Device and method for adjusting the work gap between the points of flat clothings and the points of the cylinder clothing of a card

Abstract

A device for adjusting the work gap between the points of the flat clothings and the points of the cylinder clothing of a card, whereby the flat bars being furnished with clothings are led over a partial area of the drum circumference on both sides of the card on sliding surfaces which are being provided with respective convex bent sliding guides, whereby the flat bars are being provided with flat heads, furnished with sliding surfaces, which slide alongside the sliding guides, the sliding guides each are being formed by a bent part and the radial position of the sliding surfaces of the sliding guides in relation to the axis of rotation of the drum is changeable by changing the local position of the parts is characterized in that those parts, each forming the sliding guides, are supported at several discrete supporting points and are shiftably arranged in relation to the supporting points, around the axis of rotation of the drum, whereby the sliding surfaces of the sliding guides, for adjusting the work gap, are movable in radial direction.

1 . Device for adjusting the work gap (A) between the points of the flat clothings ( 44 ) and the points of the cylinder clothing ( 68 ) of a card, whereby the flat bars ( 40 ) being furnished with clothings ( 44 ) are led over a partial area of the drum circumference on both sides of the card ( 10 ) on sliding surfaces which are being provided with respective convex bent sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ), whereby the flat bars are being provided with flat heads ( 46 ), furnished with sliding surfaces, which slide alongside the sliding guides, the sliding guides each are being formed by a bent part and the radial position of the sliding surfaces of the sliding guides in relation to the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ; 775 ) is changeable by changing the local position of the parts characterized in that those parts, each forming the sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ), are supported at several discrete supporting points ( 157 ;  257 ;  357 ;  457 ;  557 ;  757 ) and are shiftably arranged in relation to the supporting points, around the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ;  775 ) whereby the sliding surfaces of the sliding guides for adjusting the work gap (A) are movable in radial direction (between  171  and  173 ;  271  and  273 ;  371  and  373 ;  471  and  473 ;  571  and  573 ;  771  and  773 ).  
     
     
         2 . Device according to  claim 1 , characterized in that the parts forming the sliding guides ( 152 ) each of them is designed as oblong, bent wedge and, that the supporting points ( 157 ) are formed by fixedly arranged support noses ( 159 ).  
     
     
         3 . Device according to  claim 1 , characterized in that the parts forming the sliding guides ( 252 ) each of them is designed as oblong, bent wedge and that the supporting points are formed by stationary, however rotatable arranged rolls ( 273 ) which are rotatable around respective axes of rotation ( 277 ) which extend parallel to the axis of rotation ( 275 ) of the drum.  
     
     
         4 . Device according to  claim 1 , characterized in that the supporting points ( 557 ;  757 ) are formed by rotatable snail-formed cams ( 583 ;  783 ).  
     
     
         5 . Device according to  claim 4 , characterized in that the parts forming the sliding guides ( 552 ;  752 ) each of them is designed as oblong, bent wedge.  
     
     
         6 . Device according to  claim 4 , characterized in that the parts forming the sliding guides ( 652 ) each of them has a constant radial dimension over its entire length.  
     
     
         7 . Device according to  claim 4 ,  5  or  6 , characterized in that the sliding guides ( 752 ) are provided with teeth ( 791 ) which comb with teeth ( 789 ) of the snail-formed cams ( 783 ), whereby a shifting ( 769 ) of the sliding guides ( 752 ) around the axis of rotation of the drum ( 775 ) leads to a turning movement of the snail-formed cams around their axes of rotation ( 777 ) running parallel to the axis of rotation of the drum ( 775 ) and therefore leads to a radial shift of the sliding surfaces of the sliding guides ( 752 ).  
     
     
         8 . Device according to  claim 1 , characterized in that the parts forming the sliding guides ( 352 ), where they correspond with the supporting points ( 357 ), carry a step-shaped ramp ( 383 ) each, whose steps ( 385 ), depending on the respective turning position of said part around the axis of rotation ( 375 ) of the drum, cooperate with the supporting points ( 357 ) being formed by the supporting noses ( 359 ) in order to determine the radial position of the sliding surfaces of the sliding guides (between  371  and  373 ).  
     
     
         9 . Device according to  claim 8 , characterized in that the parts forming the sliding guides each of them has a constant radial dimension over its entire length.  
     
     
         10 . Device according to  claim 9 , characterized in that the supporting points are formed by rotatable snail-formed cams.  
     
     
         11 . Device according to  claim 8  or  9 , characterized in that the surfaces of the steps ( 385 ) are inclined in relation to the circumferential surface of the drum.  
     
     
         12 . Device according to  claim 1 , characterized in that on the supporting points ( 457 ) rotatable supporting members ( 483 ) are provided, whereby each supporting member has at least two ( 485 ) supporting surfaces, each with a different radial distance from the axis of rotation ( 489 ) of the respective supporting member ( 483 ).  
     
     
         13 . Device according to  claim 12 , characterized in that each sliding guide ( 452 ) is designed as oblong, bent wedge.  
     
     
         14 . Device according to  claim 13 , characterized that each sliding guide has a constant radial dimension over its entire length.  
     
     
         15 . Device according to  claim 1 , characterized in that on the supporting points ( 557 ) rotatable supporting members ( 583 ) are provided, whereby each supporting member has at least two supporting surfaces ( 585 ) which are designed as a bend ramp each, whereby the supporting surfaces ( 585 ) merge via respective radial steps (ΔR) into one another.  
     
