Film unreeling machine

Abstract

The utility model discloses a thin film unreeling machine which comprises a machine frame. The feeding roller is rotatably arranged on the rack so as to be suitable for conveying a thin film; the swing rods are hinged to the two sides of the rack respectively; rotating shafts are movably arranged at the two ends of the roller respectively, the ends, away from the roller, of the rotating shafts are connected with the corresponding swing rods so that the roller and the swing rods can be movably connected together, and therefore the roller can press the thin film under the action of gravity. The film pressing device is simple in structure, and the film is pressed by the roller under the action of gravity in the outward conveying process of the film, so that the defects of wrinkles, stripes, creases and the like of the film are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a film uncoiler. Background Art

[0002] In the prior art, the working process of most bag making machines is to convey raw materials, namely two layers of plastic films to be heat-sealed, to a silica gel conveyor belt through conveying rollers, and then cut the plastic films by starting a hot cutting knife above the silica gel conveyor belt while melting and heat-sealing the cut-off parts together, and then form a packaging bag after cooling through a cooling plate. Its defect is that during the conveying process of the film, the two sides of the film will be uneven due to unbalanced tension, resulting in defects such as wrinkles, stripes, creases, etc., and even making the film unable to stably complete the specified process. Summary of the Invention

[0003] The utility model aims to solve at least one of the problems existing in the related prior art to a certain extent. For this purpose, the utility model provides a film uncoiler, which has a simple structure. During the process of outward conveying of the film, the roller presses the film under the action of gravity, so as to avoid defects such as wrinkles, stripes, creases, etc. on the film.

[0004] The above object is achieved by the following technical solutions:[[]]END]]

[0005] A film uncoiler, comprising:

[0006] A frame;

[0007] A feeding roller rotatably arranged on the frame for conveying the film;

[0008] A swing rod respectively hinged on both sides of the frame;

[0009] A roller, with rotating shafts respectively movably arranged at both ends of the roller. The rotating shafts are connected to the corresponding swing rods at the ends far away from the roller, so that the roller and the swing rod are movably connected together, and thus the roller presses the film under the action of gravity.

[0010] In some embodiments, a driving motor is further included. The driving motors are respectively fixedly arranged on both sides of the roller, and the output shafts of the driving motors are connected to the swing rods through the rotating shafts, so that the driving motors drive the roller to rotate.

[0011] In some embodiments, a hollow accommodating cavity is defined in the roller. The driving motors are arranged at both ends of the accommodating cavity. Through holes are respectively formed at both ends of the roller, and the rotating shafts are connected to the swing rods after passing through the through holes at the ends far away from the driving motors.

[0012] In some embodiments, a cross bar is provided at one end of the frame away from the feeding roller. An installation hole is formed in the swing rod, and the cross bar passes through the installation hole so that the swing rod is rotatably connected to the cross bar.

[0013] In some embodiments, it further includes a bearing. The bearing is arranged on the cross bar and sleeved in the installation hole.

[0014] In some embodiments, in the vertical direction, the installation height of the cross bar is higher than that of the feeding roller.

[0015] In some embodiments, it further includes an anti-slip member. The anti-slip member is arranged on the outer surface of the roller.

[0016] In some embodiments, the anti-slip member is made of rubber or silica gel.

[0017] In some embodiments, it further includes a mounting member. A through hole is correspondingly formed in the swing rod, and the rotating shaft and the swing rod are mounted together through the mounting member.

[0018] In some embodiments, it further includes a backing plate. The backing plate is arranged on the outer side wall of the swing rod. A connection hole is formed in the backing plate. The rotating shaft passes through the side wall of the roller, the through hole, and the connection hole in sequence and then is connected to the mounting member so that the rotating shaft is connected to the swing rod.

[0019] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0020] 1. The film unwinding machine of the present utility model has a simple structure. During the process of outward transportation of the film, the roller presses the film through the action of gravity, so as to avoid defects such as wrinkles, stripes, and creases on the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the film unwinding machine in an embodiment of the present utility model;

[0023] Figure 2 It is an exploded schematic diagram of a partial structure of the film unwinding machine in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will, in conjunction with the embodiments of the present utility model, clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of the technical solutions claimed by the present utility model.

