A stamping device for heat exchanger fin machining

Abstract

The utility model discloses a stamping device is used in heat exchanger radiating fin processing belongs to stamping device technical field. Mainly include upper die and lower die, the one side fixedly has lower die plate with lower die away from upper die, and the edge fixedly has four positioning piles with lower die plate towards upper die one side, and the one side fixed mounting has fixed plate and closing plate with upper die away from lower die, and fixed plate is located between upper die and closing plate, is provided with two first locating hole and two first guide hole on fixed plate, is provided with two second locating hole with first locating hole position correspondence on closing plate, still is provided with two second guide hole with first guide hole position correspondence on closing plate, is fixedly installed with the locating bush in first locating hole interior, and the guide bush is movably arranged in first guide hole and second guide hole interior, and the locating bush and guide bush all with positioning pile adaptation, and the locating bush and guide bush axial direction parallel. The stamping device for heat exchanger radiating fin processing reaches the effect of reducing the production difficulty of mould.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, and more specifically, it relates to a stamping device for processing heat exchanger fins. Background Technology

[0002] Stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profiles, causing them to undergo plastic deformation or separation, thereby obtaining workpieces (stamped parts) of the required shape and size. To ensure workpiece accuracy, conventional stamping dies have four corresponding positioning pins and sleeves on the upper and lower dies, resulting in high precision requirements for the dies themselves.

[0003] However, the production precision requirements for fins are relatively low, and the use of four positioning stakes and positioning sleeves results in excessively high positioning precision for the upper and lower molds. Furthermore, the fin production molds are used very frequently, and molds with significant wear need to be replaced often, requiring a large number of spare molds to be prepared. The excessively high mold production precision requirements also lead to a large number of scrap molds.

[0004] Therefore, it is necessary to provide a stamping device for processing heat exchanger fins to solve the above problems. Utility Model Content

[0005] Based on the above-mentioned problems in the prior art, the purpose of this application is to provide a stamping device for processing heat exchanger fins, so as to reduce the difficulty of mold production.

[0006] The technical solution adopted by this application to solve its technical problem is: a stamping device for processing heat exchanger fins, including an upper die and a lower die. A lower template is fixed on the side of the lower die away from the upper die. Four positioning pins are fixed on the edge of the lower template facing the upper die. A fixing plate and a closing plate are fixedly installed on the side of the upper die away from the lower die. The fixing plate is located between the upper die and the closing plate. The fixing plate is provided with two first positioning holes and two first guide holes. The closing plate is provided with two second positioning holes corresponding to the positions of the first positioning holes. The closing plate is also provided with two second guide holes corresponding to the positions of the first guide holes. A positioning sleeve is fixedly installed inside the first positioning hole. A guide sleeve is movably installed inside the first guide hole and the second guide hole. The positioning sleeve and the guide sleeve are both adapted to the positioning pins. The axial directions of the positioning sleeve and the guide sleeve are parallel.

[0007] Furthermore, the two first positioning holes correspond to the positions of two positioning stakes that are diagonally opposite each other, and the two first guide holes correspond to the positions of the other two positioning stakes.

[0008] Furthermore, the lower edges of both the positioning sleeve and the guide sleeve are formed with bevels.

[0009] Furthermore, the radii of both the first guide hole and the second guide hole are larger than the radius of the guide sleeve.

[0010] Furthermore, a movable groove is provided at one end of the first guide hole near the closing plate, and a movable ring corresponding to the position of the movable groove is fixedly fitted on the guide sleeve, the depth of the movable groove being adapted to the thickness of the movable ring.

[0011] Furthermore, the difference between the outer and inner radii of the movable ring is greater than the difference between the diameters of the first guide hole and the guide sleeve.

[0012] Furthermore, an elastic ring is fitted inside the movable groove, the movable ring being located inside the elastic ring, and the elastic ring being made of an elastic material.

[0013] The beneficial effects of this utility model are:

[0014] The positioning sleeve is used in conjunction with the positioning pile for positioning and guidance, while the guide sleeve is used in conjunction with the positioning pile for auxiliary guidance.

[0015] With the above structure, the two positioning sleeves maintain a certain positioning accuracy, and the guide sleeve maintains the guiding effect. This means that the upper mold only needs two high-precision first positioning holes and positioning sleeves, and the corresponding lower mold only needs two positioning pins corresponding to the positioning sleeve positions to have high precision. This reduces the production difficulty of the upper and lower molds, improves the production efficiency of the upper and lower molds, and reduces the scrap rate. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is an overall schematic diagram of a stamping device for processing heat exchanger fins according to this application.

