A safety protection device for a paper unloading platform of a rewinding machine

Abstract

The invention discloses a safety protection device for a paper unloading platform of a rewinding machine, and relates to the technical field of safety protection, comprising a paper unloading bucket rotatably arranged on the rewinding machine and a frame arranged outside the rewinding machine, wherein a movable material blocking structure is arranged at a material discharge position of the paper unloading bucket, a supporting structure and a buffer protection structure are arranged on the frame, and a limiting device is arranged on the buffer protection structure. The invention unloads paper rolls by rotating the paper unloading bucket, and in the process of rotating the paper unloading bucket, the paper rolls that may roll down are blocked by the buffer protection structure, and the paper rolls are buffered after rolling down, so as to avoid the problem that the roller directly collides with the movable material blocking structure and causes damage to the movable material blocking structure, and the buffer protection structure is supported by the movable material blocking structure to avoid the paper roll directly falling from the paper unloading bucket, and when the paper roll is stopped by buffering, the limiting device can limit the position of the buffer protection structure, so as to avoid the problem that the paper roll repeatedly rolls and generates multiple impacts.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection, and in particular to a safety protection device for a paper unloading platform of a rewinding machine. Background Art

[0002] The rewinder is a special equipment for paper, mica tape and film. Its purpose is to rewind the paper rolls (called base paper rolls) produced by the papermaking machine in sequence. After rewinding, the paper is made into finished paper and shipped out of the factory.

[0003] The paper rewinder first rolls the paper into a roll. The paper roll is usually taken out manually or by raising and lowering the paper unloading platform to make the paper roll roll down automatically. When taking out the paper roll, workers need to manually stick the tape to prevent the paper from spreading out during the rolling and falling process. When sticking the tape, the paper unloading bucket falls to the tape sticking position, but the tape sticking position is usually very low, and the paper unloading platform is supported by an oil cylinder and is equipped with a very heavy paper roll. When the paper unloading bucket is sticking the tape, the oil cylinder often loses pressure due to excessive weight, such as a ruptured oil pipe, causing the paper roll to slip from the paper unloading bucket, causing Adult personal injury accidents, the existing invention patent with patent publication number CN111470354A discloses a safety self-locking mechanism for the paper unloading platform of a rewinder. The self-locking mechanism in the invention patent is located at the exit of the packaging space or / and at both ends of the packaging space. The self-locking mechanism can prevent the paper tube on the paper unloading bucket from rotating toward the worker, causing the paper tube to press on the worker and causing an accident, or the paper unloading bucket falls due to damage to the rotating mechanism, causing the paper tube to rotate toward the worker and causing an accident, so as to ensure the personal safety of the workers.

[0004] However, this invention patent still has corresponding problems: when the above patent restricts the paper tube through the self-locking structure to protect the personal safety of workers, the paper tube directly collides with the self-locking structure when falling, causing the self-locking structure to be subjected to a great impact force, which makes the self-locking structure extremely easy to be damaged and lose its function, thereby causing injuries to the workers. Summary of the invention

[0005] The object of the present invention is to provide a safety protection device for a paper unloading platform of a rewinding machine, which solves the technical problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A safety protection device for a paper unloading platform of a rewinding machine comprises a paper unloading bucket rotatably arranged on the rewinding machine and a frame arranged outside the rewinding machine, a movable material blocking structure is arranged at the discharge position of the paper unloading bucket, and the movable material blocking structure can adjust the height along the direction perpendicular to the discharge direction of the paper unloading bucket, a supporting structure and a buffer protection structure are arranged on the frame, and the buffer protection structure is rotatably connected to the frame, the supporting structure is used to support the paper unloading bucket when the paper unloading bucket rotates to unload, and in the process of the paper unloading bucket rotating to contact with the supporting structure, the buffer protection structure is clamped with the movable material blocking structure and is used to buffer the rolling paper roll, and a limiting device is arranged on the buffer protection structure, and the limiting device is used to lock the position of the buffer protection structure after the paper roll stops rolling.

[0008] As a preferred solution of the present invention, the movable material blocking structure includes a strip seat arranged at the edge of the paper unloading bucket, a plurality of baffles are slidably inserted on the strip seat, and the bottoms of the plurality of baffles all penetrate to the bottom of the strip seat, the bottoms of the plurality of baffles are commonly connected to a synchronous plate, an adjusting screw is threadedly connected to the synchronous plate, and the adjusting screw is rotatably connected to the strip seat.

