Process for forming a pot rim

Abstract

The application discloses a forming process of a pot edge, wherein the forming process of the pot edge comprises the following steps: cutting a groove with a preset shape in the second layer; and rolling and pressing the first layer and the third layer towards the direction of the groove respectively until one end of the first layer adjacent to the groove and one end of the third layer adjacent to the groove are accommodated in the groove, so that the first layer is rolled and pressed into the groove to form a first edge covering part, the third layer is rolled and pressed into the groove to form a second edge covering part, and the first edge covering part and the second edge covering part abut to form an edge covering structure. The edge covering structure is formed through the above processing procedure, so that the edge covering structure formed after abutting to each other is tightly closed without forming a gap, and the edge covering structure is wrapped by the groove wall, so that external moisture and dust are prevented from entering the edge covering structure, the sealing performance and the waterproof performance of the pot edge are improved, and the pot is more durable.

Description

Technical Field

[0001] This invention relates to the field of cooking utensil processing technology, and in particular to a forming process for the edge of a pot. Background Technology

[0002] Existing composite cookware features a three-layer edging structure. This typically involves cutting away the end of a stainless steel layer and part or all of the corresponding aluminum layer, then bending and covering the cut with the remaining stainless steel. However, this edging structure always creates gaps and protrusions at the edging location. These protrusions affect aesthetics, easily trap dirt, and allow moisture to seep into the gaps, causing the aluminum layer at the edging location to gradually oxidize and rust, resulting in bulges. Summary of the Invention

[0003] The main objective of this invention is to provide a forming process for the edge of a pot, which aims to improve the sealing and waterproof properties of the edge by forming a wrapping structure by double-sided centrally winding the first and third layers of the edge, thereby making the pot more durable.

[0004] To achieve the above objectives, the present invention proposes a forming process for the edge of a pot.

[0005] The pot edge comprises a first layer, a second layer, and a third layer stacked sequentially from top to bottom, wherein the number of second layers is at least one or more; the forming process steps of the pot edge include:

[0006] A groove of a predetermined shape is cut in the second layer;

[0007] The first layer and the third layer are rolled and pressed towards the groove until the end of the first layer adjacent to the groove and the end of the third layer adjacent to the groove are both accommodated in the groove, so that the first layer is rolled and pressed into the groove to form a first edge portion, and the third layer is rolled and pressed into the groove to form a second edge portion. The first edge portion and the second edge portion abut against each other to form an edge structure.

[0008] In one embodiment, the step of cutting a groove of a predetermined shape in the second layer and rolling the first layer and the third layer toward the groove, respectively, until the ends of the first layer and the third layer adjacent to the groove are both accommodated in the groove, so that the first layer is rolled into the groove to form a first edge portion, and the third layer is rolled into the groove to form a second edge portion, and the first edge portion and the second edge portion abut against each other to form an edge structure, further includes:

[0009] The first layer, with one end adjacent to the groove, and the third layer, with one end adjacent to the groove, are rolled and pressed towards the groove at a first preset angle.

[0010] In an embodiment, between the step of rolling the first end of the first layer and the first end of the third layer towards the recess by a first preset angle and the step of rolling the first layer and the third layer towards the recess until the first end of the first layer and the first end of the third layer are accommodated in the recess, so that the first layer forms a first hem portion by rolling into the recess, the third layer forms a second hem portion by rolling into the recess, and the first hem portion and the second hem portion abut to form a hem structure, further comprises:

[0011] attaching a first forming mold strip to a side of the first layer facing the recess, and attaching a second forming mold strip to a side of the third layer facing the recess, and the first forming mold strip is adjacent to the first layer end portion, and the second forming mold strip is adjacent to the third layer end portion.

[0012] In an embodiment, between the step of attaching a first forming mold strip to a side of the first layer facing the recess, and attaching a second forming mold strip to a side of the third layer facing the recess, and the first forming mold strip is adjacent to the first layer end portion, and the second forming mold strip is adjacent to the third layer end portion, and the step of rolling the first layer and the third layer towards the recess until the first end of the first layer and the first end of the third layer are accommodated in the recess, so that the first layer forms a first hem portion by rolling into the recess, the third layer forms a second hem portion by rolling into the recess, and the first hem portion and the second hem portion abut to form a hem structure, further comprises:

[0013] cooling the side of the first layer and the third layer away from the recess.

