Bidirectional stretching device for high-performance hydrophilic film

Abstract

The utility model provides a two-way stretching device of a high-performance hydrophilic film, which relates to the technical field of film processing and comprises a processing machine tool, a support plate is fixedly mounted on one side of the middle of the upper end of the processing machine tool, an air cylinder is fixedly mounted in the middle of the upper end of the support plate, and an inner ring is fixedly mounted at the output end of the air cylinder. Connecting rods are fixedly installed at the two ends of the outer side of the inner ring correspondingly, outer rings are fixedly installed at one ends of the two connecting rods correspondingly, a gear ring is rotationally installed on the upper portion of the middle of each outer ring, transmission gears are rotationally installed on one sides of the two connecting rods correspondingly, and a motor is fixedly installed at the upper end of one transmission gear. The transmission gear is meshed with the gear ring, and sliding grooves are formed in the two sides of the middle of the lower end of the inner ring and the two sides of the middle of the lower end of the outer ring. The utility model solves the problems that the traditional two-way stretching equipment cannot accurately adjust the stretching force according to the characteristics of the film, and the stretching parameters are inconvenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of membrane processing technology, and in particular to a biaxial stretching device for high-performance hydrophilic membranes. Background Technology

[0002] High-performance hydrophilic membranes are functional membrane materials with excellent hydrophilic properties and a variety of other superior characteristics. They typically possess high hydrophilicity, good chemical stability, and high mechanical strength. They can quickly come into contact with water and allow water to spread and permeate on the membrane surface. They have a low water contact angle, allowing water to pass through the membrane pores rapidly. They can resist the erosion of various corrosive media such as strong acids, strong alkalis, and organic solvents, and have high tensile and flexural strength. They can maintain the integrity of the membrane structure even under complex working conditions such as high pressure and high flow rate.

[0003] In existing technologies, high-performance hydrophilic membranes are typically stretched after production to optimize other properties. Traditional biaxial stretching equipment usually employs mechanical or hydraulic transmission, stretching along two mutually perpendicular fixed directions. This method offers relatively coarse adjustment of the stretching force, making precise control difficult. When processing high-performance hydrophilic membranes that are extremely sensitive to stretching forces, even minute deviations in stretching force can significantly impact membrane performance. For example, for ultrathin hydrophilic membranes or those with special molecular structures, traditional transmission methods cannot precisely adjust the stretching force according to the membrane's characteristics, thus limiting further performance improvements. Furthermore, once the equipment is installed and commissioned, its stretching direction and basic parameters are relatively fixed, making rapid adjustments difficult to meet different production needs. Therefore, designing a system that can achieve precise control of the stretching force while also allowing adjustment of stretching parameters such as length has become a key issue in high-performance hydrophilic membrane stretching technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-performance biaxial stretching device for hydrophilic membranes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-performance hydrophilic membrane biaxial stretching device, comprising: a processing machine tool, a support plate fixedly installed on one side of the upper middle portion of the processing machine tool, a cylinder fixedly installed on the middle portion of the upper middle portion of the support plate, an inner ring fixedly installed at the output end of the cylinder, connecting rods fixedly installed at both ends of the outer side of the inner ring, an outer ring fixedly installed at one end of each of the two connecting rods, a gear ring rotatably installed above the middle portion of the outer ring, a transmission gear rotatably installed on one side of each of the two connecting rods, a motor fixedly installed at the upper end of one of the transmission gears, the transmission gear meshing with the gear ring, sliding grooves opened on both sides of the lower middle portion of the inner and outer rings, sliding plates slidably engaged in the middle portion of each of the two sets of sliding grooves, a toothed plate fixedly installed on one side of each of the two sliding plates, the toothed plate meshing with the transmission gear, a fixing plate threadedly connected to the ends of each of the two sliding plates, and a pressure roller rotatably installed at the lower ends of each of the two fixing plates.

[0006] In a preferred embodiment, limit plates are fixedly installed on both sides of the upper middle part of the machine tool, and a center block is fixedly installed in the middle of the upper middle part of the machine tool. The fixed plate can be snapped into the middle of the two limit plates.

[0007] In a preferred embodiment, support legs are fixedly installed on both sides of the lower middle part of the machine tool.

[0008] In a preferred embodiment, multiple slots are evenly provided at the ends of the two slide plates, and a lower plate is fixedly installed at the middle of the upper end of the fixing plate by screws.

[0009] In a preferred embodiment, an upper retaining plate is engaged in the middle of the slot, and both the upper and lower retaining plates have screw holes in their middle sections, with screws threaded into the middle sections of the upper and lower retaining plates.

[0010] In a preferred embodiment, the diameter of the upper end of the screw is larger than the diameter of the plurality of slots.

[0011] In a preferred embodiment, the gear ring meshes above the middle of the transmission gear, and the gear plate meshes below the middle of the transmission gear.

