A method for controlling the winding of an insulation film of a heating apparatus and a heating apparatus

Abstract

The application discloses a heating equipment isolation film winding control method and a heating equipment, which are used for reducing the pollution of products during heating. The heating equipment comprises a heating main body and an isolation film winding structure. The method comprises the following steps: obtaining a processing frequency, generating a film replacement instruction when the processing frequency is equal to a film replacement frequency, obtaining a working state of the heating main body according to the film replacement instruction, controlling the isolation film winding structure to execute the film replacement instruction according to the film replacement instruction when the working state is in an execution working task and no task action is executed, controlling a separation assembly to cooperate with a lifting shaft to lift the isolation film, so that the isolation film is separated from a product surface, obtaining an offset parameter of the isolation film through a sensor of a deviation correction assembly, and controlling a feeding assembly and a collecting assembly to work synchronously when the offset parameter is less than a preset correction parameter, so that the isolation film is replaced while maintaining a tension state.

Description

Technical Field

[0001] This application relates to the field of industrial equipment, and more particularly to a method for controlling the winding of a heat-generating membrane and a heating device. Background Technology

[0002] In high-precision manufacturing industries such as semiconductor component packaging, thermosetting of precision electronic materials, and thermoforming of optical devices, the requirements for cleanliness and molding accuracy in high-temperature processing are constantly increasing. Heating equipment with separate upper and lower heating chambers has become the mainstream core equipment in these high-precision, high-temperature processing scenarios due to its convenient loading, unloading, and chamber opening and closing operations. In actual production and processing, the products to be processed are placed directly in the high-temperature environment of the heating chamber, which easily leads to adhesion to the inner wall of the chamber and the bearing surface. At the same time, they are also subject to contamination from high-temperature volatiles in the chamber and environmental impurities introduced during the opening and closing of the chamber, directly causing surface defects in the products. This results in a significant decrease in processing yield and batch consistency, failing to meet the process requirements of high-precision processing.

[0003] Existing technologies generally address the above problems by spraying an anti-stick coating on the inner wall of the heating chamber, optimizing the chamber's exhaust and sealing structure, and improving the cleanliness level of the production environment. However, these methods can only alleviate the probability of product adhesion and contamination at the chamber environment level. They cannot provide direct and effective protection for the product surface and cannot fundamentally solve the problems of contamination and adhesion during high-temperature processing. This severely restricts the improvement of equipment processing performance and automated production efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a method for controlling the wrapping of a heat-generating membrane and a heat-generating device, which reduces the risk of product contamination during heating.

[0005] The technical solution provided in this application is described below:

[0006] The first aspect of this application provides a heating device, comprising:

[0007] Heating body with insulating film winding structure;

[0008] The heating body includes a heating cavity and a product placement rack. The heating cavity includes an upper cavity and a lower cavity, which are separately disposed. The product placement rack is disposed inside the heating cavity.

[0009] The isolation membrane winding structure includes a feeding assembly, a receiving assembly, a correction assembly, and a separation assembly;

[0010] The feeding assembly and the receiving assembly are arranged opposite to each other on both sides of the heating body and connected by an isolation membrane;

[0011] The separation assembly includes a separation roller, a lifting shaft, and a support frame. The support frame is located on opposite sides of the heating body that are different from the receiving assembly and the feeding assembly. The support frame is used to support the fixing frame of the separation roller. The fixing frame is connected to the support frame through the lifting shaft.

[0012] The correction component is disposed between the heating body and the receiving component.

[0013] Optionally, an isolation membrane limiting clamp is provided inside the heating chamber. The isolation membrane limiting clamp is disposed opposite to each other on the outer edge of the product placement rack, and the distance between the isolation membrane limiting clamps is less than the width of the isolation membrane.

[0014] Optionally, the isolation membrane winding structure is provided with a feeding side guide wheel group and a receiving side guide wheel group. The feeding side guide wheel group is arranged vertically and staggered between the feeding component and the heating body, and the receiving side guide wheel group is arranged vertically and staggered between the correction component and the receiving component. The isolation membrane is sequentially wound around each guide wheel to form a tensioned membrane path.

[0015] Optionally, a membrane cleaning mechanism is also provided between the feeding assembly and the heating body. The membrane cleaning mechanism is provided with an upper and lower opposing dust cleaning roller group, and the roller surface of the dust cleaning roller group rolls in contact with the upper and lower surfaces of the isolation membrane respectively.

[0016] Optionally, the surface of the separating rubber roller is uniformly provided with several pressure-reducing grooves along the axial direction.

[0017] A second aspect of this application provides a method for controlling the winding of a heat-insulating film in a heating device, the method comprising:

[0018] The number of processing steps is obtained, and a membrane replacement instruction is generated when the number of processing steps equals the number of membrane replacement steps.

[0019] The working status of the heating element is obtained according to the membrane replacement command;

[0020] When the working state is in the process of performing a work task and no task action is performed, the isolation membrane winding structure is controlled to execute the membrane replacement instruction according to the membrane replacement instruction.

[0021] The separation component is controlled to work with the lifting shaft to raise the isolation membrane, thereby separating the isolation membrane from the product surface;

[0022] The offset parameters of the isolation membrane are obtained through the sensors of the correction component;

[0023] When the offset parameter is less than the preset correction parameter, the feeding component and the receiving component are controlled to work synchronously, so that the isolation membrane is kept in a taut state while the isolation membrane is replaced.

[0024] Optionally, after obtaining the offset parameters of the isolation membrane through the sensor of the correction component, the method further includes:

[0025] When the offset parameter is greater than the preset correction parameter, a correction command is generated based on the offset parameter, so that the correction component corrects the position of the isolation membrane according to the correction command until the offset parameter is less than the correction parameter.

