RU2306244C1 - Labeling device - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention relates to devices for application of labels onto horizontally placed cylindrical vessels. Proposed device contains shaft for feeding tape from roll carrying self-sticking labels, drive shaft mechanically coupled with tape receiving shaft after removal of labels and distributed deflecting rollers and also dispenser whose two deflecting rollers form acute angle of tape bent on distributing plate placed in between, all these devices being installed in parallel of vertical panel. Feed shaft is furnished with friction brake and compensating spring-loaded lever which carries deflecting roller, and tape pressing mechanism adjoins drive shaft. Dispenser is made detachable in form of rod carrying label detector and is furnished with axle to be fitted in panel socket. Deflecting roller of self-contained compensating lever is arranged inside loop of tape formed by pair of additional guide rollers secured on panel before dispenser deflecting tape with labels whose roller is installed stationary. Roller deflecting tape after removal of labels is mounted for angular displacement. Friction brake of hollow feed shaft is made in form of cup in end face stop longitudinally displaced relative to central rod secured on panel, and mechanism pressing tape to drive shaft engages with drive through switch.

EFFECT: improved functional reliability and simplified design of labeling machine.

4 cl, 4 dwg

Description

The invention relates to a device for rolling labels on cylindrical vessels installed in a horizontal position.

The prior art is characterized by a labeling machine according to the patent US 5674350, B44C 1/165, 1997, which comprises a roll holder mounted on a common frame with a tape carrying piece self-adhesive labels sequentially attached to the backing tape, the drive of the reel of the label-free tape tape drive mechanism, including a drive shaft and bypass rollers of a friction continuously variable transmission, as well as a plate for separating labels on a conveyor transporting them to the product horizontally mounted on the support rollers rotating mechanism.

The shaft of the traction pulley of the conveyor belt of labels removed from the substrate is connected by a belt to the rubberized shaft of the bypass roller of the tape drive mechanism.

The label tape from the friction drive of the bypass rollers goes around the end of the label separation plate and pinches in the reel of the label-free ribbon.

Support rollers of a separate rack are adjacent to the free end of the endless label conveyor for horizontal basing and rotation of the processed cylindrical product.

These support rollers are kinematically connected with the drive of their rotation, placed in the rack. An adjustable clamping lever with a contact roller mounted on the frame of the machine is located above the support rollers.

Labels are individually applied from the conveyor to the cylindrical surface of the replaced products in automatic mode, however, the operator manually controls the cycle of work by turning off the drive of the tape drive mechanism and the rotation of the reeling drum. In this case, the support rollers based on the workpiece rotate independently.

The disadvantage of the described labeling machine is the complexity and cumbersome design, which are determined by the presence of an additional interoperational conveyor for separated piece labels, as well as autonomous rotation drives of the support rollers of the workpiece and the tape reel, the variable linear speed of which must be differentiated for a constant tape feed. This significantly increases the consumer value of the machine.

In addition, the quality of applying labels to cylindrical objects is unsatisfactory due to their arbitrary orientation on the conveyor during free fall after separation from the tape on the plate, and also due to the subjective factor of manual stop of the drive after applying a piece of label on the surface of the product, when two inertia can be applied labels with partial overlap or skew labels, folding, etc. when the drive stops prematurely.

The kinematically connected with the tape drive technological conveyor for supplying piece labels installed between the belt reel having independent rotation drives and the supporting rollers of the workpiece placed in a separate rack compensate for the inevitable mismatch of linear speeds caused by the variable diameter of the tape roll on the pull reel, but this is additional load on the drive and doubles the length of the machine.

The noted disadvantages are eliminated in the compact device for applying labels according to the patent US 5011561, B32B 31/00, 1991, which is selected as the closest analogue in terms of the number of matching features.

The known device includes mounted on a vertical panel parallel to each other drive shaft, equipped with a clamping mechanism and a kinematically infinite belt, connected to the tape receiving shaft, and the feed shaft from the tape roll, bearing labels, as well as deflecting rollers distributed between them.

A distribution plate is mounted on the panel, placed between two deflecting rollers to form an acute angle of inflection of the substrate tape, which together make up the dispenser of the device, which individually issues self-adhesive labels that autonomously move to the horizontally located conveyor; separated from the reversibly reoriented kink on the substrate plate.

The dispenser roller, which rejects the tape with the labels, is mounted on the lever of the mechanism of frictional braking of the tape feed shaft from the roll. This lever-spring mechanism is a kind of pantograph, the brake shoe of which is adjacent to the rim of the coil on which the roll is mounted.

