 20. Limiting groove; 21. Limiting ring; 22. 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 1-5This utility model provides a fin stamping device with replaceable mold cores, including a lower mold 1. Multiple hydraulic cylinders 4 are bolted to the lower mold 1, and an upper mold 5 is bolted to the top of each hydraulic cylinder 4. Two sets of symmetrical telescopic rods 3, each set consisting of two rods, are provided between the upper mold 5 and the lower mold 1. A template 2 is detachably bolted to the upper surface of the lower mold 1. A core groove 6 is formed on the upper surface of the template 2, and a mold core body 7 is slidably connected within the core groove 6. Positioning grooves 12 are formed at the four corners of the bottom of the core groove 6, and positioning blocks 10 are bolted to the four corners of the bottom of the mold core body 7. Multiple positioning blocks 10 are embedded in the corresponding positioning grooves 12. Each of the multiple positioning blocks 10 has a slot 11 on one side, and two symmetrical Z-shaped grooves 17 are opened on both sides of the template 2. A sliding groove 15 is opened on one inner wall of the Z-shaped groove 17, and the sliding groove 15 is connected to the positioning groove 12. A locking block 16 is slidably connected in the sliding groove 15, and one end of the locking block 16 is embedded in the slot 11. A Z-shaped rod 18 is slidably connected in each of the Z-shaped grooves 17, and one end of the Z-shaped rod 18 is fixed to the locking block 16. By making the core groove 6 and the mold core body 7 detachable, it is convenient to replace the mold core body 7 when it is necessary to process heat exchanger fins of different shapes, without having to replace the entire mold, saving replacement time and greatly improving the working efficiency of the device.

[0024] One end of each Z-shaped rod 18 extends out of the Z-shaped groove 17. A threaded rod 9 is bolted to one side of the extended end of each Z-shaped rod 18. The threads on the two threaded rods 9 on the same side are mirror images of each other. A bidirectional threaded sleeve 8 is threaded between the two threaded rods 9 on the same side, and the threads at both ends of the bidirectional threaded sleeve 8 are identical to the threads on the corresponding threaded rods 9. The threaded rods 9 and bidirectional threaded sleeves 8 allow for simultaneous movement of two Z-shaped rods 18, saving time compared to moving multiple Z-shaped rods 18. Furthermore, the position of the Z-shaped rods 18 can be fixed after movement to prevent them from self-destructing. The sliding motion causes the locking block 16 to disengage from the locking slot 11, resulting in vibration of the mold core body 7 during processing. This leads to defects in the workpiece and requires rework. The bottom inner wall of the core groove 6 has multiple circular grooves 13 arranged in a square array. A cylinder 14 is slidably connected within each groove 13, with a closed top and an open bottom. A spring 22 is welded to the top inner wall of the cylinder 14, and the other end of the spring 22 is fixed to the bottom inner wall of the circular groove 13. Through the spring 22 and the circular grooves 13, the mold core body 7 can be lifted one end away when it is removed. To prevent difficulty in removing the mold core body 7 due to tight contact with the inner wall of the core groove 6, the structure is simple. A limiting groove 20 is provided on the inner circumference of the circular groove 13, and the height of the limiting groove 20 is lower than the height of the circular groove 13. A limiting ring 21 is welded to the bottom end of the outer circumference of the cylinder 14, and the limiting ring 21 slides in the limiting groove 20. Through the provided limiting groove 20 and limiting ring 21, the distance of the cylinder 14's bounce can be limited, preventing the cylinder 14 from detaching from the circular groove 13 due to a high bounce height. Multiple guide rods 19 are welded between the inner walls of the two sides of the Z-shaped groove 17, and all the guide rods 19 pass through the Z-shaped groove 17. The rod 18 is slidably connected to it. The guide rod 19 can guide the Z-shaped rod 18 when it slides, increasing the stability of the sliding of the Z-shaped rod 18. The depth of the core groove 6 is the same as the thickness of the mold core body 7, and the outer size of the mold core body 7 is the same as the core groove 6. By setting the depth of the core groove 6 and the thickness of the mold core body 7 to be consistent, the phenomenon of damage to the mold core body 7 or defects in the processing can be prevented. The outer circumference of the bidirectional threaded sleeve 8 is provided with anti-slip texture. The anti-slip texture can increase the friction of the surface of the bidirectional threaded sleeve 8, making it convenient for the operator to operate.

