WO2014036820A1 - Paper shredding mechanism with adjustable cutter positioning device - Google Patents

Description

Technical collar

 BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a shredder mechanism with an adjustable cutter positioning device, and more particularly to a spiral cutter shredder mechanism with a fixed cutter positioning adjustable by a double-layer shredding mechanism of a shredder. The positioning and connection assembly of such a shredder mechanism is also described. In recent years, shredders have become more and more widely used in ordinary office spaces as an indispensable instrument for properly handling documents. The shredder mechanism of the shredder is the main component of the cut paper, and its structural function is critical to the overall performance of the shredder.

 At present, the granulating paper shredder with two pulverizing methods for shredding is generally composed of a two-layer structure: the first layer is a vertical shredder mechanism, including a pair of side-by-side mounted on the tool holder and driven in opposite directions. A rotating strip knife that cuts the paper into vertical strips. The second layer is a transverse shredder mechanism, comprising a cutter set consisting of a rotary spiral cutter shaft and a fixed cutter, the spiral cutter cutter shaft abuts against the fixed cutter and rotates relative thereto, so as to further cut the paper strip laterally into Granular shredded paper.

 Generally, the transverse shredder mechanism is disposed below or behind the vertical shredder mechanism, and the two are assembled together in a certain way to complete the shredder work. Due to the structural design and other reasons, the traditional two-pulverized structure shredder mechanism has defects in the assembly structure of the fixed cutter and the spiral cutter shaft in the transverse shredder mechanism, and the following defects exist in actual use:

 1. The existing horizontal shredder mechanism is often provided with independent double brackets or double vertical plates to fix the spiral cutter shaft. A pair of brackets or a pair of vertical plates are connected by a plurality of tie rods to support and position the spiral cutter shaft, and stabilize Poor sex;

 2. In the existing transverse shredder mechanism, the cutting edge between the fixed cutter and the spiral cutting blade must meet the strict cutting clearance (generally 0--0.1 leg) to ensure the quality of the crushing. During the assembly process, manufacturing errors and assembly errors caused by machining and installation of the relevant parts of the cutting gap are unavoidable. Since the adjustment and deformation prevention measures are not considered in the design, it is difficult to ensure the machining accuracy and assembly. Mass production, product manufacturing difficulty and high production costs, from Πΐί

3. The existing transverse shredder mechanism, the fixed cutter is generally fixed by its opposite ends, and the fixing method enables the fixed cutter to form a fixed beam structure at both ends. However, the structure cannot adjust the gap of the tool. If the precision of the fixed cutter is not enough, the gap between the groups will be uneven. When the shredder breaks the paper for a long time, if the cutting edge of the cutter wears, or the fixed cutter is displaced, the cutting room will be made. When the gap is large, the quality of the pulverization is degraded. Even if a new tool is replaced, the cutting gap is not easily ensured due to the tooling error, and it is difficult to achieve the technical performance index of the original design of the product.

 4. The existing transverse shredder mechanism, in the process of shredding, the fixed beam structure of the fixed cutter will cause the bending moment and deflection of the middle part of the tool to be the largest, and the middle of the λ is decreasing toward the both ends, because there is no design to prevent the deformation of the tool. Technical measures, if the thickness of the paper to be shredded is too thick, the paper will enter the cutting gap between the cutter sets, and the cutting edge will be opened outwards to cause the knife to break. The above situation will cause the paper shredder to lose its function and make the shredded paper. The machine does not work properly.

Summary of the invention

 In view of the above reasons, an object of the present invention is to provide a paper shredding mechanism with stable performance, the positioning platform can reduce the bending moment and the deflection deformation of the tool during the shredding process, and the adjusting platform can overcome the excessive paper getting into the cutter. The mouth causes the phenomenon of the knives occurring between the cutting edges. Under the premise of ensuring the effect of shredding, the processing and production efficiency can be improved, and the service life of the shredder can be prolonged and the cost is basically unchanged.

 The present invention also provides an assembly method of the shredder mechanism as described above, in order to distinguish the conventional assembly method, and to assemble a tool set by a relatively simple structure and method, so that the cutting gap can be adjusted to solve the clearance fit. problem.

