CN201157793Y

CN201157793Y - Blade suitable for cutter of paper grinder

Info

Publication number: CN201157793Y
Application number: CNU2008200003809U
Authority: CN
Inventors: 许培振
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-08
Filing date: 2008-01-08
Publication date: 2008-12-03
Anticipated expiration: 2018-01-08

Abstract

The utility model discloses a knife blade for a cutting tool of a paper shredder. The paper shredder is provided with two cutting tool groups, each cutting tool group comprises a plurality of knife blade groups, and every knife blade group comprises two unit knife blades; each unit knife blade is in the shape of a disc, and a protuberant ring part which axially protrudes towards the outer side is formed in the center of the unit knife blade; the inner side of the protuberant ring part is provided with a through hole, and the disc surface on the periphery of the protuberant ring part is provided with a plurality of protuberant bases which are opposite to the protuberant ring part and axially protrude towards the protuberant ring part, so that the two unit knife blades can pop against the protuberant bases; the reverse sides of the protuberant bases are provided with corresponding recesses; the knife blades in the shape of accurate angles are externally formed along the radial direction of the peripheries of the two unit knife blades. The protuberant bases formed by utilizing the unit knife blades increase the anti-deformation intensity, can adopt thinner steel plates for blanking, and reduce the cost of materials.

Description

Be applicable to the blade of cutter for paper grinder

Technical field

The utility model is involved in the technical field of the shredder of handling waste paper, relate in particular to a kind of at shredder in order to cut out the blade on the broken cutter, this blade has the better intensity of tool with minimal material.

Background technology

Handle out-of-date secret file in order to avoid be subjected to intentionally personage's utilization for convenient, therefore just have shredder to cut out broken these and need handle the paper file of recovery, with the tool confidentiality.Shredder generally is that rotating two groups of cutters are set, and when waste paper is twisted into cutter, just the blade by set of knives shreds into fine strip shape.

Blade utility model patent case as the cutter for paper grinder of Granted publication CN2246539Y, show that promptly the axostylus axostyle of cutter for paper grinder group is arranged with the blade of plate-like, blade is by two auxiliary-blades and set up jointly, the auxiliary-blade periphery has cutting blade, both sides are extended with the fixing part, there is a perforation in fixing part central authorities, in order to and be enclosed within on the axostylus axostyle.The aforementioned utility model patent case of quoting, the fixing part of its blade is to extend out more, and its steelplate punching with about 2mm thickness forms, and the paper slip width of cutting a sheet of paper that makes two auxiliary-blades combine is 4mm.

But in recent years, comprising the former materials of various metal such as steel significantly appreciates, use the steel plate of 2mm thickness to come stamping-out to go out auxiliary-blade, increase material cost and made dealer's worries, and aforementioned utility model patent case multiaxis makes the material cost of stamping-out steel plate increase again much, the raising of cost to extending the fixing part, be that dealer and consumer can be unable to stand, more influence purchase intention.

The utility model content

The utility model main purpose is to be to provide a kind of blade that is applicable to cutter for paper grinder, and it mainly is that blade system just has advantage not yielding, low material cost with thinner thickness.

The utility model is to adopt following technological means to realize:

A kind of blade that is applicable to cutter for paper grinder, shredder has two set of knives, each set of knives comprises several set of blades, each set of blades includes two unit blades, this unit blade is a plate-like, in be formed centrally one day one outboard shafts to outstanding prominent ring portion, should the inboard formation one of prominent ring portion bore a hole, have several on the card of this side is in reverse to this prominent ring portion and is axially outstanding protruding seat in prominent ring portion week, in order to this Unit two blade against each other with this protruding seat, it is to be the depression that is arranged with relatively that this protruding seat forms outstanding other face, and these unit blade outer peripheral edges radially form acute angle-shaped blade outward.

The protruding seat end of aforesaid unit blade is smooth.

Aforesaid unit blade is identical with the thickness of protruding seat, card in the prominent ring portion of formation.

It is acute angle-shaped that the blade of aforesaid unit blade is the monocline face, makes two blades also by forming the V-arrangement space.

The effect that the utility model obtains is described as follows:

1, the utility model mainly makes the unit blade to go out to have the kenel of concavo-convex variation face than the minimal thickness stamping-out, therefore just can go out identical paper scrap width, same unit blade thickness with the steelplate punching than minimal thickness; For example prior art adopts the steel plate of 2mm thickness to come stamping-out, but the utility model is can be with the steelplate punching of 0.8mm thickness, cooperating the outstanding relatively thickness of protruding seat is 1.2mm, allow unit blade gross thickness still reach 2mm, reach equally and cut out the paper scrap bar that width is 4mm, so blade system in unit of the present utility model uses less material and reaches the identical shredded paper effect that cuts.

Though 2, the utility model uses than sheet metal, yet form the protruding seat of concavo-convex section at the unit blade, make the card of unit blade therefore form concavo-convex thickness section shape, therefore can improve the rigidity intensity of impedance distortion, effectively prevent distortion, promote holding strength and rigidity relatively, increase service life.

