Uniform heating control method for glass cup homogenization treatment

Abstract

The invention provides a uniform heating control method for glass cup homogenization treatment, belongs to the technical field of glass cup processing, and aims to solve the problem that the quality of a finished product is affected by non-uniform heating of a glass cup due to non-uniform heat distribution easily caused by single resistance wire heating in an existing glass heating control method. According to the method, a composite heating furnace is adopted, a resistance wire heating element, an infrared heater and a microwave generator are combined, the temperature in the furnace is monitored in real time, the heating power is dynamically adjusted, and three heating modes are matched with one another in the front stage, the middle stage and the rear stage of heating treatment, so that uniform heating of the glass cup is achieved, the resistance wire heating element rapidly increases the temperature in the furnace, the infrared heater ensures that the surface of the glass is uniformly heated, and the microwave generator makes the temperature in and on the surface of the glass more consistent; the method effectively solves the problem of non-uniform heat distribution, and improves the finished product quality of the glass.

Description

Technical Field

[0001] The present invention relates to the technical field of glass cup processing, and more specifically, to a uniform heating control method for the homogeneous treatment of glass cups. Background Art

[0002] The homogeneous treatment of glass cups is to reduce the stress concentration inside the glass, so that the glass cups can share stress more evenly when subjected to external forces, enhance their anti-breakage ability, and reduce the risk of breakage due to minor collisions or temperature changes during use. Among them, heat treatment is the most common treatment method. The glass cup is heated to a certain temperature and held for a period of time, and then slowly cooled. During the heating process, the molecular motion inside the glass intensifies, the structure is adjusted and relaxed, making the originally uneven structure tend to be uniform, and slow cooling helps to maintain this uniformity and prevent the generation of new stresses.

[0003] For example, the patent with the publication number CN107515637A discloses a process control method for the tempering of glass plates. After the glass plates are sent into the heating furnace, the monitoring unit monitors the working parameters of the heating elements in real time, filters the working parameters of the heating elements, and then transmits the filtered working parameters of the heating elements to the control unit. The control unit compares the received working parameters of the heating elements with the set threshold values. When the working parameters of the heating elements reach the set threshold values during the process of changing again after passing through the maximum and minimum values, the control unit issues an instruction to the driving mechanism, and the driving mechanism directly sends the glass plates out of the heating furnace or sends the glass plates out of the heating furnace after a delay, thus completing the heating process of the glass plates. Generally, when heating for the existing homogeneous treatment of glass, a single resistance wire is usually used for heating by energization, and the heating temperature is controlled by controlling the on-off of the resistance wire or adjusting the current magnitude to complete the heating of the glass. However, the existing glass heating control method using a single resistance wire for heating is likely to cause uneven heat distribution, resulting in uneven heating of the glass cups and affecting their finished product quality.

[0004] Therefore, a uniform heating control method for the homogeneous treatment of glass cups is introduced. Summary of the Invention

[0005] The purpose of the present invention is to provide a uniform heating control method for the homogeneous treatment of glass cups, aiming to solve the problem in the above background art that the existing glass heating control method using a single resistance wire for heating is likely to cause uneven heat distribution, resulting in uneven heating of the glass cups and affecting their finished product quality.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A uniform heating control method for the homogeneous treatment of glass cups, including the following implementation steps:

[0007] S1: Preparation stage. Neatly place the glass cups to be homogenized on a heat-resistant tray, maintain an appropriate spacing and inspect the glass cups. After the inspection is completed, start the composite heating furnace in the heating system and debug it.

[0008] S2: Initial heating stage. Start the resistance wire heating element and operate it at the rated power to rapidly increase the temperature inside the composite heating furnace. During this process, the temperature sensor continuously monitors the average temperature inside the furnace. The hot air circulates evenly inside the furnace under the action of the circulation fan, and the heat-resistant tray is used to guide the hot air flow to pass through each glass cup.

[0009] S3: Intermediate transition heating stage. When the temperature inside the composite heating furnace reaches the preset threshold, the control system reduces the power of the resistance wire heating element, and at the same time starts the infrared heater. The hot air circulation continues to be maintained. The resistance wire heating element and the infrared heater act together to heat the glass cups. When heating, the infrared heater automatically adjusts the radiation angle and power according to the placement position of the glass cups and the temperature distribution inside the furnace.

[0010] S4: Final precise heating stage. When the temperature inside the composite heating furnace approaches the target homogenization temperature of the glass cups, reduce the power of the resistance wire heating element and the infrared heater, and start the microwave generator to generate microwaves to penetrate the glass cups.

