A packaging apparatus

Abstract

The utility model relates to the technical field of packaging equipment, concretely relates to a kind of packaging equipment, it includes bearing frame, for bearing sleeve is equipped with the workpiece of packaging bag;Hot-pressing sealing mechanism, including oppositely arranged support and hot-pressing piece, hot-pressing piece is folded to support towards, to hot-press and melt seal the bag mouth of packaging bag tensioned therebetween;Bag mouth tensioning mechanism, including first cylinder and grabbing piece, when support and hot-pressing piece separate, first cylinder drives grabbing piece to move between support and hot-pressing piece, grabbing piece holds the bag mouth of packaging bag and makes it tension between support and hot-pressing piece, the wrinkle formed by the bag mouth relaxation of the present application is eliminated, make packaging bag keep flat tensioned state in hot-pressing process, ensure that hot-pressing piece and support can apply uniform stable pressure and temperature to bag mouth when folding, to significantly improve the sealing integrity and consistency of hot-melt sealing, avoid the risk of electrolyte leakage or water oxygen invasion caused by poor sealing.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a packaging device. Background Technology

[0002] In the packaging process of high-precision products such as electrode rolls for new energy batteries, the heat-sealing process of the electrode roll packaging bag is directly related to the product's storage stability and usage safety. However, due to fluctuations in the winding tension of the electrode roll itself, differences in the thermal shrinkage rate of the packaging material, and limitations in the dynamic precision of the heat-sealing equipment, localized loosening of the bag opening is prone to occur during the heat-sealing process. This loosening leads to irregular wrinkles at the packaging bag opening during heat fusion bonding, reducing the contact area of ​​the heat-sealing layer and causing uneven pressure distribution, resulting in insufficient fusion of the polymer melt interface. Especially in scenarios like electrode rolls where stringent sealing requirements exist, the sealing defects caused by wrinkles can form microchannels, leading to risks such as electrolyte evaporation and water / oxygen permeation, seriously threatening battery performance and lifespan, and affecting product qualification rates. Utility Model Content

[0003] The purpose of this invention is to provide a packaging device to solve the problem of insufficient packaging caused by irregular wrinkles at the bag opening during the heat sealing process of existing packaging bags.

[0004] The technical solution of this utility model is: a packaging device, comprising: A support frame for supporting workpieces that are covered with a packaging bag; A heat-sealing mechanism includes a support member and a heat-sealing member arranged opposite to each other, wherein the heat-sealing member closes toward the support member to heat-press and seal the opening of the taut packaging bag therebetween; The bag opening tensioning mechanism includes a first cylinder and a gripping member. When the support member is separated from the hot pressing member, the first cylinder drives the gripping member to move between the support member and the hot pressing member. The gripping member grips the bag opening of the packaged bag and tensions it between the support member and the hot pressing member.

[0005] Preferably, a workbench is provided on one side of the support frame, the support member is fixed on the workbench, and the hot-press sealing mechanism includes a bracket and a second cylinder. The second cylinder is fixed on the workbench through the bracket, and the hot-press member is fixed on the piston rod of the second cylinder. The second cylinder drives the hot-press member to move toward or away from the support member.

[0006] Preferably, the support member and the hot-pressing member extend in the same direction and are arranged in parallel.

[0007] Preferably, the hot-press sealing mechanism includes at least one guide rod, which is slidably connected to the bracket in a vertical direction, and the bottom of the guide rod is fixedly connected to the hot-pressing component.

[0008] Preferably, the bag opening tensioning mechanism includes a guide plate, which is fixed to the piston rod of the first cylinder. The guide plate is parallel to the hot pressing component. The gripping components are multiple and are linearly arrayed along the length of the guide plate on the side of the guide plate facing the support frame.

[0009] Preferably, the gripper is a pneumatic gripper used to hold the opening of the packaged bag and keep it in a horizontal closed state.

[0010] Preferably, a limiting groove is provided on the top of the support frame, the limiting groove being used to accommodate and position the workpiece.

[0011] Preferably, the workbench is equipped with a pump body and a hose, one end of the hose is connected to the pump body, and the other end is used to connect to the packaging bag.

[0012] Preferably, the worktable is rotatably connected to rollers, the central axis of the rollers is parallel to the hot pressing component, and the rollers are located between the bearing frame and the support component.

