CN211942077U - Film stretching control system - Google Patents
Film stretching control system Download PDFInfo
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- CN211942077U CN211942077U CN202020513700.1U CN202020513700U CN211942077U CN 211942077 U CN211942077 U CN 211942077U CN 202020513700 U CN202020513700 U CN 202020513700U CN 211942077 U CN211942077 U CN 211942077U
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Abstract
The utility model relates to a film production facility technical field, its aim at provides a film stretching control system. The film stretching control system comprises a traction mechanism and a heating cylinder, wherein a temperature sensor is arranged in the heating cylinder, and the traction mechanism comprises a traction roller, a rotary driving device, a coupler, a controller and an operation panel; two ends of the coupling are respectively connected with an output shaft of the rotary driving device and the shaft end of the traction roller; the two groups of traction mechanisms are divided into an upper traction mechanism arranged at the top of the heating cylinder and a lower traction mechanism arranged at the bottom of the heating cylinder; the operation panel, the rotary driving device in the upper traction mechanism, the rotary driving device in the lower traction mechanism and the temperature sensor are all electrically connected with the controller. The utility model discloses can show the force value of tensile force in real time, the speed difference of carry over pinch rolls or the temperature of auxiliary heating section of thick bamboo about the user's regulation of being convenient for.
Description
Technical Field
The utility model relates to a film production facility technical field especially relates to a film stretching control system.
Background
The strong cross film adopts two layers of high-strength PE films to be compounded along the 45-degree oblique crossing, can ensure the transverse and longitudinal tensile strength, has high-strength puncture resistance, and has the characteristics of light resistance, humidity resistance, corrosion resistance, moth-eating resistance, folding resistance and the like besides the characteristics of a common plastic film, so that the strong cross film has wider application compared with a common plastic film.
In the process, a blown pipe is oriented and stretched by a film stretching control system, and the stretching force, heating temperature and the like of the HDPE original film in the film stretching control system have direct influence on the mechanical properties such as thermal stability and the like of the strong cross film. The film stretching control system in the prior art cannot control the traction tension of the HDPE original film, and is difficult to confirm whether the film is stretched with proper tension force, thereby influencing the quality of the formed film.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems existing in the prior art, the utility model provides a film stretching control system.
The utility model adopts the technical proposal that:
a film stretching control system comprises a traction mechanism and a heating cylinder, wherein a temperature sensor is arranged in the heating cylinder, and the traction mechanism comprises a traction roller, a rotary driving device, a coupler, a controller and an operation panel; two ends of the coupler are respectively connected with an output shaft of the rotary driving device and the shaft end of the traction roller; the two groups of traction mechanisms are divided into an upper traction mechanism arranged at the top of the heating cylinder and a lower traction mechanism arranged at the bottom of the heating cylinder; the operation panel, the rotary driving device in the upper traction mechanism, the rotary driving device in the lower traction mechanism and the temperature sensor are all electrically connected with the controller.
Preferably, the film stretching control system further comprises a laminating machine, the laminating machine comprises a telescopic driving device and a laminating roller, the side wall of the laminating roller is fixedly connected with the output shaft of the telescopic driving device, the central axis of the laminating roller is parallel to the central axis of the traction roller, and the central axis of the output shaft of the telescopic driving device is perpendicular to the central axis of the traction roller.
Preferably, the traction mechanism further comprises a speed reducer, and one end of the coupling is connected with an output shaft of the rotary driving device through the speed reducer.
Preferably, film stretching control system still includes unreeling machine and guide roller group, the guide roller group includes first guide roll, second guide roll and third guide roll, the axis of first guide roll, second guide roll and third guide roll all is parallel with the axis of carry over pinch rolls, the top surface of first guide roll and the bottom surface of second guide roll are located the coplanar, the third guide roll is located the upside of first guide roll and second guide roll, and the top surface of third guide roll and the top surface of carry over pinch rolls are located the coplanar.