[0009] As a preferred solution of the present invention, the support structure includes a support plate arranged on the frame in a horizontal direction, a lifting device is arranged on the support plate, a mounting plate is arranged on the top of the lifting device, a plurality of rollers are arranged on the upper surface of the mounting plate, and a plurality of support columns penetrating the support plate are arranged on the lower surface of the mounting plate.

[0010] As a preferred solution of the present invention, the buffer protection structure includes two connecting plates rotatably connected to the frame, each of the connecting plates is slidably provided with an elastic telescopic rod, the end of each elastic telescopic rod is rotatably connected to a contact plate for contacting the surface of the paper tube through a torsion spring, and a clamping assembly is provided on the outer wall of each elastic telescopic rod together with the strip seat.

[0011] As a preferred solution of the present invention, the elastic telescopic rod includes a fixed sleeve slidably connected to the connecting plate, the inner bottom of the fixed sleeve is slidably connected to a sliding column through a spring, and the two ends of the spring are respectively connected to the inner bottom of the fixed sleeve and the end of the sliding column, and the clamping assembly is connected to the outer wall of the fixed sleeve.

[0012] As a preferred solution of the present invention, the clamping assembly includes a vertical plate rotatably arranged on the strip seat away from the paper unloading bucket, and the vertical plate is fixed to the strip seat by bolts, a rotating seat is rotatably arranged on the vertical plate through a torsion spring, a hook and a locking plate are arranged on the rotating seat, and the locking plate is rotatably connected to the rotating seat and fixed to the opening on the hook by bolts, a clamping ring is arranged on the outer wall of the fixed sleeve, and the clamping ring is clamped to the hook through the locking plate.

[0013] As a preferred solution of the present invention, the contact plate includes a straight plate rotatably connected to the end of the sliding column through a torsion spring, both ends of the straight plate are rotatably connected to arc pressure plates through a torsion spring, elastic pads are provided on the inner arc surfaces of the two arc pressure plates, and when the deformation of the torsion spring is zero, the angle formed by the straight plate and the axis of the sliding column is less than 90°.

[0014] As a preferred solution of the present invention, the limiting device includes a winding roller rotatably arranged on a fixed sleeve, and one end of the winding roller is connected to a driving mechanism, a traction rope is connected to the winding roller, and the movable end of the traction rope is connected to the end of a sliding column, a plurality of metal sheets are arranged on the surface of the traction rope, a magnetic strip parallel to the sliding column is arranged on the surface of the sliding column, and the distance between the magnetic strip and the sliding column is greater than the wall thickness of the fixed sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention discharges paper rolls by rotating the paper unloading bucket. During the rotation of the paper unloading bucket, the paper roll that may roll down is blocked by the buffer protection structure, and the paper roll is buffered after rolling down to avoid the problem that the roller directly collides with the movable material blocking structure and causes damage to the movable material blocking structure. The movable material blocking structure provides support for the buffer protection structure to prevent the paper roll from directly falling from the paper unloading bucket, and when the paper roll is stopped by buffering, the limit device can limit the position of the buffer protection structure to avoid the problem of repeated rolling of the paper roll and multiple impacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 A schematic structural diagram of a first-view safety protection device for a paper unloading platform of a rewinder is provided for an embodiment of the present invention;

[0019] Figure 2 A structural schematic diagram of a second viewing angle of a safety protection device for a paper unloading platform of a rewinder is provided for an embodiment of the present invention;

[0020] Figure 3 A schematic cross-sectional view of a safety protection device for a paper unloading platform of a rewinding machine is provided in accordance with an embodiment of the present invention;

[0021] Figure 4Provided for embodiments of the present invention Figure 2 An enlarged schematic diagram of the structure of part A is shown in FIG.

