For automatic paper cutting equipment

Abstract

This invention provides an automatic paper cutting device, comprising: a loading frame, on which a first roller, a second roller, and a third roller are mounted; the loading frame also includes a secondary lifting rod for assembling the third roller and a T-shaped rod for assembling the first and second rollers; and a cutting mechanism disposed between a winding mechanism and a paper winding mechanism. When the cutting mechanism cuts the paper between the winding and paper winding mechanisms, the first and second rollers respectively abut against the winding mechanism and the cutting mechanism on the side closer to the winding mechanism, while the third roller abuts against the cutting mechanism on the side closer to the paper winding mechanism. The second and third rollers provided by this invention abut against the paper, allowing the cutting mechanism to cut smoothly and reducing uneven cuts caused by winding tension during the cutting process.

Description

Technical Field

[0001] This utility model belongs to the field of paper cutting technology for rewinding machines, and particularly relates to an automatic paper cutting device. Background Technology

[0002] Rewinding machines are generally used for rewinding and slitting mica tape, paper, and film, effectively splitting them in two. They are commonly used to slit wide rolls of material and play an important role in subsequent re-slitting. They are specialized equipment for paper, mica tape, and film.

[0003] In the production of toilet paper rolls, a rewinding machine is used to rewind wide rolls into smaller diameter rolls. This rewinding machine typically has two winding mechanisms. After the first winding mechanism rewinds the paper into a smaller diameter roll, it is transferred to the second winding mechanism. Once the smaller diameter roll reaches the second winding mechanism, it is cut using a cutting device between the first and second winding mechanisms. Currently, the cutting device lacks a fixing component, resulting in uneven cuts due to the pulling force on both sides, which affects product quality. Utility Model Content

[0004] This utility model provides an automatic paper cutting device. The device, applied to the winding mechanism and paper winding mechanism of a rewinder, includes:

[0005] The loading frame is provided with a first rotating roller, a second rotating roller and a third rotating roller. The loading frame is also provided with a secondary lifting rod for assembling the third rotating roller and a T-shaped rod for assembling the first rotating roller and the second rotating roller.

[0006] The cutting mechanism is located between the winding mechanism and the paper winding mechanism. When the cutting mechanism cuts the paper between the winding mechanism and the paper winding mechanism, the first roller and the second roller respectively abut against the winding mechanism and the cutting mechanism on the side near the winding mechanism, and the third roller abuts against the cutting mechanism on the side near the paper winding mechanism.

[0007] Preferably, the loading frame further includes two sets of main boards and a transverse connecting rod between the two sets of main boards, and the T-shaped rod and the secondary lifting rod are connected to the ring side of the main board.

[0008] Preferably, the main board is provided with a primary lifting rod for raising and lowering the loading rack. Under the action of the primary lifting rod, the loading rack moves away from or closer to the cutting mechanism.

[0009] Preferably, the third roller is assembled at the end of the secondary lifting rod. After the cutting mechanism is completed, under the action of the secondary lifting rod, the third roller moves away from the cutting mechanism and closer to the paper winding mechanism.

[0010] Preferably, the T-shaped rod includes a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the ring side of the main board, and the other end of the first connecting rod is connected to the middle section of the second connecting rod.

[0011] Preferably, the first roller and the second roller are respectively mounted on both ends of the second connecting rod via bearings.

[0012] Compared with the prior art, the embodiments of this application have the following main advantages:

[0013] The paper automatic cutting device provided by this utility model uses a second roller and a third roller to support the paper on both sides of the cutting mechanism. During the cutting process, the second roller and the third roller support the paper so that the cutting mechanism can cut smoothly and reduce the occurrence of uneven cuts due to the influence of winding tension. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an automatic paper cutting device provided by this utility model.

[0015] Figure 2 This utility model provides a structural schematic diagram of an automatic paper cutting device, a winding mechanism, and a paper rolling mechanism.

[0016] Figure 3 This is an exploded structural diagram of an automatic paper cutting device provided by this utility model.

