Cooling equipment for biaxially oriented film
By setting up a wiper mechanism in the cooling equipment, the cooling water on the sponge roller is automatically scraped off, which solves the problem of the film carrying cooling water, improves the cooling efficiency and equipment life, and ensures the stability and efficiency of film production.
Patent Information
- Application Number
- CN202422456085.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The bidirectional stretched film carries cooling water when it leaves the cooling pool, resulting in a decrease in the water level of the cooling pool and requires frequent water replenishment, which affects production efficiency and equipment life.
A cooling device including a wiper mechanism is designed, and the cooling water on the sponge roller and wiper mechanism are used to cooperate with gears, connecting rods, gas push rods and other components to automatically scrape the cooling water on the sponge roller to ensure that the film surface is dry and prevent water from flowing back to the film.
It improves cooling efficiency, reduces cooling water consumption, extends the service life of the equipment, and ensures the quality and efficiency of film production.
Smart Images
Figure CN223161359U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooling, in particular to a cooling device for biaxially oriented films. Background Technique
[0002] Biaxially oriented polypropylene film (BOPP) is generally a multi-layer co-extruded film. It is made by co-extruding polypropylene particles into a sheet and then stretching it in both the longitudinal and transverse directions. Due to molecular orientation during stretching, this film has good physical stability, mechanical strength, and airtightness, high transparency and gloss, and is tough and wear-resistant. It is a widely used printing film, generally with a thickness of 20 - 40 μm, and the most widely used is 20 μm. The main disadvantage of biaxially oriented polypropylene film is its poor heat-sealing property, so it is generally used as the outer layer film of composite films. For example, after being compounded with polyethylene film, its moisture-proof property, transparency, strength, stiffness, and printability are all ideal, and it is suitable for packaging dry foods. Since the surface of biaxially oriented polypropylene film is non-polar, has a high degree of crystallinity, and low surface free energy, its printing performance is poor, and its adhesion to inks and adhesives is poor. Surface treatment is required before printing and compounding.
[0003] Existing cooling devices for biaxially oriented films generally send the extruded film into a cooling water tank through a conveying roller and then into subsequent steps through the conveying roller. However, when leaving the cooling tank, it will carry a certain amount of cooling water, reducing the cooling water in the cooling tank and causing the need to frequently replenish water in the cooling tank to ensure the stability of the water level in the cooling tank. Content of the Utility Model
[0004] Based on this, the purpose of the utility model is to provide a cooling device for biaxially oriented films to solve the technical problem that when leaving the cooling tank, it will carry a certain amount of cooling water, reducing the cooling water in the cooling tank.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A cooling device for biaxially oriented films, including a cooling tank, on the top of the cooling tank, there are fixedly connected mounting blocks. There are two mounting blocks, and a sponge roller is rotatably connected between the two mounting blocks. A water scraping mechanism is arranged on the mounting block, and the water scraping mechanism includes a first sliding scraping blade and a second sliding scraping blade.
[0006] By adopting the above technical solution, the cooling tank enables the film to be effectively cooled. The setting of the mounting blocks and the sponge roller further reduces the cooling water carried on the surface of the film, improves the cooling efficiency, and reduces the consumption of cooling water.
[0007] Further, both ends of the first sliding scraping blade and the second sliding scraping blade are fixedly connected with racks, and a gear is meshed between the racks.
[0008] By adopting the above technical solution, the gear is rotatably connected to the mounting block, providing a stable rotation point. The meshing of the rack and the gear realizes the synchronous movement of the first sliding wiper and the second sliding wiper, ensuring the uniformity and consistency of the wiper operation.
[0009] Further, one side of the gear is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to a support rod.
[0010] By adopting the above technical solution, the connecting rod serves as a transmission element, converting the swinging motion of the support rod into the rotational motion of the gear, realizing the effective transmission and conversion of power.
[0011] Further, the bottom of the support rod is rotatably connected to a mounting table, and one side of the top of the mounting table is fixedly connected to a pneumatic push rod, and the movable end of the pneumatic push rod is fixedly connected to a top block.
[0012] By adopting the above technical solution, the mounting table provides a stable mounting foundation for the pneumatic push rod and the support rod, ensuring the stability and reliability of the entire wiper mechanism.
[0013] Further, a fixed rod is fixedly connected to one side of the support rod, and the fixed rod abuts against the top block.
[0014] By adopting the above technical solution, the fixed connection of the fixed rod and the support rod increases the overall stability and strength of the wiper mechanism, ensuring the smooth progress of the wiper operation.
[0015] Further, the first sliding wiper and the second sliding wiper are slidably connected through a spring sleeve rod and a mounting block.
[0016] By adopting the above technical solution, the spring sleeve rod provides stable sliding support for the first sliding wiper and the second sliding wiper, ensuring that they can move smoothly during the wiper process.
