Method for manufacturing vacuum kettle with upturned spout

Abstract

The invention discloses a method for manufacturing a vacuum kettle with an upturned spout. The spout and the kettle body are integrally formed, the upturned amplitude of the spout is large, the pouring performance is good, and the personalized needs can be met. The processing steps are as follows: S1: taking a circular sheet, and stretching and forming the circular sheet to process a mouth blank; S2: cutting a flat bottom at the lower end of the mouth blank to form a lower connecting port; S3: cutting a spout at the upper end of the mouth blank to form an upwardly tilted spout; S4: taking an inner liner body and an inner liner bottom, and welding the inner liner body and the inner liner bottom; S5: taking an outer shell, and inserting the inner liner into the outer shell, and welding the upper port of the inner liner to be located 2 to 10 mm below the upper connecting port of the outer shell; S6: welding and connecting the lower connecting port of the mouth with the upper connecting port of the outer shell; S7: welding and connecting the upper port of the outer shell bottom with the lower port of the outer shell; S8: vacuuming; S9: polishing the outer surface of the vacuum kettle.

Description

Technical Field

[0001] The invention belongs to the technical field of kettle manufacturing, and in particular relates to a method for manufacturing a vacuum kettle with an upturned spout. Background Art

[0002] The purpose of setting a spout on a kettle is to make it easier to pour water, ensure that the water flows out smoothly and gathers without dispersion, and prevent the water from flowing down along the kettle body when pouring. For the spout design of a vacuum kettle, since plastic parts are easier to mold, the spout and handle are usually molded in one piece using plastic material, and then installed on the mouth of the kettle. For example, the upper shoulder described in the invention patent application CN112716228A includes a pouring spout (spout) and a handle, and the upper shoulder is connected to the outer shell, the connecting ring and the liner; for example, the connecting piece described in the utility model patent CN204862366U is provided with a handle, and it can be clearly seen from the attached figure that the spout is provided on the connecting piece; the kettle of the above scheme has a spout made of plastic material, which has a poor texture and is easy to age, and the plastic material has a bad impression on health in the minds of consumers; for this reason, it is necessary to use a metal material to mold the spout in one piece with the kettle body, which is more beautiful, healthier, and has a better metal texture and lifespan; and in the prior art, the spout and the kettle body are molded in one piece, and then the spout is punched out at the mouth of the kettle, as shown in the attached figure. Figure 1 As shown, the spout of a kettle using this method is generally lower than the mouth of the kettle, and an upturned structure of the spout cannot be produced. In addition, due to the ductility of the stainless steel material, the extent of its convexity is not large. Summary of the invention

[0003] The purpose of the present invention is to provide a method for manufacturing a vacuum kettle with an upturned spout, wherein the spout and the kettle body are integrally formed, the upturned amplitude of the spout is large, the pouring performance is good, and personalized needs can be met.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] A method for manufacturing a vacuum kettle with an upturned spout, the vacuum kettle comprising an outer shell and an inner liner, wherein an upturned spout is arranged on one side of the mouth of the outer shell, a vacuum layer is formed between the outer shell and the inner liner, the outer shell comprises a spout, an outer shell body and an outer shell bottom which are arranged in sequence from top to bottom, and the method comprises the following processing steps:

[0006] S1: taking a circular sheet, and performing a stretching forming process on the circular sheet to process a pot mouth blank, and then sequentially processing an outer flange and a spout on the pot mouth blank;

[0007] S2: Using laser as a cutting tool to cut the bottom of the lower end of the Hukou blank flat, forming a lower connecting opening, so that the Hukou blank is connected from top to bottom;

[0008] S3: Using a laser as a cutting tool to cut the spout of the pot mouth blank, according to the preset angle and size, the outer flange and the redundant part of the upper end of the pot mouth blank are cut off, so that the spout forms an upwardly tilted spout, and the upper end of the pot mouth blank forms an upper end, and the tilted height of the spout is higher than the upper end, and finally the pot mouth is formed;

