Vacuum heat sealer for pipette tips

Abstract

This utility model relates to a pipette tip vacuum heat sealing machine, comprising a body with two vacuum packaging zones on its upper side. A vacuum cover, capable of switching between the two zones, is located above the body. The vacuum cover and the vacuum packaging zones cooperate to form a vacuum chamber. Two parallel sealing support strips, one in front of the other, are located within each vacuum packaging zone. A liftable sealing heating strip, cooperating with the sealing support strips, is located inside the vacuum cover. A control mechanism for controlling the lifting and lowering of the sealing heating strip is located inside the vacuum cover. This utility model of a pipette tip vacuum heat sealing machine features a novel structure, reasonable design, and convenient practicality. It ensures that air is completely removed from the packaging bag, preventing residual gas and improving the sealing effect, aseptic properties, and storage stability of the product. The dual-station structure reduces waiting time and improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment, and in particular to a vacuum heat sealing machine for pipette tips. Background Technology

[0002] Pipette tips need to be sealed in packaging bags to prevent contamination during storage and transportation. Vacuum heat sealers are used to vacuum-seal the packaging bags containing the pipette tips. However, current vacuum heat sealers perform heat sealing and vacuuming simultaneously within the vacuum chamber. This can easily lead to situations where the gas inside the packaging bag is not completely eliminated before the bag opening is sealed, leaving residual gas inside and affecting the sealing effect. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a vacuum heat sealing machine for pipette tips, which can ensure that the air inside the sealing bag is completely removed, avoid gas residue inside the sealing bag, and improve the sealing effect.

[0004] This utility model is achieved using the following solution: a pipette tip vacuum heat sealing machine, comprising a body, with two vacuum packaging zones on the upper side of the body, and a vacuum cover above the body that can switch between the two vacuum packaging zones. The vacuum cover and the vacuum packaging zones cooperate to form a vacuum chamber. The vacuum packaging zones are provided with two parallel sealing support strips arranged one in front and one behind. The vacuum cover is provided with a liftable sealing heating strip that works in conjunction with the sealing support strips. The vacuum cover is provided with a control mechanism for controlling the lifting and lowering of the sealing heating strip.

[0005] Furthermore, the control mechanism includes a crossbar fixedly connected to the upper side of the sealing heating strip, and electromagnetic push rods for driving the crossbar to rise and fall are provided above both ends of the crossbar.

[0006] Furthermore, the front and rear sides of the vacuum cover are respectively connected to the front and rear sides of the machine body through a pair of parallel connecting rods; the front and rear sides of the machine body are respectively provided with telescopic push rods for driving one of the connecting rods to swing, one end of the telescopic push rod is hinged to the connecting rod and the other end is hinged to the machine body.

[0007] Furthermore, the telescopic push rod is a cylinder or an electric push rod.

[0008] Furthermore, a pressure bar parallel to the sealing support bar is provided above the sealing support bar, and the two ends of the pressure bar are provided with bent portions hinged to the two ends of the sealing support bar. The hinge portion of the bent portion is provided with a torsion spring that pushes the pressure bar down.

[0009] Furthermore, the vacuum cover has air holes, which are connected to the vacuum pump inside the machine body via air pipes.

[0010] Furthermore, a rubber pad is embedded on the upper side of the sealing support strip.

[0011] Furthermore, the vacuum cover has a sealing ring at the bottom edge and handles on the front and rear sides.

[0012] Compared with the prior art, the present invention has the following advantages: The present invention has a novel and reasonable structure for the pipette tip vacuum heat sealing machine, which is convenient and practical. It can ensure that the air in the sealing bag is completely removed, avoid gas residue in the sealing bag, improve the sealing effect, and enhance the sterility and storage stability of the product; the dual-station structure reduces waiting time and improves efficiency.

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0014] Figure 1 This is a front view of an embodiment of the present utility model; Figure 2 This is a partial cross-sectional view of an embodiment of the present utility model; Figure 3 yes Figure 2 View from the center (K ​​direction); The numbers in the diagram are explained as follows: 100-body, 110-vacuum packaging area, 120-sealing support strip, 121-rubber pad, 130-connecting rod, 140-telescopic push rod, 150-pressure rod, 151-bending part, 152-torsion spring, 200-vacuum cover, 210-sealing heating strip, 220-crossbar, 230-electromagnetic push rod, 240-vent, 250-handle, 300-pipette tip, 400-sealing bag. Detailed Implementation

