oven

Abstract

The present invention discloses an oven, comprising a box body, a film rolling mechanism and an air-drying mechanism. The box body is provided with a drying chamber, the film rolling mechanism is arranged in the drying chamber, the film rolling mechanism includes a first roller assembly and a second roller assembly arranged at intervals along the up and down directions, the first roller assembly includes a plurality of first rollers arranged at intervals side by side, the second roller assembly includes a plurality of second rollers arranged at intervals side by side, and the first rollers and the second rollers are arranged in a staggered manner in sequence, the air-drying mechanism includes a shell body, a hot air blower, a first air duct assembly and a second air duct assembly, the shell body is provided with an accommodating chamber, the hot air blower is arranged in the accommodating chamber, the first air duct assembly includes a plurality of first air ducts arranged at intervals side by side, the first air duct is located between adjacent first rollers, the second air duct assembly includes a plurality of second air ducts arranged at intervals side by side, and the second air duct is located above the first roller, which can not only reduce the number of air-drying mechanisms, but also ensure that the film is evenly dried.

Description

Technical Field

[0001] The present invention relates to the technical field of film drying equipment, in particular to a drying oven. Background Art

[0002] If film is not cleaned after blowing, it can easily generate static electricity in a dry environment. This can lead to dust accumulation during packaging, making it difficult to use. Therefore, cleaning and drying the film after production is essential to ensure a clean and hygienic finish. Currently, existing film drying equipment typically incorporates air-drying mechanisms on the upper and lower sides of the drying oven to improve drying efficiency. These two air-drying mechanisms dry both surfaces of the film, ensuring uniform drying. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an oven that can dry both surfaces of a film while reducing the number of air-drying mechanisms.

[0004] An oven according to an embodiment of the present invention includes:

[0005] The box body is provided with a drying chamber, wherein the drying chamber has a film inlet and a film outlet;

[0006] A film winding mechanism is provided in the drying chamber, the film winding mechanism includes a first roller assembly and a second roller assembly spaced apart in the up-down direction, along the direction from the film inlet to the film outlet, the first roller assembly includes a plurality of first rollers spaced apart in parallel, the second roller assembly includes a plurality of second rollers spaced apart in parallel, the first rollers and the second rollers are arranged in a staggered manner, and the film to be dried can be wound around the first rollers and the second rollers in sequence;

[0007] The air drying mechanism includes a housing, a hot air blower, a first air duct assembly, and a second air duct assembly, wherein the housing is provided with a receiving cavity, the hot air blower is disposed in the receiving cavity, the first air duct assembly and the second air duct assembly are both disposed on a side of the housing facing the first roller assembly, and the first air duct assembly and the second air duct assembly are both in communication with the receiving cavity;

[0008] In which, the first air duct assembly includes a plurality of first air ducts arranged side by side and spaced apart, the first air duct has a first air outlet on the side away from the shell, and the first air duct is located between adjacent first rollers, and the second air duct assembly includes a plurality of second air ducts arranged side by side and spaced apart, the second air duct is located above the first roller, and the second air duct has a second air outlet on the side away from the first roller.

[0009] The oven according to the embodiment of the present invention has at least the following beneficial effects:

[0010] When the oven is working, the film passes through the first roller and the second roller in sequence, and the hot air generated by the hot air blower is blown out from the first air outlet and the second air outlet respectively. Since the first air outlet duct is located between adjacent first rollers, the hot air blown out of the first air outlet can dry the lower surface of the film. Since the second air outlet duct is located above the corresponding first roller and the second air outlet is located on the side of the second air outlet duct away from the first roller, the hot air blown out of the second air outlet can dry the lower surface of the film. A single air-drying mechanism can dry both surfaces of the film at the same time, which can not only reduce the number of air-drying mechanisms, but also ensure that the film is dried evenly, thereby ensuring the quality of the film.

[0011] According to some embodiments of the present invention, the second air duct assembly further includes a connecting pipe, the connecting pipe including a first connecting section and a second connecting section, one end of at least two of the second air ducts is connected to the first connecting section, and the first connecting section is connected to the shell through the second connecting section.

[0012] According to some embodiments of the present invention, the first air duct assembly further includes a plurality of first air balancing covers, each of the first air balancing covers corresponding to the first air duct, the first air balancing covers being provided with a first air balancing hole, the first air balancing hole being connected to the first air outlet, and the width of the first air balancing hole gradually decreasing from the first air outlet to the first air balancing hole; and / or,

[0013] The second air duct assembly also includes multiple second air balancing covers, which correspond one-to-one to the second air ducts. The second air balancing covers are provided with second air balancing holes, which are connected to the second air outlet. The width of the second air balancing holes gradually decreases from the second air outlet to the second air balancing holes.

