PE packaging bag sealing device

Abstract

The utility model relates to the technical field of PE packaging bag processing, and discloses a PE packaging bag sealing device which comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a shell, an air cylinder is fixedly installed at the inner bottom of the shell, the telescopic end of the air cylinder is fixedly connected with a sliding plate, an upper heat sealing cutter is fixedly installed on the lower side of the sliding plate, and a lower heat sealing cutter is fixedly installed on the lower side of the sliding plate. A lower heat sealing cutter is fixedly connected to the upper side of the bottom plate, a connecting plate is fixedly connected to the outer side of an upper heat sealing cutter, a sliding rod is slidably connected to the interior of the connecting plate, a pulling plate is fixedly connected to the upper side of the sliding rod, and a spring is arranged between the connecting plate and the pulling plate. According to the device, the pull block is manually pulled to enable the extension block to slide in the extension groove, the limiting block and the limiting groove are matched to achieve length locking, the action range of the extrusion block can be rapidly adjusted, the device can accurately adapt to PE packaging bags with different widths, equipment parts do not need to be replaced, and the universality of equipment is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of honey harvesting device technology, and in particular to a PE packaging bag sealing device. Background Technology

[0002] PE packaging bags are made from thermoplastic resin obtained by polymerizing ethylene. They are transparent plastic bags that can be used for packaging clothing, bags, electronic products, etc. When sealing PE packaging bags, a heat molding method is used for sealing.

[0003] Traditional PE packaging bag sealing devices mainly consist of a heating blade, a pressure mechanism, a transmission system, and a control system. During operation, the packaging bag is conveyed and positioned, the heating blade heats up and pressurizes to complete the sealing, and then it is output by the conveyor belt. It is mostly an intermittent operation, which has problems such as unstable sealing quality and low efficiency.

[0004] However, existing PE packaging bag sealing devices mostly use fixed-size extrusion block structures, which are difficult to adapt to the sealing needs of packaging bags of different widths. When changing the packaging bag specifications, it is necessary to manually disassemble and replace the entire extrusion assembly, or reposition it through a complex mechanical adjustment mechanism. This is not only cumbersome and time-consuming, but also prone to causing the sealing area to shift due to insufficient adjustment precision, resulting in sealing failure or damage to the packaging bag. In addition, traditional sealing devices generally lack efficient heat dissipation systems. During continuous operation, the heat sealing knife is prone to temperature runaway due to high temperature accumulation: on the one hand, high temperature will cause the PE material to melt excessively, causing deformation, thinning, or even damage at the sealing point, affecting the sealing strength and sealing performance; on the other hand, the heat sealing knife being in a high-temperature state for a long time will accelerate the aging of components and shorten the service life of the equipment.

[0005] Therefore, a PE packaging bag sealing device is provided to solve the problems mentioned in the background art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a PE packaging bag sealing device, which aims to improve the problems of existing technology that are difficult to adapt to the sealing needs of packaging bags of different widths and lack efficient heat dissipation leading to temperature runaway.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a PE packaging bag sealing device, comprising a base plate, a housing fixedly connected to the upper side of the base plate, a cylinder fixedly installed at the bottom inner part of the housing, a sliding plate fixedly connected to the telescopic end of the cylinder, an upper heat sealing knife fixedly installed on the lower side of the sliding plate, a lower heat sealing knife fixedly connected to the upper side of the base plate, a connecting plate fixedly connected to the outer side of the upper heat sealing knife, a sliding rod slidably connected inside the connecting plate, a pulling plate fixedly connected to the upper side of the sliding rod, a spring provided between the connecting plate and the pulling plate, a squeezing block fixedly connected to the lower side of the sliding rod, an extension block provided inside the squeezing block, an extension groove opened inside the squeezing block, a limit block fixedly connected to the outer side of the extension block, a limit groove opened inside the squeezing block, and a heat dissipation component provided inside the housing.

[0008] Furthermore, the heat dissipation assembly includes a central cylinder, which is fixedly connected to both sides of the interior of the housing. A cooling fan is fixedly installed inside the central cylinder, and the cooling fan is fixedly installed on both sides of the interior of the housing. A dustproof net is fixedly installed on the upper surface of the central cylinder. A connecting pipe is fixedly connected to the outer wall of the central cylinder. A blower hood is fixedly installed on the front side of the housing, and the side of the connecting pipe away from the central cylinder is fixedly connected to the rear side of the blower hood.

