Fin micro-channel height-adjustable mold structure and fin micro-channel structure thereof

Abstract

The utility model discloses a fin microchannel height-adjustable die structure which comprises a root straightening station and a top bending station which are sequentially arranged in the fin conveying direction, the root straightening station is correspondingly provided with a straightening sub-die, and the top bending station is correspondingly provided with a bending sub-die. The straightening sub-die comprises a straightening lower die and a straightening upper die, a straightening male die is arranged on the straightening lower die, and a straightening female die matched with the straightening male die is arranged on the straightening upper die; the bending sub-die comprises a bending lower die and a bending upper die, a bending female die is arranged on the bending lower die, and a bending male die matched with the bending female die is arranged on the bending upper die. According to the utility model, the height of the L-shaped supporting sheet on the micro-channel can be conveniently adjusted, the time and the cost for changing the die are saved, the supporting strength of the L-shaped supporting sheet of the fin can be improved, and the device can be widely applied to the technical field of fin processing.

Description

Technical Field

[0001] The utility model relates to the technical field of fin processing, in particular to a fin microchannel height-adjustable die structure. Background Art

[0002] After the fins are completed, the fins need to be stacked up, and then the assembly of the heat exchanger or condenser is completed through the welding process. In order to control the distance between two adjacent fins, a spacing control structure is provided on the fins. The gap between the two adjacent fins is controlled by the "L"-shaped support sheet on the spacing control structure. The upper fin is stacked on the "L"-shaped support sheet of the lower fin. In the current fin processing, the "L"-shaped support sheet on the microchannel is first bent at the top and then bent at the root, such as Figure 1 As shown in the material strip diagram. In this process method, once the mold is set, the height of the "L"-shaped support piece needs to be adjusted. The relative positions of the upper bending sub-mold and the root bending sub-mold need to be adjusted. Therefore, two sub-molds need to be replaced, which is inconvenient to adjust and has high replacement costs. For this reason, it is necessary to adjust the existing mold to facilitate the adjustment of the height of the "L"-shaped support piece and reduce the cost of adjusting the height of the "L"-shaped support piece. Utility Model Content

[0003] The utility model aims to provide a fin microchannel height adjustable die structure to solve the problems of inconvenient height adjustment of "L"-shaped support plates and high adjustment cost of existing fin microchannel processing dies.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a fin microchannel height adjustable mold structure, including a root straightening station and a top bending station arranged in sequence along the fin conveying direction, the root straightening station is correspondingly provided with a straightening sub-mold, and the top bending station is correspondingly provided with a bending sub-mold;

[0005] The straightening sub-die comprises a straightening lower die and a straightening upper die, the straightening lower die is provided with a straightening punch, and the straightening upper die is provided with a straightening die matched with the straightening punch; the bending sub-die comprises a bending lower die and a bending upper die, the bending lower die is provided with a bending die, and the bending upper die is provided with a bending punch matched with the bending die.

[0006] Furthermore, the bending upper die is provided with an inclined wedge assembly for adjusting the height of the bending punch, including an upper inclined wedge and a lower inclined wedge, and the lower inclined wedge is located above the bending punch; the bending punch includes a punch head extending into the bending die and a forming step arranged at the rear end of the punch head.

[0007] In order to improve the strength of the vertical section of the "L"-shaped support plate and facilitate bending, a convex rib for forming a reinforcing rib is provided on the straightening punch.

[0008] The utility model also discloses a fin microchannel structure, including a fin body and a group of "L"-shaped support plates arranged on the fin body, wherein the "L"-shaped support plates include a vertical section perpendicular to the fin body and a horizontal section above the vertical section and parallel to the fin body, and the vertical section is provided with reinforcing ribs growing in a vertical direction, and the reinforcing ribs extend upward from the bottom of the vertical section.

[0009] Preferably, the reinforcing rib is located in the middle of the width direction of the "L"-shaped supporting piece.

