Temperature control method and system for polytetrafluoroethylene film degreasing equipment

Abstract

The present application relates to a temperature control method and system for polytetrafluoroethylene film degreasing equipment, which is applied in the field of temperature control of degreasing equipment. The method comprises: receiving an infrared sensing image transmitted by an infrared imaging component; dividing the infrared sensing image into a preheating area, a degreasing area, and a cooling area according to the position distribution of the preheating roller, the degreasing roller, and the cooling roller; calculating a first average temperature of the preheating area, a second average temperature of the degreasing area, and a third average temperature of the cooling area; and adjusting the temperatures of the preheating roller, the degreasing roller, and the cooling roller according to preset adjustment rules until the first average temperature of the preheating area reaches a preset first temperature range, the second average temperature of the degreasing area reaches a preset second temperature range, and the third average temperature of the cooling area reaches a preset third temperature range. The technical effect of the present application is to improve the product quality of polytetrafluoroethylene film.

Description

Technical Field

[0001] The present application relates to the technical field of temperature control of degreasing equipment, and in particular to a temperature control method and system for polytetrafluoroethylene film degreasing equipment. Background Art

[0002] Polytetrafluoroethylene film is made of polytetrafluoroethylene dispersed powdered resin as raw material, mixed with liquid lubricant, screened, pre-formed, extruded, calendered, longitudinally stretched, transversely stretched and heat-set. During these processes, the polytetrafluoroethylene film must maintain a certain oil content, otherwise it will affect the stability of the film performance.

[0003] The degreasing equipment is used to remove oily additives such as kerosene from the inside of the polytetrafluoroethylene film. The degreasing equipment is provided with an inlet and outlet for the polytetrafluoroethylene film to enter and exit. Several heating rollers are arranged in sequence inside the degreasing equipment, and the polytetrafluoroethylene film is passed around the several heating rollers in sequence. As the polytetrafluoroethylene film slowly passes through the degreasing equipment, the heating rollers will heat the polytetrafluoroethylene film so that the oil molecules inside it will escape due to the heat, thereby achieving the effect of removing the oily additives inside the polytetrafluoroethylene film, that is, the degreasing effect.

[0004] In the process of realizing the present application, the inventors discovered that there are at least the following problems in the process of degreasing polytetrafluoroethylene film by the degreasing equipment: in order to heat the polytetrafluoroethylene film, the temperature of the heating roller inside the degreasing equipment is usually high, and when the polytetrafluoroethylene film suddenly enters and exits the box, the temperature of the polytetrafluoroethylene film that is in direct contact with or separated from the high-temperature heating roller will rise or fall sharply, making the polytetrafluoroethylene film prone to bubbling or wrinkling, etc., which affects the product quality. Summary of the Invention

[0005] In order to help improve the product quality of polytetrafluoroethylene films, the present application provides a temperature control method and system for polytetrafluoroethylene film degreasing equipment.

[0006] In a first aspect, the present application provides a temperature control method for polytetrafluoroethylene film degreasing equipment, which adopts the following technical solution: the method is applied to the degreasing equipment, the degreasing equipment including a plurality of heating rollers arranged in a box, the plurality of heating rollers being pre-divided into preheating rollers, degreasing rollers, and cooling rollers, the temperatures of the plurality of preheating rollers being pre-set to gradually increase along the conveying direction of the polytetrafluoroethylene film, the temperatures of the plurality of degreasing rollers being pre-set to be the same, and the temperatures of the plurality of cooling rollers being pre-set to gradually decrease along the conveying direction of the polytetrafluoroethylene film, and the box being provided with an infrared imaging component for temperature monitoring of the heating roller area; the method comprising:

[0007] Receive infrared sensing images sent by the infrared imaging component;

[0008] According to the position distribution of the preheating roller, degreasing roller and cooling roller, the infrared sensing image is divided into the preheating area, degreasing area and cooling area respectively;

[0009] Calculating a first average temperature of the preheating area, a second average temperature of the degreasing area, and a third average temperature of the cooling area respectively;

[0010] Adjusting the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range;

[0011] Adjusting the temperature of the degreasing roller according to a preset adjustment rule until the second average temperature of the degreasing area reaches a preset second temperature range;

[0012] The temperature of the cooling roller is adjusted according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range.

[0013] Through the above technical solution, during the operation of the degreasing equipment, the infrared sensing image inside the equipment will be obtained in real time through the infrared sensing device, and then the first average temperature of the preheating area, the second average temperature of the degreasing area and the third average temperature of the cooling area will be calculated respectively, and the first average temperature will be stabilized in the first temperature range, the second average temperature will be stabilized in the second temperature range, and the third average temperature will be stabilized in the third temperature range according to the preset adjustment rules, so that the polytetrafluoroethylene film entering the degreasing equipment can be gradually heated by the preheating roller when passing through the preheating area, and then stably heated by the heating roller for degreasing when passing through the degreasing area. After the degreasing is completed, it can be gradually cooled by the cooling roller when passing through the cooling area; the temperature of the polytetrafluoroethylene film changes evenly during the degreasing process through the degreasing equipment, reducing the possibility of the temperature of the polytetrafluoroethylene film rising or falling sharply during the degreasing process, thereby improving the product quality of the polytetrafluoroethylene film.

[0014] In a specific embodiment, adjusting the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range includes:

[0015] When the first average temperature is lower than the first temperature range, the set temperature value of the preheating roller is increased by a preset value in a cycle in a direction opposite to the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range;

[0016] When the first average temperature is greater than the first temperature range, the set temperature value of the preheating roller is reduced by a preset value in successive cycles in the same direction as the polytetrafluoroethylene film conveying direction until the first average temperature of the preheating area reaches the preset first temperature range.