[0013] Compared with the prior art, the advantages of this utility model are: The bag opening tensioning mechanism works in conjunction with the hot-press sealing mechanism. Before hot pressing, the first cylinder drives the gripping component to actively grasp and tension the bag opening, effectively eliminating wrinkles caused by loose bag openings. This ensures that the bag remains flat and taut during hot pressing, and that the hot pressing component and the support component can apply uniform and stable pressure and temperature to the bag opening when they are closed. This significantly improves the sealing integrity and consistency of the hot melt seal, avoiding the risk of electrolyte leakage or water and oxygen intrusion caused by poor sealing. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the workpiece and its packaging state as described in this utility model; Figure 2 This is a schematic diagram of the structure of a packaging device according to the present invention; Figure 3 This is a schematic diagram of the hot-press sealing mechanism described in this utility model; Figure 4 This is a schematic diagram of the bag opening tensioning structure described in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Support frame; 11. Limiting groove; 2. Hot-press sealing mechanism; 21. Support component; 22. Hot-press component; 23. Column; 24. Bracket; 26. Second cylinder; 27. Guide rod; 3. Bag opening tensioning mechanism; 31. First cylinder; 32. Gripping component; 33. Base; 34. Guide plate; 4. Worktable; 5. Vacuum assembly; 51. Pump body; 52. Hose; 6. Roller; 100. Workpiece; 200. Sealing bag. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "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.

[0019] like Figure 1 and Figure 2 As shown, a packaging device includes a support frame 1 and a worktable 4. The support frame 1 is located on one side of the worktable 4 and is used to support a workpiece 100 covered with a packaging bag 200. The worktable 4 is equipped with a heat-sealing mechanism 2 and a bag opening tensioning mechanism 3. The heat-sealing mechanism 2 includes a support member 21 and a heat-pressing member 22 arranged opposite to each other. The heat-pressing member 22 closes towards the support member 21 to heat-press and seal the bag opening of the packaging bag 200 that is tensioned therebetween. The bag opening tensioning mechanism 3 includes a first cylinder 31 and a gripping member 32. When the support member 21 separates from the heat-pressing member 22, the first cylinder 31 drives the gripping member 32 to move between the support member 21 and the heat-pressing member 22. The gripping member 32 grips the bag opening of the packaging bag 200 and tensions it between the support member 21 and the heat-pressing member 22.

[0020] A limiting groove 11 is provided on the top of the support frame 1 to support the workpiece 100. In this embodiment, the workpiece 100 to be heat-sealed is an electrode roll. The operator places the electrode roll with heat-sealing tape on it into the limiting groove 11 of the support frame 1, with the opening of the packaging bag 200 facing the heat-sealing mechanism 2. The operator stretches the opening of the packaging bag 200 into a flat shape and sends the opening of the packaging bag 200 to the opening tensioning mechanism 3. The opening tensioning mechanism 3 clamps the opening of the heat-sealing tape and passes it between the support member 21 and the heat-pressing member 22.

[0021] like Figure 3 As shown, the heat-sealing mechanism 2 includes a support column 23 and a bracket 24. The support column 23 is vertically fixed on the worktable 4, and the bracket 24 is horizontally fixed on the top of the support column 23. In this embodiment, there are two support columns 23, which are fixed to the bottom of the bracket 24 near both ends. The bracket 24 is equipped with a second cylinder 26, the cylinder body of which is fixed on the bracket 24, and the piston rod of which extends vertically downward. The heat-sealing component 22 is fixed on the piston rod of the second cylinder 26, and the support component 21 is fixed on the worktable 4 corresponding to the heat-sealing component 22. In this embodiment, both the heat-sealing component 22 and the support component 21 are constructed as elongated strips extending in the same direction, realizing the overall synchronous heat-sealing of the bag opening of the sealed bag 200, avoiding uneven sealing caused by overlapping seams or pressure differences during segmented sealing, and ensuring that the entire bag opening forms a continuous, gapless fusion seal layer.

[0022] Preferably, the hot-pressing component 22 is a heat-sealing knife with an embedded heating element to raise the temperature to a set temperature and transfer heat to the packaging bag 200. Under the push of the second cylinder 26, the hot-pressing component 22 applies downward pressure to form a sealing line.

[0023] Preferably, the bracket 24 is provided with several guide rods 27, which are slidably connected to the bracket 24 in the vertical direction, and the bottom end of the guide rod 27 is fixed to the hot press member 22. This prevents the hot press member 22 from tilting, shaking, or lateral misalignment caused by the clearance of the drive mechanism or uneven force, ensuring that it is precisely aligned with the support member 21 below. More preferably, the guide rod 27 is fitted with a spring, one end of which is fixed to the bottom of the bracket 24 and the other end is fixed to the top of the hot press member 22. This avoids problems such as local poor sealing (low pressure area) or damage to the bag opening (high pressure area) caused by uneven pressure, thereby forming a sealing edge with consistent width and reliable sealing.

