CPE cast film online intelligent shaping device

Abstract

The utility model relates to the field of cast film production technology, concretely to a kind of CPE cast film online intelligent setting device, including rack, cooling roll and limiting mechanism;Rack input end and output end are rotatably connected with conveying roller;Cooling roll is driven rotation by second drive mechanism installed on rack, serpentine pipe is evenly laid in cooling roll inner chamber, serpentine pipe outer wall is in contact with the inner circumferential wall of cooling roll, rack input end, rack output end and the inner wall of rack and close cooling roll place are evenly provided with temperature sensor;Limiting mechanism is made of two groups of guide rollers symmetrically distributed below cooling roll.The utility model is equipped with cooling roll and limiting mechanism, which is convenient to fully adhere the cooling cylinder in cooling roll to the heat conduction of cast film, improves cooling setting efficiency;Through cooling mechanism, it is convenient to blow the cool wind of suitable temperature and wind speed to cooling roll, accelerate cooling cylinder heat dissipation, avoid local overheating, further improve cast film cooling setting quality.

Description

Technical Field

[0001] This utility model relates to the field of cast film production technology, specifically to an online intelligent shaping device for CPE cast film. Background Technology

[0002] CPE cast film is a high-performance, widely used plastic packaging material. During production, molten plastic raw material is extruded through the extrusion mechanism of a casting machine, passing through an extrusion die onto two pressure rollers of a shaping device. The molten plastic raw material is then extruded by the cooperation of the two pressure rollers and pulled by a traction mechanism to form the final product.

[0003] Chinese Patent No. CN221271791U discloses an online shaping device for cast film, which cools, presses, and shapes cast film. It can adapt to cast film of different thicknesses, and can expel gas present in the cast film to improve the density of the cast film. It includes a base and two uprights. The uprights are fixedly installed at the front and rear ends of the top of the base. A guiding mechanism is installed on the left and right sides of the two uprights, and a pressing mechanism is installed in the middle of the two uprights to cool, press, and shape the cast film. An adjustment component is installed on the pressing mechanism, a leveling mechanism is installed in the middle of the two uprights, and a cooling mechanism is installed above the pressing mechanism.

[0004] However, the above-mentioned publicly disclosed solutions have the following shortcomings: they only blow room temperature air to the cooling roller through the arc-shaped shell, which is a single cooling method. For cast films with large thickness or high production speed, the heat on the surface of the cooling roller is difficult to dissipate quickly, which can easily lead to insufficient local cooling, resulting in uneven casting film setting effect. Some areas may shrink and deform due to slow cooling. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an online intelligent shaping device for CPE cast film.

[0006] The technical solution of this utility model is as follows: an online intelligent shaping device for CPE cast film, comprising: a frame, with conveyor rollers rotatably connected to both its input and output ends; a cooling roller, driven to rotate by a second drive mechanism mounted on the frame, wherein a serpentine tube is uniformly laid in the inner cavity of the cooling roller, the outer wall of the serpentine tube is in contact with the inner circumferential wall of the cooling roller, the input end of the serpentine tube extends to the outside of one end of the cooling roller and is connected to an external coolant supply mechanism, and the output end of the serpentine tube extends to the outside of the other end of the cooling roller and is connected to an external coolant recovery mechanism; temperature sensors are provided at the input end of the frame, the output end of the frame, and the inner wall of the frame near the cooling roller; and a limiting mechanism, which is distributed below the cooling roller, the limiting mechanism consisting of two sets of guide rollers symmetrically distributed below the cooling roller, the guide rollers being rotatably connected to the inner wall of the frame.

[0007] Preferably, the cooling roller consists of a cooling cylinder, an end cap detachably mounted at the end of the cooling cylinder, and a rotating tube mounted on the end cap. The serpentine tube is distributed inside the cooling cylinder and fits against the inner wall of the cooling cylinder. Two sets of end caps are provided. Two sets of flow-collecting discs are also provided inside the cooling cylinder. The two sets of flow-collecting discs are respectively connected to the input end and the output end of the serpentine tube. The water inlet pipe is rotatably connected to one set of rotating tubes and one set of flow-collecting discs. The water outlet pipe is rotatably connected to the other set of rotating tubes and the other set of flow-collecting discs.

[0008] Preferably, the second drive mechanism consists of a chassis mounted on one side wall of the frame, a bracket mounted on the other side wall of the frame, and a gear transmission assembly disposed in the chassis. The gear transmission assembly consists of two sets of meshing gears. One set of gears is mounted on one set of rotating tubes, and the other set of gears is driven to rotate by a motor mounted in the chassis. A reducer is disposed between the motor and the gears. The water inlet pipe extends to the outside of the chassis and is connected to the chassis. The water outlet pipe passes through the bracket.