[0017] Further, two sets of wiper mechanisms are provided, and the two sets of wiper mechanisms are arranged in a mirror image. One side of the top of the second sliding wiper is fixedly connected to a guiding piece.
[0018] By adopting the above technical solution, the mirror image arrangement of the two sets of wiper mechanisms ensures that both sides of the sliding wiper can be evenly stressed, improving the stress stability of the sliding wiper.
[0019] Further, a conveying roller is rotatably connected to the cooling pool, and a plurality of conveying rollers are provided. An extrusion mechanism is arranged on the top of one of the conveying rollers.
[0020] By adopting the above technical solution, the arrangement of the conveying rollers enables the film to pass through the cooling tank smoothly, ensuring sufficient contact between the film and the cooling water, improving the cooling effect. The arrangement of multiple conveying rollers further guarantees the stability and flatness of the film during the conveying process, preventing the film from wrinkling or deforming due to uneven stress.
[0021] To sum up, the present utility model mainly has the following beneficial effects:
[0022] 1. By setting up a water scraping mechanism in the present utility model, after a specified time, the air push rod can be automatically activated to perform the water scraping operation, timely cleaning the water on the sponge roller and maintaining its good water absorption effect. The first sliding blade and the second sliding blade in the water scraping mechanism enable the scraped water to flow out smoothly, preventing the water from flowing back onto the film, ensuring the production quality and efficiency of the film. After the air push rod resets, the spring sleeve rod can push the blade to automatically reset, avoiding long-term water scraping on the sponge roller, thereby prolonging the service life of the equipment;
[0023] 2. By setting up guiding pieces in the present utility model, when the second sliding blade performs the water scraping operation on the sponge roller, the scraped water can flow along the guiding pieces to both sides of the second sliding blade, effectively preventing the scraped water from flowing back onto the film, ensuring the production quality and efficiency of the film. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0025] Figure 2 is of the present utility model Figure 1 is an enlarged structural schematic diagram of part A in the present utility model;
[0026] Figure 3 is a partially cut-away enlarged structural schematic diagram of the present utility model;
[0027] Figure 4 is a three-dimensional structural schematic diagram of the water scraping mechanism of the present utility model.
[0028] In the figure: 1, cooling tank; 2, mounting block; 3, sponge roller; 4, water scraping mechanism; 401, first sliding blade; 402, second sliding blade; 403, rack; 404, gear; 405, connecting rod; 406, support rod; 407, mounting table; 408, air push rod; 409, fixed rod; 410, top block; 411, spring sleeve rod; 412, guiding piece; 5, conveying roller; 6, extrusion mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.
[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.
[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection: it can be a mechanical connection or an electrical connection: it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0032] Next, according to the overall structure of the present utility model, its embodiments will be described. Embodiment 1:
[0033] A cooling device for a biaxially stretched film, as Figures 1 - 4 shown, includes a cooling pool 1. A mounting block 2 is fixedly connected to the top of the cooling pool 1. There are two mounting blocks 2. A sponge roller 3 is rotatably connected between the two mounting blocks 2. A water scraping mechanism 4 is arranged on the mounting block 2. The water scraping mechanism 4 includes a first sliding scraper 401 and a second sliding scraper 402. The first sliding scraper 401 and the second sliding scraper 402 in the water scraping mechanism 4 can perform a water scraping operation on the sponge roller 3 when needed, further ensuring the water absorption effect of the sponge roller 3 and preventing the scraped water from flowing back to the film, thereby improving the production quality and efficiency of the film.
[0034] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4Both ends of the first sliding scraper 401 and the second sliding scraper 402 are fixedly connected with racks 403, and gears 404 are engaged between the racks 403. This mechanical transmission method has the advantages of simple structure and high transmission efficiency. It can effectively transmit the power of the air push rod 408 to the scraper, thereby achieving effective wiping of the sponge roller 3 and further improving the reliability and service life of the equipment.
[0035] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 One side of the gear 404 is rotatably connected to a connecting rod 405, and one end of the connecting rod 405 is rotatably connected to a support rod 406. The support rod 406 makes the overall structure of the wiper mechanism 4 more compact, easy to install and maintain, provides a stable support point for the wiping operation, and ensures the stability and reliability of the wiping effect.
[0036] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The bottom of the support rod 406 is rotatably connected to the mounting platform 407, and the top side of the mounting platform 407 is fixedly connected to the air push rod 408. The movable end of the air push rod 408 is fixedly connected to the top block 410. The air push rod 408 serves as a power source, and pushes the fixed rod 409 through the top block 410 at its movable end, thereby driving the support rod 406 and the connecting rod 405 to move, thereby pushing the first sliding scraper 401 and the second sliding scraper 402, and then pressing the sponge roller to realize the wiping operation.
