A cutting mechanism for a composite film bag making device
By combining the rotating rod and the electric telescopic rod, the problem of cumbersome operation of the limiting structure of the composite film bag making device is solved, enabling precise cutting and stable delivery of pharmaceutical composite films, improving cutting accuracy and sealing performance, and adapting to different specifications of pharmaceutical packaging.
Patent Information
- Application Number
- CN202522547568.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-01
AI Technical Summary
The existing composite film bag making device has a cumbersome limiting structure that relies on manual adjustment and is prone to deviation, making it difficult to meet the precision and safety requirements of pharmaceutical packaging.
The rotating rod connection design converts sliding friction into rolling friction. The electric telescopic rod provides stable power. The sliders on both sides of the cutter slide and the groove of the connecting plate for guidance. The auxiliary telescopic rod provides synchronous support. The baffle slides in close contact with the cutter to prevent the film material from shifting. The dual guidance and anti-deviation design improves cutting accuracy.
It enables precise, non-destructive, and stable cutting of pharmaceutical composite films, adapting to different specifications of pharmaceutical packaging, improving cutting accuracy and sealing performance, and ensuring the safety of pharmaceutical storage.
Smart Images
Figure CN224940714U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite film cutting mechanisms, and more particularly to a cutting mechanism for a composite film bag making device. Background Technology
[0002] In the pharmaceutical packaging field, pharmaceutical composite films (which often contain barrier layers such as aluminum foil and EVOH, and must meet GMP compliance, sterility, residue-free requirements, and dimensional accuracy of ≤±0.3mm, and are mostly thin (0.08-0.12mm) or contain brittle aluminum foil materials, and need to be compatible with different specifications of bags such as tablets, capsules, and oral liquids) are the core carriers to ensure the safety and stability of drug storage. However, most composite film bag making and cutting mechanisms use fixed bolt locking or snap-on designs for their limiting structure. When adjusting, it is necessary to first disassemble the fixed parts on both sides, and then manually measure and position the limiting components. This is not only cumbersome to operate, but also relies on the worker's experience for manual adjustment, which can easily lead to asymmetry in the left and right limits, causing the film material to shift during transport.
[0003] Therefore, those skilled in the art have provided a cutting mechanism for a composite film bag-making apparatus to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a cutting mechanism for a composite film bag making device. The rotating connection design of the rotating rod can convert the sliding friction during film material transportation into rolling friction, reduce film material scratches and ensure smooth transportation. During cutting, the electric telescopic rod provides stable power. The sliding guide of the sliders on both sides of the cutter and the sliding groove of the connecting plate, as well as the synchronous support of the auxiliary telescopic rod, can prevent the cutter from tilting. The fit and sliding of the baffle and the cutter prevent the film material from shifting back and forth. The dual guidance and anti-deviation design improves the cutting accuracy.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A cutting mechanism for a composite film bag making device includes two connecting plates. Limiting rods are provided at the front end of the upper part and the rear end of the lower part of the adjacent side of the two connecting plates. A rotating rod is provided at the rear end of the upper part of the adjacent side of the two connecting plates. A fixed plate is provided at the lower end of the middle part of the adjacent side of the two connecting plates. A bidirectional threaded rod is provided inside the two limiting rods. Movable sleeves are provided on both sides of the outer side of the two limiting rods. Two auxiliary telescopic rods, two connecting springs and an electric telescopic rod are provided on the upper part of the fixed plate. A cutter and two baffles are provided in the middle part of the adjacent side of the two connecting plates. The above technical solution forms a stable frame support structure. The components work together to achieve integrated operation of limiting, conveying and cutting the pharmaceutical composite film. It can not only adapt to different specifications of pharmaceutical packaging films, but also ensure the stability of the cutting process through the cooperation of multiple components, thus meeting the basic requirements of pharmaceutical packaging for precision and safety.
[0006] Furthermore, the lower ends of the electric telescopic rod, the two auxiliary telescopic rods, and the two connecting springs are all fixedly connected to the upper end of the fixed plate, and the upper ends of the electric telescopic rod, the two auxiliary telescopic rods, and the two connecting springs are all fixedly connected to the lower end of the cutter. Through the above technical solutions, the electric telescopic rod provides stable and controllable cutting power, avoiding errors from manual operation; the auxiliary telescopic rod symmetrically supports the cutter, preventing the cutter from tilting during cutting; the connecting spring can buffer the cutting impact force, avoiding tearing or delamination of the brittle pharmaceutical aluminum-plastic composite film, and ensuring the integrity of the film material.
