Microchannel fin layout structure

Abstract

The utility model relates to the technical field of fin forming, in particular to a micro-channel fin layout structure which comprises a material belt and a material belt used for producing micro-channel fins, the material belt comprises a plurality of rows of material sheets, the N rows of material sheets are connected side by side to form material sheet sets, an isolation belt is arranged between every two adjacent material sheet sets, and the isolation belt is connected with the material belt. The isolation belt is provided with a process hole set used for positioning and feeding, the process hole set comprises a plurality of process holes distributed at intervals in the feeding direction, and the distance between every two adjacent process holes is consistent with the feeding step pitch. According to the micro-channel fin layout structure, the process holes are designed in the isolation belts between the material sheet groups formed by the N rows of material sheets, so that the positioning of the material belts in the mold is realized, the problem of difficult feeding is solved when each process is carried out, the layout structure is reasonable, and the material utilization rate is high.

Description

Technical Field

[0001] The utility model relates to the technical field of fin molding, in particular to a microchannel fin arrangement structure. Background Art

[0002] The microchannel fin mold is a new type of high-precision cold punching progressive die for heat exchanger fins. Microchannel fins are different from traditional fins. Fin slots 106 with open notches 107 are arranged in the middle. Figure 1 As shown, the slot width x of the fin slot 106 is relatively small, usually 1.2 mm to 2.5 mm. Since the microchannel fin sheet has low strength, it cannot be accurately positioned in the mold and is difficult to feed, so it is necessary to design process holes on the sheet.

[0003] However, the size of the process hole is generally above 3.0 mm. The conventional solution of designing the process hole at the position of the fin slot 106 and removing the process hole during molding cannot be applied to microchannel fins. Considering the material utilization rate, the arrangement structure of the sheet needs to be redesigned. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide a microchannel fin pattern structure, optimize the position of the design process hole, ensure the reliable positioning of the sheet in the mold, and make full use of the sheet material.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A microchannel fin pattern arrangement structure includes a material strip for producing microchannel fins, the material strip includes a plurality of rows of sheets, the N rows of sheets are connected side by side to form a sheet group, an isolation belt is provided between two adjacent sheet groups, a process hole group for positioning and feeding is provided on the isolation belt, the process hole group includes a plurality of process holes spaced apart along a feeding direction, and the spacing between adjacent process holes is consistent with the feeding step distance.

[0007] Optionally, the value of N is 3, 4, 5, 6, 7 or 8, the width of the sheet group is 100 mm to 500 mm, and the width of the isolation zone is 5 mm to 30 mm.

[0008] Optionally, a punching area, a notching area, a flanging area and a trimming area are sequentially arranged on the material strip along the feeding direction. The punching area is used to punch out process holes on the isolation belt; the notching area is used to form a center groove on the material sheet; the flanging area is used to flanging the center groove to form a fin groove of the microchannel fin, and the area between two adjacent fin grooves forms a branch piece of the microchannel fin; the trimming area is used to cut off the isolation belt and the process holes on the isolation belt, and make the fin groove form an open groove of the microchannel fin.

[0009] Optionally, each central groove is aligned one by one with each process hole in a direction perpendicular to the feeding direction.

[0010] Optionally, the microchannel fin includes a base sheet, a plurality of branches extending from one side of the base sheet, a fin groove is arranged between two adjacent branches, a corrugated portion and / or a louver is arranged on the branch sheet, and a corrugated forming area along the feeding direction and located in front of the punching area and a louver forming area located behind the punching area are correspondingly arranged on the material strip, the corrugated forming area is used to form the corrugated portion on the material sheet, and the louver forming area is used to form the louver on the material sheet.

[0011] Optionally, the support sheet is further provided with spacing protrusions, and the material strip is further provided with a tear forming area along the feeding direction and located between the notch area and the trimming area, and the tear forming area is used to form the spacing protrusions on the material sheet.

