Extrusion die for harmonica-shaped tube of heat exchanger

Abstract

The utility model belongs to the field of solar photovoltaic panels, particularly relates to an extrusion die for a harmonica-shaped tube of a heat exchanger, and aims to solve the problems that when the conventional extrusion die for the harmonica-shaped tube of the heat exchanger is used, as an upper die and a lower die of the extrusion die are not provided with demolding mechanisms, products in the die are inconvenient to demold and collect; according to the scheme, the mold comprises a bottom plate, a lower mold body, an upper mold body and a demolding mechanism; a support is arranged on the bottom plate, a first mounting plate is arranged on the support, a lower die is fixedly mounted on the first mounting plate, a first hydraulic cylinder is fixedly mounted on the support, a second mounting plate is fixedly connected to one end of the first hydraulic cylinder, and an upper die is fixedly mounted on the second mounting plate. According to the automatic demolding and collecting device, the effect of automatically demolding and collecting the harmonica-shaped tube of the heat exchanger can be achieved through cooperation of all the components, and the machining efficiency and convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of solar photovoltaic panel technology, and in particular to an extrusion die for a harmonica tube in a heat exchanger. Background Technology

[0002] The harmonica tube (hereinafter referred to as the harmonica tube) is named for its end face shape, which resembles a harmonica. It is an essential aluminum alloy profile for heat exchange systems in automobiles, home air conditioners, etc. During use, the harmonica tube can be filled with cooling medium and used as a fluid conduit for the heat exchange system.

[0003] The characteristics of straight "harmonica" type heat exchange tube aluminum profiles are their large length-to-width ratio (L / B>23), the presence of reinforcing ribs in the middle, thin wall thickness and thin reinforcing ribs (C=0.5mm), and a flatness requirement of 0.2mm. This inevitably increases the difficulty of production, making molding difficult, extrusion ratio large, unstable, prone to swaying, and resulting in low output. In response to the above problems, the document with application number 202121888002.0 discloses an extrusion die for harmonica tubes in heat exchangers, which includes an upper die and a lower die. The characteristic is that it also includes a straightening plate set on one side of the lower die, which is used to straighten the arc-shaped harmonica tube profile into a straight harmonica tube profile.

[0004] However, the existing extrusion dies for heat exchanger harmonica tubes do not have demolding mechanisms on the upper and lower dies, making it inconvenient to demold and collect the products inside the die, which affects the production efficiency of heat exchanger harmonica tubes and leaves room for improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an extrusion die for harmonica tubes in heat exchangers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An extrusion die for a heat exchanger harmonica tube includes a base plate, a lower die, an upper die, and a demolding mechanism;

[0008] A bracket is provided on the base plate, and a mounting plate is provided on the bracket. A lower mold is fixedly mounted on the mounting plate. A hydraulic cylinder is fixedly mounted on the bracket. One end of the hydraulic cylinder is fixedly connected to a mounting plate. An upper mold is fixedly mounted on the mounting plate. The upper mold corresponds to the lower mold. A heat exchanger harmonica tube is provided inside the lower mold. A demolding mechanism is provided on the upper mold, the lower mold and the bracket. A control module is provided on the bracket. The demolding mechanism is connected to the control module.

[0009] The demolding mechanism includes a push plate, a spring, and an air pump. The upper and lower molds are slidably connected by the push plate. Through the coordinated design of hydraulic cylinder one, upper mold, hydraulic cylinder two, mounting plate one, lower mold, demolding mechanism, and control module, the heat exchanger harmonica tubes can be automatically demolded and collected, improving processing efficiency and convenience. Moreover, the structure is simple and more practical.

[0010] Specifically, each of the two push plates has a groove, and a spring is fixedly installed in each of the two grooves. One end of each spring is fixedly connected to the upper mold and the lower mold, respectively. One of the two push plates is in contact with the harmonica tube of the heat exchanger. The elastic potential energy of the two springs causes the two push plates to return to their original shape.

[0011] Specifically, the air pump is fixedly mounted on the bracket. One end of the air pump is equipped with two sealed hoses. One end of each hose is sealed to the upper mold and the lower mold, respectively. The two hoses correspond to the two push plates. Driven by the air pump and the action of the two hoses, gas is supplied between the two push plates and the upper and lower molds. Under the action of air pressure, the two push plates slide on the upper and lower molds, respectively, and the two springs are stretched and stored. At the same time, the two push plates push the heat exchanger harmonica tube and cause the heat exchanger harmonica tube to disengage from the upper and lower molds.

