Oil gathering pot production process and oil gathering pot thereof

Abstract

The invention relates to the field of pots, and particularly discloses an oil gathering pot production process and an oil gathering pot thereof. Step 2, fixing the material sheet on a mold of a spinning machine, spinning the material sheet into a concave surface with a concave bottom surface while rotating the material sheet through a spinning process, and manufacturing a pot body; and 3, the pot body obtained after spinning forming is further processed to be made into the pot. When the manufactured pot body is used for daily cooking, oil gathers towards the middle and gathers in the center of the pot and the middle of the bottom of the pot to be in an oily state, food is not prone to being burnt during cooking, the problem of oil leakage during oil gathering and heating is solved, the pot body can be formed at a time, and the manufacturing cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of cookware, and more particularly to a production process of an oil-gathering wok and the oil-gathering wok thereof. Background Art

[0002] The stamping and stretching forming method directly stretches an aluminum plate of a set specification into a cookware blank. Compared with methods such as gravity casting and injection die casting, the usage amount of aluminum alloy materials is saved. Therefore, most manufacturers basically adopt the stamping and stretching forming method. However, the thickness of the bottom and the side wall of the cookware processed by the stamping and stretching forming method is equal, and it is impossible to manufacture a cookware with a thick bottom and mouth and a thin side wall.

[0003] For the existing wok, the inner bottom will arch upward to form a convex arc surface. Usually, it is not obvious, but there will be a gap when measuring the straightness of the bottom with a ruler on the outer bottom of the wok. Because the outer bottom wall of the wok is concave inward, the inner bottom of the wok will naturally bulge outward. In this way, when cooking daily, the oil will flow outwards and will not gather in the center of the wok, but will gather at the edge of the bottom of the wok, and there will be no oil in the middle of the bottom of the wok. It is extremely easy to burn the food during cooking, resulting in problems such as the inability to achieve oil gathering and oil running during heating. It is impossible to form the wok body at one time, and the manufacturing cost is high. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a production process of an oil-gathering wok and the oil-gathering wok thereof. The made wok body can achieve oil gathering, and there will be no problems such as oil running during heating, and the wok body can also be formed at one time.

[0005] To achieve the above object, the present invention provides the following technical solution: A production process of an oil-gathering wok, and the specific steps are as follows:

[0006] Step 1: Perform surface pretreatment on the blank.

[0007] Step 2: Fix the blank on the mold of the spinning machine, and while rotating the blank through the spinning process, spin it into a concave surface with a sunken bottom surface to form the wok body.

[0008] The wok body and the concave surface of the bottom surface of the wok body can be formed at one time, with fast processing speed and high efficiency; moreover, the concave surface of the wok body can play a role in gathering oil, and there will be no problems such as oil running during heating.

[0009] Further, the specific content of Step 2 is: Fix the blank on the mold of the spinning machine, and while rotating the blank through the spinning process, spin it into a concave surface with a sunken bottom surface and a stepped portion located outside the concave surface to form the wok body. The stepped portion can support the bottom surface of the wok body. This method can form the wok body, the concave surface of the bottom surface of the wok body, and the stepped portion at one time, with fast processing speed and high efficiency, and the tightness at the connection is high and the structure is firm.

[0010] Further, during the spinning process in Step 2, control the thickness reduction of the side wall of the pot body. That is, in this way, while the pot body and the concave surface and the stepped part of the bottom surface of the pot body can be formed in one step, the thickness of the side wall of the pot body can also be reduced, and the processing efficiency is high.

[0011] Further, apply a lubricating fluid on the surface of the blank, fix the blank on the mold of the spinning machine, and spin the blank while rotating it through the spinning process to form a concave surface with a sunken bottom surface, thereby making the pot body. The local lubrication is more targeted and only needs to be applied to the necessary parts. At the same time, the usage amount of the lubricating oil is also saved, indirectly reducing the production cost.

[0012] Further, Step 3: Further process the spun pot body to make a cooking utensil.