[0009] Furthermore, the spring is disposed on the outside of the slide bar, the upper side of the spring is fixedly connected to the lower side of the pull plate, and the side of the spring away from the pull plate is fixedly connected to the connecting plate.

[0010] Furthermore, the limiting block is slidably connected inside the limiting groove, and the extension block is slidably connected inside the extension groove.

[0011] Furthermore, a pull block is fixedly connected to the side of the extension block away from the extrusion block.

[0012] Furthermore, the lower side of the extension block and the lower side of the extrusion block are located on the same horizontal plane.

[0013] Furthermore, the dustproof mesh is positioned directly above the cooling fan.

[0014] Furthermore, a controller is fixedly installed on the upper side of the housing, and the controller is electrically connected to the cylinder, the upper heat sealing knife, the lower heat sealing knife, and the cooling fan.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by manually pulling the pull block, the extension block slides in the extension groove. The length is locked in conjunction with the limiting block and the limiting groove. The range of action of the extrusion block can be quickly adjusted, enabling the device to accurately adapt to PE packaging bags of different widths without the need to replace equipment parts. This effectively improves the versatility of the equipment and reduces the investment cost and debugging time of enterprise production equipment.

[0017] 2. In this utility model, the air drawn in by the cooling fan is filtered by the dustproof net and then guided to the heat sealing area through the connecting pipe and the blower hood. The rapid cooling not only accelerates the solidification of the PE material at the sealing point and improves the sealing quality, but also reduces the temperature of the heat sealing knife in time, reduces the wear and tear on the equipment caused by high temperature, extends the service life of the heat sealing knife, and ensures the long-term stable operation of the sealing device. Attached Figure Description

[0018] Figure 1 This is a perspective view of a PE packaging bag sealing device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the housing of a PE packaging bag sealing device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the centralized cylinder structure of a PE packaging bag sealing device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the extension block structure of a PE packaging bag sealing device proposed in this utility model;

[0022] Figure 5 This is a partial structural schematic diagram of a PE packaging bag sealing device proposed in this utility model.

[0023] Legend:

[0024] 1. Base plate; 2. Housing; 3. Cylinder; 4. Sliding plate; 5. Upper heat sealing knife; 6. Lower heat sealing knife; 7. Connecting plate; 8. Slide rod; 9. Spring; 10. Extrusion block; 11. Extension block; 12. Extension groove; 13. Pulling block; 14. Limiting groove; 15. Limiting block; 16. Heat dissipation assembly; 161. Cooling fan; 162. Dustproof net; 163. Centralized cylinder; 164. Connecting pipe; 165. Blower hood; 17. Controller; 18. Pulling plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of a PE packaging bag sealing device, comprising a base plate 1, a housing 2 fixedly connected to the upper side of the base plate 1, a cylinder 3 fixedly installed at the bottom inner part of the housing 2, a sliding plate 4 fixedly connected to the telescopic end of the cylinder 3, an upper heat sealing knife 5 fixedly installed on the lower side of the sliding plate 4, a lower heat sealing knife 6 fixedly connected to the upper side of the base plate 1, a connecting plate 7 fixedly connected to the outer side of the upper heat sealing knife 5, a sliding rod 8 slidably connected inside the connecting plate 7, a pulling plate 18 fixedly connected to the upper side of the sliding rod 8, a spring 9 provided between the connecting plate 7 and the pulling plate 18, the spring 9 being located on the outer side of the sliding rod 8, and the upper side of the spring 9 fixedly connected to the lower part of the pulling plate 18. On the side, the side of the spring 9 away from the pull plate 18 is fixedly connected to the connecting plate 7. The lower side of the slide rod 8 is fixedly connected to the pressing block 10. An extension block 11 is provided inside the pressing block 10. The lower side of the extension block 11 is on the same horizontal plane as the lower side of the pressing block 10. A pull block 13 is fixedly connected to the side of the extension block 11 away from the pressing block 10. An extension groove 12 is opened inside the pressing block 10. A limit block 15 is fixedly connected to the outer side of the extension block 11. A limit groove 14 is opened inside the pressing block 10. The limit block 15 is slidably connected inside the limit groove 14. The extension block 11 is slidably connected inside the extension groove 12. A heat dissipation component 16 is provided inside the housing 2.

