CN213321686U

CN213321686U - Transverse stretching device

Info

Publication number: CN213321686U
Application number: CN202021227968.5U
Authority: CN
Inventors: 施章峰; 毛健全; 尹望林
Original assignee: Fujian Furong New Material Co ltd
Current assignee: Furong New Materials Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-06-01
Anticipated expiration: 2030-06-29

Abstract

The utility model provides a transverse stretching device, which comprises a plastic film and slide rails symmetrically arranged at two sides of the plastic film; a clamping piece for clamping the plastic film is arranged on one side, close to each other, of each of the two sliding blocks, a left travel switch for driving the clamping piece to clamp the plastic film is arranged on the left side of the clamping piece, and a right travel switch for driving the clamping piece to loosen the plastic film is arranged on the right side of the clamping piece; by adopting the technical scheme, the driving device drives the sliding block in the sliding rail to move in a reciprocating manner, when the sliding block moves leftwards and touches the left travel switch, the clamping piece quickly fixes and clamps the plastic film, the plastic film is driven by the driving device to move rightwards after the clamping is fixed, when the sliding block moves rightwards and touches the right travel switch, the clamping piece quickly loosens the plastic film, then the sliding block resets again through the driving device, the last stretching operation is repeated until the work is finished, and therefore the transverse drawing efficiency of the plastic film is actually improved.

Description

Transverse stretching device

Technical Field

The utility model relates to a plastic film transverse stretching field, in particular to transverse stretching device.

Background

At present, there are various methods for molding plastic films, such as calendering, casting, blowing, stretching, and the like. The stretch film method is divided into two-way stretch and one-way stretch 2 types, and the two-way stretch is most applied. This is because in the production process of the plastic film, the processed high polymer is subjected to a certain degree of stretching orientation under the action of heat and tension, so that the molecules or molecular chains are orderly arranged, and as a result, the performance of the stretched plastic film is improved. Specifically, the plastic film produced by the stretching method has the following characteristics:

(1) the tensile strength and the elastic modulus of the film are obviously increased. The tensile strength is 3 to 5 times that of the unstretched film;

(2) the optical properties are improved, such as the glossiness and the transparency of the stretched film are improved;

(3) the barrier property is improved, and the gas transmittance is reduced because the macromolecules are arranged regularly and orderly;

(4) the heat resistance and the cold resistance are improved;

(5) the thickness uniformity and the dimensional stability are obviously improved;

(6) the production speed is high, the productivity is high, and the efficiency is high.

The principle of the plastic film biaxial stretching is as follows: after the high polymer resin is heated, melted and extruded into thick sheets by an extruder, the thick sheets are sequentially stretched by a certain multiple in the longitudinal direction and the transverse direction under the action of external force by a longitudinal drawing machine and a transverse drawing machine in a proper temperature range (in a high elastic state of the high polymer) which is higher than the glass transition temperature and lower than the melting point, so that molecular chains of the high polymer are oriented and orderly arranged in a direction parallel to the plane of the film; heat setting is carried out under the stretching state, so that the macromolecular structure is fixed; finally, the ideal plastic film can be prepared through cooling and subsequent treatment.

The existing transverse stretching device for the greenhouse film has serious energy consumption in the stretching process, the stretched greenhouse film has low performance, the requirements for improving the productivity and the production efficiency cannot be continuously met, and the requirements for energy conservation and emission reduction cannot be met.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the above problems in the prior art, the present invention provides a lateral stretching device to solve the above drawbacks existing in the background art.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

a transverse stretching device comprises a plastic film and sliding rails symmetrically arranged on two sides of the plastic film; the slide rail is internally provided with sliding blocks in a sliding manner, one side, close to each other, of each sliding block is provided with a clamping piece for clamping the plastic film, the left side of each clamping piece is provided with a left travel switch for driving the clamping piece to clamp the plastic film, the right side of each clamping piece is provided with a right travel switch for driving the clamping piece to loosen the plastic film, and the bottom of each sliding block is provided with a driving device for driving the sliding block to reciprocate in the slide rail.

