A medicine packaging film positioning and cutting device

Abstract

The utility model discloses a medicine packaging film positioning cutting device, include: base plate has the support surface of level, cutting guide groove is located the support surface of base plate, and its length direction is parallel to the width direction of film belt when unwinding, cutting assembly includes the sliding seat of sliding arrangement along cutting guide groove length direction and the cutter of the cutting edge downward extension and can embed in cutting guide groove on installing at this sliding seat, a pair of pressing mechanism, symmetry sets up in the both sides of cutting guide groove, and the pressing mechanism has the pressure bar of can press on the support surface of base plate. The utility model can flatten and position the film when cutting to facilitate cutting, reduce cutting skew, improve cutting speed and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical packaging technology, specifically to a pharmaceutical packaging film positioning and cutting device. Background Technology

[0002] In automated packaging production lines for granular drugs (such as tablets, capsules, and granules), blister packaging (PTP) is a widely used method. In this process, rigid polyvinyl chloride (PVC) film serves as the primary forming material. The film is heated and vacuum-formed to create blister packs that hold the medication, which are then heat-sealed with aluminum foil or other capping materials to complete the packaging.

[0003] To maintain continuous high-speed production, PVC film is typically supplied to packaging equipment in large rolls. When a roll of PVC film is about to run out, it must be replaced promptly to ensure the production line continues to operate. Changing rolls involves releasing the tail end of the previous roll from the equipment, cutting off any deformed, wrinkled, or irregular portions, and then connecting it to the head end of the new roll using specialized tape to form a continuous film strip that can be reintroduced into the production line for continued use.

[0004] However, the cutting operation currently used in the industry is mostly done manually. Operators typically use handheld tools (such as paper cutters) and rely on visual inspection and experience to cut. During cutting, the film cannot be completely flattened, easily leading to skewed cut lines. If the skew is significant, when the film is pulled into subsequent forming and heat-sealing stages after being joined to the beginning of the next roll of film via tape, the skew will exceed the film belt's designed movement range. Therefore, multiple adjustments are often required during cutting, demanding a high level of operator skill, consuming considerable time, and impacting production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a positioning and cutting device for pharmaceutical packaging film, which can flatten and position the film during cutting to facilitate cutting, reduce cutting skew, and improve cutting speed and efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a positioning and cutting device for pharmaceutical packaging film, comprising: The substrate has a horizontal support surface; A cutting guide groove is provided on the support surface of the substrate, and its length direction is parallel to the width direction of the film strip during unwinding. The cutting assembly includes a sliding seat that is slidably disposed along the length of the cutting guide groove, and a cutting blade mounted on the sliding seat, with the blade extending downward and capable of being embedded in the cutting guide groove; A pair of clamping mechanisms are symmetrically arranged on both sides of the cutting guide groove, and the clamping mechanism has a pressure strip that can press against the support surface of the substrate.

[0007] A further improvement of this invention is that one end of the pressure bar is rotatably connected to the substrate via a hinge shaft, allowing the pressure bar to rotate around the hinge shaft between a pressing position and a releasing position.

[0008] A further improvement of this utility model is that a receiving groove is provided on the substrate below the pressure strip, and an elastic reset member is provided in the receiving groove. The elastic reset member acts on the lower end face of the pressure strip to provide an elastic force that tends to lift the pressure strip away from the support surface. A locking part is provided at the end of the pressure strip away from the hinge axis, and a fixing part that can be detachably connected to the locking part is provided on the substrate.

[0009] A further improvement of this utility model is that the locking part includes a slidably disposed locking rod, and the fixing part is a locking hole into which the locking rod is inserted.

[0010] A further improvement of this utility model is that a guide seat is fixed on one side of the substrate, and a guide rod is slidably connected to the guide seat along the length direction of the cutting guide groove, and the sliding seat is connected to one end of the guide rod.

[0011] A further improvement of this utility model is that support rollers are respectively provided on both sides of the substrate along its length direction and on the outside of the pressing mechanism. The top of the support rollers is higher than the support surface of the substrate, so as to lift it up during the film conveyor belt conveying, so that a gap is formed between its lower surface and the support surface.

[0012] A further improvement of this utility model is that an elastic pressure pad layer is provided on the lower end surface of the pressure strip.

