Non-stick pan manufacturing process

Abstract

The invention discloses a non-stick pan manufacturing process which comprises the following steps: an aluminum sheet compounding step: compounding a layer of aluminum wafer at the bottom of a circular stainless steel plate to form a first pan blank; a porous wafer manufacturing step: punching to manufacture a porous wafer, the hole site of the porous wafer is provided with an annular convex edge, the annular convex edge protrudes towards one side of the porous wafer, and a plurality of annular convex edges are cut off, so that one annular convex edge is provided with at least two vertical insert parts; a mold pressing step: pressing the porous wafer to the aluminum wafer of the first pot blank to form a second pot blank; an etching step: carrying out screen printing and etching to form a third pot blank; and a pot body forming step: stamping the third pot blank into a pot body, forming the inner surface of the pot body by the circular stainless steel plate, and forming the outer surface of the pot bottom of the pot body by the aluminum wafer and the porous wafer. According to the non-stick pan manufacturing process, the porous wafer can be reliably fixed, loosening and falling are delayed, and the situation that the use experience is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of a method for manufacturing a cookware, and in particular to a process for manufacturing a non-stick pan. Background Art

[0002] An existing cookware comprises a cooker body, the bottom or outer surface of the cooker body is covered with a layer of aluminum, and also comprises a porous disc, the disc has holes protruding toward the aluminum layer, and the holes are made by punching process.

[0003] During manufacturing, the porous disc and the aluminum layer are pressed against each other so that the porous disc and the pot body are fixed together.

[0004] However, in daily use, the porous disc and the pot body will be constantly heated. Since the porous disc is made of iron, the thermal expansion properties of iron and aluminum are very different, the thermal expansion coefficient of iron is 12.2, and the thermal expansion coefficient of aluminum is 23.2. Therefore, after the pot has been used for a period of time, the porous disc is easy to loosen or even fall off, affecting the user experience. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a non-stick pan manufacturing process, which can reliably fix the porous disc, delay loosening and falling off, and avoid affecting the user experience.

[0006] A non-stick pan manufacturing process according to an embodiment of the present invention includes: an aluminum sheet compounding step, compounding a layer of aluminum round sheets on the bottom of the circular stainless steel plate to form a first pot blank, wherein the diameter of the aluminum round sheet is less than or equal to the diameter of the circular stainless steel plate; a porous disc manufacturing step, wherein the porous disc is manufactured by punching, wherein the holes of the porous disc have an annular convex edge, the annular convex edge protrudes toward one side of the porous disc, and a plurality of the annular convex edges are cut off so that one annular convex edge has at least two upright inserting portions; A molding step of pressing the porous disc toward the aluminum disc of the first pot blank so that the annular convex edge and the insert portion of the porous disc are pressed into the aluminum disc to form a second pot blank; an etching step of screen printing and etching the circular stainless steel plate of the second pot blank so that a concave-convex pattern is formed on the surface of the circular stainless steel plate to form a third pot blank; The pot body forming step is to stamp the third pot blank into a pot body, the circular stainless steel plate forms the inner surface of the pot body, and the aluminum disc and the porous disc form the outer surface of the bottom of the pot body.

[0007] A non-stick pan manufacturing process according to an embodiment of the present invention has at least the following beneficial effects: The present invention arranges an aluminum sheet compounding step, so that, on the one hand, the stainless steel round sheet forms the inner side and the outer side wall of the pot, which has high strength, can withstand the impact of the spatula during cooking and the external touch, and is durable. On the other hand, the aluminum round sheet forms the bottom of the pot, which can improve thermal conductivity and thermal conductivity efficiency.

[0008] By setting up a porous disc manufacturing step, the present invention can form an annular convex edge on the porous disc by stamping, thereby increasing the connection strength between the porous disc and the aluminum disc, facilitating the porous disc and the aluminum disc to be connected together by extrusion, thereby reducing the manufacturing cost and difficulty. At the same time, the porous disc can be used to support the cookware, avoiding the aluminum disc from directly contacting the cookware or the tabletop, thereby reducing the wear of the aluminum disc.

[0009] In some specially made cookware, the porous disc can be made to have magnetic conductivity, so that the cookware can be used in an induction cooker, increasing the number of ways of use and facilitating universal use.

