DE646762C - Machine for wrapping oranges and similar bodies - Google Patents

Description

Machine for wrapping oranges and similar bodies. The invention relates to a machine for wrapping oranges and similar bodies through which the paper blank used for wrapping is placed around the body in the form of a tube and twisted together at the protruding ends on both sides by circumferential pliers will. In known machines for wrapping candies o. The like. In which the protruding hose ends either close to the body or on its outer part held by fixed pliers or bars and the body set in rotation the ends are twisted together only over a short distance close to the Body, so the hose ends are only partially twisted together, so that a reliable, durable wrapping of oranges or the like is not guaranteed is. The same applies to those already proposed for wrapping oranges Machines in which the hose ends are simply twisted together to form a kind of rosette or by plate-like, interlocking jaws only on part of their Length can also be compressed to a kind of rosette without being followed the compressed ends are twisted together.

In contrast, the invention relates to such wrapping machines, at them. the tubular piece of paper around the body to the on both sides protruding ends is twisted together and this after twisting together be wound together again in a spiral and pressed against the body in order to to ensure a clean and durable closure. It's already a similar one acting machine for wrapping cigars known, in which each end of the tubular casing close to the end of the cigar by fixed twisting tongs with one in the longitudinal axis of the cigar the lying opening is compressed and gradually opened by turning the cigar this opening is pulled through and thereby twisted together, wherein the compression of the hose ends only for each. pulled through the drill pliers Part of the ends are made to facilitate pulling through the drill pliers. The twisted together tube ends are then in a direction perpendicular to the cigar longitudinal axis held bent position and twisted together by further rotation of the cigar. Such a twisting together of the hose ends is, however, for wrapping oranges or other bodies of similar size and shape are not suitable, as the There is a risk that, in contrast to elongated objects of smaller size, like cigars, with the immediate gathering and twisting of the much larger ones Hose ends these, especially when they are moistened Conditions, torn «-Earth, because the stress when pulling around the paper blank do such Body with a diameter that is relatively large to its length is considerably larger.

In order to avoid the previous \ acliteile @, there is a new aspect of the invention in the use of two pairs of rakes or similarly acting tools ; en, finite which initially the ends of the tubular paper blank laid around are compressed along their entire length along the longitudinal axis of the hose casing, in connection with two pairs of rotating drill pliers, of which the first pair then twist the compressed ends of the paper blank together while the second pair then the twisted ends spirally winds together and against the Body pressing. By this only in its entirety the subject matter of the invention forming arrangement made substantial progress is first of all that by compressing the Hose ends along their entire length along the longitudinal axis of the hose casing as well for bodies of such size and shape as oranges and the like, the correspondingly large ones Hose ends already compressed axially and presented to the drill pliers aligned so that they can now be twisted together more regularly, safely and gently Way without exerting a harmful pull on the hose ends and thus without the risk of tearing the shell, even if it is out is made of less resistant material, such as dampened tissue paper. Execution the subsequent spiral coiling and pressing of the hose ends then continued to be guaranteed against the body by a second pair of twisting pliers with a simple and reliable way of working, a particularly effective and lasting one Closure of the envelope.

A machine according to the invention is on the drawings in one Embodiment illustrated, Fig. I shows the 'machine in a longitudinal view; Figures 2 and 3 show parts of the machine in front view; Figures 4 and 5 show a pair of drill pliers in a longitudinal section and in a front view; Fig. 6 and; demonstrate another pair of drill pliers in longitudinal and front view; Figure 8 shows the pair of drill pliers of the latter type in the working position and Fig. 9 shows one of these pliers after they have been made Zusaininemvinden.

The individual bodies to be wrapped i roll, for example, on one sloping downward channel 2 of any type in .the machine, namely on a base 3, roughly from above a swing-out brake arm 4 the body holds in place. Two mutually movable and jointly between the base 3 and the feed device of the 'machine movable grippers 5 and 6 are used to each on the base 3 captured body zii and into the feed device the actual wrapping machine. The two grippers and 6 are useful designed as wooden blocks with cavities on their faces; ' and 6 ' are provided and the shape of a truncated cone in such a cross-section exhibit. that the diameter at its outer ends is about your diameter of the corresponds to the body to be wrapped or extends slightly beyond it.

