Automatic film winding device with wind-up roller pressure control function

Abstract

The utility model relates to the field of winding film winding devices, and discloses an automatic winding film device with a winding roller pressure control function, which comprises a rack (1), and a winding roller (2) and a winding air expansion shaft (3) are mounted on the rack (1); the two ends of the rolling air swelling shaft (3) are installed on the machine frame (1). The rolling air expansion shaft (3) is connected with an air cylinder (4), the air cylinder (4) drives the rolling air expansion shaft (3) to move close to the rolling roller (2) or away from the rolling roller (2) on the rack (1), the rolling air expansion shaft (3) is connected with a first electromagnetic valve (5) and a second electromagnetic valve (6), the first electromagnetic valve (5) and the second electromagnetic valve (6) are arranged in parallel, and the second electromagnetic valve (6) is connected with an air pressure adjusting device (7). By means of the air pressure adjusting device, the pressure output of the air cylinder can be adjusted carefully, it is guaranteed that the contact pressure between the rolling air swelling shaft and the rolling roller is moderate, and therefore the flatness and attractiveness of a rolled film are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of winding film reeling devices, in particular to an automatic winding film device with reeling roller pressure control. Background Art

[0002] In the production process of automatic wrapping film, precise control of the winding roller is a key factor in ensuring product quality and production efficiency. In the prior art, the pressure control of the winding roller usually relies on simple adjustment of the mechanical structure or pneumatic system, lacking the ability to finely adjust the pressure. If the adjusted pressure is too large, this may cause wrinkles, unevenness or damage to the film during the winding process, affecting the quality of the final product. If the adjusted pressure is too small, the winding air shaft will not be able to return to its position, and production activities cannot proceed normally. Therefore, a winding roller pressure control device is needed, which is conducive to improving production efficiency while ensuring the winding quality, making the winding smoother and more beautiful. Summary of the invention

[0003] The utility model aims at the shortcomings of the prior art and provides an automatic film wrapping device with a winding roller pressure control.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] The automatic film wrapping device with winding roller pressure control comprises a frame, on which a winding roller and a winding air expansion shaft are installed; both ends of the winding air expansion shaft are installed on the frame;

[0006] The winding air-expanding shaft is connected to a cylinder, and the cylinder drives the winding air-expanding shaft to move on the frame close to or away from the winding roller. The winding air-expanding shaft has a return state when moving close to the winding roller, and a winding state when rolling the film close to the winding roller; the characteristic is that: the winding air-expanding shaft is connected to a solenoid valve 1 and a solenoid valve 2, the solenoid valve 1 and the solenoid valve 2 are arranged in parallel, and the solenoid valve 2 is connected to an air pressure regulating device;

[0007] When the winding air-expanding shaft is in the return state, solenoid valve 2 is closed, solenoid valve 1 is opened, and the cylinder is connected to the passage where solenoid valve 1 is located; when the winding air-expanding shaft is in the winding state, solenoid valve 2 is opened, solenoid valve 1 is closed, and the cylinder is connected to the air pressure regulating device of the passage where solenoid valve 2 is located. By switching the two solenoid valves 2, the cylinder is quickly switched to provide a higher pressure or a smaller, adjustable pressure to the winding air-expanding shaft. The winding air-expanding shaft is driven by the cylinder to move closer to or away from the winding roller, and the precise adjustment of the winding pressure is achieved in conjunction with the control of the solenoid valve. The parallel setting of solenoid valve 1 and solenoid valve 2, in conjunction with the air pressure regulating device, provides two different pressure control modes to meet the different needs of the two production processes.

