Automatic polyethylene foam winding device

Abstract

The utility model discloses an automatic polyethylene foam winding device, which belongs to the technical field of foam winding and comprises a base, a winding frame arranged on the base, a winding roller rotatably arranged on the winding frame, a tension adjusting mechanism positioned on one side of the winding frame and a controller. The tension adjusting mechanism comprises a weighing sensor arranged on the base, a bottom plate placed on the weighing sensor, a movable frame capable of longitudinally moving relative to the bottom plate and a tension wheel rotationally arranged on the movable frame, a screw rod is installed on the bottom plate and is in threaded connection with the movable frame, a guide column is fixedly installed on the base and penetrates through the movable frame in a sliding mode, and the tension wheel is arranged on the guide column. A driving motor for driving the screw rod to rotate is mounted on the bottom plate; and the weighing sensor and the driving motor are electrically connected with the controller. The device can monitor the acting force of each part above the weighing sensor on the device in real time, ensures that the overall tightness degree of the polyethylene foam roll on the winding roller is consistent or tends to be consistent, and further improves the winding quality.

Description

Technical Field

[0001] This utility model relates to the field of foam winding technology, and in particular, to an automatic winding device for polyethylene foam. Background Technology

[0002] Polyethylene foam is a foamed material made of polyethylene, possessing a variety of excellent properties. It is typically manufactured through physical or chemical foaming processes, featuring a closed-cell structure that effectively provides waterproofing, moisture protection, shock absorption, sound insulation, and thermal insulation. It also exhibits good chemical resistance and environmental friendliness. The closed-cell structure of polyethylene foam gives it excellent resilience and weather resistance, enabling it to withstand corrosion from various chemicals and meeting international environmental standards. Furthermore, it is characterized by high toughness, recyclability, and strong impact resistance, making it an ideal alternative to traditional packaging materials.

[0003] The winding process of polyethylene foam is a crucial step in foam production, and the tightness of the winding during this process is an important indicator of winding quality. In actual production, as the roll diameter increases, a phenomenon of tightness on the outside and looseness on the inside of the roll occurs when the tension remains constant. To solve this problem, the industry common practice is to adjust the foam tension during the winding process. The most common method is manual tension control, that is, manually adjusting the tension amplitude in stages. However, because this method is not real-time, the continuity of tension control cannot be guaranteed, and the required precision of tension control cannot be met. It is only suitable for scenarios where the requirements for winding quality are not high.

[0004] Therefore, it is necessary to improve the foam winding device to meet the requirements of high-quality winding. Utility Model Content

[0005] The technical problem to be solved by this utility model is that in the prior art, the tension is adjusted manually in stages, which cannot be adjusted in real time, and the winding quality needs to be improved. Based on this, this utility model provides an automatic winding device for polyethylene foam.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an automatic polyethylene foam winding device, including a base, a winding frame disposed on the base, a winding roller rotatably disposed on the winding frame, a tension adjustment mechanism located on one side of the winding frame, and a controller. The tension adjustment mechanism includes a weighing sensor disposed on the base, a base plate placed on the weighing sensor, a movable frame that can move longitudinally relative to the base plate, and a tension wheel rotatably disposed on the movable frame. A screw is installed on the base plate and is threadedly connected to the movable frame. A guide post is fixedly installed on the base and slidably passes through the movable frame. A drive motor for driving the screw to rotate is installed on the base plate. The weighing sensor and the drive motor are both electrically connected to the controller.

[0007] Furthermore, the movable frame includes a movable plate and a connecting plate, there are two connecting plates, which are correspondingly installed on opposite sides of the movable plate, the tension wheel is rotatably installed between the two connecting plates, and the screw is threadedly connected to the movable plate.

[0008] Furthermore, a connecting post is fixedly connected to the lower end of the screw, and a bearing is provided between the connecting post and the base plate. The outer ring of the bearing is fixedly embedded in the base plate, and the inner ring of the bearing is fixedly sleeved on the outside of the connecting post.

[0009] Furthermore, a drive gear is fixedly mounted on the output shaft of the drive motor, and a driven gear is fixedly sleeved on the outside of the connecting column, with the driven gear meshing with the drive gear.

[0010] Furthermore, two guide posts are fixedly installed on the base, the two guide posts are located on opposite sides of the screw, and both guide posts can slide through the movable plate.

[0011] Furthermore, a through hole is provided on the base plate, the guide post passes through the through hole, and the base plate can slide relative to the guide post along the axial direction of the guide post.

[0012] Furthermore, bushings are fixedly installed on both the base plate and the movable plate, and the guide post slidably passes through the bushings.

[0013] Furthermore, a winding motor is installed on one side of the winding frame, and the winding motor is fixedly connected to one end of the winding roller.

