JPS6139222B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus for printing, discharging and applying self-adhesive labels adhered to a carrier tape, which comprises a conveying device and a fixedly supported label at both ends. The carrier tape is moved stepwise by the conveying device around a discharge edge consisting of a plurality of small rolling elements rotatably mounted on a shaft, and the carrier tape is self-adhesive at the discharge edge. The present invention relates to a type in which the adhesive label is peeled off from the carrier tape to reach the label release position.

A device having the above type is disclosed in the United States Patent No.
It is known from specification No. 3954545. In this known device, the label is brought into its release position by first pulling the hand lever and then releasing it again. The label on the carrier tape is printed inside the machine, for example with a price tag, article number or the like, while the lever is being pulled, and when the lever is released the carrier tape is picked up by the transport device. label 1
It is moved around the discharge edge by a section corresponding to the length of the sheet. As the carrier tape is pulled around the ejection edge, the label is peeled off and reaches the ejection position below the pressure roller. The return action of the lever to its starting position is effected by the action of a spring, the spring force of which must be strong enough to enable transport of the carrier tape. In particular, this spring force must be sufficient to overcome the frictional forces that occur when the carrier tape is pulled around the discharge edge. In this known device, a fixed shaft with small rolling elements is used as the ejection edge, whereby a small There is only friction between the inner surface of the rolling element and the outer peripheral surface of the shaft. In order for the label to be able to be smoothly separated from the carrier tape at the release edge, the release edge must be designed as an edge that is as sharp as possible. In order to meet this need with the special shape of the ejection edge mentioned above, the outer circumference of the small rolling element should be made as small as possible. However, since this requires that the small rolling elements be supported on correspondingly thin shafts, there is a risk that said shafts will deflect under the action of the tensile forces occurring on the carrier tape. Such deflection places a strong load on the edge of the carrier tape, which may eventually tear the carrier tape. If such tearing occurs, the carrier tape has to be passed through the machine again, resulting in an inconvenient waste of time.
Naturally, the wider the label for which the device is to be used, the greater the risk of deflection mentioned above.

If the outer circumference of the small rolling elements were the same, the above drawbacks could be eliminated by using a shaft with a larger diameter, but as the shaft diameter increases,
The frictional moment relative to the tensile force used for conveying the carrier tape is also made stronger.
If the outer circumference of a given small rolling element is the same, the effect of the frictional moment on the tensile force becomes smaller as the shaft diameter becomes smaller.

Even if a shaft of larger diameter is used, the above-mentioned disadvantages still cannot be eliminated, since this prevents the smooth release of the label from the carrier tape.

The object of the invention is to improve a device of the type mentioned at the outset so that it is possible to use small rolling elements of small diameter in order to obtain a sharp ejection edge, regardless of the width of the label, and yet still First, it is an object of the present invention to provide a device in which the effect of frictional moment between a small rolling element and a shaft can be suppressed to a slight extent.

According to the present invention, both ends of a shaft holding a plurality of small rolling elements are held by two arms spaced apart from each other and connected by a discharge edge holder, and At least one support projection is arranged on the discharge edge holder between the ends of the shaft as a support for the shaft, acting against the force exerted on the shaft by the carrier tape. This problem has been solved in that the size of the support projection in question within the tape winding area is smaller than the diameter of the small rolling element.

The support type according to the invention for the shaft holding the small rolling elements allows the shaft to be made extremely thin in proportion to the diameter of the small rolling elements without the shaft being deflected under the influence of the tensile force acting on the carrier tape. It is possible to design. If necessary, a plurality of supports can be arranged along the axis, so that the small axis diameter described above is equally applicable for any label width. Since in any case the carrier tape at the discharge edge is loaded uniformly over its entire width,
There can be no risk of tearing the carrier tape. Furthermore, by using a thin shaft, the outer circumference of the small rolling element is also kept small, and thus the radius of curvature of the discharge edge is kept small, so that the tape feed due to the frictional moment between the small rolling element and the shaft is kept small. It is ensured that the self-adhesive label can be easily removed from the carrier tape without any interference with the carrier tape.