[0017] Through the above technical solution, in the process of adjusting the first average temperature of the preheating area, several preheating rollers always maintain a state of gradually increasing temperature in the same direction as the conveying direction of the polytetrafluoroethylene film, so that the polytetrafluoroethylene film can be gradually heated up and preheated in the preheating area, reducing the possibility of bubbling or wrinkling of the polytetrafluoroethylene film due to a sudden temperature rise during the degreasing process, thereby further improving the product quality of the polytetrafluoroethylene film.

[0018] In a specific embodiment, the step of adjusting the temperature of the degreasing roller according to a preset adjustment rule until the second average temperature of the degreasing area reaches a preset second temperature range includes:

[0019] When the second average temperature is lower than the preset second temperature range, the set temperature values ​​of the plurality of degreasing rollers are increased by the preset value simultaneously and successively until the second average temperature of the degreasing area reaches the preset second temperature range;

[0020] When the second average temperature is greater than the preset second temperature range, the set temperature values ​​of the plurality of degreasing rollers are reduced by the preset value simultaneously and successively until the second average temperature of the degreasing area reaches the preset second temperature range.

[0021] Through the above technical solution, in the process of adjusting the second average temperature of the degreasing area, the temperatures of several degreasing rollers are always kept consistent, so that the polytetrafluoroethylene film can be stably degreased when passing through the degreasing area, reducing the possibility that the temperature inconsistency of several degreasing rollers will cause uneven heating of the polytetrafluoroethylene film, thereby affecting the degreasing effect of the polytetrafluoroethylene film, thereby further improving the degreasing effect of the polytetrafluoroethylene film.

[0022] In a specific embodiment, adjusting the temperature of the cooling roller according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range includes:

[0023] When the third average temperature is lower than the preset third temperature range, the set temperature value of the cooling roller is increased by the preset value in a cycle in the same direction as the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling area reaches the preset third temperature range;

[0024] When the third average temperature value is greater than the preset third temperature range, the set temperature value of the cooling roller is reduced by the preset value in a successive cycle in the direction opposite to the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling area reaches the preset third temperature range.

[0025] Through the above technical solution, in the process of adjusting the third average temperature of the cooling area, several cooling rollers always maintain a state of gradually decreasing temperature in the same direction as the conveying direction of the polytetrafluoroethylene film, so that the polytetrafluoroethylene film can be gradually cooled in the cooling area, reducing the possibility of bubbling or wrinkling of the polytetrafluoroethylene film due to a sudden drop in temperature during the degreasing process, thereby further improving the product quality of the polytetrafluoroethylene film.

[0026] In a specific embodiment, the degreasing equipment further includes a temperature monitoring component disposed in the heating roller; the method further includes:

[0027] Real-time acquisition of roller temperature information fed back by the temperature monitoring component; the roller temperature information includes roller temperature and roller number;

[0028] When there is an abnormal roller whose roller temperature is lower than a preset normal value, the roller type corresponding to the roller number is searched in a preset regional distribution database according to the roller number; the roller types include preheating rollers, degreasing rollers and cooling rollers;

[0029] The heating roller is adjusted according to the roller type of the abnormal roller found out and the preset adjustment rules to maintain the normal operation of the degreasing equipment.

[0030] Through the above technical solution, during the normal operation of the degreasing equipment, the roller temperature of each heating roller is detected in real time. When the temperature of a roller is lower than the preset normal value, it is determined that the roller has a fault and the roller is set as an abnormal roller. Then, the roller type corresponding to the abnormal roller is queried and the heating roller is adjusted according to the roller type, so that the degreasing equipment can continue to work normally when a certain heating roller fails, thereby reducing the possibility of the degreasing efficiency of the polytetrafluoroethylene film being affected by the failure of the degreasing equipment.

[0031] In a specific implementation scheme, adjusting the plurality of heating rollers according to the roller type of the abnormal roller found out and the preset adjustment rules includes:

[0032] If the roller type of the abnormal roller is a preheating roller, determining the position of the abnormal roller;

[0033] If the abnormal roller is the preheating roller farthest from the degreasing area, the degreasing roller closest to the preheating area is temporarily adjusted to the preheating roller;

[0034] After increasing the lowest temperature value in the second temperature range by a preset value, the second temperature range is reset;

[0035] again calculating the first average temperature of the preheating area and the second average temperature of the degreasing area;

[0036] Adjusting the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range;

[0037] The temperature of the degreasing roller is adjusted according to a preset adjustment rule until the second average temperature of the degreasing area reaches the reset second temperature range.

[0038] Through the above technical solution, if the abnormal roller is the preheating roller farthest from the degreasing area, the degreasing roller closest to the preheating area will be temporarily set as the preheating roller, so that the preheating area can continue to be preheated normally; and in order that the polytetrafluoroethylene film can be degreased normally, the lowest temperature value of the second temperature range of the degreasing area is increased to make up for the situation where a degreasing roller is missing in the degreasing area; so that the polytetrafluoroethylene film can be degreased more efficiently in the degreasing area, so that when the preheating roller farthest from the degreasing area fails, the degreasing equipment can still continue to degrease the polytetrafluoroethylene film normally, thereby enhancing the stability and degreasing efficiency of the degreasing equipment.

[0039] In a specific implementation scheme, adjusting the plurality of heating rollers according to the roller type of the abnormal roller found out and the preset adjustment rules includes:

[0040] If the abnormal roller is a degreasing roller, the second temperature range is reset after the lowest temperature value in the second temperature range is increased by a preset value;

[0041] The temperature of the degreasing roller is adjusted according to a preset adjustment rule until the second average temperature of the degreasing area reaches the reset second temperature range.

