CN215353835U

CN215353835U - Drawer type kneader with protective structure

Info

Publication number: CN215353835U
Application number: CN202023287147.3U
Authority: CN
Inventors: 魏涛; 张鑫
Original assignee: Deli Group Co Ltd
Current assignee: Deli Group Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-12-31
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a drawer type paper shredder with a protective structure, which comprises a body, a paper shredding knife and a protective door assembly, wherein a drawer which can be drawn out from the front side of the body and is used for storing waste paper is arranged on the body, a paper inlet is formed in the bottom wall of the front part of the drawer, the paper shredding knife is arranged in the body, is positioned below the drawer and is arranged corresponding to the paper inlet, the protective door assembly is provided with a sliding plate which is arranged above the paper shredding knife and below the drawer and can open or cover the paper inlet, and a connecting rod assembly which can drive the sliding plate to slide forwards so as to close the paper inlet is arranged on the side of the protective door assembly. The paper shredder can place a plurality of pieces of paper in the drawer at one time, so that a large amount of waste paper is continuously crushed under the condition of saving time and labor, and the use is convenient; the protective door assembly can cover the paper inlet in a non-paper shredding state, so that the paper shredding knife is sealed in the body, the safety protection performance is improved, the protective door assembly opens the paper inlet in the paper shredding state, normal paper shredding is realized, and the operation is convenient.

Description

Drawer type kneader with protective structure

Technical Field

The utility model relates to the technical field of paper shredders, in particular to a drawer type paper shredder with a protection structure.

Background

The paper shredder is a common office equipment, mainly puts the waste paper between the pair roller of the paper shredder core, rotates the pair roller to shred the waste paper document. The paper shredder can only put a small amount of paper at the paper inlet at one time, and if too much paper is put in the paper shredder, paper jam is easily caused, and the paper shredder is even damaged. Therefore, when a large amount of paper needs to be crushed, the paper can only be manually put into the paper inlet for multiple times, the operation is time-consuming and labor-consuming, and great inconvenience is brought to a user.

In order to solve the above problems, the chinese utility model patent "a shredder with automatic paper feeding" (application No. CN201720812594.5), entitled publication No. CN206868376U, discloses a structure, which comprises a shredder body, a frame, a core roller pair and a paper shredding box arranged in the shredder body, wherein the core roller pair is positioned in the frame, the paper shredding box is positioned under the core roller pair, the frame is provided with a paper feeding port for feeding waste paper between the core roller pair, the structure further comprises a paper feeding mechanism positioned above the core roller pair and a paper pressing mechanism positioned in the paper shredding box, the paper feeding mechanism comprises a placing groove and a motor, and the placing groove is provided with a paper outlet corresponding to the paper feeding port of the frame; one side in the placing groove is provided with a support plate which is obliquely arranged, and one side of the paper outlet is aligned with the support plate; a pressure plate is connected in the placing groove in a sliding manner, the pressure plate is parallel to the support plate, and an elastic piece is arranged between the inner wall of the placing groove far away from one side of the support plate and the pressure plate; the supporting plate is provided with a plurality of through grooves, rolling shafts are arranged outside the supporting plate and positioned at the through grooves, compression rollers are fixed outside the rolling shafts, and the outer walls of the compression rollers extend into the through grooves to be aligned with the inner walls of the supporting plate; the motor is fixed outside the placing groove, and an output shaft of the motor is connected with the rolling shaft through a transmission belt; the paper pressing mechanism comprises a piston column, a plurality of supporting rods and a plurality of pressing rods, a communicated cavity is formed in the bottom of the shredded paper box, cavity channels communicated with the cavity are formed in the inner wall of the shredded paper box, and the number of the cavity channels is the same as that of the supporting rods; the piston column is connected in the cavity in a sealing and sliding manner, the support rod is vertical to the inner wall of the shredded paper box, and the lower end of the pressure rod is positioned in the cavity and hinged with the upper end of the support rod.