[0010] The present invention cuts off several of the multiple annular ridges so that one annular ridge has at least two upright insert portions. Therefore, when the porous disc and the aluminum disc are squeezed together, the two insert portions are easily tilted relative to the annular ridge. Furthermore, there is a difference between the situation in which the insert portion is inserted into the aluminum disc and the situation in which the annular ridge is inserted into the aluminum disc. The insert portion is easily inserted into the aluminum boss surrounded by the annular ridge. Therefore, when the cookware is heated or cooled, the force exerted by the thermal deformation of the aluminum disc on the insert portion is different from the force exerted by the annular ridge. Furthermore, at least the insert portion can make the porous disc close to the aluminum disc, avoid separation of the porous disc from the aluminum disc, avoid loosening or falling off of the porous disc due to repeated heating and cooling during daily use, extend the service life of the cookware, and improve the user experience.

[0011] The present invention also forms a concave-convex texture on the inner surface of the cookware by arranging an etching step, thereby increasing the heat transfer area of ​​the cookware and improving the heat transfer efficiency, so as to cook food faster and shorten the cooking time.

[0012] The present invention also facilitates the formation of the third flat pot blank into a container by providing a pot body forming step to meet the need of accommodating food.

[0013] At the same time, compared with the prior art, the present invention does not need to pre-process the grooves matching the annular convex edges and the bosses surrounded by the grooves on the aluminum discs. Therefore, the processing of the aluminum discs can be reduced and the manufacturing costs can be reduced. At the same time, the design can reduce the thickness of the aluminum discs, reduce the changes caused by the thermal expansion of the aluminum discs, and reduce the probability of loosening of the porous discs.

[0014] At the same time, compared with the prior art, the present invention cuts several of the multiple annular flanges so that one annular flange forms at least two insert parts, which requires less modification to the original production process. In particular, it minimizes the improvement of the mold used to form the annular flange, making it convenient for other products to use it.

[0015] At the same time, compared with the prior art, in the molding step, the present invention utilizes the inclination of the insert portion, so that when the insert portion is inserted into the aluminum disc, the insert portion changes from a state perpendicular to the porous disc to an inclined state, forming an inverted state, which increases the difficulty of separating the porous disc from the aluminum disc and is not easy to loosen.

[0016] According to a non-stick pan manufacturing process of an embodiment of the present invention, the annular convex edge includes a circular hole-shaped convex ring, and the two inserting pieces formed by the circular hole-shaped convex ring are arranged with different sizes.

[0017] Advantageously, the present invention sets a difference in the size of the two insert portions formed by the circular hole-shaped convex ring, and also sets a difference in the strength of the two insert portions. Therefore, when the porous disc and the aluminum disc are squeezed together, under the action of the aluminum disc, the inclination of one insert portion is different from the inclination of the other insert portion, that is, the two insert portions are embedded in the aluminum disc left and right instead of being inserted vertically into the aluminum disc, and one insert portion is inserted into the aluminum disc more obliquely, forming a state in which the aluminum disc wraps the insert portion, so that the aluminum patch fits tightly with the porous disc and is not easy to loosen and separate.

[0018] At the same time, the smaller insert portion is easier to tilt and fall, the degree of insertion into the aluminum disc is more obvious, and the anti-loosening and anti-falling capabilities are higher.

[0019] At the same time, the stamping fillet produced by forming the annular convex edge will make the insert portion have sufficient strength, so that the insert portion can be inserted into the entity of the aluminum disc instead of being pressed flat by the aluminum disc.

[0020] According to a non-stick pan manufacturing process of an embodiment of the present invention, the annular convex edge includes a waist-hole-shaped convex ring, and both sides of the waist-hole-shaped convex ring in the width direction are used to form the insert portion.

[0021] The benefit is that: the present invention forms an insert portion on the waist-shaped convex ring. On the one hand, the insert portion has the ability to deform, so as to meet the purpose of being inserted into the aluminum boss to prevent loosening. On the other hand, the strength of the insert portion itself is improved, and the risk of bending of the insert portion itself is reduced, thereby ensuring that the insert portion is inserted into the entity of the aluminum disc rather than being pressed flat by the aluminum disc.

[0022] According to a non-stick pan manufacturing process of an embodiment of the present invention, in the porous disc manufacturing step, it also includes punching the porous disc into a plurality of half discs, the plurality of half discs are arranged radially from the center, the plurality of half discs are kept connected on one side close to the center of the porous disc, and each half disc is provided with at least one pair of the insert portions.

