A novel feeding mechanism for breathable film casting machines
By combining a servo motor-driven gear system with agitator blades and crushing blades, the problems of uneven material distribution and incomplete crushing in the feeding mechanism of the permeable film casting machine are solved, achieving uniform mixing and crushing of materials, and improving film quality and operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU LUOJIANG MINWANG PLASTIC CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional breathable film casting machines lack an efficient mixing mechanism in their feeding mechanism, resulting in uneven material distribution, clumping, or stratification. This makes it difficult to break the material to the ideal fineness and uniformity, thus affecting film quality.
The first servo motor drives the active gear to drive the driven gear, and the connecting rod drives the stirring rod and stirring blade to rotate. Combined with the crushing blades on the outer wall of the stirring blade, the material is initially mixed and crushed to ensure the uniformity of the material. The auger blades achieve continuous and uniform conveying.
This achieves uniform distribution and crushing of materials, ensuring the uniformity and particle size of the final film, and improving operational safety and the working environment of the equipment.
Smart Images
Figure CN224275706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of breathable film casting machine technology, and in particular to a novel feeding mechanism for a breathable film casting machine. Background Technology
[0002] A breathable film casting machine is a specialized device for producing breathable film materials. It uniformly coats (casts) a liquid slurry containing a specific formula (usually polymers, additives, etc.) onto a substrate (such as non-woven fabric, paper, or an independent mesh structure) under precisely controlled temperature and tension. After drying and curing, a thin, uniform film structure that allows air or water vapor to pass through is formed. This machine is a key piece of equipment for manufacturing breathable materials needed in hygiene products (such as baby diapers and sanitary napkins), medical dressings, and protective clothing. Its core function lies in precisely controlling the thickness, uniformity, and breathability of the film layer. The dedicated feeding mechanism of the breathable film casting machine is one of its core components. Its main task is to stably, uniformly, and continuously transport the prepared slurry (usually a mixture of polymers, solvents, and additives) into the casting die.
[0003] Traditional breathable film casting machines may lack an efficient mixing mechanism or have a single mixing method, resulting in uneven material distribution before entering the crushing zone, with clumping or stratification. This affects the subsequent crushing effect and the uniformity of the final film. Furthermore, relying solely on simple extrusion or unidirectional shear force for crushing limits the processing capacity for harder, tougher, or clumped materials, making it difficult to crush the material to the ideal fineness and uniformity, and easily producing large particles or incomplete crushing.
[0004] Therefore, those skilled in the art have provided a novel feeding mechanism specifically for a breathable film casting machine to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a new type of feeding mechanism for a breathable film casting machine. The mechanism uses a first servo motor to drive the active gear, which in turn drives the driven gear, thereby causing the connecting rod to rotate the stirring rod and the stirring blades on it. The design of the stirring blades helps to initially mix and tumble the material, making the material distribution more uniform and preparing it for subsequent crushing. In addition, through multiple crushing blades on the outer wall of the stirring blades, the rotating blades impact, shear, and grind the material entering the crushing box at high speed, which can effectively crush large pieces or clumps of material into smaller and more uniform particles or powder.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A novel feeding mechanism for a breathable film casting machine includes a base plate, a crushing box, and a feeding box. A top cover is tightly fitted to the upper surface of the crushing box. A protective shell is fixedly connected to the middle of one side of the upper surface of the top cover. A first servo motor is fixedly connected to one side of the top surface inside the protective shell. A drive gear is fixedly connected to the output end of the first servo motor. A driven gear meshes with the other side of the drive gear. A connecting rod is fixedly connected to the middle of the driven gear. A stirring rod is fixedly connected to the lower end of the connecting rod. The lower end of the stirring rod penetrates the top cover to the lower end of the crushing box and is fixedly connected to multiple stirring blades. Multiple crushing blades are fixedly connected to the outer wall of each stirring blade. A connecting pipe is connected through the middle of the lower end of the other side of the crushing box. The other side of the connecting pipe is connected through the interior of the lower end of one side of the feeding box.