[0011] S5: Heat preservation stage. When the glass cups reach the target homogenization temperature, the control system controls the power of the resistance wire heating element, the infrared heater and the microwave generator to remain unchanged, and keeps the temperature stable within the set heat preservation temperature range. The circulation fan continues to operate, and the temperature sensor continuously monitors the temperature inside the furnace and the temperature of the glass cups at each position.

[0012] Further, after the completion of step S5, it enters the waste heat recovery and utilization stage of the glass cup heating control, that is, the hot air discharged from the composite heating furnace during the heat preservation stage of homogenization treatment is preheated and recovered through a heat exchanger. When the hot air is discharged, it transfers heat to the cold water or air flowing through the heat exchanger. The preheated water or air is collected for preheating the glass cups about to enter the composite heating furnace or supplied to other production links that need heating.

[0013] Further, after the waste heat recovery and utilization stage of the glass cup heating control, it enters the cooling stage, that is, when the heat preservation time reaches the set value, stop the operation of all heating equipment, quickly cool down the glass cups. After the cooling is completed, open the composite heating furnace and take out the glass cups from the heat-resistant tray for subsequent quality inspection and packaging processes.

[0014] Further, the cooling stage includes the following implementation steps:

[0015] I. Natural cooling start: When the heat preservation time reaches the set value, immediately stop the operation of all heating devices, and let the glass cup cool naturally in the composite heating furnace. At this time, the circulation fan continues to run at a low speed;

[0016] II. Cooling acceleration: After natural cooling for a period of time, accelerate the cooling process by introducing cold air through the fan. The cold air enters the composite heating furnace through the intake pipe, and under the action of the circulation fan, the cold air is guided to flow through each glass cup. When the temperature drops below the safe range of 70°C, the cooling stage ends.

[0017] Furthermore, in the step S1, the specific implementation steps of the preparation stage are as follows:

[0018] S101: Glass cup preparation: Neatly place the glass cups to be homogenized on the specified positions of the heat-resistant tray, leaving gaps between adjacent glass cups to avoid mutual contact. At the same time, check whether the glass cups have obvious defects or damages, and remove the unqualified glass cups:

[0019] S102: Equipment preparation: Turn on the homogenization heating system, including equipment such as a composite heating furnace, a circulation fan, and a temperature sensor, and ensure that the equipment is in a normal working state. Enter the corresponding basic parameters into the control system according to the production batch and type of the glass cups.

[0020] Furthermore, the heat-resistant tray includes a stainless steel flat plate and first sleeves fixedly connected to the four corners of the top of the stainless steel flat plate. Second sleeves are respectively fixedly connected to the four corners of the bottom of the stainless steel flat plate. Telescopic struts are movably sleeved in the first sleeves and the second sleeves, and air collecting cylinders are evenly and spacedly fixedly connected to the top of the stainless steel flat plate. The bottom ports of the air collecting cylinders extend to the bottom of the stainless steel flat plate. A clamping member is movably arranged above the top ports of the air collecting cylinders, and the clamping member is used to clamp the glass cup body to be homogenized and heated.

[0021] Furthermore, the clamping member is fixedly connected to a fixing frame between the inner walls of the air collecting cylinder and a positioning shaft movably sleeved in the middle of the fixing frame. The bottom of the positioning shaft is fixedly connected to a stainless steel turbine, and the stainless steel turbine is suspended in the air collecting cylinder. Fixing rods are evenly and spacedly fixedly connected to the side wall of the positioning shaft outside the top port of the air collecting cylinder. The ends of the fixing rods are fixedly connected to clamping arms. An annular plate is movably sleeved on the outer wall of the clamping arms. The annular plate is coaxially arranged with the positioning shaft. Stainless steel balls are evenly and spacedly movably embedded in the top adjacent to the middle hole of the annular plate. Flow equalizing holes are evenly and spacedly opened on the annular plate outside the clamping arms and the stainless steel balls. Limit grooves are respectively opened at the top edges of the annular plate, and the limit grooves correspond to the clamping arms.

[0022] Further, the clamping arm includes a fixing plate fixedly connected to the end of the fixing rod and a deflecting strip movably hinged to the top of the fixing plate. The annular plate is movably sleeved on the outer wall of the fixing plate. An inner groove is formed at the top of the deflecting strip. Movable shells are respectively and movably arranged on the inner walls of both sides of the inner groove. Auxiliary balls are movably clamped between adjacent movable shells. A U-shaped bracket is fixedly connected to the outer wall of the fixing plate close to the limiting groove. A lever is movably sleeved on the outer wall of the end cross bar of the U-shaped bracket. The top of the lever is movably connected to a movable connecting rod. The end of the movable connecting rod is movably connected to the side wall of the deflecting strip. A reset spring is fixedly connected between the lever below the U-shaped bracket and the side wall of the fixing plate. The bottom of the lever is movably connected to a slider, and the lower end of the slider is movably engaged in the limiting groove.

