CN218905981U

CN218905981U - Automatic speed regulation sheet grinder

Info

Publication number: CN218905981U
Application number: CN202222960416.0U
Authority: CN
Inventors: 赵言航
Original assignee: Guangdong Delijun Intelligent Equipment Co ltd
Current assignee: Guangdong Delijun Intelligent Equipment Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-04-25
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses an automatic speed regulation sheet grinder, which comprises a box body, a clamping device, a grinding mechanism and an electric control unit, wherein the clamping device, the grinding mechanism and the electric control unit are arranged in the box body; the sheet edge materials to be crushed sequentially pass through the swing arm guide mechanism, the sheet edge material feeding port and the clamping and conveying device to enter the crushing mechanism for crushing; the swing arm guide mechanism swings to sense the tensioning degree of the sheet rim charge, and the electric control unit automatically adjusts the feeding speed of the clamping device according to the tensioning degree of the sheet rim charge. The utility model can automatically adjust the speed of the sheet edge material entering the pulverizer, does not need manual adjustment, and saves manpower.

Description

Automatic speed regulation sheet grinder

Technical Field

The utility model relates to the technical field of crushers, in particular to an automatic speed regulation sheet crusher.

Background

Existing sheet shredders are used to recycle the scrap produced by a sheet extruder during the extrusion process, such as the scrap produced during the extrusion of PET plastic sheets. The feeding speed of the sheet grinder needs to be matched with the production speed of the sheet extruder.

The existing sheet grinder generally has the speed regulation that a frequency converter is arranged, then after the production line speed of the sheet extruder is observed manually, the pre-estimated value on the frequency converter is manually set to control the feeding speed of a traction clamping device on the sheet grinder.

The mode of manually setting the frequency converter to adjust the speed is difficult to match and adapt to the sheet extruder of different production line speeds for use, and the broken sheets of sheet appear easily, or detain a lot of rim charge and can't timely smash in the workshop and retrieve, need the manual numerical value of setting the frequency converter frequently to control material feeding unit's pay-off speed simultaneously, complex operation wastes manpower, inefficiency.

Accordingly, the prior art is in need of improvement.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide an automatic speed regulation sheet grinder, which aims to automatically regulate the feeding speed of sheet rim charge without manual regulation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic speed regulation sheet grinder, includes the box, sets up clamp send device, crushing mechanism and automatically controlled unit in the box, wherein:

the box body is provided with a sheet rim charge feeding port, the front end of a feeding path of the sheet rim charge feeding port on the box body is provided with a swing arm guide mechanism, and the swing arm guide mechanism is electrically connected with the electric control unit;

the sheet edge materials to be crushed sequentially pass through the swing arm guide mechanism, the sheet edge material feeding port and the clamping and conveying device to enter the crushing mechanism for crushing;

the swing arm guide mechanism swings to sense the tensioning degree of the sheet rim charge, and the electric control unit automatically adjusts the feeding speed of the clamping device according to the tensioning degree of the sheet rim charge.

The swing arm material guide mechanism comprises a bracket, an upper roller assembly, a lower roller assembly, a swing rod, a speed regulation potentiometer and a reset spring;

the two brackets are respectively arranged on the box body, the two ends of the upper roller assembly are rotatably arranged at the upper ends of the two brackets, the two swinging rods are arranged on the upper roller assembly, the lower ends of the two swinging rods are provided with the lower roller assembly to suspend the lower roller assembly, and reset springs are respectively connected between the two swinging rods and the two brackets;

one end of the upper roller assembly is provided with the speed regulating potentiometer, and the speed regulating potentiometer is electrically connected with the electric control unit.

Wherein, two supports are installed on the top on the box, just two supports are the arc arm.

Wherein, upper roller subassembly, lower roller subassembly all include the axle, the roller of cover outside the axle is established.

The swing arm guide mechanism further comprises a guide ring arranged on the box body, the guide ring is positioned in front of the lower roller assembly, and the sheet penetrates into the guide ring and then winds the upper roller assembly and the lower roller assembly.

The box body is provided with a sound-proof cover above the sheet edge feed inlet, the sound-proof cover is provided with a sound-proof cover feed inlet, a first guide roller is arranged outside the sound-proof cover at the position of the sound-proof cover feed inlet, and a second guide roller is arranged above the sound-proof cover adjacent to the sheet edge feed inlet.