The paper shredder can place a large amount of waste paper in the placing groove at one time, and paper is conveyed through the paper feeding mechanism to automatically shred the paper, so that time and labor are saved. However, since the placing grooves are arranged obliquely and vertically, after the waste paper is placed in the placing grooves, the waste paper tends to slide downwards due to gravity, if the pressure given by the pressing plates to the paper is too large, smooth conveying of the waste paper is difficult to realize, and if the pressure given by the pressing plates to the paper is too small, a plurality of pieces of waste paper fall simultaneously to block the movement due to accommodation. Meanwhile, the movement is arranged below the corresponding anti-placement groove, and under the non-paper shredding state, if a hand of a user stretches into the paper by mistake, great danger is easy to exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art and provides a drawer type paper shredder with a protection structure, which can seal and cover a paper shredding knife in a non-paper shredding state so as to improve the safety and is convenient to operate.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a drawer type kneader with protective structure, includes body, shredded paper sword and guard gate subassembly, be provided with the drawer that is used for depositing waste paper that can take out from the body front side on the body, the paper feed mouth has been seted up on the diapire of drawer front portion, the shredded paper sword is located in the body and is located the drawer below, corresponds the paper feed mouth and arranges, guard gate subassembly has locates shredded paper sword top, drawer below and can open the slide that the paper feed mouth was covered, thereby guard gate subassembly side is provided with the link assembly that can drive the slide and slide forward and close the paper feed mouth.

In the above scheme, the top of the body is provided with a cover plate capable of being opened, the connecting rod assembly is connected between the cover plate and the sliding plate, the sliding plate covers the paper inlet under the driving of the connecting rod assembly in the opening state of the cover plate, and the sliding plate opens the paper inlet in the closing state of the cover plate. By adopting the structure, the sliding plate can be conveniently moved by opening and closing the cover plate, and the operation is convenient.

Preferably, the connecting rod assembly comprises a shifting part, a positioning sleeve, a first connecting rod and a second connecting rod, the shifting part is connected to the edge of the side part of the rear end of the cover plate, the shifting part is arranged upwards in the closed state of the cover plate, the positioning sleeve is vertically arranged on the body below the cover plate and is provided with a mounting groove which is through from top to bottom and is open at the front and the rear, the upper part of the first connecting rod is rotatably connected to the upper part of the mounting groove through a pin shaft, the lower part of the first connecting rod extends out of the opening of the mounting groove, the lower end of the first connecting rod is rotatably connected with the rear end of the second connecting rod, and the front end of the second connecting rod is connected with the sliding plate. When the cover plate is turned over, the stirring piece rotates backwards and gradually abuts against the front side wall of the first connecting rod, so that the first connecting rod rotates around the pin shaft to push the second connecting rod to move forwards, and the sliding plate slides forwards to cover the paper inlet; when the cover plate is closed, the stirring piece is vertically arranged, the pressure resisting force on the first connecting rod is cancelled, and at the moment, the sliding plate can move backwards to open the paper feeding port.

Preferably, the top wall of the body is provided with an assembly opening for installing a cover plate, the rear edge of the cover plate is rotatably connected to the rear edge of the assembly opening, the end part of the rear edge of the cover plate is rotatably connected with the corresponding body through a rotating shaft, and the rotating shaft is provided with a torsion spring which can enable the cover plate to keep the angle between the cover plate and the top wall of the body to be 25-120 degrees in an opening state, preferably 30-45 degrees. Above-mentioned structure is convenient for under shredded paper state or non-shredded paper state, switches the state that opens and shuts of paper feed mouth through the slide to improve the safety protection performance, when the apron is in above-mentioned angle, can cover the paper feed mouth.

In the above scheme, the body is internally provided with a supporting plate for supporting the drawer, the supporting plate is provided with a paper passing port arranged corresponding to the paper feeding port, the bottom wall of the supporting plate is provided with a positioning plate arranged close to the paper passing port, the sliding plate can be constrained on the positioning plate in a sliding manner relative to the positioning plate, the sliding plate covers the paper passing port and the paper feeding port in a state of being overlapped with the positioning plate, and the sliding plate and the positioning plate are opened in a state of being staggered. Above-mentioned structure is convenient for open the paper feed mouth or cover through sliding of slide, satisfies the shredded paper demand when opening, improves the security when covering.