The grippers 3 and 6 are in the present case by bolts; and 8 in storage rods 9 and io of levers 11, 12 guided longitudinally displaceable, with around the bolts 7, 8 coiled springs 13, i4 a resilient gripping of the individual Ensure the body to be wrapped by the grippers 5 and 6. The levers i 1, 12 are according to Fig. 3 with their bearing bushes 15, 16 longitudinally displaceable on a shaft 17 and secured against rotation by a wedge 18 (Fig. I). The bearing bushes 15, 16 are provided with scenes 19, 20, in which sliding blocks 21, 22 of levers 23, 24 intervene. The levers 23, 24 are attached to bolts 25, 26, with on the bolt 25 a double-armed lever 27 is finely attached to a toothed segment 28, which engages in a toothed segment 29 fastened on the bolt 26. By attacking a drive rod, not shown, to a bolt 3o of the lever 27 by upward and downward movement in the direction of the arrow (Fig.3) Grippers 5, 6 moved from one another and towards one another in a straight plane.

In order to give the grippers a common pivoting movement, a lever 31 (FIGS. 1 and 3) is also fixedly connected to the shaft 17, on which a link 32 engages. This is connected to a drive lever 33 which can swing about a bolt 34. The lever 33 rests by means of a roller 35 against a lifting disc arranged on the main shaft 40, which causes the grippers to move from their outer gripping position, shown in Fig be swiveled outwards again.

On the levers i i, 12 levers 41, 42 are articulated around pins 43, 44, which carry pressure plates 45, 46 at their upper ends, which are under the action of springs 95 against the circumference of the two grippers 5, 6 can apply. Leadership roles 47, 48 at the upper ends of the levers 44 42 are used by striking against a Guide rail 5o the levers 41, .42 against the springs 95 in the illustrated in Fig. I To hold position, while at the lower end of this lever attached rollers 51, 52 short before reaching the inner position of the lever i i, 12 against a stop rail 53 meet, whereby the clamping action of the plates 45, 46 with the circumference of the gripper 5, 6 is repealed.

In the present case, a feed device serves as a feed device gradually moving shaft 6o attached using a known gearbox Turntable 61, which on its circumference with a number of pairs of grippers, for example six, of which only two pairs are shown in Fig. i. These consist of the gripper jaws 65, 66, which are arranged on the turntable 61 Bolts 67, 68 rotatably mounted and by means of the toothed segments 69, 7o with one another in this way are coupled so that they can swing out and in together. A tension spring 71 endeavors to keep the pairs of grippers in their inner position. On the bolt 68 a lever 72 is attached, which by means of a roller 73 by a on the Shaft 6o swingably arranged cam piece 74 can be moved in such a way that thereby the pair of grippers opens. The pairs of grippers 65, 66 have incisions 75, 76 and are also made of an elastic and resilient fabric (fabric) Cover 77, 78 cased.

The intended for the wrapping of the individual body paper is in the form of a paper web 8o from a supply roll 81 through a z. B. withdrawn in a known manner from two conveyor rollers 82, 83 existing conveyor. The lower driven conveyor rail 82 is immersed in a liquid, e.g. B. water, filled container 84 and removes liquid as it rotates, which it transfers to .die undersurface of the withdrawn paper web, so that it causes the paper web to become wet with the cooperation of the upper pressure roller 83. An adjustable roller 85 acting against roller 82 can also regulate the strength of the liquid to be applied to the paper web. After being soaked through, the paper web is guided over a longer path over the guide rollers 86, 87 to a feed device consisting, for example, of the rollers 88, 89. In this way, the paper web is given the opportunity to evenly absorb the applied liquid and thereby stretch, whereby on its further course to the point of introduction of the bodies to be wrapped into the feed device of the machine, a pre-drying is achieved to such a degree that the paper the suppleness and flexibility required for the wrapping. The feed device 88, 89 conveys the corresponding paper length a for each wrapping between the guide strips 9o, 9i downwards in front of the insertion point of the body to be wrapped, a movable knife 92 in connection with a fixed counter knife 93 in a known manner, the paper to the respective length cuts off.

In the working position according to Fig. I, the grippers 5, 6 have the the pad 3 resting orange by inward movement (Fig. 3) and are detected now by a corresponding movement of the linkage 34, 32, 33 inward swiveled into the work station I. The paper web is because initially the Lever 44 42 with the pressure plates 45, 46 remain in the position shown in Fig. I, clamped between these press plates against the surface circumference of the grippers 5, 6 and at the same time cut by the cutting device 92, 93 to the appropriate length. The pressing plates 45, 46 now swing further inwards with the grippers 5, 6, until the orange is between the ones on job I and those open Gripper jaws 65, 66 is located, the paper a initially U-shaped around the Orange and with the parts standing apart around the conical surfaces of the grippers 5, 6 laying around. Then the curve piece 74 is along the roller 73 downwards swung and thus releases this role, so that as a result of the train of the spring 71 the pairs of grippers 65, 66 can close and the orange i by means of the elastic Hold the coating 77, 78 in place. Immediately thereafter, one becomes oscillatable about the shaft 6o Folding slider 95 rotated upwards, placing the end protruding downwards d of the wrapping paper up against the front of the orange and the perimeter the gripper 5, 6 um. Immediately before the end of the inward movement of the grippers 5, 6 in the job I are the rollers 51, 52 of the clamping levers 4, 42 against the Hit rail 53 and thereby out of its clamping position picked up "-medal. Immediately after the folding slide g5 goes up, the grippers 5, 6 are through a corresponding movement of the drive device from the orange and your now almost completely formed hose moved outwards, the clamping lever 41, 42 slide along with their rollers 51, 52 on the rail 53, so that a small action is prevented. Then the disk 61 is turned by the switching device Job turned further, with the upper protruding end of the wrapping paper ä 'strokes along the stationary guide rail 96 and over the first folded end a 'is placed. At the same time the grippers 5 and 6 are for the purpose of removal the next Orange 6 has been swung back into its starting position as shown in Fig. i.

