A drawing head and air suction device

Abstract

The utility model relates to a kind of drawing frame head suction device, including air pipe, the air pipe one side is equipped with suction port, the suction port is broken line shape design, including with air pipe entrance and be inclined air port one, and air port two is butt-jointed in air port one, air port two inclination is greater than air port one, air port two and air port one are equipped with auxiliary mechanism, auxiliary mechanism includes the rubber of the most front edge paste in air port two.This case, rubber is carefully folded and bonded in the top surface and bottom surface of air port two, so that the folding part of air port two is more close to front leather roll, greatly increase wind area, compared with directly extending into air port, the flexible swing of rubber edge can dynamically adjust suction range, when fibre sliver is close to leather roll, rubber will slightly deform due to airflow pressure, expand local suction area, make negative pressure distribution more uniform, effectively make up the problem of uneven negative pressure caused by rigid air outlet due to too close distance.

Description

Technical Field

[0001] This utility model relates to the field of textile dust removal technology, and more specifically, to a drawing frame head suction device. Background Technology

[0002] The front roller of the drawing frame typically consists of a steel roller shaft as its core, covered with leather or synthetic rubber materials (such as nitrile rubber). Its structural design and characteristics are crucial to the operating efficiency and stability of textile machinery. It generally comprises three parts: inner and outer rings, rolling elements (steel balls or cylindrical rollers), and a cage. The inner and outer rings adopt a conical design to achieve accurate positioning and withstand high loads; the rolling elements maintain a low coefficient of friction and wear rate at high speeds; the cage ensures the correct position of the rolling elements and guides their movement. During the operation of the drawing frame, the front suction device plays a vital role. During the drafting process of the drawing frame, fibers generate a large amount of short fibers, dust, and impurities due to friction and combing operations. If these impurities are not removed in time, they will adhere to the front roller. The front suction device, through its powerful suction, can promptly remove these short fibers, dust, and impurities, keeping the drafting area clean and ensuring high-quality spinning.

[0003] Currently, due to the distance between the air outlet and the front roller, the blemishes near the front roller cannot be completely drawn into the duct, easily adhering to the roller surface and causing defective streaks. While directly lengthening the air outlet could expand the coverage area, it might increase the airflow velocity gradient—leading to excessively strong suction at the front and insufficient suction at the back, thus exacerbating uneven blemish distribution. Further analysis suggests that the distance between the air outlet and the roller needs to consider two key factors:

[0004] 1. Airflow uniformity: Ideally, the air inlet should form a stable negative pressure gradient so that the fibers are gradually adsorbed during the drafting process. If the distance is too close, the airflow will be overly concentrated near the roller, resulting in insufficient suction in areas far from the roller, leading to missed suction and fiber return.

[0005] 2. Equipment safety: Too close a distance may cause mechanical interference (such as the air outlet colliding with the roller or guide plate), affecting the stability of equipment operation.

[0006] Therefore, in order to address the above issues, it is necessary for the applicant to design a drawing machine head and a suction device. Utility Model Content

[0007] The purpose of this invention is to provide a drawing machine head and suction device to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, this utility model provides a drawing frame head suction device, comprising:

[0009] The air duct has an air intake on one side. The air intake has a zigzag design and includes an inclined air inlet 1 that connects to the air duct inlet and an inclined air inlet 2 that connects to the air inlet 1. The inclination of the air inlet 2 is greater than that of the air inlet 1. An auxiliary mechanism is installed on the air inlet 1 and the air inlet 2. The auxiliary mechanism includes a rubber sheet pasted on the leading edge of the air inlet 2. The part of the rubber sheet that extends beyond the air inlet 2 is folded and pasted to the bottom of the air inlet 2 and passes through an opening on one side of the protective shell. At the same time, the other end of the rubber sheet is wound around a rotating roller installed inside the protective shell. A drive mechanism is installed on the side of the protective shell.