[0012] Optionally, each row of sheets in the sheet group is arranged in the same manner so that the base sheets of one row of microchannel fins are formed to abut against the heads of the supporting sheets of another row of microchannel fins.

[0013] Optionally, two adjacent rows of sheets in the sheet group are arranged in a mirror-symmetrical manner, so that the base sheets of one row of microchannel fins are adjacent to the base sheets of another row of microchannel fins, or the heads of the branches of one row of microchannel fins are adjacent to the heads of the branches of another row of microchannel fins.

[0014] Optionally, a longitudinal cutting area is further provided on the material belt along the feeding direction and located behind the trimming area, and the longitudinal cutting area is used to separate the sheets in each column in the sheet group.

[0015] Optionally, a cross-cutting area is further provided on the material belt along the feeding direction and located behind the longitudinal cutting area, and the cross-cutting area is used to cut each column of material sheets into a set length.

[0016] The beneficial effects of the utility model are as follows: the microchannel fin pattern arrangement structure designs the process holes on the isolation belt between the material sheet groups composed of N rows of material sheets, and the material sheet is positioned in the mold by multiple process holes corresponding to the feeding step distance. When passing through each process, the process holes solve the problem of difficult feeding, and then the isolation belt and the process holes are removed during the subsequent trimming, which does not affect the molding of the microchannel fin. The pattern arrangement structure is reasonable and the material utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a microchannel fin provided by an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of a microchannel fin arrangement structure provided by an embodiment of the utility model;

[0019] Figure 3This is a schematic diagram of a first arrangement of the material sheets and process holes in the microchannel fin arrangement structure provided by an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of a second arrangement of the material sheets and the process holes in the microchannel fin arrangement structure provided by an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of a third arrangement of the material sheets and the process holes in the microchannel fin arrangement structure provided by an embodiment of the utility model;

[0022] Figure 6 This is another structural schematic diagram of the microchannel fin provided in an embodiment of the utility model.

[0023] In the attached figure:

[0024] 100, microchannel fin; 101, substrate; 102, support; 103, spacer protrusion; 104, corrugated portion; 105, louver; 106, fin slot; 107, open slot;

[0025] 1. Sheet group; 2. Isolation belt; 3. Process hole; 4. Center groove;

[0026] A, corrugated forming area; B, punching area; C, louver forming area; D, notch punching area; E, tear forming area; F, trimming area; G, longitudinal cutting area; H, transverse cutting area; I, flanging area; J, feeding area. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a composite vulcanization connection; it can also be a detachable connection, or an integral connection; it can be an adhesive connection, a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] This preferred embodiment provides a microchannel fin pattern structure for Figure 1 The microchannel fin 100 shown includes a substrate 101, a plurality of support pieces 102 extending from one side of the substrate 101, a spacing protrusion 103 is respectively provided on the root and the head of each support piece 102, a corrugated portion 104 and a louver 105 are provided between the two spacing protrusions 103, the corrugated portion 104 and the louver 105 are arranged along the extension direction of the support piece 102, a fin groove 106 is provided between two adjacent support pieces 102, and one end of the fin groove 106 has an open notch 107.

[0032] See also Figure 2 As shown, the microchannel fin arrangement structure includes a material strip for producing microchannel fins 100, the material strip includes a plurality of rows of sheets, N rows of sheets are connected side by side to form a sheet group 1, an isolation belt 2 is arranged between two adjacent sheet groups 1, a process hole group for positioning and feeding is arranged on the isolation belt 2, the process hole group includes a plurality of process holes 3 spaced apart along the feeding direction, and the spacing between adjacent process holes 3 is consistent with the feeding step distance.

[0033] Therefore, the microchannel fin arrangement structure designs the process holes 3 on the isolation belt 2 between the sheet group 1 composed of N rows of sheets, and the material belt is positioned in the mold by multiple process holes 3 corresponding to the feeding step distance. When passing through each process, the process holes 3 solve the problem of difficult feeding, and then the isolation belt 2 and the process holes 3 are removed during the subsequent trimming, which does not affect the molding of the microchannel fin 100. The arrangement structure is reasonable and the material utilization rate is high.

