Hinge machining method and refrigeration equipment

Abstract

The invention provides a hinge machining method and refrigeration equipment, and when molten metal in a hinge mold is cooled until the molten metal becomes pasty metal melt, the middle section of a copper bar wire is placed in the hinge mold, and the two ends of the copper bar wire are exposed out of the hinge mold, the wiring direction of the copper bar wire in the hinge mold is from the first mold cavity to the second mold cavity, injecting molten metal into the first mold cavity and the second mold cavity again until the first mold cavity and the second mold cavity are filled with the molten metal, and finally cooling to form a hinge with the copper bar wire inside. And the two ends of the copper bar wire are exposed out of the hinge, so that the diameter of the hinge shaft can be effectively reduced due to the close combination of the copper bar wire and the hinge shaft under the condition that the use of the hinge does not affect signal transmission and basic functions, the diameter of the hinge hole in the door body is reduced, and finally the ultrathin door body is realized.

Description

Technical Field

[0001] The invention relates to the field of refrigeration equipment, and in particular to a hinge processing method and refrigeration equipment. Background Art

[0002] With the improvement of living standards, refrigerators have become indispensable household appliances. In order to realize the complex functions of refrigerators, many lines are required to transmit signals. The existing wiring method is: the line led out from the box is placed in the hollow door hinge shaft, and then the door hinge shaft cooperates with the door hinge hole, and finally the line is connected to the door. As the functions of the refrigerator are more complex, the more wiring harnesses there are, and the larger the diameter of the hinge hole.

[0003] Currently, ultra-thin door refrigerators have become a development trend. However, due to the limitation of the size of the hinge hole, the ultra-thin door cannot be made thinner. Therefore, it is necessary to find a new wiring method or a new signal transmission method. Summary of the invention

[0004] The object of the present invention is to provide a hinge processing method and refrigeration equipment to solve the above problems.

[0005] To achieve one of the above-mentioned purposes of the invention, the present invention provides a method for processing a hinge, comprising the following steps: injecting molten metal into a hinge mold having a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft, so that the molten metal fills part of the first mold cavity and part of the second mold cavity; cooling the molten metal in the hinge mold until the molten metal becomes a paste-like molten metal, placing the middle section of the copper bus wire into the hinge mold, and exposing both ends of the copper bus wire to the hinge mold, wherein the routing direction of the copper bus wire in the hinge mold is from the first mold cavity to the second mold cavity; injecting molten metal into the first mold cavity and the second mold cavity again until the molten metal fills the first mold cavity and the second mold cavity; cooling and forming.

[0006] As a further improvement of the present invention, "cooling the molten metal in the hinge mold until the molten metal becomes a paste-like molten metal" specifically means: cooling the molten metal until the temperature of the molten metal drops to 400°C-450°C.

[0007] As a further improvement of the present invention, between "exposing both ends of the copper bus wire to the hinge mold" and "injecting molten metal into the first mold cavity and the second mold cavity again", the processing method also includes: using a pressure roller to press the copper bus wire in the hinge mold into the paste-like metal melt, and the material of the pressure roller can be one of Teflon, graphite, and ceramic.

[0008] As a further improvement of the present invention, after the "cooling forming" step, the processing method further comprises: performing surface heat treatment on the formed hinge.

[0009] As a further improvement of the present invention, before the step of "injecting molten metal into a hinge mold having a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft", the processing method also includes: a method for preparing the molten metal.

[0010] As a further improvement of the present invention, the method for preparing the molten metal specifically includes the following steps: heating and melting an aluminum alloy containing a first preset proportion of magnesium and a second preset proportion of silicon; adding a third preset proportion of rare earth elements to the melted aluminum alloy; cooling the aluminum alloy melt until the aluminum alloy melt becomes a pasty aluminum alloy melt, stirring the aluminum alloy melt at a preset speed for a preset time; and heating again until the aluminum alloy melt becomes an aluminum alloy melt.

[0011] As a further improvement of the present invention, the first preset ratio ranges from 0.2% to 11.5%, and the second preset ratio ranges from 6% to 10%.

[0012] As a further improvement of the present invention, the specific heating process of "heating and melting an aluminum alloy containing a first preset ratio of magnesium and a second preset ratio of silicon" is: firstly heat the aluminum alloy to 200℃-230℃ and keep it warm for 30min-40min, then heat the aluminum alloy to 400℃-450℃ and keep it warm for 15min-20min, and finally heat the aluminum alloy to 690℃-720℃.