[0010] Preferably, a guide roller is installed inside the protective shell, and the rubber sheet is attached to the top of the guide roller, passes through the opening on one side of the protective shell, and is parallel to the bottom of the second air vent.

[0011] Preferably, a sealing gasket is adhered to the inner wall of one side opening of the protective shell.

[0012] Preferably, the bottom of the protective shell is designed to be open, and a sealing plate is hinged to the bottom. The other end of the sealing plate is connected to the protective shell through an anti-loosening fastener.

[0013] Preferably, a writing plastic board that can be written on is installed on one side of the protective shell, and the writing plastic board has five sections.

[0014] Preferably, the drive mechanism includes a flange that fits against one side of the protective shell, a splined shaft and a turntable that are rotatably mounted on both sides of the flange, and the splined shaft and the turntable share a common shaft. The splined shaft is inserted into a round hole on one side of the protective shell and into the spline groove of the drum. The two sides of the drum are fitted with the annular plates at the ends of the splined shaft.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this case, the rubber sheet is carefully folded and bonded to the top and bottom surfaces of the second air outlet, so that the folded part beyond the second air outlet is closer to the front roller, which greatly increases the air receiving area. Compared with directly extending the air inlet, the flexible swing of the rubber sheet edge can dynamically adjust the air suction range. When the fiber strips approach the roller, the rubber sheet will undergo slight deformation due to the airflow pressure, expanding the local air suction area and making the negative pressure distribution more uniform. This effectively compensates for the problem of uneven negative pressure caused by the rigid air outlet being too close, and also has the flexibility to avoid mechanical interference.

[0017] 2. After prolonged use, the rubber may be damaged due to frequent contact with impurities, or excessive accumulation of impurities may affect the suction effect. In this case, remove the damaged rubber, unlock the turntable, have one worker hold the outer end of the rubber while another worker holds the turntable and rotates and pulls the rubber until the appropriate length is unwound, then lock the turntable shaft to complete the replacement. After changing the set length, the entire roll can also be removed for replacement, which is very convenient. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is an overall perspective view of a preferred embodiment of the present invention;

[0020] Figure 2 This is a front view of a preferred embodiment of the present invention;

[0021] Figure 3 The auxiliary mechanism three-dimensional structure of the preferred embodiment of this utility model Figure 1 ;

[0022] Figure 4 This is a front sectional view of the auxiliary mechanism according to a preferred embodiment of the present invention;

[0023] Figure 5 The auxiliary mechanism three-dimensional structure of the preferred embodiment of this utility model Figure 1 ;

[0024] Figure 6 This is a preferred embodiment of the present invention. Figure 4 Enlarged structure at point A Figure 1 ;

[0025] Figure 7 This is a structural diagram of the installation and testing of the moving mechanism according to a preferred embodiment of this utility model.

[0026] In the diagram: 1. Air duct; 2. Air intake; 21. Air outlet one; 22. Air outlet two; 3. Auxiliary mechanism; 31. Rubber sheet; 32. Roller; 33. Protective shell; 34. Sealing plate; 35. Fastener; 36. Writing plastic board; 37. Guide roller; 38. Sealing gasket; 4. Drive mechanism; 41. Flange; 42. Turntable; 43. Splined shaft. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0028] like Figures 1-7As shown, this utility model provides a drawing frame head and suction device, including a duct 1, which is installed at the upper part of the drawing frame, i.e. above the transport direction. The duct 1 can accommodate negative pressure structures such as fans. A suction port 2 is installed on one side of the duct 1. The suction port 2 has a zigzag design and includes a first air port 21 that is inclined and connected to the inlet of the duct 1, and a second air port 22 that is connected to the first air port 21. The inclination of the second air port 22 is greater than that of the first air port 21. An auxiliary mechanism 3 is installed on the second air port 22 and the first air port 21. The auxiliary mechanism 3 includes a rubber 31 pasted at the leading edge of the second air port 22. The part of the rubber 31 that extends beyond the second air port 22 is folded and pasted at the bottom of the second air port 22 and passes through an opening on one side of the protective shell 33. At the same time, the other end of the rubber 31 is wound around a roller 32 that is rotatably installed inside the protective shell 33. A drive mechanism 4 is installed on the side of the protective shell 33.

