PE sealing machine

Abstract

This utility model provides a PE sealing machine, including a workbench for supporting PE bags. A support frame is fixedly connected above the workbench. A double-headed hydraulic rod is fixedly connected to one side of the workbench. Sealing brackets are fixedly connected to the movable ends of both sides of the double-headed hydraulic rod. T-shaped rods are fixedly connected to the lower sides of both ends of the sealing brackets. Multiple sets of parallel connecting rods are rotatably connected to both sides of the T-shaped rods. An edge extrusion frame is rotatably connected to the other end of the parallel connecting rods. Multiple drive wheels are rotatably connected to both sides of the edge extrusion frame. A traction belt is driven to the outside of the drive wheels. Multiple synchronous pulleys are rotatably connected to one end of one of the parallel connecting rods. The edge extrusion frame is driven to move to both sides by the double-headed hydraulic rod, so that the PE bag sealing opening is completely flattened. With the synchronous extrusion of the traction belt, it is ensured that there are no wrinkles at the bag opening before heat sealing. The traction motor further flattens the bag opening through the synchronous pulleys and synchronous belt, improving the sealing integrity and completely avoiding air leakage after sealing.

Description

Technical Field

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

[0002] The need for compression sealing in polyethylene (PE) materials is primarily related to their physical properties, application scenarios, and industrial requirements. Firstly, as a thermoplastic, PE possesses excellent flexibility, chemical resistance, and insulation properties, making it widely used in packaging, construction, electronics, and energy. However, PE itself lacks self-adhesive properties. When manufacturing products such as films, pipes, or partitions, compression sealing is essential to seal edges and joints, ensuring structural integrity and functionality. For instance, in the packaging industry, PE plastic bags require heat sealing or mechanical sealing to create a closed space, preventing moisture, oxidation, or leakage of the contents. If the compression seam on both sides of a PE plastic bag is uneven, it can lead to incomplete packaging, affecting the storage of the contents. Therefore, a compression sealing machine that ensures a smooth seam is needed. Utility Model Content

[0003] In view of this, the present invention aims to provide a PE sealing machine to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0004] The technical solution of this utility model embodiment is implemented as follows: it includes a workbench for supporting PE bags, a support frame is fixedly connected above the workbench, a double-headed hydraulic rod is fixedly connected to one side of the workbench, a sealing bracket is fixedly connected to the movable ends on both sides of the double-headed hydraulic rod, a T-shaped rod is fixedly connected to the lower side of both ends of the sealing bracket, multiple sets of parallel connecting rods are rotatably connected to both sides of the T-shaped rod, an edge extrusion frame is rotatably connected to the other end of the parallel connecting rod, multiple drive wheels are rotatably connected to both sides of the edge extrusion frame, and a traction belt is driven to the outside of the drive wheels.

[0005] In some embodiments, one end of the parallel connecting rod on one side is rotatably connected to multiple synchronous pulleys, which are connected by a synchronous belt drive. One end of the lower synchronous pulley is fixedly connected to a drive wheel on one side. One end of the parallel connecting rod on one side is fixedly connected to a traction motor, and one end of the synchronous pulley on the other side is fixedly connected to the power output end of the traction motor.

[0006] In some embodiments, a lower pressure plate is fixedly connected below the edge extrusion frame, and one end of the lower pressure plate is slidably connected to the inner side of the tension belt.

[0007] In some embodiments, the two ends of the T-shaped rod are fixedly connected to a rotating shaft, and one end of the rotating shaft and a parallel connecting rod on one side is rotatably connected to a spring.

[0008] In some embodiments, heat-sealing pressure rods are slidably connected to both sides of the sealing bracket, and spring 2 is fixedly connected to the top of the heat-sealing pressure rods and the top of the sealing bracket.

[0009] In some embodiments, a heat sealing host is fixedly connected above the pressure sealing bracket, and a heat sealing plate is fixedly connected below the heat sealing pressure rod. One end of multiple heat sealing plates is electrically connected to the heat sealing host through a power supply line.

[0010] In some embodiments, a clamping rod is slidably connected to the middle of the sealing bracket, and a spring is fixedly connected to the top of the clamping rod and the top of the sealing bracket.