 In order to achieve the above object, the present invention adopts the following technical solutions:

 A shredder mechanism with an adjustable tool positioning device, including an integral cutter holder, a spiral cutter shaft, a fixed cutter, a bearing, and an adjustment screw. Wherein the integral cutter holder is made of a metal blank or other hard material, and two vertical plates are disposed at opposite ends thereof, and the vertical plate has a shaft hole or a circular recess in the middle, and the spiral cutting The cutter shaft is rotatably supported in the shaft hole of the integral cutter holder by bearings at its opposite ends. The shaft end of the spiral cutter shaft is matched with the inner ring of the bearing, and the diameter of the spiral cutter shaft is slightly smaller than the diameter of the outer ring of the bearing, and can pass through the shaft hole or the recess of the integral cutter holder integrally, and is fitted to the shaft in a clearance fit manner. Inside the hole. The rotary shaft drive end of the helical cutter shaft extends from a corresponding hole position of the integral cutter holder, and the spiral cutter shaft is coupled to the drive mechanism or the transmission mechanism via the rotary shaft drive end.

The main body of the overall tool holder has a rectangular recess, and the lower end surface of the recess is a positioning platform, and a plurality of longitudinal threaded connecting holes are uniformly arranged on the positioning platform. The fixed cutter has at least two flat faces, and the two straight faces are perpendicular to each other. At least two through holes are provided on the fixed cutter corresponding to the positions of the threaded holes on the positioning platform. During assembly, the fixed cutter adopts a threaded connection or other fastening means to be placed on the upper end surface of the positioning platform of the integral cutter holder. The function of the positioning platform is to stably support the fixed cutter, and the fixed cutter is fixedly held. At the same time, a plurality of adjusting washers can be added between the fixed cutter and the positioning platform, and the height of the fixed cutter can be adjusted by appropriately increasing or decreasing the number of the adjusting spacers, thereby adjusting the fixed cutter and the screw. A vertical fit clearance between the cutter axes.

 Since the positioning platform forms a planar support structure for the fixed cutter, during the cutting process, the load of the fixed cutter is evenly distributed to the entire positioning platform, thereby protecting the fixed cutter from reducing the overall deflection of the cutter and making the tool performance more stable. It has strong resistance to deformation and prevents its bending from being damaged. This reduces the overall requirement for the strength of the fixed cutter.

 The main body of the overall tool holder has a rectangular groove, the elevation of the groove is an adjustment platform, and a plurality of adjustment thread holes are evenly arranged on the adjustment platform, and the adjustment screw is a rod with a long thread at the top, and is used. The adjusting screw passes through the adjusting threaded hole of the adjusting platform to abut against the outer side wall of the fixed cutter, and the thread end thereof forms a horizontal top holding for the fixed cutter, and the screw is forwardly or retracted by the manual adjustment adjusting screw, thereby changing the screw The head end of the fixed cutter has a top limit of the peripheral area of the fixed cutter to control the radial spacing between the fixed cutter and the spiral cutter shaft to ensure a reasonable gap between the cutting edges. Press the fixed cutter to the cutting edge. Prevent lateral displacement under the action of shear force during the fixed cutter shredding.

 The spiral cutting blade shaft and the fixed cutter are made of metal or other hard material, and the fixed cutter has at least one flat cutting edge, and the spiral cutting blade shaft portion is provided with a plurality of parabolic shapes along its own axial direction. The side edge, the cutting edge of the spiral cutter shaft is generally 1 -6, used to control the length of the granular shredded paper.

 Wherein the arc-shaped cutting edge of the spiral cutting blade shaft and the fixed cutting blade cutting edge are properly matched, the matching is a clearance fit, and the gap between the two cutting edges is tangentially maintained between 0 and 0.1 mm. When the paper is shredded, the spiral cutter shaft abuts against the fixed cutter and rotates relative thereto, and the cutting edge of the spiral cutter shaft rotated to the top is tangent to the cutting edge of the fixed cutter, thereby forming a shear edge relationship. The paper entering the shredder mechanism is cut transversely after passing through the spiral cutter shaft and the fixed cutter.

 The paper shredder mechanism with adjustable tool positioning device of the invention is an improved form of the horizontal paper shredder spiral cutter set in the conventional shredder, and is suitable for the granular shredder with shredded paper by two pulverization methods, and the transverse shredder The paper mechanism and the vertical shredder mechanism are assembled together according to a certain method. When working, the paper to be shredded enters through the shredded paper path, and the vertical shredder mechanism is used to cut the paper into vertical strips, and the horizontal shredder mechanism The vertical strips are further cut into granules to complete the shredding work together.