At the work station 1I, according to the invention, the open tube ends of the wrapping paper protruding beyond the orange are now first pressed together in a manner known per se onto the center line of the longitudinal axis. For this purpose, 2 angularly designed rake pairs ioo, ioi and 1o2, 103 are used, the individual prongs of which are offset from one another so that they overlap like fingers when they move towards one another. The rake pair ioo, ioi is attached to the levers 1o4., Los, which are mounted by means of the pins 1o6, 107 (Fig. I). On your pin 107 the lever lob is still attached, which is moved by a drive (not shown) in such a way that both levers can be swung in and out via the toothed segments connected to them log, iio. A corresponding movement drive is provided for the pair of rakes 1o2, 103 . When the arithmetic pairs swing inwards into the position (ioo), (ioi) shown in Fig pressed together. This compression is used for the subsequent indentation by the twisting pliers, so that they can grasp the compressed hose parts well.

After completing this work, the pairs of rakes swing outwards again and it is now indexed by turning this wheel 61 to the job III place.

The twisting pliers i 1 5, 116 (Fig. 2), which are known per se, are arranged at this work station, but their legs i 17 and i 18 or 124, 125 are specially designed. According to Figures 4 and 5, both legs 17, 118 have a number of angular prongs r 10 distributed over the length of the legs. 1.2 (- "which, as well as the previously described) unen rake pairs in the closed position according to Fig. 5 overlap like fingers. At the front end, two strips 121, 122 of metal or the like are attached transversely to both pliers legs, which are bent in such a way that they When the pliers are closed, they form a kind of triangle with lateral stop surfaces towards the middle as shown in Fig. 5. Both pliers legs 117, 118 are jointly rotatably mounted on a bolt 127 carried by the axis of rotation 126. Articulated pieces 128, 129 also grip bearing eyes by means of pegs 130, 131 the pliers legs, which on the other hand are rotatably connected to a bushing 134 via the pins 132, 133. A ring 136 engages in the annular groove 135 of the sliding bushing 134 and has pins 137 on both sides which engage with the forked end 138 of the lever 139 The latter is fastened to the bolt i4o according to FIG e rests on shaft 4, o seated cam drum.

The pliers 116 are designed and arranged in the same way, the legs 124, 125 of which are also provided with angular prongs and can jointly pivot in and outward about a pin 148 arranged on the axis of rotation 14.5. For this purpose, joint pieces 43, 144 (Fig. 2), on the one hand, attack the pliers legs and, on the other hand, are connected to a displaceable bush 146 arranged on the axis of rotation 145, in the annular groove 147 of which a ring again engages, with the pin of which an identical drive rod, as described for the pliers 115 is connected.

If the orange has arrived at work station III, move it the two tongs 116 and 117 evenly move out of their open outer position mediated by their drives and longitudinal displacement of the sleeves 134, 146 inwards, at the same time the axes of rotation 126, 14.5 are given a rapid rotation, so that when both clamps gradually close, they rotate simultaneously and little by little the ones that were only roughly compressed by the arithmetic pairs ioo, ioi and 1o2, 103 Detect protruding ends of the hose casing with their prongs as shown in Fig. 5 and at the final closing have so grasped between them that now several times Drilling can be carried out and a string-like structure of the two now Tip emerges. The special design of the front pliers end in Shape of the strips 121, 12.2 in addition, the indentation as far as possible after the center line to lead and dadie in the closed position of the two legs Place your fingers over each other in order to grasp the end of the case securely and even more tightly to squeeze.

Device according to claim 3, characterized in that the pliers legs (I17, 118 and 124, 12.5) at their front end finite transverse to this standing strip (121, 122) are provided which, when the pliers are closed, form a kind of delta with lateral Stop surfaces. to make the indentation as close as possible to the center line.