[0008] Preferably, when solenoid valve 1 is opened, solenoid valve 2 is closed, and the cylinder is connected to the passage of solenoid valve 1. The cylinder provides a large pressure to make the winding air-expanding shaft return quickly to avoid the violent shaking caused by the air-expanding shaft not pressing the winding shaft. The return state design of the winding air-expanding shaft, in conjunction with the control of solenoid valve 1, realizes the rapid return of the air-expanding shaft and improves production efficiency. When the winding air-expanding shaft and the winding shaft are pressed, switch solenoid valve 2 to open, solenoid valve 1 to close, and the air pressure regulating device connected to solenoid valve 2 plays a role in regulating the cylinder pressure, which can make the winding air-expanding shaft give a little pressure or contact but no pressure between the winding air-expanding shaft and the winding roller when winding, so that the film can be retracted beautifully. Cylinders for pushing the two sides of the winding air-expanding shaft are provided on both sides of the frame.

[0009] Preferably, the cylinder has an outward thrust hole and a back-pressure hole, and the outward thrust holes and back-pressure holes of the cylinders on both sides are connected through an air source control solenoid valve, the input port of the air source control solenoid valve is connected to the outward thrust holes of the left and right cylinders, and the output port of the air source control solenoid valve is connected to the back-pressure holes of the left and right cylinders, so as to adjust the thrust of the cylinders on the left and right sides to be the same.

[0010] Preferably, solenoid valve 1 is a normally closed solenoid valve, and solenoid valve 2 is a normally open solenoid valve. Normally closed solenoid valve: when the air-expanding shaft goes back under the drive of the cylinder, solenoid valve 2 is closed, and solenoid valve 1 is opened. The cylinder applies a greater pressure to the air-expanding shaft to move toward the direction of the winding roller. The unregulated cylinder pressure is large enough, and the position will not be out of place due to insufficient pressure provided to the air-expanding shaft. Normally open solenoid valve: when the air-expanding shaft is winding, solenoid valve 2 is opened, and the normally closed solenoid valve is closed. The pressure regulating valve can adjust the pressure so that the pressure of the air-expanding shaft pressing the winding roller will not be too large or too small, thereby adjusting the tension of the rolled film during winding, which will not be too large to cause the film to break, nor too small to cause the winding to be too loose.

[0011] Preferably, the first solenoid valve is a normally closed two-position two-way solenoid valve, and the second solenoid valve is a normally open two-position two-way solenoid valve.

[0012] Preferably, a guide groove is provided on the frame, and the winding air-expanding shaft is installed in the guide groove of the frame through a slider guide, and the output end of the cylinder is connected to the slider. The installation method of the guide groove and the slider ensures the stable movement of the winding air-expanding shaft and improves the winding accuracy.

[0013] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0014] The utility model has an automatic film wrapping device with winding roller pressure control, which realizes the precise adjustment of the winding air shaft to the winding roller pressure through the precise control of the cylinder by the solenoid valve. The existence of the solenoid valve can make the cylinder quickly switch between the return state and the winding state, thereby improving production efficiency. At the same time, through the air pressure regulating device, the pressure output of the cylinder can be finely adjusted to ensure that the contact pressure between the winding air shaft and the winding roller is moderate, thereby ensuring the flatness and aesthetics of the film roll.

[0015] In addition, the synchronous control of the cylinders on both sides ensures the stability during the winding process, the type selection of the solenoid valve provides flexible control logic, and the guide groove installation method improves the winding accuracy. Overall, the device of the present invention effectively solves the problems of inaccurate pressure control of the winding roller and cumbersome operation in the prior art through its innovative design, and significantly improves the automation level and product quality of the winding film production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the automatic wrapping film device of the utility model.

[0018] Figure 3 yes Figure 2 A partial enlarged view of middle A.

[0019] Figure 4 It is a structural block diagram of the connection of the utility model.