[0017] Figure 4 This is a schematic diagram of the side structure of an automatic paper cutting device provided by this utility model.

[0018] Figure 5 This is a schematic diagram of a loading rack structure for an automatic paper cutting device provided by this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 100. Loading frame; 110. Main board; 121. First connecting rod; 122. Second connecting rod; 130. First-stage lifting rod; 140. Second-stage lifting rod; 150. Transverse connecting rod; 210. First rotating roller; 220. Second rotating roller; 230. Third rotating roller; 300. Cutting mechanism; 410. Winding mechanism; 420. Paper winding mechanism; 500. Paper roll. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] This utility model embodiment provides an automatic paper cutting device, applied to the winding mechanism 410 and the paper winding mechanism 420 of a rewinder, such as... Figures 1-5 As shown, the automatic paper cutting device includes:

[0024] The loading frame 100 is provided with a first rotating roller 210, a second rotating roller 220 and a third rotating roller 230. The loading frame 100 is also provided with a secondary lifting rod 140 for assembling the third rotating roller 230 and a T-shaped rod for assembling the first rotating roller 210 and the second rotating roller 220.

[0025] A cutting mechanism 300 is disposed between a winding mechanism 410 and a paper winding mechanism 420. When the cutting mechanism 300 cuts the paper between the winding mechanism 410 and the paper winding mechanism 420, the first roller 210 and the second roller 220 respectively abut against the winding mechanism 410 and the cutting mechanism 300 on the side near the winding mechanism 410. The third roller 230 is disposed on the side of the cutting mechanism 300 near the paper winding mechanism 420.

[0026] In this embodiment, the loading frame 100 further includes two sets of main boards 110 and a transverse connecting rod 150 connecting the two sets of main boards 110. Each main board 110 is provided with a primary lifting rod 130 for raising and lowering the loading frame 100. Under the action of the primary lifting rod 130, the primary lifting rod 130 is fixed to the rewinder. The loading frame 100 is suspended above the cutting mechanism 300 via the primary lifting rod 130. The loading frame 100 is located away from or near the cutting mechanism 300. The third roller 230 is assembled at the end of the secondary lifting rod 140. After the cutting mechanism 300 completes cutting, under the action of the secondary lifting rod 140, the third roller 230 moves away from the cutting mechanism 300 and closer to the paper winding mechanism 420.

[0027] The first-stage lifting rod 130 serves as the main pushing structure for the first roller 210, the second roller 220, and the third roller 230. When the paper winding mechanism 420 rewinds the paper into a paper roll 500, the first-stage lifting rod 130 raises the first roller 210, the second roller 220, and the third roller 230 to avoid affecting the rewinding of the paper winding mechanism 420. After the paper roll 500 is transferred to the winding mechanism 410, the first-stage lifting rod 130 lowers its height in a timely manner. After lowering its height, the first roller 210, the second roller 220, and the third roller 230 respectively abut against the winding mechanism 410, the side of the cutting mechanism 300 near the winding mechanism 410, and the side of the cutting mechanism 300 near the paper winding mechanism 420.

[0028] In this embodiment, the cutting mechanism 300, the winding mechanism 410, and the paper winding mechanism 420 are all existing mature structures. The function of the first rotating roller 210 is to wind up the tail section formed after the paper roll 500 is cut by the winding mechanism 410. During the winding process, the first rotating roller 210 acts on the paper roll 500 on the winding mechanism 410. In the prior art, a pressure roller structure is also used to fix it on the rewinder. The pressure roller can only play an auxiliary pressing role during the winding process of the tail section formed after the paper roll 500 is cut by the winding mechanism 410. Here, the function of the first rotating roller 210 is similar to that of the existing pressure roller. The existing pressure roller uses a telescopic mechanism to realize the pressing state conversion. In this application, the first-stage lifting rod 130 and the second-stage lifting rod 140

[0029] The second roller 220 and the third roller 230 are respectively held against both sides of the cutting mechanism 300. During the cutting process of the cutting mechanism 300, the second roller 220 and the third roller 230 hold the paper to allow the cutting mechanism 300 to cut smoothly and reduce the occurrence of uneven cuts due to the influence of the winding tension during the cutting process.