[0022] The numbers in the figure represent the following:

[0023] 1. Paper unloading bucket; 2. Frame; 3. Movable material blocking structure; 4. Support structure; 5. Buffer protection structure; 6. Limiting device;

[0024] 301, bar seat; 302, baffle; 303, synchronization plate; 304, adjustment screw; 401, support plate; 402, lifting device; 403, mounting plate; 404, roller; 405, support column; 501, connecting plate; 502, elastic telescopic rod; 503, contact plate; 504, snap-on assembly; 506, fixed sleeve; 507, spring; 508, sliding column; 509, vertical plate; 510, hook; 511, locking plate; 512, snap-on ring; 513, straight plate; 514, arc pressure plate; 515, rotating seat; 601, winding roller; 602, traction rope; 603, metal sheet; 604, magnetic strip. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 4 As shown, the present invention provides a safety protection device for a paper unloading platform of a rewinding machine, comprising a paper unloading bucket 1 rotatably arranged on the rewinding machine and a frame 2 arranged outside the rewinding machine, a movable material blocking structure 3 is arranged at the discharge position of the paper unloading bucket 1, and the movable material blocking structure 3 can adjust the height along the direction perpendicular to the discharge direction of the paper unloading bucket 1, a supporting structure 4 and a buffer protection structure 5 are arranged on the frame 2, and the buffer protection structure 5 is rotatably connected to the frame 2, the supporting structure 4 is used to support the paper unloading bucket 1 when the paper unloading bucket 1 rotates to unload, and when the paper unloading bucket 1 rotates to contact the supporting structure 4, the buffer protection structure 5 is clamped with the movable material blocking structure 3 and is used to buffer the rolling paper roll, and a limiting device 6 is arranged on the buffer protection structure 5, and the limiting device 6 is used to lock the position of the buffer protection structure 5 after the paper roll stops rolling.

[0027] When the present application is actually used, after the base paper is rolled into a paper tube by the rewinder, the paper discharge bucket 1 is driven by the mechanism on the rewinder to rotate until the paper discharge bucket 1 contacts the support structure 4. During this process, one end of the buffer protection structure 5 moves with the paper discharge bucket 1, and the other end is wound around the connection with the frame 2, so that the buffer protection structure 5 always has a buffering effect on the paper tube, preventing the paper tube from rolling out of the paper discharge bucket 1 under the action of gravity, and a rigid support is provided to the buffer protection structure 5 through the movable material blocking structure 3, so that the buffer protection structure 5 has a maximum buffering stroke, which not only avoids the buffer protection structure 5 from being damaged due to excessive buffering, but also avoids the paper tube from directly rolling out of the paper discharge bucket 1. The paper tube is restricted by the movable material blocking structure 3 and the buffer protection structure 5, thereby ensuring the safety of workers' operations (such as manual pasting of paper, etc.) during the paper tube unloading process.

[0028] Secondly, when the paper tube is stopped by buffering, the position of the buffer protection structure 5 is fixed by the limit device 6 to prevent the buffer protection structure 5 from recoil on the paper tube and causing the paper tube to roll repeatedly in the paper unloading bucket 1, thereby avoiding the potential dangers brought by multiple rolling of the paper tube and the problem of collision damage to the buffer protection structure 5 and the movable material blocking structure 3.

[0029] The support structure 4 is used to ensure the stability of the paper unloading bucket 1 during the paper tube unloading process, and the movable material blocking structure 3 can adjust its own height to ensure that the paper tube is discharged from the paper unloading bucket 1 normally.

[0030] When unloading, one end of the buffer protection structure 5 is removed from the movable material blocking structure 3, that is, the clamping relationship between the buffer protection structure 5 and the movable material blocking structure 3 is released, and then the height of the movable material blocking structure 3 is adjusted so that the paper roll can be unloaded normally.

[0031] In this embodiment, it is a prior art that the paper unloading bucket 1 can rotate automatically on the rewinding machine, for example, it can be driven by a motor or other device, and the rewinding machine is also a prior art, and the technical principles of the two are not elaborated in detail here.

[0032] The movable material blocking structure 3 includes a strip seat 301 arranged at the edge of the paper unloading bucket 1, and a plurality of baffles 302 are slidably inserted on the strip seat 301, and the bottoms of the plurality of baffles 302 all penetrate to the bottom of the strip seat 301, and the bottoms of the plurality of baffles 302 are commonly connected to a synchronous plate 303, and an adjusting screw 304 is threadedly connected to the synchronous plate 303, and the adjusting screw 304 is rotatably connected to the strip seat 301.

[0033] By rotating the adjusting screw 304, the driving synchronous plate 303 drives the multiple baffles 302 to move up and down on the strip seat 301, so as to adjust the height of the multiple baffles 302, which can provide support for the buffer protection structure 5 and ensure the normal feeding of the paper roll.