[0012] In a preferred embodiment, the motor is fixedly mounted on one side of the outer ring, and the inner ring is located in the middle of the outer ring.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In use, when stretching the high-performance hydrophilic membrane, the inner and outer rings are moved downward by controlling the cylinder until the pressure rollers on both sides press against the two ends of the membrane. Then, the motor is started, and the transmission gear drives the gear ring and the transmission gear at the other end to rotate synchronously. The transmission gear drives the slide plate to move outward along the slide groove through the toothed plate, realizing bidirectional stretching of the high-performance hydrophilic membrane. The slide plate slides in the slide groove, which can precisely stretch local areas of the membrane. The motor drive is driven by gear transmission. Compared with traditional mechanical or hydraulic transmission, it can accurately control the speed and torque, and finely adjust the stretching force, allowing users to adjust it according to the material, thickness and performance requirements of the high-performance hydrophilic membrane, so as to achieve the best stretching effect.

[0015] 2. When using this utility model, the operator can adjust the distance between the pressure rollers below the two fixed plates as needed, unscrew the fixing screws in the upper and lower clamping plates to remove the limitation on the fixed plates and pressure rollers, and then fix them in the corresponding slots and fix them with screws. This makes it convenient to adjust the stretching data of the device, and can stretch hydrophilic films of different lengths, making it more practical. Attached Figure Description

[0016] Figure 1 A schematic diagram of the external structure of a biaxial stretching device for a high-performance hydrophilic membrane provided by this utility model.

[0017] Figure 2 A schematic diagram showing the connection relationship between the inner and outer rings of a biaxial stretching device for a high-performance hydrophilic membrane provided by this utility model.

[0018] Figure 3 A schematic diagram showing the connection relationship between the slide plate, inner ring, and outer ring of a biaxial stretching device for a high-performance hydrophilic membrane provided by this utility model.

[0019] Figure 4 A schematic diagram showing the connection relationship between the slide plate and the fixed plate of a biaxial stretching device for a high-performance hydrophilic membrane provided by this utility model.

[0020] Legend:

[0021] 1. Machine tool; 11. Support leg; 12. Limiting plate; 13. Center block; 14. Support plate; 15. Cylinder; 2. Inner ring; 21. Outer ring; 22. Connecting rod; 23. Transmission gear; 24. Motor; 25. Gear ring; 26. Slide groove; 27. Slide plate; 28. Gear plate; 29. ​​Fixing plate; 30. Pressure roller; 31. Slot; 32. Upper clamping plate; 33. Lower clamping plate; 34. Screw hole; 35. Screw. Detailed Implementation

[0022] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0023] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0024] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Example 1: As Figure 1-4As shown, this utility model provides a technical solution: a biaxial stretching device for a high-performance hydrophilic membrane, comprising: a processing machine tool 1, a support plate 14 fixedly installed on one side of the upper middle part of the processing machine tool 1, a cylinder 15 fixedly installed on the middle part of the upper end of the support plate 14, an inner ring 2 fixedly installed on the output end of the cylinder 15, connecting rods 22 fixedly installed on both ends of the outer side of the inner ring 2, an outer ring 21 fixedly installed on one end of each connecting rod 22, a gear ring 25 rotatably installed on the upper part of the middle of the outer ring 21, a transmission gear 23 rotatably installed on one side of each connecting rod 22, a motor 24 fixedly installed on the upper end of one of the transmission gears 23, the transmission gear 23 meshing with the gear ring 25, and sliding grooves 26 are provided on both sides of the lower middle part of the inner ring 2 and the outer ring 21, and sliding plates 27 are slidably engaged in the middle of the two sets of sliding grooves 26. A toothed plate 28 is fixedly installed on one side, and the toothed plate 28 meshes with the transmission gear 23. The ends of the two slide plates 27 are threadedly connected to the fixing plates 29. The lower ends of the two fixing plates 29 are rotatably installed with pressure rollers 30. Multiple slots 31 are evenly opened at the ends of the two slide plates 27. The middle of the upper end of the fixing plate 29 is fixedly installed with a lower clamping plate 33 by screws 35. The middle of the slots 31 is clamped with an upper clamping plate 32. The middle of the upper clamping plate 32 and the lower clamping plate 33 are both provided with screw holes 34. The middle of the upper clamping plate 32 and the lower clamping plate 33 is threadedly connected with screws 35. The diameter of the upper end of the screws 35 is larger than the diameter of the multiple slots 31. The gear ring 25 meshes with the upper part of the middle of the transmission gear 23, and the toothed plate 28 meshes with the lower part of the middle of the transmission gear 23. The motor 24 is fixedly installed on one side of the outer ring 21, and the inner ring 2 is located in the middle of the outer ring 21.

