CN217553115U

CN217553115U - Stretching device is used in processing of polyethylene curtain coating ventilated membrane

Info

Publication number: CN217553115U
Application number: CN202221205401.7U
Authority: CN
Inventors: 王文博; 陈建华; 吴猛; 李少华
Original assignee: Cangzhou Jiaotong University; Hebei Haide Plastic Industry Co ltd
Current assignee: Cangzhou Jiaotong University; Hebei Haide Plastic Industry Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-10-11
Anticipated expiration: 2032-05-18

Abstract

The utility model relates to the technical field of film production equipment, in particular to a stretching device for processing polyethylene casting breathable films; the breathable film can be prevented from shrinking and narrowing in the width direction when being stretched, so that the width and thickness of the breathable film are more accurate, and the occupied area is reduced; the automatic drawing machine comprises a frame, first tension mechanism, second tension mechanism and supplementary tight mechanism that props, first tension mechanism and second tension mechanism fixed mounting respectively are in the front portion and the rear portion of frame, supplementary tight mechanism that props installs in the middle part of frame, first tension mechanism and second tension mechanism all include the mount pad, two sets of drive rollers, two sets of first driving cylinders, the compression roller with for two sets of drive rollers rotate the actuating mechanism who provides power, mount pad fixed mounting is in the frame, the rotatable installation of drive roller is on the mount pad, the equal fixed mounting of two sets of first driving cylinders is on the mount pad, the rotatable installation of compression roller is in the output of two sets of first driving cylinders.

Description

Stretching device is used in processing of polyethylene curtain coating ventilated membrane

Technical Field

The utility model relates to a technical field of film production facility especially relates to a stretching device is used in processing of polyethylene curtain coating ventilated membrane.

Background

As is well known, a stretching device for processing polyethylene casting breathable films is equipment for stretching, extending and processing the breathable films; the utility model discloses a No. CN213617861U discloses a steam heating stretching device for PVB film production, including processing the case, processing the case and setting up to the rectangle, the left and right sides is seted up the guide mouth of rectangle, two sets of director are provided with to the inside processing case of two guide mouths inboard, the equipartition has three sets of stretchers between two sets of directors, two sets of directors and three sets of stretchers are gone through and are inserted with the PVB film, processing the top surface of case and are provided with a set of electric boiler, the electric boiler communicates with steam uniform distributor through the steam guide pipe, the utility model discloses an electric boiler produces steam, and steam is led into steam uniform distributor through the steam guide pipe, and steam is finally spout through the steam nozzle on the steam uniform distributor, has enlarged the spray area, has increased the area of contact with the PVB film, is convenient for guarantee the effect of softening the PVB film, controls three sets of stretchers work through the controller, and a set of stretcher in the middle rises under the effect of cylinder, and two sets of stretchers on both sides descend under the effect of cylinder, realizes the stretch operation to PVB film promptly; the existing stretching device for processing the polyethylene cast breathable film is used for finding that when the breathable film is stretched, the width direction of the breathable film is easy to narrow due to stretching under the stretching action, so that the width size of the breathable film is changed, and the size and the thickness of the stretched film are deviated; realize the drawing of ventilated membrane through outside pulling force, need the multiunit elongator, cause equipment area big, have certain use limitation.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a can prevent that its width direction shrink from narrowing down when the ventilated membrane is tensile, guarantee that ventilated membrane width and thickness size are more accurate, reduce area's polyethylene curtain coating stretching device for ventilated membrane processing.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a following technical scheme: the stretching device comprises a rack, a first stretching mechanism, a second stretching mechanism and an auxiliary stretching mechanism, wherein the first stretching mechanism and the second stretching mechanism are respectively and fixedly installed at the front part and the rear part of the rack, the auxiliary stretching mechanism is installed at the middle part of the rack, the first stretching mechanism and the second stretching mechanism respectively comprise an installation seat, two groups of driving rollers, two groups of first driving cylinders, a compression roller and a driving mechanism for providing power for the rotation of the two groups of driving rollers, the installation seat is fixedly installed on the rack, the driving rollers are rotatably installed on the installation seat, the two groups of first driving cylinders are both fixedly installed on the installation seat, the compression roller is rotatably installed at the output ends of the two groups of first driving cylinders, the compression roller is positioned above the middle parts of the two groups of driving rollers, and the driving mechanism is fixedly installed on the rack; further, the driving mechanism comprises a driving motor and a gear transmission assembly, and the output end of the driving motor is in transmission connection with the two groups of driving rollers through the gear transmission assembly;

