Casting machine compression roller for high-speed production of breathable film

Abstract

The utility model belongs to the technical field of casting machine compression rollers, and particularly relates to a casting machine compression roller for high-speed production of a breathable film, which comprises a compression roller assembly, the compression roller assembly comprises a compression roller body, a counterweight column is arranged at the center of the inside of the compression roller body, a cooling cavity is formed between the compression roller body and the counterweight column, and a flow guide spiral is arranged in the cooling cavity. Connecting pipes are fixedly installed at the circle centers of the left end and the right end of the compression roller body correspondingly, the outer side of the connecting pipe on the left side is fixedly sleeved with a lower gear, rotating joints are installed at the ends, away from the compression roller body, of the two connecting pipes correspondingly, hoses are fixedly connected to the other ends of the rotating joints, and the hose on the left side is a water inlet pipe. The hose on the right side is a drainage pipe. According to the utility model, the flow path of cooling water in the compression roller can be effectively increased, the heating time is prolonged, heat can be quickly and effectively absorbed during high-speed production of a thin film, the cooling effect is better, and the condition of water waste can be effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of casting machine pressure roller technology, and in particular relates to a casting machine pressure roller for high-speed production of breathable film. Background Technology

[0002] Casting machines are widely used in the production of various plastic films. Among them, the pressure roller is an important component of the casting machine. The main function of the pressure roller is to calender molten plastic material into a film of a certain thickness.

[0003] Chinese utility model patent CN204566516U discloses a casting machine pressure roller for high-speed production of breathable film. This roller is designed to adapt to the printing process during high-speed casting of breathable film while ensuring no damage to the film. Furthermore, the roller can assist in cooling the film during the printing process, preventing damage and aging due to overheating, and avoiding quality degradation caused by insufficient heat dissipation during high-speed production. However, during cooling, the cooling water flow rate is too fast, resulting in insufficient heat absorption and failing to meet the demands of high-speed film production. This also leads to significant water waste and low efficiency. Additionally, when producing plastic film in a casting machine, the thickness and uniformity of the film need to be controlled by adjusting the roller pressure. However, most current casting machine pressure rollers lack height adjustment functionality, and pressure adjustment remains inconvenient.

[0004] Therefore, there is an urgent need to improve the existing casting machine pressure rollers for high-speed production of breathable films and to provide a casting machine pressure roller with better cooling effect. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-speed production pressure roller for breathable films that is reasonably designed, simple in structure, quick and convenient in pressure adjustment, and has better and more complete cooling and heat absorption effects, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-speed casting machine pressure roller for producing breathable membranes includes a pressure roller assembly. The pressure roller assembly includes a pressure roller body, a counterweight column at the center of the pressure roller body, and a cooling chamber formed between the pressure roller body and the counterweight column. A guide spiral is provided in the cooling chamber. Connecting pipes are fixedly installed at the center of both ends of the pressure roller body. A lower gear is fixedly sleeved on the outside of the left connecting pipe. Rotary joints are installed at the ends of both connecting pipes away from the pressure roller body. The other ends of the rotary joints are fixedly connected to hoses. The hose on the left is a water inlet pipe, and the hose on the right is a drain pipe.

[0008] Preferably, the guide spiral is sleeved on the outside of the counterweight column and the two are of equal length, and the pressure roller body and the counterweight column are both fixedly connected to the guide spiral.

[0009] Preferably, a movable plate is rotatably sleeved on the outer side of both connecting pipes via bearings. A motor is fixedly installed on the outer wall of the movable plate on the left side, and an upper gear is fixedly connected to the output end of the motor. A lower gear is fixedly sleeved on the outer side of the connecting pipe on the left side, and the lower gear meshes with the upper gear.

[0010] Preferably, the upper part of each of the two movable plates is threaded with a trapezoidal lead screw, and the top of each of the two trapezoidal lead screws is fixedly connected with a worm gear. Each of the two worm gears is driven to rotate by a set of height adjustment components to control the lifting and lowering of the two movable plates.