Preferably, the cross section of the positioning plate is an L-shaped structure, and an accommodating area for accommodating the sliding plate is formed between the transverse part of the L-shaped structure and the lower wall surface of the supporting plate. The vertical part of the L-shaped structure is provided with a guide hole which is through from front to back, and the rear edge of the sliding plate is provided with a guide post which extends backwards and is in sliding fit with the guide hole. The structure is convenient for assembling the sliding plate and improves the stability of the front and back movement of the sliding plate.

Preferably, the rear end of the guide post penetrates through the guide hole and is located behind the vertical part of the L-shaped structure all the time, the end part of the guide post is provided with a limiting block, a spring is sleeved on the periphery of the guide post, the vertical part of the L-shaped structure at the front end of the spring abuts against the limiting block, and the rear end of the spring abuts against the limiting block, so that the sliding plate keeps moving backwards, and the paper passing opening and the paper feeding opening tend to be opened. By adopting the structure, under the closing state of the cover plate, after the pushing part cancels the pressure of the first connecting rod, the sliding plate is in a free state, and at the moment, the sliding plate slides backwards under the elastic force action of the spring so as to open the paper passing opening and the paper feeding opening.

Compared with the prior art, the utility model has the advantages that: the utility model provides a drawer type paper shredder, which can place a plurality of pieces of paper in a drawer at one time, thereby continuously shredding a large amount of waste paper under the condition of saving time and labor and being convenient to use; the protective door assembly can cover the paper inlet in a non-paper shredding state, so that the paper shredding knife is sealed in the body, the safety protection performance is improved, the protective door assembly opens the paper inlet in the paper shredding state, normal paper shredding is realized, and the operation is convenient.

Drawings

FIG. 1 is a schematic view of a shredder according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a partial schematic structural view (non-shredded state) of an embodiment of the present invention;

FIG. 5 is a partial schematic view of the structure of an embodiment of the present invention (shredded paper state);

FIG. 6 is a cross-sectional view of an embodiment of the present invention;

fig. 7 is a schematic view of the cover plate and protective door assembly of fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 7, the present embodiment provides a drawer-type automatic continuous shredder, which is provided with a paper pressing mechanism to maintain the stability and smoothness of continuous paper feeding, and a protective door assembly to improve the safety in a non-shredded state.

The drawer type paper shredder of the embodiment comprises a body 2, a paper shredding knife 3, a paper feeding wheel 4, a paper pressing mechanism 1 and a protective door component 8. The body 2 is provided with a drawer 5 which can be drawn out from the front side of the body 2 and is used for storing waste paper, the front side of the drawer 5 is provided with a handle, the edge of the side part of the drawer 5 is provided with a side coaming, the inner space of the drawer 5 forms a waste paper storage area 51, and the bottom wall of the front part of the drawer 5 is provided with a paper inlet 52. The shredder blade 3 is provided in the body 2 below the drawer 5 and is disposed corresponding to the paper feed opening 52. The paper pressing mechanism 1 is arranged above the drawer 5, the paper feeding wheel 4 is rotatably arranged at the bottom of the drawer 5, the upper part of the paper feeding wheel is exposed at the front edge of the paper feeding port 52, and the paper feeding wheel 4 rotates backwards under the driving of the gear set and the driving motor.

In this embodiment, the paper pressing mechanism 1 includes a front roller shaft 11, a rear roller shaft 12, a pressing plate 13 and an adjusting mechanism 14, the front roller shaft 11 is rotatably disposed above the paper feeding port 52 and is used for limiting the front edge of the waste paper and preventing the front edge of the waste paper from floating upward; the rear roller shaft 12 is rotatably provided on the rear side of the front roller shaft 11 and disposed near the rear edge of the paper feed port 52 for pressing against the used paper to prevent it from receding. The pressing plate 13 is provided above the front roller shaft 11 and the rear roller shaft 12 and is rotatably connected with the front roller shaft 11 and the rear roller shaft 12, and at least a part of the pressing plate 13 is located above the used paper storage area 51 so as to be movable up and down, and is used for adjusting the pressing state of the front roller shaft 11 and the rear roller shaft 12 on the used paper. The adjusting mechanism 14 is connected with the pressing plate 13 and is used for switching the pressing plate 13 between a first state and a second state, and when the pressing plate 13 is in the first state, the front roller shaft 11 and the rear roller shaft 12 are pressed on the waste paper; in the second state of the platen 13, the front roller shaft 11 and the rear roller shaft 12 are not in contact with the used paper.

