Transportation device for bottle bodies, control method of transportation device and tunnel type sterilizing and drying method

Abstract

The invention relates to the field of conveying devices, aims to solve the problem that an existing conveying device cannot adapt to speed adjustment of drying of different bottle bodies, and provides a bottle body conveying device, a control method of the bottle body conveying device and a tunnel type sterilizing and drying method. The conveying device comprises a feeding section, a collecting section and a working section which are connected in sequence; the acquisition section is provided with acquisition equipment; the feeding section and the collecting section are further provided with scanning equipment. The working section is provided with a hot air device; the collecting device, the scanning device, the hot air device and the conveying device are all connected with the controller. And after receiving and analyzing the information of the acquisition equipment and the scanning equipment, the controller regulates and controls the transportation speed of the conveying device. Related data of the bottle bodies are collected through the collecting section, and after the data of the bottle bodies and data of a previous batch of bottle bodies are compared and analyzed, through speed adjustment of the conveying device, the drying effect of the newly-replaced bottle bodies is ensured, and meanwhile the conveying speed is increased.

Description

Technical Field

[0001] The present invention relates to the field of transportation devices, and more particularly, to a transportation device for bottles, its control method, and a tunnel sterilization and drying method. Background Art

[0002] Before the bottles are filled with products, they often need to go through cleaning and drying operations. However, in the industrial production process, most of the same products have multiple specifications. When drying, sterilizing, and filling the contents of bottles with different specifications on the same production line, if the drying parameters remain unchanged, it is difficult to ensure the drying and sterilization effects while reducing energy consumption, improving production efficiency, and reducing production costs. Therefore, there is an urgent need for a transportation device for bottles, which can regulate the transportation speed of the bottles, ensure the drying effect of the bottles, improve the conveying speed of the bottles, and thus improve production efficiency, reduce temperature control costs, and energy consumption costs caused by heat overflow drying requirements. Summary of the Invention

[0003] The purpose of the present invention is to provide a transportation device for bottles, which solves the problem that the existing transportation device cannot adaptively adjust the speed for drying different bottles, and can improve production efficiency while reducing production costs.

[0004] Another purpose of the present invention is to provide a control method, which solves the problem of high production costs when drying, sterilizing, and filling the contents of bottles with different specifications on the same production line in the prior art.

[0005] The purpose of the present invention is also to provide a tunnel sterilization and drying method, which can improve production efficiency and reduce production costs by regulating the variable speed efficiency of the bottle feeding section and the conveying device.

[0006] The embodiments of the present invention are implemented through the following technical solutions:

[0007] A transportation device for bottles includes: a conveying device, a collecting device, a scanning device, and a hot air device. The conveying device includes: a feeding section, a collecting section, and a working section connected in sequence; the collecting section is provided with a collecting device for collecting the morphological information of the bottles; the feeding section and the collecting section are also provided with the scanning device for scanning the identification code on the bottles, and the identification code is used to identify the material and / or material information of the bottles, and the material information includes the maximum applicable temperature; the working section is provided with a hot air device for heating the bottles; the collecting device, the scanning device, the hot air device, and the conveying device are all connected to a controller; after receiving and analyzing the information of the collecting device and the scanning device, the controller regulates the transportation speed of the conveying device.

[0008] A control method for the transportation device includes:

[0009] Obtain the original bottle data and the replaced bottle data through the acquisition device, and obtain the similarity ratio k, the first diameter-height ratio m, and the second diameter-height ratio n of the original bottle and the replaced bottle; m = bottleneck diameter / bottleneck height; n = belly diameter / belly height;

[0010] Obtain the transportation speed v of the original bottle 0 ;

[0011] According to the original bottle data, the replaced bottle data, and v 0 Analyze to obtain the transportation speed v of the replaced bottle.

[0012] Preferably,

[0013] v = akv' 0 +bmv' 0 +cnv' 0 , where a is the first correction coefficient, b is the second correction coefficient, c is the third correction coefficient, and v' 0 is the speed parameter; when the materials of the original bottle and the replaced bottle are the same, v' 0 = v 0 .

[0014] Preferably, it includes:

[0015] Obtain the bottle thickness ratio f, f = D / d, where D is the thickness of the original bottle and d is the thickness of the replaced bottle;

[0016] Obtain the bottle thermal conductivity ratio p, p = Q / q, where Q is the thermal conductivity of the material used for the original bottle and q is the thermal conductivity of the material used for the replaced bottle;

[0017] Obtain the bottle thermal resistance ratio A, A = f / p;

[0018] Obtain the first correction coefficient a, a = A , is the correction constant.

[0019] Preferably, when the materials of the original bottle and the replaced bottle are different, obtain the drying temperature T of the original bottle 0 ;

[0020] Obtain the maximum applicable temperature T of the replaced bottle max , and obtain the bottle applicable temperature ratio i, i = T max / T 0 ;

[0021] Obtain the transportation speed v of the replaced bottle when the drying temperature is T max , v = akv' 0 +bmv' 0 +cnv' 0 , where v'0 = iv 0 where a is the first correction coefficient, b is the second correction coefficient, and c is the third correction coefficient.