[0013] A further improvement of this invention is that the substrate is provided with a plurality of parallel alignment lines that are parallel to the length direction of the film strip during unwinding.

[0014] A further improvement of this invention is that the length of the cutting guide groove is greater than the width of the film strip.

[0015] The beneficial effects of this utility model are as follows: This invention provides a linear motion trajectory for the cutter by setting a substrate with a cutting guide groove and a cutting component that can slide along the groove, reducing cutting skew. Furthermore, a pair of clamping mechanisms can reliably flatten and fix the film strip on the substrate before cutting, effectively preventing the film strip from moving during the cutting process, facilitating its flattening, and significantly improving cutting quality and efficiency.

[0016] This invention achieves rapid clamping and fixing by rotatably connecting the pressure strip to the substrate and incorporating an elastic reset component. This allows the pressure strip to automatically spring back to the release position upon unlocking, eliminating the need for manual lifting and making operation easier and faster. The detachable connection between the locking rod and the locking hole enables quick clamping and securing, ensuring the pressure strip stably presses against the film strip during cutting to prevent slippage, while also making unlocking very convenient.

[0017] This invention utilizes support rollers to lift the film belt as it passes through the device area, creating a gap between the lower surface of the film belt and the substrate support surface. This effectively prevents direct friction between the film belt and the substrate surface during transport, avoids scratches on the film belt surface, and protects the integrity of the film material. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of this utility model.

[0019] Figure 2 This is a side view sectional diagram of the structure of this utility model.

[0020] Figure 3 This is a side cross-sectional view of the locking hole structure of this utility model.

[0021] In the figure, 1-substrate, 2-cutting guide groove, 3-sliding seat, 4-cutter, 5-pressure strip, 6-elastic reset component, 7-locking part, 8-locking rod, 9-locking hole, 10-guide seat, 11-guide rod, 12-support roller, 13-elastic pressure pad layer. Detailed Implementation

[0022] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: A positioning and cutting device for pharmaceutical packaging film, comprising: Substrate 1 has a horizontal support surface; Cutting guide groove 2 is provided on the support surface of substrate 1, and its length direction is parallel to the width direction of the film strip during unwinding. The cutting assembly includes a sliding seat 3 that is slidably disposed along the length of the cutting guide groove 2, and a cutter 4 mounted on the sliding seat 3, with the blade extending downward and capable of being embedded in the cutting guide groove 2; the cutter 4 is mounted on the sliding seat 3 by a detachable means (e.g., screw fixing or snap-fit ​​connection); A pair of clamping mechanisms are symmetrically arranged on both sides of the cutting guide groove 2 along the preset width direction. The clamping mechanisms have a pressure strip 5 that can press against the support surface of the substrate 1. The pressure strip 5 is arranged parallel to the cutting guide groove 2.

[0024] Optionally, the pressure strip 5 can be placed directly on the membrane strip by its weight.

[0025] Optionally, one end of the pressure strip 5 is rotatably connected to the substrate 1 via a hinge shaft, allowing the pressure strip 5 to rotate between a pressing position and a releasing position around the hinge shaft. This facilitates operation of the pressure strip. The operator can easily lift the pressure strip (releasing position) to place or adjust the film strip, and then conveniently press it down (pressing position) to secure it.

[0026] A guide seat 10 is fixed to one side of the substrate 1. A guide rod 11 is slidably connected to the guide seat 10 along the length of the cutting guide groove 2. A sliding seat 3 is connected to one end of the guide rod 11. The cooperation between the sliding seat 3 and the guide rod 11 effectively prevents the cutter from deviating or shaking during sliding. Even with a large film width or when cutting with force, the precise straightness of the cutting path can be guaranteed, further improving the cutting quality. Two limiting rings are provided on the guide rod 11. The limiting rings block the sliding stroke of the sliding seat 3 on the guide rod 11, ensuring that the movement range of the cutter 4 is always within the effective length of the cutting guide groove 2. This precisely limits the starting and ending positions of the cutting and effectively prevents the cutter 4 from leaving the guide groove 2 or colliding with the groove end. Optionally, the upper end of the sliding seat 3 is provided with a protrusion or handle structure for easy gripping or force application.

