A process for producing parallel flow fins
Patent Information
- Application Number
- CN202611375322.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-07
- Publication Date
- 2026-10-16
AI Technical Summary
[0004]本发明的目的在于提供一种平行流翅片的生产工艺，以解决现有翅片生产工艺复杂、生产效率低下、翅片成型质量差、良品率低的问题
[0015] The beneficial effects of this invention are as follows: The production process of the parallel flow fin involves a single tearing, punching corrugations, bosses, stamping ribs, punching and flanging, irregular cutting, 45-degree bending, 90-degree bending, punching louvers, a second tearing, a first bending, a second bending, a third bending, shaping, longitudinal cutting, edge cutting, center cutting, and transverse cutting. This process is not only simple and efficient, but also greatly improves the forming quality of the parallel flow fin. In addition, the tearing and bending die structure of the parallel flow fin is improved by adding a pressure rib bending sub-die, which stamps transverse reinforcing ribs on the strip after tearing and forming, thereby improving the overall strength. Furthermore, by setting a first bending sub-die and a second bending sub-die in conjunction with the pressure rib bending sub-die, bending is performed by one end bending and two root bending, which greatly improves the yield rate of bending and forming. The structure is simple and easy to implement.
Smart Images
Figure CN122913375A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of air conditioner fin technology, and in particular to a manufacturing process for parallel flow fins. Background Technology
[0002] Parallel flow fins are the core component of microchannel parallel flow heat exchangers, typically composed of porous flat tubes and corrugated louvered fins. They are widely used in thermal management of new energy vehicles, temperature control of energy storage power stations, and high-end HVAC systems. Their design aims to rationally utilize the effective volume through a variable flow structure (with partitions within the manifolds and a gradually decreasing number of tubes), significantly improving heat exchange capacity and energy efficiency ratio.
[0003] Currently, the production process of parallel flow fins is complex and inefficient. In addition, the fins produced using existing processes have poor forming quality, especially during the tearing and bending process. For some thinner fins, bending damage is very likely to occur, resulting in a low overall yield. Therefore, there is an urgent need to solve this problem. Summary of the Invention
[0004] The purpose of this invention is to provide a parallel flow fin manufacturing process to solve the problems of complex manufacturing processes, low production efficiency, poor fin forming quality, and low yield in existing fin manufacturing processes.
[0005] The objective of this invention is achieved through the following technical solution: A manufacturing process for parallel flow fins involves feeding a strip of material with a strip structure into a stamping die via a feeding device in a stepping manner for continuous punching, sequentially performing the following steps: a) Single tear: Tear the material while it is in the strip; b. Stamping corrugations and bosses: Stamping corrugation groups and boss groups on the strip material, wherein the corrugation group includes symmetrically arranged upper corrugations and lower corrugations, and the boss group includes multiple bosses located between the upper corrugations and lower corrugations. c. Stamping ribs: Stamping ribs are stamped out on the outer periphery of the boss assembly; d. Punching and flanging: punching guide holes and flanging on the strip; e. Irregular cutting: punching irregular holes between adjacent reinforcing ribs; f. 45-degree bend: Bend the outer edge of the irregular hole at a 45-degree angle; g. 90-degree bend: Bend the outer edge of the irregular hole to 90 degrees; h. Punching louvers: Punching louvers into the ribs; i. Secondary tear: Tear openings are made on both sides of the louver inside the rib; j. One bend: Bend the part after the tear once; k. Secondary bending: The part after the tear is bent a second time; 1. Three-fold bending: The part after tearing is bent three times; m. Shaping: Performing stamping shaping; n. Longitudinal cutting: longitudinal cutting of the material strip; o. Edge cutting and center cutting: Cut the material strip at the edges and center; p. Cross-cut: To cut the strip cross-cut.
[0006] As a preferred embodiment of the present invention, steps i, j, k, and l are implemented by a tearing and bending die structure for parallel flow fins.
