Hinge machining method and refrigeration equipment

Abstract

The invention provides a hinge machining method and refrigeration equipment. After metal powder, a copper bar wire and metal powder are put into a hinge mold of a first mold cavity used for forming a hinge plate and a second mold cavity used for forming a hinge shaft layer by layer, the hinge mold is put on a hydraulic machine for die-casting forming of a hinge with a circuit inside; and the two ends of the copper bar wire are exposed out of the hinge, so that the copper bar wire is tightly combined with the hinge shaft under the condition that signal transmission and basic functions are not influenced by the hinge, the diameter of the hinge shaft can be effectively reduced, 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, the present invention provides a method for processing a hinge, the method comprising: placing metal powder 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 metal powder fills part of the first mold cavity and part of the second mold cavity;

[0006] Put the middle section of the copper busbar into the hinge mold, and expose the two ends of the copper busbar outside the hinge mold, wherein the copper busbar in the hinge mold extends from the first mold cavity to the second mold cavity;

[0007] Putting metal powder into the first mold cavity and the second mold cavity again until the metal powder fills the first mold cavity and the second mold cavity;

[0008] The hinge mold is placed on a hydraulic press for die casting.

[0009] As a further improvement of the present invention, after the step of "placing the hinge mold on a hydraulic press for die-casting", the processing method includes: sintering the formed hinge.

[0010] As a further improvement of the present invention, the specific process of "sintering the formed hinge" is: putting the hinge into a vacuum furnace, first keeping it at 150℃-180℃ for 1 hour, and then raising the temperature to 600℃-650℃ and keeping it at that temperature for 1 hour.

[0011] As a further improvement of the present invention, after the step of "performing sintering treatment", the processing method includes: performing surface treatment on the hinge to make the hinge surface smooth. The surface treatment can be at least one of polishing, flatness grinding, electroplating or oxidation treatment.

[0012] As a further improvement of the present invention, before the step of "putting metal powder 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 metal powder fills part of the first mold cavity and part of the second mold cavity", the processing method also includes: a method for preparing metal powder.

[0013] As a further improvement of the present invention, the preparation method of metal powder specifically includes: putting aluminum powder and copper powder in a preset proportion as basic powder into a ball mill for a preset time; wherein the ratio of the mass of the aluminum powder to the total mass is 95%-96%, and the ratio of the mass of the copper powder to the total mass is 4%-5%.

[0014] As a further improvement of the present invention, the diameters of the aluminum powder and the copper powder are both 1 μm-100 μm.

[0015] As a further improvement of the present invention, "putting aluminum powder and copper powder in a preset ratio as base powder into a ball mill for a preset time" is specifically: putting aluminum powder and copper powder in a preset ratio as base powder into a ball mill, first milling at a speed of 200 r / min for 2 hours, and then milling at a speed of 500 r / min for 2 days.

[0016] 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.

[0017] The processing method of the hinge of the present invention is to place metal powder, copper bus wire and metal powder layer by layer into a hinge mold of a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft, and then place the hinge mold on a hydraulic press to die-cast a hinge containing a circuit inside, and both ends of the copper bus wire are exposed on the hinge, so that the copper bus wire is tightly combined with the hinge shaft without affecting the signal transmission and the use of basic functions of the hinge, which can effectively reduce the diameter of the hinge shaft, 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

[0018] Figure 1 It is a structural schematic diagram of the refrigeration equipment in the present invention;

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle hinge;

[0020] Figure 3 The invention relates to a method for processing a hinge;

[0021] Figure 4 It is a method for preparing metal powder. DETAILED DESCRIPTION

[0022] 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.

[0023] It should be understood that the terms used herein, such as "upper", "lower", "inner", "front", etc., indicating spatial relative positions are used for the purpose of convenience to describe the relationship of one component or feature relative to another component or feature as shown in the drawings. The terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0024] 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.

[0025] 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 .

