Packaging systems for filling dry nylon chips

Abstract

This utility model provides a packaging system for filling nylon dry chips, including a filling machine, a packaging bag, and a pre-inflation device. The filling machine includes a filling outlet, the packaging bag includes an outer bag and an inner bag, and the pre-inflation device includes a hose configured to extend into the inner bag before filling and inject gas into it, causing the inner bag to inflate and adhere to the inner wall of the outer bag. The filling outlet of the filling machine is configured to fill the inflated inner bag with nylon dry chips after pre-inflation. This core innovation of pre-inflating the inner bag of nylon dry chips effectively solves the problems of folding, breakage, and subsequent packaging misalignment caused by particle impact during high-speed filling. The filling system proposed in this solution significantly improves packaging integrity and transportation stability, reduces raw material waste, and provides additional moisture protection for the chips, ensuring the quality of the tire cord fabric raw material.

Description

Technical Field

[0001] This utility model relates to the field of tire cord fabric production technology, and more specifically to a packaging system for filling nylon dry chips. Background Technology

[0002] Nylon chips are sheet-like granules produced during the nylon production process using underwater hot cutting or air-cooled pelletizing technology. They undergo thorough drying during chip production, resulting in low moisture content, facilitating storage and subsequent processing. Nylon chips (such as nylon 6 or nylon 66) are melt-spun into high-strength, high-modulus nylon cord. The cord serves as the warp yarn, and medium-fine count single yarns as the weft yarn, weaving them into cord fabric on heavy-duty looms. The woven cord fabric is then impregnated with adhesive (usually a rubber binder) to enhance adhesion to rubber and prevent separation of the cord fabric from the rubber during high-speed operation.

[0003] In nylon production, dry chips need to be filled. Because dry chips have very high waterproof requirements, each package of filled chips needs to be protected by an intact inner bag (plastic film bag) and an outer bag (woven bag). The bottom of the outer bag is sealed, and the top is the filling port. The inner bag is placed inside the outer packaging bag. However, when the chips are placed down, the inner bag is easily folded by the impact. A folded inner bag can cause the entire package to tilt and become unsuitable for transportation. Sometimes, it can even damage the inner bag. Utility Model Content

[0004] This utility model proposes a packaging system for filling dry nylon chips, comprising:

[0005] The filling machine includes a switch-controlled filling outlet;

[0006] Packaging bag, including outer bag body and inner bag body;

[0007] A pre-inflation device, including a hose and an air valve for controlling the opening and closing of the hose;

[0008] The hose is configured to extend into the inner bag body before the filling operation and inject gas into it, causing the inner bag body to inflate and adhere to the inner wall of the outer bag body;

[0009] The filling outlet of the filling machine is configured to fill the inflated inner bag with nylon dry chips after the inner bag has been pre-inflated.

[0010] Preferably, the inner bag body has two positions within the outer bag body. In the first position, there is a gap cavity between the inner bag body and the outer bag body, and in the second position, the inner bag body is tightly attached to the inner wall of the outer bag body. Before filling, gas is injected into the inner bag body through the hose, causing the inner bag body to move from the first position to the second position.

[0011] Preferably, the outer bag body comprises a woven bag, and the inner bag body comprises a plastic film bag.

[0012] Preferably, the first end of the outer bag is closed and the second end is open, the first end of the inner bag is closed and the second end is open, the open end of the inner bag is located inside the open end of the outer bag, and both open ends face upward toward the filling outlet.

[0013] Preferably, the opening end of the inner bag is fixed to the inside of the opening end of the outer bag.

[0014] Preferably, the first end of the hose is provided with an inflation port, the second end of the hose is connected to a compressed air source, and an air valve is provided between the hose and the compressed air source. When gas is injected into the inner bag, the inflation port extends into the lower end of the inner bag.

[0015] Preferably, the gas injected into the inner bag via the hose is a dry gas.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This solution, through its core innovation of pre-inflating the inner bag of nylon dry chips, effectively solves the problems of folding, breakage, and subsequent packaging misalignment caused by particle impact during high-speed filling. The filling system proposed in this solution significantly improves packaging integrity and transportation stability, reduces raw material waste, and simultaneously provides additional moisture protection for the chips, ensuring the quality of the tire cord fabric raw material. Attached Figure Description

[0018] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the packaging system for filling dry nylon chips, as shown in an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the pre-inflated state of the packaging system for filling dry nylon chips, as shown in an embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the filling state of the packaging system for filling dry nylon chips, as shown in an embodiment of this utility model.

[0022] 10. Filling machine; 11. Filling outlet; 20. Packaging bag; 200. Filling cavity; 201. Gap cavity; 21. Outer bag body; 22. Inner bag body; 30. Pre-inflation device; 31. Hose; 310. Inflation port; 32. Air valve; 33. Compressed air source. Detailed Implementation

[0023] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0024] like Figure 1 and Figure 3 As shown, due to the current problem that the inner bag 22 of the packaging bag 20 is folded and damaged inside the outer bag 21 during the filling process of nylon dry chips, this utility model provides a packaging system for filling nylon dry chips, which aims to solve the problem of filling the inner and outer bags separately. It mainly includes a filling machine 10, a packaging bag 20 and a pre-filling device 30.

[0025] The filling machine 10 includes a switchable filling outlet 11. The filling machine 10 contains nylon dry chip granules, and the nylon dry chip granules can be quantitatively discharged from the outlet 11 through the internal feeding mechanism for quantitative filling.

[0026] Furthermore, the packaging bag 20 includes an outer bag body 21 and an inner bag body 22. Since the nylon dry chips have high requirements for water resistance, an inner bag body 22 with a layer of plastic film is also provided inside the woven outer bag body 21.

