DE2363883A1 - LABELING DEVICE - Google Patents

Description

R. A. JOKES and COMPAHY, INC., Covington / Kentucky - USA Labeling device;

The invention relates to an application device of labels in general and to a device for clamping a label-bearing web during removal a label of this in particular.

A high-speed labeling machine is known, that uses a prepared label dispenser with a remnant of the web of partially pre-cut labels leads. Such a labeling device and such prepared dispensing device are in the United States patent 3,661,625. In this device, the label web is intermittently over an adhesive point where an adhesive is applied to the label. From this point on, the path becomes intermittent guided a removal and landing point at which a reciprocating piston is actuated so that it passes through an opening in a frame and engages the label web, there the partially pre-cut Takes off the label and places it on a support. During the intermittent decrease, there will be a clamp actuated, which attacks the reverse or adhesive side of the label web uid the web opposite the frame

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while the label is removed.

Where the appearance of the labeled product is not particularly critical, the aforementioned clamping device is sufficient. However, it will become more and more important to affix such labels to products that the resulting Packaging is commercially acceptable from an aesthetic standpoint. In particular, it is increasing increasingly desirable for dispensers to apply glue to the outer edges of a label so that all the edge parts of the label adhere well to the product and there are no loose edges that affect the appearance affect the product.

In the device according to US Pat. No. 3,166,625, the clamping device includes a frame in the form of an attachable Labels. This clamping frame grips the adhesive side of the label web and holds it against a Part of the device, especially when the piston swings over the track from the other side.

In order to properly cut and separate the label from its web, the clamping device normally contacts the web very close to the label that is to be removed. When glue is brought to the outside edges of the label, it invariably contacts the clamp and over a period of operation will accumulate on the clamp, staining it as well as other parts of the device. Among other things, this soiling is caused by "string pulling ¹¹ ", whereby threads of adhesive from the labels stick to the clamping device and are pulled through the path in any direction over the device. This situation is made more difficult when the adhesive template adheres so strongly to the label on the guideway overlaps so that the outer edge sticks securely, or as

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Result of a misalignment of the glue application with the label overlapping.

This situation is further aggravated by the slight swinging of the label web, which is a phenomenon of the high speed is. The vibrating web happens to touch the clamping device when properly gripped to the railway according to the time schedule. Premature touching of the clamp by the web and the resulting Contact with the adhesive leads to further undesirable transfer of glue.

These factors lead to excessive build-up of adhesive on the clamping device over prolonged working hours and other parts of the device. This necessarily requires stopping and kneeling and does that whole labeling less effective. The device mentioned also requires a relatively high level of precision Gluing to avoid errors in the adhesive label cover and excessive overlap difficulties

According to a feature of the clamping device for labeling mechanisms according to the invention, a heating device for the portion of the clamping device that contacts the web is provided to prevent excessive adhesive build-up on the To prevent clamping device.

In a preferred form of the device according to the invention the heating device of the clamping device is so arranged that glue to the outer edges of a label by applying overlapping or continuous Glue applications can be applied to a label web.

Contains a preferred embodiment of the invention

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having a clamping device with a plurality of fingers, the heated tips or ends and ia general gegenein _a Direction extend and so a line guide result of the label. The fingers are preferably on a swinging one. Plate and are led to or away from the label web and hold the web and release it in the correct sequence. The fingertips are preferably heated to a temperature range similar to that at which a hot melt adhesive is applied to the labels. Even though the fingertip touches the adhesive on the label web, the adhesive does not build up on the heated fingers.

In the preferred embodiment, the fingertips are connected in rows to an electrical power source . the top parts are ύοώ. Very small cross-section «B © r - high electrical resistance of the tips causes heating at the tip as a result of the application of electrical current.

