Paper roll center feeding shaft

Abstract

The utility model relates to the technical field of paper roll feeding, in particular to a paper roll center feeding shaft which comprises a rotating shaft, two annular plates are detachably connected to one side of the rotating shaft in a sleeved mode, and the distance between the annular plates is consistent with the thickness of a machine frame supporting base. The two sides of the rotating shaft are further sleeved with annular clamping plates, a plurality of first ball cavities are formed in the annular clamping plates, first balls are arranged in the first ball cavities and evenly distributed along the rotating shaft, the outer sides of the annular clamping plates are sleeved with blocking plates, first screw holes are formed in the annular side faces of the blocking plates, and first extrusion bolts with the ends capable of making contact with the rotating shaft are arranged in the first screw holes. According to the paper roll unwinding device, the annular plate can be used for limiting the rotating shaft to prevent the rotating shaft from transversely moving on the base during unwinding, meanwhile, the annular clamping plate can be used for limiting the paper roll to prevent the paper roll from deviating on the rotating shaft, and therefore the paper roll can be effectively prevented from deviating downwards, and errors of subsequent printing are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper roll loading, and specifically relates to a paper roll central loading shaft. Background Art

[0002] Tissue paper needs to go through multiple steps from semi-finished products to finished products, including a step of printing on it to increase its beauty.

[0003] Among them, before printing the tissue paper, in order to facilitate its movement, it needs to be wound up for transfer and movement, and when printing, it also needs to be unwound. When unwinding, the central loading shaft needs to be inserted into the center of the paper roll, and then moved to the required position to realize the unwinding of the paper roll along the central loading shaft.

[0004] However, when the existing central loading shaft is in use, it is often a single round shaft. After passing the round shaft through the central cylinder of the paper roll, the two ends of the round shaft are placed on the rack support seats for unwinding. When the paper roll unwinds on the round shaft, it rotates and unwinds at the same time, and it is very easy for the rotating shaft to be misaligned on the base or the paper roll to shift on the round shaft, resulting in errors in subsequent printing steps. Content of the Utility Model

[0005] The utility model provides a paper roll central loading shaft to solve the defects in the prior art.

[0006] The utility model is realized through the following technical solutions:

[0007] A paper roll central loading shaft includes a rotating shaft. Two annular plates are detachably sleeved on one side of the rotating shaft, and the distance between the annular plates is the same as the thickness of the rack support seat. Annular clamping plates are also sleeved on both sides of the rotating shaft. Several first ball cavities are arranged in the annular clamping plates, and first balls are arranged in the first ball cavities. The first balls are evenly arranged along the rotating shaft. A blocking plate is sleeved on the outer side of the annular clamping plate. A first screw hole is formed in the annular side surface of the blocking plate, and a first pressing bolt with an end capable of contacting the rotating shaft is arranged in the first screw hole.

[0008] When this application is in use, an annular plate is detachably and fixedly sleeved on one side of the rotating shaft, so that the rotating shaft can be clamped between the rack support seats through the annular plate, thereby preventing the rotating shaft from moving. When the first pressing bolt presses against the rotating shaft, the blocking plate can be fixed, thereby blocking the annular clamping plate. The inner end of the annular clamping plate is inserted into the central cylinder to realize the limit of both sides of the paper roll, thereby clamping the paper roll. And under the action of the blocking plate, the paper roll is prevented from sliding and shifting along the rotating shaft. The first balls rotate on the rotating shaft, which can replace the sliding friction between the annular clamping plate and the rotating shaft with rolling friction, prevent the rotating shaft and the annular clamping plate from being worn, and at the same time ensure smoother unwinding.

[0009] Preferably, the inner diameter of the annular clamping plate is consistent, and the outer diameter gradually decreases in the opposite direction. On the opposite sides of the annular clamping plate, a blocking ring extends outward in the direction away from the axis of the rotating shaft. The gradually decreasing outer diameter of the annular clamping plate enables the opposite ends of the annular clamping plate to be inserted into paper roll cylinders with different diameters, thereby increasing the range of use of the device. The blocking ring can further block the central cylinder with a wider diameter.

[0010] Preferably, threaded holes are formed in the annular plate along its circumferential direction. A lead screw is in threaded engagement with the threaded holes. The inner end of the lead screw is fixedly connected to a first ball cavity. The lead screw is located in the threaded holes, and an internal hexagon is provided at the outer end of the lead screw. Rotating the lead screw, the rotation of the lead screw in the threaded holes can drive the end of the lead screw to move towards or away from the rotating shaft, thereby changing the position of the first ball, so that the annular plate can adapt to rotating shafts with different diameters, further increasing the scope of application. The outer end of the lead screw being an internal hexagon ensures that the lead screw can be rotated on the premise that the outer end of the lead screw does not penetrate the annular plate.