[0027] Specifically, firstly, the effective range of the extrusion block 10 needs to be adjusted according to the actual width of the PE packaging bag. Manually pull the pull block 13 to drive the extension block 11 to slide within the extension groove 12 of the extrusion block 10. During this process, the limiting block 15 fixed to the outside of the extension block 11 will slide synchronously within the limiting groove 14 of the extrusion block 10. When the extension block 11 slides to the appropriate position, the limiting block 15 engages with the corresponding locking position of the limiting groove 14, thereby locking the length of the extension block 11. After adjusting the effective range of the extrusion block 10, place the PE packaging bag flat on the lower heat sealing knife 6, ensuring that the sealing part of the packaging bag is accurately aligned with the blade head of the lower heat sealing knife 6, preparing for subsequent sealing operations. After placing the packaging bag, start the controller 17 to control the upper heat sealing knife 5 and the lower heat sealing knife 6 respectively. Blade 6 begins preheating, and the heat-sealing blade gradually heats up according to a preset program. When the temperature reaches the set value, the telescopic end of cylinder 3 extends, pushing the sliding plate 4 downward. The sliding plate 4 drives the connected upper heat-sealing blade 5 to move towards the packaging bag. At the same time, the upper heat-sealing blade 5 drives the sliding rod 8 through the connecting plate 7, thereby causing the extrusion block 10 to descend synchronously. During the descent, the extrusion block 10 contacts the packaging bag first, applying pressure to both sides of the sealing area and compacting the edges of the packaging bag. At this time, the spring 9, which is sleeved on the outside of the sliding rod 8, is compressed and undergoes elastic deformation, providing a buffer force for the extrusion block 10 and preventing damage to the packaging bag due to excessive pressure. As cylinder 3 continues to descend, the spring 9 is further compressed until the upper heat-sealing blade 5 contacts the lower heat-sealing blade 6, melting the PE material through high temperature and completing the sealing operation.

[0028] Reference Figures 2-3 The heat dissipation assembly 16 includes a central cylinder 163, which is fixedly connected to both sides of the inside of the housing 2. A cooling fan 161 is fixedly installed inside the central cylinder 163 and is fixedly installed on both sides of the inside of the housing 2. A dustproof net 162 is fixedly installed on the upper surface of the central cylinder 163 and is located directly above the cooling fan 161. A connecting pipe 164 is fixedly connected to the outer wall of the central cylinder 163. A blower hood 165 is fixedly installed on the front side of the housing 2. The side of the connecting pipe 164 away from the central cylinder 163 is fixedly connected to the rear side of the blower hood 165. A controller 17 is fixedly installed on the upper side of the housing 2. The controller 17 is electrically connected to the cylinder 3, the upper heat sealing knife 5, the lower heat sealing knife 6 and the cooling fan 161.

[0029] Specifically, after sealing is completed, the controller 17 immediately controls the cooling fan 161 located in the central cylinder 163 to start, drawing in air from the outside. The air is filtered through the dustproof net 162 on the upper surface of the central cylinder 163 to remove dust and other impurities, and then transported to the blower hood 165 through the connecting pipe 164. Finally, the blower hood 165 guides the cooling airflow to the heat-sealing area to cool the area that has just been sealed and the heat-sealing knife, causing the molten PE material to solidify quickly and improve the sealing strength. At the same time, the telescopic end of the cylinder 3 retracts, driving the sliding plate 4, the upper heat-sealing knife 5, and the extrusion block 10 to move upward and reset. The spring 9 returns to its natural state, and the extrusion block 10 separates from the packaging bag. Thus, a complete sealing operation is completed, and the next packaging bag placement and sealing operation can be carried out.