[0034] The support structure 4 includes a support plate 401 arranged on the frame 2 in a horizontal direction, a lifting device 402 is arranged on the support plate 401, a mounting plate 403 is arranged on the top of the lifting device 402, a plurality of rollers 404 are arranged on the upper surface of the mounting plate 403, and a plurality of support columns 405 penetrating the support plate 401 are arranged on the lower surface of the mounting plate 403.

[0035] The height of the mounting plate 403 is adjusted by the lifting device 402 , thereby adjusting the height of the plurality of rollers 404 , so that the plurality of rollers 404 can support the paper unloading bucket 1 at different heights to meet different operation requirements. The support plate 401 is used to provide support for the rollers 404 .

[0036] The buffer protection structure 5 includes two connecting plates 501 rotatably connected to the frame 2, and an elastic telescopic rod 502 is slidably arranged on each connecting plate 501. The end of each elastic telescopic rod 502 is rotatably connected to a contact plate 503 for contacting the surface of the paper tube through a torsion spring, and a clamping assembly 504 is arranged on the outer wall of each elastic telescopic rod 502 together with the strip seat 301.

[0037] When in use, the elastic telescopic rod 502 is connected to the movable material blocking structure 3 through the clamping assembly 504, so that one end of the elastic telescopic rod 502 can follow the movable material blocking structure 3, that is, it can follow the rotation of the paper unloading bucket 1 and make the elastic telescopic rod 502 drive the connecting plate 501 to rotate, and at the same time, the other end of the elastic telescopic rod 502 slides on the connecting plate 501, ensuring that the elastic telescopic rod 502 can move with the paper unloading bucket 1, so that the two contact plates 503 can always provide timely buffering when the paper tube rolls down, which can effectively prevent the paper tube from rolling out of the paper unloading bucket 1 and causing collision damage to the movable material blocking structure 3.

[0038] By providing two elastic telescopic rods 502, the paper roll can be evenly stressed when being buffered, thereby preventing the paper roll from deflecting and rolling to the side of the paper discharge bucket 1, thereby causing an accident.

[0039] When unloading the paper tube, the clamping relationship between the elastic telescopic rod 502 and the strip seat 301 is released by the clamping assembly 504, and the connecting plate 501 is rotated to make the two elastic telescopic rods 502 away from the paper tube, and the height of the baffle 302 is adjusted, and finally the paper tube is unloaded.

[0040] Furthermore, the two connecting plates 501 can be connected by a rotating shaft, and the rotating shaft is connected to a driving device such as a motor installed on the frame 2. The two connecting plates 501 are driven and rotated by the driving device, so that the elastic telescopic rod 502 can be directly driven away from the paper tube when the paper tube is unloaded and the elastic telescopic rod 502 is released from the bar seat 301, so as to improve the portability of the device. When the elastic telescopic rod 502 rotates with the paper unloading bucket 1, the driving device is not started, and the connecting plate 501 can rotate freely, or other technical solutions can be used to achieve the technical effect.

[0041] The elastic telescopic rod 502 includes a fixed sleeve 506 slidably connected to the connecting plate 501, the inner bottom of the fixed sleeve 506 is slidably connected to the sliding column 508 through a spring 507, and the two ends of the spring 507 are respectively connected to the inner bottom of the fixed sleeve 506 and the end of the sliding column 508, and the clamping assembly 504 is connected to the outer wall of the fixed sleeve 506.

[0042] When the contact plate 503 contacts the paper tube, the slide column 508 is pressed by the paper tube to compress the spring 507, and at the same time, the slide column 508 slides into the fixed sleeve 506, and the paper tube is cushioned by the deformation of the spring 507, thereby ensuring the safety of the workers.

[0043] The clamping assembly 504 includes a vertical plate 509 rotatably arranged on the strip seat 301 away from the paper discharge bucket 1, and the vertical plate 509 is fixed to the strip seat 301 by bolts, and a rotating seat 515 is rotatably arranged on the vertical plate 509 through a torsion spring, and a hook 510 and a locking plate 511 are arranged on the rotating seat 515, and the locking plate 511 is rotatably connected to the rotating seat 515 and fixed to the opening of the hook 510 by bolts, and a clamping ring 512 is arranged on the outer wall of the fixed sleeve 506, and the clamping ring 512 is clamped to the hook 510 through the locking plate 511.

