A paper tube cutting device with safety protection mechanism

Abstract

The application relates to the field of paper tube cutting devices, in particular to a paper tube cutting device with a safety protection mechanism, which comprises a main body, a protection mechanism rotatably connected to the top end of the main body, a storage mechanism connected to the inner wall of the protection mechanism, a linkage mechanism arranged in the protection mechanism, the linkage mechanism driving the protection mechanism, an insurance mechanism arranged in the main body, the insurance mechanism playing a positioning insurance role on the protection mechanism; through the arrangement of the protection mechanism, the compression roller assembly and the cutting assembly can be protected, workers are prevented from touching the compression roller assembly and the cutting assembly, the use safety of the device is improved, the protection mechanism also plays a role of gathering paper scraps and dust, waste generated during cutting is collected and recycled through a dust collection device, the sanitary environment of a workshop is improved, and the protection cover can be opened, so that the device is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of paper tube cutting devices, specifically a paper tube cutting device with a safety protection mechanism. Background Technology

[0002] A paper tube cutter is a specialized device that cuts finished paper tubes of different specifications and lengths into the required dimensions. Common paper tube cutters on the market typically place the paper tube on two initial support rollers, adjust the stops, and turn on the machine. Then, the initial power roller, carrying the drive motor, is lowered by a cylinder and presses down onto the paper tube, causing it to rotate. Immediately afterward, another cylinder lifts the entire assembly, which contains the cutting motor and a high-speed rotating saw blade. The high-speed rotating saw blade contacts the paper tube and cuts it in one revolution, completing the cutting of a single paper tube.

[0003] Most existing paper tube cutting equipment lacks protective covers for the pressure rollers and cutting sections. The pressure rollers, while driving the paper tubes, easily trap external objects, such as unkempt hair from workers. The exposed cutting components significantly increase the risk of worker injury and reduce the safety of the equipment. Furthermore, cutting paper tubes generates a large amount of paper scraps and dust, which are directly scattered into the environment, polluting the space and lowering the working standard. This also makes the workshop dirty easily, requiring subsequent cleaning and increasing workload. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a paper tube cutting device with a safety protection mechanism.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a paper tube cutting device with a safety protection mechanism, comprising a main body, a protective mechanism rotatably connected to the top of the main body, a storage mechanism connected to the inner wall of the protective mechanism, a linkage mechanism inside the protective mechanism, the linkage mechanism driving the protective mechanism, and a safety mechanism inside the main body, the safety mechanism playing a positioning and safety role for the protective mechanism.

[0006] Specifically, the top of the main body is provided with two sets of idlers, which are V-shaped. A stop is installed at the top of the main body, a pressure roller assembly is provided in the middle of the main body, and a cutting assembly is provided at the bottom of the pressure roller assembly. The idlers, stop, pressure roller assembly and cutting assembly cooperate with each other to cut the paper tube.

[0007] Specifically, the protective mechanism includes a protective cover, with a protective cover at the top of the pressure roller assembly. A connector is rotatably connected to the bottom of the protective cover, and the connector is fixedly connected to one side of the main body. A cylinder is connected between the bottom of the protective cover and the main body. A through groove is opened on each side of the protective cover, and the roller extends into the interior of the protective cover through the through groove. A first negative pressure pipe and a second negative pressure pipe are connected to one side of the protective cover. The first negative pressure pipe and the second negative pressure pipe are connected to an external vacuum cleaner. A reinforcing member is connected inside the protective cover.

[0008] Specifically, the storage mechanism includes movable tracks, with a movable track on each of the inner walls of the protective cover. A sliding plate is provided between the two movable tracks, and two rollers are rotatably connected to each side of the sliding plate. The rollers are rotatably connected to the movable tracks. An observation plate is connected to the bottom of the sliding plate. The observation plate is made of transparent material. A return spring is connected between the inner wall of the protective cover and the sliding plate. The bottom of the observation plate abuts against the top side of the main body.

[0009] Specifically, the storage mechanism also includes a movable handle, which is rotatably connected to the slide plate. The protective cover has an inverted L-shaped limiting groove, and one end of the movable handle extends to the outside of the protective cover through the limiting groove.