[0007] As a preferred embodiment of the present invention, the tearing and bending die structure of the parallel flow fin includes an upper die base and a lower die base, characterized in that: a tearing sub-die, a rib bending sub-die, a first bending die, and a second bending die are sequentially arranged between the upper die base and the lower die base along the material feeding direction of the parallel flow fin. The tearing sub-die is used to complete the tearing operation on the material strip to form a tear section. The rib bending die is used to stamp out transverse reinforcing ribs on the tear section and realize the end bending of the tear section. The first bending sub-die is used to pre-bend the root of the tear section to 45 degrees, and the second bending die is used to bend the root of the tear section to 90 degrees.
[0008] In a preferred embodiment of the present invention, an upper pad is connected to the lower part of the upper mold base, an upper mold fixing plate is connected to the lower part of the upper pad, a lower pad is connected to the upper part of the lower mold base, and a lower mold fixing plate is connected to the upper part of the lower pad.
[0009] In a preferred embodiment of the present invention, the tearing die includes a tearing punch and a tearing die. The tearing punch is fixed on the lower die fixing plate, and the tearing die is fixed on the upper die fixing plate. The tearing punch includes a first tearing wedge and a first tearing straight portion. The height of the first tearing wedge decreases sequentially along the feeding direction of the strip. The tearing die includes a second tearing wedge that cooperates with the first tearing wedge and a second tearing straight portion that cooperates with the first tearing straight portion.
[0010] In a preferred embodiment of the present invention, the rib bending die includes a rib bending punch and a rib bending die. The rib bending punch is fixed to the upper part of the lower die fixing plate, and the rib bending die is fixed to the lower part of the upper die fixing plate. The rib bending punch includes an end bending top block and a rib protrusion. The rib bending die includes a rib notch that mates with the rib protrusion and an end bending pressure block that mates with the end bending top block.
[0011] As a preferred embodiment of the present invention, the first bending die includes a first bending die and a first bending die. The first bending die is fixed on the lower die fixing plate and is provided with a 45-degree pre-bending slope. The first bending die is fixed on the upper die fixing plate and is provided with a first bending pressure block that cooperates with the pre-bending slope.
[0012] In a preferred embodiment of the present invention, the second bending die includes a second bending die and a second bending punch. The second bending punch is fixed on a bending punch fixing plate, which is mounted on a lower die base. The second bending die is fixed on a bending die fixing plate, which is mounted on an upper die base. The second bending punch has a 90-degree bending forming surface, and the second bending die has a second bending pressure block.
[0013] In a preferred embodiment of the present invention, the bending punch fixing plate is mounted on the upper die base in a way that allows it to move up and down.
[0014] In a preferred embodiment of the present invention, an upper inclined wedge is connected to the bending punch fixing plate, a fixing plate is connected to the lower end of the upper die seat, an adjusting screw is threadedly connected to the fixing plate, the adjusting screw is arranged in a horizontal direction, and a lower inclined wedge that cooperates with the upper inclined wedge is connected to the end of the adjusting screw.
[0015] The beneficial effects of this invention are as follows: The production process of the parallel flow fin involves a single tearing, punching corrugations, bosses, stamping ribs, punching and flanging, irregular cutting, 45-degree bending, 90-degree bending, punching louvers, a second tearing, a first bending, a second bending, a third bending, shaping, longitudinal cutting, edge cutting, center cutting, and transverse cutting. This process is not only simple and efficient, but also greatly improves the forming quality of the parallel flow fin. In addition, the tearing and bending die structure of the parallel flow fin is improved by adding a pressure rib bending sub-die, which stamps transverse reinforcing ribs on the strip after tearing and forming, thereby improving the overall strength. Furthermore, by setting a first bending sub-die and a second bending sub-die in conjunction with the pressure rib bending sub-die, bending is performed by one end bending and two root bending, which greatly improves the yield rate of bending and forming. The structure is simple and easy to implement. Attached Figure Description
[0016] Figure 1 This is a process flow diagram of a parallel flow fin manufacturing process according to the present invention; Figure 2 This is a schematic diagram of the tear-bending die structure for parallel flow fins according to the present invention; Figure 3 This is a schematic diagram of the mating structure of the tearing punch and tearing die of the present invention; Figure 4This is a schematic diagram of the mating structure of the bending punch and the bending die. Figure 5 This is a schematic diagram of the mating structure of the first bending die and the first bending punch; Figure 6 This is a schematic diagram of the mating structure of the second bending die and the second bending punch.