[0012] Specifically, each of the two push plates is fixedly connected to a slider. The four sliders are slidably connected to the upper mold and the lower mold, respectively. The four sliders prevent the two push plates from detaching. Each of the two push plates has two air holes that are connected to two grooves. The air pump is connected to the control module. The four air holes prevent excessive air pressure between the two push plates and the upper mold and the lower mold, respectively.

[0013] Specifically, mounting plate one is equipped with a rotating shaft, which is rotatably connected to the bracket. Mounting plate two is slidably connected to the bracket. Hydraulic cylinder one is connected to the control module. The rotating shaft facilitates the movement of mounting plate one. A limit frame is provided on the base plate, which abuts against mounting plate one. The limit frame can limit the position of fixed plate one, thereby ensuring that the lower mold corresponds to the upper mold.

[0014] Specifically, both the mounting plate and the base plate are equipped with U-shaped plates. The two U-shaped plates are hinged together by the same hydraulic cylinder. The hydraulic cylinder is connected to the control module. Driven by the hydraulic cylinder and the two U-shaped plates and the rotating shaft, the mounting plate rotates around the rotating shaft at a certain angle. At the same time, the mounting plate moves the lower mold synchronously, causing the lower mold to tilt, thereby achieving the effect of guiding the mechanical energy of the heat exchanger harmonica tube.

[0015] Specifically, a collection box is provided on the base plate, which corresponds to the mounting plate and is used to collect the harmonica tubes of the heat exchanger.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention relates to an extrusion die for heat exchanger harmonica tubes. By activating an air pump, gas is supplied between two push plates and the upper and lower dies via the pump's drive and two hoses. Under air pressure, the push plates slide on the upper and lower dies, respectively, stretching and storing force on two springs. Simultaneously, the push plates push the heat exchanger harmonica tube, causing it to detach from the upper and lower dies. At this point, due to the tilting of the lower die and mounting plate, the heat exchanger harmonica tube slides into a collection box under the action of the mounting plate and the lower die. This achieves automatic demolding and collection of the heat exchanger harmonica tube, improving convenience and processing efficiency.

[0018] This utility model discloses an extrusion die for a heat exchanger harmonica tube. Driven by a hydraulic cylinder and the action of two U-shaped plates and a rotating shaft, the mounting plate rotates a certain angle around the rotating shaft. At the same time, the mounting plate moves the lower die synchronously, causing the lower die to tilt, thereby achieving the effect of guiding the mechanical energy of the heat exchanger harmonica tube. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary. The structures, proportions, sizes, etc., shown in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance, and any modification of the structure, change of the proportional relationship, or adjustment of the size is not permitted.

[0020] Figure 1 This is a three-dimensional structural diagram of an extrusion die for a heat exchanger harmonica tube proposed in this utility model.

[0021] Figure 2 This is a front view anatomical diagram of the extrusion die for a heat exchanger harmonica tube proposed in this utility model.

[0022] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.

[0023] In the diagram: 1. Base plate; 2. Bracket; 3. Mounting plate one; 4. Lower mold; 5. Hydraulic cylinder one; 6. Mounting plate two; 7. Upper mold; 8. Push plate; 9. Spring; 10. Slider; 11. Air pump; 12. Hose; 13. U-shaped plate; 14. Hydraulic cylinder two; 15. Rotating shaft; 16. Control module; 17. Collection box; 18. Heat exchanger harmonica tube; 19. Limiting bracket. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figure 1-3 An extrusion die for a heat exchanger harmonica tube includes a base plate 1, a lower die 4, an upper die 7, and a demolding mechanism.