[0010] Specifically, the linkage mechanism includes a take-up sleeve, which is fixedly connected inside the protective cover. A fixed shaft is fixedly connected to the take-up sleeve, and a winding reel is rotatably connected to the fixed shaft. A reset torsion spring is wound on the fixed shaft, with one end of the reset torsion spring engaged with the fixed shaft and the other end of the reset torsion spring engaged with the take-up sleeve.

[0011] Specifically, the linkage mechanism further includes a first connecting line and a second connecting line. The first connecting line and the second connecting line are wound on the winding reel. The other end of the first connecting line is connected to the fixed bracket of the pressure roller assembly. A pulley is rotatably connected inside the protective cover. The other end of the second connecting line is connected to the slide plate. The second connecting line is wound on the pulley. The torque of the reset torsion spring is greater than the tension of the reset tension spring.

[0012] Specifically, the safety mechanism includes a fixed rod, which is fixedly connected to the bottom end of the protective cover. A kit is internally connected to the main body, and a sliding rod is slidably connected inside the kit. A connecting rod is rotatably connected between the sliding rod and the fixed rod. A slider is slidably connected inside the kit, and the sliding rod and slider are fixedly connected. Two limiting blocks are slidably connected inside the slider, and a first spring abuts between the two limiting blocks. The ends of the limiting blocks are chamfered, and the limiting blocks engage with the inner wall of the kit. A slot is provided inside the kit, and a second spring is connected inside the slot. A slidable escape ring is slidably connected inside the slot, and the cross-section of the escape ring is triangular. A return spring is provided inside the slot.

[0013] The beneficial effects of this invention are:

[0014] (1) The paper tube cutting device with a safety protection mechanism described in this invention can protect the pressure roller assembly and the cutting assembly by setting the protection mechanism, so as to avoid workers from touching them and improve the safety of the device. At the same time, it can gather paper scraps and dust, collect and recycle the waste generated during cutting through the dust collection equipment, improve the hygiene environment of the workshop, and the setting of the protective cover can be opened to facilitate the maintenance of the equipment.

[0015] (2) The paper tube cutting device with a safety protection mechanism described in this invention allows workers to easily observe the cutting situation through a transparent observation board by setting up a storage mechanism. The observation board can be lifted up by operating the movable handle and temporarily opened for maintenance. Through the setting of the linkage mechanism, the observation board is simultaneously stored inside the protective cover when it is opened, expanding the opening size of the protective cover and facilitating unobstructed observation of the pressure roller assembly and the cutting assembly for comprehensive maintenance, making observation more convenient.

[0016] (3) The paper tube cutting device with a safety protection mechanism described in this invention has the following safety features: when the protective cover is opened, the cylinder may not be able to support the protective cover when the equipment is shut off from gas or power, which may cause the protective cover to re-lock onto the main body. The safety mechanism is designed to provide a positioning safety and limit protection for the protective cover, thereby preventing accidental closure and injury to maintenance personnel, and providing an opening safety function. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a paper tube cutting device with a safety protection mechanism provided by the present invention;

[0019] Figure 2 for Figure 1The diagram shows the connection structure of the protective mechanism, linkage mechanism, and safety mechanism.

[0020] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0021] Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown below;

[0022] Figure 5 for Figure 2 The enlarged schematic diagram of section C is shown below;

[0023] Figure 6 for Figure 2 The diagram shows the structure of the unfolded protective shield.

[0024] In the diagram: 1. Main body; 2. Idler roller; 3. Stop block; 4. Pressure roller assembly; 5. Cutting assembly; 6. Protective mechanism; 61. Protective cover; 62. Connector; 63. Reinforcing member; 64. Through groove; 65. First negative pressure pipe; 66. Second negative pressure pipe; 67. Cylinder; 7. Storage mechanism; 71. Movable track; 72. Slide plate; 73. Roller; 74. Observation plate; 75. Reset spring; 76. Limiting groove; 77. Movable handle 8. Hand; 9. Linkage mechanism; 10. Take-up sleeve; 11. Winding reel; 12. Fixed shaft; 13. Return torsion spring; 14. First connecting line; 15. Second connecting line; 16. Pulley; 17. Safety mechanism; 18. Fixed rod; 19. Connecting rod; 10. Kit; 11. Slide rod; 12. Slider; 13. Limit block; 14. First spring; 15. Slot; 16. Second spring; 17. Escape ring; 18. Return spring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1-6 As shown, the paper tube cutting device with a safety protection mechanism of the present invention includes a main body 1, a protective mechanism 6 rotatably connected to the top of the main body 1, a storage mechanism 7 connected to the inner wall of the protective mechanism 6, a linkage mechanism 8 inside the protective mechanism 6, the linkage mechanism 8 driving the protective mechanism 6, and a safety mechanism 9 inside the main body 1, the safety mechanism 9 serving as a positioning safety mechanism for the protective mechanism 6.

