CN117403379A - A device and method for preventing fiber webs from being flanged in a web laying machine - Google Patents

Abstract

The invention relates to the technical field of laying machines, and specifically to a device and method for preventing fiber webs of laying machines from flanging. The invention includes: a fixed plate, a support plate is fixedly installed on the fixed plate; an air supply pipe is rotatably installed on the fixed plate. On the support plate, the circumferential outer wall of the air supply pipe is provided with a plurality of equidistantly distributed No. 1 through slots. The support plate is provided with an angle adjustment component connected to the air supply pipe. The angle adjustment component can pass through The air supply pipe adjusts the angle of the No. 1 through slot; a transverse adjustment mechanism is provided on the support plate and connected to the angle adjustment component. The support plate is also provided with a transverse adjustment mechanism connected to the An air supply control mechanism, the air supply control mechanism is connected to the air supply pipe; it also includes: a conduction control mechanism, which is provided on the support plate and connected to the air supply pipe, and the conduction control mechanism can be connected to the air supply pipe. It acts when the air pipe rotates to adjust the conduction amount of the air supply pipe.

Description

A device and method for preventing fiber webs from being flanged in a web laying machine

Technical field

The present invention relates to the technical field of laying machines, specifically a device and method for preventing fiber webs of laying machines from flanging.

Background technique

The mesh laying machine is a mechanical equipment specially used to lay mesh materials. Its working principle is to drive the pulley to rotate through the drive system, and input materials to the pulley through the material library selection and conveying unit to complete the tensioning, transportation and configuration of the material. Once the mesh in the material reaches a certain size, it can be laid wherever desired using a mesh spreader.

During the laying process, due to the looseness and unevenness of the fiber raw materials, the fiber web is prone to flanging, that is, the fiber raw materials are turned up from the edges of the fiber web, which affects subsequent processing and product quality. At present, the commonly used solutions are to use manual compaction or add compaction devices, but these methods have problems such as cumbersome operation, low efficiency, and are not suitable for automated production lines. Therefore, there is an urgent need for a device that can automatically solve fiber web flanging.

Contents of the invention

The object of the present invention is to provide a device and method for preventing fiber webs from being flanged in a laying machine, so as to solve the problems raised in the above background technology.

In order to achieve the above objects, the present invention provides the following technical solutions:

A device to prevent fiber webs from being flanged on a laying machine, including:

A fixed plate, a support plate is fixedly installed on the fixed plate;

The air supply pipe is rotatably mounted on the support plate. The circumferential outer wall of the air supply pipe is provided with a plurality of equidistantly distributed No. 1 through slots. The support plate is provided with an angle adjustment component connected to the air supply pipe. , the angle adjustment component can adjust the angle of the No. 1 slot through the air supply pipe;

A transverse adjustment mechanism is provided on the support plate and connected to the angle adjustment component. The support plate is also provided with an air supply control mechanism connected to the transverse adjustment mechanism. The air supply control mechanism is connected to the air supply pipe. Connection, the angle adjustment component can drive the air supply control mechanism to move through the transverse adjustment mechanism to adjust the conduction amount of the No. 1 channel;

It is also characterized by:

A conduction control mechanism is provided on the support plate and connected to the air supply pipe. The conduction control mechanism can act when the air supply pipe rotates to adjust the conduction amount of the air supply pipe.

As a further solution of the present invention: the angle adjustment assembly includes a motor fixedly installed on the support plate. A transmission rod connected to the output shaft of the motor is rotatably installed on the support plate. The transmission rod is fixedly installed on the support plate. There is a small gear, and a large gear meshing with the small gear is fixedly installed on the air supply pipe, and the transmission rod is connected to the transverse adjustment mechanism.

As a further solution of the present invention: the lateral adjustment mechanism includes a rotating roller fixedly installed on the transmission rod, a guide groove is provided on the circumferential outer wall of the rotating roller, and a guide rod is fixedly installed on the support plate. The support plate is provided with a guide component connected to the guide rod and the guide groove, and the guide component is connected to the air supply control mechanism.

As a further solution of the present invention: the guide assembly includes a guide sleeve movably installed on the guide rod, a support rod matching the guide groove is fixed on the guide sleeve, and the inner wall of the guide sleeve A No. 1 limit slot is provided, a No. 1 limit rod engaged with the No. 1 limit slot is fixed on the guide rod, and the guide sleeve is connected to the air supply control mechanism.

