Double-helix open bag packaging machine

Abstract

The utility model provides a double-helix open bag packaging machine which solves the technical problems that when an existing open bag packaging machine carries out quantitative charging, manual adjustment is mostly carried out manually, and precision is poor, and can be widely applied to the field of packaging machines. The device specifically comprises a box body, a feeding pipe is arranged on the top wall of the box body, the bottom of the feeding pipe is communicated with a large-diameter auger pipeline, two side-by-side medium-diameter auger pipelines are arranged below the large-diameter auger pipeline, a small-diameter auger pipeline is arranged below the medium-diameter auger pipelines, and all the auger pipelines are jointly communicated through a conveying hopper; spiral blades are arranged in all the auger pipelines and are driven by a motor; the end of the medium-diameter auger pipeline and the end of the small-diameter auger pipeline extend out of the box body and communicate with the discharging head. The auger pipeline is further communicated with a first air suction pipeline, and the first air suction pipeline is connected with a vacuum pump and used for primarily sucking air in the auger pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging machines, in particular to a double-spiral open-mouth bag packaging machine. Background Art

[0002] At present, open-top packaging machines are mainly used for quantitative packaging in the pharmaceutical, chemical, pesticide, non-metal, coating, ceramic and other industries, such as ceramic powder, calcium carbonate, wettable powder, carbon black, rubber powder, food additives, pigments, dyes, zinc oxide, pharmaceutical powder, etc. When the existing open-top packaging machines are quantitatively loaded, they are mostly adjusted manually, and the accuracy is poor. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and provide a double-spiral open-mouth bag packaging machine.

[0004] To this end, the utility model provides a double-spiral open-mouth bag packaging machine, including a box body, a top wall of the box body is provided with a feed pipe, the bottom of the feed pipe is connected with a thick-diameter auger pipe, two side-by-side medium-diameter auger pipes are provided below the thick-diameter auger pipe, a thin-diameter auger pipe is provided below the medium-diameter auger pipe, all the auger pipes are connected together through a transfer hopper; spiral blades are provided inside all the auger pipes, and the spiral blades are driven by a motor; the ends of the medium-diameter auger pipe and the thin-diameter auger pipe extend to the outside of the box body and are connected to a discharge head.

[0005] Furthermore, the auger pipeline is also connected to a first air extraction pipeline, which is connected to a vacuum pump and is used to preliminarily extract the air in the auger pipeline.

[0006] Furthermore, a buffer hopper larger than the diameter of the feed pipe is fixedly provided at the connection portion between the feed pipe and the large-diameter auger pipe, which can partially pre-store the material flowing out of the feed pipe.

[0007] Furthermore, a packing clamp is provided on the discharge head, and the packing clamp includes two sets of rotating arms arranged in a mirror-like manner, and a cylinder is hinged between the two sets of rotating arms; a bag opening clamping ring is provided between each set of rotating arms, and a bag opening clamping plate is provided at the end of each rotating arm.

[0008] Furthermore, a protrusion is provided on the surface of the bag opening clamping plate, which can make the bag opening clamping plate fit more closely on the bag opening.

[0009] Furthermore, a circular discharge port is provided at the bottom of the discharge head, and multiple filter rods are arranged inside, which are fixedly connected to the telescopic rod; an air collecting box is provided on the top of the telescopic rod, and the air collecting box is connected to the filter rods; the air collecting box is also connected to a second air extraction pipeline, and the second air extraction pipeline is also connected to the vacuum pump for secondary extraction of air from the packaging bag.

[0010] Furthermore, a weighing platform is provided below the discharge port for weighing the weight of the packaging bag.

[0011] Furthermore, the inner walls of all the auger pipes are also provided with sintered filters to prevent materials from entering the first exhaust pipeline during exhaust.

[0012] Furthermore, a protective box is provided outside the telescopic rod to prevent dust.

[0013] Furthermore, the outer edge of the spiral blade is serrated.

[0014] The utility model provides a double-spiral open-mouth bag packaging machine, which has the following beneficial effects:

[0015] The spiral feeding is divided into 3 layers. The first layer has the largest diameter and feeds quickly to the 2nd stage double augers. The 3rd stage has the smallest feeding diameter. When the material is close to the set weight, the 1st and 2nd stages stop feeding and the 3rd stage feeds slowly, which not only improves the packaging speed but also ensures the weighing accuracy.