[0027] Generally, the first end of the outer bag 21 is closed and the second end is open. That is, the bottom of the outer bag 21 is pre-sealed, with an opening on the top for sealing after filling. The first end of the inner bag 22 is closed and the second end is open. That is, the bottom of the inner bag 22 is also pre-heat-sealed, with an opening on the top for filling. Before filling, the opening end of the inner bag 22 is set inside the opening end of the outer bag 21. That is, the inner bag 22 is placed inside the outer bag 21, and the opening ends are all facing upward toward the filling outlet 11, waiting for filling.

[0028] In some embodiments, the opening end of the inner bag 22 can be pre-fixed to the inside of the opening end of the outer bag 21, and the fixing method can be plastic sealing or sewing.

[0029] like Figure 1 As shown, before the nylon dry chip granules are bagged, because the inner bag body 22 is relatively thin, after the inner bag body 22 is inserted into the outer bag body 21, there is still a gap cavity 201 between the inner bag body 22 and the outer bag body 21. When the nylon dry chip granules directly rush into the inner bag body 22, the inner bag body 22 is easily folded or damaged.

[0030] Therefore, the packaging system also includes a pre-inflation device 30, which includes a hose 31 and an air valve 32 for controlling the opening and closing of the hose 31.

[0031] The hose 31 is configured to extend into the inner bag 22 before filling and inject gas into it, causing the inner bag 22 to inflate and adhere to the inner wall of the outer bag 21. The filling outlet 11 of the filling machine 10 is configured to fill the inflated inner bag 22 with nylon dry chips after the inner bag 22 has been pre-inflated. In this way, the inner bag 22 can always adhere to the inner wall of the outer bag 21 when the nylon dry chip granules are filled, avoiding the situation where the inner bag 22 is folded or damaged due to the gap cavity 201 between the inner bag 22 and the outer bag 21.

[0032] In a specific embodiment, the inner bag 22 has two positions within the outer bag 21. In the first position, there is a gap cavity 201 between the inner bag 22 and the outer bag 21. At this time, no gas is injected into the inner bag 22, and the inner bag 22 is in a pleated state. In the second position, the inner bag 22 is tightly attached to the inner wall of the outer bag 21. Before filling, gas is injected into the inner bag 22 through the hose 31, so that the inner bag 22 moves from the first position to the second position, so that the inner bag 22 will not be folded or damaged during subsequent filling.

[0033] Furthermore, the first end of the hose 31 is provided with an inflation port 310, the second end of the hose 31 is connected to a compressed air source 33, and an air valve 32 is provided between the hose 31 and the compressed air source 33. When gas is injected into the inner bag 22, the inflation port 310 extends into the lower end of the inner bag 22. As the gas is injected, the hose 31 can be gradually pulled outward, so that each part of the inner bag 22 is attached to the inner wall of the outer bag 21.

[0034] In a preferred embodiment, the gas injected into the inner bag 22 by the hose 31 is a dry gas, which can avoid the performance of the nylon dry chips being affected by the gas or the moisture originally present in the inner bag 22.

[0035] Based on the above embodiments, this solution, through its core innovation of pre-inflating the inner bag 22 of the nylon dry chips, effectively solves the problems of folding, damage, and subsequent packaging misalignment caused by particle impact during high-speed filling. The filling system proposed in this solution significantly improves packaging integrity and transportation stability, reduces raw material waste, and at the same time, the injected dry gas provides additional moisture protection for the chips, ensuring the quality of the tire cord fabric raw material.

[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A packaging system for nylon dry chip filling, characterized by, include: The filling machine (10) includes a switch-controllable filling outlet (11); The packaging bag (20) includes an outer bag body (21) and an inner bag body (22); The pre-inflation device (30) includes a hose (31) and an air valve (32) for controlling the opening and closing of the hose (31); The hose (31) is configured to extend into the inner bag (22) before filling and inject gas into it, causing the inner bag (22) to inflate and adhere to the inner wall of the outer bag (21); The filling outlet (11) of the filling machine (10) is configured to fill the bulging inner bag body (22) with nylon dry chips after the inner bag body (22) has been pre-inflated.

2. The packaging system for nylon dry chip filling according to claim 1, characterized in that, The inner bag (22) has two positions inside the outer bag (21). In the first position, there is a gap cavity (201) between the inner bag (22) and the outer bag (21). In the second position, the inner bag (22) is tightly attached to the inner wall of the outer bag (21). Before filling, gas is injected into the inner bag (22) through the hose (31) so that the inner bag (22) moves from the first position to the second position.

3. The packaging system for nylon dry chip filling according to claim 1, characterized in that, The outer bag (21) includes a woven bag, and the inner bag (22) includes a plastic film bag.

4. The packaging system for nylon dry chip filling according to claim 3, characterized in that, The outer bag (21) has a closed first end and an open second end. The inner bag (22) has a closed first end and an open second end. The open end of the inner bag (22) is located inside the open end of the outer bag (21), and both open ends face upward toward the filling outlet (11).

5. The packaging system for nylon dry chip filling according to claim 4, characterized in that, The opening end of the inner bag (22) is fixed to the inside of the opening end of the outer bag (21).

6. The packaging system for nylon dry chip filling according to claim 1, characterized in that, The first end of the hose (31) is provided with an air inlet (310), the second end of the hose (31) is connected to a compressed air source (33), and the air valve (32) is provided between the hose (31) and the compressed air source (33). When gas is injected into the inner bag (22), the air inlet (310) extends into the lower end of the inner bag (22).

7. The packaging system for nylon dry chip filling according to claim 1, characterized in that, The gas injected into the inner bag (22) by the hose (31) is a dry gas.

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