Preferably, the heating cylinder comprises a preheating drying cylinder, a stretching drying cylinder and a shaping drying cylinder which are sequentially arranged from top to bottom.
Preferably, the rotational speed of the rotary drive in the lower traction means is greater than the rotational speed of the rotary drive in the upper traction means.
The beneficial effects of the utility model are that concentrated the appearance, can show the power value of tensile force in real time, the speed difference of carry over pinch rolls or the temperature of auxiliary heating section of thick bamboo about the user's regulation of being convenient for. Particularly, the utility model discloses in the use, extrude high density polyethylene and form tubular product earlier through the blown film process, treat tubular product cooling back, in drawing refrigerated tubular product and entering the cartridge heater through last drive mechanism, then derive through drive mechanism down. In the process, the cooled pipe is heated by the heating cylinder, and the upper traction mechanism and the lower traction mechanism continuously stretch the pipe in the process of drawing the pipe; meanwhile, the controller collects and processes the operation data of the rotary driving device in the upper traction mechanism, the rotary driving device in the lower traction mechanism and the temperature sensor in real time to obtain the real-time torque percentage of a frequency converter in the rotary driving device and the temperature of the heating cylinder, and displays the real-time torque percentage and the temperature of the heating cylinder through the operation panel, so that a user can master the drawing force of the upper traction mechanism and the lower traction mechanism on the pipe, the temperature of the heating cylinder and the like in real time and then correspondingly control the drawing force, the problem of overlarge film forming stress is avoided, the drawing performance of original film drawing can be greatly improved, and the product quality is stabilized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a force analysis diagram of the membrane in the configuration of FIG. 1;
FIG. 3 is a schematic structural view of example 2;
fig. 4 is an enlarged schematic view of the drawing mechanism, the heating cylinder, and the guide roller group in example 2.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
the embodiment provides a film stretching control system, as shown in fig. 1 and 2, which includes a drawing mechanism 1 and a heating cylinder 2, wherein a temperature sensor is disposed in the heating cylinder 2, and the drawing mechanism 1 includes a drawing roller 11, a rotation driving device 12, a coupler 13, a controller and an operation panel; two ends of the coupler 13 are respectively connected with an output shaft of the rotary driving device 12 and the shaft end of the traction roller 11; the two groups of traction mechanisms 1 are divided into an upper traction mechanism 1a arranged at the top of the heating cylinder 2 and a lower traction mechanism 1b arranged at the bottom of the heating cylinder 2, the rotating speed of a rotary driving device 12 in the lower traction mechanism 1b is greater than that of the rotary driving device 12 in the upper traction mechanism 1a, and specifically, the rotating speed of the rotary driving device 12 in the lower traction mechanism 1b is 2.5 times that of the rotary driving device 12 in the upper traction mechanism 1 a; in this embodiment, the traction mechanism 1 further includes a speed reducer 14, one end of the coupling 13 is connected to the output shaft of the rotation driving device 12 through the speed reducer 14, and the setting of the speed reducer 14 can improve the stability of the traction mechanism 1.
The operation panel, the rotary driving device 12 in the upper traction mechanism 1a, the speed reducer 14 in the upper traction mechanism 1a, the rotary driving device 12 in the lower traction mechanism 1b, the speed reducer 14 in the lower traction mechanism 1b and the temperature sensor are all electrically connected with the controller.
In the implementation process of the embodiment, the high-density polyethylene is extruded and formed into the pipe by the film blowing process, after the pipe is cooled, the cooled pipe is drawn by the upper drawing mechanism 1a and enters the heating cylinder 2, and then is led out by the lower drawing mechanism 1 b. In the process, the cooled pipe is heated by the heating cylinder 2, and the upper traction mechanism 1a and the lower traction mechanism 1b continuously stretch the pipe in the process of drawing the pipe; meanwhile, the controller collects and processes the operation data of the rotary driving device 12 in the upper traction mechanism 1a, the speed reducer 14 in the upper traction mechanism 1a, the rotary driving device 12 in the lower traction mechanism 1b, the speed reducer 14 in the lower traction mechanism 1b and the temperature sensor in real time to obtain the real-time torque percentage of a frequency converter in the rotary driving device 12, the rotating speed ratio of the speed reducer 14 and the temperature of the heating cylinder 2, and displays the data through the operation panel, so that a user can master the tensile force of the upper traction mechanism and the lower traction mechanism on the pipe, the temperature of the heating cylinder 2 and the like in real time and then performs corresponding control, and the problem of overlarge film forming stress is avoided.
