Double-bottom pot and manufacturing method

Abstract

A double-bottom pot and a manufacturing method, relating to the technical field of cookware. The double-bottom pot comprises a pot body (1); a bottom opening (2) is formed in the bottom end of the pot body (1); a double-bottom sheet (3) is provided at the bottom end of the bottom opening (2); a group of spherical ring blocks (4) is provided at the top end of the double-bottom sheet (3); a group of spherical slots (5) is formed in the top end of the bottom opening (2); annular blocks (6) are fixedly connected to the top ends of the spherical slots (5); annular inclined blocks (7) are fixedly connected to the bottom ends of two sides of each annular block (6); and T-shaped slots (8) are formed in the top ends of the spherical ring blocks (4). An oil press is used to press the spherical ring blocks (4) into the spherical slots (5), the annular inclined blocks (7) are squeezed by vertical ends of the T-shaped slots (8), and the top ends of the annular inclined blocks (7) approach one side of each annular block (6) to deform and then enter the T-shaped slots (8); once the annular inclined blocks (7) enter the horizontal ends of the T-shaped slots (8), the deformation of the annular inclined blocks (7) is recovered, the top ends of the annular inclined blocks (7) abut against the tops of the horizontal ends of the T-shaped slots (8), and at this time, the double-bottom sheet (3) is fixed; and after long-time use and intense collision, the double-bottom sheet (3) does not fall off, thereby prolonging the service life.

Description

Composite bottom pot and manufacturing method Technical Field

[0001] The disclosed embodiments relate to the technical field of cookware, and in particular to a composite bottom pot and a manufacturing method thereof. Background Art

[0002] With the improvement of my country's economic level, people's living conditions have gradually improved. Household induction cookers have unique advantages, such as no open flame, no soot, no oxygen consumption, no harmful gas, no dangerous radiation, and no thermal radiation energy conversion. They can heat, steam, stir-fry, boil, deep-fry, and keep warm. They are fully functional, convenient to use and energy-saving, and are welcomed by domestic consumers. At present, composite bottom pots are particularly suitable for household induction cookers. A layer of stainless steel bottom is compounded on the original aluminum bottom of the pot, and the bottom is welded to the bottom of the pot. Its disadvantage is that the processing technology is complicated and the steel plate needs to be welded to the bottom of the aluminum pot. Welding requires special equipment and can easily affect the surface finish of the bottom of the pot. The cost of welding is also high.

[0003] A search revealed the publication number CN201010209585.X, which includes the following steps: 1) initial stretching; 2) applying a composite sheet to the pot bottom; 3) secondary stretching; and 4) subsequent processing. Step 2) includes the following steps: 2.1) initial welding of the composite sheet: taking the composite sheet and spot-welding it to the bottom surface of the pot body, then roughening and sandblasting the bottom surface of the composite sheet; 2.2) composite processing: first, placing the pot body upside down on a high-frequency heating machine, starting the high-frequency heating machine to raise the temperature of the composite sheet and the pot body bottom to 450-550°C for 5-60 seconds; then, placing the pot body upside down on the composite processing machine for composite processing, ensuring a firm bond between the composite sheet and the pot body. Compared to existing technologies, the disclosed embodiments offer a simple process, low equipment requirements, and stable product quality. The product has high thermal conductivity and saves energy; the pot body is light and easy to use; it is easy to clean, has a non-stick bottom, and saves oil.

[0004] The aforementioned patented aluminum alloy serves as an intermediate medium between the inner and outer layers, similar to an adhesive. The stainless steel or stainless steel base is bonded to the aluminum alloy, and the aluminum alloy is then bonded to the outer stainless steel or stainless steel base. While this creates a three-layer composite structure, the layers remain separate. Over time or with intense impact, the composite sheet and aluminum alloy base can become detached, shortening the pot's service life. Therefore, a composite-bottom pot and manufacturing method are needed to address these technical issues.

[0005] Summary of the Invention

[0006] The purpose of the embodiments of the present disclosure is to remedy the deficiencies of the prior art and to provide a composite bottom pot and a manufacturing method thereof.

