A negative pressure suction roller device for a carding machine

Abstract

A kind of negative pressure suction roller device suitable for carding machine, brush roller is equipped above suction roller, and suction roller includes center suction pipe equipped with airfoil blade, outer layer roller body and sealing plate mounted on airfoil blade, center suction pipe, sealing plate and inner side of outer layer roller body form certain angle fan-shaped area, suction pipe wall in fan-shaped area is evenly distributed with air hole along axial direction, and the lumen at both ends of suction pipe is connected with external fan through pipeline;The present application adopts the roller body with negative pressure suction function and can float, the outer layer roller body is nickel mesh, the web on the upper conveying curtain is adsorbed on the surface of outer layer roller body by using negative pressure and rotates a certain radian, and timely falls off and merges with the web on the lower conveying curtain, can exclude the air bubble generated when two layers of web merge, can improve the longitudinal strength of web and the surface quality of web.The device can also clean the residual fiber on the surface of nickel mesh roller in time, prevent a large amount of web from accumulating at the press web and crushing the nickel mesh, reduce downtime, and greatly improve production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the web transfer device of carding machine in nonwoven machinery, in particular to a negative pressure suction roller device for carding machine. BACKGROUND

[0002] With the improvement of national living standards, the application of nonwoven fabric is more and more widely, the domestic nonwoven production line speed is faster and faster, and the product quality requirement is also improved. In the production process of spunlace nonwoven fabric, the carding machine is one of the main units, which further opens, mixes the fibers of the previous opening and cleaning process, and at the same time, the blocky fibers are carded into a thin fiber web composed of single fibers. For the carding machine with double-doffer web forming structure, the upper layer web and the lower layer web are transported through the upper conveying curtain and the lower conveying curtain respectively. The webbing device is provided at the webbing place of the upper conveying curtain and the lower conveying curtain. The speed of the lower webbing curtain is greater than that of the upper webbing curtain, the webbing is not backwound by the upper conveying curtain, and the webbing is smoothly transferred.

[0003] The existing webbing device, the webbing roller is in fixed form, a large amount of webbing is accumulated at the webbing roller, which may cause parking phenomenon. The brush cleaning roller is not configured above the webbing roller, the outer roller body is stainless steel punched steel plate net, and the surface is easy to stick flowers and not easy to clean. With the increasing speed of the carding machine, the speed difference between the lower conveying curtain and the upper conveying curtain is larger and larger, the webbing is excessively stretched and damaged in the transfer process, the air between the two layers of webbing is not discharged in time when the webbing is webbed, and the air bubble phenomenon occurs, which leads to low longitudinal strength of the webbing and poor surface quality of the webbing, and finally affects the quality of the product. SUMMARY

[0004] The purpose of the present application is to provide a negative pressure suction roller device for carding machine, which adopts a floating roller body with negative pressure suction function, the outer roller body is nickel mesh, the surface is smooth and does not hang the webbing, the webbing on the upper conveying curtain is adsorbed on the surface of the outer roller body by negative pressure, rotates a certain radian, and is timely detached and combined with the webbing on the lower conveying curtain, which can improve the longitudinal strength of the webbing and the surface quality of the webbing.

[0005] The purpose of the present application is achieved by the following technical scheme:

[0006] The utility model provides a kind of negative pressure suction roller device suitable for carding machine, including suction roller, synchronous pulley that is combined with the outer layer roller body one end of suction roller, synchronous pulley is connected with driving device by synchronous belt, and driving device is installed on wallboard, wherein: brush roller is provided above suction roller, and is passively rotated and attached to the surface of suction roller body;Suction roller and brush roller both ends are installed on the floating support correspondingly arranged, and floating support is arranged on wallboard;The suction roller includes the center suction pipe being provided with airfoil blade, outer layer roller body and the sealing plate being installed on airfoil blade, center suction pipe, sealing plate and outer layer roller body inside form a certain angle sector area, the wind hole is uniformly distributed on the tube wall of center suction pipe in sector area along the axial direction, outer layer roller body is connected with center suction pipe by bearing, center suction pipe is fixed, and its both ends are supported on floating support, and outer layer roller body does rotary motion relative to center suction pipe, and the tube cavity of both ends of center suction pipe is connected with external fan by pipeline;The negative pressure suction roller device is installed on the rack of upper conveying curtain driving roller at the place where upper conveying curtain and lower conveying curtain are combined.