[0011] Preferably, a second ball cavity is provided on the side of the blocking plate facing the annular clamping plate. Second balls are provided in the second ball cavity, and the second balls are in contact and cooperation with the corresponding side surfaces of the annular clamping plate. The contact and cooperation between the second balls and the corresponding side surfaces of the annular clamping plate can, while satisfying the blocking of the annular clamping plate by the blocking plate, replace the sliding friction between the blocking plate and the annular plate with rolling friction, thereby reducing the friction force received by the annular clamping plate.

[0012] Preferably, the outer annular surface of the annular clamping plate is a smooth surface. The smooth outer surface of the annular clamping plate can reduce the friction force between the central cylinder of the paper roll and the annular clamping plate, thereby making the unwinding smoother.

[0013] Preferably, a second threaded hole is formed in the annular plate, and a second pressing bolt whose end is in contact with the rotating shaft is in threaded engagement with the second threaded hole. Through the second pressing bolt, not only can the annular plate be clamped to the rotating shaft, but also when the second pressing bolt does not contact the rotating shaft, it is convenient for the annular plate to be withdrawn from the rotating shaft.

[0014] The beneficial effects of the present utility model are as follows: By using this application, the rotating shaft can be limited by the annular plate to prevent the rotating shaft from moving horizontally on the base during unwinding. At the same time, the paper roll can be limited by the annular clamping plate to prevent the paper roll from shifting on the rotating shaft, thereby effectively preventing the paper roll from shifting downward and preventing errors in subsequent printing. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is Figure 1 a partial enlarged view of I of ;

[0018] Figure 3 is a distribution diagram of the first ball bearings on the rotating shaft;

[0019] Figure 4 is a schematic diagram when the paper roll is unwound.

[0020] As shown in the figure:

[0021] 1. Rotating shaft, 2. Ring plate, 3. Ring clamping plate, 4. First ball bearing cavity, 5. First ball bearing, 6. Blocking plate, 7. First extrusion bolt, 8. Blocking ring, 9. Threaded hole, 10. Lead screw, 11. Second ball bearing, 12. Second extrusion bolt, 13. Frame support seat. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] A paper roll center loading shaft, as Figures 1-4 shown. It includes a rotating shaft 1, and two ring plates 2 are detachably sleeved on one side of the rotating shaft 1. The outer circumferential surface of the ring clamping plate 3 is a smooth surface. The distance between the ring plates 2 is the same as the thickness of the frame support seat 13; Ring clamping plates 3 are also sleeved on both sides of the rotating shaft 1. The ring clamping plate 3 is provided with several first ball bearing cavities 4, and first ball bearings 5 are arranged in the first ball bearing cavities 4. The first ball bearings 5 are evenly arranged along the rotating shaft 1. A blocking plate 6 is sleeved on the outside of the ring clamping plate 3. A first threaded hole is provided on the circumferential side of the blocking plate 6, and a first extrusion bolt 7 with an end that can contact the rotating shaft 1 is arranged in the first threaded hole.

[0024] When the present application is in use, a removable and fixed sleeve of an annular plate 2 is provided on one side of the rotating shaft 1, so that the annular plate 2 can be clamped between the frame support seats 13 to prevent the rotating shaft 1 from moving. Providing only two annular plates 2 on one side can not only reduce the overall gravity, but also prevent the rotating shaft 1 from moving laterally. The first extrusion bolt 7 is squeezed with the rotating shaft 1 to fix the blocking plate 6, thereby blocking the ring 8-shaped card plate 3, and the inner end of the annular card plate 3 is inserted into the central cylinder to limit the two sides of the paper roll, thereby clamping the paper roll, and under the action of the blocking plate 6, the paper roll is prevented from sliding and deviating along the rotating shaft 1. The first ball 5 rotates on the rotating shaft 1 to replace the sliding friction between the annular card plate 3 and the rotating shaft 1 with rolling friction, thereby preventing the rotating shaft 1 and the annular card plate 3 from wearing, and at the same time ensuring smoother unwinding.

