Separate winding mechanism for plastic film

Abstract

The utility model discloses a shunt winding mechanism for a plastic film, and relates to the field of film processing. The utility model discloses a plastic film shunt winding mechanism which comprises a rack, an unwinding roller which is rotatably arranged on the rack in the axis direction of the unwinding roller, two winding rollers which are parallel to each other and are rotatably arranged on the rack in the axis direction of the winding rollers, a first driving module used for driving the two winding rollers to rotate, and a tensioning assembly. The tensioning assembly comprises two tensioning frames and a second driving module, the two tensioning frames are arranged on the rack in the mode that one ends of the tensioning frames can rotate, the second driving module is used for driving the two tensioning frames to rotate, the two tensioning frames correspond to the two winding rollers in a one-to-one mode, and each winding roller is rotationally connected with the other end of the corresponding tensioning frame. According to the shunt winding mechanism, the positions of the two winding rollers on the shunt winding mechanism can be adjusted in the rotating process of the two tensioning frames, so that a film layer is tensioned and compactly wound on the winding rollers, and the shunt winding quality of a plastic film is improved.

Description

Technical Field

[0001] The present application relates to the field of film processing, and in particular to a plastic film roll separation mechanism. Background Art

[0002] In the processing of plastic film, the film needs to be blown. Due to the limitation of the blow molding process, if only a single-layer film is blown, the blow molding problem will occur. Based on this, the current processing of plastic film usually involves blowing a double-layer film first, and then rolling the film, that is, the two film layers of the plastic film are respectively wound on different rollers, and the one with better quality is selected from the two rolled film layers as the finished product of the plastic film, and the other is treated as waste.

[0003] In the prior art, operators usually use two winding rollers to wind up two film layers respectively. However, the winding roller can only play the role of winding up the film layer, and it cannot effectively tension the film layer, resulting in the film layer being wound loose on the winding roller, which greatly reduces the quality of the plastic film roll. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the present application provides a plastic film rolling mechanism capable of making the film layers of the plastic film after rolling compactly wound on a winding roller.

[0005] The present application provides a plastic film roll-splitting mechanism that adopts the following technical solution:

[0006] A plastic film unwinding mechanism comprises a frame, a unwinding roller rotatable around its own axis line direction and arranged on the frame, two winding rollers parallel to each other and rotatable around their own axis lines and arranged on the frame, and a first driving module for driving the two winding rollers to rotate. The unwinding mechanism also comprises a tensioning assembly, the tensioning assembly comprises two tensioning frames rotatable around one end thereof and arranged on the frame, and a second driving module for driving the two tensioning frames to rotate, the two tensioning frames correspond to the two winding rollers one by one, and each winding roller is rotatably connected to the other end of the corresponding tensioning frame.

[0007] By adopting the above technical solution, the two winding rollers can adjust their positions during the rotation of the two tensioning frames, so that the film layer is tensioned and compactly wound on the winding rollers, thereby improving the rolling quality of the plastic film.

[0008] In a specific possible implementation manner, the rotation axis of the tension frame is parallel to the rotation axis of the winding roller.

[0009] By adopting the above technical solution, it is effectively avoided that the film layer is twisted during the rotation of the tensioning frame, thereby affecting the winding quality on the winding roller.

[0010] In a specific possible implementation manner, the two tensioning frames rotate in opposite directions.

[0011] By adopting the above technical solution, not only can the interference between the two tensioning frames during rotation be avoided, but the two tensioning frames with opposite rotation directions can also synchronously tension the two film layers respectively wound on the two winding rollers, thereby improving the uniformity of the plastic film rolling.

[0012] In a specific possible implementation manner, two ends of the tensioning frame are respectively a rotating end and a connecting end, the rotating end is rotatably connected to the frame, and the connecting end is rotatably connected to the winding roller.

[0013] In a specific possible implementation manner, the tensioning assembly has a tensioned state and a relaxed state. When the tensioning assembly is in the tensioned state, the two connecting ends are relatively far apart; when the tensioning assembly is in the relaxed state, the two connecting ends are relatively close together.

[0014] By adopting the above technical solution, the two film layers respectively wound on the two winding rollers can be tensioned and relaxed during the state switching of the tensioning component, thereby effectively improving the rolling quality of the plastic film.

