Punching equipment for fins of heat exchanger

Abstract

The utility model discloses punching equipment for fins of a heat exchanger, which has the advantages that the fins cannot deviate during punching, the punching work is stable, and burrs are reduced. Comprising a bottom plate, a punching module capable of moving up and down relative to the bottom plate is arranged on the bottom plate, a guide assembly is arranged in front of the punching module, the punching module comprises an upper module and a lower module which are connected in a sliding mode, and a plurality of punching columns are fixedly installed on the upper module; the lower die block is provided with a guide hole corresponding to the punching column, a fin is connected between the bottom plate and the lower die block in an abutting mode, the bottom plate is provided with a discharging hole corresponding to the punching column, and a waste collecting bin is fixedly arranged below the discharging hole.

Description

Technical Field

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

[0002] Heat exchangers are essential components in refrigeration equipment, and their quality and performance are key factors affecting the cooling effect. Fins are a crucial part of heat exchangers, typically applied to the surface of heat exchange devices that require heat transfer. By adding highly thermally conductive metal sheets, the heat exchange surface area is increased. During production, fins generally undergo punching, stamping, and cutting, followed by material collection and straightening. However, existing punching dies often result in burrs at the punched areas, affecting the punching quality.

[0003] For example, Chinese patent CN216881304U discloses a fin punching die that can reduce punching burrs, including a base plate, a connecting plate, and a mounting groove. A control mechanism is installed on the top of the base plate, a drive mechanism is installed on the bottom front of the control mechanism, a fixing plate is installed at the output end of the drive mechanism, an upper die is installed on the bottom of the fixing plate by bolts, a connecting plate is installed on the bottom of the upper die, a positioning shaft is installed on the bottom of the connecting plate, a mounting groove is opened on the top of the base plate, a mounting bracket is installed on the top of the base plate, a mounting plate is installed on one side of the mounting bracket, a lower die body is installed on the top of the mounting bracket, a mounting component is installed on the top of the lower die body, a punching die body is installed on the top of the mounting component, and multiple positioning sleeves are installed through the top of the punching die body.

[0004] This utility model makes the punching rod more stable during punching by fitting the positioning shaft into the inside of the positioning sleeve, reducing the occurrence of offset and burrs.

[0005] However, the fin punching device cannot fix the fins during punching, and the fins are prone to displacement, which affects the punching quality. Furthermore, since the fins cannot be fixed, burrs will still be generated at the punching point, which also affects the punching quality. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide a heat exchanger fin punching device that prevents the fins from shifting during punching, ensures stable punching operation, and reduces burr generation.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is: a heat exchanger fin punching device, including a base plate, a punching module that can move up and down relative to the base plate, a guide component in front of the punching module, the punching module including an upper module and a lower module that can be slidably connected, a plurality of stamping columns fixedly installed on the upper module, a guide hole corresponding to the stamping columns opened on the lower module, fins abutting between the base plate and the lower module, a discharge hole corresponding to the stamping columns opened on the base plate, and a waste collection bin fixedly provided below the discharge hole.

[0008] Furthermore, the upper module is fixedly provided with connecting posts at the four corners of the side near the lower module, and the lower module is provided with connecting through holes corresponding to the connecting posts. The end of the connecting post away from the upper module is slidably disposed in the connecting through hole.

[0009] Furthermore, a sliding groove is provided on the side wall of the connecting through hole, and a slider corresponding to the sliding groove is fixedly installed on the connecting column.

[0010] Furthermore, a spring is fitted onto the connecting column, and the two ends of the spring are fixedly connected to the sides of the lower module and the upper module that are close to each other.

[0011] Furthermore, a guide sleeve connected to the guide hole is fixedly provided on the side of the lower module near the upper module at the guide hole, and a rubber pad is fixedly installed on the end of the guide sleeve near the upper module.

[0012] Furthermore, the inner diameters of the guide hole and the guide sleeve correspond to the outer diameter of the stamping column.

[0013] Furthermore, a mounting bracket is fixedly provided on the base plate, and a driving cylinder for driving the punching module to move up and down relative to the base plate is fixedly provided on the mounting bracket. The output end of the driving cylinder is fixedly connected to the side of the upper module away from the lower module.

[0014] Furthermore, a ring-shaped cutter is fixedly installed at the bottom end of the stamping column.

[0015] Furthermore, the guide assembly consists of two guide plates fixed on the base plate, which are arranged opposite to each other. Each guide plate includes a straight portion and an inclined portion. The straight portion is located on the side closer to the punching module and is parallel to the conveying direction of the fin. The straight portion abuts against the two side edges of the fin, and the inclined portion is located on the side of the straight portion away from the punching module.

