Pneumatic eccentric roller device and winding press roller device comprising the same

Abstract

The utility model discloses a kind of pneumatic eccentric roller device and contain the winding press roller device of the pneumatic eccentric roller device, including gas expansion shaft, the outside of the gas expansion shaft, a plurality of eccentric roller units are sequentially sleeved, the eccentric roller unit includes eccentric shaft, bearing and rubber roller, rubber roller can rotate relative to eccentric shaft;The middle of the eccentric shaft is equipped with a long circular through-hole, the gas expansion shaft is arranged in long circular through-hole, a gasbag is fixed on gas expansion shaft, the outside of gasbag is equipped with the key strip corresponding with the number of eccentric roller unit, after gasbag is ventilated, key strip can move eccentric roller unit whole to the side of gas expansion shaft;The both ends of the gas expansion shaft are fixedly provided with a check ring;Between adjacent two eccentric roller units and between eccentric roller unit and check ring, are slidably separated by stop block. In the utility model, each eccentric roller unit can independently adaptively compress and support the surface of winding roller when encountering the surface of winding roller with different height.

Description

Technical Field

[0001] This utility model belongs to the field of winding machinery, and particularly relates to a pneumatic eccentric roller device and a winding pressure roller device including the pneumatic eccentric roller device. Background Technology

[0002] As a high-performance, low-cost, and lightweight product, film is increasingly used in industrial production and daily life due to technological advancements and improved living standards, bringing great convenience to both industries. Before use, film often needs to be slit and wound according to length and width requirements. During the winding process, pressure rollers are typically used to hold the winding roll in place to ensure its tightness. Subsequent processes usually have high requirements for the winding quality of the film rolls produced in the previous process, demanding that they be tightly wound and not scattered. Otherwise, problems such as difficulty in cutting, inaccurate cutting dimensions, or inaccurate printing may occur during use, affecting the quality of the final product. In actual production, because films are usually blow-molded, uneven thickness often occurs at different locations on the same film sheet. This means that during film slitting and winding, several film rolls wound side-by-side on the same take-up roller may have varying diameters, with some rolls having larger diameters and others smaller. Conversely, some sections of a single film roll may have larger diameters than others. Consequently, when the pressure roller presses against the take-up roller, it often only presses the larger diameter sections firmly, while the smaller diameter sections are not pressed properly or not pressed at all. This ultimately leads to problems with the winding tightness of some sections, affecting subsequent use or even causing them to be scrapped. Therefore, there is a need for a pressure roller device that can reliably press all positions on the take-up roller during the film winding process. Utility Model Content

[0003] The purpose of this invention is to provide a pneumatic eccentric roller device with an ingenious structure that provides good pressing and conforming properties when different roll diameters are on the same take-up roller.

[0004] This utility model is achieved through the following technical solution:

[0005] The pneumatic eccentric roller device 300 includes an air shaft 1. Several eccentric roller units 2 with the same structure are sequentially sleeved on the outer side of the air shaft 1. The eccentric roller unit 2 includes an eccentric shaft 3, a bearing 4 and a rubber roller 5 from the inside to the outside. The inner ring of the bearing 4 is fixedly connected to the eccentric shaft 3, and the outer ring of the bearing 4 is fixedly connected to the rubber roller 5. The rubber roller 5 is used to contact the take-up roller 100 and can rotate relative to the eccentric shaft 3.

[0006] The eccentric shaft 3 has an elongated oval through hole 6 in the middle. The air shaft 1 passes through the elongated oval through hole 6 and cannot rotate relative to the elongated oval through hole 6. One side of the air shaft 1 facing the elongated oval through hole has a flat surface cut out. An air bag 7 connected to an external air supply device is fixed on the flat surface. The outer side of the air bag 7 has a number of key bars 8 that are equal to the number of eccentric roller units 2. Each key bar 8 corresponds to one eccentric roller unit 2 and is located inside the eccentric roller unit 2. After the air bag 7 is ventilated, the key bars 8 can push the inner wall of the elongated oval through hole 6 on the same side to move the eccentric roller unit 2 as a whole toward one side of the air shaft 1, thereby realizing the eccentric movement of the eccentric roller unit 2 relative to the air shaft 1.

