CN216235105U

CN216235105U - Material cutting device

Info

Publication number: CN216235105U
Application number: CN202122888956.8U
Authority: CN
Inventors: 赖红军
Original assignee: Foshan Aiyuan Machinery Equipment Co ltd
Current assignee: Foshan Aiyuan Machinery Equipment Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-04-08
Anticipated expiration: 2031-11-24

Abstract

The utility model particularly discloses a cutting device which comprises a machine base, a cutting unit and a measuring unit, wherein a rotary table is rotatably arranged on the machine base, and a first unwinding unit and a second unwinding unit are arranged on the rotary table; the cutting unit comprises a cutting arm and a first driving piece, wherein a cutter is arranged at one end of the cutting arm, the other end of the cutting arm is rotatably connected to the base, one end of the first driving piece is connected with the base, and the other end of the first driving piece is rotatably connected with the cutting arm; the measuring unit includes encoder, correlation electric eye and proximity switch, and encoder, proximity switch all set up in the axle center department of carousel, and the correlation electric eye sets up on the blank arm, and encoder, correlation electric eye and proximity switch all are connected with control system electricity, avoid the trouble and the manual measurement of manual input roll diameter at every turn to have the problem of measuring loaded down with trivial details, making mistakes easily.

Description

Material cutting device

Technical Field

The utility model relates to the technical field of film coating equipment, in particular to a cutting device.

Background

The cutting device of the coating machine in the prior art generally has a double-station unwinding shaft, and unwinding is realized by adding a film roll on the unwinding shaft. After one of the film rolls is unreeled and cut, the connection with a new material of a new film roll is needed, and the process is called material receiving. In order to ensure that the linear speeds of the new material and the old material are synchronous during material receiving, the roll diameter of a new film roll needs to be measured. In the prior art, the roll diameter of a new film roll is input into a cutting device when the roll is changed every time mainly through manual measurement. In the whole process, the manual measurement has the problems of complicated measurement and easy error, and the manual input is required every time, so that the whole process is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a cutting device which avoids the trouble of manually inputting the roll diameter each time and the problems of complicated measurement and easy error existing in manual measurement.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a material cutting device comprises

The automatic unwinding device comprises a base, wherein a rotary table is rotatably arranged on the base, and a first unwinding unit and a second unwinding unit are arranged on the rotary table;

the cutting unit comprises a cutting arm and a first driving piece, wherein a cutter is arranged at one end of the cutting arm, the other end of the cutting arm is rotatably connected to the base, one end of the first driving piece is connected with the base, and the other end of the first driving piece is rotatably connected with the cutting arm;

the measuring unit comprises an encoder, a correlation electric eye and a proximity switch, wherein the encoder and the proximity switch are arranged at the axis of the turntable, the correlation electric eye is arranged on the material cutting arm, and the encoder, the correlation electric eye and the proximity switch are electrically connected with the control system.

Furthermore, first unit of unreeling includes that first unreeling shaft and first cross the membrane roller, the second unreels the unit and includes that the second unreels the axle and the membrane roller is crossed to the second, first unreeling shaft, second unreel the axle, first cross the membrane roller and the second crosses the membrane roller and distributes along the circumference of carousel, and first unreeling shaft and second unreel the axle symmetry, and first cross the membrane roller and pass the membrane roller symmetry with the second.

Further, the blank unit still includes second driving piece and swing arm, the one end of second driving piece is connected on the blank arm, the other end with the one end of swing arm is rotated and is connected, the middle part of swing arm is rotated and is connected on the blank arm, and the one end that the second driving piece was kept away from to the swing arm is equipped with first compression roller, first compression roller is close to the correlation electric eye.

Furthermore, one end of the material cutting arm is provided with a second pressing roller, and the cutter is located between the first pressing roller and the second pressing roller.

Furthermore, a guide roller is arranged on the machine base and is positioned below the material cutting arm.

The utility model has the beneficial effects that: the position of the rotary table is positioned through the proximity switch, when the film roll on the second unreeling shaft blocks the radio-eye, the control system stops the rotation of the rotary table, at the moment, the rotary table rotates by an angle (the angle formed between a specific position and the stop rotation of the rotary table), the angle is measured by the encoder, and the control system calculates the roll diameter of the film roll on the second unreeling shaft according to the angle, so that the trouble of manually inputting the roll diameter at each time and the problems of complicated measurement and easy error existing in manual measurement can be avoided.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic application diagram of an embodiment of the present invention.