[0026] Optionally, generating the correction instruction based on the offset parameter includes:

[0027] The offset parameters are analyzed to obtain the lateral offset amount and lateral offset velocity of the isolation membrane;

[0028] The real-time operating temperature of the heating chamber and the real-time operating tension of the isolation membrane at the current correction component are obtained.

[0029] Based on the real-time operating temperature and the preset membrane expansion characteristic model, calculate the thermal deformation compensation coefficient at the current temperature;

[0030] The lateral offset, the lateral offset speed, the real-time running tension, and the thermal deformation compensation coefficient are input into a preset correction dynamic compensation model to calculate the target deflection angle of the correction component and generate the correction command containing the target deflection angle.

[0031] The calculation formula for the dynamic compensation model for course correction is:

[0032] θ=(kp ΔW+kd vw) β (F0 / Fr), β=[1+α(Tr-T0)];

[0033] Where θ is the target deflection angle, ΔW is the lateral offset, vw is the lateral offset velocity, kp is the preset proportional gain coefficient, kd is the differential gain coefficient, β is the thermal deformation compensation coefficient, α is the linear expansion coefficient of the isolation membrane, Tr is the real-time operating temperature, T0 is the reference ambient temperature, Fr is the real-time operating tension, and F0 is the reference tension.

[0034] Optionally, after controlling the feeding component and the receiving component to work synchronously when the offset parameter is less than a preset correction parameter, the method further includes:

[0035] Obtain the material parameters of the separator membrane, including the total length of the separator membrane, the total length offset, the consumption per cycle, and the tension allowance. The tension allowance is the redundant membrane length that maintains the separator membrane in a taut state to prevent deformation under high temperature thermal expansion.

[0036] The number of membrane replacements is obtained, and the total consumption of the separator membrane is calculated based on the material parameters. The formula for calculating the consumption is: Q = N × (L + ΔL) + ΔT.

[0037] Where Q is the consumption amount, N is the number of membrane replacements, L is the consumption per unit, ΔL is the tension allowance, and ΔT is the total length offset.

[0038] Optionally, after obtaining the number of membrane replacements and calculating the consumption of the total length of the separator membrane based on the material parameters, the method further includes:

[0039] The remaining usable length is calculated based on the consumption and the rated total length of a single roll of release film;

[0040] When the remaining available length is greater than the preset length, the feeding component and the receiving component are controlled to perform a film changing action according to the consumption amount per cycle, and the preset length is a preset value greater than the consumption amount per cycle.

[0041] When the remaining available length is less than the preset length, a membrane failure warning command is generated.

[0042] Optionally, before obtaining the number of processing steps, the method further includes:

[0043] Read the timer's time parameter; when the timer's time parameter is greater than a preset parameter, generate a membrane replacement command.

[0044] Once the membrane replacement command is executed, the timer's time parameter is reset.

[0045] As can be seen from the above technical solutions, this application has the following advantages:

[0046] By setting a membrane winding structure on the heating equipment and performing membrane lifting separation, offset detection, and synchronous membrane replacement control in conjunction with the equipment's working status when the membrane replacement conditions are met, the membrane can be kept taut and run stably during processing, reducing the impact of membrane offset on the membrane replacement process, thereby reducing the risk of product contamination during processing and improving processing stability. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the structure of one embodiment of the heating device in this application;

[0049] Figure 2 This is a schematic diagram of the structure of one embodiment of the separation component of the heating device in this application;

[0050] Figure 3 This is a schematic diagram of the internal structure of the lower cavity of the heating device in this application;

[0051] Figure 4 This is a schematic diagram of an embodiment of the film-moving state of the heating device in this application;

[0052] Figure 5 This is a schematic flowchart of an embodiment of the isolation film winding control method for heating equipment in this application;

[0053] Figure 6 This is a schematic flowchart of another embodiment of the isolation film winding control method for the heating device in this application.

[0054] Figure 7 This is a schematic flowchart of an embodiment of the process for generating correction instructions in the isolation film winding control method for heating equipment in this application. Detailed Implementation

[0055] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0056] Please see Figures 1 to 4 This application first provides an embodiment of a heating device, which includes:

[0057] Heating body with insulating film winding structure;

[0058] The heating body includes a heating cavity 11 and a product placement rack 12. The heating cavity 11 includes an upper cavity 111 and a lower cavity 112, which are separately disposed. The product placement rack 12 is disposed inside the heating cavity 11.

[0059] The isolation membrane winding structure includes a feeding assembly 21, a receiving assembly 22, a correction assembly 23, and a separation assembly 24;

[0060] The feeding assembly 21 and the receiving assembly 22 are arranged opposite to each other on both sides of the heating body and connected by an isolation membrane;

[0061] The separation assembly 24 includes a separation roller 241, a lifting shaft 242, and a support frame 243. The support frame 243 is disposed on opposite sides of the heating body that are different from the receiving assembly 22 and the feeding assembly 21. The support frame 243 is used to support the fixing frame 244 of the separation roller 241. The fixing frame 244 is connected to the support frame 243 through the lifting shaft 242.

[0062] The correction component 23 is disposed between the heating body and the receiving component 22;

[0063] Specifically, the separating membrane is a strip-shaped film material continuously conveyed along a predetermined path, used to cover the product surface and form an isolation layer during processing. The separating roller 241 is a roller body used to lift the separating membrane; a flexible contact surface is formed on the outer periphery of the roller to reduce localized impact on the separating membrane during lifting. The alignment assembly 23 is a structural unit used to detect and adjust the lateral running position of the separating membrane. The lifting shaft 242 is an actuator that drives the separating roller 241 to move up and down. The fixing frame 244 is a load-bearing component that mounts the separating roller 241 and connects to the lifting shaft 242. The support frame 243 is a frame component that mounts the lifting shaft 242 and provides support and guidance for the fixing frame 244.