[0029] Through the design of auxiliary mechanism 3, during operation, the rubber sheet 31 is pulled out through the opening on one side of the protective shell 33, i.e., the roll 32 is unwound. After the rubber sheet 31 is pulled out to a certain length, glue is applied to two areas. Figure 4 At points b and c, the folded portion is then bonded to the top and bottom surfaces of air inlet 22, making the folded portion closer to the front roller. During the operation of the drawing frame, when the fiber passes the front roller in the transport direction, some impurities such as lint and fly shavings inevitably occur. At this time, starting the fan creates negative pressure in duct 1, drawing in these impurities through air inlet 2. Because the folded portion of rubber 31 is closer to the front roller, the air-receiving area is increased, effectively reducing the generation of defective strips. Furthermore, compared to directly extending air inlet 2, the flexible oscillation of the rubber edge can dynamically adjust the suction range. For example, when the fiber sliver approaches the roller, the rubber will undergo slight deformation due to airflow pressure, expanding the local suction area and making the negative pressure distribution more uniform. This adaptive capability can compensate for the uneven negative pressure caused by the rigid air outlet being too close. Note that the surface of rubber 31 has an antistatic coating.

[0030] Inside the protective shell 33, a guide roller 37 is installed. The rubber 31 passes through the top of the guide roller 37 and through the opening on one side of the protective shell 33, parallel to the bottom of the second air outlet 22. A sealing gasket 38 is bonded to the inner wall of the opening on one side of the protective shell 33, which is the opening through which the rubber 31 passes.

[0031] Furthermore, the guide roller 37 ensures that the pulled-out rubber sheet 31 is parallel to the air vent 22 after being pulled out, and also parallel to the opening, but with a slight gap. This allows for direct replacement from... Figure 6 The cutting and replacement can be done at point a, which is very convenient. Even if the roll 32 is continuously pulled out and the thickness decreases, it will not cause excessive pressure between the rubber 31 and the opening through which it passes, and the sealing gasket 38 plays a protective role.

[0032] The bottom of the protective shell 33 is designed with an opening, and a sealing plate 34 is hinged to the bottom. The other end of the sealing plate 34 is connected to the protective shell 33 through a fastener 35 (which is an existing technology and will not be described in detail here). A writing plastic board 36 that can be written on is installed on one side of the protective shell 33, and the writing plastic board 36 has five sections.

[0033] Furthermore, the sealing plate 34 can be opened to replace the roll 32, while the buckle 35 facilitates sealing and fixing, and the writing plastic plate 36 facilitates recording the number of replacements. When the record is full, it indicates that the rubber 31 has been replaced for the last time, and the roll 32 can be directly removed for replacement.

[0034] The drive mechanism 4 includes a flange 41 that fits against one side of the protective housing 33. A splined shaft 43 and a turntable 42 are rotatably mounted on both sides of the flange 41, and the splined shaft 43 and the turntable 42 share a common shaft. The splined shaft 43 is inserted through a circular hole on one side of the protective housing 33 and into the spline groove of the drum 32. Both sides of the drum 32 are close to the inner wall of the protective housing 33 and tightly fitted with the annular plate at the end of the splined shaft 43. Figure 7 The rotating shaft of turntable 42 can be manually locked, which is a current technical method.

[0035] With the design of the drive mechanism 4, during installation, the two sides of the drum 32 are inserted into the inner wall of the protective shell 33, and then the flange 41 is attached to both sides of the protective shell 33 for fixation. At this time, the spline shaft 43 is inserted into the spline groove of the drum 32 and presses the two sides of the drum 32 tightly. During daily operation, the shaft of the turntable 42 is locked. After the rubber 31 is damaged or too many impurities accumulate, the damaged part can be removed from point a, and the glue above and below the air outlet 2 can be cleared. At the same time, the lock of the turntable 42 is released. One worker pinches the outer end of the rubber 31, and another worker randomly holds one end of the turntable 42, rotates it at a small angle and pulls the rubber 31 outward a little (holding the turntable 42 tightly while pulling) until the appropriate length is unwound. Then the shaft of the turntable 42 is locked.

