Extrusion equipment for film production

Abstract

The utility model provides extrusion equipment for film production, which comprises an extruder, a hopper, a stirring mechanism, a cooling tank, a rolling frame and a fan, the top of the extruder is communicated with the hopper, the stirring mechanism is arranged in the hopper, the cooling tank is arranged on one side of the extruder, the rolling frame is arranged on one side of the cooling tank, and the fan is arranged on the top of the cooling tank. The stirring mechanism comprises a motor, a connecting shaft, stirring blades and scrapers, the output end of the motor is fixedly connected with the connecting shaft, one end of the connecting shaft is provided with the stirring blades, and the other end is provided with the scrapers. According to the scheme, the stirring mechanism is arranged in the hopper, the motor is started, the connecting shaft drives the stirring blades and the connecting rod to rotate, the stirring blades stir materials, normal discharging of the materials is guaranteed, blocking is avoided, meanwhile, the connecting rod rotates to drive the scraping pieces to rotate, the materials adsorbed on the inner wall of the hopper are scraped, and the wall hanging phenomenon is avoided; the problem of hopper blockage is effectively solved preferentially, and continuity and stability of raw material supply are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film production, specifically to an extrusion equipment for film production. BACKGROUND

[0002] The production method of the plastic film for packaging mainly extrudes polypropylene, high-density ethylene and other raw materials through a screw extruder, forms a plastic film through a film forming machine. At present, the single screw extruder is the most widely used in the plastic film extruder. The plastic particles are conveyed from the hopper to the extrusion port through the screw, and the plastic particles are heated and melted by the heating device inside the extruder during the conveying process. The melted plastic is shaped into the required film shape through the mold.

[0003] The utility model discloses a PVC film extrusion calender production unit, relates to PVC film production equipment field, the hopper in the device does not have the function of stirring to plastic particles, causes the plastic particles to be easy to jam in the bottom position of the hopper, affects the unloading, and the temperature of the film after extrusion is relatively high, and it is not convenient to effectively cool through the pre-cooling roller.

[0004] Specifically, in the traditional extrusion equipment, the hopper usually does not have stirring function, which will cause the plastic particles to accumulate at the bottom of the hopper, especially under the condition of high humidity or large particles. According to the actual operation record, the height of the hopper is usually 1.5 meters, and the width is 0.5 meters. Without stirring mechanism, the plastic particles will form a 0.3-meter-thick compacted layer at the bottom of the hopper. This compacted layer will hinder the flow of newly added plastic particles, causing the unloading to be not smooth. At the same time, if the plastic particles in the hopper form a compacted core with a diameter of 0.2 meters due to long-term static, the core will hinder the flow of other plastic particles in the hopper, causing the extruder to be unable to continuously and stably obtain raw material supply, thereby affecting the production efficiency.

[0005] In addition, after the film is extruded, the temperature of the film may be very high, and the high temperature may be above 150 DEG C. If effective cooling is not performed, the film will not be able to be wound and packaged subsequently. Using the traditional cooling method (pre-cooling roller) will result in poor effect when the temperature of the film is high. The pre-cooling roller can only reduce the temperature of the film to 100 DEG C. Therefore, the film is still too hot to directly contact the winding frame for winding. Generally, the thickness of the produced film is 0.05 millimeters, the width is 1 meter, and the extrusion speed is 5 meters per minute. If the cooling efficiency is not high, the temperature of the film after passing through the cooling tank is still higher than 80 DEG C, which will cause the film to shrink or deform during the winding process, affecting the quality of the film. UTILITY MODEL CONTENTS

[0006] In view of the problems existing in the prior art, the extrusion equipment for film production is provided to solve the problems in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model is through the following technical scheme to realize:In order to achieve the above-mentioned purpose, the utility model is through the following technical scheme to realize:An extrusion equipment for film production, including extruder, hopper, stirring mechanism, cooling tank, winding frame and fan, wherein, the hopper is communicated at the top of extruder, the stirring mechanism is arranged in the hopper, the cooling tank is arranged at one side of extruder, the winding frame is arranged at one side of cooling tank, the fan is arranged at the top of cooling tank, the stirring mechanism includes motor, connecting shaft, stirring blade and scraper, the motor output end is fixedly connected with connecting shaft, the connecting shaft one end is equipped with stirring blade, and the other end is equipped with scraper.