[0014] In an embodiment, before the step of cutting the recess of a preset shape in the second layer, further comprises:

[0015] removing surface burrs of the first layer, the second layer and the third layer.

[0016] In an embodiment, between the step of cutting the recess of a preset shape in the second layer and the step of rolling the first end of the first layer and the first end of the third layer towards the recess by a first preset angle, further comprises:

[0017] applying lubricating oil to the groove wall of the recess.

[0018] In an embodiment, between the step of coating lubricating oil on the groove wall of the groove and the step of rolling the first layer and the third layer by a first preset angle towards the direction of the groove, further comprises:

[0019] Coating high-temperature-resistant adhesive on the end face of the first layer adjacent to the groove and the end face of the third layer adjacent to the groove, so that the end face of the first layer adjacent to the groove and the end face of the third layer adjacent to the groove are bonded with the groove wall.

[0020] In an embodiment, between the step of removing surface burrs of the first layer, the second layer and the third layer and the step of cutting a groove with a preset shape on the second layer, further comprises:

[0021] Cutting a plurality of first notches on the side of the first layer away from the groove, the plurality of first notches being arranged at intervals; the depth of each first notch being less than the thickness of the first layer; cutting a plurality of second notches on the side of the third layer away from the groove, the plurality of second notches being arranged at intervals; the depth of each second notch being less than the thickness of the third layer.

[0022] The forming process steps of the pot edge of the technical scheme include: cutting a groove with a preset shape on the second layer; rolling the first layer and the third layer towards the direction of the groove respectively until the end of the first layer adjacent to the groove and the end of the third layer adjacent to the groove are accommodated in the groove, so that the first layer is rolled into the groove to form a first edge wrapping part, the third layer is rolled into the groove to form a second edge wrapping part, and the first edge wrapping part and the second edge wrapping part abut to form an edge wrapping structure; the pot edge forms an edge wrapping structure through the above processing procedure, so that the edge wrapping structure formed after abutting to each other is tightly sealed without forming a gap, and the edge wrapping structure is wrapped by the groove wall, avoiding the entry of external moisture and dust into the edge wrapping structure, thereby improving the sealing performance and water resistance of the pot edge, so that the pot is more durable. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings from the structures shown in the drawings without creative labor.

[0024] Figure 1 It is a structure schematic diagram of the pot edge before processing of the present application;

[0025] Figure 2The structure schematic diagram of the pot edge in the processing process of the present application;

[0026] Figure 3 The structure schematic diagram of the pot edge after processing of the present application;

[0027] Figure 4 The flow chart of the forming process of the pot edge of the present application.

[0028] Explanation of reference numerals:

[0029] Reference Name Reference Name 10 Pot rim 13 Third layer 11 First layer 12a Groove 12 Second layer 14 Cuff structure

[0030] The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0033] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0034] The traditional composite pot edge structure includes three layers, wherein the upper layer and the lower layer are both stainless steel, and the middle layer is aluminum; the edge structure generally cuts off the end part of one stainless steel layer and part or all of the aluminum layer corresponding to the position of the aluminum layer, and then bends and covers the cut part of the stainless steel layer which is not cut. However, such edge structure will always form a gap and a protrusion at the edge position, and the formed protrusion is easy to hide dirt, and water is easy to penetrate into the gap, which causes the edge structure to gradually oxidize and rust at the edge position, forming a bulge.

[0035] To this end, the present application proposes a forming process of a pot rim.

[0036] With reference to Figures 1 to 4 The pot rim 10 comprises a first layer 11, a second layer 12 and a third layer 13 which are sequentially stacked from top to bottom, wherein the number of the second layer 12 is at least one or more; the forming process of the pot rim 10 comprises the following steps:

[0037] S10 cutting a groove 12a of a preset shape in the second layer 12;

[0038] S20 rolling and pressing the first layer 11 and the third layer 13 towards the direction close to the groove 12a respectively until the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a are both accommodated in the groove 12a, so that the first layer 11 is rolled and pressed into the groove 12a to form a first rim wrapping part, the third layer 13 is rolled and pressed into the groove 12a to form a second rim wrapping part, and the first rim wrapping part and the second rim wrapping part abut to form a rim wrapping structure 14.