[0018] Figure 2 for Figure 1 Exploded view of the upper and middle mold;

[0019] In the picture:

[0020] 1. Upper mold; 11. Fixed plate; 111. First positioning hole; 112. First guide hole; 113. Movable groove; 12. Closing plate; 121. Second positioning hole; 122. Second guide hole; 13. Positioning sleeve; 14. Guide sleeve; 141. Movable ring; 15. Elastic ring;

[0021] 2. Lower formwork; 21. Lower template; 22. Positioning piles. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] like Figure 1-2 As shown, this application provides a stamping device for processing heat exchanger fins, including an upper die 1 and a lower die 2.

[0026] The lower mold 2 is fixed with a lower template 21 on the side away from the upper mold 1, and four positioning stakes 22 are fixed on the edge of the lower template 21 facing the upper mold 1.

[0027] A fixing plate 11 and a closing plate 12 are fixedly installed on the side of the upper mold 1 away from the lower mold 2. The fixing plate 11 is located between the upper mold 1 and the closing plate 12.

[0028] The fixing plate 11 is provided with two first positioning holes 111 and two first guide holes 112. The two first positioning holes 111 correspond to the positions of two positioning posts 22 that are diagonally opposite each other, and the first guide holes 112 correspond to the positions of the other two positioning posts 22.

[0029] The closing plate 12 is provided with two second positioning holes 121 corresponding to the positions of the first positioning hole 111, and the closing plate 12 is also provided with two second guide holes 122 corresponding to the positions of the first guide hole 112.

[0030] A positioning sleeve 13 is fixedly installed inside the first positioning hole 111, and a guide sleeve 14 is movably disposed inside the first guide hole 112 and the second guide hole 122. Both the positioning sleeve 13 and the guide sleeve 14 are adapted to the positioning post 22. The lower edges of both the positioning sleeve 13 and the guide sleeve 14 are formed with bevels. The axes of the positioning sleeve 13 and the guide sleeve 14 are parallel.

[0031] The first guide hole 112 and the second guide hole 122 have the same radius, and the radius of the first guide hole 112 is greater than the radius of the guide sleeve 14.

[0032] A movable groove 113 is provided at one end of the first guide hole 112 near the closing plate 12. A movable ring 141 corresponding to the position of the movable groove 113 is fitted and fixed on the guide sleeve 14. The depth of the movable groove 113 is adapted to the thickness of the movable ring 141, and the difference between the outer and inner radii of the movable ring 141 is greater than the difference between the diameters of the first guide hole 112 and the guide sleeve 14.

[0033] An elastic ring 15 is fitted inside the movable groove 113, and a movable ring 141 is located inside the elastic ring 15. The elastic ring 15 is made of elastic material; in this embodiment, the elastic ring 15 is made of rubber. The second positioning hole 121 is mainly used to avoid the positioning sleeve 13.

[0034] Understandably, during the fin processing, an iron sheet is placed between the upper die 1 and the lower die 2. The upper die 1 and the lower die 2 are each provided with a fin groove for stamping on their opposite sides. An external stamping device drives the upper die 1 and the lower die 2 to squeeze the iron sheet together, so that the fin groove is stamped out of the iron sheet.

[0035] The positioning sleeve 13 and positioning stake 22 can be used to position the upper mold 1 and lower mold 2 as they approach each other, aligning the fin grooves of the upper mold 1 and lower mold 2. Since the two first positioning holes 111 correspond to the positions of the two diagonally opposite positioning stakes 22, the deviation when the upper mold 1 and lower mold 2 are aligned is small.

[0036] Since the radii of both the first guide hole 112 and the second guide hole 122 are larger than those of the guide sleeve 14, the guide sleeve 14 can move inside the first guide hole 112. Once the fixed plate 11 and the closing plate 12 are fixed together, the movable ring 141 cannot leave the movable groove 113. Because the difference between the outer and inner radii of the movable ring 141 is greater than the difference between the diameters of the first guide hole 112 and the guide sleeve 14, the movable ring 141 will always remain between the bottom of the movable groove 113 and the closing plate 12, regardless of where the guide sleeve 14 moves within the first guide hole 112. Since the depth of the movable groove 113 matches the thickness of the movable ring 141, the guide sleeve 14 can only translate within the first guide hole 112, thus preventing the axial direction of the guide sleeve 14 from tilting and maintaining the parallel axial directions of the positioning sleeve 13 and the guide sleeve 14. This allows the positioning sleeve 13 and the guide sleeve 14 to work together as guides.

