Anti-curling device of cast film machine

Abstract

The utility model discloses an anti-hemming device of a cast film machine, which belongs to the technical field of anti-hemming devices, and comprises a U-shaped plate, a limiting mechanism and a transmission mechanism, the bottom of the U-shaped plate is fixedly connected with a bottom plate, the two sides of the bottom of the bottom plate are fixedly connected with supporting blocks, the left side of the U-shaped plate is provided with a control panel, and the left side of the U-shaped plate is provided with the limiting mechanism. Two transmission motors are mounted on the right side of the U-shaped plate, two mounting plates are mounted in the center of the inner side of the U-shaped plate, limiting mechanisms are arranged on the mounting plates, and transmission mechanisms are arranged in front of and behind the mounting plates. Through the structural design of the limiting mechanism, the edge of a cast film can be limited and smoothed through mutual matching of the four limiting plates, the edge curling condition of the cast film in the moving process is prevented, the edge curling prevention effect is good, meanwhile, the edge curling prevention requirements of cast films with different thicknesses and different widths can be met, and the production efficiency is improved. Therefore, the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of anti-rolling edge device technology, specifically an anti-rolling edge device for a casting film machine. Background Technology

[0002] Cast film is a non-stretched, non-oriented flat extrusion film produced by quenching melt flow. A casting film machine is the equipment used to produce cast film. During the production process of cast film, polymer cast film is produced by molten and extruded polymer through a uniform, thin die opening onto a quenching roller. This process results in edge curling between the die and the quenching roller. Edge curling is caused by three factors: exfoliation expansion, surface tension, and edge stress effects. Currently, some companies remove the curled edges by cutting them off and recycle them as waste. However, this undoubtedly leads to material waste.

[0003] A search revealed Chinese patent CN208118407U, which discloses an anti-rolling structure for cast film, belonging to the field of cast film production equipment. The key technical features include a frame and an extrusion mold fixed to the frame. A support frame standing on the ground is located below the extrusion mold, and a cooling roller and a motor capable of driving the cooling roller are rotatably connected to the support frame. Air blowing structures are provided on both sides of the extrusion mold, each including connecting rods hinged to both ends of the mold. Movable air outlet pipes are provided on the connecting rods, with the end of the air outlet pipe closest to the cooling roller bent inwards. An air inlet pipe is provided at the end of the air outlet pipe furthest from the cooling roller, and a cooling pipe is fixed to the air inlet pipe, surrounding its outer surface. This invention is applied in the manufacturing process of cast film, solving the problem of inward shrinkage of the cast film edge and achieving the effect of preventing the cast film from rolling up.

[0004] However, the above design still has shortcomings. The design uses a blowing method to prevent edge curling, but the cast film will swing to a certain extent during the blowing process, and the cast film may still curl, so the edge curling effect is poor.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide an anti-rolling device for a casting film machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an anti-rolling device for a casting film machine, comprising a U-shaped plate, a limiting mechanism, and a transmission mechanism. A base plate is fixedly connected to the bottom of the U-shaped plate, and support blocks are fixedly connected to both sides of the bottom of the base plate. A control panel is installed on the left side of the U-shaped plate, and two drive motors are installed on the right side of the U-shaped plate. Two mounting plates are installed at the center of the inner side of the U-shaped plate, and a limiting mechanism is provided on the mounting plates. Transmission mechanisms are provided at both the front and rear of the mounting plates.

[0008] As a further embodiment of this utility model: the limiting mechanism includes a forward and reverse motor, and the forward and reverse motor is fixedly installed inside the mounting plate. The output end of the forward and reverse motor is fixedly sleeved with a second conical disk. The ends of the two second conical disks that are far apart from each other are meshed with a first conical disk. A rotating rod is fixedly connected inside the first conical disk.

[0009] As a further embodiment of this utility model: threaded rods are fixedly connected to both sides of the rotating rod, and a moving block is threadedly connected to the outer wall of the threaded rod. A crossbar is movably provided through the outer wall of the moving block. A transmission block is fixedly connected to the end of each of the two moving blocks that are close to each other. A fixed cavity is provided inside the transmission block. A connecting fixed groove is provided at the end of each of the two fixed cavities that are far apart from each other.