[0027] Specifically, the top of the main body 1 is provided with two sets of idler rollers 2, which are V-shaped. A stop block 3 is installed at the top of the main body 1. A pressure roller assembly 4 is provided in the middle of the main body 1. A cutting assembly 5 is provided at the bottom of the pressure roller assembly 4. The idler rollers 2, the stop block 3, the pressure roller assembly 4 and the cutting assembly 5 cooperate with each other to cut the paper tube. When cutting, the position of the stop block 3 is first adjusted, the raw material is placed between the two idler rollers 2, and one end of the raw material is pushed to contact the stop block 3. Then the pressure roller assembly 4 is activated to contact and drive the raw material to rotate. Finally, the cutting assembly 5 is activated to approach and cut, thereby obtaining a paper tube of a fixed length.

[0028] Specifically, the protective mechanism 6 includes a protective cover 61. The top of the pressure roller assembly 4 is provided with the protective cover 61. A connector 62 is rotatably connected to the bottom of the protective cover 61. The connector 62 is fixedly connected to one side of the main body 1. A cylinder 67 is connected between the bottom of the protective cover 61 and the main body 1. A through groove 64 is opened on each side of the protective cover 61. The idler roller 2 extends into the interior of the protective cover 61 through the through groove 64. A first negative pressure pipe 65 and a second negative pressure pipe 66 are connected to one side of the protective cover 61. The first negative pressure pipe 65 and the second negative pressure pipe 66 are connected to each other and are connected to an external dust collection device. The protective cover 61... The internal connection has a reinforcing member 63; firstly, one end of the first negative pressure pipe 65 is connected to a dedicated external vacuum cleaner. The first negative pressure pipe 65 and the second negative pressure pipe 66 generate negative pressure, thereby absorbing the waste generated during cutting and improving the hygiene inside the protective cover 61. It eliminates the need for frequent manual cleaning. The protective cover 61 protects the dangerous pressure roller assembly 4 and the cutting assembly 5, preventing accidental injury to external personnel. It also collects waste, ensuring that it is all collected and recycled by the negative pressure pipe. When the equipment needs maintenance, the cylinder 67 can be driven to deflect and open the protective cover 61 for detailed observation and maintenance by the maintenance personnel.

[0029] Specifically, the storage mechanism 7 includes a movable track 71. Each of the inner walls on both sides of the protective cover 61 is provided with a movable track 71. A sliding plate 72 is provided between the two movable tracks 71. Two rollers 73 are rotatably connected to both sides of the sliding plate 72. The rollers 73 are rotatably connected to the movable track 71. An observation plate 74 is connected to the bottom end of the sliding plate 72. The observation plate 74 is made of transparent material. A return spring 75 is connected between the inner wall of the protective cover 61 and the sliding plate 72. The bottom end of the observation plate 74 abuts against the top side of the main body 1.

[0030] Specifically, the storage mechanism 7 also includes a movable handle 77, which is rotatably connected to the slide plate 72. The protective cover 61 has an inverted L-shaped limiting groove 76, and one end of the movable handle 77 extends to the outside of the protective cover 61 through the limiting groove 76. The observation plate 74 is made of transparent material and can be used to observe the cutting process under normal circumstances. The observation plate 74 also enhances the protection of the protective cover 61. When it is necessary to open the observation plate 74 without opening the protective cover 61, simply operate the movable handle 77 to lift the slide plate 72, so that the observation plate 74 slides into the interior of the protective cover 61 along the movable track 71. By deflecting the movable handle 77 and engaging it at the top of the limiting groove 76, the observation plate 74 can be prevented from resetting.