[0042] Through the above technical solution, if the abnormal roller is a heating roller, the lowest temperature value of the second temperature range of the degreasing area will be increased to compensate for the situation where a degreasing roller is missing in the degreasing area; so that the polytetrafluoroethylene film can be degreased more efficiently in the degreasing area, so that when a heating roller malfunctions, the degreasing equipment can still continue to degrease the polytetrafluoroethylene film normally, thereby enhancing the stability and degreasing efficiency of the degreasing equipment.

[0043] In a specific implementation scheme, adjusting the plurality of heating rollers according to the roller type of the abnormal roller found out and the preset adjustment rules includes:

[0044] If the roller type of the abnormal roller is a cooling roller, determining the position of the abnormal roller;

[0045] If the abnormal roller is the cooling roller farthest from the degreasing area, the highest temperature value in the third temperature range is reduced by a preset value, and the third temperature range is reset;

[0046] The temperature of the cooling roller is adjusted according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range.

[0047] Through the above technical solution, if the abnormal roller is the cooling roller farthest from the degreasing area, the maximum temperature value in the third temperature range is reduced by a preset value, and the third temperature range is reset. On the one hand, it is ensured that several cooling rollers in the cooling area are cooled in sequence along the conveying direction of the polytetrafluoroethylene film. On the other hand, the maximum temperature value of the third temperature range in the cooling area is reduced to make up for the absence of the cooling roller, so that the polytetrafluoroethylene film can be cooled quickly and gradually. In this way, when a cooling roller fails, the degreasing equipment can still continue to degrease the polytetrafluoroethylene film normally, thereby enhancing the stability and degreasing efficiency of the degreasing equipment.

[0048] In a second aspect, the present application provides a temperature control system for polytetrafluoroethylene film degreasing equipment, which adopts the following technical solution: the system is applied to the degreasing equipment, the degreasing equipment including a plurality of heating rollers arranged in a box, the plurality of heating rollers being pre-divided into preheating rollers, degreasing rollers, and cooling rollers, the temperatures of the plurality of preheating rollers being pre-set to gradually increase along the conveying direction of the polytetrafluoroethylene film, the temperatures of the plurality of degreasing rollers being pre-set to be the same, and the temperatures of the plurality of cooling rollers being pre-set to gradually decrease along the conveying direction of the polytetrafluoroethylene film, and the box being provided with an infrared imaging component for temperature monitoring of the heating roller area; the system comprising:

[0049] Infrared image receiving module, used for receiving infrared sensing images sent by infrared imaging components;

[0050] A working area division module is used to divide the infrared sensing image into a preheating area, a degreasing area, and a cooling area according to the position distribution of the preheating roller, the degreasing roller, and the cooling roller;

[0051] an average temperature calculation module, for respectively calculating a first average temperature of the preheating area, a second average temperature of the degreasing area, and a third average temperature of the cooling area;

[0052] A preheating temperature regulating module, configured to regulate the temperature of the preheating roller according to a preset regulating rule until a first average temperature of the preheating area reaches a preset first temperature range;

[0053] A heating temperature regulating module, configured to regulate the temperature of the degreasing roller according to a preset regulating rule until the second average temperature of the degreasing area reaches a preset second temperature range;

[0054] The cooling temperature regulating module is used to regulate the temperature of the cooling roller according to a preset regulating rule until the third average temperature of the cooling area reaches a preset third temperature range.

[0055] Through the above technical solution, during the operation of the degreasing equipment, the infrared sensing image inside the equipment will be obtained in real time through the infrared sensing device, and then the first average temperature of the preheating area, the second average temperature of the degreasing area and the third average temperature of the cooling area will be calculated respectively, and the first average temperature will be stabilized in the first temperature range, the second average temperature will be stabilized in the second temperature range, and the third average temperature will be stabilized in the third temperature range according to the preset adjustment rules, so that the polytetrafluoroethylene film entering the degreasing equipment can be gradually heated by the preheating roller when passing through the preheating area, and then stably heated by the heating roller for degreasing when passing through the degreasing area. After the degreasing is completed, it can be gradually cooled by the cooling roller when passing through the cooling area; the temperature of the polytetrafluoroethylene film changes evenly during the degreasing process through the degreasing equipment, reducing the possibility of the temperature of the polytetrafluoroethylene film rising or falling sharply during the degreasing process, thereby improving the product quality of the polytetrafluoroethylene film.

[0056] In a third aspect, the present application provides a degreasing device, which adopts the following technical solution: it includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and executed by any of the above-mentioned temperature control methods for polytetrafluoroethylene film degreasing equipment.

[0057] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: storing a computer program that can be loaded by a processor and execute any of the above-mentioned temperature control methods for polytetrafluoroethylene film degreasing equipment.

[0058] In summary, this application includes at least one of the following beneficial technical effects:

[0059] 1. During the operation of the degreasing equipment, an infrared sensing image inside the equipment is obtained in real time through the infrared sensing device, and then the first average temperature of the preheating area, the second average temperature of the degreasing area, and the third average temperature of the cooling area are calculated respectively. According to the preset adjustment rules, the first average temperature is stabilized within the first temperature range, the second average temperature is stabilized within the second temperature range, and the third average temperature is stabilized within the third temperature range. As a result, the polytetrafluoroethylene film entering the degreasing equipment can be gradually heated by the preheating roller when passing through the preheating area, and then stably heated by the heating roller for degreasing when passing through the degreasing area. After degreasing, it can be gradually cooled by the cooling roller when passing through the cooling area. The temperature of the polytetrafluoroethylene film changes evenly during the degreasing process of the degreasing equipment, which reduces the possibility of a sudden increase or decrease in the temperature of the polytetrafluoroethylene film during the degreasing process, thereby improving the product quality of the polytetrafluoroethylene film.

