Polishing and glaze spraying device for enamel pot production

Abstract

The invention relates to the technical field of enamel pot production, in particular to a polishing and glaze spraying device for enamel pot production, comprising: a polishing module for polishing a blank cast iron pot and comprising a sand blasting machine, a polishing assembly and a conveying assembly; the glaze spraying module is used for spraying glaze to the formed iron pan and comprises a first glaze spraying assembly, a drying furnace for drying the first-stage glaze-sprayed iron pan and a firing kiln; the detection module is used for detecting operation data of the device and state data of the iron pan in the production process, and comprises a visual detector for detecting defects of the enamel pan, a temperature sensor for acquiring the environment temperature and a vibration sensor for detecting the vibration frequency of the device; and the main control module is used for acquiring device production data and determining related working modes of the polishing module and the glaze spraying module. The production efficiency and the production quality of enamel pot production are improved.

Description

Technical Field

[0001] This invention relates to the field of enamel pot production technology, and in particular to a grinding and glazing device for enamel pot production. Background Technology

[0002] Enameled pots have an enamel layer on both the inner and outer surfaces, combining the practicality of a pot with the beauty of enamel. The enamel layer is a plastic thermoplastic silicone tightly wrapped around the rim of the pot body. The rim and the thermoplastic silicone are nested in a ring groove, which prevents the rim, where the enamel layer cannot adhere, from contacting water or air. Generally, enamel pots need to be glazed during production to ensure that the enamel never fades and remains as good as new over time.

[0003] Chinese Patent Publication No. CN209920159U discloses a glazing device for producing cast iron enamel pots, including a mixing box. Feed inlets are connected to the upper left and right sides of the mixing box. A rotating rod is fixedly connected to the lower end of a first motor. A glazing box is fixedly connected to the lower end of the mixing box. A discharge port is provided below the telescopic plate. Discharge ports are connected at equal intervals below the conveyor box. A first baffle is threadedly connected to the center of the glazing box. An enamel pot body is located on the right side of the second baffle. A placement plate is threadedly connected to the lower end of the locking block. A fixing block is welded to the lower end of the slider. Therefore, the glazing device for producing enamel pots has the following problems: the inaccurate judgment of the uniformity of enamel pot production reflected by the defect area of ​​the pot body and the stability of glazing reflected by the vibration frequency of the support rod leads to a decrease in the precision of thinning. Summary of the Invention

[0004] To address this issue, the present invention provides a grinding and glazing device for enamel pot production, which overcomes the problem in the prior art where the inaccurate determination of the uniformity of enamel pot production reflected by the defect area of ​​the pot body and the stability of enamel pot glazing reflected by the vibration frequency of the support rod leads to a decrease in the precision of thinning.

[0005] To achieve the above objectives, the present invention provides a grinding and glazing device for producing enamel pots, comprising: a grinding module for grinding a blank cast iron pot, including a sandblasting machine for removing oil stains and oxide layers from the surface of the blank cast iron pot and outputting a sandblasted iron pot; a grinding component connected to the sandblasting machine for grinding the sandblasted iron pot; and a conveying component connected to the sandblasting machine and the grinding component respectively for conveying the ground cast iron pot to the sandblasting machine for secondary sandblasting to output a shaped iron pot.

[0006] The glazing module, connected to the polishing module, is used to glaze the formed iron pot. It includes a first glazing component connected to the conveying component for glazing the formed iron pot to form a first-stage glazed iron pot, a drying oven connected to the glazing component for drying the first-stage glazed iron pot, a second glazing component for glazing the dried glazed iron pot a second time, and a firing kiln connected to the second conveying component for firing the glazed iron pot into an enamel pot.

[0007] The detection module is connected to the grinding module and the glazing module respectively, and is used to detect the operating data of the device and the status data of the iron pot during the production process. It includes a visual detector set at the output end of the firing kiln to detect defects in the enamel pot, a temperature sensor connected to the secondary glazing component to obtain the ambient temperature, and a vibration sensor connected to the first glazing component to detect the vibration frequency of the device.

[0008] The main control module is connected to the grinding module, the glazing module and the detection module respectively, and is used to acquire device production data and determine the relevant working modes of the grinding module and the glazing module.

[0009] Furthermore, the polishing assembly includes,

[0010] A grinding machine is used to remove burrs or protrusions from the body of a pot.

[0011] A negative pressure vacuum cleaner is installed at a vertical position on the grinder to collect the dust generated during the grinding operation.

