Non-woven fabric winding mandrel

Abstract

The utility model relates to the technical field of non-woven fabric production, in particular to a non-woven fabric winding mandrel which comprises a shaft barrel, end heads are arranged on the end faces of the two ends of the shaft barrel, installation holes penetrating through the shaft barrel are formed in the side faces of the two ends of the shaft barrel in the radial direction, a rotating shaft is rotationally arranged in the installation holes, and the two ends of the rotating shaft are flush with the outer side face of the shaft barrel. A piston is slidably arranged in the shaft barrel on the side, away from the end, of the eccentric wheel, the eccentric wheel abuts against the piston, a bag is arranged in the position, between the pistons, of the shaft barrel, the bag is filled with liquid, and the two ends of the bag abut against the pistons at the two ends respectively. Hollow-out parts are evenly arranged on the peripheral side of the shaft barrel in the length direction of the shaft barrel, supporting pieces are arranged in the hollow-out parts, the inner sides of the supporting pieces are fixedly bonded with the bag body, and the paper tube can be prevented from shifting.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, specifically to a nonwoven fabric winding mandrel. Background Technology

[0002] Nonwoven fabric is a flexible material made of oriented or randomly arranged fibers bonded together by mechanical, thermal, or chemical methods. It is widely used in medical, hygiene, packaging, and agricultural fields. In the production process, nonwoven fabric is usually wound onto paper or plastic tubes using a winding device to form rolls for easy storage and transportation.

[0003] Traditional nonwoven fabric winding devices typically employ a mandrel structure, with a paper tube fitted onto the outside of the mandrel, relying on friction or simple mechanical fixation for winding. However, in actual production, during rapid winding of the nonwoven fabric, relative slippage easily occurs between the paper tube and the mandrel, leading to uneven winding, inconsistent tension, and even paper tube detachment. Furthermore, the fit between the paper tube and the mandrel requires high precision; wear on the mandrel or dimensional deviations in the paper tube will further exacerbate the slippage problem, affecting production efficiency and finished product quality. Utility Model Content

[0004] To address the aforementioned technical deficiencies, this invention provides a nonwoven fabric winding mandrel that can prevent paper tube displacement.

[0005] This utility model discloses a nonwoven fabric winding mandrel, including a shaft cylinder, end faces at both ends of the shaft cylinder, and mounting holes penetrating the shaft cylinder radially on both sides of the shaft cylinder. A rotating shaft is rotatably mounted in the mounting holes, with both ends of the rotating shaft flush with the outer side of the shaft cylinder. Both ends of the rotating shaft are provided with internal hexagon countersunk holes. An eccentric wheel is provided in the middle of the rotating shaft. A piston is slidably mounted inside the shaft cylinder on the side of the eccentric wheel away from the end face. The eccentric wheel presses against the piston. A bladder is provided inside the shaft cylinder between the pistons. The bladder is filled with liquid, and both ends of the bladder press against the pistons at both ends. Hollowed-out portions are evenly provided on the periphery of the shaft cylinder along the length of the shaft cylinder. Support members are provided in the hollowed-out portions, and the inner side of the support members is bonded and fixed to the bladder.

[0006] The principle of the above technical solution is as follows: the paper tube is fitted onto the shaft cylinder. It should be noted that the length of the paper tube is less than the length of the shaft cylinder. Then, the internal hexagonal countersunk hole on the rotating shaft is turned by an internal hexagonal wrench, so that the maximum radial point of the eccentric wheel presses against the piston. The piston further squeezes the bladder, and the bladder bulges outward to support the paper tube, thereby fixing the paper tube. When it is necessary to remove the paper tube, the rotating shaft is turned in the opposite direction.

[0007] To increase friction, a rubber layer is bonded to the outer surface of the support. The rubber layer has greater friction when it comes into contact with the paper tube, which can better prevent the paper tube from shifting.

[0008] To restrict the axial movement of the shaft, elastic rings are fitted and fixed at both ends of the shaft, and the elastic rings press against the inner wall of the shaft cylinder.