[0037] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 One side of the support rod 406 is fixedly connected to a fixing rod 409, and the fixing rod 409 and the top block 410 are in conflict with each other. The conflict between the fixing rod 409 and the top block 410 enables the air push rod 408 to effectively drive the support rod 406 to rotate through the fixing rod 409 when pushing the top block 410, thereby driving the wiper blade to perform the wiping operation.
[0038] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The first sliding scraper 401 and the second sliding scraper 402 are slidably connected to the mounting block 2 through a spring sleeve rod 411. The elastic action of the spring sleeve rod 411 enables the scraper to automatically reset after completing the wiping operation, without the need for an additional reset mechanism, thereby simplifying the structure of the device.
[0039] See Figure 1 and Figure 4There are two groups of wiper mechanisms 4, and the two groups of wiper mechanisms 4 are mirror-imaged. A guide piece 412 is fixedly connected to one side of the top of the second sliding blade 402. The guide piece 412 fixedly connected to the top side of the second sliding blade 402 effectively guides the scraped water to flow to both sides, preventing the water flow from flowing directly back onto the film due to lack of obstruction, thereby further ensuring the production quality and efficiency of the film. Example 2:
[0040] See Figure 1 A conveying roller 5 is rotatably connected to the cooling pool 1. There are multiple conveying rollers 5, and an extrusion mechanism 6 is provided on the top of one of the conveying rollers 5. The setting of the extrusion mechanism 6 enables the film to be continuously fed into the cooling pool 1 during the production process, realizing the automation and continuity of the production process and improving production efficiency.
[0041] The implementation principle of the present invention is as follows: first, when the film passes through the sponge roller 3, the liquid droplets on the surface of the film are absorbed by the sponge roller 3. After a specified time, when the sponge roller 3 absorbs enough water to need to wipe the water, the air push rod 408 is started, and the air push rod 408 pushes the fixed rod 409 through the top block 410, thereby driving the support rod 406 to rotate, and the support rod 406 drives the connecting rod 406 to move, and then drives the gear 404 to rotate. The rotation of the gear 404 drives the rack 403 to move, so that the first sliding blade 401 and the second sliding blade 402 can be pulled to move and contact the sponge roller 3, thereby realizing the wiping operation of the sponge roller 3. The water scraped by the first sliding blade 401 flows out from both sides of the first sliding blade 401, and the water scraped by the second sliding blade 402 flows along the guide piece 412 to both sides of the second sliding blade 402, preventing the water scraped by the second sliding blade 402 from flowing back to the film;
[0042] When wiping is completed, the air push rod 408 is reset, and the spring sleeve rod 411 pushes the first sliding scraper 401 and the second sliding scraper 402 to reset, so that the sponge roller 3 will not be wiped all the time, thereby improving the service life.
[0043] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.
[0044] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.
Claims
1. A cooling device for a biaxially stretched film, characterized in that: It includes a cooling pool (1), and a mounting block (2) is fixedly connected to the top of the cooling pool (1). There are two mounting blocks (2), and a sponge roller (3) is rotatably connected between the two mounting blocks (2). A water scraping mechanism (4) is arranged on the mounting block (2), and the water scraping mechanism (4) includes a first sliding blade (401) and a second sliding blade (402).
2. The cooling device for the biaxially stretched film according to claim 1, characterized in that: Racks (403) are fixedly connected to both ends of the first sliding blade (401) and the second sliding blade (402), and a gear (404) is meshed between the racks (403).
3. The cooling device for the biaxially stretched film according to claim 2, characterized in that: A connecting rod (405) is rotatably connected to one side of the gear (404), and one end of the connecting rod (405) is rotatably connected to a support rod (406).
4. The cooling device for the biaxially stretched film according to claim 3, characterized in that: The bottom of the support rod (406) is rotatably connected to a mounting table (407), and a pneumatic push rod (408) is fixedly connected to one side of the top of the mounting table (407). A top block (410) is fixedly connected to the movable end of the pneumatic push rod (408).
5. The cooling device for the biaxially stretched film according to claim 3, characterized in that: A fixed rod (409) is fixedly connected to one side of the support rod (406), and the fixed rod (409) abuts against the top block (410).
6. The cooling device for the biaxially stretched film according to claim 1, characterized in that: The first sliding blade (401) and the second sliding blade (402) are slidably connected to the mounting block (2) through spring sleeve rods (411).
7. The cooling device for the biaxially stretched film according to claim 1, characterized in that: There are two groups of the water scraping mechanisms (4), and the two groups of water scraping mechanisms (4) are arranged in a mirror image. A guiding piece (412) is fixedly connected to one side of the top of the second sliding blade (402).
8. The cooling device for the biaxially stretched film according to claim 1, characterized in that: A conveying roller (5) is rotatably connected to the cooling pool (1). There are multiple conveying rollers (5), and an extrusion mechanism (6) is arranged on the top of one of the conveying rollers (5).