Medical TPU (thermoplastic polyurethane) film stretching and flattening equipment

Abstract

The utility model relates to the technical field of processing equipment, and discloses medical TPU (thermoplastic polyurethane) film stretching and flattening equipment which comprises a shell, two rotating rods are rotatably connected to two sides of the shell, transmission rods are rotatably connected to the rear ends of the two rotating rods, fixed blocks are fixedly connected to the close sides of the two transmission rods, and the fixed blocks are fixedly connected to the two sides of the shell. Two fixed blocks are arranged in the shell, adjusting rollers are fixedly connected to the sides, close to each other, of the two fixed blocks, first sliding blocks are rotatably connected to the rear ends of the two transmission rods, a processing film is slidably connected to the interior of the shell, a replacement assembly used for rapidly replacing the TRU roll film is arranged in the shell, and air cylinders are fixedly connected to the two sides of the shell. According to the utility model, the position of the adjusting roller is adjusted, so that the tension during processing is quickly and controllably adjusted, a film is ensured to be stressed uniformly when being stretched, the condition of local excessive stretching or insufficient stretching is avoided, and the flatness and the dimensional accuracy after stretching are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a medical TPU film stretching and flattening device. Background Art

[0002] In medical applications, medical TPU films need to have accurate size, uniform thickness and a flat surface to meet the production requirements of various medical products. Medical TPU films are waterproof, breathable, have good biocompatibility, high elasticity, softness and antibacterial properties. These properties make it widely used in the medical field, such as medical protective gear fabrics, medical tapes, medical antibacterial pads, flap pads, medical mattresses and TPU composite films. Due to its excellent performance and special application scenarios, the quality requirements of the film are extremely high. During the production and processing process, it is necessary to ensure the flatness of the film and the performance stability after stretching.

[0003] In the actual production process, the tension control of TPU film is very important, which directly affects the quality and effect of TPU film in various processing links such as stretching and flattening. However, some TPU film processing devices are unable to quickly adjust the tension to adapt to different processing requirements. When the production process requires adjusting the tension of TPU film from one value to another in a short time to meet the specific requirements of subsequent processes such as precise stretching or flattening, these devices cannot respond accurately in time, which makes the TPU film unevenly stressed during the processing, leading to a series of quality problems. Therefore, medical TPU film stretching and flattening equipment is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a medical TPU film stretching and flattening device, which aims to improve the problem in the existing technology that the tension cannot be quickly adjusted to adapt to different processing requirements.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] Medical TPU film stretching and flattening equipment, including a shell, two rotating rods are rotatably connected to both sides of the shell, the rear ends of the two rotating rods are rotatably connected to the transmission rod, the adjacent sides of the two transmission rods are fixedly connected to the fixed blocks, the adjacent sides of the two fixed blocks are fixedly connected to the adjustment rollers, the rear ends of the two transmission rods are rotatably connected to the sliding block 1, the interior of the shell is slidably connected to the processing film, and the interior of the shell is provided with a replacement component for quickly replacing the TPU roll film;

[0007] As a further description of the above technical solution:

[0008] Cylinders are fixedly connected to both sides of the housing, and the driving ends of the two cylinders are fixedly connected to the rear ends of the two sliding blocks.

[0009] As a further description of the above technical solution:

[0010] Notches are provided on both sides of the housing, and the outer portions of the two sliding blocks are slidably connected to the inner portions of the notches;

[0011] As a further description of the above technical solution:

[0012] The interior of the shell is rotatably connected to a preheating zone, the interior of the shell is rotatably connected to a stretching zone, and a sliding entrance is opened inside the shell;

[0013] As a further description of the above technical solution:

[0014] The interior of the shell is rotatably connected to a heat setting area, the interior of the shell is rotatably connected to a cooling area, and a sliding outlet is opened inside the shell;

[0015] As a further description of the above technical solution:

[0016] The replacement assembly includes a second sliding block, the outer portion of which is slidably connected to the interior of the housing, a telescopic spring fixedly connected to the rear end of the second sliding block, a telescopic block sleeved inside the telescopic spring, and a handle fixedly connected to the side of the second sliding block away from the processing film;

[0017] As a further description of the above technical solution:

[0018] The outer portion of the telescopic block is slidably connected to the inner portion of the second sliding block, and the rear end of the telescopic block is fixedly connected to the inner portion of the housing;

[0019] As a further description of the above technical solution:

[0020] A sliding groove is provided inside the shell, the outer portion of the handle is slidably connected to the inside of the sliding groove, and the other end of the telescopic spring is fixedly connected to the inside of the shell.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the transmission rod drives the rotating rod to rotate, so that the position of the adjusting roller can be adjusted, thereby quickly and controllably adjusting the tension during processing, ensuring that the film is evenly stressed when stretched, avoiding local over-stretching or under-stretching, and thus ensuring flatness and dimensional accuracy after stretching.