As a further solution of the present invention: the air supply regulating mechanism includes a movable plate fixedly installed on the guide sleeve, a movable sleeve is movably installed on the air supply pipe, and the support plate is provided with a movable plate corresponding to the movable sleeve. The sleeve is connected to the limiting component of the air supply pipe, and the movable plate is movably connected to the movable sleeve.

As a further solution of the present invention: the limiting component includes a plurality of No. 2 through-slots located on the circumferential outer wall of the movable sleeve and distributed equidistantly, and the inner wall of the movable sleeve is provided with No. 2 limiting slots. A No. 2 limiting rod engaged with the No. 2 limiting groove is fixed on the air supply pipe.

As a further solution of the present invention: the conduction control mechanism includes a support plate fixedly installed on the support plate, and a sealing ring sleeved on the air supply pipe is fixed on one side of the support plate. A conduit connected to the support plate is fixed on the other side of the support plate, and a driven component connected to the support plate and the air supply pipe is provided on the support plate.

As a further solution of the present invention: the driven assembly includes a plurality of blocking plates movably installed in the support plate and distributed equidistantly around the circumference, and the side wall of the support plate is provided with a plurality of blocking plates equidistantly distributed around the circumference. A chute, the blocking plate is fixed with a protrusion penetrating the chute;

The driven assembly also includes a turntable fixedly installed on the air supply pipe. The side wall of the turntable is provided with a plurality of straight grooves distributed equidistantly around the circumference, and the straight grooves cooperate with the protrusions.

A method of using a device to prevent the fiber web of a web laying machine from flanging, including the following steps:

Step 1: Install the fixing plate on the mesh laying machine by bolts or welding, and make the opening of the No. 1 slot facing the bottom of the mesh laying machine;

Step 2: When it is necessary to prevent flanging during the working process of the net laying machine, at this time, under the action of the conduction control mechanism, the gas is transported to the air supply pipe, and the gas is blown on the net through the No. 1 slot. cloth side, thus providing a certain downward pressure on the mesh;

Step 3: If it is necessary to adjust the angle of gas discharge, in order to ensure that the downward pressure provided by the gas remains constant, the gas delivery volume needs to be adjusted synchronously. At this time, under the action of the angle adjustment component, the air supply pipe is rotated at a certain angle to change The air supply angle of No. 1 slot;

Step 4: At the same time, the angle adjustment component will also drive the movement of the lateral adjustment mechanism, thereby changing the conduction amount of the No. 1 channel through the air supply control mechanism, causing the rate of gas discharge from the No. 1 channel to change, thus ensuring the lower supply of the mesh. The pressure is kept within a certain range.

Compared with the existing technology, the beneficial effects of the present invention are: this application can press down the edge of the fiber web to ensure that the fiber web will not flange. Under the action of the conduction control mechanism, the air supply pipe can transport gas. And through the No. 1 channel and the air supply control mechanism, the gas is discharged to press down the fiber web. If the size of the fiber web changes, the gas delivery angle needs to be adjusted to ensure that the fiber web is pressed down. To keep the pressure constant, it is necessary to increase the gas delivery volume and air supply rate. At this time, under the action of the angle adjustment component, the angle of the air supply pipe changes, thereby changing the air supply angle of the No. 1 channel. At the same time, under the action of the lateral adjustment mechanism , drives the air supply control mechanism to move, causing the conduction amount of the No. 1 channel to change, thereby increasing the gas delivery rate. At the same time, the air supply pipe will also drive the conduction control mechanism to move, causing the conduction amount of the air supply pipe to change, thus increasing the gas delivery rate. The amount of gas delivered is to ensure that when the air supply distance increases, the gas rate is increased simultaneously to ensure that the downward pressure on the fiber web remains constant.

Description of the drawings

Figure 1 is a schematic structural diagram of an embodiment of a device for preventing fiber web flanging in a laying machine.

Figure 2 is a schematic structural diagram from another angle in an embodiment of a device for preventing fiber web flanging in a laying machine.

Figure 3 is an enlarged schematic diagram of the structure at point A in Figure 2.

Figure 4 is a schematic diagram of the connection relationship between the conduction control mechanism and some angle adjustment components in an embodiment of the device for preventing fiber web flanging of the web laying machine.