[0022] A tunnel sterilization and drying method includes:

[0023] Obtaining the maximum applicable temperature T of the replacement bottle body through the described control method max and the transportation speed v;

[0024] The sections to which the control method is applied include a bottle replacement placement section, a same-bottle placement section, and a drying section that are connected in sequence; when the bottle body being loaded is the same as the bottle body in the drying section, the bottle body is loaded on the same-bottle placement section; when the bottle body being loaded is different from the bottle body in the drying section, the bottle body is loaded on the bottle replacement placement section or the same-bottle placement section;

[0025] The regulation method when replacing the bottle body includes:

[0026] Obtaining the minimum time t required when the temperature in the drying section changes from the drying temperature T of the original bottle body 0 to the maximum applicable temperature T of the replacement bottle body max ; min ;

[0027] Adjusting the variable speed efficiency of the conveying device so that the variable speed time t of the conveying device is ≥ t min and the moving distance l during the variable speed process is ≤ L, where L is the length of the same-bottle placement section, and the variable speed time is the time taken for the conveying speed of the conveying device to change from the transportation speed v of the original bottle body 0 to the transportation speed v of the replacement bottle body.

[0028] Preferably, it includes:

[0029] S100. Obtaining the speed difference ∆v and the temperature difference ∆T, ∆v = v - v 0 , ∆T = T max - T 0 ; v is the transportation speed of the replacement bottle body, v 0 is the transportation speed of the original bottle body, T max is the maximum applicable temperature of the replacement bottle body, T 0 is the drying temperature of the original bottle body;

[0030] S200. When ∆v > 0 and ∆T < 0, the replacement bottle body is loaded on the same-bottle placement section;

[0031] When ∆v < 0 and ∆T > 0, the replacement bottle body is loaded on the bottle replacement placement section and the variable speed efficiency of the conveying device is adjusted so that the variable speed time t of the conveying device is ≥ t min and the moving distance l during the variable speed process is ≤ L;

[0032] When ∆v×∆T > 0, replace the bottle body and load it on the bottle replacement placement section, and adjust the variable speed efficiency of the conveying device so that the variable speed time t of the conveying device ≥ t min and the moving distance l during the variable speed process ≤ L.

[0033] Preferably, the S200 further includes: when ∆v×∆T > 0, obtain the placement parameter B, B = T / v 0 -T max / v;

[0034] When B ≥ 0, replace the bottle body and load it on the same bottle placement section; when B < 0, replace the bottle body and load it on the bottle replacement placement section, and adjust the variable speed efficiency of the conveying device so that the variable speed time t of the conveying device ≥ t min and the moving distance l during the variable speed process ≤ L.

[0035] Preferably, the drying section includes a preheating section and a high-temperature section, and the control method is used for the high-temperature section.

[0036] Preferably, the temperature control method of the preheating section includes:

[0037] A100. Obtain the transportation speed v of the replaced bottle body and the preheating temperature T that the replaced bottle body needs to reach 1 , T 1 <T max ;

[0038] A200. Obtain the bottle body temperature T when the replaced bottle body leaves the preheating section under the preset preheating conditions 2 ; when T 2 ≥T 1 the preheating section does not adjust the temperature; the preset preheating conditions include that the temperature of the preheating section is equal to the preheating temperature of the original bottle body, and the transportation speed of the replaced bottle body is v;

[0039] When T 2 <T 1 the preheating section performs temperature increase control;

[0040] When T 2 <T 1 the preheating section is heated to T 3 , ; where T 4 is the temperature of the bottle body before entering the preheating section, s is the length of the preheating section, v is the transportation speed of the replaced bottle body, and k is a proportionality constant.

[0041] The present invention has at least the following beneficial effects:

[0042] After dividing the conveying device into a loading section, a collection section, and a working section, the present invention collects relevant data of the bottle body through the collection section. Then, after comparing and analyzing the data of the bottle body with the data of the previous batch of bottle bodies, the conveying speed of the conveying device can be adjusted to ensure the drying effect while increasing the conveying speed of the newly replaced bottle body. The present invention controls the transportation speed of the bottle body through the bottle body data, and further controls the residence time of the bottle body in the drying section, which can ensure the drying and sterilization effect of the bottle body and improve the production efficiency without changing the temperature in the drying section. After dividing the loading section into a bottle replacement placement section and a same-bottle placement section, the present invention can improve the drying and sterilization efficiency by selecting the placement section under different working conditions while ensuring the drying and sterilization effect of the bottle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0044] Figure 1 Structural schematic diagram of the transportation device for the bottle body;

[0045] Figure 2 Top view during the transportation of the bottle body;