[0039] The pot rim 10 comprises a first layer 11, a second layer 12 and a third layer 13 which are sequentially stacked from top to bottom, wherein the number of the second layer 12 is at least one or more; the forming process of the pot rim 10 comprises the following steps:

[0040] Then, a groove 12a is cut in the second layer 12 by a cutting device, which on the one hand provides a space for accommodating the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a after rolling, so that the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a are more easily rolled and formed; on the other hand, the groove wall of the groove 12a can provide a moving guide for rolling of the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a, so that the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a are more easily rolled and formed into a first rim wrapping part and a second rim wrapping part respectively.

[0041] Finally, the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a are synchronously driven to move by a rolling wheel and a moving device, so that the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a can form a first rim wrapping part and a second rim wrapping part respectively; as the rolling wheel and the moving device continue to drive the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a to move until entering the groove 12a, the first rim wrapping part and the second rim wrapping part enter the groove 12a at the same time and abut to form a rim wrapping structure 14.

[0042] Optionally, the groove 12a is in a U shape, and the groove wall of the U-shaped groove 12a is a circular arc groove wall, which has a better forming guide effect on the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a, so that the one end of the first layer 11 adjacent to the groove 12a and the one end of the third layer 13 adjacent to the groove 12a are more easily formed by winding.

[0043] The pot edge 10 is particularly applied to the pot opening edge of a pot, and the first layer 11, the second layer 12, and the third layer 13 are all made of metal materials, wherein the first layer 11 is the top layer, the third layer 13 is the bottom layer, and the metal material used in the second layer 12 has a smaller hardness than the metal materials used in the first layer 11 and the third layer 13, so as to facilitate the cutting of the groove 12a in the second layer 12. The one end of the first layer 11 adjacent to the accommodating cavity is a first end, and the one end of the third layer 13 adjacent to the accommodating cavity is a second end.

[0044] The pot edge 10 forms the edge wrapping structure 14 through the above-mentioned processing procedure, so that the edge wrapping structure 14 formed after abutting against each other is tightly sealed without forming a gap, and the edge wrapping structure 14 is wrapped by the groove wall of the groove 12a, so as to avoid the entry of external moisture and dust into the edge wrapping structure 14, thereby improving the sealing performance and waterproof performance of the pot edge 10, and making the pot more durable.

[0045] In an embodiment, referring to Figures 1 to 4 , the edge wrapping structure 14 includes a first edge wrapping part and a second edge wrapping part, the first edge wrapping part is formed by winding one end of the first layer 11 towards the direction close to the groove 12a, the second edge wrapping part is formed by bending one end of the third layer 13 towards the direction close to the groove 12a, and the second edge wrapping part is arranged in abutment with the first edge wrapping part. Specifically, the end of the first edge wrapping part and the end of the second edge wrapping part completely fill the accommodating cavity, and the end of the first edge wrapping part and the end of the second edge wrapping part are pressed against each other in the accommodating cavity under the condition that the end of the first edge wrapping part and the end of the second edge wrapping part are limited by the cavity wall, so as to make the first edge wrapping part and the second edge wrapping part abut more tightly, thereby improving the sealing performance of the edge wrapping structure 14.

[0046] In an embodiment, referring to Figures 1 to 4 , the second edge wrapping part and the first edge wrapping part are arranged in an up-down symmetry in the accommodating cavity. In this way, the first edge wrapping part and the second edge wrapping part can be jointly pushed with the same force during the processing process, so that the first edge wrapping part and the second edge wrapping part abut more uniformly, which on the one hand improves the connection stability of the edge wrapping structure 14, and on the other hand can simplify the processing steps of the edge wrapping structure 14.

[0047] In another embodiment, referring to Figures 1 to 4, the first wrapping part and the second wrapping part are arranged in a non-up-and-down symmetric manner in the accommodating cavity, that is, the first wrapping part and the second wrapping part are pushed by different forces in the processing, so that one of the first wrapping part and the second wrapping part is more tightly abutted against the other of the first wrapping part and the second wrapping part, thereby improving the connection stability of the wrapping structure 14.

[0048] In an embodiment, referring to Figures 1 to 4 , the bent end of the first wrapping part and the bent end of the second wrapping part are arranged in a circular arc shape. In this way, on the one hand, the user's fingers are prevented from being scratched, and on the other hand, the wrapping structure 14 is more beautiful and complete. In another embodiment, the bent end of the first wrapping part and the bent end of the second wrapping part can also be arranged in a rectangular or trapezoidal shape.