[0014] According to some embodiments of the present invention, the minimum distance between the second air duct and the first roller is smaller than the maximum outer diameter of the first roller.

[0015] According to some embodiments of the present invention, the minimum spacing between adjacent first rollers is less than or equal to the maximum outer diameter of the second roller.

[0016] According to some embodiments of the present invention, the device further includes a film-threading mechanism, which is used to guide the film to be wound around the first roller and the second roller when threading the film.

[0017] According to some embodiments of the present invention, the film-penetrating mechanism includes a first drive component, multiple first sprockets, multiple second sprockets and a chain, the first sprockets correspond one-to-one to the first roller, the first sprockets are connected to one end of the corresponding first roller, the second sprockets correspond one-to-one to the second roller, the second sprockets are connected to one end of the corresponding second roller, the chain is wound around the first sprocket and the second sprocket, the first drive component is used to drive the chain to rotate, and the chain can be connected to the film.

[0018] According to some embodiments of the present invention, the membrane penetration mechanism also includes a plurality of third sprockets, the third sprockets are arranged on the outer peripheral side of the box body, the first sprocket, the second sprocket and the third sprocket are located in the same plane, and the plurality of third sprockets are arranged at intervals around the circumference of the box body, and the chain is wound around the plurality of third sprockets.

[0019] According to some embodiments of the present invention, it also includes a first transmission mechanism and a second transmission mechanism for transmitting the film, the first transmission mechanism and the second transmission mechanism are both arranged in the box body, the first transmission mechanism is located on the side of the film inlet away from the film outlet, and the second transmission mechanism is located on the side of the film outlet away from the film inlet.

[0020] According to some embodiments of the present invention, the first transmission mechanism includes a first bracket, a fourth drive assembly, and a plurality of first tension rollers, the first bracket being disposed on the box, the plurality of first tension rollers being disposed on the first bracket and spaced side by side, the fourth drive assembly being used to drive one of the first tension rollers to rotate, and the film being capable of being wound around the plurality of first tension rollers; and / or,

[0021] The second transmission mechanism includes a second bracket, a fifth drive assembly and multiple second tension rollers. The second bracket is arranged on the box body. Multiple second tension rollers are all arranged on the second bracket and are arranged side by side. The fifth drive assembly is used to drive one of the second tension rollers to rotate, and the film can be wound around multiple second tension rollers.

[0022] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0024] Figure 1 Schematic diagram of the structure of an oven according to an embodiment of the present invention;

[0025] Figure 2 A front view of an oven according to an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the internal structure of an oven according to an embodiment of the present invention;

[0027] Figure 4 A front view of an air-drying mechanism according to an embodiment of the present invention;

[0028] Figure 5 This is a structural diagram of an air-drying mechanism according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the first air outlet duct according to an embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the internal structure of the second air outlet duct according to an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of a detection mechanism according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] Box body 100, drying chamber 110, film inlet 120, film outlet 130;

[0034] A first roller assembly 210, a first roller 211, a second roller assembly 220, and a second roller 221;

[0035] Air-drying mechanism 300, housing 310, accommodating chamber 311, first air duct assembly 320, first air duct 321, first air inlet 3211, first air outlet 3212, second air duct assembly 330, second air duct 331, second air inlet 3311, second air outlet 3312, connecting pipe 332, first connecting section 3321, second connecting section 3322, first air balancing cover 340, first air balancing hole 341, second air balancing cover 350, second air balancing hole 351;

[0036] First drive assembly 410, third sprocket 420;

[0037] First door body 510, first avoidance opening 511, second door body 520;

[0038] A first adjusting member 610 and a second adjusting member 620;

[0039] Light source probe 711, receiving probe 721;

[0040] A first bracket 810, a first tension roller 820, a second bracket 830, a second tension roller 840, a fourth driving assembly 850, and a fifth driving assembly 860;

[0041] Film 900. DETAILED DESCRIPTION

[0042] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0044] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0046] In related art, if film is not cleaned after film blowing, static electricity is easily generated in a dry environment. This can easily cause dust to adhere to the film during packaging, making it difficult to use. Therefore, it is necessary to clean and dry the film after production to ensure a clean and hygienic film. Currently, to improve film drying efficiency, existing film drying equipment generally installs air drying mechanisms on the upper and lower sides of the oven. These two air drying mechanisms dry the two surfaces of the film separately to ensure uniform drying of the film.

