CN210192956U

CN210192956U - Film roll of stretching out

Info

Publication number: CN210192956U
Application number: CN201921049350.1U
Authority: CN
Inventors: Peifu Wu; 吴培服
Original assignee: Jiangsu Shuangxing Color Plastic New Materials Co Ltd
Current assignee: Jiangsu Shuangxing Color Plastic New Materials Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-03-27
Anticipated expiration: 2029-07-05

Abstract

The utility model provides a film roll of stretching for stretch out and straighten the film to axial both ends in the film transportation process, the mirror image is formed with at least a pair of spiral slot (1) on the surface of film roll of stretching (100), slot (1) follow the intermediate position of film roll of stretching (100) respectively to both ends spiral gradually extend, the spiral direction of a pair of slot (1) opposite; in a cross section passing through the axis (200) of the film spreader roll (100), the width A of the top surface between adjacent grooves (1) is 5-10 mm, the width B of the opening of the groove (1) is 2-5 mm, and the depth C of the groove (1) is 2-5 mm. The utility model discloses a film roll of stretching can stretch the film to the axial both ends and stretch to flare-out at transportation process, can effectively eliminate and produce the fold when avoiding the film to carry.

Description

Film roll of stretching out

Technical Field

The utility model relates to a film conveying equipment, especially the accessory that is used for carrying the film, in particular to film roll of stretching.

Background

Film products are widely used in the field of packaging and production for everyday consumption. For example, various window films widely used in buildings and vehicles; various ITO diaphragms applied to the fields of touch and light modulation; heat shrinkable films, packaging films, reflective films, decorative films, aluminum-plated films, coated films, printed films, etc. used in the field of daily life; used for backboard diaphragms and the like in the solar field. When the various film sheets in the prior art are produced, a rolled film is used as a base film, or the rolled multilayer film is compounded to produce the required film sheet, such as a window film and the like.

When in production, the coiled film needs to be drawn from a roll of film and then conveyed to the next processes of cutting, compounding, coating and the like through conveying rollers. Because the film is very thin and soft, the film is difficult to keep flat in the transmission process, and the product is easy to scrap due to the wrinkles.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide a film spreader roll to reduce or avoid the aforementioned problems.

In order to solve the technical problem, the utility model provides a film stretching roller for stretching and straightening a film to two axial ends in the film conveying process, wherein, the outer surface of the film stretching roller is provided with at least a pair of spiral grooves in a mirror image manner, the grooves extend from the middle position of the film stretching roller to the two ends respectively and gradually in a spiral manner, and the spiral directions of the pair of grooves are opposite; in a cross section passing through the axis of the film stretching roll, the width A of the top surface between adjacent grooves is 5-10 mm, the opening width B of the grooves is 2-5 mm, and the depth C of the grooves is 2-5 mm.

Preferably, in a cross section passing through the axis of the film spreader roll, a first side wall of the groove close to the middle of the film spreader roll is perpendicular to the axis, and an included angle between a second side wall far from the middle of the film spreader roll and the first side wall is 45-75 degrees, so that an opening which is narrow at the bottom and wide at the top is formed.

Preferably, the outer surface of the film spreader roll is formed with 2 to 12 pairs of spiral grooves, each pair of grooves being arranged in a mirror image with respect to a middle position of the film spreader roll.

The utility model discloses a film roll of stretching can stretch the film to the axial both ends and stretch to flare-out at film transportation process, produces the fold when can effectively eliminate and avoid the film to carry.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein the content of the first and second substances,

fig. 1 is a schematic perspective view of a film spreader roll according to an embodiment of the present invention;

FIG. 2 shows a front view of the film spreader roll of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the film spreader roll of FIG. 1;

fig. 4 is an enlarged partial view of the grooves of the film spreader roll of fig. 3.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.

As shown in fig. 1 to 4, the present application provides a film spreader roll, which can be used to spread and straighten a film toward two axial ends during a film feeding process, wherein at least a pair of spiral grooves 1 are formed on an outer surface of the film spreader roll 100 in a mirror image manner, the grooves 1 spirally extend from a middle position of the film spreader roll 100 toward the two ends, respectively, and the spiral directions of the pair of grooves 1 are opposite. As can be seen from fig. 1 and 2, the film spreader roll 100 of the present application is provided with at least one pair of grooves 1 having identical structures and opposite spiral directions in pairs from the middle thereof toward both ends of the axis 200, and thus is defined as a mirror image structure in the present application.