[0023] Further, when the reset spring maintains a normal diastolic state, the fixing plate and the deflecting strip are in the same vertical plane. At this time, the top of the lever is inclined away from the deflecting strip, and mounting grooves are uniformly spaced on the outer wall of the deflecting strip away from the lever. Heat collecting covers are fixedly installed in the mounting grooves.

[0024] Further, in the step S4, when the temperature in the composite heating furnace approaches the target homogenization treatment temperature of the glass cup, the control system dynamically adjusts the powers of the resistance wire heating element, the infrared heater, and the microwave generator according to the data fed back by the temperature sensor. The implementation steps are as follows:

[0025] 1.) Calculate the temperature change rate

[0026]

[0027] 2.) Adjust the power of the resistance wire heating element

[0028]

[0029] 3.) Adjust the power of the infrared heater

[0030]

[0031] 4.) Adjust the power of the microwave generator

[0032]

[0033] Wherein, Tcurrent represents the average temperature in the furnace detected by the current temperature sensor; Ttarget represents the target homogenization temperature, which is a known constant; Terror represents the temperature error, and Terror = Tcurrent - Ttarget; Pr, Pi, and Pm are the current powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Prmax, Pimax, and Pmmax are the maximum powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Prmin, Pimin, and Pmmin are the minimum powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Kp, Ki, and Km are the proportional gain coefficients of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Kd represents the differential gain coefficient, which is used to consider the temperature change rate; Δt represents the time interval, which is used to calculate the temperature change rate; Tprev represents the temperature at the previous moment, which is used to calculate the temperature change rate; Ir, Ii, and Im are the integral terms of the resistance wire heating element, the infrared heater, and the microwave generator respectively, and their initial values are 0.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] A uniform heating control method for homogenizing glass cups proposed by the present invention, after placing the glass cups in the composite heating furnace through a heat-resistant tray, uses the resistance wire heating element to quickly increase the temperature in the furnace in the early stage to heat the glass cups, and then in the middle stage, the infrared heater cooperates with the resistance wire heating element to heat the glass cups synchronously to ensure that the surfaces of all glass cups can receive uniform infrared radiation; when the temperature approaches the target homogenization temperature, the microwave generator is started to generate microwaves to penetrate and heat the glass cups, and the microwaves are used to excite the molecular vibration inside the glass to generate heat, making the temperature inside and on the surface of the glass cups more uniform. By using the cooperation of the three heating methods, the temperature sensor monitors the temperature in the furnace in real time, and the control system dynamically adjusts the heating power according to the preset temperature curve and algorithm to ensure that the overall temperature of the glass cups accurately reaches the set value; effectively solves the problem of uneven heat distribution in the traditional heating method, makes the glass cups heat more evenly, and thus improves the finished product quality of the glass cups. Description of the Drawings

[0036] Figure 1 It is the overall flowchart of the present invention;

[0037] Figure 2 It is the flowchart of the preparation stage of the present invention;

[0038] Figure 3 It is the flowchart of the cooling stage of the present invention;

[0039] Figure 4 It is the schematic structural diagram of the heat-resistant tray of the present invention;

[0040] Figure 5 Schematic diagram of the clamping member structure of the present invention;

[0041] Figure 6 Schematic diagram of the structure of the clamping arm of the present invention in the initial state;

[0042] Figure 7 Schematic diagram of the structure of the clamping arm of the present invention in the working state;

[0043] Figure 8 Schematic diagram of the assembly structure of the deflection bar and the heat collecting cover of the present invention.

[0044] In the figure: 1, stainless steel flat plate; 11, first sleeve; 12, second sleeve; 13, telescopic support; 2, air collecting cylinder; 3, clamping member; 31, fixing frame; 32, positioning shaft; 33, stainless steel turbine; 34, annular plate; 341, stainless steel ball; 342, flow equalizing hole; 343, limiting groove; 35, clamping arm; 351, fixing plate; 352, deflection bar; 3521, installation groove; 3522, heat collecting cover; 353, inner groove; 354, movable shell; 355, auxiliary ball; 356, U-shaped bracket; 3561, lever; 3562, return spring; 357, movable connecting rod; 358, slider; 4, glass cup body. Detailed implementation manners