[0007] Both ends of the air shaft 1 and the outer side of the eccentric roller unit 2 are fixedly provided with retaining rings 9 for confining the eccentric roller units 2 together. The retaining rings 9 are fixedly connected to the air shaft 1. The two adjacent eccentric roller units 2 and the eccentric roller unit 2 and the retaining rings 9 are slidably separated by the stop blocks 10. After being separated by the stop blocks 10, there are gaps between the rubber rollers 5 on the two adjacent eccentric roller units 2 and between the rubber rollers 5 and the retaining rings 9 to prevent mutual interference.

[0008] Preferably, at least one limiting groove 11 parallel to the long side of the long side of the oblong through hole 6 is carved inward on the end face of both sides of the oblong through hole 6 of the eccentric shaft 3. The two adjacent eccentric roller units 2 and the eccentric roller unit 2 and the retaining ring 9 are separated by two oppositely arranged stop blocks 10 located on both sides of the long side of the oblong through hole 6. One end of the stop block 10 is fixedly connected to the limiting groove 11 on one of the eccentric shafts 3, and the other end is movably and slidably inserted into the limiting groove 11 of the adjacent eccentric shaft 3 or slidably contacting the side of the retaining ring 9.

[0009] More preferably, in this embodiment, the portion next to the end face on both sides of the long side of the elongated through hole 6 of the eccentric shaft 3 is excavated to a certain depth to form a limiting platform. One end of the stop block 10 is fixedly connected to the limiting platform on an eccentric shaft 3, and its other end can slidably abut against the limiting platform of the adjacent eccentric shaft 3 or slidably contact the side of the retaining ring 9.

[0010] Preferably, a fixed outer shell 12 is also fitted on the outer side of the air shaft 1. The fixed outer shell 12 is slidably in contact with the inner wall of the eccentric shaft 3. The key bar 8 has a T-shaped structure, with its wider side being the bottom and fixedly connected to the air bag 7. The fixed outer shell 12 is provided with a guide slot 13 that limits the movement range of the key bar 8 by limiting the movement range of the bottom of the key bar 8. The top of the key bar 8 penetrates the guide slot 13 and points towards the inner wall of the eccentric shaft 3. Through the guidance of the guide slot 13, the movable range and stability of the key bar 8 during movement can be better guaranteed.

[0011] Preferably, the rubber roller 5 is an aluminum core rubber roller.

[0012] This utility model also provides a winding pressure roller device 200, which is used to be set next to the winding roller 100. It includes two translation wall plates 20 that can move left and right relative to the winding roller 100. The two ends of the pneumatic eccentric roller device 300 are mounted between the two translation wall plates 20 by rocker arms 14, and the key bar 8 on it is kept facing the winding roller 100. The rocker arms 14 are driven to rotate by pressure roller cylinders 15 fixed on the translation wall plates 20. Specifically, the two ends of the air shaft 1 on the pneumatic eccentric roller device 300 are fixedly connected to the movable ends of the rocker arms 14.

[0013] Preferably, the fixed ends of the two rocker arms 14 are both mounted on the crossbar 16 between the two sliding wall panels 20. The two ends of the air shaft 1 on the pneumatic eccentric roller device 300 are fixedly connected to the middle of the rocker arm 14. The movable end of the pressure roller cylinder 15 fixed on the sliding wall panel 20 is connected to the movable end pin of the rocker arm 14 to drive it to rotate.

[0014] The beneficial effects of this utility model are:

[0015] This utility model's pneumatic eccentric roller device has an ingenious structure. By inserting an air shaft through an eccentric shaft with an elongated oval through hole and setting a key on the air shaft to push each eccentric roller unit to move along the long side of the elongated oval hole, and by making each eccentric roller unit move independently, each eccentric roller unit is an independent entity when in contact with the surface of the take-up roller. When encountering take-up roller surfaces with different heights, it can independently and adaptively press and support the surface of the take-up roller, thus ensuring that all surfaces on the take-up roller can be compacted during the winding process. This ensures that every roll and every part of every roll on the take-up roller is compacted, thereby guaranteeing the winding quality. The entire winding process is stable, highly practical, and worthy of promotion. Attached Figure Description

[0016] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a three-dimensional structural diagram of the pneumatic eccentric roller device according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a cross-sectional structural diagram of the pneumatic eccentric roller device in the retracted state according to an embodiment of the present invention.

[0020] Figure 4 for Figure 3Enlarged view at point B in the middle;

[0021] Figure 5 This is a side view of the pneumatic eccentric roller device in the retracted state according to an embodiment of the present invention.