For the realization to the comprehensive drawing of the former membrane of HDPE, avoid the former membrane of HDPE to take place the problem of curling when getting into or exporting by first drive mechanism 1b by first drive mechanism 1a, in this embodiment, the tensile control system of film still includes pressfitting machine 3, pressfitting machine 3 includes flexible drive arrangement 31 and nip roller 32, the lateral wall of nip roller 32 and flexible drive arrangement 31's output shaft fixed connection, the axis of nip roller 32 is parallel with the axis of carry over pinch rolls 11, the axis of the output shaft of flexible drive arrangement 31 is perpendicular with the axis of carry over pinch rolls 11.
Example 2:
as shown in fig. 3 and 4, based on embodiment 1, in this embodiment, the film stretching control system further includes an unreeling machine 4 and a guide roller set 5, the guide roller set 5 includes a first guide roller 51, a second guide roller 52 and a third guide roller 53, central axes of the first guide roller 51, the second guide roller 52 and the third guide roller 53 are all parallel to a central axis of the drawing roller 11, a top surface of the first guide roller 51 and a bottom surface of the second guide roller 52 are located on the same plane, the third guide roller 53 is located on an upper side of the first guide roller 51 and the second guide roller 52, and a top surface of the third guide roller 53 and a top surface of the drawing roller 11 are located on the same plane.
Further, the heating cylinder 2 comprises a preheating drying cylinder 21, a stretching drying cylinder 22 and a shaping drying cylinder 23 which are sequentially arranged from top to bottom. The HDPE raw film can be sequentially subjected to moisture drying and preheating through a preheating drying cylinder 21, heated to the orientation temperature through a stretching drying cylinder 22, subjected to high-temperature shaping through a shaping drying cylinder 23, and then flattened and wound through a lower traction mechanism 1 b.
A method for preparing a thin film comprises the following steps:
and (3) a film blowing procedure: extruding and forming high density polyethylene into a pipe;
a stretching process: after the tube is cooled and formed, the tube is stretched by the film stretching control system in the embodiment 1 or 2 to form a raw HDPE film, so that polyethylene molecules are arranged in an oriented manner, the strength of the film in the Machine Direction (MD) is increased, and then the raw HDPE film (i.e. the oriented tube film) is flattened and wound;
rotary cutting: unfolding, rotating and re-inflating the HDPE original film, and then spirally cutting the HDPE original film along 45 degrees of the processing direction and rolling the HDPE original film;
a cross compounding procedure: and (3) laminating the two layers of spirally cut HDPE original films into a whole after cross compounding to form a film. And (3) alternately laminating and spreading the two layers of spirally cut HDPE original films at a certain angle, and then hot-pressing or gluing the two layers of spirally cut HDPE original films.
In this example, two layers of the spirally cut HDPE original films were crossed in a 90 ° orientation when they were laminated together after cross-lamination.
In this embodiment, the two spiral-cut HDPE original films are compounded with glue or polyethylene.
