KR101643743B1 - An automobile equipped with a shredder - Google Patents

An automobile equipped with a shredder Download PDF

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Publication number
KR101643743B1
KR101643743B1 KR1020150031097A KR20150031097A KR101643743B1 KR 101643743 B1 KR101643743 B1 KR 101643743B1 KR 1020150031097 A KR1020150031097 A KR 1020150031097A KR 20150031097 A KR20150031097 A KR 20150031097A KR 101643743 B1 KR101643743 B1 KR 101643743B1
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KR
South Korea
Prior art keywords
crushing
blade
blades
shredding
drum
Prior art date
Application number
KR1020150031097A
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Korean (ko)
Inventor
이정재
Original Assignee
주식회사 에코쉬레드
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Priority to KR1020150031097A priority Critical patent/KR101643743B1/en
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Publication of KR101643743B1 publication Critical patent/KR101643743B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • 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
    • B02C18/18—Knives; Mountings thereof
    • B02C2018/18—

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The present invention relates to a vehicle equipped with a shredder and, more specifically, to a vehicle equipped with a shredder to shred an electronic record media such as a CD-ROM, a DVD-ROM, a flash memory, a hard disk, and the like, wherein a security document such as a restricted document and a document in which personal information is recorded, or content of the security document are recorded. According to the present invention, the vehicle equipped with the shredder includes: a shredding device unit shredding a subject; a shredding chamber in which the shredding device unit is placed; and a loading chamber in which a shredded object shredded in the shredding chamber is loaded. The shredding device unit includes: a first fixing blade unit including multiple first shredding blades arranged in one direction in a row, and multiple first fixing bolts individually connecting the first shredding blades to a support which is fixed; and a rotary blade unit including a cylindrical drum, a support unit installed on the drum, and multiple second fixing bolts individually connecting multiple second shredding blades to the support unit. As the drum rotates, the multiple second shredding blades shred the object while passing through a groove unit of an uneven part formed by the multiple first shredding blades, in accordance with the rotation of the drum.

Description

An automobile equipped with a shredder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document shredding vehicle, and more particularly to a document shredding vehicle, such as a CD-ROM, a DVD-ROM, a flash memory, a hard disk, etc. And a crusher for crushing the electronic recording medium of the document.

Many documents handled by general companies or government offices have many security documents that should not be disclosed to the outside world. These security documents usually have a fixed retention period according to their security level, and documents with expired retention period are discarded according to a predetermined procedure.

Many companies and government offices have their own shredders (three seasons) in the office to perform shredding of security documents. However, when a document with a long storage period expires, it is difficult to shred it with its own manpower or equipment. Often asking for services to an outside company that specializes in the service.

Secure document shredding companies used shredding machines to carry out document shredding at the client's site or shredding security documents at separate sites.

Korean Patent No. 10-1279294 discloses an example of a document shredding vehicle that is used by professional security document shredding companies in the past. The Korean Patent Registration No. 10-1279294 discloses a document shredding vehicle that is equipped with a shredder mounted on a vehicle for shredding a document, Wherein the crusher is provided with an inlet through which a document to be crushed is inserted and a discharge port from which a crushed paper chip is discharged and a second guide member for guiding a document to be crushed is installed inside the inlet, A pair of drive shafts disposed on one side of the second guide member and having a moving plate member, a pair of driving shafts disposed parallel to the lower portion of the loading port of the main body case and driven by the motor, And the other end thereof is movable along the guide groove formed on one side of the drive shaft And a plurality of cutter blades that are axially coupled to the pair of drive shafts so as to be engaged with each other and a plurality of cutter blades And a guiding portion provided at a groove portion of the plate member and having an inclined surface formed at an upper portion thereof so that the document can be guided to the cutter blade; A conveying device having a power device for rotating the screw and a discharge port formed on the other side, and a conveying device connected to the discharge port of the conveying device for conveying the shredded document to the stacker, &Quot; discloses a structure made up of a stacker for stacking a plurality of substrates.