[0009] Preferably, a throttle valve is installed on the inlet pipe near the input end, and a water pressure sensor and a check valve are installed on the outlet pipe near the output end.

[0010] Preferably, the limiting mechanism further includes: a mounting groove, which is provided in two sets, the two sets of mounting grooves are distributed on the inner wall of the frame, a guide rod is installed inside the mounting groove, and two sets of slide seats are slidably sleeved on the outer circumferential surface of the guide rod, the slide seats are slidably connected to the mounting groove, and the guide roller is rotatably connected to the slide seats; and an elastic element, which is provided in four sets, the elastic element is movably sleeved on the outside of the guide rod, one end of the elastic element is connected to the side end of the mounting groove, and the other end is connected to the adjacent slide seat.

[0011] Preferably, the frame also includes a cooling assembly, which consists of a cold air supply mechanism located at the top of the frame and an arc-shaped cover installed inside the frame. The arc-shaped cover is distributed above the cooling roller and surrounds the outside of the cooling roller. The output end of the cold air supply mechanism is connected to the input end of the arc-shaped cover. Multiple sets of air outlets are evenly arranged on the inner wall of the arc-shaped cover, and the air outlets correspond to the cooling roller.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: the setting of the cooling roller and the limiting mechanism facilitates the full contact between the cast film and the cooling cylinder in the cooling roller. The cooling liquid flowing in the inner cavity of the cooling roller facilitates the heat conduction of the cast film. The limiting mechanism can improve the tension of the cast film, avoid loosening and entanglement during the cooling process, and improve the cooling and shaping efficiency. The cooling mechanism facilitates the blowing of cold air with appropriate temperature and wind speed onto the cooling roller, accelerates the heat dissipation of the cooling cylinder, avoids local overheating, and further improves the cooling and shaping quality of the cast film. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the frame of this utility model; Figure 3 This is a schematic diagram of the connection between the cooling roller and the frame of this utility model; Figure 4 This is a schematic diagram of the distribution of the limiting mechanism and the cooling cylinder of this utility model.

[0014] Reference numerals in the attached drawings: 1. Frame; 101. Conveyor roller; 2. Cooling cylinder; 201. Rotary tube; 202. Concentrating plate; 203. Serpentine tube; 204. Water inlet pipe; 205. Water outlet pipe; 206. End cap; 3. Mounting groove; 301. Guide rod; 302. Slide seat; 303. Elastic element; 304. Guide roller; 4. Casing; 401. Bracket; 5. Air supply mechanism; 501. Arc-shaped cover; 502. Air outlet. Detailed Implementation

[0015] Example 1, as Figures 1 to 4 As shown, this utility model proposes an online intelligent shaping device for CPE cast film, including a frame 1, a cooling roller, and a limiting mechanism. The frame 1 has multiple sets of conveyor rollers 101 rotatably connected to both its input and output ends. These multiple sets of conveyor rollers 101 are driven to rotate synchronously by a first driving mechanism, which consists of a motor and a chain drive assembly. The chain drive assembly includes a tensioning component and is connected to the rotating shafts on the multiple sets of conveyor rollers 101. The rotating shafts are rotatably connected to the side wall of the frame 1 via bearings. The motor is connected to the chain drive assembly, and a reducer is provided between the motor and the chain drive assembly. The cooling roller is driven to rotate by a second driving mechanism mounted on the frame 1. A serpentine tube 203 is evenly laid inside the cooling roller, and the outer wall of the serpentine tube 203... The serpentine tube 203, with a square cross-section, contacts the inner wall of the cooling roller to increase the contact area with the inner wall of the cooling cylinder 2. The input end of the serpentine tube 203 extends to the outside of one end of the cooling roller and connects to the external coolant supply mechanism. The output end of the serpentine tube 203 extends to the outside of the other end of the cooling roller and connects to the external coolant recovery mechanism. Temperature sensors are installed at the input end, output end, and inner wall of the frame 1 near the cooling roller. The temperature of the cast film can be monitored in real time by the temperature sensors, and the monitoring information is transmitted to the controller, which controls each component. The limiting mechanism is distributed below the cooling roller and consists of two sets of guide rollers 304 symmetrically distributed below the cooling roller. The guide rollers 304 are rotatably connected to the inner wall of the frame 1 through bearings.

[0016] Furthermore, the cooling roller consists of a cooling cylinder 2, an end cap 206 detachably mounted on the end of the cooling cylinder 2 by bolts, and a rotating tube 201 mounted on the end cap 206. The serpentine tube 203 is distributed inside the cooling cylinder 2 and fits against the inner wall of the cooling cylinder 2. Two sets of end caps 206 are provided. Two sets of flow-collecting discs 202 are also provided inside the cooling cylinder 2. The two sets of flow-collecting discs 202 are respectively connected to the input end and the output end of the serpentine tube 203. The water inlet pipe 204 is rotatably connected to one set of rotating tubes 201 and one set of flow-collecting discs 202 through bearings. The water outlet pipe 205 is rotatably connected to another set of rotating tubes 201 and another set of flow-collecting discs 202 through bearings. A sealing ring is provided at the bearing mounting point to prevent leakage.

