Cookware manufacturing apparatus and manufacturing method thereof

Abstract

The application discloses a pot manufacturing equipment and a manufacturing process thereof, which comprises a base and a positioning unit arranged on the base and used for positioning a pot body; the base is provided with a detection plate which is matched with a combined part of the pot body and a pot cover; the detection plate is provided with a detection groove, the detection groove is provided with colored liquid, and the detection groove is provided with a blocking part which is higher than an end surface of the detection plate and is arranged on a side close to the pot body; the pot cover is provided with an air inlet pipe; the pot body is matched with the pot cover, and the air inlet pipe is ventilated; when a combined part of the pot body and the pot cover leaks, pressure gas at a leaking part makes the colored liquid in the detection groove at a corresponding part rebound to the combined part of the pot body and the pot cover, so that the leaking part is marked, and the pot manufacturing equipment and the manufacturing process thereof are provided, leakage positioning and defect marking functions are integrated, leakage points are accurately traced by means of double-color liquid rebound marking, and the detection efficiency is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of cookware manufacturing technology, and in particular to a cookware manufacturing equipment and its manufacturing method. Background Technology

[0002] A pressure cooker is an energy-efficient cookware that achieves efficient cooking by generating high temperature and pressure in a sealed environment. Its sealing performance directly affects safety and energy efficiency. In industrial production, pressure cookers undergo rigorous sealing tests before leaving the factory. Currently, the industry commonly uses the static pressure monitoring method: after assembling the lid and body, compressed gas is injected into the pot through the top nozzle, and then the pressure gauge reading is observed to determine if there are any leakage defects. For example, Chinese patent CN109668697A discloses a device for testing the performance of pressure cookers.

[0003] However, the above methods have significant technical bottlenecks:

[0004] 1. Defect location blind spot: The pressure gauge can only report the overall pressure drop and cannot identify the specific location of the leak.

[0005] 2. Loss of efficiency in secondary testing: Non-conforming products require additional methods for re-inspection, which leads to disassembly and re-testing of the production line, significantly increasing the testing time per piece and reducing the production efficiency of pressure cookers. Summary of the Invention

[0006] This invention addresses the shortcomings of existing technologies by providing a cookware manufacturing equipment and its manufacturing method, which integrates leak location and defect marking functions. It achieves accurate source tracing of leaks through dual-color liquid rebound marking, significantly improving detection efficiency.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a cookware manufacturing equipment, comprising a base and a positioning unit disposed on the base for positioning the cookware body;

[0008] The base is equipped with a detection plate that matches the joint between the pot body and the pot lid;

[0009] The detection plate is provided with a detection groove, and the detection groove is filled with a colored liquid. A blocking part is provided on the side of the detection groove near the pot body, which is higher than the end face of the detection plate.

[0010] The pot lid is equipped with an air inlet pipe;

[0011] After the pot body and lid are assembled, air is introduced through the air inlet pipe. When a leak occurs at the joint between the pot body and lid, the pressure gas at the leak point causes the colored liquid in the detection tank at the corresponding point to bounce back to the joint between the pot body and lid, thereby marking the leak point.

[0012] In the above scheme, preferably, the positioning unit includes symmetrically arranged clamping cylinders, and the clamping cylinders are provided with clamping blocks that cooperate with the outer wall of the pot body.

[0013] In the above scheme, preferably, the wall of the detection tank is a smooth wall, the bottom of the detection tank is provided with a liquid injection hole, and the base is provided with a first liquid injection cylinder adapted to the liquid injection hole;

[0014] The first injection cylinder is equipped with a first piston, which is connected to a gas source. The liquid in the detection tank is drawn in by the movement of the first piston.

[0015] In the above solution, preferably, it includes grippers for holding the pot lid, and the grippers are connected to the robotic arm;

[0016] The air intake pipe is equipped with a pressure monitoring gauge, and both the pressure monitoring gauge and the robotic arm are controlled by a PLC controller.

[0017] In the above scheme, preferably, the base is provided with a liquid changing assembly, the liquid changing assembly includes a rotating plate and a first liquid injection cylinder and a second liquid injection cylinder disposed on the rotating plate, the rotation of the rotating plate realizes the switching and cooperation between the first liquid injection cylinder and the second liquid injection cylinder and the liquid injection hole respectively;

[0018] The second injection cylinder is equipped with a second piston, which is connected to a gas source. The movement of the second piston enables the suction of liquid in the detection tank.