The transverse shredder mechanism in the present invention is an independent module design, and the two sides of the horizontal shredder mechanism are provided with a plurality of screw connection holes or a connection portion capable of realizing a fixed function, and can be fixed by the screw connection and the frame. The horizontal shredder mechanism only needs to be assembled on the whole frame during assembly, located below or behind the exit position of the vertical shredder mechanism, and then connected to the transmission device. The transverse shredder mechanism can be separated during maintenance and replacement. Separate for maintenance, easy assembly, labor saving and time saving, no displacement during operation and operation, and guarantee the quality of shredded paper. The shredder mechanism with the adjustable tool positioning device provided by the invention adopts a special integral tool holder, which is provided with a positioning platform and an adjustment platform, and adopts a relatively stable structure and a method of the tube The tool set is assembled so that it can be adjusted, thereby overcoming the phenomenon of squeezing between the spiral cutting blade and the fixed cutter between the paper cutting into the cutting edge of the cutting tool, completely solving the problem of the traditional transverse shredder mechanism. The gap between the spiral cutter blade and the fixed cutter is difficult to adjust, easy to deform, and the crushing effect is unstable. In the process of production, processing and assembly, the processing yield is greatly improved, the installation efficiency is greatly improved; the tool pulverization stability is greatly improved, and the service life of the equipment is greatly improved.

 At the same time, I made the horizontal shredder mechanism consisting of the spiral cutter shaft and the fixed cutter into a separate module, which is beneficial to the installation and maintenance of the shredder, and makes the structure more compact and reasonable, and has very good commercial application value. .

 The structure of the invention has the advantages of high practicality, avoids the defects of the conventional assembly method of the paper shredder mechanism, and can be widely used in various granular paper shredders.

DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an overall structural view of a shredder mechanism with an adjustable tool positioning device of the present invention. Figure 2 is an exploded perspective view of a shredder mechanism with an adjustable tool positioning device of the present invention. Figure 3 is a schematic view showing the connection relationship between the transverse shredder mechanism and the vertical shredder mechanism in the present invention.

 Reference number:

 1 integral tool holder

 定位 Positioning platform

 12 Adjusting the platform

 13 shaft hole

 14 vertical board

 2 spiral cutting knife shaft

 3 fixed cutter

 4 bearings

 5 adjustment screw

 6 transverse shredder mechanism

 7 vertical paper cutting mechanism

detailed description

 The invention will now be described in further detail with reference to the drawings and embodiments.

Figure 1 is an overall structural view of a shredder mechanism with an adjustable tool positioning device of the present invention, and Figure 2 is an exploded perspective view of a shredder mechanism with an adjustable tool positioning device of the present invention, as shown in the figure As shown, a shredder mechanism with an adjustable tool positioning device of the present invention includes an integral tool holder 1, a spiral cutter shaft 2, a fixed cutter 3, and a bearing 4. Wherein, the whole tool holder 1 is made of a metal blank or other hard material, and two vertical plates 14 are disposed at opposite ends thereof, and the main body portion is respectively provided with a positioning platform il and an adjustment platform 12, and the whole cutter is fixed. The seat 1 is provided with a spiral cutter shaft 2 and a fixed cutter 3, and integrally constitutes a transverse paper shreding mechanism 6 for further cutting the input vertical strip paper into granular paper dust.

 The transverse shredder mechanism 6 includes a spiral cutter shaft 2 and a fixed cutter 3; the spiral cutter shaft 2 is mounted on the integral cutter holder 1 by its rotation shaft (not shown), the spiral cutter shaft 2 The rotary shaft drive end protrudes from the corresponding hole position of the integral tool holder 1, and can be connected to the drive mechanism or the transmission mechanism. The fixed cutter 3 is arranged on the end surface of the positioning platform n of the whole tool holder 1 by means of a circumferential thread connection or other fastening manner, and a thousand adjustment gaskets can be added between the fixed cutter 3 and the positioning platform n, by appropriate increase or decrease. By adjusting the number of shims to adjust the height of the fixed cutter, the vertical fit clearance between the fixed cutter 3 and the helical cutter shaft 2 can be adjusted. The positioning platform 1 1 is used to hold the fixed cutter 3 smoothly, and the fixed cutter 3 is fixedly held for the circumference.