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] In order to solve the problem that the existing glass heating control method using a single resistance wire for heating easily causes uneven heat distribution, resulting in uneven heating of the glass cup and affecting its finished product quality, please refer to Figures 1 - 3 , and the following preferred technical solutions are provided:

[0047] A uniform heating control method for homogeneous treatment of glass cups, including the following implementation steps:

[0048] Step 1: Preparation stage, place the glass cups to be homogenized neatly on the heat-resistant tray, keep an appropriate distance and check the glass cups. After the check is completed, start the composite heating furnace in the heating system and debug it;

[0049] S101: Prepare the glass cups. Neatly place the glass cups to be homogenized at the designated positions on the heat-resistant tray, leaving gaps between adjacent glass cups to avoid contact. At the same time, check whether the glass cups have obvious defects or damages, and reject the unqualified glass cups.

[0050] S102: Prepare the equipment. Turn on the homogenization heating system, including equipment such as a composite heating furnace, a circulation fan, and a temperature sensor, to ensure that the equipment is in normal working condition. Enter the corresponding basic parameters in the control system according to the production batch and type of the glass cups, such as the approximate size of the glass cups, the expected number of processed cups, etc.

[0051] Step 2: Initial heating stage. Start the resistance wire heating element and operate it at the maximum power to rapidly increase the temperature inside the composite heating furnace. During this process, the temperature sensor continuously monitors the average temperature inside the furnace. The hot air circulates evenly inside the furnace under the action of the circulation fan, and the heat-resistant tray is used to guide the hot air flow to pass through each glass cup to accelerate the heating process of the glass cups.

[0052] Step 3: Intermediate transition heating stage. When the temperature inside the composite heating furnace reaches the preset threshold (such as 80% close to the softening temperature of the glass cup), the control system reduces the power of the resistance wire heating element, and at the same time starts the infrared heater. The hot air circulation continues. The resistance wire heating element and the infrared heater act together to heat the glass cups. When heating, the infrared heater automatically adjusts the radiation angle and power according to the placement position of the glass cups and the temperature distribution inside the furnace to ensure that each glass cup surface can receive uniform infrared radiation.

[0053] Step 4: Final precise heating stage. When the temperature inside the composite heating furnace is close to the target homogenization treatment temperature of the glass cup (such as 280 °C), reduce the power of the resistance wire heating element and the infrared heater, and start the microwave generator to generate microwaves to penetrate the glass cups, exciting the molecular vibration inside the glass to generate heat, making the temperature inside and on the surface of the glass cups more uniform. In this stage, the three heating methods cooperate with each other, and the power is dynamically adjusted according to the data fed back by the temperature sensor to ensure that the overall temperature of the glass cups accurately reaches the set value. At the same time, the control system continuously monitors the temperature change and maintains the temperature inside the furnace within the allowable fluctuation range according to the preset temperature curve and algorithm.

[0054] In Step 4, when the temperature inside the composite heating furnace is close to the target homogenization treatment temperature of the glass cup, the control system dynamically adjusts the power of the resistance wire heating element, the infrared heater, and the microwave generator according to the data fed back by the temperature sensor. The implementation steps are as follows:

[0055] 1.) Calculate the temperature change rate

[0056]

[0057] 2.) Adjust the power of the resistance wire heating element

[0058]

[0059] 3.) Adjust the power of the infrared heater

[0060]

[0061] 4.) Adjust the power of the microwave generator

[0062]

[0063] Wherein, Tcurrent represents the average temperature in the furnace detected by the current temperature sensor; Ttarget represents the target homogenization treatment temperature, which is a known constant; Terror represents the temperature error, and Terror = Tcurrent - Ttarget; Pr, Pi, and Pm are the current powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Prmax, Pimax, and Pmmax are the maximum powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Prmin, Pimin, and Pmmin are the minimum powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Kp, Ki, and Km are the proportional gain coefficients of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Kd represents the differential gain coefficient, which is used to consider the temperature change rate; Δt represents the time interval, which is used to calculate the temperature change rate; Tprev represents the temperature at the previous moment, which is used to calculate the temperature change rate; Ir, Ii, and Im are the integral terms of the resistance wire heating element, the infrared heater, and the microwave generator respectively, and their initial values are 0.