     
         16 . Device according to  claim 14  or  15 , characterized in that one or several mechanisms are provided in order to make possible a turning of the rotatable supporting members ( 483 ;  583 ) into the respective desired turning positions.  
     
     
         17 . Device according to one of the preceding claims, characterized in that a mechanism ( 163 ;  263 ;  363 ;  463 ;  563 ;  763 ) is provided in order to shift the parts forming the sliding guides around the axis of rotation of the drum.  
     
     
         18 . Device according to one of the preceding claims, characterized in that for each sliding guide ( 152 ;  252 ;  352 ;  452 ;  552 ;  752 ) of three up to twenty, preferably three to six supporting points ( 157 ;  257 ;  357 ;  457 ;  557 ;  757 ) are provided.  
     
     
         19 . Device for adjusting the work gap (A) between the points of the flat clothings ( 44 ) and the points of the cylinder clothing ( 68 ) of a card, whereby the flat bars ( 40 ) being furnished with clothings ( 44 ) are led over a partial area of the drum circumference on both sides of the card ( 10 ) on sliding surfaces which are being provided with respective convex bent sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ), whereby the flat bars are being provided with flat heads ( 46 ), furnished with sliding surfaces, which slide alongside the sliding guides, the sliding guides each are being formed by a bent part and the radial position of the sliding surfaces of the sliding guides in relation to the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ; 775 ) is changeable by changing the local position of the parts characterized in that, each part forming a sliding guide is provided in the form of two sections which follow each other around the axis of rotation of the drum, said sections being swivably linked with one another with their facing ends on a common radially adjustable support and which are supported around their far ends by respective radially adjustable supports.  
     
     
         20 . Device according to  claim 19 , characterized in that the two separate sections of each part within the area of their facing ends overlap and/or engage with one another.  
     
     
         21 . Device according to  claim 19  or  20 , characterized in that for each section at least one further radially adjustable support is provided which is located between the common support and the supports at the end of the respective section.  
     
     
         22 . Device for adjusting the work gap (A) between the points of the flat clothings ( 44 ) and the points of the cylinder clothing ( 68 ) of a card, whereby the flat bars ( 40 ) being furnished with clothings ( 44 ) are led over a partial area of the drum circumference on both sides of the card ( 10 ) on sliding surfaces which are being provided with respective convex bent sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ), whereby the flat bars are being provided with flat heads ( 46 ), furnished with sliding surfaces, which slide alongside the sliding guides, the sliding guides each are being formed by a bent part and the radial position of the sliding surfaces of the sliding guides in relation to the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ; 775 ) is changeable by changing the local position of the parts characterized in that the oblong bent parts forming the sliding guides ( 952 ) are provided each with a heating mechanism ( 999 ) which is able to warm-up the parts over their entire length, that each oblong part is fixedly connected on its two ends ( 953 , 955 ) and that it bends through the length variation caused by the thermal expansion and thus the radial position of the sliding surface of the respective sliding guides is alterable.  
     
     
         23 . Device according to  claim 22 , characterized in that the ends ( 953 ,  955 ) of the respective parts ( 952 ) are held by respective radially adjustable supports.  
     
     
         24 . Device according to  claim 22  or  23 , characterized in that each part is furnished as oblong bimetallic strip.  
     
     
         25 . Device according to  claim 22 ,  23  or  24 , characterized in that each of the parts forming the sliding guides ( 952 ′) is designed as continuous double wedge and that in the middle longitudinal range they are provided with a larger radial depth than in the respective area at the far end of each of the said parts.  
     
     
         26 . Device according to  claim 22 ,  23  or  24 , characterized in that the parts forming the sliding guides ( 952 ) each have a constant radial dimension over their entire length.  
     
     
         27 . Method to adjusting the work gap (A) between the points of the flat clothings ( 44 ) and the points of the cylinder clothing ( 68 ) of a card, whereby the flat bars ( 40 ) being furnished with clothings ( 44 ) are led over a partial area of the drum circumference on both sides of the card ( 10 ) on sliding surfaces which are being provided with respective convex bent sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ), whereby the flat bars are being provided with flat heads ( 46 ), furnished with sliding surfaces, which slide alongside the sliding guides, the sliding guides each are being formed by a bent part and the radial position of the sliding surfaces of the sliding guides in relation to the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ; 775 ) is changeable by changing the local position of the parts, characterized in that the parts forming the sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ) are each supported on several discrete supporting points ( 157 ;  257 ;  357 ;  457 ;  557 ;  757 ) and are being shifted around the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ;  775 ) in relation to said supporting points, in order to move the sliding surfaces of the sliding guides in radial direction for adjusting the work gap.  
     
     
         28 . Method according to  claim 27 , characterized in that on the supporting points ( 157 ;  257 ;  357 ;  457 ;  557 ;  757 ) supporting members ( 159 ;  273 ;  359 ;  483 ;  583 ;  783 ) are being adjusted to perform a readjustment and that for performing a micro-adjustment with an even radial adjustment of the sliding surfaces of the sliding guides, the shifting ( 169 ;  269 ;  369 ;  469 ;  569 ;  769 ) of the sliding guides ( 152 ;  252 ,  352 ;  452 ;  552 ;  652 ;  752 ) around the axis of rotation of the drum ( 175 ;  275 ;  375 ;  475 ;  575 ;  675 ;  775 ) is being performed.