[0034] Among them, the value of N is preferably 3, 4, 5, 6, 7 or 8. In this embodiment, the sheet group 1 composed of four rows of sheets is taken as an example. The width of the sheet group 1 is controlled at 100mm to 500mm to ensure stable feeding; the width of the isolation belt 2 is set at 5mm to 30mm to reduce the waste of the material belt.

[0035] Specifically, according to Figure 1 The structure of the microchannel fin 100 shown in the figure has a corrugated forming area A, a punching area B, a louver forming area C, a notch area D, a flanging area I, a tearing forming area E and a trimming area F arranged in sequence on the material strip along the feeding direction, wherein:

[0036] The corrugated forming area A is used to form a corrugated portion 104 on the sheet;

[0037] The punching area B is used to punch out the process hole 3 on the isolation belt 2;

[0038] The shutter forming area C is used to form the shutter 105 on the material sheet;

[0039] The notching area D is used to form a central groove 4 on the sheet;

[0040] The flange area I is used to flange the central groove 4 to form a fin groove 106 of the microchannel fin, and the area between two adjacent fin grooves 106 forms a branch 102 of the microchannel fin;

[0041] The tear forming area E is used to form a spacing protrusion 103 on the material sheet;

[0042] The trimming area F is used to cut off the isolation belt 2 and the process hole 3 on the isolation belt 2 , and to form an open slot 107 in the fin slot 106 .

[0043] As an alternative, Figure 3 As shown, each row of sheets in the sheet group 1 is arranged in the same manner so that the base sheets 101 of one row of microchannel fins 100 are formed against the heads of the supporting sheets 102 of another row of microchannel fins 100, thereby increasing the material utilization as much as possible.

[0044] As another alternative, Figure 4 and Figure 5 As shown, two adjacent rows of sheets in the sheet group 1 are arranged in a mirror-symmetrical manner, so that the substrate 101 of one row of microchannel fins 100 is adjacent to the substrate 101 of another row of microchannel fins 100, or the head of the support sheet 102 of one row of microchannel fins 100 is adjacent to the head of the support sheet 102 of another row of microchannel fins 100. Whether the substrate 101 is adjacent to the process hole 3 or the head of the support sheet 102 is adjacent to the process hole 3, the forming of the microchannel fin 100 will not be affected.

[0045] Furthermore, each central groove 4 is aligned one by one with each process hole 3 in a direction perpendicular to the feeding direction, thereby optimizing the layout of the process holes 3 and the microchannel fins 100, achieving accurate positioning of the material strip in the mold, and ensuring the punching quality.

[0046] Furthermore, a longitudinal cutting area G is provided on the material belt along the feeding direction and behind the trimming area F. The longitudinal cutting area G is used to separate the sheets in each column in the sheet group 1 .

[0047] Furthermore, a cross-cutting area H is provided on the material strip along the feeding direction and behind the longitudinal cutting area G. The cross-cutting area H is used to cut each row of material sheets into a set length, and finally form a microchannel fin 100 of a required size.

[0048] In addition, the edge of the process hole 3 is provided with a flange to improve the feeding accuracy.

[0049] Furthermore, a feeding area J is provided on the material belt along the feeding direction and between the tear forming area E and the trimming area F, and the feeding area J is used to drive the material belt to move a set distance.

[0050] In addition, for only the corrugated portion 104, or only the louver 105 (such as Figure 6 The sheet types of microchannel fins 100 such as those shown in FIG. 1 and FIG. 2 can all adopt the arrangement structure of this embodiment, and only the forming area needs to be adjusted accordingly, which will not be described in detail here.