If these thoughts concern the excessive accumulation of tosl "Wjpnder" lifters on the heaming device, it is 31OgIiCk ₅ a © outer edge gluing by using a consecutive one. Leiaauf application on the label web, which overlaps the labels, © by using a continuous. Le iaaiaftragung on the web to ensure «Both the successive as well as the JT © rtlau £ © a & en E © imaiaftrags can be used by a device for continuous linen application, whereby the costs are reduced, because a © high precision!» © in covering aicht <§2? foxderlieh is «

W @ bji eis, s © lcfe @ s lsSimaibgafeegesmt sit an iateraittiesenden etiquetitabnaJamestell © we combined> d ₉ 1st it was found j that feeia üfeergamg end at the start of the run

Movement into an intermittent movement, in particular the web experiences a phenomenon at high speeds, known as train shock. This shock is severe enough in many cases to pre-cut Prematurely separating labels from the web, which is a highly undesirable property.

To solve this problem, according to a further feature of the invention, in the web between the adhesive application site and the label removal point is formed in a loop, preferably by a flexible strip in the form of an endless band -produced between the point of continuous life and the intermittent one Acceptance point. In a preferred arrangement, pressurized air is supplied from a location in that of the strip surrounding area against the strip in order to bring it into contact with the label web and the Form loop. The strip preferably contacts and prevents the web over a relatively large area that the pressure directly touches the web and inflates it or separates the labels prematurely.

The invention is explained on the basis of exemplary embodiments with the aid of the drawings. In these is:

Figure 1 is a side view of the labeling device according to the invention;

Figure 2 is a front view of the device;

Figure 3 is a front view of a web clamping device;

Figure 4 is a cross-section on line 4-4 of Figure 3;

Figure 5 is a plan view of the label web with a Best that completely surrounds every label;

FIG. 6 shows a plan view of a label web with continuous labels;

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7 the view of another BaIm ₉ which has been modified! »© imanftragUHg"; and

FIG. 8 the view of an electrical device for use nit © iner Bahn & a®n Figure 7 »'

Figure 1 shows the stick device 1o, the clamping device 11 and the device 12 au® S @ M. @ fenfoilden, as well as the adhesive applicator 1J. The clamping device is particularly in Figures 2, 3 and 4 g © s @ IGT _o It comprises a clamping plate 2NC from Isolieraaterial and is provided with an opening 21 of the Eo rm of a label L corresponding to that in Figures 2 and 3 by The dashed-dot line 22 shows "Di® opening 21 is, apart from the fact that it has the shape of the label L, a little larger than the label in order to create a tree for parts that go inwards and attack the web".

The label attackeadea file the healing device contain fingers 23 * ait J® one attacking the label Point or end 24. The fingers 23 consist of a single, electrically conductive part 25 »that in FIG is shown dashed and in a suitable manner the clamping plate 2o is attached. The fingers 23 are clay small cross-section and the conductive parts between the Fingers are large in cross-section.

Are at the respective ends of the part 25 to the terminals 28 and 29, electrical conductors 26 and 27 _t which are connected to a power source. When the power source is activated, a current passes through the conductive part 25. Since the part 25 has parts with a large cross section, its resistance is relatively small a large part

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of part 25 to another current going that the Tips 24 and the fingers become relatively warm. The current is regulated so that it is on your fingertips the. heats up the approximate temperature range at which the adhesive is applied to the label web.

As Figure 3 shows, fingers 23 extend from the conductive one Part 25 beyond the opening in the clamping plate 2o, so that the tips 24 of the fingers the outer line of a label L in the opening 21 result. The tips 24 of the fingers 23 can give a template that something larger than the outline of the actual label edge to accommodate a small misalignment of the label, when this reaches the delivery point.

The clamping plate 2o is attached to the oscillating rod 3o and can be held there by the nuts 31. The rods 3o swing in a temporal relationship to the tips 24 of the fingers 23 with the label web to bring into contact, as Figure 4 shows. In the clamped position, the fingertips 24 clamp the label web against the fixed frame 32 of the device, which has an opening 33, which is generally the outline of the label.

A piston 35 is used for dipping through the label web and for attaching a label from there has a base 36 which is in the form of a label is equivalent to. As FIG. 1 shows, the piston swings in the direction of the double arrow A and passes through the label web through, takes off a label and places it on a support T, e.g. a bottle or another commercial item. The piston and the clamping device are timed in their work that the clamping device engages and holds the web, short

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before the piston engages the label.

