Novel vacuum-pumping heat-sealing mechanism for heavy bag packaging

Abstract

The utility model provides a novel vacuumizing heat-sealing mechanism for heavy bag packaging, and relates to the technical field of vacuum heat-sealing mechanisms, the novel vacuumizing heat-sealing mechanism comprises a lifting cylinder A and a main frame body, the bottom end of the lifting cylinder A is fixedly provided with an air exhaust cylinder, the two sides of the main frame body are symmetrically and rotatably connected with a group of heat-sealing supports A, and the heat-sealing supports A are symmetrically and rotatably connected with the lifting cylinder A; the bottom end of each group of heat sealing supports A is fixedly connected with an insulating block; when the heating wire A and the heating wire B are installed, firstly, the tensioning pressing plate is shifted upwards till the tensioning spring is in the maximum compression state, then one end of the heating wire A and one end of the heating wire B are plugged into the pressing holes of the heat sealing pressing block, the ends of the heating wire A and one end of the heating wire B are tensioned and kept in the tightened state, and then the pressing block A and the pressing block B are pressed by screwing the screws installed on the heat sealing pressing block. And finally, the tensioning pressing plate is pulled back downwards, and the heating wire A and the heating wire B are kept in a tensioning state under the action of the tensioning spring.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum heat sealing mechanisms, in particular to a novel vacuum heat sealing mechanism for heavy bag packaging. Background Art

[0002] Some packaging materials may have strong water absorption or easily deteriorate after contact with air. Therefore, the packaging bags need to be vacuumed after packaging to isolate the air and protect the materials. Some materials may be loose, and when naturally stacked, there is a lot of air between the materials, resulting in a large overall volume. To facilitate packing of the materials, the packaging bags need to be vacuumed to reduce the volume of the materials and facilitate packing.

[0003] Most of the existing vacuum heat sealing mechanisms have complex structures and large volumes. The heat sealing heating wire relaxes after working for a period of time, causing the heat seal to bend. In addition, the heat sealing temperature is unstable after the heating wire works continuously for a period of time, which can easily cause the packaging bag to be burned and the packaging bag to have pulling marks at the heat seal. Therefore, the utility model proposes a new vacuum heat sealing mechanism for heavy bag packaging to solve the above problems. Utility Model Content

[0004] In view of the above problems, the present invention proposes a novel vacuum heat sealing mechanism for heavy bag packaging to solve the problem in the prior art that the heat sealing heating wire has no tensioning structure and the heating wire relaxes after a period of time, affecting the heat sealing effect.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a new type of vacuum heat sealing mechanism for heavy bag packaging, including a lifting cylinder A and a main frame, the bottom end of the lifting cylinder A is fixedly installed with a vacuum cylinder, the outer side of the vacuum cylinder is fixedly connected to the main frame, and the two sides of the main frame are symmetrically rotatably connected with a group of heat sealing supports A, and the bottom end of each group of heat sealing supports A is fixedly connected to an insulating block, and the two insulating blocks are respectively installed with heating wire A and heating wire B. The insulating block is also provided with a tensioning mechanism matching the heating wire A and the heating wire B, and the main frame is also provided with a vacuum mechanism and a driving mechanism.

[0006] Further improvements are: the tensioning mechanism includes a tensioning plate, a heat-sealing pressure block, a tensioning spring, a pressure block A, a pressure block B, an open pin A and an open pin B; the tensioning plate and the heat-sealing pressure block are fixed to the insulating block by open pins B and open pin A respectively; a tensioning spring is provided inside the insulating block; the upper and lower ends of the heat-sealing pressure block are symmetrically connected with pressure block B and pressure block A for rotation.

[0007] Further improvements are: the exhaust mechanism includes an exhaust pipe A and an exhaust pipe B, and the left and right output ends of the exhaust cylinder are respectively provided with an exhaust pipe A and an exhaust pipe B, and the exhaust pipe A and the exhaust pipe B include a sealing tube and a piston rod, and the piston rod is slidably installed inside the sealing tube, and the top of the piston rod is fixedly connected to the output end of the exhaust cylinder.

[0008] A further improvement is that a group of guide rollers are symmetrically rotatably connected to one side of the main frame, a guide shaft is slidably connected between the two groups of guide rollers, and the top end of the guide shaft is fixedly connected to the wall through a fixing seat.

[0009] Further improvements are: the driving mechanism includes a bag opening cylinder, a positioning gear A and a positioning gear B, the top ends of adjacent heat sealing supports A are fixedly connected with positioning gears A and positioning gears B respectively, the outer walls of the positioning gears A and positioning gears B are engaged with each other, a group of the bottom ends of the heat sealing supports A are fixedly connected with heat sealing pads, and the bag opening cylinders are symmetrically provided on both sides of the main frame, and the two output ends of the bag opening cylinders are hinged to the adjacent heat sealing supports A respectively.