[0007] To achieve the above-mentioned objectives, the embodiments of the present disclosure provide the following technical solutions: a composite bottom pot and a manufacturing method, comprising a pot body, wherein the bottom end of the pot body is provided with a bottom opening, the bottom end of the bottom opening is provided with a composite bottom plate, and the diameter of the composite bottom plate is exactly the same as the diameter of the bottom opening, the top of the composite bottom plate is provided with a group of spherical ring blocks, the top of the bottom opening is provided with a group of spherical grooves, and the spherical ring blocks are all located in the spherical grooves, the top of the spherical grooves are fixed with an annular block, the bottom ends of both sides of the annular block are fixed with an annular oblique block, and the annular oblique block and the annular block are an integrated structure, the top of the spherical ring block is provided with a T-shaped groove, and the annular block and the annular oblique block are both located in the T-shaped groove.

[0008] Preferably, a group of annular heat-conducting blocks are welded to the top of the bottom opening, and the number of annular heat-conducting blocks is at least two, a circular heat-conducting block is welded to the middle of the top of the bottom opening, a group of square ring blocks are fixed to the top of the composite bottom plate, and the spherical ring blocks are fixed to the top of the square ring blocks, the spherical ring blocks and the square ring blocks are an integrated structure, and annular spaces are provided between adjacent annular heat-conducting blocks and circular heat-conducting blocks, and the square ring blocks are all located in the annular spaces.

[0009] Preferably, a triangular positioning groove is provided in the middle of the top of the bottom opening, a triangular positioning block is fixed to the middle of the top of the composite bottom plate, a through hole is provided in the middle of the circular heat conductive block, and the top of the triangular positioning block passes through the through hole and is located in the triangular positioning groove.

[0010] Preferably, a group of grooves are opened in the circumferential direction of the outer side of the bottom end of the pot body, and a group of matching blocks are fixedly connected to the circumferential direction of the outer side of the composite bottom plate, and the matching blocks are all located in the grooves.

[0011] Preferably, the top of the groove is fixed with a limit block, and the bottom of the limit block is located at the bottom of the bottom of the pot body, the top of the matching block is provided with a through opening, and both sides of the bottom of the through opening are provided with flat openings.

[0012] Preferably, the bottom end of the pot body, the bottom end of the composite bottom plate, the bottom end of the matching block and the bottom end of the limiting block are flush with each other.

[0013] Preferably, the size of the annular space is exactly the same as that of the square ring block, the bottom diameter of the spherical ring block is exactly the same as that of the annular space, and the diameter of the spherical ring block gradually increases and then decreases from the bottom to the top.

[0014] Preferably, the top of the triangular positioning groove is higher than the top of the spherical slot.

[0015] The present disclosure also provides a method for manufacturing a composite bottom pot, comprising the following steps:

[0016] S1: Using a die-casting mold to form an aluminum pot, the bottom of the pot body is pre-formed with a bottom opening and a spherical groove matching the spherical ring block, as well as a groove matching the matching block, and the top of the spherical groove is formed with a ring block and a ring oblique block;

[0017] S2: Weld the annular heat conductive block and the circular heat conductive block to the top of the bottom opening, and leave annular spaces between the annular heat conductive block and the circular heat conductive block, and punch a hole in the middle of the circular heat conductive block by a punching machine;

[0018] S3: A spherical ring block and a square ring block are machined out of the top of the composite film. A matching block matching the groove is provided on the outside of the composite film. A through hole matching the limit block is provided on the matching block. A flat surface is provided at the bottom of the through hole to match the shape of the limit block extruded.

[0019] S4: Cleaning and degreasing the duplicate film obtained in step S2, and then sanding it;

[0020] S5: Position the processed composite film with the bottom opening of the bottom end of the pot body so that the spherical ring block is located in the annular space, insert the triangular positioning block into the triangular positioning groove, align the matching block with the groove, and align the limit block with the through opening, and then use a hydraulic press to perform cold extrusion molding;

[0021] S6: Take out the object and it will be the finished product after inspection.