[0064] Step Five: Insulation stage. When the glass cup reaches the target homogenization treatment temperature, the control system keeps the powers of the resistance wire heating element, the infrared heater, and the microwave generator unchanged, and maintains the temperature stable within the set insulation temperature range (such as 290°C ± 10°C). The circulation fan keeps running, and the temperature sensor continuously monitors the temperature in the furnace and the temperatures of the glass cups at various positions. If there is a temperature deviation, the control system timely adjusts the heating power for compensation;

[0065] Step Six: Waste heat recovery and utilization stage. The hot air discharged from the composite heating furnace during the insulation stage for homogenization treatment is preheated and recovered through the heat exchanger. When the hot air is discharged, it transfers heat to the cold water or air flowing through the heat exchanger. The preheated water or air is collected for preheating the glass cups about to enter the composite heating furnace or supplied to other production processes that require heating, thereby improving the energy utilization rate and reducing energy waste;

[0066] Step 7: Cooling stage. When the heat preservation time reaches the set value (e.g., at least 2 hours), stop the operation of all heating devices, quickly cool down the glass cups, and after the cooling is completed, open the composite heating furnace to take out the glass cups from the heat-resistant tray for subsequent quality inspection and packaging processes.

[0067] S701: Start natural cooling. When the heat preservation time reaches the set value, immediately stop the operation of all heating devices and let the glass cups cool naturally in the composite heating furnace. At this time, the circulation fan continues to run at a low speed to keep the air in the furnace circulating, promoting heat dissipation.

[0068] S702: Accelerate cooling. After natural cooling for a period of time, accelerate the cooling process by introducing cold air through the blower. The cold air enters the composite heating furnace through the intake pipe and is guided by the circulation fan to flow through each glass cup. When the temperature drops to the safe range below 70°C, the cooling stage ends.

[0069] Specifically, first use the resistance wire heating element to quickly increase the temperature inside the composite heating furnace, and then automatically adjust the radiation angle and power of the infrared heater according to the placement position of the glass cups and the temperature distribution inside the furnace to ensure that each glass cup surface can receive uniform infrared radiation; when the temperature approaches the target homogenization treatment temperature, start the microwave generator to generate microwaves for penetrating heating of the glass cups, and use the microwaves to excite the molecular vibration inside the glass to generate heat, making the temperature inside and on the surface of the glass cups more uniform; use the three heating methods in cooperation. At the same time, the temperature inside the furnace is monitored in real time through the temperature sensor, and the heating power is dynamically adjusted according to the preset temperature curve and algorithm to ensure that the overall temperature of the glass cups accurately reaches the set value; effectively solve the problem of uneven heat distribution in the traditional heating method, make the glass cups heat more evenly, and thus improve the finished product quality of the glass cups.

[0070] As Figure 1 and Figures 4 - 8 shown, in order to enable the hot air flow to make full and uniform contact with the glass cup body 4 to be homogenized and heated, so as to ensure the uniform heating effect of the glass cup body 4, the present embodiment provides the following technical solutions:

[0071] The heat-resistant tray includes a stainless-steel flat plate 1 with a non-square structure. At the four corners of the upper and lower ends of the stainless-steel flat plate 1, a first sleeve 11 and a second sleeve 12 are integrally formed and processed respectively. A telescopic support 13 is threadedly connected inside the first sleeve 11 and the second sleeve 12. The telescopic support 13 is used to adjust the distance between adjacent upper and lower stainless-steel flat plates 1 when the stainless-steel flat plates 1 are stacked, so as to place glass cups of different heights. And evenly spaced fixed connection wind-collecting cylinders 2 are arranged on the top of the stainless-steel flat plate 1. The bottom port of the wind-collecting cylinder 2 extends to the bottom of the stainless-steel flat plate 1. A clamping member 3 is movably arranged above the top port of the wind-collecting cylinder 2. The clamping member 3 is used to clamp the glass cup body 4 to be heated for homogenization treatment.

[0072] The clamping member 3 includes a fixing frame 31 fixedly connected between the inner walls of the wind-collecting cylinder 2 and a positioning shaft 32 movably sleeved in the middle of the fixing frame 31. A stainless-steel turbine 33 is fixedly connected to the bottom of the positioning shaft 32. The stainless-steel turbine 33 is suspended inside the wind-collecting cylinder 2. On the side wall of the positioning shaft 32 outside the top port of the wind-collecting cylinder 2, fixing rods are evenly spaced and fixedly connected. The end of the fixing rod is fixedly connected with a clamping arm 35. An annular plate 34 is movably sleeved on the outer wall of the clamping arm 35. The fixing rod is located below the annular plate 34. The annular plate 34 is coaxially arranged with the positioning shaft 32. At the top of the adjacent part of the middle hole of the annular plate 34, stainless-steel balls 341 are evenly spaced and movably fitted. The stainless-steel balls 341 are of a hollow structure. Flow equalizing holes 342 are evenly spaced on the annular plate 34 outside the clamping arm 35 and the stainless-steel balls 341. Limiting grooves 343 are respectively arranged at the top edge of the annular plate 34. The limiting grooves 343 are arranged corresponding to the clamping arm 35.