[0020] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. frame; 11. guide groove; 12. slider; 2. winding roller; 3. winding air expansion shaft; 4. cylinder; 41. outward push air hole; 42. back pressure air hole; 5. solenoid valve 1; 6. solenoid valve 2; 7. air pressure regulating device; 8. air source control solenoid valve. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Example 1

[0023] Automatic film wrapping device with winder pressure control, such as Figure 1-4As shown, it includes a frame 1, on which a winding roller 2 and a winding air-inflating shaft 3 are installed; both ends of the winding air-inflating shaft 3 are installed on the frame 1; the winding air-inflating shaft 3 is connected to the cylinder 4, and the cylinder 4 drives the winding air-inflating shaft 3 on the frame 1 to move close to the winding roller 2 or away from the winding roller 2, and the winding air-inflating shaft 3 has a return state when moving toward the winding roller 2, and a winding state when the film is rolled against the winding roller 2; it is characterized in that: the winding air-inflating shaft 3 is connected to an electromagnetic valve 1 5 and an electromagnetic valve 2 6, the electromagnetic valve 1 5 and the electromagnetic valve 2 6 are arranged in parallel, and the electromagnetic valve 2 6 is connected to an air pressure regulating device 7; the cylinder pressure regulation can be a pressure gauge or an air pressure regulating valve, etc., which can play a role in air pressure regulation. Conventional technical means of personnel in this field are not exhaustive here.

[0024] When the winding air-inflating shaft 3 is in the return state, the solenoid valve 26 is closed, the solenoid valve 15 is opened, and the cylinder 4 is connected to the passage where the solenoid valve 15 is located; when the winding air-inflating shaft 3 is in the winding state, the solenoid valve 26 is opened, the solenoid valve 15 is closed, and the cylinder 4 is connected to the air pressure regulating device 7 of the passage where the solenoid valve 26 is located.

[0025] The left and right sides of the frame 1 are provided with cylinders 4 for driving the two sides of the winding air expansion shaft 3. The cylinder can theoretically be replaced by a hydraulic cylinder, which has a lower cost than the motor structure.

[0026] The cylinder 4 has an outward thrust air hole 41 and a back-pressure air hole 42. The outward thrust air hole 41 and the back-pressure air hole 42 of the cylinders 4 on both sides are connected through an air source control solenoid valve 8. The input port of the air source control solenoid valve 8 is connected to the outward thrust air hole 41 of the cylinders 4 on the left and right sides, and the output port of the air source control solenoid valve 8 is connected to the back-pressure air hole 42 of the cylinders 4 on the left and right sides, which is used to adjust the thrust of the cylinders 4 on the left and right sides to be the same.

[0027] Solenoid valve 1 5 is a normally closed solenoid valve, and solenoid valve 2 6 is a normally open solenoid valve.

[0028] Solenoid valve 1 5 is a normally closed two-position two-way solenoid valve, and solenoid valve 2 6 is a normally open two-position two-way solenoid valve.

[0029] A guide groove 11 is provided on the frame 1 , and the winding air expansion shaft 3 is guided and installed in the guide groove 11 of the frame 1 through a slider 12 , and the output end of the cylinder 4 is connected to the slider 12 .

[0030] Working principle:

[0031] The plastic film is wound on the winding roller 2, and then the film is transferred to the winding air expansion shaft 3 through the rotation of the winding roller 2.

[0032] Outside the paper tube, after the winding air-inflating shaft 3 is put on the paper tube, it needs to return to the position of the winding roller 2 to wind the film material. The cylinder 4 needs to use a large pressure to press the winding air-inflating shaft 3 to the winding roller 2, and the passage where the electromagnetic valve 15 is located is opened. The back pressure air hole 42 of the cylinder 4 is connected to the normally closed electromagnetic valve. After the normally closed electromagnetic valve is opened, the cylinder 4 will press the winding air-inflating shaft 3 according to the preset pressure and the maximum pressure of the cylinder 4. Ensure that the thrust is large enough to return the winding air-inflating shaft 3.