In the figure, 1-machine base, 11-rotary table, 12-first unreeling unit, 121-first unreeling shaft, 122-first film passing roller, 13-second unreeling unit, 131-second unreeling shaft, 132-second film passing roller, 14-guide roller, 2-cutting unit, 21-cutting arm, 22-first driving piece, 23-cutting piece, 24-second driving piece, 25-swing arm, 26-first press roller, 27-second press roller, 3-measuring unit, 31-encoder, 32-correlation electric eye, 33-proximity switch, 4-film reel and 5-film.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It should be noted that if the description of "first", "second", etc. is provided in the embodiment of the present invention, the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

As shown in fig. 1-2, the material cutting device provided by the utility model comprises a machine base 1, a material cutting unit 2 and a measuring unit 3, wherein a rotating disc 11 is rotatably arranged on the machine base 1, a first unwinding unit 12 and a second unwinding unit 13 are arranged on the rotating disc 11, the first unwinding unit 12 and the second unwinding unit 13 are both used for placing a film roll 4, the first unwinding unit 12 comprises a first unwinding shaft 121 and a first film passing roller 122, the second unwinding unit 13 comprises a second unwinding shaft 131 and a second film passing roller 132, the first unwinding shaft 121, the second unwinding shaft 131, the first film passing roller 122 and the second film passing roller 132 are circumferentially distributed along the rotating disc 11, the first unwinding shaft 121 is symmetrical to the second unwinding shaft 131, the first film passing roller 122 is symmetrical to the second film passing roller 132, and the film roll 4 is placed on the first unwinding shaft 121 and the second unwinding shaft 131. The film 5 after the film roll 4 on the first unwinding shaft 121 is unwound crosses the first film passing roller 122, and the film 5 after the film roll 4 on the second unwinding shaft 131 is unwound crosses the second film passing roller 132; meanwhile, a guide roller 14 is arranged on the machine base 1, the guide roller 14 is positioned below the cutting arm 21, and the guide roller 14 is used for guiding and tensioning the film 5.

The cutting unit 2 comprises a cutting arm 21 and a first driving piece 22, a cutter 23 is arranged at one end of the cutting arm 21, the cutter 23 is used for cutting off the film 5, the other end of the cutting arm 21 is rotatably connected to the base 1, one end of the first driving piece 22 is connected to the base 1, and the other end of the first driving piece 22 is rotatably connected to the cutting arm 21. The first driving part 22 is preferably an air cylinder, and the first driving part 22 is used for driving the cutting arm 21 to swing, so that the cutting knife 23 on the cutting arm 21 cuts off the film 5; the cutting unit 2 further comprises a second driving part 24 and a swing arm 25, one end of the second driving part 24 is connected to the cutting arm 21, the other end of the second driving part is connected to one end of the swing arm 25 in a rotating mode, the middle of the swing arm 25 is connected to the cutting arm 21 in a rotating mode, and a first pressing roller 26 is arranged at one end, far away from the second driving part 24, of the swing arm 25. The second driving element 24 preferably selects an air cylinder, the second driving element 24 drives the swing arm 25 to rotate, the first pressing roller 26 is pressed downwards and presses the film 5 after the film roll 4 on the first unreeling shaft 121 is unreeled, the film 5 is tensioned, the cutter 23 is convenient to cut off the film 5, and meanwhile, the film 5 of the film roll 4 on the first unreeling shaft 121 is flatly laid on the refuting opening of the film roll 4 on the second unreeling shaft 131. The double-sided tape is attached to the flap of the film roll 4 on the second unwinding shaft 131, and the film 5 of the old film roll 4 is connected to the film 5 of the new film roll 4.

The measuring unit 3 comprises an encoder 31, an opposite-shooting electric eye 32 and a proximity switch 33, the encoder 31 and the proximity switch 33 are both arranged at the axis of the rotary table 11, the opposite-shooting electric eye 32 is arranged on the cutting arm 21, the first pressing roller 26 is close to the opposite-shooting electric eye 32, and the encoder 31, the opposite-shooting electric eye 32 and the proximity switch 33 are all electrically connected with the control system. The proximity switch 33 is used to position the turntable 11 and the pair of shooting eyes 32 is used to sense whether a new film roll 4 (film roll 4 on the second unwind spool 131) is near the cutting arm 21.