[0064] The feeding assembly 21 is located on one side of the heating body, and the take-up assembly 22 is located on the other side. The release film, after being output from the feeding assembly 21, traverses the heating body laterally and enters the take-up assembly 22 after leaving the heating body. This arrangement creates a continuous film path for the release film within the equipment, from the feeding side to the take-up side, and passes through the area where the product placement rack 12 is located, thus meeting the product surface coverage requirements. The feeding assembly 21 is used to mount the release film roll to be released, allowing the release film to be output from the feeding side towards the heating body; the take-up assembly 22 is used to pull and rewind the release film after it has passed the heating body, allowing the release film to move continuously along a predetermined path.

[0065] The web guiding component 23 is positioned between the heating body and the take-up component 22, along the path of the separator membrane after it leaves the heating body. This position allows the web guiding component 23 to detect and adjust the position of the separator membrane before it enters the take-up component 22, preventing the separator membrane from entering the winding area in an off-center state. With the web guiding component 23 positioned close to the exit side, any lateral positional changes in the separator membrane after passing through the heating area can be corrected promptly, thus contributing to the stability of the subsequent recycling process.

[0066] The separating assembly 24 is positioned on the opposite side of the feeding assembly 21 and the receiving assembly 22, i.e., in the corresponding areas on the front and rear sides of the heating body. The separating assembly 24 includes a separating roller 241, a lifting shaft 242, and a support frame 243. The support frame 243 consists of two sets of structures, one on each side of the heating body. A fixing frame 244 spans between the two support frames 243, and the separating roller 241 is mounted on the fixing frame 244. The fixing frame 244 is connected to the support frame 243 via the lifting shaft 242.

[0067] The lifting shaft 242 is arranged vertically. Driven by the lifting shaft 242, the fixed frame 244 moves up and down relative to the support frame 243, thereby causing the separating roller 241 to rise and fall. When the fixed frame 244 moves upward, the separating roller 241 presses against the release film and lifts it away from the product surface; when the fixed frame 244 moves downward, the separating roller 241 falls back, and the release film returns to its working position above the product. Because the separating roller 241 is mounted on the fixed frame 244, and the fixed frame 244 is supported by the support frames 243 on both sides, the movement trajectory of the separating roller 241 during the lifting process is relatively stable, which helps to ensure the consistency of the film lifting action.

[0068] The separating roller 241 extends along its own axial direction, and its effective length covers the area corresponding to the width of the release liner. This allows the separating roller 241 to provide relatively uniform support to the release liner in the width direction as it rises, enabling the release liner to separate from the product surface synchronously in the width direction and reducing the possibility of localized premature or delayed separation. Because the separating roller 241 uses a roller-type contact method, the release liner can still move relative to the roller surface during the lifting process, thereby reducing the frictional resistance experienced by the release liner during the separation stage.

[0069] In this embodiment, an isolation membrane limiting clamp 13 is provided inside the heating cavity 11. The isolation membrane limiting clamp 13 is disposed opposite to the outer edge of the product placement rack 12, and the distance between the isolation membrane limiting clamp 13 and the isolation membrane limiting clamp 13 is less than the width of the isolation membrane.

[0070] The separator membrane limiting clamps 13 are a set of limiting structures arranged opposite to each other. Their function is to constrain the lateral edge position of the separator membrane, so that the separator membrane maintains a relatively stable spreading state in the heating area.

[0071] The separator film limiting clamps 13 are located at the outer edge of the product placement rack 12 and are distributed on both sides of the product placement rack 12 along the direction of separator film movement. The distance between the separator film limiting clamps 13 is less than the width of the separator film. Therefore, when the separator film passes through the corresponding area, the two edges are respectively limited by the separator film limiting clamps 13.

[0072] The limiting position of the separator film limiting clamp 13 is set close to the outer area of ​​the product placement rack 12, so that the separator film is guided by the edge after entering the heating operation area. On the one hand, this helps to reduce the lateral displacement of the separator film caused by tension fluctuations under heating conditions, and on the other hand, it also helps to reduce the local warping, edge swinging or coverage deviation of the separator film, thereby improving the operational stability of the separator film inside the heating chamber 11.

[0073] In this embodiment, the isolation membrane winding structure is provided with a feeding side guide wheel group and a receiving side guide wheel group. The feeding side guide wheel group is arranged vertically and staggered between the feeding component 21 and the heating body, and the receiving side guide wheel group is arranged vertically and staggered between the correction component 23 and the receiving component. The isolation membrane sequentially passes around each guide wheel to form a tensioned membrane path.

[0074] The feeding-side guide wheel assembly is arranged between the feeding component 21 and the heating body, while the receiving-side guide wheel assembly is arranged between the correction component 23 and the receiving component 22. The guide wheel assemblies are used to change the running path of the separator film and to guide and stabilize its conveying posture. The staggered arrangement means that the guide wheels are alternately distributed in the height direction, causing the separator film to form a zigzag path after passing through guide wheels at different height positions. With this arrangement, after the separator film is output from the feeding component 21 on the feeding side, it is guided above the heating body via the feeding-side guide wheel assembly; after leaving the heating body and passing through the correction component 23, the separator film is then guided into the receiving component 22 via the receiving-side guide wheel assembly.

[0075] The tensioned film-walking path refers to the running path of the separator film, which remains under controlled tension throughout the conveying process. By staggering the vertical alignment of the guide rollers, the length of the separator film's wrapping path is increased, resulting in a more stable force distribution during film movement. Especially before and after the separator film enters the heating element, the guide rollers provide transitional guidance, thereby improving the flatness and continuity of the separator film as it crosses the heating element. The feed-side guide rollers and the collect-side guide rollers are respectively positioned on the film-laying and collect-up paths, creating a continuous and stable conveying channel for the separator film between the feed end, processing area, and collect end.

[0076] In this embodiment, a membrane cleaning mechanism 3 is also provided between the feeding component 21 and the heating body. The membrane cleaning mechanism 3 is provided with an upper and lower opposing dust cleaning roller group. The roller surface of the dust cleaning roller group rolls in contact with the upper and lower surfaces of the isolation membrane respectively.

