Embossing device for preparing film for anti-sticking peritoneal drainage bag

Abstract

The utility model relates to an embossing device for preparing an anti-sticking film for a peritoneal drainage bag. The embossing device comprises a plurality of functional roller sets and a driving assembly, and a synchronous transmission mechanism is arranged in the driving assembly; the embossing roller set comprises two metal rollers, a left embossing belt, a right embossing belt and a polishing belt are arranged on the surfaces of the two metal rollers, the polishing belt is arranged between the left embossing belt and the right embossing belt, and a gap used for pressing a film is formed between the two metal rollers; the cooling roller set comprises at least one cooling roller and is located behind a discharging port of the embossing roller set. The conveying roller set comprises at least one transmission roller and is located in front of a feeding port of the embossing roller set. According to the scheme, the pressed film can be cooled and shaped in a short time, surface lines are prevented from being interfered by the outside, the rotating speeds of all the functional roller sets can be kept consistent by arranging the synchronous rotating mechanism, and then the embossing quality is guaranteed. The double-metal roller is used as the embossing roller, so that aggregation of precipitates on the surface of the embossing roller can be effectively reduced, and the embossing effect is guaranteed.

Description

Technical Field

[0001] This application relates to the field of film embossing technology, and in particular to an embossing device for preparing films for anti-adhesive peritoneal drainage bags. Background Technology

[0002] Currently, peritoneal dialysis bags are essential devices for peritoneal dialysis. The bag's design consists of an upper membrane and a lower membrane, both made of PVC calendered film, which is then embossed to prevent adhesion after high-temperature steam sterilization. Additionally, for convenience, the upper membrane of the peritoneal dialysis bag includes a transparent observation window, allowing medical staff to visually monitor the patient's fluid output.

[0003] The current peritoneal dialysis bag film embossing device mainly consists of metal rollers and rubber rollers mounted on the frame. Embossing patterns to be pressed are set on the metal rollers and rubber rollers, and the observation window is set as a mirror so that the film in this area remains transparent after being pressed.

[0004] In practice, the inventors discovered that in the aforementioned embossing device, which combines metal and rubber rollers, film precipitates significantly adhere and accumulate on the rubber roller during pressing, affecting the quality of the subsequent film. Furthermore, the film's high temperature after embossing makes its surface texture susceptible to external influences during the short period of time it has set. Utility Model Content

[0005] To address the problems in practical applications where the rubber rollers of the film embossing device for peritoneal dialysis bags easily attract film precipitates, and the surface texture of the embossed film is easily affected by external factors in a short period of time, thus reducing the quality of the film embossing and its subsequent use, this application aims to propose an embossing device for preparing films for non-adhesive peritoneal drainage bags. This device can reduce the accumulation of precipitates on the surface of the pressure rollers and allow the pressed film to quickly set. The specific solution is as follows:

[0006] An embossing device for preparing a film for an anti-adhesive peritoneal drainage bag includes multiple functional roller groups and a drive assembly for driving each of the functional roller groups. The drive assembly is equipped with a synchronous transmission mechanism that drives each functional roller group to rotate synchronously.

[0007] The functional roller group includes rollers rotatably mounted on the frame.

[0008] The embossing roller assembly is configured as two metal rollers that cooperate with each other. The surfaces of the two metal rollers are provided with a left embossing strip and a right embossing strip. A polishing strip is provided at the left embossing strip or the right embossing strip. A gap is formed between the two metal rollers for pressing the film.

[0009] A cooling roller assembly, including at least one cooling roller, is located above the discharge port of the embossing roller assembly and is used to receive and cool the pressed film.

[0010] The conveyor roller assembly, including at least one drive roller, is located in front of the feed inlet of the embossing roller assembly and is used to receive and convey the film to be pressed.

[0011] Through the above technical solutions, the pressed film can be cooled and set in a short time, avoiding external interference with the surface texture. By setting a synchronous rotation mechanism, the rotation speed between each functional roller group can be kept consistent, thereby preventing changes in the tension of the film to be pressed or after pressing, and further ensuring the quality of embossing. Finally, using a bimetallic roller as the embossing roller can effectively reduce the accumulation of precipitates on the outer surface of the embossing roller, ensuring the embossing effect.

