CN201168633Y

CN201168633Y - Knife shaft assembly of paper crusher

Info

Publication number: CN201168633Y
Application number: CNU2008200427191U
Authority: CN
Inventors: 黄崇渊
Original assignee: DONGGUAN HUANG LEE ELECTRIC Co Ltd
Current assignee: DONGGUAN HUANG LEE ELECTRIC Co Ltd
Priority date: 2008-01-11
Filing date: 2008-01-11
Publication date: 2008-12-24
Anticipated expiration: 2018-01-11

Abstract

The utility model discloses a cutter shaft component of a shredder which is convenient to be processed. The cutter shaft component is composed of a cutter shaft and blades installed on the cutter shaft. The surface of the cutter shaft is provided with more than one shallow groove, and the inner edges of mounting holes of the blades are formed with matched convex points corresponding to the shallow grooves. The shallow grooves on the cutter shaft are spirally arranged in a uniform way along the axial direction of the cutter shaft, and the blades are uniformly installed on the cutter shaft of a spiral shape matched with the convex points by the shallow grooves. After adopting the technical proposal, the groove depth of the spiral grooves on the cutter shaft is smaller, so the spiral grooves do not need to be milling processed, and can be processed by a cold drawing process following the section of the cutter shaft to form an integer at the same time, therefore, the cutter shaft processing cost can be saved to a great extend. At the same time, because each of the grooves is of a spiral shape, each of the mounting holes of the blades is only needed to be manufactured inside with a convex point to be matched with each of the spiral shallow grooves of the cutter shaft, therefore, the spiral arrangement of cutter points of the blades installed on the cutter shaft along the shallow grooves can be realized to reach the function that the torque which is needed to cut paper is dispersed.

Description

The cutter shaft assembly of shredder

Technical field:

The utility model relates to the shredder product technical field, refers in particular to a kind of cutter shaft assembly of the shredder of being convenient to process.

Background technology:

It is improper that discarded script is collected, and results in hand cramps for our work, even can cause serious consequence to managing safety.In the past all be that the way of adopt burning is collected, it not only needs the place of a burning, and can cause serious air pollution.In order to change this situation, various shredders have come out.

The inner paper-shredding part structure of traditional shredder generally by motor drive a series of transmission shifting mechanisms outputs than the slow-speed of revolution, than high pulling torque to having on many two tool setting shaft assemblies to blade for shredding paper.See Fig. 1, the blade 3 of crush type shredder is generally plate-like, and laterally cut bundle, pull disconnected blade 32 and constitute by a cutter that paper vertically can be cut 31 and with paper, this blade 3 is generally by being installed on the knife pivot of paper crusher 4 by polygon hole or D shape hole or class D shape hole, certainly these cutter shaft 4 installation blades 3 place's cross sectional shapes are polygon or D shape hole or class D shape accordingly, and a plurality of blades 3 at interval evenly, the point of a knife 321 staggered shredded paper zones that are installed in whole cutter shaft 4 of blade 32.The stagger purpose of dispersed arrangement of point of a knife 321 is that point of a knife pricks the mean forced of opening or pullling out with paper and be distributed in the whole cutter shaft 4 rotary paper-cutting processes, thereby avoids the phenomenon in shredded paper process required torque inequality.

For realizing that above-mentioned blade point of a knife 321 staggers dispersed arrangement on the whole circumference of cutter shaft 4, way is that cutter shaft 4 cross sections and blade installing hole shape are selected polygon for use, hexagon as shown in Figure 1 usually.And the position of the point of a knife 321 of blade 3 on the same group is not with respect to polygon orifice angle difference, angle of deviation a as shown in Figure 2, though this kind way can reach point of a knife 321 purpose of dispersed arrangement on cutter shaft 4 that stagger, but the blade kind is many, assembling needs classification to divide preface to install on the production line, is unfavorable for its operating efficiency.

See Fig. 3, another kind of traditional method is that tool bore 33 is processed, make the inner edge of tool bore 33 form uniform teeth groove 331, cutter shaft 4 is processed into the polygon that cooperates with this teeth groove 331, deflection by blade just can form spiral distribution when blade 3 is installed like this, but the processing more complicated of the mode of kind, operation is slow excessively, and costs an arm and a leg.

Certainly, also have many modes to realize that cutter shaft cooperates with spiral between the blade, but the processing of these cutter shaft assemblies more complicated all cause the cost of product too high.