[0028] In this embodiment, when stretching the high-performance hydrophilic membrane, the inner ring 2 and outer ring 21 are moved downward by the control cylinder 15 until the pressure rollers 30 below the two fixed plates 29 press on both ends of the high-performance hydrophilic membrane. At this time, the motor 24 is started to drive the transmission gear 23 at the output end to rotate, thereby driving the gear ring 25 to rotate. During the rotation of the gear ring 25, it can drive the transmission gear 23 at the other end to rotate synchronously. At the same time, the transmission gear 23 will also drive the slide plates 27 at both ends to move outward along the slide groove 26 through the toothed plate 28, thereby driving the high-performance hydrophilic membrane to be stretched in both directions. The slide plates 27 in the device slide in the slide groove 26. The movement is controlled by the meshing of the toothed plate 28 and the transmission gear 23. Precise stretching can be performed on local areas of the hydrophilic membrane. At the same time, the motor 24 drives the transmission gear 23 to rotate, and the force is transmitted through the gear transmission. Compared to traditional biaxial stretching equipment that uses mechanical or hydraulic transmission to provide tensile force, the motor 24 drives the device to more precisely control the speed and torque, thereby achieving fine adjustment of the tensile force. This allows users to precisely adjust the tensile force according to factors such as the material, thickness, and required performance of the hydrophilic membrane to achieve the best stretching effect. The operator can also adjust the distance between the pressure rollers 30 below the two fixed plates 29. Simply unscrew the screws 35 used for fixing from the upper clamping plate 32 and the lower clamping plate 33 to remove their restriction on the fixed plates 29 and the pressure rollers 30 below them, and then fix them in the corresponding slots 31 and secure them with screws 35. This makes the stretching data of the device easy to adjust, enabling the stretching of hydrophilic membranes of different lengths and providing greater practicality.

[0029] Example 2: As Figure 1 As shown, limit plates 12 are fixedly installed on both sides of the upper middle part of the machine tool 1, a center block 13 is fixedly installed in the middle of the upper part of the machine tool 1, and a fixing plate 29 can be snapped into the middle of the two limit plates 12. Support legs 11 are fixedly installed on both sides of the lower middle part of the machine tool 1.

[0030] In this embodiment, before stretching the high-performance hydrophilic membrane, the high-performance hydrophilic membrane is first laid flat in the middle of the two limiting plates 12 above the processing machine tool 1, and the center position of the high-performance hydrophilic membrane is adjusted with reference to the center block 13 to ensure that the two ends of the high-performance hydrophilic membrane are located below the two pressure rollers 30 above.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims. Under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0032] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A biaxial stretching device for a high-performance hydrophilic membrane, comprising a processing machine (1), wherein a support plate (14) is fixedly installed on one side of the upper middle portion of the processing machine (1), a cylinder (15) is fixedly installed on the middle portion of the upper end of the support plate (14), and an inner ring (2) is fixedly installed on the output end of the cylinder (15), characterized in that: Both ends outside the inner ring (2) are fixedly installed with connecting rods (22), one end of two connecting rods (22) is fixedly installed with an outer ring (21), the upper side of the middle of the outer ring (21) is rotatably installed with a gear ring (25), two connecting rods (22) are rotatably installed with transmission gears (23) on one side, the upper end of one transmission gear (23) is fixedly installed with a motor (24), the transmission gear (23) is engaged between the gear ring (25), the lower end of the middle of the inner ring (2) and the outer ring (21) is provided with a sliding groove (26) on both sides, the middle of two groups of sliding grooves (26) is slidably connected with a sliding plate (27), one side of two sliding plates (27) is fixedly installed with a toothed plate (28), the toothed plate (28) and the transmission gear (23) are engaged, the end of two sliding plates (27) is threadedly connected with a fixed plate (29), the lower end of two fixed plates (29) is rotatably installed with a compression roller (30).

2. A biaxial stretching apparatus for high performance hydrophilic membranes according to claim 1, characterized in that: The middle of the upper end of the machining tool (1) is fixedly installed with a limiting plate (12), the middle of the upper end of the machining tool (1) is fixedly installed with a center block (13), the fixed plate (29) can be connected to the middle of two limiting plates (12).

3. A biaxial stretching apparatus for high performance hydrophilic membranes according to claim 2, characterized in that: The middle of the lower end of the machining tool (1) is fixedly installed with a supporting leg (11).

4. The apparatus according to claim 2, wherein: The end of two sliding plates (27) is uniformly provided with a plurality of insertion grooves (31), the middle of the upper end of the fixed plate (29) is fixedly installed with a lower clamping plate (33) through a screw (35).

5. A biaxial stretching apparatus for high performance hydrophilic membranes according to claim 4, characterized in that: The middle of the insertion groove (31) is connected with an upper clamping plate (32), the middle of the upper clamping plate (32) and the lower clamping plate (33) is provided with a screw hole (34), the middle of the upper clamping plate (32) and the lower clamping plate (33) is threadedly connected with a screw (35).

6. A biaxial stretching apparatus for high performance hydrophilic membranes according to claim 5, characterized in that: The diameter of the upper end of the screw (35) is greater than the diameter of a plurality of insertion grooves (31).

7. The apparatus according to claim 1, wherein: The gear ring (25) is engaged above the middle of the transmission gear (23), the toothed plate (28) is engaged below the middle of the transmission gear (23).

8. The apparatus according to claim 1, wherein: The motor (24) is fixedly installed on one side of the outer ring (21), the inner ring (2) is located in the middle of the outer ring (21). The middle of the lower end of the machining tool (1) is fixedly installed with a supporting leg (11).

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