[0024] like Figure 4As shown, a base 33 is fixed on the workbench 4, and a first cylinder 31 is mounted on the base 33. The cylinder body of the first cylinder 31 is fixed on the base 33 and located on the side of the heat-pressing component 22 away from the support frame 1. The piston rod of the first cylinder 31 extends and retracts horizontally to move closer to or away from the support frame 1. A guide plate 34 is fixed on the piston rod of the first cylinder 31. The guide plate 34 is parallel to the heat-pressing component 22. Several gripping components 32 are fixed on the side of the guide plate 34 facing the support frame 1. The gripping components 32 are linearly arrayed along the length of the guide plate 34, so that the bag opening can be evenly stressed when tightened, preventing some parts from being tightened while others remain loose. In this embodiment, the gripping components 32 are pneumatic grippers. Several pneumatic grippers are used to grip the bag opening of the packaging bag 200, keeping the bag opening in a horizontal closed state, ensuring that the bag opening is in a flat, taut, and edge-aligned state before entering the heat-sealing process.

[0025] The workbench 4 is rotatably connected to rollers 6. The central axis of rollers 6 is parallel to the heat-pressing component 22. Rollers 6 are located between the support frame 1 and the support component 21. Rollers 6 are used to support the bag opening of the sealing bag 200. During the process of the bag opening tensioning mechanism 3 pulling the bag opening horizontally through the heat-sealing area, sliding friction between the lower surface of the bag opening and the workbench 4 surface is avoided.

[0026] When the operator pulls the opening of the packaging bag 200 into a straight line, the first cylinder 31 moves the guide plate 34 toward the opening of the packaging bag 200, while the gripping members 32 open. Several gripping members 32 close and clamp the opening of the packaging bag 200, and the first cylinder 31 moves the guide plate 34 between the heat-pressing member 22 and the support member 21, causing the opening of the packaging bag 200 to be in a taut state. The second cylinder 26 drives the heat-pressing member 22 to descend and perform heat-press sealing on the opening of the packaging bag 200.

[0027] The workbench 4 is equipped with a vacuum assembly 5 for evacuating the packaging bag 200. In this embodiment, the vacuum assembly 5 includes a pump body 51 and a hose 52. The pump body 51 is fixed on the workbench 4, and one end of the hose 52 is connected to the pump body 51, while the other end is connected to the packaging bag 200. The pump body 51 generates negative pressure, which evacuates the packaging bag 200 through the hose 52. Preferably, the hose 52 is connected to the packaging bag 200 via a push-pull quick-connect coupling to ensure the airtightness of the packaging bag 200 during vacuuming.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A packaging device, characterized in that, include: The support frame (1) is used to support the workpiece (100) covered with a packaging bag (200). The heat-sealing mechanism (2) includes a support member (21) and a heat-sealing member (22) arranged opposite to each other. The heat-sealing member (22) closes toward the support member (21) to heat-press and seal the opening of the taut packaging bag (200). The bag opening tensioning mechanism (3) includes a first cylinder (31) and a gripper (32). When the support member (21) is separated from the heat-pressing member (22), the first cylinder (31) drives the gripper (32) to move between the support member (21) and the heat-pressing member (22). The gripper (32) grips the bag opening of the packaged bag (200) and tensions it between the support member (21) and the heat-pressing member (22).

2. The packaging device according to claim 1, characterized in that: The support frame (1) has a workbench (4) on one side. The support member (21) is fixed on the workbench (4). The hot-press sealing mechanism (2) includes a bracket (24) and a second cylinder (26). The second cylinder (26) is fixed on the workbench (4) through the bracket (24). The hot-pressing member (22) is fixed on the piston rod of the second cylinder (26). The second cylinder (26) drives the hot-pressing member (22) to move toward or away from the support member (21).

3. The packaging device according to claim 2, characterized in that: The support member (21) and the hot pressing member (22) extend in the same direction and are arranged in parallel.

4. The packaging device according to claim 2, characterized in that: The hot-press sealing mechanism (2) includes at least one guide rod (27), which is slidably connected to the bracket (24) in the vertical direction, and the bottom of the guide rod (27) is fixedly connected to the hot-pressing component (22).

5. The packaging device according to claim 4, characterized in that: The bag opening tensioning mechanism (3) includes a guide plate (34), which is fixed to the piston rod of the first cylinder (31). The guide plate (34) is parallel to the hot pressing member (22). There are multiple gripping members (32), which are linearly arrayed along the length of the guide plate (34) on the side of the guide plate (34) facing the support frame (1).

6. The packaging device according to claim 5, characterized in that: The gripper (32) is a pneumatic gripper used to hold the opening of the packaging bag (200) and keep it in a horizontal closed state.

7. The packaging device according to claim 1, characterized in that: The top of the support frame (1) has a limiting groove (11) for accommodating and positioning the workpiece (100).

8. The packaging device according to claim 2, characterized in that: The workbench (4) is equipped with a pump body (51) and a hose (52). One end of the hose (52) is connected to the pump body (51), and the other end is used to connect to the packaging bag (200).

9. The packaging device according to claim 2, characterized in that: The workbench (4) is rotatably connected to a roller (6), the central axis of which is parallel to the hot press (22), and the roller (6) is located between the bearing frame (1) and the support member (21).

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