[0012] Furthermore, the cooling roller includes:

[0013] The cooling roller body is rotatably mounted on the frame at both ends via bearings, and the cooling roller body has a cooling cavity inside for containing cooling fluid;

[0014] A circulating cooling pipe has its two ends penetrating the end walls of the cooling roller body and being rotatably connected to the two ends of the cooling roller body via sealed bearings. A circulating pump is installed on the body of the circulating cooling pipe. The circulating cooling pipe is connected to an external cooling device and the cooling cavity to form a circulating cooling circuit.

[0015] The above technical solution can transfer the cold energy in the cooling fluid to the surface of the cooling roller, thereby cooling the pressed film and setting the texture pressed on its surface in a short time.

[0016] Furthermore, a support portion is provided inside the cooling roller body. The support portion is cylindrical and has a gap with the cooling roller body. The cooling cavity is formed by the gap between the support portion and the cooling roller body.

[0017] The above technical solutions enable more uniform cooling inside the roller body and also facilitate the installation and maintenance of the roller body.

[0018] Furthermore, each of the functional roller groups has a driven gear on the same side of the roller body;

[0019] The drive assembly includes a drive motor and a set of variable speed gears that are configured to work with it.

[0020] The synchronous transmission mechanism includes a synchronous chain and / or different types of synchronous gears disposed between the transmission gear set and the driven gear.

[0021] With the above technical solution, each functional roller group is powered by the same drive motor, which can effectively ensure that each roller can rotate synchronously.

[0022] Furthermore, a cleaning roller is also provided on the frame. The cleaning roller is arranged parallel to the metal roller in the embossing roller group and its edges abut against each other, and is used to clean the surface of the metal roller.

[0023] The above technical solution can clean the surface of the metal roller during the embossing process, preventing precipitates on the surface of the metal roller from affecting the embossing quality of the film.

[0024] Furthermore, the patterns on the left and right embossed belts are set to be the same or different, and the two metal rollers located on the polishing belt are set to a smooth pressing structure.

[0025] The above technical solution allows the patterns formed by the left and right embossing tapes to be different, thereby reducing the possibility of adhesion between the upper membrane and the bottom mold during the later use of the peritoneal dialysis bag. The smooth polishing tape set for pressure application gives the peritoneal dialysis bag a clear and transparent window, making it convenient for medical staff to visually observe the patient's fluid excretion.

[0026] Furthermore, the cooling fluid is configured as water or a specific gas.

[0027] Furthermore, the left and right embossed strips are decorated with diamond patterns, square patterns, cross patterns, dot patterns, wave patterns, or stripe patterns.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] Based on the above scheme, the pressed film can be cooled and set in a short time, avoiding external interference with the surface texture. By setting a synchronous rotation mechanism, the rotation speed between each functional roller group can be kept consistent, thereby preventing changes in the tension of the film to be pressed or after pressing, and further ensuring the quality of embossing. Finally, using a bimetallic roller as the embossing roller can effectively reduce the accumulation of precipitates on the outer surface of the embossing roller, ensuring the embossing effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the thin film embossing device of this application;

[0031] Figure 2 This is a schematic diagram of the structure of an embossing metal roller according to this application;

[0032] Figure 3 This is another structural schematic diagram of the embossing metal roller of this application;

[0033] Figure 4 This is a cross-sectional view of the cooling roller of this application.

[0034] Reference numerals: 1. Frame; 2. Metal roller; 3. Left embossing belt; 4. Right embossing belt; 5. Polishing belt; 6. Cooling roller; 7. Drive roller; 8. Cooling roller body; 9. Cooling cavity; 10. Circulating cooling pipe; 11. Cooling sub-pipe; 12. Driven gear; 13. Drive motor; 14. Cleaning roller; 15. Through hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] An embossing device for preparing a film for an anti-adhesive peritoneal drainage bag, such as Figure 1 As shown, it includes a frame 1 and multiple functional roller groups rotatably mounted on the frame 1. The frame 1 is also provided with a drive assembly for driving each functional roller group.

[0037] like Figure 1 As shown, the functional roller group includes an embossing roller group, a cooling roller group, and a conveyor roller group.

