CN218909216U

CN218909216U - PE winding film control unreeling device

Info

Publication number: CN218909216U
Application number: CN202221514405.3U
Authority: CN
Inventors: 李百源; 柯达浩; 陆俞明
Original assignee: Maoming Liansu Building Materials Co ltd
Current assignee: Maoming Liansu Building Materials Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-04-25
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to a PE wound film control unreeling device which comprises a rack and an unreeling roller assembly, wherein the unreeling roller assembly comprises an unreeling roller and a speed regulating component, and the speed regulating component comprises a fixed rod, a first gear, a second gear, an elastic piece and a compression piece. The utility model provides a dead lever and frame fixed connection, first gear and compression spare all are located the dead lever, and first gear and dead lever rotate to be connected, compression spare and dead lever sliding connection, the dead lever pass the elastic component, and the elastic component is located between first gear and the compression spare, and the one end and the frame butt of elastic component, the other end butt compression spare, second gear are located on the unreeling roller and second gear and unreeling roller fixed connection, second gear and first gear engagement. The device adopts a mechanical transmission mode to adjust the rotating speed of the unreeling roller by adjusting the friction force received by the gear set connected with the unreeling roller, so as to control the tension of the PE winding film on the unreeling device, and has simple control mode and stable control effect.

Description

PE winding film control unreeling device

Technical Field

The utility model relates to the technical field of PE winding film production equipment, in particular to a PE winding film control unreeling device.

Background

The PE winding film is also called a stretching film or a thermal shrinkage film, PVC is taken as a base material at the earliest in China, DOA is taken as a plasticizer and has self-adhesive effect to produce the PVC winding film, but the PE winding film is gradually eliminated when the PE stretching film is produced in 1994-1995 because of environmental pollution, overhigh cost, poor stretchability and the like, and the PE winding film replaces the PVC winding film to enter the market. The PE wrapping film is a thin and soft transparent sheet made of plastic, adhesive, rubber or other materials. The thickness of the PE winding film material is between single atom and a few millimeters, and the PE winding film material is widely applied to industries such as electronics, machinery, printing and the like, and along with the continuous expansion of application requirements of sealing plastic products such as plastic sealing bags, processing devices required to be used in the use process of a production line of the PE winding film product are rapidly developed. The PE winding film is required to be used in a plurality of processing devices in the use process of the production line, and the unreeling device of the PE winding film is one of the processing devices of the production line. The existing film unreeling device with adjustable tension comprises: base, mount pad, main pivot, unreeling roller, regulation pole, friction block and cylinder. The middle part of adjusting the pole is connected with the top pivot of mount pad, and the friction disc setting is in the one end of adjusting the pole and is used for the global friction with adjusting the disc, and the other end of adjusting the pole is articulated with the one end of cylinder, and cylinder drive friction disc butt unreels the roller, adjusts unreels roller speed through the rotatory frictional force of adjustment unreels roller, and then adjusts film tension. However, the device adopts the air cylinder as the power of the device for adjusting the film tension, the stroke of the air cylinder cannot be controlled when the air cylinder works, the advancing amount of the air cylinder is difficult to adjust, and the friction force applied to the unreeling roller is difficult to control. The shape of the friction block can be changed due to the friction between the friction block and the unreeling roller, so that the resistance between the friction block and the unreeling roller is reduced along with the abrasion of the friction block under the same pressure.

Disclosure of Invention

The utility model aims to solve the problem that the advancing amount of the air cylinder is difficult to control, so that the friction force applied to the unreeling roller is difficult to control in the prior art. The PE winding film control unreeling device is simple in control mode and stable in control effect, and the rotating speed of the unreeling roller is adjusted by adjusting the friction force received by a gear set connected with the unreeling roller in a mechanical transmission mode, so that the tension of the PE winding film on the unreeling device is controlled.

In order to solve the technical problems, the utility model adopts the following technical scheme: the PE winding film control unreeling device comprises a frame and an unreeling roller assembly, wherein the unreeling roller assembly comprises an unreeling roller and a speed regulating component, and the speed regulating component comprises a fixed rod, a first gear, a second gear, an elastic piece and a compression piece. The utility model provides a dead lever and frame fixed connection, first gear is located the dead lever and first gear and dead lever rotation is connected, first gear and frame butt, compression piece is located the dead lever and compression piece and dead lever threaded connection, the dead lever passes the elastic component, the elastic component is located between first gear and the compression piece, the one end and the first gear butt of elastic component, the other end and compression piece butt, the second gear is located on the unreeling roller and second gear and unreeling roller fixed connection, second gear and first gear engagement.

