A web-forming machine with rotatable main air duct

Abstract

A web-forming machine with a rotatable main air duct mainly comprises a main suction mechanism and an auxiliary suction duct mechanism, wherein the auxiliary suction duct mechanism is connected to the main suction mechanism through an annular sleeve. The present invention reduces a pair of pre-pressing rollers and a complete set of heating devices provided for the component, thereby saving energy consumption, reducing labor resources, and lowering production costs. The equipment has a simple structure and is safe and convenient to operate. In the present invention, when the web-forming machine frame is fixed, the main air duct can rotate freely within a range of 0-45°, so that the main suction duct forms a certain angle with the cloth running direction, which can effectively reduce the longitudinal and transverse strength ratio of the product; the horizontal width of the suction area can be changed, thereby changing the width of the final product, so that one web-forming machine can produce products of various widths, saving manufacturing and labor costs.

Description

Technical Field

[0001] The patent of this invention belongs to the field of nonwovens and relates to a web-forming machine. Background Art

[0002] The web-forming machine frame is a frame-shaped frame, a mesh curtain is laid on the upper surface of the frame, and the tow is received above the web-forming machine. A main suction duct and an auxiliary suction duct are arranged at the lower part of the tow and the fiber web in the web-forming machine frame. The main suction area is the position where the tow falls to the web-forming machine, and the auxiliary suction area is to enable the fiber web to smoothly transition on the mesh curtain. The main suction duct and the auxiliary suction duct are connected to the fan trench. An electrostatic eliminator is fixed at the upper part of the web-forming machine frame and at the corresponding position of the auxiliary suction duct. A front guide walkway is arranged in the running direction of the electrostatic eliminator and the fiber web, and a rear guide walkway is arranged behind the web-forming machine tow. Both the front guide walkway and the rear guide walkway are fixed on the web-forming machine frame, and a front guide bracket is fixed at the front end of the web-forming machine frame. The upper part of the front guide bracket is fixed to the front support frame of the front guide assembly by bolts, one end of the front support frame is fixedly connected to one end of the web forming machine frame, and the other end of the front support frame is provided with a front guide roller. The front guide static eliminator is fixedly connected to the upper part of the front support frame, and two guide rollers are fixed inside the front end of the web forming machine frame, and the upper and lower positions of the two guide rollers correspond to each other. The rear guide roller is fixed to the upper and lower parts of the rear end of the web forming machine frame, and a tensioning device, an active guide roller and a correction device are arranged at the rear end of the web forming machine frame. The mesh curtain of the web forming machine is wound around the active guide roller, the tensioning roller of the tensioning device, the rear guide roller, the front guide roller, the guide roller and the correction roller of the correction device, and the active guide roller drives the movement of the mesh curtain.

[0003] There are multiple porous plates at the air inlet of the main suction duct and the auxiliary suction duct. In order to adjust the wind pressure, the opening rate of the porous plates at different positions is different. There are several nylon rods on the porous plates, and the distance between adjacent nylon rods is the same. The nylon rods support the mesh curtain, so that an air cavity is formed between the mesh curtain and the porous plate, which plays a role in further stabilizing the wind pressure. The mesh curtain has good air permeability, rough surface and anti-static property, which ensures the air flow while preventing the fiber mesh and mesh curtain from slipping and static adsorption, improving the quality of the net laying and preventing the net from turning over.

[0004] Most of the existing web-forming machine suction ducts are fixed on the frame, the ducts cannot be moved at will, the suction area cannot be adjusted, and the product width is single, and the longitudinal and transverse strength ratio is large. The suction duct structure basically adopts a structure in which the suction duct direction is perpendicular to the walking direction or at a fixed angle. After laying the web with this vertical structure, the fibers in the fiber web are mostly arranged longitudinally and less distributed transversely, resulting in a large longitudinal and transverse strength ratio of the product. If the angle between the two is changed to a fixed angle, the longitudinal and transverse strength ratio will be slightly improved, but the width and index parameters are single and cannot be adjusted. Summary of the invention

[0005] The object of the present invention is to provide a web-forming machine with uniform air suction, adjustable wind speed, stable operation and freely rotatable main air duct under the condition that the frame is fixed.

