Waste edge recovery device for plastic woven bag production

Abstract

The utility model discloses a waste edge recovery device for plastic woven bag production, which is characterized in that the air outlet end and the feeding end of a material collecting tank are respectively communicated with the air inlet end of a negative pressure tank and the discharging ends of a plurality of material pipes, the negative pressure tank is communicated with an external negative pressure pump, a material crushing mechanism is arranged on the material pipes, and the material crushing mechanism comprises a first motor, a material crushing roller and a guide block, the two material crushing rollers are arranged in pairs from top to bottom and rotationally installed in the material pipe, the lowest position of the outer edge of the upper material crushing roller is lower than a waste edge in the material pipe, the first motor drives the two material crushing rollers to rotate oppositely through a gear transmission structure, the rotating direction is consistent with the advancing direction of the waste edge, and the guide block is installed in the material pipe and located at the feeding ends of the material crushing rollers. And the axis of the upper crushing roller is higher than the lowest end of the guide block. The device automatically receives, crushes and collects the waste edges in the production of the plastic woven bags, improves the working efficiency, reduces the manual participation, can greatly reduce the blockage probability of the plastic waste edges in the material pipe by virtue of the crushing mechanism, and ensures the negative-pressure material suction effect.

Description

Technical Field

[0001] This utility model relates to the technical field of waste edge recycling equipment for woven plastic bags, and in particular to a waste edge recycling device for woven plastic bag production. Background Technology

[0002] The general production line process for plastic woven bags (hereinafter referred to as woven bags) is as follows: raw materials (PP, PE, or recycled materials), drying and mixing machine, drawing machine, winding machine, circular loom, bag cutting machine, sewing machine, printing machine, PP woven bags, and packaging machine. In the main bag-making process, plastic filaments are first woven into tubular bags on a circular loom, then cut in a bag cutting machine, and finally sewn into bags by a sewing machine. Because the specifications and sizes of each batch of woven bags are different, under the condition of fixed tubular bag size, it is generally unavoidable to trim the edges of the tubular bags during cutting, which will generate plastic waste.

[0003] In actual production, waste edges are usually wound up by winding machines on both sides of the woven bag production line. Then, workers feed the wound edges into a crusher to be crushed, and finally the crushed material is mixed with the raw materials for reuse. This method of processing waste edges is cumbersome, requires a lot of manual intervention, and is extremely slow. There is an urgent need for a device that can automatically process and recycle waste edges to improve work efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a waste edge recycling device for woven plastic bags, so as to solve the problem that traditional recycling of waste edges from woven plastic bags involves a lot of manual intervention and is extremely inefficient.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A waste edge recycling device for woven plastic bags includes a collection tank, a negative pressure tank, material pipes, and a crushing mechanism. The air outlet and inlet of the collection tank are respectively connected to the air inlet of the negative pressure tank and the outlets of the multiple material pipes. The negative pressure tank is connected to an external negative pressure pump. The crushing mechanism is installed on the material pipes.

[0007] The crushing mechanism includes a first motor, crushing rollers, and a guide block. The two crushing rollers are arranged in pairs from top to bottom and are rotatably installed inside the material tube. The lowest point of the outer edge of the upper crushing roller is lower than the waste edge inside the material tube. The first motor drives the two crushing rollers to rotate in opposite directions through a gear transmission structure, and the rotation direction is consistent with the forward direction of the waste edge. The guide block is installed inside the material tube and located at the feed end of the crushing rollers. The axis of the upper crushing roller is higher than the lowest point of the guide block.

[0008] A further technical solution is: the shredding roller includes a roller body and tearing blades, the tearing blades are evenly arranged on the roller body, and the tearing blades on two adjacent roller bodies are staggered.

[0009] A further technical solution is that the outer end of the tearing blade is provided with a serrated blade.

[0010] A further technical solution is that the side cross-section of the tearing blade is tapered.

[0011] A further technical solution is that a horn-shaped tube is provided at the feed end of the material tube.

[0012] A further technical solution is that an inclined screen is provided inside the collection tank.