As another example, Korean Patent Laid-Open Publication No. 10-2014-0143004 discloses a system in which a first unit including a pair of first drums on both sides between a truck cap and a loading box, and a second unit on the lower side of the first unit, A second unit including two drums; a third unit for conveying paper sheets that have been lowered by interconnecting the lower side of the second unit and the stacker; and a third unit for conveying the paper sheets in a stacked state, And a fourth unit for flattening the paper sheets piled on the document stack.

Such a conventional document shredding vehicle has a problem that the shredded document chips that have passed through the rotary blades are directly discharged by a method of shredding a document using a pair of rotary blades. That is, there is a problem in that the security document shredding may not be completed because the document which has not been completely cut off is discharged immediately without having a chance to cut through the rotary blade again.

In addition, the conventional crusher used in the document crushing vehicle has a problem in that the maintenance cost is high because the rotary blade unit needs to be replaced when the rotary blade is damaged due to long use.

KR 10-1279294 B1 KR 10-2014-0143004 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a document shredding vehicle capable of preventing incomplete shredding of a security document to improve security.

It is another object of the present invention to provide a document shredding vehicle which can easily maintain the document shredding vehicle and can reduce the cost accordingly.

According to an aspect of the present invention, there is provided a document crushing vehicle comprising a crusher for crushing an object, a crusher for placing the crusher and a crusher for crushing the crusher in the crusher, A first fixed blade including a plurality of first shredding blades arranged in a row in one direction and a plurality of first fixing bolts for respectively fastening the first shredding blades to a position fixed position; And a plurality of second fixing bolts for fastening the plurality of second crushing blades to the support portion, respectively, wherein the plurality of second crushing blades are provided with the plurality And the object is crushed by passing through the groove portion of the concavo-convex formed by the first crushing blades of the first crushing blade.

The crusher bend includes a plurality of third crushing blades arranged in one direction and a second fixed blade portion including a plurality of third fixing blades for respectively fastening the third crushing blade to a support portion fixed in position .

In addition, the crusher bend portion may further include a screen for filtering the crushed material to a predetermined size or less.

The plurality of second crushing blades are disposed so as to form a crushing blade row together with adjacent second crushing blades, and the crushing blade row has a second crushing blade at the center thereof located at the rear end with respect to the rotating direction of the drum, Like shape so as to be positioned forward with respect to the rotational direction of the drum toward the adjacent second crushing blade.

The plurality of second crushing blades forming the crushing blade heat are arranged at different positions on the circumference of the drum about the rotational axis of the drum.

The plurality of first fixing bolts and the plurality of third fixing bolts are fastened such that their head portions face openings into which a document is inserted.

By using the document shredding vehicle according to the present invention, incomplete shredding can be prevented and security can be improved since the security document is continuously shredded until it is crushed into a document chip having a predetermined size or less.

Further, in the document crushing vehicle according to the present invention, since the first fixed blade portion, the second fixed blade portion and the plurality of crushing blades fastened to the rotating blade portion are individually fastened, the position of the crushing blade can be easily changed or replaced, It is possible to reduce the maintenance cost.

Further, the fixing bolt for fastening the respective shredding blades is located in the opening portion into which the document is inserted, so that the maintenance work can be facilitated.

In addition, the crushing blade formed by the crushing blades attached to the rotating blades has a V shape, so that the security document, which is the crushing object, does not move to one side, thereby reducing the possibility of malfunction or malfunction.

Further, the shredding blades attached to the rotary blades are attached at different positions in the circumferential direction about the rotary shaft, so that the workload due to shredding can be dispersed.

1 is a view showing a document shredding vehicle according to a preferred embodiment of the present invention;
2 is a cross-sectional view showing a crusher bend of a document crushing vehicle according to a preferred embodiment of the present invention;
Fig. 3 is a plan view showing the first fixed blade and the rotating blade in the crusher of Fig.
4 is an exploded perspective view showing the fastening structure of the crushing blade and the fixing bolt
5 is a plan view showing the outer peripheral surface of the rotary blade portion,
Fig. 6 is a schematic view showing an angle formed by each of the crushing blades with respect to the rotation center in the rotary blade fringing blade row,
Fig. 7 is a plan view showing the second fixed blade portion and the rotary blade portion in the crusher of Fig.