[0047] Reference Figures 1 to 3According to an embodiment of the present invention, the oven includes a box body 100, a film rolling mechanism and an air drying mechanism 300. The box body 100 is provided with a drying chamber 110. The drying chamber 110 has a film inlet 120 and a film outlet 130. The film rolling mechanism is arranged in the drying chamber 110. The film rolling mechanism includes a first roller assembly 210 and a second roller assembly 220 spaced apart in the vertical direction. In the direction from the film inlet 120 to the film outlet 130, the first roller assembly 210 includes a plurality of first rollers spaced apart in parallel. The roller 211, the second roller assembly 220 includes a plurality of second rollers 221 arranged side by side, the first roller 211 and the second roller 221 are arranged in a staggered manner, and the film 900 to be dried can be wound around the first roller 211 and the second roller 221 in sequence. The air drying mechanism 300 includes a housing 310, a hot air blower, a first air duct assembly 320 and a second air duct assembly 330. The housing 310 is provided with a receiving chamber 311, the hot air blower is arranged in the receiving chamber 311, the first air duct assembly 320 is provided with a second air duct assembly 330, and the first air duct assembly 330 is provided with a receiving chamber 311. The component 320 and the second air duct component 330 are both arranged on the side of the shell 310 facing the first roller assembly 210, and the first air duct component 320 and the second air duct component 330 are both connected to the accommodating cavity 311, wherein the first air duct component 320 includes a plurality of first air ducts 321 arranged side by side and spaced apart, and the first air duct 321 has a first air inlet 3211 and a first air outlet 3212 on the side away from the shell 310, and the first air duct 321 is located between adjacent first rollers 211, and the second air duct component 330 includes a plurality of second air ducts 331 arranged side by side and spaced apart, and the second air duct 331 has a second air inlet 3311 and a second air outlet 3312 on the side away from the first roller 211, and the second air duct 331 is located above the first roller 211, so that a single air-drying mechanism 300 can dry both surfaces of the film 900 at the same time, which can not only reduce the number of air-drying mechanisms 300, but also ensure that the film 900 is dried evenly, thereby ensuring the quality of the film 900.

[0048] Specifically, when the oven is working, the film 900 is sequentially passed through the first roller 211 and the second roller 221, and the hot air generated by the hot air blower is blown out from the first air outlet 3212 and the second air outlet 3312 respectively. Since the first air outlet pipe is located between adjacent first rollers 211, the hot air blown out of the first air outlet 3212 can dry the lower surface of the film 900. Since the second air outlet pipe 331 is located above the corresponding first roller 211, and the second air outlet 3312 is located on the side of the second air outlet 331 away from the first roller 211, the hot air blown out of the second air outlet 3312 can dry the lower surface of the film 900. A single air-drying mechanism 300 can dry both surfaces of the film 900 at the same time, which can not only reduce the number of air-drying mechanisms 300, but also ensure that the film 900 is dried evenly, thereby ensuring the quality of the film 900.

[0049] Reference Figure 4 、 Figure 5 In some embodiments of the present invention, the second air duct assembly 330 also includes a connecting pipe 332, the connecting pipe 332 includes a first connecting section 3321 and a second connecting section 3322, one end of at least two second air ducts 331 is connected to the first connecting section 3321, and the first connecting section 3321 is connected to the shell 310 through the second connecting section 3322, which can simplify the pipeline layout of the drying mechanism 300 to reduce the temperature difference between the hot air blown out of the first air outlet and the hot air blown out of the second air outlet, thereby ensuring that the film 900 is dried evenly.

[0050] Specifically, the length direction of the first connecting section 3321 extends along the direction from the film inlet 120 to the film outlet 130, the length direction of the second connecting section 3322 extends along the up and down direction, and the length direction of the second air duct 331 extends along the axial direction of the first roller 211. The hot air in the shell 310 flows to the first connecting section 3321 through the second connecting section 3322, and then the hot air in the second connecting section 3322 is diverted to the corresponding second air duct 331, which can simplify the pipeline layout of the drying mechanism 300 to reduce the temperature difference between the hot air blown out of the first air outlet and the hot air blown out of the second air outlet, thereby ensuring that the film 900 is dried evenly.

[0051] It should be noted that there are two connecting pipes 332, which are arranged opposite to each other along the axial direction of the first roller shaft 211. Among the two connecting pipes 332, one end of at least two first air outlet pipes is connected to one of the first connecting sections 3321, and the other end of at least two first air outlet pipes is connected to the other first connecting section 3321, which can improve the connection reliability of the first air outlet pipes and will not be described in detail here.

[0052] Reference Figure 4 、 Figure 5 In some embodiments of the present invention, the first air duct assembly 320 further includes a plurality of first air balancing covers 340, the first air balancing covers 340 corresponding one-to-one to the first air duct 321, the first air balancing covers 340 being provided with first air balancing holes 341, the first air balancing holes 341 being connected to the first air outlet, and the width of the first air balancing holes 341 gradually decreasing along the direction from the first air outlet 3212 to the first air balancing holes 341, so that the hot air blown out of the first air outlet 3212 is more uniform, thereby ensuring that the film 900 is dried evenly.