[0022] Preferably, the cleaning and degreasing in step S4 is performed by water, and the water is heated to 45-55° C. for cleaning and degreasing, and the sand blasting is performed by using No. 46 white corundum sand. Beneficial effects:

[0023] Compared with the prior art, the composite bottom pot and its manufacturing method have the following beneficial effects:

[0024] The disclosed embodiment utilizes a hydraulic press to press the spherical ring block into the spherical slot, and the annular bevel block is squeezed by the vertical end of the T-slot, so that the top end of the annular bevel block approaches one side of the annular block and deforms, and then enters the T-slot. After entering the horizontal end of the T-slot, the annular bevel block recovers its deformation, and the top end of the annular bevel block abuts against the top of the horizontal end of the T-slot. At this time, the duplex film is fixed, and the duplex film will not fall off after long-term use or violent collision, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic diagram of a three-dimensional structure of an embodiment of the present disclosure;

[0026] FIG2 is a schematic diagram of a cross-sectional structure of an embodiment of the present disclosure;

[0027] FIG3 is a partial enlarged schematic diagram of point A in FIG2 according to an embodiment of the present disclosure;

[0028] FIG4 is a partial enlarged schematic diagram of point B in FIG3 according to an embodiment of the present disclosure;

[0029] FIG5 is a cross-sectional exploded view of an embodiment of the present disclosure before manufacture;

[0030] FIG6 is a partial enlarged schematic diagram of point C in FIG2 according to an embodiment of the present disclosure;

[0031] FIG7 is a partial enlarged schematic diagram of point D in FIG2 according to an embodiment of the present disclosure;

[0032] FIG8 is a partial enlarged schematic diagram of point E in FIG5 according to an embodiment of the present disclosure.

[0033] In the figure: 1, pot body, 2, bottom mouth, 3, composite bottom film, 4, spherical ring block, 5, spherical slot, 6, ring block, 7, ring oblique block, 8, T-slot, 9, ring heat conductive block, 10, circular heat conductive block, 11, square ring block, 12, ring empty part, 13, triangular positioning groove, 14, triangular positioning block, 15, through hole, 16, groove, 17, matching block, 18, through port, 19, limit block, 20, flat port. DETAILED DESCRIPTION

[0034] The principles and features of the embodiments of the present disclosure are described below in conjunction with the accompanying drawings. The examples given are only used to explain the embodiments of the present disclosure and are not used to limit the scope of the embodiments of the present disclosure.

[0035] As shown in Figures 1 to 8, a compound bottom pot includes a pot body 1, a bottom opening 2 is provided at the bottom end of the pot body 1, a compound bottom plate 3 is provided at the bottom end of the bottom opening 2, and the diameter of the compound bottom plate 3 is exactly the same as the diameter of the bottom opening 2, a group of spherical ring blocks 4 are provided at the top of the compound bottom plate 3, a group of spherical grooves 5 are provided at the top of the bottom opening 2, and the spherical ring blocks 4 are all located in the spherical grooves 5, an annular block 6 is fixed to the top of the spherical groove 5, an annular oblique block 7 is fixed to the bottom end of both sides of the annular block 6, and the annular oblique block 7 and the annular block 6 are an integrated structure, a T-shaped groove 8 is provided at the top of the spherical ring block 4, and the annular block 6 and the annular oblique block 7 are both located in the T-shaped groove 8.