the auxiliary tightening mechanism comprises a rotating frame, two sets of second driving cylinders and a tightening roller, the rotating frame is rotatably installed on the rack, the tightening roller is rotatably installed on the rotating frame, the fixed ends of the two sets of second driving cylinders are hinged to be installed on the rack, and the output ends of the two sets of second driving cylinders are hinged to the rotating frame.

Preferably, an auxiliary pressing limiting mechanism is installed on the rotating frame and comprises a third driving cylinder and a pressing roller, the third driving cylinder is fixedly installed on the rotating frame, a bearing seat is fixedly installed at the output end of the third driving cylinder, and the pressing roller is rotatably installed on the bearing seat.

Preferably, the bearing seat is rotatably provided with a polygonal sleeve, the compression roller can be slidably inserted into the polygonal sleeve, and the compression roller is connected with the polygonal sleeve through the tension spring.

Preferably, the compression roller all is provided with the cavity with propping the inside of tight roller, the compression roller all installs the rotation sealing joint with the inside intercommunication of cavity with the left part and the right part of propping tight roller.

Preferably, a plurality of groups of electric heating rods are arranged on the rotating frame.

Preferably, the outer wall of the pressing roller is a frosted surface.

(III) advantageous effects

Compared with the prior art, the utility model provides a polyethylene curtain coating stretching device is used in ventilated membrane processing possesses following beneficial effect: this stretching device is used in processing of polyethylene curtain coating ventilated membrane, through between the compression roller and the drive roller with on first stretching mechanism and the second stretching mechanism with the ventilated membrane, first actuating cylinder action, the compression roller covers the ventilated membrane pressure on the drive roller, the output of second actuating cylinder shortens, prop the ventilated membrane of roller between with first stretching mechanism and the second stretching mechanism and prop tightly, the actuating mechanism action on first stretching mechanism and the second stretching mechanism, and the rotational speed of the drive roller on the first stretching mechanism is greater than the drive roller rotational speed on the second stretching mechanism, make and produce the velocity difference between first stretching mechanism and the second stretching mechanism, the ventilated membrane is stretched because of the velocity difference, carry out comprehensive pressure covering stretching effect with the ventilated membrane at the compression roller, can prevent that the width direction from gathering together because of the shrink, guarantee that ventilated membrane width and thickness size are more accurate, stretch the ventilated membrane through the mode of control stretching velocity difference, the rethread props up the compensation through propping the roller, in order to realize scientific stretching operation of ventilated membrane, equipment structure arrangement is reasonable, the whole area of equipment has effectively been reduced.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 isbase:Sub>A schematic cross-sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2 according to the present invention;

fig. 4 is a schematic view of the enlarged structure of a part a in fig. 2 according to the present invention;

in the drawings, the reference numbers: 1. a frame; 2. a mounting base; 3. a drive roller; 4. a first drive cylinder; 5. pressing rollers; 6. a drive mechanism; 7. a rotating frame; 8. a second drive cylinder; 9. a tightening roller; 10. a third drive cylinder; 11. a pressure roller; 12. a bearing seat; 13. a tension spring; 14. a polygonal sleeve; 15. rotating the sealing joint; 16. an electric heating rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model discloses a stretching device is used in processing of polyethylene curtain coating ventilated membrane, including frame 1, first stretching mechanism, second stretching mechanism and supplementary straining mechanism, first stretching mechanism and second stretching mechanism fixed mounting are respectively in the front portion and the rear portion of frame 1, supplementary straining mechanism installs in the middle part of frame 1, first stretching mechanism and second stretching mechanism all include mount pad 2, two sets of drive roller 3, two sets of first driving cylinder 4, compression roller 5 and for two sets of drive roller 3 rotate provide actuating mechanism 6 of power, mount pad 2 fixed mounting is on frame 1, drive roller 3 rotatable mounting is on mount pad 2, two sets of first driving cylinder 4 fixed mounting are on mount pad 2, compression roller 5 rotatable mounting is in the output of two sets of first driving cylinder 4, compression roller 5 is located the middle part top of two sets of drive roller 3, actuating mechanism 6 fixed mounting is on frame 1; further, the driving mechanism 6 comprises a driving motor and a gear transmission assembly, and the output end of the driving motor is in transmission connection with the two groups of driving rollers 3 through the gear transmission assembly; the gear transmission assembly comprises a driving roller, two groups of driven rollers and a transmission roller, the driving roller is fixedly arranged at the output end of the driving motor, the two groups of driven rollers are respectively and fixedly arranged on the two groups of driving rollers 3, the two groups of driven rollers are connected in a synchronous transmission mode through the transmission roller, and the driving roller is meshed with one group of driven rollers.