[0053] Specifically, when the hot air in the shell 310 is blown out from the first air outlet 3212, the hot air flows into the drying chamber 110 through the first air balancing hole 341. Since the width of the first air balancing hole 341 gradually decreases along the direction from the first air outlet 3212 to the first air balancing hole 341, the hot air can be dispersed to various axial positions of the first roller 211. The hot air blown out from the first air outlet 3212 is more uniform, which can ensure that the film 900 is dried evenly.

[0054] Similarly, in some embodiments of the present invention, the second air duct assembly 330 also includes a plurality of second air balancing covers 350, and the second air balancing covers 350 correspond one-to-one to the second air duct 331. The second air balancing covers 350 are provided with second air balancing holes 351, and the second air balancing holes 351 are connected to the second air outlet. Along the direction from the second air outlet 3312 to the second air balancing holes 351, the width of the second air balancing holes 351 gradually decreases, so that the hot air blown out of the second air outlet 3312 is more uniform, which can ensure that the film 900 is dried evenly.

[0055] Specifically, when the hot air in the shell 310 is blown out from the second air outlet 3312, the hot air flows into the drying chamber 110 through the second air balancing hole 351. Since the width of the second air balancing hole 351 gradually decreases along the direction from the second air outlet 3312 to the second air balancing hole 351, the hot air can be dispersed to various axial positions of the second roller 221. The hot air blown out from the second air outlet 3312 is more uniform, which can ensure that the film 900 is dried evenly.

[0056] It is understandable that in the actual production process of film 900, due to processing errors, the thickness of films 900 in different production batches is uneven. The existing oven cannot take corresponding drying measures according to the different thicknesses of films 900, and it is difficult to ensure the product quality of film 900.

[0057] Reference Figures 4 to 7 In some embodiments of the present invention, the oven further includes a control module, a first adjusting mechanism, a second adjusting structure and a detection mechanism. The first adjusting mechanism is used to adjust the air volume of the first air outlet, the second adjusting mechanism is used to adjust the air volume of the second air outlet, and the detection mechanism is used to detect the thickness of the film 900. The control module can control the first adjusting mechanism and the second adjusting mechanism to change the air volume of the first air outlet and the air volume of the second air outlet respectively according to the actual thickness of the film 900 measured by the detection mechanism. The greater the actual thickness of the film 900, the greater the air volume of the first air outlet and the second air outlet, which can avoid the film 900 from being over-drying, thereby ensuring the product quality of the film 900.

[0058] It should be noted that, referring to Figure 6 The first adjustment structure includes a first hysteresis damper and a first adjustment member 610. The first adjustment member 610 is rotatably disposed in the first air outlet pipe 321, and the first adjustment member 610 is located between the first air inlet 3211 and the first air outlet 3212. The first adjustment member 610 can rotate under the action of wind force. The first hysteresis damper is disposed between the first adjustment member 610 and the first air outlet pipe 321. The first hysteresis damper is used to change the resistance encountered by the first adjustment member 610 to adjust the rotation speed of the first adjustment member 610, thereby controlling the air outlet volume of the first air outlet 3212.

[0059] Similarly, refer to Figure 7 The second adjustment structure includes a second hysteresis damper and a second adjustment member 620. The second adjustment member 620 is rotatably arranged in the second air outlet pipe 331, and the second adjustment member 620 is located between the second air inlet 3311 and the second air outlet 3312. The second adjustment member 620 can rotate under the action of wind force. The second hysteresis damper is arranged between the second adjustment member 620 and the second air outlet pipe 331. The second hysteresis damper is used to change the resistance encountered by the second adjustment member 620 to adjust the rotation speed of the second adjustment member 620, thereby controlling the air outlet volume of the second air outlet 3312.

[0060] Reference Figure 3 、 Figure 8 It should be noted that the detection mechanism includes an optical signal transmitting component and an optical signal receiving component. The optical signal transmitting component includes a plurality of light source probes 711 arranged side by side and spaced apart along the axial direction of the first roller 211. The optical signal receiving component includes a plurality of receiving probes 721 arranged side by side and spaced apart along the axial direction of the first roller 211. Each light source probe 711 and the corresponding receiving probe 721 are arranged opposite to each other along the thickness direction of the film 900 to be tested, so that the light generated by each light source probe 711 can be received by the corresponding receiving probe 721 after passing through the film 900 along the thickness direction of the film 900, and the receiving probe 721 is electrically connected to the control module. In this way, by performing transmittance tests at specific wavelengths at multiple positions of the film 900, the thickness of the film 900 can be detected. The transmittance test data is output through the control module and fed back to the first hysteresis damper and the second hysteresis damper to adjust the rotation speed of the first adjusting member 610 and the rotation speed of the second adjusting member 620.