[0060] 2. During the normal operation of the degreasing equipment, the roller temperature of each heating roller is detected in real time. When the temperature of a roller is lower than the preset normal value, the roller is determined to be faulty and the roller is set as an abnormal roller. Then, the roller type corresponding to the abnormal roller is queried and the heating roller is adjusted according to the roller type, so that the degreasing equipment can continue to work normally when a certain heating roller fails, thereby reducing the possibility of the degreasing equipment failing and shutting down to affect the degreasing efficiency of the polytetrafluoroethylene film. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a schematic diagram of the internal structure of the degreasing equipment in the embodiment of the present application.

[0062] Figure 2 This is a flow chart of the temperature control method of the polytetrafluoroethylene film degreasing equipment in the embodiment of the present application.

[0063] Figure 3 It is a schematic diagram used to reflect the preheating area adjustment logic in an embodiment of the present application.

[0064] Figure 4 This is a structural block diagram of the temperature control system of the polytetrafluoroethylene film degreasing equipment in the embodiment of the present application.

[0065] Figure 5 This is a structural block diagram of a temperature control system for a polytetrafluoroethylene film degreasing device in another embodiment of the present application.

[0066] Figure numerals: 401, infrared image receiving module; 402, working area division module; 403, average temperature calculation module; 404, preheating temperature adjustment module; 405, heating temperature adjustment module; 406, cooling temperature adjustment module; 407, abnormal roller processing module. DETAILED DESCRIPTION

[0067] The following is combined with Figure 1-5 This application is described in further detail.

[0068] The present application discloses a method for controlling the temperature of a polytetrafluoroethylene film degreasing device. Figure 1 As shown, the method is applied to a degreasing device, which includes a plurality of heating rollers arranged in a box body, and a temperature control center for adjusting the temperature of the plurality of heating rollers; the plurality of heating rollers are pre-divided into preheating rollers, degreasing rollers and cooling rollers in the temperature control center in sequence along the conveying direction of the polytetrafluoroethylene film; wherein the temperature of the plurality of preheating rollers is pre-set to gradually increase along the conveying direction of the polytetrafluoroethylene film, the temperature of the plurality of degreasing rollers is pre-set to the same value, and the temperature of the plurality of cooling rollers is pre-set to gradually decrease along the conveying direction of the polytetrafluoroethylene film; an infrared imaging component for temperature monitoring of the heating roller area is provided in the box body, and the infrared imaging component can be an infrared thermal imager; the degreasing device also includes a temperature monitoring component provided in the heating roller, and the temperature monitoring component can be a temperature sensor, that is, each heating roller is provided with a temperature sensor for detecting the temperature of the heating roller; the infrared imaging component and the temperature monitoring component are both controlled by the temperature control center.

[0069] like Figure 2 As shown, the method includes the following steps:

[0070] S10, receiving an infrared sensing image sent by an infrared imaging component.

[0071] Specifically, during the process of degreasing the polytetrafluoroethylene film by the degreasing equipment, the temperature control center will receive the infrared sensing image of the heating roller area sent by the infrared imaging component in real time.

[0072] S20 , dividing the infrared sensing image into a preheating area, a degreasing area, and a cooling area according to the position distribution of the preheating roller, the degreasing roller, and the cooling roller.

[0073] Specifically, when the temperature control center receives the infrared sensing image, it will divide the infrared sensing image into areas according to the position distribution of the preheating roller, degreasing roller and cooling roller. The area corresponding to the preheating roller is divided into the preheating area, the area corresponding to the degreasing roller is divided into the degreasing area, and the area corresponding to the cooling roller is divided into the cooling area; the polytetrafluoroethylene film is mainly preheated in the preheating area, heated and degreased in the degreasing area, and cooled in the cooling area.

[0074] S30 , respectively calculating a first average temperature of the preheating region, a second average temperature of the degreasing region, and a third average temperature of the cooling region.

[0075] Specifically, after dividing the preheating area, degreasing area and cooling area, the temperature control center will calculate the first average temperature of the preheating area, the second average temperature of the degreasing area and the third average temperature of the cooling area based on the infrared sensing image.

[0076] S40, adjusting the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range.

[0077] Specifically, during the normal degreasing process of the degreasing equipment on the polytetrafluoroethylene film, the temperature control center will automatically adjust the temperature of the preheating roller so that the first average temperature of the preheating area can always be maintained within the first temperature range, so that the polytetrafluoroethylene film can be stably preheated when passing through the preheating area.

[0078] S50: Adjust the temperature of the degreasing roller according to a preset adjustment rule until the second average temperature of the degreasing area reaches a preset second temperature range.

[0079] Specifically, during the normal degreasing process of the degreasing equipment on the polytetrafluoroethylene film, the temperature control center will automatically adjust the temperature of the degreasing roller so that the second average temperature of the degreasing area can always be maintained within the second temperature range, so that the polytetrafluoroethylene film can be stably degreased when passing through the degreasing area.

[0080] S60: Adjust the temperature of the cooling roller according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range.