[0026] A bracket 2 is provided on the base plate 1, an mounting plate 3 is provided on the bracket 2, a lower mold 4 is fixedly mounted on the mounting plate 3, a hydraulic cylinder 5 is fixedly mounted on the bracket 2, one end of the hydraulic cylinder 5 is fixedly connected to a mounting plate 6, an upper mold 7 is fixedly mounted on the mounting plate 6, the upper mold 7 corresponds to the lower mold 4, a heat exchanger harmonica tube 18 is provided inside the lower mold 4, a demolding mechanism is provided on the upper mold 7, the lower mold 4 and the bracket 2, a control module 16 is provided on the bracket 2, and the demolding mechanism is connected to the control module 16;

[0027] The demolding mechanism includes a push plate 8, a spring 9, and an air pump 11. The upper mold 7 and the lower mold 4 are slidably connected by the push plate 8. Through the coordinated design of the hydraulic cylinder 1 5, the upper mold 7, the hydraulic cylinder 2 14, the mounting plate 1 3, the lower mold 4, the demolding mechanism, and the control module 16, the heat exchanger harmonica tube 18 can be automatically demolded and collected, improving processing efficiency and convenience. Moreover, the structure is simple and the practicality is higher.

[0028] In this embodiment, each of the two push plates 8 has a groove 1, and each of the two grooves 1 has a spring 9 fixedly installed in it. One end of each spring 9 is fixedly connected to the upper mold 7 and the lower mold 4 respectively. One of the two push plates 8 is in contact with the heat exchanger harmonica tube 18. The elastic potential energy of the two springs 9 causes the two push plates 8 to return to their original state.

[0029] In this embodiment, the air pump 11 is fixedly installed on the bracket 2. One end of the air pump 11 is provided with a sealed connection of two hoses 12. One end of the two hoses 12 is sealed to the upper mold 7 and the lower mold 4 respectively. The two hoses 12 are respectively corresponding to the two push plates 8. Through the drive of the air pump 11 and the action of the two hoses 12, gas is delivered between the two push plates 8 and the upper mold 7 and the lower mold 4 respectively. Under the action of air pressure, the two push plates 8 slide on the upper mold 7 and the lower mold 4 respectively, and the two springs 9 are stretched and stored. At the same time, the two push plates 8 push the heat exchanger harmonica tube 18 and cause the heat exchanger harmonica tube 18 to disengage from the upper mold 7 and the lower mold 4.

[0030] In this embodiment, two push plates 8 are fixedly connected to sliders 10. The four sliders 10 are slidably connected to the upper mold 7 and the lower mold 4 respectively. The four sliders 10 prevent the two push plates 8 from detaching. Two air holes are opened on each of the two push plates 8 and are respectively connected to two grooves. The air pump 11 is connected to the control module 16. The four air holes prevent the air pressure between the two push plates 8 and the upper mold 7 and the lower mold 4 from being too high.

[0031] In this embodiment, mounting plate 3 is provided with a rotating shaft 15, which is rotatably connected to bracket 2. Mounting plate 6 is slidably connected to bracket 2. Hydraulic cylinder 5 is connected to control module 16. The rotating shaft 15 facilitates the movement of mounting plate 3. A limiting frame 19 is provided on the base plate 1, which abuts against mounting plate 3. The limiting frame 19 can limit the position of fixed plate 3, thereby ensuring that the lower mold 4 corresponds to the upper mold 7.

[0032] In this embodiment, both the mounting plate 13 and the base plate 1 are provided with U-shaped plates 13. The two U-shaped plates 13 are hinged together by the same hydraulic cylinder 14. The hydraulic cylinder 14 is connected to the control module 16. Through the drive of the hydraulic cylinder 14 and the action of the two U-shaped plates 13 and the rotating shaft 15, the mounting plate 13 rotates around the rotating shaft 15 at a certain angle. At the same time, the mounting plate 13 drives the lower mold 4 to move synchronously, thereby causing the lower mold 4 to tilt, thus achieving the effect of guiding the mechanical energy of the heat exchanger harmonica tube 18.

[0033] In this embodiment, a collection box 17 is provided on the base plate 1. The collection box 17 corresponds to the mounting plate 3 and is used to collect the harmonica tubes 18 of the heat exchanger.

[0034] Working principle: During use, the air pump 11, hydraulic cylinder 5 and hydraulic cylinder 14 are controlled and driven by the control module 16;

[0035] Driven by hydraulic cylinder 5 and mounted plate 6, the upper mold 7 moves to the lower mold 4, and the upper mold 7 and the lower mold 4 interact with each other, thereby achieving the purpose of extruding and molding the heat exchanger harmonica tube 18.