[0023] Advantageously, the present invention divides a porous disc into several pieces, thereby splitting a single porous disc into multiple pieces, reducing the pulling between the annular flanges, and in particular, reducing the pulling between the two insert portions of an annular flange on one half-piece and the two insert portions of an annular flange on the other half-piece along the circumference of the porous disc, thereby reducing the risk of loosening.

[0024] According to a non-stick pan manufacturing process of an embodiment of the present invention, the junction of two adjacent half sheets includes two radially extending edges and a chord edge connecting the two radially extending edges.

[0025] Advantageously, the present invention eliminates the radially extending boundary edge of the porous disc by making the boundary between the two adjacent half-sheets include two radially extending edges and a chord edge connecting the two radially extending edges, thereby reducing the conduction of internal stress in the radial direction of the porous disc, reducing the pulling of the insert portion in the radial direction of the porous disc, reducing the impact on the insert portion, and at the same time, making it easier for the cooker to support the pot and avoid being stuck between the two half-sheets.

[0026] According to a non-stick pan manufacturing process of an embodiment of the present invention, the edge of the porous disc is used to form a bottom fillet of the pan body, and the bottom fillet connects the side wall and the bottom wall of the pan body.

[0027] Advantageously, the porous disc is formed with a bottom fillet in the present invention, so that after the cookware is manufactured, the porous disc is in a three-dimensional shape, and the connection between the porous disc and the aluminum disc can not only rely on the insert portion and the annular convex edge, but also utilize the porous disc to wrap the aluminum disc to form a snap connection, such as the annular convex edge snapping into the aluminum disc, to limit the component force along the up and down direction of the cookware, thereby improving the connection strength between the porous disc and the aluminum disc.

[0028] According to a non-stick pan manufacturing process of an embodiment of the present invention, a roughening step is provided after the pan body forming step, and the roughening step uses a slotted jaw to punch out the aluminum material between the two insert portions.

[0029] Advantageously, the present invention can squeeze the aluminum material remaining between the two inserting pieces by providing a roughening step, so that the aluminum material covers the inserting pieces to a greater extent, and the aluminum patch fits tightly with the porous disc and is not easy to loosen or separate.

[0030] According to a non-stick pan manufacturing process of an embodiment of the present invention, the slotted jaws are provided with an imprint on the aluminum material, and the distances between the imprint and the two inserting pieces are unequal.

[0031] Advantageously, the present invention sets the distances between the stamping and the two insert parts at different distances, thereby allowing the aluminum material to extend toward the root of one insert part. This can also overcome the problem that the aluminum material remaining between the two insert parts is relatively limited and has limited extension capacity, thereby ensuring that the aluminum material cooperates better with one insert part and has a more obvious anti-loosening effect. At the same time, it is beneficial to reduce the size of the stamping and reduce the difficulty and cost of stamping molding.

[0032] According to a non-stick pan manufacturing process of an embodiment of the present invention, a step recess is provided on the side of the porous disc facing away from the annular convex edge, and after the pan body forming step, an aluminum pad bonding step is provided, in which an aluminum pad is bonded to the step recess and the aluminum pad is made flush with the end face of the porous disc.

[0033] Advantageously, the present invention improves the forming of the annular convex edge, thereby facilitating the compounding of an additional aluminum pad on the aluminum disc. Therefore, the cooperation between the aluminum pad and the step recess can enhance the anti-loosening capability, avoid thickening the aluminum disc as a whole, and reduce the difficulty of molding.

[0034] According to a non-stick pan manufacturing process of an embodiment of the present invention, in the molding step, an aluminum ring is further provided, and the aluminum ring squeezes the edge of the porous disc and connects the aluminum disc.