[0027] The lower end face of the pressure strip 5 is provided with an elastic pressure pad layer (such as rubber, silicone, or soft plastic) 13, which increases the elasticity and friction of the contact surface between the pressure strip and the film strip. This can not only press the film strip more evenly and gently, avoiding hard contact that could damage or break the film, but also provide greater static friction, more effectively preventing the film strip from slipping or shifting during cutting, and further ensuring cutting accuracy.

[0028] The substrate has several parallel alignment lines (not shown in the figure) spaced at intervals, parallel to the length direction of the film strip during unwinding. This provides the operator with an intuitive visual reference. When placing the film strip, the operator can quickly and easily align the edge of the film strip with the alignment lines visually, ensuring the correct position of the film strip on the device (i.e., the width direction is perpendicular to the cutting guide groove). This lays a good foundation for subsequent precise cutting, reduces cutting deviations caused by improper placement, and shortens adjustment time.

[0029] The length of the cutting guide groove is greater than the width of the film strip. This ensures that, regardless of whether the film strip is within the groove length, the cutter can begin cutting from outside one edge of the film strip and end cutting from outside the other edge. Its depth is sufficient to accommodate the tip of the cutter 4 and prevent collision with the substrate 1.

[0030] Example 2: Combination Figures 1-3 It can be seen that the structure of this embodiment is roughly the same as that of Embodiment 1, the difference being: One end of the pressure strip 5 is rotatably connected to the base plate 1 via a hinge shaft. A receiving groove is provided on the base plate 1 below the pressure strip 5. An elastic reset member 6 (preferably a spring) is provided in the receiving groove. The elastic reset member 6 acts on the lower end face of the pressure strip 5, providing an elastic force that causes the pressure strip 5 to tend to lift away from the support surface. A locking part 7 is provided at the end of the pressure strip 5 away from the hinge shaft. A fixing part that can be detachably connected to the locking part 7 is provided on the base plate 1.

[0031] The pressure strip 5 has a rectangular parallelepiped structure. One end is provided with a locking part 7, which engages with the locking hole 9 of the base plate 1 to achieve a tight clamping and fixing (see...). Figure 3 The other end is provided with a hinge portion. Specifically, the hinge portion is a protruding, downward-facing structure on the lower surface of the pressure strip 5 at this end. A matching hinge groove is provided on the base plate 1 at the position corresponding to the hinge portion. The hinge portion of the pressure strip 5 is rotatably connected to the hinge groove of the base plate 1 via a horizontally set hinge shaft.

[0032] Furthermore, a gap of 0.5 mm or more is provided between the hinge protrusion and the inner wall of the hinge groove of the substrate 1, and a gap of 0.5 mm or more is provided between the locking protrusion and the side wall of the substrate 1. This ensures that when the pressure bar 5 rotates around the hinge axis (switching between the pressing position and the releasing position), its hinge and locking parts will not make rigid contact or interfere with the substrate 1, thereby achieving smooth and unobstructed rotation.

[0033] Preferably, the locking part 7 includes a slidably disposed locking rod 8, and the fixing part is a locking hole 9 into which the locking rod 8 is inserted. When the pressure bar 5 is pressed down, the locking rod 8 can be inserted into the locking hole 9 to achieve mechanical locking.

[0034] In existing automated packaging production lines for granular drugs, the next station after the unwinding station is usually the tensioning station, which is used to tighten the roll. The device provided in this application can be fixedly installed at this tensioning station.

[0035] At this time, support rollers 12 are rotatably connected to both sides of the substrate 1 along its length direction and located outside the pressing mechanism. The top of the support rollers 12 is higher than the support surface of the substrate 1, and is used to lift it up during film conveying so that a gap is formed between its lower surface and the support surface.

[0036] By using support rollers positioned on both sides of the substrate and higher than the support surface, the film belt is lifted as it passes through the device area, creating a gap between the lower surface of the film belt and the substrate support surface. This effectively avoids direct friction between the film belt and the substrate surface during transport, preventing scratches on the film belt surface and protecting the integrity of the film material. Only during the cutting operation is it necessary to press the film belt down and fix it to the substrate surface.

[0037] A tensioning roller mechanism (a conventional structure in the prior art) is provided below the substrate 1. After the lower surface of the film strip contacts and passes through the two support rollers 12, it bypasses the tensioning roller mechanism located below the substrate 1 for tensioning, and then enters the subsequent process. This device can be integrated into an automated packaging production line. Through the action of the elastic reset member 6, the pressure strip remains in a raised state when not being cut, thus not hindering the normal conveying movement of the film strip.