[0011] Preferably, the threads on the outer surfaces of the two trapezoidal lead screws are in the same direction, and the two trapezoidal lead screws rotate synchronously in the same direction through the height adjustment component.

[0012] Preferably, the height adjustment component includes a positioning plate, a worm gear, and helical teeth. A worm gear is installed between the two positioning plates, and both ends of the worm gear are provided with helical teeth in the same direction. The two helical teeth mesh with the two worm wheels respectively.

[0013] Preferably, the right end of the worm is connected to the bearing of the right-side positioning plate, the left end of the worm passes through the left-side positioning plate and is rotatably connected to it, and a positioning bolt is threaded onto the top outer wall of the left-side positioning plate.

[0014] Preferably, the two movable plates are respectively located inside the two fixed brackets at the left and right ends of the casting machine body, and the inner sides of the two fixed brackets are provided with sliding grooves to slide and connect with the movable plates; the two trapezoidal lead screws are respectively bearing mounted on the top of the two fixed brackets; the two positioning plates are respectively fixedly installed on the outer wall of the top of the two fixed brackets on opposite sides.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, a cooling chamber for cooling water flow is formed between the pressure roller body and the counterweight column. A guide spiral is provided in the cooling chamber, so that when the cooling water enters the cooling chamber, it can flow in a spiral manner according to the guidance of the guide spiral. This can effectively increase the flow of cooling water inside the pressure roller and increase the heating time. In high-speed film production, this is conducive to the rapid and effective absorption of heat, resulting in better cooling effect and effectively avoiding water waste.

[0017] This invention can be adapted to the actual production needs of thin films by rotating a worm gear and using the helical teeth at both ends of the worm gear to control two worm wheels to drive two trapezoidal lead screws to rotate synchronously in the same direction. This allows for the stable and synchronous lifting and lowering of two movable plates and pressure roller assemblies along the slide groove. By stably adjusting the height of the pressure roller body, the pressure of the thin film can be conveniently controlled, facilitating the control of the thickness and uniformity of the thin film. Moreover, it is easy to operate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings are described as follows:

[0019] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0021] Figure 3 This is one of the schematic diagrams showing the installation state of this utility model;

[0022] Figure 4 This is the second schematic diagram of the installation state of this utility model;

[0023] In the picture:

[0024] 1. Casting machine body; 2. Fixed bracket; 3. Slide groove; 4. Movable plate; 5. Trapezoidal lead screw; 6. Worm gear; 7. Height adjustment assembly; 71. Positioning plate; 72. Worm gear; 73. Helical gear; 74. Positioning bolt; 8. Pressure roller assembly; 81. Pressure roller body; 82. Counterweight column; 83. Guide spiral; 84. Connecting pipe; 85. Rotary joint; 86. Hose; 87. Lower gear; 9. Motor; 10. Upper gear. Detailed Implementation

[0025] The embodiments described below are merely some embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings: Example 1

[0026] like Figure 1As shown, the high-speed production of breathable film casting machine pressure roller of this utility model includes a pressure roller assembly 8, which includes a pressure roller body 81 and a counterweight column 82. The counterweight column 82 is provided at the center of the inside of the pressure roller body 81, and a cooling chamber is formed between the pressure roller body 81 and the counterweight column 82. A guide spiral 83 is provided in the cooling chamber. Connecting pipes 84 are fixedly installed at the center of both ends of the pressure roller body 81. A lower gear 87 is fixedly sleeved on the outside of the left connecting pipe 84. Rotary joints 85 are installed at the ends of the two connecting pipes 84 away from the pressure roller body 81. The other end of the rotary joint 85 is fixedly connected to a hose 86. The left hose 86 is a water inlet pipe, and the right hose 86 is a drain pipe.

[0027] As a preferred embodiment, based on the above structure, the guide spiral 83 is further sleeved on the outside of the counterweight column 82 and the two are of equal length, and the pressure roller body 81 and the counterweight column 82 are both fixedly connected to the guide spiral 83.