[0023] 2. In the present invention, the sliding block 2 slides inside the shell, so that the processing film can be supported and released in a controllable manner, and the processing film can be quickly replaced. The simple operation steps save the preparation time for processing, and are suitable for large-batch processing needs, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of the medical TPU film stretching and flattening equipment proposed in the utility model;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a structural schematic diagram of the sliding inlet of the medical TPU film stretching and flattening equipment proposed in the utility model;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0028] Legend:

[0029] 1. Housing; 2. Rotating rod; 3. Transmission rod; 4. Sliding block 1; 5. Fixed block; 6. Adjusting roller; 7. Cylinder; 8. Processing film; 9. Preheating zone; 10. Stretching zone; 11. Heat setting zone; 12. Cooling zone; 13. Sliding block 2; 14. Telescopic spring; 15. Telescopic block; 16. Handle; 17. Sliding entrance; 18. Sliding exit; 19. Slideway. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figures 1 to 2, the utility model provides an embodiment: a medical TPU film stretching and flattening device, including a shell 1. The shell 1 can be made of high-quality stainless steel. This material has good corrosion resistance and durability, and can provide stable support for various components inside the device, ensuring that the device remains stable and reliable during long-term operation. Two rotating rods 2 are rotatably connected to both sides of the shell 1. The rotating rods 2 are made of high-strength alloy steel. They have excellent strength and toughness, can withstand various forces generated during the operation of the equipment, and can ensure the smoothness of the rotation process, so that the transmission link of the equipment can proceed stably. The rear ends of the two rotating rods 2 are rotatably connected to the transmission rod 3. The transmission rod 3 is also made of high-strength alloy steel, which enables it to complete tasks accurately and efficiently when transmitting power, ensuring that the various connected components can work together to achieve the expected functional actions of the equipment.

[0032] A fixing block 5 is fixedly connected to the adjacent sides of the two transmission rods 3. The fixing block 5 can be made of aluminum alloy. Aluminum alloy is not only lightweight and easy to install on the transmission rods 3, but also has sufficient strength to fix other connected components, ensuring the stability of the device structure. An adjustment roller 6 is fixedly connected to the adjacent sides of the two fixing blocks 5. The surface of the adjustment roller 6 can be treated with a special wear-resistant rubber coating. This coating can increase the friction between the adjustment roller 6 and the processing film 8, allowing for better control during operations such as tension adjustment of the processing film 8. It can also effectively prevent the adjustment roller 6 from scratching the processing film 8 during contact, thereby protecting the surface quality of the processing film 8. The rear ends of the two transmission rods 3 are rotatably connected to a sliding block 1 4. The sliding block 1 4 is made of wear-resistant engineering plastic. This material allows the sliding block 1 4 to slide smoothly within the slots on both sides of the housing 1. It also has a certain wear resistance, which effectively extends its service life and reduces maintenance costs during equipment operation.

[0033] The shell 1 is internally slidably connected to a processing film 8, which moves inside the shell 1 in this sliding connection manner, ensuring that it can smoothly transition when passing through different processing areas without jamming or offsetting, thereby ensuring the continuity and accuracy of the entire processing process, making the quality of the processed TPU film more stable and reliable. The shell 1 is internally provided with a replacement component for quickly replacing the TRU roll film. The existence of this replacement component greatly improves the working efficiency of the equipment. When a roll of TPU film is used up, it can be quickly replaced, which greatly shortens the downtime caused by replacing the roll film, allowing the equipment to continue to operate efficiently and meet the needs of mass production. Cylinders 7 are fixedly connected to both sides of the shell 1. Cylinders 7 are made of high-performance pneumatic components, which have the characteristics of fast response speed and stable output force. They can accurately drive the sliding block 4 to move according to the control instructions, thereby realizing effective control of various related components of the equipment, ensuring that the equipment can accurately operate according to the predetermined program during the stretching and flattening processing.