[0016] When filling powder materials, the vacuum system works first, and then the powder conveying device accurately fills the materials into the packaging bag. Due to the vacuum environment, the materials are filled evenly and without dust. When filling some easily oxidizable powders, vacuuming can better protect the properties of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the external structure diagram of the utility model;

[0018] Figure 2 It is a structural diagram of the interior of the box of the utility model;

[0019] Figure 3 It is a structural diagram of the utility model packaging clamp;

[0020] Figure 4 It is a structural diagram of the interior of the protective box of the utility model;

[0021] Figure 5 This is a structural diagram of the interior of the auger pipeline of the utility model;

[0022] Markings in the figure: 1. Box body; 2. Feed pipe; 3. Buffer hopper; 4. Coarse-diameter auger pipe; 5. Medium-diameter auger pipe; 6. Fine-diameter auger pipe; 7. Transfer hopper; 8. Mounting beam; 9. Mounting plate; 10. Discharge head; 11. Feeding port; 12. Packing fixture; 13. Rotating arm; 14. Bag opening clamping plate; 15. Bag opening clamping ring; 16. Cylinder; 17. Weighing platform; 18. Filter rod; 19. Telescopic rod; 20. Gas collecting box; 21. First exhaust pipeline; 22. Second exhaust pipeline; 23. Spiral blade; 24. Sintered filter; 25. Protective box. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0024] like Figure 1 As shown in Figures 2 and 5, the utility model provides a double-spiral open-mouth bag packaging machine, including a box body 1, a feed pipe 2 is provided on the top wall of the box body 1, and a thick-diameter auger pipe 4 is connected to the bottom of the feed pipe 2. A buffer hopper 3 larger than the diameter of the feed pipe 2 is fixedly provided at the connection part between the feed pipe 2 and the thick-diameter auger pipe 4, which can partially pre-store the material flowing out of the feed pipe 2 to prevent the material from accumulating in the feed pipe 2 when the flow is slow, causing blockage. Two parallel medium-diameter auger pipes 5 are provided below the thick-diameter auger pipe 4, and a thin-diameter auger pipe 6 is provided below the medium-diameter auger pipe 5, and the four auger pipes are connected together through a transfer hopper 7. Spiral blades 23 are provided inside the four auger pipes, and the spiral blades 23 are driven by the motor at the end. The other ends of the medium-diameter auger pipe 5 and the thin-diameter auger pipe 6 extend to the outside of the box body 1 and are connected to the discharge head 10.

[0025] The auger pipeline is also connected to a first air extraction pipeline 21, which is connected to a vacuum pump and is used to initially extract the air in the auger pipeline. Figure 3 As shown, a circular discharge port 11 is provided at the bottom of the discharge head 10, and a plurality of filter rods 18 are provided inside. Figure 4 As shown, the filter rod 18 is fixedly connected to the telescopic rod 19, and a gas collecting box 20 is arranged on the top of the telescopic rod 19, and the gas collecting box 20 is connected to the filter rod 18. The gas collecting box 20 is also connected to a second air extraction pipeline 22, which is also connected to a vacuum pump for secondary extraction of air from the packaging bag. A weighing platform 17 is also arranged below the discharge port 11 for weighing the weight of the packaging bag.

[0026] When filling the material, place the packaging bag below the discharge port 11, and the material enters the coarse-diameter auger pipe 4 through the feed pipe 2. The spiral blades 23 in the coarse-diameter auger pipe 4 push the material to the transfer hopper 7. The two medium-diameter auger pipes 5 first push the material to the discharge head 10 for coarse filling, and at the same time, the first exhaust pipe 21 extracts the air in the medium-diameter auger pipe 5; when the weighing platform 17 measures that the weight of the packaging bag is close to the target weight, the medium-diameter auger pipe 5 stops running, and the fine-diameter auger pipe 6 continues to push the material for fine filling until the weight of the packaging bag reaches the target weight. After that, the telescopic rod 19 pushes the filter rod 18 into the packaging bag, and the packaging bag is secondary evacuated through the second exhaust pipe 22. After the exhaust is completed, the filter rod 18 withdraws from the packaging bag, and finally the packaging bag is sealed.