The second gear is fixedly connected with the unreeling roller, the unreeling roller rotates to drive the second gear to rotate, the second gear is meshed with the first gear, and the second gear rotates to drive the first gear to rotate. When increasing PE winding membrane tension, adjust the compression piece position and increase the deformation volume of elastic component, after the elastic component deformation volume increased, the elastic component pressure to first gear became big, and first gear rotational speed slows down and makes the resistance that receives with first gear engagement's second gear grow, and second gear rotational speed slows down, and then leads to unreeling roller rotational speed to slow, PE winding membrane reel unwinding speed slows down, PE winding membrane tension grow. When reducing PE winding membrane tension, adjust the compression piece position and reduce the deformation volume of elastic component, after the elastic component deformation volume reduces, the elastic component diminishes to the pressure of first gear, and first gear rotational speed is fast, and first gear rotational speed makes the resistance that receives with first gear engagement's second gear diminish, and second gear rotational speed is fast, and then leads to unreeling roller rotational speed to become fast, accelerates PE winding membrane package membrane and unreels membrane speed, and PE winding membrane tension diminishes.

Preferably, the fixed rod is provided with a speed regulation fixed plate and a brake block, the brake block is positioned between the first gear and the elastic piece, the brake block is fixedly connected with the elastic piece, the brake block is abutted with the first gear, the speed regulation fixed plate is fixedly connected with the fixed rod, the speed regulation fixed plate is abutted with the first gear, and the speed regulation fixed plate and the brake piece are respectively positioned at two ends of the first gear. The friction coefficient of the brake block is larger than that of the frame, and under the same pressure, the friction force between the brake block and the first gear is larger than that between the frame and the first gear, so that the blocking effect on the rotation of the first gear is better. The first gear is abutted with the speed regulation fixed plate, the limit of the first gear on the fixed rod is increased, the first gear is prevented from being directly abutted with the frame, and the frame is worn after the first gear rotates. The speed regulation fixed plate can be made of the same material as the brake pad, so that friction resistance is applied to two end faces of the first gear when the first gear rotates, and the blocking effect on the movement of the first gear is better.

Preferably, the device is further provided with a protective cover, the protective cover is fixedly connected with the frame, the first gear, the second gear and the brake pad are both positioned in the inner cavity of the protective cover, and the compression piece is provided with a hand wheel. The hand wheel pair is more convenient to rotate the compression piece to adjust the position of the compression piece on the fixed rod, and then the deformation quantity of the elastic piece is controlled. The protective cover can cover the first gear and other parts to prevent external sundries from entering the gap, so that the device is damaged.

Preferably, the frame is provided with a follow-up bearing group, one follow-up bearing group comprises two follow-up bearings, the follow-up bearings are fixedly connected with the frame, the axes of the two follow-up bearings in one follow-up bearing group are parallel, the gap between the two follow-up bearings is smaller than the diameter of the unreeling roller, two ends of the unreeling roller are respectively abutted with the follow-up bearing group on the frame, and the axes of the unreeling roller are parallel to the axes of the follow-up bearings. The unreeling roller is provided with a clamping groove which is matched with the follow-up bearing, so that the unreeling roller is prevented from sliding on the follow-up bearing group. The rotation of the unreeling roller drives the rotation of the follow-up bearing, the friction force between the unreeling roller and the follow-up bearing is smaller, the unreeling roller is driven to rotate when the PE winding film is pulled more conveniently, the unreeling roller is located on the follow-up bearing, and the unreeling roller is convenient to replace when the PE winding film on the unreeling roller is used up.