[0013] As a further improvement of the present invention, the rare earth element is at least one of lanthanum, ytterbium, and cerium.

[0014] As a further improvement of the present invention, the third preset ratio ranges from 0.5% to 2%.

[0015] As a further improvement of the present invention, the specific process of "cooling the molten aluminum alloy until the molten aluminum alloy becomes a pasty aluminum alloy melt" is: cooling the molten aluminum alloy to 380°C-450°C.

[0016] As a further improvement of the present invention, “stirring the aluminum alloy melt at a preset speed for a preset time” is specifically: stirring the aluminum alloy melt at a speed of 3000 r / min for 1 min, and then stirring the aluminum alloy melt at a speed of 1000 r / min for 1 min.

[0017] As a further improvement of the present invention, after the step of "reheating until the aluminum alloy melt becomes aluminum alloy molten liquid", the method for preparing the molten metal specifically includes the following steps: determining the composition of the aluminum alloy molten liquid and replenishing the lost elements.

[0018] Another aspect of the present invention provides a refrigeration device, comprising a box body and a door body, the refrigeration device also comprises a hinge arranged between the box body and the door body, the hinge is processed according to the processing method described in any one of the above technical solutions.

[0019] The processing method of the hinge of the present invention is as follows: cooling the molten metal in the hinge mold until the molten metal becomes a paste-like molten metal, placing the middle section of the copper bus wire into the hinge mold, and exposing both ends of the copper bus wire to the hinge mold, wherein the routing direction of the copper bus wire in the hinge mold is from the first mold cavity to the second mold cavity, and injecting molten metal into the first mold cavity and the second mold cavity again until the molten metal fills the first mold cavity and the second mold cavity, and finally cooling and forming it into a hinge with a copper bus wire inside, and both ends of the copper bus wire are exposed to the hinge, so that the hinge does not affect the signal transmission and the use of basic functions. Since the copper bus wire is closely combined with the hinge shaft, the diameter of the hinge shaft can be effectively reduced, thereby reducing the diameter of the hinge hole on the door body, and finally realizing an ultra-thin door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the refrigeration equipment in the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle hinge;

[0022] Figure 3 The invention relates to a method for processing a hinge;

[0023] Figure 4 It is a method for preparing molten metal. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0025] The present invention provides a refrigeration device 100, see Figure 1 , Figure 2 As shown, it includes a box body 1 and a door body 2, and a hinge 3 arranged between the box body 1 and the door body 2, and the door body 2 is pivotally connected to the box body 1 through the hinge 3. It can be understood that the hinge 3 has a circuit inside, so that the box body 1 and the door body 2 are electrically connected, so as to transmit signals.

[0026] Specifically, the hinge 3 includes a hinge plate 31 and a hinge shaft 32 , wherein the hinge plate 31 is connected to the box body 1 , the hinge shaft 32 is connected to the door body 2 , and the door body 2 is provided with a hinge hole that matches the hinge shaft 32 .

[0027] See also Figure 3 As shown, the specific steps of the hinge processing method of the present invention are as follows:

[0028] S1: injecting molten metal into a hinge mold having a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft, so that the molten metal fills a portion of the first mold cavity and a portion of the second mold cavity.

[0029] It can be understood that the first mold cavity and the second mold cavity in the hinge mold are interconnected. After the molten metal flows into the hinge mold, it can flow in the first mold cavity and the second mold cavity, and finally the top of the molten metal in the first mold cavity and the second mold cavity is located at the same horizontal plane.

[0030] S2: Cooling the molten metal in the hinge mold until the molten metal becomes a paste-like molten metal, placing the middle section of the copper bus wire into the hinge mold, and exposing both ends of the copper bus wire to the hinge mold, wherein the routing direction of the copper bus wire in the hinge mold is from the first mold cavity to the second mold cavity.

[0031] Specifically, the length of the copper busbar is greater than the length of the hinge mold, so that the middle section of the copper busbar is placed in the hinge mold, while both ends of the copper busbar are still exposed outside the hinge mold and are not covered by the molten metal in the hinge mold. It can be understood that the middle section of the copper busbar refers to a section of the copper busbar that is not the end section, and is not necessarily located in the middle.