[0007] Furthermore, a sliding groove is provided at the upper end of the middle of the adjacent side of the connecting plate, and sliders are fixedly connected to both sides of the outer wall of the cutter, and the outer walls of the sliders slide with the interior of the corresponding sliding grooves. Through the above technical solution, the slider and the groove form a precise guide, ensuring that the cutter always maintains a straight line during the lifting process, avoiding burrs or skewness in the cut caused by deviation of the cutting trajectory, ensuring that the cut of the medicine packaging film is flat, improving the sealing performance of the bag, and preventing the medicine from absorbing moisture and deteriorating during storage due to sealing failure.
[0008] Furthermore, the two baffles slide against the outer wall of the cutter at one adjacent end, and the two sides of the outer wall of the rotating rod are rotatably connected to the corresponding parts of the two connecting plates. Through the above technical solution, the baffle slides against the cutter during cutting, limiting the pharmaceutical film material from both sides to prevent the film material from shifting back and forth due to the cutting force; the rotating rod converts the sliding friction of the film material transportation into rolling friction, reducing scratches on the thin pharmaceutical film.
[0009] Furthermore, both sides of the outer walls of the two limiting rods are rotatably connected to the inner walls of the corresponding locations of the two connecting plates, and both sides of the inner walls of the two limiting rods are damped rotatably connected to both sides of the outer walls of the two bidirectional threaded rods. Through the above technical solution, the limiting rod can rotate slightly to adapt to the film material conveying angle, avoiding hard contact damage to the film material; the damping rotation characteristics of the bidirectional threaded rod ensure that the position is stable after adjustment and will not loosen due to vibration.
[0010] Furthermore, the lower ends of both limiting rods are provided with connecting grooves, the lower ends of the inner walls of both movable sleeves are slidably connected to the inner walls of the connecting grooves, and the inner walls of both movable sleeves are threadedly connected to both sides of the two bidirectional threaded rods. Through the above technical solution, the rotation of the bidirectional threaded rod can drive the movable sleeve to move synchronously in opposite directions along the connecting groove, adjust the limiting width, and adapt to pharmaceutical packaging films of different widths; the sliding fit between the movable sleeve and the connecting groove ensures a smooth adjustment process, avoids wrinkles or displacement caused by uneven force on the edge of the film material, and improves cutting consistency.
[0011] This utility model has the following beneficial effects: The present invention proposes a cutting mechanism for a composite film bag making device. The limiting rod has a bidirectional threaded rod inside and a threaded engagement with the movable sleeve. The spacing can be adjusted to adapt to different specifications of pharmaceutical packaging films. The movable sleeve slides stably along the connecting groove, which can effectively clamp the edge of the film material to avoid displacement. This ensures the cutting positioning accuracy from the source and prevents insufficient packaging sealing due to size deviation.
[0012] The present invention proposes a cutting mechanism for a composite film bag making device. The rotating connection design of the rotating rod can convert the sliding friction during film material transportation into rolling friction, reducing film material scratches and ensuring smooth transportation. During cutting, the electric telescopic rod provides stable power. The sliding guide of the sliders on both sides of the cutter and the sliding groove of the connecting plate, as well as the synchronous support of the auxiliary telescopic rod, can prevent the cutter from tilting. The fit and sliding of the baffle and the cutter prevent the film material from shifting back and forth. The dual guidance and anti-deviation design improves the cutting accuracy. Attached Figure Description
[0013] Figure 1 This is an isometric view of the cutting mechanism of a composite film bag making device proposed in this utility model; Figure 2 This is a side view of the cutting mechanism of a composite film bag making device proposed in this utility model; Figure 3 This is an exploded view of the cutting mechanism of a composite film bag making device proposed in this utility model. Figure 4 This is a partial structural schematic diagram of the cutting mechanism of a composite film bag making device proposed in this utility model; Figure 5 This is a partial exploded view of the cutting mechanism of a composite film bag making device proposed in this utility model; Figure 6 This is an isometric view of the connecting plate of the cutting mechanism of a composite film bag making device proposed in this utility model.
