Automatic folding equipment for medical sterile protective sleeve production

By combining the lifting plate and high-pressure airflow of the automatic folding equipment with a clamping structure, the problems of low material discharge efficiency and wrinkles in medical sterile protective sleeves are solved, realizing automated material discharge and tight stacking of products, ensuring the appearance and sealing of the products.

CN224257957UActive Publication Date: 2026-05-19NANCHANG HENGSHUO MASCH EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANCHANG HENGSHUO MASCH EQUIP CO LTD
Filing Date
2025-06-20
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In the current production process of medical sterile protective sleeves, the folded products are tightly stacked in the equipment cavity and need to be manually removed, resulting in low material discharge efficiency. In addition, the thin film is prone to irreversible stress wrinkles, which affect the product's appearance and sealing performance.

Method used

The automatic folding equipment uses a third cylinder to drive the lifting plate to move vertically. Combined with a specially widened inner corner structure, it penetrates deep into the bottom of the protective sleeve. The lifting plate lifts the finished product, and a high-pressure airflow is sprayed by an air pump to eliminate interlayer slippage wrinkles. The clamping force of the clamping parts and the straightening plate is used to maintain the folded state.

Benefits of technology

Automated material discharge is achieved, avoiding secondary deformation caused by manual handling, eliminating interlayer slippage and wrinkles, and ensuring tight stacking and sealing of products.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224257957U_ABST
    Figure CN224257957U_ABST
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Abstract

The utility model relates to an automatic folding device for medical sterile protective sleeve production, which comprises a mounting seat, a first air cylinder mounted in the middle of the mounting seat, a lifting cylinder connected to the telescopic end of the first air cylinder, a driving motor mounted inside the lifting cylinder, a turntable connected to an output shaft of the driving motor, and four first opening plates slidably connected to the lifting cylinder. A second opening plate is connected to the mounting base, the second opening plate is in contact connection with the first opening plate, four second air cylinders are mounted on the second opening plate, clamping plates are connected to the telescopic ends of the second air cylinders, third air cylinders are mounted on the front portion and the rear portion of the mounting table, and a lifting plate is connected between the telescopic ends of the third air cylinders. The lifting plate is symmetrically driven by the third air cylinder to vertically move, a specially-made widened inner angle structure can penetrate into the bottom of a folded protective sleeve, a finished product is integrally lifted through uniform upward lifting force, secondary deformation caused by manual taking is avoided, and discharging is more convenient.
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Description

Technical Field

[0001] This utility model relates to the field of medical supplies manufacturing technology, and in particular to an automatic folding device for producing sterile medical protective sleeves. Background Technology

[0002] In the medical care process, sterile protective sleeves are important tools used in the medical environment to prevent microbial contamination and ensure that instruments or items maintain a sterile state during use. They are usually made of high-quality plastic film or other suitable materials, with one end open and the other closed. A drawstring is threaded through the open end to bind the sleeve. They are usually quite long and need to be folded during production to ensure ease of use and transportation efficiency. The folding bag making machine on the market is used for folding operations. The folded products are tightly stacked in the machine cavity, requiring manual reaching to remove them. This results in low material output efficiency and is prone to secondary deformation of the folded products. When processing thin films, traditional mechanical folding can produce irreversible stress wrinkles, affecting the product's appearance and sealing performance.

[0003] To address the above issues, an automatic folding device for producing sterile medical protective sleeves has been developed. Utility Model Content

[0004] To overcome the shortcomings of traditional mechanical folding, which requires manual retrieval of folded products tightly stacked inside the equipment cavity, resulting in low material discharge efficiency and easy secondary deformation of the folded products, and the irreversible stress wrinkles that affect the product's appearance and sealing when processing thin films, this utility model provides an automatic folding device for the production of medical sterile protective sleeves.

[0005] The technical solution of this utility model is as follows: an automatic folding device for producing sterile medical protective sleeves, comprising a mounting base, a first cylinder mounted in the middle of the mounting base, a lifting cylinder connected to the telescopic end of the first cylinder, a drive motor mounted inside the lifting cylinder, a turntable connected to the output shaft of the drive motor, four guide grooves on the turntable, four first expansion plates slidably connected to the lifting cylinder, each of the first expansion plates being slidably connected to an adjacent guide groove, a second expansion plate connected to the mounting base, the second expansion plate being in contact with the first expansion plate, four second cylinders mounted on the second expansion plate, each of the second cylinders being connected to a clamping plate at its telescopic end, a third cylinder mounted on both the front and rear of the mounting base, a lifting plate connected between the telescopic ends of the third cylinders, four clamping members rotatably connected to the lifting plate, torsion springs connected between the left and right sides of each clamping member and the lifting plate, and two straightening plates connected to each of the second expansion plates, each of the straightening plates being in contact with an adjacent clamping member.