[0034] The driving ends of the two cylinders 7 are fixedly connected to the rear ends of the two sliding blocks 4 respectively. Notches are provided on both sides of the housing 1. The outer parts of the two sliding blocks 4 are slidably connected to the inside of the notches. This sliding connection design allows the sliding blocks 4 to flexibly adjust their own positions according to the drive of the cylinder 7, thereby driving the other components connected to them to perform corresponding actions, realizing precise control of the operating status of the equipment and ensuring the smooth progress of the processing process. The interior of the housing 1 is rotatably connected to a preheating zone 9. The preheating zone 9 is equipped with an efficient heating element that can quickly and evenly preheat the processing film 8. When the processing film 8 passes through the preheating zone 9, its texture will soften. At this time, the molecular chain segments of the processing film 8 become more active, and the hardness and viscosity of the material are correspondingly reduced. In this way, in the subsequent stretching process, the processing film 8 is easier to deform and can be evenly stressed, effectively reducing the situation where the film ruptures or uneven stretching due to excessive local stress, significantly improving the stretching effect and quality, and making the stretched TPU film more in line with the requirements of medical products.

[0035] The internal rotation of the shell 1 is connected to the stretching zone 10, and the stretching zone 10 is provided with a precise stretching mechanism. When the processed film 8 enters the stretching zone 10 for the stretching operation, the cylinder 7 can be started so that the two sliding blocks 14 respectively drive the transmission rod 3 to rotate. Through the rotation of the transmission rod 3, the two rotating rods 2 are rotated with the two sides of the shell 1 as fixed points. Through the rotation of the rotating rod 2, the fixed block 5 drives the adjusting roller 6 to adjust the position, thereby controlling the tension of the TPU during stretching. The tension of the TPU film during the stretching process is accurately controlled to ensure that the film is evenly stressed when stretched, avoiding local overstretching or understretching, thereby ensuring the flatness and dimensional accuracy after stretching. Through this precise tension adjustment method, not only can the physical properties of the TPU film after stretching be effectively improved, so that it better meets the performance requirements of medical products for TPU film, but it can also effectively avoid unevenness such as wrinkles or ripples on the film surface caused by uneven tension, further improving the appearance quality of the TPU film after stretching.

[0036] The interior of the shell 1 is provided with a sliding entrance 17, which has been carefully designed so that its size and shape can adapt to processing membranes 8 of different specifications, ensuring that the processing membrane 8 can smoothly slide into the interior of the shell 1 along the sliding entrance 17 without encountering any obstructions during the entry process, thereby ensuring the smooth progress of the entire processing flow and laying a good foundation for subsequent processing operations. The interior of the shell 1 is rotatably connected to a heat setting area 11, which uses a suitable temperature to perform heat setting treatment on the stretched processing membrane 8. After being treated in the heat setting area 11, the newly formed molecular structure and morphology of the processing membrane 8 can be further consolidated, ensuring that during the subsequent processing and final use, there will be no significant changes due to factors such as temperature changes, maintaining good stability and physical properties, and making the processing membrane 8 more in line with the use requirements of medical products.

[0037] The interior of the shell 1 is rotatably connected to a cooling zone 12, which uses an effective cooling method, such as a frozen rotating roller. After the processed film 8 passes through the heat setting zone 11, the cooling zone 12 cools it. Cooling helps to fix the new molecular structure and morphology formed by the TPU film during the stretching and flattening process, making its physical properties more stable. At the same time, it prevents the residual heat generated by heating from causing deformation, adhesion and other problems in the subsequent winding or storage process, thereby ensuring the quality of the processed film 8 and the convenience of subsequent use. A sliding port 18 is provided inside the shell 1. The sliding port 18 is also carefully designed. Its size and shape can adapt to different specifications of processed films 8, ensuring that the processed film 8 can smoothly slide out of the interior of the shell 1 along the sliding port 18 after processing is completed, and will not be hindered in the process of leaving, thereby ensuring the integrity and smoothness of the entire processing flow, so that the processing operation of the equipment can be completed completely and efficiently.