[0036] During operation, the composite film 3 is placed on the bottom opening 2, and the composite film 3 is squeezed by the hydraulic press to move the composite film 3 downward. The composite film 3 drives the spherical ring block 4 downward and is pressed into the spherical slot 5. The annular bevel block 7 is affected by the vertical end of the T-shaped slot 8, and the top of the annular bevel block 7 approaches the annular block 6. Then the annular block 6 and the annular bevel block 7 enter the vertical end of the T-shaped slot 8. When the annular bevel block 7 enters the horizontal end of the T-shaped slot 8, the shape of the annular bevel block 7 is restored, and the top of the annular bevel block 7 is restored to the outside, tightly against the top of the horizontal end of the T-shaped slot 8. At this time, the composite film 3 is fixed, and then the structure uses a hydraulic press to press the spherical ring block 4 into the spherical groove 5, and the annular oblique block 7 is squeezed by the vertical end of the T-shaped groove 8. The top of the annular oblique block 7 approaches the annular block 6 and deforms, and then enters the T-shaped groove 8. After entering the horizontal end of the T-shaped groove 8, the annular oblique block 7 recovers its deformation, and the top of the annular oblique block 7 rests against the top of the horizontal end of the T-shaped groove 8. At this time, the composite film 3 is fixed. After long-term use and fierce collision, the composite film 3 will not fall off, thereby extending its service life.

[0037] As shown in Figures 2, 5 and 6, a group of annular heat-conducting blocks 9 are welded to the top of the bottom mouth 2, and the number of annular heat-conducting blocks 9 is at least two, a circular heat-conducting block 10 is welded to the middle of the top of the bottom mouth 2, a group of square ring blocks 11 are fixed to the top of the complex bottom plate 3, and the spherical ring block 4 is fixed to the top of the square ring block 11, the spherical ring block 4 and the square ring block 11 are an integrated structure, and annular spaces 12 are provided between adjacent annular heat-conducting blocks 9 and the circular heat-conducting blocks 10, and the square ring blocks 11 are all located in the annular spaces 12. The size of the annular space 12 is exactly the same as that of the square ring block 11, the bottom diameter of the spherical ring block 4 is exactly the same as the diameter of the annular space 12, and the diameter of the spherical ring block 4 gradually increases from the bottom to the top and then decreases. The square ring block 11 can completely fill the annular space 12 to avoid the annular space 12 from expanding due to heat. The fitting square ring block 11 and the annular heat conducting block 9 are conducive to accelerating the heat conduction performance. Pressing the spherical ring block 4 into the spherical slot 5 can achieve the stability of the composite film 3, improve the tension connection, and increase the firmness and stability of the riveting.

[0038] During operation, the induction cooker heats the bottom of the composite bottom pot, and heat tends to accumulate in the middle of the bottom end of the composite bottom pot. The circular heat-conducting block 10 can transfer the heat to the square ring block 11, and the square ring block 11 transfers the heat to the annular heat-conducting block 9, which then transfers the heat to the inside of the pot body 1 through the bottom end of the pot body 1, avoiding heat accumulation in one place. At the same time, it increases high thermal conductivity, improves the thermal conductivity of the cookware and the thermal conductivity uniformity of the pot bottom, and avoids local high temperature.

[0039] As shown in Figures 2, 4, and 5, a triangular positioning groove 13 is provided in the middle of the top of the bottom opening 2, a triangular positioning block 14 is fixed to the middle of the top of the composite film 3, a through-hole 15 is provided in the middle of the circular heat-conducting block 10, and the top of the triangular positioning block 14 passes through the through-hole 15 and is located in the triangular positioning groove 13. The shape design of the triangular positioning groove 13 and the triangular positioning block 14 can quickly achieve the positioning of the composite film 3 and the bottom opening 2, as well as the positioning of the spherical ring block 4 and the spherical slot 5. The top of the triangular positioning groove 13 is higher than the top of the spherical slot 5. First align the top of the triangular positioning block 14 with the triangular positioning groove 13 to facilitate positioning.