The ratio of the stiffness of the springs, the arms of the levers and the places of their hinge connection provides a certain sequence of turns and spatial movements, as a result of which the locking shoe is diverted from the coil. This ensures a smooth feed of the tape first from the rotation of the lever carrying the deflecting roller of the dispenser, and then, after the stopper has been retracted by the second lever, directly from the roll, without jerking.

A disadvantage of the known device is the unsatisfactory quality of applying the labels due to the spatial mobility of the dispenser roller, deflecting the tape with the labels on the distribution strip, since the angles of the bend of the tape and the vanishing of the labels change, which causes distortions and folding due to various spatial and temporal conditions of the label meeting with processed items.

In addition, when scanning the tape feed to the distribution plate, it is difficult to automatically control the availability of labels to synchronize the supply of objects with the cyclic rotation of the roll.

The frictional braking mechanism is bulky, structurally complex and time-consuming to adjust and adjust, which require special qualifications and skills of the operator.

The problem to which the present invention is directed is to increase the functional reliability of the installation and expand its technological capabilities while simplifying the design and commissioning.

The required technical result is achieved by the fact that in the known device for applying labels containing parallel to the vertical panel the feed shaft from a roll of tape carrying self-adhesive labels, a drive shaft kinematically connected to the tape receiving shaft after removing the labels, and distributed deflecting rollers, as well as dispenser, two deflecting rollers of which form an acute angle of inflection of the tape on the distribution plate placed between them, while the feed shaft is equipped with a friction brake and spring-loaded lever, on which the deflecting roller is mounted, and the belt pressing mechanism is adjacent to the drive shaft, according to the invention, the dispenser is removable in the form of a rod carrying a label presence sensor and is equipped with an axis that is installed in the panel socket, the deflecting roller of the self-contained compensating lever is placed inside the loop tape, formed by a pair of additional bypass rollers mounted on the panel in front of the dispenser, the deflecting tape with labels the roller of which is fixedly mounted, and the roller deflecting the tape after removing the labels, it is mounted with the possibility of angular movements, the friction brake of the hollow feed shaft being a cuff in the end stop longitudinally moved relative to the central shaft fixed on the panel, and the mechanism for pressing the tape to the drive shaft through the switch interacts with the drive.

Developing the claimed essence of the difference lies in the fact that the axis of the deflecting tape after removing the labels of the dispenser roller is installed in the longitudinal groove of the bracket, which is connected through the adjustment screw, and the slot sensor for the presence of labels is installed on the dispenser bar with the possibility of longitudinal positioning, while to the installation axis of the dispenser adjoins a rotary elastic brush.

Distinctive features ensured high quality labeling, which is identically ensured by the constructive implementation of the functional elements of the machine and their automatic interaction.

The proposed design of a universal labeling machine is compact and has a transformable removable dispenser, which allows you to place the device in the cramped dimensions of the production room.

Making the dispenser removable in the form of a rod equipped with an axis that is installed in the panel socket allows you to vary the layout of the device, adapting it to the structure of the automatic line.

The rod, equipped with a mounting axis, provides the possibility of spatially orienting the dispenser relative to the carrier panel to adjoin its distribution plate to the conveyor belt, forced to be installed in the production room at different angles to the labeling device.

The dispenser bar is additionally used as a rocky track means for positioning a carriage carrying a label monitoring sensor on a parallel moving belt.

Placing the deflecting roller of the autonomous spring-loaded lever between the bypass rollers additionally installed on the panel in front of the dispenser made it possible to form a tape reserve loop, which ensures smooth, jerky, tape feeding during cyclic starts of the drive shaft, before the inertial rotation of the roll on the feed shaft begins.

The stationary placement of the deflecting rollers of the dispenser relative to the distribution plate gives the invariance of the angle of inflection of the tape for identical conditions for the descent of the label on the same product.

The constant location of the dispenser roller, deflecting the tape with labels, provides a constant path of the tape relative to the rod, which is necessary for non-contact control of the presence of labels with automatic control of the device operation cycle.

The same purpose is served by an elastic brush, which presses the tape against the mounting axis for rectilinear movement along the dispenser bar.

Adjusting the angular position of the axis of rotation of the dispenser roll deflecting the label-free tape relative to the distribution plate makes it possible to compensate for the inevitable accumulated misalignment of the tape stretched in the mechanisms of the device for orienting the removable labels on the objects fed under the distribution plate. This ensures the necessary quality of labeling and presentation of the finished product.

The friction brake of the hollow feed shaft in the form of a cuff in the end stop, longitudinally moved relative to the central shaft fixed on the panel, is the simplest and most reliable during automatic operation, informs the device about its compactness, which reduces the overall dimensions of the machine.

In addition, the central shaft of the friction brake additionally serves as the axis of independent rotations of the compensation arm for smooth belt feed.