Figure 5 is a schematic structural diagram of an air supply pipe, a movable sleeve, a No. 1 slot, and a No. 2 slot in an embodiment of a device for preventing fiber web flanging in a laying machine.

Figure 6 is a schematic diagram of the exploded structure of the conduction control mechanism in an embodiment of a device for preventing fiber web flanging in a web laying machine.

Figure 7 is a schematic structural diagram of a transverse adjustment mechanism and a partial air supply control mechanism in an embodiment of a device for preventing fiber web flanging in a laying machine.

Figure 8 is a schematic diagram of the exploded structure of the transverse adjustment mechanism and part of the air supply control mechanism in one embodiment of the device for preventing fiber web flanging in the laying machine.

In the picture: 1. Fixed plate; 2. Support plate; 3. Motor; 4. Transmission rod; 5. Pinion; 6. Air supply pipe; 7. No. 1 slot; 8. Large gear; 9. Turntable; 10. Straight groove; 11. Support plate; 12. Sealing ring; 13. Conduit; 14. Blocking plate; 15. Chute; 16. Protrusion; 17. Movable sleeve; 18. No. 2 slot; 19. Rotating roller ; 20. Guide groove; 21. Guide rod; 22. Guide sleeve; 23. Support rod; 24. Movable plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In addition, in the present invention, an element is said to be "fixed to" or "disposed on" another element, which may be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Please refer to Figures 1 to 8. In an embodiment of the present invention, a device for preventing the fiber web of a laying machine from flanging includes:

Fixed plate 1, a support plate 2 is fixedly installed on the fixed plate 1;

Please refer to Figures 1 to 4. The air supply pipe 6 is rotatably installed on the support plate 2. The circumferential outer wall of the air supply pipe 6 is provided with a plurality of equidistantly distributed No. 1 through slots 7. The support plate 2 There is an angle adjustment component connected to the air supply pipe 6. The angle adjustment component can adjust the angle of the No. 1 through-slot 7 through the air supply pipe 6. The angle adjustment component includes a component fixedly installed on the support. The motor 3 on the plate 2 is rotatably mounted on the support plate 2 with a transmission rod 4 connected to the output shaft of the motor 3. A pinion 5 is fixedly installed on the transmission rod 4 and the air supply pipe 6 is fixedly installed on it. There is a large gear 8 meshing with the small gear 5, and the transmission rod 4 is connected with the transverse adjustment mechanism.

Specifically, in the textile industry, a net laying machine is a device that lays fiber raw materials on the net curtain according to certain rules. During the laying process, due to the looseness and unevenness of the fiber raw materials, the fiber web is prone to flanging. Therefore, the fiber web needs to be anti-flanging. The air supply pipe 6 is used to transport gas and passes through the No. 1 Groove 7 delivers gas to the fiber web, and under the action of the gas, the fiber web is pressed to prevent the fiber web from flanging. Due to the different sizes of the fiber web, the angle of the air supply pipe 6 needs to be adjusted. At this time, the motor 3 works , driving the transmission rod 4 to rotate, thereby driving the pinion 5 to rotate. Since the pinion 5 and the large gear 8 mesh with each other, the large gear 8 rotates, thereby driving the air supply pipe 6 to rotate at a certain angle. At this time, the air supply angle of the No. 1 through slot 7 will be changed to adjust the air supply angle according to the size of the fiber web to ensure that the fiber web will not flange.

Please refer to Figures 1, 2, 7, and 8. A transverse adjustment mechanism is provided on the support plate 2 and connected to the angle adjustment component. The transverse adjustment mechanism includes a structure fixedly installed on the transmission rod 4. The rotating roller 19 has a guide groove 20 on the circumferential outer wall of the rotating roller 19. A guide rod 21 is fixedly installed on the support plate 2. The support plate 2 is provided with a guide rod 21 and the guide rod 21. The guide assembly is connected to the guide groove 20. The guide assembly is connected to the air supply control mechanism. The guide assembly includes a guide sleeve 22 movably installed on the guide rod 21. The guide sleeve 22 is fixed on the guide rod 21. There is a support rod 23 that cooperates with the guide groove 20. The inner wall of the guide sleeve 22 is provided with a No. 1 limit groove. The guide rod 21 is fixed with a No. 1 limit device that engages with the No. 1 limit groove. Rod, the guide sleeve 22 is connected with the air supply control mechanism.