[0010] Beneficial effects of the utility model: The utility model adjusts the microchannel forming die to first straighten and then bend, so that the height of the "L"-shaped support sheet can be adjusted by adjusting the matching depth of the bending punch and the bending die, that is, only the height of the bending punch or the bending die needs to be adjusted, the adjustment amount is small, the adjustment is convenient, and the change cost is low. At the same time, by setting a convex rib on the straightening punch, it is used to form a reinforcing rib on the vertical section of the "L"-shaped support sheet, thereby ensuring the strength of the vertical section, avoiding deformation during bending, and ensuring the accuracy of bending.

[0011] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a material strip diagram of the present utility model.

[0013] Figure 2 for Figure 1 Sectional view of AA.

[0014] Figure 3 for Figure 1 Cross-sectional view of BB.

[0015] Figure 4 It is a structural schematic diagram of the utility model.

[0016] Figure 5 It is a schematic diagram of the cooperation between the straightening punch and the straightening die in the utility model.

[0017] Figure 6 It is a schematic diagram of the cooperation between the bending punch and the bending die in the utility model. DETAILED DESCRIPTION

[0018] Embodiment, a fin microchannel height adjustable mold structure, used for processing such as Figure 3 The fin microchannel structure shown in the figure comprises a root straightening station a and a top bending station b which are arranged successively along the fin conveying direction. Figure 1 The root straightening station a is provided with a straightening sub-mold 1, and the top bending station b is provided with a bending sub-mold 2. Figures 4 to 6 The utility model straightens the root of the fin microchannel structure first, and then bends the upper part to form an "L"-shaped support sheet 20. This process is convenient for adjusting the height of the "L"-shaped support sheet 20 to meet different design requirements, and the adjustment is simple, convenient and low-cost.

[0019] Specifically, the straightening sub-die 1 includes a straightening lower die 11 and a straightening upper die 12. The straightening lower die 11 includes a lower sub-die 113 fixed on the lower die plate 100, a first punch fixing plate 114 fixed on the lower sub-die 113, a straightening punch 111 is fixed on the first punch fixing plate 114, a lower discharge plate 115 is also provided on the first punch fixing plate 114, and a spring (not marked in the figure) is provided between the lower discharge plate 115 and the first punch fixing plate 114.

[0020] The straightening upper die 12 comprises an upper pad 122 fixed on the upper die plate 200, an upper sub-die plate 123 and a concave die plate 124 stacked on the upper pad 122 in sequence, and a straightening concave die 121 matched with the straightening convex die 111 is fixedly arranged on the concave die plate 124. The "L"-shaped support sheet 20 on the microchannel is straightened from the root through the cooperation of the straightening convex die 111 and the straightening concave die 121, so that it is in a vertical state with the fin body 10, as shown in FIG. Figure 2 shown.

[0021] The bending sub-die 2 includes a bending lower die 21 and a bending upper die 22. The bending lower die 21 includes a lower pad 212 arranged on the lower die plate 100, a bending concave die plate 213 fixedly arranged on the lower pad 212, and a bending concave die 211 fixedly arranged on the bending concave die plate 213. The bending upper die 22 includes an inclined wedge fixing plate 225 fixed on the upper die plate 200, and an upper inclined wedge 223 and a lower inclined wedge 224 arranged on the inclined wedge fixing plate 225 and cooperating with each other. A second punch fixing plate 226 is fixedly arranged below the inclined wedge fixing plate 225, and a bending punch 221 adapted to the bending concave die 211 is arranged on the second punch fixing plate 226. A countersunk hole 2261 is arranged on the second punch fixing plate 226, and the countersunk hole 2261 extends upward to the bottom of the lower inclined wedge 224. A limiting head 2213 is arranged on the top of the bending punch 221. The free travel height of the bending punch 221 is adjusted by the cooperation of the upper inclined wedge 223 and the lower inclined wedge 224, so as to adjust the cooperation depth between the bending punch 221 and the bending die 211 during stamping, so as to achieve the adjustment of the bending height, which is simple and convenient. The cooperation of the upper inclined wedge 223 and the lower inclined wedge 224 is a prior art and will not be described in detail here. In addition, the height of the bending punch 221 can also be adjusted by other structures. A bending stripper plate 227 is arranged below the second punch fixing plate 226, and a spring (marked in the figure) is arranged between the bending stripper plate 227 and the second punch fixing plate 226. At the same time, a limited side pressure plate 228 is arranged on both sides of the bending stripper plate 227 on the second punch fixing plate 226. The side pressure plate 228 is at a height above the second punch fixing plate 226 and is a U-shaped bayonet structure to limit the up and down displacement of the bending stripper plate 227.

