CN2899947Y - Integrated knife shaft of paper shredder - Google Patents

Abstract

The utility model discloses a integral type knife shaft for a paper shredder, which comprises a knife rod (1); wherein the knife rod (1) is provided with a plurality of equidistant blades (2), a knife groove (4) is formed between the adjacent blades (2), the outer annulus of the blade (2) is provided with a spiral groove (3); the utility model is characterized in that the blade (2) and the knife rod (1) are an integral structure, the depth of the knife groove (4) is 3.0 to 4.2 mm, the depth of the spiral groove (3) is 2.0 to 2.3 mm. On the premise of ensuring to be same with or higher than the paper delivery of the prior art, the utility model can process the blade, the gasket and the knife rod into the integral structure with the existing machining method, and have the advantages of the simple processing, convenient installation, high strength, long service life, low cost, etc.

Description

Shredder monoblock type cutter shaft

Technical field:

The utility model relates to a kind of cutter, particularly a kind of shredder monoblock type cutter shaft.

Background technology:

At present, shredder has been one of office accommodation that comparatively generally uses.The employed cutter shaft structure of known shredder is: a knife bar is arranged, be connected to several circular shear blades on knife bar, equally spaced cutter groove is arranged between the adjacent knife blades, be processed with helicla flute on the excircle of blade.During use, two groups of cutter shafts are bearing on the frame, be arranged in parallel, blade inserts mutually, driving cutter shaft by power set relatively rotates, the paper of desire chopping becomes the shredded paper bar identical with the cutter well width through the knife cut of being inserted mutually behind the cutter shaft, because spiral fluted effect shredded paper bar is cut off the formation paper scrap again.Existing shredder can be divided into a plurality of specifications according to the paper-passing quantity difference, as 0.5,0.6,0.8 or the like, and its cutter groove of the shredder of different size and spiral fluted degree of depth difference.The degree of depth of tradition 0.6 (6～8 of paper-passing quantities), 0.8 (8～10 of paper-passing quantities) specification kneader knife groove is that 5.5～6.0 millimeters, the helicla flute degree of depth are 3.0～3.5 millimeters.Because the qualification of this parameter, cause existing 0.6,0.8 specification knife pivot of paper crusher integral body not process, it can only be split-type structural, both first punching press processes single blade, blade is sleeved on the knife bar, and between adjacent knife blades, is set with the pad of consistency of thickness, several blade spaces are equated, and between adjacent blade, form the cutter groove, blade and pad and knife bar what be fixedly is by finishing with the nut of knife bar thread connection is fastening.The cutter shaft of this structure is owing to assemble, and part is many, the processing trouble, and assembling back intensity is low, the manufacturing cost height, service life is short.

Summary of the invention:

The purpose of this utility model is in order to solve the existing in prior technology technical problem, and a kind of shredder monoblock type cutter shaft of processing simple, low, the easy installation of cost, intensity height, long service life is provided.

Technical solution of the present utility model is: a kind of shredder monoblock type cutter shaft, it comprises knife bar 1, on knife bar 1, be provided with several equally spaced blades 2, form cutter groove 4 between the adjacent knife blades 2, on the excircle of blade 2, be provided with helicla flute 3, it is characterized in that: blade 2 is structure as a whole with knife bar 1, and the degree of depth of described cutter groove 4 is 3.0～4.2 millimeters, and the degree of depth of helicla flute 3 is 2.0～2.3 millimeters.

The utility model has changed the cutter groove and the helicla flute size of tradition 0.6,0.8 specification knife pivot of paper crusher, its cutter groove depth size and helicla flute depth dimensions all are shallower than corresponding size of the prior art, guarantee identical with the prior art paper-passing quantity or the prerequisite that increases under, can use existing machine-tooled method, blade, pad and knife bar are processed into overall structure, have processing simply, easy for installation, the intensity height, long service life, low cost and other advantages.

Description of drawings:

Fig. 1 is the structural representation of the utility model specific embodiment;

Fig. 2 is an A-A sectional schematic diagram shown in Figure 3;

Fig. 3 is the partial enlarged drawing of blade.

The specific embodiment:

As shown in the figure: adopt the turning mode that knife bar 1, blade 2, blade 3 are processed into integrative-structure, make and form cutter groove 4 between the adjacent knife blades 2, equidistant between each blade 2, the depth dimensions of cutter groove 4 is determined between 3.0～4.2 millimeters, be processed with helicla flute 3 on the excircle of blade 2, the depth dimensions of helicla flute 3 is determined between 2.0～2.3 millimeters.

Claims (1)

1. shredder monoblock type cutter shaft, it comprises knife bar (1), on knife bar (1), be provided with a plurality of equally spaced blades (2), form cutter groove (4) between the adjacent knife blades (2), on the excircle of blade (2), be provided with helicla flute (3), it is characterized in that: blade (2) is structure as a whole with knife bar (1), and the degree of depth of described cutter groove (4) is 3.0～4.2 millimeters, and the degree of depth of helicla flute (3) is 2.0～2.3 millimeters.

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