US2278552A - Conveying device - Google Patents

Description

April 1942. MAURER 2278352 CONVEYING DEVICE Original Filed D90. 13, 1939 2 Sheets-Sheet 1 INVENTOR GOTTFRlEU MAURER CONVEYING DEVICE April 7, 1942. MAURER 2,278,552

Original Filed Dec. 15, 1939 2 Sheets-Sheet 2 \NVENTOR GOTTFRIED MAURER Patented Apr. 7, 1942 1 CONVEYING DEVICE Gottfried Maui-er, Zurich, Switzerland, assignor to the firm A. Miiller & Cie. Maschinenfabrik und Eisengiesserei Aktiengesellschaft, Brugg, Switzerland, a joint-stock company of Switzerland I Original application December 13, 1939, Serial No. 309,099. Divided and this application Sep- 1 tember 9, 1940, Serial No. 356,090. In Switzerland November 3, 1939 I (or. 198-219) Claims.

This application is a division of application Ser. No. 309,099 filed December 13, 1939, and relates to a conveying device comprising opposed groups of bars moving forward andbackward and toward and away from one another thereby gripping and carrying forward the goods to be conveyed. It is preferably used for working and dressing wood-pieces, e. g. for treating plywoodplates and veneers.

An object of the invention is to provide suitable driving means connecting the supporting means of the opposed groups of bars and moving the opposed groups toward and away from each other and to control the operation of the driving means 83 (on the left side in Fig. 3) have V-shaped guide faces. Between the standards I0 two con- Veying beds are arranged, which can be displaced in. a vertical directionwith regard to each other by means of spindles 80. The lower bed consists of two groups of bars 84, 85 and the upper bed of two groups of bars 86, 81. The bars of each group of the upper and lower bed are disposed in such a wayv that each bar of a group lies between two bars 'of the other group. The bars of eachzgroup are attached to two cross girders, eachlying between the raceways 92 and B3. The bars 84 of the lower bed are secured to the cross girders 88, 89 and the bars by the forward and backward motion of the op- 85 to the girders 90,. 9I. In a like manner the posed groups. bars 80 of the upper bedare mounted on girders In a preferred embodiment these driving means 92, 93 and the bars 81 on girders 94, 95. are right and lefthand threaded spindles. Stops Rollers 95, 91 of the girders engage the raceon the opposed groups of bars strike, in the ways 83, 82 along which the-girders are moved course of the forward and backward motion of to and fro when the cams I6, I! rotate. In order the groups, against crank arms secured to said to allow the groups of bars to be driven by the spindles, thus rotating these latter. cams I6, 11, levers 98, 99. are mounted on the Another object is to provide slides constituting shaft I2 with allowancefor oscillating and are said supporting means, these slides engaging pressed against the cams 71, IS with the aid of guides on the machine frameand having racesprings I00, IOI' respectively. Bolts I04 of bearways on which suitable members, e. g. rollers, ings I02, I03 enter slots of the lower end of the mounted on the groups, run forward and backlevers 98, 99. The bearings I03 are mounted ward. on bars 80 of one group and the bearings I02 Other objects and features will be apparent as on bars 81 of the other group of the upper conthe following description proceeds, reference be- 0 veying bed. ing had to the accompanying drawings, in which Pins I48 and I49 of the outer upper bars en- Fig. 1 is a longitudinal section of an embodigage slots I50, I'5I of plates I52 and I53 atment, taken on line II of tached to the lower outer bars. If, therefore, Fig. 2, which is a plan view; the groups of bars 86, 8! of the upper conveying Fig. 3 is a front view of this embodiment and bed are reciprocatorily moved by means of the Fig. 4 is a section taken on line II of Fig. 2, cams I6, 1! and springs IOI, I00 respectively, on an enlarged scale. these upper groups carry the lower groups along The box-shaped standards 10 are held together with the help of said pins M8, I49 and plates at the bottom by the struts II and at the top I52 and I53. From this it follows that lower by the rods I2 and 13. These standards serve and upper bars 84, (85, 81 respectively) facing to carry a cam shaft I l driven by the gear wheel 15 and provided with two pairs of cams I6, 11 displaced in relation to each other, whose manner of action will be shown later on.