[0077] The membrane cleaning mechanism 3 is used to pre-clean the surface of the separator membrane before it enters the heating body, thereby reducing the impact of membrane surface deposits on processing quality after entering the heating area. The dust-removing roller set refers to a group of cleaning rollers with adhesive dust-removing capabilities. The upper cleaning roller rolls in contact with the upper surface of the separator membrane, and the lower cleaning roller rolls in contact with the lower surface of the separator membrane. After being output from the feeding assembly 21, the separator membrane first passes through the membrane cleaning mechanism 3 before entering the heating body. During the separator membrane's operation, the upper and lower rollers simultaneously clean the separator membrane surface, removing dust, particles, and other impurities adhering to the membrane surface. Through the upper and lower opposing dust-removing roller sets, both sides of the separator membrane can be treated before entering the heating chamber, thereby reducing the likelihood of foreign matter remaining in the contact area between the separator membrane and the product.

[0078] In this embodiment, the surface of the separating rubber roller is uniformly provided with several pressure-reducing grooves along the axial direction.

[0079] The pressure-reducing grooves are recesses formed on the outer periphery of the roller surface, and each groove is spaced apart along the length of the separating roller 241. With the pressure-reducing grooves evenly distributed axially, the separating roller 241 can achieve a more uniform pressure release effect across its entire effective working width, making the force on the separator membrane more balanced in the width direction. This reduces localized indentations, tensile deformation, or sudden stress changes on the separator membrane during lifting, and also improves the smoothness of the separation action between the separator membrane and the product surface.

[0080] This embodiment achieves stable film changing by continuously laying a replaceable separator film between the product and the heating chamber, and coordinating with separation, correction, and feeding / rewinding structures. This structurally provides direct protection to the product surface, reducing adhesion and impurity attachment. By setting feeding and receiving components on both sides of the heating body, a stable film-walking path is formed for the separator film. The separation component lifts the separator film off the product surface before film changing to avoid friction during film changing. The correction component, located at the front end of the receiving section, can correct the film strip position before winding, thereby improving the continuity of film changing and the stability of film walking.

[0081] The heating device in the embodiments of this application has been described in detail above. The following will describe in detail a method for controlling the winding of the insulating film of a heating device.

[0082] Please see Figure 5 This application provides an embodiment of a method for controlling the winding of a heating device's insulating film, which includes:

[0083] S501. Obtain the number of processing steps; when the number of processing steps equals the number of film replacement steps, generate a film replacement command.

[0084] The control system updates the processing count after each round of processing and compares the current processing count with the preset film replacement count. When the processing count reaches the film replacement count, it indicates that the separator film currently covering the processing area has reached its predetermined usage count, and the control system generates a film replacement command accordingly. After the film replacement command is generated, it enters a pending execution state to trigger subsequent status judgments and film replacement control procedures.

[0085] S502. Obtain the working status of the heating body according to the membrane replacement command;

[0086] After the film change command is generated, the control system reads the current operating status information of the heating unit to determine whether the film change action is permitted at the current moment. The operating status can be obtained by reading equipment operating status register information, process status information, or action queue status information. The purpose of this step is to insert the film change action into an executable timing within the current processing flow, avoiding conflicts between the film change action and the current operation of the heating unit.

[0087] S503. When the working state is in the process of performing a work task and no task action is performed, the isolation membrane winding structure is controlled to execute the membrane replacement instruction according to the membrane replacement instruction.

[0088] After confirming that the heating element is still within the current work cycle but that no actions affecting the film replacement have been performed by the relevant mechanisms, the control system issues a film replacement execution control signal. These unexecuted tasks generally correspond to intermittent intervals, waiting intervals, or action switching intervals within the process cycle. Within this interval, the separator film winding structure initiates the film replacement preparation process, and the feeding assembly 21, receiving assembly 22, alignment assembly 23, and separation assembly 24 enter a coordinated control state, establishing the execution conditions for subsequent film lifting and film feeding actions.

[0089] S504. Control the separation component to cooperate with the lifting shaft to raise the isolation membrane, so that the isolation membrane separates from the product surface;

[0090] The control system sends a lifting control signal to the separation assembly 24. The lifting shaft 242 drives the fixing frame 244 to move upward, and the fixing frame 244 then drives the separation roller 241 to move towards the release film. After the separation roller 241 lifts the release film located on the product surface, the release film detaches from the product surface, switching from a covered state to a separated state. This step releases the release film from the product surface, allowing it to move along a predetermined path during subsequent film replacement processes without continuing to adhere to the product surface.

[0091] S505. Obtain the offset parameters of the isolation membrane through the sensor of the correction component 23;

[0092] After the separator membrane is lifted off the product surface, the sensor in the correction assembly 23 detects the current operating position of the separator membrane and outputs an offset parameter. The offset parameter indicates the degree of deviation between the current position of the separator membrane and the preset reference position. This step is set before the actual membrane movement during membrane replacement to confirm whether the current lateral position of the separator membrane meets the stable membrane replacement conditions, preventing the separator membrane from directly entering the synchronous membrane movement stage when the offset is large.

[0093] S506. When the offset parameter is less than the preset correction parameter, control the feeding component 21 and the receiving component 22 to work synchronously, so that the isolation membrane is kept in a taut state while the isolation membrane is replaced.

[0094] When the offset parameter is less than the preset threshold, it indicates that the current position of the separator membrane meets the conditions for membrane replacement. The control system simultaneously sends drive control signals to the feeding assembly 21 and the receiving assembly 22. The feeding assembly 21 releases the separator membrane according to the set rhythm, and the receiving assembly 22 synchronously pulls it back. The two maintain a corresponding relationship in terms of speed and displacement, so that the separator membrane is always in a taut state during the movement. As the feeding end releases new membrane and the receiving end winds up the used membrane segment, the separator membrane located in the processing area of ​​the heating body is replaced, thus realizing one membrane replacement operation.