[0030] Working principle: When using this device, according to the width of the packaging bag, manually pull the pull block 13 to make the extension block 11 slide in the extension groove 12. The length is locked by the sliding of the limiting block 15 in the limiting groove 14. Adjust the range of action of the extrusion block 10, place the PE packaging bag on the lower heat sealing knife 6, and align the sealing part with the knife head. After the controller 17 is started, it preheats the upper heat sealing knife 5 and the lower heat sealing knife 6. When the heat sealing knife reaches the set temperature, the controller 17 drives the cylinder 3 to extend, pushes the sliding plate 4 downward, and drives the upper heat sealing knife 5 to move towards the packaging bag. The upper heat sealing knife 5 drives the sliding rod 8 and the extrusion block 10 to descend synchronously through the connecting plate 7. The extrusion block 10 contacts the packaging bag first and squeezes both sides of the sealing area. At this time, the spring 9 is compressed to provide buffer force to prevent excessive extrusion. The cylinder 3 continues to descend, and the spring 9 is further compressed. The upper heat sealing knife 5 contacts the lower heat sealing knife 6 and completes the sealing by melting the PE material at high temperature.

[0031] After heat sealing is completed, the controller 17 controls the cooling fan 161 in the central cylinder 163 to operate. The cooling fan 161 draws in external air, which is filtered by the dust filter 162 and then cooled by the connecting pipe 164 and the blower hood 165. At the same time, the cylinder 3 retracts, which drives the upper heat sealing knife 5 and the extrusion block 10 to rise and reset. The spring 9 returns to its natural state, and the extrusion block 10 separates from the packaging bag.

[0032] 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 embodiments, those skilled in the art can still modify the technical solutions described in the foregoing 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 PE packaging bag sealing device, comprising a base plate (1), characterized in that: A housing (2) is fixedly connected to the upper side of the base plate (1). A cylinder (3) is fixedly installed at the bottom inner part of the housing (2). A sliding plate (4) is fixedly connected to the telescopic end of the cylinder (3). An upper heat sealing knife (5) is fixedly installed on the lower side of the sliding plate (4). A lower heat sealing knife (6) is fixedly connected to the upper side of the base plate (1). A connecting plate (7) is fixedly connected to the outer side of the upper heat sealing knife (5). A sliding rod (8) is slidably connected inside the connecting plate (7). A sliding rod (8) is fixedly connected to the upper side of the sliding rod (8). A pull plate (18) is provided, and a spring (9) is provided between the connecting plate (7) and the pull plate (18). A pressing block (10) is fixedly connected to the lower side of the slide rod (8). An extension block (11) is provided inside the pressing block (10). An extension groove (12) is opened inside the pressing block (10). A limit block (15) is fixedly connected to the outer side of the extension block (11). A limit groove (14) is opened inside the pressing block (10). A heat dissipation component (16) is provided inside the housing (2).

2. The PE packaging bag sealing device according to claim 1, characterized in that: The heat dissipation assembly (16) includes a central cylinder (163), which is fixedly connected to both sides of the inside of the housing (2). A cooling fan (161) is fixedly installed inside the central cylinder (163), and the cooling fan (161) is fixedly installed on both sides of the inside of the housing (2). A dustproof net (162) is fixedly installed on the upper surface of the central cylinder (163). A connecting pipe (164) is fixedly connected to the outer wall of the central cylinder (163). A blower hood (165) is fixedly installed on the front side of the housing (2). The side of the connecting pipe (164) away from the central cylinder (163) is fixedly connected to the rear side of the blower hood (165).

3. The PE packaging bag sealing device according to claim 1, characterized in that: The spring (9) is located on the outside of the slide bar (8). The upper side of the spring (9) is fixedly connected to the lower side of the pull plate (18), and the side of the spring (9) away from the pull plate (18) is fixedly connected to the connecting plate (7).

4. The PE packaging bag sealing device according to claim 1, characterized in that: The limiting block (15) is slidably connected inside the limiting groove (14), and the extension block (11) is slidably connected inside the extension groove (12).

5. A PE packaging bag sealing device according to claim 1, characterized in that: A pull block (13) is fixedly connected to the side of the extension block (11) away from the extrusion block (10).

6. A PE packaging bag sealing device according to claim 1, characterized in that: The lower side of the extension block (11) and the lower side of the extrusion block (10) are on the same horizontal plane.

7. A PE packaging bag sealing device according to claim 2, characterized in that: The dustproof net (162) is located directly above the cooling fan (161).

8. A PE packaging bag sealing device according to claim 1, characterized in that: A controller (17) is fixedly installed on the upper side of the housing (2). The controller (17) is electrically connected to the cylinder (3), the upper heat sealing knife (5), the lower heat sealing knife (6), and the cooling fan (161).

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