[0046] Figure 3 Drying schematic diagram when the bottle body is not replaced;

[0047] Figure 4 Drying schematic diagram when the bottle body is replaced;

[0048] Reference numerals: 1 - conveying device, 11 - loading section, 111 - bottle replacement placement section, 112 - same-bottle placement section, 12 - collection section, 13 - working section, 2 - preheating section, 3 - drying section, 4 - collection device, 5 - scanning device, 6 - hot air device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0050] Example 1: As Figure 1As shown in the figure, a transportation device for a bottle body includes: a conveying device 1, a collection device 4, a scanning device 5, and a hot air device 6. The conveying device 1 includes: a loading section 11, a collection section 12, and a working section 13 that are connected in sequence. The collection section 12 is provided with a collection device 4, and the collection device 4 is used to collect the morphological information of the bottle body. The loading section 11 and the collection section 12 are also provided with the scanning device 5. The scanning device 5 is used to scan the identification code on the bottle body, and the identification code is used to identify the material and / or material information of the bottle body. The material information includes the maximum applicable temperature. The working section 13 is provided with a hot air device 6, and the hot air device 6 is used for heating the bottle body. The collection device 4, the scanning device 5, the hot air device 6, and the conveying device 1 are all connected to a controller. After receiving and analyzing the information of the collection device 4 and the scanning device 5, the controller adjusts the transportation speed of the conveying device 1.

[0051] In the specific implementation process, the controller can adopt a single-chip microcomputer or a PLC control cabinet. The collection device 4 can adopt a photographic device, and the identification code can adopt a bar code or a two-dimensional code, etc.

[0052] During the working process, the bottle body can be placed on the loading section 11 by a manipulator or manually. Of course, the loading section 11 can also be directly connected to the front working area through a transportation device, and the bottle body can be transported from the front working area to the loading section 11. When loading, the identification code on the first bottle body can be scanned to identify the material of the bottle body or directly obtain the maximum applicable temperature corresponding to the material. After the bottle body enters the collection section 12, the morphological information of the bottle body is collected by the collection device 4. According to the morphological information and material information of the new and old bottle bodies, etc., the optimal transportation speed of the new bottle body can be obtained. At the optimal transportation speed, not only can the drying effect of the bottle body be ensured, but also the transportation speed can be kept as high as possible, thereby improving production efficiency. By adjusting the speed to ensure the drying effect, rather than directly regulating the temperature and ignoring the transportation speed, energy consumption can also be reduced and production costs can be lowered.

[0053] Embodiment 2: A control method for the transportation device includes:

[0054] Obtain the original bottle body data and the replaced bottle body data to obtain the similarity ratio k, the first diameter-height ratio m, and the second diameter-height ratio n of the original bottle body and the replaced bottle body; m = bottleneck diameter / bottleneck height; n = bottle belly diameter / bottle belly height;

[0055] Obtain the transportation speed v of the original bottle body 0 ;

[0056] Obtain the transportation speed v of the replaced bottle body, v = akv' 0 +bmv' 0 +cnv' 0 , a is the first correction coefficient, b is the second correction coefficient, c is the third correction coefficient, v'0 is the speed parameter; when the materials of the original bottle body and the replacement bottle body are the same, v' 0 = v 0 .

[0057] In the specific implementation process, the bottleneck diameter refers to the inner diameter of the bottleneck, and the belly diameter refers to the outer diameter of the belly. The segmentation of the bottleneck and the belly can be carried out according to the actual situation. For example, the outer walls of the bottlenecks of most bottle bodies are vertical. During the downward extension of the outer wall, the first inflection point can be used as the separation point between the bottleneck and the belly.

[0058] The bottle body data can be obtained through existing image acquisition technologies. Exemplarily, an image acquisition device is set above the bottle body to obtain information such as the inner and outer diameters of the bottleneck, the inner and outer diameters of the belly, and the thickness of the bottle body. An image acquisition device is set on the side of the bottle body to obtain information such as the height and outer diameter of the bottleneck, and the height and outer diameter of the belly. If the belly is not a regular cylinder, its average outer diameter can be obtained through image analysis. For example, multiple equally divided points are set in the height direction of the belly, and after obtaining the diameters at each equally divided point position, the sum is calculated and the average value is taken. The closer the distance between the equally divided points and the more the equally divided points, the more accurate the value of the average outer diameter. The acquisition device can be a camera device or a three-dimensional scanning device.

[0059] The shapes of the original bottle body and the replacement bottle body are similar; being similar in shape means having the same shape but different sizes. The similarity ratio k can be obtained through the comparative analysis of the original bottle body image and the replacement bottle body image. For example, calculate the ratio of the bottleneck height of the original bottle body to the bottleneck height of the replacement bottle body, and record this ratio as k.