[0026] See also Figure 3 As shown, the specific steps of the hinge processing method of the present invention are as follows:

[0027] S1: Putting metal powder 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 metal powder fills part of the first mold cavity and part of the second mold cavity;

[0028] S2: placing the middle section of the copper busbar into the hinge mold, and exposing both ends of the copper busbar outside the hinge mold, wherein the copper busbar in the hinge mold extends from the first mold cavity to the second mold cavity;

[0029] S3: adding metal powder into the first mold cavity and the second mold cavity again until the metal powder fills up the first mold cavity and the second mold cavity;

[0030] S4: Place the hinge mold on the hydraulic press for die casting.

[0031] After metal powder, copper bus wire and metal powder are placed layer by layer into the first cavity for forming the hinge plate and the second cavity for forming the hinge shaft, the hinge mold is placed on a hydraulic press to die-cast a hinge containing circuits inside, and both ends of the copper bus wire are exposed on the hinge, so that the hinge can be tightly combined with the copper bus wire and the hinge shaft without affecting signal transmission and basic functions, which can effectively reduce the diameter of the hinge shaft, thereby reducing the diameter of the hinge hole on the door body, and finally realizing an ultra-thin door body.

[0032] It is understood that the first cavity and the second cavity in the hinge mold are interconnected. 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 the two ends of the copper busbar are still exposed to the outside of the hinge mold and are not covered by the metal powder in the hinge mold. It is understood that the middle section of the copper busbar refers to a section of the copper busbar that is not the end, and is not necessarily located in the middle. When the hinge mold is placed on a hydraulic press for die casting, the pressure is between 20T-600T, and the preferred pressure is 100T.

[0033] Further, after the step S4 of "placing the hinge mold on a hydraulic press for die-casting", the processing method includes:

[0034] S5: Sintering the formed hinge.

[0035] The specific process of "sintering the formed hinge" is: put the hinge into a vacuum furnace, first keep it at 150℃-180℃ for 1 hour, then heat it to 600℃-650℃ and keep it for 1 hour.

[0036] By placing the hinge in a vacuum furnace, first keeping it at 150℃-180℃ for 1h to dry the moisture in the hinge, and then heating it to 600℃-650℃ for 1h, the impurities or their oxides in the hinge are effectively removed, which plays a role in purifying the material. In addition, vacuum can improve the wettability of liquid phase sintering, which is beneficial to the shrinkage during the sintering process and improve the organizational structure of the alloy. At the same time, it reduces the contamination of the product by harmful components in the atmosphere (water, oxygen, nitrogen, etc.).

[0037] Furthermore, after the step S5 of "sintering the formed hinge", the processing method includes:

[0038] S6: Surface treatment is performed on the hinge to make the hinge surface smooth.

[0039] Specifically, the surface treatment may be at least one of polishing, flatness grinding, electroplating or oxidation treatment to improve the smoothness of the hinge surface so that the hinge after surface treatment can be used directly.

[0040] Furthermore, before step S1 of "putting metal powder 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 metal powder fills part of the first mold cavity and part of the second mold cavity", the processing method further includes:

[0041] S0: Preparation method of metal powder.

[0042] Furthermore, the preparation method of the metal powder specifically includes: putting aluminum powder and copper powder in a preset ratio as basic powder into a ball mill for a preset time; wherein the ratio of the mass of the aluminum powder to the total mass is 95%-96%, and the ratio of the mass of the copper powder to the total mass is 4%-5%.

[0043] In the present invention, the diameters of the aluminum powder and the copper powder are both 1 μm to 100 μm, preferably 3 μm in diameter.

[0044] Furthermore, “putting aluminum powder and copper powder in a preset ratio as base powder into a ball mill for a preset time” specifically means: putting aluminum powder and copper powder in a preset ratio as base powder into a ball mill, first milling at a speed of 200 r / min for 2 hours, and then milling at a speed of 500 r / min for 2 days.

[0045] In a specific embodiment of the present invention, refer to Figure 4 As shown, the preparation method of the metal powder is specifically as follows:

[0046] S01: Mix 240 g of copper powder with a diameter of 3 μm and 10 g of copper powder with a diameter of 3 μm;

[0047] S02: The mixed aluminum powder and copper powder were put into a ball mill and ball-milled at a speed of 200 r / min for 2 h, and then ball-milled at a speed of 500 r / min for 2 days.