[0031] Specifically, the linkage mechanism 8 includes a take-up sleeve 81, which is fixedly connected inside the protective cover 61. A fixed shaft 83 is fixedly connected to the take-up sleeve 81, and a winding disc 82 is rotatably connected to the fixed shaft 83. A reset torsion spring 84 is wound on the fixed shaft 83. One end of the reset torsion spring 84 is engaged with the fixed shaft 83, and the other end of the reset torsion spring 84 is engaged with the take-up sleeve 81.

[0032] Specifically, the linkage mechanism 8 further includes a first connecting line 85 and a second connecting line 86. The first connecting line 85 and the second connecting line 86 are wound on the winding reel 82. The other end of the first connecting line 85 is connected to the fixed bracket of the pressure roller assembly 4. A pulley 87 is rotatably connected inside the protective cover 61. The other end of the second connecting line 86 is connected to the slide plate 72. The second connecting line 86 is wound on the pulley 87. The torque of the return torsion spring 84 is greater than the tension of the return tension spring 75. When the protective cover 61 is opened, the fixed bracket on the pressure roller assembly 4 and the take-up sleeve 8... 1. When the device approaches, the reset torsion spring 84 resets and drives the winding reel 82 to rotate. While winding the first connecting wire 85, the winding reel 82 simultaneously winds and stores the second connecting wire 86. One end of the second connecting wire 86 pulls the sliding plate 72 through the pulley 87, thereby concealing the observation plate 74 inside the protective cover 61, achieving an automatic folding and storage function, increasing the opening of the protective cover 61 when it is opened, and facilitating maintenance by maintenance personnel. The torque of the reset torsion spring 84 is greater than the tension of the reset tension spring 75, so when the reset torsion spring 84 resets, it can drive the reset tension spring 75 to move.

[0033] Specifically, the safety mechanism 9 includes a fixed rod 91, which is fixedly connected to the bottom end of the protective cover 61. A kit 93 is connected inside the main body 1. A sliding rod 94 is slidably connected inside the kit 93. A connecting rod 92 is rotatably connected between the sliding rod 94 and the fixed rod 91. A slider 95 is slidably connected inside the kit 93. The sliding rod 94 and the slider 95 are fixedly connected. Two limiting blocks 96 are slidably connected inside the slider 95. A first spring 97 abuts between the two limiting blocks 96. The ends of the limiting blocks 96 are chamfered, and the limiting blocks 96 engage inside the kit 93. The sleeve 93 has an internal slot 98, a second spring 99 connected inside the slot 98, and a slidable escape ring 991 inside the slot 98. The escape ring 991 has a triangular cross-section, and a return spring 992 is provided inside the slot 98. The cylinder 67 is generally protected by a three-position five-way valve to prevent movement in the event of power or air shortage, but this is not very effective. If the cylinder 67 is under too much load, it is difficult to ensure it remains stationary. Therefore, the sleeve 93 was designed to prevent the cylinder 67 from resetting in case of an emergency when the cylinder 67 drives the protective cover 61 to open. The protective cover 61 closes without cause. During movement, the protective cover 61 drives the sliding rod 94 via the connecting rod 92, which in turn moves the slider 95. The slider 95 moves into the slot 98, and the limiting block 96, under the reset of the first spring 97, pops out and engages with the inner wall of the slot 98, thus limiting the movement of the protective cover 61 and preventing it from closing without cause. When it is necessary to release the limiting effect, simply drive the cylinder 67 to move slightly to further open the protective cover 61. At this time, the slider 95 abuts against the second spring 99, and the limiting block 96 moves past the release mechanism. After the entrapment ring 991 is engaged, the cylinder 67 drives the protective cover 61 to close, and the slider 95 begins to slide away from the slot 98. The limiting block 96 drags the entrapment ring 991 to press the position of the return spring 992. The limiting block 96 slides into the interior of the slider 95 through the inclined side wall of the entrapment ring 991, thereby releasing the limiting function. The protective cover 61 can then be freely closed and locked onto the main body 1 to continue providing safety protection. Afterward, the return spring 992 pushes the entrapment ring 991 to a position close to the second spring 99, preparing for the slider 95 to escape from entrapment next time.

