A roving frame guide mechanism

Abstract

This invention provides a roving frame guide mechanism, including a guide cover, within which multiple guide rollers are rotatably connected. A drive motor for rotating all guide rollers is mounted outside the guide cover. The inlet end of the guide cover is connected to multiple flared feed ports distributed along its width, with the larger end of each flared feed port facing away from the guide cover. Two opposing compaction rollers are rotatably connected to the smaller end of each flared feed port inside the guide cover. The outer circumference of each compaction roller is concave inward to form an annular compaction groove. A partition is provided above the guide rollers in the guide cover, forming a negative pressure chamber above the partition. The partition has several negative pressure suction holes. A negative pressure pipe communicating with the negative pressure chamber is connected outward to one side of the guide cover. This invention effectively absorbs fly waste, preventing environmental pollution, and applies pressure to the yarn, effectively reducing the generation of burrs and fly waste.

Description

Technical Field

[0001] This utility model belongs to the field of textile machinery processing technology, and relates to a guide mechanism for a roving frame. Background Technology

[0002] In ring spinning, the roving frame's guide mechanism is a crucial link connecting drawing and drafting. Its core function is to transport the sliver from the can to the drafting zone with stable tension and uniformity. Existing guide mechanisms typically consist of a guide bell, guide rollers, and a traverse mechanism: after initial guidance through the bell, the sliver is pulled by the guide rollers with slight tension, and the reciprocating motion of the traverse mechanism ensures uniform feeding into the back roller nip area. This design aims to reduce accidental drafting of the sliver during transport and ensure the stability of the drafting zone.

[0003] However, in actual production, existing guide roller mechanisms still have significant defects. During the process of the sliver being drawn from the can and conveyed to the guide roller, the cohesion between fibers is weak, making them susceptible to fluctuations in workshop temperature and humidity (such as static electricity buildup due to low humidity), mechanical friction (such as wear on the inner wall of the bell or fiber adhesion to the guide roller surface), and uneven tension. This causes fibers to escape from the yarn body, forming a large amount of fly waste. This fly waste not only pollutes the environment and increases cleaning costs, but may also re-adhere to the yarn or get caught in the roving, forming yarn defects. At the same time, due to insufficient holding force or wear of the guide components, the fibers at the edge of the sliver often exhibit burrs, damaging the integrity of the yarn structure. Burred yarns are prone to slippage or localized drafting abnormalities during drafting, ultimately leading to uneven roving evenness, increased neps, and a higher breakage rate, severely restricting the improvement of spinning efficiency and product quality. Utility Model Content

[0004] The purpose of this invention is to provide a roving frame guide mechanism that can effectively absorb fly waste, prevent it from polluting the environment, and apply pressure to the yarn to effectively reduce the generation of burrs and fly waste.

[0005] To solve the above-mentioned technical problems, this utility model provides a roving frame guide mechanism, including a guide cover, in which multiple guide rollers are rotatably connected. A drive motor for driving all guide rollers to rotate is installed outside the guide cover. The inlet end of the guide cover is connected to multiple horn-shaped feed ports distributed along its width direction. The large end of each horn-shaped feed port faces away from the guide cover. Inside the guide cover, at the small end of each horn-shaped feed port, two opposing compaction rollers are rotatably connected. The outer circumference of each compaction roller is recessed inward to form an annular compaction groove.

[0006] The guide cover has a partition layer above the guide roller, and a negative pressure cavity is formed above the partition layer. The partition layer has several negative pressure suction holes. A negative pressure pipe communicating with the negative pressure cavity is connected to one side of the guide cover. The free end of the negative pressure pipe is used to connect to a negative pressure dust collection device.

[0007] By adopting the above technical solution, when the roving frame guide mechanism is working, the yarn enters from the large end of the trumpet-shaped feed inlet and is guided by the annular guide groove on the guide roller and guide wheel. During the conveying process, the compaction roller compacts the yarn to prevent the edge fibers of the yarn from producing burrs due to insufficient gripping force or wear of the guide components. At the same time, the negative pressure chamber above the guide cover absorbs fly waste through the negative pressure suction hole to prevent fly waste from polluting the environment and reduce the possibility of fly waste re-attaching to the yarn or being wound into the roving to form yarn defects.

[0008] The present invention is further configured such that one end of each guide roller extends out of the guide cover and is provided with a pulley, all pulleys are driven by a transmission belt, and the power output shaft of the drive motor is connected to one end of one of the guide rollers.

[0009] The present invention is further configured such that each guide roller is fitted with a plurality of guide rollers corresponding one-to-one with the horn-shaped feed inlet, and the outer periphery of each guide roller is recessed inward to form a ring-shaped guide groove.

[0010] The present invention is further configured such that each annular guide groove and each annular compaction groove have smooth surfaces.

[0011] The present invention is further configured such that each compaction roller is made of nitrile rubber.

[0012] The present invention is further configured such that one end of the guide cover is provided with a connecting plate connected to each horn inlet, and the connecting plate is provided with a plurality of connecting frames that are rotatably connected to the compaction rollers one by one.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Firstly, after the yarn passes through the trumpet-shaped feed inlet, it is pressed down by the annular compaction grooves on the two compaction rollers. This slight compaction increases the contact pressure and friction between the fibers inside the sliver, making the fiber bundles tighter. This effectively reduces the loss of fibers at the edge of the sliver, reduces burrs, and significantly reduces fly waste generated in the guide roller and back roller areas, improving the workshop environment and reducing yarn hairiness.

[0015] Secondly, when using guide rollers to guide the yarn, a negative pressure dust collection device is used to create negative pressure in the negative pressure chamber, which in turn draws in the fly shavings generated by the negative pressure suction holes, effectively preventing fly shavings from entering the workshop and polluting the environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0018] Figure 3 Used to demonstrate the internal structure of the guide housing.