[0007] The floating support includes movable plate that is attached to the surface of wallboard and can be oriented to slide, upper and lower clamping plates that are fixed on movable plate, positioning rod for installing movable plate, guide rod, spring and slide; both ends of the center suction pipe of the suction roller are clamped in the round hole formed by the upper and lower clamping plates, and both ends of the brush roller are placed in the U-shaped structure of the upper clamping plate. When a large amount of fiber web accumulates at the web pressing point during test running or production, the suction roller is subjected to the upward force of the fiber web, the spring is compressed, and the suction roller mounted on the movable plate slides upward, which can prevent the fiber web from being crushed by the outer layer roller body and causing unexpected shutdown.

[0008] The center suction pipe provided with airfoil blades is an aluminum alloy integrally formed structure, and a partition plate is arranged at the middle position of the center suction pipe to ensure uniform air volume in the pipe.

[0009] The distance between the outer edge of the sealing plate and the outer layer roller body is 0.5-1.5 mm to ensure that the outer layer roller body does not interfere with the sealing plate during rotation.

[0010] The outer layer roller body is a nickel mesh with an opening rate controlled at 13%-30%, and the inner and outer surfaces and holes of the nickel mesh are smooth without burrs to ensure smooth airflow.

[0011] By adjusting the up-down position of the wallboard and the horizontal position of the upper conveying curtain driving roller, the distance between the suction roller and the upper and lower conveying curtains is ensured to be 8-12 mm.

[0012] By loosening the connecting bolts of the upper and lower clamping plates, the center suction pipe of the suction roller is rotated to ensure that the sector area is opposite to the arc length between the tangent points of the suction roller and the upper and lower conveying curtains.

[0013] The strip-shaped wind holes are uniformly distributed on the tube wall of the center suction pipe in the sector area along the axial direction.

[0014] The working principle of the present application is as follows:

[0015] Firstly, the suction roller is installed at the webbing position of the upper conveying curtain and the lower conveying curtain, the two ends of the suction pipe are connected with the fan through the pipeline, the sealing plate and the airfoil blade form a certain angle fan-shaped negative pressure area with the inner side of the outer roller body, the web on the upper conveying curtain is adsorbed on the surface of the outer roller body by negative pressure, and is transferred with the outer roller body by one fan-shaped arc length, and finally falls off in time and merges with the web on the lower conveying curtain, avoiding the problems of web back belt on the upper conveying curtain and excessive stretching of the web on the lower conveying curtain, the air between the two layers of web can be discharged in time by using negative pressure to avoid the generation of air bubbles. Secondly, the distance between the suction roller and the upper conveying curtain and the lower conveying curtain needs to meet 8-12mm, and the fan-shaped negative pressure area of the suction roller needs to be opposite to the arc length between the tangent points of the suction roller and the upper conveying curtain and the lower conveying curtain, so as to ensure the smooth transfer of the web; thirdly, when a large amount of web accumulates at the web pressing position, the spring is pressed, and the suction roller and the brush roller fixed on the floating support float upward as a whole. Fourthly, the brush roller is passively rotated on the surface of the nickel mesh, and the residual fibers on the surface of the nickel mesh roller are cleaned.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The outer roller body of the suction roller adopts a deposited nickel mesh, the inner and outer surfaces and holes are smooth without burrs, the surface is guaranteed not to hang the web, a brush roller is arranged above the suction roller, and residual fibers on the surface of the nickel mesh roller can be cleaned in time.

[0018] 2. The web on the upper conveying curtain is adsorbed on the surface of the outer roller body by negative pressure and rotates together, finally falls off in time and merges with the web on the lower conveying curtain, avoiding the problems of web back belt on the upper conveying curtain and excessive stretching of the web on the lower conveying curtain, and the air bubbles generated when the two layers of web merge can be discharged, thereby improving the longitudinal strength of the web and improving the surface quality of the web.

