Patent Grant
6966513
The present invention relates to a double-duty shredder that can shift freely between different effects of stripe-cut and cross-cut, especially provides a linkage mechanism that can realize the effect of latitude cut and longitudinal cut and anti-block.
Shredders can be classed into two types, the stripe-cut shredders and cross-cut shredders, according to the machine cut style, the former comprises a set of blades used for cutting on revolving cut wheel to cut paper into strips, the latter comprises blades being provided with more than one hook-shaped edges and the edges are disposed helically around the revolving cut wheel to cut paper into strip longitudinally and cut paper into shatter of 5 mm×40 mm in latitudinal direction. Because the cut effect of latter is better than the that of garbage or the effect of keep security of destroying the contents on the paper, the cross-cut shredders has become the main flow of the market. Just because the cross-cut shredders cut paper more tinny, so the motor that provides the drive revolving cut wheel must more powerful than that of stripe-cut shredders. Besides because the blade used for cutting of stripe-cut shredders is provided with more than one hook-shaped edges, to avoid accidentally injure operator on the circumstance of the current is not break, so ISO have a regulation that the shredders must have safe activation switch, namely, cross-cut shredders act only on the condition that be set on the fixed position of garbage container provided with manufacture, on the contrary, if the shredders being removed from the garbage container the current will be broken.
Whereas those mentioned above, the present invention contemplates combining a cross-cut shredder and stripe-cut shredder into a unit, and a strip cross double-duty. The present invention provides a linkage mechanism to make double-duty shredders realize the effect of latitude cut and longitudinal cut and anti-block of chips.
And, namely, the main object of the present invention is to provide a linkage mechanism of cut paper and anti-block of double-duty shredders to make latitudinal cut blade and longitudinal cut blade of double-duty fulfill the act of cut paper by the cross movement of crank coupler link device and intermittent cluster gear.
The second object of the present invention is to provide a linkage mechanism of cut paper and anti-block of double-duty shredders, to make the paper chips left in the groove of cutter be expel out by expeller to avoid paper block after latitudinal cutter blade cut the paper.
Referring to
Referring to
A paper-expeller 6 is disposed on a second side of the paper-guide plate 20, and is inverted U-shaped and, is provided with paper-expel plate 60 and two side support arms 61, wherein, the end of support arm 61 includes a long-holed groove.
A crank coupler link group 7, wherein one end 701 of crank 70 is secured to said drive shaft 5, the other end 702 is secured to fixed end 711 of coupler link 71, the free end 712 of coupler link 71 is set in the long-hole groove 611 of two supporting arms 61 of said paper-expeller 6 after engaged with cutter rest 42 of said latitudinal paper-cutter 4.
A intermittent cluster gear 3, wherein drive gear 30 consists of normal gear wheel 301 and abnormal gear wheel 302, normal gear wheel 301 intermesh with motor drive gear wheel B to receive the rotate power and rotates driven gear wheel 31 intermeshed with normal gear wheel 31 and strip cutter wheel group 1.
Referring to
When two-layer cutter 41 finished prink the paper to be cut, as shown in view C, will rotate roundly with coupler link 70 and be pull back to left side by coupler link 71, and in the same way, when track length of circle rotate of coupler link 70 is longer than the length of long-hole groove 611, paper-expeller 6 will be compelled move left to make paper-expel plate 60 will move the paper chips left in the cutter groove 201 of paper-guide plate 20 alone the direction of strip cutter wheel group 1 to garbage container, to avoid paper chip store up cutter groove 201 of paper-guide plate 20 cause block.
The strip cutter wheel group 1 is in a static state when the latitude cutter 4 engages with the paper to be cut, because the strip cutter wheel group 1 will pull the paper to be cut down, and the paper to be cut cannot remain in a static state in the course of latitudinal cut. This function of strip cutter wheel group 1 pulling the paper to be cut down will tear the paper to be cut. So the strip cutter wheel group 1 must be kept in static state in the course of latitudinal cutter 4 engaging with the paper to be cut.
Referring to the views A, B, C of
In view C, the cutter rotates with crank 70 and is pulled back to left by coupler link 71 after finished pricking the paper to be cut; and then, the parts having teeth of abnormal gear wheel 302 intermeshes with the parts having teeth of driven gear wheel 31 and rotate strip cutter gear wheel 1 to pull paper to be cut down and cut longitudinally these paper. So, paper to be cut have been pricked by cutter 41 before be pulled down and be cut longitudinally by strip cutter gear wheel 1, so the effect of cutting paper will realize by the cross movement in circles of cutting the paper to be cut into paper chips.
We can conclude from the above mentioned, the present invention use the strip cutter gear wheel of stripe-cut shredder as longitudinal paper-cutter, the motor can be a smaller type than that of cross-cut shredder and will not confined by the ISO regulation that install compulsory active switch. Actually, the cross-cut shredder realize the effect of cut paper to be cut into chips by the latitude pricking of latitudinal cutter and he longitudinal cutting of said strip cutter wheel. The present is actually a new invention, and comply with the regulation for applying a patent.
| Number | Name | Date | Kind |
|---|---|---|---|
| 3620461 | Pelleschi et al. | Nov 1971 | A |
| 6079645 | Henreckson et al. | Jun 2000 | A |
| Number | Date | Country | |
|---|---|---|---|
| 20040135019 A1 | Jul 2004 | US |