As shown in fig. 2, the working principle of the device is as follows: the first driving member 22 drives the cutting arm 21 to be raised, the film rolls 4 are respectively placed on the first unwinding shaft 121 and the second unwinding shaft 131, and the film 5 after the film roll 4 of the first unwinding shaft 121 is unwound sequentially crosses the top of the first film passing roller 122 and the bottom of the guide roller 14. When unwinding, the film roll 4 on the second unwinding shaft 131 is located at the lower left of the film roll 4 on the first unwinding shaft 121, and when the film roll 4 on the first unwinding shaft 121 is soon unwound, the control system drives the rotary table 11 to rotate to a specific position, which is fixed and is located by the proximity switch 33. Then the rotating disc 11 continues to rotate, when the film roll 4 on the second unreeling shaft 131 blocks the radio-eye 32, the control system stops the rotation of the rotating disc 11, at this time, the rotating disc 11 rotates by an angle (an angle formed between a specific position and the stop of the rotation of the rotating disc 11), the angle is measured by the encoder 31, and the control system calculates the roll diameter of the film roll 4 on the second unreeling shaft 131 according to the angle, so that the trouble of manually inputting the roll diameter each time and the problems of complicated measurement and easy error existing in manual measurement can be avoided. Then, the film roll 4 on the second unwinding shaft 131 is pre-accelerated, the second driving element 24 drives the first pressing roller 26 on the swing arm 25 to press down the film 5 after the film roll 4 on the first unwinding shaft 121 is unwound, so that the film 5 is tensioned, the first pressing roller 26 flatly lays the film 5 on the double-sided adhesive of the film roll 4 on the second unwinding shaft 131, so that the film 5 is connected with a new material of the new film roll 4 (the film roll 4 on the second unwinding shaft 131), and meanwhile, the cutter 23 cuts off the film 5, so that the material receiving is completed. Then, the turntable 11 is continuously rotated clockwise, so that the positions of the second unwinding shaft 131 and the first unwinding shaft 121 are exchanged, and the film 5 after the film roll 4 on the second unwinding shaft 131 is unwound crosses the second film passing roller 132 to be continuously unwound, so that the whole material receiving process does not need to be stopped.

Further, one end of the cutting arm 21 is provided with a second pressing roller 27, and the cutting knife 23 is positioned between the first pressing roller 26 and the second pressing roller 27. The first pressure roller 26 and the second pressure roller 27 simultaneously press and tension the film 5, so that the cutter 23 cuts the film 5 to make the cut of the film 5 neat.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims

1. A material cutting device is characterized by comprising

The device comprises a machine base (1), wherein a rotary table (11) is rotatably arranged on the machine base (1), and a first unreeling unit (12) and a second unreeling unit (13) are arranged on the rotary table (11);

the cutting unit (2) comprises a cutting arm (21) and a first driving piece (22), a cutter (23) is arranged at one end of the cutting arm (21), the other end of the cutting arm (21) is rotatably connected to the base (1), one end of the first driving piece (22) is connected with the base (1), and the other end of the first driving piece (22) is rotatably connected with the cutting arm (21);

measuring unit (3), including encoder (31), correlation electric eye (32) and proximity switch (33), encoder (31), proximity switch (33) all set up the axle center department of carousel (11), correlation electric eye (32) set up in on blank arm (21), and encoder (31), correlation electric eye (32) and proximity switch (33) all are connected with control system electricity.

2. A blanking unit according to claim 1, characterized in that: first unreeling unit (12) include first unreeling axle (121) and first membrane roller (122) of crossing, second unreeling unit (13) include that the second unreels axle (131) and second and crosses membrane roller (132), first unreeling axle (121), second unreel axle (131), first membrane roller (122) of crossing and second cross the circumferential distribution of membrane roller (132) along carousel (11), and first unreeling axle (121) and second unreel axle (131) symmetry, first membrane roller (122) of crossing and second cross membrane roller (132) symmetry.

3. A blanking unit according to claim 1, characterized in that: blank unit (2) still include second driving piece (24) and swing arm (25), the one end of second driving piece (24) is connected on blank arm (21), the other end with the one end of swing arm (25) is rotated and is connected, the middle part of swing arm (25) is rotated and is connected on blank arm (21), and swing arm (25) keep away from the one end of second driving piece (24) and be equipped with first compression roller (26), first compression roller (26) are close to correlation electric eye (32).

4. A blanking unit according to claim 3, characterized in that: one end of the cutting arm (21) is provided with a second pressing roller (27), and the cutting knife (23) is positioned between the first pressing roller (26) and the second pressing roller (27).

5. A blanking unit according to claim 1, characterized in that: the automatic material cutting machine is characterized in that a guide roller (14) is arranged on the machine base (1), and the guide roller (14) is located below the material cutting arm (21).