A PE film processing smoothing device

Abstract

The utility model discloses a kind of PE film processing smoothing devices, including substrate and PE film winding structure, and substrate is equipped with smoothing structure. Smoothing structure includes base box, ultrasonic sensor, lifting assembly and pressure roller. Ultrasonic sensor is arranged below winding roller, for detecting film roll diameter. Lifting assembly includes hydraulic rod, lifting plate and lifting arm, and pressure roller is connected with lifting arm by pressure sensor. Control system is according to diameter signal detected by ultrasonic sensor, according to formula F=F0*(D / D0) calculates target pressure, adjusts pressure roller height by hydraulic rod, while pressure sensor real-time feedback forms closed-loop control. The utility model realizes constant linear pressure smoothing in winding process, effectively solve the problem of inadaptation of pressure caused by winding diameter change, improve PE film winding quality.

Description

Technical Field

[0001] This utility model relates to the field of PE film processing technology, specifically a PE film processing smoothing device. Background Technology

[0002] Polyethylene (PE) film is widely used in packaging, agriculture, construction, and other fields due to its excellent moisture resistance, chemical stability, and processability. In the production process of PE film, winding is one of the final and critical steps. To ensure a tight, neat, bubble-free, and wrinkle-free roll, a common process involves using pressure rollers to press the surface of the roll (also known as "smoothing rollers" or "contact rollers").

[0003] In the prior art, there are various device designs for smoothing PE films. For example, utility model patent CN223115819U discloses a PE film processing smoothing device, which softens the PE film by setting heated steam and applies outward pulling force to the film using a rotating rubber lever to eliminate wrinkles. However, this device has a complex structure, relies on steam heating and mechanical actuation, and its smoothing effect is greatly affected by film tension, lever wear, and heating uniformity. It is not suitable for directly compacting and smoothing the film roll on the winding roller under high-speed winding conditions.

[0004] For example, utility model patent CN217996250U discloses another PE film processing smoothing device, which heats a rotating drum using a heating roller, and uses the relative rotation of the drum and roller to heat, iron, and squeeze the passing PE film to smooth out wrinkles. Although this device can achieve heat smoothing, it smooths a single-layer film in the process of conveying, rather than a film roll on a growing take-up roller. More importantly, the pressure applied to the film surface by the pressure roller in this device, and in most existing smoothing devices, is usually fixed or manually adjustable.

[0005] In actual winding, as the winding diameter increases, if the pressure applied by the pressure roller remains constant, the linear pressure (pressure per unit width) acting on the film roll will gradually decrease. The initial pressure may be appropriate, but as the diameter increases, insufficient linear pressure may cause the film roll to become loose and not tight, resulting in phenomena such as "chrysanthemum core." Conversely, if the initial pressure is set too high in order to achieve better later results, excessive linear pressure in the early stages of winding may damage the film surface or even cause the film to stretch and deform.

[0006] Therefore, existing smoothing devices generally struggle to maintain a constant, suitable pressure throughout the winding process, thus affecting the final winding quality.

[0007] Therefore, we propose a PE film processing and smoothing device. Utility Model Content

[0008] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a PE film processing and smoothing device. By automatically sensing the winding diameter and precisely adjusting the pressure, it achieves constant linear pressure smoothing, effectively improving the quality of PE film winding and solving the problems in the background technology.

[0009] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: a PE film processing smoothing device, comprising a substrate and a PE film winding structure, wherein a smoothing structure is fixedly installed on the upper outer surface of the substrate, the smoothing structure comprising a base box, a first guide groove, an ultrasonic sensor, a lifting arm, a connecting arm, a pressure sensor, an inverted concave bracket, a pressure roller, a hydraulic rod, a guide rod, a lifting plate, a second guide groove, and a connecting shaft, wherein the base box is fixed on the upper outer surface of the substrate, the PE film winding structure is installed on the upper outer surface of the base box, and the number of the first guide groove, the lifting arm, the guide rod, and the lifting plate are all two sets, the pressure roller is located above the winding roller in the PE film winding structure, the pressure roller is fixed on the outer wall of the connecting shaft, and the connecting shaft is installed on the lower part of the inverted concave bracket.