[0022] Figure 6 This is a side view of the pneumatic eccentric roller device in an embodiment of the present invention when the air bladder is in a tightened state.

[0023] Figure 7 This is a three-dimensional structural diagram of the eccentric roller unit combined with the stop block;

[0024] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure;

[0025] Figure 9 for Figure 7 A schematic diagram of the side view structure;

[0026] Figure 10 This is a schematic diagram of the structure when the air bladder on the air shaft is in the retracted state and the key bar does not push the eccentric roller unit.

[0027] Figure 11 This is a schematic diagram of the structure of the key bar pushing the eccentric roller unit when the air bladder on the air shaft is in the inflated state.

[0028] Figure 12 This is a three-dimensional structural diagram of the winding pressure roller device located next to the winding roller in this embodiment;

[0029] Figure 13 for Figure 12 Front view structural diagram;

[0030] Figure 14 This is a three-dimensional structural diagram of the winding pressure roller device in this embodiment;

[0031] Figure 15 A three-dimensional structural diagram of the fixing method when the pneumatic eccentric roller device is set on the winding pressure roller device;

[0032] Figure 16 for Figure 15 Enlarged view at point C;

[0033] Figure 17 for Figure 15 A side view structural diagram. Detailed Implementation

[0034] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0035] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0036] like Figure 1-17 As shown, the pneumatic eccentric roller device 300 includes an air shaft 1. Several eccentric roller units 2 with the same structure are sequentially sleeved on the outer side of the air shaft 1. The eccentric roller unit 2 includes an eccentric shaft 3, a bearing 4 and a rubber roller 5 from the inside to the outside. The inner ring of the bearing 4 is fixedly connected to the eccentric shaft 3, and the outer ring of the bearing 4 is fixedly connected to the rubber roller 5. The rubber roller 5 is used to contact the take-up roller 100 and can rotate relative to the eccentric shaft 3.

[0037] The eccentric shaft 3 has an elongated oval through hole 6 in the middle. The air shaft 1 passes through the elongated oval through hole 6 and cannot rotate relative to the elongated oval through hole 6. One side of the air shaft 1 facing the elongated oval through hole has a flat surface cut out. An air bag 7 connected to an external air supply device is fixed on the flat surface. The outer side of the air bag 7 has a number of key bars 8 that are equal to the number of eccentric roller units 2. Each key bar 8 corresponds to one eccentric roller unit 2 and is located inside the eccentric roller unit 2. After the air bag 7 is ventilated, the key bars 8 can push the inner wall of the elongated oval through hole 6 on the same side to move the eccentric roller unit 2 as a whole toward one side of the air shaft 1, thereby realizing the eccentric movement of the eccentric roller unit 2 relative to the air shaft 1.

[0038] Both ends of the air shaft 1 and the outer side of the eccentric roller unit 2 are fixedly provided with retaining rings 9 for confining the eccentric roller units 2 together. The retaining rings 9 are fixedly connected to the air shaft 1. The two adjacent eccentric roller units 2 and the eccentric roller unit 2 and the retaining rings 9 are slidably separated by the stop blocks 10. After being separated by the stop blocks 10, there are gaps between the rubber rollers 5 on the two adjacent eccentric roller units 2 and between the rubber rollers 5 and the retaining rings 9 to prevent mutual interference.

[0039] On both sides of the long side of the oblong through hole 6 of the eccentric shaft 3, at least one limiting groove 11 parallel to the long side of the oblong through hole 6 is dug inward. The two adjacent eccentric roller units 2 and the eccentric roller unit 2 and the retaining ring 9 are separated by two oppositely arranged stop blocks 10 located on both sides of the long side of the oblong through hole 6. One end of the stop block 10 is fixedly connected to the limiting groove 11 on one of the eccentric shafts 3, and its other end can be movably and slidably inserted into the limiting groove 11 of the adjacent eccentric shaft 3 or slidably contacted with the side of the retaining ring 9.

[0040] In this embodiment, the portion next to the end face on both sides of the long side of the oblong through hole 6 of the eccentric shaft 3 is excavated to a certain depth to form a limiting platform. One end of the stop block 10 is fixedly connected to the limiting platform on an eccentric shaft 3, and its other end can slidably abut against the limiting platform of the adjacent eccentric shaft 3 or slidably contact the side of the retaining ring 9.