[0008] Through the above technical solution, the tight fit between the top cover and the upper surface of the crushing box ensures the airtightness of the crushing box, preventing dust or material splashing, improving the working environment, and facilitating subsequent material discharge and cleaning. The protective shell houses the motor and transmission gears, protecting the precision transmission components from material contamination and physical damage, preventing potential hazards during operation, and improving operational safety. The first servo motor drives the active gear, which in turn drives the driven gear, causing the connecting rod to rotate the stirring rod and its stirring blades. The design of the stirring blades helps to initially mix and agitate the material, making the material distribution more uniform and preparing it for subsequent crushing. In addition, the multiple crushing blades on the outer wall of the stirring blades cause the rotating blades to impact, shear, and grind the material entering the crushing box at high speed, effectively crushing large or agglomerated materials into smaller, more uniform particles or powder. This combination of mixing and crushing can not only handle harder or agglomerated materials, but also ensure that the materials are fully mixed during the crushing process, resulting in uniform particle size of the final material.
[0009] Furthermore, the lower end of the feeding box is fixedly connected to the other side of the upper surface of the base plate, and a second servo motor is fixedly connected to the inner bottom surface of the other side of the upper surface of the base plate. The output end of the second servo motor passes through the base plate and the feeding box to the inside of the feeding box and is fixedly connected to a rotating rod. The outer wall of the rotating rod is fixedly connected to an auger blade, and the upper end of the rotating rod is rotatably connected to the inner top surface of the feeding box.
[0010] Through the above technical solution, the second servo motor drives the rotating rod to rotate the auger blades. The auger is a very effective device for conveying powdery, granular or small block materials. It can achieve continuous, uniform and adjustable material conveying. This combination allows the material to be accurately and stably conveyed from the bottom of the feeding box to the discharge port, ensuring the requirements of subsequent processes for material supply and speed.
[0011] Furthermore, the front and rear ends and both sides of the lower surface of the crushing box are fixedly connected with support legs, and the lower ends of the support legs are in close contact with the upper surface of the base plate.
[0012] The above technical solution uses support legs to stably support the crushing box.
[0013] Furthermore, a PLC control panel is fixedly connected to the outer wall of the front end of the crushing box;
[0014] The above technical solution uses a PLC control panel to control the operation of the entire equipment.
[0015] Furthermore, a discharge pipe is connected through to the other side of the upper end of the feeding box;
[0016] The above technical solution uses a discharge pipe to remove the processed material from the equipment.
[0017] Furthermore, the upper end of the connecting rod is rotatably connected to the inner top surface on the other side of the protective shell;
[0018] Through the above technical solution and this design, the rotational power of the gear can be efficiently and stably transmitted to the connecting rod, and finally drive the stirring rod and stirring blade below to carry out stirring and crushing operations, which ensures the smoothness and continuity of the stirring action.
[0019] Furthermore, a feed pipe is connected through the middle of the other side of the upper surface of the top cover;
[0020] The above technical solution uses a feed pipe to add materials into the crushing chamber.
[0021] This utility model has the following beneficial effects:
[0022] This invention proposes a novel feeding mechanism for a breathable film casting machine. A first servo motor drives a drive gear, which in turn drives a driven gear, causing the connecting rod to rotate the stirring rod and its stirring blades. The stirring blades are designed to facilitate initial mixing and agitation of the material, resulting in a more uniform material distribution and preparing it for subsequent crushing. Furthermore, multiple crushing blades on the outer wall of the stirring blades cause the rotating blades to impact, shear, and grind the material entering the crushing chamber at high speed. This effectively breaks large or clumped materials into smaller, more uniform particles or powder. This combination of mixing and crushing not only handles harder or clumped materials but also ensures thorough mixing during the crushing process, resulting in a final material with uniform particle size. Attached Figure Description
[0023] Figure 1 This is an isometric view of a novel feeding mechanism for a breathable film casting machine proposed in this utility model;
[0024] Figure 2 This is a front cross-sectional view of a novel feeding mechanism for a breathable film casting machine proposed in this utility model;