[0035] Advantageously, the present invention covers the edge of the porous disc by providing an aluminum ring, so that the aluminum material has a smooth transition, reduces the impact of bumps on the porous disc, and reduces the probability of the porous disc loosening.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 This is a workflow diagram for the non-stick pan manufacturing process; Figure 2 for Figure 1A schematic diagram of the partial structure of the first type of pot produced by the non-stick pot manufacturing process; Figure 3 for Figure 2 A schematic diagram of the structure of a circular hole-shaped convex ring of a porous disc; Figure 4 for Figure 2 A schematic diagram of the structure of the waist-shaped convex ring of the porous disc; Figure 5 for Figure 2 A schematic diagram of the structure of an improved solution for a porous disc; Figure 6 for Figure 2 A schematic structural diagram of another improved solution of a porous disc; Figure 7 for Figure 2 A schematic structural diagram of a roughening treatment of the insert portion of a porous disc; Figure 8 for Figure 2 A schematic diagram of the structure of the aluminum pad composite treatment of the insert portion of the porous disc; Fig. 9 for Figure 2 Schematic diagram of the structure of the aluminum ring composite treatment of the insert part of the porous disc.

[0039] Figure numerals: 100 - circular stainless steel plate, 110 - aluminum disc, 120 - porous disc, 130 - annular convex edge, 140 - insert portion, 150 - circular hole convex ring, 160 - waist hole convex ring, 170 - half sheet, 180 - radial extension edge, 190 - chord edge, 200 - bottom fillet, 210 - stamping, 220 - step recess, 221 - aluminum pad, 230 - aluminum ring. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it is necessary to understand that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of first and second, this is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation, connection and connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] A non-stick pan manufacturing process according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0045] Reference Figure 1 The present invention aims to provide an embodiment of a non-stick pan manufacturing process.

[0046] In this embodiment, a non-stick pan manufacturing process mainly includes an aluminum sheet compounding step S1, a porous disc manufacturing step S2, a molding step S3, an etching step S4 and a pan body forming step S5.

[0047] In addition, the non-stick pan manufacturing process may also include the step of applying a non-stick coating, etc. However, since this embodiment does not involve related improvements, a detailed description is not given. For details, please refer to the patent document entitled "A non-stick pan manufacturing process and a non-stick pan" and publication number CN117696405A.

[0048] In the aluminum sheet compounding step S1, the circular stainless steel plate 100 and the aluminum disc 110 are first punched or cut out respectively, and then, by mutual extrusion and heating, a layer of aluminum disc 110 is compounded on the bottom of the circular stainless steel plate 100 to form a first pot blank.

[0049] In some specific embodiments of the present invention, the diameter of the aluminum disc 110 can be less than or equal to the diameter of the circular stainless steel plate 100. Therefore, in some embodiments, the aluminum disc 110 only forms the bottom of the pot, while in other embodiments, the aluminum disc 110 can form the bottom of the pot and the corners of the bottom of the pot. In another embodiment, the aluminum disc 110 makes the pot have an all-aluminum appearance, similar to an aluminum pot, but reduces the contact between food and aluminum, and has the advantages of both aluminum pots and iron pots.

[0050] In some specific embodiments of the present invention, after the circular stainless steel plate 100 and the aluminum disc 110 are stamped or cut, the circular stainless steel plate 100 and the aluminum disc 110 can be cleaned to avoid the presence of oil stains on the contact surfaces of the circular stainless steel plate 100 and the aluminum disc 110, thereby improving the composite quality and making the circular stainless steel plate 100 and the aluminum disc 110 difficult to separate.

[0051] When the aluminum sheet compounding step S1 is being performed, the porous disc manufacturing step S2 can be performed simultaneously to achieve parallel manufacturing, reduce waiting time, and improve manufacturing efficiency.

[0052] In some specific embodiments of the present invention, the porous disc 120 may be manufactured by continuous stamping of a steel strip.

[0053] In some specific embodiments of the present invention, a disc may be punched out first, and then a plurality of holes may be punched out on the disc, thereby reducing the difficulty of mold design and, at the same time, reducing equipment investment.

[0054] During the punching process, in addition to punching out the holes, the holes are also provided with an annular convex edge 130 , that is, the holes of the porous disc 120 have an annular convex edge 130 , and the annular convex edge 130 protrudes toward one side of the porous disc 120 .

[0055] In some specific embodiments of the present invention, the root of the annular flange 130 may have a stamped fillet to facilitate stamping of the annular flange 130 .

[0056] Therefore, in most cases, the root of the outer side of the annular ridge 130 forms an inner fillet. When the pot is used for cooking, the aluminum disc 110 collides, and the aluminum material squeezes the outer surface of the annular ridge 130 to produce a demolding effect, making it easy to separate the porous disc 120 from the aluminum disc 110.