Specifically, the rear portion of the platen 13 is rotatably supported above the used paper storage area 51, the front roller shaft 11 and the rear roller shaft 12 extend right and left and are arranged in parallel front and rear, and the front edge of the platen 13 is rotatably connected to the end portion of the front roller shaft 11 and the end portion of the rear roller shaft 12 by a rotating arm 131. With the structure, the pressing plate 13 can be driven to turn back and forth by taking the rear edge as a rotating shaft, so that the front roller shaft 11 and the rear roller shaft 12 are driven to move up and down, and the paper pressing state is switched.

The rotating arm 131 extends back and forth, the front end of the rotating arm 131 is rotatably connected with the end of the front roller shaft 11, and the rear end of the rotating arm 131 is rotatably connected with the end of the rear roller shaft 12, so that the heights of the front roller shaft 11 and the rear roller shaft 12 can be automatically adjusted according to different forces. Because under the shredded paper state, preceding roller 11 is only to exerting pressure to the leading edge of waste paper, and back roller 12 is whole to be pressed and is held on waste paper, when waste paper thickness is great, the height of preceding roller 11 may be less than the height of back roller 12, adopt above-mentioned swing joint structure, be favorable to according to waste paper thickness automatic adjustment preceding roller 11 with back roller 12's height, make preceding roller 11 offset with the leading edge of waste paper all the time, back roller 12 compresses tightly on waste paper all the time, thereby can prevent that the leading edge of waste paper from floating all the time, prevent that waste paper is retreating, be favorable to improving the conveying stability of paper.

For the convenience of assembly and connection, the front edge of the pressing plate 13 is provided with a first connecting arm 132 extending downward near the end, the middle of the rotating arm 131 is formed with a second connecting arm 1311 protruding upward, and the first connecting arm 132 and the second connecting arm 1311 are rotatably connected through the matching of a shaft and a hole.

The two sides of the used paper storage area 51 are provided with vertically extending supporting bases 6, the supporting bases 6 are provided with shaft holes 61 arranged corresponding to the pressing plates 13, the side edges of the pressing plates 13 near the rear ends are provided with connecting shafts 133 capable of being rotatably connected with the shaft holes 61, and the connecting positions of the pressing plates 13 and the supporting bases 6 are higher than the connecting positions of the first connecting arms 132 and the second connecting arms 1311, so that the pressing plates 13 are in a state of gradually inclining downwards from back to front. With the above structure, the pressing plate 13, the front roller shaft 11 and the rear roller shaft 12 are kept in a state of pressing and holding the waste paper downward all the time by their own weight, thereby maintaining the paper pressing effect.