[0044] The clamping ring 512 is clamped on the hook 510, and the locking plate 511 is fixed to the opening of the hook 510 by bolts, so that the clamping ring 512 is confined in the closed space formed by the hook 510 and the locking plate 511. At this time, the fixing sleeve 506 is fixed on the vertical plate 509. After the vertical plate 509 is fixed by bolts, the elastic telescopic rod 502 can drive the rotating seat 515 to rotate through the hook 510 and the locking plate 511, so that one end of the elastic telescopic rod 502 can move up and down with the paper discharge bucket 1.

[0045] After the restriction on the clamping ring 512 is released and the bolts on the vertical plate 509 are removed, the vertical plate 509 can rotate freely to avoid interference with the unloading of the paper tube.

[0046] The contact plate 503 includes a straight plate 513 rotatably connected to the end of the sliding column 508 through a torsion spring, and both ends of the straight plate 513 are rotatably connected to arc pressure plates 514 through torsion springs. Elastic pads are provided on the inner arc surfaces of the two arc pressure plates 514, and when the deformation of the torsion spring is zero, the angle formed by the straight plate 513 and the axis of the sliding column 508 is less than 90°.

[0047] The straight plate 513 and the slide column 508 are inclined, so that when the paper tube rolls down during the rotation of the paper discharge bucket 1, the straight plate 513 can avoid its own corners from contacting the surface of the paper tube, thereby avoiding damage to the paper tube, and after the paper discharge bucket 1 continues to rotate, the straight plate 513 can rotate at the end of the slide column 508 under the pressure of the paper tube and compress the torsion spring, and the arc-shaped pressure plate 514 is used to assist in pressing the paper tube.

[0048] The elastic pad is used to further prevent the straight plate 513 from damaging the surface of the paper tube.

[0049] The limiting device 6 includes a winding roller 601 rotatably set on the fixed sleeve 506, and one end of the winding roller 601 is connected to a driving mechanism, a traction rope 602 is connected to the winding roller 601, and the movable end of the traction rope 602 is connected to the end of the sliding column 508, a plurality of metal sheets 603 are arranged on the surface of the traction rope 602, and a magnetic strip 604 parallel to the sliding column 508 is arranged on the surface of the sliding column 508, and the distance between the magnetic strip 604 and the sliding column 508 is greater than the wall thickness of the fixed sleeve 506.

[0050] The winding roller 601 is driven by a driving mechanism such as a motor to wind up or release the traction rope 602. When the traction rope 602 is released, the length of the slide post 508 extending out of the fixed sleeve 506 is longer, and the contact plate 503 is not in contact with the paper tube. When the traction rope 602 is wound up, the contact plate 503 is subjected to the pressure of the paper tube, and the winding roller 601 winds up the traction rope 602 to prevent the traction rope 602 from being wound around the slide post 508 and affecting the movement of the slide post 508 into the fixed sleeve 506. The traction rope 602 is wound up by the winding roller 601 so that the traction rope 602 is finally in a tensioned state, thereby limiting the position of the slide post 508 after being squeezed by the paper tube, and avoiding the problem that the slide post 508 squeezes the paper tube under the elastic force of the spring 507 and causes the paper tube to roll repeatedly.

[0051] By setting a magnetic strip 604 to adsorb the metal sheet 603 on the traction rope 602, the problem of the traction rope 602 being wound around the slide column 508 at a slow winding speed due to the large kinetic energy of the paper tube rolling down and causing the slide column 508 to move too fast is avoided. The traction rope 602 can be temporarily adsorbed on the surface of the magnetic strip 604 through the adsorption of the metal sheet 603 by the magnetic strip 604, and then the traction rope 602 is gradually wound onto the winding roller 601 through the winding of the winding roller 601.