[0012] Furthermore, the first glazing assembly includes,

[0013] The spray gun is used to perform the first glazing operation on the pot body;

[0014] A support rod, which is connected to the spray gun, is used to adjust the distance between the spray gun and the pot body;

[0015] A robotic arm, positioned opposite the spray gun, is used to grip the pot body to flip it over.

[0016] Furthermore, the conveying assembly includes,

[0017] Conveyor belts are used to transport the pot body between various processes;

[0018] A rotating device is connected to the conveyor belt and works in conjunction with the conveyor belt to achieve the rotation of the pot body.

[0019] Furthermore, the main control module determines the uniformity of enamel pot production based on the area of ​​defects detected by the vision detector.

[0020] If the defect area of ​​the pot body is greater than the preset second defect area, the main control module determines that the uniformity of the enamel pot production is not within the allowable range and determines the firing mode of the firing kiln.

[0021] Furthermore, the firing mode of the kiln is to determine the heating rate of the kiln based on the average thickness of the enamel pot.

[0022] Furthermore, if the defect area of ​​the pot body is greater than a preset first defect area and less than or equal to a preset second defect area, the main control module acquires the vibration frequency of the support rod.

[0023] Furthermore, if the vibration frequency of the support rod is greater than a preset vibration frequency threshold, the main control module determines that the enamel pot glaze spraying stability is below the allowable range, and determines the spray gun distance based on the vibration frequency of the support rod.

[0024] Furthermore, after determining the distance to the spray gun, the main control module acquires the ambient temperature and calculates the average temperature.

[0025] If the average temperature is greater than the preset temperature threshold, the main control module determines that the effectiveness of the enamel pot glazing is below the allowable range and makes a second determination of the spray gun distance.

[0026] Furthermore, the main control module determines the spray gun distance a second time based on the variance of the ambient temperature.

[0027] Compared with existing technologies, the beneficial effects of this invention are as follows: the device described in this invention, through the coordinated operation of a grinding module, a glazing module, a detection module, and a main control module, optimizes the grinding and glazing methods, thereby improving the production efficiency and consistency of enamel pots. By employing a three-stage surface treatment process of "sandblasting-grinding-secondary sandblasting," and through the coordinated operation of the sandblasting machine and grinding components, the surface treatment of the metal substrate is optimized. Compared to traditional single sandblasting or grinding processes, this design precisely controls surface roughness while thoroughly removing oxidation, providing a favorable plane for subsequent glaze adhesion. The glazing module, through the coordinated operation of two-stage glazing and drying processes, ensures a uniform and defect-free glaze layer. The drying oven rapidly solidifies the underlying glaze after the initial glazing, preventing drips; the secondary glazing fills micropores, enhancing surface smoothness. This achieves improved production efficiency and quality in enamel pot production.

[0028] Furthermore, in the device described in this invention, the main control module acquires defect data of the pot surface based on a visual detector, and compares the defect area of ​​the pot body with preset first defect area and preset second defect area respectively. Because the stress generated in the pot body varies at different production stages during continuous production, the standard heating curve of the firing kiln causes thermal stress in the pot body, leading to glaze cracking, rework, and reduced production efficiency and product qualification rate. From the perspective of overall production, the heating rate of the firing kiln is adjusted according to the average thickness of the enamel pots in a unit production batch, ensuring that products of different quality states can obtain the optimal heat treatment scheme. This further improves the production efficiency and quality of enamel pot production.

[0029] Furthermore, in the process of glazing the pot body, the device of the present invention, due to the wear between the parts of the spray gun during long-term operation and the vibration of the rotating device, causes the support rod to be unable to uniformly spray the pot body, resulting in defects and uneven thickness in the produced enamel pots. By judging the stability of the glazing of the enamel pot and adjusting the distance of the spray gun in a timely manner, and by controlling the correlation between the vibration frequency and the distance of the spray gun, the incidence of glaze defects is reduced, thereby further improving the production efficiency and quality of enamel pot production.

[0030] Furthermore, after the initial adjustment of the spray gun distance, the device of this invention, due to the increased distance between the spray gun and the pot body leading to increased glaze overflow, affects the joints of the equipment and increases the heat generated during operation. By innovatively introducing a dual compensation mechanism of temperature mean and variance based on the initially determined spray gun distance, a secondary adjustment of the spray gun distance is performed. This reduces the possibility of glaze overflow and minimizes quality problems such as dry spraying and bubbles caused by excessively rapid glaze evaporation due to high temperatures, ensuring the stability of the production process. This further improves the production efficiency and quality of enamel pot production. Attached Figure Description

[0031] Figure 1 This is an overall structural block diagram of the polishing and glazing device for producing enamel pots according to an embodiment of the present invention;

[0032] Figure 2 This is a detailed structural block diagram of the polishing module of the polishing and glazing device for producing enamel pots according to an embodiment of the present invention;

[0033] Figure 3 This is a detailed structural block diagram of the pressure of the polishing component in the polishing and glazing device for producing enamel pots according to an embodiment of the present invention.