The adjusting mechanism 14 includes a limiting seat 141, a limiting block 142 and an elastic member 143, the limiting seat 141 is disposed beside the waste paper storage region 51 and disposed corresponding to the middle edge of the pressing plate 13, the middle of the limiting block 142 is rotatably connected to the limiting seat 141 through a pin 1421, the upper end of the limiting block 142 is located below the pressing plate 13, the elastic member 143 is a spring, the first end of the elastic member 143 is connected to the lower edge of the limiting block 142, the second end of the elastic member is constrained on the shredder in front of the elastic member 143, the upper end of the limiting block 142 is turned forward and separated from the lower wall surface of the pressing plate 13 when the elastic member 143 is in the first stretching state, the upper end of the limiting block 142 is turned backward and is abutted against the lower wall surface of the pressing plate 13, the pressing plate 13 is turned backward and turned to the front roller shaft 11, and the rear roller shaft 12 is floated upward when the elastic member 143 is in the second stretching state. The side wall of the drawer 5 is provided with a projection 53 arranged corresponding to the lower end of the stopper 142, the rear edge of the projection 53 forms a guide part 531 which is gradually inclined downwards from front to back so as to be abutted against the lower end of the stopper 142, and the guide part 531 is in guide fit with the lower end of the stopper 142 to continuously drive the upper end of the stopper 142 to turn forwards in the process that the drawer 5 is pushed into the paper shredder. When the drawer 5 is pulled out from the body, the limiting block 142 loses the pressure of the convex block 53 on the side wall plate of the drawer 5, and under the action of the elastic element 143, the upper end of the limiting block 142 turns upwards and abuts against the bottom of the pressing plate 13, so that the pressing plate 13 turns upwards by taking the rear edge as a rotating shaft, and the front roller shaft 11 and the rear roller shaft 12 are lifted up to facilitate paper feeding; when the drawer 5 is filled with waste paper and pushed into the body, the guide portions 531 at the rear edge of the protrusions 53 gradually turn the upper ends of the stoppers 142 forward, and after the drawer 5 is completely pushed into the body, the upper ends of the stoppers 142 are separated from the lower wall surface of the pressing plate 13, the front roller shaft 11, and the rear roller shaft 12 fall under gravity and press the waste paper, the front roller shaft 11 presses the paper at the front edge of the waste paper, and the rear roller shaft 12 presses the paper at the middle of the waste paper, thereby realizing stable paper feeding.

As shown in fig. 4, the axial length of the front roller shaft 11 and the rear roller shaft 12 of the present embodiment is greater than the width of the drawer 5, and the side coaming of the drawer 5 is provided with a relief opening 54 through which the front roller shaft 11 and the rear roller shaft 12 fall to press and hold the waste paper. Alternatively, as shown in fig. 5, the axial length of the front roller shaft 11 and the rear roller shaft 12 is smaller than the width of the drawer 5, and the front roller shaft 11 and the rear roller shaft 12 are positioned inside the drawer 5 in the shredded state.

The top of the body 2 is provided with a cover plate 7 capable of covering the paper pressing mechanism 1, the rear edge of the cover plate 7 is rotatably connected to the body 2, and the cover plate 7 is provided with a paper feeding port 71 arranged corresponding to the paper feeding port 52. When the number of paper shreds is small, for example, less than three paper shreds, the waste paper can be directly fed from the paper feed port 71 to be shredded without using the drawer 5. The cover plate 7 is opened to inspect and maintain the paper pressing mechanism 1 for simple obstacles.

In a state where the drawer 5 is completely pushed into the body 2, the used paper is placed in the drawer 5 and located at the rear side of the paper feed opening 52, the front portion of the used paper is projected forward to cover a part of the paper feed opening 52, the front edge of the used paper is in contact with the rear side edge of the feed roller 4, the front roller shaft 11 is located above the feed roller 4 and is arranged slightly rearward, and the front roller shaft 11 also keeps the front edge of the used paper in contact with the feed roller 4 in a state where the front edge of the used paper can be pressed, thereby achieving stable conveyance of the used paper.

In this embodiment, the body 2 is provided with a supporting plate 21 capable of dividing the body into an upper cavity and a lower cavity, the drawer 5 is supported above the supporting plate 21, and the protective door assembly 8 is arranged below the supporting plate 21.

Specifically, the protective door assembly 8 has a slide plate 81 provided above the shredder blade 3 and below the drawer 5 and capable of opening or covering the paper feed opening 52. The supporting plate 21 is provided with a paper passing opening 211 arranged corresponding to the paper feeding opening 52, the bottom wall of the supporting plate 21 is provided with a positioning plate 82 arranged close to the rear edge of the paper passing opening 52, the sliding plate 81 can be constrained on the positioning plate 82 in a sliding mode relative to the positioning plate 82, the paper passing opening 211 and the paper feeding opening 52 are covered under the condition that the sliding plate 81 is overlapped with the positioning plate 82, and the paper passing opening 211 and the paper feeding opening 52 are opened under the condition that the sliding plate 81 is staggered with the positioning plate 82. The structure is convenient for opening or covering the paper inlet 52 through the sliding of the sliding plate 81, meets the requirement of paper shredding when opening, and improves the safety when covering.