[0016] Furthermore, the waste collection bin is connected to the discharge hole on the bottom plate, the waste collection bin has a discharge port, and a baffle for sealing or opening the discharge port is rotatably provided at the discharge port. A discharge plate is fixedly provided inside the waste collection bin, and the discharge plate is inclined.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] 1. During the stamping process, the guide assembly guides the fins, and the lower module presses the fins together, so that the fins will not shift during stamping and the generation of burrs is reduced;

[0019] 2. A ring cutter is fixedly installed at the bottom of the stamping column, which facilitates faster punching, reduces the pulling of the fins, and thus reduces burrs;

[0020] 3. The inner diameters of the guide hole and the guide sleeve correspond to the outer diameter of the stamping column, so that the stamping column will not shake or shift during punching, making the punching operation more stable and reducing the generation of burrs.

[0021] 4. The stamped waste material falls into the waste collection bin below through the material discharge hole on the bottom plate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the evaporator fin punching device of this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the evaporator fin punching device of this utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the evaporator fin punching device of this utility model. Figure 3 ;

[0025] Figure 4 for Figure 3 Enlarged view of part A in the image;

[0026] Figure 5 This is a schematic diagram of the upper module of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the lower module of this utility model;

[0028] Figure 7 for Figure 6 A sectional view;

[0029] Figure 8 This is a schematic diagram of the waste collection bin of this utility model.

[0030] Reference numerals: 1. Base plate; 2. Punching module; 3. Guide assembly; 4. Waste collection bin;

[0031] 11. Feeding hole; 12. Mounting bracket; 13. Drive cylinder;

[0032] 21. Upper module; 22. Lower module; 23. Stamping column; 24. Guide hole; 25. Annular cutter;

[0033] 26. Connecting post; 27. Spring; 28. Guide sleeve; 29. ​​Rubber pad;

[0034] 221. Connecting through hole; 222. Sliding groove; 223. Limiting block; 261. Sliding block;

[0035] 31. Straight part; 32. Inclined part;

[0036] 41. Discharge port; 42. Baffle; 43. Hook; 44. Snap ring; 45. Feed plate. Detailed Implementation

[0037] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0038] like Figure 1-8 As shown, in this embodiment, a heat exchanger fin punching device is provided, including a base plate 1, a punching module 2 that can move up and down relative to the base plate 1, a guide component 3 in front of the punching module 2, a discharge hole 11 on the base plate 1, and a waste collection bin 4 fixedly provided below the discharge hole 11.

[0039] like Figure 1-7 As shown, in this embodiment, the punching module 2 includes an upper module 21 and a lower module 22 that can be slidably connected. A plurality of punching columns 23 are fixedly installed on the upper module 21. The lower module 22 has guide holes 24 corresponding to the punching columns 23. The punching columns 23 can pass through the guide holes 24 on the lower module 22 and can move up and down within the guide holes 24. During operation, the fins abut against the base plate 1 and the lower module 22.

[0040] like Figure 1-7 As shown, in this embodiment, connecting posts 26 are fixedly provided at the four corners of the upper module 21 near the lower module 22. The lower module 22 has connecting through holes 221 corresponding to the connecting posts 26. The end of the connecting post 26 away from the upper module 21 is slidably disposed in the connecting through hole 221, so that the upper module 21 can slide relative to the lower module 22. Specifically, a sliding groove 222 is provided on the side wall of the connecting through hole 221, and a slider 261 corresponding to the sliding groove 222 is fixedly installed on the connecting post 26, so that the connecting post 26 can slide in the connecting through hole 221.

[0041] like Figure 1-7 As shown, in this embodiment, a spring 27 is sleeved on the connecting column 26. The two ends of the spring 27 are fixedly connected to the sides of the lower module 22 and the upper module 21 that are close to each other. A guide sleeve 28 that communicates with the guide hole 24 is fixedly installed on the side of the lower module 22 that is close to the upper module 21. A rubber pad 29 is fixedly installed on the end of the guide sleeve 28 that is close to the upper module 21. By setting the spring 27 and the rubber pad 29, the impact force when the upper module 21 approaches the lower module 22 can be buffered, avoiding damage caused by the collision between the upper module 21 and the lower module 22. At the same time, the guide sleeve 28 can improve the stability of the stamping column 23 sliding up and down in the guide hole 24. Setting the guide sleeve 28 can also leave a certain amount of compression for the spring 27, avoiding damage to the spring 27.