[0036] Working principle: During installation, the drum 32 is first placed inside the protective housing 33. Then, flanges 41 are attached to both sides of the protective housing 33 for fixation, allowing the spline shaft 43 to be accurately inserted into the spline groove of the drum 32. The ring plate on the spline shaft 43 presses against both sides of the drum 32. During operation, the rubber sheet 31 is folded and bonded to the top and bottom surfaces of the second air outlet 22, making the folded part beyond the second air outlet 22 closer to the front roller. This greatly increases the air receiving area, and the flexible swing of the rubber sheet edge compensates for the uneven negative pressure caused by the close proximity of the rigid air outlet. Afterwards, the drawing machine... During normal operation, when the fiber is transported through the front roller, impurities such as lint and fly lint will be generated. At this time, the fan is started to create negative pressure inside the air duct 1, which in turn drives the air inlet 2 to start suction operation. When the rubber sheet 31 is damaged or has accumulated too many impurities and needs to be replaced, the lock of the turntable 42 is released. One worker holds the outer end of the rubber sheet 31, and another worker randomly holds one end of the turntable 42, rotates it at a small angle and pulls the rubber sheet 31 outward a little (holding the turntable 42 tightly while pulling) until the appropriate length is unwound. Then the shaft of the turntable 42 is locked to complete the replacement.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A drawing frame head suction device, characterized in that, include: The air duct (1) has an air intake (2) installed on one side. The air intake (2) is a zigzag design, including an air outlet one (21) that is connected to the inlet of the air duct (1) and inclined, and an air outlet two (22) that is connected to the air outlet one (21). The inclination of the air outlet two (22) is greater than that of the air outlet one (21). Auxiliary mechanisms (3) are installed on the second air outlet (22) and the first air outlet (21); The auxiliary mechanism (3) includes a rubber sheet (31) pasted at the foremost edge of the second air vent (22). The part of the rubber sheet (31) that extends beyond the second air vent (22) is pasted at the bottom of the second air vent (22) by folding and passing through the opening on one side of the protective shell (33). At the same time, the other end of the rubber sheet (31) is wound around a roller (32) that is rotated and installed inside the protective shell (33). A drive mechanism (4) is installed on the side of the protective shell (33).

2. The drawing frame head suction device as described in claim 1, characterized in that, The protective shell (33) is equipped with a guide roller (37), and the rubber (31) passes through the top of the guide roller (37) and through the opening on one side of the protective shell (33) parallel to the bottom of the second air vent (22).

3. The drawing frame head suction device as described in claim 2, characterized in that, A sealing gasket (38) is adhered to the inner wall of the opening on one side of the protective shell (33).

4. The drawing frame head suction device as described in claim 3, characterized in that, The bottom of the protective shell (33) is designed with an opening, and a sealing plate (34) is hinged to the bottom. The other end of the sealing plate (34) is connected to the protective shell (33) through a fastener (35) to prevent loosening.

5. The drawing frame head suction device as described in claim 4, characterized in that, The protective shell (33) has a writing plastic board (36) that can be written on with a pen installed on one side, and the writing plastic board (36) has five sections.

6. The drawing frame head suction device as described in claim 5, characterized in that, The drive mechanism (4) includes a flange (41) that fits against one side of the protective shell (33). A spline shaft (43) and a turntable (42) are rotatably mounted on both sides of the flange (41). The spline shaft (43) and the turntable (42) share a common shaft. The spline shaft (43) is inserted into a round hole on one side of the protective shell (33) and inserted into the spline groove of the drum (32). The two sides of the drum (32) are tightly fitted with the end ring plate of the spline shaft (43).

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