It should be noted that the guide groove 20 is arranged in a spiral shape. In the initial state, the support rod 23 is located at the end of the stroke on one side of the guide groove 20. If the air supply angle of the No. 1 through slot 7 changes, the air supply distance will increase, resulting in The downward pressure on the fiber web becomes smaller. In order to ensure that the fiber web does not flange, it is necessary to increase the air supply rate of the No. 1 slot 7 to keep the down force provided by the fiber web within a certain range. At this time, when the transmission rod 4 rotates , the air supply angle of No. 1 slot 7 changes, the transmission rod 4 will also drive the rotating roller 19 to rotate, thereby driving the guide groove 20 to move. Since the guide groove 20 cooperates with the support rod 23, the support rod 23 moves, thereby driving the guide sleeve 22 movement, because the No. 1 limit rod is engaged with the No. 1 limit groove, the guide sleeve 22 moves along the length direction of the guide rod 21. The guide sleeve 22 will also drive the air supply control mechanism to move. When the air supply control mechanism Under the action, the conduction amount of the No. 1 slot 7 is reduced. Since the air supply volume of the air supply pipe 6 will not change, the rate of gas discharged through the No. 1 slot 7 increases, thereby ensuring that when the air supply distance increases, the The downforce provided to the fiber web is maintained within a certain range.

Please refer to Figures 1, 2, 4, 5, 7, and 8. The support plate 2 is also provided with an air supply control mechanism connected to the lateral adjustment mechanism. The air supply control mechanism is connected to the air supply control mechanism. The air pipe 6 is connected, and the angle adjustment component can drive the air supply control mechanism to move through the transverse adjustment mechanism to adjust the conduction amount of the No. 1 channel 7. The air supply control mechanism includes a component fixedly installed on the guide. The movable plate 24 on the sleeve 22, the movable sleeve 17 is movably installed on the air supply pipe 6, and the support plate 2 is provided with a limiting component connected to the movable sleeve 17 and the air supply pipe 6, The movable plate 24 is movably connected to the movable sleeve 17, wherein the limiting component includes a plurality of No. 2 through slots 18 that are opened on the circumferential outer wall of the movable sleeve 17 and are equidistantly distributed. The inner wall of the sleeve 17 is provided with a No. 2 limit groove, and the air supply pipe 6 is fixed with a No. 2 limit rod that engages with the No. 2 limit groove.

Furthermore, if the angle of the No. 1 slot 7 changes, the air supply rate needs to be adjusted. When the air supply pipe 6 rotates, the No. 2 limit slot and the No. 2 limit rod engage, causing the movable sleeve 17 to rotate synchronously. At the same time, when the guide sleeve 22 moves, it drives the movable plate 24 to move, thereby driving the movable sleeve 17 to move. The movable sleeve 17 will also drive the No. 2 through slot 18 to move, so that the No. 2 through slot 18 and the No. 1 through slot 7 The conduction amount of the air supply pipe 6 decreases. Therefore, when the air supply amount of the air supply pipe 6 remains unchanged, due to the decrease of the conduction amount of the No. 1 channel 7, the air pressure in the air supply pipe 6 changes, thereby controlling the gas to pass through the No. 1 channel 7 The rate of discharge is increased to ensure that the downforce on the web remains constant.

Also includes:

Please refer to Figures 1 to 4 and 6. The conduction control mechanism is provided on the support plate 2 and connected to the air supply pipe 6. The conduction control mechanism can operate when the air supply pipe 6 rotates. To adjust the conduction amount of the air supply pipe 6, the conduction control mechanism includes a support plate 11 fixedly installed on the support plate 2, and one side of the support plate 11 is fixedly sleeved on the air supply pipe. 6 on the sealing ring 12, the other side of the support plate 11 is fixed with a conduit 13 connected to the support plate 11, the support plate 2 is provided with the support plate 11 and the air supply pipe 6 A connected driven assembly, wherein the driven assembly includes a plurality of blocking plates 14 movably installed in the support plate 11 and distributed equidistantly around the circumference, and the side walls of the support plate 11 are provided with equidistantly spaced There are a plurality of distributed chute 15, and the blocking plate 14 is fixed with a protrusion 16 that penetrates the chute 15; the driven assembly also includes a turntable 9 fixedly installed on the air supply pipe 6. The side wall of the turntable 9 is provided with a plurality of straight grooves 10 distributed equidistantly around the circumference, and the straight grooves 10 cooperate with the protrusions 16 .

