Winding device for preparing PE inner film bag

Abstract

A winding device for preparing a PE inner film bag relates to the technical field of winding devices and comprises a base, a supporting frame is welded and fixed above the base, a winding roller is rotatably mounted at the upper end of the supporting frame, a thickness detection mechanism is arranged above the winding roller, the thickness detection mechanism comprises a fixing plate, and the fixing plate is fixedly connected with the supporting frame. A movable plate is installed in the fixed plate, the movable plate and the fixed plate are in sliding limiting, a pressure sensor is installed in the middle of the upper end face of the movable plate, reset springs are arranged on the two sides of the pressure sensor, and the two ends of the reset springs are fixed to the fixed plate and the movable plate correspondingly; according to the scheme, the problem that the rolling uniformity of the PE film is affected due to the fact that the thickness obtained according to the number of rolling turns in the rolling process of the PE film is prone to deviating from the standard thickness is solved.

Description

Technical Field

[0001] This utility model relates to the field of winding device technology, specifically a winding device for preparing PE inner film bags. Background Technology

[0002] The winding device for producing PE inner film bags is one of the key pieces of equipment on the PE inner film bag production line. It is mainly used to orderly and compactly wind up the produced PE inner film bags for subsequent packaging, transportation, and use. With the widespread application of PE inner film bags in packaging, agriculture, and industry, the requirements for winding devices are becoming increasingly stringent. They must not only improve production efficiency but also ensure the quality and appearance of the inner film bags.

[0003] For example, the Chinese authorized patent CN205916819U, entitled "A Film Winding Device", includes an air shaft and a winding drum. One end of the air shaft is fixedly connected to the motor shaft, and the other end is provided with an air inlet. The winding drum is sleeved on the outer surface of the air shaft. The winding drum is a hollow cylinder with an axial opening. The air shaft has at least one clearance hole that cooperates with a long strip-shaped pneumatic protrusion on the air shaft. The position of the pneumatic protrusion corresponds to the position of the axial opening of the winding drum. When the air shaft is inflated, the pneumatic protrusion presses and fixes the winding drum. When the air shaft is deflated, there is a gap between the winding drum and the air shaft.

[0004] In practical applications, the thickness of the PE film is mostly determined by the number of rotations of the winding roller. However, there is a tendency for misalignment during rotation, which leads to a deviation between the thickness obtained from the number of rotations and the standard thickness, thus affecting the uniformity of PE film winding and failing to meet current requirements. Therefore, we propose a winding device for preparing PE inner film bags. Utility Model Content

[0005] The purpose of this invention is to provide a winding device for preparing PE inner film bags, so as to solve the problem mentioned in the background art that the thickness of PE film obtained according to the number of winding turns during the winding process is prone to deviation from the standard thickness, thereby affecting the uniformity of PE film winding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a winding device for preparing PE inner film bags, comprising a base, a support frame welded and fixed above the base, a winding roller rotatably mounted on the upper end of the support frame, a thickness detection mechanism above the winding roller, the thickness detection mechanism comprising a fixed plate, a movable plate installed inside the fixed plate, and the movable plate slidingly limiting the fixed plate, a pressure sensor installed at the middle position of the upper surface of the movable plate, and return springs provided on both sides of the pressure sensor, with the two ends of the return springs respectively fixed to the fixed plate and the movable plate.

[0007] Preferably, a winding motor is fixedly installed on one side of the support frame, the output shaft of the winding motor is keyed to the winding roller, the output end of the pressure sensor is connected to the microcontroller, and the output end of the microcontroller is connected to the winding motor.

[0008] Preferably, a first mounting bracket is provided at the upper end of one side of the support frame, and the first mounting bracket is welded and fixed to the support frame. An electric push rod is installed on the upper end surface of the crossbeam of the first mounting bracket, and the movable end of the electric push rod passes through the first mounting bracket and is fixed to the upper end surface of the fixing plate.

[0009] Preferably, a rotating roller is installed at the bottom of the movable plate, and the rotating roller is connected to the movable plate via a rotating shaft.

[0010] Preferably, the front end of the take-up roller is provided with a tension roller, and two sets of tension rollers are provided.

[0011] Preferably, a second mounting bracket is installed at the front end of one side of the support frame, and the second mounting bracket is welded and fixed to the support frame. A spacing adjustment mechanism is fixedly provided at the front end of the inner side of the second mounting bracket. A limit groove is provided on one side of the spacing adjustment mechanism. A double threaded transmission rod is rotatably installed inside the spacing adjustment mechanism. Sliding blocks are symmetrically installed on the upper and lower sides of the double threaded transmission rod. The inner hole of the sliding block is threadedly connected to the double threaded transmission rod. One side of the sliding block extends to the outside of the limit groove, and one side of the sliding block is connected to the tension roller through a rotating shaft. A servo motor is installed at the upper end of the spacing adjustment mechanism, and the output shaft of the servo motor is fixed to the upper end of the double threaded transmission rod.