[0033] When the rewinding air-inflating shaft 3 is attached to the rewinding roller 2 for rewinding, the plastic film can rotate on the surface of the rewinding air-inflating shaft 3 and accumulate plastic film rolls on its surface. The rewinding roller 2 moves actively, and the rewinding air-inflating shaft 3 is driven by it to rotate for rewinding. At this time, the solenoid valve 1 connected to the cylinder 4 is disconnected and in a closed state, the solenoid valve 2 6 is opened, and the air pressure regulating device 7 connected to it is also connected, so that the pressure output by the cylinder 4 can be adjusted. The pressure provided by the cylinder 4 is relatively small. In theory, the outer surface of the film-coated rewinding air-inflating shaft 3 should be kept in contact with the outermost surface of the rewinding roller 2 but without pressure, so as to ensure the flatness and aesthetics of the film roll on the rewinding air-inflating shaft 3.

[0034] When the winding is completed, the solenoid valve 1 5 is opened again, and the solenoid valve 2 6 is closed, so that the air expansion shaft returns to its position quickly.

[0035] In the description of the present utility model, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. An automatic film wrapping device with a winding roller pressure control, comprising a frame (1), on which a winding roller (2) and a winding air expansion shaft (3) are mounted; both ends of the winding air expansion shaft (3) are mounted on the frame (1); The rewinding air-inflating shaft (3) is connected to a cylinder (4), and the cylinder (4) drives the rewinding air-inflating shaft (3) to move on the frame (1) toward or away from the rewinding roller (2). The rewinding air-inflating shaft (3) has a return state when moving toward the rewinding roller (2), and a rewinding state when rolling the film against the rewinding roller (2); the characteristics are: The winding air expansion shaft (3) is connected to a solenoid valve 1 (5) and a solenoid valve 2 (6), the solenoid valve 1 (5) and the solenoid valve 2 (6) are arranged in parallel, and the solenoid valve 2 (6) is connected to a gas pressure regulating device (7); When the rewinding air-expanding shaft (3) is in the return state, the solenoid valve 2 (6) is closed, the solenoid valve 1 (5) is opened, and the cylinder (4) is connected to the passage where the solenoid valve 1 (5) is located; when the rewinding air-expanding shaft (3) is in the rewinding state, the solenoid valve 2 (6) is opened, the solenoid valve 1 (5) is closed, and the cylinder (4) is connected to the air pressure regulating device (7) of the passage where the solenoid valve 2 (6) is located.

2. The automatic film wrapping device with winding roller pressure control according to claim 1, characterized in that: Air cylinders (4) for pushing the two sides of the winding air expansion shaft (3) are arranged on both sides of the frame (1).

3. The automatic film wrapping device with winding roller pressure control according to claim 2, characterized in that: The cylinder (4) has an outward thrust air hole (41) and a back pressure air hole (42). The outward thrust air hole (41) and the back pressure air hole (42) of the cylinders (4) on both sides are connected via an air source control electromagnetic valve (8). The input port of the air source control electromagnetic valve (8) is connected to the outward thrust air hole (41) of the cylinders (4) on both sides, and the output port of the air source control electromagnetic valve (8) is connected to the back pressure air hole (42) of the cylinders (4) on both sides, so as to adjust the thrust of the cylinders (4) on both sides to be the same.

4. The automatic film wrapping device with winding roller pressure control according to claim 1, characterized in that: Solenoid valve 1 (5) is a normally closed solenoid valve, and solenoid valve 2 (6) is a normally open solenoid valve.

5. The automatic film wrapping device with winding roller pressure control according to claim 4, characterized in that: Solenoid valve 1 (5) is a normally closed two-position two-way solenoid valve, and solenoid valve 2 (6) is a normally open two-position two-way solenoid valve.

6. The automatic film wrapping device with winding roller pressure control according to claim 1, characterized in that: A guide groove (11) is provided on the frame (1), and the winding air expansion shaft (3) is guided and installed in the guide groove (11) of the frame (1) through a slider (12), and the output end of the cylinder (4) is connected to the slider (12).

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