[0049] In an embodiment, referring to Figures 1 to 4 , the first wrapping part and the second wrapping part are both made of stainless steel material. In this way, after the first wrapping part and the second wrapping part are pushed by the bending device to form the wrapping structure 14, the wrapping structure 14 is not easy to deform, and the first wrapping part and the second wrapping part are not easy to rust and corrode after contacting water, further improving the stability of the wrapping structure 14.

[0050] The first layer 11 and the third layer 13 are made of stainless steel material, and the second layer 12 is made of aluminum metal material. The second layer 12 made of aluminum metal has better deformation ability, facilitating cutting of the second layer 12.

[0051] Referring to Figures 1 to 4 , S10 is the step of cutting the groove 12a of the preset shape on the second layer 12, and S20 is the step of respectively rolling and pressing the first layer 11 and the third layer 13 towards the direction close to the groove 12a, until the one end of the first layer 11 close to the groove 12a and the one end of the third layer 13 close to the groove 12a are both accommodated in the groove 12a, and the one end of the first layer 11 close to the groove 12a abuts against the one end of the third layer 13 close to the groove 12a. Between S10 and S20, there is further included S30, which is the step of rolling and pressing the one end of the first layer 11 close to the groove 12a and the one end of the third layer 13 close to the groove 12a by a first preset angle towards the direction close to the groove 12a.

[0052] In the embodiment, the first layer 11 and the third layer 13 are first bent by a first preset angle by the rolling wheel before being rolled into the groove 12a from the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a. In this way, the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a are both pre-bent. During the process of being further pressed by the rolling wheel, the first layer 11 and the third layer 13 are further bent along the direction in which the pre-bent position extends. Thus, the first layer 11 and the third layer 13 are more likely to be in a rolled and bent state, and are more likely to be shaped into the edge covering structure 14.

[0053] Referring to Figures 1 to 4 , S30: the step of rolling the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a by a first preset angle towards the groove 12a, and S20: the step of rolling the first layer 11 and the third layer 13 towards the groove 12a until the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a are both accommodated in the groove 12a, and the end of the first layer 11 adjacent to the groove 12a abuts against the end of the third layer 13 adjacent to the groove 12a, further comprise:

[0054] S40: the first shaping mold strip is attached to the side of the first layer 11 facing the groove 12a, and the second shaping mold strip is attached to the side of the third layer 13 facing the groove 12a, and the first shaping mold strip is adjacent to the end of the first layer 11, and the second shaping mold strip is adjacent to the end of the third layer 13.

[0055] Specifically, the first shaping mold strip is arranged on the side of the first layer 11 facing the groove 12a, and the second shaping mold strip is arranged on the side of the third layer 13 facing the groove 12a. In this way, when the first layer 11 and the third layer 13 are rolled by the rolling wheel, the first layer 11 is more likely to be rolled along the outer contour of the first shaping mold strip, and the third layer 13 is more likely to be rolled along the outer contour of the second shaping mold strip. Thus, the speed of rolling the first layer 11 and the third layer 13 is accelerated, and the first layer 11 is less likely to be concave due to the support of the first shaping mold strip, and the third layer 13 is less likely to be concave due to the support of the second shaping mold strip. Thus, the structure of the first layer 11 and the third layer 13 after being rolled is more stable.

[0056] Optionally, the first forming die strip has a circular longitudinal cross-sectional shape, the second forming die strip has a circular longitudinal cross-sectional shape, and the first forming die strip and the second forming die strip are made of a high-temperature-resistant metal material.

[0057] With reference to Figures 1 to 4 , the step of bonding the first forming die strip to the side of the first layer 11 facing the groove 12a and bonding the second forming die strip to the side of the third layer 13 facing the groove 12a, and the step of S20 rolling and pressing the first layer 11 and the third layer 13 toward the groove 12a respectively until the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a are accommodated in the groove 12a and the end of the first layer 11 adjacent to the groove 12a abuts against the end of the third layer 13 adjacent to the groove 12a, further comprise:

[0058] S50 cooling the side of the first layer 11 and the third layer 13 away from the groove 12a.

[0059] Specifically, in the process of rolling and pressing the first layer 11 and the third layer 13, the position of the deformation of the first layer 11 and the third layer 13 will have an intensified movement of metal atoms under the external force of the rolling and pressing wheel, and the increased speed of atomic movement will cause the first layer 11 and the third layer 13 to heat up. Therefore, by cooling the side of the first layer 11 and the third layer 13 away from the groove 12a, the probability of quality change of the first layer 11 and the third layer 13 in the process of being rolled and pressed can be appropriately reduced by cooling, so that the rolling of the first layer 11 and the third layer 13 is more stable, and the rolling of the first layer 11 and the third layer 13 is not affected.

