Patent ID: 7669278
Filing Date: 2010-03-02
Classification: B26D,Y10T

Abstract:
1. A brush mounting structure for a cutting table in an automatic cutting machine, the brush mounting structure comprising at least one cut-support surface brush mounted onto a brush mount, the brush hairs of the cut-support surface brush forming a cutting surface for a sheet material, the cutting machine having a suction mechanism, disposed under the brush mount, for suctioning the sheet material put on the cut-support surface, and a cutting device disposed over the cut-support surface and adapted to be movable to any selected position so that the sheet material on the cut-support surface can be cut to a desired shape by movement of the cutter device, the cut-support surface for the sheet material being adapted to be movable as a conveyor to carry out the sheet material after cut; wherein the cut-support surface brush has a number of hard hairs at an upper side of a base thereof having air suction holes and has a plurality of rows of projections at a reverse side of the same, the projections of the brush being detachably engageable with and movable with respect to the brush mount, wherein the brush and brush mount are arranged to travel along an endless chain of the cutting table, in use, and have a front end and a rear end relative to the direction of travel, and wherein the brush is movable with respect to the brush mount in a side to side direction relative to the direction of travel; wherein the projections include an engaging projection having an engaging surface formed in a front row of projections of the brush which is configured differently than an engaging surface of a back row of projections and which is adapted to be hooked more firmly than the engaging surface of the back-row projection and which serves as a holding surface to prevent undesired release of the engagement between the brush and the brush mount against a load applied from a direction normal to the cut support surface, and wherein the mount includes an engaging rib having an engaging surface confronting the engaging surface of the back row of projection of the brush, and a holding rib having a holding surface which confronts the engaging surface of the front row of engaging projection of the brush and wherein the holding rib is configured differently than the engaging rib and is adapted to be hooked more firmly than the engaging surface of the engaging rib; such that when a rear portion of the brush is lifted, the back row projection releases from the engaging rib enabling disengagement of the brush from the mount, but when the brush is lifted at a front end thereof, it is hooked more firmly and not so easily disengaged as when lifted at the rear portion.