SU9319A1 - Wrapper paper feeder for packaging machines - Google Patents

Description

The present invention relates to devices for feeding wrapping paper in packaging machines used, for example, for packaging matchboxes.

For the purposes of packaging, wrapping paper is used in the form of a long wide ribbon, wound into coils and cut in the process of feeding piece by piece to form packages. In the usual method of feeding such a wide paper tape by means of rollers, there is the disadvantage that the feeding uniformity is broken and the tape is warped, stretching obliquely B to one side.

The present invention aims to eliminate the uneven feeding of paper in packaging machines by applying a wide slider, which is provided at one end with a gripper, with a device that pulls the paper tape from the reel, and at the other end is another exciting device that carries the cut piece of paper to the place where the item is packaged. :

In FIG. 1 shows a longitudinal section of the proposed device along (AB in FIG. 2); FIG. 2 - view from above; FIG. 3 and 4 are modifications of the proposed fixture.

The above slider 1 (Fig. 1 and 2) consists of an elongated frame, the width of which is greater than the width of the paper tape 2 and which can be moved back and forth in the horizontal direction in the frame of the machine. The slider 1 is set in motion by the swinging arm 3. At the rear end of the frame, across it, in bearings 4, 4 there is a shaft 5, fitted with several fists b, which are pressed by springs 5, wound around the shaft 5, to the paper tape 2 located under them. lying on the board. 7 frame On the other shaft 8, lying in bearings 4, 4 behind shaft 5 and under the action of springs 8, a dog 9 is attached, hooking on the ledge 10 of shaft 5, as a result of which the latter is held in such a turned position that the fists 6 do not touch buoys

mazhnoi tape. When will the zun reach its hindrance | Under the action of the stop 12, the chaos of the pawl 9 releases the shaft 5. The shaft 5 is lifted further by the obliquely upward shoulder 13, which during forward movement of the slide is pressed down by the stationary roller 14 on its way so that the step 10 engages the dog 9. Each of

. The kulaks are provided with a spring of 6%, by means of which they are pressed against the belt 2.

The front end of the slider 1 is arranged like a forceps. The lower lip of the latter consists of the frame itself, and the upper lip consists of two mutually reinforced on the trunnions and fitted at the front, on each side, by a projection of the shoulders 15, 15. The spring 16 keeps the shoulder pressed to the frame, as a result of which the edge between They have a paper tape placed under the lateral protrusions 17. On the path of the outer projections 18, there are elevations in the frame, raising the shoulder 15 when the forceps should open. Further, in FIG. Figure 1 shows a reservoir 19 with a paste for covering the tape, whereby during the forward run of the tape, this tank is raised so that the movement of the tape occurs unhindered. The paper is fed as follows: When the ribbon is in the resting position, the paste tank is lowered and pressed against it, as a result of which it is covered with paste.

In addition, the machine has scissors or a cutting device for cutting the paper tape, consisting of the lower fixed blade 20 and the upper movable blade 21. The slats in the frame and the fixed slats 22 form a guide for the paper tape. When the slider is moved backwards, the clamping fists are lifted by the dog 9, so that they do not touch the paper ribbon, when the slider reaches

of its rear marginal position, the dog 9 is disengaged by the action of the stop 12, the fists b turn down to the belt and clamp the latter. At the same time, the tongs 1-15 close, seizing the front end of the piece cut from the paper tape. Then the slider 1 is moved forward, as a result of which the tape is unwound from the roll 23 and fed forward, and the cut off front piece of the tape is moved forward by forceps 1-15 to the mashinka where the packaging is made. Before the slider 1 reaches the end of the forward stroke, the shoulder 13 meets the stop 14, as a result of which the fists are lifted from the paper tape and remain raised in position, as the pawl 9 grabs the ledge 10. Next, the slider moves another certain length forward, as a result Tweezers 1-15 bring the cut piece of paper finally to the packaging space and then unfold. When the slider finishes moving forward, the paste reservoir is lowered and covered with tape with a paste that is cut off with scissors. The slider then moves back and, as mentioned above, passes under the ribbon without pressing it. When the slider is approaching the k rear position, the shoulders 15 are raised, whereby the front end of the strap is pinched and clamped, and the reservoir t is lifted with paste and upper scissors blade again. When the slider reaches the end of the reverse, the dog 9 disengages; after that, the slider moves forward again and a new movement of the strip occurs. The tape is grabbed at several points so that it is evenly stretched and so that it does not bulge or twist. The pressing fixture 24 (Fig. 1) does not allow the return movement of the tape;

FIG. 3 and 4 depict a modification of the proposed fixture. Board 7, with bearings 4 fixed to it, is placed in frame 1, in which it can move forward and backward somewhat. At each end of the shaft 5, an upwardly directed shoulder 26, provided with a rod 27, which can slide in the direction of movement of the frame 1 attached to the last support post 28 is screwed. Screwed nuts 29 Limit the movement of the rod 27 in the support stand forward and backward. When frame 1 moves forward, board 7, due to friction in grooves 22 and fixed bars 22, is carried by rods 27, which rotate shoulders 26 and shaft 5, and the fists attached to the last b click on the paper tape and carry thus last in a joint movement. When the frame is moved. back, the shoulders 26, due to the pressure exerted by the supports 28 on the rods 27, rise and the fists 6 move away from the paper tape. That jjte action would also be achieved if the supports 28 were behind the shaft 5, and the rods 27 were directed backwards. Instead of several pushing knuckles, it is also possible to use only ONE wide pushing member with a somewhat elastic base, so that elastic pressure is applied to the paper tape.

The subject of the patent.

1. A device for feeding wrapping paper in packaging machines, characterized by the use of slider 1 (Fig. 1, 2), equipped with two clamping arrangements, of which the first one, which serves to shrink the paper tape from the reel, consists of fists 6 pressed by springs to board 7, lifted at the end of the forward stroke of the slide with a roller 14, pressed onto shoulder 13 and held in this position by the pawl 9 releasing them again at the end of the reverse of the slide under the action of the stop 12 on the tail L of the pawl, and second, the fixture slu aschee for feeding cut with scissors 20, 21 tape portion is pressed by the arms of the springs 15, 17 provided with projections 18 with which pripodnimayuts shoulders at the end of each stroke of the slider.

2. Alteration of the fixture described in claim 1, characterized in that the pins 27 (Fig. 3g and 4) with nuts 29 resting at the end of each stroke of the ram into the stand of the rack 28, used for clamping and raising the fists 6, with the board 7 installed on the slide in a mobile way and is delayed in its movement by friction on the fixed bars E to the patent of In-tsev V. A.

DLrO .JrdF

, te :: S9; F: -i -ri.,

l-h.,.

fig

ф г5 E. Johnson and К. А. Vass. 9319.