[0061] For example, when the transmittance is less than the preset value, the thickness of the film 900 of this batch is relatively thick, and the control module controls the first hysteresis damper and the second hysteresis damper to operate so that the rotation speed of the first adjustment member 610 and the rotation speed of the second adjustment member 620 are accelerated, which can increase the air output of the first air balancing hole 341 and the second air balancing hole 351 per unit time. When the transmittance is greater than the preset value, the thickness of the film 900 of this batch is relatively thin, and the control module controls the first hysteresis damper and the second hysteresis damper to operate so that the rotation speed of the first adjustment member 610 and the rotation speed of the second adjustment member 620 are slowed down, which can reduce the air output of the first air balancing hole 341 and the second air balancing hole 351 per unit time, and can adapt to films 900 of different thicknesses, thereby ensuring that the film 900 is dried evenly and the product quality of the film 900 can be guaranteed.

[0062] Reference Figure 3In some embodiments of the present invention, the minimum distance between the second air duct 331 and the first roller 211 is less than the maximum outer diameter of the first roller 211, which can reduce the distance between the first roller 211 and the second air duct 331 to reduce the length of the portion of the film 900 located between the first roller 211 and the second air duct 331, and can increase the contact area between the hot air blown out of the second air outlet and the film 900, thereby improving the drying efficiency of the oven.

[0063] It should be noted that if the minimum distance between the second air duct 331 and the first roller 211 is greater than the maximum outer diameter of the first roller 211, the minimum distance between the second air duct 331 and the first roller 211 is too large, resulting in the contact area between the hot air blown out of the second air outlet and the film 900 being too small, and the film 900 cannot be dried quickly.

[0064] Reference Figure 3 In some embodiments of the present invention, a film threading mechanism is also included. The film threading mechanism is used to guide the film 900 to be wound around the first roller 211 and the second roller 221 when threading the film 900. There is no need to manually thread the film 900, which can reduce the labor intensity of the staff.

[0065] In some embodiments of the present invention, the film-threading mechanism includes a first drive component 410, multiple first sprockets, multiple second sprockets and a chain. The first sprocket corresponds one-to-one to the first roller 211, and the first sprocket is connected to one end of the corresponding first roller 211. The second sprocket corresponds one-to-one to the second roller 221, and the second sprocket is connected to one end of the corresponding second roller 221. The chain is wound around the first sprocket and the second sprocket. The first drive component 410 is used to drive the chain to rotate. The chain can be connected to the film 900, and there is no need to manually thread the film 900, which can reduce the labor intensity of the staff.

[0066] Specifically, when threading the film, the first drive component 410 drives the first sprocket, the second sprocket and the chain transmission, and the film 900 is fixedly connected to the chain by knotting. When the chain moves around the first sprocket and the second sprocket, the film 900 is threaded around the first roller 211 and the second roller 221 as the chain moves. The film 900 can be threaded automatically without manual threading of the film 900, which can reduce the labor intensity of the staff.

[0067] It should be noted that the film threading mechanism can also be a structure in which a first pulley, a second pulley, a belt and a first drive component 410 cooperate. The first pulley is arranged at one end of the first roller 211, and the second pulley is arranged at one end of the second roller 221. The belt is wound around the first pulley and the second pulley. The first drive component 410 is used to drive the first pulley and the second pulley to move the belt as a whole. The film 900 is connected to the belt, and automatic threading of the film 900 can also be achieved. There is no limitation here.

[0068] It should be noted that the first drive assembly 410 is a structure in which a motor and a reduction gearbox cooperate, which will not be described in detail here.

[0069] In some embodiments of the present invention, the film threading mechanism also includes multiple third sprockets 420, which are arranged on the outer peripheral side of the box body 100, and the first sprocket, the second sprocket and the third sprocket 420 are located in the same plane, and the multiple third sprockets 420 are arranged at intervals around the circumference of the box body 100. The chain is wound around the multiple third sprockets 420, so that part of the chain can be located on the outside of the box body 100. The staff can fix the film 900 on the chain on the outside of the box body 100 without entering the interior of the box body 100, which can not only reduce the labor intensity of the staff, but also facilitate the threading of the film 900.

[0070] Reference Figure 1 、 Figure 3 In some embodiments of the present invention, a first door body 510 and a second door body 520 are further included. The first door body 510 and the second door body 520 can be movably arranged on the box body 100. The first door body 510 is used to open or close the film inlet 120, and the second door body 520 is used to open or close the film outlet 130, which can reduce the heat loss in the drying chamber 110 to improve the drying efficiency of the oven.