5. Apparatus according to claim 2, characterized in that the legs (i5o, 151 and 175, 176) of the second pair of forceps (2oo, toi) at their front ends have semicircular pressure surfaces (i54, 155) that interlock when the pliers are closed Circular surfaces used to press the twisted end against the orange form. In the patent specification 646 762 claim 2 is to be deleted on page 5 and in line 117 are the words * 3. Device according to claim 2 "by" 2o machine according to claim 1 "to be replaced .. On page 6 in line 5 the words" 4. contraption according to claim 3 "through" 3. Machine according to claim 2 "and in line 14 the words" 5. Device according to claim 2 "through" 4. Machine according to claim 1 "to be replaced. Furthermore is to be added on page 6 after line 22: "5. Machine according to claim 4, characterized characterized in that the semicircular end faces (1548 155) of the pliers legs provided with thorn-like projections (156, 157) that are bent outwards in opposite directions are that deviated approximately from the center line when closing the pliers legs Grasp the tip of the twisted ends and lead back into the litte ". at to prevent tearing at the bottom of the coil. The pincers then open again and go back to their position.

This is followed by a transfer after four job IV. At this point: oll the twisted ends out of their elongated position are twisted together in a spiral and placed against the outer circumference of the winding. Pliers Zoo are used for this purpose. aoi (Fig. 8), which in a manner similar to the Pliers are driven on the job III.

In Fig. 6, the legs i 50, i51 of one pair of pliers Zoo can jointly pivot a pin i; a connected to the axis of rotation 153 and have semicircular pressure surfaces 154, 155 on their end faces, which, according to Fig. 7, have a circular area in the closed state form. In addition, an outwardly curved spike-like extension 1 56, 157 is arranged on the end faces. The pliers legs 150, 151 also have stops 158, 159, which rest against the end face of a sliding bush 165 by means of the springs 16o, 161 acting on the one hand on the attachments 158, 159 and on the other hand on the sliding bush 165. A ring 167, in turn, engages in the annular groove 166 and is equipped on both sides with pegs 168 into which the fork-shaped end 169 of a drive lever 17o engages. This is fastened to a bolt 171 as shown in FIG. I and is driven in a manner similar to the previously described pliers by a cam disk seated on the shaft 4o. The opposite pliers toi consist in the same way of the pliers legs 175, 176 and otherwise has both the same design and the same drive as described for the first pliers 15o, 151.

When the orange arrives with the two drilled ones to the side Hose ends on job IV are both zoo and toi pincers from their open External position in the position of Fig. 8 moved inwards and through at the same time their shafts 153 and 182 set in a rotating motion, so that initially through the pairs of mandrels 156, 157 (Fig. 7) connected to the forceps, those roughly from the straight line Center line deviating tip detected and returned to the: center, whereupon each pair of pliers closes and grasps the tip ends and at the same time Rotary movement in the position of Fig. 9 is moved inward, so that a spiral Coiling the two lobes and depositing them on the outer surfaces is achieved. In order to the wrapping process is finished.

The pliers cut again and the switching takes place to work station N ', where a similar curve piece 18o as the above-mentioned curve piece 74 is arranged and connected to it by the double lever 181, which can swing back and forth on the shaft 6o is. In the same cycle as the curve piece 74 brushes along the roller 73 and thus closes the pairs of grippers () 5, 66, the curve piece igo also swings past the role of the corresponding pair of grippers on the job V and opens it so that the wrapped orange becomes free and can run into any collecting container via a drainage channel 185. PATENTAL PROBLEMS: i. Machine for wrapping oranges and similar bodies, with which the paper blank used for wrapping is wrapped around the body in the form of a tube and twisted together at the protruding ends on both sides and after being twisted together again in a spiral shape and pressed against the body, characterized by two pairs of rakes (ioo , ioi and tot, 103) or similarly acting tools with which the ends of the tubular paper blank are first pressed together along their entire length along the longitudinal axis of the tubular sleeve, in connection with two pairs of rotating twisting pliers, of which the first pair (115, 116 ) then twist the compressed ends of the paper blank together, while the second pair (200, 201) then spirals the twisted ends and presses them against the body.

2. Apparatus for carrying out the method according to claim i, characterized by two pairs of arithmetic systems known per se (ioo, ioi and 102, 103) for compression of the protruding tubular casing ends on the center line of the casing in Connection with two pairs of drill pliers of a known type, the first of which Pair (i 15, 116) first twist the compressed hose parts together and the second pair (20o, toi) then spirally winds the twisted ends together and presses against the body.

3. Apparatus according to claim 2, characterized in that the legs (117, 118 and 124, 125) of the first pair of drill pliers (115, 116) have a number of have angular prongs (i i9, i 2o) distributed over their loosely,