[0081] Specifically, during the normal degreasing process of the PTFE film by the degreasing equipment, the temperature control center automatically adjusts the temperature of the cooling roller to ensure that the third average temperature of the cooling zone is always maintained within the third temperature range, so that the PTFE film can be stably cooled while passing through the cooling zone. During the degreasing process, the PTFE film passes through the preheating zone, the degreasing zone, and the cooling zone for preheating, degreasing, and cooling. In other words, the temperature of the PTFE film is always gradually rising or falling during the degreasing process, reducing the possibility of blistering or wrinkling of the PTFE film due to a sharp rise or fall in temperature during the degreasing process, thereby improving the product quality of the PTFE film.

[0082] It should be noted that the pre-set first temperature range can be the same as the third temperature range, and the second temperature range needs to be larger than the first temperature range and the third temperature range; for example, the staff can pre-set the first temperature range and the third temperature range to 60℃-90℃, and set the second temperature range to 120℃-130℃, so that the polytetrafluoroethylene film can be stably preheated, degreased and cooled when passing through the degreasing equipment.

[0083] In one embodiment, combined Figure 3 In order to ensure that the preheating roller in the preheating area can always be stably maintained in a preheating state that gradually increases along the conveying direction of the polytetrafluoroethylene film; the step of adjusting the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range can be specifically performed as follows:

[0084] When the first average temperature corresponding to the preheating area is lower than the first temperature range, the set temperature value of the preheating roller is increased by a preset value in successive cycles in a direction opposite to the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range; when the first average temperature corresponding to the preheating area is higher than the first temperature range, the set temperature value of the preheating roller is reduced by a preset value in successive cycles in a direction the same as the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range.

[0085] Taking the adjustment logic when the first average temperature corresponding to the preheating area is lower than the first temperature range as an example, it is assumed that the initial set temperatures of the three preheating rollers a, b and c arranged along the conveying direction of the polytetrafluoroethylene film are: roller a 60°C, roller b 75°C, roller c 90°C; the preset value for each adjustment is x°C; then, when the first average temperature corresponding to the preheating area is lower than the first temperature range, the control center will first adjust the temperature of roller c to (90+x)°C, and then check again after a preset time whether the first average temperature reaches the preset first temperature range; if it still does not reach it, the temperature of roller b will be adjusted to (75+x)°C. If the first average temperature still does not reach the first temperature range after adjusting the temperature of roller b, the temperature of roller a will continue to be adjusted to (60 +x)℃; if the first average temperature of the three preheating rollers a, b, and c still does not reach the first temperature range after the temperatures of the three preheating rollers a, b, and c are adjusted once, the temperature of the c roller will continue to be adjusted to (90+2x)℃; that is, the set temperature value of the preheating roller is increased by the preset value in successive cycles; in the process of the temperature control center adjusting the temperature of the preheating roller, several preheating rollers can always maintain a state of gradually increasing temperature along the conveying direction of the polytetrafluoroethylene film, so that the polytetrafluoroethylene film can always be stably preheated in the preheating area with gradually increasing temperature, thereby improving the preheating effect of the degreasing equipment on the polytetrafluoroethylene film, further reducing the possibility of blistering or wrinkling of the polytetrafluoroethylene film due to sudden temperature rise during the degreasing process, thereby further improving the product quality of the polytetrafluoroethylene film.

[0086] In one embodiment, to ensure that the degreasing rollers in the degreasing area can always be kept at a constant temperature, the step of adjusting the temperature of the degreasing rollers according to a preset adjustment rule until the second average temperature corresponding to the degreasing area reaches a preset second temperature range can be specifically performed as follows: when the second average temperature corresponding to the degreasing area is less than the preset second temperature range, the set temperature values ​​of the plurality of degreasing rollers are increased by a preset value simultaneously until the second average temperature of the degreasing area reaches the preset second temperature range; when the second average temperature corresponding to the degreasing area is greater than the preset second temperature range, the set temperature values ​​of the plurality of degreasing rollers are decreased by a preset value simultaneously until the second average temperature of the degreasing area reaches the preset second temperature range. During the temperature control center's adjustment of the temperatures of the plurality of degreasing rollers, the temperatures of the plurality of degreasing rollers are always kept constant, so that the polytetrafluoroethylene film in the degreasing area can be kept at a substantially constant temperature for continuous degreasing, thereby improving the stability of the polytetrafluoroethylene film during the degreasing process.

[0087] It should be noted that, under the premise that the second average temperature is within the second temperature range, several degreasing rollers can be in a state of the same temperature or in a state of different temperatures; when the temperature control center adjusts the temperature of the degreasing area, on the one hand, it maintains the second average temperature within the second temperature range, and on the other hand, it also maintains the temperature of several degreasing rollers consistent, thereby reducing the possibility that during the degreasing process of the polytetrafluoroethylene film, the temperature of several degreasing rollers is different, resulting in the polytetrafluoroethylene film being difficult to heat constantly and evenly, thereby affecting the degreasing effect, thereby further improving the degreasing effect of the degreasing equipment on the polytetrafluoroethylene film.

[0088] In one embodiment, in order to ensure that the cooling roller in the cooling area can always maintain a stable cooling state that gradually decreases along the conveying direction of the polytetrafluoroethylene film, the step of adjusting the temperature of the cooling roller according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range can be specifically performed as follows:

[0089] When the third average temperature corresponding to the cooling zone is less than a preset third temperature range, the set temperature of the cooling rollers is cyclically increased by a preset value in the same direction as the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling zone reaches the preset third temperature range. When the third average temperature corresponding to the cooling zone is greater than the preset third temperature range, the set temperature of the cooling rollers is cyclically decreased by a preset value in the opposite direction as the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling zone reaches the preset third temperature range. The adjustment logic of the cooling zone is opposite to that of the preheating zone, and examples are not repeated here. During the temperature control center's adjustment of the cooling roller temperatures, the cooling rollers can maintain a gradually decreasing temperature along the conveying direction of the polytetrafluoroethylene film, allowing the polytetrafluoroethylene film to be steadily and gradually cooled in the cooling zone. This further improves the cooling effect of the degreasing equipment on the polytetrafluoroethylene film, reduces the possibility of quality degradation of the polytetrafluoroethylene film due to a sharp drop in temperature after degreasing, and further improves the production quality of the polytetrafluoroethylene film.

