Paper core cutting device

Abstract

The utility model discloses a paper core cutting device which comprises a base, a driving part, an expansion shaft, a first sliding seat and a cutter assembly. The driving end of the driving part is fixedly connected with a rotating shaft. The expansion shaft is sleeved and fixedly connected to the rotating shaft, and when the paper element is sleeved on the expansion shaft, the expansion shaft can expand to enable the paper element and the rotating shaft to be relatively fixed. The first sliding seat is connected to the base in a sliding mode, and two roller assemblies arranged in the front-back direction at intervals are arranged on the first sliding seat. The cutter assembly comprises a second sliding base, a swing base and a blade, the second sliding base is slidably connected to the first sliding base in the vertical direction, one end of the swing base is rotationally connected to the second sliding base, and the blade is installed on the swing base. When the paper core is sleeved on the expansion shaft, the driving part drives the rotating shaft to rotate around the axis and drives the paper core to rotate around the rotating shaft, and the swing seat rotates relative to the second sliding seat to enable the blade to approach and cut the paper core or leave the paper core. The paper core cutting device is suitable for paper cores with various lengths and diameters, the universality is high, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a paper core cutting device. Background Technology

[0002] In the BOPP film production process, paper cores are used for winding, storing and transporting various films. In order to adapt to films of various widths, paper cores of various lengths are required. The initial length of the paper core is usually several meters long, and it needs to be cut into specified lengths to meet the needs of various films. The existing cutting method usually requires manual picking up of the cutting machine to cut the paper core directly, which is time-consuming, labor-intensive and inefficient, and the cut paper core ends are not flat. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a paper core cutting device.

[0004] This utility model embodiment provides a paper core cutting device for cutting paper cores, the paper core cutting device comprising:

[0005] Base;

[0006] A driving component, wherein a rotating shaft is fixedly connected to the driving end of the driving component, and the rotating shaft extends in the left-right direction;

[0007] An expansion shaft is sleeved and fixedly connected to the rotating shaft. When the paper core is sleeved on the expansion shaft, the expansion shaft can expand so that the paper core and the rotating shaft are relatively fixed.

[0008] The first slide block is slidably connected to the base in the left-right direction. The first slide block is provided with two roller assemblies that are spaced apart in the front-back direction. When the paper core is sleeved on the expansion shaft, the two roller assemblies support the paper core.

[0009] The cutting assembly includes a second slide, a swing seat, and a blade. The second slide is slidably connected to the first slide in the vertical direction. One end of the swing seat is rotatably connected to the second slide. The blade is mounted on the swing seat, and the axis of the blade is in the left-right direction.

[0010] When the paper core is fitted onto the expansion shaft, the driving component can drive the rotating shaft to rotate around its axis, thereby causing the paper core to rotate around its axis. The swing seat can rotate relative to the second slide seat to allow the blade to approach and cut the paper core or move away from the paper core.

[0011] The paper core cutting device according to the present invention has at least the following technical effects: when paper core needs to be cut, the paper core is simultaneously fitted onto the expansion shaft and the rotating shaft. The expansion shaft expands and presses tightly against the inner wall of the paper core, fixing the paper core on the expansion shaft. The two roller assemblies can jointly support the paper core to prevent it from bending downwards due to excessive length. The first slide moves in the vertical direction to adapt to paper cores of various lengths, and the second slide drives the cutting blade assembly to slide in the vertical direction to adapt to paper cores of various diameters. The driving component drives the rotating shaft, the expansion shaft, and the paper core to rotate. When the rotating swing seat moves the blade closer to the paper core, the blade cuts the paper core, and the cut end of the paper core is flat. This paper core cutting device is applicable to paper cores of various lengths and diameters, has high versatility, and improves work efficiency.

[0012] According to some embodiments of the present invention, the paper core cutting device further includes a blade holder sleeve, which is sleeved on the rotating shaft and coaxially arranged with the rotating shaft. The outer peripheral wall of the blade holder is provided with an annular groove, and when the blade approaches and cuts the paper core, the blade can be inserted into the annular groove.

