CN211594484U

CN211594484U - Unilateral cutting device and inflation film manufacturing machine

Info

Publication number: CN211594484U
Application number: CN201922446562.XU
Authority: CN
Inventors: 张坡; 张金良
Original assignee: Xiongxian Xinshengda Plastic Packaging Co ltd
Current assignee: Xiongxian Xinshengda Plastic Packaging Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a unilateral cutting device and inflation film manufacturing machine belongs to plastic film production technical field, including the knife rest, guide board and cutting knife, the knife rest is used for setting up on fixed base member, guide board first end is connected on the knife rest, the second end stretches into inside the flat double-deck film, the second end pastes tightly and outwards strains the double-deck film with the inner wall of double-deck film, the second end is equipped with rolling member, rolling member and the membrane body roll contact of the fifty percent discount border department of double-deck film, the cutting knife sets firmly on the guide board and is located the low reaches of rolling member, the cutting knife is used for cutting the membrane body that comes via rolling member conveying; the utility model provides an unilateral cutting device can solve current cutting device when cutting double-deck film's fifty percent discount border, and the unsatisfactory and easy problem of damaging the membrane body of cutting effect.

Description

Unilateral cutting device and inflation film manufacturing machine

Technical Field

The utility model belongs to the technical field of the plastic film production, more specifically say, relate to a unilateral cutting device and inflation film manufacturing machine.

Background

The film blowing machine is plastic film preparation equipment capable of heating and melting plastic particles and then blowing the plastic particles into a cylindrical film. And the prepared cylindrical film is pressed into a flat shape and then is conveyed to a winding roller through a traction roller for winding to form a product. But at the moment, the film still has a double-layer integral structure with two side edges connected together, namely two sheet films are overlapped up and down and connected into a whole through the two side edges, and the two side edges are connected into a whole to form two folded edges. In order to obtain a sheet-shaped film product, a cutting knife needs to be arranged between the traction roller and the winding roller to cut the folded edge. The single-side cutting is to cut one of the two folded edges to form a sheet-like film in a folded state. Cutting knife among the prior art is because of unable effective guide, can't tighten when the membrane body of fifty percent discount border department reachs cutting edge department, leads to the cutting effect unsatisfactory, causes the damage to the membrane body easily when cutting knife guides the membrane body moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a unilateral cutting device and inflation film manufacturing machine aims at solving when current cutting device cuts double-deck film's fifty percent discount border, and the unsatisfactory and easy problem of damaging the membrane body of cutting effect.

In order to achieve the above object, the utility model adopts the following technical scheme: the unilateral cutting device comprises a tool rest, a guide plate and a cutting knife;

the tool rest is arranged on the fixed base body;

the first end of the guide plate is connected to the tool rest, the second end of the guide plate extends into the flat double-layer thin film, the second end of the guide plate is tightly attached to the inner wall of the double-layer thin film and outwards tensions the double-layer thin film, the second end of the guide plate is provided with a rolling part, and the rolling part is in rolling contact with a film body at the folding edge of the double-layer thin film;

the cutting knife is fixedly arranged on the guide plate and is positioned at the downstream of the rolling part, and the cutting knife is used for cutting the film body conveyed by the rolling part.

As another embodiment of this application, rolling element is the gyro wheel, the gyro wheel passes through the roller bearing and rotates the setting and be in the border of guide board, the thickness of gyro wheel is not more than 5 mm.

As another embodiment of the present application, the roller includes at least two coaxial sub-wheels, and the sub-wheels are connected to the roller and rotate around the roller.

As another embodiment of this application, the gyro wheel passes through the linking arm setting and is in on the guide board, the linking arm is located between the son wheel, the one end of linking arm with the roller bearing is articulated, and the other end is connected on the guide board.

As another embodiment of the application, the number of the sub-wheels is two, and the outer side wheel edge of each sub-wheel is provided with an arc-shaped chamfer.

As another embodiment of the present application, the second end faces a direction from the double-layer thin film, and the second end is provided with an inclined surface portion for separating the film bodies of the double-layer thin film overlapped up and down and guiding the film bodies to contact with the roller.

As another embodiment of this application, the guide board is L shape, the gyro wheel sets up the inboard border of guide board, the cutting knife sets up the corner at the inboard border of guide board.

As another embodiment of this application, the knife rest include with the perpendicular stretching rod of direction of transfer of double-deck film, the guide board sets up stretching rod leans on tightly the one end of double-deck film, stretching rod is adjustable along self length direction's position.