Hereinafter, a document shredding vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the document shredding vehicle 100 of the present invention is made of a truck of the form of a top-wheel. The document shredding vehicle 100 includes a cabin 110 in which a normal operation means is configured so that a driving operation can be performed during a movement, and a container 120 forming a large space behind the cabin. The container 120 has an appropriate size to fit the vehicle type and the tonnage. If the tonnage is large, it is preferable that the capacity of the container 120 is made large accordingly.

The interior of the container 120 is partitioned by the partition 121. A section adjacent to the cabin 110 constitutes a crushing chamber 122 for carrying out a document crushing operation and another section located at the rear of the vehicle 100 serves as a space for loading a crushed document chip Thereby forming a loading chamber 123. Meanwhile, the document shred vehicle 100 of the present invention can be used not only as a security document in which personal information, confidentiality, etc. are recorded but also as a CD-ROM, a DVD-ROM, a flash memory, a hard disk, In addition to an electronic recording medium or such a security document or an electronic recording medium, it may be used for the purpose of crushing objects of various shapes and materials desired by the user. Hereinafter, these are collectively referred to as " security documents ".

Inside the crushing chamber 122, a charging unit 131 for inputting the security document to be broken and a guide 132 for guiding the inserted security document downward are formed. Below the guide 132, a crusher bumper 200 for crushing the security document is constructed. The guide 132 guides the inserted security document toward the crusher 200. The crusher bend unit 200 trims the inserted security document into a predetermined size and discharges it. Hereinafter, a security document that is discharged by heating is referred to as a document chip.

A pressing mechanism 140 for pushing the security document to be shredded toward the shredder device 200 is formed in front of the shredder device 200. The pressing mechanism 140 includes a pressing plate 141 for pushing the security documents and a pressing driving unit 142 for moving the pressing plate 141 using a power unit such as a hydraulic cylinder.

Below the crusher bobbin 200, a conveying mechanism 150 for sending the crushed document chip to the loading chamber 123 is constructed. The conveying mechanism unit 150 includes a conveying screw 151 having a blade that rotates while moving away from the central rotating shaft in one direction and a driving motor 152 for rotating the conveying screw. When the shredded document chip is piled around the conveying screw 151, the driving motor 152 operates and discharges it toward the loading chamber 123.

Hereinafter, the crusher apparatus 200 will be described in more detail with reference to FIGS. 2 and 3. FIG.

The crusher bend unit 200 includes first and second fixed blade units 210 and 220 mechanically fixed in the crushing chamber 122 and a rotary blade unit 230 having a plurality of crushing blades and a central axis as a rotation axis, ). A drive motor 240 for applying a rotational force to the rotary blade 230 is provided at one side of the rotary blade 230. Referring to FIG. 3, the first fixed blade 210 includes a plurality of shredding blades 250 arranged in the transverse direction while facing the rotary blade 230. Referring to FIG. 4, the shredding blade 250 has a hexagonal shape having a square top surface and a tip portion 251 having four corners protruding in the height direction. This allows the tip 251 to contact the object to be crushed first at the time of crushing the security document so that the object crushing can be started with a strong pressure. The object to be crushed is continuously crushed along both side edges 252 and 253 starting from the tip 251 and leading from the tip 251. [ A coupling hole 254 having a female screw is formed at the center of the shredding blade 250 and is fixed to a support table 211 supporting the blade by a separate fixing bolt 260. Since the distal end portions 251 of the four corners of the shredding blade 250 are all sharpened, when one of the distal end portions 251 is worn or damaged due to long use, the other distal end portion 251 can be rotated and used have. In addition, since the plurality of shredding blades 250 are individually coupled, it is also possible to selectively replace only the shredding blades 250 having a shortened service life. Therefore, the maintenance can be easily performed and the cost can be reduced accordingly. The shredding blades 250 are preferably made of tool steel with good abrasion resistance.