[0028] In this embodiment, when the cooling water enters the cooling chamber, it can flow in a spiral manner according to the guidance of the flow guide spiral 83, which can effectively increase the flow of cooling water inside the pressure roller and increase the heating time. Therefore, during high-speed film production, it is beneficial to absorb heat quickly and effectively, resulting in better cooling effect. Example 2

[0029] like Figure 2-4 In order to better control the rotation of the pressure roller body 81 so as to squeeze the film, as a preferred embodiment, based on the structure of the above embodiment 1, the outer sides of the two connecting pipes 84 are further provided with movable plates 4 through bearings. A motor 9 is fixedly installed on the outer wall of the left movable plate 4, and the output end of the motor 9 is fixedly connected to the upper gear 10. A lower gear 87 is fixedly sleeved on the outer side of the left connecting pipe 84, and the lower gear 87 meshes with the upper gear 10.

[0030] In order to adjust the installation height of the pressure roller body 81 so as to adjust the pressure exerted by the pressure roller body 81 on the film, as a preferred embodiment, based on the above structure, the upper part of the two movable plates 4 is further threaded with trapezoidal screws 5, and the top of the two trapezoidal screws 5 is fixedly connected with worm gears 6. The two worm gears 6 are driven to rotate by a set of height adjustment components 7 to control the lifting and lowering of the two movable plates 4.

[0031] Based on the above structure, preferably, the thread directions on the outer surfaces of the two trapezoidal lead screws 5 are the same, and the two trapezoidal lead screws 5 rotate synchronously in the same direction through the height adjustment component 7.

[0032] As a preferred embodiment, based on the above structure, the height adjustment component 7 further includes a positioning plate 71, a worm 72 and a helical tooth 73. The worm 72 is installed between the two positioning plates 71. Both ends of the worm 72 are provided with helical teeth 73 in the same direction. The two helical teeth 73 mesh with the two worm wheels 6 respectively.

[0033] As a preferred embodiment, based on the above structure, the right end of the worm 72 is further connected to the right positioning plate 71 by a bearing, the left end of the worm 72 passes through the left positioning plate 71 and is rotatably connected to it, and a positioning bolt 74 is threaded on the top outer wall of the left positioning plate 71.

[0034] In this embodiment, the helical teeth 73 at both ends of the worm 72 facilitate the control of the two worm wheels 6 to drive the two trapezoidal screws 5 to rotate synchronously, which facilitates the stable lifting and lowering of the pressure roller assembly 8 and the uniform pressure applied to the film.

[0035] like Figure 3 or Figure 4 As shown, in a preferred embodiment, during installation, the pressure roller assembly 8 is mounted between two movable plates 4. The two movable plates 4 are slidably located in the grooves 3 opened on the inner side of the two fixed supports 2. The two fixed supports 2 are symmetrically arranged and fixedly installed above the left and right ends of the casting machine body 1, so that the pressure roller assembly 8 can be easily driven to rise and fall by the two movable plates 4 through the fixed supports 2 and the grooves 3 opened on their inner sides. The trapezoidal screw 5 is rotatably mounted on the top of the fixed support 2 through the bearing. The two positioning plates 71 are fixedly installed on the outer wall of the top of the two fixed supports 2 on opposite sides.

[0036] The working principle of this utility model is as follows:

[0037] In use, the pressure of the roller assembly 8 is first adjusted according to the actual needs of film production. The worm 72 is manually rotated, and the spiral teeth 73 at both ends of the worm 72 control the two worm wheels 6 to drive the two trapezoidal screws 5 to rotate synchronously in the same direction. This allows the two movable plates 4 and the roller assembly 8 to be stably and synchronously raised and lowered along the slide groove 3. By stably adjusting the height of the roller body 81, the pressure of the film can be conveniently controlled, making it easy to control the thickness and uniformity of the film. After the pressure of the roller is adjusted, the positioning bolts 74 can be tightened to position the worm 72 against the ground, ensuring the stability of the height of the roller body 81.