[0041] A fixed outer shell 12 is also fitted on the outer side of the air shaft 1. The fixed outer shell 12 is slidably in contact with the inner wall of the eccentric shaft 3. The key bar 8 has a T-shaped structure, with its wider side being the bottom and fixedly connected to the air bag 7. The fixed outer shell 12 is provided with a guide slot 13 that limits the movement range of the key bar 8 by limiting the movement range of the bottom of the key bar 8. The top of the key bar 8 penetrates the guide slot 13 and points towards the inner wall of the eccentric shaft 3. Through the guidance of the guide slot 13, the movable range and stability of the key bar 8 during movement can be better guaranteed.

[0042] The rubber roller 5 is an aluminum core rubber roller.

[0043] In this embodiment, the bearing 4 is a deep groove ball bearing, and it is limited by a combination of shaft clip and hole clip. Specifically, in this embodiment, the bearing uses a deep groove ball bearing 61913 (inner diameter 65mm, outer diameter 90mm), and the bearing is limited by a 65mm earless shaft clip and a 90mm earless hole clip.

[0044] A take-up pressure roller device 200 is used to be installed next to a take-up roller 100. It includes two sliding wall plates 20 that can move left and right relative to the take-up roller 100. The two ends of the pneumatic eccentric roller device 300 are mounted between the two sliding wall plates 20 by rocker arms 14, and the key bar 8 on them is kept facing the take-up roller 100. The rocker arms 14 are driven to rotate by pressure roller cylinders 15 fixed on the sliding wall plates 20. Specifically, the two ends of the air shaft 1 on the pneumatic eccentric roller device 300 are fixedly connected to the movable ends of the rocker arms 14.

[0045] The fixed ends of the two rocker arms 14 are both mounted on the crossbar 16 between the two sliding wall panels 20. The two ends of the air shaft 1 on the pneumatic eccentric roller device 300 are fixedly connected to the middle of the rocker arm 14. The movable end of the pressure roller cylinder 15 fixed on the sliding wall panel 20 is connected to the movable end pin of the rocker arm 14 to drive it to rotate.

[0046] Work process:

[0047] During the film winding process, the pneumatic eccentric roller device 300, driven by the translation wall plate 20 and the pressure roller cylinder 15, presses against the winding roller 100. The air bladder 7 on the air expansion shaft 1 inflates and tightens. Because the pressure of the air bladder 7 is always present, the eccentric roller unit 2 can be pressed against the winding roller 100 by the key bar 8. When some of the eccentric roller units 2 encounter a part of the winding roller 100 with a larger roll diameter, the eccentric roller unit 2 will be pressed backward, and the key bar 8 will be pushed backward after being subjected to force. Return a certain distance until a new equilibrium is reached; when some eccentric roller units 2 encounter places on the take-up roller 100 with a smaller roll diameter, the pressure of the air bladder 7 is always present, so the eccentric roller units 2 can always press on the take-up roller 100 at that point to ensure the winding pressure; moreover, because of the presence of the elongated through hole 6 on the eccentric shaft 3, while ensuring that the rubber roller 5 always presses on the take-up roller 100, the eccentric roller units 2 also have more space to adaptively retreat as the roll diameter increases, making the winding pressure more stable.

[0048] This utility model discloses a pneumatic eccentric roller device and a winding pressure roller device including the pneumatic eccentric roller device. The structure is ingenious. By inserting an air shaft through an eccentric shaft with an elongated oval through hole and setting a key bar on the air shaft to push each eccentric roller unit to move along the long side of the elongated oval hole, and by making each eccentric roller unit move independently, each eccentric roller unit is an independent entity when in contact with the surface of the winding roller. When encountering winding roller surfaces with different heights, it can independently and adaptively press and support the surface of the winding roller. Therefore, it can ensure that all surfaces on the winding roller can be compacted during the winding process, ensuring that every roll and every part of every roll on the winding roller is compacted, thereby ensuring the winding quality. The entire winding process is stable, highly practical, and worthy of promotion.