[0026] Embodiment:

[0027] As Figure 1 and 2 shown, the present embodiment provides a film unwinder, comprising:

[0028] A frame 1;

[0029] A feeding roller 2, which is rotatably arranged on the frame 1 to be adapted to convey the film;

[0030] A swing rod 3, which is respectively hinged on both sides of the frame 1;

[0031] A roller 4, on both ends of which rotating shafts 5 are respectively movably arranged. The rotating shafts 5 are connected to the corresponding swing rods 3 at the ends far from the roller 4 so that the roller 4 and the swing rods 3 are movably connected together, thereby enabling the roller 4 to press the film under the action of gravity.

[0032] In the present embodiment, the feeding roller 2 is arranged at the lower position in front of the frame 1, and the film is wound on the feeding roller 2. The feeding roller 2 is rotatably arranged on the frame 1. The film is pulled out for unwinding through the action of a film pulling machine, thereby driving the feeding roller 2 to rotate synchronously through the film, and further conveying the film outwards through the rotation of the feeding roller 2. One swing rod 3 is respectively rotatably arranged on the left and right sides of the frame 1. The swing rod 3 is movably connected to the roller 4 at the end far from the frame 1, so that both sides of the roller 4 are movably connected to the frame 1 through the corresponding swing rods 3. When the roller 4 is under the action of its own gravity, the roller 4 presses the film, thereby flattening the film on the feeding roller 2. Its structure is simple. During the process of the film being conveyed outwards, the roller 4 presses the film under the action of gravity, thereby preventing the film from having defects such as wrinkles, stripes, creases, etc.

[0033] Further, it further includes a driving motor which is fixedly arranged on both sides of the roller 4 respectively. The output shaft of the driving motor is connected to the swing rod 3 through a rotating shaft 5 so that the driving motor drives the roller 4 to make a rotating motion.

[0034] Specifically, a hollow accommodating cavity is defined in the roller 4. The driving motor is arranged at both ends of the accommodating cavity. Through holes are respectively opened at both ends of the roller 4. The rotating shaft 5 passes through the through hole at the end far from the driving motor and is then connected to the swing rod 3.

[0035] Preferably, a cross bar 11 is arranged at one end of the frame 1 far from the feeding roller 2. An installation hole 32 is opened on the swing rod 3. The cross bar 11 passes through the installation hole 32 so that the swing rod 3 is rotatably connected to the cross bar 11.

[0036] Further, it further includes a bearing 6. The bearing 6 is arranged on the cross bar 11 and the bearing 6 is sleeved in the installation hole 32.

[0037] Specifically, in the vertical direction, the installation height of the cross bar 11 is higher than the installation height of the feeding roller 2.

[0038] In this embodiment, a hollow accommodating cavity is defined in the roller 4. Through holes communicating with the accommodating cavity are respectively opened at both ends of the roller 4. The driving motors are respectively fixedly arranged at both ends of the accommodating cavity, that is, the driving motors are fixedly installed in the accommodating cavity through the frame 1. Since the output shaft of the driving motor is movably connected to the swing rod 3 through the rotating shaft 5, the driving motor drives the roller 4 to make a rotating motion, and the roller 4 makes a rotating motion relative to the swing rod 3 through the operation of the two driving motors in the roller 4. When the roller 4 presses the film under the action of gravity, the film on the feeding roller 2 can be further driven to be conveyed outwards through the rotation of the roller 4. In addition, a cross bar 11 is fixedly installed on the frame 1 in the horizontal direction, and the cross bar 11 is located at one end of the frame 1 far from the feeding roller 2. An installation hole 32 is opened on the swing rod 3. The bearing 6 is arranged on the cross bar 11 and the bearing 6 is sleeved in the installation hole 32, so that the swing rod 3 is rotatably connected to the cross bar 11 through the bearing 6, thereby effectively reducing the friction coefficient of the rotation between the swing rod 3 and the cross bar 11, and enabling the roller 4 to automatically adjust the rotation angle of the swing rod 3 according to the thickness of the film on the feeding roller 2.