The rotary blade 230 is formed in a shape in which a plurality of shredding blades 250 are attached on the outer circumferential surface of the cylindrical drum 231. 3, the drum 231 has a shape in which the mountain 231a and the valley 231b are continuously and alternately repeated in the axial direction, and the shredding blade 250 has a shape in which one of the tip portions 251 (231b), and the opposite end (251) is laid out so as to be attached to the outside. A support portion 232 for supporting the shredding blade 250 is formed on the trough 231a. The shredding blade 250 is fastened to the support portion 232 by a separate fixing bolt 260. 2, in the first fixed blade 210, the head of the fixing bolt 260 is located on the side of the shredding blade 250 so that the fixing bolt 260 is fastened in the direction of the support blade 211 from the shredding blade 250, In the blade part 230, the head of the fixing bolt 260 is positioned on the support part 232 side so that the fixing bolt 260 is fastened in the direction of the shredding blade 250 from the supporting part 232 side. This takes into consideration the ease of replacement of the tip 251 of the shredding blade 250 and the replacement of the shredding blade 250 and the workability of the shredding operation. In other words, the fixing bolt 260 is fixed from the side of the shredding blade 250 to the support table 211 (see FIG. 2) so that the operator can easily work in the open space where the security document is inserted during the maintenance work of the shredding blade 250 of the first fixed blade 210. And the rotary blade 230 is fixed to the support portion 232 in order to make the shredding blade 250 and the shredding object come in contact with each other without interference of the fixing bolts 260 when the security document is broken. ) In the direction of the shredding blade (250).

3, each of the plurality of shredding blades 250 fastened to the first fixed blade part 210 has a concave and a convex shape toward the rotary blade part 230, The respective tip ends 251 of the shredding blades 250 of the shaft 230 are engaged with each other. Referring to FIGS. 5 and 6 together, the shredding blades 250 fastened to the rotary blade 230 are adjacent to each other to form several shredding blades 250 r . It is preferable that the number of shredding blades (250 r ) is 3 to 5. However, it may be more or less depending on the kind of the object to be crushed, the size of the drum 231, the crushing condition of the drum 231, and the like.

One of the shredding blades 250 r is located at the rear end of the swash plate 250 r in the rotational direction w and the adjacent shredding blades 250 are sequentially positioned in front of the shredding blades 250 r in an alphabet V . Therefore, in the crushing process, crushing is performed from the outermost side of the crushing blade heat (250 r ), and the crushing is gradually performed to the center. More specifically, the crushing blade 250 located at the center in the crushing blade heat 250 r is referred to as a first crushing blade 250 r 1, and the crushing blades 250 positioned on the right and left sides thereof are alternately The second crushing blade 250 r2 , the third crushing blade 250 r3 , the fourth crushing blade 250 r4 , the fifth crushing blade 250 r5 , ... , The n-1 crushing blade 250 rn-1 , and the n - th crushing blade 250 rn , the positions of the crushing blades are set such that the n-th crushing blade 250 rn rotates in the rotating direction 1, the n- 1th crushing blade 250 rn-1 , ..., ... The fifth crushing blade 250 r5 , the fourth crushing blade 250 r4 , the third crushing blade 250 r3 , the second crushing blade 250 r2 and the first crushing blade 250 r1 Located. Therefore, the crushing operation is carried out in the order of arrangement of such crushing blades. The crushing operation is progressed from the both sides of the rotary blade 230 in the middle order so that the crushing object is gathered to the center of the rotary blade 230 while the crushing is proceeding so that the crusher 200 is broken or malfunction . If the shredding blades are arranged in the order of rearward from one side of the rotary blade 230 to the opposite side, as the shredding object progresses to the shredding operation, the shredding blades are concentrated on one side and the load is concentrated on only one side, It is likely to occur. Further, as shown in FIG. 6, it is preferable that the second crushing blade 250 r2 and the third crushing blade 250 r3 are also shifted without being in the same position with respect to the center of rotation, thereby dispersing the load applied at the crushing operation . 6 shows that the third crushing blade 250 r3 is located in front of the second crushing blade 250 r2 but the third crushing blade 250 r3 is located behind the second crushing blade 250 r2 have. The same is true for the fourth crushing blade 250 r4 and the fifth crushing blade 250 r5 , and the same applies to the other crushing blades. That is, all the crushing blades are arranged at different positions in the circumferential direction with respect to the rotational center of the drum 231. [