[0073] The clamping arm 35 includes a fixing plate 351 fixedly connected to the end of the fixing rod and a deflecting strip 352 movably hinged to the top of the fixing plate 351. The annular plate 34 is movably sleeved on the outer wall of the fixing plate 351. An inner groove 353 is opened at the top of the deflecting strip 352. On the inner walls of both sides of the inner groove 353, movable shells 354 are respectively movably arranged. An auxiliary ball 355 is movably clamped between adjacent movable shells 354. The movable shells 354 and the auxiliary balls 355 and other structures are all stainless-steel components. The edge of the auxiliary ball 355 extends to the outside of the edge of the inner groove 353. A U-shaped bracket 356 is fixedly connected to the outer wall of the fixing plate 351 on the side close to the limiting groove 343. A lever 3561 is movably sleeved on the outer wall of the end cross bar of the U-shaped bracket 356. The top of the lever 3561 is movably connected with a movable connecting rod 357. The end of the movable connecting rod 357 is movably connected to the side wall of the deflecting strip 352. And a return spring 3562 is fixedly connected between the lever 3561 below the U-shaped bracket 356 and the side wall of the fixing plate 351. The bottom of the lever 3561 is movably connected with a slider 358. The lower end of the slider 358 is movably clamped in the limiting groove 343.

[0074] When the reset spring 3562 maintains a normal diastolic state, the fixed plate 351 and the deflection bar 352 are in the same vertical plane. At this time, the top end of the lever 3561 is tilted away from the deflection bar 352, and mounting grooves 3521 are evenly spaced on the outer wall of the deflection bar 352 on the side away from the lever 3561. A heat collection cover 3522 is fixedly installed in the mounting groove 3521.

[0075] Specifically, place the glass cup body 4 above the stainless steel ball 341 at the top of the annular plate 34. The glass cup body 4 drives the annular plate 34 to slide downward on the outer wall of the fixed plate 351 by gravity until the fixed rod at the bottom of the annular plate 34 is close to the top port of the air collecting cylinder 2. When the annular plate 34 slides down along the fixed plate 351, it drives the lever 3561 to deflect, causing the slider 358 to slide away from the fixed plate 351 in the limit groove 343 until the inclined lever 3561 deflects to a vertical state. During this process, the lever 3561 uses the movable connecting rod 357 to push the top end of the deflection bar 352 to deflect and approach the glass cup body 4, so that the auxiliary ball 355 at the top end of the deflection bar 352 fits on the outer wall of the glass cup body 4, thereby automatically completing the placement and clamping of the glass cup body 4. At this time, the glass cup body 4 is located at the middle hole of the annular plate 34, and the flow equalizing holes 342 on the annular plate 34 outside the middle hole are evenly distributed outside the flow equalizing holes 342. After stacking the glass cup body 4 on the composite heating furnace with the stainless steel flat plate 1, when the circulating fan in the composite heating furnace drives the hot air flow to flow upward from the bottom of the stainless steel flat plate 1 in a cycle, after the hot air flow is concentrated and impacts the glass cup body 4 from the air collecting cylinder 2 at the bottom of the stainless steel flat plate 1, the hot air flow contacts the bottom of the glass cup body 4 through the middle hole of the annular plate 34 and then disperses outward, and then flows upward along the outer wall of the glass cup body 4. The flow equalizing holes 342 outside the glass cup body 4 evenly spray out part of the hot air flow to form a ring around the inner air flow, preventing it from dispersing excessively, so as to better attach the hot air flow to the outer wall of the glass cup body 4. At the same time, the rising hot air flow contacts the heat collection cover 3522 on the inclined deflection bar 352, and the hot air flow in the air collecting cylinder 2 impacts the stainless steel turbine 33. Then, under the action of the positioning shaft 32 and the stainless steel ball 341, the annular plate 34 is pushed to rotate at the bottom of the glass cup body 4. The heat collection cover 3522 in turn drives the heat of the hot air flow to be concentrated on the glass cup body 4 through the rotation of the annular plate 34, further improving the uniform heating effect of the hot air flow on the glass cup body 4 and ensuring the uniform heating effect of the homogeneous treatment of the glass cup body 4, which is convenient to use.