[0071] Specifically, the first door body 510 is hinged to the box body 100 to open or close the film inlet 120, and the second door body 520 is hinged to the box body 100 to open or close the film outlet 130. When the oven is working, the first door body 510 closes the film inlet 120 and the second door body 520 closes the film outlet 130, which can reduce the occurrence of hot air in the drying chamber 110 flowing out to the outside through the film inlet 120 or the film outlet 130, and can reduce the heat loss in the drying chamber 110 to improve the drying efficiency of the oven.

[0072] It should be noted that the first door body 510 can also be slidably provided on the box body 100, so as to facilitate opening or closing the film inlet 120, and the second door body 520 can also be slidably provided on the box body 100, so as to open or close the film outlet 130, and there is no limitation here.

[0073] Reference Figure 1 、 Figure 3In some embodiments of the present invention, the first door body 510 is provided with a first avoidance opening 511, and the second door body 520 is provided with a second avoidance opening. The first avoidance opening 511 is communicated with the film inlet 120 and is located at one end of the film inlet 120 along the length direction of the first roller 211. The second avoidance opening is communicated with the film outlet 130 and is located at one end of the film outlet 130 along the length direction of the first roller 211. The chain is passed through the first avoidance opening 511 and the second avoidance opening, which can avoid interference between the chain and the first door body 510 or the second door body 520, so as to facilitate the passing of the chain.

[0074] In some embodiments of the present invention, the minimum spacing between adjacent first rollers 211 is less than or equal to the maximum outer diameter of the second roller 221, which can increase the length of the film 900 in the drying chamber 110, thereby increasing the drying time of the film 900 in the drying chamber 110, thereby ensuring that the film 900 is dried evenly.

[0075] Reference Figure 1 、 Figure 3 In some embodiments of the present invention, the oven further includes a first conveying mechanism and a second conveying mechanism. The first conveying mechanism is arranged on a side of the film inlet 120 away from the film outlet 130. The first conveying mechanism is used to guide the film 900 from the film inlet 120 into the drying chamber 110. The second conveying mechanism is arranged on a side of the film outlet 130 away from the film inlet 120. The second conveying mechanism is used to guide the film 900 to flow out of the film outlet 130 from the drying chamber 110, so that the film 900 can automatically move in the direction from the film inlet 120 to the film outlet 130.

[0076] For example, the first transmission mechanism includes a first bracket 810, a fourth drive assembly 850 and multiple first tension rollers 820. The first bracket 810 is connected to the box body 100. The multiple first tension rollers 820 are rotatably provided on the first bracket 810. The fourth drive assembly 850 is used to drive the first tension rollers 820 to rotate, and the multiple first tension rollers 820 are arranged side by side and spaced apart in the direction from the film inlet 120 to the film outlet 130. Among the three adjacent first tension rollers 820, the part of the middle first tension roller 820 is located between the other two first tension rollers 820. The film 900 is wound around the multiple first tension rollers 820, so that the film 900 is in a taut state, which can facilitate guiding the film 900 from the film inlet 120 into the drying chamber 110.

[0077] Similarly, the second transmission mechanism includes a second bracket 830, a fifth drive assembly 860 and multiple second tension rollers 840. The second bracket 830 is connected to the box body 100. The multiple second tension rollers 840 are rotatably provided on the second bracket 830. The fifth drive assembly 860 is used to drive the second tension roller 840 to rotate, and the multiple second tension rollers 840 are arranged side by side and spaced apart in the direction from the film inlet 120 to the film outlet 130. Among the three adjacent second tension rollers 840, the part of the middle second tension roller 840 is located between the other two second tension rollers 840. The film 900 is wound around the multiple second tension rollers 840, so that the film 900 is in a taut state, which can facilitate guiding the film 900 from the film inlet 120 into the drying chamber 110.

[0078] Reference Figure 3 In some embodiments of the present invention, there is also provided a method for detecting film defects, comprising the following steps:

[0079] Step 1: Using a first linear array CCD camera and a second linear array CCD camera, respectively, an upper surface image and a lower surface image of the film are acquired, corresponding feature point pairs are obtained in the upper surface image and the lower surface image, and thickness uneven areas in the upper surface image and the lower surface image are identified based on the corresponding feature point pairs;

[0080] Step 2: Perform surface flatness detection on the area with uneven thickness to obtain a first flatness detection result;

[0081] Step 3: Perform surface flatness detection on the upper surface image to obtain a second flatness detection result;

[0082] Step 4: Perform surface flatness detection on the lower surface image to obtain a third flatness detection result;

[0083] Step 5: Generate a film thickness detection result based on the first flatness detection result, the second flatness detection result, and the third flatness detection result.