[0013] Further, the blank selected in Step 1 is a metal circular sheet.

[0014] In addition, the present invention also provides an oil-gathering pot, including a pot body. The periphery of the bottom surface of the pot body is sunken towards the center to form a concave surface. The concave surface is an arc surface, and a stepped part is formed at the periphery of the bottom surface of the concave surface. During daily cooking, the oil will gather towards the middle and accumulate in the center of the pot. There is oil in the middle of the bottom of the pot, and it is not easy to burn the food during cooking, realizing the functions of oil gathering and heating without oil leakage. The stepped part can support the bottom of the pot body, thereby avoiding phenomena such as the outer pot rotating or being uneven.

[0015] Further, the height of the stepped part is greater than or equal to the sunken depth of the concave surface. This ensures the heat conduction area of the bottom surface of the pot body and has good supporting stability.

[0016] Further, the thickness of the bottom surface of the pot body is greater than that of the side surface. This can reduce the degree of deformation of the bottom during the heating process of the product and increase the bottom stability.

[0017] Further, a magnetic conductive sheet or a heat conductive sheet is disposed in a fitting manner below the concave surface. Thereby improving the heat conduction effect of the pot body.

[0018] In summary, the beneficial effects of the present invention are as follows: When the made pot body is used for daily cooking, the oil will gather towards the middle and accumulate in the center of the pot. There is oil in the middle of the bottom of the pot, and it is not easy to burn the food during cooking, realizing the functions of oil gathering and heating without oil leakage. Moreover, the pot body can be formed in one step, greatly reducing the manufacturing cost. Description of the Drawings

[0019] Figure 1 It is a bottom view of Embodiment 1 of the present invention;

[0020] Figure 2 It is a cross-sectional view of Embodiment 1 of the present invention;

[0021] Figure 3For the three-dimensional view of Embodiment 1 of the present invention Figure 1 ;

[0022] Figure 4 For the three-dimensional view of Embodiment 1 of the present invention Figure 2 ;

[0023] Figure 5 For the flowchart of Embodiment 2 of the present invention;

[0024] Wherein, the pot body 1, the concave surface 11, and the stepped portion 12. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1

[0027] As Figures 1-4 shown, a poly-oil pot includes a pot body 1. The outer periphery of the bottom surface of the pot body 1 is recessed towards the center to form a concave surface 11, and the concave surface 11 is an arc surface. A stepped portion 12 is formed on the outer periphery of the bottom surface of the concave surface 11, the stepped portion 12 is in a circular ring shape, and the height of the stepped portion 12 is greater than or equal to the concave depth of the concave surface 11. A magnetic conductive sheet or a heat conductive sheet is disposed below the concave surface 11 in a fitting manner.

[0028] As Figure 2 shown, the thickness of the bottom surface of the pot body 1 is greater than the thickness of the side surface. By making the bottom surface of the pot body 1 into an outwardly arched arc shape, a natural oil gathering effect will be formed on the inner bottom of the pot, thus solving the problem that the oil flows outwards due to the protrusion of the bottom surface of the pot body 1; however, if this is done, problems such as the pot being unstable when placed flat, rotating during use, and being unable to be placed flat will occur. Therefore, in the present invention, a circular stepped portion 12 is made on the outer periphery of the concave surface, so as to avoid phenomena such as rotation and inability to be placed flat caused by the outward arching of the outer bottom of the pot.

[0029] The poly-oil pot of the present invention can be placed stably on a plane to prevent slipping, and can also be used on an induction cooker or a gas stove. It can not only ensure oil gathering but also prevent rotation or inability to be placed flat, thus expanding the scope of use.