[0008] Compared with the prior art, the utility model has the beneficial effects of:

[0009] In order to solve the problems of hopper blockage and difficult cooling and temperature reduction after film extrusion in the traditional film production equipment, the utility model first proposes the setting of the stirring mechanism, in the scheme, the stirring mechanism is arranged in the hopper, by starting the motor, the connecting shaft drives the stirring blade and connecting rod to rotate, the stirring blade stirs the material, ensures the normal discharge of material, avoids blockage, at the same time, the connecting rod rotation drives the scraper to rotate, and the material adsorbed on the inner wall of hopper is scraped off, avoids the wall hanging phenomenon, preferentially effectively solves the problem of hopper blockage, improves the continuity and stability of raw material supply;

[0010] Secondly, the improved cooling system is proposed, in the scheme, the rotating roller, water tank, water pump, water suction pipe, conveying pipe, connecting pipe, shunt pipe, spray head and leakage groove are integrated in the cooling tank, by starting the water pump, the water in the water tank is pumped out and uniformly sprayed on the film through the spray head for cooling, then the fan is started to dry the film, the water in the cooling tank is returned to the water tank through the leakage groove, realizes the recycling of water, not only improves the cooling efficiency of film, but also saves water resources, reduces production cost, makes the film production process more efficient and stable, reduces the production cost, improves the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0011] The disclosure of the utility model is explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the utility model. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0012] Figure 1 It is the whole structure schematic view of the extrusion equipment for film production proposed in an embodiment of the utility model;

[0013] Figure 2 Structure schematic view of the stirring mechanism proposed in an embodiment of the utility model;

[0014] Figure 3 Structure schematic view of the water pump and the water pumping pipe cooperation operation proposed in an embodiment of the utility model;

[0015] Figure 4 Structure schematic view of the leakage tank and the filter screen cooperation operation proposed in an embodiment of the utility model;

[0016] Figure 5 For Figure 4 Structure enlarged schematic view of A in the figure.

[0017] Reference signs: 1, extruder; 2, hopper; 3, stirring mechanism; 31, motor; 32, connecting shaft; 33, stirring blade; 34, connecting rod; 35, scraper; 4, cooling tank; 41, rotating roller; 42, water tank; 43, water pump; 44, water pumping pipe; 45, conveying pipe; 46, connecting pipe; 47, shunt pipe; 48, spray head; 49, leakage tank; 4901, filter screen; 4902, mounting block; 4903, arc-shaped clamping groove; 4904, arc-shaped clamping block; 4905, spring; 4906, sliding block; 5, winding frame; 6, fan; 61, hollow plate; 62, air blowing nozzle. DETAILED DESCRIPTION

[0018] It is easy to understand that according to the technical scheme of the utility model, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the utility model. Therefore, the following detailed description and the drawings are only exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or regarded as the limitation or restriction of the technical scheme of the utility model.

[0019] As the understanding of the technical concept of the utility model, the main defects of the prior art in the field of film production include that the plastic particles in the hopper are easy to block and the cooling and temperature reduction efficiency of the film extrusion is low. Since it cannot effectively ensure the continuous and stable supply of raw materials and the rapid and uniform cooling of the film, the production efficiency is reduced, the product quality is damaged, and the production cost is increased.

[0020] As Figures 1-5As shown, as the first embodiment of the utility model, specific implementation, provide technical scheme: a kind of extrusion equipment for film production, including extruder 1, hopper 2, stirring mechanism 3, cooling tank 4, winding frame 5 and fan 6.Specific implementation, extruder 1 top is communicated with hopper 2, stirring mechanism 3 is arranged in hopper 2, extruder 1 side is provided with cooling tank 4, cooling tank 4 side is provided with winding frame 5, cooling tank 4 top is provided with fan 6, stirring mechanism 3 includes motor 31, connecting shaft 32, stirring blade 33 and scraper 35, motor 31 output end is fixedly connected with connecting shaft 32, connecting shaft 32 one end is equipped with stirring blade 33, other end is equipped with scraper 35.

[0021] In an embodiment of the utility model, it needs to be explained that, since the existing extrusion equipment has the problem of low cooling efficiency in the film production process, the temperature of the film after extrusion is still too high, which cannot be directly wound, affecting the production efficiency and film quality.It can be understood that the temperature of the film after extrusion can be as high as 150℃, and the traditional pre-cooling roller can only reduce it to 100℃, which is still not enough to meet the winding requirements.In order to solve this problem, an improved cooling tank 4 is proposed, which includes a rotating roller 41, a water tank 42, a water pump 43, a water suction pipe 44, a conveying pipe 45, a connecting pipe 46, a shunt pipe 47, a spray head 48 and a leakage groove 49.Specific implementation, rotating roller 41 is rotatably connected with the inner wall of cooling tank 4, water tank 42 is fixed on the bottom of cooling tank 4, water pump 43 is installed on one side of cooling tank 4, water suction end of water pump 43 is communicated with water tank 42 through water suction pipe 44, water discharge end of water pump 43 is communicated with connecting pipe 46 through conveying pipe 45, shunt pipe 47 is arranged on the outside of connecting pipe 46, spray head 48 is communicated with the outside of shunt pipe 47, leakage groove 49 is opened on the inner wall of cooling tank 4, and the bottom of leakage groove 49 is communicated with the top of water tank 42, the number of shunt pipes 47 is multiple, and multiple shunt pipes 47 are equidistantly arranged along the length direction of cooling tank 4, at least one spray head 48 is arranged on each shunt pipe 47 to realize communication, realizing rapid and effective cooling.In addition, multiple shunt pipes 47 are equidistantly arranged to ensure uniform distribution of cooling water, improve cooling effect, and in this way, the cooling efficiency of the film can be significantly improved, ensuring that the film reaches the appropriate temperature before winding, thereby improving the production quality and production efficiency of the film.