[0019] 3. The present application can prevent a large amount of web from accumulating at the web pressing position during trial running or production, and the nickel mesh is not damaged, thereby reducing the downtime and greatly improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the prior art structure;

[0021] Figure 2 is a schematic diagram of the structure of the present application;

[0022] Figure 3 is Figure 2 A-A sectional view of

[0023] Figure 4 is a schematic diagram and an axonometric view of the structure of the suction roller 7;

[0024] Figure 5 This is the axonometric drawing of the central suction pipe structure;

[0025] Figure 6 It is a structural schematic diagram and axonometric drawing of the floating support 6;

[0026] Figure 7 It is the schematic diagram and axonometric drawing of the movable plate;

[0027] Figure 8 It is a schematic diagram of the principle of the present invention;

[0028] Serial numbers in the figure: 1. Upper conveyor curtain; 2. Lower conveyor curtain; 3. Frame; 4. Active roller of upper conveyor curtain; 5. Wall panel; 6. Floating bracket; 6-1. Movable plate; 6-2. Positioning rod; 6-3. Guide rod; 6-4. Upper clamping plate; 6-5. Lower clamping plate; 6-6. Bearing; 6-7. Slide; 6-8. Spring; 7. Suction roller; 7-1. Outer roller body; 7-2. Central suction pipe; 7-3. Sealing plate; 8. Brush roller; 9. Driving device; 10. Synchronous pulley; 11. Air duct (pipe); 12. Fan. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the following embodiments (with accompanying drawings):

[0030] like Figures 2-8 FIG. 1 shows a negative pressure suction roller device suitable for a carding machine, comprising a suction roller 7, a synchronous pulley 10 combined with one end of an outer roller body 7-1 of the suction roller, the synchronous pulley being connected to a drive device 9 via a synchronous belt, and the drive device 9 being mounted on a wall panel 5, wherein: a brush roller 8 is arranged above the suction roller 7, and is attached to the surface of the suction roller body and passively rotates; both ends of the suction roller 7 and the brush roller 8 are mounted on corresponding floating brackets 6, which are arranged on the wall panel 5; the suction roller 7 comprises a central suction pipe 7-2 with airfoil blades, an outer roller body 7-1, and a sealing plate 7 mounted on the airfoil blades. -3, the central suction pipe 7-2, the sealing plate 7-3 and the inner side of the outer roller body 7-1 form a fan-shaped area at a certain angle, and air holes are evenly distributed axially on the wall of the central suction pipe in the fan-shaped area. The outer roller body and the central suction pipe are connected by bearings. The central suction pipe 7-2 is fixed with its two ends supported on the floating bracket 6. The outer roller body 7-1 rotates relative to the central suction pipe 7-2, and the tube cavities at both ends of the central suction pipe 7-2 are connected to the external fan 12 through pipes (i.e., air duct 11); this negative pressure suction roller device is installed on the frame of the upper conveying curtain active roller at the junction of the upper conveying curtain 1 and the lower conveying curtain 2.

[0031] The floating support 6 (see the structure for Figure 6) including the attached to the wallboard surface settings and can be oriented to slide the movable plate 6-1, fixed on the movable plate on the upper and lower clamping plate and for installing the movable plate 6-1 positioning rod 6-2, guide rod 6-3, spring 6-8, slide 6-7; the center suction pipe 7-2 of the suction roller 7 is clamped in the circular hole formed by the upper clamping plate 6-4 and the lower clamping plate 6-5, and the brush roller 8 is placed in the U-shaped structure of the upper clamping plate 6-4. When a large amount of web accumulates at the press web during test running or production, the suction roller 7 is subjected to the upward force of the web, the spring 6-8 is compressed, and the suction roller mounted on the movable plate slides upward, which can avoid the accumulation of the web to crush the outer roller body and cause unexpected stop.

[0032] By loosening the connecting bolt of the upper clamping plate 6-4 and the lower clamping plate 6-5, rotating the center suction pipe 7-2 of the suction roller to ensure that the fan-shaped area is opposite the arc length between the tangent point of the suction roller and the upper conveying curtain 1 and the lower conveying curtain 2 (see Figure 8 ).