[0013] According to some embodiments of the present invention, the paper core cutting device further includes a bushing, the bushing is sleeved on the rotating shaft, the padding cylinder is sleeved on the bushing, and a first locking component is provided at the right end of the bushing, the first locking component being able to fix the bushing and the rotating shaft relative to each other.

[0014] According to some embodiments of the present invention, the first locking assembly includes a first swing arm, a second swing arm, a slider, and a spring. One end of the first swing arm is rotatably connected to the bushing, and the slider is slidably connected to the first swing arm along the extension direction of the first swing arm. The spring is located inside the first swing arm, and both ends of the spring are respectively connected to the first swing arm and the slider. The spring is always in a compressed state. The middle part of the second swing arm is rotatably connected to the bushing, and one end of the second swing arm is rotatably connected to the slider. When the other end of the second swing arm rotates along a first direction and abuts against the rotating shaft, the spring applies a force to the slider, and the slider applies a force to the second swing arm rotating along the first direction. The other end of the second swing arm is pressed against the rotating shaft.

[0015] According to some embodiments of the present invention, the outer peripheral wall of the left end of the bushing is provided with an external thread, the paper core cutting device further includes a nut, the nut is threadedly connected to the bushing, the outer peripheral wall of the bushing is provided with a limiting ring, the limiting ring is located to the right of the nut, the pad tube is located between the nut and the limiting ring, and the nut and the limiting ring cooperate to restrict the pad tube from moving axially along the bushing.

[0016] According to some embodiments of the present invention, the roller assembly includes a fixed seat, a support wheel, and a second locking assembly. The fixed seat is slidably connected to the first slide in the front-back direction. The fixed seat is provided with an elongated through hole extending in the front-back direction. The second locking assembly passes through the elongated through hole and can press the fixed seat downward to fix the fixed seat relative to the first slide.

[0017] According to some embodiments of the present invention, the second locking assembly includes a tension bolt and a first eccentric wheel. The tension bolt passes through both the first slide and the elongated through hole. The upper end of the tension bolt is rotatably connected to the first eccentric wheel. Rotation of the first eccentric wheel can cause the first eccentric wheel to press down on the fixed seat.

[0018] According to some embodiments of the present invention, the swing seat is provided with a first limiting rod. When the swing seat drives the blade to rotate and descend close to the rotating shaft, the first limiting rod can abut against the lower end face of the second slide to restrict the blade from rotating and descending.

[0019] According to some embodiments of the present invention, the swing seat is provided with a second limiting rod. When the swing seat drives the blade to rotate and rise away from the rotating shaft, the second limiting rod can abut against the front side of the first slide to restrict the blade from rotating and rising.

[0020] According to some embodiments of the present invention, the first slide block is provided with a slide rod extending in the vertical direction, the slide rod passes through the second slide block, the second slide block is provided with a second eccentric wheel, the second eccentric wheel is rotatably connected to the second slide block, and the rotation of the second eccentric wheel can cause the second slide block to fit and press against the first slide block so that the second slide block and the first slide block are relatively fixed.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of a paper core cutting device according to some embodiments of the present invention;

[0024] Figure 2 This is a schematic diagram of the paper core cutting device according to some embodiments of the present invention from another angle;

[0025] Figure 3This is a partial structural schematic diagram of the paper core cutting device according to some embodiments of this utility model;

[0026] Figure 4 This is a partial structural schematic diagram of the paper core cutting device according to some embodiments of this utility model;

[0027] Figure 5 This is a partial structural schematic diagram of the paper core cutting device according to some embodiments of this utility model;

[0028] Figure 6 This is a partial structural schematic diagram of the paper core cutting device according to some embodiments of this utility model;

[0029] Figure 7 This is an exploded view of a portion of the structure of a paper core cutting device according to some embodiments of this utility model.