Bas loop forming device 12 contains a compressed air pipe 4o, which is connected to a compressed air source. The Bohr 4o has several openings 41, which are directed downwards, such as Figure 1 shows, above the Bohr 4o and next to the path of the Eti-Xettenbahn is a flexible strip or screen 42. In the preferred embodiment, lie the ends of the strip together at 43 on the frame of the device 4, so that the strip results in an endless band, that surrounds the compressed air pipe. However, the strip can also be used in shapes or positions that do not have a are endless tape. With the shape of the endless belt, the flexible strip has no loose end, which is problematic caused if the web should break. Even without a train the strip remains in a circular or elongated position and a web can pass through the device and over the strip be introduced very expediently.

The label web runs from the adhesive application device 13 to the front and then up to the label dispensing point and the clamping device. When compressed air through the drill 4o is applied and exits through the openings 41, it meets the flexible strip 42 and reprints it engages the label web below, resulting in a loop 44 in the web. The blowing force of the compressed air is constant and enough to form a loop in the strip but is easy enough to loop around Resilient to bend up and down to avoid fluctuations in web tension on the loop. These voltage fluctuations are caused by the constant® movement of the glue on one side © of the loop and the intermittiereade Movement of the heat device and the piston looking at the other side.

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The flexible strip 42 is usually slightly wider than the web so that no pressurized air is immediate attacks the railway. While the spell width can approach that of the strip, the compressed air can also be immediate attack an edge of a relatively wide web and cause dragging or other problems.

In front of the flexible strip there are guide members 45 and 46 which engage the strip and create the desired one Form a loop shape. These guides are shown in FIG. 2 but not in FIG. Normally are the guides 45 and 46 on each side of the Label web. In addition, further guides should be in a vertical position behind or, in other words, to the left of Strips 42 can be provided, as shown in FIG. 1, in order to regulate the horizontal course of the loop. It can also be arranged at any point above the strip 42 guide links to any shape of the Obtain working loop 44. Besides the shapes of the loop, the guides try in some places To press the loop directly against the web «The force to form the loop can thus be a combination of the elastic property of the flexible strip and the blowing of compressed air onto the strip.

The glue applicator 13 builds a sticky surface on at least the labels on the web. While the terms "sticky surface", "hot melt adhesive" or "glue" is used here for purposes of illustration, other terms mean a corresponding hot melt However, glue that is heated and then applied to the material is not limited to this. aside from that contain the terms thermo-activated glue, thermo-plastic or other material that can be attached to a web and activated by heat. Also contains

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the term glue with the property that they are not sticking or accumulating on a heated part. That Applicator contains a glue wheel 5 © ait a cylindrical Surface 51 and indentations 52 holding glue. The leash wheel 50 lies above the glue pot 53 so that a part of the wheel runs under the level 54- of the glue, The Glue pot is stranded with a device for heating the lei to a temperature that is attached to the label web can be easily applied. The temperature can be in the range from 148 ° to 171 ° C or equivalent vary depending on the material used.

When turning the Hades 5o in sight of the arrow B emerges it into the glue and picks up some glue. Before attacking of the wheel to the label web, however, the glue on the cylindrical surface 51 is removed by a scraper stripped off, so that when the wheel 5o engages the track there is no glue on the outer 2SyIinderfläche 51, but remains in the recesses 52. The glue wheel is designed so that the recesses 52 the same Shape like the label L or slightly larger. Also, the indentations on the glue wheel 5o arranged so distributed that they correspond to the successive spacing of the labels L in the web. In this way, when the label web has been pulled to the glue wheel 5 °, the depressions serve to build up an adhesive on the labels on the web.

While many types of label webs can be used, only two preferred types are shown in the figures 5 and 6 shown. FIG. 5 shows a label web 6o with a web remnant 61 which results in the labels L. However, the remainder 81 runs around each label L so that the labels do not touch each other.

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You will be under the spell through notches in the web material which remains after the web is partially gated to form the labels. These Notches are usually very small and give the labels very little hold. This leads to to a fragile web that allows the label to separate exposed to a train shock.