[0095] The film changing action is first triggered by the number of processing cycles, then the current working status of the heating body is judged, and then the film is lifted by the separation component 24. The correction component 23 confirms that the current position meets the film changing conditions, and finally the feeding component 21 and the receiving component 22 work together to complete the film changing.

[0096] In this embodiment, a membrane replacement command is triggered when the number of processing cycles reaches the preset number of membrane replacement cycles. The membrane replacement is performed at an appropriate time based on the working state of the heating body. In addition, the membrane is lifted by the separation component, detected by the correction component, and the membrane replacement is controlled synchronously by the feeding component and the receiving component. This allows the membrane to be replaced in a relatively stable state, which helps to reduce the membrane deviation, loosening, and interference with the product surface during the membrane replacement process. This reduces the risk of contamination during product processing and improves processing stability.

[0097] Please see Figure 6 This application provides another embodiment of a method for controlling the winding of a heating device's insulating film, which includes:

[0098] S601. Read the time parameter of the timer. When the time parameter of the timer is greater than the preset parameter, generate a membrane replacement command.

[0099] The timer records the accumulated operating time of the current separator membrane since the last membrane replacement. The time parameter can be the continuous accumulated duration or the effective working time accumulated according to the processing cycle. The preset parameters are pre-set based on the allowable continuous use time of the separator membrane under the current heating conditions and are stored in the control system.

[0100] During execution, the control system polls the timer according to a set cycle, or reads the current value of the timer after each processing cycle. When the time parameter is greater than the preset parameter, the control system determines that the current isolation membrane has reached the membrane replacement trigger condition in the time dimension, and then generates a membrane replacement command.

[0101] S602. When the membrane replacement command is completed, reset the timer's time parameter.

[0102] The completion of the membrane replacement instruction means that the feeding component 21 and the receiving component 22 have completed a membrane feeding action of the corresponding set length, and the isolation membrane in the heating body processing area has been updated to the next usable membrane surface.

[0103] During execution, after receiving the membrane replacement completion signal, the control system sends a reset control signal to the timer, causing the timer to return to its initial timing state. The initial timing state is usually set to zero duration, but it can also be set to a pre-stored baseline value. After the timer completes the reset, it restarts recording the cumulative usage time of the new segment of the separator membrane.

[0104] S603. Obtain the number of processing steps; when the number of processing steps equals the number of film replacement steps, generate a film replacement command.

[0105] S604. Obtain the working status of the heating body according to the membrane replacement command;

[0106] S605. When the working state is performing a work task but not performing a task action, control the isolation membrane winding structure to execute the membrane replacement instruction according to the membrane replacement instruction.

[0107] S606. Control the separation component to cooperate with the lifting shaft to raise the isolation membrane, so that the isolation membrane separates from the product surface;

[0108] S607. Obtain the offset parameters of the isolation membrane through the sensor of the correction component;

[0109] Steps S603 to S607 in this embodiment are similar to steps S501 to S505 in the previous embodiment, and will not be described in detail here.

[0110] S608. When the offset parameter is greater than the preset correction parameter, a correction command is generated according to the offset parameter, so that the correction component corrects the position of the isolation membrane according to the correction command until the offset parameter is less than the correction parameter.

[0111] After the control system obtains the offset parameters, it compares the offset parameters with the preset correction parameters. When the offset parameters are greater than the preset correction parameters, it indicates that the current lateral position of the separator membrane exceeds the allowable range. At this time, the membrane replacement action is not executed directly, but the position correction process is entered first.

[0112] During execution, the control system determines the correction direction and amount based on the offset parameters and generates a correction command accordingly. The correction command includes at least the correction direction information and the correction execution amount information, and may also include execution speed, action holding time, or target position parameters if necessary. Subsequently, the control system sends the correction command to the correction component 23, whose actuator adjusts the isolation membrane's running path, causing the isolation membrane to move back to the reference position.

[0113] After the correction component 23 completes one position adjustment, the sensor detects the current position of the separator membrane again and outputs a new offset parameter. The control system continues to determine whether the updated offset parameter is still greater than the correction parameter; if the determination result is yes, it continues to generate the next round of correction instructions and executes the correction; if the determination result is no, it ends the correction process and allows the subsequent membrane replacement step to proceed.

[0114] In this embodiment, the number of processing cycles is used as the trigger for membrane replacement. Then, the membrane replacement process is inserted into a time period when no task action is being performed, based on the current working state of the heating body. This ensures that the membrane replacement action matches the processing rhythm and avoids direct membrane replacement during critical processes. Subsequently, the separation component 24, in conjunction with the lifting shaft 242, lifts the separator membrane off the product surface. Then, the deviation correction component 23 detects the offset parameters and, once the offset meets the requirements, controls the feeding component 21 and the receiving component 22 to synchronously feed the membrane. As a result, the membrane replacement process is stably connected, reducing membrane surface deviation, loosening, and interference with the product surface during membrane replacement.

[0115] S609. When the offset parameter is less than the preset correction parameter, control the feeding component and the receiving component to work synchronously, so that the isolation membrane is kept in a taut state while the isolation membrane is replaced.

[0116] Step S609 in this embodiment is similar to step S506 in the previous embodiment, and will not be described in detail here.

[0117] S610. Obtain the material parameters of the separator membrane, the material parameters including the total length of the separator membrane, the total length offset, the consumption amount per cycle and the tension allowance, the tension allowance being the redundant membrane length for maintaining the separator membrane in a tensioned state under high temperature thermal expansion deformation.

[0118] The total length of the release membrane is the factory-set length of a single roll of release membrane or the length entered into the equipment; the total length offset is the total length correction value generated during the rolling, cutting, splicing, or metering process of a single roll of release membrane; the consumption per cycle is the theoretical film length of the release membrane when each film change operation is performed; the tension allowance is the additional film length reserved for the release membrane when it is kept under tension. This additional length is used to compensate for the length changes caused by thermal elongation, path stretching, or mechanism coordination of the release membrane under high temperature environment.