The utility model provides a film roll of stretching, the spiral slot that has adopted the mirror image structure to set up in pairs, when the film roll of stretching figure 1 shows that the arrow direction rotates, the film attached to on its surface will stretch out to the axial both ends and straighten the flattening under the frictional force effect of the slot of screw thread shape, can effectively eliminate and avoid the film to produce the fold when carrying.

Regarding the helical structure of the groove 1, a person skilled in the art can understand this by reference to the thread of the bolt. In fig. 1, at least two ends of the grooves 1 of the film spreader roll 100 are visible, that is, the number of pairs of grooves 1 that can be formed on the outer surface of the film spreader roll 100 of the present application is not limited to one pair, but a plurality of pairs of mirror-image grooves, for example, preferably 2 to 12 pairs of spiral grooves 1, each pair of grooves 1 being arranged in mirror-image with respect to the middle position of the film spreader roll 100, can be formed. Those skilled in the art can understand the structure of the present application with a double-start thread or a multiple-start thread, that is, a plurality of grooves 1 may be provided in parallel on the outer circumferential surface of the film stretching roller 100, and the pitch of each groove 1 is the same, except that the position of the centroid point of each groove 1 from the outer circumferential surface is different. For example, the film spreader roll 100 shown in fig. 1-2 is actually provided with four pairs of mirror-image-arranged grooves 1, and the grooves 1 at the same axial end have the same quadrant spacing on the outer circumferential surface of 360 degrees, both of which are 90 degrees, so that the spacing between adjacent grooves 1 is uniform and equal, both of which are equal to the pitch of one quarter of the grooves 1.

Further, as shown in fig. 3 and 4, which show a schematic cross-sectional view of the film spreader roll of the present application, fig. 3 shows no detail due to the scale, and fig. 4 shows a part of the groove 1 in an enlarged scale. As shown in fig. 3, the film spreader of the present application includes a metal core 300, a rubber layer 400 is wrapped around the metal core 300, and grooves 1 are formed on the outer surface of the rubber layer 400. The metal core shaft 300 can provide supporting strength, the rubber layer 400 can facilitate processing of the groove 1, and the rubber layer 400 can provide large friction force to facilitate stretching and flattening of the film through the friction force.

Fig. 4 shows the structure of the grooves 1. in a preferred embodiment, the width a of the top surface between adjacent grooves 1 is 5-10 mm, the width B of the opening of the groove 1 is 2-5 mm, and the depth C of the groove 1 is 2-5 mm in a cross section through the axis 200 of the film spreader roll 100.

Further, in a cross section passing through the axis 200 of the film spreader roll 100, the first side wall 2 of the groove 100 near the middle of the film spreader roll 100 is perpendicular to the axis 200, and the second side wall 3 away from the middle of the film spreader roll 100 is at an angle of 45 to 75 degrees to the first side wall 2, forming an opening that is narrow at the bottom and wide at the top.

The above-mentioned structure size's of this application groove structure can provide more efficient stretching ability, can avoid the too big film of leading to of stretching power to tear moreover.

It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims

1. A film spreader roll, which is used for spreading and straightening a film to two axial ends in a film conveying process, and is characterized in that at least one pair of spiral grooves (1) are formed on the outer surface of the film spreader roll (100) in a mirror image manner, the grooves (1) spirally and gradually extend from the middle position of the film spreader roll (100) to the two ends respectively, and the spiral directions of the pair of grooves (1) are opposite; in a cross section passing through the axis (200) of the film spreader roll (100), the width A of the top surface between adjacent grooves (1) is 5-10 mm, the width B of the opening of the groove (1) is 2-5 mm, and the depth C of the groove (1) is 2-5 mm.

2. The film spreader roll according to claim 1, wherein, in a cross-section through the axis (200) of the film spreader roll (100), a first side wall (2) of the groove (1) near the middle of the film spreader roll (100) is perpendicular to the axis (200), and a second side wall (3) away from the middle of the film spreader roll (100) forms an angle of 45-75 degrees with the first side wall (2), forming an opening that is narrow at the bottom and wide at the top.

3. The film spreader roll according to claim 1, wherein the outer surface of the film spreader roll (100) is formed with 2-12 pairs of spiral grooves (1), each pair of grooves (1) being arranged in a mirror image with respect to a middle position of the film spreader roll (100).