The auxiliary tightening mechanism comprises a rotating frame 7, two groups of second driving cylinders 8 and tightening rollers 9, the rotating frame 7 is rotatably installed on the rack 1, the tightening rollers 9 are rotatably installed on the rotating frame 7, the fixed ends of the two groups of second driving cylinders 8 are hinged to the rack 1, and the output ends of the two groups of second driving cylinders 8 are hinged to the rotating frame 7; through the extension distance of 8 output ends of the second driving cylinder of adjustment, make the tight roller 9 of propping adjust the compensation to the taut degree of ventilated membrane, when first stretching mechanism and second stretching mechanism speed difference realize the tensile adjustment to the ventilated membrane, the accessible props tight roller 9 and realizes propping up the ventilated membrane to guarantee that the ventilated membrane is stretched smoothly.

Specifically, an auxiliary pressing limiting mechanism is mounted on the rotating frame 7 and comprises a third driving cylinder 10 and a pressing roller 11, the third driving cylinder 10 is fixedly mounted on the rotating frame 7, a bearing seat 12 is fixedly mounted at the output end of the third driving cylinder 10, and the pressing roller 11 is rotatably mounted on the bearing seat 12; when the breathable film is stretched, the output end of the third driving cylinder 10 is extended, and the left part and the right part of the breathable film are pressed on the tensioning roller 9 by the pressing roller 11, so that the breathable film is further prevented from being shortened in the width direction in the stretching process.

Specifically, the device further comprises a tension spring 13, the bearing seat 12 is rotatably provided with a polygonal sleeve 14, the compression roller 11 can be slidably inserted into the polygonal sleeve 14, and the compression roller 11 and the polygonal sleeve 14 are connected through the tension spring 13; under extension spring 13's pulling effect, two sets of compression rollers 11 move to keeping away from the 9 central directions of straining roller respectively along polygon sleeve 14, and when the ventilated membrane shortened because of tensile width direction appearance, compression roller 11 formed the pulling effect to the left and right sides of ventilated membrane, further prevented that width direction's shortening from appearing in the ventilated membrane.

Specifically, cavities are arranged inside the compression roller 5 and the tightening roller 9, and the left part and the right part of the compression roller 5 and the tightening roller 9 are provided with rotary sealing joints 15 communicated with the interiors of the cavities; will rotate sealing joint 15 and outside steam air feed air supply intercommunication, steam is to compression roller 5 and stretch roller 9 heating to the ventilated membrane that passes through heats, improves the ductility of ventilated membrane, makes the ventilated membrane can be smooth stretched.

Specifically, a plurality of groups of electric heating rods 16 are arranged on the rotating frame 7; the ventilated membrane passing through can be subjected to auxiliary heating through the electric heating rod 16, so that the extensibility of the ventilated membrane is further improved, and the stretching effect of the ventilated membrane is ensured.

Specifically, the outer wall of the pressure roller 11 is a frosted surface; the pressure roller 11 adopts the frosted surface, can increase the frictional force between pressure roller 11 and the ventilated membrane, avoids pressure roller 11 to appear the relative slip between pressure roller 11 and the ventilated membrane when stretching the ventilated membrane width direction, further prevents that the ventilated membrane from appearing the width direction shrink when stretching.