[0032] In the present invention, placing the copper busbar in the hinge mold body is to place the copper busbar on top of the paste metal melt filled in part of the first mold cavity and part of the second mold cavity. Placing the copper busbar in the paste metal melt is easier to ensure the position of the copper busbar in the hinge than placing the copper busbar in the metal melt.

[0033] S3: injecting molten metal into the first mold cavity and the second mold cavity again until the molten metal fills the first mold cavity and the second mold cavity.

[0034] The molten metal covers the top of the copper busbar in the hinge mold, and the molten metal at the upper part of the hinge mold can be tightly combined with the paste-like molten metal at the lower part of the hinge mold, so that the copper busbar in the hinge mold is completely wrapped, but the two ends of the copper busbar are still exposed from the hinge mold, and the two ends of the copper busbar are respectively connected to the box body and the door body to realize signal transmission between the box body and the door body.

[0035] S4: Cooling and molding.

[0036] The final cooling process is to form a hinge with a copper bus bar inside, and both ends of the copper bus bar are exposed on the hinge, so that the hinge does not affect the signal transmission and basic functions. Since the copper bus bar is tightly combined with the hinge shaft, the diameter of the hinge shaft can be effectively reduced, thereby reducing the diameter of the hinge hole on the door body, and finally realizing an ultra-thin door body.

[0037] Further, in step S2, cooling the molten metal in the hinge mold until the molten metal becomes a paste-like molten metal "specifically: cooling the molten metal until the temperature of the molten metal drops to 400° C.-450° C., at which temperature the molten metal can become a paste-like molten metal.

[0038] Furthermore, between step S2 of "exposing both ends of the copper busbar to the hinge mold" and step S3 of "injecting molten metal into the first mold cavity and the second mold cavity again", the processing method further includes:

[0039] S5: Using a pressure roller, the copper busbar in the hinge mold is pressed into the paste-like metal melt.

[0040] The copper busbar in the hinge mold is pressed into the paste-like metal melt by a pressure roller, so that the copper busbar and the paste-like metal melt are more tightly combined. At the same time, the accuracy of the position and routing direction of the copper busbar in the hinge plate and hinge shaft is also guaranteed, thereby avoiding the problem of poor contact of the hinge containing the copper busbar.

[0041] Specifically, the material of the pressing roller can be one of Teflon, graphite, and ceramic, so as to ensure that the pressing roller presses the copper bus wire into the paste-like metal melt without adhering to the metal. In addition, the force of the pressing roller pressing the copper bus wire should be controlled between 100N and 200N to ensure that the copper bus wire is compacted and the problem of deformation of the copper bus wire due to excessive pressure will not occur.

[0042] Furthermore, after step S4 "cooling and forming", the processing method further comprises:

[0043] S6: Perform surface heat treatment on the formed hinge.

[0044] In a specific embodiment of the present invention, the hinge after forming is subjected to aging hardening treatment to maintain the stability of the alloy in the molten state. The aging hardening treatment includes two methods: room temperature aging hardening treatment and artificial aging hardening treatment. Specifically, the surface heat treatment in this embodiment selects artificial aging hardening treatment. The specific parameters can be heating at 180°C for 5 hours, 180°C for 4 hours, or 150°C for 6 hours.

[0045] Furthermore, before the step S1 of "injecting molten metal into a hinge mold having a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft", the processing method further includes:

[0046] S0: Method for preparing molten metal.

[0047] Specifically, see Figure 4 As shown, the method for preparing the molten metal comprises the following steps:

[0048] S01: heating and melting an aluminum alloy containing a first preset ratio of magnesium and a second preset ratio of silicon.

[0049] Specifically, the metal is aluminum alloy, which has the characteristics of low melting point, good fluidity and easy molding. Therefore, aluminum alloy melt is more suitable for casting hinges containing copper busbars. Of course, it is understandable that the choice of metal melt is not limited to this.

[0050] Further, the first preset ratio ranges from 0.2% to 11.5%, and the second preset ratio ranges from 6% to 10%. The ratio is the mass ratio of aluminum, for example, aluminum alloys of grades ZL101, ZL102, ZL301, and A356.2 can be selected.