[0017] In the picture: 1. Lower die base; 2. Upper die base; 3. Tear-out punch; 4. Tear-out die; 5. Rib bending punch; 6. Rib bending die; 7. First bending punch; 8. First bending die; 9. Second bending punch; 10. Second bending die; 11. Second tear-out wedge; 12. Second tear-out straight section; 13. First tear-out wedge; 14. First tear-out straight section; 15. End bending top block; 16. Rib protrusion; 17. Rib notch; 18. End bending pressure block; 19. Pre-bending slope; 20. First bending pressure block; 21. Bending forming surface; 22. Second bending pressure block. Detailed Implementation
[0018] Embodiments of the present invention 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 components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a mechanical connection, an electrical connection, or an indirect connection via an intermediate medium. They can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0020] In the description of 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 being 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 being 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. The technical solutions of this invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0021] Please see Figures 1 to 6 As shown, Figure 1 This is a process flow diagram of a parallel flow fin manufacturing process according to the present invention; Figure 2 This is a schematic diagram of the tear-bending die structure for parallel flow fins according to the present invention; Figure 3 This is a schematic diagram of the mating structure of the tearing punch and tearing die of the present invention; Figure 4 This is a schematic diagram of the mating structure of the bending punch and the bending die. Figure 5 This is a schematic diagram of the mating structure of the first bending die and the first bending punch; Figure 6 This is a schematic diagram of the mating structure of the second bending die and the second bending punch.
[0022] In this embodiment, a parallel flow fin manufacturing process involves feeding a strip of material with a strip structure into a stamping die via a feeding device in a stepping manner for continuous punching, sequentially performing the following steps: a) Single tear: Tear the material while it is in the strip; b. Stamping corrugations and bosses: Stamping corrugation groups and boss groups on the strip material, wherein the corrugation group includes symmetrically arranged upper corrugations and lower corrugations, and the boss group includes multiple bosses located between the upper corrugations and lower corrugations. c. Stamping ribs: Stamping ribs are stamped out on the outer periphery of the boss assembly; d. Punching and flanging: punching guide holes and flanging on the strip; e. Irregular cutting: punching irregular holes between adjacent reinforcing ribs; f. 45-degree bend: Bend the outer edge of the irregular hole at a 45-degree angle; g. 90-degree bend: Bend the outer edge of the irregular hole to 90 degrees; h. Punching louvers: Punching louvers into the ribs; i. Secondary tear: Tear openings are made on both sides of the louver inside the rib; j. One bend: Bend the part after the tear once; k. Secondary bending: The part after the tear is bent a second time; 1. Three-fold bending: The part after tearing is bent three times; m. Shaping: Performing stamping shaping; n. Longitudinal cutting: longitudinal cutting of the material strip; o. Edge cutting and center cutting: Cut the material strip at the edges and center; p. Cross-cutting: Cross-cutting the strip material; The above-mentioned production process, which involves a single tear, punching corrugations, bosses, stamping ribs, punching and flanging, irregular cutting, 45-degree bending, 90-degree bending, punching louvers, a second tear, a first bending, a second bending, a third bending, shaping, longitudinal cutting, edge cutting, center cutting, and transverse cutting, is not only simple and efficient, but also greatly improves the forming quality of the parallel flow fins.
[0023] Specifically, in this embodiment, steps i, j, k, and l are achieved through a tear-bending die structure for parallel flow fins.
[0024] A tearing and bending die structure for parallel flow fins includes an upper die base 2 and a lower die base 1. A tearing sub-die, a rib bending sub-die, a first bending die, and a second bending die are sequentially arranged between the upper die base 2 and the lower die base 1 along the material feeding direction of the parallel flow fin. The tearing sub-die is used to complete the tearing operation on the material strip to form a tear section. The rib bending die is used to stamp out transverse reinforcing ribs on the tear section and achieve end bending of the tear section. The first bending die is used to pre-bend the root of the tear section to 45 degrees, and the second bending die is used to bend the root of the tear section to 90 degrees.
