A roll back frame

Abstract

An unwinding frame includes a bearing housing for supporting a paper roll. The bearing housing has an upward-facing notch in its bearing hole. A bearing mounted on the paper roll mandrel enters and exits the bearing hole radially along the bearing hole via this notch. The frame also includes a top cone for supporting the paper roll, which is connected to a drive mechanism. The drive mechanism drives the top cone to push into and out of a plug sleeve at the end of the paper roll. The advantage of this invention is that one unwinding frame can be used for both shafted and shaftless paper rolls, saving paper processing plants the cost of purchasing two different types of unwinding frames. It also allows manufacturers to flexibly purchase different types of large paper roll raw materials, bringing convenience to production.

Description

Technical Field

[0001] This utility model relates to paper processing equipment, and more particularly to an unwinding frame for supporting large paper rolls in paper processing equipment. Background Technology

[0002] Paper processing equipment often uses large paper rolls as its paper supply source. During production, these large paper rolls are placed on an unwinding rack, and the paper unwinding from them provides the raw paper for the paper processing equipment. Depending on whether they have a core, large paper rolls are divided into two types: one with a core, where the core extends from both ends; and the other without a core, where plugs are inserted into the ends of the core tube at both centers. The two types of paper rolls are supported differently on the unwinding rack. Existing unwinding racks come in two structural types, either only suitable for core-type rolls or only for shaftless rolls. This forces paper processing plants to either purchase two different types of unwinding racks or only procure large paper rolls based on the type of unwinding rack they have already purchased, causing production difficulties. Utility Model Content

[0003] The purpose of this invention is to provide an unwinding frame that is suitable for both shafted and shaftless paper rolls.

[0004] This utility model is implemented as follows: an unwinding frame includes a driving component that circulates in contact with a paper roll and drives the paper roll to rotate by friction. In particular, it is provided with a bearing seat to support the paper roll. The bearing hole of the bearing seat has an upward-facing notch. The bearing installed on the paper roll mandrel enters and exits the bearing hole radially along the bearing hole through the notch. It is provided with a top cone to support the paper roll. The top cone is connected to the driving mechanism. The driving mechanism drives the top cone to push into and out of the plug at the end of the paper roll.

[0005] In the preferred embodiment, the driving mechanism includes a sleeve and a tube located inside the sleeve. A rotating shaft that is axially fixed but can rotate freely in the circumferential direction is provided inside the tube. The top cone is connected to the end of the rotating shaft. A power mechanism that drives the tube to slide back and forth along the sleeve is provided outside the sleeve. The tube drives the top cone to push into and out of the plug at the end of the paper roll through the rotating shaft.

[0006] In the preferred embodiment, the bearing housing and the drive mechanism are connected to the translation mechanism, and the translation mechanism drives the bearing housing and the drive mechanism to reciprocate in a direction parallel to the paper roll axis.

[0007] In the preferred embodiment, the translation mechanism includes a guide rail, a slider slidably connected to the guide rail, and a power mechanism that drives the slider to slide back and forth along the guide rail. The bearing seat and the drive mechanism are mounted on the slider.

[0008] The advantages of this utility model are: the bearing seat supports the shafted paper roll, and the top cone supports the shaftless paper roll. One unwinding frame can be used for both shafted and shaftless paper rolls, saving paper processing plants the cost of purchasing two different types of unwinding frames. It also makes it convenient for manufacturers to flexibly purchase different types of large paper roll raw materials, bringing convenience to production. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 yes Figure 1 The right view, but omitting the paper roll and the belt that drives the paper roll to rotate; Figure 3 This is a schematic diagram of the unwinding frame bearing housing supporting the paper roll. Figure 4 This is a schematic diagram of the top cone of the unwinding frame supporting the shaftless paper roll. Detailed Implementation

[0010] To facilitate understanding of this utility model, the following embodiments provide a more comprehensive description of the present utility model. The embodiments illustrate implementation methods of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the implementation methods described in the embodiments.

[0011] See Figure 1 The unwinding frame includes a drive unit 1 that circulates in contact with the paper roll and rotates the paper roll by friction. In this embodiment, the drive unit 1 is a belt driven by a motor. The belt 1 contacts the paper roll 2 and rotates the paper roll 2 in the unwinding direction by friction. The paper unwound from the paper roll 2 is used as raw paper for paper processing equipment. During the unwinding process, the diameter of the paper roll 2 gradually decreases, and the drive unit 1 gradually changes position to maintain contact with the paper roll 2. In addition to a belt, the drive unit 1 can also be, but is not limited to, a rotating wheel or a rotating roller.

[0012] See also Figure 1 , Figure 2 The unwinding frame is equipped with a bearing seat 3 for supporting the paper roll, and the bearing hole 4 of the bearing seat 3 has an upward-facing notch 5. When it is necessary to place the axial paper roll onto the unwinding frame, see [reference needed]. Figure 3 Simply pass the bearing 7 on the core 6 of the paper roll 2 via Figure 1 The notch 5 shown is inserted radially into the bearing hole 4, thus completing the operation of placing the axial paper roll 2 onto the unwinding frame (the bearing 7 is pre-installed on the paper roll mandrel 6). The axial paper roll 2 placed on the unwinding frame is... Figure 1 The belt 1 shown is driven to rotate, initiating the unwinding process. Once the paper roll has finished unwinding, simply move the bearing 7 on the paper roll mandrel 6 via... Figure 1The notch 5 shown indicates that the paper roll retracts radially from the bearing hole 4, thus completing the process of removing the paper roll mandrel 6, left after unwinding the paper roll, from the unwinding frame. It should be noted that... Figure 1 Paper roll 2 is a shafted paper roll supported by bearing housing 3, which should be in Figure 1 A paper roll mandrel is placed inside bearing hole 4, but to clearly show bearing hole 4, Figure 1 The paper roll core was omitted.

