A transportation device for a bottle body, its control method, and a tunnel-type sterilization and drying method

Abstract

The present invention relates to the field of transportation devices. To solve the problem that existing transportation devices cannot adaptively adjust the speed according to the drying speed of different bottles, a transportation device for bottles, its control method, and a tunnel sterilization and drying method are provided, including: a conveying device, a collection device, a scanning device, and a hot air device. The conveying device includes: a feeding section, a collection section, and a working section connected in sequence; the collection section is provided with a collection device; the feeding section and the collection section are also provided with scanning devices; the working section is provided with a hot air device; the collection 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 collection device and the scanning device, the controller regulates the transportation speed of the conveying device. By collecting the relevant data of the bottles in the collection section and then comparing and analyzing the data of the bottles with the data of the previous batch of bottles, the present invention can, through the speed adjustment of the conveying device, ensure the drying effect of the newly replaced bottles while increasing the conveying speed.

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 bottles are filled with products, they often need to undergo cleaning and drying operations. However, in industrial production processes, most products of the same type have multiple specifications. When drying, sterilizing, and filling the contents of bottles of 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 that 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 reduce 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 drying speed of 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 of 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 loading section and the conveying device.

[0006] The embodiments of the present invention are realized by the following technical solutions:

[0007] A transportation device for bottles includes: a conveying device, a collection device, a scanning device, and a hot air device. The conveying device includes: a loading section, a collection section, and a working section connected in sequence; the collection section is provided with a collection device for collecting the morphological information of the bottles; the loading section and the collection 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 collection 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 collection 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 body data and the replaced bottle body 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 body and the replaced bottle body; m = bottleneck diameter / bottleneck height; n = belly diameter / belly height;

[0010] Obtain the transportation speed v0 of the original bottle body;

[0011] Analyze based on the original bottle body data, the replaced bottle body data, and v0 to obtain the transportation speed v of the replaced bottle body.

[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 body and the replaced bottle body are the same, v'0 = v0.

[0014] Preferably, it includes:

[0015] 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;

[0016] 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;

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

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

[0019] Preferably, when the materials of the original bottle body and the replaced bottle body are different, obtain the drying temperature T0 of the original bottle body;

[0020] Obtain the maximum applicable temperature T of the replaced bottle body max , and obtain the bottle body applicable temperature ratio i, i = T max / T0;

[0021] 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 = iv0, 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] Obtain the maximum applicable temperature T of the replaced bottle body through the described control method max and the transportation speed v;

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

[0025] The regulation method when changing the bottle includes:

[0026] Obtaining the minimum time t required for the temperature in the drying section to change from the drying temperature T0 of the original bottle to the maximum applicable temperature T of the replaced bottle max when changing the bottle. 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 conveying speed v0 of the original bottle to the conveying speed v of the replaced bottle.

[0028] Preferably, it includes:

[0029] S100. Obtaining the speed difference Δv and the temperature difference ΔT, Δv = v - v0, ΔT = T max - T0; v is the conveying speed of the replaced bottle, v0 is the conveying speed of the original bottle, T max is the maximum applicable temperature of the replaced bottle, and T0 is the drying temperature of the original bottle;

[0030] S200. When Δv > 0 and ΔT < 0, the replaced bottle is loaded onto the same-bottle placement section;

[0031] When Δv < 0 and ΔT > 0, the replaced bottle is loaded onto the bottle-changing 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 Δv × ΔT > 0, the replaced bottle is loaded onto the bottle-changing 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.

[0033] Preferably, S200 further includes: when Δv × ΔT > 0, obtaining the placement parameter B, B = T / v0 - T max / v;

[0034] When B ≥ 0, the replaced bottle is loaded onto the same-bottle placement section; when B < 0, the replaced bottle is loaded onto the bottle-changing 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 minAnd the moving distance l during the speed change process satisfies l ≤ 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 for the preheating section includes:

[0037] A100. Obtain the transportation speed v of the replaced bottle body, and the preheating temperature T1 that the replaced bottle body needs to reach, where T1 < T max ;