[0019] The colored liquids in the first injection cylinder and the second injection cylinder are different colors.

[0020] In the above scheme, preferably, the base is provided with a drive push rod for driving the rotating plate to rotate, and the drive push rod is connected to the PLC controller.

[0021] In the above scheme, preferably, both the first injection cylinder and the second injection cylinder are provided with a replenishment port and a detection switch, and the detection plate is respectively provided with a first injection pipe that cooperates with the replenishment port on the first injection cylinder and a second injection pipe that cooperates with the replenishment port on the second injection cylinder.

[0022] In the above scheme, preferably, a reset spring is provided between the first injection tube and the second injection tube and the detection plate.

[0023] In the above scheme, preferably, the detection switch is a liquid level detection switch, which can control the first injection pipe and the second injection pipe to replenish the corresponding injection cylinder through the PLC controller.

[0024] In the above scheme, a preferred method for manufacturing cookware manufacturing equipment has the following process:

[0025] S1: Place the pot body on the base, and then clamp the pot body using the positioning unit; use a robotic arm to drive the grippers to hold the pot lid, and then assemble it onto the pot body;

[0026] S2: The detection tank is filled with colored liquid by injecting liquid into the first injection cylinder. Then, the air inlet pipe vents the pot body. When there is a leak between the pot body and the lid, the PLC controller receives feedback through the pressure monitoring gauge. At the same time, the pressure gas at the leaking part causes the colored liquid in the detection tank at the corresponding part to rebound to the joint between the pot body and the lid, thereby achieving the first marking of the leaking part.

[0027] S3: After the first marking, the PLC controller controls the first injection cylinder to draw the colored liquid in the detection tank back into the cylinder body, and then drives the drive push rod to rotate the rotating plate, so that the second injection cylinder cooperates with the injection hole and injects the colored liquid in the second injection cylinder into the detection tank.

[0028] S4: The robotic arm controls the gripper to rotate the lid relative to the pot body by a certain angle, and then continues to ventilate the pot body through the air inlet pipe;

[0029] S5: If there is no leakage, the first leak marked on the surface is caused by the pot body and the lid not being properly assembled.

[0030] If the pot body and lid still leak, the leaking part will bounce a colored liquid different from the first mark in the detection tank to the joint between the pot body and lid, completing the second mark. When there is a colored liquid mark of a certain color on the lid, the surface leakage defect exists on the lid. Conversely, when there is a colored liquid mark of a certain color on the pot body, the surface leakage defect exists on the pot body.

[0031] The beneficial effects of this invention are: This invention, through its innovatively designed dual-color liquid rebound marking and integrated detection system, achieves efficient location and judgment of sealing defects in pressure cookers.

[0032] 1. Precise Leakage Source Tracing: Utilizing the principle of colored liquid rebound and adhesion in the leak gas impact detection tank, the leak point is visually marked at the joint between the pot body and the pot lid, completely solving the technical blind spot of the traditional pressure attenuation method being unable to locate the defect location;

[0033] 2. Intelligent Defect Identification: The system adopts a dual-color marking combination judgment logic (e.g., red mark + blue mark), combined with the pot lid rotation secondary verification process, which can automatically distinguish between assembly errors and inherent defects of parts, greatly improving the effectiveness and efficiency of detection.

[0034] 3. Breakthrough in testing efficiency: The rotating plate liquid changing component enables rapid switching of the testing liquid, and with the PLC full-process automated control, the testing time is greatly improved, thereby improving the manufacturing efficiency of cookware. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0036] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0037] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0038] Figure 4 This is a schematic diagram of the three-dimensional structure of the detection plate of the present invention.

[0039] Figure 5 This is a three-dimensional structural diagram of the fluid exchange assembly of the present invention.

[0040] Figure 6 This is a cross-sectional view of the second injection cylinder of the present invention.

[0041] Figure 7 This is a bottom perspective view of the fluid exchange component of the present invention. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1-7 .

[0043] A cookware manufacturing device includes a base 1 and a positioning unit 3 disposed on the base 1 for positioning a pot body 2. The base 1 is provided with a detection plate 101 adapted to the mating part of the pot body 2 and the pot lid 4. Specifically, the detection plate 101 has a through hole in the middle for the pot body 2 to pass through. Figure 1 and Figure 4 As shown, the detection plate 101 has symmetrical columns on both sides that are fixedly connected to the base plate 1.