[0052] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A safety protection device for a paper unloading platform of a rewinding machine, comprising a paper unloading bucket (1) rotatably arranged on the rewinding machine and a frame (2) arranged outside the rewinding machine, characterized in that: A movable material-blocking structure (3) is provided at the discharge point of the paper discharge bucket (1), and the movable material-blocking structure (3) can adjust the height in a direction perpendicular to the discharge direction of the paper discharge bucket (1); a support structure (4) and a buffer protection structure (5) are provided on the frame (2), and the buffer protection structure (5) is rotatably connected to the frame (2); the support structure (4) is used to support the paper discharge bucket (1) when the paper discharge bucket (1) rotates to discharge, and when the paper discharge bucket (1) rotates to contact the support structure (4), the buffer protection structure (5) is engaged with the movable material-blocking structure (3) and is used to buffer the rolling paper roll; a limiting device (6) is provided on the buffer protection structure (5), and the limiting device (6) is used to lock the position of the buffer protection structure (5) after the paper roll stops rolling; The movable material blocking structure (3) comprises a strip seat (301) arranged at the edge of the paper discharge bucket (1), and a plurality of baffles (302) are slidably inserted on the strip seat (301); The buffer protection structure (5) comprises two connecting plates (501) rotatably connected to the frame (2), each of the connecting plates (501) being slidably provided with an elastic telescopic rod (502), the end of each of the elastic telescopic rods (502) being rotatably connected to a contact plate (503) for contacting the surface of the paper tube via a torsion spring, and a clamping assembly (504) being provided on the outer wall of each of the elastic telescopic rods (502) together with the strip seat (301); The elastic telescopic rod (502) comprises a fixed sleeve (506) slidably connected to the connecting plate (501); the inner bottom of the fixed sleeve (506) is slidably connected to a sliding column (508) via a spring (507); and the two ends of the spring (507) are respectively connected to the inner bottom of the fixed sleeve (506) and the end of the sliding column (508); and the clamping assembly (504) is connected to the outer wall of the fixed sleeve (506); The limiting device (6) comprises a winding roller (601) rotatably arranged on a fixed sleeve (506), one end of the winding roller (601) is connected to a driving mechanism, a traction rope (602) is connected to the winding roller (601), and the movable end of the traction rope (602) is connected to the end of a sliding column (508), a plurality of metal sheets (603) are arranged on the surface of the traction rope (602), a magnetic strip (604) parallel to the sliding column (508) is arranged on the surface of the sliding column (508), and the distance between the magnetic strip (604) and the sliding column (508) is greater than the wall thickness of the fixed sleeve (506).

2. A safety protection device for a paper unloading platform of a rewinding machine according to claim 1, characterized in that: The bottoms of the plurality of baffles (302) all penetrate the bottom of the strip seat (301), the bottoms of the plurality of baffles (302) are commonly connected to a synchronization plate (303), an adjustment screw (304) is threadedly connected to the synchronization plate (303), and the adjustment screw (304) is rotatably connected to the strip seat (301).

3. The safety protection device for the paper unloading platform of the rewinding machine according to claim 1 is characterized in that: The support structure (4) comprises a support plate (401) arranged on the frame (2) in a horizontal direction, a lifting device (402) being arranged on the support plate (401), a mounting plate (403) being arranged on the top of the lifting device (402), a plurality of rollers (404) being arranged on the upper surface of the mounting plate (403), and a plurality of support columns (405) penetrating the support plate (401) being arranged on the lower surface of the mounting plate (403).

4. The safety protection device for the paper unloading platform of the rewinding machine according to claim 1, characterized in that: The clamping assembly (504) comprises a vertical plate (509) rotatably arranged on a side of the strip seat (301) away from the paper discharge bucket (1), and the vertical plate (509) is fixed to the strip seat (301) by bolts; a rotating seat (515) is rotatably arranged on the vertical plate (509) by a torsion spring; a hook (510) and a locking plate (511) are arranged on the rotating seat (515), and the locking plate (511) is rotatably connected to the rotating seat (515) and fixed to an opening on the hook (510) by bolts; a clamping ring (512) is arranged on the outer wall of the fixed sleeve (506), and the clamping ring (512) is clamped to the hook (510) by the locking plate (511).

5. The safety protection device for the paper unloading platform of a rewinding machine according to claim 1, characterized in that: The contact plate (503) comprises a straight plate (513) rotatably connected to the end of the sliding column (508) via a torsion spring, and both ends of the straight plate (513) are rotatably connected to arc-shaped pressure plates (514) via torsion springs, and elastic pads are provided on the inner arc surfaces of the two arc-shaped pressure plates (514), and when the deformation of the torsion spring is zero, the angle formed by the straight plate (513) and the axis of the sliding column (508) is less than 90°.

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