[0006] The invention mainly comprises a main air suction mechanism and an auxiliary air suction duct mechanism.

[0007] Among them, the main air suction mechanism includes a main air duct bracket, an annular sleeve, a main air duct air volume regulating valve, an arc slide rail, a slider, an outer gear ring, a main air duct, a toothed belt, a motor, a gear, a wind shield, a nylon gang and a porous plate. The main air duct bracket is fixed to the lower part of the web-forming machine frame, the annular sleeve is arranged at the lower part of the main air duct bracket, two corresponding arc slide rails are arranged at the lower part of the inner wall of the annular sleeve, and the sliders are respectively slidably connected on the two arc slide rails, and the sliders are fixed on the main air duct. The main air duct is a downward suction type air suction channel, and partitions are arranged in the main air duct. A main air duct air volume regulating valve with adjustable air volume is arranged at each partition opening at the bottom of the main air duct. An outer gear ring is arranged at the lower part of the main air duct, and the outer gear ring is connected to the gear through a toothed belt. The gear is sleeved on the output end of the motor, and the motor is fixed on the main air duct bracket. The annular sleeve is connected to the main air duct. During the rotation of the main air duct, the annular sleeve forms two semicircular suction areas in the front and rear, namely, a semicircular suction area in the spinning direction and a semicircular suction area in the opposite direction of spinning. A wind shield is provided on the semicircular suction area in the opposite direction of spinning for covering. A number of nylon rods and porous plates are installed on the semicircular suction area in the spinning direction near the bottom of the net curtain. The nylon rods prop up the net curtain to form an air cavity between the net curtain and the porous plate. The suction wind speed is regulated by the porous plate to form a transitional suction area.

[0008] The auxiliary air suction duct mechanism includes an auxiliary air duct and an auxiliary air duct air volume regulating valve. The auxiliary air duct is connected to the main air duct through an annular sleeve. The auxiliary air duct is for air suction on both sides. A vertical partition is arranged inside the auxiliary air duct. Each partition opening at both ends of the auxiliary air duct is provided with an auxiliary air duct air volume regulating valve with adjustable air volume.

[0009] When the present invention is in use, the motor starts to work, driving the gear to rotate, and the gear ring under the main air duct is transmitted to the main air duct through the toothed belt and rotates accordingly, so as to realize the centripetal rotation of the main air duct. During the rotation of the main air duct, the arc sleeve forms a semicircular suction area in the spinning direction and a semicircular suction area in the opposite direction of spinning. Since the semicircular suction area in the opposite direction of spinning does not need to be sucked, a wind shield is installed to cover it. The semicircular suction area in the spinning direction is installed near the bottom of the net curtain, and a nylon rod and a porous plate are installed to regulate the suction wind speed to form a transitional suction area. The auxiliary suction air duct is connected to the rotatable main air duct device. The auxiliary suction air duct adopts two-side suction, and the internal partition structure adopts vertical partition. Each partition port at both ends of the air duct is provided with an adjustable air volume regulating valve. The pre-pressing roller device is placed at the upper end of the auxiliary air duct, and an adjustable walkway is arranged in front. The active transmission device, the deviation correction device and the tensioning device of the web forming machine are all placed at the end of the whole body. The guide rollers of the net curtain are arranged at the front and back of the whole machine to realize the effective movement of the net belt.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] (1) When the web-forming machine frame is fixed, the main air duct can rotate freely within the range of 0-45°, so that the main suction air duct forms a certain angle with the cloth running direction, which can effectively reduce the longitudinal and transverse strength ratio of the product;

[0012] (2) The horizontal width of the suction area can be changed, thereby changing the width of the final product, so that one web-forming machine can produce products of various widths, saving manufacturing and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the present invention;

[0014] Figure 2 A top view of the present invention;

[0015] Figure 3 It is a front view of the main air duct of the present invention;

[0016] Figure 4 A top view of the main air duct of the present invention;

[0017] Figure 5 is a front view of the auxiliary air duct of the present invention;

[0018] Figure 6 is a top view of the auxiliary air duct of the present invention;