[0048] The hinge surface is impacted by a ball mill to make the hinge surface more tightly bonded. The magic ball in the ball mill is 440C martensitic stainless steel, which has extremely high hardness and high high-temperature dimensional stability, and prevents iron impurities from entering. It can be understood that the high-speed collision and violent friction between the grinding balls and the grinding balls and the grinding jars during the high-energy ball milling process cause the aluminum powder between them to undergo large plastic deformation during repeated impact, shearing and compression, and the powder particles are broken and cold welded. At the same time, high-density dislocations are formed inside the metal powder. These high-density dislocations gradually become polygonal. As the plastic deformation of the powder increases, the polygonal dislocations first entangle and gradually form dislocation cells. When the number of dislocation cells reaches a certain level, the dislocation cell walls begin to transform into grain boundaries and gradually form nanocrystals. During the high-energy ball milling process, the collision will generate a large amount of heat, causing the dislocations to be annihilated while increasing in value. When the value-added and annihilation reach a dynamic balance, the size of the nanocrystals in the powder particles also tends to be stable, that is, it reaches the limit size.

[0049] Of course, it is understandable that the surface of the metal powder can also be modified by a grinder instead of a ball mill.

[0050] The processing method of the hinge of the present invention is to place metal powder, copper bus wire and metal powder layer by layer into a hinge mold of a first mold cavity for forming a hinge plate and a second mold cavity for forming a hinge shaft, and then place the hinge mold on a hydraulic press to die-cast a hinge containing a circuit inside, and both ends of the copper bus wire are exposed on the hinge, so that the copper bus wire is tightly combined with the hinge shaft without affecting the signal transmission and the use of basic functions of the hinge, which can effectively reduce the diameter of the hinge shaft, thereby reducing the diameter of the hinge hole on the door body, and finally realizing an ultra-thin door body.

[0051] 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.

[0052] 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 processing method comprises: Putting metal powder 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 metal powder fills part of the first mold cavity and part of the second mold cavity; Put the middle section of the copper busbar into the hinge mold, and expose the two ends of the copper busbar outside the hinge mold, wherein the copper busbar in the hinge mold extends from the first mold cavity to the second mold cavity; Putting metal powder into the first mold cavity and the second mold cavity again until the metal powder fills the first mold cavity and the second mold cavity; The hinge mold is placed on a hydraulic press for die casting.

2. The hinge processing method according to claim 1, characterized in that: After the step of "placing the hinge mold on a hydraulic press for die-casting", the processing method includes: sintering the formed hinge.

3. The hinge processing method according to claim 2, characterized in that: The specific process of "sintering the formed hinge" is: put the hinge into a vacuum furnace, first keep it at 150℃-180℃ for 1 hour, then heat it to 600℃-650℃ and keep it for 1 hour.

4. The hinge processing method according to claim 2, characterized in that: After the step of "sintering the formed hinge", the processing method includes: performing surface treatment on the hinge to make the hinge surface smooth.

5. The hinge processing method according to claim 4, characterized in that: The surface treatment may be at least one of polishing, flatness grinding, electroplating or oxidation treatment.

6. The hinge processing method according to claim 1, characterized in that: Before the step of "placing metal powder 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 metal powder fills part of the first mold cavity and part of the second mold cavity", the processing method also includes: a method for preparing metal powder.

7. The hinge processing method according to claim 1, characterized in that: The preparation method of the metal powder specifically includes: Aluminum powder and copper powder in a preset ratio are put into a ball mill as basic powder for a preset time; wherein the ratio of the mass of the aluminum powder to the total mass is 95%-96%, and the ratio of the mass of the copper powder to the total mass is 4%-5%.

8. The hinge processing method according to claim 7, characterized in that: The diameters of the aluminum powder and the copper powder are both 1 μm-100 μm.

9. The hinge processing method according to claim 7, characterized in that: "Put the preset proportion of aluminum powder and copper powder as base powder into the ball mill for a preset time" specifically means: put the preset proportion of aluminum powder and copper powder as base powder into the ball mill, first mill at a speed of 200r / min for 2h, and then mill at a speed of 500r / min for 2 days.

10. 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 9.

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