[0010] Preferably, a bearing is provided between the connecting shaft and the inverted concave bracket, and the connecting shaft is rotatably connected to the inverted concave bracket through the bearing.

[0011] Preferably, the pressure sensor is fixed between the middle of the upper outer surface of the concave bracket and the middle of the lower outer surface of the connecting arm, and the connecting arm is fixed at the upper part between the two sets of lifting arms.

[0012] Preferably, the two sets of first guide grooves are formed at the left and right ends of the upper outer surface of the base box, and the first guide grooves extend to the upper part of the inner cavity of the base box. The lifting arm extends through the first guide groove, and the outer wall of the lifting arm is slidably connected to the first guide groove.

[0013] Preferably, the ultrasonic sensor is fixed in the middle of the outer surface of the upper end of the base box, and the ultrasonic sensor is located below the winding roller in the PE film winding structure.

[0014] Preferably, the hydraulic rod, guide rod, and lifting plate are all located inside the base box. The two sets of lifting arms are fixed at the left and right ends of the upper outer surface of the lifting plate. The two sets of second guide grooves are opened on the left and right sides of the upper outer surface of the lifting plate, and the second guide grooves penetrate to the lower outer surface of the lifting plate. The two sets of guide rods are fixed at the left and right ends of the inner cavity of the base box, and the guide rods penetrate through the second guide grooves. The lifting plate is slidably connected to the guide rods through the second guide grooves. The hydraulic rod is fixed between the middle of the lower end of the inner cavity of the base box and the middle of the lower outer surface of the lifting plate.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a PE film processing smoothing device, which has the following beneficial effects: 1. This PE film processing smoothing device uses an ultrasonic sensor to detect the current diameter of the film roll on the take-up roller in real time and non-contactly, and transmits the signal to an external control system (such as a PLC). The control system dynamically calculates and outputs a control signal based on the preset initial pressure value (F0) and initial diameter (D0) according to the formula F = F0 · (D / D0), driving the hydraulic rod to adjust the downward pressure of the pressure roller. This ensures that the linear pressure exerted by the pressure roller on the surface of the film roll remains constant throughout the entire winding process. It effectively avoids the problems of loose film rolls, looseness, and uneven end faces caused by the decrease in linear pressure due to the increase in the winding diameter in the prior art. It also prevents film surface damage or stretching deformation caused by setting too high an initial pressure to pursue later effects, thus improving the processing quality.

[0016] 2. This PE film processing and smoothing device monitors and feeds back the actual pressure value applied by the pressure roller in real time through a pressure sensor, and compares it with the target pressure value calculated by the control system to form a closed-loop control; it can promptly compensate for possible errors or resistance fluctuations in mechanical transmission, ensuring that the pressure output by the hydraulic rod accurately reaches the set value, thereby improving the stability, accuracy and reliability of the entire pressure regulation system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a PE film processing and smoothing device according to the present invention.

[0018] Figure 2 This is a schematic diagram of the PE film winding structure in a PE film processing and smoothing device of this utility model.

[0019] Figure 3 This is a front cross-sectional view of the PE film winding structure in a PE film processing and smoothing device of this utility model.

[0020] Figure 4 This utility model relates to a PE film processing and smoothing device. Figure 3 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Substrate; 2. Smoothing structure; 3. PE film winding structure; 4. Base box; 5. First guide groove; 6. Ultrasonic sensor; 7. Lifting arm; 8. Connecting arm; 9. Pressure sensor; 10. Inverted concave bracket; 11. Pressure roller; 12. Hydraulic rod; 13. Guide rod; 14. Lifting plate; 15. Second guide groove; 16. Connecting shaft. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1-4 As shown, this utility model provides a PE film processing and smoothing device, including a substrate 1 and a smoothing structure 2 and a PE film winding structure 3 fixedly mounted on the upper outer surface of the substrate 1. The PE film winding structure 3 is prior art and is used to drive the winding roller to rotate to wind up the PE film.