[0060] The first correction coefficient a, the second correction coefficient b, and the third correction coefficient c can be obtained from historical data after multiple tests, and the sum of a, b, and c can be equal to 1. In industrial applications, in different application scenarios, the basic shape of the bottle body will change, so a, b, and c may change according to different application scenarios and can be measured by oneself.

[0061] Drying is a process with a large amount of energy consumption. Therefore, how to reduce energy consumption is one of the factors that the control method needs to consider. In addition, the transportation speed of the bottle body will also affect the overall drying efficiency. Therefore, maintaining a relatively high transportation speed as much as possible is also one of the factors that the control method needs to consider.

[0062] When the bottle body is used to hold liquid medicine, after the bottle body is dried, the liquid medicine is filled through a filling production line. Therefore, the drying of the bottle body not only needs to fully remove moisture, but also needs to be sterilized at a high temperature to ensure that the liquid medicine will not be contaminated. However, the temperature required for sterilization is generally relatively high, such as 350 °C. When regulating the temperature preferentially during the drying process, it may lead to a poor sterilization effect in the end. In addition, the change of temperature is also restricted by the material of the bottle body, such as the melting point of the material, the thermal stress of the material during temperature change, etc. Therefore, in the drying control of this embodiment, the conveying speed of the bottle body is preferentially selected to be regulated, and then the residence time of the bottle body in the drying section 3 is adjusted. The bottle body is usually transported by a conveyor belt, so regulating the conveying speed of the conveyor belt can regulate the transportation speed of the bottle body. The drying and sterilization process of the bottle body is related to the shape and size of the bottle body, etc. When the shapes of the bottle bodies are the same, the applicant selects several factors with the highest importance among the factors affecting the drying and sterilization process of the bottle body: k, m, and n.

[0063] Exemplarily, the original bottle body has good drying and sterilization effects at the transportation speed v 0 and the original drying temperature. When the bottle body needs to be replaced, first obtain the bottle body data, calculate k, m, and n, and then obtain the transportation speed v of the original bottle body 0 , and then through v = akv' 0 +bmv' 0 +cnv' 0 obtain the transportation speed of the replaced bottle body, and then carry out the regulation of the conveying device.

[0064] Exemplarily, the method for judging the drying and sterilization effect of the bottle body: after the bottle body A passes through the drying section 3, detect the drying effect of the bottle body through an infrared moisture meter or a drying method, etc., and detect the sterilization effect of the bottle body through a biological indicator or a chemical indicator, etc.

[0065] Exemplarily, a, b, and c are obtained through multiple tests. When the original bottle body and the replaced bottle body are only different in size, the transportation speed corresponding to different bottle body data can be obtained by regulating the transportation speed and detecting the drying and sterilization effects.

[0066] Embodiment 3: In order to increase the applicability of the control method, improvements are made on the basis of Embodiment 2. In this embodiment, the control method further includes:

[0067] Obtain the bottle body thickness ratio f, f = D / d, where D is the thickness of the original bottle body and d is the thickness of the replaced bottle body;

[0068] Obtain the bottle body thermal conductivity ratio p, p = Q / q, where Q is the thermal conductivity of the material used for the original bottle body and q is the thermal conductivity of the material used for the replaced bottle body;

[0069] Obtain the bottle body thermal resistance ratio A, A = f / p;

[0070] Obtain the first correction coefficient a, , which is a correction constant.

[0071] In the specific implementation process, it can be obtained from the historical data of multiple tests. Since when drying the bottle body, the hot air will not only directly enter the bottle body, but also transfer heat to the inside of the bottle through the bottle wall outside the bottle body. Therefore, in this embodiment, the thermal resistance ratio of the bottle body is additionally considered. When the materials and thicknesses of the replaced bottle body and the original bottle body are the same, the control method provided in Embodiment 1 can be directly adopted. When the materials of the replaced bottle body and the original bottle body are the same but the thicknesses are different, the control method provided in this embodiment can be adopted.

[0072] Embodiment 4: In order to further improve the applicability of the control method, an improvement is made on the basis of Embodiment 3. In this embodiment, when the materials of the original bottle body and the replaced bottle body are different, obtain the drying temperature T of the original bottle body 0 ;

[0073] Obtain the maximum applicable temperature T of the replaced bottle body max , and obtain the bottle body applicable temperature ratio i, i = T max / T 0 ;

[0074] Obtain the transportation speed v of the replaced bottle body when the drying temperature is T max , v = akv' 0 +bmv' 0 +cnv' 0 , where v' 0 =iv 0 , a is the first correction coefficient, b is the second correction coefficient, and c is the third correction coefficient.

[0075] In the specific implementation process, if the materials of the replaced bottle body are different, the maximum applicable temperature during drying will change. Under the condition of controlling other variables, theoretically, the higher the temperature, the higher the conveying speed of the bottle body can be increased, thereby improving the drying and sterilization efficiency. Of course, if the heat resistance of the replaced bottle body material is poor, the drying temperature may also be lowered, and then the transportation speed can be reduced to a certain extent. As can be seen from the foregoing, when the bottle body materials are different, in order to ensure either production efficiency or bottle body safety, it is necessary to adjust the temperature. This embodiment provides a method for adjusting the transportation speed corresponding to the replaced bottle body when the drying temperature changes.