[0040] As shown in Figures 2, 4, 7 and 8, a group of grooves 16 are opened on the outer circumference of the bottom end of the pot body 1, and a group of matching blocks 17 are fixed to the outer circumference of the composite bottom plate 3, and the matching blocks 17 are all located in the grooves 16. The design of the matching block 17 is conducive to increasing the contact area between the composite film 3 and the induction cooker and improving the uniformity of heating. The top of the groove 16 is fixedly connected to the limiting block 19, and the bottom end of the limiting block 19 is located at the bottom of the bottom end of the pot body 1. The top of the matching block 17 is provided with a through opening 18, and both sides of the bottom end of the through opening 18 are provided with a flat opening 20. The composite film 3 is placed in the bottom opening 2. At this time, the matching block 17 corresponds exactly to the groove 16, and the limiting block 19 corresponds to the through opening 18. The hydraulic press presses the composite film 3 downward, and the matching block 17 completely enters the groove 16. The limiting block 19 enters the through opening 18 and passes through the through opening 18. Under the action of the hydraulic press, the limiting block 19 is squeezed, and the bottom end of the limiting block 19 is pressed into the flat opening 20. At this time, the limiting block 19 is deformed in a T-shape to avoid deformation of the matching block 17 after heating and cooling, which causes the matching block 17 to bend and fix it. The bottom of the pot body 1, the bottom of the composite bottom plate 3, the bottom of the matching block 17 and the bottom of the limiting block 19 are flush with each other. The bottom of the plane state will not scratch the electromagnetic cooker, and it is more convenient for people to use.

[0041] A method for manufacturing a composite bottom pot comprises the following steps:

[0042] S1: Using a die-casting mold to form an aluminum pot, the bottom of the pot body 1 is pre-formed with a bottom opening 2 and a spherical groove 5 matching the spherical ring block 4, and a groove 16 matching the matching block 17, and the top of the spherical groove 5 is formed with an annular block 6 and an annular oblique block 7;

[0043] S2: Weld the annular heat-conducting block 9 and the circular heat-conducting block 10 to the top of the bottom opening 2, and leave annular spaces 12 between the annular heat-conducting block 9 and the circular heat-conducting block 10, and punch a hole 15 in the middle of the circular heat-conducting block 10 by a punching machine;

[0044] S3: The top of the composite film 3 is machined out of a spherical ring block 4 and a square ring block 11. The outer side of the composite film 3 is provided with a matching block 17 that matches the groove 16. The matching block 17 is provided with a through hole 18 that matches the limit block 19. The bottom end of the through hole 18 is provided with a flat opening 20 for matching the shape of the limit block 19 by extrusion;

[0045] S4: The composite film 3 obtained in step S2 is cleaned and degreased, and then sandblasted. The cleaning and degreasing in step S4 is performed by washing with water heated to 45-55° C., and the sandblasting is performed using No. 46 white corundum sand.

[0046] S5: Position the processed composite film 3 with the bottom opening 2 at the bottom end of the pot body 1, so that the spherical ring block 4 is located in the annular space 12, the triangular positioning block 14 is inserted into the triangular positioning groove 13, the matching block 17 is aligned with the groove 16, and the limit block 19 is aligned with the through opening 18, and then cold extrusion molding is performed using a hydraulic press;

[0047] S6: Take out the object and it will be the finished product after inspection.

[0048] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A composite bottom pot, comprising a pot body (1), wherein a bottom opening (2) is provided at the bottom end of the pot body (1), a composite bottom plate (3) is provided at the bottom end of the bottom opening (2), and the diameter of the composite bottom plate (3) is the same as the diameter of the bottom opening (2), a group of spherical ring blocks (4) are provided at the top end of the composite bottom plate (3), a group of spherical clamping grooves (5) are provided at the top end of the bottom opening (2), and the spherical ring blocks (4) are all located in the spherical clamping grooves (5), an annular block (6) is fixedly connected to the top end of the spherical clamping groove (5), an annular oblique block (7) is fixedly connected to the bottom ends of both sides of the annular block (6), and the annular oblique block (7) and the annular block (6) are an integrated structure, and a T-shaped groove (8) is provided at the top end of the spherical ring block (4), and the annular block (6) and the annular oblique block (7) are both located in the T-shaped groove (8).