[0042] like Figure 1-7 As shown, in this embodiment, a limiting block 223 is fixedly provided on one side of the sliding groove 222 near the upper surface of the lower module 22, so that the connecting post 26 will not detach from the connecting through hole 221 when sliding in the connecting through hole 221, and also avoids the spring 27 being excessively stretched due to the weight of the lower module 22. During assembly, the end of the connecting post 26 without the slider 261 is inserted into the connecting through hole 221 from below, and the slider 261 cooperates with the sliding groove 222. When the end of the connecting post 26 without the slider 261 extends above the connecting through hole 221, the spring 27 is sleeved on the connecting post 26. Then, the end of the connecting post 26 without the slider 261 is fixedly connected to the upper module 21, and the two ends of the spring 27 are fixed on the upper module 21 and the lower module 22. Specifically, the connecting post 26 and the spring 27 can be installed and fixed by welding.

[0043] like Figure 1-7 As shown, in this embodiment, the inner diameters of the guide hole 24 and the guide sleeve 28 correspond to the outer diameter of the stamping column 23, so that the stamping column 23 will not shake or shift during punching, making the punching operation more stable and reducing the generation of burrs.

[0044] like Figure 5 As shown, in this embodiment, an annular cutter 25 is fixedly installed at the bottom end of the stamping column 23 to facilitate faster punching.

[0045] like Figure 1-7As shown, in this embodiment, a mounting bracket 12 is fixedly provided on the base plate 1. A driving cylinder 13 for driving the punching module 2 to move up and down relative to the base plate 1 is fixedly provided on the mounting bracket 12. The output end of the driving cylinder 13 is fixedly connected to the side of the upper module 21 away from the lower module 22. The fins are placed below the punching module 2. The driving cylinder 13 drives the punching module 2 to move closer to the base plate 1 until the lower module 22 abuts against the fins. The lower module 22 presses the fins together. The driving cylinder 13 continues to drive the upper module 21 to move downward, so that the annular cutter 25 on the stamping column 23 contacts the fins and completes the punching. The stamped waste falls into the waste collection bin 4 below through the discharge hole 11 on the base plate 1.

[0046] like Figure 1-3 As shown, in this embodiment, the guide assembly 3 consists of two guide plates fixed on the base plate 1. The two guide plates are arranged opposite to each other. Each guide plate includes a straight portion 31 and an inclined portion 32. The straight portion 31 is located on the side closer to the punching module 2. The straight portion 31 is parallel to the conveying direction of the fins and abuts against the two side edges of the fins. The inclined portion 32 is located on the side of the straight portion 31 away from the punching module 2, so that the side of the two guide assemblies 3 away from the punching module 2 forms an outwardly open trumpet shape, so that the fins can enter between the two guide assemblies 3 to guide the fins.

[0047] like Figure 1-4 As shown in Figure 8, in this embodiment, the discharge hole 11 on the bottom plate 1 corresponds to the stamping column 23 on the upper module 21. The waste collection bin 4 is connected to the discharge hole 11 on the bottom plate 1. The waste collection bin 4 has an opening on one side, which is a discharge port 41. A baffle 42 for sealing or opening the discharge port 41 is rotatably provided at the discharge port 41. A discharge plate 45 is fixedly provided inside the waste collection bin 4. The discharge plate 45 is inclined and tilted upward from one side of the discharge port 41 to the other side. The discharge plate 45 can facilitate the discharge of waste material that falls from the punch in the waste collection bin 4 from the discharge port 41.

[0048] Specifically, such as Figure 1-4 As shown in Figure 8, the discharge port 41 of the waste collection bin 4 is flush with the edge of the bottom plate 1. The upper end of the baffle 42 is rotatably mounted on the bottom plate 1, and the lower end of the baffle 42 is provided with a rotatable hook 43. The bottom of the waste collection bin 4 is fixedly provided with a retaining ring 44 corresponding to the hook 43. By rotating the hook 43, the hook 43 is engaged in the retaining ring 44, which can seal the discharge port 41 of the baffle 42. When the waste in the waste collection bin 4 needs to be cleaned, the hook 43 is rotated to disengage from the retaining ring 44, and the baffle 42 is rotated upward to open the discharge port 41. The waste that falls through the punch in the waste collection bin 4 is discharged from the discharge port 41.

[0049] In this embodiment, the front and rear sides of the base plate 1 should also be connected to a conveying device (not shown in the figure) to facilitate the conveying and stamping of the fins.