[0076] Embodiment 5: This embodiment provides a tunnel-type sterilization and drying method, including:

[0077] Obtain the maximum applicable temperature T and the transportation speed v of the replaced bottle body through the control method described above; max

[0078] The work sections to which the control method is applied include a bottle-changing placement section 111, an identical-bottle placement section 112, and a drying section 3 that are connected in sequence; when the bottle being loaded is the same as the bottle in the drying section 3, the bottle is loaded on the identical-bottle placement section 112; when the bottle being loaded is different from the bottle in the drying section 3, the bottle is loaded on the bottle-changing placement section 111 or the identical-bottle placement section 112;

[0079] The regulation method when changing the bottle includes:

[0080] Obtain the minimum time t required when the temperature of the drying section 3 changes from the drying temperature T of the original bottle 0 to the maximum applicable temperature T of the replaced bottle max ; min ;

[0081] Adjust the variable-speed efficiency of the conveying device so that the variable-speed time t of the conveying device satisfies t≥t min and the moving distance l during the variable-speed process satisfies l≤L, where L is the length of the identical-bottle placement section 112, and the variable-speed time is the time taken for the conveying speed of the conveying device to change from the transportation speed v 0 of the original bottle to the transportation speed v of the replaced bottle.

[0082] In the specific implementation process, the moving distance l refers to the conveying distance of the bottle or the moving distance of a certain point on the conveyor belt. The variable-speed efficiency refers to the acceleration when a certain point on the conveyor belt moves. Tunnel sterilization and drying is an efficient continuous processing method, widely used in industries such as pharmaceuticals and food processing, for sterilizing and drying containers or packaging materials such as bottles and jars. This method uses tunnel-type equipment to complete the processes of conveying, sterilizing, and drying items through a continuous process.

[0083] Exemplarily, the placement method of the bottle can be as Figure 2 shown, using a relatively narrow conveyor belt with one bottle in a row, or as Figure 3 shown, using a conveyor belt with a certain width and placing multiple bottles in a row to improve production efficiency. The picking and placing of the bottle can be done manually or through robotic arms, robotic claws, and negative pressure suction cups, etc. The device for picking and placing the bottle, such as a robotic claw, can have a moving range on the horizontal plane spanning from the bottle-changing placement section 111 to the identical-bottle placement section 112. Multiple robotic claws can be integrated on a moving base to achieve picking multiple bottles at one time.

[0084] Exemplarily, the variable-speed efficiency can be determined by v, v 0 , t, and L using the basic acceleration formula. In addition, L needs to have a certain length to ensure that the variable-speed time t≥t min , and L can be set manually. When the length of L is difficult to meet t≥t minWhen necessary, the feeding position of the bottle replacement placement section 111 on the bottle body can be appropriately moved so that the feeding position deviates from the same-bottle placement section 112 to a certain extent. Thus, the area of the bottle replacement placement section 111 can be larger than the total placement area occupied by the mechanical claw when picking up the bottle body at one time, so as to adjust the placement position.

[0085] When the bottle body does not need to be replaced, it can be as Figure 3 shown. The bottle body is fed on the same-bottle placement section 112 to achieve continuous production. However, when replacing the bottle body, if the heat energy required for a single bottle body to achieve a good drying and sterilization effect increases, and still feeding continuously in the manner as Figure 3 shown at this time, it may cause insufficient drying and sterilization of the replaced bottle body in the initial feeding. Therefore, in this embodiment, an additional bottle replacement placement section 111 is provided. The bottle body for replacement is fed on the bottle replacement placement section 111, and the distance of the same-bottle placement section 112 can be fully utilized to complete the speed regulation of the conveying device and the temperature regulation of the drying section 3 before the replaced bottle body enters the drying section 3.

[0086] Embodiment 6: In order to further improve the drying and sterilization efficiency, improvements are made on the basis of Embodiment 5. In this embodiment, it includes:

[0087] S100. Obtain the speed difference ∆v and the temperature difference ∆T, ∆v = v - v 0 , ∆T = T max -T 0 ; v is the transportation speed of the replaced bottle body, v 0 is the transportation speed of the original bottle body, T max is the maximum applicable temperature of the replaced bottle body, T 0 is the drying temperature of the original bottle body;

[0088] S200. When ∆v > 0 and ∆T < 0, the replaced bottle body is fed on the same-bottle placement section 112;

[0089] When ∆v < 0 and ∆T > 0, the replaced bottle body is fed on the bottle replacement placement section 111 and the variable-speed efficiency of the conveying device is adjusted so that the variable-speed time t of the conveying device ≥ t min and the moving distance l during the variable-speed process ≤ L.