[0027] A plurality of mounting plates 9 are provided on the transfer hopper 7, which are installed in coordination with the mounting crossbeam 8 inside the box body 1 to provide fixed support for the four auger pipes. Figure 5 As shown, the inner walls of the four auger pipes are also provided with sintered filters 24 to prevent the material from entering the first exhaust pipe 21 during exhaust. The outer edge of the spiral blade 23 is serrated to prevent the material in the auger pipe from being unable to continue to be pushed due to atmospheric pressure after exhaust.

[0028] like Figure 2 As shown, the discharging head 10 is also provided with a packing clamp 12, which includes two sets of rotating arms 13 arranged in a mirror image, and a cylinder 16 is hinged between the two sets of rotating arms 13. A bag opening clamping ring 15 is arranged between each set of rotating arms 13, and a bag opening clamping plate 14 is arranged at the end of each rotating arm 13. The surface of the bag opening clamping plate 14 is provided with a protrusion, which can make the bag opening clamping plate 14 fit more tightly on the bag opening. When in use, the bag opening of the packaging bag is put on the discharge port 11, and the cylinder 16 drives the rotating arm 13 to shrink inward, and the two bag opening clamping rings 15 fit the bag opening on the outer wall of the discharge port 11, and the four bag opening clamping plates 14 clamp the excess parts on both sides of the bag opening, so as to complete the fixing of the bag opening of the packaging bag on the discharge port 11.

[0029] A protective box 25 is also provided outside the telescopic rod 19 for dust prevention.

[0030] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A double-screw open-mouth bag packaging machine, comprising a box body, the top wall of which is provided with a feed pipe, characterized in that: A thick-diameter auger pipe is connected to the bottom of the feed pipe, two parallel medium-diameter auger pipes are arranged below the thick-diameter auger pipe, a thin-diameter auger pipe is arranged below the medium-diameter auger pipe, and all the auger pipes are connected together through a transfer hopper; spiral blades are arranged inside all the auger pipes, and the spiral blades are driven by a motor; the ends of the medium-diameter auger pipe and the thin-diameter auger pipe extend to the outside of the box and are connected to the discharge head.

2. A double-spiral open-mouth bag packaging machine according to claim 1, characterized in that: The auger pipeline is also connected to a first air extraction pipeline, which is connected to a vacuum pump and is used for preliminarily extracting air from the auger pipeline.

3. A double-spiral open-mouth bag packaging machine according to claim 1, characterized in that: A buffer hopper larger than the diameter of the feed pipe is fixedly provided at the connection portion between the feed pipe and the large-diameter auger pipe, which can partially pre-store the material flowing out of the feed pipe.

4. A double-spiral open-mouth bag packaging machine according to any one of claims 1 to 3, characterized in that: A packing clamp is arranged on the discharge head, and the packing clamp comprises two sets of rotating arms arranged in a mirror image, and a cylinder is hinged between the two sets of rotating arms; a bag opening clamping ring is arranged between each set of rotating arms, and a bag opening clamping plate is arranged at the end of each rotating arm.

5. A double-spiral open-mouth bag packaging machine according to claim 4, characterized in that: The surface of the bag opening clamping plate is provided with a convex block, which can make the bag opening clamping plate fit more closely on the bag opening.

6. A double-spiral open-mouth bag packaging machine according to claim 2, characterized in that: A circular discharge port is provided at the bottom of the discharge head, and multiple filter rods are arranged inside, which are fixedly connected to the telescopic rod; an air collecting box is provided on the top of the telescopic rod, and the air collecting box is connected to the filter rods; the air collecting box is also connected to a second air extraction pipeline, and the second air extraction pipeline is also connected to the vacuum pump for secondary extraction of air from the packaging bag.

7. A double-spiral open-mouth bag packaging machine according to claim 6, characterized in that: A weighing platform is also provided below the discharge port for weighing the weight of the packaging bag.

8. The double-spiral open-mouth bag packaging machine according to claim 1, characterized in that: The inner walls of all the auger pipes are also provided with sintered filters to prevent materials from entering the first exhaust pipeline during exhaust.

9. The double-spiral open-mouth bag packaging machine according to claim 6, characterized in that: A protective box is also provided outside the telescopic rod to prevent dust.

10. The double-spiral open-mouth bag packaging machine according to claim 1, characterized in that: The outer edge of the spiral blade is serrated.

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