[0011] In some embodiments, a negative pressure suction cup is fixedly connected inside the clamping rod, a vacuum pump is fixedly connected to one side of the worktable, and the vacuum pump inlet is fixedly connected to the negative pressure suction cup through a pipe.

[0012] The present invention has the following advantages due to the adoption of the above technical solution:

[0013] 1. A PE compression sealing machine, wherein the edge extrusion frame is driven to move to both sides by a double-headed hydraulic rod, so that the PE bag compression opening is completely flattened. With the synchronous extrusion of the traction belt, it is ensured that there are no wrinkles at the bag opening before heat sealing. The traction motor further flattens the bag opening through the synchronous wheel and synchronous belt, thereby improving the sealing integrity and completely avoiding air leakage after compression sealing.

[0014] 2. A PE sealing machine, wherein the PE bag wrapping area is pre-fixed by a clamping rod, which is elastically pressed down by a spring, and contacts the bag body earlier than the edge extrusion frame. Combined with the heat sealing plate driven by the heat sealing pressure rod, the machine clamps the bag up and down synchronously, forming a two-stage positioning mechanism, which completely eliminates the risk of PE bag displacement during the sealing process and ensures sealing accuracy.

[0015] 3. A PE sealing machine, which is linked to a vacuum pump via a negative pressure suction cup: when the clamping rod moves outward after sealing, the PE bag is adsorbed by negative pressure and pulled in the opposite direction. If the sealing is not qualified, the bag can be easily pulled open, realizing the instant detection of sealing strength and eliminating additional quality inspection steps.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is the main view of the present invention.

[0019] Figure 2 This is a rear view structural diagram of the present invention;

[0020] Figure 3 This is a diagram of the parallel connecting rod installation structure of this utility model;

[0021] Figure 4 This is a structural diagram of the edge extrusion frame of this utility model.

[0022] Figure 5 This is a structural diagram of one side of the edge extrusion frame of this utility model.

[0023] Figure label:

[0024] 1. Workbench; 2. Support frame; 3. PE bag; 4. Double-headed hydraulic rod; 5. Sealing bracket; 6. Clamping rod; 7. Heat sealing main unit; 8. Power supply line; 9. Negative pressure suction cup; 10. Vacuum pump; 11. Spring 1; 12. Heat sealing lower pressure rod; 13. Heat sealing plate; 14. T-shaped rod; 15. Spring 2; 16. Parallel connecting rod; 17. Rotating shaft; 18. Spring 3; 19. Traction motor; 20. Edge extrusion frame; 21. Drive wheel; 22. Traction belt; 23. Synchronous pulley; 24. Synchronous belt; 25. Lower pressure plate. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example 1:

[0028] like Figure 1-5As shown, a PE sealing machine includes a workbench 1 for supporting a PE bag 3. A support frame 2 is fixedly connected above the workbench 1. A double-headed hydraulic rod 4 is fixedly connected to one side of the workbench 1. Sealing brackets 5 are fixedly connected to the movable ends of the double-headed hydraulic rod 4 on both sides. T-shaped rods 14 are fixedly connected to the lower sides of both ends of the sealing brackets 5. Multiple sets of parallel connecting rods 16 are rotatably connected to both sides of the T-shaped rods 14. An edge extrusion frame 20 is rotatably connected to the other end of the parallel connecting rods 16. Multiple drive wheels 21 are rotatably connected to both sides of the edge extrusion frame 20. A traction belt 22 is connected to the outer side of the drive wheels 21.

[0029] When in use, the PE bag 3 containing the workpiece is installed on the support frame 2. The support frame 2 has extended guard plates on both sides to position the workpiece on the PE bag 3. At this time, the two sides of the PE bag 3 can be pressed together. Then the double-headed hydraulic rod 4 can retract inward, which will cause the four edge extrusion frames 20 above and the four edge extrusion frames 20 below to be squeezed by the traction straps 22 installed on the two edge extrusion frames 20 respectively.

[0030] Then the double-headed hydraulic rod 4 continues to move downwards, which allows the four edge extrusion frames 20 on the same side to move to both sides in pairs, flattening the compression opening on one side of the PE bag 3. This ensures that the interfaces on both sides of the PE bag 3 are completely sealed during subsequent compression sealing, preventing any air leakage.