[0044] The lower end of the pot body 2 is placed on the bottom plate of the base 1 after passing through the through hole in the middle of the detection plate 101. At this time, the upper surface of the detection plate 101 is lower than the upper surface of the pot body 2. The positioning unit 3 includes symmetrically arranged clamping cylinders 301. The push rod end of the clamping cylinder 301 is fixed with a clamping block 302 that cooperates with the outer wall of the pot body 2. Figure 1 As shown, after the pot body 2 is placed on the base 1, the clamping block 302 symmetrically clamps the outer wall of the pot body 2 by driving the clamping cylinder 301, thereby fixing the pot body 2 on the base 1.

[0045] The cookware manufacturing equipment also includes a gripper 6 for holding the pot lid 4. The gripper 6 is connected to a robotic arm, which is connected to a PLC controller. The operator can control the robotic arm to achieve the gripper 6 to hold, rotate, and move the pot lid 4. The gripper 6 is preferably an electric three-jaw gripper or a pneumatic three-jaw gripper. The pot lid 4 is provided with a cylindrical outer wall for the gripper 6 to hold.

[0046] The robotic arm controls the gripper 6 to pick up the pot lid 4 and assemble it onto the pot body 2. The assembly is completed by rotating the pot lid 4 to mate it with the pot body 2. Multiple interlocking fastening parts are provided between the pot body 2 and the pot lid 4; this is a standard fastening arrangement for pressure cookers and will not be elaborated upon here. After assembly, the joint between the pot body 2 and the pot lid 4 is located above the detection plate 101, as shown below. Figures 1-3 As shown.

[0047] An air inlet pipe 401 is provided at the center of the pot lid 4. The air inlet pipe 401 is located at the center of the gripper 6. When the gripper 6 holds the pot lid 4, the air inlet pipe 401 is first inserted into the top air inlet rod of the pot lid 4 to make the air inlet pipe 401 and the air inlet rod seal together. After the pot lid 4 and the pot body 2 are assembled, high-pressure gas can be injected into the pot body 2 through the air inlet pipe 401 to test the sealing performance of the pot body. A pressure monitoring gauge is connected to the air inlet pipe 401. The pressure monitoring gauge and the robot are both controlled by a PLC controller.

[0048] A detection groove 102 is provided on the upper surface of the detection plate 101, and a colored liquid is disposed in the detection groove 102. A blocking part 103, which is higher than the end face of the detection plate 101, is provided on the side of the detection groove 102 near the pot body 2. Figure 3 and Figure 4 As shown, the blocking part 103 is an annular boss, and a flexible rubber part can be provided at the upper end of the boss to contact and abut against the wall of the pot body 2 to achieve a seal between the blocking part 103 and the outer wall of the pot body 2. The inner ring of the blocking part 103 is in clearance fit with the outer wall of the pot body 2, while the outer ring is connected to the groove of the detection groove 102.

[0049] The detection groove 102 is located below the joint between the pot body 2 and the pot lid 4. After the pot body 2 and the pot lid 4 are fitted together, air is vented through the air inlet pipe 401. When a leak occurs at the joint between the pot body 2 and the pot lid 4, the pressure gas at the leak location causes the colored liquid in the detection groove 102 at the corresponding location to bounce back to the joint between the pot body 2 and the pot lid 4, thereby marking the leak location. Preferably, the colored liquid can be a bright color such as red, yellow, or green, which makes it easier for operators to identify.

[0050] The test tank 102 has a smooth wall, which can be made of glass or smooth stainless steel. It can also be coated with a hydrophobic material to prevent the original liquid from adhering to the tank wall when changing colored liquid. The bottom of the test tank 102 is provided with a liquid injection hole 104. The liquid injection hole 104 is preferably located at any position below the bottom end face of the test tank 102, so that the liquid in the test tank 102 can be injected or refluxed through the liquid injection hole 104.

[0051] The base 1 is equipped with a fluid exchange assembly, which is mounted on a column near the injection port 104. Specifically, the fluid exchange assembly includes a rotating plate 601 rotatably mounted on the column and a first injection cylinder 5 and a second injection cylinder 7 located on the rotating plate 601 near the injection port 104. Both the first injection cylinder 5 and the second injection cylinder 7 are located below the detection plate 101. Figure 1 and Figure 5-7 As shown, the rotation of the rotating plate 601 enables the first injection cylinder 5 and the second injection cylinder 7 to switch and cooperate with the injection hole 104 respectively.