 The adjustment platform 12 of the integral tool holder 1 adjusts the radial position of the fixed cutter 3. The adjusting screw thread 5 is passed through the adjusting screw hole of the adjusting platform 12 to abut against the outer side wall of the fixed cutter 3, and the thread end thereof constitutes a horizontal holding of the fixed cutter 3, and the adjusting screw 5 is manually adjusted to extend or retract. In order to change the vertical limit of the screw head end to the action area of the outer side wall of the fixed cutter 3, the radial distance between the fixed cutter 3 and the spiral cutter shaft 2 is controlled to ensure a reasonable gap between the cutting edges. At the same time, the fixed cutter 3 is pressed in the direction of the cutting edge. Preventing the fixed cutter 3 The lateral displacement occurs under the shear force during the shredding process.

 The manufacturing material of the spiral cutter shaft 2 and the fixed cutter 3 is metal or other hard material, and the fixed cutter 3 is provided with at least one flat cutting edge, and the blade of the spiral cutter shaft 2 is disposed along its own axial direction. There are a plurality of parabolic side edges, and the cutting edge of the spiral cutting blade 2 is generally 1 -6, which is used to control the length of the granular shredded paper. The arc-shaped cutting edge of the spiral cutter shaft 2 and the cutting edge of the fixed cutter 3 are appropriately matched, and the fitting is a clearance fit, and the gap between the two cutting edges is tangentially maintained between 0 and 0.1 mm. When the paper is shredded, the spiral cutter shaft 2 abuts against the fixed cutter 3 and rotates relative thereto, and the cutting edge of the spiral cutter shaft 2 rotated to the top is tangent to the cutting edge of the fixed cutter 3, forming a cutting edge The relationship is such that the paper entering the shredder mechanism is cut transversely after passing through the spiral cutter shaft 2 and the fixed cutter 3.

Referring to Fig. 3, the transverse shredder mechanism 6 is a separate module design, which is independently assembled on the integral frame of the shredder core and connected to the transmission. The transverse shredder mechanism 6 is mounted to the vertical shredder mechanism 7 Below, the cutting edge of the spiral cutter shaft 2 is brought to the lower position of the exit of the vertical paper cutting mechanism 7. In operation, the vertical paper cutting mechanism 7 and the transverse paper cutting mechanism 6 are simultaneously in operation. The paper to be shredded enters through the shredded paper path, and the cutter group of the vertical shredder mechanism 7 is used to cut the paper into vertical strips, and the cutter group of the transverse shredder mechanism 6 further cuts the strip shredded paper to rapidly pulverize the paper into small particles. .

 The two ends of the fixing plate 14 can be directly processed on the upper surface of the circular through hole as shown in this embodiment, or can be processed into a circular notch or a U-shaped opening, and the bearing 4 is placed. After the U-shaped groove, a gland is attached to the bearing to fix the bearing.

 The invention has the advantages of: providing a paper shreding mechanism with an adjustable tool positioning device with relatively simple structure and less auxiliary materials to be added, which can overcome the problem of smashing a plurality of sheets of paper into the cutting edge of the tool and causing a spiral cutting knife The deformation of the tool between the shaft and the fixed cutter not only facilitates the normal operation of the shredder, but also improves the shredder effect, so that the shredder can quickly and effectively pulverize the paper into a granule shape. High practicality, simple and convenient operation.

 The foregoing is a preferred embodiment of the present invention and the technical principles of the operation of the present invention, and those skilled in the art can make any basis based on the technical solution of the present invention without departing from the spirit and scope of the present invention. Obvious changes such as equivalent transformation, cartridge replacement, etc. are all within the scope of the present invention.

