CN216360278U

CN216360278U - Automatic film winding and cutting device of film blowing machine

Info

Publication number: CN216360278U
Application number: CN202121426795.4U
Authority: CN
Inventors: 王根乐
Original assignee: Langfang Zhongfeng Machinery Technology Co ltd
Current assignee: Langfang Zhongfeng Machinery Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-04-22
Anticipated expiration: 2031-06-25

Abstract

An automatic film winding and cutting device of a film blowing machine is characterized in that the front end of a squeeze roll support is connected to a rotating shaft of the squeeze roll support, the rotating shaft of the squeeze roll support is rotatably connected to a frame, and a squeeze roll is arranged at the rear end of the squeeze roll support; a cutting mechanism support rotating shaft is rotatably arranged above the extrusion roller support, the bottom end of the cutting mechanism support is connected to the cutting mechanism support rotating shaft, a top end guide roller, a plastic film broken end pressing and attaching mechanism and a plastic film cutting mechanism are arranged at the top end of the cutting mechanism support, the top end guide roller is arranged at the topmost end of the cutting mechanism support, and the plastic film cutting mechanism and the plastic film broken end pressing and attaching mechanism are respectively arranged above and below the top end guide roller. The utility model has the advantages that: the plastic film cutting and continuously winding can be automatically completed by the aid of the cooperation of the top end guide roller, the winding drum and the plastic film broken end pressing and attaching mechanism, the cutting and winding success rate is guaranteed, and working efficiency is improved.

Description

Automatic film winding and cutting device of film blowing machine

Technical Field

The utility model relates to an automatic film winding and cutting device of a film blowing machine, which is matched equipment of the film blowing machine and can realize the functions of automatically winding a film, cutting a plastic film, unwinding and replacing a winding drum in the whole process.

Background

The plastic film output by the film blowing machine during production needs to be rolled on a winding drum (generally a paper drum), and when the plastic film is fully rolled up, the plastic film and the broken ends continue to be wound on a newly replaced winding drum. Because the plastic film is soft and thin, the broken end is easy to tear or can not be cut off when the plastic film is cut off, the plastic film is frequently stopped for adjustment, and the production efficiency is influenced.

Disclosure of Invention

The utility model aims to provide an automatic film winding and cutting device of a film blowing machine, which aims to solve the problems in the prior art.

The technical scheme of the utility model is as follows: a plastic film cutting device of a film blowing machine is characterized by comprising a squeeze roller support rotating shaft, a squeeze roller support, a cutting mechanism support rotating shaft, a cutting mechanism support, a plastic film cutting mechanism and a plastic film broken end pressing and attaching mechanism, wherein the front end of the squeeze roller support is connected to the squeeze roller support rotating shaft, the squeeze roller support rotating shaft is rotatably connected to a machine frame, and a squeeze roller is arranged at the rear end of the squeeze roller support; a cutting mechanism support rotating shaft is rotatably arranged above the extrusion roller support, the bottom end of the cutting mechanism support is connected to the cutting mechanism support rotating shaft, a top end guide roller, a plastic film broken end pressing and attaching mechanism and a plastic film cutting mechanism are arranged at the top end of the cutting mechanism support, the top end guide roller is arranged at the topmost end of the cutting mechanism support, and the plastic film cutting mechanism and the plastic film broken end pressing and attaching mechanism are respectively arranged above and below the top end guide roller.

The utility model has the advantages that: the plastic film cutting and continuously winding can be automatically completed by the aid of the cooperation of the top end guide roller, the winding drum and the plastic film broken end pressing and attaching mechanism, the cutting and winding success rate is guaranteed, and working efficiency is improved.

Drawings

FIG. 1 is a schematic side view of a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a plastic film cutting mechanism using the cutting blade of FIG. 1;

FIG. 3 is a schematic side view of a second embodiment of the present invention;

FIG. 4 is a schematic structural view of a plastic film cutting mechanism using the punching plate in FIG. 3;

FIG. 5 is a schematic plan view of a plastic film with a dot line break and a detection hole to which the second embodiment described above is applied;

FIG. 6 is a schematic structural view of a first embodiment (platen) of the plastic film broken end press-attaching mechanism;

FIG. 7 is a schematic structural view of a second embodiment (brush) of the plastic film broken end press-attaching mechanism;

FIG. 8 is a schematic structural view of a first embodiment (roller) of the plastic film broken end press-attaching mechanism;

fig. 9-12 are schematic views of the working process of the present invention, wherein:

FIG. 9 is a schematic view of the mounting of the roll just after completion of a roll of plastic film;

FIG. 10 is a schematic view of the turntable rotated 180 clockwise after the spool is installed;

FIG. 11 is a schematic view showing the cutter mechanism holder rotated clockwise to a horizontal state after the roll rotated to the rear is wound with the plastic film;

figure 12 is a schematic view of the roll holder rotated counter-clockwise until it abuts against the leading roll and the blanking plate is extended to blank the plastic film.