[0119] In practice, the control system can read pre-entered material information after the release film is rolled, or it can call up the current roll film parameters through the human-machine interface. The consumption amount is usually preset based on the length of the heating body's coverage area, the film changing step distance, and the material take-up and unwinding coordination stroke; the tension allowance is preset based on the equipment tension control requirements and heating conditions. Before entering the length calculation process, the control system writes the above parameters as the basic calculation data for the current roll of release film into the control buffer area for subsequent consumption calculation.

[0120] S611. Obtain the number of membrane replacements, and calculate the total consumption of the separator membrane based on the material parameters. The formula for calculating the consumption is: Q = N × (L + ΔL) + ΔT.

[0121] Where Q is the consumption amount, N is the number of membrane replacements, L is the consumption per unit, ΔL is the tension allowance, and ΔT is the total length offset.

[0122] The control system first reads the current cumulative number of film replacements N, then retrieves the consumption per replacement L, tension allowance ΔL, and total length offset ΔT from the material parameters. Subsequently, the control system calculates the cumulative length of the current roll of release film used according to the formula.

[0123] Where N×(L+ΔL) represents the cumulative value of the theoretical film travel length and the additional tension length for each film change, and ΔT is used to correct the deviation of the entire roll of separator film in the initial length. After this step, the control system obtains the cumulative consumption Q of the current roll of separator film, which serves as the input data for determining the remaining length.

[0124] It should be noted that the total length offset ΔT is a correction amount used to characterize the deviation of the actual usable total length of the current roll of release film from the nominal total length. Its value can be determined based on roll loading inspection, cutting error, joint loss, metering error, or pre-entered material information. For ease of unified calculation, in this embodiment, the total length offset ΔT is equivalently incorporated into the consumption amount Q for calculation. Specifically, when the actual usable total length of the current roll of release film is less than the nominal total length, ΔT takes a positive value to reflect the corresponding increase in equivalent consumption due to the reduction in actual usable length; when the actual usable total length of the current roll of release film is greater than the nominal total length, ΔT takes a negative value to reflect the corresponding decrease in equivalent consumption due to the increase in actual usable length. Through the above settings, the initial length deviation of a single roll of release film can be uniformly converted into the cumulative consumption amount Q, thereby facilitating the subsequent calculation of the remaining usable length S based on the rated total length G and the consumption amount Q.

[0125] S612. Calculate the remaining usable length based on the consumption and the rated total length of the single roll of release film;

[0126] The rated total length is the nominal total length of the current roll of release film. It can be entered from the material information during roll loading or directly retrieved from the roll film specification parameters.

[0127] In practice, the control system subtracts the current consumption Q from the rated total length to obtain the remaining usable length of the current roll of separator film. The calculation relationship can be expressed as: S=G Q

[0128] Where S is the remaining usable length and G is the rated total length of a single roll of separator film.

[0129] S613. When the remaining available length is greater than the preset length, control the feeding component and the receiving component to perform a film changing action according to the consumption amount, where the preset length is a preset value greater than the consumption amount.

[0130] The preset length is the minimum remaining length threshold required to perform another membrane replacement operation, and this threshold is greater than the consumption amount per operation. With this setting, in addition to meeting the basic membrane travel length, the membrane replacement operation also retains the necessary matching length margin.

[0131] In practice, the control system compares the remaining usable length obtained in step S612 with the preset length. When the result indicates that the remaining usable length is greater than the preset length, the control system allows the current film replacement process to begin and sends a linkage control signal to the feeding assembly 21 and the receiving assembly 22. The feeding assembly 21 releases the release film at a set step distance, and the receiving assembly 22 synchronously winds up the release film at the corresponding step distance. The execution length of both is controlled according to the consumption amount per cycle.

[0132] S614. When the remaining available length is less than the preset length, a membrane failure warning command is generated.

[0133] The film shortage warning command is used to indicate that the current roll of separator film does not meet the requirements for subsequent film replacement. Based on this, the control system outputs warning information to the display terminal, alarm module or upper management system.

[0134] During execution, after the control system compares the remaining usable length with the preset length, if the result indicates that the remaining usable length is less than the preset length, it stops the normal film replacement process and generates a film shortage warning command. The film shortage warning command may include the current remaining usable length, the current number of film replacements, the current film roll status, and a replacement reminder. After the control system outputs this command, the equipment enters a waiting-for-replenishment state, allowing operators to replace the film roll with a new one, or the upper-level system to record the status information that the current film roll is about to run out.

[0135] It should be noted that the remaining available length of the current roll of separator film is updated based on the actual film length consumption corresponding to this film replacement, and the updated remaining available length is used as the basis for judging the margin before the next film replacement trigger. For the case of the separator film being used for the first time, the control system can first complete the first film replacement action based on the processing number trigger condition, the timing trigger condition, or the manually set condition, and then establish the margin reference value of the current roll of separator film based on the actual consumption after the first film replacement; in subsequent operations, when the film replacement trigger condition is met again, the control system can directly call the previously updated remaining available length for judgment. If the remaining available length is less than the preset length, a film shortage warning command is generated before the next film replacement is executed, thereby realizing early warning control for subsequent film replacement actions.

[0136] This embodiment adds a timer trigger to the processing count trigger, ensuring that the membrane replacement conditions simultaneously cover the number of uses and continuous running time, avoiding membrane replacement lag caused by judging based on a single threshold. Before membrane replacement, the offset parameter is detected. If the offset exceeds the limit, closed-loop correction is executed first, and then synchronous membrane feeding and replacement are initiated, ensuring that the membrane replacement start position is controlled. Furthermore, the remaining usable length is calculated by combining material parameters, membrane replacement count, and rated total length, and a membrane shortage warning is output when the length is insufficient, thus forming a continuous control link for membrane replacement execution, membrane roll remaining amount judgment, and membrane replenishment prompts.