[0052] The base 1 is provided with a drive push rod 602 for driving the rotating plate 601 to rotate around the column. The drive push rod 602 can be a small electric push rod. One end of its cylinder is rotatably connected to the detection plate 101 through a pin, and the other end is rotatably connected to the end of the rotating plate 601 away from the pot body 2 through a pin. By extending and retracting the drive push rod 602, the rotating plate 601 is rotated. Furthermore, the first injection cylinder 5 and the second injection cylinder 7 are at the same distance from the center of the column, so that the first injection cylinder 5 and the second injection cylinder 7 are respectively engaged with the injection hole 104 after the rotating plate 601 rotates.

[0053] The first injection cylinder 5 and the second injection cylinder 7 have the same structure. The first injection cylinder 5 is equipped with a first piston 501, and the second injection cylinder 7 is equipped with a second piston 701. The lower end of the first injection cylinder 5 and the second injection cylinder 7 is equipped with an air pipe connected to an air source. The air pipe is connected to a pneumatic valve, which controls the air intake and exhaust of the injection cylinder to realize the lifting and lowering of the first piston 501 and the second piston 701 within the first injection cylinder 5 and the second injection cylinder 7. The part of the injection cylinder above the piston is a liquid chamber. The upper end of the first injection cylinder 5 and the second injection cylinder 7 is equipped with a docking port that can be connected to the injection hole 104. The movement of the first piston 501 or the second piston 701 realizes the suction of liquid in the detection tank 102.

[0054] The colored liquids in the first injection cylinder 5 and the second injection cylinder 7 are different colors. Specifically, the colored liquid in the first injection cylinder 5 can be red, while the liquid in the second injection cylinder 7 is a different colored liquid, such as a brightly colored liquid like green or yellow. Initially, if... Figure 2 and Figure 7 The first injection cylinder 5 is connected to the injection hole 104. At this time, the first piston 501 is driven to fill the detection tank 102 with red liquid. Then, air is introduced into the air inlet pipe 401 to fill the pot body 2 with air. When a leak occurs at the joint between the pot body 2 and the lid 4, the pressure gas at the leak location causes the red colored liquid in the detection tank 102 at the corresponding location to rebound to the joint between the pot body 2 and the lid 4, thereby marking the leak location on the surface of the pot body 2 and the lid 4 with red marks, so that the operator can identify the leak location.

[0055] After the first marking is completed, the first piston 501 is reset, drawing the red liquid in the detection tank 102 back into the first injection cylinder 5. Then, the drive push rod 602 is activated to drive the rotating plate 601 to rotate. Simultaneously, the gripper 6 drives the pot lid 4 to rotate relative to the pot body 2 by a certain angle, causing the colors on the pot body 2 and pot lid 4 to be misaligned after the first marking. After the rotating plate 601 rotates, the second injection cylinder 7 aligns with the injection hole 104. At this time, the pneumatic second piston 701 injects the green or yellow liquid from the cylinder into the detection tank 102. Then, air is introduced through the air inlet pipe 401. When leakage still occurs at the joint between the pot body 2 and the pot lid 4, the pressure gas at the leakage point causes the red colored liquid in the detection groove 102 at the corresponding point to bounce back to the joint between the pot body 2 and the pot lid 4. At this time, green or yellow liquid is marked at the leakage point, completing the second marking. When there are two colored liquid markings on the pot lid 4, the surface leakage defect point exists on the pot lid 4. Conversely, when there are two colored liquid markings on the pot body 2, the surface leakage defect point exists on the pot body 2.

[0056] To enable real-time replenishment of liquid in the first injection cylinder 5 and the second injection cylinder 7, a replenishment port 8 and a detection switch 9 are provided on both the first injection cylinder 5 and the second injection cylinder 7. The detection switch 9 is a liquid level detection switch. The detection plate 101 is provided with a first injection pipe 502 that cooperates with the replenishment port 8 on the first injection cylinder 5 and a second injection pipe 702 that cooperates with the replenishment port 8 on the second injection cylinder 7. A one-way valve is provided on the replenishment port 8, and the flow direction of the one-way valve is from the outside to the inside of the injection cylinder.