Two vertical guide pieces 78 of the same kind, on which slides I9 move upand downwards, are provided on each of the standards I0. The slides are driven by spindles 80 each with aright handed thread at one end and a left handed thread at the other end. These threads engage those of lateral lugs 8I passing through broad slots provided on the walls of the guide pieces 78. Each of the slides 19 has a horizontal race- way 82, 83 respectively. The race-ways 82 (on the right side in Fig. 3) have plane and the Ways each other move in the same direction at the same time, but the, groups 84, 86 and 85, 81, owing to the mutual position of the cams I6, TI on shaft I4, move in opposite directions to each other. For the purposev of rotating the spindles 89 to and fro at the same angle on each reciprocating movement of the bar groups,.each of the lower cross girders 88, 89, 90, 9| comprises two adjustable stops IIO, II I cooperating on each reciprocating movement with a crank arm II2 secured tothe lower end of the spindles80. Owing to the fact that the ends of each spindle are provided with right and left hand threads, this rotation to and fro causes the upper and lower bars of the same group to recede from of a group, e. g. the bars 85, 81 attached to the, cross-girders 90, 94 and SI, 95, coming fromthe left, have reached the position immediately preceding that where the stops I Io'attached to the 9 I strike against the: corresponding= crank arms II2, they are still' raised-from one.

girders Q0,

another and can receive the goods.- Assoon as these stops IIO strike against the crank levers I I2, which happens simultaneously at both ends of all the cross girders of the, same" group of bars the spindles rotate and the upper and. lower bars in question begin to move toward one another. The goods are not wholly gripped till the end of the spindle-rotation, i. e. till the bars 85 and 8'I'are in their. right .dead center. This dead; center position'is shown in Figures 1 and 3 for the crosst- girders 90, 94 and-9|, 95, i. e;, for the bars 85, 81. Nowrthe bars 85, 87, together with the goods, move to the left, until the stops I I I attached to the girders; 53;. 9| drive the: spindlcs withthe aid of. the corresponding crank arms H2 in the; otherdirection, whereby the bars 85, 81 of thegroup incquestion move away from one another. rotation, thenuppersand lower bars 81 and 85 are in their left dead center-which is shown in Fig. l but for b'arsBB" and of the other group. Now the bars 85, 81 have releasedthe goods and in their open position move to the right, and

approach'one another atthe end of said right hand motion as already explained.

The position of the cams 16,1! inrelation to each other is such'that the second group, consisting, of the bars 84, 86, moves to the right with the bars raised from one another, while the first group with the bars 85, .81 engaging the goods, moves to the left, i. e:, the cams I5, II are displaced 180 in relation to each other (Figs. 1 and 3). In this way the conveying of the goods is effected.

It is understood that alsomore than two bar groups might be provided.

While this embodiment of the invention has been illustrated and described in such detail as to enable any one skilled in the art to practise the invention, nevertheless it is to be understood that the invention is not'to belimited to any of the details disclosed, but, instead, it will be understood that the invention embraces such embodiments of the broad. idea as fallv within the scope of the subjoinedclaims, it being obvious that various changes may-be made Without departing from the spirit of the invention.

What I claim is:

In a conveyingdevice comprising opposed groups of bars, suitable supporting means for said groups, adaptedto move toward and away from one another, suitable operating means for said groups whereby two opposed groups are caused to move forward and backward, and right and lefthandthreaded spindles connecting the supporting means of two opposed groups, said spindles being adapted to be controlled by the forward and backward motion of said two opposed groups and to move said two opposed groups toward and away from each other.