[0024] The smoothing structure 2 includes a base box 4, a first guide groove 5, an ultrasonic sensor 6, a lifting arm 7, a connecting arm 8, a pressure sensor 9, an inverted concave bracket 10, a pressure roller 11, a hydraulic rod 12, a guide rod 13, a lifting plate 14, a second guide groove 15, and a connecting shaft 16.

[0025] The base box 4 is fixedly installed on the upper outer surface of the substrate 1, and the PE film winding structure 3 is installed on one side of the upper outer surface of the base box 4. The ultrasonic sensor 6 is fixedly installed in the middle of the upper outer surface of the base box 4, with its probe facing upwards and directly opposite the lower part of the winding roller in the PE film winding structure 3, for non-contact real-time measurement of the current outer diameter D of the film roll on the winding roller.

[0026] Inside the base box 4, the bottom of the cylinder of the hydraulic rod 12 is fixed to the middle of the lower end of the inner cavity of the base box 4, and the top of its piston rod is fixedly connected to the middle of the lower outer surface of the lifting plate 14. Two sets of guide rods 13 are vertically fixed to the left and right ends of the inner cavity of the base box 4, respectively. The lifting plate 14 is horizontally set, and second guide grooves 15 are opened on its left and right sides, penetrating the upper and lower outer surfaces. The guide rods 13 pass through the corresponding second guide grooves 15, so that the lifting plate 14 can slide stably vertically along the guide rods 13. The lower ends of the two sets of lifting arms 7 are fixed to the left and right ends of the upper outer surface of the lifting plate 14, respectively.

[0027] On the upper outer surface of the base box 4, first guide grooves 5 are respectively formed at the left and right ends, extending into the upper part of the inner cavity of the base box 4. The upper part of the lifting arm 7 passes through the first guide grooves 5 and extends to the outside of the base box 4. The outer wall of the lifting arm 7 and the inner wall of the first guide groove 5 are in sliding fit to ensure the guiding nature of the movement of the lifting arm 7. The tops of the two sets of lifting arms 7 are fixedly connected by a horizontally set connecting arm 8.

[0028] The concave support 10 is located directly below the connecting arm 8. A pressure sensor 9 is fixedly installed between the middle of the upper outer surface of the concave support 10 and the middle of the lower outer surface of the connecting arm 8 to monitor the actual pressure applied to the film roll by the pressure roller 11 in real time. The pressure roller 11 is mounted on the lower part of the concave support 10 via a connecting shaft 16. Specifically, a bearing is provided between the connecting shaft 16 and the concave support 10, and the connecting shaft 16 is rotatably connected to the concave support 10 through the bearing, so that the pressure roller 11 can roll freely when in contact with the film roll.

[0029] The working principle and process of this utility model are as follows: During the PE film winding process, the ultrasonic sensor 6 continuously emits ultrasonic waves and receives echoes to detect the current diameter D of the film roll on the winding roller in real time, and transmits the diameter signal to the external control system (such as PLC or dedicated controller).

[0030] The control system presets the initial pressure F0 required to be applied by the pressure roller 11 at the initial winding moment (i.e., when the film roll diameter is D0), as well as the desired constant linear pressure value. Based on the principle of constant linear pressure, the control system dynamically calculates the target pressure F required to be applied by the pressure roller 11 at the current diameter D according to the formula F = F0 · (D / D0).

[0031] Subsequently, the control system sends a control signal to the hydraulic rod 12 to drive its piston rod to extend and retract, thereby driving the lifting plate 14, lifting arm 7, connecting arm 8, pressure sensor 9, inverted concave bracket 10 and pressure roller 11 to rise and fall as a whole.