[0014] Explanation of reference numerals in the attached figures: 1. Connecting plate; 11. Slide groove; 2. Limiting rod; 21. Two-way threaded rod; 22. Connecting groove; 23. Moving sleeve; 3. Fixing plate; 31. Electric telescopic rod; 32. Auxiliary telescopic rod; 33. Connecting spring; 34. Cutter; 35. Slider; 4. Rotating rod; 5. Baffle. Detailed Implementation
[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] Reference Figure 1-6 This utility model provides a specific implementation method: A cutting mechanism for a composite film bag-making device includes two connecting plates 1. Limiting rods 2 are provided at the front end of the upper part and the rear end of the lower part of each adjacent side of the two connecting plates 1. A rotating rod 4 is provided at the rear end of the upper part of each adjacent side of the two connecting plates 1. A fixed plate 3 is provided at the lower end of the middle of each adjacent side of the two connecting plates 1. A bidirectional threaded rod 21 is provided inside each of the two limiting rods 2. Movable sleeves 23 are provided on both sides of the exterior of each of the two limiting rods 2. Two auxiliary telescopic rods 32, two connecting springs 33, and an electric telescopic rod 31 are provided on the upper part of each fixed plate 3. A cutter 34 and two baffles 5 are provided in the middle of each adjacent side of the two connecting plates 1, forming a stable frame-like support structure. The components work together to achieve integrated operation of limiting, conveying, and cutting the pharmaceutical composite film. This mechanism can adapt to different specifications of pharmaceutical packaging films, such as tablet bags and capsule bags, and ensures the stability of the cutting process through the cooperation of multiple components, meeting the basic requirements of precision and safety for pharmaceutical packaging.
[0017] The lower ends of the electric telescopic rod 31, the two auxiliary telescopic rods 32, and the two connecting springs 33 are all fixedly connected to the upper end of the fixed plate 3. The upper ends of the electric telescopic rod 31, the two auxiliary telescopic rods 32, and the two connecting springs 33 are all fixedly connected to the lower end of the cutter 34. The electric telescopic rod 31 provides stable and controllable cutting power to avoid errors caused by manual operation. The auxiliary telescopic rods 32 symmetrically support the cutter 34 to prevent the cutter 34 from tilting during cutting. The connecting springs 33 can buffer the cutting impact force to avoid tearing or delamination of the brittle pharmaceutical aluminum-plastic composite film and ensure the integrity of the film material.
[0018] The upper part of the middle of the adjacent side of the connecting plate 1 is provided with a sliding groove 11. The two sides of the outer wall of the cutter 34 are fixedly connected with sliders 35. The outer wall of the sliders 35 slides with the interior of the corresponding sliding groove 11. The sliders 35 and the sliding groove 11 form a precise guide to ensure that the cutter 34 always maintains a straight movement during the lifting process, avoids burrs or skewness of the cut caused by the deviation of the cutting trajectory, ensures that the cut of the medicine packaging film is flat, improves the sealing performance of the bag, and prevents the medicine from absorbing moisture and deteriorating during storage due to sealing failure.
[0019] The two baffles 5 slide against the outer wall of the cutter 34 at one adjacent end. The two sides of the outer wall of the rotating rod 4 are rotatably connected to the two connecting plates 1 at corresponding positions. When cutting, the baffles 5 slide against the cutter 34 and limit the pharmaceutical film material from both sides to prevent the film material from shifting back and forth due to the cutting force. The rotating rod 4 converts the sliding friction of the film material conveying into rolling friction, reducing scratches on the thin pharmaceutical film.
[0020] Both sides of the outer wall of the two limiting rods 2 are rotatably connected to the inner wall of the corresponding two connecting plates 1. Both sides of the inner wall of the two limiting rods 2 are damped rotatably connected to both sides of the outer wall of the two bidirectional threaded rods 21. The limiting rods 2 can rotate slightly to adapt to the film material conveying angle and avoid hard contact damage to the film material. The damped rotation characteristics of the bidirectional threaded rods 21 ensure that the position is stable after adjustment and will not loosen due to vibration.