As another embodiment of the present application, the tool holder further includes a cantilever fixedly disposed on the fixed base, the stretching rod is disposed on the cantilever in a penetrating manner, and a tightening bolt for tightening or loosening the stretching rod is disposed on the cantilever.

The utility model provides an unilateral cutting device, compared with the prior art, be equipped with the guide board and guide the lamina membranacea of double-deck film, the guide board stretches into the inside of double-deck film from the outside, it is tight and outside taut to paste with the inner wall of double-deck film, for the state of tightening when the lamina membranacea of assurance fifty percent discount border department reachs the cutting edge of cutting knife, the cutting effect is good, and be equipped with rolling part on the guide board, rolling part can with the lamina membranacea rolling contact of double-deck film, compare the friction joint among the prior art, contact pattern has been improved, when making the lamina membranacea of double-deck film fifty percent discount border department can be guided to the cutting knife smoothly, the lamina membranacea can not receive the damage, the cutting effect.

The utility model also provides a inflation film manufacturing machine, inflation film manufacturing machine includes foretell unilateral cutting device, and cutting effect is good and can not harm the film when consequently cutting double-deck film's fifty percent discount border.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic top view of a single-side cutting device according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

fig. 4 is a schematic structural diagram of a guide plate in the single-edge cutting device according to an embodiment of the present invention.

In the figure: 1. a tool holder; 11. a horizontally extending rod; 12. a cantilever; 121. jacking the bolt; 2. a guide plate; 21. a first end; 22. a second end; 221. an inclined plane part; 23. a cutter groove; 24. briquetting; 3. cutting; 4. fixing the substrate; 41. a wind-up roll; 5. a double-layer film; 6. a rolling member; 61. a roller; 62. a sub-wheel; 63. a connecting arm.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2 together, the single-side cutting device of the present invention will now be described. The unilateral cutting device comprises a tool rest 1, a guide plate 2 and a cutting knife 3; the tool rest 1 is arranged on the fixed base body 4; the first end 21 of the guide plate 2 is connected to the tool rest 1, the second end 22 extends into the flat double-layer thin film 5, the second end 22 is tightly attached to the inner wall of the double-layer thin film 5 and outwards tensions the double-layer thin film 5, the second end 22 is provided with a rolling part 6, and the rolling part 6 is in rolling contact with a film body at the folding edge of the double-layer thin film 5; the cutting knife 3 is fixedly arranged on the guide plate 2 and is positioned at the downstream of the rolling part 6, and the cutting knife 3 is used for cutting the membrane body conveyed by the rolling part 6.

In order to make the film at the folded edge reach the cutting edge of the cutter in a stretched state, a guide member is generally provided in front of the cutter to guide the film. The guide member extends into the flat double-layer film, is adhered to the inner wall of the film, and tensions the film to the outside. The conventional guide member easily damages the film.

The utility model provides an unilateral cutting device, compared with the prior art, be equipped with the corpus membranacea of guide board 2 to double-layer film 5 and guide, guide board 2 stretches into double-layer film 5's inside from the outside, it is tight and outside taut to paste with double-layer film 5's inner wall, for tightening state when guaranteeing the corpus membranacea of fifty percent discount border department reachs the cutting edge of cutting knife 3, the cutting effect is good, and be equipped with rolling part 6 on the guide board 2, rolling part 6 can with double-layer film 5's corpus membranacea rolling contact, compare the friction joint among the prior art, the contact pattern has been improved, when making the corpus membranacea of double-layer film 5 fifty percent discount border department can be guided to cutting knife 3 smoothly, the corpus membranacea can not receive the damage, the cutting effect has been optimized.

Fig. 1 is a plan view in which arrows indicate the film transfer direction, and the fixed substrate 4 is generally a frame of a winding device on which a winding roller 41 is provided; the second end 22 of the above-mentioned guiding plate 2 pulls the double-layered film 5 outwards, which in fig. 1 means to the left side pulls the double-layered film 5. The cutting device is clamped between an upper film and a lower film when in work, and the part A in figure 1 is a view after the upper film is cut open.

As a specific implementation manner of the single-edge cutting device provided by the present invention, please refer to fig. 3, the rolling component 6 is a roller, the roller is rotated and set at the edge of the guiding plate 2 by the roller 61, and the thickness of the roller is not greater than 5 mm. The thickness of the roller, i.e. the distance by which the double film 5 is stretched up and down, is preferably smaller. If the spreading distance is too large, the state of the membrane body when reaching the cutting edge of the cutting knife 3 is difficult to control through the guide plate 2, so that the membrane body is not in a tight state at the moment of being cut, and the cutting effect is seriously influenced. The smaller the opening distance is, the more accurate the film body can be controlled to be in the instantaneous cutting state, thereby ensuring the better cutting effect. However, too small a thickness of the roller greatly increases the difficulty of manufacturing the roller. Therefore, the cutting effect and the processing and manufacturing difficulty of the roller are comprehensively considered, the thickness of the roller is not more than 5mm, and preferably, the thickness of the roller is 4 mm.