The utility model content:

Technical problem to be solved in the utility model overcomes the deficiencies in the prior art exactly, provides a kind of easy to process, the cutter shaft assembly of lower-cost shredder.

For solving the problems of the technologies described above, the utility model has adopted following technical scheme: cutter shaft and be installed in blade on the cutter shaft, and the surface of this cutter shaft offers the shallow slot of one or more, and corresponding shallow slot is formed with the salient point that matches on the installing hole inner edge of blade.

Shallow slot on the described cutter shaft evenly distributes along cutter shaft axial direction spiral, and blade cooperates helical form evenly to be installed on the cutter shaft by shallow slot with salient point.

Shallow slot on the described cutter shaft with the cutter shaft one by the machine-shaping of cold-drawn operation.

After the utility model adopts technique scheme, the groove depth of the helical form shallow slot on the cutter shaft is less, it does not need to pass through in addition Milling Process, can process simultaneously by one cold-drawn operation with cutter shaft cross section one, so just can save the cutter shaft processing cost to a great extent, therefore groove is a helical form simultaneously, and only need make the salient point that is complementary with cutter shaft spiral shallow slot in the installing hole of blade gets final product, so just can realize that the point of a knife that is installed in the blade on the cutter shaft distributes with the shallow slot spiral, to reach the function of disperseing to cut off the paper required torque.

Description of drawings:

Fig. 1 is the schematic cross-section of existing cutter shaft assembly;

Fig. 2 is an adjacent knife blades schematic diagram in the cutter shaft assembly of Fig. 1;

Fig. 3 is the stereogram of existing another kind of cutter shaft assembly;

Fig. 4 is the three-dimensional structure diagram of the utility model cutter shaft;

Fig. 5 is the schematic diagram of the utility model blade;

Fig. 6 is a stereogram of the present utility model.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model is further described:

See Fig. 4,5,6, the utility model comprises cutter shaft 1 and is installed in blade 2 on the cutter shaft 1.Cutter shaft 1 is that a cross section is circular (perhaps similar round), and the surface of this cutter shaft 1 offers the shallow slot 11 of one or more, has offered four shallow slots 11 in the present embodiment.Corresponding shallow slot 11 is formed with the salient point 21 that matches on installing hole 20 inner edges of blade 2.Wherein, the shallow slot 2 on the cutter shaft 1 evenly distributes along cutter shaft axial direction spiral, and blade 2 cooperates helical form evenly to be installed on the cutter shaft 1 by shallow slot 11 with salient point 21.

Shallow slot 2 on the described cutter shaft 1 with cutter shaft 1 one by the machine-shaping of cold-drawn operation, after the utility model adopts technique scheme, the groove depth of the helical form shallow slot 11 on the cutter shaft 1 is less, it does not need to pass through in addition Milling Process, can process (uniform rotation in the Cold Drawing Process is adopted in concrete processing) simultaneously by one cold-drawn operation with cutter shaft 1 cross section one, so just can save cutter shaft 1 processing cost to a great extent, therefore shallow slot 11 is helical forms simultaneously, and only need make the salient point 21 that is complementary with cutter shaft spiral shallow slot 11 in the installing hole 20 of blade 2 gets final product, so just can realize that the point of a knife 22 that is installed in the blade 2 on the cutter shaft 1 distributes with the shallow slot spiral, to reach the function of disperseing to cut off the paper required torque.

Certainly, the above only is embodiment of the present utility model, be not to limit the utility model practical range, for example the quantity of shallow slot 2 can according to circumstances design, it can be two, three, five etc., all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model claim.

Claims

1, a kind of cutter shaft assembly of shredder, it comprises: cutter shaft (1) and be installed in blade (2) on the cutter shaft (1), it is characterized in that: the surface of this cutter shaft (1) offers the shallow slot (11) of one or more, and corresponding shallow slot (11) is formed with the salient point (21) that matches on installing hole (20) inner edge of blade (2).

2, the cutter shaft assembly of shredder according to claim 1, it is characterized in that: the shallow slot (2) on the described cutter shaft (1) distributes along cutter shaft axial direction spiral, and blade (2) cooperates helical form to be installed on the cutter shaft (1) by shallow slot (11) with salient point (21).

3, the cutter shaft assembly of shredder according to claim 1 is characterized in that: the shallow slot (2) on the described cutter shaft (1) with cutter shaft (1) one by the machine-shaping of cold-drawn operation.