[0076] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0077] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A uniform heating control method for homogenization treatment of a glass cup, characterized in that, It includes the following implementation steps: S1: Preparation stage: Neatly place the glass cups to be homogenized on the heat-resistant tray, maintain an appropriate spacing and inspect the glass cups. After the inspection is completed, start the composite heating furnace in the heating system and debug it; S2: Initial heating stage: Start the resistance wire heating element and operate it at the rated power to rapidly increase the temperature inside the composite heating furnace. During this process, the temperature sensor continuously monitors the average temperature inside the furnace, and the hot air circulates evenly inside the furnace under the action of the circulation fan. The heat-resistant tray is used to guide the hot air flow to pass through each glass cup; S3: Intermediate transition heating stage: When the temperature inside the composite heating furnace reaches the preset threshold, the control system reduces the power of the resistance wire heating element and simultaneously starts the infrared heater. The hot air circulation continues to be maintained, and the resistance wire heating element and the infrared heater act together to heat the glass cups. When heating, the infrared heater automatically adjusts the radiation angle and power according to the placement position of the glass cups and the temperature distribution inside the furnace; S4: Final precise heating stage: When the temperature inside the composite heating furnace approaches the target homogenization treatment temperature of the glass cups, reduce the power of the resistance wire heating element and the infrared heater, and start the microwave generator to generate microwaves to penetrate the glass cups; S5: Heat preservation stage: When the glass cups reach the target homogenization treatment temperature, the control system controls the power of the resistance wire heating element, the infrared heater, and the microwave generator to remain unchanged, and keeps the temperature stable within the set heat preservation temperature range. The circulation fan continues to operate, and the temperature sensor continuously monitors the temperature inside the furnace and the temperature of the glass cups at each position.

2. The uniform heating control method for homogenization treatment of a glass cup according to claim 1, characterized in that: After the completion of the S5 step, it enters the waste heat recovery and utilization stage of the glass cup heating control, that is, the hot air discharged from the composite heating furnace during the homogenization treatment in the heat preservation stage is preheated and recovered through the heat exchanger. When the hot air is discharged, it transfers heat to the cold water or air flowing through the heat exchanger. The preheated water or air is collected for preheating the glass cups about to enter the composite heating furnace or supplied to other production processes that require heating.

3. The uniform heating control method for homogeneous treatment of a glass cup according to claim 2, characterized in that: After the waste heat recovery and utilization stage of the glass cup heating control is carried out, it enters the cooling stage, that is, when the heat preservation time reaches the set value, stop the operation of all heating equipment, rapidly cool down the glass cups. After the cooling is completed, open the composite heating furnace and take out the glass cups from the heat-resistant tray for subsequent quality inspection and packaging processes.

4. The uniform heating control method for homogenizing treatment of a glass cup as described in claim 3, wherein: The cooling stage includes the following implementation steps: I. Natural cooling start: Immediately stop the operation of all heating equipment when the heat preservation time reaches the set value, and let the glass cups naturally cool inside the composite heating furnace. At this time, the circulation fan continues to operate at a low speed; II. Cooling acceleration: After natural cooling for a period of time, accelerate the cooling process by introducing cold air through the blower. The cold air enters the composite heating furnace through the air inlet pipe, and under the action of the circulation fan, the cold air is guided to flow through each glass cup. When the temperature drops below the safe range of 70°C, the cooling stage ends.

5. The uniform heating control method for homogenization treatment of a glass cup as described in claim 1, characterized in that: In the S1 step, the specific implementation steps of the preparation stage are as follows: S101: Preparation of glass cups: Neatly place the glass cups to be homogenized at the designated positions on the heat-resistant tray, leaving gaps between adjacent glass cups to prevent contact with each other. At the same time, check whether the glass cups have obvious defects or damages, and reject the unqualified glass cups. S102: Equipment preparation: Turn on the homogenization heating system, including equipment such as a composite heating furnace, a circulation fan, and a temperature sensor, to ensure that the equipment is in normal working condition. Input the corresponding basic parameters into the control system according to the production batch and type of the glass cups.

6. The uniform heating control method for homogeneous treatment of a glass cup as described in claim 1, characterized in that: The heat-resistant tray includes a stainless-steel flat plate (1) and first sleeves (11) fixedly connected to the four corners of the top of the stainless-steel flat plate (1). Second sleeves (12) are respectively fixedly connected to the four corners of the top and bottom of the stainless-steel flat plate (1). Telescopic struts (13) are movably sleeved in the first sleeves (11) and the second sleeves (12). The air-collecting cylinders (2) are evenly and spacedly fixedly connected to the top of the stainless-steel flat plate (1). The bottom ports of the air-collecting cylinders (2) extend to the bottom of the stainless-steel flat plate (1). A clamping member (3) is movably arranged above the top ports of the air-collecting cylinders (2). The clamping member (3) is used to clamp the glass cup body (4) to be homogenized and heated.