[0019] In the figure, 1-net-forming machine frame, 2-net curtain, 3-main air duct bracket, 4-annular sleeve, 5-arc slide rail, 6-slider, 7-main air duct, 8-main air duct air volume regulating valve, 9-external gear ring, 10-toothed belt, 11-gear, 12-motor, 13-semicircular suction area in spinning direction, 14-semicircular suction area in the opposite direction of spinning, 15-wind shield, 16-nylon rod, 17-porous plate, 18-auxiliary air duct, 19-auxiliary air duct air volume regulating valve, 20-static eliminator, 21-front guide walkway, 22-rear guide walkway, 23-front guide bracket assembly, 24-front guide static eliminator, 25-guide roller, 26-rear guide roller, 27-tensioning device, 28-active guide roller, 29-correction device. DETAILED DESCRIPTION

[0020] exist Figures 1 to 6In the schematic diagram of the present invention shown, the web-forming machine frame 1 is a frame-shaped frame, a net curtain 2 is laid on the upper surface of the frame, and the silk bundle is received above the web-forming machine. A main suction mechanism and an auxiliary suction duct mechanism are provided at the lower part of the silk bundle and the fiber web in the web-forming machine frame. The main suction area is the position where the silk bundle falls to the web-forming machine, and the auxiliary suction area is to enable the fiber web to smoothly transition on the net curtain. The main suction mechanism and the auxiliary suction duct mechanism are connected to the fan trench. The main suction mechanism includes a main duct bracket, an annular sleeve, a main duct air volume regulating valve, an arc-shaped slide rail, a slider, a gear ring, a main duct, a toothed belt, a motor, a gear, a windshield, a nylon gang and a porous plate. The main duct bracket 3 is fixed to the lower part of the web-forming machine frame, the annular sleeve 4 is provided at the lower part of the main duct bracket, and two corresponding arc-shaped slide rails 5 are provided at the lower part of the inner wall of the annular sleeve. Slide rails 6 are respectively slidably connected on the two arc-shaped slide rails, and the slider is fixed on the main duct. The main air duct 7 is a lower suction type air suction channel, and a partition is arranged in the main air duct. A main air duct air volume regulating valve 8 with adjustable air volume is arranged at each partition opening at the bottom of the main air duct. An outer toothed ring gear 9 is arranged at the lower part of the main air duct, and the outer toothed ring gear is connected to the gear 11 through a toothed belt 10. The gear is sleeved on the output end of the motor 12, and the motor is fixed on the main air duct bracket. The annular sleeve is connected to the main air duct, and during the rotation of the main air duct, the annular sleeve forms two semicircular suction areas in front and behind, namely, a semicircular suction area 13 in the spinning direction and a semicircular suction area 14 in the opposite direction of spinning. A windshield 15 is arranged on the semicircular suction area in the opposite direction of spinning for covering, and a nylon rod 16 and a porous plate 17 are installed near the bottom of the net curtain on the semicircular suction area in the spinning direction. The nylon rod supports the net curtain, so that an air cavity is formed between the net curtain and the porous plate, and the suction wind speed is regulated by the porous plate to form a transition suction area. The auxiliary air suction duct mechanism includes an auxiliary air duct and an auxiliary air duct air volume regulating valve. The auxiliary air duct 18 is connected to the main air duct through an annular sleeve. The auxiliary air duct is for air suction on both sides. A vertical partition is arranged inside the auxiliary air duct. Each partition opening at both ends of the auxiliary air duct is provided with an auxiliary air duct air volume regulating valve 19 with adjustable air volume.The static eliminator 20 is fixed at the upper part of the web-forming machine frame and the corresponding position of the auxiliary suction air duct. A front guide walkway 21 is provided in the direction of the static eliminator and the fiber web running direction. A rear guide walkway 22 is provided behind the web-forming machine tow. Both the front guide walkway and the rear guide walkway are fixed on the web-forming machine frame. A front guide bracket assembly 23 is fixed at the front end of the web-forming machine frame. The upper part of the front guide bracket is fixed to the front support frame of the front guide assembly by bolts. One end of the front support frame is fixedly connected to one end of the web-forming machine frame. The other end of the front support frame is provided with A front guide roller is fixedly connected to a front guide static eliminator 24 on the upper part of the front support frame, two guide rollers 25 are fixed inside the front end of the web-forming machine frame, and the upper and lower positions of the two guide rollers correspond to each other. A rear guide roller 26 is fixed to the upper and lower parts of the rear end of the web-forming machine frame, and a tensioning device 27, an active guide roller 28 and a correction device 29 are arranged at the rear end of the web-forming machine frame. The web curtain of the web-forming machine is wound around the active guide roller, the tensioning roller of the tensioning device, the rear guide roller, the front guide roller, the guide roller and the correction roller of the correction device, and the active guide roller drives the movement of the web curtain.