[0049] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A pneumatic eccentric roller device (300), characterized in that, Includes an air shaft (1), and several eccentric roller units (2) with the same structure are sequentially sleeved on the outside of the air shaft (1). The eccentric roller unit (2) includes an eccentric shaft (3), a bearing (4) and a rubber roller (5) from the inside to the outside. The inner ring of the bearing (4) is fixedly connected to the eccentric shaft (3), and the outer ring of the bearing (4) is fixedly connected to the rubber roller (5). The rubber roller (5) is used to contact the take-up roller (100) and can rotate relative to the eccentric shaft (3). The eccentric shaft (3) has an elongated through hole (6) in the middle. The air shaft (1) passes through the elongated through hole (6) and cannot rotate relative to the elongated through hole (6). One side of the air shaft (1) facing the elongated through hole is cut into a plane. An air bag (7) connected to an external air supply device is fixed on the plane. The outer side of the air bag (7) is provided with a number of key bars (8) equal to the number of eccentric roller units (2). Each key bar (8) corresponds to one eccentric roller unit (2) and is located inside the eccentric roller unit (2). After the air bag (7) is ventilated, the key bar (8) can push the inner wall of the elongated through hole (6) on the same side to move the eccentric roller unit (2) as a whole toward one side of the air shaft (1) to achieve the eccentric movement of the eccentric roller unit (2) relative to the air shaft (1). Both ends of the air shaft (1) and the outer side of the eccentric roller unit (2) are fixedly provided with retaining rings (9) for limiting the eccentric roller units (2) together. The retaining rings (9) are fixedly connected to the air shaft (1). The two adjacent eccentric roller units (2) and the eccentric roller unit (2) and the retaining ring (9) are slidably separated by a stop block (10). After being separated by the stop block (10), there are gaps between the rubber rollers (5) on the two adjacent eccentric roller units (2) and between the rubber rollers (5) and the retaining ring (9) so as not to interfere with each other.

2. The pneumatic eccentric roller device according to claim 1, characterized in that, On both sides of the long side of the oblong through hole (6) of the eccentric shaft (3), at least one limiting groove (11) parallel to the long side of the oblong through hole (6) is dug inward. The two adjacent eccentric roller units (2) and the eccentric roller unit (2) and the retaining ring (9) are separated by two oppositely arranged stop blocks (10) located on both sides of the long side of the oblong through hole (6). One end of the stop block (10) is fixedly connected to the limiting groove (11) on an eccentric shaft (3), and the other end can be movably and slidably inserted into the limiting groove (11) of the adjacent eccentric shaft (3) or slidably contacted with the side of the retaining ring (9).

3. The pneumatic eccentric roller device according to claim 2, characterized in that, The portion next to the end face on both sides of the long side of the oblong through hole (6) of the eccentric shaft (3) is excavated to a certain depth to form a limiting platform. One end of the stop block (10) is fixedly connected to the limiting platform on an eccentric shaft (3), and its other end can slide against the limiting platform of the adjacent eccentric shaft (3) or slide against the side of the retaining ring (9).

4. The pneumatic eccentric roller device according to claim 1, characterized in that, A fixed outer shell (12) is also fitted on the outside of the air shaft (1). The fixed outer shell (12) is slidably in contact with the inner wall of the eccentric shaft (3). The key bar (8) has a T-shaped structure, with its wider side being the bottom and fixedly connected to the air bag (7). The fixed outer shell (12) is provided with a guide slot (13) that limits the movement range of the key bar (8) by limiting the movement range of the bottom of the key bar (8). The top of the key bar (8) penetrates the guide slot (13) and points to the inner wall of the eccentric shaft (3).

5. The pneumatic eccentric roller device according to claim 1, characterized in that, The rubber roller (5) is an aluminum core rubber roller.

6. A take-up pressure roller device (200) for being disposed beside a take-up roller (100), characterized in that, The device includes two sliding wall panels (20) that can move left and right relative to the take-up roller (100). The two ends of the pneumatic eccentric roller device (300) according to any one of claims 1-5 are mounted between the two sliding wall panels (20) by rocker arms (14) and the key bar (8) on it is kept facing the take-up roller (100). The rocker arms (14) are driven to rotate by pressure roller cylinders (15) fixed on the sliding wall panels (20). Specifically, the two ends of the air shaft (1) on the pneumatic eccentric roller device (300) are fixedly connected to the movable end of the rocker arm (14).

7. The winding pressure roller device according to claim 6, characterized in that, The fixed ends of the two rocker arms (14) are both mounted on the crossbar (16) between the two sliding wall panels (20). The two ends of the air shaft (1) on the pneumatic eccentric roller device (300) are fixedly connected to the middle of the rocker arm (14). The movable end of the pressure roller cylinder (15) fixed on the sliding wall panel (20) is connected to the movable end pin of the rocker arm (14) to drive it to rotate.

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