[0017] Furthermore, the second drive mechanism consists of a housing 4 mounted on one side wall of the frame 1, a bracket 401 mounted on the other side wall of the frame 1, and a gear transmission assembly disposed in the housing 4. The gear transmission assembly consists of two sets of meshing gears. One set of gears is mounted on one set of rotating pipes 201, and the other set of gears is driven to rotate by a motor mounted in the housing 4. A reducer is disposed between the motor and the gears. The water inlet pipe 204 extends to the outside of the housing 4 and is fixedly connected to the housing 4. The water outlet pipe 205 passes through the bracket 401 and is fixedly connected to the bracket 401.

[0018] Furthermore, a throttle valve is installed on the inlet pipe 204 near the input end, and a water pressure sensor and a check valve are installed on the outlet pipe 205 near the output end. The throttle valve and water pressure sensor are used to detect the flow rate of coolant entering the serpentine tube 203, so as to avoid too much or too little coolant, so that the coolant can fully contact the inner wall of the serpentine tube 203 and transfer the heat on the cooling cylinder 2. The check valve is set to prevent coolant backflow.

[0019] Furthermore, the limiting mechanism also includes mounting grooves 3 and elastic elements 303; there are two sets of mounting grooves 3, which are distributed on the inner wall of the frame 1. Guide rods 301 are installed inside the mounting grooves 3. Two sets of slide seats 302 are slidably sleeved on the outer circumferential surface of the guide rods 301. The slide seats 302 are slidably connected to the mounting grooves 3. The guide rollers 304 are rotatably connected to the slide seats 302 through bearings; there are four sets of elastic elements 303. The elastic elements 303 are movably sleeved on the outside of the guide rods 301. One end of the elastic element 303 is connected to the side end of the mounting groove 3, and the other end is connected to the adjacent slide seat 302. The elastic element 303 is a spring.

[0020] In this embodiment, the cast film bypasses the conveyor roller 101 at the input end of the frame 1, one set of guide rollers 304, the cooling cylinder 2, and another set of guide rollers 304, then bypasses the conveyor roller 101 at the output end of the frame 1 and connects to an external traction mechanism. The controller activates the first drive mechanism to drive multiple sets of conveyor rollers 101 to rotate synchronously. Simultaneously, the controller activates the second drive mechanism to drive the cooling roller to rotate. The rotation speed of the cooling roller is matched with the rotation speed of the conveyor roller 101, conveying the CPE cast film to be shaped to the cooling roller. Encoders are installed on the cooling roller tube 201 and the shaft of the conveyor roller 101 to collect their rotation speed signals in real time and transmit them to the controller. The controller ensures that the rotation speeds of the cooling roller and the conveyor roller 101 are strictly matched. The two sets of guide rollers 304 are connected to corresponding elastic elements 303. Under the elastic force, it can adaptively adjust along the horizontal direction of the mounting groove 3, so that the guide roller 304 is in close contact with the upper surface of the cast film, thereby tightly adhering the cast film to the surface of the cooling cylinder 2, increasing the contact area between the cast film and the cooling cylinder 2, improving heat dissipation efficiency, and the setting of the limiting mechanism can also improve the tension of the cast film, preventing loosening and entanglement during the traction process; the external coolant supply mechanism is activated by the controller to deliver coolant from the inlet pipe 204 to the corresponding concentrator 202. The coolant is diverted through the concentrator 202 to the serpentine pipe 203. The serpentine pipe 203 is in contact with the inner wall of the cooling cylinder 2, quickly absorbing the heat from the surface of the cooling cylinder 2. The coolant after absorbing heat is collected through another set of concentrators 202 to the outlet pipe 205, and finally flows back to the external coolant recovery mechanism.

[0021] Example 2, as Figure 1 , Figure 2 and Figure 4 As shown, the present invention proposes an online intelligent shaping device for CPE cast film. Compared with Embodiment 1, the frame 1 further includes a cooling assembly. The cooling assembly consists of a cold air supply mechanism 5 located at the top of the frame 1 and an arc-shaped cover 501 installed inside the frame 1. The arc-shaped cover 501 is distributed above the cooling roller and surrounds the outside of the cooling roller. The output end of the cold air supply mechanism 5 is connected to the input end of the arc-shaped cover 501. Multiple sets of air outlets 502 are evenly arranged on the inner wall of the arc-shaped cover 501, and the air outlets 502 correspond to the cooling roller. The cold air supply mechanism 5 consists of a cooling box, an adjustable speed fan installed inside the cooling box, an adjustable power cooling plate installed in the cooling box, and a dustproof net installed at the air inlet of the cooling box.