[0025] The inner diameter of the annular clamping plate 3 is consistent, and the outer diameter gradually decreases in the relative direction. The opposite back of the annular clamping plate 3 is provided with a blocking ring 8 extending outward in the direction away from the axis of the rotating shaft 1. The outer diameter of the annular clamping plate 3 gradually decreases in the relative direction so that the opposite ends of the annular clamping plate 3 can be inserted into paper roll cylinders of different diameters, thereby increasing the use range of the equipment, and the blocking ring 8 can further block the central cylinder with a wider diameter.

[0026] The annular plate 2 is provided with four thread holes 9 along its circumference, and the thread holes 9 are internally threaded with a screw rod 10, and the inner end of the screw rod 10 is fixedly connected to the first ball cavity 4, and the screw rod 10 is located in the thread holes 9 and the outer end of the screw rod 10 is provided with an inner hexagon. The screw rod 10 is rotated, and the screw rod 10 rotates in the thread holes 9 to drive the end of the screw rod 10 to move toward or away from the rotating shaft 1, thereby changing the position of the first ball 5, so that the annular plate 2 can adapt to the rotating shaft 1 of different diameters, further increasing the scope of application, and the outer end of the screw rod 10 is an inner hexagon, which ensures that the screw rod 10 can be rotated without passing through the annular plate 2.

[0027] A second ball 11 cavity is provided on one side of the blocking plate 6 facing the annular clamping plate 3, and a second ball 11 is provided in the second ball 11 cavity, and the second ball 11 contacts and cooperates with the corresponding side of the annular clamping plate 3. The second ball 11 contacts and cooperates with the corresponding side of the annular clamping plate 3, and while the blocking plate 6 blocks the annular clamping plate 3, the friction between the blocking plate 6 and the annular plate 2 is replaced by rolling friction from sliding friction, thereby reducing the friction force on the annular clamping plate 3.

[0028] The outer side of the annular clamping plate 3 is a smooth surface. The outer side of the annular clamping plate 3 is a smooth surface, which can reduce the friction between the central cylinder of the paper roll and the annular clamping plate 3, thereby making the unwinding smoother.

[0029] The annular plate 2 is provided with a second screw hole, and a second pressing bolt 12 with an end contacting the rotating shaft 1 is in threaded fit with the second screw hole. Through the second pressing bolt 12, not only can the annular plate 2 be clamped with the rotating shaft 1, but also when the second pressing bolt 12 does not contact the rotating shaft 1, it is convenient for the annular plate 2 to withdraw from the rotating shaft 1.

[0030] During the use of this application, the rotating shaft 1 can be limited by the annular plate 2 to prevent the rotating shaft 1 from moving horizontally on the base during unwinding. At the same time, the annular clamping plate 3 can be used to limit the paper roll to prevent the paper roll from shifting on the rotating shaft 1, thereby effectively preventing the paper roll from shifting downward and preventing errors in subsequent printing.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A paper roll central feeding shaft, characterized in that: It includes a rotating shaft, one side of which is detachably sleeved with two annular plates, the spacing between the annular plates being consistent with the thickness of the frame support seat; both sides of the rotating shaft are also sleeved with annular clamping plates, a plurality of first ball cavities are provided in the annular clamping plates, the first ball cavities are provided with first balls, the first balls are evenly arranged along the rotating shaft, a blocking plate is sleeved on the outer side of the annular clamping plate, a first screw hole is opened on the annular side surface of the blocking plate, a first extrusion bolt whose end can contact the rotating shaft is provided in the first screw hole.

2. The paper roll central feeding shaft according to claim 1, characterized in that: The inner diameter of the annular clamping plate is consistent and the outer diameter gradually decreases in opposite directions. A blocking ring is extended outwardly from the opposite back side of the annular clamping plate in a direction away from the axis of the rotating shaft.

3. The paper roll central feeding shaft according to claim 1, characterized in that: The annular plate is provided with a thread hole along its circumference, the inner thread of the thread hole is matched with a threaded rod, the inner end of the threaded rod is fixedly connected with a first ball cavity, the threaded rod is located in the thread hole and the outer end of the threaded rod is provided with an inner hexagon.

4. The paper roll central feeding shaft according to claim 1, characterized in that: A second ball cavity is provided on a side of the blocking plate facing the annular clamping plate, a second ball is provided in the second ball cavity, and the second ball contacts and cooperates with the corresponding side of the annular clamping plate.

5. The paper roll central feeding shaft according to claim 1, characterized in that: The annular outer side surface of the annular clamping plate is a smooth surface.

6. The paper roll central feeding shaft according to claim 1, characterized in that: A second screw hole is provided on the annular plate, and a second extrusion bolt whose end portion contacts the rotating shaft is matched with the inner thread of the second screw hole.

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