Патент USA US2132270код для вставки
Get. 4, 1938. B, F. E. N\’LA1\EDER 3132370 MACHINE FOR PRODUCING FORM PIECES FROM WET FIBROUS MASS Filed Jan. 8, 1955 3 Sheets-Sheet l /9 10 IA‘... 6' 325 \ \ ll~ 3/~ l ,2 7 F r a 11/ //v vg/v 70/6 5/2 65,? Ali A/VA lq/mae Oct. 4, 1938. B, F 'E_ NYLANDER 2,132,270 MACHINE FOR PRODUCING FORM PIECES FROM WET FIBROUS MASS Filed Jan. 8, 13156 vI Q 2 I 12 L_ Q 2,54 aII‘ 3 Sheets-Sheet 2 25 _ ‘ 7 //\/ VE/VTO/Q 5/8655 F5 Ma a/m/se zéw wéwg Oct 41, 19380 B. F. E. NYLANDER 2,132,270 MACHINE FOR PRODUCING FORM PIECES FROM WET FIBROUS MASS Filed Jan. 8, 1956 3 Sheets-Sheet 5 1% ' jun-M, 1977’0/Z/l/EKS Patented Oct. 4, loss 2,132,276 UNITED STATES PATENT OFFHCE , 2,132,270 MACHINE FOR PRODUCING FORM PIECES FROM WET‘ FIBROUS MASS Birger Fredrik Engelbrekt Nylander, Hernosand, Sweden Application January 8, 1936, Serial No. 58,046 In Germany May 27, 1935 1 Claim. The present invention refers to machines for producing form pieces from wet ?brous mass for instance wood-pulp, which consist of an expansible, perforated core and a contractible, 5 perforated form arranged outside of the former, which consist of pieces slidably connected with each other, and between which the mass is adapted to be led in and compressed, watered-down and dried by the expansion of the core and con10 traction of the form and the introduction of a warmed pressure-medium, for instance vapour. One of the objects of the invention is the provision of a device wherein the expansion of the core is caused by the pressure-medium through the in- (CI. 92-62) outside are provided with conical shoulders,‘ " against which the ring 8 presses in immersed position. In order that the part Hi shall not lie against the parts of the form 2 until these have been brought together, the ring 8 is con nected with the plunger 9 by spring arrange ments 8 i». In the form 2 the core I2 is arranged and ?xed to a tube i3, which can be raised and lowered. The tube i3 is worked upon by by draulic means and its interior is connected with 10 a tube M, through which steam can be intro~ duced into the interior of the core l2. The mass is introduced through a tube 55 ?xed t0 the 1111 derside of the stand 5, which tube is connected 15 troduction of the same into the core. with a mass pump it and provided with a block- 15 The contraction of the form is effected in that a conical ring or the like, which is provided with a part forming the roof of the form, is pressed over conical shoulders on the form. The parts 20 of the core and the form are normally taken valve ll. Between the tube is and the stand there is besides arranged a slidable socket 93, which also is worked upon by hydraulic pressure. The core i2 consists of perforated plates 69 mov able against and from each other, which are 20 25 30 35 40 45 50 apart or compressed by spring arrangements in normally brought together by springs 2K8 ar the core and outside the form. ranged in the core. The form is at its inside provided with outletchannels for the water forming grooves, outside which perforated plates are arranged. Under the interspace between the core and the form in the stand of the machine outlet-channels are arranged for the water. An embodiment of the invention is shown in the annexed drawings. Fig. 1 shows the machine schematically in vertical longitudinal section in closed position. Fig. 2 shows the same in opened position. Fig. 3 shows the core in vertical section in contracted position. Fig. 4 shows the same in horizontal cross-section in contracted position. Fig. 5 shows the same in horizontal cross-section in expanded position. Fig. 6 shows the form in horizontal cross-section on one side in closed and on the other side in open position. In the stand I the form 2 is arranged, which consists of four parts 3 (Fig. 6) movable toward and away from each other. The parts 3 of the form 2, are at their inside provided with vertical conduits 4, outside of which perforated plates 5 are ?xed. The parts 3 are slidable in guide-bars in the stand I and are normally kept apart by means of springs ‘I ?xed at standards 6. The parts of the form are pressed against each other by means of a conical ring 8, which is ?xed to the lower end of a plunger 9, which is actuated by hydraulic pressure. Over the conical ring 8 a part I!) is arranged, which on immersion of the ring 8 forms a roof for the parts 3 of the form 2, tween the plates l9 angle-pieces 2i are arranged, which slide in guide-bars 22 ?xed to the plates. When a form piece is to be produced in the machine the ring 8 is ?rst brought down to the position shown in Fig. 1 by hydraulic pressure, whereby the parts of the form are brought to gether. After this the valve IT is opened, where by the mass from the pump it is pressed into the tube l5 and enters the interspace between the core I2 and the form 2. When this inter space is ?lled with mass, which has partly been watered-down by the pressure, whereby the water partly goes out through the tube l3 and partly through the channels 23 in the stand i, the pump It is stopped, and super?uous mass ?ows back to the pump. After this the valve l'i is closed and the socket is is brought up to the position shown by lines and dots, so that the interspace between the core l2 and the form 2 forms a closed room except for the perforations. Now overheated steam is led in to the tube I3 through the tube M and at the same time into the interior of the. core l2 through the channels 24, whereby the steam presses the parts of the core i2 out wards and at the same time waters down, warms, dries and presses the form piece, what can take place, as the holes of the perforations are very small. After the form piece has been watered down, dried and pressed to the desired degree, the sup— ply of steam through the tube M is stopped, , and which at its underside is shaped in a similar 55 Way as the inside of the parts 3, which at their At the collision-places be 25 30 35 40 45 50 whereby the parts of the core i2 are contracted by the spring arrangements 20, so that the form 55 2 2,132,270 piece 25 is loosened from the core. The ring 8 is then brought up again, whereby the parts of the form 2 of the spring arrangements 1 are brought apart, so that the form piece 25 is loos form to maintain the same in the contracted po sition while a form piece is being made, means ened. Now the case I 8 is brought upwards again, whereby the form piece is lifted up in the ma maintaining said form in the expanded state chine and can be removed from the same. when the second-mentioned means are devoid of The form piece produced by this machine, which is adapted to work automatically, shows 10 quite smooth surfaces inwardly as well as out wardly and has besides a dryness of at least 80%, a result, that cannot be arrived at by the ma chines known hitherto, where form pieces either get a rough surface or also have to be dried 15 after the forming by an expensive‘and time wasting procedure. It is evident that the invention may be varied in many respects without departing from the idea on which it is based. 20 tracted position, each of said plates being pro vided with small perforations; an expansible and contractible form, means adapted to engage said , Having now described my invention, what I ' claim is: A machine for producing pieces from a wet ?brous mass, comprising a core comprising a plurality of plates movable relatively to each 25 other, whereby said core may be expanded and contracted, and resilient means connected with said plates for maintaining said core in the con contact with said form, means supplying a wet ?brous mass in the space between said core and said form, means connected with said form for removing a fluid therefrom, and means‘ connected with said core for supplying a heated fluid under pressure into the interior of said core, whereby said fluid will press against the non-perforated portions of said plates to maintain said core in the expanded position and to heat and dry said wet ?brous, mass, whereby a form-piece is pro duced, said core being movable by the ?rst-men tioned means from the expanded position to the contracted position when the pressure of said ?uid is diminished, and said form being movable from the contracted position to the expanded po sition when the second-mentioned means are moved out of contact with said form, thereby fa cilitating the removal of said form-piece. BIRGER FREDRIK ' ENGELBREKT NYLANDER.