[0006] To further explain, it also includes an air pump, which is also installed at the front of the mounting base. The air pump is located to the right of the adjacent third cylinder. The air outlet of the air pump is connected to an air duct, and the upper part of the air duct is connected to a jet nozzle.

[0007] To further clarify, all of the guide grooves are arc-shaped structures.

[0008] To further clarify, the third cylinder is symmetrically distributed.

[0009] To further explain, the lifting plate has a larger inner corner area, allowing it to penetrate deeper into the bottom of the protective sleeve, making material discharge more convenient.

[0010] To further clarify, there are four jet heads.

[0011] By adopting the above technical solutions, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model uses a third cylinder to symmetrically drive the lifting plate to move vertically. Its specially widened inner angle structure can penetrate deep into the bottom of the folded protective cover. The finished product is lifted as a whole by a uniform upward lifting force, avoiding secondary deformation caused by manual removal, making the material discharge more convenient. At the same time, when the lifting plate rises, the clamping part is squeezed by the straightening plate and rotates inward under the action of the torsion spring, forming a progressive clamping force, so that the folded tail of the protective cover is always in a compacted state, thereby preventing the folded protective cover from becoming loose.

[0013] 2. This utility model uses an air pump to spray high-pressure airflow from a jet nozzle, which blows at a specific angle onto the folded parts, effectively eliminating interlayer slippage wrinkles caused by the smooth surface of the material. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the first partial cross-sectional three-dimensional structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the second partial cross-sectional three-dimensional structure of this utility model.

[0017] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0018] The markings in the attached diagram are as follows: 1: Mounting base, 2: First cylinder, 3: Lifting cylinder, 4: Drive motor, 5: Turntable, 6: First support plate, 7: Second support plate, 8: Second cylinder, 9: Clamping plate, 10: Air pump, 11: Air duct, 12: Jet nozzle, 13: Third cylinder, 14: Lifting plate, 15: Pressing element, 16: Torsion spring, 17: Straightening plate. Detailed Implementation

[0019] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0020] Example 1

[0021] An automatic folding device for producing sterile medical protective sleeves, such as Figure 1 , Figure 2 and Figure 4 As shown, the system includes a mounting base 1, a first cylinder 2 mounted in the middle of the mounting base 1, a lifting cylinder 3 connected to the telescopic end of the first cylinder 2, a drive motor 4 installed inside the lifting cylinder 3, a turntable 5 connected to the output shaft of the drive motor 4, and four guide grooves, all of which are arc-shaped, on the turntable 5. Four first support plates 6 are slidably connected to the lifting cylinder 3, and each of the first support plates 6 is slidably connected to the adjacent guide groove. A second support plate 7 is connected to the mounting base 1, and the second support plate 7 is in contact with the first support plate 6. Four second cylinders 8 are mounted on the second support plate 7. The second cylinder 8 is connected to a clamping plate 9 at its telescopic end. The third cylinder 13 is installed on both the front and rear of the mounting platform. The third cylinder 13 is symmetrically distributed. A lifting plate 14 is connected between the telescopic ends of the third cylinder 13. The lifting plate 14 has a larger inner corner area and can penetrate deeper into the bottom of the protective sleeve, making it easier to discharge materials. Four clamping parts 15 are rotatably connected to the lifting plate 14. Torsion springs 16 are connected between the left and right sides of the clamping parts 15 and the lifting plate 14. Two straightening plates 17 are connected to the second expansion plate 7. The straightening plates 17 are in contact with the adjacent clamping parts 15.