[0019] The components include: 1. Guide cover; 2. Guide roller; 3. Pulley; 4. Transmission belt; 5. Drive motor; 6. Guide roller; 7. Annular guide groove; 8. Connecting plate; 9. Horn-shaped feed inlet; 10. Connecting frame; 11. Compacting roller; 12. Annular compaction groove; 13. Partition; 14. Negative pressure suction hole; 15. Negative pressure pipe. Detailed Implementation

[0020] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the guide bar mechanism for a roving frame according to this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0021] Example, refer to Figure 1-3 A roving frame guide mechanism includes a guide cover 1, three guide rollers 2 rotatably connected inside the guide cover 1, one end of each guide roller 2 extending out of the guide cover 1 and equipped with a pulley 3, all pulleys 3 being driven by a transmission belt 4, a drive motor 5 for driving all guide rollers 2 to rotate is installed outside the guide cover 1, the power output shaft of the drive motor 5 is connected to one end of one of the guide rollers 2, each guide roller 2 is covered with five guide rollers 6 distributed along its length, and the outer periphery of each guide roller 6 is recessed inward to form an annular guide groove 7.

[0022] A connecting plate 8 is provided at the inlet end of the guide cover 1. The connecting plate 8 is connected to five trumpet-shaped feed ports 9 distributed along its width direction and corresponding one-to-one with the guide rollers 6 on each guide roller 2. The large opening end of each trumpet-shaped feed port 9 faces away from the guide cover 1. The connecting plate 8 is provided with five connecting frames 10 that are rotatably connected to each compaction roller 11. Each connecting frame 10 is rotatably connected to two oppositely arranged compaction rollers 11. Each compaction roller 11 is made of nitrile rubber, and the two compaction rollers 11 at each trumpet-shaped feed port 9 are arranged vertically opposite each other. The outer circumference of each compaction roller 11 is concave inward to form an annular compaction groove 12. The two annular compaction grooves 12 cooperate to press the yarn and apply pressure to the yarn. Through slight compaction, the contact pressure and friction between the fibers inside the cotton sliver can be increased, making the fiber bundle more compact. The surfaces of each annular guide groove 7 and each annular compaction groove 12 are smooth.

[0023] A partition 13 is provided above the guide roller 2 in the guide cover 1. A negative pressure cavity is formed above the partition 13 in the guide cover 1. The partition 13 has several negative pressure suction holes 14. The generated fly waste enters the negative pressure cavity through the negative pressure suction holes 14. A negative pressure pipe 15 is connected to the negative pressure cavity from one side of the guide cover 1. The free end of the negative pressure pipe 15 is used to connect to the negative pressure dust collection equipment. The negative pressure dust collection equipment has the function of generating negative pressure and accumulating dust. It is a commonly used equipment in existing textile workshops, so it will not be described in detail here.

[0024] Working principle: When the roving frame guide mechanism is working, the yarn enters from the large end of the trumpet feed port 9 and is guided by the annular guide groove 7 on the guide roller 2 and guide roller 6. During the conveying process, the compaction roller 11 compacts the yarn to prevent the edge fibers of the yarn from producing burrs due to insufficient gripping force or wear of the guide components. At the same time, the negative pressure chamber above the guide cover 1 absorbs fly waste through the negative pressure suction hole 14 to prevent fly waste from polluting the environment and reduce the possibility of fly waste re-attaching to the yarn or being rolled into the roving to form yarn defects.

[0025] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0026] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A roving guide mechanism for a roving frame comprising a guide housing (1), characterized in that, Multiple guide rollers (2) are rotatably connected inside the guide cover (1). A drive motor (5) for driving all guide rollers (2) to rotate is installed outside the guide cover (1). Multiple horn-shaped feed inlets (9) distributed along its width direction are connected to the inlet end of the guide cover (1). The large end of each horn-shaped feed inlet (9) faces away from the guide cover (1). Two oppositely arranged compaction rollers (11) are rotatably connected inside the guide cover (1) at the small end of each horn-shaped feed inlet (9). The outer periphery of each compaction roller (11) is recessed inward to form a ring compaction groove (12). The guide cover (1) has a partition (13) above the guide roller (2). A negative pressure cavity is formed above the partition (13) of the guide cover (1). The partition (13) has a plurality of negative pressure suction holes (14). A negative pressure pipe (15) communicating with the negative pressure cavity is connected to one side of the guide cover (1). The free end of the negative pressure pipe (15) is used to connect to a negative pressure dust collection device.

2. A godet mechanism for a roving frame as claimed in claim 1, characterised in that, Each guide roller (2) has a pulley (3) extending out of the guide cover (1) at one end. All pulleys (3) are driven by a transmission belt (4). The power output shaft of the drive motor (5) is connected to one end of one of the guide rollers (2).

3. A godet mechanism for a roving frame as claimed in claim 1, characterised in that, Each guide roller (2) is covered with multiple guide rollers (6) that correspond one-to-one with the horn feed port (9). The outer periphery of each guide roller (6) is recessed inward to form a ring-shaped guide groove (7).

4. A godet mechanism for a roving frame as claimed in claim 3, characterised in that, Each annular guide groove (7) and each annular compaction groove (12) has a smooth surface.

5. A godet mechanism for a roving frame as claimed in claim 1, characterised in that, Each compaction roller (11) is made of nitrile rubber.

6. A godet mechanism for a roving frame as claimed in claim 1, characterised in that, One end of the guide cover (1) is provided with a connecting plate (8) connected to each horn feed port (9), and the connecting plate (8) is provided with a plurality of connecting frames (10) that are rotatably connected to the compaction rollers (11) one by one.

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