[0031] In this embodiment, one end of the parallel connecting rod 16 on one side is rotatably connected to a plurality of synchronous pulleys 23, and the synchronous pulleys 23 are connected to each other by a synchronous belt 24. One end of the lower synchronous pulley 23 is fixedly connected to a drive wheel 21 on one side. One end of the parallel connecting rod 16 on one side is fixedly connected to a traction motor 19, and one end of the synchronous pulley 23 on the other side is fixedly connected to the power output end of the traction motor 19.

[0032] After the edge compression frame 20 is moved into place, the traction motor 19 is started to continue to flatten the PE bag 3 to both sides, which can further make the PE bag 3 more flat at the pressing point.

[0033] In this embodiment, a lower pressure plate 25 is fixedly connected below the edge extrusion frame 20, and one end of the lower pressure plate 25 is slidably connected to the inner side of the tension belt 22;

[0034] The pressure plate 25 can squeeze the pull belt 22 downwards, keeping the area below the pull belt 22 flat and preventing wrinkles from appearing at the edge of the PE bag 3 where it is pressed together.

[0035] In this embodiment, the two ends of the T-shaped rod 14 are fixedly connected to a rotating shaft 17, and the rotating shaft 17 and one end of the parallel connecting rod 16 on one side are rotatably connected to a spring 18.

[0036] Spring 3 18 can cause the outwardly rotating and unfolded parallel link 16 to return to its original position, maintaining the compression on the edge of the PE bag 3.

[0037] In this embodiment, heat-sealing pressure rods 12 are slidably connected to both sides of the pressure sealing bracket 5, and spring 2 15 is fixedly connected to the top of the heat-sealing pressure rods 12 and the top of the pressure sealing bracket 5;

[0038] A heat sealing host 7 is fixedly connected above the pressure sealing bracket 5, and a heat sealing plate 13 is fixedly connected below the heat sealing pressure rod 12. One end of multiple heat sealing plates 13 is electrically connected to the heat sealing host 7 through a power supply line 8.

[0039] As the sealing bracket 5 moves downward, the edge compression bracket 20 first contacts the edge of the PE bag 3, and then unfolds. The continuing to move sealing bracket 5 can squeeze the two heat sealing plates 13 to press the edge of the PE bag 3 from the top and bottom. Then the heat sealing host 7 heats the heat sealing plates 13 through the power supply line 8, thereby heating and sealing the edge of the PE bag 3 from both sides.

[0040] In this embodiment, a clamping rod 6 is slidably connected to the middle of the sealing bracket 5, and a spring 11 is fixedly connected to the top of the clamping rod 6 and the top of the sealing bracket 5.

[0041] The front end of the clamping rod 6 can fix the part of the PE bag 3 that wraps the workpiece from the top and bottom. The front end of the clamping rod 6 contacts the PE bag 3 earlier than the edge extrusion frame 20, which can prevent the PE bag 3 from shifting during the sealing process.

[0042] In this embodiment: When in use, the PE bag 3 containing the workpiece is installed on the support frame 2. The support frame 2 has extended guard plates on both sides to position the workpiece on the PE bag 3. At this time, the two sides of the PE bag 3 can be pressed together. Then the double-headed hydraulic rod 4 can retract inward, which will cause the four edge extrusion frames 20 above and the four edge extrusion frames 20 below to be squeezed by the traction straps 22 installed on the two edge extrusion frames 20 respectively.

[0043] Then the double-headed hydraulic rod 4 continues to move downward, which allows the four edge extrusion frames 20 on the same side to move to both sides in pairs, flattening the compression opening on one side of the PE bag 3. This ensures that the compression interfaces on both sides of the PE bag 3 are completely sealed during subsequent sealing, preventing any air leakage.

[0044] After the edge compression frame 20 is moved into place, the traction motor 19 is started to continue to flatten the PE bag 3 to both sides, which can further make the PE bag 3 more flat at the pressing point; the spring 3 18 can make the outwardly rotating and unfolded parallel connecting rod 16 return to its original position, maintaining the compression on the edge of the PE bag 3.