[0015] In a specific possible implementation scheme, the tensioning frame includes a first rotating shaft arranged on the frame and rotatable around its own axial direction, and two tensioning rods respectively connected to both ends of the first rotating shaft, the first rotating shaft is parallel to the winding roller, and the two tensioning rods are rotatably connected to the two end parts of the winding roller at one end away from the first rotating shaft.

[0016] By adopting the above technical solution, the two ends of the winding roller can move synchronously under the drive of the two tensioning rods, thereby ensuring that the tensioning degrees of the two sides of the film layer are the same.

[0017] In a specific possible implementation manner, the two tensioning rods constituting the same tensioning frame are parallel to each other.

[0018] By adopting the above technical solution, not only can the synchronous driving effect of the two tensioning rods on the two ends of the winding roller be further improved, but also the winding roller can be prevented from tilting during movement, thereby improving the winding quality of the film layer by the winding roller.

[0019] In a specific feasible implementation scheme, the second driving module is located between the two first rotating shafts, and includes two mutually meshing first gears and a first motor for driving one of the first gears to rotate, the rotation axis of the first gear is parallel to the rotation axis of the first rotating shaft, and a second gear is sleeved on the first rotating shaft, and the two first gears are respectively meshed with the two second gears.

[0020] By adopting the above technical solution, the two mutually meshing first gears can drive the two first rotating shafts to rotate synchronously in opposite directions, thereby realizing synchronous tensioning of the film layers on the two winding rollers by the two tensioning frames.

[0021] In a specific feasible implementation scheme, the first driving module includes a first sprocket rotatably arranged on the frame, a second motor for driving the first sprocket to rotate, and a chain, the rotation axis of the first sprocket is parallel to the rotation axis of the winding roller, the ends of the two winding rollers are respectively provided with second sprockets, the first sprocket and the two second sprockets are connected by chain transmission, the first sprocket is movably arranged and its moving direction is set at an angle to the transmission direction of the chain.

[0022] By adopting the above technical solution, the two winding rollers can rotate synchronously under the drive of the chain, and the movable first sprocket can adjust the tightness of the chain to avoid the chain interfering with the activities of the two winding rollers.

[0023] In a specific possible implementation mode, a slide groove is provided on the frame, a slidable slider is provided in the slide groove, the first sprocket is rotationally connected to the slider, and the roll-dividing mechanism further includes a third driving module for driving the slider to slide.

[0024] By adopting the above technical solution, the movement stability of the first sprocket is effectively improved.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] The two winding rollers of the roll-splitting mechanism of the present application can adjust their positions during the rotation of the two tensioning frames, thereby tensioning the film layer and making the film layer compactly wound on the winding rollers, thereby improving the roll-splitting quality of the plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the roll-dividing mechanism of an embodiment of the present application.

[0028] Figure 2 yes Figure 1 Rear view of.

[0029] Description of reference numerals:

[0030] 1. Frame; 2. Unwinding roller; 3. Rewinding roller; 4. First drive module; 41. First sprocket; 42. Second motor; 43. Chain; 5. Tensioning assembly; 51. Tensioning frame; 511. First rotating shaft; 512. Tensioning rod; 513. Second gear; 52. Second drive module; 521. First gear; 522. First motor; 523. Second rotating shaft; 6. Second sprocket; 7. Slide; 8. Slider; 9. Third drive module. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] See also Figure 1-2 As shown, a plastic film roll-splitting mechanism is shown, which includes a frame 1, an unwinding roller 2 rotatable around its own axis and arranged on the frame 1, two winding rollers 3 parallel to each other and rotatable around their own axis and arranged on the frame 1, and a first driving module 4 for driving the two winding rollers 3 to rotate. Among them, the unwinding roller 2 and the two winding rollers 3 are parallel to each other and extend in the horizontal direction respectively, the two winding rollers 3 are arranged up and down, the unwinding roller 2 is located on the side of the two winding rollers 3, the unwinding roller 2 is used to roll up the plastic film, and the two winding rollers 3 rotate synchronously and are used to roll up the two film layers of the plastic film respectively.