[0033] The present application is described in more detail as follows:

[0034] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 8 A negative pressure suction roller device suitable for a carding machine comprises: a suction roller 7 and a brush roller 8 mounted on a floating support 6, the floating support 6 and a driving device 9 mounted on a wallboard 5, a synchronous pulley 10 mounted at one end of an outer roller body 7-1 of the suction roller 7 and combined together by screws, the synchronous pulley 10 connected to the driving device 9 through a synchronous belt, the outer roller body 7-1 of the suction roller 7 rotates, and the center suction pipe 7-2 of the suction roller 7 is fixed; the center suction pipe 7-2 of the suction roller 7 is connected to a fan 12 fixed on the ground through a pipeline 11, and the fan 12 is a large air volume and small air pressure variable frequency control; the brush roller 8 is located above the suction roller 7 and passively rotates on the surface of the outer roller body 7-1 of the suction roller 7, which can clean the residual fibers on the surface of the roller body nickel mesh in time; finally, the wallboard 5 of the device is installed on the rack 3 of the upper conveying curtain 1 and the lower conveying curtain 2 webbing place of the upper conveying curtain driven roller 4. When working, the distance B between the outer roller body 7-1 of the suction roller 7 and the upper conveying curtain 1 and the distance C between the lower conveying curtain 2 need to meet the requirement of 8-12mm (see Figure 8 ), which can be achieved by adjusting the up-down position of the wallboard 5 and the horizontal position of the upper conveying curtain driven roller 4 to meet the distance requirement.

[0035] The floating support 6 (see Figure 6) including the positioning rod 6-2 fixed on the wall plate 5, the guide rod 6-3, the bearing 6-6 and the slide 6-7, the movable plate 6-1 is fixed and attached to the surface of the wall plate 5 through the positioning rod 6-2, the guide rod 6-3, the bearing 6-6 and the slide 6-7, the guide rod 6-3, the bearing 6-6 and the slide 6-7 play a guiding role on the movable plate 6-1, the bearing 6-6 is installed in the long circular hole of the movable plate 6-1, which ensures the flexible sliding of the movable plate 6-1; the upper clamp plate 6-4 and the lower clamp plate 6-5 are fixed on the movable plate 6-1, and the upper clamp plate 6-4 and the lower clamp plate 6-5 are used for fixing the suction roller 7 and the brush roller 8; the spring 6-8 is sleeved on the guide rod 6-3, the spring 6-8 is in a non-compressed state, and the nut at the lower end of the positioning rod 6-2 fixes the initial position of the movable plate 6-1, so that the suction roller 7 installed on the movable plate 6-1 is prevented from automatically falling due to the action of gravity. When a large amount of fiber web is accumulated at the net pressing place during test running or production, the suction roller 7 is subjected to the upward force of the fiber web, the spring 6-8 is compressed, the suction roller 7 installed on the movable support 6 slides upward, the fiber web is prevented from extruding the outer roller body 7-1 of the suction roller 7, and accidental shutdown is avoided.

[0036] The suction roller 7 (the outer roller body 7-1, the central suction pipe 7-2 and the sealing plate 7-3 are arranged in the suction roller 7) Figure 4 、 Figure 5 、 Figure 8 ) including the outer roller body 7-1, the central suction pipe 7-2 and the sealing plate 7-3, the outer roller body 7-1 is connected with the central suction pipe 7-2 through a bearing, the central suction pipe 7-2 is fixed on the floating support 6, and the outer roller body rotates relative to the central suction pipe 7-2. The sealing plate 7-3 is installed on the airfoil blade of the central suction pipe 7-2, the central suction pipe 7-2, the sealing plate 7-3 and the inner side of the outer roller body 7-1 form a certain angle fan-shaped area, the distance A between the sealing plate 7-3 and the outer roller body 7-1 needs to meet the requirement of 0.5-1.5 mm, so that the sealing plate 7-3 and the outer roller body 7-1 do not interfere with each other during relative rotation. Air flow is sucked from the surface pores of the outer roller body 7-1, discharged from both ends after passing through the long circular hole on the surface of the central suction pipe 7-2, and a negative pressure is formed in the fan-shaped area. During work, the fan-shaped negative pressure area needs to face the arc length between the tangent points B and C of the suction roller 7 and the upper conveying curtain 1 and the lower conveying curtain 2, the negative pressure adsorbs the fiber web on the upper conveying curtain 1 on the surface of the suction roller 7, and transfers the fiber web with the outer roller body 7-1 by one fan-shaped arc length, finally timely falls off and combines with the fiber web on the lower conveying curtain 2, avoids the problems of the fiber web back on the upper conveying curtain 1 and the excessive stretching of the fiber web on the lower conveying curtain 2, and can also eliminate the air bubbles generated when the fiber webs are combined, thereby improving the longitudinal strength of the fiber web and the surface quality of the fiber web.