The clamping and conveying device comprises a traction motor and two clamping rollers in transmission connection with the traction motor, the two clamping rollers rotate in opposite directions and clamp the sheet, and the traction motor is electrically connected with the electric control unit.

Wherein, crushing mechanism includes crushing motor, crushing room, installs crushing unit in the crushing room, crushing motor with crushing unit transmission is connected.

The crushing unit comprises a main shaft connected with the crushing motor in a transmission way, a movable cutter arranged on the main shaft, and a fixed cutter arranged in the crushing chamber and staggered with the movable cutter.

The bottom of the crushing chamber is further provided with a screen, the bottom of the crushing chamber is further provided with a suction box below the screen, a feeding fan is further arranged below the suction box, the input end of the feeding fan is connected with the bottom of the suction box, and the output end of the feeding fan is connected with a discharge pipe.

It should be understood that within the scope of the present utility model, the above technical features of the present utility model and the technical features specifically described in the following (embodiment) may be combined with each other, so as to constitute a new or preferred technical solution, which is not described in detail herein.

According to the automatic speed-regulating sheet grinder, the swing arm guide mechanism is arranged on the box body, the swing arm guide mechanism swings to sense the tensioning degree of the sheet rim charge entering the sheet grinder, the electric control unit on the sheet grinder automatically adjusts the feeding speed of the clamping and conveying device according to the tensioning degree of the sheet rim charge, if the tensioning degree of the sheet rim charge entering the sheet grinder is loose, the feeding speed of the clamping and conveying device is controlled to be higher, and the tensioning degree of the sheet rim charge entering the sheet grinder is controlled to be lower, so that the feeding speed of the clamping and conveying device can be automatically matched with the feeding speed of the sheet rim charge entering the sheet grinder to match the production speed of the sheet extruder, manual adjustment is not needed, labor is saved, and efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of an automatic speed regulating sheet grinder of the present utility model;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a schematic diagram of a front side perspective view of the structure of FIG. 1;

FIG. 4 is a schematic diagram of a right side perspective view of the structure of FIG. 1;

fig. 5 is a schematic diagram showing the state of the swing lever in the swing arm guide mechanism when the sheet is tensioned;

FIG. 6 is a schematic view showing the state of the swing lever in the swing arm guide mechanism when the sheet is relaxed;

FIG. 7 is a schematic structural view of a swing arm guide mechanism;

FIG. 8 is an exploded view of the structure of FIG. 7;

fig. 9 is a partially enlarged schematic view at a in fig. 3.

Reference numerals illustrate:

100-pulverizer, 1-box, 2-pinch device, 21-traction motor, 22-pinch roller, 3-pulverizing mechanism, 31-pulverizing motor, 32-pulverizing chamber, 33-pulverizing unit, 331-main shaft, 332-moving knife, 333-stationary knife, 34-screen, 35-suction box, 36-belt, 37-buffer hopper, 4-electric control unit, 5-sheet edge feed inlet, 6-swing arm guide mechanism, 61-bracket, 62-upper roller assembly, 63-lower roller assembly, 601-shaft, 602-roller, 64-swing rod, 65-speed regulation potentiometer, 66-reset spring, 67-guide ring, 7-sound-proof housing, 71-sound-proof housing feed inlet, 72-first guide roller, 73-second guide roller, 8-feeding fan, 81-discharge pipe, 200-sheet edge.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be either a fixed connection or a removable connection or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 to 6, the present utility model provides an automatic speed regulation sheet grinder 100, which includes a box 1, a pinch device 2 disposed in the box 1, a grinding mechanism 3 and an electronic control unit 4. The box 1 comprises a frame and a shell arranged outside the frame in a surrounding manner, the clamping and conveying device 2 clamps and conveys sheet rim charge to be crushed, such as PET sheet rim charge, into the crushing mechanism 3 for crushing, and a crushing cutter is arranged in the crushing mechanism 3. The electric control unit 4 controls the clamping device 2 and the electric elements in the crushing mechanism 3, the electric control unit 4 can be controlled by a PLC, and the electric control unit 4 is provided with a control button on the outer surface of the box body 1.