[0030] In a preferred embodiment of this invention, the T-shaped rod and the secondary lifting rod 140 are connected to the ring side of the main board 110; the T-shaped rod includes a first connecting rod 121 and a second connecting rod 122, one end of the first connecting rod 121 is connected to the ring side of the main board 110, and the other end of the first connecting rod 121 is connected to the middle section of the second connecting rod 122, and the first rotating roller 210 and the second rotating roller 220 are respectively mounted on both ends of the second connecting rod 122 through bearings.

[0031] In this embodiment, the first roller 210, the second roller 220, and the third roller 230 are assembled with the loading frame 100 using the existing roller structure. The first-stage lifting rod 130 presses down against the paper after the paper roll 500 completes its transfer from the winding mechanism 420 to the rewinding mechanism 410. After the cutting mechanism 300 completes the cutting, the first-stage lifting rod 130 and the second-stage lifting rod 140 retract simultaneously. The first-stage lifting rod 130 retracts only slightly to reduce the squeezing force of the first roller 210 and the second roller 220 on the paper, preventing the rewinding mechanism 410 from failing to rewind the paper roll 500. The second-stage lifting rod 140 retracts significantly to prevent the third roller 230 from interfering with the process of the paper returning to the winding mechanism 420 after cutting. The paper on the other side after cutting can be returned to the winding mechanism 420 using existing air-blowing technology.

[0032] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A paper automatic cutting device for use in a winding mechanism (410) and a roll paper mechanism (420) of a rewinder, characterized by, include: A loading frame (100) is provided with a first rotating roller (210), a second rotating roller (220) and a third rotating roller (230). The loading frame (100) is also provided with a secondary lifting rod (140) for assembling the third rotating roller (230) and a T-shaped rod for assembling the first rotating roller (210) and the second rotating roller (220). A cutting mechanism (300) is provided between a winding mechanism (410) and a paper winding mechanism (420). When the cutting mechanism (300) cuts the paper between the winding mechanism (410) and the paper winding mechanism (420), the first roller (210) and the second roller (220) respectively abut against the winding mechanism (410) and the cutting mechanism (300) on the side near the winding mechanism (410), and the third roller (230) abuts against the cutting mechanism (300) on the side near the paper winding mechanism (420).

2. A paper automatic cutting apparatus according to claim 1, wherein The loading frame (100) also includes two sets of main boards (110) and a transverse connecting rod (150) connecting the two sets of main boards (110). The T-shaped rod and the secondary lifting rod (140) are connected to the circumferential side of the main board (110).

3. An apparatus for automatic cutting of paper as claimed in claim 2 wherein, The main board (110) is provided with a first-stage lifting rod (130) for lifting the loading rack (100). Under the action of the first-stage lifting rod (130), the loading rack (100) moves away from or closer to the cutting mechanism (300).

4. A paper automatic cutting apparatus according to claim 3, wherein The third roller (230) is assembled at the end of the secondary lifting rod (140). After the cutting mechanism (300) is completed, under the action of the secondary lifting rod (140), the third roller (230) moves away from the cutting mechanism (300) and closer to the paper winding mechanism (420).

5. A device for automatic cutting of paper sheets as claimed in claim 4, characterized in that, The T-shaped rod includes a first connecting rod (121) and a second connecting rod (122). One end of the first connecting rod (121) is connected to the ring side of the main board (110), and the other end of the first connecting rod (121) is connected to the middle section of the second connecting rod (122).

6. A device for automatic cutting of paper sheets as claimed in claim 5, characterized in that, The first roller (210) and the second roller (220) are respectively mounted on both ends of the second connecting rod (122) via bearings.

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