[0010] Further improvements are: cooling air knives are symmetrically provided on both sides of the main frame, and the cooling air knives include an assembly rod, a fixing ring and six groups of duckbill air knives. An assembly rod is fixedly connected between the two parallel heat-sealed supports A in the front and rear, and duckbill air knives A, duckbill air knife B, duckbill air knife C, duckbill air knife D, duckbill air knife E and duckbill air knife F are respectively installed on the outer side of the assembly rod through multiple fixing rings.

[0011] A further improvement is that a reinforcing plate is provided between the air pumping cylinder and the main frame, the top and bottom ends of the reinforcing plate are detachably connected to the air pumping cylinder and the main frame respectively by bolts, and triangular plates are symmetrically provided on both sides of the reinforcing plate.

[0012] The beneficial effect of the present invention is that when installing the heating wire A and the heating wire B, first push the tensioning plate upward to the maximum compression state of the tensioning spring, then insert one end of the heating wire A and the heating wire B into the tightening hole of the heat-sealing pressure block and tighten them at the end to keep them in a taut state, then tighten the screws installed on the heat-sealing pressure block to tighten the pressure block A and the pressure block B, so that the heating wire A and the heating wire B are pressed tightly and not loose, and finally push the tensioning plate back downward, and the heating wire A and the heating wire B are kept in a tensioned state under the action of the tensioning spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the utility model;

[0014] Figure 2 This is a schematic diagram of the heating wire tensioning structure of the utility model;

[0015] Figure 3This is a schematic diagram of the heat sealing cooling structure of the utility model.

[0016] In the figure: 1. Lifting cylinder A; 2. Vacuum cylinder; 3. Vacuum pipe A; 4. Bag opening cylinder; 5. Vacuum pipe B; 6. Bag opening suction cup A; 7. Lifting cylinder B; 8. Guide roller; 9. Guide shaft; 10. Positioning gear A; 11. Positioning gear B; 12. Heat sealing cylinder; 13. Heat sealing support A; 14. Heat sealing cushion; 15. Insulation block; 16. Tensioning plate; 17. Heat sealing pressure block; 18. Heating wire A; 19. Sealing strip; 20. Heating wire B; 21. Heat sealing support B; 22. Bag opening suction cup B; 23. Cooling air knife; 24. Tensioning spring; 25. Pressing block A; 26. Pressing block B; 27. Cotter pin A; 28. Cotter pin B; 29. ​​Duckbill air knife A; 30. Duckbill air knife B; 31. Duckbill air knife C; 32. Duckbill air knife D; 33. Duckbill air knife E; 34. Duckbill air knife F. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] according to Figure 1 、 2 As shown in Figure 3, this embodiment proposes a new type of vacuum heat sealing mechanism for heavy bag packaging, including a lifting cylinder A1 and a main frame. The bottom end of the lifting cylinder A1 is fixedly installed with a vacuum cylinder 2, and the outer side of the vacuum cylinder 2 is fixedly connected to the main frame. The two sides of the main frame are symmetrically rotatably connected with a group of heat sealing supports A13, and the bottom end of each group of heat sealing supports A13 is fixedly connected with an insulating block 15. The two insulating blocks 15 are respectively installed with a heating wire A18 and a heating wire B20. The insulating block 15 is also provided with a tensioning mechanism that matches the heating wire A18 and the heating wire B20. The main frame is also provided with a vacuum mechanism And the driving mechanism, the output end of the lifting cylinder A1 is fixed on the wall. When the output end of the lifting cylinder A1 is extended, it can drive the vacuum cylinder 2 and the main frame to move downward, wrap the opening of the packaging bag below, and first use the vacuum mechanism to empty the air in the packaging bag. The driving mechanism drives the heating wire A18 and the heating wire B20 to close each other through two sets of heat-sealing supports A13 and insulating blocks 15 to perform hot pressing on the opening of the packaging bag to automatically seal the opening of the packaging bag, and then the driving mechanism drives the heating wire A18 and the heating wire B20 to separate from each other, and the output end of the lifting cylinder A1 is shortened to drive the vacuum cylinder 2 and the main frame to move upward and reset.

[0019] A group of guide rollers 8 are symmetrically connected to one side of the main frame for rotation, and a guide shaft 9 is slidably connected between the two groups of guide rollers 8. The top of the guide shaft 9 is fixedly connected to the wall through a fixed seat. When the lifting cylinder A1 drives the vacuum cylinder 2 and the main frame to move up and down, the guide rollers 8 on one side fit together with the guide shaft 9, so that the vacuum cylinder 2 and the main frame move back and forth up and down along the outer wall of the guide shaft 9, limiting the movement trajectory of the main frame and avoiding deviation during its movement. The guide rollers 8 can reduce the friction between the guide shafts 9, so that the vacuum cylinder 2 and the main frame move more smoothly.