[0051] The specific heating process of step S01 is: first heat the aluminum alloy containing the first preset ratio of magnesium and the second preset ratio of silicon to 200℃-230℃ and keep it warm for 30min-40min, then heat the aluminum alloy to 400℃-450℃ and keep it warm for 15min-20min, and finally heat the aluminum alloy to 690℃-720℃. By distributing the heating process in multiple stages, the aluminum alloy is given enough time for grain nucleation and growth, while also avoiding the loss of elements. In a specific embodiment of the present invention, step S01 is: place the aluminum alloy with the grade ZL101 in a corundum crucible, first heat it to 200℃ and keep it warm for 30min, then heat it to 400℃ and keep it warm for 15min, and then heat it to 700℃, and the aluminum alloy is melted into aluminum alloy melt.

[0052] S02: Adding a third preset ratio of rare earth elements into the molten aluminum alloy.

[0053] The lack of strength of aluminum alloy can be compensated by the purification and fine crystal effect of rare earth. It is understandable that when aluminum alloy is smelted and cast, a large amount of gas and oxide inclusions (mainly hydrogen, oxygen and nitrogen) will be introduced, causing defects such as pinholes, cracks and inclusions in the casting, reducing the strength of aluminum alloy. The purification effect of rare earth is mainly manifested in significantly reducing the hydrogen content in the aluminum liquid, reducing the pinhole rate and porosity. Rare earth has a large affinity with hydrogen, can absorb and dissolve hydrogen in large quantities, and form stable compounds, and will not gather into bubbles, so that the hydrogen content and porosity of aluminum are significantly reduced. Under normal circumstances, the atomic radius of rare earth is larger than the atomic radius of aluminum, and its properties are relatively active. It is very easy to fill the surface defects of the alloy phase when melted in aluminum liquid, so that the surface tension on the interface between the new and old phases is reduced, and the growth rate of the crystal nucleus is increased; at the same time, it can also form a surface active film between the grains and the molten liquid to prevent the generated grains from growing and refine the alloy structure.

[0054] Furthermore, the rare earth element can be one or more of lanthanum, ytterbium, and cerium. The third preset ratio ranges from 0.5% to 2%, and the ratio is the mass ratio of the molten aluminum alloy melt. Specifically, 0.5%, 1%, 1.5%, and 2% of rare earth elements can be added, for example, 1% ytterbium metal can be added.

[0055] S03: Cooling the aluminum alloy melt until the aluminum alloy melt becomes a paste-like aluminum alloy melt, and stirring the aluminum alloy melt at a preset speed for a preset time.

[0056] The melted aluminum alloy is left to cool in a ventilated place at room temperature until the surface temperature reaches 380℃-450℃. For example, when the surface temperature of the aluminum alloy drops to 400℃, the aluminum alloy melt is in a paste state. Then the stirrer is inserted into the crucible to stir the aluminum alloy melt at a preset speed for a preset time. Specifically, the stirrer can be made of titanium alloy to prevent impurities such as iron and copper from contaminating the aluminum alloy. The specific parameters of "stirring the aluminum alloy melt at a preset speed for a preset time" are: the stirrer stirs the aluminum alloy melt at a speed of 3000r / min for 1min, and then reduces the speed to 1000r / min to stir the aluminum alloy melt for 1min. After stirring for 1min, the viscosity of the aluminum alloy melt is very high. Reducing the speed can break up the dendritic grains of the aluminum alloy while protecting the stirrer from damage, thereby increasing the strength of the formed aluminum alloy by 30%-50%.

[0057] S04: heating again until the aluminum alloy melt becomes aluminum alloy liquid.

[0058] The stirred aluminum alloy melt is placed in a resistance furnace and heated to a temperature of 690°C-720°C until the aluminum alloy melt is melted into aluminum alloy liquid. The aluminum alloy is melted into liquid to facilitate subsequent casting and processing of hinges. In addition, the stirred and broken dendritic grains serve as nucleation centers, and a certain amount of time and temperature are required for the growth of grains.

[0059] Further, after the step S04 of "reheating the aluminum alloy melt to become aluminum alloy liquid", the method for preparing the molten metal specifically includes the following steps:

[0060] S05: Determine the composition of aluminum alloy melt and replenish lost elements.