Specifically, the thickness of the main body of the guide plate 2 is smaller than that of the roller, and the double-layer thin film 5 is stretched out and then does not contact with the main body of the guide plate 2 to generate friction, so that the film body is protected from being damaged, as shown in fig. 3. In fig. 3, for the sake of clarity of illustration, the double-layer film 5 has a gap with the roller, and in fact, the double-layer film 5 is attached to the rim and the end face of the roller.

As a specific embodiment of the single-side cutting device of the present invention, please refer to fig. 3, the roller includes at least two coaxial sub-wheels 62, and the sub-wheels 62 are all connected to the roller 61 and rotate around the roller 61. The specific structure composition of the roller provided in the embodiment can ensure that the roller has smaller thickness, and the end face of the roller is positioned at the outermost side and can be attached to the inner wall of the double-layer film 5; the end face of the roller is easy to manufacture into a plane, so that the film body cannot be scratched by a bulge, and the film body is prevented from being damaged.

As a specific implementation manner of the unilateral cutting device provided by the utility model, please refer to fig. 3, the gyro wheel passes through the linking arm 63 and sets up on guide board 2, linking arm 63 is located between son wheel 62, the one end and the roller bearing 61 of linking arm 63 are articulated, the other end is connected on guide board 2, realized being connected of gyro wheel and guide board 2, can make the thickness of son wheel 62 great simultaneously to its rim has great area of contact with double-deck film 5, can carry out effectual side direction support to the lamina membranacea. Specifically, the connecting arm 63 is fixedly connected to the end of the guide plate 2.

As a specific embodiment of the single-edge cutting device provided in the present invention, please refer to fig. 3, the number of the sub-wheels 62 is two, and the outer wheel edge of the sub-wheels 62 is provided with an arc-shaped chamfer to avoid the right-angle wheel edge from damaging the film body of the double-layer film 5.

As a specific embodiment of the single-edge cutting device of the present invention, please refer to fig. 4, the second end 22 faces the direction from the double-layer film 5, the second end 22 is provided with an inclined plane portion 221, and the inclined plane portion 221 is used to separate the overlapped film bodies of the double-layer film 5 and guide the film bodies to contact with the roller. The inclined surface 221 serves to gradually separate the two film bodies to which the two thin films 5 are attached. The top end of the inclined plane part 221 passively extends into and separates the two film bodies under the action of the conveying force; the thickness of the top end of the inclined plane part 221 is the smallest, and at this time, the distance between the film bodies is smaller, and as the film bodies extend to one side of the roller, the thickness of the inclined plane part 221 is gradually increased, and the distance between the two film bodies is increased until the distance is increased to be the same as the thickness of the roller. After the film body is separated from the contact with the inclined plane part 221, the film body on the side surface is in rolling contact with the roller, and the film bodies above and below are suspended under the action of the tightening force. Specifically, the edges of the inclined plane part 221 contacting the double-layer thin film 5 are provided with round chamfers, so that the film body is protected from being damaged. The inclined surface 221 can gradually separate the two side films attached to the double-layer thin film 5, rather than abruptly separate, and prevent the films from being damaged due to too severe state change during separation.

As a specific implementation manner of the unilateral cutting device provided by the present invention, please refer to fig. 4, the guiding plate 2 is L-shaped, the roller is disposed at the inner side edge of the guiding plate 2, and the cutting knife 3 is disposed at the corner of the inner side edge of the guiding plate 2. Specifically, a cutter groove 23 is formed in the corner of the guide plate 2, the cutter 3 is sheet-shaped, and is fixed through a pressing block 24 after the cutter groove 23 is placed; the cutter groove 23 is also provided with a small section of slot at one end without the pressing block 24, so that the end part of the cutting knife 3 can be inserted into the slot to limit the cutting knife 3, the cutting knife 3 can be fully fixed, and meanwhile, the phenomenon that the end of the cutting knife 3 which is not pressed by the pressing block 24 is tilted to influence the cutting quality can be prevented; the number of the rollers is three, the rollers are tightly connected with the inclined plane part 221, the shape of the film body at the edge is folded after the two layers of film bodies of the double-layer film 5 are separated, the film body is in contact with the cutting edge of the cutting knife 3 in a tightened and flat state, cutting is achieved, and the cutting effect is good.