Referring to FIGS. 2 and 7, the second fixed blade 220 is fixed on the upper portion of the crusher 200. Like the first fixed blade part 210, the second fixed blade part 220 also has a plurality of shredding blades 250 arranged in a row in a row and the tip part 251 thereof is protruded toward the rotary blade part 230, And the adjacent tip ends 251 of the shredding blades 250 of the rotary blade 230 are engaged with the grooves of the adjacent blade shredding blades 250 to be crushed. However, in the case of the second fixed blade 220, there is a difference in that the fixing bolt 260 for fastening the shredding blade 250 is fastened in the direction of the shredding blade 250 from the support 221 side ). This is because, in the maintenance work of the shredding blade 250, as described above, the operator can dispose the fixing bolt 260 in an open space into which the security document is inserted, So that it is prevented from being disturbed.

Since the shredding blades 250 are separately coupled to each other in the rotary blade 230 or the second fixed blade 220, it is easy to selectively rotate or replace only the worn blades 250.

2 is a cross-sectional view of the first and second fixed blade portions 210 and 220 and the rotary blade portion 230 taken at different positions. That is, the positions of the first fixed blade portion 210 and the rotary blade portion 230 are cut along the line aa and bb in FIG. 3, and the second fixed blade portion 220 is cut along the line cc in FIG. Fig.

Below the rotary blade portion 230, a screen 270 for selectively discharging the shredded document chips according to their sizes is formed. A plurality of holes 271 having a predetermined size are formed on the screen 270 so that only the document chips of a predetermined size or less are discharged to the transport mechanism part 150.

Hereinafter, the secure document destruction process in the document shattering vehicle 100 will be described. When the operator inserts the security document to be shredded into the input unit 131, the security document is guided to the shredder apparatus 200 by the guide 132. A pressing plate 141 is provided in front of the crusher bend unit 200 to push the security document toward the crusher bend unit 200. In the crusher device 200, the rotary blade 230 continuously rotates and intersects with the first fixed blade 210, and is interrupted between the rotary blade 230 and the shredding blades 250 of the first fixed blade 210 The entered secure document is ejected through the screen 270 in the form of a shredded document chip. The discharged document chip is discharged to the loading chamber 123 by the operation of the feed mechanism unit 150. [ The large size document chips that have not passed through the screen 270 are lifted up again by the shredding blades 250 of the rotary blade 230 and then secondarily crushed again at the second fixed blade 220. This continuous shredding continues until the size of the document chip is small enough to pass through the screen 270.

By using the document shredding vehicle 100 according to the present invention, incomplete shredding can be prevented and security can be improved because the continuous shredding is performed until the security document is crushed into a document chip having a predetermined size or less.

In the document shredding vehicle according to the present invention, since the first fixed blade portion 210, the second fixed blade portion 220, and the plurality of shredding blades 250 fastened to the rotary blade portion 230 are individually fastened The position of the shredding blade 250 can be changed or replaced easily, and the cost for maintenance can be reduced.

Further, the fixing bolt for fastening the respective shredding blades is located in the opening portion into which the document is inserted, so that the maintenance work can be facilitated.

In addition, the crush blade edge 250r formed by the crush blades 250 attached to the rotary blade 230 has a V shape, so that the security document as the crush object is not pushed to one side, thereby reducing the possibility of malfunction or malfunction.

Further, the shredding blades 250 attached to the rotary blade 230 are attached at different positions in the circumferential direction about the rotation axis, so that the workload due to shredding can be dispersed.

As described above, the document shredding vehicle of the present invention can be utilized for enhancing the security of personal information protection and secret document management.

It can also be utilized to enhance the convenience of repair and maintenance of the document shredding vehicle.