[0060] The cooling method can be a contact cooling device or a non-contact cooling device. The cooling time and temperature are determined according to the pressing time of the first layer 11 and the third layer 13 and the thickness of the first layer 11 and the third layer 13, and the cooling time and temperature are obtained through multiple tests.

[0061] With reference to Figures 1 to 4 , the step of S10 cutting the groove 12a of the second layer 12 to a predetermined shape further comprises: S60 removing surface burrs of the first layer 11, the second layer 12 and the third layer 13.

[0062] Specifically, before cutting the groove 12a, a deburring process is performed to make the surfaces of the first layer 11, the second layer 12 and the third layer 13 of the whole pot edge 10 smooth. After the operation, the smooth first layer 11 and the third layer 13 are wound by the winding wheel, so that the first layer 11 and the third layer 13 can form a smooth wrapping structure 14, which is not easy to scratch the user's fingers during use.

[0063] With reference to Figures 1 to 4 , between the step S10 of cutting the groove 12a of the second layer 12 of the preset shape and the step S30 of winding the first layer 11 and the third layer 13 by the winding wheel, the method further comprises: S70 applying lubricating oil to the groove wall of the groove 12a.

[0064] Specifically, before winding the first layer 11 and the third layer 13, the lubricating oil is sprayed on the groove wall of the groove 12a by a spraying device, so that the groove wall of the groove 12a is smoother. When the first layer 11 and the third layer 13 are wound by the winding wheel and enter the groove 12a, the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a can more easily enter along the smooth groove wall of the groove 12a, thereby speeding up the forming speed of the first layer 11 and the third layer 13.

[0065] With reference to Figures 1 to 4 , between the step S70 of applying lubricating oil to the groove wall of the groove 12a and the step S30 of winding the first layer 11 and the third layer 13 by the winding wheel, the method further comprises: S80 applying high-temperature-resistant adhesive to the end face of the first layer 11 adjacent to the groove 12a and the end face of the third layer 13 adjacent to the groove 12a, so that the end face of the first layer 11 adjacent to the groove 12a and the end face of the third layer 13 adjacent to the groove 12a are bonded to the groove wall of the groove 12a.

[0066] Specifically, the end face of the first layer 11 adjacent to the groove 12a and the end face of the third layer 13 adjacent to the groove 12a are coated with high-temperature-resistant adhesive by a spraying device. When the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a are wound by the winding wheel, the end of the first layer 11 adjacent to the groove 12a and the end of the third layer 13 adjacent to the groove 12a are more easily bonded to the groove wall of the groove 12a after entering the groove 12a, thereby avoiding the disconnection of the first layer 11 and the third layer 13 from the groove wall of the groove 12a, and improving the connection tightness of the first layer 11 and the third layer 13 to the groove 12a.

[0067] With reference to Figures 1 to 4, S60 removes the surface burrs of the first layer 11, the second layer 12 and the third layer 13, and between the step S10 of cutting the recess 12a of the preset shape on the second layer 12, the step S90 further includes: cutting a plurality of first notches on the side of the first layer 11 away from the recess 12a, the plurality of first notches are arranged at intervals; the depth of each first notch is less than the thickness of the first layer 11; cutting a plurality of second notches on the side of the third layer 13 away from the recess 12a, the plurality of second notches are arranged at intervals; the depth of each second notch is less than the thickness of the third layer 13.

[0068] Specifically, each first notch is arranged along the width of the first layer 11, and each second notch is arranged along the width of the third layer 13, so as to increase the area of the first notch and the second notch, and thus the position where the first layer 11 and the third layer 13 are easy to deform is also increased, so that the first layer 11 and the third layer 13 are more easily pressed and wound by the pressing wheel, and the speed of the pressing and forming of the first layer 11 and the third layer 13 is accelerated.

[0069] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A process for forming a pot rim, characterized by, The pot edge comprises a first layer, a second layer and a third layer stacked from top to bottom, wherein the number of the second layer is at least one or more; the forming process steps of the pot edge include: S10: cutting a groove with a preset shape in the second layer; S20: rolling and pressing the first layer and the third layer respectively towards the direction close to the groove until the end of the first layer close to the groove and the end of the third layer close to the groove are both accommodated in the groove, so that the first layer is rolled and pressed into the groove to form a first edge covering part, the third layer is rolled and pressed into the groove to form a second edge covering part, and the first edge covering part and the second edge covering part abut to form an edge covering structure.