[0038] The embossing roller assembly consists of two mating metal rollers 2, with a gap between them for pressing the film. Both metal rollers 2 are made of stainless steel alloy and have a left embossing strip 3 and a right embossing strip 4 on their surfaces. Additionally, as... Figure 2 and Figure 3 As shown, a polishing strip 5 is provided at either the left embossing strip 3 or the right embossing strip 4. The left embossing strip 3 and the right embossing strip 4 are decorated with diamond patterns, square patterns, cross patterns, dot patterns, wave patterns, or stripe patterns. The left embossing strip 3 and the right embossing strip 4 can have the same or different patterns. Preferably, the patterns on the left embossing strip 3 and the right embossing strip 4 are not the same, and the two metal rollers 2 are configured with a smooth pressing structure at the position of the polishing strip 5. This allows the patterns pressed by the left embossing strip 3 and the right embossing strip 4 to present different patterns, further reducing the possibility of adhesion between the upper membrane and the bottom mold during the later use of the peritoneal dialysis bag. The smooth pressing polishing strip 5 provides a clear and transparent viewing window on the later-formed peritoneal dialysis bag, making it convenient for medical personnel to visually observe the patient's fluid excretion.

[0039] The cooling roller assembly includes at least one cooling roller 6, located above the outlet of the embossing roller assembly, for receiving and cooling the pressed film. To prevent the pattern on the film from being affected during transport, the cooling roller assembly is also rotatably mounted on the frame 1 via bearings. In a specific embodiment, the cooling roller assembly can be fixedly mounted on the frame 1.

[0040] Detailed, such as Figure 4As shown, the cooling roller 6 includes a cooling roller body 8 and a circulating cooling pipe 10. The cooling roller body 8 is rotatably mounted on the frame 1 at both ends via bearings. The cooling roller body 8 has a cooling cavity 9 inside for containing cooling fluid, such as cooling water or cooling gas. The cooling fluid transfers the cooling energy to the surface of the cooling roller 6 to cool the pressed film and make it quickly set.

[0041] Both ends of the circulating cooling pipe 10 penetrate the end walls of the cooling roller body 8 and are rotatably connected to both ends of the cooling roller body 8 via sealed bearings. A circulating pump is installed on the body of the circulating cooling pipe 10 to drive the flow of cooling fluid in the circulating cooling pipe 10. At the same time, the circulating cooling pipe 10 connects to an external cooling device and a cooling cavity 9 to form a circulating cooling circuit. The external cooling device includes a compressor and a condenser, etc., to cool the cooling fluid.

[0042] It should be noted that the cooling roller 6 and the embossing roller 2 can be configured with different spacings according to the cooling requirements in actual working conditions. When the spacing between the two is the film thickness (generally 0.1-0.25mm), the film is just sandwiched between the cooling roller 6 and the embossing roller 2, and the cooling effect is optimal at this time.

[0043] Specifically, a support portion 11 is provided inside the cooling roller body 8. The support portion 11 is cylindrical and has a gap with the cooling roller body 8. The cooling cavity 9 is formed by the gap between the support portion 11 and the cooling roller body 8. One end of the support portion 11 is fixed to the cooling roller body 8. The support portion 11 has several through holes 15 radially opened at this end. The through holes 15 connect the cooling cavity 9 and the cooling pipe 10 to form a circulating cooling circuit.

[0044] When pressing the film using the embossing roller assembly, a small amount of precipitates may occasionally adhere to and accumulate on the surface of the metal roller 2. To prevent these precipitates from affecting the embossing quality of the film, a cleaning roller 14 is also provided on the frame 1. The cleaning roller 14 is arranged parallel to the metal roller 2 in the embossing roller assembly, with their edges abutting each other. Cleaning grooves are formed along the length of the cleaning roller 14, used to clean the surface of the metal roller 2 by scraping. In practical applications, the cleaning roller 14 can be fixedly mounted on the frame 1, or rotatably connected to the frame 1 at a speed lower than that of the metal roller 2. As long as a corresponding speed difference exists between the cleaning roller 14 and the metal roller 2, the surface of the metal roller 2 can be cleaned during the embossing process.

[0045] To facilitate the transfer of the film to be pressed, the conveying roller group in this application includes at least one drive roller 7, preferably two rollers, located in front of the feed inlet of the embossing roller group and arranged at different heights, for receiving and transferring the film to be pressed.

