CN112619825A - Paper pressing mechanism and drawer type paper shredder with same - Google Patents
Paper pressing mechanism and drawer type paper shredder with same Download PDFInfo
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- CN112619825A CN112619825A CN202011642908.4A CN202011642908A CN112619825A CN 112619825 A CN112619825 A CN 112619825A CN 202011642908 A CN202011642908 A CN 202011642908A CN 112619825 A CN112619825 A CN 112619825A
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- 238000003825 pressing Methods 0.000 title claims abstract description 77
- 239000010893 paper waste Substances 0.000 claims abstract description 88
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/22—Feed or discharge means
- B02C18/2225—Feed means
- B02C18/2283—Feed means using rollers
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention relates to a paper pressing mechanism and a drawer type paper shredder applying the paper pressing mechanism, wherein the paper pressing mechanism comprises a front roll shaft, a rear roll shaft, a pressing plate and an adjusting mechanism, wherein the front roll shaft is rotatably arranged above a paper inlet of the paper shredder and is used for limiting the front edge of waste paper and preventing the front edge of the waste paper from floating upwards; the rear roller shaft is rotatably provided at the rear side of the front roller shaft and disposed near the rear edge of the paper feed opening, and is used for being pressed against the waste paper to prevent the waste paper from retreating. The invention provides a drawer type paper shredder, which can place a plurality of pieces of paper in a drawer at one time, continuously shred a large amount of waste paper under the condition of saving time and labor and is convenient to use; the front edge of the waste paper is pressed and held by the front roller shaft, the front edge of the waste paper is prevented from floating in the paper feeding process, the middle of the waste paper is pressed and held by the rear roller shaft, the waste paper is prevented from retreating in the paper feeding process, the stable and smooth transmission of the paper is realized, the phenomenon that the machine core is blocked due to excessive paper feeding in one time is avoided, and the reliability is good.
Description
Technical Field
The invention relates to the technical field of paper shredders, in particular to a paper pressing mechanism and a drawer type paper shredder with the paper pressing mechanism.
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.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a paper pressing mechanism which can stably and smoothly convey paper and avoid the jam of a cassette mechanism, aiming at the current situation of the prior art.
The second technical problem to be solved by the present invention is to provide a drawer type shredder with the paper pressing mechanism, which can continuously shred a plurality of waste papers to save time and labor, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving at least one technical problem is as follows: a paper pressing mechanism for a paper shredder having a used paper storing area above a paper feed opening, comprising
The front roll shaft can be rotatably arranged above the paper inlet of the paper shredder and is used for limiting the front edge of the waste paper and preventing the front edge of the waste paper from floating upwards;
the rear roll shaft is rotatably arranged at the rear side of the front roll shaft, is arranged close to the rear edge of the paper inlet and is used for pressing and holding the waste paper so as to prevent the waste paper from retreating;
the pressing plate is arranged above the front roller shaft and the rear roller shaft and is rotationally connected with the front roller shaft and the rear roller shaft, and at least part of the pressing plate can move up and down and is positioned above a waste paper storage area of the paper shredder and used for adjusting the pressing state of the front roller shaft and the rear roller shaft on waste paper; and
the upper end of the ejector rod is connected to the edge of the side part of the pressing plate, the lower end of the ejector rod is provided with a roller, the roller is lifted to enable the pressing plate to be switched between a first state and a second state, and the front roll shaft and the rear roll shaft are pressed on the waste paper when the pressing plate is in the first state; when the pressing plate is in the second state, the front roller shaft and the rear roller shaft are not in contact with waste paper.
In the above aspect, the rear portion of the platen is rotatably supported above the used paper storage area, the front roller shaft and the rear roller shaft extend in the left-right direction and are arranged in parallel in the front-rear direction, and the front edge of the platen is rotatably connected to the end portion of the front roller shaft and the end portion of the rear roller shaft through the rotating arm, respectively. By adopting the structure, the press plate can be conveniently driven to turn back and forth by taking the rear edge as a rotating shaft, so that the front roller shaft and the rear roller shaft are driven to move up and down, and the paper pressing state is switched.
Preferably, the rotating arm extends forwards and backwards, the front end of the rotating arm is rotatably connected with the end part of the front roller shaft, and the rear end of the rotating arm is rotatably connected with the end part of the rear roller shaft, so that the heights of the front roller shaft and the rear roller shaft can be automatically adjusted according to different stresses. Because under the shredded paper state, the preceding roller is only to exerting pressure to the front edge of waste paper, and then the whole pressure of roller is held on waste paper, when waste paper thickness is great, the height of preceding roller may be less than the height of back roller, adopt above-mentioned swing joint structure, be favorable to according to the height of roller and back roller before waste paper thickness automatic adjustment, make preceding roller offset with the front edge of waste paper all the time, the back roller compresses tightly on waste paper all the time, thereby can prevent that the front edge of waste paper from floating all the time, prevent that waste paper is retreating, be favorable to improving the conveying stability of paper.