[0009] The nonwoven fabric winding mandrel obtained by this utility model has the following advantages: by turning the shaft, the eccentric wheel and piston can squeeze the bladder, thereby causing the support to support the paper tube outward. It is simple and efficient. When the paper tube needs to be removed, simply turn the shaft in the opposite direction. Attached Figure Description

[0010] Figure 1 This is a front view of Embodiment 1 of the present utility model;

[0011] Figure 2 This is a front view and cross-sectional view of Embodiment 1 of this utility model;

[0012] Figure 3 This is Embodiment 1 of the present utility model. Figure 2 A magnified view of a portion of the image. Detailed Implementation

[0013] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0014] Example 1:

[0015] like Figure 1 , 2 As shown in Figure 3, this utility model discloses a non-woven fabric winding mandrel, including a shaft cylinder 1. End heads 2 are provided on the end faces of both ends of the shaft cylinder 1. Mounting holes penetrating the shaft cylinder 1 are provided radially on the side faces of both ends of the shaft cylinder 1. A rotating shaft 9 is rotatably mounted within the mounting holes. Elastic rings 8 are sleeved and fixed at both ends of the rotating shaft 9, pressing against the inner wall of the shaft cylinder 1. Both ends of the rotating shaft 9 are flush with the outer surface of the shaft cylinder 1. Internal hexagonal countersunk holes 7 are provided at both ends of the rotating shaft 9, and a central section of the rotating shaft 9 is provided with… An eccentric wheel 10 is provided. A piston 6 is slidably disposed inside the shaft cylinder 1 on the side of the eccentric wheel 10 away from the end 2. The eccentric wheel 10 presses against the piston 6. A bladder 5 is disposed inside the shaft cylinder 1 between the pistons 6. The bladder 5 is filled with liquid. The two ends of the bladder 5 press against the pistons 6 at both ends. Hollowed-out portions are evenly disposed on the periphery of the shaft cylinder 1 along the length direction of the shaft cylinder 1. A support member 4 is disposed in the hollowed-out portion. The inner side of the support member 4 is bonded and fixed to the bladder 5. A rubber layer 3 is bonded to the outer surface of the support member 4.

[0016] The principle of the above technical solution is as follows: the paper tube is fitted onto the shaft cylinder 1. It should be noted that the length of the paper tube is less than the length of the shaft cylinder 1. Then, the internal hexagon countersunk hole 7 on the rotating shaft 9 is turned by an internal hexagon wrench, so that the maximum radial point of the eccentric wheel 10 presses against the piston 6. The piston 6 further squeezes the bladder 5. The bladder 5 bulges outward, causing the support 4 to support the paper tube outward, thereby fixing the paper tube. When it is necessary to remove the paper tube, the rotating shaft 9 is rotated in the opposite direction.

Claims

1. A nonwoven fabric winding mandrel, characterized in that, The device includes a shaft sleeve (1), with end caps (2) on both ends of the shaft sleeve (1). Mounting holes penetrating the shaft sleeve (1) are radially provided on both sides of the shaft sleeve (1). A rotating shaft (9) is rotatably mounted within the mounting holes. Both ends of the rotating shaft (9) are flush with the outer surface of the shaft sleeve (1). Hexagonal countersunk holes (7) are provided at both ends of the rotating shaft (9). An eccentric wheel (10) is provided in the middle of the rotating shaft (9). The side of the shaft furthest from the end caps (2) of the eccentric wheel (10) is... A piston (6) is slidably arranged inside the cylinder (1), and an eccentric wheel (10) presses against the piston (6). A bladder (5) is arranged inside the shaft cylinder (1) between the pistons (6). The bladder (5) is filled with liquid. The two ends of the bladder (5) press against the pistons (6) at both ends respectively. Hollowed-out parts are evenly arranged on the periphery of the shaft cylinder (1) along the length direction of the shaft cylinder (1). A support (4) is arranged in the hollowed-out part. The inner side of the support (4) is bonded and fixed to the bladder (5).

2. The nonwoven fabric winding mandrel according to claim 1, characterized in that, A rubber layer (3) is bonded to the outer surface of the support (4).

3. A nonwoven fabric winding mandrel according to claim 1 or 2, characterized in that, Elastic rings (8) are fixed at both ends of the rotating shaft (9), and the elastic rings (8) press against the inner wall of the shaft cylinder (1).

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