[0057] Both the first injection tube 502 and the second injection tube 702 are equipped with a return spring 10 between themselves and the detection plate 101. These return springs 10, controlled by a PLC controller, can respectively control the first injection tube 502 and the second injection tube 702 to replenish the corresponding injection cylinders. That is, in the initial state, if... Figure 1 and Figure 7As shown, at this time, the first injection cylinder 5 is connected to the injection hole 104, and the second injection pipe 702 is connected to the replenishment port 8 on the second injection cylinder 7. If the liquid in the second injection cylinder 7 is detected by the detection switch 9 as not reaching the standard amount, liquid is injected into the second injection cylinder 7 through the second injection pipe 702 until the detection switch 9 on the cylinder detects that it has reached the standard amount. When the rotating plate 601 rotates, the second injection cylinder 7 is connected to the injection hole 104, and the first injection pipe 502 is connected to the replenishment port 8 on the first injection cylinder 5. If the liquid in the first injection cylinder 5 is detected by the detection switch 9 as not reaching the standard amount, liquid is injected into the first injection cylinder 5 through the first injection pipe 502 until the detection switch 9 on the cylinder detects that it has reached the standard amount.

[0058] In this embodiment, the electric or pneumatic components can be fully automated through a PLC controller, thereby improving the efficiency of the cookware manufacturing equipment in this embodiment for testing cookware.

[0059] A method for manufacturing cookware manufacturing equipment, the process of which is as follows:

[0060] S1: Place the pot body 2 on the base 1, and then clamp the pot body 2 by the positioning unit 3; use a robotic arm to drive the gripper 6 to hold the pot lid 4, and then assemble it onto the pot body 2;

[0061] S2: Liquid is injected into the detection tank 102 through the first injection cylinder 5, so that the detection tank 102 is filled with colored liquid. Then, the air inlet pipe 401 vents air into the pot body 2. When there is a leak between the pot body 2 and the pot lid 4, the PLC controller receives feedback through the pressure monitoring gauge. At the same time, the pressure gas at the leaking part causes the colored liquid in the detection tank 102 at the corresponding part to rebound to the joint between the pot body 2 and the pot lid 4, thereby realizing the first marking of the leaking part.

[0062] S3: After the first marking, the PLC controller controls the first injection cylinder 5 to draw the colored liquid in the detection tank 102 back into the cylinder body, and then drives the drive push rod 602 to rotate the rotating plate 601, so that the second injection cylinder 7 cooperates with the injection hole 104 to inject the colored liquid in the second injection cylinder 7 into the detection tank 102.

[0063] S4: The mechanical arm controls the gripper 6 to rotate the lid 4 relative to the pot body 2 by a certain angle, and then continues to ventilate the pot body 2 through the air inlet pipe 401;

[0064] S5: If there is no leakage, the first leakage marked on the surface is caused by the pot body 2 and the pot lid 4 not being properly assembled.