[0034] Figure 4 This is a flowchart illustrating how the heating rate of the firing kiln is determined based on the average thickness of the enamel pot in the polishing and glazing device used for producing enamel pots, as described in an embodiment of the present invention. Detailed Implementation

[0035] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0036] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The diagrams shown are, respectively, an overall structural block diagram of the polishing and glazing device for producing enamel pots according to an embodiment of the present invention, a specific structural block diagram of the polishing module, a specific structural block diagram of the pressure of the polishing component, and a flowchart of determining the heating rate of the firing kiln based on the average thickness of the enamel pot. The present invention provides a polishing and glazing device for producing enamel pots, characterized in that it includes:

[0038] The grinding module is used to grind a blank cast iron pot, including a sandblasting machine for removing oil and oxide layer from the surface of the blank cast iron pot and outputting a sandblasted iron pot, a grinding component connected to the sandblasting machine for grinding the sandblasted iron pot, and a conveying component connected to the sandblasting machine and the grinding component respectively for conveying the ground cast iron pot to the sandblasting machine for secondary sandblasting to output a shaped iron pot.

[0039] The glazing module, connected to the polishing module, is used to glaze the formed iron pot. It includes a first glazing component connected to the conveying component for glazing the formed iron pot to form a first-stage glazed iron pot, a drying oven connected to the glazing component for drying the first-stage glazed iron pot, a second glazing component for glazing the dried glazed iron pot a second time, and a firing kiln connected to the second conveying component for firing the glazed iron pot into an enamel pot.

[0040] The detection module is connected to the grinding module and the glazing module respectively, and is used to detect the operating data of the device and the status data of the iron pot during the production process. It includes a visual detector set at the output end of the firing kiln to detect defects in the enamel pot, a temperature sensor connected to the secondary glazing component to obtain the ambient temperature, and a vibration sensor connected to the first glazing component to detect the vibration frequency of the device.

[0041] The main control module is connected to the grinding module, the glazing module and the detection module respectively, and is used to acquire device production data and determine the relevant working modes of the grinding module and the glazing module.

[0042] The device described in this invention, through the coordinated operation of a grinding module, a glazing module, a detection module, and a main control module, improves the production efficiency and consistency of enamel pots by optimizing grinding and glazing methods. It utilizes a three-stage surface treatment process of "sandblasting-grinding-secondary sandblasting," achieving optimal surface treatment of the metal substrate through the synergistic cooperation of the sandblasting machine and grinding components. Compared to traditional single sandblasting or grinding processes, this design precisely controls surface roughness while thoroughly removing oxidation, providing a favorable plane for subsequent glaze adhesion. The glazing module, through the coordinated operation of two-stage glazing and drying processes, ensures a uniform and defect-free glaze layer. The drying oven rapidly solidifies the underlying glaze after the initial glazing, preventing drips; the secondary glazing fills micropores and enhances surface smoothness. This results in improved production efficiency and quality for enamel pots.

[0043] Specifically, the polishing components include,

[0044] A grinding machine is used to remove burrs or protrusions from the body of a pot.

[0045] A negative pressure vacuum cleaner is installed at a vertical position on the grinder to collect the dust generated during the grinding operation.

[0046] In practice, the grinding machine can be an angle grinder or a shot blasting machine. Those skilled in the art will understand that any equipment capable of grinding burrs or protrusions on the pot body is an alternative to the present invention, and will not be elaborated further here.

[0047] Specifically, the first glazing assembly includes,

[0048] The spray gun is used to perform the first glazing operation on the pot body;

[0049] A support rod, which is connected to the spray gun, is used to adjust the distance between the spray gun and the pot body;

[0050] A robotic arm, positioned opposite the spray gun, is used to grip the pot body to flip it over.

[0051] In specific implementation, the spray gun can be an electrostatic spray gun or an air spray gun. Those skilled in the art will understand that any equipment capable of performing glazing operations on the pot body is an alternative to the present invention, and will not be elaborated further here.

[0052] Specifically, the conveying assembly includes,

[0053] Conveyor belts are used to transport the pot body between various processes;

[0054] A rotating device is connected to the conveyor belt and works in conjunction with the conveyor belt to achieve the rotation of the pot body.