[0022] Based on the above technical concept, it needs to be explained that, in the existing film production equipment, the recycling efficiency of cooling water is not high during the cooling process, and impurities in the water may block the spray head, affecting the cooling effect, leading to uneven cooling of the film, and further affecting the quality and production efficiency of the film.If the impurities in the cooling water cannot be effectively filtered, the spray head 48 will be blocked, so that the cooling water cannot be uniformly sprayed on the film, causing uneven cooling of the film, affecting the physical properties of the film.

[0023] Therefore, as an embodiment of the utility model, an improved leakage groove 49 is provided, which comprises a filter screen 4901, a mounting block 4902, an arc-shaped clamping groove 4903, an arc-shaped clamping block 4904, a spring 4905 and a sliding block 4906. In specific implementation, the filter screen 4901 is arranged on the inner wall of the leakage groove 49 and is used for filtering impurities in the cooling water, so as to ensure that the spray head 48 is not blocked and the cooling water is kept clean. The mounting block 4902 is fixed to one side of the filter screen 4901, and the inner wall of the mounting block 4902 is provided with the arc-shaped clamping groove 4903. This design makes the filter screen 4901 convenient to install and disassemble, and facilitates cleaning and maintenance. The arc-shaped clamping block 4904 is slidably connected to the inner wall of the cooling groove 4, one side of the arc-shaped clamping block 4904 is fixedly connected with the spring 4905, and the spring 4905 provides locking force when the filter screen 4901 is installed in place, so as to ensure stable work of the filter screen. The other side of the arc-shaped clamping block 4904 is fixedly connected with the sliding block 4906, and the sliding block 4906 is slidably connected with the sliding groove on the inner wall of the cooling groove 4. It can be understood that the arc-shaped clamping block 4904 cooperates with the arc-shaped clamping groove 4903, so that the filter screen 4901 is detachably installed in the leakage groove 49, the spring 4905 is used for providing locking force when the filter screen 4901 is installed in place, and the sliding block 4906 slides in the sliding groove, so as to ensure that the arc-shaped clamping block 4904 is stably fixed to the inner wall of the cooling groove 4, and the effective filtering effect of the filter screen 4901 is also ensured.

[0024] In an embodiment of the utility model, based on the above-mentioned implementation scenario, the temperature of the film after passing through the cooling groove may still be higher than 80 DEG C, which will cause the film to shrink or deform during the winding process, affecting the final quality of the film. In order to solve this problem, an improved fan 6 is provided, which comprises a hollow plate 61 and a plurality of blowing nozzles 62. The blowing port of the fan 6 is connected through the hollow plate 61, the airflow is guided to the blowing nozzles 62, the blowing nozzles 62 are equidistantly arranged along the length direction of the hollow plate 61, the airflow is uniformly blown to the surface of the film, the moisture on the surface of the film is effectively removed, and the cooling process of the film is accelerated. In this way, the cooling efficiency of the film can be significantly improved, the temperature of the film before winding can be ensured to reach a suitable temperature, and the production quality and production efficiency of the film are improved.

[0025] In an embodiment of the utility model, the extrusion equipment further comprises a control system, the control system controls the start and stop of the motor 31 and the operation of the water pump 43 and the fan 6, so as to realize automatic control of the film production process. At the same time, the control system comprises at least one sensor, the sensor is used for monitoring the material level in the hopper 2, the water temperature in the cooling groove 4 and the thickness of the film, and transmitting data to the control system. The control system adjusts the rotating speed of the motor 31, the flow of the water pump 43 and the wind speed of the fan 6 according to the data provided by the sensor, so as to optimize the production process of the film.

