A heat drying apparatus for CPP cast film production

Abstract

This utility model discloses a hot-drying device for CPP cast film production, relating to the field of cast film technology. The device includes a drying chamber, a hanging rod, a movable cylinder, a connecting plate, limiting plates, and a spring. The hanging rod is fixedly connected to the front and rear sides of the top of both sides of the inner wall of the drying chamber, and the movable cylinder is located inside the hanging rod. This utility model, by setting a spacing adjustment mechanism and a measuring and observation mechanism, enables the spacing adjustment mechanism to flexibly adjust the distance between the limiting plates. Through a driving component, the adjusting block moves along the adjusting slide rod, allowing for rapid adaptation to CPP cast films of different widths. This solves the problem that existing devices lack a spacing adjustment structure, and that in actual production, CPP cast films have various widths, while the existing devices have a fixed spacing between the limiting plates, which cannot adapt to the fixing requirements of films of different widths, thus limiting the applicability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of cast film technology, specifically a hot drying device for CPP cast film production. Background Technology

[0002] Cast film is a type of non-stretched, non-oriented flat extrusion film produced by rapidly cooling a melt. There are two methods: single-layer casting and multi-layer co-extrusion. Compared to blown film, its advantages include faster production speed, higher output, and significantly better film transparency, gloss, and thickness uniformity.

[0003] According to announcement number CN217073299U, a hot drying device for CPP cast film production is disclosed, relating to the field of cast film technology. The device includes a housing with a drying assembly on its surface. The drying assembly includes a hot air blower fixedly connected to the upper surface of the housing. A hanging rod is fixedly installed on the inner wall of the housing. Two air ducts are fixedly installed on the surface of the housing. Two air inlets are opened on the inner wall of the housing and connected to the air ducts. An air outlet is opened on the inner wall of the housing and connected to the air ducts. A rotating plate is rotatably installed on the inner wall of the air outlet. An elastic strip is fixedly installed on the surface of the rotating plate. This invention has a reasonable design structure; the hot air and the elastic strip work together to make the rotating plate move up and down, thereby achieving a better drying effect, improving the drying efficiency of the equipment while reducing energy consumption and increasing practicality.

[0004] Based on the search of the aforementioned patents and the discovery of existing equipment, it is found that when the aforementioned equipment is used, it can solve the problem that the heat loss of the drying equipment is serious during the drying process of existing traditional equipment for drying cast film, resulting in the drying efficiency not reaching the expected level. However, during use, the device lacks a spacing adjustment structure. In actual production, the width of CPP cast film varies, while the existing device has a fixed spacing between the limiting plates, which cannot meet the fixing requirements of films of different widths, thus limiting the applicability of the equipment. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a hot drying device for CPP cast film production, which has the advantage of spacing adjustment function. This solves the problem that the device lacks a spacing adjustment structure, and that in actual production, the width of CPP cast film varies in various specifications, while the spacing of the limiting plates in the existing device is fixed, which cannot meet the fixing requirements of films of different widths and limits the applicability of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat-drying device for CPP cast film production, comprising a drying device, the drying device including a drying chamber, a hanging rod, a movable cylinder, a connecting plate, a limiting plate, and a spring. The hanging rod is fixedly connected to the front and rear sides of the top of both sides of the inner wall of the drying chamber. The movable cylinder is located inside the hanging rod. The connecting plate is movably connected to the inner wall of the movable cylinder. The limiting plate is fixedly connected to both sides of the connecting plate. The spring is disposed inside the movable cylinder, one end of the spring is fixedly connected to the bottom of the inner wall of the movable cylinder, and the other end of the spring is fixedly connected to the bottom of the connecting plate. A spacing adjustment mechanism includes an adjustment block fixedly connected to the bottom of a movable cylinder. An adjustment slide rod is movably connected to the inner wall of the adjustment block. The adjustment slide rod is fixedly connected to the top of both sides of the inner wall of the drying oven. A driving assembly is provided on the surface of the adjustment block, and an auxiliary adjustment assembly is movably embedded in the inner wall of the adjustment block. Measurement and observation mechanism; the measurement and observation mechanism is located on both sides of the hanging rod.