The interconnection of the belt clamp mechanism with the drive shaft contributes to the safety of the device maintenance, since when filling the tape into the broaching device, the electric drive is automatically blocked by the switch that is closed when the clamp cam is rotated.

The installation of the axis of the deflecting tape after removing the labels of the dispenser roller in the longitudinal groove of the bracket, with which the axis is connected through the adjustment screw, allows the operator to simply, organoleptically and quickly set the alignment of the label with the object for the required quality of the finished product.

The longitudinal positioning of the slit sensor on the dispenser bar extends the technological possibilities for using labels of different geometries and provides high accuracy of indirect control of the automatic cycle of the device by controlling the gap between the labels.

Therefore, each essential feature is necessary, and their combination in a stable relationship is sufficient to achieve a novelty of quality that is not inherent in the signs of disunity, that is, the technical problem in the invention is solved not by the sum of the effects, but by a new super-effect of the sum of the attributes.

A comparative analysis of the proposed technical solution with identified analogues of the prior art, from which the invention does not explicitly follow for a specialist in mechanical engineering, and taking into account the possibility of industrial manufacturing of a labeling machine, we can conclude that the patentability criteria are met.

The invention is illustrated by the drawing, which has a purely illustrative purpose and does not limit the scope of the claims of the totality of the essential features of the formula.

The drawing shows:

figure 1 - kinematic diagram of the device;

figure 2 is a section along aa in figure 1;

figure 3 is a view In figure 1;

figure 4 - section CC in figure 3.

The proposed labeling device contains sequentially distributed on the vertical panel 1 parallel to each other the feed shaft 2 from the roll 3 of the tape 4, bearing self-adhesive labels 5, the drive shaft 6, kinematically connected by a belt 7 to the shaft 8 of the tape 4 after removing the labels 5, and installed between them to form the trajectory of the tape 4 a pair of bypass rollers 9, 10, as well as deflecting rollers 11, 12, 13.

A removable (removable) dispenser 15 is mounted in the socket of the panel 1 by means of the mounting axis 14, made in the form of a rod 16 supporting the carriage 17 with a slot sensor 18 for the presence of labels 5 and an arm 19 with a distribution plate 20, near which the deflecting rollers 21 and 22 are located, forming an acute angle of inflection of the tape 4 on the distribution plate 20. A feature of the dispenser 15 is that the roller 21 deflecting the tape 4 with labels 5 on the plate 20 is fixed on the bracket 19, and the roller 22 deflecting the tape 4 after removing the labels 5, see mounted in a rack 19 with the possibility of angular movements.

The feed shaft 2 carrying the roll 3 (FIG. 2) is hollow and coaxially mounted on the central shaft 23, cantilevered on the carrier panel 1.

The end face of the shaft 2 is in power closure with the end face of the central rod 23 by means of a friction brake, which is an annular collar 24 of elastic material installed in the stop groove 25 and loaded with a nut 26. The pressure of the cuff 24 against the end of the shaft 2 controls the speed of rotation of the roll attached to it 3, and hence the feed tape 4 with labels 5.

From the opposite end to the shaft 2 through the gasket 27 adjoins the sleeve 28, which is independently mounted on the rod 23, on which the compensation lever 29 is mounted.

On the lever 29, connected by a spring 30 to the panel 1 (Fig. 1), a deflecting roller 31 is fixed, by means of which, together with a pair of bypass rollers 9 and 10, an autonomous loop of the tape 4 is fed from the rotating roll 3.

To the rubberized drive shaft 6 is adjacent a corrugated metal roller 32 of the clamping mechanism. The roller 32 is mounted on a lever 33, which is forcibly rotated to press the tape 4 against the drive shaft 6 from the handle 34 by the cam 35. In the position withdrawn from the lever 33, when the operator tucks the tape 4, the cam 35 interacts with the switch 36, electrically connected to the drive (conditionally not shown) and disables it.

To regulate the tension of the belt 7 between the drive shaft 6 and the shaft 8 of the receiving tape 4, an eccentric 37 is installed.

The roller 22 of the dispenser 15 is mounted with the possibility of angular rotation relative to the bracket 19 (figure 4), which is realized by placing its axis 38 in the longitudinal groove 39 during kinematic closure with the bracket 19 by means of an adjusting screw 40.

The ability to rotate the dispenser 15 through the axis 14 relative to the panel 1 allows you to adapt the device with an adjacent conveyor for the supply of processed items of different sizes in limited production rooms. In this case, the spatial position of the dispenser 15 changes, but the interconnection of its functional elements with the deflecting rollers 10 and 11 of the panel 1 remains unchanged.