[0039] Preferably, it further includes an anti-slip member which is arranged on the outer surface of the roller 4.

[0040] Specifically, the anti-slip member is made of rubber or silica gel.

[0041] Further, it further includes a mounting member. A through opening 31 is correspondingly opened on the swing rod 3. The rotating shaft 5 and the swing rod 3 are installed together through the mounting member.

[0042] Specifically, it further includes a backing plate 7, which is arranged on the outer side wall of the swing rod 3. A connection port 71 is provided on the backing plate 7. The rotating shaft 5 sequentially passes through the side wall of the roller 4, the through port 31, and the connection port 71 and then is connected to the mounting member so that the rotating shaft 5 is connected to the swing rod 3.

[0043] In this embodiment, an anti-slip member is provided on the outer surface of the roller 4, so as to further increase the kinetic energy of the film being conveyed outwards by the rotation of the roller 4, and thus keep the tension of the film balanced. In addition, through holes are respectively provided at both ends of the roller 4, a through port 31 is correspondingly provided on the swing rod 3, and a connection port 71 is provided on the backing plate 7. The rotating shaft 5 sequentially passes through the side wall of the roller 4, the through port 31, and the connection port 71 and then is connected to the mounting member, so that the rotating shaft 5 is assembled with the swing rod 3 through the mounting member, and thus effectively improves the assembly stability between the roller 4 and the swing rod 3.

[0044] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A film uncoiler, characterized in that, Comprising: Frame (1); Feeding roller (2), the feeding roller (2) being rotatably arranged on the frame (1) to be adapted to convey a film; Swing rod (3), the swing rod (3) being respectively hinged on both sides of the frame (1); Roller (4), at both ends of the roller (4), a rotating shaft (5) is respectively movably arranged, and the rotating shaft (5) is connected to the corresponding swing rod (3) at the end far from the roller (4) so that the roller (4) is movably connected to the swing rod (3), thereby enabling the roller (4) to press the film under the action of gravity.

2. The thin film unwinder according to claim 1, characterized in that, Further comprising a driving motor, the driving motor being respectively fixedly arranged on both sides of the roller (4), and the output shaft of the driving motor being connected to the swing rod (3) through the rotating shaft (5) so that the driving motor drives the roller (4) to perform a rotational motion.

3. The thin film unwinder according to claim 2, wherein, A hollow accommodating cavity is defined in the roller (4), the driving motor is arranged at both ends of the accommodating cavity, through holes are respectively opened at both ends of the roller (4), and the rotating shaft (5) passes through the through holes at the end far from the driving motor and then is connected to the swing rod (3).

4. A film uncoiler according to claim 1, characterized in that, A cross bar (11) is arranged at the end of the frame (1) far from the feeding roller (2), and a mounting hole (32) is opened on the swing rod (3), and the cross bar (11) passes through the mounting hole (32) so that the swing rod (3) is rotatably connected to the cross bar (11).

5. A film unwinding machine according to claim 4, characterized in that, Further comprising a bearing (6), the bearing (6) is arranged on the cross bar (11), and the bearing (6) is sleeved in the mounting hole (32).

6. A film uncoiler according to claim 4, characterized in that, In the vertical direction, the mounting height of the cross bar (11) is higher than the mounting height of the feeding roller (2).

7. A film unwinding machine according to claim 1, characterized in that, Further comprising an anti-slip member, the anti-slip member is arranged on the outer surface of the roller (4).

8. A film unwinding machine according to claim 7, characterized in that, The anti-slip member is made of rubber or silica gel.

9. A film unwinding machine according to claim 1, characterized in that, Further comprising a mounting member, corresponding through openings (31) are opened on the swing rod (3), and the rotating shaft (5) and the swing rod (3) are mounted together through the mounting member.

10. A film uncoiler according to claim 9, characterized in that, Further comprising a backing plate (7), the backing plate (7) is arranged on the outer side wall of the swing rod (3), a connection opening (71) is opened on the backing plate (7), and the rotating shaft (5) passes through the side wall of the roller (4), the through opening (31), the connection opening (71) in sequence and then is connected to the mounting member so that the rotating shaft (5) is connected to the swing rod (3).

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