[0007] In a preferred embodiment of this invention, the drive assembly includes a threaded hole formed on the surface of the adjusting block. A bidirectional screw is threadedly connected to the inner wall of the threaded hole. A forward and reverse motor is fixedly installed on the right side of the drying oven, and the output end of the forward and reverse motor is fixedly connected to the right side of the bidirectional screw.

[0008] As a preferred embodiment of this utility model, the auxiliary adjustment component includes auxiliary balls, which are movably embedded in the inner wall of the adjustment block. The number of auxiliary balls is set to four sets. A groove is formed on the surface of the adjustment slide rod, and the surface of the auxiliary balls is slidably connected to the inner wall of the groove.

[0009] As a preferred embodiment of this utility model, the measuring and observation mechanism includes a scale groove, the scale groove is arranged in several groups and is distributed at equal intervals, measuring needles are fixedly connected to both sides of the bottom of the limiting plate, the measuring needles are located outside the scale groove, and observation components are provided on the front and rear sides of both sides of the drying oven.

[0010] As a preferred embodiment of the present invention, the observation component includes a mounting groove, which is formed on the front and rear sides of both sides of the drying oven, and a glass observation plate is fixedly installed on the inner wall of the mounting groove.

[0011] As a preferred embodiment of this invention, a control box is fixedly installed on the rear right side of the drying oven, and the control box is electrically connected to the forward and reverse motors via wires.

[0012] As a preferred embodiment of this utility model, the bottom of the limiting piece is provided with a groove, and a protective pad is fixedly installed on the inner wall of the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a spacing adjustment mechanism and a measurement and observation mechanism, enables the spacing adjustment mechanism to flexibly adjust the distance between the limiting pieces. The driving component drives the adjustment block to move along the adjustment slide bar, which can quickly adapt to CPP cast films of different widths. At the same time, the measurement and observation mechanism allows operators to intuitively grasp the spacing of the limiting pieces. This solves the problem that the device lacks a spacing adjustment structure. In actual production, CPP cast films have various widths, while the existing device has a fixed spacing between the limiting pieces, which cannot adapt to the fixed requirements of films of different widths and limits the applicability of the equipment. This invention achieves the effect of spacing adjustment.

[0014] 2. By setting up a spacing adjustment mechanism, the spacing adjustment mechanism can drive the movable cylinder and the limiting plate to move synchronously along the adjusting slide rod through the cooperation of the driving component and the adjusting block, so as to achieve precise adjustment of the spacing between the limiting plates on both sides. It can adapt to CPP cast film of different widths and expand the application range of the device.

[0015] 3. This utility model allows users to intuitively grasp the spacing of the limiting plates through a measuring and observation mechanism. The adjustment distance can be accurately read through the cooperation of the scale groove and the measuring needle, so that the limiting plates can be adjusted to the precise required spacing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional cross-sectional view of the drying oven. Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustment block; Figure 4 This is a schematic diagram of the three-dimensional structure of the explosion of the limiting piece.

[0017] In the diagram: 1. Drying device; 11. Drying oven; 12. Hanging rod; 13. Movable cylinder; 14. Connecting plate; 15. Limiting plate; 16. Spring; 2. Spacing adjustment mechanism; 21. Adjusting block; 22. Adjusting slide rod; 23. Drive assembly; 231. Threaded hole; 232. Bidirectional screw; 233. Forward and reverse motor; 24. Auxiliary adjustment assembly; 241. Auxiliary ball; 242. Slide groove; 3. Measuring and observation mechanism; 31. Scale groove; 32. Measuring needle; 33. Observation assembly; 331. Mounting groove; 332. Glass observation plate; 4. Control box; 5. Groove; 6. Protective pad. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth. Example