[0009] S4: Take an inner liner body and an inner liner bottom, weld the lower port of the inner liner body and the upper port of the inner liner bottom, so that the inner liner body and the inner liner bottom are welded and connected to form an inner liner;

[0010] S5: Take an outer shell and insert the inner shell into the outer shell, the outer wall of the upper port of the inner shell is connected to the inner wall of the outer shell, the connecting position is the welding position, and the welding position is located below the upper connecting port of the outer shell, the connection part is between the welding position and the upper connecting port, and the height of the connection part is 2 to 10 mm;

[0011] S6: Take the pot mouth, and weld its lower connection port to the upper connection port of the outer shell, and the welding position is the welding point;

[0012] S7: Take a shell bottom and weld its upper port to the lower port of the shell body;

[0013] S8: performing a vacuum operation on the gap between the outer shell and the inner liner to form a vacuum layer;

[0014] S9: Polish the outer surface of the vacuum kettle to eliminate the welding seam, so that the outer surface of the vacuum kettle looks smooth and integrated.

[0015] Preferably, the following steps are also included between steps S6 and S7:

[0016] The connection parts are shaped to eliminate the uneven deformation caused by welding and make them regular.

[0017] Preferably, the following steps are also included between steps S8 and S9:

[0018] The welding point is rolled and shaped to eliminate the uneven deformation of the connection part and the side wall above the lower connection port caused by welding, making it smooth.

[0019] Preferably, the height of the connecting portion in step S5 is 4 to 6 mm.

[0020] Preferably, the height of the connecting portion is 5 mm.

[0021] Compared with the prior art, the present invention has the following beneficial effects: by adopting the above technical scheme, by first forming the spout in one piece on the mouth of the pot separately, the convex amplitude of the spout can be made larger, and the pouring performance of the spout with a larger size is better, and the method creatively cuts off the spout part and the redundant part of the upper end of the spout through the laser cutting process to form an integral upturned spout, which further improves the pouring performance and is personalized; in the subsequent processing steps, the processing sequence of two steps is more critical, step S5 and step S6, in the method of this scheme, the outer shell and the inner liner are first welded and connected, and the welding part is located 2-10 below the upper connection port of the outer shell. mm, and then weld the mouth of the kettle to the upper connecting port of the outer shell. This order can make the welding of the inner liner and the mouth of the kettle easier; if the mouth of the kettle is welded first, the inner liner will be inserted too deeply into the outer shell, which will make it difficult to match and weld the mouth, and if no connection is reserved on the outer shell, the welding between the mouth of the kettle and the outer shell will interfere with the mouth of the inner liner, causing welding difficulties; therefore, the above-mentioned technical solution can solve the existing technical problems and produce a vacuum kettle with an integrated spout and a kettle body, a large upward tilt of the spout, good pouring performance, and the ability to meet personalized needs, and at the same time provides a better process sequence route.

[0022] A further beneficial effect is that a step is added between steps S6 and S7 to perform plastic surgery on the connection part to eliminate the concave-convex deformation of the connection part caused by welding, thereby ensuring the aesthetics of the kettle and ensuring the regularity of the connection port on the outer shell so that it can be welded to the kettle mouth after docking, thereby improving the quality of welding.

[0023] A further beneficial effect is that a step is added between steps S8 and S9 to perform rolling and shaping treatment on the weld to eliminate the concave-convex deformation of the connection part and the side wall above the lower connection port caused by welding, eliminate the mark left by the welding, and ensure the aesthetics of the kettle.

[0024] A further beneficial effect is that the height of the connection is set to 4 to 6 mm, with 5 mm being selected. This size can ensure the rigidity of the connection and prevent deformation, improve the quality of butt welding, and at the same time, the upper port of the liner is least affected by welding, and this distance is also the optimal size for rolling shaping treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a kettle spout formed in one piece in the prior art.

[0026] Figure 2 It is a schematic structural diagram of a vacuum kettle produced by the manufacturing method of the present invention.

[0027] Figure 3 It is a schematic diagram of the process route of steps S1-S3 of the present invention.