[0030] Embodiment 2

[0031] A production process of the poly-oil pot in this embodiment, which is the poly-oil pot of Embodiment 1, is as follows:

[0032] Step 1: Pre-treat the surface of the sheet, which is preferably a circular metal sheet;

[0033] Step 2: It is best to apply lubricating liquid on the surface of the sheet, fix the sheet on the mold of the spinning machine, and use the spinning process to spin the sheet into a concave surface with a concave bottom to make the pot body;

[0034] The pot body is preferably formed by spinning the sheet while spinning it to form a concave bottom surface and a step portion outside the concave surface. The outer arched curved surface portion and the step portion located at the center of the outer pot bottom are simultaneously spun into shape in one step.

[0035] Compared with the direct stretching process, the spinning process can control the wall thickness of the spun pot body, and the wall thickness of the pot body is uneven, for example, the bottom of the pot body is thick and the side wall is thin, while the wall thickness of the pot body produced by the direct stretching process is uniform and cannot meet the processing requirements.

[0036] During this step, the spinning process does not increase the thickness of the disc itself, allowing the bottom and side walls to be formed to a controlled thickness. If the disc is 3mm thick, the bottom wall thickness of the pot embryo remains unchanged at 3mm after spinning, while the side walls can be around 1-2mm (but the side wall thickness is always ≤ the bottom wall thickness; a thicker bottom provides even heating). By reducing the side wall thickness, production and processing costs can also be reduced. When the pot bottom is formed to a 5mm thickness through spinning, deformation of the bottom during heating is reduced, increasing bottom stability.

[0037] The spinning machine is an existing product, for example, patent number CN202020406032.2, knife tightening: adjust the distance of the spinning roller, pressure 70-80cm2, rotation speed: 500-700r / min, preferably 600r / min.

[0038] The processed sheet is placed on top of the pot embryo mold. The clamping mechanism located above the pot embryo mold presses the sheet (to play a positioning role), and the spinning mechanism drives the spinning roller to contact the surface of the sheet to cut until the pot embryo, that is, the pot body, is formed.

[0039] The spinning process of the spinning roller: first, the outer arched curved surface part in the center is spun out, and then a circle of step parts is spun out. The outer arched curved surface part is located inside the circle of step parts. The spinning roller gradually moves downward to spin and cut out the arc-shaped pot wall and finally form a complete pot embryo (when spinning the pot wall, the wall thickness of each part will be controlled according to the set program).

[0040] Further process refinement: When using a large CNC spinning machine, lubricating oil can be applied to the wafer in advance to form an oil film on the surface of the two sliding parts, so that there will be no friction when the machine is running, allowing the machine to run smoothly; at the same time, it can also play a role in cooling during the processing. CNC spinning machines are more suitable for large-sized pots with high precision requirements, ensuring the stability and consistency of the processed products, and can also greatly reduce the scrap rate in processing, improve production efficiency, thereby reducing waste and ensuring product quality.

[0041] When using a small spinning machine for spinning, the rotation speed and feed speed are not fast, so lubricating oil can be added in a targeted manner during the spinning process (at the same time as the spinning roller is about to start) to ensure that from the initial spinning touch to the final spinning completion, sufficient lubricating oil is always between the two sliding parts, making the machine run more smoothly, and local lubrication is more targeted, only needing to be applied to the necessary parts, while also saving the use of lubricating oil and indirectly reducing production costs.

[0042] The lubricating oil is applied at different times: the large spinning machine is applied in advance, and the small spinning machine is applied during the spinning process. Each has its own advantages. By setting up two different spinning machines, it can cope with multiple specifications or different processing requirements, thereby expanding the scope of application of the process flow.

[0043] Step 3: The spun-formed pot body is further processed to form a pot. This means that the spun-formed pot body undergoes subsequent processes such as trimming / flattening, sandblasting, etc. until it is formed into a shaped pot.

[0044] The one-step spinning process is adopted for one-piece molding, and the oil-collecting pot embryo, the step formed on the outer bottom surface of the pot embryo, and the concave surface located on the inner surface of the center are formed at the same time. Compared with the extrusion and casting processes, we use the spinning process to form all of them at one time. The strength and hardness of the pot body after one-step spinning are also higher than those processed in steps, especially the joints; the production and processing technology is simplified to the maximum, which reduces the cost.