[0022] Reference Figure 1-4 This is the first embodiment of the present invention, providing a heat drying apparatus for CPP cast film production, including a drying device 1. The drying device 1 includes a drying chamber 11, a hanging rod 12, a movable cylinder 13, a connecting plate 14, a limiting plate 15, and a spring 16. The hanging rod 12 is fixedly connected to the front and rear sides of the top of both sides of the inner wall of the drying chamber 11. The movable cylinder 13 is located inside the hanging rod 12. The connecting plate 14 is movably connected to the inner wall of the movable cylinder 13. The limiting plate 15 is fixedly connected to both sides of the connecting plate 14. The spring 16 is disposed inside the movable cylinder 13, with one end fixedly connected to the bottom of the inner wall of the movable cylinder 13 and the other end fixedly connected to the bottom of the connecting plate 14. Spacing adjustment mechanism 2; the spacing adjustment mechanism 2 includes an adjustment block 21, which is fixedly connected to the bottom of the movable cylinder 13. An adjustment slide rod 22 is movably connected to the inner wall of the adjustment block 21. The adjustment slide rod 22 is fixedly connected to the top of both sides of the inner wall of the drying oven 11. A drive assembly 23 is provided on the surface of the adjustment block 21, and an auxiliary adjustment assembly 24 is movably embedded in the inner wall of the adjustment block 21. Measurement and observation mechanism 3; Measurement and observation mechanism 3 is opened on both sides of hanging rod 12. Drive component 23 includes threaded hole 231, which is opened on the surface of adjustment block 21. The inner wall of threaded hole 231 is threaded with bidirectional screw 232. A forward and reverse motor 233 is fixedly installed on the right side of drying oven 11. The output end of forward and reverse motor 233 is fixedly connected to the right side of bidirectional screw 232. Auxiliary adjustment component 24 includes auxiliary ball bearing 241, which is movably embedded in the inner wall of adjustment block 21. The number of auxiliary ball bearing 241 is set to four. The surface of adjustment slide rod 22 is provided with slide groove 242. The surface of auxiliary ball bearing 241 is slidably connected to the inner wall of slide groove 242. A control box 4 is fixedly installed on the rear side of right side of drying oven 11. The control box 4 is electrically connected to forward and reverse motor 233 through wire. The bottom of limit plate 15 is provided with groove 5. The inner wall of groove 5 is fixedly installed with protective pad 6.

[0023] Specifically, the spacing adjustment mechanism 2, through the cooperation of the drive component 23 and the adjustment block 21, can drive the movable cylinder 13 and the limiting piece 15 to move synchronously along the adjustment slide bar 22, so as to achieve precise adjustment of the spacing between the two limiting pieces 15, which can adapt to CPP cast films of different widths and expand the applicability of the device.

[0024] Furthermore, the user can control the forward and reverse motor 233 to rotate in both directions via the control box 4. The output shaft of the forward and reverse motor 233 then drives the bidirectional screw 232 to rotate. The threads on the surface of the bidirectional screw 232 engage with the threaded holes 231 on the inner wall of the adjusting block 21. Since the threads at both ends of the bidirectional screw 232 are in opposite directions, when the screw rotates, the adjusting blocks 21 on both sides will move synchronously inward or outward along the adjusting slide bar 22. During the movement of the adjusting blocks 21, the auxiliary balls 241 roll along the grooves 242 on the surface of the adjusting slide bar 22, converting sliding friction into rolling friction. The friction is greatly reduced, ensuring that the adjusting block 21 moves smoothly and avoiding jamming or deviation. Since the movable cylinder 13 is fixedly connected to the top of the adjusting block 21, the movable cylinder 13 moves synchronously with the adjusting block 21, driving the internal connecting plate 14, limiting plate 15 and spring 16 to move as a whole, realizing the adjustment of the distance between the two limiting plates 15 to adapt to CPP cast films of different widths. Then the cast film is placed on the hanging rod 12, and the groove 5 at the bottom of the limiting plate 15 is aligned with the edge of the film. The protective pad 6 in the groove 5 is made of flexible rubber material to avoid scratching the surface of the film. Example

[0025] In the second embodiment of this utility model, the measuring and observation mechanism 3 includes a scale groove 31. The scale groove 31 is arranged in several groups and is distributed at equal intervals. Measuring needles 32 are fixedly connected to both sides of the bottom of the limiting piece 15. The measuring needles 32 are located outside the scale groove 31. Observation components 33 are provided on the front and rear sides of both sides of the drying oven 11. The observation components 33 include mounting grooves 331. The mounting grooves 331 are opened on the front and rear sides of both sides of the drying oven 11. A glass observation plate 332 is fixedly installed on the inner wall of the mounting groove 331.

[0026] Specifically, the measuring and observation mechanism 3 allows users to intuitively grasp the spacing of the limit piece 15. Through the cooperation of the scale groove 31 and the measuring needle 32, the adjustment distance can be accurately read, thereby enabling the limit piece 15 to be adjusted to the precise required spacing.