2. The process of claim 1 wherein, S10: cutting a groove with a preset shape in the second layer; and S20: rolling and pressing the first layer and the third layer respectively towards the direction close to the groove until the end of the first layer close to the groove and the end of the third layer close to the groove are both accommodated in the groove, so that the first layer is rolled and pressed into the groove to form a first edge covering part, the third layer is rolled and pressed into the groove to form a second edge covering part, and the first edge covering part and the second edge covering part abut to form an edge covering structure. S30: rolling and pressing the end of the first layer close to the groove and the end of the third layer close to the groove by a first preset angle towards the direction close to the groove.

3. The forming process of the pot edge as described in claim 2, characterized in that, S30: rolling and pressing the end of the first layer close to the groove and the end of the third layer close to the groove by a first preset angle towards the direction close to the groove; and S20: rolling and pressing the first layer and the third layer respectively towards the direction close to the groove until the end of the first layer close to the groove and the end of the third layer close to the groove are both accommodated in the groove, so that the first layer is rolled and pressed into the groove to form a first edge covering part, the third layer is rolled and pressed into the groove to form a second edge covering part, and the first edge covering part and the second edge covering part abut to form an edge covering structure. S40: bonding a first forming mold strip on the side of the first layer facing the groove, and bonding a second forming mold strip on the side of the third layer facing the groove, and the first forming mold strip is adjacent to the end of the first layer, and the second forming mold strip is adjacent to the end of the third layer.

4. The forming process of the pot edge as described in claim 3, characterized in that, S40: bonding a first forming mold strip on the side of the first layer facing the groove, and bonding a second forming mold strip on the side of the third layer facing the groove, and the first forming mold strip is adjacent to the end of the first layer, and the second forming mold strip is adjacent to the end of the third layer; and S20: rolling and pressing the first layer and the third layer respectively towards the direction close to the groove until the end of the first layer close to the groove and the end of the third layer close to the groove are both accommodated in the groove, so that the first layer is rolled and pressed into the groove to form a first edge covering part, the third layer is rolled and pressed into the groove to form a second edge covering part, and the first edge covering part and the second edge covering part abut to form an edge covering structure. S50 cooling the side of the first layer and the third layer away from the groove.

5. The forming process of the pot edge as described in claim 2, characterized in that, S10 before the step of cutting a groove of a preset shape in the second layer further comprises: S60 removing surface burrs of the first layer, the second layer and the third layer.

6. The forming process of the pot edge as described in claim 2, characterized in that, S10 between the step of cutting a groove of a preset shape in the second layer and the step of S30 rolling the end of the first layer adjacent to the groove and the end of the third layer adjacent to the groove by a first preset angle towards the groove further comprises: S70 coating lubricating oil on the groove wall of the groove to increase the smoothness of the groove wall, facilitating the rolling of the end of the first layer and the end of the third layer into the groove.

7. The process of claim 6 wherein, S70 between the step of coating lubricating oil on the groove wall of the groove and the step of S30 rolling the end of the first layer adjacent to the groove and the end of the third layer adjacent to the groove by a first preset angle towards the groove further comprises: S80 coating high-temperature-resistant adhesive on the end surface of the first layer adjacent to the groove and the end surface of the third layer adjacent to the groove, so as to bond the end surface of the first layer adjacent to the groove and the end surface of the third layer adjacent to the groove with the groove wall; coating adhesive on the end surface of the first layer adjacent to the groove and the end surface of the third layer adjacent to the groove makes the end of the first layer adjacent to the groove and the end of the third layer adjacent to the groove bond with the groove wall, thereby strengthening the stability of the first layer and the third layer in the groove.

8. The forming process of the pot edge as described in claim 5, characterized in that, S60 between the step of removing surface burrs of the first layer, the second layer and the third layer and the step of S10 cutting a groove of a preset shape in the second layer further comprises: S90 cutting a plurality of first notches on the side of the first layer away from the groove, the plurality of first notches being arranged at intervals; the depth of each first notch is less than the thickness of the first layer; cutting a plurality of second notches on the side of the third layer away from the groove, the plurality of second notches being arranged at intervals; the depth of each second notch is less than the thickness of the third layer.

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