[0015] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] like Figures 1-3As shown, a pipette tip vacuum heat sealing machine includes a body 100. The upper side of the body has two vacuum packaging zones 110, and a vacuum cover 200 that can switch between the two vacuum packaging zones is provided on the upper part of the body. The vacuum cover and the vacuum packaging zone cooperate to form a vacuum chamber. The vacuum packaging zone has two parallel sealing support bars 120 arranged one in front of the other. The vacuum cover has a liftable sealing heating bar 210 that works in cooperation with the sealing support bars. The vacuum cover has a control mechanism for controlling the lifting and lowering of the sealing heating bar. In use, several packaging bags equipped with pipette tips are placed in the vacuum packaging area, with the bag openings resting on the sealing support strips. The vacuum cover is then closed, and the vacuum chamber is evacuated to remove all air from the packaging bags. Next, the control mechanism moves the sealing heating strip downwards, and the sealing heating strip and sealing support strip work together to press and heat-seal the bag openings. After heat-sealing, air is introduced into the vacuum chamber, the vacuum cover is opened, and the process is switched to another vacuum packaging area for further vacuum heat-sealing. This invention features a dual-station structure, allowing for the switching of two vacuum packaging areas. While one area is performing vacuum heat-sealing, the other area can be used for bag loading and unloading, improving efficiency. Furthermore, the design of evacuating air before heat-sealing ensures that all air is removed from the packaging bags, preventing residual gas and improving the sealing effect, product sterility, and storage stability.

[0018] In this embodiment, the control mechanism includes a crossbar 220 fixedly connected to the upper side of the sealing heating strip, and electromagnetic push rods 230 for driving the crossbar to rise and fall are provided above both ends of the crossbar; when the electromagnetic push rod is energized, the push rod extends and pushes the crossbar downward; when the electromagnetic push rod is de-energized, it is reset by a spring and the crossbar is raised.

[0019] In this embodiment, the front and rear sides of the vacuum cover are connected to the front and rear sides of the machine body via a pair of parallel connecting rods 130. The front and rear sides of the machine body are each provided with a telescopic push rod 140 for driving one of the connecting rods to swing. One end of the telescopic push rod is hinged to the connecting rod, and the other end is hinged to the machine body. Using the telescopic push rod to drive the connecting rod to swing allows for control of the vacuum cover switching between two workstations, which is convenient and labor-saving.

[0020] In this embodiment, the telescopic push rod is either a cylinder or an electric push rod, with an electric push rod being preferred.

[0021] In this embodiment, a pressure rod 150 parallel to the sealing support strip 120 is provided above the sealing support strip 120. The pressure rod has bent portions 151 hinged to the ends of the sealing support strip at both ends. A torsion spring 152 is provided at the hinged portion of the bent portion to push the pressure rod downwards. The pressure rod presses down on the opening of the sealed bag, ensuring a smooth opening during the heat-sealing process and preventing wrinkles.

[0022] In this embodiment, the vacuum cover has an air hole 240, which is connected to a vacuum pump inside the machine body via an air pipe. This vacuum pump is a bidirectional vacuum pump, capable of both evacuating and filling air.

[0023] In this embodiment, a rubber pad 121 is embedded on the upper side of the sealing support strip 120.

[0024] In this embodiment, a sealing ring is provided at the bottom edge of the vacuum cover, and handles 250 are provided on the front and rear sides of the vacuum cover.

[0025] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0026] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0027] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0028] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A vacuum heat sealing machine for pipette tips, characterized in that: The device includes a main body with two vacuum packaging zones on the upper side. A vacuum cover that can switch between the two vacuum packaging zones is located on the top of the main body. The vacuum cover and the vacuum packaging zones cooperate to form a vacuum chamber. Two parallel sealing support bars are arranged one in front of the other in the vacuum packaging zone. A liftable sealing heating bar that works in conjunction with the sealing support bars is located inside the vacuum cover. A control mechanism for controlling the lifting and lowering of the sealing heating bar is located inside the vacuum cover.

2. The pipette tip vacuum heat sealing machine according to claim 1, characterized in that: The control mechanism includes a crossbar fixedly connected to the upper side of the sealing heating strip, and electromagnetic push rods for driving the crossbar to rise and fall are provided above both ends of the crossbar.

3. The pipette tip vacuum heat sealing machine according to claim 1, characterized in that: The front and rear sides of the vacuum cover are respectively connected to the front and rear sides of the machine body by a pair of parallel connecting rods; the front and rear sides of the machine body are respectively provided with telescopic push rods for driving one of the connecting rods to swing, one end of the telescopic push rod is hinged to the connecting rod and the other end is hinged to the machine body.

4. The pipette tip vacuum heat sealing machine according to claim 3, characterized in that: The telescopic push rod is a cylinder or an electric push rod.

5. The pipette tip vacuum heat sealing machine according to claim 1, characterized in that: Above the sealing support strip is a pressure rod parallel to the sealing support strip. Both ends of the pressure rod are provided with bent portions hinged to both ends of the sealing support strip. The hinged portions of the bent portions are provided with torsion springs that push the pressure rod down.

6. The pipette tip vacuum heat sealing machine according to claim 1, characterized in that: The vacuum cover has an air hole, which is connected to the vacuum pump inside the machine body through an air pipe.

7. The pipette tip vacuum heat sealing machine according to claim 1, characterized in that: A rubber pad is embedded on the upper side of the sealing support strip.

8. The pipette tip vacuum heat sealing machine according to claim 1, characterized in that: The vacuum cover has a sealing ring at the bottom edge and handles at the front and back.

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