[0032] During this process, pressure sensor 9 monitors and feeds back the actual pressure value applied by pressure roller 11 to the control system in real time. The control system compares the feedback actual pressure value with the calculated target pressure value, and adjusts the control signal to hydraulic rod 12 in real time according to the deviation value, forming a closed-loop control circuit until the actual pressure value accurately reaches the target pressure value.

[0033] Through the above process, it is ensured that the linear pressure exerted by the pressure roller 11 on the surface of the film roll remains constant throughout the entire winding cycle, despite the continuous increase in the film roll diameter D. This effectively avoids quality problems such as film roll looseness, looseness, and uneven end faces caused by excessive pressure in the early stage of winding or insufficient linear pressure in the later stage of winding, thereby improving the winding quality of PE film.

[0034] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A PE film processing and smoothing device, comprising a substrate (1) and a PE film winding structure (3), characterized in that: A smoothing structure (2) is fixedly installed on the upper outer surface of the substrate (1). The smoothing structure (2) includes a base box (4), a first guide groove (5), an ultrasonic sensor (6), a lifting arm (7), a connecting arm (8), a pressure sensor (9), an inverted concave bracket (10), a pressure roller (11), a hydraulic rod (12), a guide rod (13), a lifting plate (14), a second guide groove (15), and a connecting shaft (16). The base box (4) is fixed on the upper outer surface of the substrate (1). The PE film winding structure (3) is installed on the upper outer surface of the base box (4). The number of the first guide groove (5), the lifting arm (7), the guide rod (13), and the lifting plate (14) are all two sets. The pressure roller (11) is located above the winding roller in the PE film winding structure (3). The pressure roller (11) is fixed on the outer wall of the connecting shaft (16). The connecting shaft (16) is installed on the lower part of the inverted concave bracket (10).

2. The PE film processing smoothing device according to claim 1, characterized in that: A bearing is provided between the connecting shaft (16) and the inverted concave bracket (10), and the connecting shaft (16) is rotatably connected to the inverted concave bracket (10) through the bearing.

3. The PE film processing smoothing device according to claim 2, characterized in that: The pressure sensor (9) is fixed between the middle of the upper outer surface of the concave bracket (10) and the middle of the lower outer surface of the connecting arm (8), and the connecting arm (8) is fixed on the upper part between the two sets of lifting arms (7).

4. The PE film processing smoothing device according to claim 3, characterized in that: Two sets of first guide grooves (5) are opened at the left and right ends of the upper outer surface of the base box (4), and the first guide grooves (5) penetrate to the upper part of the inner cavity of the base box (4). The lifting arm (7) penetrates the first guide groove (5), and the outer wall of the lifting arm (7) is slidably connected to the first guide groove (5).

5. The PE film processing smoothing device according to claim 4, characterized in that: The ultrasonic sensor (6) is fixed in the middle of the outer surface of the upper end of the base box (4), and the ultrasonic sensor (6) is located in the lower part of the winding roller in the PE film winding structure (3).

6. The PE film processing smoothing device according to claim 5, characterized in that: The hydraulic rod (12), guide rod (13) and lifting plate (14) are all located inside the base box (4). The two sets of lifting arms (7) are fixed at the left and right ends of the upper outer surface of the lifting plate (14). The two sets of second guide grooves (15) are opened on the left and right sides of the upper outer surface of the lifting plate (14), and the second guide grooves (15) penetrate to the lower outer surface of the lifting plate (14). The two sets of guide rods (13) are fixed at the left and right ends of the inner cavity of the base box (4), and the guide rods (13) penetrate the second guide grooves (15). The lifting plate (14) is slidably connected to the guide rods (13) through the second guide grooves (15). The hydraulic rod (12) is fixed between the middle of the lower end of the inner cavity of the base box (4) and the middle of the lower outer surface of the lifting plate (14).

Images