[0137] For a detailed description of the correction instruction generation process based on the offset parameters described in step S608, please refer to [link to relevant documentation]. Figure 7 This application provides an embodiment of the process for generating correction instructions in a method for controlling the winding of a heating device's insulating film, which includes:

[0138] S701. Analyze the offset parameters to obtain the lateral offset amount and lateral offset speed of the isolation membrane;

[0139] The offset parameter is the position detection data output by the correction component sensor, used to indicate the deviation of the separator edge or baseline from the target position. The lateral offset is the difference in lateral distance between the current position of the separator and the preset reference position; the lateral offset speed is the change in lateral offset per unit time, used to reflect how fast the separator deviates from its target position.

[0140] In practice, the sensors in the correction assembly continuously collect data on the edge position of the isolation membrane. The control system reads multiple consecutive sampling points according to the sampling period and compares the current position data with the preset reference position to obtain the lateral offset ΔW at the current moment. Subsequently, the control system calculates the lateral offset velocity vw based on the change in lateral offset between two adjacent sampling moments and the corresponding sampling time interval. The calculation process can be performed in a differential manner, that is, by dividing the offset difference between the current sampling point and the previous sampling point by the sampling time interval to obtain the current offset change rate.

[0141] S702, Obtain the real-time operating temperature of the heating chamber and the real-time operating tension of the isolation membrane at the current correction component;

[0142] The control system acquires the real-time operating temperature of the heating chamber and the real-time operating tension of the isolation membrane at the current correction component.

[0143] Among them, the real-time operating temperature is the actual operating temperature inside the heating chamber, which reflects the thermal environment of the isolation membrane; the real-time operating tension is the tension force value of the isolation membrane when it passes the current position of the correction component, which reflects the current membrane movement status.

[0144] In practice, the temperature detection unit inside the heating chamber outputs the current temperature signal, which the control system reads to obtain the real-time operating temperature Tr. Simultaneously, the tension detection unit collects the force exerted on the isolation membrane at the current position of the correction component, and the control system obtains the real-time operating tension Fr based on the tension sensor signal.

[0145] In actual control, both the real-time operating temperature Tr and the real-time operating tension Fr are used as dynamic quantities in subsequent calculations. Therefore, the control system reads the latest detection value at the current moment before generating correction instructions, instead of using a preset fixed value.

[0146] S703. Calculate the thermal deformation compensation coefficient at the current temperature based on the real-time operating temperature and the preset membrane expansion characteristic model.

[0147] The membrane material expansion characteristic model is a pre-established model of the relationship between temperature and the thermal deformation response of the membrane material, used to describe the dimensional change trend of the separator under different temperature conditions. The thermally induced deformation compensation coefficient is used to compensate for the changes in length, width, or stress response of the separator after heating in the correction calculation.

[0148] In practice, the control system acquires the real-time operating temperature Tr and, in conjunction with the reference ambient temperature T0 and the membrane material expansion characteristic model, calculates the thermal deformation compensation coefficient β under the current temperature conditions.

[0149] Specifically, α is the linear expansion coefficient of the separator material calibrated at the reference ambient temperature T0, with units of ℃^-1, used to characterize the thermal deformation characteristics of the separator as temperature changes; β is the thermally induced deformation compensation coefficient under the current temperature conditions, and its calculation relationship is: β=[1+α(Tr-T0)]. Through the above method, the thermally induced deformation compensation coefficient β can characterize the compensation effect of the current thermal environment relative to the reference environment on the correction calculation, thereby ensuring that subsequent correction control remains consistent with the current heating state.

[0150] S704. Input the lateral offset, the lateral offset speed, the real-time running tension and the thermal deformation compensation coefficient into the preset correction dynamic compensation model, calculate the target deflection angle of the correction component, and generate the correction command containing the target deflection angle.

[0151] The calculation formula for the dynamic compensation model for course correction is as follows:

[0152] θ=(kp ΔW+kd vw) β (F0 / Fr), β=[1+α(Tr-T0)];

[0153] Where θ is the target deflection angle, ΔW is the lateral offset, vw is the lateral offset velocity, kp is the preset proportional gain coefficient, kd is the differential gain coefficient, β is the thermal deformation compensation coefficient, α is the linear expansion coefficient of the isolation membrane, Tr is the real-time operating temperature, T0 is the reference ambient temperature, Fr is the real-time operating tension, and F0 is the reference tension.

[0154] In the specific calculation, the control system first calculates the basic correction amount based on the lateral offset ΔW and the lateral offset velocity vw. Among them, kp×ΔW corresponds to the angle adjustment caused by the offset position, and kd×vw corresponds to the angle adjustment caused by the offset change trend. Then, the thermal deformation compensation coefficient β is introduced into the basic correction amount to compensate for the influence of the thermal deformation of the isolation membrane on the correction control under the current thermal environment. After that, the term (F0 / Fr) is used to correct the tension of the calculation results so that the target deflection angle corresponds to the current membrane tension state.

[0155] After the control system calculates the target deflection angle θ, it writes the target deflection angle θ into a correction command and sends the correction command to the correction component. Upon receiving the correction command, the correction component adjusts the position or angle of the corresponding guide component according to the target deflection angle, thereby changing the direction of the isolation membrane's movement and completing the correction at the current position.

[0156] This embodiment decomposes the offset parameter into lateral offset amount and lateral offset velocity, enabling the correction control to simultaneously reflect the current position deviation and the trend of deviation change. Furthermore, it introduces real-time operating temperature, real-time operating tension, and a membrane material expansion characteristic model to perform temperature compensation and tension correction on the target deflection angle. This ensures that the correction command is no longer generated solely based on a single position deviation, but rather corresponds to the current thermal and stress state of the separator membrane. Consequently, the target deflection angle output by the correction component has a higher degree of matching with the actual membrane movement conditions, improving the correction stability during high-temperature membrane movement.