[0010] As a further embodiment of this utility model: a buffer rod is movably arranged inside the fixed cavity, and one end of the buffer rod passes through the fixed cavity and extends to the outside of the fixed cavity. Limiting plates are fixedly connected to the ends of the two buffer rods that are close to each other.

[0011] As a further embodiment of this utility model: a fixing plate is fixedly sleeved on the outer wall of the middle end of the buffer rod, and a spring is fixedly connected to the ends of the two fixing plates that are far apart from each other.

[0012] As a further embodiment of this utility model: the transmission mechanism includes a second transmission rod, one end of which is fixedly connected to the output end of the transmission motor, and the other end of which is fixedly connected to a second transmission wheel, and a second gear disc is fixedly sleeved on the outer wall of the second transmission rod.

[0013] As a further embodiment of this utility model: the top of the second gear disk is meshed with the first gear disk, the inside of the first gear disk is fixedly connected to the first transmission rod, and the left side of the first transmission rod is fixedly connected to the first transmission wheel.

[0014] This utility model has the following beneficial effects:

[0015] (1) Through the structural design of the limiting mechanism, the edge of the cast film can be limited and smoothed by the cooperation between the four limiting plates, preventing the cast film from curling during the movement. The anti-curling effect is good, and it can meet the anti-curling requirements of cast films of different thicknesses and widths, thereby improving the practicality of the equipment. It solves the problem that the anti-curling effect is achieved by the air-blowing design, but the cast film will swing to a certain extent during the air-blowing process, and the cast film may still curl, resulting in a poor anti-curling effect.

[0016] (2) Through the structural design of the drive motor and the drive mechanism, the cast film can be conveyed. The two sets of first drive wheels and second drive wheels convey the film at the same time, which can not only effectively ensure the conveying effect of the cast film, but also make it difficult for the cast film to curl under the action of the first drive wheel and the second drive wheel, thus improving the anti-curling effect. Attached Figure Description

[0017] Figure 1 This is a partial three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of a partial internal structure of the mounting plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal partial structure of the present invention from the front view.

[0020] Figure 4 This is an enlarged partial structural diagram of point A in this utility model;

[0021] Figure 5 This is an enlarged partial structural diagram of point B in this utility model;

[0022] Figure 6 This is an enlarged partial structural diagram of point C of this utility model.

[0023] In the diagram: 1. U-shaped plate; 2. Control panel; 3. Support block; 4. Mounting plate; 5. Base plate; 6. Drive motor; 7. Limiting mechanism; 701. First conical disc; 702. Second conical disc; 703. Rotating rod; 704. Forward and reverse motor; 705. Crossbar; 706. Threaded rod; 707. Fixing groove; 708. Fixing cavity; 709. Buffer rod; 710. Moving block; 711. Transmission block; 712. Spring; 713. Fixing plate; 714. Limiting plate; 8. Transmission mechanism; 801. First transmission wheel; 802. Second transmission wheel; 803. First gear disc; 804. First transmission rod; 805. Second gear disc; 806. Second transmission rod. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please see Figure 1-6This utility model provides an embodiment of an anti-rolling device for a casting film machine, comprising a U-shaped plate 1, a limiting mechanism 7, and a transmission mechanism 8. A base plate 5 is fixedly connected to the bottom of the U-shaped plate 1, and support blocks 3 are fixedly connected to both sides of the bottom of the base plate 5. A control panel 2 is installed on the left side of the U-shaped plate 1. Two mounting plates 4 are installed at the center of the inner side of the U-shaped plate 1. The mounting plate 4 is provided with a limiting mechanism 7, which includes a forward and reverse motor 704, which is fixedly installed inside the mounting plate 4. A second conical disc 702 is fixedly sleeved on the output end of the forward and reverse motor 704. A first conical disc 701 is meshed with the ends of the two second conical discs 702 that are far apart from each other. A rotating rod 703 is fixedly connected inside the first conical disc 701, and both sides of the rotating rod 703 are fixedly connected to... A threaded rod 706 is connected to the outer wall of the threaded rod 706, and a movable block 710 is threadedly connected to the outer wall of the movable block 710. A crossbar 705 is movably installed through the outer wall of the movable block 710. A transmission block 711 is fixedly connected to the end of each of the two movable blocks 710 that is close to each other. A fixed cavity 708 is provided inside the transmission block 711. A connecting fixed groove 707 is opened at the end of each of the two fixed cavities 708 that is far apart from each other. A buffer rod 709 is movably installed inside the fixed cavity 708, and one end of the buffer rod 709 passes through the fixed cavity 708 and extends to the outside of the fixed cavity 708. A limit plate 714 is fixedly connected to the end of each of the two buffer rods 709 that is close to each other. A fixed plate 713 is fixedly sleeved on the outer wall of the middle end of the buffer rod 709. A spring 712 is fixedly connected to the end of each of the two fixed plates 713 that is far apart from each other.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, during use, the four limiting plates 714 work together to limit and smooth the edge of the cast film, preventing curling during movement. The elasticity of the spring 712 allows for fine-tuning of the distance between the two vertical limiting plates 714, thus meeting the anti-curling requirements of cast films of different thicknesses. Simultaneously, the output of the forward and reverse motor 704 drives the second conical disk 702 to rotate. The rotation of the second conical disk 702, in turn, drives the rotating rod 703 via the first conical disk 701. The rotating rod 703 then drives the two threaded rods 706 to rotate. The rotation of the threaded rod 706 drives two moving blocks 710 to move. The movement of the two moving blocks 710 drives the movement of two transmission blocks 711. The movement of the two transmission blocks 711 ultimately drives the movement of two horizontal limiting plates 714. By reasonably adjusting the horizontal distance between the two limiting plates 714, the purpose of preventing edge curling of cast films of different widths can be achieved, thereby improving the practicality of the equipment. This solves the problem that while the anti-curling effect is achieved through a blowing design, the cast film may still curl due to a certain degree of swaying during the blowing process, resulting in a poor anti-curling effect.