Preferably, two unreeling roller assemblies which are arranged in parallel are arranged on the stand, the follow-up bearing groups are used for bearing the two unreeling roller assemblies, and the whole stand is composed of a plurality of supporting rods. The frame is designed as duplex position, can bear two unreeling rollers simultaneously, when the just about consumption of a preceding winding film roll, can be immediately with the winding film roll fracture that another station had ready and with just about to consume the winding film material roll fracture of finishing be connected, shorten the reloading time, improve work efficiency. The whole frame that comprises a plurality of backing roll, when the dolly transported PE winding membrane and rolls up, the dolly can get into the frame inside and transport PE winding membrane and roll up to station department, need not workman's transport PE winding membrane and roll up, reduces workman's intensity of labour.

Preferably, the unreeling roller is provided with a compression wheel, and the compression wheel is connected with the unreeling roller. The PE winding film roll on the pinch roller butt unreels the roller, prevents that PE winding film roll on the unreeling roller from sliding on the unreeling roller, further improves PE winding film roll's stability on the unreeling roller, optimizes the unreeling effect of device.

Preferably, the device is further provided with a material shortage reminding mechanism, the material shortage reminding mechanism comprises a sensor and an alarm device, the sensor and the alarm device are respectively connected with the frame, the sensor is electrically connected with the alarm device, and the alarm device is an alarm lamp. The sensor comprises an infrared generator and an infrared receiver, wherein the infrared generator and the infrared receiver are respectively positioned at two ends of the unreeling roller, and the positions of the infrared generator and the infrared receiver are opposite to each other, so that the infrared receiver can receive rays emitted by the infrared generator. The winding film roll on the unreeling roller can play a role in blocking rays emitted by the infrared generator and preventing the infrared receiver from being irradiated by the infrared generator. When the winding film roll on the unreeling roller is consumed to the point that rays emitted by the infrared generator cannot be prevented, the infrared receiver can receive the rays emitted by the infrared generator, a warning lamp electrically connected with the sensor starts to flash at the moment, a worker is reminded that the PE winding film roll on the unreeling roller is about to run out, the winding film is connected in time, the unreeling roller is replaced, the machine is prevented from continuously working after the film roll is consumed, the material roll is prevented from being wound into the machine depth, workers are required to puncture the material roll film into the machine again, the machine is debugged again, the downtime of the whole equipment is increased, and the production efficiency is reduced.

Preferably, the sensor is connected to the frame via a sensor mount. The sensor fixing frame is fixedly connected with the frame, the sensor fixing frame is provided with a groove, the sensor is positioned in the groove on the sensor fixing frame, and the sensor can slide along the radial direction of the unreeling roller in the groove on the sensor fixing frame. The sensor can adjust the position in the recess of sensor mount for the sensor can be directed against the distance between unreeling roller shaft line and the unreeling roller adjustment warning line of different models.

Compared with the prior art, the utility model has the beneficial effects that: the mechanical transmission mode is adopted to adjust the rotating speed of the unreeling roller by adjusting the friction force received by the first gear, the tension of the PE winding film on the unreeling device is controlled, the control mode is simple, and the control effect is stable. The whole frame comprises the backing roll, and the dolly can get into the frame inside when transporting PE winding membrane book and directly place PE winding membrane book in station department. The unreeling roller is located on the follow-up bearing group on the frame, and the friction force of unreeling roller and frame is less, and the unreeling roller of being convenient for rotates, unreels roller and follow-up bearing group butt, the unreeling roller of being convenient for change and use up. The frame designs to duplex position, still is provided with the unfilled material and reminds the mechanism, when the PE wound film on the previous unreeling roller is about to consume to finish, can be timely with PE wound film material roll fracture on the another station with will consume to finish PE wound film material roll fracture and be connected, reduced the downtime of whole equipment, improved production efficiency.

Drawings

Fig. 1 is a schematic structural view of a PE wound film control unreeling device of the present utility model.

Fig. 2 is a schematic view of the structure of the governor assembly of the present utility model.

Fig. 3 is a schematic view of the connection of the follower bearing of the present utility model to the unwind roller.