Preferably, the driving device comprises a driving wheel, the driving wheel is meshed with the bottom of the sliding block, a first rotating wheel and a second rotating wheel are respectively arranged on the left side and the right side of the bottom of the driving wheel, the first rotating wheel and the second rotating wheel are both sector gears, the first rotating wheel and the second rotating wheel are respectively meshed with the driving wheel, a first driven wheel and a second driven wheel which are meshed with each other are further arranged at the bottom of the first rotating wheel, the first driven wheel is connected with the first rotating wheel through a synchronous belt, and the second driven wheel is connected with the second rotating wheel through a synchronous belt; the first driven wheel is fixedly connected with the output end of the servo motor.

Preferably, the holder includes that longitudinal section is the holding frame of Contraband type, the top of holding frame is equipped with the pneumatic cylinder, the flexible end of pneumatic cylinder wear to establish extremely in the holding frame and fixed mounting have the grip block, the grip block is used for being equipped with the blotter in the one side of centre gripping.

Preferably, the left travel switch and the right travel switch are cylinder control switches with models of 4V 110-06.

(III) advantageous effects

The beneficial effects of the utility model reside in that: by adopting the technical scheme, the driving device drives the sliding block in the sliding rail to move in a reciprocating manner, when the sliding block moves leftwards and touches the left travel switch, the clamping piece quickly fixes and clamps the plastic film, the plastic film is driven by the driving device to move rightwards after the clamping is fixed, when the sliding block moves rightwards and touches the right travel switch, the clamping piece quickly loosens the plastic film, then the sliding block resets again through the driving device, the last stretching operation is repeated until the work is finished, and therefore the transverse drawing efficiency of the plastic film is actually improved.

Drawings

FIG. 1 is a schematic structural view of a transverse stretching apparatus;

FIG. 2 is a schematic structural diagram of a driving device;

fig. 3 is a schematic structural view of the clamping member.

[ description of reference ]

1-a left travel switch; 2-a slide block; 3-a slide rail; 4-right travel switch; 5-plastic film; 6-a clamping member; 7-driving wheels; 8-a first rotating wheel; 9-a second rotating wheel; 10-a first driven wheel; 11-a second driven wheel; 601-pneumatic cylinder; 602-a holder; 603-clamping plate.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

Referring to fig. 1 to 3, the present invention provides a transverse stretching device, which includes a plastic film 5 and slide rails 3 symmetrically disposed on two sides of the plastic film 5; the sliding rails 3 are internally and slidably provided with sliding blocks 2, clamping pieces 6 for clamping the plastic films 5 are arranged on the sides, close to each other, of the two sliding blocks 2, a left travel switch 1 for driving the clamping pieces 6 to clamp the plastic films 5 is arranged on the left side of each clamping piece 6, a right travel switch 4 for driving the clamping pieces 6 to loosen the plastic films 5 is arranged on the right side of each clamping piece 6, and a driving device for driving the sliding blocks 2 to reciprocate in the sliding rails 3 is arranged at the bottoms of the sliding blocks 2; when the plastic film stretching device is used, the driving device drives the sliding block 2 in the sliding rail 3 to move back and forth, when the sliding block 2 moves leftwards and touches the left travel switch 1, the clamping piece 6 rapidly fixes and clamps the plastic film 5, after the clamping and fixing, the driving device drives the plastic film 5 to move rightwards, when the sliding block 2 moves rightwards and touches the right travel switch 4, the clamping piece 6 rapidly releases the plastic film 5, then the sliding block 2 resets again through the driving device, and the last stretching operation is repeated until the work is completed.