[0050] The working process and principle of this utility model are as follows: The fins to be processed are conveyed to the base plate 1 through a conveying device. The fins enter between two guide components 3. The straight part 31 on the guide component 3 abuts against the two side edges of the fin, thereby guiding the fins. When the fins reach the bottom of the punching module 2, the drive cylinder 13 drives the punching module 2 to move closer to the base plate 1 until the lower module 22 abuts against the fins. The lower module 22 presses the fins together. The drive cylinder 13 continues to drive the upper module 21 to move downward, so that the annular cutter 25 on the stamping column 23 contacts the fins and completes the punching. The stamped waste falls into the waste collection bin 4 below through the discharge hole 11 on the base plate 1. During this process, the spring 27 and the rubber pad 29 can buffer the impact force when the upper module 21 approaches the lower module 22, avoiding damage caused by the upper module 21 and the lower module 22 colliding with each other. At the same time, the guide sleeve 28 can improve the stability of the stamping column 23 sliding up and down in the guide hole 24. The guide sleeve 28 also allows for a certain amount of compression for the spring 27, preventing damage to the spring 27. During the stamping process, the guide assembly 3 guides the fins, and the lower module 22 presses the fins together, preventing fin misalignment during stamping and reducing burr generation. Furthermore, the bottom end of the stamping column 23 is fixedly equipped with an annular cutter 25, facilitating faster punching and reducing pulling on the fins, thus reducing burrs. Simultaneously, the inner diameters of the guide hole 24 and the guide sleeve 28 are both within the range of the stamping column. The outer diameter of 23 corresponds to the stamping column 23, so that the stamping column 23 will not shake or deviate during punching, making the punching operation more stable and reducing the generation of burrs. The stamped waste material falls into the waste collection bin 4 below through the discharge hole 11 on the bottom plate 1. When the waste material in the waste collection bin 4 needs to be cleaned, rotate the hook 43 to disengage it from the retaining ring 44, rotate the baffle 42 upward to open the discharge port 41, and the waste material that fell from the punching in the waste collection bin 4 is discharged from the discharge port 41.

[0051] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat exchanger fin punching device, characterized in that: The device includes a base plate (1), on which a punching module (2) is provided that can move up and down relative to the base plate (1). A guide component (3) is provided in front of the punching module (2). The punching module (2) includes an upper module (21) and a lower module (22) that can be slidably connected. Multiple stamping columns (23) are fixedly installed on the upper module (21). A guide hole (24) corresponding to the stamping column (23) is opened on the lower module (22). A fin abuts between the base plate (1) and the lower module (22). A discharge hole (11) corresponding to the stamping column (23) is opened on the base plate (1). A waste collection bin (4) is fixedly provided below the discharge hole (11).

2. The heat exchanger fin punching equipment according to claim 1, characterized in that: Connecting posts (26) are fixedly provided at the four corners of the upper module (21) near the lower module (22). The lower module (22) has a connecting through hole (221) corresponding to the connecting post (26). The end of the connecting post (26) away from the upper module (21) is slidably disposed in the connecting through hole (221).

3. The heat exchanger fin punching equipment according to claim 2, characterized in that: A sliding groove (222) is provided on the side wall of the connecting through hole (221), and a slider (261) corresponding to the sliding groove (222) is fixedly installed on the connecting column (26).

4. The heat exchanger fin punching equipment according to claim 2, characterized in that: A spring (27) is fitted on the connecting column (26), and the two ends of the spring (27) are fixedly connected to the lower module (22) and the upper module (21) respectively on the side close to each other.

5. The heat exchanger fin punching equipment according to claim 1, characterized in that: On the lower module (22), a guide sleeve (28) is fixedly provided at the guide hole (24) on the side near the upper module (21), and a rubber pad (29) is fixedly installed at the end of the guide sleeve (28) near the upper module (21).

6. The heat exchanger fin punching equipment according to claim 5, characterized in that: The inner diameters of the guide hole (24) and the guide sleeve (28) correspond to the outer diameter of the stamping column (23).

7. The heat exchanger fin punching equipment according to claim 1, characterized in that: A mounting bracket (12) is fixedly provided on the base plate (1). A driving cylinder (13) for driving the punching module (2) to move up and down relative to the base plate (1) is fixedly provided on the mounting bracket (12). The output end of the driving cylinder (13) is fixedly connected to the side of the upper module (21) away from the lower module (22).

8. The heat exchanger fin punching equipment according to claim 1, characterized in that: A ring cutter (25) is fixedly installed at the bottom end of the stamping column (23).

9. The heat exchanger fin punching equipment according to claim 1, characterized in that: The guide assembly (3) consists of two guide plates fixed on the base plate (1). The two guide plates are arranged opposite to each other. Each guide plate includes a straight portion (31) and an inclined portion (32). The straight portion (31) is located on the side closer to the punching module (2). The straight portion (31) is parallel to the conveying direction of the fin. The straight portion (31) abuts against the two side edges of the fin. The inclined portion (32) is located on the side of the straight portion (31) away from the punching module (2).

10. The heat exchanger fin punching equipment according to claim 1, characterized in that: The waste collection bin (4) is connected to the discharge hole (11) on the bottom plate (1). The waste collection bin (4) has a discharge port (41). A baffle (42) for sealing or opening the discharge port (41) is rotatably provided at the discharge port (41). A discharge plate (45) is fixedly provided inside the waste collection bin (4). The discharge plate (45) is inclined.

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