As shown in fig. 2 and 3, the box 1 is provided with a sheet rim charge inlet 5, a swing arm guide mechanism 6 is disposed at the front end of the feeding path of the sheet rim charge inlet 5 on the box 1, and the swing arm guide mechanism 6 is electrically connected with the electronic control unit 4. The sheet rim charge 200 to be crushed sequentially passes through the swing arm guide mechanism 6, the sheet rim charge feeding port 5 and the clamping device 2 to enter the crushing mechanism 3 for crushing.

As shown in fig. 3, the sheet edge 200 to be crushed is wound around and passes through the swing arm guide mechanism 6, then enters the sheet edge feed port 5 at the upper end of the box 1, then enters the pinch device 2 in the box 1 along the sheet edge feed port 5, and the pinch device 2 clamps the sheet edge 200 and is driven by power to be fed into the crushing mechanism 3 below the pinch device for crushing.

According to the utility model, the swing arm guide mechanism 6 swings to sense the tensioning degree of the sheet rim charge 200, and the electric control unit 4 automatically adjusts the feeding speed of the clamping and conveying device 2 according to the tensioning degree of the sheet rim charge 200. The swing arm guide mechanism 6 is provided with a speed regulating potentiometer to swing and sense the tensioning degree of the sheet edge 200. Since the front end of the sheet material rim charge 200 is a sheet material extruder from the front end of the production line, the middle of the sheet material rim charge 200 is wound on the swing arm material guide mechanism 6, and the rear end of the sheet material rim charge is clamped by the clamping and conveying device 2. The clamping device 2 on the sheet grinder 100 continuously feeds the crushing mechanism 3, so when the discharging speed of the sheet extruder is low, as shown in the state of the sheet rim charge 200 in fig. 5, the sheet rim charge 200 on the sheet grinder 100 is tensioned, a speed regulating potentiometer on the swing arm guide mechanism 6 can swing to sense the tightness of the sheet rim charge 200 and feed back to the electric control unit 4, and the electric control unit 4 controls the clamping device 2 to slow down the feeding speed so as to match the slow speed of the sheet extruder and prevent the sheet rim charge 200 from being broken; when the discharging speed of the sheet extruder is high, the clamping device 2 keeps the original feeding speed, so that the tensioning degree of the sheet rim charge 200 on the sheet crusher 100 can be loosened, as shown in the state of the sheet rim charge 200 in fig. 6, the speed regulating potentiometer on the swing arm material guiding mechanism 6 can swing to sense the loosening of the sheet rim charge 200 and feed back to the electric control unit 4, and the electric control unit 4 controls the clamping device 2 to accelerate the feeding speed so as to match the speed of the sheet extruder and prevent the sheet rim charge 200 from being detained. According to the sheet grinder 100, the swing arm material guide mechanism 6 is arranged, and the electric control unit 4 is combined, so that the feeding speed of the sheet rim charge 200 on the sheet grinder 100 can be automatically adjusted to match the speed of the sheet extruder, manual adjustment is not needed, labor is saved, and the production efficiency is improved.

As shown in fig. 7 and 8, the swing arm guide mechanism 6 of the present utility model includes a bracket 61, an upper roller assembly 62, a lower roller assembly 63, a swing link 64, a speed regulating potentiometer 65, and a return spring 66.

The two brackets 61 are respectively arranged on the box body 1, two ends of the upper roller assembly 62 are rotatably arranged at the upper ends of the two brackets 61, two swinging rods 64 are arranged at the upper ends of the two swinging rods 64 and are arranged on the upper roller assembly 62, the lower ends of the two swinging rods 64 are provided with the lower roller assembly 63 to suspend the lower roller assembly 63, and return springs 66 are respectively connected between the two swinging rods 64 and the two brackets 61; one end of the upper roller assembly 62 is provided with the speed regulating potentiometer 65, and the speed regulating potentiometer 65 is electrically connected with the electric control unit 4.