FIG. 5 also shows a sequential or web overlap glue application 62, which is shown in full on two labels attached to the left of the web in FIG are. Opening 63 shows that the area from which the Label has been removed «The glue application 62 has overlapped the label and is partially located on the train. The glue is applied to the outer edges of the label L and overlaps them on the remainder of the web correct.

Contains a modified label web 7o, as shown in the figure shows a remnant of the web 71 »d-it is opposite one another Edges of the label. In this path, the labels are attached to each other, i.e. they are attached to each other by theirs Ends connected in such a way that each label is not completely surrounded by a remnant of the web. The labels are held in the track and are connected to one another by notches, as described in connection with FIG has been. The opening 72 shows the area of the web from which the labels are at the removal point of the device have been removed.

The glue application according to FIG. 6 is continuous and runs over all lanes, with both the labels in the lane as well as the rest of the track. To get this glue application, a glue wheel with a continuous cylindrical surface can be used

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that the application is continuous and not intermittent, is like the order 62, which is obtained by the glue wheel 51 according to FIG.

Ee must be observed whether the glue application on the label web continuously, as Figure> shows, or continuously according to Figure 6 is. The movement of the web through the adhesive application point 13 is continuous. At ^ eder Type of application, the adhesive runs over the label and onto the supporting sheet. The recesses 52 in the glue wheel 5o are not produced as precisely as a printed glue application on the correct edge of the label a very small permissible error tolerance, but the depressions 52 can be larger than the label to ensure glue is applied to the outside edge. That way the device can too work well when there is an error in the coverage of the glue application and the label.

The itikettenbahn according to Figure 1 is from the label delivery point withdrawn and moves in sight of the arrow C. Arrows with the same designation show the sighting of the Railway in all drawings.

The label web is guided through the sieve application point 13. The glue wheel 5 © continuously builds one sticky area on the labels L in the web. The web then goes down from the glue wheel and becomes is forced into a loop by the pressure applied to the web a with the flexible strip 42. The stripe is created in the Schleif® by applying! compressed air through the pressure pipe 5 © and the openings 41 «

The compressed air only hits the strip 42 and not directly on the label web. It is established

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has been that with omitted strips 42 and omitted compressed air directly on the web tries the air to remove the partially cut labels from the To blow the web, whereby the load-bearing sink notches tear and the subsequent method of operation contaminates the device. This results in machine downtime and thus unlabelled products.

The use of the strip 42 results in a constant, uniform application of pressure throughout the web to form the loop 44, thereby solving this problem will. In addition, the strip 42 provides a smooth surface for guiding the web in a continuous loop or curve. This is particularly advantageous for railways who carry relatively large labels or where parts of the label edge have straight lines across the web result. When air is applied directly to such webs, they try to bend on these edges and thereby causing the notches to tear and the labels to detach from the web. This bending and The notches are torn out because, apart from the remainder of the web, only what is at the bend on the web Material is in the notches carrying the label.

This structure also has the advantage over a vacuum system made in the US Pat. No. 3,661,625 »that the Railway is never operated directly by the compressed air. With the "vacuum" system, the web can be pulled against the orifice plate by the vacuum and, if so the damper is misaligned or dirty, the web may be distorted.

From the surface forming the loop, the web then goes on to the take-off point and to the clamping device 11,

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as shown in FIG. Upon reaching a given The clamping plate becomes valuable through the acceptance point 2o moved against the label web and the frame 32 so that the fingertips 24 are directly next to the web attack the label and surround it. You fingers press against the web and clamp it against the frame 32 in order to close it there for the subsequent removal process keep.

At this time, the oscillating piston 35 is operated, who goes through the web, picks up a label from the web and places it on the support.

The adhesive on the label is then used to bind the label to the overlay. The piston and the clamping device are then withdrawn and release the remainder of the web, which is then set in the sighting of arrow C. will.

In the preferred embodiment, the web movement through the adhesive application parts is continuous, while that of the web through the inhibition and removal point is intermittent. The formation of the loop 44 and its elasticity due to the property of the compressed air provides sufficient elasticity in the web to take up tension on the loop and support reducing the train shock. This is to reduce label dispensing as a result of this shock alone The adhesive application parts can be intermittent Moving the web serve as in the referenced patent will be shown. In this case, the loop forming device to reduce the web shock due to web sluggishness or small time errors between the adhesive application point and the delivery point.