[0038] A200. Obtain the bottle body temperature T2 when the replaced bottle body leaves the preheating section under the preset preheating conditions; when T2 ≥ T1, 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 T2 < T1, the preheating section performs temperature increase regulation;

[0040] When T2 < T1, the preheating section is heated to T3, ; where T4 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 the present invention divides the conveying device into a loading section, a collection section, and a working section, relevant data of the bottle body is collected through the collection section, and 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, so that the newly replaced bottle body can improve the conveying speed while ensuring the drying effect; the present invention adjusts the transportation speed of the bottle body through the bottle body data, and then adjusts the residence time of the bottle body in the drying section, and 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 the present invention divides the loading section into a bottle replacement placement section and a same-bottle placement section, the drying and sterilization efficiency can be improved by selecting the placement section under different working conditions while ensuring the drying and sterilization effect of the bottle body. 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 for 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, other related drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 It is a schematic structural diagram of the transportation device for the bottle body;

[0045] Figure 2 It is a top view during the transportation of the bottle body;

[0046] Figure 3 It is a drying schematic diagram when the bottle body is not replaced;

[0047] Figure 4 It is a drying schematic diagram when the bottle body is replaced;

[0048] Reference numerals in the drawings: 1 - conveying device, 11 - feeding section, 111 - bottle replacement placement section, 112 - same - bottle placement section, 12 - acquisition section, 13 - working section, 2 - pre - heating section, 3 - drying section, 4 - acquisition device, 5 - scanning device, 6 - hot - air device. Detailed implementation manners

[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 described clearly and completely. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention.

[0050] Embodiment 1: As Figure 1 shown, a transportation device for a bottle body includes: a conveying device 1, an acquisition device 4, a scanning device 5 and a hot - air device 6. The conveying device 1 includes: a feeding section 11, an acquisition section 12 and a working section 13 connected in sequence; the acquisition section 12 is provided with an acquisition device 4, and the acquisition device 4 is used for acquiring the morphological information of the bottle body; the feeding section 11 and the acquisition section 12 are also provided with the scanning device 5, and the scanning device 5 is used for scanning the identification code on the bottle body. The identification code is used for identifying the material and / or material information of the bottle body, and 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 acquisition 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 acquisition device 4 and the scanning device 5, the controller adjusts the transportation speed of the conveying device 1.

[0051] During the specific implementation process, the controller can adopt a single - chip microcomputer or a PLC control cabinet, the acquisition 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 feeding section 11 by a manipulator or manually. Of course, the feeding section 11 can also be directly connected to the pre - processing area through a transportation device, and the bottle body can be transported from the pre - processing area to the feeding section 11. When feeding, 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 acquisition section 12, the morphological information of the bottle body is collected by the acquisition device 4. According to the morphological information and material information of 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, comprising:

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

[0055] Obtain the transportation speed v0 of the original bottle body;

[0056] Obtain the transportation speed v of the replaced bottle body, 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 body and the replaced bottle body are the same, v'0 = v0.

[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 wall of the bottleneck of most bottle bodies is vertical, and the first inflection point that appears during the downward extension of the outer wall can be used as the separation point between the bottleneck and the belly.

[0058] The bottle body data can be realized by existing image acquisition technologies. Demonstratively, 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, 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 - spaced points are set in the height direction of the belly, and after obtaining the diameters at each equally - spaced point position, the sum is taken and the average value is obtained. The closer the distance between the equally - spaced points and the more the equally - spaced 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 shape of the original bottle body is similar to that of the replacement bottle body; being similar in shape means having the same shape but different sizes. The similarity ratio k can be obtained through comparative analysis of the images of the original bottle body and the replacement bottle body. 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, and thus a, b, and c may change according to different application scenarios and can be measured by oneself.