Specifically, in the stretching process, the controller acquires and processes the operation data of the rotary driving device 12 in the upper traction mechanism 1a, the speed reducer 14 in the upper traction mechanism 1a, the rotary driving device 12 in the lower traction mechanism 1b, the speed reducer 14 in the lower traction mechanism 1b and the temperature sensor in real time to obtain the real-time torque percentage of a frequency converter in the rotary driving device 12, the rotating speed ratio of the speed reducer 14 and the temperature of the heating cylinder 2, and the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b are both 7.5-8.5N; the calculation formula of the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a is as follows:
F1＝T1/R1，T1＝U1*I1*M1；
in the formula, T1 is the torque of the rotary drive device 12 in the upper traction mechanism 1a, R1 is the radius of the traction roller 11 in the upper traction mechanism 1a, U1 is the real-time torque percentage of the frequency converter in the rotary drive device 12 in the upper traction mechanism 1a, I1 is the rotation speed ratio of the speed reducer 14 in the upper traction mechanism 1a, and M1 is the rated torque of the rotary drive device 12 in the upper traction mechanism 1 a;
the real-time tension F2 of the pulling roll 11 in the lower pulling mechanism 1b is calculated by the following formula:
F2＝T2/R2，T2＝U2*M2；
in the formula, T2 is the torque of the rotary drive device 12 in the lower traction mechanism 1b, R2 is the radius of the traction roller 11 in the lower traction mechanism 1b, U2 is the real-time torque percentage of the frequency converter in the rotary drive device 12 in the lower traction mechanism 1b, I2 is the rotation speed ratio of the speed reducer 14 in the lower traction mechanism 1b, and M2 is the rated torque of the rotary drive device 12 in the lower traction mechanism 1 b.
Specifically, the higher the temperature set by the heating cylinder 2 is, the smaller the real-time tension F1 of the drawing roller 11 in the upper drawing mechanism 1a and the real-time tension F2 of the drawing roller 11 in the lower drawing mechanism 1b are, and when the tensions F1 and F2 are in the range of 7.5-8.5N, the minimum stress generated during the stretching of the film can be ensured; if the tensile forces F1 and F2 are too large, problems such as shrinkage and curling of the stretched film may occur, and if the tensile forces F1 and F2 are too small, problems such as wrinkling and bubble instability of the film may occur.
In order to realize accurate adjustment of the tensile forces F1 and F2, the method further comprises the following steps in the stretching process:
acquiring and processing real-time tension F1 of a traction roller 11 in an upper traction mechanism 1a and real-time tension F2 of the traction roller 11 in a lower traction mechanism 1b in real time, when the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b are greater than 8.5N, the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b raise the temperature of a heating cylinder 2 by 5 ℃ every time of being greater than 0.5N of 8.5N, and waiting for 30 seconds after each adjustment until the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b are stabilized within 7.5-8.5N; when the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b are smaller than 7.5N, the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b reduce the temperature of the heating cylinder 2 by 5 ℃ every time the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F2 of the traction roller 11 in the lower traction mechanism 1b are smaller than 0.5N of 7.5N, waiting for one minute after each adjustment until the real-time tension F1 of the traction roller 11 in the upper traction mechanism 1a and the real-time tension F36.
For example, a standard value of the tension is set to 8.5N, that is, a standard value of the tension of the pulling roll 11 in the upper pulling mechanism 1a and the tension of the pulling roll 11 in the lower pulling mechanism 1b is set to 8.5N. When the width of the film to be stretched is 750 mm, the color is black, and the temperature of the heating cylinder 2 is set to 250 ℃, if the real-time tension F2 of the drawing roller 11 in the lower drawing mechanism 1b is 7.5N and is lower than the standard value (8.5N)1N, the temperature of the heating cylinder 2 needs to be reduced by 10 ℃, at this time, the temperature in the heating cylinder 2 is adjusted in a manner of reducing the temperature in the heating cylinder 2 by 5 ℃ each time and waiting for 30 seconds after each adjustment until the real-time tension F2 of the drawing roller 11 in the lower drawing mechanism 1b is stabilized to be the standard value 8.5N.
The various embodiments described above are merely illustrative, and may or may not be physically separate, as they relate to elements illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, and may be located in one place or distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. Such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Finally, it should be noted that the present invention is not limited to the above-mentioned alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.