[0090] In the specific implementation process, although when replacing the bottle body, all follow Figure 4 shown, feeding on the bottle replacement placement section 111 can ensure the drying and sterilization effect of the bottle body. However, if all feeding is on the bottle replacement placement section 111 when replacing the bottle body, it may lead to a decrease in production efficiency. For example, when the heat energy required for drying and sterilizing a single original bottle body is higher than that of the replaced bottle body, even if the replaced bottle body is as Figure 3As shown, adjacent to the feeding of the original bottle body, a good drying and sterilization effect can also be achieved, that is, there is no need to wait for the speed regulation of the conveying device and the temperature regulation of the drying section 3 to be completed, and thus the drying and sterilization efficiency is improved. When the heat energy required for drying and sterilizing a single original bottle body is lower than that for replacing the bottle body, then in accordance with Figure 4 shown for feeding. The method provided in this embodiment further improves the drying and sterilization efficiency while ensuring the drying and sterilization effect.

[0091] When ∆v = 0 and ∆T > 0, the replacement bottle body can be fed on the bottle replacement placement section 111; when ∆v = 0 and ∆T < 0, the replacement bottle body can be fed on the same bottle placement section 112; when ∆v > 0 and ∆T = 0, the replacement bottle body can be fed on the same bottle placement section 112; when ∆v < 0 and ∆T = 0, the replacement bottle body can be fed on the bottle replacement placement section 111; when ∆v = 0 and ∆T = 0, the replacement bottle body can be fed on the same bottle placement section 112.

[0092] For the two cases of ∆v > 0 and ∆T > 0, ∆v < 0 and ∆T < 0, there are at least two ways to select the placement section, specifically refer to Embodiment 6 and Embodiment 7.

[0093] To further improve the drying and sterilization efficiency, in this embodiment, the S200 further includes: when ∆v × ∆T > 0, the replacement bottle body is fed on the bottle replacement placement section 111 and the variable speed efficiency of the conveying device is adjusted so that the variable speed time t of the conveying device ≥ t min and the moving distance l during the variable speed process ≤ L.

[0094] In the specific implementation process, for the two cases of ∆v > 0 and ∆T > 0, ∆v < 0 and ∆T < 0, the replacement bottle body is directly fed on the bottle replacement placement section 111.

[0095] Embodiment 7: To further improve the drying and sterilization efficiency, on the basis of Embodiment 6, an improvement is made. In this embodiment, the S200 further includes: when ∆v × ∆T > 0, obtain the placement parameter B, B = T / v 0 -T max / v;

[0096] When B ≥ 0, the replacement bottle body is fed on the same bottle placement section 112; when B < 0, the replacement bottle body is fed on the bottle replacement placement section 111 and the variable speed efficiency of the conveying device is adjusted so that the variable speed time t of the conveying device ≥ t min and the moving distance l during the variable speed process ≤ L.

[0097] In the specific implementation process, when ∆v × ∆T > 0, it is impossible to directly determine whether the drying and sterilization parameters of the original bottle body can meet those of the replaced bottle body. Thus, the replaced bottle body can be directly selected for feeding on the bottle replacement placement section 111, thereby ensuring the drying and sterilization effect of the replaced bottle body. However, to a certain extent, the drying and sterilization efficiency is sacrificed. Therefore, in this embodiment, in order to further improve the drying and sterilization efficiency, the feeding segmentation control is carried out under the condition of ∆v × ∆T > 0.

[0098] Embodiment 8: In order to make the control method better applicable to tunnel sterilization and drying, improvements are made on the basis of Embodiments 5 - 7. In this embodiment, the drying section 3 includes a preheating section 2 and a high-temperature section, and the control method is used for the high-temperature section.

[0099] In the specific implementation process, preheating can increase the temperature on the surface and inside of the bottle, making it easier for moisture to evaporate. Since the drying process mainly removes moisture by heating water molecules from the liquid state to the gaseous state, preheating can shorten the time required to reach the drying temperature and accelerate the entire drying process. The preheating step helps reduce the energy consumption required in the main drying stage. Because the bottle has reached a certain temperature before entering the drying equipment, the drying equipment does not need to consume a large amount of additional energy to heat the bottle from room temperature or a lower temperature to a temperature suitable for rapid moisture evaporation. When a bottle with a low temperature suddenly enters a high-temperature drying environment, a short-term condensation phenomenon may occur on the surface of the bottle, which will increase the subsequent drying difficulty and may affect the final drying effect. By preheating the bottle, this situation can be effectively avoided, ensuring the drying quality. For some materials sensitive to temperature changes (such as certain plastics), direct high-temperature drying may cause deformation or other damage. Appropriate preheating can help these materials transition to the drying temperature more smoothly and reduce the risk of stress damage caused by sudden temperature changes.