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

[0026] S1: Before replacing the mold core body 7, first start the hydraulic cylinder 4 to extend and increase the distance between the upper mold 5 and the lower mold 1, increasing the operable space. When replacing, first rotate the two-way threaded sleeves 8 on both sides. When the two-way threaded sleeves 8 move, they drive the two threaded rods 9 to extend. At the same time, they drive the two Z-shaped rods 18 on the same side to slide along the Z-shaped groove 17, thereby driving the locking block 16 fixed at one end of the Z-shaped rod 18 to move along the slide groove 15 until one end of all the locking blocks 16 is completely disengaged from the corresponding locking groove 11.

[0027] S2: When one end of all the locking blocks 16 is completely disengaged from the corresponding locking slot 11, the spring 22 releases its elastic force to lift the cylinder 14 upward along the circular groove 13, and lifts the mold core body 7 upward along the core groove 6 by one end, making it easier to remove.

[0028] 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.

[0029] 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 fin stamping device with replaceable die core, comprising a lower die (1), wherein a plurality of hydraulic cylinders (4) are fixedly connected to the lower die (1), and an upper die (5) is fixedly connected to the top of the plurality of hydraulic cylinders (4), wherein two sets of telescopic rods (3) are provided symmetrically between the upper die (5) and the lower die (1), and each set consists of two rods, wherein a template (2) is detachably connected to the upper surface of the lower die (1) by bolts, characterized in that: The upper surface of the template (2) is provided with a core groove (6), and a core body (7) is slidably connected in the core groove (6). A positioning groove (12) is provided at each of the four corners of the bottom of the core groove (6). A positioning block (10) is fixedly connected at each of the four corners of the bottom of the core body (7). Multiple positioning blocks (10) are embedded in the corresponding positioning grooves (12). A slot (11) is provided on one side of each of the multiple positioning blocks (10). Two symmetrical Z-shaped grooves (17) are provided on both sides of the template (2). A sliding groove (15) is provided on one side of the inner wall of the Z-shaped groove (17), and the sliding groove (15) is connected to the positioning groove (12). A locking block (16) is slidably connected in the sliding groove (15), and one end of the locking block (16) is embedded in the slot (11). A Z-shaped rod (18) is slidably connected in the Z-shaped groove (17), and one end of the Z-shaped rod (18) is fixed to the locking block (16).

2. The fin stamping equipment with replaceable die core according to claim 1, characterized in that: One end of each Z-shaped rod (18) extends out of the Z-shaped groove (17) and one side of the extended end of the Z-shaped rod (18) is fixedly connected to a threaded rod (9). The threads on the two threaded rods (9) on the same side are mirrored. A bidirectional threaded sleeve (8) is threaded between the two threaded rods (9) on the same side, and the threads at both ends of the bidirectional threaded sleeve (8) are consistent with the threads on the corresponding threaded rods (9).

3. The fin stamping equipment with replaceable die core according to claim 1, characterized in that: The bottom inner wall of the core groove (6) is provided with multiple circular grooves (13), and the multiple circular grooves (13) are arranged in a square array. A cylinder (14) is slidably connected in the circular groove (13), and the cylinder (14) is closed at the top and open at the bottom. A spring (22) is fixedly connected to the top inner wall of the cylinder (14), and the other end of the spring (22) is fixed to the bottom inner wall of the circular groove (13).

4. The fin stamping equipment with replaceable die core according to claim 3, characterized in that: A limiting groove (20) is provided on the inner circumference of the circular groove (13), and the height of the limiting groove (20) is lower than the height of the circular groove (13). A limiting ring (21) is fixedly connected to the bottom end of the outer circumference of the cylinder (14), and the limiting ring (21) slides in the limiting groove (20).

5. The fin stamping equipment with replaceable die core according to claim 1, characterized in that: Multiple guide rods (19) are fixedly connected between the inner walls of the two sides of the Z-shaped groove (17), and the multiple guide rods (19) pass through the Z-shaped rod (18) and are slidably connected to it.

6. The fin stamping equipment with replaceable die core according to claim 3, characterized in that: The depth of the core groove (6) is the same as the thickness of the core body (7), and the size of the core body (7) is the same as that of the core groove (6).

7. The fin stamping equipment with replaceable die core according to claim 2, characterized in that: The outer circumferential wall of the bidirectional threaded sleeve (8) is provided with anti-slip texture.

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