Description of reference numerals: 1. the device comprises a frame, 5, a front end guide roller, 6, a squeezing roller support rotating shaft, 7, a squeezing roller support, 8, a squeezing roller, 10, a rotating disc, 11, a cutting mechanism support rotating shaft, 12, a cutting mechanism support, 13, an air cylinder, 14, a cutting knife, 15, a top end guide roller, 16, a punching plate, 17, a winding drum, 17A, a first winding drum, 17B, a second winding drum, 18, an air blowing pipe, 19, a punching detection sensor, 20, a punching start sensor, 22, a winding shaft, 23, a telescopic supporting head, 24, a winding support guide roller, 26, a material receiving disc, 49, a pressing plate, 50, a swinging arm, 51, a hinge shaft, 52, a brush, 53, a roller, S, a plastic film, S1, a point breaking line, S2, a detection hole (or mark), S3 and a plastic film breaking head.

Detailed Description

Referring to fig. 1 and 2, the first embodiment of the plastic film cutting device of the film blowing machine of the present invention comprises a squeeze roller support rotating shaft 6, a squeeze roller support 7, a cutting mechanism support rotating shaft 11, a cutting mechanism support 12, a plastic film cutting mechanism and a plastic film broken end pressing and attaching mechanism, wherein the front end of the squeeze roller support 7 is connected to the squeeze roller support rotating shaft 6, the squeeze roller support rotating shaft 6 is rotatably connected to a frame 1, and a squeeze roller 8 is arranged at the rear end of the squeeze roller support 7; a cutting mechanism support rotating shaft 11 is rotatably arranged above the squeeze roller support 7, the bottom end of the cutting mechanism support 12 is connected to the cutting mechanism support rotating shaft 11, a top end guide roller 15, a plastic film broken end pressing mechanism and a plastic film cutting mechanism are arranged at the top end of the cutting mechanism support 12, the top end guide roller 15 is arranged at the topmost end of the cutting mechanism support 12, and the plastic film cutting mechanism and the plastic film broken end pressing mechanism are respectively arranged above and below the top end guide roller 15.

The plastic film cutting mechanism comprises an air cylinder 13 and a cutting knife 14, the air cylinder 13 is fixed at the top end of a cutting mechanism bracket 12, the cutting knife 14 is arranged at the top end of a piston rod of the air cylinder 13, and the cutting knife 14 of the embodiment is a sawtooth blade (as shown in figure 2) and can also be a sliding fly knife, an electric heating blade, an electric heating wire or a laser knife and the like.

Referring to fig. 3-5, the second embodiment of the present invention is different from the first embodiment in that a blow-off start sensor 20 is disposed above the rotating shaft 6 of the squeeze roll holder; secondly, the cutting knife 14 in the previous embodiment is replaced by a crescent-shaped punching plate 16. A blow-off detection sensor 19 may also be provided beside the cylinder 13. The plastic film S processed in this embodiment requires a dot-break line S1 and a detection hole or mark S2 (see fig. 5) to be processed at the cut portion in advance to provide a signal for the impact start sensor 20 (see the following description of the operation process for details).

Referring to fig. 6-8, the plastic film broken end pressing mechanism of the present invention is an air blowing pipe 18, which can be replaced by other components with the same function, such as an (arc) pressing plate 49 (see fig. 6), a brush 52 (see fig. 7) or a roller 53 (see fig. 8) capable of deflecting up and down, the pressing plate, the brush or the roller can be driven by an air cylinder to swing up and down, and can also be connected with one end of a swing arm 50, the other end of the swing arm 50 is hinged at the top end of the cutting mechanism bracket 12 (a torsion spring can be installed on a hinge shaft 51), and when the plastic film S is cut off, the pressing plate, the brush or the roller moves down under the elasticity of the torsion spring, the gravity of itself or driven by the air cylinder to press the plastic film broken end S3 down on the surface of the rotating winding drum 17 to be wound up by the winding drum 17 (see the following working process description in detail).

When the film winding device is used, the film winding device needs to be matched with a film winding device of a film blowing machine, and the film winding device comprises a rotary table 10, a winding shaft 22, a telescopic supporting head 23 and a winding support guide roller 24 (see figure 1). The working process of the utility model is explained below (taking the second embodiment as an example):

referring to fig. 9, the plastic film S passes through the front end guide roller 5 and is fed to the front side (left side in the drawing) of the film winding device. At this time, two winding drums 17 supported by two pairs of fixed supporting heads and telescopic supporting heads 23 on the rotary table 10 are in horizontal positions, a winding drum (namely, a second winding drum 17B) is just replaced between the rear pair of fixed supporting heads and telescopic supporting heads 23, the first winding drum 17A replaced before is rotated to the front (see fig. 9), and the plastic film S sequentially passes through the upper surface of the extrusion roller support rotating shaft 6 (roller) and the lower surface of the extrusion roller 8 and then is wound on the first winding drum 17A upwards.