FIG. 4 is a schematic view of the structure of the sensor holder of the present utility model.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

example 1

Fig. 1-2 show an embodiment of a PE wound film control unreeling device, which comprises a frame 1 and an unreeling roller assembly, wherein the unreeling roller assembly comprises an unreeling roller 2 and a speed regulating assembly, and the speed regulating assembly comprises a fixed rod 3, a first gear 4, a second gear 5, an elastic piece 7 and a compression piece 8. Dead lever 3 and frame 1 fixed connection, first gear 4 is located dead lever 3 and first gear 4 and dead lever 3 rotation are connected, first gear 4 and frame 1 butt, compression piece 8 are located dead lever 3 and compression piece 8 and dead lever 3 threaded connection, dead lever 3 passes elastic component 7, elastic component 7 is located between first gear 4 and compression piece 8, elastic component 7's one end and first gear 4 butt, the other end and compression piece 8 butt, compression piece 8 and dead lever 3 threaded connection. The second gear 5 is located on the unreeling roller 2, the second gear 5 is fixedly connected with the unreeling roller 2, and the second gear 5 is meshed with the first gear 4.

The working principle or working process of the embodiment: the second gear 5 is fixedly connected with the unreeling roller 2, the unreeling roller 2 rotates to drive the second gear 5 to rotate, the second gear 5 is meshed with the first gear 4, and the second gear 5 rotates to drive the first gear 4 to rotate. When increasing PE winding membrane tension, adjust compression 8 position and increase the deformation volume of elastic component 7, after the deformation volume of elastic component 7 increases, elastic component 7 pressure to first gear 4 grow, the frictional force between frame 1 and first gear 4 grow, first gear 4 rotational speed slows down, first gear 4 rotates and slows down and makes the resistance that receives with the second gear 5 of first gear 4 meshing grow, second gear 5 rotational speed slows down, and then lead to unreeling roller 2 rotational speed to slow down, PE winding membrane rolls up and unreels the membrane speed and slows down, PE winding membrane tension grow. When reducing PE winding membrane tension, adjust compression 8 position and reduce the deformation volume of elastic component 7, after the deformation volume of elastic component 7 reduces, the pressure of elastic component 7 to first gear 4 diminishes, the frictional force between frame 1 and first gear 4 diminishes, first gear 4 rotational speed is fast, first gear 4 rotates fast and makes the resistance that receives with the second gear 5 of first gear 4 meshing diminish, second gear 5 rotational speed is fast, and then lead to unreeling roller 2 rotational speed to become fast, accelerate PE winding membrane roll up membrane and unreel the membrane speed, PE winding membrane tension diminishes.

The beneficial effects of this embodiment are: the mechanical transmission mode is adopted to adjust the rotating speed of the unreeling roller 2 by adjusting the friction force received by the first gear 4, so that the tension condition of the PE winding film on the unreeling device is controlled, the control mode is simple, and the control effect is stable.

Example 2

Example 2 of a PE wound film control unwind apparatus, further defined in terms of speed adjusting assembly structure on the basis of example 1, as shown in FIGS. 1-2.

Specifically, the fixed rod 3 is provided with a speed regulation fixed plate 301 and a brake pad 6, the brake pad 6 is located between the first gear 4 and the elastic piece 7, the brake pad 6 is fixedly connected with the elastic piece 7, and the brake pad 6 is abutted with the first gear 4. The speed regulation fixing plate 301 is fixedly connected with the fixing rod 3, the speed regulation fixing plate 301 is abutted with the first gear 4, and the speed regulation fixing plate 301 and the brake piece are respectively positioned at two ends of the first gear 4. The compression member 8 is provided with a hand wheel 801. The device is also provided with a protective cover 9, the protective cover 9 is fixedly connected with the frame 1, and the first gear 4, the second gear 5 and the brake pad 6 are all positioned in the inner cavity of the protective cover 9.

The beneficial effects of this embodiment are: the friction coefficient of the brake pad 6 is larger than that of the frame 1, and under the same pressure, the friction force between the brake pad 6 and the first gear 4 is larger than that between the frame 1 and the first gear 4, so that the blocking effect on the rotation of the first gear 4 is better. The first gear 4 is abutted with the speed regulation fixed plate 301, the limit of the first gear 4 on the fixed rod 3 is increased, the first gear 4 is prevented from being directly abutted with the frame 1, and the frame 1 is worn after the first gear 4 rotates. The hand wheel 801 is more convenient to rotate the compressing member 8 to adjust the position of the compressing member 8 on the fixed rod 3, so as to control the deformation amount of the elastic member 7. The protective cover 9 can cover the first gear 4 and other parts, and prevent foreign matters from entering the gap, so that the device is damaged.