In the embodiment of the present utility model, the lower ends of the two brackets 61 are fixed to the case 1. The upper roller assemblies 62 are installed at the upper ends of the two brackets 61, the upper roller assemblies 62 can rotate relative to the brackets 61, meanwhile, swing rods 64 are installed at two sides of the upper roller assemblies 62 respectively, and lower roller assemblies 63 are installed at the lower ends of the two swing rods 64. The lower roller assembly 63 is suspended from the support 61. As shown in fig. 5 and 6, the sheet edge material 200 is wound up from the lower end of the lower roller assembly 63 to the upper end of the lower roller assembly 63, wound up from the left side of the upper roller assembly 62 to the right side of the upper roller assembly 62, and then enters the sheet edge material feed port 5 on the casing 1. The two ends of the sheet edge material 200 are subjected to the tensile force of the sheet extruder and the clamping and conveying device 2 on the sheet grinder 100, the tensile force also acts on the lower roller assembly 63, the tensile force on the lower roller assembly 63 also changes due to different tensioning degrees of the sheet edge material 200, so that the lower roller assembly 63 moves, the lower roller assembly 63 and the swinging rod 64 are connected together, the swinging rod 64 swings to drive the upper roller assembly 62 to rotate, the upper roller assembly 62 rotates and is sensed by the speed regulating potentiometer 65 arranged on the upper roller assembly 62, the speed regulating potentiometer 65 feeds back a rotation angle signal of the upper roller assembly 62, namely a swinging angle signal of the swinging rod 64 to the electric control unit 4 through a lead 68, and the electric control unit 4 controls the feeding speed of the clamping and conveying device 2 to the grinding mechanism 3 according to the rotation angle of the upper roller assembly 62. The return spring 66 allows the swing link 64 to return to the original position after the sheet edge 200 is changed from the tensed state to the relaxed state, and on the other hand, the return spring 66 prevents the sheet edge 200 from being suddenly pulled or suddenly released when the pinch device 2 shifts speed, thereby playing a role of buffering.

Preferably, as shown in fig. 8, the upper roller assembly 62 and the lower roller assembly 63 of the embodiment of the present utility model each include a shaft 601 and a roller 602 sleeved outside the shaft 601. The roller 602 is sleeved on the shaft 601 and rotates relative to the shaft 601, so that the sheet edge 200 is wound on the roller 602 between the upper roller assembly 62 and the lower roller assembly 63, and the sheet edge 200 rolls rather than slides relative to the upper roller assembly 62 and the lower roller assembly 63, so that friction can be reduced.

Further, the swing arm guide mechanism 6 of the present utility model further includes a guide ring 67 mounted on the case 1, the guide ring 67 is located in front of the lower roller assembly 63, and the sheet edge 200 is wound around the upper and lower roller assemblies after penetrating into the guide ring 67. That is, the sheet material rim charge 200 passes through the material guiding ring 67 before being wound on the lower roller assembly 63, so as to play a role in guiding and limiting, and prevent the sheet material rim charge 200 from shaking on the lower roller assembly 63.

Specifically, as shown in fig. 5, after the sheet edge material 200 passes through the guide ring 67, it is wound from the lower end of the drum 602 of the lower roller assembly 63 to the upper end of the drum 602 of the lower roller assembly 63, and then wound up to the left side of the drum 602 of the upper roller assembly 62 and then wound up to the right side of the drum 602 of the upper roller assembly 62. When the discharging speed of the sheet extruder is slow, the sheet rim charge 200 on the sheet crusher 100 is tensioned, at this time, the lower roller assembly 63 is pulled leftwards, so that the lower roller assembly 63 moves leftwards, the swing rod 64 is driven to swing leftwards, the included angle between the swing rod 64 and the bracket 61 is increased, the swing rod 64 swings leftwards to drive the shaft 601 of the upper roller assembly 62 at the upper end of the swing rod 64 to rotate clockwise, the rotating angle of the shaft 601 of the upper roller assembly 62 is sensed by the speed regulating potentiometer 65 connected with the shaft 601 and fed back to the electronic control unit 4, and the electronic control unit 4 controls the pinch device 2 to slow the feeding speed to the crushing mechanism 3.

When the discharging speed of the sheet extruder is faster than the feeding speed of the pinch device 2, the sheet rim charge 200 on the sheet crusher 100 is in a loose state, at this time, the lower roller assembly 63 is pulled rightward by the return spring 66, so that the lower roller assembly 63 moves rightward, the swing rod 64 is driven to swing rightward, an included angle between the swing rod 64 and the bracket 61 is reduced, the swing rod 64 swings rightward to drive the shaft 601 of the upper roller assembly 62 at the upper end of the swing rod 64 to rotate counterclockwise, the rotation angle of the shaft 601 of the upper roller assembly 62 is sensed by the speed regulating potentiometer 65 connected with the shaft 601 and fed back to the electronic control unit 4, and the electronic control unit 4 controls the pinch device 2 to accelerate the feeding speed to the crushing mechanism 3.