Advantageous embodiments of the invention are defined in the second patent claim.
As described in Sections to Sections 3.

The invention will now be explained with reference to the illustrated embodiment.

The labeling machine shown in FIG. 1 has a housing 1 with a grip 2. The labeling machine shown in FIG. Casing 1
On the upper side, a receiver 3 is provided for receiving a stock roll 4 from a carrier tape 5 and a self-adhesive label 6 attached to the tape. The carrier tape 5 with said self-adhesive label 6 extends downwardly through the machine, emerging from the stock roll 4;
The discharge edge 7 is then reached in the forward direction, where only the carrier tape 5 undergoes a sharp change of direction and extends further through the conveying device 8 to the rear end of the casing 1 . The above-mentioned route is shown in FIG. 1 by a dash-dotted line. A hand lever 9 is arranged on the underside of the grip 2, which is drawn towards the grip 2 against the action of a spring 10. When the hand lever 9 is pulled, the printing device 11 moves to the printing table 12.
The label is then swiveled towards the printer, and the label that is just located on the print table is printed. At the same time, the conveying device 8 moves forward by the length of one label, that is, to the left as viewed in the drawing of FIG. During this forward movement, the conveying device 8 is not engaged with the carrier tape 5. When the above-mentioned attraction is released, the hand lever 9 is returned to its starting position by means of the spring 10. As a result, the printing device 11 is also guided back to the predetermined starting position, and the transport device 5 is moved backwards by the length of one label, with the mesh between the transport device and the carrier tape being adjusted. Therefore, the carrier tape is also labeled 1.
It is pulled backwards by the length of the sheet. During the aforementioned movement of the carrier tape, the just printed self-adhesive label 6 is peeled off from the carrier tape 5 at the discharge edge 7 and placed in the label discharge position below the pressure roller provided at the front end of the machine. reach In this manner, the self-adhesive label 6 can be affixed to the object by rotation of the pressure roller 13.

FIG. 2 shows a perspective view of the ejection edge holder, which is arranged on the underside of the housing 1 and which also holds the printing table 12 at the same time. As can be seen from the drawing, the discharge edge 7 has a shaft 15 made of steel.
It is made up of a plurality of small plastic rolling elements 14 which are supported on the top. The ends of the shaft 15 are held by two arms 16 which are connected to each other by a discharge edge holder 17. The printing table 12 is also located on this ejection edge holder 17. As can be seen from FIG. 2, the web 17 is formed with a supporting protrusion 18.
8 is in contact with the shaft 15. of the support protrusion 18;
The side facing the shaft 15 is formed so as to partially surround the shaft 15.

The support projection 18 is shown in more detail in FIG. This support projection 18 consists of two axially offset halves 18a and 18b, on both of which the shaft 15 rests. The shape of this support projection 18 has been chosen to facilitate the manufacture of the plastic part forming the discharge edge holder 17. In a plastic part manufactured by injection molding in such a shape, the formation of an undercut part for receiving the shaft 15 is avoided, so that the injection mold can be easily divided.

The above-mentioned support of the shaft 15 prevents the shaft 15 from deflecting even in the case of wide labels, so that the load acting on the carrier tape 5 at the projecting edge 7 is absorbed by the tape. The share will be distributed uniformly over the entire width of the area. There is therefore no risk of the carrier tape tearing due to uneven loading.

In the case of machines used with very wide labels, the ejection edge holder 17 of the ejection edge holder is provided with a plurality of support projections, each of which supports the shaft 1.
It is also possible to support 5.