[0038] Reference Figure 1 、 Figure 3 and Figure 4 The replacement component includes a sliding block 2 13. The outer portion of the sliding block 2 13 is slidably connected to the interior of the housing 1. The sliding block 2 13 is made of wear-resistant engineering plastic material. This material enables the sliding block 2 13 to slide smoothly inside the housing 1. At the same time, it has a certain wear resistance, which can effectively extend its service life. In addition, when the processing film 8 is unwinding, it can provide stable support for the processing film 8, ensuring the smooth unwinding process. The rear end of the sliding block 2 13 is fixedly connected with a telescopic spring 14. The telescopic spring 14 is made of high-quality high-elasticity alloy steel wire. This material gives the telescopic spring 14 good elastic recovery ability. When the sliding block 2 13 moves due to external force, the telescopic spring 14 can quickly return to its original state, thereby ensuring the normal operation of the replacement component and ensuring that the equipment can continue to perform processing operations.

[0039] The interior of the telescopic spring 14 is provided with a telescopic block 15. The telescopic block 15 is made of high-strength alloy steel. This material provides a stable support for the telescopic spring 14, preventing the telescopic spring 14 from deformation or displacement during the telescopic process, ensuring the reliability and stability of the entire replacement assembly and guaranteeing the normal operation of the equipment during the film roll replacement process. The side of the sliding block 13 away from the processing film 8 is fixedly connected to a handle 16. The handle 16 can be made of non-slip rubber material. This material makes the handle 16 easy for the operator to hold, improving the convenience and safety of the operator during the operation, and ensuring that the film roll replacement operation can proceed smoothly when pulling the handle 16. The outer end of the telescopic block 15 is slidably connected to the interior of the sliding block 13. The rear end of the telescopic block 15 is fixedly connected to the interior of the housing 1. The interior of the housing 1 is provided with a slide groove 19. The outer end of the handle 16 is slidably connected to the interior of the slide groove 19. The other end of the telescopic spring 14 is fixedly connected to the interior of the housing 1.

[0040] Slide the two ends of the processing film 8 into the interior of the shell 1 along the sliding entrance 17. At this time, the sliding block 2 13 will support the processing film 8, and the processing film 8 will be unwound at the top of the sliding block 2 13. This unwinding method allows the processing film 8 to be in a relatively stable state in the initial stage, which can effectively prevent the processing film 8 from becoming loose, entangled, and other undesirable phenomena, ensuring that the subsequent processing of the processing film 8 can proceed smoothly, and improving the stability and reliability of the processing process. When a roll of TPU film is used up, manually pull the handle 16 to slide inside the slide groove 19, so that the handle 16 drives the sliding block 2 13 to slide inside the shell 1. When the sliding block 2 13 completely slides into the interior of the shell 1, the TRU film roller will slide out from the sliding entrance 18. By quickly replacing the TUR film, processing time and labor costs can be saved, and processing efficiency is improved. This quick replacement method enables the equipment to resume production in a shorter time, minimizing the downtime caused by replacing film rolls, ensuring the continuity of equipment production, making the entire production process more efficient and smooth, and meeting the needs of large-scale batch production.

[0041] After the processed film 8 passes through the preheating zone 9, its texture becomes softer. At this time, the molecular chain segments of the processed film 8 are more active, which reduces the hardness and viscosity of the material, making it easier to deform and evenly stressed during the subsequent stretching process, reducing the situation where the film ruptures or uneven stretching due to excessive local stress is reduced, and significantly improving the stretching effect and quality. After being preheated, the processed film 8 can better adapt to the stretching operation when entering the stretching zone 10 for stretching, so that the stretched TPU film can achieve better results in terms of dimensional accuracy, physical properties, etc., meeting the strict requirements of medical products for TPU films. At the same time, since the processed film 8 is easier to deform and evenly stressed after preheating, it can also effectively avoid the unevenness such as wrinkles and ripples on the film surface caused by local uneven stress during the stretching process, further improving the appearance quality of the stretched TPU film.

[0042] During stretching, the cylinder 7 can be started so that the two sliding blocks 1-4 respectively drive the transmission rod 3 to rotate. Through the rotation of the transmission rod 3, the two rotating rods 2 rotate with the two sides of the shell 1 as fixed points. Through the rotation of the rotating rod 2, the fixed block 5 drives the adjusting roller 6 to accurately adjust the position, thereby controlling the tension of the TPU during stretching. The tension of the TPU film during the stretching process is accurately controlled to ensure that the film is evenly stressed when stretched, avoiding local over-stretching or under-stretching, thereby ensuring the flatness and dimensional accuracy after stretching. Through this precise tension adjustment method, not only can the physical properties of the TPU film after stretching be effectively improved, so that it better meets the performance requirements of medical products for TPU film, but it can also effectively avoid the unevenness of the film surface caused by uneven tension, such as wrinkles and ripples, and further improve the appearance quality of the TPU film after stretching.