[0030] Icon labels:

[0031] Base 100, paper core 110, drive component 120, expansion shaft 130, rotating shaft 140;

[0032] First slide block 200, roller assembly 210, fixed seat 220, support wheel 230, second locking assembly 240, tension bolt 241, first eccentric wheel 242, elongated through hole 250, slide rod 260, second eccentric wheel 270, and locking block 280;

[0033] The cutting assembly 300, the second slide 310, the swing seat 320, the blade 330, the first limiting rod 341, and the second limiting rod 342;

[0034] The components include: a padding sleeve 400, an annular groove 401, a bushing 410, a first locking assembly 420, a first swing arm 421, a second swing arm 422, a slider 423, a spring 424, a nut 430, and a limiting ring 440. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0040] According to some embodiments of this utility model, refer to Figures 1 to 7 The paper core cutting device is used to cut the paper core 110. The device includes a base 100, a drive component 120, an expansion shaft 130, a first slide 200, and a cutter assembly 300. The drive component 120 is a drive motor, and a rotating shaft 140 is fixedly connected to the drive end of the drive component 120, extending in the left-right direction. The expansion shaft 130 is sleeved on and fixedly connected to the rotating shaft 140. When the paper core 110 is sleeved on the expansion shaft 130, the expansion shaft 130 expands, fixing the paper core 110 and the rotating shaft 140 relatively. The first slide 200 is slidably connected to the base 100 in the left-right direction. Two roller assemblies 210 are spaced apart in the front-back direction on the first slide 200. When the paper core 110 is sleeved on the expansion shaft 130, the two roller assemblies 210 support the paper core 110, preventing the end of the paper core 110 away from the expansion shaft 130 from bending downwards under gravity. The cutter assembly 300 includes a second slide 310, a swing seat 320, and a blade 330. The second slide 310 is slidably connected to the first slide 200 in the vertical direction. One end of the swing seat 320 is rotatably connected to the second slide 310. The blade 330 is disc-shaped, with its axis pointing left and right. The middle part of the blade 330 is rotatably connected to the swing seat 320, and the blade 330 is located above the roller assembly 210. When the paper core 110 is fitted onto the expansion shaft 130, the drive component 120 can drive the rotating shaft 140 to rotate around its axis, causing the paper core 110 to rotate around its rotating shaft 140. The swing seat 320 can rotate relative to the second slide 310, causing the blade 330 to rotate and descend to approach and cut the paper core 110, or rotate and rise to move away from the paper core 110.

[0041] Reference Figure 2When the paper core 110 needs to be cut, the paper core 110 is simultaneously fitted onto the expansion shaft 130 and the rotating shaft 140. The expansion shaft 130 expands and presses tightly against the inner wall of the paper core 110, fixing the paper core 110 on the expansion shaft 130. The two roller assemblies 210 can jointly support the paper core 110 to prevent it from bending downwards due to excessive length. The first slide 200 moves vertically to accommodate paper cores 110 of various lengths, and the second slide 310 drives the cutter assembly 300 to slide vertically to accommodate paper cores 110 of various diameters. The drive component 120 drives the rotating shaft 140, the expansion shaft 130, and the paper core 110 to rotate. The rotating swing seat 320 drives the blade 330 to rotate and descend, approaching the paper core 110. The blade 330 cuts the paper core 110, and the cut end of the paper core is flat. After cutting, the swing seat 320 is rotated again to drive the blade 330 to rotate and rise, moving away from the paper core 110.

[0042] This paper core cutting device is suitable for paper cores of various lengths and diameters 110, making it highly versatile and improving work efficiency.

