CN202785018U

CN202785018U - Film cutting device

Info

Publication number: CN202785018U
Application number: CN2012203079774U
Authority: CN
Inventors: 金怀龙; 徐成呈; 沈安乐; 李红军
Original assignee: NANJING LANPUCHENG INDUSTRIAL Co Ltd
Current assignee: NANJING LANPUCHENG INDUSTRIAL Co Ltd
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2013-03-13
Anticipated expiration: 2022-06-28

Abstract

The utility model relates to a film cutting device which comprises an unreeling device, a guide roller, an unreeling wall plate, a flattening roller, a reeling wall plate, a cutting knife device, a reeling device and a knife groove roller. The unreeling device comprises an unreeling roller, a tension detecting device, a tension controller, a magnetic power braking device and a first frequency conversion motor. The reeling device comprises a press roller, a press roller air cylinder, a main power traction roller, a chuck and a second frequency conversion motor. The cutting knife device comprises a third frequency conversion motor, a knife seat, an upper knife shaft and a lower knife groove roller. A knife blade is a round hob. With the film cutting device, a to-be-cut film is constantly matched with materials in terms of tension in the process of being conveyed and cut. The situation that the to-be-cut film is not wrinkled or scraped is ensured, precision of a cutting size is high and neatness and smoothness of a reeled film are ensured.

Description

A kind of film cutter

Technical field

The utility model relates to a kind of film cutter, particularly a kind of cutting device for mylar.

Background technology

[0002]Cutting machine is a kind of wide cut paper or divided thin film to be cut into many in a narrow margin mechanical equipments of material, is usually used in the machinery of papermaking, printing and packing.

The main nip rolls assurance slitting material of existing cutting machine is cut with constant speedpump, wind-up roll shaft is pressed on the hold-down roller by the cylinder bearing capacity, the more and more thick diameter of material that is wound on when rolling on the wind-up roll increases, the problems that the wide cut of in the past cutting is followed such as face sliding injury, wrinkle, the lotus leaf volume during expansion, the section rolling is not whole etc., the problems referred to above were particularly outstanding when particularly wide-range film was cut, and badly influenced the rolling quality.

The utility model content

For addressing the above problem, this is practical newly to provide a kind of film cutter, detect by variable frequency control, tension force and to make film carrying, remaining tension force and the relative uniformly speed that is complementary with material in the cutting process, effectively reduce and cut the resistance that produces.

For achieving the above object, the utility model provides a kind of film cutter, comprises unwinding device, guiding roller, unreels wallboard, leveling roller, rolling wallboard, cutter, wrap-up and cutter grooved roller;

Described unwinding device comprise unreeling shaft, tension detector, tension control assembly, electromagnetic power brake and

The first variable-frequency motor; The first variable-frequency motor connects unreeling shaft and controls its rotating speed, tension detector contacts with film to be cut, detect its tension force and signal is passed to tension control assembly, tension control assembly links to each other with variable-frequency motor, the magnetic controller links to each other with guiding roller, and the rotating speed of guiding roller is matched with the rotating speed of the spool of unwinding device;

Described wrap-up comprises pressure roller, pressure roller cylinder, active force nip rolls, dop, volume core and the second variable-frequency motor; The pressure roller cylinder connects pressure roller, and pressure roller and active force nip rolls are tangent, and the active force nip rolls link to each other with the second variable-frequency motor, and the dop clamping divides film and the volume core that cuts;

Described cutter comprises the 3rd variable-frequency motor, cylinder, tool rest, upper cutter shaft, cutter grooved roller and blade; Blade is selected circular hobboing cutter; The 3rd variable-frequency motor connects blade, and cylinder is connected with tool rest by upper cutter shaft, is provided with the cutter groove that can hold blade in the tool rest, and the edge of cutter grooved roller is provided with groove, and when cutter moved, blade embedded in the groove of cutter grooved roller; When cutter was out of service, blade placed in the tool rest.

The blade openings angle of described cutter is the 10-30 degree.

Film cutter provided by the utility model makes to be cut the film material and is carrying, remaining the tension force that is complementary with material in the cutting process, the film material is cut in assurance can be not wrinkling in cutting process, scratch, cut the dimensional accuracy height, the rolling face is smooth, end face is neat.