[0031] Two drive motors 6 are installed on the right side of the U-shaped plate 1. A transmission mechanism 8 is provided at both the front and rear of the mounting plate 4. The transmission mechanism 8 includes a second transmission rod 806, one end of which is fixedly connected to the output end of the drive motor 6. The other end of the second transmission rod 806 is fixedly connected to a second transmission wheel 802. A second gear plate 805 is fixedly sleeved on the outer wall of the second transmission rod 806. A first gear plate 803 is meshed with the top of the second gear plate 805. A first transmission rod 804 is fixedly connected inside the first gear plate 803. A first transmission wheel 801 is fixedly connected to the left side of the first transmission rod 804.

[0032] Specifically, such as Figure 1 , Figure 3 and Figure 6 As shown, in use, the output end of the drive motor 6 can drive the second drive rod 806 to rotate. The rotation of the second drive rod 806 drives the second drive wheel 802 to rotate, and the rotation of the second drive rod 806 drives the second gear disk 805 to rotate. The rotation of the second gear disk 805 drives the first drive rod 804 to rotate through the first gear disk 803. The rotation of the first drive rod 804 drives the first drive wheel 801 to rotate. The first drive wheel 801 and the second drive wheel 802 can rotate simultaneously, and the rotation directions of the first drive wheel 801 and the second drive wheel 802 are opposite. This can realize the conveying of the cast film. The simultaneous conveying of the two sets of first drive wheels 801 and second drive wheels 802 can not only effectively ensure the conveying effect of the cast film, but also make it difficult for the cast film to curl under the action of the first drive wheel 801 and the second drive wheel 802, thus improving the anti-curling effect.

[0033] Specifically, by controlling the start of two drive motors 6, and ensuring that the output power and rotation direction of the two drive motors 6 are the same, the purpose of conveying the cast film in the later stage can be achieved.