[0043] According to some embodiments of this utility model, refer to Figures 3 to 7 The paper core cutting device also includes a padding sleeve 400, which is sleeved on and coaxially arranged with the rotating shaft 140. The outer peripheral wall of the padding sleeve 400 has an annular groove 401. When the blade 330 approaches and cuts the paper core 110, the blade 330 can insert into the annular groove 401, avoiding direct cutting of the padding sleeve 400 and thus saving the cost of replacing it. The padding sleeve 400 is made of nylon. When the blade 330 accidentally deviates from the annular groove 401, it can cut the padding sleeve 400 instead of the rotating shaft 140, preventing the rotating shaft 140 from being cut off or the blade 330 from being damaged. The expansion shaft 130 and the padding sleeve 400 are respectively sleeved on the rotating shaft 140, and they do not interfere with each other. Figure 1 In the middle, the expansion shaft 130 is located at the left end of the rotating shaft 140, and the padding cylinder 400 is located above the roller assembly 210, so that the padding cylinder 400 is located in the middle of the rotating shaft 140.

[0044] According to some embodiments of this utility model, refer to Figure 6 and Figure 7 The paper core cutting device also includes a bushing 410, which is sleeved on the rotating shaft 140. A padding tube 400 is sleeved on the bushing 410. A first locking component 420 is provided at the right end of the bushing 410. The first locking component 420 can fix the bushing 410 and the rotating shaft 140 relative to each other.

[0045] Preferred, refer to Figure 6 and Figure 7The first locking assembly 420 includes a first swing arm 421, a second swing arm 422, a slider 423, and a spring 424. The left end of the first swing arm 421 is rotatably connected to the bushing 410. The slider 423 is slidably connected to the first swing arm 421 along the extension direction of the first swing arm 421. The spring 424 is located inside the first swing arm 421. The left end of the spring 424 is connected to the first swing arm 421, and the right end of the spring 424 is connected to the slider 423. The spring 424 is always in a compressed state, that is, the spring 424 continuously applies force to the slider 423. The middle part of the second swing arm 422 is rotatably connected to the bushing 410, and the left end of the second swing arm 422 is rotatably connected to the right end of the slider 423.

[0046] It should be noted that, referring to Figure 6 and Figure 7 When the right end of the second swing arm 422 rotates along the first direction and abuts against the rotating shaft 140, the first direction is... Figure 6 In the clockwise direction, the spring 424 applies a force to the slider 423, and the slider 423 applies a force to the second swing arm 422 to rotate in the first direction, causing the right end of the second swing arm 422 to move towards the rotating shaft 140, so that the right end of the second swing arm 422 presses against the rotating shaft 140, thereby fixing the rotating shaft 140 and the bushing 410 relatively.

[0047] Preferred, refer to Figure 6 and Figure 7 The outer peripheral wall of the left end of the bushing 410 is provided with external threads. The paper core cutting device also includes a nut 430, which is threadedly connected to the bushing 410. The outer peripheral wall of the bushing 410 is provided with a limiting ring 440, which is located to the right of the nut 430. The pad tube 400 is located between the nut 430 and the limiting ring 440. The nut 430 and the limiting ring 440 work together to restrict the pad tube 400 from moving axially along the bushing 410, that is, to restrict the pad tube 400 from moving in the left and right directions.

[0048] Reference Figure 3 and Figure 4 The paper core cutting device also includes a locking block 280. When the paper core 110 does not need to be cut, the locking block 280 is located between the roller assembly 210 and the pad knife cylinder 400. The upper end of the locking block 280 is inserted into the annular groove 401. The locking block 280 can be used to support the pad knife cylinder 400 and the rotating shaft 140, preventing the rotating shaft 140 from bending downward under the action of gravity.

[0049] According to some embodiments of this utility model, refer to Figures 2 to 5The roller assembly 210 includes a fixed base 220, a support wheel 230, and a second locking assembly 240. The fixed base 220 is slidably connected to the first slide block 200 in the front-back direction. The fixed base 220 has an elongated through hole 250 extending in the front-back direction. The second locking assembly 240 passes through the elongated through hole 250 and can press the fixed base 220 downward to fix the fixed base 220 relative to the first slide block 200. The second locking assembly 240 can move relative to the elongated through hole 250 in the front-back direction. When the fixed base 220 moves to a designated position in the front-back direction, the second locking assembly 240 fixes the fixed base 220 onto the first slide block 200. The fixed bases 220 of the two roller assemblies 210 can move in the front-back direction to adjust the distance between the support wheels 230 of the two fixed bases 220, thereby accommodating paper cores 110 of various diameters.