In order to facilitate assembly and connection, a first connecting arm extending downwards is arranged at the position, close to the end, of the front edge of the pressing plate, a second connecting arm is formed in the middle of the rotating arm in a protruding mode, and the first connecting arm and the second connecting arm are connected in a rotating mode through matching of a shaft and the hole.
Preferably, the both sides of waste paper storage area are provided with the supporting seat of vertical extension, and it has the slot hole that corresponds the clamp plate and arrange and extend from top to bottom to open on this supporting seat, the clamp plate is provided with the connecting axle that can rotate to be connected and can slide from top to bottom along the slot hole near the side edge department of rear end with this slot hole, thereby the clamp plate is the state of slope gradually backward forward down from the junction of first linking arm and second linking arm with the supporting seat is higher than in the junction of clamp plate and supporting seat. By adopting the structure, the pressing plate, the front roller shaft and the rear roller shaft are beneficial to always keeping the state of pressing and holding the waste paper downwards through self gravity, thereby keeping the paper pressing effect.
In the invention, the pressing plate is gradually inclined downwards from back to front under the condition that the rollers at the lower end of the ejector rod descend to be close to the bottom wall of the waste paper storage area, and the front roller shaft and the rear roller shaft are pressed and held on the waste paper; the rollers at the lower ends of the push rods rise to be suspended above the waste paper storage area, and the front and the back of the pressing plate tend to be horizontal, so that the front roll shaft and the back roll shaft float upwards.
The drawer type paper shredder with the paper pressing mechanism comprises a body, a paper shredding cutter, a paper feeding wheel and the paper pressing mechanism, wherein the body is provided with a drawer which can be drawn out from the front side of the body and is used for storing waste paper, the inner space of the drawer forms a waste paper storage area, the paper feeding port is formed in the bottom wall of the front portion of the drawer, the paper shredding cutter is arranged in the body and located below the drawer and is arranged corresponding to the paper feeding port, the paper pressing mechanism is arranged above the drawer, and the paper feeding wheel can be rotatably arranged at the bottom of the drawer and the upper portion of the paper feeding wheel is exposed out of the front edge of the paper feeding port. In a state where the drawer is completely pushed into the body, the used paper is placed in the drawer and located on the rear side of the paper feed opening, the front portion of the used paper is projected forward to cover a part of the paper feed opening, the front edge of the used paper is in contact with the rear side edge of the feed roller, the front roller shaft is located above the feed roller and is arranged slightly rearward, and the front roller shaft, in a state where the front edge of the used paper can be pressed, also keeps the front edge of the used paper in contact with the feed roller, thereby realizing stable conveyance of the used paper.
Preferably, the axial length of preceding roller, back roller is greater than the width of drawer, thereby it gives way the mouth to open on the side bounding wall of drawer and supply preceding roller, the whereabouts pressure of back roller to hold waste paper.
Preferably, the axial length of the front roller shaft and the rear roller shaft is smaller than the width of the drawer, and the front roller shaft and the rear roller shaft are located on the inner side of the drawer in a paper shredding state.
In the invention, the roller is matched with the upper edge of the drawer side enclosing plate in a rolling way, the side enclosing plate of the drawer is provided with a guide groove for the roller to descend, the rear edge of the guide groove gradually extends upwards from front to back to form a guide slope, and the upper end of the guide slope is smoothly connected with the upper edge of the drawer side enclosing plate. When the drawer is pulled out of the body, the idler wheels slide to the top edge of the side coaming of the drawer from the guide groove along the guide slope, and the front roller shaft and the rear roller shaft are lifted, so that paper can be added conveniently; in the process of filling waste paper in the drawer and pushing into the body, the roller slides to the guide groove gradually along the top edge of the side enclosing plate of the drawer and the guide slope, after the drawer is pushed into the body completely, the front roller shaft and the rear roller shaft fall along the front side of the pressing plate and are pressed on the waste paper, the front roller shaft presses the paper at the front edge of the waste paper, and the rear roller shaft presses the paper at the middle part of the waste paper, so that stable paper feeding is realized.
Preferably, the top of the body is provided with a cover plate capable of covering the paper pressing mechanism, the rear edge of the cover plate is rotatably connected to the body, and the cover plate is provided with a paper feeding port arranged corresponding to the paper feeding port. When the quantity of the needed paper shredding is small, for example, less than three paper shredding machines, the waste paper can be directly fed from the paper feeding port to shred the paper without adopting a drawer.