[0037] With the above structure, compared to the traditional upper die 1 and lower die 2 which have four positioning pins 22 and four positioning sleeves 13, the guiding effect remains unchanged, but the positioning effect is reduced, which can adapt to the lower precision required during fin stamping. At the same time, due to the movable structure of the guide sleeve 14, and the fact that the guide sleeve 14 and the positioning pins 22 do not need to play a positioning role, the precision requirements of the first guide hole 112, the second guide hole 122, and the movable groove 113 are lower than the precision requirements of the first positioning hole 111. That is, the traditional upper die requires four high-precision positioning holes and positioning sleeves, and the four positioning pins of the lower die also need to have high precision. In this stamping device for processing heat exchanger fins, the upper die 1 only needs two high-precision first positioning holes 111 and positioning sleeves 13, and the corresponding lower die only needs two positioning pins 22 corresponding to the position of the positioning sleeves 13 to have high precision. This reduces the production difficulty of the upper die 1 and the lower die, improves the production efficiency of the upper die 1 and the lower die, and reduces the scrap rate.

[0038] The elastic ring 15 is used to keep the guide sleeve 14 in the middle of the first guide hole 112 when the upper mold 1 and the lower mold 2 are separated. This makes it easier for the guide sleeve 14 to be put on the positioning post 22 when the upper mold 1 and the lower mold 2 are close together, thus avoiding the problem that the guide sleeve 14 will move too much to one side and make it difficult to put on the positioning post 22.

[0039] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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.

[0043] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A stamping device for processing heat exchanger fins, characterized in that: The system includes an upper mold (1) and a lower mold (2). A lower template (21) is fixed to the side of the lower mold (2) away from the upper mold (1). Four positioning stakes (22) are fixed to the edge of the lower template (21) facing the upper mold (1). A fixing plate (11) and a closing plate (12) are fixedly installed on the side of the upper mold (1) away from the lower mold (2). The fixing plate (11) is located between the upper mold (1) and the closing plate (12). The fixing plate (11) has two first positioning holes (111) and two first guide holes (112). The closing plate (12) has... Two second positioning holes (121) are provided, corresponding to the positions of the first positioning hole (111). Two second guide holes (122) are also provided on the closed plate (12), corresponding to the positions of the first guide hole (112). A positioning sleeve (13) is fixedly installed inside the first positioning hole (111). A guide sleeve (14) is movably installed inside the first guide hole (112) and the second guide hole (122). The positioning sleeve (13) and the guide sleeve (14) are both adapted to the positioning pile (22). The axial directions of the positioning sleeve (13) and the guide sleeve (14) are parallel.

2. The stamping device for processing heat exchanger fins according to claim 1, characterized in that: The two first positioning holes (111) correspond to the positions of two positioning stakes (22) that are diagonally opposite each other, and the two first guide holes (112) correspond to the positions of the other two positioning stakes (22).

3. The stamping device for processing heat exchanger fins according to claim 1, characterized in that: The lower edges of the positioning sleeve (13) and the guide sleeve (14) are both formed with bevels.

4. The stamping device for processing heat exchanger fins according to claim 1, characterized in that: The radii of the first guide hole (112) and the second guide hole (122) are both greater than the radius of the guide sleeve (14).

5. A stamping device for processing heat exchanger fins according to claim 4, characterized in that: The first guide hole (112) is provided with a movable groove (113) at one end near the closing plate (12). A movable ring (141) corresponding to the position of the movable groove (113) is fixedly fitted on the guide sleeve (14). The depth of the movable groove (113) is adapted to the thickness of the movable ring (141).

6. The stamping device for processing heat exchanger fins according to claim 5, characterized in that: The difference between the outer and inner radii of the movable ring (141) is greater than the difference between the diameters of the first guide hole (112) and the guide sleeve (14).

7. A stamping device for processing heat exchanger fins according to claim 5, characterized in that: An elastic ring (15) is fitted inside the movable groove (113), and the movable ring (141) is located inside the elastic ring (15). The elastic ring (15) is made of elastic material.

Images