Claims

1. A web-forming machine with a rotatable main air duct, mainly comprising a main suction mechanism and an auxiliary suction duct mechanism, the web-forming machine frame is a frame-shaped frame, a net curtain is laid on the upper surface of the frame, and a tow is received above the web-forming machine, a main suction duct and an auxiliary suction duct are arranged at the lower part of the tow and the fiber web in the web-forming machine frame, the main suction area is the position where the tow falls to the web-forming machine, and the auxiliary suction area is to enable the fiber web to smoothly transition on the net curtain, the main suction duct and the auxiliary suction duct are connected to the fan trench, an electrostatic eliminator is fixed at the upper part of the web-forming machine frame and at the corresponding position of the auxiliary suction duct, a front guide walkway is arranged in the running direction of the electrostatic eliminator and the fiber web, and a The rear guide walkway, the front guide walkway and the rear guide walkway are all fixed on the web forming machine frame. The front guide bracket assembly is fixed to the front end of the web forming machine frame. The upper part of the front guide bracket is fixed to the front support frame of the front guide assembly by bolts. One end of the front support frame is fixedly connected to one end of the web forming machine frame. The other end of the front support frame is provided with a front guide roller. The front guide static eliminator is fixedly connected to the upper part of the front support frame. Two guide rollers are fixed inside the front end of the web forming machine frame. The upper and lower positions of the two guide rollers correspond to each other. The rear guide rollers are fixed to the upper and lower parts of the rear end of the web forming machine frame. A tensioning device, an active guide roller and a deviation correction device are provided at the rear end of the web forming machine frame. The characteristics are: The main air suction mechanism includes a main air duct bracket, an annular sleeve, a main air duct air volume regulating valve, an arc-shaped slide rail, a slider, an outer gear ring, a main air duct, a toothed belt, a motor, a gear, a wind shield, a nylon gang and a porous plate. The main air duct bracket is fixed to the lower part of the web-forming machine frame, the annular sleeve is arranged at the lower part of the main air duct bracket, two corresponding arc-shaped slide rails are arranged at the lower part of the inner wall of the annular sleeve, and the sliders are respectively slidably connected on the two arc-shaped slide rails, and the sliders are fixed on the main air duct. The main air duct is a downward suction type air suction channel, and partitions are arranged in the main air duct. A main air duct air volume regulating valve with adjustable air volume is arranged at each partition opening at the bottom of the main air duct. An outer gear ring is provided at the lower part of the main air duct, and the outer gear ring is connected to the gear through a toothed belt. The gear is sleeved on the output end of the motor, and the motor is fixed on the main air duct bracket. The annular sleeve is connected to the main air duct. During the rotation of the main air duct, the annular sleeve forms two semicircular suction areas in front and back, namely, a semicircular suction area in the spinning direction and a semicircular suction area in the opposite direction of spinning. A wind shield is arranged on the semicircular suction area in the opposite direction of spinning, and a nylon rod and a porous plate are installed near the bottom of the mesh curtain in the semicircular suction area in the spinning direction to form a transition suction area. The auxiliary suction duct mechanism is connected to the main suction mechanism through the annular sleeve.

2. The web-forming machine with a rotatable main air duct according to claim 1, characterized in that: The auxiliary air suction duct mechanism includes an auxiliary air duct and an auxiliary air duct air volume regulating valve. The auxiliary air duct is connected to the main air duct through an annular sleeve. The auxiliary air duct has air suction on both sides. Vertical partitions are arranged inside the auxiliary air duct. Auxiliary air duct air volume regulating valves with adjustable air volume are arranged at each partition opening at both ends of the auxiliary air duct.

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