[0036] Then, the reverse-drive hydraulic cylinder 5 separates the upper mold 7 from the lower mold 4, and at the same time, the hydraulic cylinder 14 is activated. Through the drive of the hydraulic cylinder 14 and the action of the two U-shaped plates 13 and the rotating shaft 15, the mounting plate 3 rotates around the rotating shaft 15 at a certain angle. At the same time, the mounting plate 3 drives the lower mold 4 to move synchronously, thereby causing the lower mold 4 to tilt, thus achieving the effect of guiding the mechanical energy of the heat exchanger harmonica tube 18.

[0037] Simultaneously, the air pump 11 is activated, and gas is supplied between the two push plates 8 and the upper mold 7 and lower mold 4 through the drive of the air pump 11 and the action of the two hoses 12. Under the action of air pressure, the two push plates 8 slide on the upper mold 7 and lower mold 4 respectively, and the two springs 9 are stretched and stored. At the same time, the two push plates 8 push the heat exchanger harmonica tube 18 and cause the heat exchanger harmonica tube 18 to detach from the upper mold 7 and lower mold 4. At this time, since the lower mold 4 and the mounting plate 3 are tilted, the heat exchanger harmonica tube 18 slides into the collection box 17 through the action of the mounting plate 3 and the lower mold 4, thereby achieving the effect of automatic demolding and collection of the heat exchanger harmonica tube 18, improving convenience and processing efficiency.

[0038] The technological advancement of this invention compared to the prior art is that, through the cooperation of various components, the heat exchanger harmonica tube 18 can be automatically demolded and collected, improving processing efficiency and convenience. Moreover, the structure is simple and more practical.

Claims

1. An extrusion die for a heat exchanger harmonica tube, characterized in that, It includes a base plate (1), a lower mold (4), an upper mold (7), and a demolding mechanism; The base plate (1) is provided with a bracket (2), the bracket (2) is provided with a mounting plate (3), the mounting plate (3) is fixedly installed with a lower mold (4), the bracket (2) is fixedly installed with a hydraulic cylinder (5), one end of the hydraulic cylinder (5) is fixedly connected to a mounting plate (6), the mounting plate (6) is fixedly installed with an upper mold (7), the upper mold (7) corresponds to the lower mold (4), the lower mold (4) is provided with a heat exchanger harmonica tube (18), the demolding mechanism is provided on the upper mold (7), the lower mold (4) and the bracket (2), the bracket (2) is provided with a control module (16), and the demolding mechanism is connected to the control module (16); The demolding mechanism includes a push plate (8), a spring (9) and an air pump (11), and the upper mold (7) and the lower mold (4) are slidably connected to the push plate (8).

2. The extrusion die for a heat exchanger harmonica tube according to claim 1, characterized in that, Both of the push plates (8) have a groove, and a spring (9) is fixedly installed in each of the two grooves. One end of each spring (9) is fixedly connected to the upper mold (7) and the lower mold (4) respectively. One of the push plates (8) is in contact with the heat exchanger harmonica tube (18).

3. An extrusion die for a heat exchanger harmonica tube according to claim 2, characterized in that, The air pump (11) is fixedly installed on the bracket (2). One end of the air pump (11) is provided with two hoses (12) for sealing connection. One end of the two hoses (12) is respectively sealed to the upper mold (7) and the lower mold (4). The two hoses (12) are respectively corresponding to the two push plates (8).

4. An extrusion die for a heat exchanger harmonica tube according to claim 3, characterized in that, Each of the two push plates (8) is fixedly connected with a slider (10), and the four sliders (10) are slidably connected to the upper mold (7) and the lower mold (4) respectively. Each of the two push plates (8) has two air holes and is connected to the two grooves respectively. The air pump (11) is connected to the control module (16).

5. An extrusion die for a heat exchanger harmonica tube according to claim 1, characterized in that, The mounting plate one (3) is provided with a rotating shaft (15), which is rotatably connected to the bracket (2). The mounting plate two (6) is slidably connected to the bracket (2). The hydraulic cylinder one (5) is connected to the control module (16). The base plate (1) is provided with a limiting frame (19), which abuts against the mounting plate one (3).

6. An extrusion die for a heat exchanger harmonica tube according to claim 5, characterized in that, Both the mounting plate (3) and the base plate (1) are provided with U-shaped plates (13), and the two U-shaped plates (13) are hinged together by the same hydraulic cylinder (14), which is connected to the control module (16).

7. An extrusion die for a heat exchanger harmonica tube according to claim 6, characterized in that, The base plate (1) is provided with a collection box (17), which corresponds to the mounting plate (3).

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