Bulk drug packaging heat-sealing device

Abstract

The utility model discloses a bulk drug packaging heat-sealing device which comprises a supporting plate, a fixed heating strip is transversely and fixedly arranged on one face of the supporting plate, a movable heating strip is arranged on one side of the fixed heating strip in parallel, and the movable heating strip is in press-fit contact with the working face of a fixed heating piece through a driving piece. A cooling pipe is arranged above the fixed heating strip, and the air outlet direction of the cooling pipe faces the position between the contact faces of the fixed heating strip and the movable heating strip. The raw material medicine packaging bag heat-sealing device can conduct heat-sealing treatment on a raw material medicine packaging bag, the cooling waiting time after hot melting sealing is shortened, then the microcosmic sagging phenomenon is relieved, the strength of the packaging bag is improved, and the stability and safety of raw material medicine are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of active pharmaceutical ingredient (API) production technology, specifically to an API packaging heat sealing device. Background Technology

[0002] In the pharmaceutical manufacturing industry, active pharmaceutical ingredients (APIs) are the core active ingredients in drug production, and the integrity of their packaging directly affects drug quality and patient safety. API packaging must be airtightly sealed in a clean environment to prevent the active ingredients from absorbing moisture, oxidizing, or becoming contaminated by microorganisms. Currently, the industry commonly uses heat-sealing machines to seal API composite film packaging bags. This equipment uses a cylinder to drive a pair of relatively movable heating strips to perform a pressing operation, utilizing heat conduction to bring the surface of the packaging material to a melting temperature (typically 150-180℃) to achieve a heat-sealed seal.

[0003] While existing sealing machines can achieve basic sealing, during the static cooling stage after heat-melt sealing (cooling time 3-8 seconds), the molten sealing layer material (mostly PE or PP-based heat-sealing layers) undergoes microscopic sagging under gravity due to its rheological properties. This phenomenon leads to uneven material thickness at the sealing line, resulting in a decrease in local tensile strength in that area. Subsequent transport vibrations or stacking pressures can easily cause microcracks. For active pharmaceutical ingredients (APIs) requiring long-term storage, this structural defect can lead to leakage, causing the powder to absorb moisture and clump, resulting in ineffectiveness, and excessive levels of oxidative degradation products of the active ingredient, affecting the stability and safety of the API within its shelf life. Utility Model Content

[0004] The purpose of this invention is to provide a heat-sealing device for raw material drug packaging, which can heat-seal raw material drug packaging bags, reduce the waiting time for cooling after heat-melt sealing, thereby reducing microscopic sagging, improving the strength of the packaging bag, and ensuring the stability and safety of the raw material drug.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a heat-sealing device for raw material packaging, including a support plate, a fixed heating strip is horizontally fixed on one side of the support plate, a movable heating strip is parallel to one side of the fixed heating strip, the movable heating strip achieves pressing contact with the working surface of the fixed heating strip through a driving component, a cooling pipe is provided above the fixed heating strip, and the air outlet direction of the cooling pipe is towards the contact surface between the fixed heating strip and the movable heating strip.

[0006] A further improvement of this utility model is that the driving component includes a cylinder disposed on the support plate, and a support rod is provided between the extended end of the cylinder and the fixed heating strip, which is erected on the support plate. Therefore, a driving rod is rotatably connected to the support rod. One end of the driving rod is hinged to the extended end of the cylinder, and the other end is fixedly connected to the moving heating strip.

[0007] A further improvement of this utility model is that the cooling pipe is arranged parallel to the fixed heating strip, and has a plurality of exhaust holes along its length, with the exhaust holes venting towards the contact surface between the fixed heating strip and the moving heating strip.

[0008] A further improvement of this invention is that the exhaust port of the cylinder is connected to the air inlet of the cooling pipe.

[0009] A further improvement of this invention is that the pore density of the exhaust holes is distributed in a gradient along the length of the cooling pipe, with the pore spacing in the middle section being smaller than that in the two end sections.

[0010] A further improvement of this utility model is that the cooling pipe is provided with a magnetically attractive area, and the magnetically attractive area is provided with at least two magnetic elements.

[0011] A further improvement of this utility model is that there are two support rods and two drive rods, symmetrically arranged on the support plate.