[0046] To ensure consistent rotational speeds among the rollers in each functional roller group, thereby preventing changes in the tension of the film to be pressed or after pressing, the drive assembly is equipped with a synchronous transmission mechanism that drives the functional roller groups to rotate synchronously. Specifically, each roller in each functional roller group has a driven gear 12 on the same side. The drive assembly includes a drive motor 13 and a corresponding variable speed gear set to maintain a constant output of driving kinetic energy. The synchronous transmission mechanism includes a synchronous chain and / or different types of synchronous gears disposed between the variable speed gear set and the driven gear 12. The size and number of teeth of the synchronous gears are adapted to the outer diameter of their corresponding roller bodies, thereby ensuring consistent edge linear velocity of each roller.

[0047] With the above technical solution, each functional roller group is powered by the same drive motor 13, which can effectively ensure that each roller can rotate synchronously.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An embossing device for preparing a film for an anti-adhesive peritoneal drainage bag, characterized in that: It includes multiple functional roller groups and a drive assembly for driving each of the functional roller groups, wherein the drive assembly is equipped with a synchronous transmission mechanism that drives each functional roller group to rotate synchronously. The functional roller assembly includes rollers rotatably mounted on the frame (1): The embossing roller assembly is configured as two metal rollers (2) that cooperate with each other. The surfaces of the two metal rollers (2) are provided with a left embossing strip (3) and a right embossing strip (4). A polishing strip (5) is provided at the left embossing strip (3) or the right embossing strip (4). A gap for pressing the film is formed between the two metal rollers (2). The cooling roller assembly includes at least one cooling roller (6), located above the discharge port of the embossing roller assembly, for receiving and cooling the pressed film; The conveyor roller assembly includes at least one drive roller (7), located in front of the feed inlet of the embossing roller assembly, for receiving and conveying the film to be pressed.

2. The embossing device for preparing a film for an anti-adhesive peritoneal drainage bag according to claim 1, characterized in that: The cooling roller (6) includes: The cooling roller body (8) is rotatably mounted on the frame (1) at both ends via bearings. The cooling roller body (8) has a cooling cavity (9) inside for containing cooling fluid. The circulating cooling pipe (10) has its two ends penetrating through the end wall of the cooling roller body (8) and is rotatably connected to the two ends of the cooling roller body (8) via sealed bearings. A circulating pump is installed on the pipe body of the circulating cooling pipe (10). The circulating cooling pipe (10) is connected to the external cooling device and the cooling cavity (9) to form a circulating cooling circuit.

3. The embossing device for preparing a non-adhesive peritoneal drainage bag film according to claim 2, characterized in that: The cooling roller body (8) is provided with a support part (11) inside. The support part (11) is cylindrical and has a gap with the cooling roller body (8). The cooling cavity (9) is formed by the gap between the support part (11) and the cooling roller body (8).

4. The embossing device for preparing a non-adhesive peritoneal drainage bag film according to claim 1, characterized in that: Each of the functional roller groups has a driven gear (12) on the same side of the roller body; The drive assembly includes a drive motor (13) and a gear set that is configured to cooperate with it; The synchronous transmission mechanism includes a synchronous chain and / or different types of synchronous gears disposed between the variable speed gear set and the driven gear (12).

5. The embossing device for preparing a film for an anti-adhesive peritoneal drainage bag according to claim 1, characterized in that: The frame (1) is also provided with a cleaning roller (14), which is arranged parallel to the metal roller (2) in the embossing roller group and its edges abut against each other, for cleaning the surface of the metal roller (2).

6. The embossing device for preparing a film for an anti-adhesive peritoneal drainage bag according to claim 1, characterized in that: The patterns on the left embossing belt (3) and the right embossing belt (4) are set to be the same or different, and the two metal rollers (2) at the position of the polishing belt (5) are set to a smooth pressing structure.

7. The embossing device for preparing a film for an anti-adhesive peritoneal drainage bag according to claim 2, characterized in that: The cooling fluid is configured as water.

8. The embossing device for preparing a non-adhesive peritoneal drainage bag film according to claim 1, characterized in that: The left embossed strip (3) and the right embossed strip (4) are decorated with diamond patterns, square patterns, cross patterns, dot patterns, wave patterns or stripe patterns.

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