[0057] Reference Figure 2 To solve this problem, in this embodiment, some of the multiple annular flanges 130 are cut off, so that one annular flange 130 has at least two upright inserting portions 140 .

[0058] In some specific embodiments of the present invention, the cut annular protrusions 130 can be evenly distributed along the circumference of the porous disc 120, so that the porous disc 120 is relaxed at multiple locations to reduce local activities.

[0059] After the first pot blank and the porous disc 120 are made, a molding step S3 can be performed. In the molding step S3, the porous disc 120 is pressed against the aluminum disc 110 of the first pot blank so that the annular ridge 130 and the insert portion 140 of the porous disc 120 are pressed into the aluminum disc 110 to form a second pot blank.

[0060] In some specific embodiments of the present invention, the molding step S3 can be cold pressing or hot pressing. Cold pressing can reduce the impact of material shrinkage, while hot pressing can soften the aluminum disc 110, reducing the difficulty of pressing the insert part into the aluminum disc 110. At the same time, it is also beneficial to eliminate the elasticity of the insert part 140, reduce rebound, and facilitate the porous disc 120 to fit closely against the annular ridge 130.

[0061] Afterwards, an etching step S4 may be performed, in which the circular stainless steel plate 100 of the second pot blank is screen printed and etched, so that a concave-convex pattern is formed on the surface of the circular stainless steel plate 100 to form a third pot blank.

[0062] For the etching step S4, reference may be made to the method for manufacturing a cookware having a concave-convex structure, and no further description is given.

[0063] After that, the pot body forming step S5 can be performed, in which the third pot blank is punched into a pot body, the circular stainless steel plate 100 forms the inner surface of the pot body, and the aluminum disc 110 and the porous disc 120 form the outer surface of the bottom of the pot body.

[0064] In summary, the present invention sets an aluminum sheet composite step, so that, on the one hand, the stainless steel round sheet forms the inner side and the outer side wall of the cookware, which has high strength and can withstand the impact of the spatula during cooking and external touch, and is durable. On the other hand, the aluminum round sheet 110 forms the bottom of the cookware, which can improve thermal conductivity and thermal conductivity efficiency.

[0065] By setting up a porous disc manufacturing step, the present invention can form an annular convex edge 130 on the porous disc 120 by stamping, thereby increasing the connection strength between the porous disc 120 and the aluminum disc 110, facilitating the porous disc 120 and the aluminum disc 110 to be connected together by extrusion, thereby reducing the manufacturing cost and difficulty. At the same time, the porous disc 120 can be used to support the cookware, avoiding the aluminum disc 110 from directly contacting the cookware or the tabletop, thereby reducing the wear of the aluminum disc 110.

[0066] In some specially made cookware, the porous disc 120 can also have magnetic conductivity, so that the cookware can be used in an induction cooker, increasing the number of usages and facilitating universal use.

[0067] The present invention cuts off several of the plurality of annular ridges 130 so that one annular ridge 130 has at least two upright inserting pieces 140. Therefore, when the porous disc 120 and the aluminum disc 110 are pressed together, the two inserting pieces 140 are easily inclined relative to the annular ridge 130. Therefore, there is a difference between the insertion of the inserting piece 140 into the aluminum disc 110 and the insertion of the annular ridge 130 into the aluminum disc 110. The inserting piece 140 is easily inserted into the annular ridge 130. Therefore, when the cookware is heated or cooled, the thermal deformation of the aluminum disc 110 exerts a force on the insert portion 140 that is different from that on the annular ridge 130. As a result, at least the insert portion 140 can make the porous disc 120 close to the aluminum disc 110, thereby preventing the porous disc 120 from being separated from the aluminum disc 110 and preventing the porous disc 120 from being loosened or falling off due to repeated heating and cooling during daily use, thereby extending the service life of the cookware and improving the user experience.

[0068] The present invention also forms a concave-convex texture on the inner surface of the cookware by arranging an etching step, thereby increasing the heat transfer area of ​​the cookware and improving the heat transfer efficiency, so as to cook food faster and shorten the cooking time.

[0069] The present invention also facilitates the formation of the third flat pot blank into a container by providing a pot body forming step to meet the need of accommodating food.