[0025] Specifically, in this embodiment, the lower part of the upper mold base 2 is connected to an upper pad plate, the lower part of the upper pad plate is connected to an upper mold fixing plate, the upper part of the lower mold base 1 is connected to a lower pad plate, and the upper part of the lower pad plate is connected to a lower mold fixing plate.
[0026] Specifically, in this embodiment, the tearing die includes a tearing punch 3 and a tearing die 4. The tearing punch 3 is fixed on the lower die fixing plate, and the tearing die 4 is fixed on the upper die fixing plate. The tearing punch 3 includes a first tearing wedge portion 13 and a first tearing straight portion 14. The height of the first tearing wedge portion 13 decreases sequentially along the feeding direction of the strip. The tearing die 4 includes a second tearing wedge portion 11 that cooperates with the first tearing wedge portion 13 and a second tearing straight portion 12 that cooperates with the first tearing straight portion 14.
[0027] Specifically, in this embodiment, the rib bending die includes a rib bending punch 5 and a rib bending die 6. The rib bending punch 5 is fixed to the upper part of the lower die fixing plate, and the rib bending die 6 is fixed to the lower part of the upper die fixing plate. The rib bending punch 5 includes an end bending top block 15 and a rib protrusion 16. The rib bending die 6 includes a rib notch 17 that cooperates with the rib protrusion 16 and an end bending pressure block 18 that cooperates with the end bending top block 15.
[0028] Specifically, in this embodiment, the first bending die includes a first bending die 8 and a first bending die 7. The first bending die 7 is fixed on the lower die fixing plate, and a 45-degree pre-bending slope 19 is provided on the first bending die 7. The first bending die 8 is fixed on the upper die fixing plate, and a first bending pressure block 20 that cooperates with the pre-bending slope 19 is provided on the first bending die 8.
[0029] Specifically, in this embodiment, the second bending die includes a second bending die 10 and a second bending die 9. The second bending die 9 is fixed on a bending die fixing plate, which is mounted on the lower die base 1. The second bending die 10 is fixed on the bending die fixing plate, which is mounted on the upper die base 2. The second bending die 9 is provided with a 90-degree bending forming surface 21, and the second bending die 10 is provided with a second bending pressure block 22.
[0030] Specifically, in this embodiment, the bending punch fixing plate is mounted on the upper die base 2 in a way that allows it to move up and down. Furthermore, an upper inclined wedge is connected to the bending punch fixing plate, and a fixing plate is connected to the lower end of the upper die base 2. An adjusting screw is threaded onto the fixing plate. The adjusting screw is arranged in a horizontal direction, and the end of the adjusting screw is connected to a lower inclined wedge that cooperates with the upper inclined wedge.
[0031] Specifically, in this embodiment, the end of the adjusting screw is connected to a handle.
[0032] The above-mentioned parallel flow fin tearing and bending die structure improves the overall strength by adding a pressure rib bending sub-die and stamping transverse reinforcing ribs on the strip after tearing and forming. Furthermore, by setting a first bending sub-die and a second bending sub-die in conjunction with the pressure rib bending sub-die, bending and forming are performed by one end bending and two root bending, which greatly improves the yield of bending and forming. The structure is simple and easy to implement.
[0033] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims.
Claims
1. A manufacturing process for parallel flow fins, wherein a strip of material with a strip structure is fed into a stamping die in a stepping manner via a feeding device for continuous punching, characterized in that: The following steps are performed sequentially: a) Single tear: Tear the material while it is in the strip; b. Stamping corrugations and bosses: Stamping corrugation groups and boss groups on the strip material, wherein the corrugation group includes symmetrically arranged upper corrugations and lower corrugations, and the boss group includes multiple bosses located between the upper corrugations and lower corrugations. c. Stamping ribs: Stamping ribs are stamped out on the outer periphery of the boss assembly; d. Punching and flanging: punching guide holes and flanging on the strip; e. Irregular cutting: punching irregular holes between adjacent reinforcing ribs; f. 45-degree bend: Bend the outer edge of the irregular hole at a 45-degree angle; g. 90-degree bend: Bend the outer edge of the irregular hole to 90 degrees; h. Punching louvers: Punching louvers into the ribs; i. Secondary tear: Tear openings are made on both sides of the louver inside the rib; j. One bend: Bend the part after the tear once; k. Secondary bending: The part after the tear is bent a second time; 1. Three-fold bending: The part after tearing is bent three times; m. Shaping: Performing stamping shaping; n. Longitudinal cutting: longitudinal cutting of the material strip; o. Edge cutting and center cutting: Cut the material strip at the edges and center; p. Cross-cut: To cut the strip cross-cut.