Referring to fig. 10, after the plastic film S is wound several times on the first bobbin 17A, the turntable 10 is rotated clockwise by 180 ° from above and wound on a winding stand guide roller 24, and the first bobbin 17A is rotated to the rear (as shown in fig. 10), and the plastic film S of a set length is wound on the first bobbin 17A.

Referring to fig. 11, when the first bobbin 17A is fully wound with the plastic film S of the set length, the impact start sensor 20 detects the detection hole or mark S2 on the plastic film S, and sends a start signal (for the first embodiment, the start signal is directly sent by the program), the controller of the apparatus controls and drives the rotating shaft 11 of the cutting mechanism bracket to rotate, so that the cutting mechanism bracket 12 swings clockwise by an angle, the top end guide roller 15 at the top end presses the plastic film S downwards, the plastic film S forms a vertical plane between the top end guide roller 15 and the upper winding bracket guide roller 24, and the plane is perpendicular to the impact plate 16 at this time, and the preparation for impact cutting is made.

Referring to fig. 12, in the process immediately above, the rotating shaft 6 of the squeeze roller holder swings counterclockwise to drive the squeeze roller holder 7 to swing synchronously, and the squeeze roller 8 at the top end swings upward to abut against the outer periphery of the second winding drum 17B, so that the plastic film S between the two is clamped. At this time, the air blowing pipe 18 blows air downward; when the point broken line S1 of the plastic film is opposite to the punching plate 16 (when the punching start sensor 20 detects that the start signal sent by the detection hole S2 is properly delayed and the delay is controlled by a program), the air cylinder 13 is started, the punching plate 16 extends backwards (rightwards in the figure) to punch the point broken line S1 of the plastic film S (when the cutting is unsuccessful, the punching detection sensor 19 beside the air cylinder 13 sends a signal to the controller, and the cutting action is repeated until the cutting is completed); the cut end S3 of the plastic film under the cut plastic film S is attached downward to the surface of the second roll 17B located in front and smoothly rolled into the second roll 17B by the air flow blown downward from the blow pipe 18, and then the devices are reset to the state of fig. 9.

For the first embodiment, after the plastic film is fully wound on the winding drum 17, the program sends out a cutting instruction, and the air cylinder 13 is started to drive the cutting knife 14 to extend out to cut the plastic film S.

Claims

1. An automatic film rolling and cutting device of a film blowing machine is characterized by comprising a squeeze roller support rotating shaft (6), a squeeze roller support (7), a cutting mechanism support rotating shaft (11), a cutting mechanism support (12), a plastic film cutting mechanism and a plastic film broken end pressing and attaching mechanism, wherein the front end of the squeeze roller support (7) is connected to the squeeze roller support rotating shaft (6), the squeeze roller support rotating shaft (6) is rotatably connected to a machine frame (1), and a squeeze roller (8) is arranged at the rear end of the squeeze roller support (7); a cutting mechanism support rotating shaft (11) is rotatably arranged above the squeeze roller support (7), the bottom end of the cutting mechanism support (12) is connected to the cutting mechanism support rotating shaft (11), a top end guide roller (15), a plastic film broken end pressing mechanism and a plastic film cutting mechanism are arranged at the top end of the cutting mechanism support (12), the top end guide roller (15) is arranged at the topmost end of the cutting mechanism support (12), and the plastic film cutting mechanism and the plastic film broken end pressing mechanism are respectively arranged above and below the top end guide roller (15).

2. The automatic film winding and cutting device of the film blowing machine according to the claim 1, characterized in that the plastic film cutting mechanism comprises a cylinder (13) and a cutting knife (14), the cylinder (13) is fixed on the top end of a cutting mechanism bracket (12), and the cutting knife (14) is arranged on the top end of a piston rod of the cylinder (13).

3. The automatic film winding and cutting device of the film blowing machine according to claim 2, characterized in that the cutting knife (14) comprises a sawtooth blade, a sliding fly knife, an electric heating blade, an electric heating wire or a laser knife.

4. The automatic film winding and cutting device of the film blowing machine according to claim 1, characterized in that a punching start sensor (20) is arranged above the rotating shaft (6) of the extrusion roller bracket; the plastic film cutting mechanism comprises an air cylinder (13) and a punching plate (16), wherein the air cylinder (13) is fixed at the top end of a cutting mechanism bracket (12), and the punching plate (16) is arranged at the top end of a piston rod of the air cylinder (13).

5. The automatic film winding and cutting device of the film blowing machine according to claim 4, characterized in that the punching plate (16) is crescent-shaped.

6. The automatic film winding and cutting device of the film blowing machine according to the claim 1, characterized in that the plastic film broken end pressing mechanism comprises a gas blowing pipe (18), a pressing plate, a brush or a roller, and the pressing plate, the brush or the roller can move up and down.