[0090] In one embodiment, considering that when a heating roller fails and the temperature is difficult to adjust, the degreasing equipment needs to be shut down for maintenance, which affects the degreasing efficiency of the polytetrafluoroethylene film; in order to help improve the stability and degreasing efficiency of the degreasing equipment, the temperature control method of the polytetrafluoroethylene film degreasing equipment may further include the following steps:

[0091] The temperature control center obtains the temperature information of each heating roller fed back by the temperature monitoring component in real time. The temperature information of the heating roller includes the roller temperature and roller number. The roller temperature is the temperature value of the roller itself monitored by the temperature detection component. The roller number is pre-set by the staff, and each heating roller has a unique number. Then the temperature control center will compare the roller temperature in the roller temperature information with the preset normal value in real time. When the roller temperature corresponding to a certain heating roller is lower than the preset normal value, it is determined that the roller is an abnormal roller with a fault and the roller is repaired according to the The roller number of the abnormal roller corresponds to the roller type of the abnormal roller corresponding to the roller number, which is queried in the preset regional distribution database. The preset regional distribution database pre-stores the roller numbers corresponding to all heating rollers, as well as the roller type and position corresponding to each roller number. The roller types specifically include preheating rollers, degreasing rollers and cooling rollers. After the temperature control center inquires about the roller type of the abnormal roller, it will adjust the heating roller according to the queried roller type of the abnormal roller and the preset adjustment rules to maintain the normal operation of the degreasing equipment.

[0092] Adjusting the heating roller according to the roller type of the abnormal roller found and the preset adjustment rules specifically includes:

[0093] If the roller type of the abnormal roller is a preheating roller, the temperature control center will first determine the position of the abnormal roller. If the abnormal roller is the preheating roller farthest from the degreasing area, that is, the first preheating roller located at the entrance of the degreasing equipment; the degreasing roller closest to the preheating area will be temporarily adjusted and set as the preheating roller, and then the lowest temperature value in the second temperature range of the degreasing area will be increased by a preset value, and the second temperature range will be reset, that is, the lowest temperature in the second temperature range will be increased to make up for the lack of a degreasing roller; then the first average temperature of the preheating area and the second average temperature of the degreasing area will be calculated again, and the temperature of the preheating roller will be adjusted according to the preset adjustment rules until the first average temperature of the preheating area reaches the preset first temperature range; the temperature of the degreasing roller will be adjusted according to the preset adjustment rules until the second average temperature of the degreasing area reaches the reset second temperature range. Therefore, when the preheating roller farthest from the degreasing area in the degreasing equipment fails, the preheating area inside the degreasing equipment can still be maintained in a gradually warming preheating state under the adjustment of the temperature control system, and the degreasing area can also continue to degrease the polytetrafluoroethylene film normally, reducing the possibility of the degreasing equipment shutting down due to the failure of the heating roller, thereby improving the stability and degreasing efficiency of the degreasing equipment.

[0094] If the roller type of the abnormal roller is a degreasing roller, the second temperature range is reset after the lowest temperature value in the second temperature range is increased by a preset value; that is, the lower limit temperature value of the second temperature range is increased to make up for the absence of the degreasing roller; then the temperature of the degreasing roller is adjusted according to the preset adjustment rules until the second average temperature of the degreasing area reaches the reset second temperature range; at this time, the second average temperature of the degreasing area is always maintained in a higher temperature range, so that the polytetrafluoroethylene film can be degreased faster when passing through the degreasing area, thereby making up for the absence of a single degreasing roller; further reducing the possibility of the degreasing equipment shutting down due to a failure of the heating roller, thereby improving the stability and degreasing efficiency of the degreasing equipment.

[0095] If the roller type of the abnormal roller is a cooling roller, the temperature control center will first determine the position of the abnormal roller. If the abnormal roller is the cooling roller farthest from the degreasing area, the maximum temperature value in the third temperature range corresponding to the cooling area will be reduced by a preset value, and the third temperature range will be reset; that is, the maximum value of the third temperature range of the cooling area will be lowered so that the third temperature range can be maintained in a lower cooling area to make up for the lack of a single cooling roller; then the temperature of the cooling roller will be adjusted according to the preset adjustment rules until the third average temperature of the cooling area reaches the preset third temperature range; so that when the cooling roller farthest from the degreasing area in the degreasing equipment fails, under the adjustment of the temperature control system, the cooling area inside the degreasing equipment can still be maintained in a gradually cooling state, further reducing the possibility of the degreasing equipment shutting down due to the failure of the heating roller, thereby further improving the stability and degreasing efficiency of the degreasing equipment.

[0096] It should be noted that when a heating roller fails, the temperature control center will first determine the type of the failed roller. For the three abnormal situations, namely, the failed heating roller is the preheating roller farthest from the degreasing area, one of the degreasing rollers fails, and the failed heating roller is the cooling roller farthest from the degreasing area, the temperature control center can automatically adjust the heating roller so that the degreasing equipment can maintain normal degreasing work as much as possible under abnormal circumstances. During this period, the temperature control center will also send an alarm message to the staff's smart terminal to remind the staff to come for maintenance in time; and for abnormal conditions other than the above three abnormal conditions, the temperature control center will control the degreasing equipment to shut down and send an alarm message.