[0022] The bending punch 221 further includes a punch head 2211 extending into the bending die 211 and a forming step 2212 arranged at the rear end of the punch head 2211 , and an L-shaped bend is formed by the forming step 2212 .

[0023] In order to ensure that other parts will not be deformed during bending, the straightening punch 111 is provided with a convex rib 112 for forming reinforcing ribs. The convex rib 112 extends from the bottom of the straightening punch 111 to the front end and has a length shorter than the straightening punch 111, so that the front end of the straightening punch 111 does not have the convex rib 112, so that no reinforcing rib is formed on the top of the "L"-shaped supporting piece, which facilitates the bending of the top of the "L"-shaped supporting piece.

[0024] The fin microchannel structure prepared by using the above-mentioned fin microchannel height adjustable mold structure, such as Figures 1 to 3As shown, it includes a fin body 10 and a group of "L"-shaped support sheets 20 arranged on the fin body 10, wherein the "L"-shaped support sheet 20 includes a vertical section 201 perpendicular to the fin body 10 and a horizontal section 202 above the vertical section 201 and parallel to the fin body 10, and the vertical section 201 is provided with a reinforcing rib 203 growing along the vertical direction, and the reinforcing rib 203 extends upward from the bottom of the vertical section 201, and the reinforcing rib 203 is located in the middle position of the width direction of the "L"-shaped support sheet 20. By adding the reinforcing rib 203 to the vertical section 201, the supporting strength of the "L"-shaped support sheet 20 can be improved to prevent deformation after multiple sheets are stacked.

[0025] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A fin microchannel height adjustable mold structure, characterized in that: It comprises a root straightening station and a top bending station which are arranged in sequence along the fin conveying direction, wherein the root straightening station is correspondingly provided with a straightening sub-mold (1), and the top bending station is correspondingly provided with a bending sub-mold (2); The straightening sub-die (1) comprises a straightening lower die (11) and a straightening upper die (12); the straightening lower die (11) is provided with a straightening convex die (111); the straightening upper die (12) is provided with a straightening concave die (121) matched with the straightening convex die (111); the bending sub-die (2) comprises a bending lower die (21) and a bending upper die (22); the bending lower die (21) is provided with a bending concave die (211); the bending upper die (22) is provided with a bending convex die (221) matched with the bending concave die (211).

2. The fin microchannel height adjustable mold structure according to claim 1, characterized in that: The upper bending die (22) is provided with an inclined wedge assembly for adjusting the height of the bending punch (221), comprising an upper inclined wedge (223) and a lower inclined wedge (224), wherein the lower inclined wedge (224) is located above the bending punch (221).

3. The fin microchannel height adjustable mold structure according to claim 2, characterized in that: The bending punch (221) comprises a punch head (2211) extending into the bending die (211) and a forming step (2212) arranged at the rear end of the punch head (2211).

4. The fin microchannel height adjustable mold structure according to claim 1, characterized in that: The straightening punch (111) is provided with a convex rib (112) for forming a reinforcing rib.

5. A fin microchannel structure, comprising a fin body (10), and a group of "L"-shaped support sheets (20) arranged on the fin body (10), characterized in that: The "L"-shaped support sheet (20) comprises a vertical section (201) perpendicular to the fin body (10) and a horizontal section (202) above the vertical section (201) and parallel to the fin body (10), and the vertical section (201) is provided with a reinforcing rib (203) growing in a vertical direction, and the reinforcing rib (203) extends upward from the bottom of the vertical section (201).

6. The fin microchannel structure according to claim 5, characterized in that: The reinforcing rib (203) is located in the middle of the width direction of the "L"-shaped supporting piece (20).

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