[0051] The above embodiments are only to illustrate the basic principles and characteristics of the utility model. The utility model is not limited by the above embodiments. Without departing from the spirit and scope of the utility model, the utility model has various changes and modifications, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. Microchannel fin arrangement structure, characterized in that: The invention comprises a material belt for producing a microchannel fin (100), the material belt comprising a plurality of rows of sheets, the N rows of sheets being connected side by side to form a sheet group (1), an isolation belt (2) being arranged between two adjacent sheet groups (1), the isolation belt (2) being provided with a process hole group for positioning and feeding, the process hole group comprising a plurality of process holes (3) spaced apart along a feeding direction, the spacing between adjacent process holes (3) being consistent with the feeding step distance.

2. The microchannel fin arrangement structure according to claim 1, characterized in that: The value of N is 3, 4, 5, 6, 7 or 8, the width of the sheet group (1) is 100 mm to 500 mm, and the width of the isolation belt (2) is 5 mm to 30 mm.

3. The microchannel fin arrangement structure according to claim 1, characterized in that: The material strip is provided with a punching area (B), a notching area (D), a flanging area (I) and a trimming area (F) in sequence along the feeding direction. The punching area (B) is used to punch out the process hole (3) on the isolation belt (2); The notching area (D) is used to form a central groove (4) on the sheet; The flanged area (I) is used to flange the central groove (4) to form a fin groove (106) of the microchannel fin, and the area between two adjacent fin grooves (106) forms a branch piece (102) of the microchannel fin; The trimming area (F) is used to cut off the isolation belt (2) and the process hole (3) on the isolation belt (2), and to make the fin groove (106) form an open notch (107) of the microchannel fin.

4. The microchannel fin arrangement structure according to claim 3, characterized in that: Each of the central grooves (4) is aligned one by one with each of the process holes (3) in a direction perpendicular to the feeding direction.

5. The microchannel fin arrangement structure according to claim 3, characterized in that: The microchannel fin (100) comprises a base sheet (101), a plurality of support sheets (102) extending from one side of the base sheet (101), a fin slot (106) being provided between two adjacent support sheets (102), a corrugated portion (104) and / or a louver (105) being provided on the support sheet (102), and a corrugated forming area (A) located in front of the punching area (B) and / or a louver forming area (C) located behind the punching area (B) being provided on the material strip accordingly, the corrugated forming area (A) being used to form the corrugated portion (104) on the material sheet, and the louver forming area (C) being used to form the louver (105) on the material sheet.

6. The microchannel fin arrangement structure according to claim 5, characterized in that: The support sheet (102) is also provided with a spacing protrusion (103), and the material strip is also provided with a tear forming area (E) along the feeding direction and located between the punching area (D) and the trimming area (F), and the tear forming area (E) is used to form the spacing protrusion (103) on the material sheet.

7. The microchannel fin arrangement structure according to claim 5, characterized in that: The sheets in each row of the sheet group (1) are arranged in the same manner so that the base sheets (101) of one row of the microchannel fins (100) are formed so that the heads of the support sheets (102) of another row of the microchannel fins (100) are adjacent to each other.

8. The microchannel fin arrangement structure according to claim 5, characterized in that: The two adjacent rows of the sheet group (1) are arranged in a mirror-symmetrical manner, so that the base sheets (101) of one row of microchannel fins (100) are adjacent to the base sheets (101) of another row of microchannel fins (100), or the heads of the support sheets (102) of one row of microchannel fins (100) are adjacent to the heads of the support sheets (102) of another row of microchannel fins (100).

9. The microchannel fin arrangement structure according to claim 3, characterized in that: The material belt is also provided with a longitudinal cutting area (G) along the feeding direction and located behind the trimming area (F), and the longitudinal cutting area (G) is used to separate the sheets in each column in the sheet group (1).

10. The microchannel fin arrangement structure according to claim 9, characterized in that: The material belt is also provided with a transverse cutting area (H) along the feeding direction and located behind the longitudinal cutting area (G), and the transverse cutting area (H) is used to cut each column of the material sheets into a set length.

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