[0022] In this embodiment, based on the temperature detected by the temperature sensor near the cooling roller, the controller activates the power of the cooling chip and the speed of the fan in the cold air supply mechanism 5 to generate cold air at a set temperature. The cold air enters the arc-shaped cover 501 and is blown onto the surface of the cooling roller by multiple sets of air outlets 502, accelerating the dissipation of heat from the cooling cylinder 2 and preventing local overheating.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An online intelligent shaping device for CPE cast film, characterized in that, include: The frame (1) has a conveyor roller (101) rotatably connected to both its input and output ends. The cooling roller is driven to rotate by a second drive mechanism mounted on the frame (1). The inner cavity of the cooling roller is uniformly covered with a serpentine tube (203). The outer wall of the serpentine tube (203) is in contact with the inner circumferential wall of the cooling roller. The input end of the serpentine tube (203) extends to the outside of one end of the cooling roller and is connected to an external coolant supply mechanism. The output end of the serpentine tube (203) extends to the outside of the other end of the cooling roller and is connected to an external coolant recovery mechanism. Temperature sensors are provided at the input end of the frame (1), the output end of the frame (1), and the inner wall of the frame (1) and near the cooling roller. And a limiting mechanism, which is located below the cooling roller. The limiting mechanism consists of two sets of guide rollers (304) symmetrically distributed below the cooling roller. The guide rollers (304) are rotatably connected to the inner wall of the frame (1).

2. The online intelligent shaping device for CPE cast film according to claim 1, characterized in that, The cooling roller consists of a cooling cylinder (2), an end cap (206) detachably installed at the end of the cooling cylinder (2), and a rotating tube (201) installed on the end cap (206). The serpentine tube (203) is distributed inside the cooling cylinder (2) and fits against the inner wall of the cooling cylinder (2). There are two sets of end caps (206). There are also two sets of flow-collecting discs (202) inside the cooling cylinder (2). The two sets of flow-collecting discs (202) are connected to the input end and output end of the serpentine tube (203) respectively. The water inlet pipe (204) is rotatably connected to one set of rotating tubes (201) and one set of flow-collecting discs (202) respectively. The water outlet pipe (205) is rotatably connected to another set of rotating tubes (201) and another set of flow-collecting discs (202) respectively.

3. The online intelligent shaping device for CPE cast film according to claim 2, characterized in that, The second drive mechanism consists of a housing (4) installed on one side wall of the frame (1), a bracket (401) installed on the other side wall of the frame (1), and a gear transmission assembly installed in the housing (4). The gear transmission assembly consists of two sets of meshing gears. One set of gears is installed on one set of rotating tubes (201), and the other set of gears is driven to rotate by a motor installed in the housing (4). A reducer is provided between the motor and the gears. The water inlet pipe (204) extends to the outside of the housing (4) and is connected to the housing (4). The water outlet pipe (205) passes through the bracket (401).

4. The online intelligent shaping device for CPE cast film according to claim 3, characterized in that, A throttle valve is installed on the inlet pipe (204) near the input end, and a water pressure sensor and a check valve are installed on the outlet pipe (205) near the output end.

5. The online intelligent shaping device for CPE cast film according to claim 1, characterized in that, The limiting mechanism also includes: The mounting groove (3) is provided in two sets. The two sets of mounting grooves (3) are distributed on the inner wall of the frame (1). The mounting groove (3) is equipped with a guide rod (301). Two sets of slide seats (302) are slidably sleeved on the outer circumferential surface of the guide rod (301). The slide seats (302) are slidably connected to the mounting groove (3). The guide roller (304) is rotatably connected to the slide seats (302). And the elastic element (303) is provided in four sets. The elastic element (303) is movably sleeved outside the guide rod (301). One end of the elastic element (303) is connected to the side end of the mounting groove (3), and the other end is connected to the adjacent slide (302).

6. The online intelligent shaping device for CPE cast film according to claim 1, characterized in that, The frame (1) also includes a cooling assembly, which consists of a cold air supply mechanism (5) located at the top of the frame (1) and an arc-shaped cover (501) installed inside the frame (1). The arc-shaped cover (501) is distributed above the cooling roller and surrounds the outside of the cooling roller. The output end of the cold air supply mechanism (5) is connected to the input end of the arc-shaped cover (501). Multiple sets of air outlets (502) are evenly arranged on the inner wall of the arc-shaped cover (501), and the air outlets (502) correspond to the cooling roller.

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