[0028] Figure 4 It is a schematic diagram of the process route of step S4 of the present invention.

[0029] Figure 5 It is a schematic diagram of the process route of step S5 of the present invention.

[0030] Figure 6 It is a schematic diagram of the process route of step S6 of the present invention.

[0031] Figure 7 It is a schematic diagram of the process route of step S7 of the present invention.

[0032] Figure 8 It is a schematic diagram of the process route of step S8 of the present invention. Implementation

[0033] In order to make the technical solution of the present invention clearer, the following Figures 1 to 8 It should be understood that the specific implementation methods described in this specification are only for explaining the present invention, and are not intended to limit the protection scope of the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Example 1

[0035] The present invention is a method for manufacturing a vacuum kettle with a greatly upturned spout. Figure 2 As shown, the vacuum kettle comprises an outer shell 1 and an inner liner 2. An upturned spout 110 is provided on one side of the mouth of the outer shell. A vacuum layer 3 is provided between the outer shell 1 and the inner liner 2. The outer shell comprises a spout 11, an outer shell body 12 and an outer shell bottom 13 arranged in sequence from top to bottom. Figure 3-8 As shown, the following steps are included:

[0036] S1: taking a circular sheet, and performing a stretching forming process on the circular sheet to produce a pot mouth blank, and then sequentially processing an outer flange 111 and a spout 112 on the pot mouth blank;

[0037] S2: Using laser as a cutting tool to cut the bottom of the lower end of the Hukou blank flat, forming a lower connecting opening 113, so that the Hukou blank is connected from top to bottom;

[0038] S3: Using a laser as a cutting tool to cut the spout of the pot mouth blank, according to the preset angle and size, the outer flange 111 and the redundant part of the upper end of the pot mouth blank are cut off, and the spout part 112 forms an upwardly tilted spout 110, and the upper end of the pot mouth blank forms an upper port 114. The tilted height of the spout 110 is higher than the upper port 114, and finally the pot mouth 11 is formed;

[0039] S4: Take an inner liner body 21 and an inner liner bottom 22, weld the lower end of the inner liner body 21 and the upper end of the inner liner bottom 22, so that the inner liner body 21 and the inner liner bottom 22 are welded and connected to form an inner liner 2;

[0040] S5: Take an outer shell 12, and insert the inner liner 2 into the outer shell 12, the outer side wall of the upper port of the inner liner 2 is connected to the inner side wall of the outer shell 12, and the connecting position is the welding position 122, and the welding position 122 is located below the upper connecting port 121 of the outer shell 12, and the connecting portion 123 is between the welding position 122 and the upper connecting port 121, and the height of the connecting portion 123 is 2-10mm;

[0041] S6: Take the pot mouth 11, and weld its lower connecting port 113 to the upper connecting port 121 of the outer shell 12 to form a welding point 124;

[0042] S7: Take a housing bottom 13 and weld its upper port to the lower port of the housing body 12;

[0043] S8: vacuuming the gap between the outer shell 1 and the inner liner 2 to form a vacuum layer 3;

[0044] S9: Polish the outer surface of the vacuum kettle to eliminate the welding seam, so that the outer surface of the vacuum kettle looks smooth and integrated.

[0045] Preferably, step S5 adopts suspended laser welding or circular argon arc welding. Example 2

[0046] In step S5 of Example 1, the height of the connecting portion 123 is preferably 4-6 mm. Example 3

[0047] In Embodiment 2, the height of the connection portion 123 is preferably 4 mm. Example 4

[0048] In Embodiment 2, the height of the connection portion 123 is preferably 5 mm. Example 5

[0049] In Embodiment 2, the height of the connection portion 123 is preferably 6 mm. Example 6

[0050] Since the welding in step S5 of the above embodiment may cause the connection portion 123 to be deformed or have a pit, which affects the processing of the subsequent steps, the present embodiment is based on the above embodiment, such as Figure 5 As shown, the following steps are added between steps S5 and S6:

[0051] The connection portion 123 is shaped to eliminate the concave-convex deformation of the connection portion 123 caused by welding, making it regular and facilitating welding connection. Example 7

[0052] Similarly, in the welding process of step S6 of the above embodiment, the high temperature of welding heating sometimes causes the thin-walled parts such as the connecting portion 123 and the side wall above the lower connecting port 113 of the pot mouth 11 to deform and produce unevenness. Based on the above embodiment, this embodiment adds the following steps between steps S8 and S9:

[0053] The welding portion 124 is subjected to rolling and shaping treatment to make the connecting portion 123 and the side wall above the lower connecting port 113 of the pot mouth 11 smooth.

Claims

1. A method for manufacturing a vacuum kettle with an upturned spout, the vacuum kettle comprising an outer shell (1) and an inner liner (2), an upturned spout (110) being provided on one side of the mouth of the outer shell (1), and a vacuum layer (3) being provided between the outer shell (1) and the inner liner (2), wherein: The outer shell (1) comprises a pot mouth (11), an outer shell body (12) and an outer shell bottom (13) which are arranged in sequence from top to bottom, and comprises the following processing steps: S1: taking a circular sheet, and performing a stretching forming process on the circular sheet to produce a pot mouth blank, and then sequentially processing an outer flange (111) and a spout (112) on the pot mouth blank; S2: Using a laser as a cutting tool to cut the bottom of the lower end of the Hukou blank flat, forming a lower connecting opening (113), so that the Hukou blank is connected from top to bottom; S3: using a laser as a cutting tool to cut the spout of the pot mouth blank at the upper end, and cutting off the outer flange (111) and the redundant part of the upper end of the pot mouth blank according to a preset angle and size, so that the spout part (112) forms an upwardly tilted spout (110), and the upper end of the pot mouth blank forms an upper port (114), and the tilted height of the spout (110) is higher than the upper port (114), and finally the pot mouth (11) is formed; S4: taking an inner liner body (21) and an inner liner bottom (22), welding a lower end of the inner liner body (21) and an upper end of the inner liner bottom (22) to weld the inner liner body (21) and the inner liner bottom (22) together to form an inner liner (2); S5: Take an outer shell (12), and insert the inner shell (2) into the outer shell (12), wherein the outer wall of the upper port of the inner shell (2) is connected to the inner wall of the outer shell (12), and the connecting position is the welding position (122), and the welding position (122) is located below the upper connecting port (121) of the outer shell (12), and the connecting portion (123) is between the welding position (122) and the upper connecting port (121), and the height of the connecting portion (123) is 2 to 10 mm; S6: Take the pot mouth (11), and weld its lower connection port (113) to the upper connection port (121) of the outer shell (12), wherein the welding position is the welding point (124); S7: Take a housing bottom (13), and weld its upper port to the lower port of the housing body (12); S8: performing a vacuum operation on the gap between the outer shell (1) and the inner shell (2) to form a vacuum layer (3); S9: Polish the outer surface of the vacuum kettle to eliminate the welding seam, so that the outer surface of the vacuum kettle looks smooth and integrated.

2. The method for manufacturing a vacuum kettle with an upturned spout according to claim 1, characterized in that: The following steps are also included between steps S6 and S7: The connection portion (123) is shaped to eliminate the concave-convex deformation of the connection portion (123) caused by welding, so that the connection portion (123) is regular.

3. The method for manufacturing a vacuum kettle with an upturned spout according to claim 2, characterized in that: The following steps are also included between steps S8 and S9: The welding point (124) is subjected to rolling and shaping treatment to eliminate the concave-convex deformation of the connecting portion (123) and the upper side wall of the lower connecting opening (113) caused by welding, so as to make it flat.

4. The method for manufacturing a vacuum kettle with an upturned spout according to any one of claims 1 to 3, characterized in that: In step S5, the height of the connecting portion (123) is 4 to 6 mm.

5. The method for manufacturing a vacuum kettle with an upturned spout according to claim 4, characterized in that: The height of the connecting portion (123) is 5 mm.

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