Furthermore, the chute 15 is arranged in an inclined shape, and the two ends of the chute 15 are at the same distance from the center point of the support plate 11. In the initial state, the air supply distance of the No. 1 channel 7 and the distance between the fiber webs are the smallest. , under the action of the straight groove 10, the protrusion 16 is located in the middle of the inclined groove 15, so that the blocking plates 14 are combined to form a square shape. At this time, the gap left between the blocking plates 14 is minimal, so that the air supply pipe 6 has the smallest conduction amount. If the air supply angle of No. 1 slot 7 needs to be adjusted, the air supply distance of No. 1 slot 7 will increase. In order to ensure that the downward pressure on the fiber web remains constant, the air supply volume needs to be increased. At this time , when the air supply pipe 6 rotates, it drives the turntable 9 to rotate, thereby driving the straight groove 10 to move. Since the straight groove 10 cooperates with the protrusion 16, it drives the protrusion 16 to move, and the protrusion 16 will move along the length direction of the chute 15. , thereby driving the movement of the blocking plates 14, and the gaps formed between the blocking plates 14 will continue to increase, causing the conduction volume of the air supply pipe 6 to increase, causing the gas transportation volume in the air supply pipe 6 to increase, thereby ensuring that the No. 1 passage The rate of gas discharged from slot 7 increases to ensure that the downward pressure on the fiber web remains constant when the air supply distance increases.

A method of using a device to prevent the fiber web of a web laying machine from flanging, including the following steps:

Step 1: Install the fixing plate 1 on the mesh laying machine by bolts or welding, and make the opening of the No. 1 slot 7 facing the bottom of the mesh laying machine;

Step 2: When it is necessary to prevent flanging during the working process of the net laying machine, at this time, under the action of the conduction control mechanism, the gas is transported to the air supply pipe 6, and the gas is blown through the No. 1 channel 7 On the side of the mesh, thereby providing a certain downward force on the mesh;

Step 3: If the angle of gas discharge needs to be adjusted, in order to ensure that the downward pressure provided by the gas remains constant, the gas delivery volume needs to be adjusted synchronously. At this time, under the action of the angle adjustment component, the air supply pipe 6 is rotated at a certain angle to Change the air supply angle of No. 1 slot 7;

Step 4: At the same time, the angle adjustment component will also drive the movement of the lateral adjustment mechanism, thereby changing the conduction amount of the No. 1 channel 7 through the air supply control mechanism, so that the rate at which the gas is discharged from the No. 1 channel 7 changes, thereby ensuring that the mesh is provided with The downforce is maintained within a certain range.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the claims All changes within the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims shall not be construed as limiting the claim in question.

In addition, it should be understood that although this specification is described in terms of implementations, not each implementation only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. An apparatus for preventing a web of a lapping machine from flanging, comprising:

the fixing plate (1), the supporting plate (2) is fixedly arranged on the fixing plate (1);

the air supply pipe (6) is rotatably arranged on the supporting plate (2), a plurality of first through grooves (7) which are equidistantly distributed are formed in the circumferential outer wall of the air supply pipe (6), an angle adjusting component connected with the air supply pipe (6) is arranged on the supporting plate (2), and the angle of the first through grooves (7) can be adjusted through the air supply pipe (6);

the transverse adjusting mechanism is arranged on the supporting plate (2) and is connected with the angle adjusting assembly, the supporting plate (2) is also provided with an air supply adjusting mechanism connected with the transverse adjusting mechanism, the air supply adjusting mechanism is connected with the air supply pipe (6), and the angle adjusting assembly can drive the air supply adjusting mechanism to move through the transverse adjusting mechanism so as to adjust the conduction quantity of the first through groove (7);

characterized by further comprising:

and the conduction regulating mechanism is arranged on the supporting plate (2) and connected with the air supply pipe (6), and can act when the air supply pipe (6) rotates so as to regulate the conduction amount of the air supply pipe (6).

2. A device for preventing flanging of a web of a lapping machine according to claim 1, wherein the angle adjusting assembly comprises a motor (3) fixedly mounted on the supporting plate (2), a transmission rod (4) connected with an output shaft of the motor (3) is rotatably mounted on the supporting plate (2), a pinion (5) is fixedly mounted on the transmission rod (4), a large gear (8) meshed with the pinion (5) is fixedly mounted on the air supply pipe (6), and the transmission rod (4) is connected with the transverse adjusting mechanism.