[0050] Preferred, refer to Figures 2 to 5 The second locking assembly 240 includes a tension bolt 241 and a first eccentric wheel 242. The tension bolt 241 passes through both the first slide block 200 and the elongated through hole 250. The upper end of the tension bolt 241 is rotatably connected to the first eccentric wheel 242. The rotation of the first eccentric wheel 242 can cause the first eccentric wheel 242 to press down on the fixed seat 220.

[0051] According to some embodiments of this utility model, refer to Figures 2 to 4 The swing base 320 is provided with a first limiting rod 341. When the swing base 320 drives the blade 330 to rotate and descend near the rotating shaft 140, the first limiting rod 341 can abut against the lower end surface of the second slide 310 to restrict the blade 330 from rotating and descending. The swing base 320 is provided with a second limiting rod 342. When the swing base 320 drives the blade 330 to rotate and rise away from the rotating shaft 140, the second limiting rod 342 can abut against the front side of the first slide 200 to restrict the blade 330 from rotating and rising.

[0052] Understandably, when the swing base 320 is rotated to extend horizontally, the first limiting rod 341 abuts against the lower end face of the second slide 310, and the second slide 310 blocks the first limiting rod 341, preventing the swing base 320 from continuing to rotate and descend, thus avoiding excessive cutting by the blade 330 and damage to the rotating shaft 140. When the swing base 320 is rotated to extend vertically, the second limiting rod 342 abuts against the front side of the first slide 200, thereby restricting the blade 330 from continuing to rotate and preventing the blade 330 from colliding with the first slide 200.

[0053] According to some embodiments of this utility model, refer to Figure 5The first slide block 200 is provided with a slide rod 260 extending in the vertical direction. The slide rod 260 passes through the second slide block 310. The second slide block 310 is provided with a second eccentric wheel 270, which is rotatably connected to the second slide block 310. The rotation of the second eccentric wheel 270 can cause the second slide block 310 to fit and press against the first slide block 200, thus fixing the second slide block 310 relative to the first slide block 200. After the second slide block 310 slides relative to the slide rod 260 in the vertical direction to a designated position, the second eccentric wheel 270 is rotated to press against the second slide block 310, thus making the second slide block 310 fit and press against the first slide block 200.

[0054] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A paper core cutting device for cutting paper cores (110), characterized in that, include: Base (100); A driving component (120) is provided, wherein a rotating shaft (140) is fixedly connected to the driving end of the driving component (120), and the rotating shaft (140) extends in the left-right direction; An expansion shaft (130) is sleeved and fixedly connected to the rotating shaft (140). When the paper core (110) is sleeved on the expansion shaft (130), the expansion shaft (130) can expand so that the paper core (110) and the rotating shaft (140) are relatively fixed. The first slide (200) is slidably connected to the base (100) in the left-right direction. The first slide (200) is provided with two roller assemblies (210) spaced apart in the front-back direction. When the paper core (110) is sleeved on the expansion shaft (130), the two roller assemblies (210) support the paper core (110). The cutting blade assembly (300) includes a second slide (310), a swing seat (320), and a blade (330). The second slide (310) is slidably connected to the first slide (200) in the vertical direction. One end of the swing seat (320) is rotatably connected to the second slide (310). The blade (330) is mounted on the swing seat (320), and the axial direction of the blade (330) is the left-right direction. When the paper core (110) is sleeved on the expansion shaft (130), the driving component (120) can drive the rotating shaft (140) to rotate around its axis, thereby causing the paper core (110) to rotate around its rotating shaft (140). The swing seat (320) can rotate relative to the second slide (310) to make the blade (330) approach and cut the paper core (110) or move away from the paper core (110).