[0025] Figure 3 This is a partial structural isometric view of a novel feeding mechanism for a breathable film casting machine proposed in this utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Base plate; 2. Crushing box; 201. PLC control panel; 202. Support leg; 203. Connecting pipe; 3. Top cover; 301. Feed pipe; 302. Protective shell; 4. Feeding box; 401. Discharge pipe; 5. First servo motor; 501. Drive gear; 502. Driven gear; 503. Connecting rod; 504. Stirring rod; 505. Stirring blade; 506. Crushing blade; 6. Second servo motor; 601. Rotating rod; 602. Screwdriver blade. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] Reference Figure 1 and Figure 2This utility model provides a specific embodiment: a novel feeding mechanism for a breathable film casting machine, comprising a base plate 1, a crushing box 2, and a feeding box 4. A top cover 3 is tightly fitted to the upper surface of the crushing box 2. A protective shell 302 is fixedly connected to the middle of one side of the upper surface of the top cover 3. A first servo motor 5 is fixedly connected to one side of the inner top surface of the protective shell 302. A drive gear 501 is fixedly connected to the output end of the first servo motor 5. A driven gear 502 meshes with the other side of the drive gear 501. A driven gear 502 is fixedly connected to the middle of the driven gear 502. A connecting rod 503 is connected to the crushing box 2. A stirring rod 504 is fixedly connected to the lower end of the connecting rod 503. The lower end of the stirring rod 504 penetrates the top cover 3 to the lower end of the crushing box 2 and is fixedly connected to multiple stirring blades 505. Multiple crushing blades 506 are fixedly connected to the outer wall of each stirring blade 505. A connecting pipe 203 is connected through the middle of the lower end of the other side of the crushing box 2. The other side of the connecting pipe 203 is connected through the lower end of the feeding box 4. The top cover 3 fits tightly against the upper surface of the crushing box 2, ensuring the sealing of the interior of the crushing box 2. The protective housing 302 prevents dust or material splashing, improves the working environment, and facilitates subsequent material discharge and cleaning. The motor and transmission gear are placed inside the protective housing 302, which protects the precision transmission components from material contamination and physical damage, prevents potential dangers during operation, and improves operational safety. The first servo motor 5 drives the active gear 501 to drive the driven gear 502, thereby causing the connecting rod 503 to drive the stirring rod 504 and the stirring blades 505 on it to rotate. The design of the stirring blades 505 helps to initially mix and tumble the material, making the material distribution more uniform and preparing for subsequent crushing. In addition, the multiple crushing blades 506 on the outer wall of the stirring blades 505 enable the rotating blades to impact, shear, and grind the material entering the crushing box 2 at high speed, which can effectively crush large or agglomerated materials into smaller and more uniform particles or powder. This combination of mixing and crushing can not only handle harder or agglomerated materials, but also ensure that the materials are fully mixed during the crushing process, resulting in uniform particle size of the final material.
[0030] Reference Figure 2 and Figure 3The lower end of the feeding box 4 is fixedly connected to the other side of the upper surface of the base plate 1. A second servo motor 6 is fixedly connected to the inner bottom surface of the other side of the upper end of the base plate 1. The output end of the second servo motor 6 passes through the base plate 1 and the feeding box 4 to the inside of the feeding box 4 and is fixedly connected to a rotating rod 601. An auger blade 602 is fixedly connected to the outer wall of the rotating rod 601. The upper end of the rotating rod 601 is rotatably connected to the inner top surface of the feeding box 4. The second servo motor 6 drives the rotating rod 601 to drive the auger blade 602 to rotate. The auger is a very effective device for conveying powdery, granular or small block materials. It can achieve continuous, uniform and adjustable material conveying. This combination allows the material to be accurately and stably conveyed from the lower part of the feeding box 4 to the discharge port, ensuring the requirements of the subsequent process for the material supply and speed. Support legs 202 are fixedly connected to the front and rear ends and both sides of the lower surface of the crushing box 2. The lower ends of the support legs 202 are tightly fitted to the upper surface of the base plate 1. The support legs 202 are used to stably support the crushing box 2. The outer wall of the front end of the crushing box 2 is fixedly connected to the PLC control panel 201, which is used to control the operation of the entire equipment. The other side of the upper end of the feeding box 4 is connected to the discharge pipe 401, which is used to discharge the processed material from the equipment. The upper end of the connecting rod 503 is rotatably connected to the inner top surface of the other side of the protective shell 302. Through this design, the rotational power of the gear can be efficiently and stably transmitted to the connecting rod 503, and finally drive the stirring rod 504 and stirring blade 505 below to carry out stirring and crushing operations. This ensures the smoothness and continuity of the stirring action. The middle of the other side of the upper surface of the top cover 3 is connected to the feed pipe 301, which is used to add material into the crushing box 2.