2. Ina conveying devicecomprising opposed groups of bars, a machine-frame, guidepieces on said machine frame, slides-engaging said guide At the: end: of this spindlepieces, raceways on said slides, members on said groups, adapted to run forward and backward on said raceways, suitable operating means for said groups whereby the opposed roups are caused to move-forward and backward, and right and left hand threaded rotatable spindles connecting said slides, said spindles being adapted to be .controlled by the forward and backward motion of opposed groups and to move said groups towardand away from each other.

3; In.a conveying device comprising opposed groups of bars, a machine frame, guide pieces onsaid" machine frame, slides engaging said guide pieces, raceways on said slides, members on said groups, adapted to run forward and backwardon saidraceways, suitable operating meansfor. said groups whereby the opposed groups are caused to move forward and backward, right and left hand threaded spindles connecting said slides, said spindles being adapted to rotate and thus to move saidgroups toward and away from each other, crank arms on said spindles, and stops on said groups, adapted to strike. against said crank arms in course of the forwardandbackward motion of said groups and thus to'rotate said spindles.

4. In a conveying device comprising opposed groups of bars, a machine frame, guide pieces on said machine frame, slides engaging said guide pieces, raceways. on-said slides, rollers on said groups, adapted to run forward and backward on said raceways, suitable operating. means for said groups whereby the. opposed. groups are caused to move. forward andbackward, and right and left hand threadedrotatable spindles connecting said slides, said spindles being adapted to be controlled bythe forward and backward motion of opposedgroups and to. move said groups toward and away fromeach other.

5. In a conveying devicecomprising opposed groups of bars, vazxmachine frame, guide pieces on said machine frame,.slides engaging said guide pieces,.racewayson,saidslides, rollers on said groups, adapted to run forward and backward ,on said raceways, suitable operating means for said groups whereby the opposed groups are caused to move forward and backward, right and left hand threaded spindles connecting said slides, said spindles' being.adaptedto rotate and thus to move said. groups toward and away from each other, crank. arms on said spindles, and stops onsaid groups, adapted .to strike against said crank arms in the course. of the forward and backward motion of.said.groups and thus to rotate said spindles.

6. In a. conveying device comprisingopposed groups of bars, suitable supportingmeans for said groups, adapted tomovev toward and away from one another, a camsdiski adapted to move opposed groups forward-and backward, and suitable driving meansconnecting the supporting means ofopposed groups, said driving means being adapted to be controlled by the forward and backward motion of opposed groups and to more said opposed groups toward. and away from each other.

'7. In aconveying device comprising opposed groups ofbars, suitable supporting means for said groups,. adapted to move toward and away from one another, a cam disk adapted to move opposed groups forward and backward, and right and left hand threaded spindles connecting the supporting means-of two opposed groups, said spindlesbeing. adapted to be controlled by the forwardand backward motion ot'opposed groups- .said slides, said spindles being adapted to be controlled by the forward and backward motion of opposed groups and to move said groups toward and away from each other.

9. In a conveying device comprising two pairs of opposed groups of bars, a machine frame, guide pieces on said machine frame, slides engaging said guide pieces, raceways on said slides, rollers on the groups of each pair, adapted to run forward and backward on said raceways. two rocking levers mounted on said machine frame and each pivotally connected to one group of a pair, two cam disks engaging said rocking levers and being displaced in relation to each other, adapted to move the two pairs of groups forward and backward with a mutual phase displacement, and right and left hand threaded spindles connecting said slides, said spindles being adapted to rotate and thus to move opposed groups toward and away from each other, crank arms on said spindles, and stops on said groups, adapted to strike against said crank arms in the course of the forward and backward motion of said groups and thus to rotate said spindles.

10. In a conveying device comprising opposed groups of bars, the bars lying side by side at a distance from one another which is smaller than the width of each bar, suitable supporting means for said groups, adapted to move toward and away from one another, suitable operating means for said groups whereby two opposed groups are caused to move forward and backward, and right and left hand threaded spindles connecting the supporting means of two opposed groups, said spindles being adapted to be controlled by the forward and backward motion of said two opposed groups and to move said two opposed groups toward and away from each other.

GOTTFRIED MAURER.

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