Compared with the prior art, the invention has the advantages that: the invention 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 front edge of the waste paper is pressed and held by the front roller shaft of the paper pressing mechanism, so that the front edge of the waste paper is prevented from floating in the paper feeding process, the middle part of the waste paper is pressed and held by the rear roller shaft, the waste paper is prevented from retreating in the paper feeding process, the stable and smooth transmission of the paper is realized, the phenomenon that the machine core is blocked due to excessive paper feeding at one time is avoided, and the reliability is good.
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 (shredded state);
FIG. 3 is a top view of an embodiment of the present invention;
FIG. 4 is a schematic structural view (non-shredded state) of an embodiment of the present invention;
fig. 5 is a partial structural schematic diagram of fig. 4.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 5, 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.
The drawer type paper shredder of the embodiment comprises a body 2, a paper shredding knife 3, a paper feeding wheel 4 and a paper pressing mechanism 1. 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 a push rod 14, the front roller shaft 11 is rotatably disposed above the paper feed 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 upper end of the ejector rod 14 is connected to the edge of the side part of the pressing plate 13, the lower end of the ejector rod is provided with a roller 141, the roller 141 is lifted to enable the pressing plate 13 to be switched between a first state and a second state, and the front roller shaft 11 and the rear roller shaft 12 are pressed on the waste paper when the pressing plate 13 is in the first state; 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 seats 6, the supporting seats 6 are provided with long holes 61 which are arranged corresponding to the pressing plates 13 and extend up and down, the side edges of the pressing plates 13 near the rear ends are provided with connecting shafts 133 which can be rotatably connected with the long holes 61 and can slide up and down along the long holes 61, and the joints of the pressing plates 13 and the supporting seats 6 are higher than the joints 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.
When the roller 141 at the lower end of the ejector rod 14 descends to a state close to the bottom wall of the waste paper storage area 51, the pressing plate 13 gradually inclines downwards from back to front, and the front roller shaft 11 and the rear roller shaft 12 are pressed on the waste paper; when the rollers 141 at the lower ends of the lift pins 14 are lifted above the used paper storage area 51, the platen 13 is horizontally moved forward and backward to float the front roller shaft 11 and the rear roller shaft 12 upward. The roller 141 of the embodiment is in rolling fit with the upper edge of the side enclosing plate 50 of the drawer 5, the side enclosing plate 50 of the drawer 5 is provided with a guide groove 55 for the roller 141 to descend, the rear edge of the guide groove 55 extends upwards from front to back gradually to form a guide slope 551, and the upper end of the guide slope 551 is smoothly connected with the upper edge of the side enclosing plate 50 of the drawer 5. When the drawer 5 is pulled out from the body 2, the roller 141 slides from the guide groove 55 to the top edge of the drawer side enclosing plate 50 along the guide slope 551, so that the front roller shaft 11 and the rear roller shaft 12 are lifted, and paper feeding is facilitated; in the process of loading the waste paper in the drawer 5 and pushing it into the body 2, the rollers 141 slide gradually along the top edge of the drawer-side enclosing plate 50, the guide slope 551 into the guide groove 55, and after the drawer 5 is completely pushed into the body 2, the front roller shaft 11, the rear roller shaft 12 fall with the front side of the pressing plate 13 and press against 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 achieving stable paper feeding.
The axial length of the front roller shaft 11 and the rear roller shaft 12 of the embodiment is larger than the width of the drawer 5, and the side coaming of the drawer 5 is provided with a yielding opening 54 for the front roller shaft 11 and the rear roller shaft 12 to fall down so as to press and hold waste paper.
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.
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 invention, 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 (10)
1. A platen mechanism for use in a shredder having a waste storage area (51) located above a feed opening (52), characterized by: comprises that
The front roll shaft (11) is rotatably arranged above a paper inlet (52) of the paper shredder and is used for limiting the front edge of the waste paper and preventing the front edge of the waste paper from floating upwards;
a rear roller shaft (12) 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 and holding the waste paper to prevent it from moving backward;
the pressing plate (13) is arranged above the front roller shaft (11) and the rear roller shaft (12) and is rotationally connected with the front roller shaft (11) and the rear roller shaft (12), and at least part of the pressing plate (13) can move up and down and is positioned above a waste paper storage area (51) of the paper shredder and used for adjusting the pressing state of the front roller shaft (11) and the rear roller shaft (12) on waste paper; and
the upper end of the ejector rod is connected to the edge of the side part of the pressing plate, the lower end of the ejector rod is provided with a roller, the roller is lifted to enable the pressing plate (13) to be switched between a first state and a second state, and the front roll shaft (11) and the rear roll shaft (12) are pressed on the waste paper when the pressing plate (13) is in the first state; when the pressing plate (13) is in the second state, the front roller shaft (11) and the rear roller shaft (12) are not in contact with waste paper.