As a specific implementation manner of the unilateral cutting device provided by the present invention, please refer to fig. 1, the knife rest 1 includes a horizontal extension rod 11 perpendicular to the conveying direction of the double-layer film 5, the guide plate 2 is disposed at one end of the horizontal extension rod 11 close to the double-layer film 5, the horizontal extension rod 11 is adjustable along the length direction thereof, so as to adjust the position of the guide plate 2, the position of the cutting knife 3 and the roller, and adapt to the double-layer film 5 with different widths. Specifically, the one end that level and stretch pole 11 and guide board 2 are connected is fixed connection, can be connected as an organic whole, also can be the reassembling type connection.

As a specific embodiment of the single-edge cutting device provided in the present invention, please refer to fig. 1, the tool holder 1 further includes a cantilever 12 fixedly disposed on the fixed base 4, the horizontal extension rod 11 is disposed on the cantilever 12, and the cantilever 12 is provided with a tightening bolt 121 for tightening or loosening the horizontal extension rod 11. When the width of double-layer film 5 changes, need adjust the position of level and stretch pole 11, loosen tightening bolt 121, level and stretch pole 11 can move about, adjust the completion back, screw up tightening bolt 121, make level and stretch pole 11 fixed can, convenient high efficiency.

When the single-side cutting device provided by the utility model works, please refer to fig. 1, the guide plate 2 extends into the double-layer film 5, and the roller is tightly attached to the inner wall of the double-layer film 5 and is pulled to the left side by adjusting the position of the horizontal extension rod 11; the two layers of film bodies, which are attached to the upper layer and the lower layer of the double-layer film 5, are gradually stretched under the action of the inclined plane part 221 and then are in rolling contact with the roller, and the film bodies at the folded edge of the double-layer film 5 reach the cutting edge of the cutting knife 3 through the roller in a tightened and flat state to realize cutting.

The utility model also provides a inflation film manufacturing machine. This inflation film manufacturing machine includes foretell unilateral cutting device, consequently the cutting effect is good and can not harm the film when cutting double-deck film 5's fifty percent discount border.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Unilateral cutting device, its characterized in that includes:

the tool rest is arranged on the fixed base body;

the guide plate is connected to the tool rest at a first end, a second end extends into the flat double-layer thin film, the second end is tightly attached to the inner wall of the double-layer thin film and outwards tensions the double-layer thin film, and a rolling part is arranged at the second end and is in rolling contact with a film body at the folding edge of the double-layer thin film;

and the cutting knife is fixedly arranged on the guide plate and positioned at the downstream of the rolling part, and the cutting knife is used for cutting the film body conveyed by the rolling part.

2. The single-edge cutting device according to claim 1, wherein the rolling member is a roller, the roller is rotatably disposed at the edge of the guide plate through a roller shaft, and the thickness of the roller is not more than 5 mm.

3. The single-edge cutting device according to claim 2, wherein said roller comprises at least two coaxial sub-wheels, each of said sub-wheels being connected to and rotatable about said roller.

4. The single-edge cutting device according to claim 3, wherein the roller is arranged on the guide plate through a connecting arm, the connecting arm is positioned between the sub-wheels, one end of the connecting arm is hinged with the roller, and the other end of the connecting arm is connected to the guide plate.

5. The single-edge cutting device according to claim 3, wherein the number of the sub-wheels is two, and the outer wheel edge of the sub-wheel is provided with an arc-shaped chamfer.

6. The single-edge cutting device according to any one of claims 2 to 5, wherein the second end faces a direction in which the double-layered film is transferred, and the second end is provided with a slope portion for separating the film bodies overlapped on the double-layered film and guiding them to contact the roller.

7. The single-sided cutting device of claim 6, wherein the guide plate is L-shaped, the roller is disposed at an inner side edge of the guide plate, and the cutting knife is disposed at a corner of the inner side edge of the guide plate.

8. The single-edge cutting device according to any one of claims 1 to 5, wherein the tool holder comprises a stretching rod perpendicular to the conveying direction of the double-layer film, the guide plate is arranged at one end of the stretching rod close to the double-layer film, and the position of the stretching rod along the length direction of the stretching rod is adjustable.

9. The single-edge cutting device as claimed in claim 8, wherein the tool holder further comprises a cantilever fixed on the fixed base, the level extension rod is arranged on the cantilever in a penetrating manner, and a tightening bolt for tightening or loosening the level extension rod is arranged on the cantilever.

10. Film blowing machine, characterized in that it comprises a single-edge cutting device according to any one of claims 1 to 9.