The positioning plate 82 has an L-shaped cross section, and a transverse portion 821 of the L-shaped cross section and a lower wall surface of the supporting plate 21 form a receiving area 820 for receiving the sliding plate 81. The vertical part 822 of the L-shaped structure is provided with a guide hole which is penetrated in the front and back direction, and the rear edge of the sliding plate 81 is provided with a guide post 811 which extends backwards and is in sliding fit with the guide hole. This structure facilitates the assembly of the sliding plate 81 and improves the stability of the forward and backward movement of the sliding plate 81.

The rear end of the guide post 811 is always positioned behind the vertical part 822 of the L-shaped structure after passing through the guide hole, the end of the guide post 811 is provided with a limit block 810, the outer periphery of the guide post 811 is sleeved with a spring 812, the vertical part 822 of the L-shaped structure at the front end of the spring 812 abuts against, and the rear end of the spring 812 abuts against the limit block 810, so that the sliding plate 81 keeps moving backwards, and the paper passing opening 211 and the paper feeding opening 52 tend to be opened.

The protective door assembly 8 of the present embodiment is provided with a link assembly 83 at a side thereof for driving the sliding plate 81 to slide forward to close the paper inlet 52. The link assembly 83 is connected between the cover plate 7 and the slide plate 81, and in a state where the cover plate 7 is opened, the slide plate 81 covers the paper feed port 52 by being driven by the link assembly 83, and in a state where the cover plate 7 is closed, the slide plate 81 opens the paper feed port 52.

The connecting rod assembly 83 includes a toggle element 831, a positioning sleeve 832, a first connecting rod 833 and a second connecting rod 834, the toggle element 831 is connected to the edge of the side portion of the rear end of the cover plate 7, in a closed state of the cover plate 7, the toggle element 831 is arranged upward, the positioning sleeve 832 is vertically arranged on the body 2 below the cover plate 7 and is provided with a mounting groove 8321 which is through up and down and is opened front and back, the upper portion of the first connecting rod 833 is rotatably connected to the upper portion of the mounting groove 8321 through a pin shaft 8331, the lower portion of the first connecting rod 833 extends out of the opening of the mounting groove 8321 and is rotatably connected with the rear end of the second connecting rod 834, and the front end of the second connecting rod 834 is connected with the sliding plate 81. When the cover plate 7 is opened, the toggle element 831 rotates backward and gradually presses against the front side wall of the first link 833, so that the first link 833 rotates around the pin 8331 to push the second link 834 to move forward, and the slide plate 81 overcomes the elastic force of the spring 812 and slides forward to cover the paper inlet 52; when the cover 7 is closed, the toggle member 831 is vertically arranged to cancel the pressing force on the first link 833, and at this time, the slide plate 81 is returned rearward by the elastic force of the spring 812 to open the paper feed port 52.

In the embodiment, the top wall of the body 2 is provided with a mounting opening 22 for mounting the cover plate 7, and the rear edge of the cover plate 7 is rotatably connected with the rear edge of the mounting opening 22. The end of the rear edge of the cover plate 7 is rotatably connected with the corresponding body 2 through a rotating shaft 23, and a torsion spring 231, preferably 30-45 °, is arranged on the rotating shaft 23 and can keep the cover plate 7 to be 25-120 ° with the top wall of the body 2 in an open state. When the cover plate 7 is at the above-mentioned angle, the paper feed opening 52 can be substantially covered.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims

1. A drawer type paper shredder with a protective structure is characterized in that: including body (2), shredded paper sword (3) and protection door subassembly (8), be provided with drawer (5) that are used for depositing waste paper that can take out from body (2) front side on body (2), paper feed mouth (52) have been seted up on the anterior diapire of drawer (5), shredded paper sword (3) are located in body (2) and are located drawer (5) below, correspond paper feed mouth (52) and arrange, protection door subassembly (8) have locate shredded paper sword (3) top, drawer (5) below and can open slide (81) that or cover paper feed mouth (52), thereby protection door subassembly (8) side is provided with can drive slide (81) and slide forward and with link assembly (83) that paper feed mouth (52) closed.