[0084] Step 6: Determine the thickness uneven area based on the film thickness detection result, and send the thickness uneven area to the detection mechanism, so that the detection mechanism performs thickness detection at the position on the film corresponding to the thickness uneven area.

[0085] In some embodiments of the present invention, in step 1, a moving speed ratio is calculated based on the real-time moving speed of the film and the preset reference moving speed;

[0086] Determine the quality grade according to the model and specifications of the film;

[0087] Obtaining the air volume of the first air outlet and the air volume of the second air outlet;

[0088] The real-time acquisition speeds of the first linear array CCD camera and the second linear array CCD camera are adjusted according to the moving speed ratio, the quality level, the air volume of the first air outlet, and the air volume of the second air outlet.

[0089] In some embodiments of the present invention, in step 1, obtaining corresponding feature point pairs in the upper surface image and the lower surface image includes:

[0090] Performing feature extraction on the upper surface image to obtain a first key feature point;

[0091] Performing feature extraction on the lower surface image to obtain second key feature points;

[0092] Feature matching is performed on the first key feature point and the second key feature point to obtain corresponding feature point pairs.

[0093] In some embodiments of the present invention, identifying the uneven thickness region in the upper surface image and the lower surface image according to the corresponding feature point pairs includes:

[0094] Calculate the displacement vector between the corresponding feature point pairs;

[0095] Determine whether there is displacement between the upper surface image and the lower surface image according to the displacement vector;

[0096] When it is determined that there is displacement, the region corresponding to the displacement vector in the upper surface image and the lower surface image is identified as a thickness uneven region.

[0097] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The embodiment is described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiment. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the present invention.

Claims

1. An oven for drying a film (900), characterized in that: include: The box body (100) is provided with a drying chamber (110), wherein the drying chamber (110) has a film inlet (120) and a film outlet (130); A film rolling mechanism is provided in the drying chamber (110), the film rolling mechanism comprising a first roller assembly (210) and a second roller assembly (220) spaced apart in the up-down direction, along the direction from the film inlet (120) to the film outlet (130), the first roller assembly (210) comprises a plurality of first rollers (211) spaced apart in parallel, the second roller assembly (220) comprises a plurality of second rollers (221) spaced apart in parallel, the first rollers (211) and the second rollers (221) are arranged in a staggered manner, and the film (900) to be dried can be wound around the first rollers (211) and the second rollers (221) in sequence; The air drying mechanism (300) comprises a housing (310), a hot air blower, a first air duct assembly (320), and a second air duct assembly (330); the housing (310) is provided with a receiving cavity (311); the hot air blower is arranged in the receiving cavity (311); the first air duct assembly (320) and the second air duct assembly (330) are both arranged on a side of the housing (310) facing the first roller assembly (210); Wherein, the first air duct assembly (320) comprises a plurality of first air ducts (321) arranged side by side and spaced apart, the first air duct (321) having a first air inlet (3211) and a first air outlet (3212) on a side away from the housing (310), and the first air duct (321) is located between adjacent first roller shafts (211); the second air duct assembly (330) comprises a plurality of second air ducts (331) arranged side by side and spaced apart, the second air duct (331) is located above the first roller shaft (211), the second air duct (331) having a second air inlet (3311) and a second air outlet (3312) on a side away from the first roller shaft (211), and the first air inlet (3211) and the second air inlet (3311) are both in communication with the accommodating cavity (311); It also includes a control module, a first regulating mechanism, a second regulating mechanism, and a detection mechanism, wherein the first regulating mechanism is used to regulate the air volume of the first air outlet, the second regulating mechanism is used to regulate the air volume of the second air outlet, and the detection mechanism is used to detect the thickness of the film (900), and the control module can control the first regulating mechanism and the second regulating mechanism to respectively change the air volume of the first air outlet (3212) and the air volume of the second air outlet (3312) according to the actual thickness of the film (900) measured by the detection mechanism; The first regulating structure comprises a first hysteresis damper and a first regulating member (610); the first regulating member (610) is rotatably disposed in the first air outlet pipe (321), and the first regulating member (610) is located between the first air inlet (3211) and the first air outlet (3212); the first regulating member (610) is rotatable under the action of wind force; the first hysteresis damper is disposed between the first regulating member (610) and the first air outlet pipe (321); the first hysteresis damper is used to change the resistance experienced by the first regulating member (610) so as to regulate the rotation speed of the first regulating member (610); The second adjustment structure comprises a second hysteresis damper and a second adjustment member (620); the second adjustment member (620) is rotatably arranged in the second air outlet pipe (331), and the second adjustment member (620) is located between the second air inlet (3311) and the second air outlet (3312); the second adjustment member (620) is rotatable under the action of wind force; the second hysteresis damper is arranged between the second adjustment member (620) and the second air outlet pipe (331); the second hysteresis damper is used to change the resistance experienced by the second adjustment member (620) so as to adjust the rotation speed of the second adjustment member (620); The detection mechanism includes an optical signal emitting component and an optical signal receiving component, wherein the optical signal emitting component includes a plurality of light source probes (711) arranged side by side and spaced apart along the axial direction of the first roller (211), and the optical signal receiving component includes a plurality of receiving probes (721) arranged side by side and spaced apart along the axial direction of the first roller (211), and each of the light source probes (711) and the corresponding receiving probe (721) are arranged relative to each other along the thickness direction of the film (900) to be tested, so that the light generated by each of the light source probes (711) can be received by the corresponding receiving probe (721) after passing through the film (900) along the thickness direction of the film (900), and the receiving probe (721) is electrically connected to the control module.