[0061] Drying is a process that consumes a large amount of energy. 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 the temperature is preferentially regulated during the drying process, it may lead to a poor final sterilization effect. In addition, the change in temperature is also limited by the material of the bottle body, such as the melting point of the material and the thermal stress of the material during temperature change. Therefore, in the drying control of this embodiment, the transportation 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 transportation 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 v0 and the original drying temperature. When the bottle body needs to be replaced, first obtain the bottle body data, calculate k, m, and n, then obtain the transportation speed v0 of the original bottle body, and then obtain the transportation speed of the replacement bottle body through v = akv'0 + bmv'0 + cnv'0, and then conduct 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, the drying effect of the bottle body is detected by an infrared moisture detector or a drying method, and the sterilization effect of the bottle body is detected by 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 replacement bottle body only differ in size, the transportation speed corresponding to different bottle body data can be obtained by adjusting the transportation speed and detecting the drying and sterilization effect.

[0066] Example 3: To increase the applicability of the control method, improvements were made based on Example 2. In this example, the control method further includes:

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

[0068] Obtain the bottle body thermal conductivity ratio p, where 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;

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

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

[0071] In the specific implementation process, it can be obtained from the historical data of multiple tests. When drying the bottle body, the hot air not only directly enters the bottle body but also transfers heat from outside the bottle body to inside the bottle body through the bottle wall. Therefore, this example additionally considers the thermal resistance ratio of the bottle body. When the material and thickness of the replacement bottle body are the same as those of the original bottle body, the control method provided in Example 1 can be directly adopted. When the material of the replacement bottle body is the same as that of the original bottle body but the thickness is different, the control method provided in this example can be adopted.

[0072] Example 4: To further improve the applicability of the control method, improvements were made based on Example 3. In this example, when the material of the original bottle body is different from that of the replacement bottle body, obtain the drying temperature T0 of the original bottle body;

[0073] Obtain the maximum applicable temperature T of the replacement bottle body max , and obtain the bottle body applicable temperature ratio i, where i = T max / T0;

[0074] Obtain the transportation speed v of the replacement bottle body when the drying temperature is T max , where v = akv'0 + bmv'0 + cnv'0, and v'0 = iv0, 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 material of the bottle body is changed, 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 thus the transportation speed can be reduced to a certain extent. As can be seen from the above, when the bottle body materials are different, it is necessary to adjust the temperature whether to ensure production efficiency or ensure the safety of the bottle body. 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] Obtaining the maximum applicable temperature T of the replaced bottle body through the described control method max and the transportation speed v;

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

[0079] The adjustment method when replacing the bottle body includes:

[0080] Obtaining the minimum time t required when the temperature of the drying section 3 changes from the drying temperature T0 of the original bottle body to the maximum applicable temperature T of the replaced bottle body max of the replaced bottle body min ;

[0081] Adjusting 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 same-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 v0 of the original bottle body to the transportation speed v of the replaced bottle body.

[0082] In the specific implementation process, the moving distance l refers to the conveying distance of the bottle body 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-type sterilization and drying is an efficient continuous processing method, which is widely used in industries such as pharmaceuticals and food processing for sterilizing and drying containers or packaging materials such as bottles and cans. 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 body can be as Figure 2 shown, using a relatively narrow conveyor belt, with one bottle per row, or it can also be asFigure 3 As shown, a conveyor belt with a certain width is adopted, and multiple bottles are placed in a row to improve production efficiency. The picking and placing of the bottles can be done manually or through robotic arms, robotic claws, negative pressure suction cups, etc. For the device that picks and places the bottles, such as a robotic claw, its moving range on the horizontal plane can span from the bottle replacement placement section 111 to the same-bottle placement section 112. Multiple robotic claws can be integrated on a moving base to pick multiple bottles at one time.

[0084] Exemplarily, the variable speed efficiency can be determined by v, v0, t, and L according to 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 min , the feeding position of the bottle replacement placement section 111 on the bottle 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 robotic claw picking the bottles at one time, so as to regulate the placement position.

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

[0086] Embodiment 6: To further improve the drying and sterilization efficiency, an improvement is 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 - v0, ∆T = T max - T0; v is the transportation speed of the replaced bottle, v0 is the transportation speed of the original bottle, T max is the highest applicable temperature of the replaced bottle, and T0 is the drying temperature of the original bottle;

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

[0089] When ∆v < 0 and ∆T > 0, feed the replaced bottle on the bottle replacement placement section 111 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.