[0034] In use, during cutting, the position of the stop block 3 is first adjusted, the raw material is placed between the two rollers 2, and one end of the raw material is pushed to contact the stop block 3. Then, the pressure roller assembly 4 is activated, contacting and rotating the raw material. Finally, the cutting assembly 5 is activated to cut the material, thus obtaining a paper tube of a fixed length. First, one end of the first negative pressure pipe 65 is connected to a dedicated external vacuum cleaner. Negative pressure is generated inside the first negative pressure pipe 65 and the second negative pressure pipe 66, which absorbs the waste generated during cutting, improving the hygiene inside the protective cover 61. Frequent manual cleaning is unnecessary. The protective cover 61 protects the dangerous pressure roller assembly 4 and cutting assembly 5, preventing accidental injury to personnel. It also collects waste material, ensuring it is all collected and recycled by the negative pressure pipes. When equipment maintenance is required, the cylinder 67 can be driven to deflect and open the protective cover 61 for detailed observation and maintenance by maintenance personnel. The observation plate 74 is made of transparent material and can be used to observe the cutting process. 4 also enhances the protective function of the protective cover 61. When it is necessary to open the observation plate 74 without opening the protective cover 61, simply operate the movable handle 77 to lift the slide plate 72, causing the observation plate 74 to slide into the interior of the protective cover 61 along the movable track 71. Deflecting the movable handle 77 and engaging it at the top position of the limit groove 76 will prevent the observation plate 74 from resetting. When the protective cover 61 is opened, the fixed bracket on the pressure roller assembly 4 gets closer to the take-up sleeve 81. The reset torsion spring 84 resets and drives the winding reel 82 to rotate. While winding the first connecting wire 85, the winding reel 82 winds and stores the second connecting wire 86. One end of the second connecting wire 86 pulls the slide plate 72 through the pulley 87, thereby hiding the observation plate 74 inside the protective cover 61, which plays the role of automatic folding and storage, increasing the opening of the protective cover 61 when it is opened, making it convenient for maintenance personnel to maintain. The torque of the reset torsion spring 84 is greater than the tension of the reset tension spring 75, so the reset torsion spring 84 can drive the reset tension spring 75 to move when it resets.Cylinder 67 is generally protected by a three-position five-way valve with a center seal to prevent it from moving in the event of power or air shortage. However, this is not very effective. If the load on cylinder 67 is too heavy, it is difficult to ensure that it does not move. Therefore, a component 93 was designed. When cylinder 67 drives the protective cover 61 to open, to prevent cylinder 67 from resetting in an emergency and causing the protective cover 61 to close unnecessarily, the protective cover 61 moves by driving the sliding rod 94 via the connecting rod 92. The sliding rod 94 then drives the slider 95 to move. The slider 95 moves into the slot 98, and the limiting block 96 pops out under the reset of the first spring 97 and engages with the inner wall of the slot 98, thus limiting the movement of the protective cover 61 and preventing it from closing unnecessarily. When it needs to be released... When the limit is lifted, simply move the cylinder 67 slightly to continue opening the protective cover 61. At this time, the slider 95 contacts the second spring 99, and the limit block 96 passes over the escape ring 991. Then, the cylinder 67 drives the protective cover 61 to close, and the slider 95 begins to slide away from the slot 98. The limit block 96 drags the escape ring 991 to press the position of the return spring 992. The limit block 96 slides into the interior of the slider 95 through the inclined side wall of the escape ring 991, thereby releasing the limit. The protective cover 61 can then freely close and lock onto the main body 1 for continued safety protection. Afterward, the return spring 992 pushes the escape ring 991 to a position close to the second spring 99, preparing for the next easy escape of the slider 95.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper tube cutting device with a safety protection mechanism, characterized in that, Includes a main body (1), a protective mechanism (6) is rotatably connected to the top of the main body (1), a storage mechanism (7) is connected to the inner wall of the protective mechanism (6), a linkage mechanism (8) is provided inside the protective mechanism (6), the linkage mechanism (8) drives the protective mechanism (6), and a safety mechanism (9) is provided inside the main body (1), the safety mechanism (9) plays a role in positioning and safety of the protective mechanism (6); The top of the main body (1) is provided with two sets of rollers (2), which are V-shaped. A stop (3) is installed at the top of the main body (1). A pressure roller assembly (4) is provided in the middle of the main body (1). A cutting assembly (5) is provided at the bottom of the pressure roller assembly (4). The rollers (2), stop (3), pressure roller assembly (4) and cutting assembly (5) cooperate with each other to cut the paper tube. The protective mechanism (6) includes a protective cover (61). The top of the pressure roller assembly (4) is provided with a protective cover (61). The bottom of the protective cover (61) is rotatably connected to a connector (62). The connector (62) is fixedly connected to one side of the main body (1). A cylinder (67) is connected between the bottom of the protective cover (61) and the main body (1). A through groove (64) is opened on both sides of the protective cover (61). The roller (2) extends into the interior of the protective cover (61) through the through groove (64). A first negative pressure pipe (65) and a second negative pressure pipe (66) are connected to one side of the protective cover (61). The first negative pressure pipe (65) and the second negative pressure pipe (66) are connected to each other. The first negative pressure pipe (65) and the second negative pressure pipe (66) are connected to an external vacuum cleaner. A reinforcing member (63) is connected inside the protective cover (61). The storage mechanism (7) includes a movable track (71). The inner walls of both sides of the protective cover (61) are provided with a movable track (71). A sliding plate (72) is provided between the two movable tracks (71). Two rollers (73) are rotatably connected to both sides of the sliding plate (72). The rollers (73) are rotatably connected to the movable track (71). An observation plate (74) is connected to the bottom of the sliding plate (72). The observation plate (74) is made of transparent material. A reset spring (75) is connected between the inner wall of the protective cover (61) and the sliding plate (72). The bottom of the observation plate (74) abuts against the top side of the main body (1).