[0100] Exemplarily, the evaporation of moisture on the bottle body may mainly occur in the preheating section 2, and the high-temperature section is used for sterilization; of course, it may also partially occur in the preheating section 2 and partially occur in the high-temperature section.

[0101] Embodiment 9: In this embodiment, the temperature control method of the preheating section 2 includes:

[0102] A100. Obtain the transportation speed v of the replaced bottle body and the preheating temperature T that the replaced bottle body needs to reach 1 , T 1 <T max ;

[0103] A200. Obtain the bottle body temperature T of the replaced bottle body when it leaves the preheating section 2 under the preset preheating conditions 2 ; When T 2 ≥T 1When it is, the preheating section 2 does not adjust the temperature; the preset preheating condition includes that the temperature of the preheating section 2 is equal to the original bottle preheating temperature, and the transportation speed of replacing the bottle is v;

[0104] When T 2 <T 1 When it is, the preheating section 2 performs temperature increase regulation.

[0105] In the specific implementation process, in order to improve production efficiency, the temperature of the high-temperature section can often reach the highest temperature applicable to the bottle body. Therefore, it is difficult to further increase the temperature of the high-temperature section. However, the temperature of the preheating section 2 is lower than the aforementioned highest temperature, so it still has a certain adjustable space. In order to reduce the thermal stress of the bottle body when entering the high-temperature section, the temperature of the preheated bottle body should not have too large a difference from the temperature of the high-temperature section. However, in this embodiment, the adjustment of the transportation speed is involved when replacing the bottle body. Therefore, the regulation of the preheating section 2 is necessary. If the transportation speed of the bottle body in the preheating section 2 is regulated, it will lead to a significant increase in the complexity of production control. Each round of bottles entering the drying section 3 will correspond to a speed regulation of the transportation device. Under the superposition of regulation deviations, the deviation of the drying and sterilization effect of the bottle body will also become larger and larger during continuous production, thereby increasing the frequency of shutdown for maintenance. Therefore, in this embodiment, the preheating temperature of the preheating section 2 is preferentially regulated. When the temperature of the preheating section 2 is difficult to make the replaced bottle body reach the optimal preheating temperature, the temperature of the preheating section 2 can be increased. T 1 Is equivalent to the preheating temperature threshold, and the temperature of the preheated bottle body needs to reach at least T 1 . T 1 The size of can be determined according to the actual situation, and the factors that can be referred to can include the material of the bottle body and the temperature of the high-temperature section, etc. In order to ensure the unity of the working conditions of the high-temperature section, the evaporation of moisture can be completed in the preheating section 2, and then T 1 The size of can also consider the drying degree of the bottle body. T 1 Can be equal to 0.8 T max ~0.9 T max .

[0106] Example 10: This embodiment provides a method for regulating the temperature increase of the preheating section 2. When T 2 <T 1 When it is, the preheating section 2 is heated up to T 3 , ; among them, T 4 Is the temperature of the bottle body before entering the preheating section 2, s is the length of the preheating section 2, v is the transportation speed of replacing the bottle body, and k is a proportionality constant.

[0107] In the specific implementation process, e is the natural constant, and the size of k can be calculated from the historical data obtained through multiple tests. The temperature of the bottle body leaving the preheating section 2 may not reach the hot air temperature of the preheating section 2. Therefore, this embodiment divides T 2 And T3 。T 4 The current ambient temperature can be selected, and the ambient temperature can be collected by a temperature sensor. At T 1 、T 4 、s and v are all known quantities, the value of T 3 can be obtained. When changing the placement section for feeding, it can also ensure that the temperature control of the preheating section 2 is completed before the bottle body enters the preheating section 2.

[0108] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bottle transport device, characterized in that: include: A conveying device (1), the conveying device (1) comprising: a loading section (11), a collecting section (12) and a working section (13) connected in sequence; A collection device (4), the collection section (12) is provided with the collection device (4), and the collection device (4) is used to collect the morphological information of the bottle body; A scanning device (5), the feeding section (11) or the collecting section (12) is provided with the scanning device (5), the scanning device (5) is used to scan the identification code on the bottle body, the identification code is used to identify the material and / or material information of the bottle body, the material information includes the maximum applicable temperature; A hot air device (6), the working section (13) is provided with a hot air device (6), and the hot air device (6) is used for heating the bottle body; The acquisition device (4), the scanning device (5), the hot air device (6) and the conveying device (1) are all connected to the controller; After receiving and analyzing the information from the acquisition device (4) and the scanning device (5), the controller adjusts the transport speed of the conveying device (1).

2. A control method for the transport device according to claim 1, characterized in that: include: The original bottle body data and the replacement bottle body data are acquired through the acquisition device, and the similarity ratio k, the first diameter-to-height ratio m and the second diameter-to-height ratio n of the original bottle body and the replacement bottle body are obtained; m=neck diameter / neck height; n=bottle belly diameter / bottle belly height; Get the transportation speed v0 of the original bottle; The transport speed v of the replacement bottle is obtained based on the original bottle data, the replacement bottle data and v0.