[0014] The beneficial effects of this utility model are as follows: The automatic polyethylene foam winding device of this utility model, by setting up a weighing sensor, monitors in real time the forces acting on each component located above the weighing sensor. A controller controls the drive motor to rotate, thereby driving the movable frame downwards to reduce the tension of the polyethylene foam and ensure that the overall tension of the polyethylene foam roll on the winding roller is consistent or nearly consistent, thus improving the winding quality. Simultaneously, the use of a screw to drive the movement of the movable frame ensures high precision and allows for accurate real-time control of the frame's movement, facilitating widespread application. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a perspective view of the automatic polyethylene foam winding device of this utility model;

[0017] Figure 2 yes Figure 1 The front view of the automatic polyethylene foam winding device shown (in working condition).

[0018] Figure 3 yes Figure 1 The electrical connection relationship between the weighing sensor, drive motor and controller in the shown polyethylene foam automatic winding device is illustrated.

[0019] In the diagram: 1. Base, 2. Rewinding frame, 3. Rewinding roller, 4. Tension adjustment device, 41. Weighing sensor, 42. Base plate, 421. Through hole, 422. Bushing, 43. Movable frame, 431. Movable plate, 432. Connecting plate, 44. Tension wheel, 45. Screw, 451. Connecting column, 452. Bearing, 46. Guide column, 47. Drive motor, 471. Drive gear, 472. Driven gear, 5. Controller, 6. Rewinding motor. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] Please see Figures 1-3 This utility model provides an automatic polyethylene foam winding device, including a base 1, a winding frame 2, a winding roller 3, a tension adjustment mechanism 4, and a controller 5. The winding frame 2 is fixedly installed on the base 1, and the winding roller 3 is rotatably installed on the winding frame 2. The tension adjustment mechanism 4 is located on one side of the winding frame 2. During operation, the produced polyethylene foam is wound onto the winding roller 3 after passing through the tension adjustment mechanism 4.

[0022] In this embodiment, the tension adjustment mechanism 4 includes a weighing sensor 41, a base plate 42, a movable frame 43, and a tension wheel 44. The weighing sensor 41 is fixedly mounted on the base 1, the base plate 42 is placed on the weighing sensor 41, the movable frame 43 can move longitudinally relative to the base 42, the tension wheel 44 is rotatably mounted on the movable frame 43, a screw 45 is rotatably mounted on the base plate 42, the screw 45 is threadedly connected to the movable frame 43, a guide post 46 parallel to the screw 45 is fixedly mounted on the base 1, the guide post 46 slidably passes through the movable frame 43, and a drive motor 47 for driving the screw 45 to rotate is mounted on the base plate 42. The weighing sensor 41 and the drive motor 47 are both electrically connected to the controller 5. The weighing sensor 41 is used to monitor the total weight of the components placed above it and the downward pressure exerted by the polyethylene foam on the tension wheel 44.

[0023] In this utility model, the polyethylene foam automatic winding device is used such that after the polyethylene foam is produced by the production equipment, it is wound onto the winding roller 3. The tension adjustment mechanism 4 is placed between the production equipment and the winding roller 3, and the tension wheel 44 supports the polyethylene foam from the bottom of the polyethylene foam to adjust the tension of the polyethylene foam.

[0024] As winding continues, the roll diameter increases, and the tension of the polyethylene foam also increases. The downward pressure of the polyethylene foam on the tension wheel 44 increases. At this time, the weighing sensor 41 detects that the pressure is higher than the preset value and converts the pressure signal into an electrical signal, which is transmitted to the controller 5. After receiving the signal, the controller 5 controls the drive motor 47 to rotate, thereby driving the screw 45 to rotate. Under the limiting action of the guide post 46, the movable frame 43, together with the tension wheel 44 on it, moves downward. At this time, the tension of the polyethylene foam decreases, and its pressure on the tension wheel 44 decreases, keeping the pressure detected by the weighing sensor 41 always equal to or close to the preset value. This ensures that the overall tightness of the polyethylene foam roll on the winding roller 3 is consistent or close to consistent, thereby improving the winding quality.

[0025] Load cells typically consist of a Wheatstone bridge composed of metal resistance strain gauges. The strain gauges are bonded to an elastic body. When the elastic body is subjected to external forces (such as weight and / or pressure), it undergoes elastic deformation, causing the resistance strain gauges bonded to its surface to deform as well. This deformation changes the resistance of the strain gauges, thus affecting the balance of the Wheatstone bridge and generating an electrical signal output. Load cells are existing technology, and their specific structure will not be described in detail here.

[0026] In a preferred embodiment, the movable frame 43 includes a movable plate 431 and connecting plates 432. Two connecting plates 432 are correspondingly mounted on opposite sides of the movable plate 431. A tension wheel 44 is rotatably mounted between the two connecting plates 432. A screw 45 is threadedly connected to the movable plate 431. The movable plate 431 has a cuboid structure, and its length is arranged along the axial direction of the take-up roller 3. The tension wheel 44 is parallel to the take-up roller 3.

[0027] A connecting post 451 is fixedly connected to the lower end of the screw 45. The connecting post 451 is a smooth rod and is rotatably connected to the base plate 42. In this embodiment, a bearing 452 is provided between the connecting post 451 and the base plate 42. The outer ring of the bearing 452 is fixedly embedded in the base plate 42, and the inner ring of the bearing 452 is fixedly sleeved on the outside of the connecting post 451. By providing the bearing 452, the smooth rotation of the screw 45 is ensured.