[0027] Furthermore, several sets of equally spaced graduated grooves 31 are pre-set on both sides of the hanging rod 12 on the inner wall of the drying oven 11, forming a reference scale for spacing measurement. The values ​​of the graduated grooves 31 correspond to the limiting spacing required for CPP cast films of different widths, providing a quantitative reference for subsequent adjustments. When the drive component 23 moves the adjusting block 21, the movable cylinder 13 moves synchronously with the adjusting block 21, thereby moving the connecting plate 14, the limiting plate 15, and the measuring needle 32 at the bottom together. Since the measuring needle 32 is fixed at the bottom of the limiting plate 15 and located outside the graduated groove 31, its displacement trajectory is consistent with that of the limiting plate 15, corresponding to the changes in the value of the graduated groove 31 in real time. Glass observation plates 332 are fixedly installed in the mounting grooves 331 on the front and rear sides of the drying oven 11. The observation plate 332 is made of high-temperature resistant transparent material, which not only isolates the heat loss inside the drying oven 11, but also provides the operator with a window to observe the inside of the drying oven 11, so that the relative position of the scale groove 31 and the measuring needle 32 is within the visible range. The user can observe the value of the scale groove 31 pointed to by the measuring needle 32 through the glass observation plate 332 and intuitively judge whether the current spacing of the limit plate 15 meets the width requirements of the target film. If the spacing is insufficient or too large, the drive component 23 can be adjusted through the control box 4 until the measuring needle 32 points to the preset scale to complete the precise adjustment.

[0028] Users according to the CPP to be dried The width of the cast film is adjusted by sending a start signal to the forward and reverse motors 233 via the control box 4 on the right side of the drying oven 11. After the forward and reverse motors 233 start, their output drives the bidirectional screw 232 to rotate. Since the bidirectional screw 232 is threadedly connected to the threaded hole 231 on the surface of the adjusting block 21, and the threads at both ends of the bidirectional screw 232 are in opposite directions, the rotating bidirectional screw 232 will drive the two adjusting blocks 21 to move synchronously inward or outward along the adjusting slide bar 22. During the movement of the adjusting block 21, the four sets of auxiliary balls 241 embedded in its inner wall roll along the sliding groove 242 on the surface of the adjusting slide bar 22, converting the sliding friction between the adjusting block 21 and the slide bar into rolling friction, greatly reducing the moving resistance, ensuring that the adjusting block 21 moves smoothly in a straight line, and avoiding jamming or deviation. The adjusting block 21 is fixedly connected to the bottom of the movable cylinder 13. Therefore, the movement of the adjusting block 21 will drive the movable cylinder 13, the connecting plate 14, and the limiting plate 15 to move synchronously as a whole, ultimately achieving precise adjustment of the distance between the two limiting plates 15 to adapt to the current situation. The width specification of the film achieves the effect of spacing adjustment. Several sets of equidistant scale grooves 31 on both sides of the hanging rod 12 form a reference scale, the values ​​of which correspond to the standard limit spacing of different film widths. The measuring needle 32 at the bottom of the limit plate 15 moves synchronously with the limit plate 15 and is always located outside the scale groove 31, indicating the current spacing value in real time. The operator can directly observe the pointing position of the measuring needle 32 on the scale groove 31 through the glass observation plate 332 in the mounting groove 331 on both sides of the drying oven 11. The spacing adjustment progress can be grasped without opening the drying oven 11. When the measuring needle 32 points to the target scale, the forward and reverse motors 233 are turned off by the control box 4 to complete the spacing adjustment. Then, the CPP cast film is placed on the hanging rod 12, and the connecting plate 14 is pulled by the force of the spring 16 to move the limit plate 15 downward, so that the limit plate 15 and the protective pad 6 can limit the CPP cast film. At the same time, the protective pad 6 can buffer the contact pressure and prevent the film surface from being damaged.