When the breathable film stretching device is used, the breathable film passes through a position between the compression roller 5 and the driving roller 3 on the first stretching mechanism and the second stretching mechanism, the first driving cylinder 4 acts, the compression roller 5 presses the breathable film on the driving roller 3, the output end of the second driving cylinder 8 is shortened, the stretching roller 9 stretches the breathable film between the first stretching mechanism and the second stretching mechanism, the driving mechanisms 6 on the first stretching mechanism and the second stretching mechanism act, the rotating speed of the driving roller 3 on the first stretching mechanism is larger than that of the driving roller 3 on the second stretching mechanism, a speed difference is generated between the first stretching mechanism and the second stretching mechanism, the breathable film is stretched due to the speed difference, and the breathable film can be prevented from gathering due to shrinkage in the width direction under the effect that the compression roller 5 comprehensively presses the breathable film.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "over 8230" \8230on "," over 82308230; "over 8230;" and "over 8230; \8230; over" in the present disclosure should be interpreted in the broadest manner such that "over 8230;" over 8230 ";" not only means "directly over something", but also includes the meaning of "over something" with intervening features or layers therebetween, and "over 8230;" over 8230 ";" or "over 8230, and" over "not only includes the meaning of" over "or" over "but also may include the meaning of" over "or" over "with no intervening features or layers therebetween (i.e., directly over something).

Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The stretching device for processing the polyethylene cast breathable film is characterized by comprising a rack (1), a first stretching mechanism, a second stretching mechanism and an auxiliary stretching mechanism, wherein the first stretching mechanism and the second stretching mechanism are respectively and fixedly installed at the front part and the rear part of the rack (1), the auxiliary stretching mechanism is installed at the middle part of the rack (1), the first stretching mechanism and the second stretching mechanism respectively comprise a mounting seat (2), two groups of driving rollers (3), two groups of first driving cylinders (4), a compression roller (5) and a driving mechanism (6) for providing power for the rotation of the two groups of driving rollers (3), the mounting seat (2) is fixedly installed on the rack (1), the driving rollers (3) are rotatably installed on the mounting seat (2), the two groups of first driving cylinders (4) are fixedly installed on the mounting seat (2), the compression roller (5) is rotatably installed at the output ends of the two groups of first driving cylinders (4), the compression roller (5) is positioned above the middle parts of the two groups of driving rollers (3), and the driving mechanism (6) is fixedly installed on the rack (1);

supplementary tight mechanism that props includes rotating turret (7), two sets of second driving cylinder (8) and props tight roller (9), rotating turret (7) are rotated and are installed on frame (1), prop tight roller (9) rotatable the installing on rotating turret (7), the stiff end of two sets of second driving cylinder (8) is all articulated to be installed on frame (1), and the output of two sets of second driving cylinder (8) all articulates with rotating turret (7).

2. The stretching device for processing the polyethylene casting breathable film according to claim 1, wherein an auxiliary pressing limiting mechanism is mounted on the rotating frame (7), the auxiliary pressing limiting mechanism comprises a third driving cylinder (10) and a pressing roller (11), the third driving cylinder (10) is fixedly mounted on the rotating frame (7), a bearing seat (12) is fixedly mounted at an output end of the third driving cylinder (10), and the pressing roller (11) is rotatably mounted on the bearing seat (12).

3. The stretching device for processing the polyethylene casting breathable film as claimed in claim 2, further comprising a tension spring (13), wherein the bearing seat (12) is rotatably provided with a polygonal sleeve (14), the pressure roller (11) is slidably inserted into the polygonal sleeve (14), and the pressure roller (11) and the polygonal sleeve (14) are connected through the tension spring (13).

4. The stretching device for processing the polyethylene casting breathable film according to claim 3, wherein cavities are arranged inside the compression roller (5) and the stretching roller (9), and the left part and the right part of the compression roller (5) and the stretching roller (9) are provided with rotary sealing joints (15) communicated with the cavities.

5. A stretching apparatus for processing cast polyethylene breathable film according to claim 4, wherein said rotary frame (7) is provided with a plurality of groups of electric heating bars (16).

6. A stretching device for processing polyethylene casting breathable films according to claim 5, characterized in that the outer wall of the pressure roller (11) is a frosted surface.