Claims (6)
1. A film stretching control system, characterized by: the device comprises a traction mechanism (1) and a heating cylinder (2), wherein a temperature sensor is arranged in the heating cylinder (2), and the traction mechanism (1) comprises a traction roller (11), a rotary driving device (12), a coupler (13), a controller and an operation panel; two ends of the coupler (13) are respectively connected with an output shaft of the rotary driving device (12) and the shaft end of the traction roller (11); the traction mechanisms (1) are provided with two groups, and the two groups of traction mechanisms (1) are divided into an upper traction mechanism (1a) arranged at the top of the heating cylinder (2) and a lower traction mechanism (1b) arranged at the bottom of the heating cylinder (2); the operation panel, the rotary driving device (12) in the upper traction mechanism (1a), the rotary driving device (12) in the lower traction mechanism (1b) and the temperature sensor are all electrically connected with the controller.
2. The film stretching control system according to claim 1, wherein: the film stretching control system further comprises a laminating machine (3), the laminating machine (3) comprises a telescopic driving device (31) and a laminating roller (32), the side wall of the laminating roller (32) is fixedly connected with the output shaft of the telescopic driving device (31), the central axis of the laminating roller (32) is parallel to the central axis of the traction roller (11), and the central axis of the output shaft of the telescopic driving device (31) is perpendicular to the central axis of the traction roller (11).
3. The film stretching control system according to claim 1, wherein: the traction mechanism (1) further comprises a speed reducer (14), and one end of the coupler (13) is connected with an output shaft of the rotary driving device (12) through the speed reducer (14).
4. The film stretching control system according to claim 1, wherein: the film stretching control system further comprises an unreeling machine (4) and a guide roller set (5), the guide roller set (5) comprises a first guide roller (51), a second guide roller (52) and a third guide roller (53), the central axes of the first guide roller (51), the second guide roller (52) and the third guide roller (53) are parallel to the central axis of the traction roller (11), the top surface of the first guide roller (51) and the bottom surface of the second guide roller (52) are located on the same plane, the third guide roller (53) is located on the upper sides of the first guide roller (51) and the second guide roller (52), and the top surface of the third guide roller (53) and the top surface of the traction roller (11) are located on the same plane.
5. The film stretching control system according to claim 1, wherein: the heating cylinder (2) comprises a preheating drying cylinder (21), a stretching drying cylinder (22) and a shaping drying cylinder (23) which are sequentially arranged from top to bottom.
6. The film stretching control system according to claim 1, wherein: the rotating speed of the rotating driving device (12) in the lower traction mechanism (1b) is greater than that of the rotating driving device (12) in the upper traction mechanism (1 a).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020513700.1U CN211942077U (en) | 2020-04-09 | 2020-04-09 | Film stretching control system |
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| CN202020513700.1U CN211942077U (en) | 2020-04-09 | 2020-04-09 | Film stretching control system |
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| CN211942077U true CN211942077U (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770912A (en) * | 2022-03-03 | 2022-07-22 | 广东省科学院生物与医学工程研究所 | Micro-flow pipeline stretching system and stretching method |
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2020
- 2020-04-09 CN CN202020513700.1U patent/CN211942077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770912A (en) * | 2022-03-03 | 2022-07-22 | 广东省科学院生物与医学工程研究所 | Micro-flow pipeline stretching system and stretching method |
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Effective date of registration: 20211021 Address after: 434000 Ba Ling Shan Zhen Wang Chang Cun, Jingzhou District, Jingzhou City, Hubei Province Patentee after: JINGZHOU YUSHI PLASTIC INDUSTRY Co.,Ltd. Address before: 434000 3008, 3rd floor, office building, Hubei Yuxiang livestock and poultry Co., Ltd., north of Taihui Road, high tech Industrial Park, Jingzhou District, Jingzhou City, Hubei Province Patentee before: Heshi polymer technology (Hubei) Co.,Ltd. |