Claims

Rights request 1. A shredder mechanism with an adjustable tool positioning device, comprising an integral tool holder (1), a helical cutter shaft (2), a fixed cutter (3), a bearing (4) and an adjustment screw (5) , which is characterized by:  The whole tool holder (1) is provided with a shaft hole (13) or a circular recess at the two ends of the spiral cutter shaft (2), and the main tool holder (1) is fixedly mounted and fixed. a positioning platform (11) of the cutter (3) and an adjustment platform (12) for adjusting the position of the fixed cutter (3), the opposite ends of the spiral cutter shaft (2) are rotatably supported at the same On the integral tool holder (1), the fixed cutter (3) is fixed to the positioning platform (11) of the integral tool holder (1) by screwing, and can be fixedly cut by adjusting the platform (12) Adjust the relative position of the knife (3).  2. A shredder mechanism with an adjustable tool positioning device according to claim 1, wherein: the opposite ends of the integral tool holder (1) are provided with a vertical plate (14), the stand A shaft hole (13) or a circular recess for fixing the two axial ends of the spiral cutter shaft (2) is opened in the middle of the plate (14), and the spiral cutter shaft (2) is passed through the bearing at opposite ends thereof (4) ) rotatably supported on the integral tool holder (1).  3. The shredder mechanism with an adjustable tool positioning device according to claim 1, wherein: the main body of the integral tool holder (1) is provided with a rectangular groove, and the lower end of the groove It is the positioning platform (11) for fixing the fixed holding cutter (3).  4. A shredder mechanism with an adjustable tool positioning device according to claim 3, wherein: a plurality of longitudinal threaded connection holes are evenly arranged on the positioning platform (11), and a plurality of threaded connections are used. a through hole passing through the fixed cutter (3) is fixed to a threaded connection hole of the positioning platform (11), and the positioning platform (11) forms a planar support structure for the fixed cutter (3), When the cutting edge performs cutting, the load applied to the fixed cutter (3) is evenly distributed to the entire positioning platform. (11), reduce the deflection of the knife during the shredding process, so that the fixed cutter (3) has strong resistance to deformation and prevents bending. 5. A shredder mechanism with an adjustable tool positioning device according to claim 1, wherein: at least two through holes are provided on the fixed cutter (3) and the positioning platform (11) ) The position of the upper threaded connecting hole corresponds to each other. When assembling, add a number of adjusting washers between the fixed cutter (3) and the positioning platform (11), and adjust the fixed cutter by appropriately increasing or decreasing the number of adjusting washers. The height of the) can adjust the vertical fit clearance between the fixed cutter (3) and the helical cutter shaft (2). 6. A shredder mechanism with an adjustable tool positioning device according to claim 1, wherein: said body portion of said integral tool holder (1) has a rectangular recess, the elevation of the groove For the adjustment platform (12), the adjustment platform (12) is uniformly provided with a plurality of adjustment thread holes, and the threaded end of the adjustment screw (5) passes through the adjustment thread hole of the adjustment platform (12) and the fixing The outer side wall of the cutter (3) is offset.  7. A shredder mechanism with an adjustable tool positioning device according to claim 1, wherein: said fixed cutter (3) is provided with a cutting edge, said helical cutting blade (2) The cutting edge is 1-6.  8. A shredder mechanism with an adjustable tool positioning device according to claim 7, wherein: the arcuate cutting edge of the helical cutting blade (2) and the fixed cutter (3) There is a clearance fit between the cutting edges, and a gap of 0 to 0.1 mm is maintained between the interfaces of the two cutting edges. When the paper is shredded, the spiral cutting blade shaft (2) abuts against the fixed cutter (3) And rotating relative to the rotation, the circular cutting edge of the spiral cutter shaft (2) rotated to the top is tangent to the cutting edge of the fixed cutter (3), forming a shear edge relationship, so as to enter the The paper of the shredder mechanism is cut transversely by the spiral cutter shaft (2) and the fixed cutter (3).  9. A shredder mechanism with an adjustable tool positioning device according to claim 2, wherein: said helical cutter shaft (2) is rotatably mounted on said bearing (4) by said bearing (4) The shaft hole (13) or the circular recess of the integral tool holder (1) can accommodate and fix the shaft end, and the rotary shaft drive end of the spiral cutter shaft (2) is driven from the integral cutter holder (1) The corresponding cutting hole protrudes, and the spiral cutting blade shaft (2) can be connected to the driving mechanism or the transmission mechanism through the driving end of the rotating shaft.  10. A shredder mechanism with an adjustable tool positioning device according to claim 1, wherein: said shredder mechanism is a separate module design, and is provided on said two side vertical plates (14) A plurality of threaded connection holes for fixing to the frame.