2. The oven according to claim 1, characterized in that The second air duct assembly (330) further includes a connecting pipe (332), the connecting pipe (332) including a first connecting section (3321) and a second connecting section (3322), one end of at least two of the second air ducts (331) being connected to the first connecting section (3321), and the first connecting section (3321) being connected to the housing (310) via the second connecting section (3322).

3. The oven according to claim 1, characterized in that The first air duct assembly (320) further comprises a plurality of first air balancing covers (340), wherein the first air balancing covers (340) correspond one to one with the first air duct (321), the first air balancing covers (340) are provided with first air balancing holes (341), the first air balancing holes (341) are communicated with the first air outlet, and the width of the first air balancing holes (341) gradually decreases in the direction from the first air outlet (3212) to the first air balancing holes (341); and / or, The second air duct assembly (330) further includes a plurality of second air balancing covers (350), each of the second air balancing covers (350) corresponding to the second air duct (331) one by one, and each of the second air balancing covers (350) is provided with a second air balancing hole (351), and the second air balancing hole (351) is connected to the second air outlet, and the width of the second air balancing hole (351) gradually decreases from the second air outlet (3312) to the second air balancing hole (351).

4. The oven according to claim 1, characterized in that The minimum distance between the second air duct (331) and the first roller (211) is smaller than the maximum outer diameter of the first roller (211).

5. The oven according to claim 1, characterized in that The minimum distance between adjacent first rollers (211) is less than or equal to the maximum outer diameter of the second roller (221).

6. The oven according to claim 1, characterized in that It also includes a film-threading mechanism, which is used to guide the film (900) to be wound around the first roller (211) and the second roller (221) when threading the film (900).

7. The oven according to claim 6, characterized in that The film-penetrating mechanism includes a first drive component (410), a plurality of first sprockets, a plurality of second sprockets and a chain, wherein the first sprockets correspond one-to-one to the first roller (211), the first sprockets are connected to one end of the corresponding first roller (211), the second sprockets correspond one-to-one to the second roller (221), the second sprockets are connected to one end of the corresponding second roller (221), the chain is wound around the first sprocket and the second sprocket, the first drive component (410) is used to drive the chain to rotate, and the chain can be connected to the film (900).

8. The oven according to claim 7, characterized in that The membrane penetration mechanism also includes a plurality of third sprockets (420), the third sprockets (420) are arranged on the outer peripheral side of the box body (100), the first sprocket, the second sprocket and the third sprocket (420) are located in the same plane, and the plurality of third sprockets (420) are arranged at intervals around the circumference of the box body (100), and the chain is wound around the plurality of third sprockets (420).

9. The oven according to claim 1, characterized in that It also includes a first transmission mechanism and a second transmission mechanism for transmitting the film (900), the first transmission mechanism and the second transmission mechanism are both arranged on the box body (100), the first transmission mechanism is located on the side of the film inlet (120) away from the film outlet (130), and the second transmission mechanism is located on the side of the film outlet (130) away from the film inlet (120).

10. The oven according to claim 9, characterized in that The first transmission mechanism comprises a first bracket (810), a fourth driving assembly (850) and a plurality of first tension rollers (820), wherein the first bracket (810) is provided on the box body (100), the plurality of first tension rollers (820) are all provided on the first bracket (810) and are arranged side by side and spaced apart, the fourth driving assembly (850) is used to drive one of the first tension rollers (820) to rotate, and the film (900) can be wound around the plurality of first tension rollers (820); and / or, The second transmission mechanism includes a second bracket (830), a fifth driving assembly (860) and a plurality of second tension rollers (840), wherein the second bracket (830) is arranged on the box body (100), and the plurality of second tension rollers (840) are all arranged on the second bracket (830) and are arranged side by side at intervals, and the fifth driving assembly (860) is used to drive one of the second tension rollers (840) to rotate, and the film (900) can be wound around the plurality of second tension rollers (840).

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