2. The manufacturing process of parallel flow fins according to claim 1, characterized in that: Steps i, j, k, and l are achieved through a tearing and bending die structure for parallel flow fins.
3. The manufacturing process for parallel flow fins according to claim 2, characterized in that: The tearing and bending die structure of the parallel flow fin includes an upper die base and a lower die base. The upper die base and the lower die base are sequentially arranged along the material feeding direction of the parallel flow fin with a tearing sub-die, a rib bending sub-die, a first bending die, and a second bending die. The tearing sub-die is used to complete the tearing operation on the material strip to form a tear section. The rib bending sub-die is used to stamp out transverse reinforcing ribs on the tear section and achieve end bending of the tear section. The first bending sub-die is used to pre-bend the root of the tear section to 45 degrees, and the second bending die is used to bend the root of the tear section to 90 degrees.
4. The manufacturing process for parallel flow fins according to claim 3, characterized in that: The lower part of the upper mold base is connected to an upper pad plate, the lower part of the upper pad plate is connected to an upper mold fixing plate, the upper part of the lower mold base is connected to a lower pad plate, and the upper part of the lower pad plate is connected to a lower mold fixing plate.
5. The manufacturing process for parallel flow fins according to claim 4, characterized in that: The tearing die includes a tearing punch and a tearing die. The tearing punch is fixed on the lower die fixing plate, and the tearing die is fixed on the upper die fixing plate. The tearing punch includes a first tearing wedge and a first tearing straight portion. The height of the first tearing wedge decreases sequentially along the feeding direction of the strip. The tearing die includes a second tearing wedge that cooperates with the first tearing wedge and a second tearing straight portion that cooperates with the first tearing straight portion.
6. The manufacturing process for parallel flow fins according to claim 5, characterized in that: The rib bending die includes a rib bending punch and a rib bending die. The rib bending punch is fixed to the upper part of the lower die fixing plate, and the rib bending die is fixed to the lower part of the upper die fixing plate. The rib bending punch includes an end bending top block and a rib protrusion. The rib bending die includes a rib notch that mates with the rib protrusion and an end bending pressure block that mates with the end bending top block.
7. The manufacturing process for parallel flow fins according to claim 6, characterized in that: The first bending die includes a first bending die and a first bending punch. The first bending punch is fixed on the lower die fixing plate and has a 45-degree pre-bending slope. The first bending die is fixed on the upper die fixing plate and has a first bending pressure block that cooperates with the pre-bending slope.
8. The manufacturing process for parallel flow fins according to claim 3, characterized in that: The second bending die includes a second bending die and a second bending punch. The second bending punch is fixed on a bending punch fixing plate, which is mounted on a lower die base. The second bending die is fixed on a bending die fixing plate, which is mounted on an upper die base. The second bending punch has a 90-degree bending forming surface, and the second bending die has a second bending pressure block.
9. The manufacturing process for parallel flow fins according to claim 8, characterized in that: The bending punch fixing plate is mounted on the upper die base and can move up and down.
10. The manufacturing process of parallel flow fins according to claim 9, characterized in that: An upper inclined wedge is connected to the bending punch fixing plate, and a fixing plate is connected to the lower end of the upper die base. An adjusting screw is threadedly connected to the fixing plate. The adjusting screw is arranged in a horizontal direction, and a lower inclined wedge that cooperates with the upper inclined wedge is connected to the end of the adjusting screw.