[0045] Moreover, the wall thickness of each part such as the bottom wall and side wall as well as the size of the pot embryo can be arbitrarily set, so as to realize independent control of the thickness of the pot body after spinning, which not only improves the processing efficiency but also increases the processing freedom accordingly.

[0046] In order to further expand the scope of use of the cookware of the present invention, a composite bottom plate is provided at the bottom of the pot blank. The composite bottom plate is a magnetic conduction plate or a heat conduction plate. The composite bottom plate is set to be circular for easy processing and installation on the pot body. The installation method of the composite bottom plate can be integral stamping or other fixing methods. The addition of the composite bottom plate in the present invention makes its magnetic conduction and heat transfer efficient, and also reduces the deformation of the pot body when heated or cooled. Due to the setting of the composite bottom plate, the pot body can be used on an induction cooker, and the composite bottom plate body can conduct magnetism and generate heat. The surface area of the composite bottom plate of the present invention is larger, and the magnetic conduction area is also larger, improving the thermal efficiency of the induction cooker for the pot body.

[0047] In addition, rotary presses are classified according to the type of pressure supply: hydraulic models and pneumatic models.

[0048] Spin forming is a processing method in which a flat blank or a preformed blank is fixed to a rotating core mold, a spinning wheel applies pressure to the blank, and the spinning wheel simultaneously makes an axial feed. Through one or multiple processes, various thin-walled hollow rotary products are obtained.

[0049] Spin forming: Fix the circular aluminum plate obtained in Step 2 on the mold of the rotary press. While the circular aluminum plate rotates with the main shaft of the machine tool, use a spinning wheel or a caulking bar to apply pressure to the circular aluminum plate to cause local plastic deformation. At the same time, the drawing, flanging, necking, bulging, and curling processes of the rotating body can be completed to obtain an aluminum pot.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A production process for a poly-oil pan, the specific steps are as follows: Step 1: Perform surface pretreatment on the blank sheet. Step 2: Fix the blank sheet on the mold of the spinning machine, and spin the blank sheet while spinning it into a concave surface with a concave bottom through the spinning process to form the pot body.

2. The production process of the oil-gathering pot according to claim 1, characterized in that: The specific content of Step 2 is: Fix the blank sheet on the mold of the spinning machine, and spin the blank sheet while spinning it into a concave surface with a concave bottom and a stepped portion located outside the concave surface through the spinning process to form the pot body.

3. The production process of the oil-gathering pot according to claim 1, characterized in that: During the spinning process of Step 2, control the thickness reduction of the side wall of the pot body.

4. The production process of the oil-gathering pot according to claim 1, characterized in that: The specific content of Step 2 is: Coat a lubricating liquid on the surface of the blank sheet, fix the blank sheet on the mold of the spinning machine, and spin the blank sheet while spinning it into a concave surface with a concave bottom through the spinning process to form the pot body.

5. The production process of the oil-gathering pot according to claim 1, characterized in that: Step 3: Further process the spun pot body into a cooking utensil.

6. The production process of the oil-gathering pot according to claim 1, characterized in that: The blank sheet selected in Step 1 is a metal circular sheet.

7. A poly-oil pan made by the poly-oil pan production process described in claims 1-6, comprising a pan body (1), characterized in that: The bottom periphery of the pot body (1) is concave towards the center to form a concave surface (11), the concave surface (11) is an arc surface, and a stepped portion (12) is formed at the bottom periphery of the concave surface (11).

8. The oil collecting pan according to claim 7, wherein: The height of the stepped portion is greater than or equal to the concave depth of the concave surface (11).

9. The poly-oil pan according to claim 7, characterized in that: The thickness of the bottom surface of the pot body (1) is greater than the thickness of the side surface.

10. The poly-oil pan according to claim 7, wherein: A magnetic conductive sheet or a heat conductive sheet is disposed in a fitting manner below the concave surface (11).

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