[0022] It should be noted that in the medical care process, sterile medical protective sleeves are important tools used in the medical environment to prevent microbial contamination and ensure that instruments or items maintain a sterile state during use. They are typically made of high-quality plastic film or other suitable materials, with one end open and the other closed. A drawstring is threaded through the open end for securing the sleeve. They are usually quite long and need to be folded during production to ensure ease of use and efficient transportation. During the production of these protective sleeves, an automated folding device is typically used to fold the formed sleeves automatically. This equipment is integrated at the end of the production line. When using this device, first, place the open end of the protective sleeve onto the four first support plates 6. Then, start the drive motor 4. The output shaft of the drive motor 4 rotates, causing the turntable 5 to rotate in the forward direction, which in turn causes the first support plates 6 to retract inward along the guide groove until the first support plates 6 contact the second support plates 7. Next, start the first cylinder 2. The telescopic end of the first cylinder 2 drives the lifting cylinder 3 to move upward, which in turn causes the first support plates 6 to move upward until they reach the specified height. During the upward movement of the first support plates 6, the protective sleeve will surround the outer perimeter of the second support plates 7. At this time, start the second cylinder 8. The telescopic end of the second cylinder 8 drives the clamping plate 9 to retract inward. The protective sleeve is initially folded by evenly clamping its edges against the surface of the second support plate 7. Once the first support plate 6 reaches the designated height, the drive motor 4 is restarted. The output shaft of the drive motor 4 drives the turntable 5 to rotate in the opposite direction, causing the first support plate 6 to expand outwards, thus opening the protective sleeve. Utilizing the friction between the first support plate 6 and the protective sleeve, the protective sleeve is moved downwards. This folding operation is repeated until the protective sleeve reaches its final fold, at which point the closed end of the protective sleeve will be fitted over the upper part of the first support plate 6. At this point, the drive motor 4 is restarted, causing the first support plate 6 to retract. The first support plate 6 will then be positioned at the second support plate 7. Inside plate 7, the operator then removes the folded protective cover. To make it easier to remove the protective cover, the third cylinder 13 can be activated. The telescopic end of the third cylinder 13 drives the lifting plate 14 to move upward. The lifting plate 14 will lift the folded protective cover upward, making it easier for the operator to remove. At the same time, it will also drive the clamping member 15 to move upward. The clamping member 15 contacts the adjacent straightening plate 17, and under the action of the torsion spring 16, the straightening plate 17 will continuously squeeze the adjacent clamping member 15, causing the clamping member 15 to rotate inward. The clamping member 15 can press the protective cover tightly, effectively preventing the protective cover from loosening, thereby ensuring the folding effect of the protective cover.

[0023] Example 2

[0024] Based on Example 1, such as Figure 3 As shown, it also includes an air pump 10. An air pump 10 is also installed at the front of the mounting base 1. The air pump 10 is located to the right of the adjacent third cylinder 13. The air outlet of the air pump 10 is connected to an air pipe 11. An air nozzle 12 is connected to the upper part of the air pipe 11. There are 4 air nozzles 12.

[0025] It should be noted that when the first support plate 6 moves the protective sleeve downward, the protective sleeve may have insufficient friction between the first support plate 6 and the protective sleeve due to its own smoothness. This can easily cause relative sliding during folding, resulting in misalignment and wrinkles in each layer. To avoid this situation, the air pump 10 supplies air to the four jet nozzles 12 through the air duct 11. The high-pressure airflow blows at a specific angle towards the folding part to eliminate material wrinkles and assist in shaping, thereby preventing wrinkles from appearing when the protective sleeve is folded.

[0026] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. An automatic folding device for producing sterile medical protective sleeves, characterized in that: The device includes a mounting base (1), a first cylinder (2) mounted in the middle of the mounting base (1), a lifting cylinder (3) connected to the telescopic end of the first cylinder (2), a drive motor (4) installed inside the lifting cylinder (3), a turntable (5) connected to the output shaft of the drive motor (4), four guide grooves on the turntable (5), four first support plates (6) slidably connected to the lifting cylinder (3), each of the first support plates (6) slidably connected to the adjacent guide groove, and a second support plate (7) connected to the mounting base (1), the second support plate (7) being in contact with the first support plate (6). Four second cylinders (8) are installed on the second expansion plate (7). Clamping plates (9) are connected to the telescopic ends of the second cylinders (8). Third cylinders (13) are installed on both the front and rear parts of the mounting base (1). A lifting plate (14) is connected between the telescopic ends of the third cylinders (13). Four clamping parts (15) are rotatably connected to the lifting plate (14). Torsion springs (16) are connected between the left and right parts of the clamping parts (15) and the lifting plate (14). Two straightening plates (17) are connected to the second expansion plate (7). The straightening plates (17) are in contact with the adjacent clamping parts (15).

2. The automatic folding device for producing a sterile medical protective sleeve according to claim 1, characterized in that: It also includes an air pump (10), which is also installed at the front of the mounting base (1). The air pump (10) is located on the right side of the adjacent third cylinder (13). The air outlet of the air pump (10) is connected to a duct (11), and the upper part of the duct (11) is connected to a jet nozzle (12).

3. An automatic folding device for producing a sterile medical protective sleeve according to claim 1, characterized in that: All guide grooves are arc-shaped.

4. An automatic folding device for producing a sterile medical protective sleeve according to claim 1, characterized in that: The third cylinder (13) is symmetrically distributed.

5. An automatic folding device for producing a sterile medical protective sleeve according to claim 1, characterized in that: The lifting plate (14) has a larger inner corner area and can penetrate deeper into the bottom of the protective sleeve, making it easier to discharge materials.

6. An automatic folding device for producing a sterile medical protective sleeve according to claim 2, characterized in that: There are four jet heads (12).