[0026] The utility model discloses a principle is: through the stirring mechanism ensures the continuous stable supply of plastics granule in hopper, avoids the unsmooth of the discharge of the granule accumulation, simultaneously, adopts the efficient cooling tank design, combines the roller, water pump, shower nozzle etc. Component, realizes the quick even cooling of high temperature film, and further accelerates the evaporation of film surface moisture through the fan, ensures that the film reaches the suitable temperature before winding, in addition, the design of the leakage groove filters cooling water through the filter screen, prevents the impurity from blocking the shower nozzle, improves the cooling efficiency, and through the detachable filter screen structure, it is convenient to maintain and clean, and the overall scheme through the above-mentioned cooperation of the component, the efficiency and product quality of film production process are improved significantly.

[0027] The technical scope of the utility model is not limited to the contents in the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical thought of the utility model, and these modifications and changes should all belong to the protection scope of the utility model.

Claims

1. An extrusion apparatus for thin film production, characterized by, The utility model relates to an extrusion equipment for film production, including: extruder (1), hopper (2), stirring mechanism (3), cooling tank (4), winding frame (5) and fan (6), wherein, the top of extruder (1) is connected with hopper (2), the inside of hopper (2) is provided with stirring mechanism (3), one side of extruder (1) is provided with cooling tank (4), one side of cooling tank (4) is provided with winding frame (5), the top of cooling tank (4) is provided with fan (6), stirring mechanism (3) includes motor (31), connecting shaft (32), stirring blade (33) and scraper (35), the output end of motor (31) is fixedly connected with connecting shaft (32), one end of connecting shaft (32) is equipped with stirring blade (33), and the other end is equipped with scraper (35).

2. The extrusion equipment for film production according to claim 1, wherein, the cooling tank (4) comprises a rotating roller (41), a water tank (42), a water pump (43), a water suction pipe (44), a conveying pipe (45), a connecting pipe (46), a shunt pipe (47), a spray head (48) and a leakage groove (49), wherein, the rotating roller (41) is rotatably connected to the inner wall of the cooling tank (4), the water tank (42) is fixed to the bottom of the cooling tank (4), the water pump (43) is installed on one side of the cooling tank (4), the water suction end of the water pump (43) is communicated with the water tank (42) through the water suction pipe (44), the water discharge end of the water pump (43) is communicated with the connecting pipe (46) through the conveying pipe (45), the outer side of the connecting pipe (46) is provided with the shunt pipe (47), the outer side of the shunt pipe (47) is communicated with the spray head (48), and the leakage groove (49) is opened in the inner wall of the cooling tank (4), and the bottom of the leakage groove (49) is communicated with the top of the water tank (42).

3. The extrusion equipment for film production according to claim 2, wherein, the number of shunt pipes (47) is multiple, and multiple shunt pipes (47) are equidistantly arranged along the length direction of the cooling tank (4), and at least one spray head (48) is arranged on each shunt pipe (47) to realize communication.

4. The extrusion equipment for film production according to claim 1, wherein, the fan (6) comprises a hollow plate (61) and a plurality of air blowing nozzles (62), wherein, the hollow plate (61) is communicated with the blowing opening of the fan (6), the air blowing nozzles (62) are fixed to the bottom of the hollow plate (61), a plurality of air blowing nozzles (62) are equidistantly arranged along the length direction of the hollow plate (61), and the air blowing nozzles (62) are directly connected with the bottom of the hollow plate (61).

5. The extrusion equipment for film production according to claim 2, wherein, the leakage groove (49) comprises a filter screen (4901), a mounting block (4902), an arc-shaped clamping groove (4903), an arc-shaped clamping block (4904), a spring (4905) and a sliding block (4906), wherein, The filter screen (4901) is arranged on the inner wall of the leakage groove (49), the mounting block (4902) is fixed on one side of the filter screen (4901), the inner wall of the mounting block (4902) is provided with an arc-shaped clamping groove (4903), the inner wall of the cooling groove (4) is slidably connected with an arc-shaped clamping block (4904), one side of the arc-shaped clamping block (4904) is fixedly connected with a spring (4905), the other side of the arc-shaped clamping block (4904) is fixedly connected with a sliding block (4906), and the sliding block (4906) is slidably connected with the sliding groove on the inner wall of the cooling groove (4).

6. The extrusion apparatus for thin film production according to claim 1, wherein The extrusion device further comprises a control system, which controls the start and stop of the motor (31) and the operation of the water pump (43) and the fan (6) to realize automatic control of the film production process.

7. An extrusion apparatus for film production according to claim 6, characterized in that The control system comprises at least one sensor for monitoring the material level in the hopper (2), the water temperature in the cooling groove (4) and the thickness of the film, and transmitting data to the control system.

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