2. The drawer-type shredder with protective structure as claimed in claim 1, wherein: the paper feeding device is characterized in that a cover plate (7) capable of being opened is arranged at the top of the body (2), the connecting rod assembly (83) is connected between the cover plate (7) and the sliding plate (81), the sliding plate (81) covers the paper feeding port (52) under the driving of the connecting rod assembly (83) under the opening state of the cover plate (7), and the sliding plate (81) opens the paper feeding port (52) under the closing state of the cover plate (7).

3. The drawer-type shredder with protective structure as claimed in claim 2, wherein: link assembly (83) are including stirring piece (831), position sleeve (832), first connecting rod (833) and second connecting rod (834), stir and move piece (831) and connect in the lateral part edge of apron (7) rear end, and under apron (7) closed condition, stir and move piece (831) and arrange up, position sleeve (832) vertical arrangement just has upper and lower through, front and back open-ended mounting groove (8321) on body (2) of apron (7) below, the upper portion of first connecting rod (833) is rotated through round pin axle (8331) and is connected in the upper portion of mounting groove (8321), the lower part of first connecting rod (833) stretches out outside the opening of mounting groove (8321) and the rear end rotation connection of lower extreme and second connecting rod (834), the front end of second connecting rod (834) is connected with slide (81).

4. The drawer-type shredder with protective structure as claimed in claim 2, wherein: an assembly opening (22) for installing the cover plate (7) is formed in the top wall of the body (2), the rear edge of the cover plate (7) is rotatably connected to the rear edge of the assembly opening (22), the end portion of the rear edge of the cover plate (7) is rotatably connected with the corresponding body (2) through a rotating shaft (23), and a torsion spring (231) capable of enabling the cover plate (7) to keep the cover plate (7) and the top wall of the body (2) to form an angle of 25-120 degrees in an opening state is arranged on the rotating shaft (23).

5. The drawer-type shredder with protective structure of claim 1, 2, 3 or 4, wherein: the body (2) is internally provided with a supporting plate (21) used for supporting the drawer (5), the supporting plate (21) is provided with a paper passing opening (211) arranged corresponding to the paper feeding opening (52), a positioning plate (82) arranged close to the paper passing opening (52) is arranged on the bottom wall of the supporting plate (21), the sliding plate (81) can be constrained on the positioning plate (82) in a sliding mode relative to the positioning plate (82), the sliding plate (81) and the positioning plate (82) cover the paper passing opening (211) and the paper feeding opening (52) in an overlapped mode, and the sliding plate (81) and the positioning plate (82) are opened in a staggered mode.

6. The drawer-type shredder with protective structure as claimed in claim 5, wherein: the cross section of the positioning plate (82) is of an L-shaped structure, and an accommodating area (820) for accommodating the sliding plate (81) is formed between the transverse part (821) of the L-shaped structure and the lower wall surface of the supporting plate (21).

7. The drawer-type shredder with protective structure as claimed in claim 6, wherein: a guide hole which is penetrated through from front to back is formed in the vertical part (822) of the L-shaped structure, and a guide post (811) which extends backwards and is in sliding fit with the guide hole is arranged at the rear edge of the sliding plate (81).

8. The drawer-type shredder with protective structure as claimed in claim 7, wherein: the rear end of the guide post (811) penetrates through the guide hole and is located on the rear side of the vertical part (822) of the L-shaped structure all the time, the end part of the guide post (811) is provided with a limiting block (810), a spring (812) is sleeved on the periphery of the guide post (811), the vertical part (822) of the L-shaped structure at the front end of the spring (812) abuts against, and the rear end of the spring (812) abuts against the limiting block (810), so that the sliding plate (81) moves backwards, and the paper passing opening (211) and the paper feeding opening (52) tend to be opened.