[0013] A further technical solution is that the air inlet of the negative pressure tank and the discharge end of the material pipe are located below and above the screen, respectively.

[0014] A further technical solution is: the material pipe includes a main pipe and multiple branch pipes connected to the main pipe, and the crushing mechanism is installed on the branch pipes.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] This invention proposes a waste edge recycling device for woven plastic bag production. It automatically collects, crushes, and gathers waste edges produced during woven plastic bag manufacturing, integrating multiple processing steps into one unit. This improves work efficiency and reduces manual intervention, while allowing the processed waste material to be directly reused. Furthermore, the crushing mechanism significantly reduces the probability of plastic waste edges clogging the feed pipe, ensuring effective negative pressure suction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the waste edge recycling device for the production of plastic woven bags according to this utility model.

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the crushing mechanism.

[0019] Figure 3 This utility model Figure 2 A schematic diagram of the structure of the intermediate crushing roller.

[0020] Figure 4 This utility model Figure 1 Schematic diagram of the material feed tube.

[0021] Reference numerals in the attached drawings: 1. Collection tank; 2. Negative pressure tank; 3. Material pipe; 31. Main pipe; 32. Branch pipe; 4. Crushing mechanism; 5. First motor; 6. Crushing roller; 7. Guide block; 8. Waste edge; 9. Roller body; 10. Tearing knife; 11. Horn tube; 12. Screen. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1:

[0029] This implementation example Figure 1 and Figure 2 As shown, a waste edge recycling device for woven plastic bags includes a collection tank 1, a negative pressure tank 2, material pipes 3, and a crushing mechanism 4. The air outlet and the material inlet of the collection tank 1 are connected to the air inlet of the negative pressure tank 2 and the material outlets of multiple material pipes 3, respectively. The negative pressure tank 2 is connected to an external negative pressure pump. The crushing mechanism 4 is installed on the material pipes 3. The crushing mechanism 4 includes a first motor 5, crushing rollers 6, and a guide block 7. Two crushing rollers 6 are arranged in pairs from top to bottom and are rotatably installed inside the material pipe 3. The lowest point of the outer edge of the upper crushing roller 6 is lower than the waste edge 8 inside the material pipe 3. The first motor 5 drives the two crushing rollers 6 to rotate in opposite directions through a gear transmission structure, and the rotation direction is consistent with the forward direction of the waste edge 8. The guide block 7 is installed inside the material pipe 3 and located at the material inlet of the crushing rollers 6. The axis of the upper crushing roller 6 is higher than the lowest point of the guide block 7.

[0030] Negative pressure tank 2 provides negative pressure, which is generated through the feed inlet of material pipe 3 to collect the waste edges of woven plastic bags on both sides of the bag cutting machine. Because the waste edges of woven plastic bags are relatively light and small, the required negative pressure is generally not very large. When waste edges are generated, workers first guide them into material pipe 3. Under the action of negative pressure and the limitation of cutting speed, the waste edges are straightened. The forward speed is consistent with the cutting speed. Then, at the crushing mechanism 4, the waste edges 8 are crushed by two crushing rollers 6. The crushed waste is sucked into the collection tank 1 by negative pressure for storage, or it can be transferred and mixed with raw materials for reuse.

[0031] It is worth noting that during the waste edge crushing process, the guide block 7 will guide the waste edge downward and into the space between the two crushing rollers 6. This downwardly tilted waste edge will tend to return to a horizontal state under the pull and guidance of negative pressure. This ensures that the waste edge 8 can be well attached to the crushing roller 6 above, ensuring the crushing effect of the crushing roller 6.

[0032] Example 2:

[0033] Based on the above embodiments, this embodiment, for example Figure 3As shown, the shredding roller 6 includes a roller body 9 and tearing blades 10. The tearing blades 10 are evenly arranged on the roller body 9, and the tearing blades 10 on adjacent roller bodies 9 are staggered. The outer end of the tearing blade 10 is provided with a serrated cutting edge.