[0061] Avoid the low content of a certain metal element in the aluminum alloy, which will affect the performance of the aluminum alloy hinge. For example, the metal magnesium element will burn and lose when added, and it is very easy to oxidize. Therefore, it is necessary to measure the magnesium content before the aluminum alloy melt comes out of the furnace to determine whether it needs to be supplemented.

[0062] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0063] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for processing a hinge, characterized in that: The steps include: Injecting molten metal into a hinge mold having a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft, so that the molten metal fills part of the first mold cavity and part of the second mold cavity; The molten metal in the hinge mold is cooled until the molten metal becomes a paste-like molten metal, and the middle section of the copper bus wire is placed in the hinge mold, and both ends of the copper bus wire are exposed outside the hinge mold, wherein the copper bus wire runs in the hinge mold in a direction extending from the first mold cavity to the second mold cavity; Injecting molten metal into the first mold cavity and the second mold cavity again until the molten metal fills the first mold cavity and the second mold cavity; Cooling molding.

2. The hinge processing method according to claim 1, characterized in that: "Cooling the molten metal in the hinge mold until the molten metal becomes a paste-like molten metal" specifically means: cooling the molten metal until the temperature of the molten metal drops to 400°C-450°C.

3. The hinge processing method according to claim 1, characterized in that: Between "exposing both ends of the copper busbar to the hinge mold" and "injecting molten metal into the first mold cavity and the second mold cavity again", the processing method also includes: using a pressure roller to press the copper busbar in the hinge mold into the paste-like metal melt, and the material of the pressure roller can be one of Teflon, graphite, and ceramic.

4. The hinge processing method according to claim 1, characterized in that: After the "cooling and forming" step, the processing method further comprises: performing surface heat treatment on the formed hinge.

5. The hinge processing method according to claim 1, characterized in that: Before the step of "injecting molten metal into a hinge mold having a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft", the processing method further includes: a method for preparing the metal melt.

6. The hinge processing method according to claim 1, characterized in that: The method for preparing the molten metal specifically comprises the following steps: heating and melting an aluminum alloy containing a first preset ratio of magnesium and a second preset ratio of silicon; Adding a third preset ratio of rare earth elements into the molten aluminum alloy; The aluminum alloy melt is cooled until the aluminum alloy melt becomes a paste-like aluminum alloy melt, and the aluminum alloy melt is stirred at a preset speed for a preset time; The aluminum alloy melt is heated again until it becomes aluminum alloy liquid.

7. The hinge processing method according to claim 6, characterized in that: The first preset ratio ranges from 0.2% to 11.5%, and the second preset ratio ranges from 6% to 10%.

8. The method for processing a hinge according to claim 6, characterized in that: The specific heating process of "heating and melting an aluminum alloy containing a first preset ratio of magnesium and a second preset ratio of silicon" is: first heat the aluminum alloy to 200℃-230℃ and keep it warm for 30min-40min, then heat the aluminum alloy to 400℃-450℃ and keep it warm for 15min-20min, and finally heat the aluminum alloy to 690℃-720℃.

9. The method for processing a hinge according to claim 6, characterized in that: The rare earth element is at least one of lanthanum, ytterbium and cerium.

10. The hinge processing method according to claim 6, characterized in that: The third preset ratio ranges from 0.5% to 2%.

11. The method for processing a hinge according to claim 6, characterized in that: The specific process of "cooling the molten aluminum alloy until the molten aluminum alloy becomes a paste-like aluminum alloy melt" is: cooling the molten aluminum alloy to 380℃-450℃.

12. The hinge processing method according to claim 6, characterized in that: "Stirring the aluminum alloy melt at a preset speed for a preset time" specifically means: stirring the aluminum alloy melt at a speed of 3000 r / min for 1 minute, and then stirring the aluminum alloy melt at a speed of 1000 r / min for 1 minute.

13. The method for processing a hinge according to claim 6, characterized in that: After the step of "reheating the aluminum alloy melt to become aluminum alloy liquid", the method for preparing the molten metal specifically includes the following steps: determining the composition of the aluminum alloy liquid and replenishing the lost elements.

14. A refrigeration device, comprising a box body and a door body, characterized in that: The refrigeration device further comprises a hinge arranged between the box body and the door body, and the hinge is processed according to the processing method according to any one of claims 1 to 13.

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