[0090] In the specific implementation process, although all follow when replacing the bottle body Figure 4 As shown, feeding on the bottle replacement and placement section 111 can ensure the drying and sterilization effect of the bottle body. However, if all feeding is done on the bottle replacement and 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 for replacing the bottle body, even if the replacement bottle body is fed adjacent to the original bottle body as Figure 3 shown, a good drying and sterilization effect can be achieved, that is, there is no need to wait for the speed regulation of the conveying device to be completed and the temperature regulation of the drying section 3 to be completed, thereby improving the drying and sterilization efficiency. When the heat energy required for drying and sterilizing a single original bottle body is lower than that for replacing the bottle body, then feed as Figure 4 shown. The method provided in this example 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 and 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 and 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, and ∆v < 0 and ∆T < 0, there are at least two ways to select the placement section. For details, 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 and 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, and ∆v < 0 and ∆T < 0, the replacement bottle body is directly fed on the bottle replacement and placement section 111.

[0095] Embodiment 7: To further improve the drying and sterilization efficiency, an improvement is made on the basis of Embodiment 6. In this embodiment, the S200 further includes: when ∆v × ∆T > 0, the placement parameter B is obtained, B = T / v0 - 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 and 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 ≥ tmin And the moving distance l during the speed change process satisfies l ≤ 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, but to a certain extent sacrificing the drying and sterilization efficiency. 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 of the bottle surface and its interior, 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 lower temperature suddenly enters a high-temperature drying environment, a short-term condensation phenomenon may occur on the bottle surface, 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 T1 that the replaced bottle body needs to reach, where T1 < T max ;

[0103] A200. Obtain the bottle temperature T2 when the replacement bottle leaves the preheating section 2 under the preset preheating conditions; when T2 ≥ T1, the temperature of the preheating section 2 is not adjusted; the preset preheating conditions include that the temperature of the preheating section 2 is equal to the original bottle preheating temperature, and the transportation speed of the replacement bottle is v;

[0104] When T2 < T1, the preheating section 2 performs a temperature increase control.

[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, so 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 when entering the high-temperature section, the temperature of the preheated bottle should not be too different from the temperature of the high-temperature section. However, in this embodiment, the adjustment of the transportation speed is involved when replacing the bottle. Therefore, the control of the preheating section 2 is necessary. If the transportation speed of the bottle in the preheating section 2 is adjusted, it will cause a significant increase in the complexity of production control. Each round of bottles entering the drying section 3 will correspond to a speed adjustment of the transportation device. Under the superposition of control deviations, the deviation of the drying and sterilization effect of the bottle will also become larger and larger during continuous production, thereby increasing the frequency of shutdown and maintenance. Therefore, in this embodiment, the preheating temperature of the preheating section 2 is preferentially adjusted. When the temperature of the preheating section 2 is difficult to make the replacement bottle reach the optimal preheating temperature, the temperature of the preheating section 2 can be increased. T1 is equivalent to the preheating temperature threshold, and the temperature of the preheated bottle needs to reach at least T1. The size of T1 can be determined according to the actual situation, and the factors that can be referred to can include the material of the bottle 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 water can be completed in the preheating section 2. Furthermore, the size of T1 can also consider the drying degree of the bottle. T1 can be equal to 0.8 T max ~0.9 T max 。

