CN211998103U - Bilateral cutting device and inflation film manufacturing machine - Google Patents

Abstract

The utility model provides a bilateral cutting device and inflation film manufacturing machine, belong to the plastic film production technology field, including the track, the blade holder, guide board and cutting knife, the track is used for setting up on fixed base member, the blade holder is located on the track and can along the track removal, the quantity of blade holder is two and is located the outside at the fifty percent discount border of flat double-deck film respectively, guide board first end links firmly on the blade holder, the second end stretches into the inside of double-deck film, the second end pastes closely and outwards strains double-deck film with the inner wall of double-deck film, the second end is equipped with rolling member, rolling member and the membrance body roll contact at fifty percent discount border, 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 membrance body that comes via; the utility model provides a bilateral cutting device, when can solving current cutting device and cut double-deck film's fifty percent discount border, the unsatisfactory and easy problem of damaging the membrane body of cutting effect.

Description

Bilateral 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 bilateral 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 the film still is the double-deck integral structure that both sides border is linked together at this moment, and the border that is equivalent to two slice films coincides from top to bottom and passes through both sides links as an organic whole, and two folding borders are formed to the both sides border after linking as an organic whole. 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 bilateral cutting is to cut the two folded edges at the same time to form two sheet films in a flat 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 bilateral 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 bilateral cutting device comprises a track, a cutter holder, a guide plate and a cutting knife;

the rail is used for being arranged on the fixed base body;

the tool apron is arranged on the rail and can move along the rail, and the number of the tool apron is two and the two tool apron are respectively positioned on the outer side of the folded edge of the flat double-layer film;

the first end of the guide plate is fixedly connected to the cutter holder, the second end of the guide plate extends into the 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, and a rolling part is arranged at the second end of the guide plate and is in rolling contact with the film body at the folded edge;

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, orbital quantity is two, be equipped with a plurality of sheaves on the blade holder, the blade holder passes through the sheave with track roll joint is followed orbital length direction removes, the blade holder is connected with the balancing weight through the rope, the blade holder is in the pulling force that the balancing weight produced down have to the trend that the track both ends removed.

As another embodiment of this application, the orbital both ends have set firmly the fixed pulley, rope one end is connected on the blade holder, and the other end is walked around hang down and be connected with behind the fixed pulley the balancing weight.

The utility model provides a bilateral 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 both sides, 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, cutting effect has.

The utility model also provides a inflation film manufacturing machine, inflation film manufacturing machine includes foretell bilateral 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 structural view of a bilateral 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 bilateral cutting device according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the tool holder shown in FIG. 1 at C-C.

In the figure: 1. a track; 2. a tool apron; 21. an upper sheave; 22. a lower sheave; 23. a middle vertical plate; 24. jacking the bolt; 3. a guide plate; 31. a first end; 32. a second end; 321. an inclined plane part; 33. a cutter groove; 34. briquetting; 4. cutting; 5. fixing the substrate; 6. a double-layer film; 7. a rolling member; 71. a roller; 72. a sub-wheel; 73. a connecting arm; 81. a rope; 82. a balancing weight; 83. and a fixed pulley.

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, a bilateral cutting device according to the present invention will now be described. The bilateral cutting device comprises a track 1, a cutter holder 2, a guide plate 3 and a cutting knife 4; the rail 1 is used for being arranged on a fixed base body 5; the tool apron 2 is arranged on the track 1 and can move along the track 1, and the number of the tool apron 2 is two and is respectively positioned on the outer side of the folded edge of the flat double-layer film 6; the first end 31 of the guide plate 3 is fixedly connected to the tool apron 2, the second end 32 extends into the double-layer thin film 6, the second end 32 is tightly attached to the inner wall of the double-layer thin film 6 and outwards tensions the double-layer thin film 6, the second end 32 is provided with a rolling part 7, and the rolling part 7 is in rolling contact with the film body at the folded edge; the cutting knife 4 is fixedly arranged on the guide plate 3 and is positioned at the downstream of the rolling part 7, and the cutting knife 4 is used for cutting the membrane body conveyed by the rolling part 7.

The utility model provides a bilateral cutting device, compared with the prior art, be equipped with the corpus membranacea of guide board 3 to double-layer film 6 and guide, guide board 3 stretches into double-layer film 6's inside from both sides, it is tight and outside taut to paste with double-layer film 6's inner wall, for tightening state when the corpus membranacea of assurance fifty percent discount border department reachs the cutting edge of cutting knife 4, the cutting effect is good, and be equipped with rolling part 7 on the guide board 3, rolling part 7 can with double-layer film 6's corpus membranacea rolling contact, compare the friction joint among the prior art, contact pattern has been improved, when making the corpus membranacea of double-layer film 6 fifty percent discount border department can be guided to cutting knife 4 smoothly, the corpus membranacea can not receive the damage, cutting effect has been optimized.