The working angular position of the roller 22 relative to the longitudinal groove 39 is fixed by clamping its axis 38 to the bracket 19 (Fig.3) with a locking screw 41.

The panel 1 has a rotatable elastic brush 42 adjacent to the mounting axis 14 of the dispenser 15.

The proposed device for automatically applying labels from an endless belt to piece items mounted horizontally on a feed conveyor equipped with a mechanism for their rotation, a sensor for the presence of objects under the dispenser dispenser plate, a device for packing labels, etc., operates as part of a production line in synchronization with the operation of its structural elements in a single cycle.

The device operates as follows.

With the allotted cam 35 (figure 1), which closes the switch 36, de-energizing the electric motor of the drive, the tape 4 from the roll 3, laid along the path of movement in the machine, is tucked onto the receiving shaft 8. Then, by turning the cam 35 to the operating position, the roller 32 is fed fully into the drive shaft 6, clamping the tape 4 placed between them.

When turning on the shaft rotation drive 6, the tape 4 is fed, and at the beginning, when the pulling force is not enough to rotate the inertia shaft 2 with the roll 3 fixed, the tape 4 with labels 5 is consumed in the dispenser 15 from the loop stock around the roller 31 of the compensation lever 29, which independently rotates on the sleeve 28 (figure 2), stretching the spring 30.

After that, the shaft 2 begins to rotate and from it the tape 4 is fed to the dispenser 15. Under the action of the elastic forces of the spring 30, the lever 29 with the deflecting roller 31 returns to its original position, forming a loop of the tape 4.

The tape 4 after the bypass roller 10 enters the stationary axis 14 of the dispenser 15, where it is pressed with an elastic brush 42, which excludes its vibrations from a given trajectory when tensioned by the deflecting roller 21 in the area along the rod 16, in particular in the slit of the sensor 18.

On the plate 20, the tape 4 bends sharply (almost 180 degrees), arriving on the roller 22, and the piece label 5 at the same time continues its free linear movement until it encounters an object that is forcibly rotating under the plate 20 at the adjacent conveyor at that time.

Label 5 is attached to the object, mechanically pressed and rolled to its lateral cylindrical surface.

Further, after the roller 22, the tape 4, free of labels 5, sequentially through the rollers 11, 12 and the drive shaft 6 is fed for winding onto the reception shaft 8, where it is rolled up.

The sensor 18 controls the edge of the label 5 (the gap between adjacent labels 5) on the moving belt 4, which is synchronized with the complete descent of the label 5 on the workpiece from the plate 20. The signal from the sensor 18 stops the machine’s drive, which is started automatically by the signal from the presence sensor under the bar 20 (conventionally not shown). Next, the cycle of work is repeated.

To implement indirect control of the duty cycle, the carriage 17 of the dispenser 15 has the possibility of longitudinal movement along the rod 16 when changing the length of the labels 5.

Tests of the prototype of the device have confirmed the expansion of technological capabilities of automatic processing of objects of various sizes when applying labels of various sizes, as well as the functional reliability of structural elements and the machine as a whole, which is characterized by compactness and simple adjustment during readjustment.

Claims (4)

1. The device for applying labels, containing parallel to the vertical panel, the feed shaft from a roll of tape carrying self-adhesive labels, a drive shaft kinematically connected to the tape receiving shaft after removing the labels, and distributed deflecting rollers, as well as a dispenser, two deflecting rollers of which form an acute angle of inflection of the tape on the distribution plate placed between them, while the feed shaft is equipped with a friction brake and a compensating spring-loaded lever on which the deflector is mounted th roller, and a belt clamping mechanism adjoins the drive shaft, characterized in that the dispenser is removable in the form of a rod carrying a label presence sensor and is equipped with an axis that is installed in the panel socket, the deflecting roller of the autonomous compensating lever is placed inside the belt loop, formed by a pair of additional bypass rollers mounted on the panel in front of the dispenser, deflecting the tape with labels, the roller of which is fixedly mounted, and the roller deflecting the tape after removing the labels, is mounted with the possibility of angular changes joints, moreover, the friction brake of the hollow feed shaft is a cuff in the end stop, longitudinally displaced relative to the central shaft fixed on the panel, and the mechanism for clamping the tape to the drive shaft through the commutator interacts with the drive. 2. The device according to claim 1, characterized in that the axis of the deflecting tape after removing the labels of the dispenser roller is installed in the longitudinal groove of the bracket, which is connected through an adjustment screw. 3. The device according to claim 1, characterized in that the slotted sensor for the presence of labels mounted on the bar of the dispenser with the possibility of longitudinal positioning. 4. The device according to any of the above items, characterized in that a rotary elastic brush adjoins the mounting axis of the dispenser.

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