[0012] A further improvement of this utility model is that the fixed heating strip is disposed on the front side of the support plate, the cylinder is fixedly disposed on the back side of the support plate, and the support plate is provided with a clearance opening to facilitate the cylinder's protruding end to pass through.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention enables heat sealing of raw material drug packaging bags. By setting up cooling pipes to rapidly cool the packaging bags after heat sealing, the natural cooling time after heat fusion sealing is reduced, thereby mitigating microscopic sagging, improving the strength of the packaging bags, and ensuring the stability and safety of the raw materials.

[0015] The air inlet of the cooling pipe of this invention is connected to the exhaust port of the cylinder, so that the gas discharged when the cylinder is reset can be reused. This utilizes the compressed air that was originally wasted, eliminating the need for additional power and improving energy efficiency. Furthermore, the separation action of the dynamic heating strip enables automatic synchronous cooling.

[0016] The cooling pipe of this utility model is arranged horizontally. In actual use, it can be used in conjunction with the fixed heating strip to limit the upper end of the bag body, so as to avoid the upper end of the bag body naturally bending after being removed from the hand due to excessive gap between the fixed heating strip and the moving heating strip, which would affect the heat sealing effect.

[0017] The present invention has a magnetically oriented area on the cooling pipe, and at least two magnetic elements are provided on the magnetically oriented area. The bag is further fixed by being attracted to the cooling pipe by the magnetic elements, thereby improving the stability of heat sealing.

[0018] Existing heating bars have a structure that makes it easier for heat to dissipate at both ends, while the cooling speed in the middle section is relatively slow. In this invention, the pore density of the exhaust holes is distributed in a gradient along the length of the cooling pipe, and the pore spacing in the middle section is smaller than that in the two ends, which can increase the air output in the middle section and enhance the cooling effect on the middle section of the heating bar. Attached Figure Description

[0019] Figure 1 This is a side view of the structure of this utility model.

[0020] Figure 2 This is a side view sectional diagram of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the cooling pipe structure of this utility model.

[0023] In the diagram, 1-support plate, 2-fixed heating strip, 3-moving heating strip, 4-cooling pipe, 5-cylinder, 6-support rod, 7-drive rod, 8-exhaust port, 9-magnetic component, 10-extension rod of cylinder. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: Combination Figures 1-4 It is known that a heat-sealing device for raw material packaging includes a support plate 1. A fixed heating strip 2 is horizontally fixed on one side of the support plate 1, and a movable heating strip 3 is parallel to one side of the fixed heating strip 2. The movable heating strip 3 achieves pressing contact with the working surface of the fixed heating strip 2 through a driving component. A cooling pipe 4 is provided above the fixed heating strip 2, and the air outlet direction of the cooling pipe 4 is towards the contact surface between the fixed heating strip 2 and the movable heating strip 3. Optionally, the movable heating strip 3 only serves as a simple pressing strip and does not perform a heating function. Single-sided heat sealing is achieved only through the fixed heating strip 2, and it can be selected as needed.

[0026] The driving component includes a cylinder 5 mounted on a support plate 1. A support rod 6, erected on the support plate 1, is provided between the extended end of the cylinder 5 and the fixed heating strip 2. A driving rod 7 is rotatably connected to the support rod 6. One end of the driving rod 7 is hinged to the extended end of the cylinder 5, and the other end is fixedly connected to the moving heating strip 3. The moving heating strip 3 and the fixed heating strip 2 are conventional heating strips used for heat sealing in the prior art. They include a housing and a heating surface mounted on the housing. The driving rod 7 is connected to the housing of the moving heating strip 3.

[0027] The cooling pipe 4 is arranged parallel to the fixed heating strip 2, and has several exhaust holes 8 along its length. The exhaust direction of the exhaust holes 8 is towards the contact surface between the fixed heating strip 2 and the moving heating strip 3.

[0028] Preferably, the cooling pipe 4 is positioned above the side of the fixed heating strip 2 away from the support plate 1, so that the cooling pipe 4 and the fixed heating strip 2 can cooperate to restrict the upper end of the packaging bag body between them.

[0029] The exhaust port of cylinder 5 is connected to the air inlet of cooling pipe 4. Cylinder 5 is a conventional cylinder in the prior art capable of telescopic function, with an air inlet for intake and an exhaust port for exhaust. The support plate 1 has a through-hole, and the exhaust port of cylinder 5 is connected to the air inlet of cooling pipe 4 through the through-hole via a guide pipe.