Specifically, the fixing base body 5 can be two support plates fixedly connected to the frame of the winding device, and two ends of the track 1 are respectively fixedly connected with the support plates; the double-layer film 6 is generally conveyed from top to bottom when passing through the bilateral cutting device, so that the guide plate 3 and the cutting blade 4 are both arranged upwards in the application, and the arrow in fig. 1 indicates the conveying direction of the double-layer film 6; two blade holders 2 mirror image settings all are equipped with guide board 3 and cutting knife 4 on every blade holder 2, cut two fifty percent discount edges to double-deck film 6 respectively. It should be noted that, in order to enable the second end 32 of the guide plate 3 to pull the double-layer film 6 outwards, the position of the tool apron 2 may be fixed, or a pulling force towards two sides may be applied to the tool apron 2; the cutting device is clamped between two layers of double-layer films 6 when in work, a part A in figure 1 is a view after one layer of film is cut open, the guide plate 3 and the cutting knife 4 can be seen, and the other side is not cut open, only one end of the guide plate 3 connected with the knife holder 2 and the tail end of the cutting knife 4 can be seen.

As a specific implementation manner of the present invention, please refer to fig. 3, the rolling member 7 is a roller, the roller is rotated by the roller 71 and disposed at the edge of the guiding plate 3, 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 6 is stretched horizontally, 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 4 is difficult to control through the guide plate 3, 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 3 is smaller than that of the roller, and the double-layer film 6 is stretched so as not to contact with the main body of the guide plate 3 to generate friction, thereby protecting the film body from being damaged, as shown in fig. 3. In fig. 3, for the sake of clarity of illustration, the double-layer film 6 is spaced from the roller, and in fact, the double-layer film 6 is attached to the rim and the end face of the roller.

As a specific embodiment of the bilateral cutting device of the present invention, please refer to fig. 3, the roller comprises at least two coaxial sub-wheels 72, and the sub-wheels 72 are all connected to the roller 71 and rotate around the roller 71. 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 6; 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 utility model provides a bilateral cutting device, please refer to fig. 3, the gyro wheel passes through the linking arm 73 and sets up on guide board 3, linking arm 73 is located between the sub-wheel 72, the one end and the roller bearing 71 of linking arm 73 are articulated, the other end is connected on guide board 3, realized being connected of gyro wheel and guide board 3, can make the thickness of sub-wheel 72 great simultaneously to its rim has great area of contact with double-deck film 6, can carry out effectual side direction support to the lamina membranacea. Specifically, the connecting arm 73 is fixedly connected to the end connected to the guide plate 3.

As a specific embodiment of the present invention, please refer to fig. 3, the number of the sub-wheels 72 is two, and the outer wheel edge of the sub-wheels 72 is provided with an arc-shaped chamfer to avoid the right-angle wheel edge from damaging the film body of the double-layer film 6.

As a specific embodiment of the present invention, please refer to fig. 4, the second end 32 faces the direction from the double-layered thin film 6, the second end 32 is provided with an inclined plane portion 321, and the inclined plane portion 321 is used to separate the overlapped film body of the double-layered thin film 6 and guide the film body to contact with the roller. The inclined surface 321 functions to gradually separate the two film bodies attached to the two thin films 6. The top end of the inclined plane part 321 passively extends into and separates two layers of membrane bodies under the action of the conveying force; the thickness of the top end of the inclined plane part 321 is the smallest, and at this time, the distance between the film bodies is also smaller, and as the film bodies extend to one side of the roller, the thickness of the inclined plane part 321 is gradually increased, and the distance between the two film bodies is also 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 321, the film bodies on the side surfaces are in rolling contact with the roller wheel, and the film bodies which are originally attached to each other are suspended under the action of the tightening force. Specifically, the edges of the inclined plane part 321 contacting the double-layer thin film 6 are provided with round chamfers, so that the film body is protected from being damaged. The inclined surface 321 can gradually separate the two side films of the double-layer thin film 6, 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 bilateral cutting device provided by the present invention, please refer to fig. 4, the guiding plate 3 is L-shaped, the roller is disposed at the inner side edge of the guiding plate 3, and the cutting knife 4 is disposed at the corner of the inner side edge of the guiding plate 3. Specifically, a cutter groove 33 is arranged at the corner of the guide plate 3, the cutter 4 is sheet-shaped, and is fixed by a pressing block 34 after the cutter groove 33 is placed; the knife slot 33 is also provided with a small section of slot at one end without the pressing block 34, so that the end part of the cutting knife 4 can be inserted into the slot to limit the cutting knife 4, the cutting knife 4 can be fully fixed, and meanwhile, the end of the cutting knife 4 which is not pressed by the pressing block 34 can be prevented from tilting to influence the cutting quality; the number of the rollers is three, the rollers are tightly connected with the inclined plane part 321, the shape of the film body at the edge is folded after the two layers of film bodies of the double-layer film 6 are separated, the film body is in contact with the cutting edge of the cutting knife 4 in a tightened and flat state, cutting is achieved, and the cutting effect is good.