[0029] In summary, by setting up the spacing adjustment mechanism 2 and the measuring and observation mechanism 3, the spacing adjustment mechanism 2 can flexibly adjust the distance between the limiting pieces 15. The driving component 23 drives the adjusting block 21 to move along the adjusting slide bar 22, which can quickly adapt to CPP cast films of different widths. At the same time, the measuring and observation mechanism 3 allows operators to intuitively grasp the spacing of the limiting pieces 15. This solves the problem that the device lacks a spacing adjustment structure. In actual production, CPP cast films have various widths, but the existing device has a fixed spacing between the limiting pieces, which cannot adapt to the fixed requirements of films of different widths and limits the applicability of the equipment. This achieves the effect of spacing adjustment.

[0030] The forward and reverse motors, bidirectional screws, and control boxes used in this application can be additionally equipped with protective measures that are common knowledge in this technical field under different usage environments. These measures include, but are not limited to, the following: protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing.

[0031] It should be noted that (the forward and reverse motor, the bidirectional screw, and the control box) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters, are all common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0032] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0033] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0034] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heat oven drying device for CPP cast film production, characterized by: The device includes a drying apparatus (1), which comprises a drying chamber (11), a hanging rod (12), a movable cylinder (13), a connecting plate (14), a limiting plate (15), and a spring (16). The hanging rod (12) is fixedly connected to the front and rear sides of the top of both sides of the inner wall of the drying chamber (11). The movable cylinder (13) is located inside the hanging rod (12). The connecting plate (14) is movably connected to the inner wall of the movable cylinder (13). The limiting plate (15) is fixedly connected to both sides of the connecting plate (14). The spring (16) is disposed inside the movable cylinder (13). One end of the spring (16) is fixedly connected to the bottom of the inner wall of the movable cylinder (13), and the other end of the spring (16) is fixedly connected to the bottom of the connecting plate (14). Spacing adjustment mechanism (2); The spacing adjustment mechanism (2) includes an adjustment block (21), which is fixedly connected to the bottom of the movable cylinder (13). An adjustment slide rod (22) is movably connected to the inner wall of the adjustment block (21). The adjustment slide rod (22) is fixedly connected to the top of both sides of the inner wall of the drying oven (11). A drive assembly (23) is provided on the surface of the adjustment block (21). An auxiliary adjustment assembly (24) is movably embedded in the inner wall of the adjustment block (21). Measurement and observation mechanism (3); the measurement and observation mechanism (3) is located on both sides of the hanging rod (12).

2. A heat oven drying device for CPP cast film production according to claim 1 characterized in that: The drive assembly (23) includes a threaded hole (231) which is opened on the surface of the adjusting block (21). A bidirectional screw (232) is threadedly connected to the inner wall of the threaded hole (231). A forward and reverse motor (233) is fixedly installed on the right side of the drying oven (11). The output end of the forward and reverse motor (233) is fixedly connected to the right side of the bidirectional screw (232).

3. A heat oven drying device for CPP cast film production as claimed in claim 1, wherein: The auxiliary adjustment component (24) includes auxiliary balls (241), which are movably embedded in the inner wall of the adjustment block (21). The number of auxiliary balls (241) is set to four sets. The surface of the adjustment slide rod (22) is provided with a slide groove (242), and the surface of the auxiliary balls (241) is slidably connected to the inner wall of the slide groove (242).

4. A heat oven drying device for CPP cast film production as claimed in claim 1, wherein: The measuring and observation mechanism (3) includes a scale groove (31), the scale groove (31) is arranged in several groups and is distributed at equal distances, the bottom of the limiting piece (15) is fixedly connected to both sides of the measuring needle (32), the measuring needle (32) is located outside the scale groove (31), and the front and rear sides of both sides of the drying oven (11) are provided with observation components (33).

5. A heat oven drying device for CPP cast film production according to claim 4, characterized in that: The observation component (33) includes a mounting groove (331), which is located on the front and rear sides of the drying oven (11). A glass observation plate (332) is fixedly installed on the inner wall of the mounting groove (331).

6. A heat oven drying device for CPP cast film production as claimed in claim 2, wherein: A control box (4) is fixedly installed on the rear right side of the drying oven (11). The control box (4) is electrically connected to the forward and reverse motor (233) via wires.

7. A heat oven drying device for CPP cast film production as claimed in claim 1 wherein: The bottom of the limiting sheet (15) is provided with a groove (5), and the inner wall of the groove (5) is fixedly provided with a protective pad (6).

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