7. The uniform heating control method for homogeneous treatment of a glass cup as described in claim 6, characterized in that: The clamping member (3) is fixedly connected to a fixing frame (31) between the inner walls of the air-collecting cylinder (2) and a positioning shaft (32) movably sleeved in the middle of the fixing frame (31). A stainless-steel turbine (33) is fixedly connected to the bottom of the positioning shaft (32). The stainless-steel turbine (33) is suspended in the air-collecting cylinder (2). Fixing rods are evenly and spacedly fixedly connected to the side wall of the positioning shaft (32) outside the top port of the air-collecting cylinder (2). A clamping arm (35) is fixedly connected to the end of the fixing rod. An annular plate (34) is movably sleeved on the outer wall of the clamping arm (35). The annular plate (34) is coaxially arranged with the positioning shaft (32). Stainless-steel balls (341) are evenly and spacedly movably fitted at the top adjacent to the middle hole of the annular plate (34). Flow equalizing holes (342) are evenly and spacedly opened on the annular plate (34) outside the clamping arm (35) and the stainless-steel balls (341). Limiting grooves (343) are respectively opened at the top edge of the annular plate (34). The limiting grooves (343) are arranged corresponding to the clamping arms (35).

8. The uniform heating control method for homogeneous treatment of a glass cup as described in claim 7, characterized in that: The clamping arm (35) includes a fixing plate (351) fixedly connected to the end of a fixing rod and a deflection bar (352) movably hinged to the top of the fixing plate (351). An annular plate (34) is movably sleeved on the outer wall of the fixing plate (351). An inner groove (353) is formed at the top of the deflection bar (352). Moving shells (354) are respectively and movably arranged on the inner walls of both sides of the inner groove (353). An auxiliary ball (355) is movably clamped between adjacent moving shells (354). A U-shaped bracket (356) is fixedly connected to the outer wall of the fixing plate (351) on the side close to the limiting groove (343). A lever (3561) is movably sleeved on the outer wall of the end cross bar of the U-shaped bracket (356). The top of the lever (3561) is movably connected to a moving connecting rod (357). The end of the moving connecting rod (357) is movably connected to the side wall of the deflection bar (352). A return spring (3562) is fixedly connected between the lever (3561) below the U-shaped bracket (356) and the side wall of the fixing plate (351). The bottom of the lever (3561) is movably connected to a slider (358). The lower end of the slider (358) is movably engaged in the limiting groove (343).

9. The uniform heating control method for homogeneous treatment of a glass cup as described in claim 8, characterized in that: When the return spring (3562) maintains a normal diastolic state, the fixing plate (351) and the deflection bar (352) are in the same vertical plane. At this time, the top of the lever (3561) is inclined away from the deflection bar (352). And mounting grooves (3521) are evenly spaced on the outer wall of the side of the deflection bar (352) away from the lever (3561). A heat collecting cover (3522) is fixedly installed in the mounting groove (3521).

10. A uniform heating control method for homogeneous treatment of a glass cup as described in claim 1, characterized in that: In the step S4, when the temperature in the composite heating furnace is close to the target homogenization treatment temperature of the glass cup, the control system dynamically adjusts the powers of the resistance wire heating element, the infrared heater and the microwave generator according to the data fed back by the temperature sensor. The implementation steps are as follows: 1.) Calculate the temperature change rate 2.) Adjust the power of the resistance wire heating element I r = I r + K i * T error * Δt 3.) Adjust the power of the infrared heater I i = I i + K i * T error * Δt 4.) Adjust the power of the microwave generator I m = I m + K i * T error * Δt Where, Tcurrent represents the average temperature in the furnace detected by the current temperature sensor; Ttarget represents the target homogenization treatment temperature, which is a known constant; Terror represents the temperature error, and Terror = Tcurrent - Ttarget; Pr, Pi, and Pm are the current powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Prmax, Pimax, and Pmmax are the maximum powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Prmin, Pimin, and Pmmin are the minimum powers of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Kp, Ki, and Km are the proportional gain coefficients of the resistance wire heating element, the infrared heater, and the microwave generator respectively; Kd represents the differential gain coefficient, which is used to consider the temperature change rate; Δt represents the time interval, which is used to calculate the temperature change rate; Tprev represents the temperature at the previous moment, which is used to calculate the temperature change rate; Ir, Ii, and Im are the integral terms of the resistance wire heating element, the infrared heater, and the microwave generator respectively, and the initial values are 0.

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