2. The paper core cutting device according to claim 1, characterized in that, The paper core cutting device also includes a padding cylinder (400), which is sleeved on the rotating shaft (140) and coaxially arranged with the rotating shaft (140). The outer peripheral wall of the padding cylinder (400) is provided with an annular groove (401). When the blade (330) approaches and cuts the paper core (110), the blade (330) can be inserted into the annular groove (401).

3. The paper core cutting device according to claim 2, characterized in that, The paper core cutting device further includes a bushing (410), which is sleeved on the rotating shaft (140). The padding tube (400) is sleeved on the bushing (410). The right end of the bushing (410) is provided with a first locking component (420), which can fix the bushing (410) and the rotating shaft (140) relative to each other.

4. The paper core cutting device according to claim 3, characterized in that, The first locking assembly (420) includes a first swing arm (421), a second swing arm (422), a slider (423), and a spring (424). One end of the first swing arm (421) is rotatably connected to the bushing (410). The slider (423) is slidably connected to the first swing arm (421) along the extending direction of the first swing arm (421). The spring (424) is located inside the first swing arm (421), and both ends of the spring (424) are connected to the first swing arm (421) and the slider (423), respectively. (424) is always in a compressed state. The middle part of the second swing arm (422) is rotatably connected to the bushing (410), and one end of the second swing arm (422) is rotatably connected to the slider (423). When the other end of the second swing arm (422) rotates in the first direction and abuts against the rotating shaft (140), the spring (424) applies force to the slider (423), and the slider (423) applies a force to the second swing arm (422) in the first direction. The other end of the second swing arm (422) is pressed against the rotating shaft (140).

5. The paper core cutting device according to claim 3, characterized in that, The outer peripheral wall of the left end of the bushing (410) is provided with an external thread. The paper core cutting device also includes a nut (430), which is threadedly connected to the bushing (410). The outer peripheral wall of the bushing (410) is provided with a limiting ring (440), which is located to the right of the nut (430). The padding cylinder (400) is located between the nut (430) and the limiting ring (440). The nut (430) and the limiting ring (440) cooperate to restrict the padding cylinder (400) from moving axially along the bushing (410).

6. The paper core cutting device according to claim 1, characterized in that, The roller assembly (210) includes a fixed base (220), a support wheel (230), and a second locking assembly (240). The fixed base (220) is slidably connected to the first slide (200) in the front-back direction. The fixed base (220) is provided with an elongated through hole (250) extending in the front-back direction. The second locking assembly (240) passes through the elongated through hole (250) and can press the fixed base (220) downward to fix the fixed base (220) relative to the first slide (200).

7. The paper core cutting device according to claim 6, characterized in that, The second locking assembly (240) includes a tension bolt (241) and a first eccentric wheel (242). The tension bolt (241) passes through both the first slide (200) and the elongated through hole (250). The upper end of the tension bolt (241) is rotatably connected to the first eccentric wheel (242). The rotation of the first eccentric wheel (242) can cause the first eccentric wheel (242) to press down on the fixed seat (220).

8. The paper core cutting device according to claim 1, characterized in that, The swing seat (320) is provided with a first limiting rod (341). When the swing seat (320) drives the blade (330) to rotate and descend close to the rotating shaft (140), the first limiting rod (341) can abut against the lower end face of the second slide (310) to restrict the blade (330) from rotating and descending.

9. The paper core cutting device according to claim 1, characterized in that, The swing seat (320) is provided with a second limiting rod (342). When the swing seat (320) drives the blade (330) to rotate and rise away from the rotating shaft (140), the second limiting rod (342) can abut against the front side of the first slide (200) to restrict the blade (330) from rotating and rising.

10. The paper core cutting device according to claim 1, characterized in that, The first slide (200) is provided with a slide rod (260) extending in the vertical direction. The slide rod (260) passes through the second slide (310). The second slide (310) is provided with a second eccentric wheel (270). The second eccentric wheel (270) is rotatably connected to the second slide (310). The rotation of the second eccentric wheel (270) can cause the second slide (310) to fit and press against the first slide (200), so that the second slide (310) and the first slide (200) are relatively fixed.

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