Description of drawings

Fig. 1 is the three-dimensional assembly decomposing schematic representation of the utility model preferred embodiment;

Fig. 2 is the unit blade stereogram of the utility model preferred embodiment;

Fig. 3 is the set of blades 3-3 cross-section cutaway view of the utility model device preferred embodiment;

Fig. 4 is the set of blades 4-4 cross-section cutaway view of the utility model preferred embodiment;

Fig. 5 is that floor map is looked closely in first and second set of knives configuration of the utility model preferred embodiment.

The specific embodiment

Below in conjunction with accompanying drawing specific embodiment of the utility model is illustrated:

A kind of blade that is applicable to cutter for paper grinder of the utility model, as shown in Figure 1, shredder generally comprises one first set of knives 40, second set of knives 41 relative with, wherein first set of knives 40 and second set of knives 41 all possess a cutter shaft bar 10, and it is several to the sheathed set of blades 20 that is positioned axostylus axostyle 10, each set of blades 20 all has two unit blades 40, just stretch into two set of blades, 20 spaces of second set of knives 41 with the set of blades 20 of first set of knives 40, form the set of blades 20 submission misphase neighbours of first set of knives 40 and second set of knives 41, the utility model principal character is the change of unit blade 30.

Please referring again to Fig. 1, shown in Figure 2, unit of the present utility model blade 30 is the steelplate punching shapings with 0.8mm thickness, unit blade 30 is a plate-like, in be formed centrally one towards an outboard shafts to outstanding prominent ring portion 31, prominent ring portion 31 inboard formation one perforation 32, perforation 32 is an inner polygonal hole, be plugged in the cutter shaft bar 10 in order to cooperation, unit blade 30 is on the card of prominent ring portion 31 all sides, stamping-out goes out several and is in reverse to the axially outstanding protruding seat 33 of prominent ring portion 31, protruding seat 33 is conuli shape circle seat, it is smooth that end surface is sealing, so that two unit blades 30 recline mutually steadily with protruding seat 33, it is to be the depression 331 that relative shape is arranged with that protruding seat 33 forms outstanding other face, by prominent ring portion 31 and protruding seat 33, it is identical that the stamping-out of card forms thickness, and has on-deformable intensity, in addition, unit blade 30 outer peripheral edges radially, stamping-out goes out the acute angle-shaped blade of monocline face 34 outward.

When therefore set of blades 20 makes up, as Fig. 1,3, shown in 4, serves as relative with two unit blades 30 with protruding seat 33 directions, and form the protruding seat 33 of each of two unit blades 30 and be to aim at and recline, each forms depression 331 and prominent ring portion 31 all separately toward the outer side, blade 34 is also aimed to recline mutually and is formed with V-arrangement space (as Fig. 3), establish and together cutter shaft bar 10 axial suit groups are aimed in the perforation 32 of set of blades 20, because the prominent ring portion 31 of each set of blades 20 is towards the outside, therefore the set of blades 20 that respectively is installed on cutter shaft bar 10 can form spacings by prominent ring portion 31, and the set of blades 20 of first set of knives 40 must be entered in the relative gap of second set of knives, 41 set of blades 20;

To count set of blades 20 and be assembled in cutter shaft bar 10 and just form first set of knives 40 and second set of knives 41, and see also shown in Fig. 1,5, the blade of unit separately 30 of first set of knives 40 and second set of knives 41 is described, be to be the adjacent shape that staggers.So after waste paper is sent into shredder, just can be cut into the paper scrap strip by the unit blade 30 of first set of knives 40 and second set of knives 41.

Thus, unit of the present utility model blade 30 on the implementation, steelplate punching that can 0.8mm thickness, and the outstanding thickness of protruding seat 33 is 1.2mm, allow blade 30 gross thickness in unit still can reach 2mm, can cut out width equally is the paper scrap bar of 4mm, so unit of the present utility model blade 30 just can reach the identical thickness that cuts with minimum thickness, reduces the material cost of forming unit blade 30.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of utility model, and it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. blade that is applicable to cutter for paper grinder, shredder has two set of knives, and each set of knives comprises several set of blades, and each set of blades includes two unit blades, it is characterized in that:

This unit blade is a plate-like, in be formed centrally one towards an outboard shafts to outstanding prominent ring portion, should the inboard formation one of prominent ring portion bore a hole, have several on the card of this side is in reverse to this prominent ring portion and is axially outstanding protruding seat in prominent ring portion week, in order to this Unit two blade against each other with this protruding seat, it is to be the depression that is arranged with relatively that this protruding seat forms outstanding other face, and these unit blade outer peripheral edges radially form acute angle-shaped blade outward.

2. the blade that is applicable to cutter for paper grinder as claimed in claim 1 is characterized in that: the protruding seat end of described unit blade is smooth.

3. the blade that is applicable to cutter for paper grinder as claimed in claim 1 is characterized in that: described unit blade is identical with the thickness of protruding seat, card in the prominent ring portion of formation.

4. the blade that is applicable to cutter for paper grinder as claimed in claim 1 is characterized in that: it is acute angle-shaped that the blade of described unit blade is the monocline face, makes two blades also by forming the V-arrangement space.