[0013] See Figure 2 The unwinding rack is equipped with a top cone 8 to support the paper roll. When it is necessary to place the shaftless paper roll onto the unwinding rack, see [reference needed]. Figure 4 The drive mechanism 15 drives the top cone 8 to push into the stopper 9 at the end of the shaftless paper roll 2 (the stopper 9 is pre-installed on the end of the core tube of the shaftless paper roll), thus completing the operation of placing the shaftless paper roll 2 onto the unwinding frame. The shaftless paper roll 2 placed on the unwinding frame is... Figure 1 The belt 1 shown is driven to rotate, starting the unwinding process. After the shaftless paper roll is unwound, the top cone 8 is driven out of the stopper sleeve 9 by the drive mechanism 15, which completes the operation of removing the core tube left after the shaftless paper roll is unwound from the unwinding frame.

[0014] For the best implementation, see also Figure 2 , Figure 4 The drive mechanism 15 includes a sleeve 10, a tube 11 located inside the sleeve 10, and a rotating shaft 12 located inside the tube 11. A top cone 8 is connected to the end of the rotating shaft 12. An axially fixed bearing 13 is connected between the rotating shaft 12 and the tube 11, so that the rotating shaft 12 is axially fixed inside the tube 11 but can rotate freely in the circumferential direction. A power mechanism 14 is provided outside the sleeve 10 to drive the tube 11 to slide back and forth along the sleeve 10. In this embodiment, the power mechanism 14 is a cylinder, which drives the tube 11 to slide back and forth along the sleeve 10. When the tube 11 slides along the sleeve 10, the tube 11 drives the top cone 8 to push into or out of the plug sleeve 9 through the rotating shaft 12. In addition to a cylinder, other conventional mechanisms such as a hydraulic cylinder or a screw and nut mechanism driven by a motor can also be used as the power mechanism 14. Taking the lead screw and nut mechanism as an example, the nut can be fixed and the motor drives the lead screw to rotate, which in turn drives the sleeve 11 to slide back and forth; or the lead screw can be fixed and the motor drives the nut to rotate, which in turn drives the sleeve 11 to slide back and forth.

[0015] To ensure that the paper exiting the paper roll aligns perfectly with the raw paper inlet of the paper processing equipment, for the best implementation method, see [reference needed]. Figure 4The bearing housing 3 and the drive mechanism 15 are connected to the translation mechanism 19. The translation mechanism 19 drives the bearing housing 3 and the drive mechanism 15 to reciprocate along a direction parallel to the paper roll axis. In this embodiment, the translation mechanism 19 includes a guide rail 17 fixed on the frame, a slider 18 slidably connected to the guide rail 17, and a power mechanism 16 that drives the slider 18 to reciprocate along the guide rail 17. In this embodiment, the power mechanism 16 is a cylinder, which drives the slider 18 to reciprocate along the guide rail 17. When the slider 18 reciprocates along the guide rail 17, it can change the position of the paper roll 2 in the axial direction, thereby adjusting the paper roll 2 to a position where the withdrawn paper material is just aligned with the raw paper input port of the paper processing equipment. In addition to a cylinder, a hydraulic cylinder or a screw and nut mechanism driven by a motor can also be used as the power mechanism 16. The power mechanism 16 that drives the slider 18 to slide and the power mechanism 14 that drives the sleeve 11 to slide can adopt the same mechanism type.

[0016] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the appended claims.

Claims

1. An unwinding frame, comprising a drive component that circulates in contact with a paper roll and drives the paper roll to rotate by friction, characterized in that: The paper roll is provided with a bearing housing, and the bearing hole of the bearing housing has an upward-facing notch. The bearing mounted on the paper roll mandrel enters and exits the bearing hole radially along the bearing hole through the notch. The paper roll is provided with a top cone, which is connected to a drive mechanism. The drive mechanism drives the top cone to push into and out of the plug at the end of the paper roll.

2. A roll-off stand as claimed in claim 1, characterized in that: The driving mechanism includes a sleeve and a tube located inside the sleeve. A rotating shaft that is axially fixed but can rotate freely in the circumferential direction is provided inside the tube. The top cone is connected to the end of the rotating shaft. A power mechanism that drives the tube to slide back and forth along the sleeve is provided outside the sleeve. The tube drives the top cone to push into and out of the plug at the end of the paper roll through the rotating shaft.

3. A roll-off stand as claimed in claim 1, characterized in that: The bearing housing and the drive mechanism are connected to the translation mechanism, which drives the bearing housing and the drive mechanism to reciprocate along a direction parallel to the paper roll axis.

4. A roll-off stand as claimed in claim 3, characterized in that: The translation mechanism includes a guide rail, a slider slidably connected to the guide rail, and a power mechanism that drives the slider to slide back and forth along the guide rail. The bearing seat and the drive mechanism are mounted on the slider.

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