[0031] Working principle: First, the material is added into the crushing box 2 through the feed pipe 301 on the top cover 3. The added material first comes into contact with the stirring and crushing system driven by the first servo motor 5. The motor drives the drive gear 501, which meshes with the driven gear 502, causing the connecting rod 503 to rotate. The stirring rod 504 at the lower end of the connecting rod 503 and its stirring blades 505 rotate accordingly. Multiple crushing blades 506 on the outer periphery of the stirring blades 505 rotate at high speed, impacting, shearing, and grinding the material, crushing it into uniform particles or powder. Stirring ensures uniform mixing of materials. After processing, the materials flow into the feeding box 4 below through the connecting pipe 203 at the lower end of the crushing box 2. Inside the feeding box 4, the second servo motor 6 drives the rotating rod 601 and the auger blades 602 on it to rotate, continuously and evenly pushing the materials upward from the lower part of the feeding box 4. Finally, the materials are discharged through the discharge pipe 401 at the upper end of the feeding box 4 and supplied to the air-permeable film casting machine for the next casting film forming process. The entire process can be monitored and controlled by the PLC control panel 201 fixed at the front end of the crushing box 2.
[0032] The following points should be noted in this article:
[0033] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A new type of special feeding mechanism for air permeable film casting machine, comprising a base plate (1), a crushing box (2) and a feeding box (4), characterized in that: The upper surface of the crushing box (2) is tightly fitted with a top cover (3). A protective shell (302) is fixedly connected to the middle of one side of the upper surface of the top cover (3). A first servo motor (5) is fixedly connected to one side of the inner top surface of the protective shell (302). A drive gear (501) is fixedly connected to the output end of the first servo motor (5). A driven gear (502) meshes with the other side of the drive gear (501). A connecting rod (503) is fixedly connected to the middle of the driven gear (502). The lower end of the connecting rod (503) is fixedly connected to a stirring rod (504). The lower end of the stirring rod (504) passes through the top cover (3) to the lower end of the crushing box (2) and is fixedly connected to multiple stirring blades (505). Multiple crushing blades (506) are fixedly connected to the outer wall of each stirring blade (505). A connecting pipe (203) is connected through the middle of the lower end of the other side of the crushing box (2). The other side of the connecting pipe (203) is connected through the interior of the lower end of one side of the feeding box (4).
2. The novel feeding mechanism for a breathable film casting machine according to claim 1, characterized in that: The lower end of the feeding box (4) is fixedly connected to the other side of the upper surface of the base plate (1). The inner bottom surface of the other side of the upper end of the base plate (1) is fixedly connected to a second servo motor (6). The output end of the second servo motor (6) passes through the base plate (1) and the feeding box (4) to the inside of the feeding box (4) and is fixedly connected to a rotating rod (601). The outer wall of the rotating rod (601) is fixedly connected to an auger blade (602). The upper end of the rotating rod (601) is rotatably connected to the inner top surface of the feeding box (4).
3. The novel feeding mechanism for a breathable film casting machine according to claim 1, characterized in that: The front and rear ends and both sides of the lower surface of the crushing box (2) are fixedly connected with support legs (202), and the lower ends of the support legs (202) are tightly attached to the upper surface of the base plate (1).
4. The novel feeding mechanism for a breathable film casting machine according to claim 1, characterized in that: A PLC control panel (201) is fixedly connected to the outer wall of the front end of the crushing box (2).
5. The novel feeding mechanism for a breathable film casting machine according to claim 1, characterized in that: The other side of the upper end of the feeding box (4) is connected to the discharge pipe (401).
6. The novel feeding mechanism for a breathable film casting machine according to claim 1, characterized in that: The upper end of the connecting rod (503) is rotatably connected to the inner top surface of the protective shell (302) on the other side.
7. The novel feeding mechanism for a breathable film casting machine according to claim 1, characterized in that: The feed pipe (301) is connected through the middle of the other side of the upper surface of the top cover (3).