[0033] In this embodiment, combined with Figure 1 As shown, the reeling mechanism further includes a tensioning assembly 5, which includes two tensioning frames 51 respectively rotatable around one end thereof and arranged on the frame 1, and a second driving module 52 for driving the two tensioning frames 51 to rotate, and the two tensioning frames 51 correspond to the two winding rollers 3 one by one, and each winding roller 3 is respectively rotatably connected to the other end of the corresponding tensioning frame 51. In this way, the two winding rollers 3 can adjust their own positions during the rotation of the two tensioning frames 51, so as to tension the film layer and make the film layer compactly wound on the winding roller 3, thereby improving the reeling quality of the plastic film.

[0034] The rotation axis of the tensioning frame 51 is parallel to the rotation axis of the winding roller 3, and the rotation directions of the two tensioning frames 51 are opposite. This can not only prevent the film layer from being twisted during the rotation of the tensioning frame 51, affecting its winding quality on the winding roller 3, but also the two tensioning frames 51 with opposite rotation directions can synchronously tension the two film layers respectively wound on the two winding rollers 3, thereby improving the uniformity of the plastic film roll.

[0035] In this embodiment, the two ends of the tensioning frame 51 are respectively a rotating end and a connecting end, the rotating end is rotatably connected to the frame 1, and the connecting end is rotatably connected to the winding roller 3. The tensioning assembly 5 has a tensioning state and a relaxing state. When the tensioning assembly 5 is in the tensioning state, the two connecting ends are relatively far away; when the tensioning assembly 5 is in the relaxing state, the two connecting ends are relatively close.

[0036] When the plastic film is rolled up, if the two film layers are wound too loosely on the two winding rollers 3, the second driving module 52 drives the two tensioning frames 51 to rotate in opposite directions, so that the tensioning assembly 5 enters a tensioned state, and the two connecting ends are relatively far away from each other and drive the two winding rollers 3 away from the unwinding roller 2, thereby achieving tensioning of the film layers; if the two film layers are wound too tightly on the two winding rollers 3, the second driving module 52 drives the two tensioning frames 51 to rotate towards each other, so that the tensioning assembly 5 enters a relaxed state, and the two connecting ends are relatively close to each other and drive the two winding rollers 3 close to the unwinding roller 2, thereby achieving relaxation of the film layers.

[0037] In this embodiment, the tensioning frame 51 includes a first rotating shaft 511 rotatable around its own axis and arranged on the frame 1, and two tensioning rods 512 respectively connected to the two ends of the first rotating shaft 511, the first rotating shaft 511 is parallel to the winding roller 3, and the ends of the two tensioning rods 512 away from the first rotating shaft 511 are respectively rotatably connected to the two ends of the winding roller 3. The two ends of the winding roller 3 can move synchronously under the drive of the two tensioning rods 512, so as to ensure that the tension degree of the two sides of the film layer is the same.

[0038] Among them, the two tensioning rods 512 constituting the same tensioning frame 51 are parallel to each other and perpendicular to the winding roller 3. The two tensioning rods 512 parallel to each other can not only further improve the synchronous driving effect on the two ends of the winding roller 3, but also prevent the winding roller 3 from tilting during the movement, thereby improving the winding quality of the winding roller 3 on the film layer.

[0039] In this embodiment, the second driving module 52 is located between the two first rotating shafts 511, and includes two second rotating shafts 523 parallel to each other, two first gears 521 meshing with each other, and a first motor 522 for driving one of the first gears 521 to rotate. The rotation axis of the first gear 521 is parallel to the rotation axis of the first rotating shaft 511. The first rotating shaft 511 is sleeved with a second gear 513, and the two first gears 521 are respectively meshed with the two second gears 513. The two meshing first gears 521 can drive the two first rotating shafts 511 to rotate synchronously in opposite directions, thereby realizing the synchronous tensioning of the film layers on the two winding rollers 3 by the two tensioning frames 51.

[0040] In this embodiment, combined with Figure 2As shown, the first driving module 4 includes a first sprocket 41 rotatably arranged on the frame 1, a second motor 42 for driving the first sprocket 41 to rotate, and a chain 43. The rotation axis of the first sprocket 41 is parallel to the rotation axis of the winding roller 3. The ends of the two winding rollers 3 are respectively provided with second sprockets 6. The first sprocket 41 and the two second sprockets 6 are connected by the chain 43. The first sprocket 41 is movably arranged and its moving direction is perpendicular to the transmission direction of the chain 43. The two winding rollers 3 can rotate synchronously under the transmission of the chain 43, and the movable first sprocket 41 can adjust the tightness of the chain 43 to avoid the chain 43 from interfering with the activities of the two winding rollers 3.