As the utility model provides a bilateral cutting device's a specific implementation way, please refer to fig. 1 and fig. 5, track 1's quantity is two, be equipped with a plurality of sheaves on the blade holder 2, blade holder 2 rolls the joint and removes along track 1's length direction through sheave and track 1, blade holder 2 is connected with balancing weight 82 through rope 81, blade holder 2 has the trend that removes to track 1 both ends under the pulling force that balancing weight 82 produced, thereby make the inner wall that second end 32 of guide board 3 can outwards take up double-layer film 6, the gyro wheel closely laminates with the diaphragm body. The second end 32 of the guide plate 3 is sleeved inside the double-layer film 6, and the double-layer film 6 generates a resistance force for preventing the tool apron 2 from moving towards the two ends of the track 1, and the resistance force and the tension force of the rope 81 are mutually offset, so that the tool apron 2 can keep still on the track 1.

Specifically, the grooved pulleys include two groups of upper grooved pulleys 21 and a group of lower grooved pulleys 22 which are distributed in a triangular shape when viewed from the side, and are connected to an intermediate vertical plate 23 through a wheel shaft; the difference is that, go up sheave 21's shaft and middle riser 23 fixed connection, in the spout on middle riser 23 was worn to establish by lower sheave 22's shaft, the bottom surface of middle riser 23 was equipped with top tight bolt 24, can control down sheave 22 and reciprocate, realizes the installation of blade holder 2 and track 1. During installation, the jacking bolt 24 is loosened, the lower grooved wheel 22 has a space moving downwards, and after the upper grooved wheel 21 is placed on the track 1, the jacking bolt 24 starts to be screwed until the lower grooved wheel 22 is tightly attached to the bottom surface of the track 1. In particular, the guide plate 3 (not shown in fig. 5) is fixed to the intermediate riser 23. The structure composition of the track 1 and the tool apron 2 provided by the embodiment is simple and stable, and the tool apron 2 can conveniently move along the track 1; simultaneously, through the pulling force that balancing weight 82 produced, the inner wall of double-deck film 6 can outwards be strained to the gyro wheel, realizes the cutting at fifty percent discount border.

As a specific embodiment of the bilateral cutting device of the present invention, please refer to fig. 1, the fixed pulley 83 is fixedly disposed at two ends of the track 1, one end of the rope 81 is connected to the knife holder 2, and the other end of the rope droops and is connected to the weight block 82 after passing around the fixed pulley 83. Specifically, the fixed pulley 83 is fixed to the fixed base 5 by a bracket.

When the bilateral cutting device provided by the utility model works, the second ends 32 of the two guide plates 3 extend into the double-layer film 6, the roller wheel leans against the inner wall of the double-layer film 6 tightly by means of the pulling force generated by the balancing weight 82, and the roller wheel has outward (two sides) pulling force on the double-layer film 6; after the originally attached film bodies of the double-layer film 6 are separated by the inclined surface part 321, the film bodies on the side surfaces reach the blade of the cutting knife 4 through the roller; the film body is in a tightening state and is relatively flat when reaching the cutting edge, and cutting is realized under the action of conveying force.

The utility model also provides a inflation film manufacturing machine. This inflation film manufacturing machine includes foretell bilateral cutting device, and consequently cutting effect is good and can not harm the film when cutting double-deck film 6'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 (10)

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

a rail for being disposed on the fixed base;

the tool apron is arranged on the rail and can move along the rail, and the number of the tool apron is two and the two tool apron are respectively positioned on the outer side of the folded edge of the flat double-layer film;

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

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 double-sided cutting device according to claim 1, wherein the rolling member is a roller rotatably disposed at an edge of the guide plate by a roller, and the roller has a thickness of not more than 5 mm.

3. The bilateral cutting device of claim 2 wherein the roller comprises at least two coaxial sub-wheels, each of the sub-wheels being coupled to and rotatable about the roller.

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

5. A bilateral cutting device as claimed in claim 3 wherein the number of said sub-wheels is two, the outside wheel edges of said sub-wheels being provided with arcuate chamfers.

6. A double-sided cutting device according to any one of claims 2 to 5, wherein said second end faces in a direction in which said double-layered film is transferred, said second end being provided with a slope portion for separating a film body overlapped on the upper and lower sides of said double-layered film and guiding it to contact said roller.

7. The bilateral cutting device of claim 6 wherein the guide plate is L-shaped, the roller is disposed at an inside edge of the guide plate, and the cutter is disposed at a corner of the inside edge of the guide plate.

8. The bilateral cutting device of any one of claims 1 to 5 wherein the number of the rails is two, the blade holder is provided with a plurality of grooved wheels, the blade holder is in rolling engagement with the rails through the grooved wheels and moves along the length direction of the rails, the blade holder is connected with a weight block through a rope, and the blade holder has a tendency to move towards the two ends of the rails under a pulling force generated by the weight block.

9. The bilateral cutting device as claimed in claim 8 wherein the rail has fixed pulleys fixed to both ends thereof, and the rope has one end connected to the blade holder and the other end drooping around the fixed pulleys and connected to the weight block.

10. A film blowing machine characterized by comprising the bilateral cutting device of any one of claims 1 to 9.

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