Example 3

An embodiment of a PE winding film control unreeling device is based on the embodiment 1 and the embodiment 2, and as shown in fig. 1-3, the connection mode of the unreeling roller 2 on the rack 1 is further limited.

Specifically, a follow-up bearing group is arranged on the stand 1, one follow-up bearing group comprises two follow-up bearings 10, the follow-up bearings 10 are fixedly connected with the stand 1, the axes of the two follow-up bearings 10 in one follow-up bearing group are parallel, the gap between the two follow-up bearings 10 is smaller than the diameter of the unreeling roller 2, two ends of the unreeling roller 2 are respectively abutted with the follow-up bearing 10 group on the stand 1, and the axis of the unreeling roller 2 is parallel to the axis of the follow-up bearings 10. The unreeling roller 2 is provided with a clamping groove 201, and the clamping groove 201 is matched with the follow-up bearing 10. Two unreeling roller assemblies placed in parallel and a follow-up bearing group used for bearing the two unreeling roller assemblies are arranged on the frame 1. The frame 1 is formed by a plurality of support rods 101. The unreeling roller 2 is provided with a pressing wheel 202, the pressing wheel 202 is in sliding connection with the unreeling roller 2, and the pressing wheel 202 is abutted to the PE winding film roll.

The beneficial effects of this embodiment are: the rotation of the unreeling roller 2 drives the rotation of the follow-up bearing 10, the friction force between the unreeling roller 2 and the follow-up bearing group is smaller, the unreeling roller 2 is driven to rotate when the PE winding film is pulled more conveniently, the unreeling roller 2 is positioned on the follow-up bearing group, and the unreeling roller 2 is convenient to replace when the PE winding film on the unreeling roller 2 is used up. The unreeling roller 2 is provided with a clamping groove 201, so that the unreeling roller 2 is prevented from sliding on the follow-up bearing set. The frame 1 is designed as a double-station, can bear two unreeling rollers 2 simultaneously, and can immediately connect the winding film which is ready on another station when the previous winding film is about to be consumed, so that the material changing time is shortened, and the working efficiency is improved. The frame 1 wholly comprises a plurality of supporting rods 101, and when the dolly transported PE winding membrane roll, the dolly can get into the frame 1 inside and transport PE winding membrane roll to station department, need not workman's transport PE winding membrane roll, reduces workman's intensity of labour. The setting of the compression wheel 202 can prevent the PE wound film roll on the unreeling roller 2 from sliding on the unreeling roller 2, further improve the stability of the PE wound film roll on the unreeling roller 2, and optimize the unreeling effect of the device.

Example 4

An embodiment of a PE wound film control unreeling device is further defined by a material shortage reminding mechanism of the device on the basis of embodiments 1-3 as shown in figures 1-4.

Specifically, the device is further provided with a material shortage reminding mechanism, the material shortage reminding mechanism comprises a sensor 11 and an alarm device, the sensor 11 and the alarm device are respectively connected with the frame 1, the sensor 11 is electrically connected with the alarm device, and the alarm device is an alarm lamp 12. The sensor 11 comprises an infrared generator and an infrared receiver, the infrared generator and the infrared receiver are respectively positioned at two ends of the unreeling roller 2, and the positions of the infrared generator and the infrared receiver are opposite, so that the infrared receiver can receive rays emitted by the infrared generator. The PE wound film roll prevents the radiation emitted by the infrared generator from being received by the infrared receiver, and when the PE wound film roll on the unwind roller 2 is consumed until the infrared receiver can receive the radiation, the warning light 12 electrically connected to the sensor 11 starts to flash. The sensor 11 is connected to the frame 1 via a sensor holder 13. The sensor fixing frame 13 is fixedly connected with the frame 1, the sensor fixing frame 13 is provided with a groove 131, the sensor 11 is positioned in the groove 131 on the sensor fixing frame 13, and the sensor 11 can slide in the groove 131 on the sensor fixing frame 13 along the radial direction of the unreeling roller 2.