[0028] In a preferred embodiment, a drive gear 471 is fixedly mounted on the output shaft of the drive motor 47, and a driven gear 472 is fixedly sleeved on the outside of the connecting column 451. The driven gear 472 meshes with the drive gear 471. When working, the drive motor 47 is started, which drives the drive gear 471. Under the action of the driven gear 472, the connecting column 451 can be driven to rotate, thereby driving the screw 45 to rotate.

[0029] In this embodiment, two guide posts 46 are fixedly installed on the base 1. The two guide posts 46 are located on opposite sides of the screw 45. Both guide posts 46 can slide through the movable plate 431. By setting two guide posts 46, the movable plate 431 is limited from both sides, which improves the movement stability of the movable plate 431.

[0030] In addition, a through hole 421 is provided on the base plate 42, and the guide post 46 passes through the through hole 421. The base plate 42 can slide relative to the guide post 46 along the axial direction of the guide post 46. The connection between the guide post 46 and the base plate 42 plays a limiting role for the base plate 42, which can effectively prevent the base plate 42 from rotating relative to the load cell 41, thereby enhancing the stability of the base plate 42 placed on the load cell 41.

[0031] In a preferred embodiment, bushings 422 are fixedly installed on both the base plate 42 and the movable plate 431. The bushings 422 on the base plate 42 and the bushings 422 on the movable plate 431 are coaxially arranged. The guide post 46 slidably passes through the bushing 422. The bushing 422 can reduce the friction between the guide post 46 and the base plate 42 and the movable plate 431, which helps to reduce the wear of parts. When the bushing 422 is worn, it can be replaced. This facilitates maintenance and greatly extends the service life of the base plate 42 and the movable plate 431.

[0032] In this embodiment, a winding motor 6 is installed on one side of the winding frame 2. The winding motor 6 is fixedly connected to one end of the winding roller 3 and is used to drive the winding roller 3 to rotate in order to wind up the polyethylene foam.

[0033] This utility model discloses an automatic polyethylene foam winding device. By incorporating a weighing sensor 41, the device monitors in real-time the forces acting on various components located above the sensor. A controller 5 controls the rotation of a drive motor 47, which in turn drives a movable frame 43 downwards. This reduces the tension of the polyethylene foam, ensuring that the overall tension of the polyethylene foam roll on the winding roller 3 is consistent or nearly consistent, thereby improving winding quality. Simultaneously, the movement of the movable frame 43 is driven by the rotation of a screw 45, providing high precision and enabling accurate real-time control of its movement, facilitating widespread application.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automatic polyethylene foam winding device, characterized in that: The device includes a base, a winding frame mounted on the base, a winding roller rotatably mounted on the winding frame, a tension adjustment mechanism located on one side of the winding frame, and a controller. The tension adjustment mechanism includes a load cell mounted on the base, a base plate placed on the load cell, a movable frame that can move longitudinally relative to the base plate, and a tension wheel rotatably mounted on the movable frame. A screw is mounted on the base plate and threadedly connected to the movable frame. A guide post is fixedly mounted on the base and slidably passes through the movable frame. A drive motor for driving the screw to rotate is mounted on the base plate. The load cell and the drive motor are both electrically connected to the controller.

2. The automatic polyethylene foam winding device as described in claim 1, characterized in that: The movable frame includes a movable plate and a connecting plate. There are two connecting plates, which are installed on opposite sides of the movable plate. The tension wheel is rotatably installed between the two connecting plates. The screw is threadedly connected to the movable plate.

3. The automatic polyethylene foam winding device as described in claim 1, characterized in that: A connecting post is fixedly connected to the lower end of the screw. A bearing is provided between the connecting post and the base plate. The outer ring of the bearing is fixedly embedded in the base plate, and the inner ring of the bearing is fixedly sleeved on the outside of the connecting post.

4. The automatic polyethylene foam winding device as described in claim 3, characterized in that: A drive gear is fixedly mounted on the output shaft of the drive motor, and a driven gear is fixedly sleeved on the outside of the connecting column. The driven gear meshes with the drive gear.

5. The automatic polyethylene foam winding device as described in claim 2, characterized in that: Two guide posts are fixedly installed on the base. The two guide posts are located on opposite sides of the screw, and both guide posts can slide through the movable plate.

6. The automatic polyethylene foam winding device as described in claim 5, characterized in that: The base plate has a through hole, the guide post passes through the through hole, and the base plate can slide relative to the guide post along the axial direction of the guide post.

7. The automatic polyethylene foam winding device as described in claim 6, characterized in that: Both the base plate and the movable plate are fixedly installed with bushings, and the guide post can slide through the bushings.

8. The automatic polyethylene foam winding device as described in claim 1, characterized in that: A winding motor is installed on one side of the winding frame, and the winding motor is fixedly connected to one end of the winding roller.

Images