In the embodiment, the driving device comprises a driving wheel 7, the driving wheel 7 is meshed with the bottom of the sliding block 2, a first rotating wheel 8 and a second rotating wheel 9 are respectively arranged on the left side and the right side of the bottom of the driving wheel 7, the first rotating wheel 8 and the second rotating wheel 9 are both sector gears, the first rotating wheel 8 and the second rotating wheel 9 are respectively meshed with the driving wheel 7, a first driven wheel 10 and a second driven wheel 11 which are meshed with each other are further arranged at the bottom of the first rotating wheel 8, the first driven wheel 10 is connected with the first rotating wheel 8 through a synchronous belt, and the second driven wheel 11 is connected with the second rotating wheel 9 through a synchronous belt; the first driven wheel 10 is fixedly connected with the output end of the servo motor, the first driven wheel 10 and the second driven wheel 11 are driven to rotate in a meshed mode through driving the servo motor, the first rotating wheel 8 and the second rotating wheel 9 move relatively under the action of the synchronous belt, the first rotating wheel 8 and the second rotating wheel 9 are both sector gears, after the second rotating wheel 9 drives the driving wheel 7 to enable the sliding block 2 to move rightwards, the sliding block 2 does not affect movement of the second rotating wheel 9, the driving wheel 7 can be driven to enable the sliding block 2 to move leftwards through driving of the first rotating wheel 8, idle teeth on the first rotating wheel 8 and the second rotating wheel 9 are respectively utilized to rotate alternately, and the sliding block 2 can be driven by the servo motor to move leftwards and rightwards continuously.

In this embodiment, holder 6 includes that the longitudinal section is Contraband type's holding frame 602, and the top of holding frame 602 is equipped with pneumatic cylinder 601, and the flexible end of pneumatic cylinder 601 wears to establish to holding frame 602 in and fixed mounting has grip block 603, and grip block 603 is used for being equipped with the blotter in the one side of centre gripping, through the downward compression of pneumatic cylinder 601, makes the fixed centre gripping of grip block 603 live plastic film 5, and the blotter plays the cushioning effect.

In this embodiment, the left travel switch 1 and the right travel switch 4 are cylinder control switches with models of 4V110-06, and are respectively used for controlling retraction and release of cylinders.

The working principle of the utility model is as follows: through slider 2 reciprocating motion in the drive arrangement drive slide rail 3, after slider 2 moved left and touched left travel switch 1, holder 6 removed plastic film 5 fixed centre gripping fast, drive plastic film 5 and moved right under drive arrangement's drive after the centre gripping is fixed, after slider 2 moved right and touched right travel switch 4, holder 6 loosens plastic film 5 fast, rethread drive arrangement, slider 2 resets again, the last stretching operation of repetition again, until work completion can.

The above embodiments are only embodiments of the present invention, not limiting the scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or directly or indirectly applied to the related technical fields, are included in the protection scope of the present invention.

Claims

1. A transverse stretching device comprises a plastic film and sliding rails symmetrically arranged on two sides of the plastic film; the plastic film clamping device is characterized in that sliding blocks are arranged in the sliding rail in a sliding mode, clamping pieces used for clamping plastic films are arranged on one sides, close to each other, of the two sliding blocks, a left travel switch used for driving the clamping pieces to clamp the plastic films is arranged on the left side of each clamping piece, a right travel switch used for driving the clamping pieces to loosen the plastic films is arranged on the right side of each clamping piece, a driving device used for driving the sliding blocks to move in the sliding rail in a reciprocating mode is arranged at the bottoms of the sliding blocks and comprises a driving wheel, the driving wheel is meshed with the bottoms of the sliding blocks, a first rotating wheel and a second rotating wheel are arranged on the left side and the right side of the bottom of the driving wheel respectively, the first rotating wheel and the second rotating wheel are sector gears and are meshed with the driving wheel respectively, and a first driven wheel and a second driven wheel which are meshed with each other are further arranged at the bottoms of the, the first driven wheel is connected with the first rotating wheel through a synchronous belt, and the second driven wheel is connected with the second rotating wheel through a synchronous belt; the first driven wheel is fixedly connected with the output end of the servo motor.

2. The transverse stretching device as claimed in claim 1, wherein the clamping member comprises a clamping frame with a longitudinal section of Contraband type, a pneumatic cylinder is provided on the top of the clamping frame, the telescopic end of the pneumatic cylinder is inserted into the clamping frame and fixedly provided with a clamping plate, and a cushion pad is provided on one surface of the clamping plate for clamping.

3. The transverse stretching device as claimed in claim 1, wherein the left travel switch and the right travel switch are cylinder control switches of type 4V 110-06.