[0020] The driving mechanism includes a bag opening cylinder 4, a positioning gear A10 and a positioning gear B11. The tops of adjacent heat-sealing supports A13 are fixedly connected with positioning gears A10 and B11 respectively. The positioning gears A10 and the outer walls of the positioning gears B11 are meshed with each other. The bottom ends of a group of heat-sealing supports A13 are fixedly connected with heat-sealing cushions 14. The bag opening cylinders 4 are symmetrically arranged on both sides of the main frame. The two output ends of the bag opening cylinders 4 are respectively hinged with the adjacent heat-sealing supports A13. The lifting cylinder A1 drives the air pump. The cylinder 2 and the main frame move downward, so that the heating wire A18 and the heating wire B20 are wrapped around the opening at the top of the packaging bag. The two output ends of the bag opening cylinder 4 drive the two sets of heat sealing supports A13 to rotate inward at the same time. The two sets of heat sealing supports A13 respectively drive the heating wire A18 and the heating wire B20 to fit together to clamp the top of the packaging bag. After the air in the packaging bag is evacuated, the heating wire A18 and the heating wire B20 can convert electrical energy into thermal energy to heat-seal the opening of the packaging bag to automatically vacuum-package the product.

[0021] The exhaust mechanism includes an exhaust pipe A3 and an exhaust pipe B5. The left and right output ends of the exhaust cylinder 2 are respectively provided with an exhaust pipe A3 and an exhaust pipe B5. The exhaust pipe A3 and the exhaust pipe B5 include a sealing tube and a piston rod. The piston rod is slidably installed inside the sealing tube. The top of the piston rod is fixedly connected to the output end of the exhaust cylinder 2. After the heating wire A18 and the heating wire B20 are close to each other to close the opening of the packaging bag, the bottom end of the sealing tube is inserted into the top of the packaging bag, and the output end of the exhaust cylinder 2 drives the piston rod to move upward to empty the air in the packaging bag. The sealing tube is located above the closed position and will not affect the hot pressing of the heating wire A18 and the heating wire B20.

[0022] The tensioning mechanism includes a tensioning plate 16, a heat-sealing pressure block 17, a tensioning spring 24, a pressure block A25, a pressure block B26, an open pin A27 and an open pin B28. The tensioning plate 16 and the heat-sealing pressure block 17 are fixed to the insulating block 15 by open pins B28 and open pin A27 respectively. The interior of the insulating block 15 is provided with a tensioning spring 24. The upper and lower ends of the heat-sealing pressure block 17 are symmetrically connected with pressure blocks B26 and A25. When installing the heating wire A18 and the heating wire B20, first move the tensioning plate 16 upward to The tensioning spring 24 is in the maximum compression state, and then one end of the heating wire A18 and the heating wire B20 is inserted into the tightening hole of the heat-sealing pressure block 17 and tightened at the end to keep it in a taut state. Then, the pressure block A25 and the pressure block B26 are tightened by tightening the screws installed on the heat-sealing pressure block 17, so that the heating wire A18 and the heating wire B20 are pressed tightly and not loose. Finally, the tensioning plate 16 is pushed back downward. The heating wire A18 and the heating wire B20 are kept in a tensioned state under the action of the tensioning spring 24. The installation method of the other end of the heating wire A18 and the heating wire B20 is the same.

[0023] Cooling air knives 23 are symmetrically provided on both sides of the main frame, and the cooling air knife 23 includes an assembly rod, a fixing ring and six groups of duckbill air knives. The two parallel heat sealing supports A13 are fixedly connected with an assembly rod, and the outer side of the assembly rod is respectively installed with duckbill air knife A29, duckbill air knife B30, duckbill air knife C31, duckbill air knife D32, duckbill air knife E33 and duckbill air knife F34 through multiple fixing rings. The six groups of duckbill air knives and their mounting fixing rings are staggered with each other to avoid compressed air from forming convection and affecting the cold zone effect. During the entire vacuum heat sealing process, the compressed air of the six groups of duckbill air knives blows toward the heating wire A18 and the heating wire B20 to achieve the effect of reducing the temperature of the heating wire A18 and the heating wire B20, thereby ensuring the stability of continuous vacuum heat sealing.

[0024] A reinforcing plate is provided between the suction cylinder 2 and the main frame. The top and bottom ends of the reinforcing plate are detachably connected to the suction cylinder 2 and the main frame respectively by bolts. Triangular plates are symmetrically provided on both sides of the reinforcing plate. The triangle is stable and can increase the connection between the suction cylinder 2 and the main frame, making the connection between the lifting cylinder A1 and the main frame more stable.