2. A composite bottom pot according to claim 1, wherein: A group of annular heat-conducting blocks (9) are welded to the top of the bottom opening (2), and the number of the annular heat-conducting blocks (9) is at least two. A circular heat-conducting block (10) is welded to the middle of the top of the bottom opening (2). A group of square ring blocks (11) are fixedly connected to the top of the composite bottom plate (3), and the spherical ring block (4) is fixedly connected to the top of the square ring block (11). The spherical ring block (4) and the square ring block (11) are an integrated structure. An annular space (12) is provided between two adjacent annular heat-conducting blocks (9), and an annular space (12) is provided between the annular heat-conducting block (9) and the circular heat-conducting block (10). The square ring blocks (11) are all located in the annular space (12).

3. A composite bottom pot according to claim 2, wherein: A triangular positioning groove (13) is provided in the middle of the top of the bottom opening (2), a triangular positioning block (14) is fixedly connected in the middle of the top of the composite bottom plate (3), a through hole (15) is provided in the middle of the circular heat conducting block (10), and the top of the triangular positioning block (14) passes through the through hole (15) and is located in the triangular positioning groove (13).

4. A composite bottom pot according to claim 1, wherein: A group of grooves (16) are opened on the outer circumference of the bottom end of the pot body (1), and a group of matching blocks (17) are fixedly connected on the outer circumference of the composite bottom plate (3), and the matching blocks (17) are all located in the grooves (16).

5. A composite bottom pot according to claim 4, wherein: The top of the groove (16) is fixedly connected to a limit block (19), and the bottom of the limit block (19) is located at the bottom of the bottom of the pot body (1). The top of the matching block (17) is provided with a through opening (18), and both sides of the bottom of the through opening (18) are provided with a flat opening (20).

6. A compound bottom pot according to claim 5, wherein: The bottom end of the pot body (1), the bottom end of the composite bottom plate (3), the bottom end of the matching block (17) and the bottom end of the limiting block (19) are flush with each other.

7. A composite bottom pot according to claim 2, wherein: The size of the annular hollow portion (12) is the same as that of the square ring block (11), the bottom end diameter of the spherical ring block (4) is the same as the diameter of the annular hollow portion (12), and the diameter of the spherical ring block (4) gradually increases and then decreases from the bottom end to the top end.

8. A composite bottom pot according to claim 3, wherein: The top end of the triangular positioning groove (13) is higher than the top end of the spherical clamping groove (5).

9. A method for manufacturing a composite bottom pot, comprising the following steps: S1: using a die-casting mold to form an aluminum pot, so that the bottom of the pot body (1) is pre-formed with a bottom opening (2) and a spherical groove (5) matching the spherical ring block (4), and a groove (16) matching the matching block (17), and the top of the spherical groove (5) is formed with a ring block (6) and a ring oblique block (7); S2: The annular heat conductive block (9) and the circular heat conductive block (10) are welded to the top of the bottom opening (2), and an annular space (12) is left between the annular heat conductive block (9), the annular heat conductive block (9), and the circular heat conductive block (10), and a hole (15) is punched in the middle of the circular heat conductive block (10) by a punching machine; S3: A spherical ring block (4) and a square ring block (11) are machined on the top of the composite film (3); a matching block (17) matching the groove (16) is provided on the outer side of the composite film (3); a through opening (18) matching the stop block (19) is provided on the matching block (17); a flat opening (20) is provided at the bottom end of the through opening (18) to match the shape of the stop block (19) formed by extrusion; S4: cleaning and degreasing the duplicate film (3) obtained in step S2, and then sandblasting; S5: Positioning the processed composite bottom sheet (3) with the bottom opening (2) of the bottom end of the pot body (1) so that the spherical ring block (4) is located at the annular space (12), inserting the triangular positioning block (14) into the triangular positioning groove (13), aligning the matching block (17) with the groove (16), and aligning the limit block (19) with the through opening (18), and then using a hydraulic press to perform cold extrusion molding; S6: Take out the objects and they are finished products after they pass the inspection.

10. The manufacturing method according to claim 9, wherein: The cleaning and degreasing in step S4 is performed by water cleaning, and the water is heated to 45-55° C. for cleaning and degreasing. The sandblasting is performed by using No. 46 white corundum sand.

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