The beneficial effects of this embodiment are: the setting sensor 11 can remind the staff when the PE winding film roll on the unreeling roller 2 is about to be used up, and timely connect winding film and change the unreeling roller 2, prevent to continue to work when the film roll finishes after the consumption and lead to the film roll to roll into the machine depths, need the workman to puncture the film roll film into the machine again and debug the machine again, can reduce machine downtime, improve work efficiency. The sensor 11 can be positioned in the groove 131 of the sensor holder 13 such that the sensor 11 can adjust the distance between the warning line and the axis of the unwind roller 2 for different types of unwind rollers 2.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary or exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model as set forth in the claims.

Claims

1. The PE winding film control unreeling device comprises a rack (1) and an unreeling roller assembly, wherein the unreeling roller assembly comprises an unreeling roller (2) and a speed regulating component, and is characterized in that the speed regulating component comprises a fixed rod (3), a first gear (4), a second gear (5), an elastic piece (7) and a compression piece (8); the utility model provides a roll unreeling device, including frame (1), dead lever (3) with frame (1) fixed connection, first gear (4) are located on dead lever (3), first gear (4) with dead lever (3) rotate to be connected, first gear (4) with frame (1) butt, compression piece (8) are located on dead lever (3) just compression piece (8) with dead lever (3) threaded connection, dead lever (3) pass elastic component (7), elastic component (7) are located first gear (4) with compression piece (8) between, the one end of elastic component (7) with first gear (4) butt, the other end with compression piece (8) butt, second gear (5) are located unreeling roller (2) are last and second gear (5) with unreeling roller (2) fixed connection, second gear (5) with first gear (4) meshing.

2. The PE winding film control unreeling device according to claim 1, wherein a speed regulation fixing plate (301) and a brake block (6) are arranged on the fixing rod (3), the brake block (6) is located between the first gear (4) and the elastic piece (7), the brake block (6) is fixedly connected with the elastic piece (7), the brake block (6) is abutted to the first gear (4), the speed regulation fixing plate (301) is fixedly connected with the fixing rod (3), the speed regulation fixing plate (301) is abutted to the first gear (4) and the speed regulation fixing plate (301) and the brake block (6) are respectively located at two ends of the first gear (4).

3. A PE wound film controlled unwinding device according to claim 2, further comprising a protective cover (9), wherein the protective cover (9) is fixedly connected with the frame (1), and the first gear (4), the second gear (5) and the brake pad (6) are all located in an inner cavity of the protective cover (9).

4. A PE wound film control unreeling device according to claim 1, characterized in that the compressing member (8) is provided with a hand wheel (801).

5. A PE wound film controlled unwinding device according to claim 1, characterized in that the two sides of the frame (1) are provided with follower bearing groups, the follower bearing groups comprise two follower bearings (10), the follower bearings (10) are fixedly connected with the frame (1), the axes of the two follower bearings (10) in the follower bearing groups are parallel, the gap between the two follower bearings (10) is smaller than the diameter of the unwinding roller (2), the two ends of the unwinding roller (2) are respectively abutted with the follower bearing groups, and the axis of the unwinding roller (2) is parallel to the axis of the follower bearings (10).

6. The PE wound film control unreeling device according to claim 5, wherein two unreeling roller assemblies arranged in parallel and a follow-up bearing group used for bearing the two unreeling roller assemblies are arranged on the frame (1), and the frame (1) is composed of a plurality of supporting rods (101).

7. The PE wound film control unreeling device according to claim 5, wherein a pinch roller (202) is arranged on the unreeling roller (2), the pinch roller (202) is connected with the unreeling roller (2), and the pinch roller (202) is used for preventing the PE wound film from sliding on the unreeling roller (2).

8. The PE wound film control unreeling device according to any one of claims 1-7, further comprising a material shortage reminding mechanism, wherein the material shortage reminding mechanism comprises a sensor (11) and an alarm device, the sensor (11) is connected with the rack (1), the sensor (11) is electrically connected with the alarm device, and the alarm device is fixedly connected with the rack (1).

9. A PE wound film control unwind as claimed in claim 8, characterized in that said alarm means is a warning light (12).

10. A PE wound film controlled unwinding device according to claim 8, characterized in that the sensor (11) is connected to the frame (1) by means of a sensor holder (13), that the sensor holder (13) is provided with a groove (131), that the sensor (11) is located in the groove (131) and that the sensor (11) is slidable in the groove (131) in the radial direction of the unwinding roller (2).