[0070] At the same time, compared with the prior art, the present invention does not need to pre-process the groove matching the annular ridge 130 and the boss surrounded by the groove at the aluminum disc 110, thereby reducing the processing of the aluminum disc 110 and reducing the manufacturing cost. At the same time, in terms of design, the thickness of the aluminum disc 110 can be reduced, the changes caused by the thermal expansion of the aluminum disc 110 can be reduced, and the probability of loosening of the porous disc 120 can be reduced.

[0071] At the same time, compared with the prior art, the present invention cuts several of the multiple annular flanges 130 so that one annular flange 130 forms at least two insert portions 140, which requires less modification to the original production process. In particular, it minimizes the modification to the mold used to form the annular flange 130, making it convenient for other products to use it.

[0072] At the same time, compared with the prior art, in the molding step, the present invention utilizes the inclination of the insert portion 140, so that when the insert portion 140 is inserted into the aluminum disc 110, the insert portion 140 changes from a state perpendicular to the porous disc 120 to an inclined state, forming an inverted state, which increases the difficulty of separating the porous disc 120 from the aluminum disc 110 and is not easy to loosen.

[0073] Reference Figure 3In some specific embodiments of the present invention, the annular convex edge 130 may include a circular hole-shaped convex ring 150 , and the two inserting pieces 140 formed by the circular hole-shaped convex ring 150 are arranged with different sizes.

[0074] It is easy to understand that in this embodiment, the two insert portions 140 formed by the circular hole-shaped convex ring 150 are set to have different sizes, and the strength of the two insert portions 140 is also set to have different strengths. Therefore, when the porous disc 120 and the aluminum disc 110 are squeezed together, under the action of the aluminum disc 110, the inclination of one insert portion 140 is different from the inclination degree of the other insert portion 140, that is, the two insert portions 140 are embedded in the aluminum disc 110 left and right instead of being inserted vertically into the aluminum disc 110, and one insert portion 140 is inserted into the aluminum disc 110 at a more inclined state, forming a state in which the aluminum disc 110 wraps the insert portion 140, so that the aluminum patch fits tightly with the porous disc 120 and is not easy to loosen and separate.

[0075] At the same time, the smaller inserting piece 140 is easier to tilt and fall, and the degree of insertion into the aluminum disc 110 is more obvious, and the anti-loosening and anti-falling capabilities are higher.

[0076] At the same time, the stamping fillet produced by forming the annular convex edge 130 will make the insert portion 140 have sufficient strength, so that the insert portion 140 can be inserted into the body of the aluminum disc 110 instead of being pressed flat by the aluminum disc 110 .

[0077] Reference Figure 4 In some specific embodiments of the present invention, the annular convex edge 130 may include a waist-shaped convex ring 160 , and both sides of the waist-shaped convex ring 160 in the width direction are used to form the insert portion 140 .

[0078] It is easy to understand that in this embodiment, by forming the insert portion 140 on the waist-shaped convex ring 160, on the one hand, the insert portion 140 has the ability to deform, so as to meet the purpose of being inserted into the aluminum boss to prevent loosening. On the other hand, the strength of the insert portion 140 itself is improved, and the risk of bending of the insert portion 140 itself is reduced, thereby ensuring that the insert portion 140 is inserted into the entity of the aluminum disc 110 rather than being pressed flat by the aluminum disc 110.

[0079] Reference Figure 5 In some specific embodiments of the present invention, the porous disc manufacturing step may further include punching the porous disc 120 into a plurality of half-sheets 170, wherein the plurality of half-sheets 170 are arranged radially from the center, and the plurality of half-sheets 170 are connected on one side close to the center of the porous disc 120, and each half-sheet 170 is provided with at least one pair of insert portions 140.

[0080] It is easy to understand that in this embodiment, the porous disc 120 is cut into several pieces, thereby splitting a single porous disc 120 into multiple pieces, reducing the entanglement between the annular flanges 130, especially reducing the pulling between the two insert portions 140 of an annular flange 130 on one half-piece 170 and the two insert portions 140 of an annular flange 130 on the other half-piece 170 along the circumferential direction of the porous disc 120, thereby reducing the risk of loosening.

[0081] In some specific embodiments of the present invention, the junction of two adjacent half sheets 170 may include two radially extending edges 180 and a chord edge 190 connecting the two radially extending edges 180 .