[0055] In implementation, the rotating device includes:

[0056] A hollow support platform is used to support the pot body;

[0057] The frequency converter is connected to the hollow support platform to adjust the speed of the hollow support platform in order to adapt to different stages;

[0058] Bearing housings are used for load-bearing hollow support platforms and frequency converters.

[0059] Specifically, the main control module determines the uniformity of enamel pot production based on the area of ​​defects detected by the vision detector.

[0060] If the defect area of ​​the pot body is greater than the preset second defect area, the main control module determines that the uniformity of the enamel pot production is not within the allowable range and determines the firing mode of the firing kiln.

[0061] In practice, the preset first defect area M1 and the preset second defect area M2 can be set according to the requirements of several tests or production.

[0062] Specifically, the firing mode of the kiln is to determine the heating rate of the kiln based on the average thickness of the enamel pot.

[0063] Specifically, the present invention provides an average enamel pot thickness H and a preset enamel pot thickness H0.

[0064] If H≥H0, the main control module will adjust the heating rate V of the firing kiln to V'=Ve. δ2 ;

[0065] If H < H0, the main control module will adjust the heating rate V of the firing kiln to V' = Ve. δ1 ;

[0066] Wherein, δ1 is the preset first heating rate adjustment coefficient, δ2 is the preset second heating rate adjustment coefficient, and δ1 < δ2 < 0.

[0067] The device described in this invention uses a main control module to acquire defect data on the surface of the pot body based on a visual detector. The module then compares the defect area of ​​the pot body with preset first and second defect areas. Because the stress generated in the pot body varies at different production stages during continuous production, the standard heating curve of the firing kiln causes thermal stress in the pot body, leading to glaze cracking, rework, and reduced production efficiency and product qualification rate. From an overall production perspective, the device adjusts the heating rate of the firing kiln based on the average thickness of the enamel pots within a production batch, ensuring that products of different quality states receive the optimal heat treatment. This further improves the production efficiency and quality of enamel pots.

[0068] Specifically, if the defect area of ​​the pot body is greater than a preset first defect area and less than or equal to a preset second defect area, the main control module acquires the vibration frequency of the support rod.

[0069] Specifically, the spray gun distance described in this invention is the straight-line distance between the nozzle of the spray gun and the center point of the rotating device. It can be understood that the motion trajectory of the spray gun can be set according to several production tests or for production requirements. Preferably, a motion trajectory of the spray gun is provided here, Y = ASinX, where Y is the vertical distance between the plane where the spray gun is located and the plane where the bottom surface of the pot is located, A is a proportionality coefficient, and X is the shortest distance between the vertical line where the spray gun is located and the vertical line where the center point of the bottom surface of the pot is located, X∈(0, П / 2).

[0070] Specifically, if the vibration frequency of the support rod is greater than a preset vibration frequency threshold, the main control module determines that the stability of the enamel pot glazing is below the allowable range, and determines the distance of the spray gun based on the vibration frequency of the support rod.

[0071] Specifically, the present invention provides a support rod vibration frequency P and a preset vibration frequency threshold P0.

[0072] If P > P0, the main control module will adjust the spray gun distance L to L' = Lln(1 + e) β );

[0073] Where β is the first distance adjustment coefficient, β>ln(e-1).

[0074] The device described in this invention addresses the issue that during the glazing process of a pot, wear between parts caused by prolonged operation of the spray gun and vibration from the rotating device prevent the support rod from uniformly coating the pot, resulting in defects and uneven thickness in the produced enamel pots. By assessing the stability of the glazing process and adjusting the spray gun distance in a timely manner, and by controlling the correlation between vibration frequency and spray gun distance, the incidence of glaze defects is reduced, further improving the production efficiency and quality of enamel pots.

[0075] Specifically, after determining the distance to the spray gun, the main control module acquires the ambient temperature and calculates the average temperature.

[0076] If the average temperature is greater than the preset temperature threshold, the main control module determines that the effectiveness of the enamel pot glazing is below the allowable range and makes a second determination of the spray gun distance.

[0077] Specifically, the main control module determines the spray gun distance twice based on the variance of the ambient temperature.

[0078] Specifically, the variance of ambient temperature is calculated based on the average temperature after calculating the temperature of a certain production cycle. It is understood that the method for calculating the variance of ambient temperature is a common technique used by those skilled in the art, and will not be elaborated here.

[0079] Specifically, the present invention sets an average temperature T and a preset temperature threshold T0. If T > T0, the main control module determines that the effectiveness of the enamel pot glazing is below the allowable range and calculates the variance of the ambient temperature.

[0080] The present invention also includes the variance t of the ambient temperature and a preset variance threshold t0;

[0081] If t > t0, the main control module will adjust the spray gun distance L' to L” for the second time;

[0082] Where L” satisfies α is the second distance adjustment coefficient, α∈(1,1.5).