[0041] A slide groove 7 is also provided on the frame 1, and the length direction of the slide groove 7 is the same as the moving direction of the first sprocket 41. A slidable slider 8 is provided in the slide groove 7. The first sprocket 41 is rotatably connected with the slider 8. The second motor 42 is provided at a side of the slider 8 away from the first sprocket 41. The roll-splitting mechanism further includes a third driving module 9 for driving the slider 8 to slide. The third driving module 9 is a cylinder provided at one end of the slide groove 7.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plastic film reeling mechanism, comprising a frame (1), a reeling roller (2) rotatable around its own axis and arranged on the frame (1), two reeling rollers (3) parallel to each other and rotatable around their own axis and arranged on the frame (1), and a first driving module (4) for driving the two reeling rollers (3) to rotate, characterized in that: The winding mechanism also includes a tensioning assembly (5), which includes two tensioning frames (51) respectively rotatable around one end thereof and arranged on the frame (1), and a second driving module (52) for driving the two tensioning frames (51) to rotate, the two tensioning frames (51) corresponding to the two winding rollers (3) one by one, and each winding roller (3) being rotatably connected to the other end of the corresponding tensioning frame (51).

2. A plastic film roll-splitting mechanism according to claim 1, characterized in that: The rotation axis of the tensioning frame (51) is parallel to the rotation axis of the winding roller (3).

3. A plastic film roll-splitting mechanism according to claim 1, characterized in that: The two tensioning frames (51) rotate in opposite directions.

4. A plastic film roll-splitting mechanism according to any one of claims 1 to 3, characterized in that: The two ends of the tensioning frame (51) are respectively a rotating end and a connecting end, the rotating end is rotationally connected to the frame (1), and the connecting end is rotationally connected to the winding roller (3).

5. A plastic film roll-splitting mechanism according to claim 4, characterized in that: The tensioning assembly (5) has a tensioned state and a relaxed state. When the tensioning assembly (5) is in the tensioned state, the two connecting ends are relatively far apart; when the tensioning assembly (5) is in the relaxed state, the two connecting ends are relatively close together.

6. A plastic film roll-splitting mechanism according to any one of claims 1 to 3, characterized in that: The tensioning frame (51) comprises a first rotating shaft (511) which is rotatable around its own axial centerline and is arranged on the frame (1), and two tensioning rods (512) which are respectively connected to the two ends of the first rotating shaft (511), the first rotating shaft (511) is parallel to the winding roller (3), and the ends of the two tensioning rods (512) which are away from the first rotating shaft (511) are respectively rotatably connected to the two end parts of the winding roller (3).

7. A plastic film roll-splitting mechanism according to claim 6, characterized in that: The two tensioning rods (512) constituting the same tensioning frame (51) are parallel to each other.

8. A plastic film roll-splitting mechanism according to claim 6, characterized in that: The second driving module (52) is located between the two first rotating shafts (511), and comprises two mutually meshing first gears (521), and a first motor (522) for driving one of the first gears (521) to rotate, wherein the rotation axis of the first gear (521) is parallel to the rotation axis of the first rotating shaft (511), and the first rotating shaft (511) is sleeved with a second gear (513), and the two first gears (521) are respectively meshed with the two second gears (513).

9. A plastic film roll-splitting mechanism according to any one of claims 1 to 3, characterized in that: The first driving module (4) comprises a first sprocket (41) rotatably arranged on the frame (1), a second motor (42) for driving the first sprocket (41) to rotate, and a chain (43); the rotation axis of the first sprocket (41) is parallel to the rotation axis of the winding roller (3); the ends of the two winding rollers (3) are respectively provided with second sprockets (6); the first sprocket (41) and the two second sprockets (6) are connected by a chain (43); the first sprocket (41) is movably arranged and its moving direction is arranged at an angle to the transmission direction of the chain (43).

10. A plastic film roll-splitting mechanism according to claim 9, characterized in that: The frame (1) is provided with a slide groove (7), a slidable slider (8) is provided in the slide groove (7), the first sprocket (41) is rotationally connected to the slider (8), and the roll-dividing mechanism further comprises a third driving module (9) for driving the slider (8) to slide.

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