3. The device for preventing flanging of a fiber web of a lapping machine according to claim 2, wherein the transverse adjusting mechanism comprises a rotating roller (19) fixedly installed on the transmission rod (4), a guide groove (20) is formed in the circumferential outer wall of the rotating roller (19), a guide rod (21) is fixedly installed on the support plate (2), a guide assembly connected with the guide rod (21) and the guide groove (20) is arranged on the support plate (2), and the guide assembly is connected with the air supply adjusting mechanism.

4. A device for preventing flanging of a fiber web of a lapping machine according to claim 3, wherein the guiding assembly comprises a guiding sleeve (22) movably mounted on the guiding rod (21), a supporting rod (23) matched with the guiding groove (20) is fixed on the guiding sleeve (22), a first limiting groove is formed in the inner wall of the guiding sleeve (22), a first limiting rod clamped with the first limiting groove is fixed on the guiding rod (21), and the guiding sleeve (22) is connected with the air supply regulating mechanism.

5. The device for preventing flanging of a web of a lapping machine according to claim 4, wherein the air supply regulating mechanism comprises a movable plate (24) fixedly installed on the guide sleeve (22), the air supply pipe (6) is movably provided with a movable sleeve (17), the support plate (2) is provided with a limiting component connected with the movable sleeve (17) and the air supply pipe (6), and the movable plate (24) is movably connected with the movable sleeve (17).

6. The device for preventing flanging of a fiber net of a lapping machine according to claim 5, wherein the limiting assembly comprises a plurality of second through grooves (18) which are formed in the circumferential outer wall of the movable sleeve (17) and are distributed at equal intervals, the inner wall of the movable sleeve (17) is provided with second limiting grooves, and the air supply pipe (6) is fixedly provided with second limiting rods which are clamped with the second limiting grooves.

7. The device for preventing flanging of a fiber web of a lapping machine according to claim 1, wherein the conduction regulating mechanism comprises a supporting disc (11) fixedly installed on the supporting plate (2), a sealing ring (12) sleeved on the air supply pipe (6) is fixed on one side of the supporting disc (11), a conduit (13) communicated with the supporting disc (11) is fixed on the other side of the supporting disc (11), and a driven component connected with the supporting disc (11) and the air supply pipe (6) is arranged on the supporting plate (2).

8. The device for preventing the flanging of a fiber web of a lapping machine according to claim 7, wherein the driven assembly comprises a plurality of plugging plates (14) which are movably arranged in the supporting disc (11) and are circumferentially and equidistantly distributed, a plurality of chute (15) which are circumferentially and equidistantly distributed are arranged on the side wall of the supporting disc (11), and a protrusion (16) penetrating through the chute (15) is fixed on the plugging plates (14);

the driven assembly further comprises a rotary table (9) fixedly installed on the air supply pipe (6), a plurality of straight grooves (10) distributed at equal intervals in the circumference are formed in the side wall of the rotary table (9), and the straight grooves (10) are matched with the protrusions (16).

9. A method of using the apparatus for preventing a turn-up of a web of a lapping machine as claimed in any one of claims 1 to 8, comprising the steps of:

step one: the fixing plate (1) is arranged on the lapping machine in a bolt or welding mode, and the opening of the first through groove (7) faces to the lower part of the lapping machine;

step two: when flanging prevention treatment is needed in the working process of the lapping machine, at the moment, under the action of the conduction regulating mechanism, gas is conveyed into the air supply pipe (6) and is blown to the side edge of the mesh cloth through the first through groove (7), so that certain downward pressure is provided for the mesh cloth;

step three: if the angle of gas discharge needs to be regulated, in order to ensure that the downward pressure provided by the gas is kept constant, the gas conveying amount needs to be synchronously regulated, and at the moment, the gas supply pipe (6) is rotated by a certain angle under the action of the angle regulating assembly so as to change the gas supply angle of the first through groove (7);

step four: meanwhile, the angle adjusting assembly can drive the transverse adjusting mechanism to move, so that the conduction quantity of the first through groove (7) is changed through the air supply adjusting mechanism, the speed of air discharged out of the first through groove (7) is changed, and the downward pressure provided for the mesh cloth is kept within a certain range.