[0034] Working principle: In this application, the cast film is sequentially passed through the gap between the first and second drive wheels 801 and 802 at the front, between the four limiting plates 714, and between the first and second drive wheels 801 and 802 at the rear. Then, the drive motor 6 is started to transport the cast film. During this process, the edges of the cast film can be limited and smoothed by the cooperation between the four limiting plates 714, preventing the cast film from curling during movement. Furthermore, the elasticity of the spring 712 can restrain the two vertical limiting plates 714. The distance between 4 is finely adjusted to meet the anti-rolling requirements of cast films of different thicknesses. Simultaneously, the output of the forward and reverse motor 704 drives the second conical disk 702 to rotate. The rotation of the second conical disk 702 drives the first conical disk 701 to rotate the rotating rod 703. The rotation of the rotating rod 703 drives the two threaded rods 706 to rotate. The rotation of the two threaded rods 706 drives the two moving blocks 710 to move. The movement of the two moving blocks 710 drives the movement of the two transmission blocks 711, which ultimately drives... Two horizontal limiting plates 714 move, and by reasonably adjusting the horizontal distance between the two limiting plates 714, the purpose of preventing edge curling of cast films of different widths is achieved, thereby improving the practicality of the equipment. Secondly, when the output ends of the two drive motors 6 drive the second drive rod 806 to rotate, the rotation of the second drive rod 806 drives the second drive wheel 802 to rotate, and the rotation of the second drive rod 806 drives the second gear disc 805 to rotate. The rotation of the second gear disc 805 drives the first drive rod 80 through the first gear disc 803. 4. Rotation: The rotation of the first transmission rod 804 drives the first transmission wheel 801 to rotate. The first transmission wheel 801 and the second transmission wheel 802 can rotate simultaneously, and the rotation directions of the first transmission wheel 801 and the second transmission wheel 802 are opposite. This can realize the conveying of the cast film. The simultaneous conveying of the cast film by the two sets of first transmission wheels 801 and second transmission wheels 802 can not only effectively ensure the conveying effect of the cast film, but also make it difficult for the cast film to curl under the action of the first transmission wheel 801 and the second transmission wheel 802, thus improving the anti-curling effect.

[0035] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. At the same time, the electrical components mentioned in this application are all connected to an external power supply and control switch when in use. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, this utility model will not explain the control method and circuit connection in detail. Moreover, the external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. An anti-rolling device for a casting film machine, comprising a U-shaped plate (1), a limiting mechanism (7), and a transmission mechanism (8), characterized in that: The bottom of the U-shaped plate (1) is fixedly connected to a base plate (5), and support blocks (3) are fixedly connected to both sides of the bottom of the base plate (5). A control panel (2) is installed on the left side of the U-shaped plate (1), and two drive motors (6) are installed on the right side of the U-shaped plate (1). Two mounting plates (4) are installed at the center of the inner side of the U-shaped plate (1). A limit mechanism (7) is provided on the mounting plate (4), and a transmission mechanism (8) is provided at both the front and rear of the mounting plate (4).

2. The anti-rolling device for a casting film machine according to claim 1, characterized in that: The limiting mechanism (7) includes a forward and reverse motor (704), and the forward and reverse motor (704) is fixedly installed inside the mounting plate (4). The output end of the forward and reverse motor (704) is fixedly fitted with a second conical disc (702). The ends of the two second conical discs (702) that are far apart from each other are meshed with a first conical disc (701). A rotating rod (703) is fixedly connected inside the first conical disc (701).

3. The anti-rolling device for a casting film machine according to claim 2, characterized in that: Both sides of the rotating rod (703) are fixedly connected with threaded rods (706). The outer wall of the threaded rod (706) is threadedly connected with a moving block (710). A crossbar (705) is movably arranged through the outer wall of the moving block (710). A transmission block (711) is fixedly connected to the end of the two moving blocks (710) that are close to each other. A fixed cavity (708) is provided inside the transmission block (711). A connecting fixed groove (707) is opened at the end of the two fixed cavities (708) that are far apart from each other.

4. The anti-rolling device for a casting film machine according to claim 3, characterized in that: A buffer rod (709) is movably disposed inside the fixed cavity (708), and one end of the buffer rod (709) passes through the fixed cavity (708) and extends to the outside of the fixed cavity (708). A limit plate (714) is fixedly connected to the close ends of the two buffer rods (709).

5. The anti-rolling device for a casting film machine according to claim 4, characterized in that: A fixing plate (713) is fixedly sleeved on the outer wall of the middle end of the buffer rod (709), and a spring (712) is fixedly connected to the ends of the two fixing plates (713) that are far apart from each other.

6. The anti-rolling device for a casting film machine according to claim 1, characterized in that: The transmission mechanism (8) includes a second transmission rod (806), one end of which is fixedly connected to the output end of the transmission motor (6), and the other end of which is fixedly connected to a second transmission wheel (802). A second gear disc (805) is fixedly sleeved on the outer wall of the second transmission rod (806).

7. The anti-rolling device for a casting film machine according to claim 6, characterized in that: The top of the second gear disk (805) is engaged with the first gear disk (803), the first gear disk (803) is fixedly connected to the inside of the first gear disk (803), and the left side of the first transmission rod (804) is fixedly connected to the first transmission wheel (801).

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