[0034] As the tearing blade 10 rotates in a circular motion with the roller 9, it can cut the plastic waste edge. Because the tearing blade 10 is a blade of a certain width, it also has a tearing effect during cutting. Especially under the action of the serrated blade, the tearing effect is better. The waste edge 8 is formed into small pieces of debris under the action of the tearing blade 10. The effect of this is twofold: first, it prevents the ribbon-like waste edge 8 from knotting in the material tube 3 due to the large number of waste edges 8 being recycled at the same time, causing blockage of the material tube 3; second, by adopting the tearing method instead of the traditional cutting method, it can ensure the continuous generation of waste debris and avoid the problem of not being able to cut due to shearing.

[0035] Preferably, the side cross-section of the tearing blade 10 is tapered.

[0036] The side-tear blade 10 has a thinner and sharper tip to ensure its sharpness.

[0037] Preferably, the feed end of the feed pipe 3 is provided with a horn pipe 11.

[0038] The horn tube 11 facilitates the manual introduction of the waste edge 8 into it.

[0039] Preferably, the collection tank 1 is provided with an inclined screen 12. The air inlet of the negative pressure tank 2 and the discharge end of the material pipe 3 are located below and above the screen 12, respectively.

[0040] The screen 12 isolates the waste chips formed by the waste edge 8, but can also ensure a certain degree of air permeability. The material pipe 3 can form a material collection function by means of negative pressure.

[0041] Preferably, such as Figure 4 As shown, the material pipe 3 includes a main pipe 31 and multiple branch pipes 32 connected to the main pipe 31, and the crushing mechanism 4 is installed on the branch pipes 32.

[0042] Branch pipes 32 of material pipe 3 are respectively set to correspond to the output of each waste edge 8. With the help of the crushing mechanism 4, each waste edge 8 is collected in the form of waste chips at the main pipe 31.

[0043] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A waste edge recycling device for woven plastic bags, characterized in that: The system includes a collection tank (1), a negative pressure tank (2), material pipes (3), and a crushing mechanism (4). The air outlet and the feed inlet of the collection tank (1) are respectively connected to the air inlet of the negative pressure tank (2) and the discharge ends of the multiple material pipes (3). The negative pressure tank (2) is connected to an external negative pressure pump. The crushing mechanism (4) is installed on the material pipes (3). The crushing mechanism (4) includes a first motor (5), crushing rollers (6) and a guide block (7). The two crushing rollers (6) are arranged in pairs from top to bottom and are rotatably installed in the material tube (3). The lowest point of the outer edge of the upper crushing roller (6) is lower than the waste edge (8) inside the material tube (3). The first motor (5) drives the two crushing rollers (6) to rotate in opposite directions through a gear transmission structure, and the rotation direction is consistent with the forward direction of the waste edge (8). The guide block (7) is installed in the material tube (3) and located at the feed end of the crushing rollers (6). The axis of the upper crushing roller (6) is higher than the lowest point of the guide block (7).

2. The waste edge recycling device for woven plastic bags according to claim 1, characterized in that: The shredding roller (6) includes a roller body (9) and a tearing blade (10). The tearing blades (10) are evenly arranged on the roller body (9), and the tearing blades (10) on two adjacent roller bodies (9) are staggered.

3. The waste edge recycling device for woven plastic bags according to claim 2, characterized in that: The outer end of the tearing blade (10) is provided with a serrated blade.

4. The waste edge recycling device for woven plastic bags according to claim 2, characterized in that: The side section of the tearing blade (10) is conical.

5. The waste edge recycling device for woven plastic bags according to claim 1, characterized in that: The feed end of the feed tube (3) is provided with a horn tube (11).

6. The waste edge recycling device for woven plastic bags according to claim 1, characterized in that: The collection tank (1) is equipped with an inclined screen (12).

7. The waste edge recycling device for woven plastic bags according to claim 6, characterized in that: The air inlet of the negative pressure tank (2) and the discharge end of the material pipe (3) are located below and above the screen (12), respectively.

8. The waste edge recycling device for woven plastic bags according to claim 1, characterized in that: The material pipe (3) includes a main pipe (31) and a plurality of branch pipes (32) connected to the main pipe (31), and the crushing mechanism (4) is installed on the branch pipes (32).

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