[0097] Figure 2 FIG. 1 is a flow chart of a temperature control method for a polytetrafluoroethylene film degreasing device according to an embodiment of the present invention. Figure 2The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows; unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps may be executed in other orders; and Figure 2 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0098] Based on the above method, the embodiment of the present application also discloses a temperature control system for polytetrafluoroethylene film degreasing equipment.

[0099] like Figure 4 As shown, the system is applied to a degreasing device, which includes a plurality of heating rollers arranged in a box. The plurality of heating rollers are pre-divided into preheating rollers, degreasing rollers, and cooling rollers. The temperature of the plurality of preheating rollers is pre-set to gradually increase along the conveying direction of the polytetrafluoroethylene film, the temperature of the plurality of degreasing rollers is pre-set to be the same, and the temperature of the plurality of cooling rollers is pre-set to gradually decrease along the conveying direction of the polytetrafluoroethylene film. An infrared imaging component is provided in the box for temperature monitoring of the heating roller area. The system includes:

[0100] The infrared image receiving module 401 is used to receive the infrared sensing image sent by the infrared imaging component;

[0101] A working area division module 402 is used to divide the infrared sensing image into a preheating area, a degreasing area, and a cooling area according to the position distribution of the preheating roller, the degreasing roller, and the cooling roller;

[0102] An average temperature calculation module 403 is used to calculate a first average temperature of the preheating area, a second average temperature of the degreasing area, and a third average temperature of the cooling area;

[0103] A preheating temperature adjustment module 404 is used to adjust the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range;

[0104] The heating temperature regulating module 405 is used to regulate the temperature of the degreasing roller according to a preset regulation rule until the second average temperature of the degreasing area reaches a preset second temperature range;

[0105] The cooling temperature adjustment module 406 is used to adjust the temperature of the cooling roller according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range.

[0106] In one embodiment, the preheating temperature adjustment module 404 is specifically used to increase the set temperature value of the preheating roller by a preset value in successive cycles in a direction opposite to the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range when the first average temperature is lower than the first temperature range; and to reduce the set temperature value of the preheating roller by a preset value in successive cycles in a direction the same as the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range when the first average temperature is higher than the first temperature range.

[0107] In one embodiment, the heating temperature adjustment module 405 is specifically used to increase the set temperature values ​​of several degreasing rollers by a preset value one by one at a time when the second average temperature is lower than the preset second temperature range, until the second average temperature of the degreasing area reaches the preset second temperature range; when the second average temperature is higher than the preset second temperature range, reduce the set temperature values ​​of several degreasing rollers by a preset value one by one at a time until the second average temperature of the degreasing area reaches the preset second temperature range.

[0108] In one embodiment, the cooling temperature adjustment module 406 is specifically used to increase the set temperature value of the cooling roller by a preset value in successive cycles in the same direction as the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling area reaches the preset third temperature range when the third average temperature is lower than the preset third temperature range; when the third average temperature is greater than the preset third temperature range, reduce the set temperature value of the cooling roller by a preset value in successive cycles in the direction opposite to the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling area reaches the preset third temperature range.

[0109] In one embodiment, Figure 5 As shown, the degreasing equipment also includes a temperature monitoring component arranged in the heating roller; the temperature control system of the polytetrafluoroethylene film degreasing equipment also includes an abnormal roller processing module 407, which is used to obtain the roller temperature information fed back by the temperature monitoring component in real time; the roller temperature information includes the roller temperature and the roller number; when there is an abnormal roller whose roller temperature is lower than the preset normal value, the roller type of the abnormal roller corresponding to the roller number is queried in the preset regional distribution database according to the roller number; the roller type includes preheating roller, degreasing roller and cooling roller; the heating roller is adjusted according to the roller type of the queried abnormal roller and the preset adjustment rules to maintain the normal operation of the degreasing equipment.

[0110] In one embodiment, the abnormal roller processing module 407 is specifically used to determine the position of the abnormal roller if the roller type of the abnormal roller is a preheating roller; if the abnormal roller is the preheating roller farthest from the degreasing area, the degreasing roller closest to the preheating area is temporarily adjusted to a preheating roller; after increasing the lowest temperature value in the second temperature range by a preset value, the second temperature range is reset; the first average temperature of the preheating area and the second average temperature of the degreasing area are calculated again; the temperature of the preheating roller is adjusted according to a preset adjustment rule until the first average temperature of the preheating area reaches the preset first temperature range; the temperature of the degreasing roller is adjusted according to the preset adjustment rule until the second average temperature of the degreasing area reaches the reset second temperature range.

[0111] In one embodiment, the abnormal roller processing module 407 is specifically used to increase the lowest temperature value in the second temperature range by a preset value and reset the second temperature range if the roller type of the abnormal roller is a degreasing roller; and adjust the temperature of the degreasing roller according to the preset adjustment rules until the second average temperature of the degreasing area reaches the reset second temperature range.

[0112] In one embodiment, the abnormal roller processing module 407 is specifically used to determine the position of the abnormal roller if the roller type of the abnormal roller is a cooling roller; if the abnormal roller is the cooling roller farthest from the degreasing area, the highest temperature value in the third temperature range is reduced by a preset value, and the third temperature range is reset; the temperature of the cooling roller is adjusted according to the preset adjustment rules until the third average temperature of the cooling area reaches the preset third temperature range.