[0082] It is easy to understand that, in this embodiment, the junction of two adjacent half-pieces 170 includes two radially extending edges 180 and a chord edge 190 connecting the two radially extending edges 180, and the junction edge extending radially along the porous disc 120 is eliminated, thereby reducing the internal stress conduction in the radial direction of the porous disc 120, reducing the pulling on the insert portion 140 along the radial direction of the porous disc 120, reducing the impact on the insert portion 140, and at the same time, it is convenient for the cooker to support the pot and avoid being stuck between the two half-pieces 170.

[0083] Reference Figure 6 In some specific embodiments of the present invention, the edge of the porous disc 120 can be used to form a bottom fillet 200 of the pot body, and the bottom fillet 200 connects the side wall and the bottom wall of the pot body.

[0084] It is easy to understand that in this embodiment, the porous disc 120 is formed with a bottom fillet 200. Therefore, after the manufacture of the cookware is completed, the porous disc 120 is three-dimensional. The connection between the porous disc 120 and the aluminum disc 110 can not only rely on the insert portion 140 and the annular flange 130, but also utilize the porous disc 120 to wrap the aluminum disc 110 to form a snap connection, such as the annular flange 130 is snapped into the aluminum disc 110, so as to limit the component force along the up and down direction of the cookware, thereby improving the connection strength between the porous disc 120 and the aluminum disc 110.

[0085] Reference Figure 1 and Figure 7 In some specific embodiments of the present invention, after the pot body forming step S5, a roughening step S6 is provided, and the roughening step S6 uses a slotted jaw to punch the aluminum material between the two inserting pieces 140.

[0086] It is easy to understand that, by providing a roughening step, this embodiment can squeeze the aluminum material remaining between the two insert parts 140 so that the aluminum material covers the insert parts 140 to a greater extent, so that the aluminum patch fits tightly with the porous disc 120 and is not easy to loosen and separate.

[0087] In some specific embodiments of the present invention, the slotted jaws may be provided with an embossing 210 on the aluminum material, and the distances between the embossing 210 and the two inserting pieces 140 are set at different distances.

[0088] It is easy to understand that this embodiment sets the distances between the stamping 210 and the two insert parts 140 to be unequal, so that the aluminum material extends toward the root of one insert part 140. Therefore, it can also overcome the limited aluminum material remaining between the two insert parts 140 and the limited extension ability, thereby ensuring that the aluminum material and one insert part 140 cooperate better and the anti-loosening effect is more obvious. At the same time, it is beneficial to reduce the size of the stamping 210 and reduce the difficulty and cost of molding the stamping 210.

[0089] Reference Figure 8 In some specific embodiments of the present invention, a step recess 220 can be provided on the side of the porous disc 120 facing away from the annular convex edge 130. At the same time, after the pot body forming step S5, an aluminum pad compounding step is provided. The aluminum pad compounding step is equivalent to the roughening step. In the aluminum pad compounding step, the aluminum pad 221 is compounded with the step recess 220 and the aluminum pad 221 is made flush with the end surface of the porous disc 120.

[0090] It is easy to understand that this embodiment improves the forming of the annular ridge 130, thereby facilitating the compounding of the additional aluminum pad 221 on the aluminum disc 110. Therefore, the cooperation between the aluminum pad 221 and the step recess 220 can enhance the anti-loosening capability while avoiding the overall thickening of the aluminum disc 110, thereby reducing the difficulty of molding.

[0091] In some specific embodiments of the present invention, the stepped recess 220 may be limited to the annular convex edge 130 having the insert portion 140 to reduce the difficulty of manufacturing the porous disc 120 .

[0092] In some specific embodiments of the present invention, the stepped recess 220 may be formed after the inserting piece 140 is processed to further reduce the punching strength.

[0093] It is particularly understandable that the mold for punching the step recess 220 can be manufactured separately, and it can be selected to punch one step recess 220 or multiple step recesses 220 at a time, according to actual needs and with the impact on manufacturing costs minimized.

[0094] Reference Fig. 9 In some specific embodiments of the present invention, in the molding step S3 , an aluminum ring 230 may be further provided, and the aluminum ring 230 presses the edge of the porous disc 120 and connects the aluminum disc 110 .