[0043] Working principle: When a batch of TPU films needs to be stretched and flattened, the two ends of the processed film 8 are slid into the interior of the shell 1 along the sliding entrance 17. At this time, the sliding block 2 13 will support the processed film 8, and the processed film 8 will be unwound at the top of the sliding block 2 13. When a roll of TPU film is used up, the handle 16 is manually pulled to slide inside the slide groove 19, so that the handle 16 drives the sliding block 2 13 to slide inside the shell 1. When the sliding block 2 13 slides completely into the interior of the shell 1, the TRU film roller will slide out from the sliding entrance 18. By quickly replacing the TPU film, the preparation time for processing can be saved, the manpower consumption is reduced, and the processing efficiency is improved.

[0044] After the processed film 8 passes through the preheating zone 9, its texture becomes soft. At this time, the processed film 8 will be stretched in the stretching zone 10. During stretching, the cylinder 7 can be started to make the two sliding blocks 14 drive the transmission rod 3 to rotate respectively. Through the rotation of the transmission rod 3, the two rotating rods 2 are rotated with the two sides of the shell 1 as fixed points. Through the rotation of the rotating rod 2, the fixed block 5 drives the adjusting roller 6 to adjust its position, so as to controllably adjust the tension of the TPU during stretching, accurately control the tension of the TPU film during the stretching process, ensure that the film is evenly stressed when stretched, avoid local over-stretching or under-stretching, and thus ensure the flatness and dimensional accuracy after stretching.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical TPU film stretching and flattening device, comprising a housing (1), characterized in that: Two rotating rods (2) are rotatably connected to both sides of the shell (1), and the rear ends of the two rotating rods (2) are rotatably connected to the transmission rod (3). The adjacent sides of the two transmission rods (3) are fixedly connected to the fixed blocks (5), and the adjacent sides of the two fixed blocks (5) are fixedly connected to the adjustment rollers (6). The rear ends of the two transmission rods (3) are rotatably connected to the sliding blocks (4). The interior of the shell (1) is slidably connected to the processing film (8), and the interior of the shell (1) is provided with a replacement component for quickly replacing the TRU roll film.

2. The medical TPU film stretching and flattening equipment according to claim 1, characterized in that: Cylinders (7) are fixedly connected to both sides of the housing (1), and the driving ends of the two cylinders (7) are fixedly connected to the rear ends of the two sliding blocks (4).

3. The medical TPU film stretching and flattening equipment according to claim 1, characterized in that: Notches are provided on both sides of the housing (1), and the exteriors of the two sliding blocks (4) are slidably connected to the interiors of the notches.

4. The medical TPU film stretching and flattening equipment according to claim 1, characterized in that: The interior of the shell (1) is rotatably connected to a preheating zone (9), the interior of the shell (1) is rotatably connected to a stretching zone (10), and a sliding entrance (17) is provided inside the shell (1).

5. The medical TPU film stretching and flattening equipment according to claim 1, characterized in that: The shell (1) is rotatably connected to a heat setting zone (11) inside, the shell (1) is rotatably connected to a cooling zone (12) inside, and a sliding outlet (18) is provided inside the shell (1).

6. The medical TPU film stretching and flattening equipment according to claim 1, characterized in that: The replacement component includes a second sliding block (13), the outside of the second sliding block (13) is slidably connected to the inside of the shell (1), the rear end of the second sliding block (13) is fixedly connected to a telescopic spring (14), the interior of the telescopic spring (14) is provided with a telescopic block (15), and the side of the second sliding block (13) away from the processing film (8) is fixedly connected to a handle (16).

7. The medical TPU film stretching and flattening device according to claim 6, characterized in that: The outside of the telescopic block (15) is slidably connected to the inside of the second sliding block (13), and the rear end of the telescopic block (15) is fixedly connected to the inside of the housing (1).

8. The medical TPU film stretching and flattening equipment according to claim 6, characterized in that: A sliding groove (19) is provided inside the housing (1), the outside of the handle (16) is slidably connected to the inside of the sliding groove (19), and the other end of the telescopic spring (14) is fixedly connected to the inside of the housing (1).

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