Preferably, two brackets 61 of the swing arm guide mechanism 6 of the present utility model are mounted on top ends of the case 1, and the two brackets 61 are arc-shaped arms. The support 61 of the arc-shaped arm structure enables the initial position of the lower end of the swing rod 64 to have a certain angle relative to the support 61, so that the bending angle of the sheet material rim charge 200 during winding is not too vertical, and the sheet material rim charge 200 is convenient to convey.

With continued reference to fig. 2 and 3, the box 1 of the sheet grinder 100 of the present utility model is covered with a sound-proof cover 7 above the sheet rim charge inlet 5, the sound-proof cover 7 is provided with a sound-proof cover inlet 71, a first material guiding roller 72 is disposed outside the sound-proof cover 7 at the position of the sound-proof cover inlet 71, and a second material guiding roller 73 is disposed in the sound-proof cover 7 adjacent to the upper side of the sheet rim charge inlet 5. The sheet edge material 200 is wound out from the upper roller assembly 62 on the swing arm guide mechanism 6, then wound on the first guide roller 72, enters the sound-proof housing feed inlet 71, is wound on the second guide roller 73 above the sheet edge material feed inlet 5, then enters the sheet edge material feed inlet 5 on the box body 1, and the second guide roller 73 converts the sheet edge material 200 moving in the horizontal direction into the sheet edge material 200 moving in the vertical direction. The soundproof cover 7 performs a soundproof function on noise emitted from the sheet edge material inlet 5. The inner wall of the soundproof cover 7 of the present utility model is provided with a soundproof material such as soundproof cotton. Preferably, the inner wall of the entire case 1 of the present utility model is also provided with a sound insulating material.

As shown in fig. 3, the pinch device 2 of the present utility model includes a traction motor 21, two pinch rollers 22 drivingly connected to the traction motor 21, the two pinch rollers 22 rotate in opposite directions and pinch the sheet edge 200, and the traction motor 21 is electrically connected to the electronic control unit 4. The traction motor 21 rotates to drive the two clamping rollers 22 to rotate in opposite directions, so that the sheet rim charge 200 entering from the sheet rim charge feeding port 5 is clamped and fed into the crushing mechanism 3. The rotation speed of the traction motor 21 is regulated and controlled by the electric control unit 4 according to the swing angle of the swing rod 64 in the swing arm material guide mechanism 6.

As shown in fig. 3 and 4, the pulverizing mechanism 3 of the present utility model includes a pulverizing motor 31, a pulverizing chamber 32, and a pulverizing unit 33 installed in the pulverizing chamber 32, and the pulverizing motor 31 is drivingly connected to the pulverizing unit 33. The crushing motor 31 is controlled by the electric control unit 4 to power the crushing unit 33, and the crushing unit 33 is installed in the crushing chamber 32.

Specifically, as shown in fig. 4 and 9, the crushing unit 33 includes a main shaft 331 drivingly connected to the crushing motor 31, a movable blade 332 mounted on the main shaft 331, and a fixed blade 333 mounted in the crushing chamber 32 and disposed to be staggered with the movable blade 332. The crushing motor 31 is in transmission connection with the main shaft 331 by adopting a belt 36. A buffer hopper 37 for accommodating the sheet edge 200 fed by the pinch device 2 is also provided above the pulverizing chamber 32.

The crushing motor 31 drives the main shaft 331 to rotate through the belt 36, the main shaft 331 rotates to drive the movable knife 332 thereon to rotate, the movable knife 332 and the fixed knife 333 in the crushing chamber 32 are arranged in a staggered manner, a cutting crushing surface is formed by a gap between the movable knife 332 and the fixed knife 333, and the sheet edge 200 positioned at the gap position is crushed by the relative movement between the movable knife 332 and the fixed knife 333.