[0038] The working principle of the positioning and cutting device for pharmaceutical packaging film provided by the utility model is as follows: During operation, the film strip to be cut (such as the tail of an old film roll) is first laid flat on the support surface of the substrate 1. Using the alignment line on the substrate 1 as a reference, the film strip is manually flattened so that its width edge is roughly aligned with the alignment line. Then, the operator rotates the pressure strips 5, which are symmetrically arranged on both sides of the cutting guide groove 2, from the release position to the pressing position, and locks the pressure strips 5 by using the cooperation of the locking rod 8 and the locking hole 9. At this time, the elastic pressure pad layer 13 at the lower end of the pressure strip reliably presses and fixes the film strip to the support surface of the substrate 1. After fixing, the operator holds the sliding seat 3 and pushes the cutting assembly along the length of the cutting guide groove 2, so that the cutter 4 slides along the cutting guide groove 2. The cutter 4 starts to cut from outside one edge of the film strip, slides across the entire width of the film strip, and finally ends outside the other edge, completing a straight cut. After cutting, pull out the locking lever 8 to unlock the pressure strip 5. Under the action of the elastic reset member 6, the pressure strip 5 automatically springs up to the release position. Then, install the new roll of film tape in place and connect the beginning of the new roll of film tape (which can be cut in the same way as the previous roll of film tape as needed) to the cut end, which improves cutting efficiency and ease of operation.

[0039] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning and cutting device for pharmaceutical packaging film, characterized in that, include: The substrate (1) has a horizontal support surface; Cutting guide groove (2) is provided on the support surface of the substrate (1), and its length direction is parallel to the width direction of the film strip during unwinding; The cutting assembly includes a sliding seat (3) that is slidably disposed along the length of the cutting guide groove (2), and a cutter (4) mounted on the sliding seat (3), with the blade extending downward and able to be embedded in the cutting guide groove (2). A pair of clamping mechanisms are symmetrically arranged on both sides of the cutting guide groove (2), and the clamping mechanism has a pressure strip (5) that can press against the support surface of the substrate (1).

2. The pharmaceutical packaging film positioning and cutting device according to claim 1, characterized in that: One end of the pressure bar (5) is rotatably connected to the base plate (1) via a hinge shaft, so that the pressure bar (5) can rotate around the hinge shaft between the pressing position and the releasing position.

3. The pharmaceutical packaging film positioning and cutting device according to claim 2, characterized in that: The substrate (1) is provided with a receiving groove below the pressure strip (5). An elastic reset member (6) is provided in the receiving groove. The elastic reset member (6) acts on the lower end face of the pressure strip (5) to provide an elastic force that makes the pressure strip (5) tend to lift away from the support surface. A locking part (7) is provided at one end of the pressure strip (5) away from the hinge axis. A fixing part that can be detachably connected to the locking part (7) is provided on the substrate (1).

4. The pharmaceutical packaging film positioning and cutting device according to claim 3, characterized in that: The locking part (7) includes a sliding locking rod (8), and the fixing part is a locking hole (9) for the locking rod (8) to be inserted.

5. The pharmaceutical packaging film positioning and cutting device according to claim 1, characterized in that: A guide seat (10) is fixed on one side of the substrate (1), and a guide rod (11) is slidably connected on the guide seat (10) along the length direction of the cutting guide groove (2). The sliding seat (3) is connected to one end of the guide rod (11).

6. The pharmaceutical packaging film positioning and cutting device according to claim 1, characterized in that: The substrate (1) is provided with support rollers (12) on both sides along its length and on the outside of the pressing mechanism. The top of the support rollers (12) is higher than the support surface of the substrate (1) and is used to lift it up during film conveying so that a gap is formed between its lower surface and the support surface.

7. The pharmaceutical packaging film positioning and cutting device according to claim 1, characterized in that: An elastic pad layer (13) is provided on the lower end face of the pressure strip (5).

8. The pharmaceutical packaging film positioning and cutting device according to claim 1, characterized in that: The substrate (1) has several parallel alignment lines that are parallel to the length direction of the film strip during unwinding.

9. The pharmaceutical packaging film positioning and cutting device according to claim 1, characterized in that: The length of the cutting guide groove (2) is greater than the width of the film strip.

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