[0095] It is easy to understand that in this embodiment, by providing the aluminum ring 230 , the edge of the porous disc 120 is also coated, so that the aluminum material has a smooth transition, the impact of bumps on the porous disc 120 is reduced, and the probability of the porous disc 120 loosening is reduced.

[0096] In some specific embodiments of the present invention, the aluminum ring 230 may be made of aluminum foil to reduce the effect of the thickness of the aluminum ring 230 on the smoothness of the outer surface of the cookware.

[0097] In some specific embodiments of the present invention, the aluminum ring 230 may be polished to make the transition of the outer surface of the cookware smoother.

[0098] In the description of this specification, the description with reference to the terms "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] The terms "first, second, third, fourth", etc. (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that shown or described herein.

[0100] It should also be noted that in the description of this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0101] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0102] Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0103] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A non-stick pan manufacturing process, characterized in that: include: an aluminum sheet compounding step, compounding a layer of aluminum round sheet (110) on the bottom of the circular stainless steel plate (100) to form a first pot blank, wherein the diameter of the aluminum round sheet (110) is less than or equal to the diameter of the circular stainless steel plate (100); A porous disc manufacturing step, wherein a porous disc (120) is manufactured by punching, wherein the hole position of the porous disc (120) has an annular convex edge (130), and the annular convex edge (130) protrudes toward one side of the porous disc (120), and a plurality of the plurality of annular convex edges (130) are cut off so that one annular convex edge (130) has at least two upright inserting portions (140); a molding step of pressing the porous disc (120) toward the aluminum disc (110) of the first pot blank, so that the annular convex edge (130) and the insert portion (140) of the porous disc (120) are pressed into the aluminum disc (110), thereby forming a second pot blank; an etching step, silk-screening and etching the circular stainless steel plate (100) of the second pot blank, so that a concave-convex pattern is formed on the surface of the circular stainless steel plate (100), thereby forming a third pot blank; The pot body forming step comprises punching the third pot blank into a pot body, wherein the circular stainless steel plate (100) forms the inner surface of the pot body, and the aluminum disc (110) and the porous disc (120) form the outer surface of the bottom of the pot body.

2. A non-stick pan manufacturing process according to claim 1, characterized in that: The annular convex edge (130) comprises a circular hole-shaped convex ring (150), and the two inserting piece portions (140) formed by the circular hole-shaped convex ring (150) are arranged with different sizes.

3. A non-stick pan manufacturing process according to claim 1, characterized in that: The annular convex edge (130) comprises a waist-hole-shaped convex ring (160), and two sides of the waist-hole-shaped convex ring (160) in the width direction are used to form the inserting piece portion (140).

4. The process for making a non-stick pan according to claim 1, characterized in that: The porous disc manufacturing step also includes punching the porous disc (120) into a plurality of half discs (170), wherein the plurality of half discs (170) are arranged radially from the center, and the plurality of half discs (170) are connected at one side close to the center of the porous disc (120), and each half disc (170) is provided with at least one pair of the insert portions (140).

5. A non-stick pan manufacturing process according to claim 4, characterized in that: The junction of two adjacent half sheets (170) comprises two radially extending edges (180) and a chord edge (190) connecting the two radially extending edges (180).

6. The process for making a non-stick pan according to claim 1, characterized in that: The edge of the porous disc (120) is used to form a bottom fillet (200) of the pot body, and the bottom fillet (200) connects the side wall and the bottom wall of the pot body.

7. The process for making a non-stick pan according to claim 1, characterized in that: After the pot body forming step, a roughening step is provided, in which the aluminum material between the two inserting pieces (140) is punched out with a slotted jaw.

8. The process for making a non-stick pan according to claim 7, characterized in that: The slotted jaws have an embossing (210) embossed on the aluminum material, and the embossing (210) is arranged at different distances from the two inserting portions (140).

9. The process for making a non-stick pan according to claim 1, characterized in that: A stepped recess (220) is provided on a side of the porous disc (120) facing away from the annular convex edge (130), and an aluminum pad bonding step is provided after the pot body forming step, in which an aluminum pad 221 is bonded to the stepped recess (220) and the aluminum pad 221 is made flush with the end surface of the porous disc (120).

10. The process for making a non-stick pan according to claim 1, characterized in that: In the molding step, an aluminum ring (230) is also provided, and the aluminum ring (230) presses the edge of the porous disc (120) and connects the aluminum disc (110).

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