[0065] If the pot body 2 and the pot lid 4 still have leakage, the leaking part will bounce the colored liquid in the detection tank 102, which is different from the first marking, to the joint between the pot body 2 and the pot lid 4, and complete the second marking. When there are two colored liquid markings on the pot lid 4, the surface leakage defect exists on the pot lid 4. Conversely, when there are two colored liquid markings on the pot body 2, the surface leakage defect exists on the pot body 2.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for manufacturing cookware, characterized in that: The cookware manufacturing equipment includes a base (1) and a positioning unit (3) disposed on the base (1) for positioning the cookware body (2); The base (1) is provided with a detection plate (101) that is compatible with the joint of the pot body (2) and the pot lid (4). A detection groove (102) is provided on the detection plate (101), and a colored liquid is provided in the detection groove (102). A blocking part (103) is provided on the side of the detection groove (102) near the pot body (2) that is higher than the end face of the detection plate (101). The pot lid (4) is provided with an air inlet pipe (401); After the pot body (2) and the pot lid (4) are fitted together, air is supplied through the air inlet pipe (401). When a leak occurs at the joint between the pot body (2) and the pot lid (4), the pressure gas at the leak location causes the colored liquid in the detection groove (102) at the corresponding location to bounce back to the joint between the pot body (2) and the pot lid (4), thereby marking the leak location. Includes grippers (6) for holding the pot lid (4); The base (1) is provided with a liquid exchange assembly, which includes a rotating plate (601) and a first liquid injection cylinder (5) and a second liquid injection cylinder (7) provided on the rotating plate (601); the colored liquids in the first liquid injection cylinder (5) and the second liquid injection cylinder (7) are different in color; The base (1) is provided with a drive push rod (602) for driving the rotating plate (601) to rotate. The bottom of the detection tank (102) is provided with a liquid injection hole (104), and the base (1) is provided with a first liquid injection cylinder (5) that is adapted to the liquid injection hole (104). S1: Place the pot body (2) on the base (1), and then clamp the pot body (2) by the positioning unit (3); use the robotic arm to drive the gripper (6) to clamp the pot lid (4), and then assemble it on the pot body (2); S2: The first injection cylinder (5) injects liquid into the detection tank (102) to fill the detection tank (102) with colored liquid. Then the air inlet pipe (401) vents the pot body (2). When there is a leak between the pot body (2) and the pot cover (4), the PLC controller receives feedback through the pressure monitoring gauge. At the same time, the pressure gas at the leaking part causes the colored liquid in the detection tank (102) at the corresponding part to rebound to the joint between the pot body (2) and the pot cover (4), thereby realizing the first marking of the leaking part. S3: After the first marking, the PLC controller controls the first injection cylinder (5) to draw the colored liquid in the detection tank (102) back into the cylinder body, and then causes the drive push rod (602) to drive the rotating plate (601) to rotate, so that the second injection cylinder (7) cooperates with the injection hole (104) to inject the colored liquid in the second injection cylinder (7) into the detection tank (102); S4: The gripper (6) controlled by the robotic arm drives the lid (4) to rotate relative to the pot body (2) by a certain angle, and then continues to ventilate the pot body (2) through the air inlet pipe (401); S5: If there is no leakage, it indicates that the leakage marked in the first instance was caused by the pot body (2) and the pot lid (4) not being properly assembled; If the pot body (2) and the pot lid (4) still have leakage, the leaking part will bounce the colored liquid in the detection tank (102) that is different from the first mark to the joint of the pot body (2) and the pot lid (4) to complete the second mark. When there are two colored liquid marks on the pot lid (4), it indicates that the leakage defect exists on the pot lid (4). Conversely, when there are two colored liquid marks on the pot body (2), it indicates that the leakage defect exists on the pot body (2).

2. The method for manufacturing a cookware according to claim 1, characterized in that: The positioning unit (3) includes symmetrically arranged clamping cylinders (301), and the clamping cylinders (301) are provided with clamping blocks (302) that cooperate with the outer wall of the pot body (2).

3. The method for manufacturing a cookware according to claim 1, characterized in that: The detection groove (102) has a smooth wall. The first injection cylinder (5) is equipped with a first piston (501). The first injection cylinder (5) is connected to a gas source. The liquid in the detection tank (102) is drawn by the movement of the first piston (501).

4. The method for manufacturing a cookware according to claim 3, characterized in that: The gripper (6) is connected to the robotic arm; The air intake pipe (401) is equipped with a pressure monitoring gauge, and both the pressure monitoring gauge and the robotic arm are controlled by a PLC controller.

5. A method for manufacturing a cookware according to claim 4, characterized in that: The rotating plate (601) rotates to achieve the switching and cooperation between the first injection cylinder (5) and the second injection cylinder (7) and the injection hole (104), respectively; The second injection cylinder (7) is equipped with a second piston (701). The second injection cylinder (7) is connected to a gas source. The liquid in the detection tank (102) is drawn by the movement of the second piston (701).

6. A method for manufacturing a cookware according to claim 5, characterized in that: The drive push rod (602) is connected to the PLC controller.

7. A method for manufacturing a cookware according to claim 5, characterized in that: The first injection cylinder (5) and the second injection cylinder (7) are each provided with a replenishment port (8) and a detection switch (9). The detection plate (101) is provided with a first injection pipe (502) that cooperates with the replenishment port (8) on the first injection cylinder (5) and a second injection pipe (702) that cooperates with the replenishment port (8) on the second injection cylinder (7).

8. A method for manufacturing a cookware according to claim 7, characterized in that: A reset spring (10) is provided between the first injection tube (502) and the second injection tube (702) and the detection plate (101).

9. A method for manufacturing a cookware according to claim 7, characterized in that: The detection switch (9) is a liquid level detection switch, which can control the first injection pipe (502) and the second injection pipe (702) to replenish the corresponding injection cylinders through the PLC controller.

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