[0045] The pressure plate 25 can squeeze the pull belt 22 downwards, keeping the area below the pull belt 22 flat and preventing wrinkles from appearing at the edge of the PE bag 3 at the pressing point;

[0046] As the sealing bracket 5 moves downward, the edge extrusion bracket 20 first contacts the edge of the PE bag 3. After unfolding, the sealing bracket 5, which continues to move, can squeeze the two heat sealing plates 13 to press the edge of the PE bag 3 from the top and bottom. Then, the heat sealing host 7 heats the heat sealing plates 13 through the power supply line 8, thereby heating and sealing the edge of the PE bag 3 from both sides. The front end of the clamping rod 6 can fix the part of the PE bag 3 that wraps the workpiece from the top and bottom. The front end of the clamping rod 6 contacts the PE bag 3 earlier than the edge extrusion bracket 20, which can prevent the PE bag 3 from shifting during sealing.

[0047] Example 2:

[0048] A PE sealing machine, this embodiment is based on embodiment 1 with the following improvements, such as... Figure 1-5 As shown,

[0049] In this embodiment, a negative pressure suction cup 9 is fixedly connected inside the clamping rod 6, and a vacuum pump 10 is fixedly connected to one side of the workbench 1. The air inlet of the vacuum pump 10 is fixedly connected to the negative pressure suction cup 9 through a pipe.

[0050] The negative pressure suction cup 9 can hold the PE bag 3 from both sides, and when the clamping rod 6 moves outward with the sealing bracket 5, it pulls the two sides of the PE bag 3. This allows the PE bag 3 to be pulled in the opposite direction after sealing for quality inspection. If it can be easily pulled open, it means that the sealing is unqualified.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A PE sealing machine, comprising a worktable (1) for supporting PE bags (3), characterized in that: A support frame (2) is fixedly connected above the workbench (1). A double-headed hydraulic rod (4) is fixedly connected to one side of the workbench (1). A pressure sealing bracket (5) is fixedly connected to the movable ends on both sides of the double-headed hydraulic rod (4). A T-shaped rod (14) is fixedly connected to the lower side of both ends of the pressure sealing bracket (5). Multiple sets of parallel connecting rods (16) are rotatably connected to both sides of the T-shaped rod (14). An edge extrusion frame (20) is rotatably connected to the other end of the parallel connecting rod (16). Multiple drive wheels (21) are rotatably connected to both sides of the edge extrusion frame (20). A traction belt (22) is connected to the outer side of the drive wheel (21).

2. A PE crimping machine according to claim 1, characterized in that: One end of the parallel connecting rod (16) on one side is rotatably connected to multiple synchronous pulleys (23), which are connected by a synchronous belt (24). One end of the lower synchronous pulley (23) is fixedly connected to a drive wheel (21) on one side. One end of the parallel connecting rod (16) on one side is fixedly connected to a traction motor (19), and one end of the synchronous pulley (23) on the other side is fixedly connected to the power output end of the traction motor (19).

3. A PE crimping machine according to claim 2, characterized in that: A lower pressure plate (25) is fixedly connected below the edge extrusion frame (20), and one end of the lower pressure plate (25) is slidably connected to the inside of the traction belt (22).

4. A PE crimping machine according to claim 1, characterized in that: The T-shaped rod (14) is fixedly connected to a rotating shaft (17) at both ends, and a spring (18) is rotatably connected to one end of the rotating shaft (17) and a parallel connecting rod (16) on one side.

5. A PE sealing machine according to claim 4, characterized in that: The pressure sealing bracket (5) is slidably connected to heat sealing pressure rods (12) on both sides, and springs (15) are fixedly connected to the top of the heat sealing pressure rods (12) and the top of the pressure sealing bracket (5).

6. A PE crimping machine according to claim 5, characterized in that: A heat sealing host (7) is fixedly connected above the pressure sealing bracket (5), and a heat sealing plate (13) is fixedly connected below the heat sealing pressure rod (12). One end of the multiple heat sealing plates (13) is electrically connected to the heat sealing host (7) through a power supply line (8).

7. A PE crimping machine according to claim 6, characterized in that: A clamping rod (6) is slidably connected in the middle of the sealing bracket (5), and a spring (11) is fixedly connected to the top of the clamping rod (6) and the top of the sealing bracket (5).

8. A PE crimping machine according to claim 7, characterized in that: The clamping rod (6) is fixedly connected to a negative pressure suction cup (9), and a vacuum pump (10) is fixedly connected to one side of the workbench (1). The air inlet of the vacuum pump (10) is fixedly connected to the negative pressure suction cup (9) through a pipe.

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