[0012] Preferably, the length of the tension roller is greater than that of the take-up roller.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model incorporates a thickness detection mechanism. During the winding motor operation, the PE film gradually winds around the outside of the winding film and comes into contact with the rotating roller at the bottom of the thickness detection mechanism. The roller's design allows it to adhere closely to the PE film, while the rotation caused by friction effectively reduces the impact on the film body. As the PE film thickness increases, the rotating roller drives the movable plate to extend continuously into the fixed plate. When the pressure sensor at the top of the movable plate contacts the top of the inner cavity of the fixed plate, it indicates that the PE film has reached the set winding thickness. The controller then shuts off the winding motor, thus achieving the winding of the PE film in the roll. This solves the problem that the thickness obtained from the number of winding turns during the PE film winding process easily deviates from the standard thickness, thereby affecting the uniformity of PE film winding.

[0015] 2. This utility model features two sets of tension rollers. The PE film passes through the lower tension roller, bends into an S-shape, and passes through the upper tension roller until it is wound onto the take-up roller. By activating the servo motor, its output shaft drives the double-threaded transmission rod to rotate. Under friction with the sliding block, the rotational motion is converted into linear motion. The sliding block drives the two sets of take-up rollers to move vertically towards each other, thereby adjusting the distance between the two take-up rollers. This process not only ensures the smooth transmission of the film but also maintains the appropriate tension of the film through the adjustment of the tension rollers, avoiding damage to the film material or uneven winding caused by uneven tension. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a schematic diagram of the thickness detection mechanism of this utility model;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is a schematic diagram of the spacing adjustment mechanism of this utility model.

[0020] In the diagram: 1. Base; 2. Support frame; 3. Take-up roller; 4. Take-up motor; 5. First mounting frame; 6. Electric push rod; 7. Thickness detection mechanism; 8. Spacing adjustment mechanism; 9. Tension roller; 10. Limiting groove; 11. Second mounting frame; 12. Fixed plate; 13. Movable plate; 14. Rotary roller; 15. Pressure sensor; 16. Return spring; 17. Servo motor; 18. Double threaded transmission rod; 19. Sliding block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of a winding device for preparing PE inner film bags, including a base 1, a support frame 2 welded and fixed above the base 1, a winding roller 3 rotatably mounted on the upper end of the support frame 2, a thickness detection mechanism 7 above the winding roller 3, the thickness detection mechanism 7 including a fixed plate 12, a movable plate 13 installed inside the fixed plate 12, and the movable plate 13 slidingly limiting the fixed plate 12, a pressure sensor 15 installed at the middle position of the upper end face of the movable plate 13, return springs 16 arranged on both sides of the pressure sensor 15, and the two ends of the return springs 16 are respectively fixed to the fixed plate 12 and the movable plate 13, and a winding motor 4 is fixedly mounted on one side of the support frame 2 for winding. The output shaft of motor 4 is keyed to the winding roller 3. The output end of pressure sensor 15 is connected to the microcontroller, and the output end of the microcontroller is connected to the winding motor 4. During the operation of winding motor 4, PE film gradually winds around the outside of winding roller 3 and comes into contact with the bottom of thickness detection mechanism 7. As the thickness of PE film increases, movable plate 13 extends into fixed plate 12. When pressure sensor 15 at the top of movable plate 13 contacts the top of the inner cavity of fixed plate 12, it indicates that the PE film has reached the set winding thickness. By turning off winding motor 4 through controller, the winding of PE film in the roll can be realized, which solves the problem that the thickness of PE film obtained by the number of winding turns during the winding process is prone to deviation from the standard thickness.

[0023] Please see Figure 1 and Figure 2 A first mounting bracket 5 is provided on the upper end of one side of the support frame 2, and the first mounting bracket 5 is welded and fixed to the support frame 2. An electric push rod 6 is installed on the upper end surface of the crossbeam of the first mounting bracket 5, and the movable end of the electric push rod 6 passes through the first mounting bracket 5 and is fixed to the upper end surface of the fixing plate 12, so as to realize the adjustment of the height of the thickness detection mechanism 7, thereby changing the detection position of the PE film thickness and further improving the flexibility.

[0024] Please see Figure 1 and Figure 2 A rotating roller 14 is installed at the bottom of the movable plate 13, and the rotating roller 14 is connected to the movable plate 13 through a rotating shaft. The design of the rotating roller 14 allows it to fit with the PE film, and the rotation caused by friction can effectively reduce the impact on the film body.