[0038] During film production, the left hose 86 can be connected to the water supply end of an external water pump, and the right hose 86 can be connected to the drain pipe. Then, the motor 9 is started to control the upper gear 10 to start rotating, and the lower gear 87, which meshes with the upper gear 10, controls the connecting pipe 84 to drive the pressure roller body 81 to start rotating at a uniform speed to squeeze the film. The external water pump is turned on, so that cooling water is input into the pressure roller body 81 through the left hose 86, the rotary joint 85 and the connecting pipe 84. When the cooling water flows in the cooling chamber formed between the pressure roller body 81 and the counterweight column 82, the cooling water can flow in a spiral manner according to the guidance of the flow guide spiral 83, which can effectively increase the flow of cooling water inside the pressure roller and increase the heating time. During high-speed film production, it is conducive to the rapid and effective absorption of heat, resulting in better cooling effect and effectively avoiding water waste.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any equivalent changes, modifications, substitutions, and variations made by those skilled in the art based on the concept of this utility model and on the basis of existing technology through logical analysis, reasoning, or limited experiments shall be within the scope of protection defined by the claims.

Claims

1. A pressure roller for a high-speed production line of breathable membrane casting machine, comprising a pressure roller assembly (8), characterized in that: The pressure roller assembly (8) includes a pressure roller body (81), a counterweight column (82) is provided at the center of the pressure roller body (81), a cooling chamber is formed between the pressure roller body (81) and the counterweight column (82), a guide spiral (83) is provided in the cooling chamber, and connecting pipes (84) are fixedly installed at the center of the left and right ends of the pressure roller body (81). Rotary joints (85) are installed at the ends of the two connecting pipes (84) away from the pressure roller body (81), and a hose (86) is fixedly connected to the other end of the rotary joint (85). The hose (86) on the left is a water inlet pipe, and the hose (86) on the right is a drain pipe.

2. The pressure roller for a high-speed production line of breathable membrane as described in claim 1, characterized in that: The guide spiral (83) is sleeved on the outside of the counterweight column (82) and the two are of equal length. The pressure roller body (81) and the counterweight column (82) are both fixedly connected to the guide spiral (83).

3. The pressure roller for a high-speed production line of breathable membrane as described in claim 1, characterized in that: Both connecting pipes (84) have a movable plate (4) mounted on their outer sides via bearings. A motor (9) is fixedly installed on the outer wall of the movable plate (4) on the left side. An upper gear (10) is fixedly connected to the output end of the motor (9). A lower gear (87) is fixedly mounted on the outer side of the connecting pipe (84) on the left side. The lower gear (87) meshes with the upper gear (10).

4. A casting machine pressure roller for high-speed production of breathable membranes according to claim 3, characterized in that: Both movable plates (4) are threaded with trapezoidal lead screws (5) at their upper parts, and worm gears (6) are fixedly connected to the top of both trapezoidal lead screws (5). Both worm gears (6) are driven to rotate by a set of height adjustment components (7) to control the lifting and lowering of the two movable plates (4).

5. A casting machine pressure roller for high-speed production of breathable membranes according to claim 4, characterized in that: The threads on the outer surfaces of the two trapezoidal lead screws (5) are in the same direction, and the two trapezoidal lead screws (5) rotate synchronously in the same direction through the height adjustment component (7).

6. A casting machine pressure roller for high-speed production of breathable membranes according to claim 5, characterized in that: The height adjustment component (7) includes a positioning plate (71), a worm (72) and a helical tooth (73). A worm (72) is installed between the two positioning plates (71). Both ends of the worm (72) are provided with helical teeth (73) in the same direction. The two helical teeth (73) mesh with the two worm wheels (6) respectively.

7. A casting machine pressure roller for high-speed production of breathable membranes according to claim 6, characterized in that: The right end of the worm (72) is connected to the right side positioning plate (71) by a bearing, and the left end of the worm (72) passes through the left side positioning plate (71) and is rotatably connected to it. The top outer wall of the left side positioning plate (71) is threaded with a positioning bolt (74).

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