Preferably, as shown in fig. 4 and 9, a screen 34 is further disposed at the bottom of the crushing chamber 32, a suction box 35 is further disposed below the screen 34 at the bottom of the crushing chamber 32, a feeding fan 8 is further disposed below the suction box 35, an input end of the feeding fan 8 is connected with the bottom of the suction box 35, and an output end of the feeding fan 8 is connected with a discharging pipe 81.

The screen 34 can screen the crushed small particle block materials into the suction box 35, and the larger particle block materials can be crushed again by rotating the driven knife 332 to the clearance with the fixed knife 333. The feeding fan 8 can automatically suck out crushed materials in the material sucking box 35 and discharge the crushed materials from the discharging pipe 81, so that manual discharging is not needed, and labor is saved.

Meanwhile, the sheet grinder 100 of the utility model seals the whole clamping device 2 and the grinding mechanism 3 through the box body 1, so that dust generated during grinding is prevented from exposing out of the box body 1 to pollute the environment.

According to the automatic speed regulation sheet grinder 100 provided by the embodiment of the utility model, the swing arm guide mechanism 6 is arranged on the box body 1, the swing arm guide mechanism 6 swings to sense the tensioning degree of the sheet rim charge 200 entering the sheet grinder 100, the electric control unit 4 on the sheet grinder 100 automatically regulates the feeding speed of the clamping device 2 according to the tensioning degree of the sheet rim charge 200, if the tensioning degree of the sheet rim charge entering the sheet grinder 100 is loose, the feeding speed of the clamping device 2 is controlled to be faster, the tensioning degree of the sheet rim charge entering the sheet grinder 100 is controlled to be tighter, and the feeding speed of the clamping device 2 is controlled to be slower.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims, rather, as the description of the utility model covers all embodiments of the utility model.

Claims

1. The utility model provides an automatic speed governing sheet rubbing crusher, includes the box, sets up clamp in the box send device, crushing mechanism and automatically controlled unit, its characterized in that:

2. The automatic speed regulation sheet grinder of claim 1, wherein the swing arm guide mechanism comprises a bracket, an upper roller assembly, a lower roller assembly, a swing rod, a speed regulation potentiometer and a return spring;

3. The automatically adjustable speed sheet material shredder according to claim 2, wherein the two brackets are mounted on top of the housing and the two brackets are arcuate arms.

4. The automatically speed adjusting sheet grinder of claim 2, wherein the upper roller assembly and the lower roller assembly each comprise a shaft and a roller sleeved outside the shaft.

5. The automatic speed regulating sheet grinder of claim 2, wherein the swing arm guide mechanism further comprises a guide ring mounted on the box body, the guide ring is positioned in front of the lower roller assembly, and the sheet edge material is wound around the upper roller assembly and the lower roller assembly after penetrating into the guide ring.

6. The automatic speed regulation sheet grinder according to claim 1, wherein a sound-proof cover is covered above the sheet edge feed inlet by the box body, a sound-proof cover feed inlet is arranged on the sound-proof cover, a first guide roller is arranged outside the sound-proof cover at the position of the sound-proof cover feed inlet, and a second guide roller is arranged in the sound-proof cover and adjacent to the upper part of the sheet edge feed inlet.

7. The automatic speed regulation sheet grinder of claim 1, wherein the pinch device comprises a traction motor, two pinch rollers in driving connection with the traction motor, the two pinch rollers rotate in opposite directions and clamp the sheet rim charge, and the traction motor is electrically connected with the electronic control unit.

8. The automatically speed adjusting sheet shredder according to claim 1, wherein the shredder mechanism comprises a shredder motor, a shredder chamber, and a shredder unit mounted within the shredder chamber, the shredder motor being drivingly connected to the shredder unit.

9. The automatically speed adjusting sheet grinder of claim 8, wherein the grinding unit includes a main shaft drivingly connected to the grinding motor, a moving blade mounted on the main shaft, and a stationary blade mounted in the grinding chamber and staggered with the moving blade.

10. The automatic speed regulation sheet grinder of claim 9, wherein a screen is further arranged at the bottom of the grinding chamber, a suction box is further arranged at the bottom of the grinding chamber below the screen, a feeding fan is further arranged below the suction box, an input end of the feeding fan is connected with the bottom of the suction box, and an output end of the feeding fan is connected with a discharge pipe.