[0037] The outer roller body 7-1 is a large-diameter deposited nickel mesh, the opening rate is controlled within 13%-30%, the inner and outer surfaces and the holes of the nickel mesh are smooth and free of burrs and fiber hooks, and the air flow can smoothly pass through.

[0038] The central suction pipe 7-2 is an aluminum alloy integrated structure, a plurality of long circular holes are uniformly distributed between the fan-shaped areas, and a circular plate is used to separate the middle to ensure uniform air volume.

Claims

1. A negative pressure suction roller device suitable for a carding machine, comprising a suction roller, a synchronous pulley coupled to one end of the outer roller body of the suction roller, the synchronous pulley being connected to a drive device via a synchronous belt, the drive device being mounted on a wall panel, and characterized in that: A brush roller is provided above the suction roller, which is attached to the surface of the suction roller and passively rotates; both ends of the suction roller and the brush roller are installed on corresponding floating brackets, and the floating brackets are installed on the wall panels; the suction roller includes a central suction pipe with airfoil blades, an outer roller body and a sealing plate installed on the airfoil blades, the central suction pipe, the sealing plate and the inner side of the outer roller body form a fan-shaped area at a certain angle, and air holes are evenly distributed on the wall of the central suction pipe located in the fan-shaped area along the axial direction, the outer roller body is connected to the central suction pipe by a bearing, the central suction pipe is fixed and its two ends are supported on the floating brackets, the outer roller body rotates relative to the central suction pipe, and the tube cavities at both ends of the central suction pipe are connected to the external fan through pipes; this negative pressure suction roller device is installed on the frame of the upper conveying curtain active roller where the upper conveying curtain and the lower conveying curtain are joined; The floating bracket includes a movable plate attached to the surface of the wall panel and capable of directionally sliding, upper and lower clamping plates fixed to the movable plate, and a positioning rod, a guide rod, a spring, and a slide for installing the movable plate; the two ends of the central suction pipe of the suction roller are clamped in the circular holes formed by the upper clamping plate and the lower clamping plate, and the two ends of the brush roller are placed in the U-shaped structure of the upper clamping plate; The distance between the outer edge of the sealing plate and the outer roller is 0.5-1.5mm to ensure that the outer roller does not interfere with the sealing plate when rotating; By adjusting the up and down position of the wall panel and the horizontal position of the upper conveyor curtain active roller, ensure that the distance between the suction roller and the upper conveyor curtain and the lower conveyor curtain is 8-12mm.

2. The negative pressure suction roller device for a carding machine according to claim 1, characterized in that: A partition is provided in the middle of the central suction pipe to ensure uniform air volume in the pipe.

3. The negative pressure suction roller device for a carding machine according to claim 1, characterized in that: The outer roller body is a nickel mesh with an opening rate controlled at 13%-30%. The inner and outer surfaces and holes of the nickel mesh are smooth and free of burrs, ensuring smooth passage of airflow.

4. The negative pressure suction roller device for a carding machine according to claim 1, characterized in that: The central suction pipe provided with airfoil blades is an integrally formed structure of aluminum alloy.

5. The negative pressure suction roller device for a carding machine according to claim 1, characterized in that: By loosening the connecting bolts between the upper and lower clamping plates, rotate the central suction pipe of the suction roller to ensure that the fan-shaped area is directly opposite the arc length between the tangent points of the suction roller and the upper and lower conveying curtains.

6. The negative pressure suction roller device for a carding machine according to claim 1, characterized in that: Strip-shaped air holes are evenly distributed along the axial direction on the wall of the central suction pipe located in the fan-shaped area.

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