[0030] The pore density of the exhaust pores 8 is distributed in a gradient along the length of the cooling pipe 4, with the pore spacing in the middle section being smaller than that in the two end sections. Preferably, the cooling pipe 4 is divided into three sections, with the pore spacing in the middle section being 2 cm and the pore spacing on the edge sections on both sides of the middle section being 4 cm.

[0031] The cooling pipe 4 is provided with a magnetic attraction area, and the magnetic attraction area is provided with at least two magnetic elements 9. Preferably, the cooling pipe 4 is made of iron material, and the magnetic elements 9 are magnets.

[0032] There are two support rods 6 and two drive rods 7, symmetrically arranged on the support plate 1. Preferably, only one drive rod 7 is driven by a cylinder.

[0033] The heating strip 2 is set on the front of the support plate 1, and the cylinder 5 is fixedly set on the back of the support plate 1. The support plate 1 is provided with a clearance opening to facilitate the extension end of the cylinder 5 to pass through.

[0034] Preferably, the support plate 1 is provided with a height-adjustable tray, on which the packaging bag is placed.

[0035] The working principle of the heat-sealing device for raw material packaging provided by the utility model is as follows: In use, the upper end of the packaging bag is moved between the fixed heating strip 2 and the cooling pipe 4, and the upper end of the packaging bag is fixed by the magnetic suction component 9. The cylinder 5 is started to drive the moving heating strip 3 to press against the fixed heating strip 2. The fixed heating strip 2 is started and heated to heat-seal the opening of the packaging bag. After heat sealing is completed, the cylinder 5 is reset, the moving heating strip 3 and the fixed heating strip 2 are separated. At the same time, compressed gas is discharged from the exhaust port of the cylinder 5. The compressed gas enters the cooling pipe 4 and is sprayed from the exhaust hole 8 on it onto the heat-sealing area of ​​the packaging bag. The compressed gas carries heat to cool it down, reducing the natural cooling time after heat sealing, thereby reducing microscopic sagging, improving the strength of the packaging bag, and ensuring the stability and safety of the raw material.

[0036] 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 heat-sealing device for packaging active pharmaceutical ingredients, characterized in that: The system includes a support plate (1), on one side of which a fixed heating strip (2) is fixedly arranged horizontally. A moving heating strip (3) is arranged parallel to one side of the fixed heating strip (2). The moving heating strip (3) is pressed into contact with the working surface of the fixed heating strip (2) by a driving component. A cooling pipe (4) is provided above the fixed heating strip (2). The air outlet direction of the cooling pipe (4) is towards the contact surface between the fixed heating strip (2) and the moving heating strip (3).

2. The heat-sealing device for raw material packaging according to claim 1, characterized in that: The driving component includes a cylinder (5) mounted on the support plate (1). A support rod (6) is provided between the extended end of the cylinder (5) and the fixed heating strip (2) and is erected on the support plate (1). A driving rod (7) is rotatably connected to the support rod (6). One end of the driving rod (7) is hinged to the extended end of the cylinder (5), and the other end is fixedly connected to the moving heating strip (3).

3. A heat-sealing device for raw material packaging according to claim 1 or 2, characterized in that: The cooling pipe (4) is arranged parallel to the fixed heating strip (2), and has a number of exhaust holes (8) along its length. The exhaust holes (8) are directed towards the contact surface between the fixed heating strip (2) and the moving heating strip (3).

4. The heat-sealing device for raw material packaging according to claim 2, characterized in that: The exhaust port of the cylinder (5) is connected to the air inlet of the cooling pipe (4).

5. The heat-sealing device for raw material packaging according to claim 3, characterized in that: The pore density of the exhaust pores (8) is distributed in a gradient along the length of the cooling pipe (4), with the pore spacing in the middle section being smaller than that in the two end sections.

6. The heat-sealing device for raw material packaging according to claim 1, characterized in that: The cooling pipe (4) is provided with a magnetic attraction area, and the magnetic attraction area is provided with at least two magnetic attraction elements (9).

7. The heat-sealing device for raw material packaging according to claim 2, characterized in that: Two support rods (6) and two drive rods (7) are provided, symmetrically arranged on the support plate (1).

8. A heat-sealing device for raw material packaging according to claim 2, characterized in that: The fixed heating strip (2) is disposed on the front side of the support plate (1), the cylinder (5) is fixedly disposed on the back side of the support plate (1), and the support plate (1) is provided with a clearance opening to facilitate the cylinder (5) to extend out.

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