[0025] Please refer to the figure. A tension roller 9 is provided at the front end of the take-up roller 3, and two sets of tension rollers 9 are provided. A second mounting bracket 11 is installed at the front end of one side of the support frame 2, and the second mounting bracket 11 is welded and fixed to the support frame 2. A spacing adjustment mechanism 8 is fixedly installed at the front end of the inner side of the second mounting bracket 11. A limit groove 10 is provided on one side of the spacing adjustment mechanism 8. A double-threaded transmission rod 18 is rotatably installed inside the spacing adjustment mechanism 8. Sliding blocks 19 are symmetrically installed on the upper and lower parts of the double-threaded transmission rod 18, and the inner hole of the sliding block 19 is threadedly connected to the double-threaded transmission rod 18. One side of the sliding block 19 extends to the outside of the limit groove 10, and one side of the sliding block 19 is connected to the tension roller 9 via a rotating shaft. The spacing adjustment... A servo motor 17 is installed at the upper end of the mechanism 8, and the output shaft of the servo motor 17 is fixed to the upper end of the double threaded transmission rod 18. The PE film passes through the lower tension roller, bends into an S-shape, and passes through the upper tension roller 9 until it is wound onto the take-up roller 3. By turning on the servo motor 17, its output shaft drives the double threaded transmission rod 18 to rotate. Under the friction with the sliding block 19, the rotational motion is converted into linear motion. The sliding block 19 drives the two sets of tension rollers 9 to move vertically towards each other, thereby realizing the adjustment of the distance between the two tension rollers 9. This process not only ensures the smooth transmission of the film, but also maintains the appropriate tension of the film through the adjustment of the tension rollers 9, avoiding damage to the film material or uneven winding caused by uneven tension.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A winding device for the production of PE inner film bags, comprising a base (1), characterized in that: The upper part of the base (1) is welded with a support frame (2), the upper end of the support frame (2) is rotatably installed with a winding roller (3), the upper part of the winding roller (3) is provided with a thickness detection mechanism (7), the thickness detection mechanism (7) comprises a fixed plate (12), the inside of the fixed plate (12) is installed with a movable plate (13), and the movable plate (13) is slidingly limited with the fixed plate (12), the middle position of the upper end surface of the movable plate (13) is installed with a pressure sensor (15), the two sides of the pressure sensor (15) are provided with a reset spring (16), and the two ends of the reset spring (16) are respectively fixed with the fixed plate (12) and the movable plate (13).

2. A winding device for preparing PE inner film bag according to claim 1, characterized in that: The side of the support frame (2) is fixedly installed with a winding motor (4), the output shaft of the winding motor (4) is key-connected with the winding roller (3), the output end of the pressure sensor (15) is connected to a single-chip microcomputer, and the output end of the single-chip microcomputer is connected to the winding motor (4).

3. A winding device for preparing PE inner film bag according to claim 1, characterized in that: The upper end of the side of the support frame (2) is provided with a first mounting bracket (5), and the first mounting bracket (5) is welded with the support frame (2), the upper end surface of the first mounting bracket (5) is installed with an electric push rod (6), and the movable end of the electric push rod (6) penetrates the first mounting bracket (5) and is fixed with the upper end surface of the fixed plate (12).

4. The winding device for preparing PE inner film bag according to claim 1, characterized in that: The bottom of the movable plate (13) is installed with a rotating roller (14), and the rotating roller (14) is connected with the movable plate (13) through a rotating shaft.

5. A winding device for making PE inner film bag according to claim 1, characterized in that: The front end of the winding roller (3) is provided with a tension roller (9), and the tension roller (9) is provided with two groups.

6. A winding device for producing PE inner film bags according to claim 5, characterized in that: The front end of the side of the support frame (2) is installed with a second mounting bracket (11), and the second mounting bracket (11) is welded with the support frame (2), the front end of the inner side of the second mounting bracket (11) is fixedly provided with a spacing adjusting mechanism (8), one side of the spacing adjusting mechanism (8) is provided with a limiting groove (10), a double-thread transmission rod (18) is rotatably installed in the spacing adjusting mechanism (8), upper and lower symmetrical sliding blocks (19) are installed on the outside of the double-thread transmission rod (18), the inner holes of the sliding blocks (19) are threadedly connected with the double-thread transmission rod (18), one side of the sliding block (19) extends to the outside of the limiting groove (10), one side of the sliding block (19) is connected with the tension roller (9) through a rotating shaft, a servo motor (17) is installed on the upper end of the spacing adjusting mechanism (8), and the output shaft of the servo motor (17) is fixed with the upper end of the double-thread transmission rod (18).

7. A winding device for producing PE inner film bags according to claim 6, characterized in that: The length of the tension roller (9) is greater than that of the winding roller (3).

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