The below will be described further the technical scheme that the utility model provides.

Description of drawings

Fig. 1 is the structural representation of splitting system.

Fig. 2 is the structural representation of cutter.

Fig. 3 is the section-drawing of cutter blade.

The specific embodiment

Below in conjunction with specific embodiment the utility model is described further, but protection domain of the present utility model is not limited in this.

The film cutter that the utility model provides such as Fig. 1 comprise successively unwinding device 1, guiding roller 2, unreel wallboard 3, leveling roller 4, rolling wallboard 5, cutter 6, pressure roller 7, wrap-up 8, active force nip rolls 9 and cutter grooved roller 10.

Described unwinding device 1 comprises unreeling shaft, tension detector, tension control assembly, magnetic powders brake

Device and the first variable-frequency motor (not drawing in the drawings); The first variable-frequency motor connects unreeling shaft and controls its rotating speed, and tension detector contacts with film to be cut, and detects its tension force and signal is passed to tension control assembly, and tension control assembly links to each other with the first variable-frequency motor, and the magnetic controller links to each other with guiding roller 2;

Described wrap-up comprises pressure roller 7, pressure roller cylinder, active force nip rolls 9, dop, volume core and the second variable-frequency motor (not drawing in the drawings); The pressure roller cylinder connects pressure roller, and pressure roller and active force nip rolls 9 are tangent, and active force nip rolls 9 link to each other with the second variable-frequency motor, and dop is used for fixing volume core, will divide the film that cuts to close on the volume core;

Fig. 2 is that the described cutter 6 of cutter comprises the 3rd variable-frequency motor 11, cylinder 13, tool rest 17, upper cutter shaft 14, grooved roll 12 and blade 16; Blade 16 is selected circular hobboing cutter; The 3rd variable-frequency motor 11 connects blade, and cylinder 13 is connected with tool rest 17 by upper cutter shaft 14, is provided with the cutter groove that can hold blade 16 in the tool rest 17, and the edge of cutter grooved roller 12 is provided with groove, and when cutter moved, blade 16 embedded in the groove of cutter grooved roller 12; When cutter was out of service, blade 16 placed in the tool rest 17.

Cutter described in the utility model effectively reduces cuts the resistance that produces, and by the rotating speed of variable-frequency motor control blade, makes the rotating speed of blade and quilt be cut the constant speed ratio of film material maintenance, thereby guarantees that rolling film material end face is neat.

The above embodiment is a kind of of the more preferably concrete embodiment of the utility model, and the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacement all should be included in the protection domain of the present utility model.

Claims

1. film cutter comprises unwinding device (1), guiding roller (2), unreels wallboard (3), leveling roller (4), rolling wallboard (5), cutter (6), wrap-up (8) and cutter grooved roller (10); It is characterized in that:

Described unwinding device (1) comprises unreeling shaft, tension detector, tension control assembly, electromagnetic power brake and the first variable-frequency motor; The first variable-frequency motor connects unreeling shaft and controls its rotating speed, and tension detector contacts with film to be cut, and detects its tension force and signal is passed to tension control assembly, and tension control assembly links to each other with the first variable-frequency motor, and electromagnetic power brake links to each other with guiding roller (2);

Described wrap-up comprises pressure roller (7), pressure roller cylinder, active force nip rolls (9), dop, volume core and the second variable-frequency motor; The pressure roller cylinder connects pressure roller, and pressure roller and active force nip rolls (9) are tangent, and active force nip rolls (9) link to each other with the second variable-frequency motor, and the dop clamping divides film and the volume core that cuts;

Described cutter (6) comprises the 3rd variable-frequency motor (11), cylinder (14), tool rest (17), upper cutter shaft (15), cutter grooved roller (12) and blade (16); Blade (16) is selected circular hobboing cutter; The 3rd variable-frequency motor (11) connects blade, cylinder (14) is connected with tool rest (17) by upper cutter shaft (15), be provided with the cutter groove that can hold blade (16) in the tool rest (17), the edge of cutter grooved roller (12) is provided with groove, when cutter moved, blade (16) embedded in the groove of cutter grooved roller (12); When cutter was out of service, blade (16) placed in the tool rest (17).

2. film cutter according to claim 1, the opening angle that it is characterized in that described blade (16) is the 10-30 degree.