Based on the above-mentioned method of supporting the shaft 15, it is possible to reduce the diameter of the shaft to 0.6 mm, whatever the label width. As mentioned above, at small shaft diameters it is possible to use fairly small rolling elements without interference due to frictional moments between the rolling elements and the shaft, so that a relatively sharp discharge edge is formed, and the carrier Even at high tape transport speeds, the label can be reliably peeled off at this ejection edge and reach the label ejection position below the pressure roller. In this case, there is no tendency for the label to fold up at the ejection edge. These advantageous properties can be achieved in the dimensions mentioned even when using inexpensive carrier tapes, in which the label is relatively firmly attached to the surface of the carrier tape due to the low silicone loading.

Polyamide has proven to be advantageous as material for the rolling elements 14.

The diameter of the shaft 15 can be further reduced if a plastic material with higher wear resistance than the plastics mentioned above is used as the material for the shaft 15 and the small rolling elements 14. If, for example, tungsten or hardened steel is used for the shaft 15 and ruby is used as the material for the small rolling elements 14, the shaft diameter can be reduced even further than the above-mentioned value of 0.6 mm without any problem. As already mentioned at the beginning, the effect of the frictional moment on the tensile force induced on the carrier tape becomes smaller the smaller the shaft diameter for a given small rolling element outer circumference; It is clear that the abovementioned possibilities for further reducing the diameter are extremely advantageous. If the above-mentioned wear-resistant plastics are used, the shaft diameter can be reduced while maintaining a relatively sharp discharge edge, i.e. while the outer circumference of the rolling elements 14 remains constant, thereby reducing the resistance to tensile forces. The influence of frictional moments can be further reduced.

In order to ensure that the extremely thin shaft 15, made of tungsten or hardened steel, is prevented from deflecting, it has between its ends a supporting projection 18 of the type shown in FIG.
It is supported in multiple layers using

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
1 shows a highly simplified side view of the device according to the invention with part of its side wall removed, FIG. 2 a perspective view of the discharge edge holder, and FIG. This is a greatly enlarged view of one part of Figure 2, showing the support part of the shaft that holds the small rolling element, and Figure 4 shows the part between the support protrusion of the discharge edge holder and the discharge edge holder. 2 shows a partial sectional view with a label carrier tape guided thereon; FIG. DESCRIPTION OF SYMBOLS 1...Casing, 2...Grip, 3...Receptor, 4...Stock roll, 5...Carrier tape, 6...Self-adhesive label, 7...Release edge,
8... Conveyance device, 9... Hand lever, 10...
Spring, 11... Printing device, 12... Printing stand, 13... Pressure roller, 14... Small rolling element,
15... shaft, 16... arm, 17... discharge edge holder, 18, 18a, 18b... support protrusion.

Claims (1)

[Scope of Claims] 1. A device for printing, transporting and pasting self-adhesive labels adhered to a carrier tape, comprising a conveying device and a single shaft fixedly supported at both ends. The carrier tape is moved stepwise by the conveying device around a discharge edge consisting of a plurality of small rolling elements rotatably mounted on the carrier tape, at which the self-adhesive label is attached to the carrier. In the type that is peeled off from the tape and reaches the label release position, a plurality of small rolling elements 1
The ends of the shaft 15 carrying the 4 are held in two arms 16 spaced apart from each other and connected by a discharge edge holder 17;
A discharge edge holder 17 is located between the ends of the shaft 15.
At least one supporting projection 18 is arranged as a support for the shaft 15 which acts against the force exerted on the shaft 15 by the carrier tape 5 and which extends within the tape winding area. For printing, transporting and pasting self-adhesive labels adhered to a carrier tape, characterized in that the dimensions of a particular supporting projection 18 are smaller than the diameter of the small rolling elements 14. equipment. 2. The surface of the supporting protrusion 18 that supports the shaft 15 is
formed so as to partially surround the shaft 15;
An apparatus according to claim 2. 3. The shaft 15 supporting the small rolling element 14 is made of tungsten or hardened steel, the small rolling element 14 is made of ruby, and the shaft 15 is supported at a plurality of locations between its both ends. The device described.