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An electric current is applied to remove and clamp the fingers 23 and the fingertips 24 placed. This current heats the fingertips 24- to a temperature in the range of 148 to 1? 1 ° C, which is the same as that in which the sieve is applied. While a relatively small amount of hot melted glue is accumulated on the fingertips 24, it will not be built up in a large amount. You problems Clay excess buildup of hiking glue are thus eliminated in this area. A small amount of glue that collects on your fingertips, is maintained at a temperature sufficient to prevent any other adhesive from getting in contact with the Fingers come into contact, sticks and "pulls threads" between the remainder of the web and the clamping device.

As shown in FIG. 4, the fingers 23 are bent towards the web in such a way that they attack it and it against the stand Press il 32 without pressing the upper or lower parts of the plate 20 directly against the web have to. The only parts of the clamping device that engage the web are thus the heated fingertips 24.

Figures 7 and 8 show a further embodiment of the clamping device that is particularly useful there is where no glue needs to be applied to the outside edge of the label. Many label products require not that quality. An application of glue, such as that shown at 8o in FIG. 7, is applied to the label 81 in the web 82 created. There is still the possibility of one there Incorrect registration between glue application and label and the problem of the oscillating web remains. It is therefore desirable use heated fingertips in these areas

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(Figure 8), which in the same way touch or accept a build-up of glue. In this example, the Kleamfinger 83 attack the remainder of the web near the glue application on the labels. The Best of the clamping device contains only a massive unheated clamp part 84. Various types of Leimauftr _a conditions or formations are used by clamping fingers and the 7 and 8 are only examples, showing that heated Kiemrateile are necessary only in the areas in which adhesive could attack or build up. In other areas where this is not possible, a non-heated clamping part 84 is sufficient

The invention provides an improved device for applying labels to products and eliminates the previous troublesome problem of excess traveling adhesive build-up in the clamp and other locations of the device. The clamping device according to the invention enables the use of a variety of adhesive applications overlapping the web on prepared label webs _9, whereby the performance can be increased significantly.

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Claims (1)

Sr-26o77 S.A. JONES and COMPANY, INC., Covington / Kentucky - USA Claims 1. J Apparatus for aniseing labels to a continuous web of label material with one device for heating to apply heat softenable adhesive to the web rocking device for removing each label from the web, with the device engaging the web holding the web in place, while the labels are being removed from the web, characterized in that the web engaging means heated to prevent adhesive from building up. 2. Apparatus according to claim 1, characterized in that the device engaging the web comprises a clamping device (11) with a plurality of heated finger-shaped elements contains. 3 * device according to claim 2, characterized in that the linger (23) contains a small cross-section (24 ·) of electrically conductive material through which .ein to Heating electric current passes through it. 4. Apparatus according to claim 2 and 3, characterized in that that the ends of all fingers (23) immediately surround the area of the label (2). 5o device according to claim 4, characterized in that the fingers are formed out of the edges of an opening in the clamping plate (2o), which are continuous contains electrically conductive part. -18- 409825/0416 6 · Device according to claim. 5? characterized in that each pinger (23) is designed as a U-shaped projection that passes through the legs of the U with the clamping plate (2o) is connected, and that every pinger through the plate only bit is connected to the two immediately adjacent fingers, so that when flowing an electrical Stream from appropriately arranged terminals (26, 27) into the plate (2o), the entire stream in turn through each Pinger flows. 7. A method of clamping a web against a supporting surface, the web comprising a hot melt adhesive which is applied to parts of a side at a certain temperature, characterized in that that the web attacks contacting parts and keeps them at a temperature close to the given temperature. 8. The method according to claim 7, characterized in that the web contains a remainder of the web which has a plurality of labels carries and the adhesive overlaps the labels on the web, and that the remainder of the web to the overflow members in Areas of the remainder immediately nebejü / üen ifCiketten attacks. 4098 25/04 16