[0157] This application also relates to a computer-readable storage medium on which a program is stored, characterized in that, when the program is run on a computer, it causes the computer to perform any of the methods described above.

[0158] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0159] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0160] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0161] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0162] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A method for controlling the winding of a heat-generating membrane in a heating device, characterized in that, The heating device includes: Heating body with insulating film winding structure; The heating body includes a heating cavity and a product placement rack. The heating cavity includes an upper cavity and a lower cavity, which are separately disposed. The product placement rack is disposed inside the heating cavity. The isolation membrane winding structure includes a feeding assembly, a receiving assembly, a correction assembly, and a separation assembly; The feeding assembly and the receiving assembly are arranged opposite to each other on both sides of the heating body and connected by an isolation membrane; The separation assembly includes a separation roller, a lifting shaft, and a support frame. The support frame is located on opposite sides of the heating body that are different from the receiving assembly and the feeding assembly. The support frame is used to support the fixing frame of the separation roller. The fixing frame is connected to the support frame through the lifting shaft. The correction component is disposed between the heating body and the receiving component; The method includes: The number of processing steps is obtained, and a membrane replacement instruction is generated when the number of processing steps equals the number of membrane replacement steps. The working status of the heating element is obtained according to the membrane replacement command; When the working state is in the process of performing a work task and no task action is performed, the isolation membrane winding structure is controlled to execute the membrane replacement instruction according to the membrane replacement instruction. The separation component is controlled to work with the lifting shaft to raise the isolation membrane, thereby separating the isolation membrane from the product surface; The offset parameters of the isolation membrane are obtained through the sensors of the correction component; When the offset parameter is greater than the preset correction parameter, a correction command is generated according to the offset parameter, so that the correction component corrects the position of the isolation membrane according to the correction command until the offset parameter is less than the correction parameter; The offset parameters are analyzed to obtain the lateral offset amount and lateral offset velocity of the isolation membrane; The real-time operating temperature of the heating chamber and the real-time operating tension of the isolation membrane at the current correction component are obtained. Based on the real-time operating temperature and the preset membrane expansion characteristic model, calculate the thermal deformation compensation coefficient at the current temperature; The lateral offset, the lateral offset speed, the real-time running tension, and the thermal deformation compensation coefficient are input into a preset correction dynamic compensation model to calculate the target deflection angle of the correction component and generate the correction command containing the target deflection angle. The calculation formula for the dynamic compensation model for course correction is as follows: θ=(kp ΔW+kd (vw) b (F0 / Fr), β=[1+α(Tr-T0)]; Where θ is the target deflection angle, ΔW is the lateral offset, vw is the lateral offset velocity, kp is the preset proportional gain coefficient, kd is the differential gain coefficient, β is the thermal deformation compensation coefficient, α is the linear expansion coefficient of the isolation membrane, Tr is the real-time operating temperature, T0 is the reference ambient temperature, Fr is the real-time operating tension, and F0 is the reference tension. When the offset parameter is less than the preset correction parameter, the feeding component and the receiving component are controlled to work synchronously, so that the isolation membrane is kept in a taut state while the isolation membrane is replaced.

2. The control method according to claim 1, characterized in that, When the offset parameter is less than a preset correction parameter, after controlling the feeding component and the receiving component to work synchronously, the method further includes: Obtain the material parameters of the separator membrane, including the total length of the separator membrane, the total length offset, the consumption per cycle, and the tension allowance. The tension allowance is the redundant membrane length that maintains the separator membrane in a taut state to prevent deformation under high temperature thermal expansion. The number of membrane replacements is obtained, and the total consumption of the separator membrane is calculated based on the material parameters. The formula for calculating the consumption is: Q = N × (L + ΔL) + ΔT. Where Q is the consumption amount, N is the number of membrane replacements, L is the consumption per unit, ΔL is the tension allowance, and ΔT is the total length offset.

3. The control method according to claim 2, characterized in that, After obtaining the number of membrane replacements and calculating the total consumption of the separator membrane based on the material parameters, the method further includes: The remaining usable length is calculated based on the consumption and the rated total length of a single roll of release film; When the remaining available length is greater than the preset length, the feeding component and the receiving component are controlled to perform a film changing action according to the consumption amount per cycle, and the preset length is a preset value greater than the consumption amount per cycle. When the remaining available length is less than the preset length, a membrane failure warning command is generated.

4. The control method according to claim 1, characterized in that, Before obtaining the number of processing steps, the method further includes: Read the timer's time parameter; when the timer's time parameter is greater than a preset parameter, generate a membrane replacement command. Once the membrane replacement command is executed, the timer's time parameter is reset.

5. The control method according to any one of claims 1 to 4, characterized in that, The heating chamber is provided with a pair of isolation film limiting clips, which are positioned opposite each other on the outer edge of the product placement rack. The distance between the isolation film limiting clips is less than the width of the isolation film.

6. The control method according to any one of claims 1 to 4, characterized in that, The isolation membrane winding structure is provided with a feeding side guide wheel group and a receiving side guide wheel group. The feeding side guide wheel group is staggered vertically between the feeding component and the heating body, and the receiving side guide wheel group is staggered vertically between the correction component and the receiving component. The isolation membrane is sequentially wound around each guide wheel to form a tensioned membrane path.

7. The control method according to any one of claims 1 to 4, characterized in that, A membrane cleaning mechanism is also provided between the feeding component and the heating body. The membrane cleaning mechanism is equipped with an upper and lower opposing dust cleaning roller group. The roller surfaces of the dust cleaning roller group roll in contact with the upper and lower surfaces of the isolation membrane, respectively.

8. The control method according to any one of claims 1 to 4, characterized in that, The surface of the separating rubber roller is uniformly provided with several pressure-reducing grooves along the axial direction.

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