[0113] The embodiment of the present application also discloses a degreasing device.

[0114] Specifically, the degreasing device includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and execute the temperature control method of the polytetrafluoroethylene film degreasing device.

[0115] The embodiment of the present application also discloses a computer-readable storage medium.

[0116] Specifically, the computer-readable storage medium stores a computer program that can be loaded by a processor and executed such as the temperature control method of the polytetrafluoroethylene film degreasing equipment mentioned above. The computer-readable storage medium includes, for example: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0117] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A temperature control method for polytetrafluoroethylene film degreasing equipment, characterized in that: The method is applied to a degreasing device, which includes a plurality of heating rollers arranged in a box, wherein the plurality of heating rollers are pre-divided into preheating rollers, degreasing rollers, and cooling rollers, respectively. The temperatures of the plurality of preheating rollers are pre-set to gradually increase along the conveying direction of the polytetrafluoroethylene film, the temperatures of the plurality of degreasing rollers are pre-set to be the same, and the temperatures of the plurality of cooling rollers are pre-set to gradually decrease along the conveying direction of the polytetrafluoroethylene film. An infrared imaging component for temperature monitoring of the heating roller area is provided in the box. The method includes: Receive infrared sensing images sent by the infrared imaging component; According to the position distribution of the preheating roller, degreasing roller and cooling roller, the infrared sensing image is divided into the preheating area, degreasing area and cooling area respectively; Calculating a first average temperature of the preheating area, a second average temperature of the degreasing area, and a third average temperature of the cooling area respectively; The temperature of the preheating roller is adjusted according to a preset adjustment rule until a first average temperature of the preheating area reaches a preset first temperature range; when the first average temperature is lower than the first temperature range, the set temperature value of the preheating roller is increased by a preset value in a cycle in a direction opposite to the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range; when the first average temperature is higher than the first temperature range, the set temperature value of the preheating roller is decreased by a preset value in a cycle in a direction identical to the conveying direction of the polytetrafluoroethylene film until the first average temperature of the preheating area reaches the preset first temperature range; The temperature of the degreasing roller is adjusted according to a preset adjustment rule until the second average temperature of the degreasing area reaches the preset second temperature range; when the second average temperature is lower than the preset second temperature range, the set temperature values ​​of the plurality of degreasing rollers are increased by a preset value at the same time until the second average temperature of the degreasing area reaches the preset second temperature range; when the second average temperature is higher than the preset second temperature range, the set temperature values ​​of the plurality of degreasing rollers are decreased by a preset value at the same time until the second average temperature of the degreasing area reaches the preset second temperature range; The temperature of the cooling roller is adjusted according to a preset adjustment rule until the third average temperature of the cooling area reaches the preset third temperature range; when the third average temperature is lower than the preset third temperature range, the set temperature value of the cooling roller is increased by a preset value in successive cycles in the same direction as the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling area reaches the preset third temperature range; when the third average temperature value is higher than the preset third temperature range, the set temperature value of the cooling roller is reduced by a preset value in successive cycles in the direction opposite to the conveying direction of the polytetrafluoroethylene film until the third average temperature of the cooling area reaches the preset third temperature range.

2. The method according to claim 1, characterized in that The degreasing equipment further includes a temperature monitoring component disposed in the heating roller; the method further includes: Real-time acquisition of roller temperature information fed back by the temperature monitoring component; the roller temperature information includes roller temperature and roller number; When there is an abnormal roller whose roller temperature is lower than a preset normal value, the roller type corresponding to the roller number is searched in a preset regional distribution database according to the roller number; the roller types include preheating rollers, degreasing rollers and cooling rollers; The heating roller is adjusted according to the roller type of the abnormal roller found out and the preset adjustment rules to maintain the normal operation of the degreasing equipment.

3. The method according to claim 2, characterized in that The adjusting of the plurality of heating rollers according to the roller type of the abnormal roller found out and the preset adjustment rules includes: If the roller type of the abnormal roller is a preheating roller, determining the position of the abnormal roller; If the abnormal roller is the preheating roller farthest from the degreasing area, the degreasing roller closest to the preheating area is temporarily adjusted to the preheating roller; After increasing the lowest temperature value in the second temperature range by a preset value, the second temperature range is reset; again calculating the first average temperature of the preheating area and the second average temperature of the degreasing area; Adjusting the temperature of the preheating roller according to a preset adjustment rule until the first average temperature of the preheating area reaches a preset first temperature range; The temperature of the degreasing roller is adjusted according to a preset adjustment rule until the second average temperature of the degreasing area reaches the reset second temperature range.

4. The method according to claim 2, characterized in that The adjusting of the plurality of heating rollers according to the roller type of the abnormal roller found out and the preset adjustment rules includes: If the abnormal roller is a degreasing roller, the second temperature range is reset after the lowest temperature value in the second temperature range is increased by a preset value; The temperature of the degreasing roller is adjusted according to a preset adjustment rule until the second average temperature of the degreasing area reaches the reset second temperature range.

5. The method according to claim 2, characterized in that The adjusting of the plurality of heating rollers according to the roller type of the abnormal roller found out and the preset adjustment rules includes: If the roller type of the abnormal roller is a cooling roller, determining the position of the abnormal roller; If the abnormal roller is the cooling roller farthest from the degreasing area, the highest temperature value in the third temperature range is reduced by a preset value, and the third temperature range is reset; The temperature of the cooling roller is adjusted according to a preset adjustment rule until the third average temperature of the cooling area reaches a preset third temperature range.

6. A degreasing device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the method according to any one of claims 1 to 4.

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