2. The platen mechanism of claim 1, wherein: the rear part of the pressing plate (13) is rotatably supported above the waste paper storage area (51), the front roller shaft (11) and the rear roller shaft (12) extend left and right and are arranged in parallel front and back, and the front edge of the pressing plate (13) is rotatably connected with the end part of the front roller shaft (11) and the end part of the rear roller shaft (12) through a rotating arm (131).
3. The platen mechanism of claim 2, wherein: the rotating arm (131) extends forwards and backwards, the front end of the rotating arm (131) is rotatably connected with the end part of the front roller shaft (11), and the rear end of the rotating arm (131) is rotatably connected with the end part of the rear roller shaft (12), so that the height of the front roller shaft (11) and the height of the rear roller shaft (12) can be automatically adjusted according to different stress.
4. The platen mechanism of claim 3, wherein: the front edge of the pressure plate (13) is provided with a first connecting arm (132) extending downwards at a position close to the end part, the middle part of the rotating arm (131) is upwards bulged to form a second connecting arm (1311), and the first connecting arm (132) and the second connecting arm (1311) are rotatably connected through matching of a shaft and a hole.
5. The platen mechanism of claim 4, wherein: the both sides of waste paper storage area (51) are provided with vertical extension's supporting seat (6), and it has slot hole (61) that correspond clamp plate (13) to arrange and extend from top to bottom to open on this supporting seat (6), clamp plate (13) are provided with in the side edge department that is close to the rear end and can rotate with this slot hole (61) and be connected and can follow the connecting axle (133) that the slot hole slided from top to bottom, thereby the junction of clamp plate (13) and supporting seat (6) is higher than the junction of first linking arm (132) and second linking arm (1311) and makes clamp plate (13) be the trend of downward sloping forward gradually from the back.
6. A platen mechanism according to any one of claims 2 to 5 wherein: when the rollers at the lower ends of the ejector rods descend to be close to the bottom wall of the waste paper storage area (51), the pressing plates gradually incline downwards from back to front, and the front roll shafts (11) and the rear roll shafts (12) are pressed on the waste paper; the rollers at the lower ends of the push rods rise to be suspended above the waste paper storage area (51), and the front and the back of the pressing plate tend to be horizontal, so that the front roller shaft (11) and the back roller shaft (12) float upwards.
7. A drawer-type paper shredder with the paper pressing mechanism of claim 6, wherein: including body (2), shredded paper sword (3), feed roller (4) and nipper (1), be provided with drawer (5) that are used for depositing waste paper that can take out from body (2) front side on body (2), the inner space of this drawer (5) constitutes waste paper storage area (51), paper feed mouth (52) are seted up on the diapire of drawer (5) front portion, shredded paper sword (3) are located body (2) and are located drawer (5) below, correspond paper feed mouth (52) and arrange, nipper (1) is located the top of drawer (5), feed roller (4) can be located drawer (5) bottom and upper portion and expose in the front edge department of paper feed mouth (52) with rotating.
8. The drawer shredder according to claim 7, wherein: the axial lengths of the front roller shaft (11) and the rear roller shaft (12) are greater than the width of the drawer (5), and a yielding opening (54) for enabling the front roller shaft (11) and the rear roller shaft (12) to fall down so as to press and hold waste paper is formed in a side enclosing plate of the drawer (5); or the axial lengths of the front roller shaft (11) and the rear roller shaft (12) are smaller than the width of the drawer (5), and the front roller shaft (11) and the rear roller shaft (12) are located on the inner side of the drawer (5) in a paper shredding state.
9. The drawer shredder according to claim 7, wherein: the idler wheel is matched with the upper edge of the drawer side enclosing plate in a rolling mode, a guide groove for the idler wheel to descend is formed in the side enclosing plate of the drawer (5), the rear edge of the guide groove extends upwards gradually from front to back to form a guide slope, and the upper end of the guide slope is connected with the upper edge of the drawer side enclosing plate in a smooth mode.
10. The drawer shredder according to claim 7, wherein: the top of the body (2) is provided with a cover plate (7) capable of covering the paper pressing mechanism (1), and the cover plate (7) is provided with a paper feeding port (71) arranged corresponding to the paper feeding port (52).
Priority Applications (1)
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