[0083] After the initial adjustment of the spray gun distance, the device described in this invention addresses the issue of increased glaze overflow due to the increased distance between the spray gun and the pot body. This overflow affects the joints of the equipment and increases the heat generated during operation. By innovatively introducing a dual compensation mechanism for temperature mean and variance based on the initially determined spray gun distance, a secondary adjustment is performed. This reduces the possibility of glaze overflow and minimizes quality problems such as dry spraying and bubbles caused by excessively rapid glaze evaporation due to high temperatures, ensuring the stability of the production process. This further improves the production efficiency and quality of enamel pot production.

[0084] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A grinding and glazing device for producing enamel pots, characterized in that, include: The grinding module is used to grind a blank cast iron pot, including a sandblasting machine for removing oil and oxide layer from the surface of the blank cast iron pot and outputting a sandblasted iron pot, a grinding component connected to the sandblasting machine for grinding the sandblasted iron pot, and a conveying component connected to the sandblasting machine and the grinding component respectively for conveying the ground cast iron pot to the sandblasting machine for secondary sandblasting to output a shaped iron pot. The glazing module, connected to the polishing module, is used to glaze the formed iron pot. It includes a first glazing component connected to the conveying component for glazing the formed iron pot to form a first-stage glazed iron pot, a drying oven connected to the glazing component for drying the first-stage glazed iron pot, a second glazing component for glazing the dried glazed iron pot a second time, and a firing kiln connected to the second conveying component for firing the glazed iron pot into an enamel pot. The detection module is connected to the grinding module and the glazing module respectively, and is used to detect the operating data of the device and the status data of the iron pot during the production process. It includes a visual detector set at the output end of the firing kiln to detect defects in the enamel pot, a temperature sensor connected to the secondary glazing component to obtain the ambient temperature, and a vibration sensor connected to the first glazing component to detect the vibration frequency of the device. The main control module is connected to the grinding module, the glazing module and the detection module respectively, and is used to acquire device production data and determine the relevant working modes of the grinding module and the glazing module.

2. The polishing and glazing device for producing enamel pots according to claim 1, characterized in that, The polishing components include, A grinding machine is used to remove burrs or protrusions from the body of a pot. A negative pressure vacuum cleaner is installed at a vertical position on the grinder to collect the dust generated during the grinding operation.

3. The polishing and glazing device for producing enamel pots according to claim 2, characterized in that, The first glazing assembly includes, The spray gun is used to perform the first glazing operation on the pot body; A support rod, which is connected to the spray gun, is used to adjust the distance between the spray gun and the pot body; A robotic arm, positioned opposite the spray gun, is used to grip the pot body to flip it over.

4. The polishing and glazing device for producing enamel pots according to claim 3, characterized in that, The conveying assembly includes, Conveyor belts are used to transport the pot body between various processes; A rotating device is connected to the conveyor belt and works in conjunction with the conveyor belt to achieve the rotation of the pot body.

5. The polishing and glazing device for producing enamel pots according to claim 4, characterized in that, The main control module determines the uniformity of enamel pot production based on the area of ​​defects detected by the vision detector. If the defect area of ​​the pot body is greater than the preset second defect area, the main control module determines that the uniformity of the enamel pot production is not within the allowable range and determines the firing mode of the firing kiln.

6. The polishing and glazing device for producing enamel pots according to claim 5, characterized in that, The firing mode of the kiln is to determine the heating rate of the kiln based on the average thickness of the enamel pot.

7. The polishing and glazing device for producing enamel pots according to claim 6, characterized in that, If the defect area of ​​the pot body is greater than the preset first defect area and less than or equal to the preset second defect area, the main control module acquires the vibration frequency of the support rod.

8. The polishing and glazing device for producing enamel pots according to claim 7, characterized in that, If the vibration frequency of the support rod is greater than the preset vibration frequency threshold, the main control module determines that the stability of the enamel pot glazing is below the allowable range, and determines the spray gun distance based on the vibration frequency of the support rod.

9. The polishing and glazing device for producing enamel pots according to claim 8, characterized in that, After determining the distance to the spray gun, the main control module acquires the ambient temperature and calculates the average temperature. If the average temperature is greater than the preset temperature threshold, the main control module determines that the effectiveness of the enamel pot glazing is below the allowable range and makes a second determination of the spray gun distance.

10. The polishing and glazing device for producing enamel pots according to claim 9, characterized in that, The main control module determines the spray gun distance twice based on the variance of the ambient temperature.

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