100: Document shredding vehicle
110: cabin
120: Container
131:
132: Guide
140:
150:
200: Crusher bending
210: first fixed blade
220: second fixed blade
230:
240: drive motor
250: Crushing blade
260: Fixing bolt
270: Screen

Claims (7)

A crusher for crushing the object,
A crushing chamber in which the crusher bend portion is placed, and a loading chamber for loading the crushed crushed material in the crushing chamber,
Wherein the crusher bend includes a first fixed blade including a plurality of first crushing blades arranged in one direction and a plurality of first fixing bolts for fastening the first crushing blades to a support having fixed positions, A rotating blade portion including a drum, a support portion provided on the drum, and a plurality of second fixing bolts for fastening the plurality of second shredding blades to the support portion, and a screen for filtering the shredded material to discharge only a predetermined size or less ,
Wherein the plurality of second crushing blades form a crushing blade row together with adjacent second crushing blades, the plurality of second crushing blade blades forming the crushing blade row are disposed at different positions on a circumference with respect to a rotation axis of the drum,
Wherein the plurality of second crushing blades break the object while passing through the concave and convex portions formed by the plurality of first crushing blades according to the rotation of the drum. A crusher for crushing the object,
A crushing chamber in which the crusher bend portion is placed, and a loading chamber for loading the crushed crushed material in the crushing chamber,
The crusher bend includes a first fixed blade including a plurality of first crushing blades arranged in one direction and a plurality of first fixing bolts for fastening the first crushing blade to a first support having a fixed position, A rotating blade portion including a cylindrical drum, a support portion provided on the drum, and a plurality of second fixing bolts for respectively fastening the plurality of second shredding blades to the support portion; and a plurality of third shredding And a second fixed blade unit including a plurality of third fixing bolts for fastening the blade and the third shredding blade to a second support member fixed in position,
Wherein the plurality of second crushing blades are arranged in the circumferential direction of the drums so that the plurality of second crushing blades are rotatably supported by the plurality of third crushing blades, vehicle. The document shredding machine according to claim 2, wherein the crusher bend further comprises a screen for screening the crushed material to discharge only a predetermined size or less, The method according to claim 3, wherein the plurality of second crushing blades are disposed so as to form a crushing blade row together with adjacent second crushing blades,
The crushing blade has a V-shape such that the second crushing blade at the center thereof is positioned at the rear end with respect to the rotational direction of the drum and is positioned forward with respect to the rotational direction of the drum toward the adjacent both second crushing blades Document shredding vehicle 5. The method of claim 4,
And the plurality of second crushing blades forming the crushing blade heat are arranged at different positions on the circumference of the drum about the rotational axis of the drum. 3. The method of claim 2,
The plurality of first fixing bolts and the plurality of third fixing bolts are fixed to each other so that the head of the first fixing bolt and the plurality of third fixing bolts are coupled to each other, A first fixed blade including a plurality of first shredding blades arranged in rows in one direction and a plurality of first fixing blades for respectively fastening the first shredding blades to a supporter fixed in position,
And a rotary blade portion including a cylindrical drum, a support portion provided on the drum, and a plurality of second fixing bolts for fastening the plurality of second shredding blades to the support portion,
The plurality of second crushing blades together with adjacent second crushing blades form a crushing blade heat,
The crushing blade heat is arranged such that the second crushing blade at the center thereof is positioned at the rear end with respect to the rotational direction of the drum and is positioned in front of the drum in the rotational direction of the drum toward the adjacent second crushing blade And,
Wherein the plurality of second crushing blades break the object while passing through the concave and convex portions formed by the plurality of first crushing blades according to the rotation of the drum.
KR1020150031097A 2015-03-05 2015-03-05 An automobile equipped with a shredder KR101643743B1 (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200087586A (en) * 2019-01-11 2020-07-21 광림 컴팩 주식회사 Waste paper shredder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070036326A (en) * 2005-09-29 2007-04-03 주식회사 에스텍시스템 Movable crusher for document
KR101279294B1 (en) 2012-10-04 2013-07-05 김영숙 Crushers equipped vehicles
KR20140143004A (en) 2013-06-05 2014-12-15 박이용 Paper shredding apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070036326A (en) * 2005-09-29 2007-04-03 주식회사 에스텍시스템 Movable crusher for document
KR101279294B1 (en) 2012-10-04 2013-07-05 김영숙 Crushers equipped vehicles
KR20140143004A (en) 2013-06-05 2014-12-15 박이용 Paper shredding apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200087586A (en) * 2019-01-11 2020-07-21 광림 컴팩 주식회사 Waste paper shredder
KR102168716B1 (en) * 2019-01-11 2020-10-21 광림 컴팩 주식회사 Waste paper shredder

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