[0106] Embodiment 10: This embodiment provides a method for controlling the temperature increase of the preheating section 2. When T2 < T1, the preheating section 2 is heated to T3, ; where T4 is the temperature of the bottle before entering the preheating section 2, s is the length of the preheating section 2, v is the transportation speed of the replacement bottle, 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 leaving the preheating section 2 may not reach the hot air temperature of the preheating section 2. Therefore, this embodiment divides T2 and T3. T4 can be selected as the current ambient temperature, and the ambient temperature can be collected by a temperature sensor. When T1, T4, s, and v are all known quantities, the value of T3 can be obtained. When loading in the replacement placement section, it can also be ensured that the temperature control of the preheating section 2 is completed before the bottle 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 may have various modifications and changes. Any modifications, equivalent replacements, improvements, 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 tunnel-type sterilization and drying method, characterized in that, Adopt a transportation device for the bottle body, and the transportation device for the bottle body includes: A conveying device (1), and the conveying device (1) includes: a feeding section (11), a collection section (12), and a working section (13) that are 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; Scanning device (5), the feeding section (11) or the acquisition 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, and the material information includes the maximum applicable temperature T max ; A hot air device (6), the working section (13) is provided with the 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 the controller receives and analyzes the information of the collection device (4) and the scanning device (5), it regulates the transportation speed of the conveying device (1); The drying method includes: Obtain the transportation speed v0 of the original bottle body; Analyze according to the original bottle body data, the replaced bottle body data, and v0 to obtain the transportation speed v of the replaced bottle body; The working section to which the drying method is applied includes a bottle replacement placement section, a same-bottle placement section, and a drying section that are connected in sequence; When the bottle body being fed is different from the bottle body in the drying section, the bottle body is fed in the bottle replacement placement section or the same-bottle placement section; The regulation method when replacing the bottle body includes: Obtain the temperature in the drying section, which varies from the drying temperature T0 of the original bottle body to the highest applicable temperature T of the replaced bottle body max The minimum time t required min ; 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 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 v0 of the original bottle body to the transportation speed v of the replaced bottle body.

2. The tunnel sterilization and drying method according to claim 1, wherein Including: When the bottle body being fed is the same as the bottle body in the drying section, the bottle body is fed in the same-bottle placement section.

3. The tunnel sterilization and drying method according to claim 1, wherein The control method of the transportation device includes: Obtain the original bottle body data and the replaced bottle body data through the collection device, and 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; 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 body and the replaced bottle body are the same, v'0 = v0.

4. The tunnel sterilization and drying method according to claim 3, wherein, The control method includes: 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; 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; Obtain the bottle body thermal resistance ratio A, A = f / p; Obtain the first correction coefficient a, , which is a correction constant.

5. The tunnel sterilization and drying method according to claim 4, characterized in that, When the materials of the original bottle body and the replaced bottle body are different, obtain the drying temperature T0 of the original bottle body; Obtain the maximum applicable temperature T for replacing the bottle body max , and obtain the bottle body applicable temperature ratio i, i = T max / T0; Obtain the drying temperature as T max When the drying temperature is T, change the transportation speed v of the bottle body, where v = akv'0 + bmv'0 + cnv'0, v'0 = iv0, a is the first correction coefficient, b is the second correction coefficient, and c is the third correction coefficient.

6. The tunnel sterilization and drying method according to any one of claims 1-5, characterized in that, Including: S100. Obtain the speed difference ∆v and temperature difference ∆T, where ∆v = v - v0 and ∆T = T max - T0; v is the transportation speed of the replaced bottle body, v0 is the transportation speed of the original bottle body, and T max is the maximum applicable temperature of the replaced bottle body, and T0 is the drying temperature of the original bottle body; S200. When ∆v > 0 and ∆T < 0, the replaced bottle body is fed in the same-bottle placement section (112); When ∆v < 0 and ∆T > 0, replace the bottle body, load it on the bottle replacement placement section (111), and 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; When ∆v × ∆T > 0, replace the bottle body to load 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 satisfies t ≥ t min and the moving distance l during the variable speed process satisfies l ≤ L.

7. The tunnel sterilization and drying method according to claim 6, characterized in that, The S200 further includes: when ∆v×∆T>0, obtaining a placement parameter B, where B = T / v0 - T max / v; 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.

8. The tunnel sterilization and drying method according to claim 1, wherein, The drying section includes a preheating section and a high-temperature section, and the control method is used for the high-temperature section.

9. The tunnel sterilization and drying method according to claim 8, characterized in that, The temperature regulation method of the preheating section includes: A100. Obtain the transportation speed v of the replacement bottle body and the preheating temperature T1 that the replacement bottle body needs to reach, where T1 < T max ; A200. Obtain the bottle body temperature T2 when the replaced 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 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; When T2 < T1, the preheating section performs temperature increase regulation; When T2 < T1, the preheating section is heated up to T3, wherein, T4 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 replacing the bottle body, and k is a proportionality constant.

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