[0025] When installing the heating wire A18 and the heating wire B20 in the vacuum heat sealing mechanism, first push the tensioning plate 16 upward to the maximum compression state of the tensioning spring 24, then insert one end of the heating wire A18 and the heating wire B20 into the compression hole of the heat sealing pressure block 17 and tighten them at the end to keep them in a taut state, then tighten the screws installed on the heat sealing pressure block 17 to compress the pressure block A25 and the pressure block B26, so that the heating wire A18 and the heating wire B20 are pressed tightly and not loose, finally push the tensioning plate 16 back downward, and the heating wire A18 and the heating wire B20 are kept in a tensioned state under the action of the tensioning spring 24. The installation method of the other end of the heating wire A18 and the heating wire B20 is the same.

[0026] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A novel vacuum heat sealing mechanism for heavy bag packaging, comprising a lifting cylinder A (1) and a main frame, characterized in that: The bottom end of the lifting cylinder A (1) is fixedly mounted with a vacuum cylinder (2), the outer side of the vacuum cylinder (2) is fixedly connected to a main frame, and a group of heat-sealing supports A (13) are symmetrically rotatably connected on both sides of the main frame, and the bottom end of each group of heat-sealing supports A (13) is fixedly connected to an insulating block (15), and the two insulating blocks (15) are respectively mounted with a heating wire A (18) and a heating wire B (20), and a tensioning mechanism matching the heating wire A (18) and the heating wire B (20) is also provided on the insulating block (15), and a vacuum mechanism and a driving mechanism are also provided on the main frame; The tensioning mechanism comprises a tensioning plate (16), a heat-sealing pressure block (17), a tensioning spring (24), a pressure block A (25), a pressure block B (26), a cotter pin A (27) and a cotter pin B (28); the tensioning plate (16) and the heat-sealing pressure block (17) are fixed to the insulating block (15) via the cotter pin B (28) and the cotter pin A (27), respectively; a tensioning spring (24) is provided inside the insulating block (15); and the upper and lower ends inside the heat-sealing pressure block (17) are symmetrically connected to the pressure block B (26) and the pressure block A (25) for rotation.

2. A novel vacuum heat sealing mechanism for heavy bag packaging according to claim 1, characterized in that: The exhaust mechanism comprises an exhaust pipe A (3) and an exhaust pipe B (5), wherein the left and right output ends of the exhaust cylinder (2) are provided with an exhaust pipe A (3) and an exhaust pipe B (5), respectively, and the exhaust pipe A (3) and the exhaust pipe B (5) comprise a sealing tube and a piston rod, wherein the piston rod is slidably mounted inside the sealing tube, and the top end of the piston rod is fixedly connected to the output end of the exhaust cylinder (2).

3. The novel vacuum heat sealing mechanism for heavy bag packaging according to claim 1 is characterized in that: One side of the main frame is symmetrically connected to a group of guide rollers (8), and a guide shaft (9) is slidably connected between the two groups of guide rollers (8). The top end of the guide shaft (9) is fixedly connected to the wall through a fixing seat.

4. The novel vacuum heat sealing mechanism for heavy bag packaging according to claim 1 is characterized in that: The driving mechanism includes a bag opening cylinder (4), a positioning gear A (10) and a positioning gear B (11); the top ends of adjacent heat-sealing supports A (13) are fixedly connected to the positioning gear A (10) and the positioning gear B (11), respectively; the outer walls of the positioning gear A (10) and the positioning gear B (11) are meshed with each other; the bottom ends of a group of the heat-sealing supports A (13) are fixedly connected to a heat-sealing cushion (14); the bag opening cylinders (4) are symmetrically provided on both sides of the main frame; the two output ends of the bag opening cylinders (4) are hinged to the adjacent heat-sealing supports A (13) respectively.

5. The novel vacuum heat sealing mechanism for heavy bag packaging according to claim 4 is characterized in that: Cooling air knives (23) are symmetrically provided on both sides of the main frame, and the cooling air knives (23) include an assembly rod, a fixing ring and six groups of duckbill air knives. An assembly rod is fixedly connected between the two parallel heat-sealing supports A (13) in front and back, and duckbill air knives A (29), duckbill air knife B (30), duckbill air knife C (31), duckbill air knife D (32), duckbill air knife E (33) and duckbill air knife F (34) are respectively installed on the outer side of the assembly rod through multiple fixing rings.

6. The novel vacuum heat sealing mechanism for heavy bag packaging according to claim 1 is characterized in that: A reinforcing plate is provided between the air extraction cylinder (2) and the main frame, the top and bottom ends of the reinforcing plate are detachably connected to the air extraction cylinder (2) and the main frame respectively via bolts, and triangular plates are symmetrically provided on both sides of the reinforcing plate.

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