[0021] Both limiting rods 2 have connecting grooves 22 at their lower ends. The lower ends of the inner walls of both movable sleeves 23 are slidably connected to the inner walls of the connecting grooves 22. The inner walls of both movable sleeves 23 are threadedly connected to the two sides of the two bidirectional threaded rods 21. The rotation of the bidirectional threaded rods 21 can drive the movable sleeves 23 to move synchronously in opposite directions along the connecting grooves 22, adjusting the limiting width to adapt to different widths of pharmaceutical packaging films, such as oral liquid bags of different specifications. The sliding fit between the movable sleeves 23 and the connecting grooves 22 ensures a smooth adjustment process, avoids wrinkles or displacement caused by uneven force on the edge of the film material, and improves cutting consistency.
[0022] Working principle: The pharmaceutical composite film is guided and conveyed by the rotating rod 4. By rotating the bidirectional threaded rod 21 inside the limiting rod 2, the moving sleeve 23 is driven to adjust the spacing synchronously along the connecting groove 22, accurately clamping the edge of the film to achieve limiting. Then, the electric telescopic rod 31 extends and retracts to provide power, driving the cutter 34 to rise and fall vertically under the stable support of the auxiliary telescopic rod 32 and the guidance of the slider 35 and the slide groove 11. The connecting spring 33 buffers the cutting impact to avoid damage to the film. The baffles 5 on both sides slide against the cutter 34 to prevent the film from deviating. Finally, the cutter 34 returns to its original position after cutting. All components work together to achieve precise, non-destructive, and stable cutting of the pharmaceutical composite film, adapting to continuous bag making processes.
[0023] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.
[0024] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0025] 3. The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A cutting mechanism for a composite film bag making device, comprising two connecting plates (1), characterized in that: Limiting rods (2) are provided at the front end of the upper part and the rear end of the lower part of the two adjacent sides of the two connecting plates (1). Rotating rods (4) are provided at the rear end of the upper part of the two adjacent sides of the two connecting plates (1). Fixed plates (3) are provided at the lower end of the middle part of the two adjacent sides of the two connecting plates (1). Bidirectional threaded rods (21) are provided inside the two limiting rods (2). Moving sleeves (23) are provided on both sides of the two limiting rods (2). Two auxiliary telescopic rods (32), two connecting springs (33) and an electric telescopic rod (31) are provided on the upper part of the fixed plate (3). A cutter (34) and two baffles (5) are provided in the middle part of the two adjacent sides of the two connecting plates (1).
2. The cutting mechanism of the composite film bag making device according to claim 1, characterized in that: The lower ends of the electric telescopic rod (31), the two auxiliary telescopic rods (32) and the two connecting springs (33) are all fixedly connected to the upper end of the fixed plate (3), and the upper ends of the electric telescopic rod (31), the two auxiliary telescopic rods (32) and the two connecting springs (33) are all fixedly connected to the lower end of the cutter (34).
3. The cutting mechanism of the composite film bag making device according to claim 1, characterized in that: The upper end of the middle of the adjacent side of the connecting plate (1) is provided with a sliding groove (11), and the two sides of the outer wall of the cutter (34) are fixedly connected with sliders (35), and the outer wall of the sliders (35) slides with the interior of the corresponding sliding groove (11).
4. The cutting mechanism of the composite film bag making device according to claim 1, characterized in that: The two baffles (5) slide against the outer wall of the cutter (34) at one adjacent end, and the two sides of the outer wall of the rotating rod (4) are rotatably connected to the corresponding positions of the two connecting plates (1).
5. The cutting mechanism of the composite film bag making device according to claim 1, characterized in that: Both sides of the outer walls of the two limiting rods (2) are rotatably connected to the inner walls of the two connecting plates (1) respectively, and both sides of the inner walls of the two limiting rods (2) are damped rotatably connected to the outer walls of the two bidirectional threaded rods (21).
6. The cutting mechanism of the composite film bag making device according to claim 1, characterized in that: The lower ends of the two limiting rods (2) are provided with connecting grooves (22), the lower ends of the inner walls of the two movable sleeves (23) are slidably connected to the inner walls of the connecting grooves (22), and the inner walls of the two movable sleeves (23) are threadedly connected to both sides of the two bidirectional threaded rods (21).