2. The paper tube cutting device with a safety protection mechanism according to claim 1, characterized in that, The storage mechanism (7) also includes a movable handle (77), which is rotatably connected to the slide plate (72). The protective cover (61) has an inverted L-shaped limiting groove (76), and one end of the movable handle (77) extends to the outside of the protective cover (61) through the limiting groove (76).

3. A paper tube cutting device with a safety protection mechanism according to claim 1, characterized in that, The linkage mechanism (8) includes a take-up sleeve (81), which is fixedly connected inside the protective cover (61). A fixed shaft (83) is fixedly connected to the take-up sleeve (81), and a winding disc (82) is rotatably connected to the fixed shaft (83). A reset torsion spring (84) is wound on the fixed shaft (83). One end of the reset torsion spring (84) is engaged with the fixed shaft (83), and the other end of the reset torsion spring (84) is engaged with the take-up sleeve (81).

4. A paper tube cutting device with a safety protection mechanism according to claim 3, characterized in that, The linkage mechanism (8) further includes a first connecting line (85) and a second connecting line (86). The first connecting line (85) and the second connecting line (86) are wound on the winding reel (82). The other end of the first connecting line (85) is connected to the fixed bracket of the pressure roller assembly (4). The inside of the protective cover (61) is rotatably connected to a pulley (87). The other end of the second connecting line (86) is connected to the slide plate (72). The second connecting line (86) is wound on the pulley (87). The torque of the reset torsion spring (84) is greater than the tension of the reset tension spring (75).

5. A paper tube cutting device with a safety protection mechanism according to claim 1, characterized in that, The insurance mechanism (9) includes a fixed rod (91), the bottom end of the protective cover (61) is fixedly connected to the fixed rod (91), the main body (1) is internally connected to a kit (93), the kit (93) is internally slidably connected to a slide rod (94), the slide rod (94) and the fixed rod (91) are rotatably connected to a connecting rod (92), the kit (93) is internally slidably connected to a slider (95), the slide rod (94) and the slider (95) are fixedly connected, and the slider (95) has two internally slidably connected... A limiting block (96) is provided, and a first spring (97) abuts between the two limiting blocks (96). The ends of the limiting blocks (96) are chamfered. The limiting blocks (96) are engaged with the inner wall of the kit (93). A slot (98) is provided inside the kit (93). A second spring (99) is connected inside the slot (98). A slidable escape ring (991) is slidably connected inside the slot (98). The cross-section of the escape ring (991) is triangular. A reset spring (992) is provided inside the slot (98).

Images