3. The control method according to claim 2, characterized in that: v=akv'0+bmv'0+cnv'0, a is the first correction coefficient, b is the second correction coefficient, c is the third correction coefficient, and v'0 is the speed parameter; when the material of the original bottle body and the replacement bottle body is the same, v'0= v0.

4. The control method according to claim 3, characterized in that: include: Obtain the bottle thickness ratio f, f=D / d, D is the thickness of the original bottle, d is the thickness of the replaced bottle; Obtain the thermal conductivity ratio p of the bottle body, p=Q / q, Q is the thermal conductivity of the material used for the original bottle body, and q is the thermal conductivity of the material used for the replacement bottle body; Get the thermal resistance ratio of the bottle body A, A=f / p; Get the first correction coefficient a, , is the correction constant.

5. The control method according to claim 4, characterized in that: When the original bottle body and the replacement bottle body are made of different materials, obtaining a drying temperature T0 of the original bottle body; Get the highest applicable temperature T for replacing the bottle max , get the applicable temperature ratio i of the bottle, i= T max / T0; Get the drying temperature as T max When the bottle is replaced, the transport speed v is v=akv'0+bmv'0+cnv'0, where v'0= iv0, a is the first correction coefficient, b is the second correction coefficient, and c is the third correction coefficient.

6. A tunnel sterilization and drying method, characterized in that: include: The maximum applicable temperature T for replacing the bottle body is obtained by the control method described in any one of claims 2 to 5. max and transport speed v; The control method is applied to the working sections including the bottle changing and placing section, the same bottle placing section and the drying section which are connected in sequence; when the bottle body to be loaded is the same as the bottle body in the drying section, the bottle body is loaded in the same bottle placing section; when the bottle body to be loaded is different from the bottle body in the drying section, the bottle body is loaded in the bottle changing and placing section or the same bottle placing section; The control methods when replacing the bottle include: The temperature of the drying section changes from the drying temperature T0 of the original bottle to the highest applicable temperature T of the replaced bottle. max The minimum time t required is min ; Adjust the speed change efficiency of the conveying device so that the speed change time of the conveying device t≥t min The moving distance l≤L during the speed change process, L is the length of the same bottle placement section, and the speed change time is the time taken by the conveying speed of the conveying device to change from the original bottle body transport speed v0 to the replacement bottle body transport speed v.

7. The tunnel sterilization and drying method according to claim 6, characterized in that: include: S100, obtain speed difference ∆v and temperature difference ∆T, ∆v = v-v0, ∆T = T max -T0; v is the transportation speed of the replacement bottle, v0 is the transportation speed of the original bottle, T max is the maximum applicable temperature for replacing the bottle, T0 is the drying temperature of the original bottle; S200, when ∆v>0 and ∆T<0, replace the bottle body and load the material in the same bottle placement section (112); When ∆v<0 and ∆T>0, the bottle body is replaced and loaded in the bottle replacement and placement section (111) and the speed change efficiency of the conveying device is adjusted so that the speed change time t≥t min And the moving distance during the speed change process l≤L; When ∆v×∆T>0, replace the bottle body and load it in the bottle replacement section and adjust the speed change efficiency of the conveyor device so that the speed change time t≥t min And the moving distance l≤L during the speed change process.

8. The tunnel sterilization and drying method according to claim 7, characterized in that: The step S200 further includes: when ∆v×∆T>0, obtaining a placement parameter B, B=T / v0-T max / v; When B≥0, replace the bottle body and load it in the same bottle placement section; when B<0, replace the bottle body and load it in the bottle replacement placement section and adjust the speed change efficiency of the conveying device so that the speed change time t≥t min And the moving distance l≤L during the speed change process.

9. The tunnel sterilization and drying method according to any one of claims 6 to 8, characterized in that: The drying section includes a preheating section and a high-temperature section, and the control method described in any one of claims 2 to 5 is used for the high-temperature section.

10. The tunnel sterilization and drying method according to claim 9, characterized in that: The temperature control method of the preheating section includes: A100, obtain the transport speed v of the replacement bottle, the preheating temperature T1 that the replacement bottle needs to reach, T1<T max ; A200, obtaining the bottle body temperature T2 when the replacement bottle body leaves the preheating section under the preset preheating conditions; when T2 ≥ T1, the preheating section does not perform temperature adjustment; the preset preheating conditions include the preheating section temperature being equal to the original bottle body preheating temperature, and the transportation speed of the replacement bottle being v; When T2<T1, the preheating section performs temperature rise control; When T2<T1, the preheating section is heated to T3. ; Wherein, T4 is the temperature of the bottle before it enters the preheating section, s is the length of the preheating section, v is the transportation speed for replacing the bottle, and k is the proportional constant.

Images