EP3936288A1 - Cutter for self-adhesive and self-supporting endless tape labels - Google Patents

Abstract

The invention relates to a cutter for self-adhesive, carrier-free endless tape labels, with a transport roller that can be rotated about an axis of rotation and a knife unit that has a knife carriage that can be moved linearly parallel to the axis of rotation of the transport roller and a cutting knife that is held in a rotationally fixed manner on the knife carriage and is directed in the direction of the transport roller includes, wherein the endless tape labels between the transport roller and the knife unit can be passed. The knife unit comprises a knife holder, which forms a structural unit with the cutting knife, in which the cutting knife protrudes with a fixed projection beyond the knife holder, the structural unit being slidably attached to the knife carriage and a spring device, in particular a compression spring, being provided, which supports the structural unit biased to an extended position.

Description

The invention relates to a cutter (also referred to as a cutter) for self-adhesive, carrier-free endless tape labels, with a transport roller that can be rotated about an axis of rotation and a knife unit that has a knife carriage that can be moved linearly parallel to the axis of rotation of the transport roller and a knife carriage that is non-rotatably held on the knife carriage in the direction comprises a cutting knife directed towards the transport roller, wherein the endless strip labels can be passed between the transport roller and the knife unit. Such a truncator is from the document DE 199 58 274 A1 known.

In order to be able to process labels of this type, which are coated on one side with an adhesive and are also referred to as linerless labels, a cutter or a label printer with a cutter is required, with which the labels are separated from the endless strip. For this purpose, the transport roller of the cutter functions as a counter-holder for the cutting knife according to the document DE 199 58 274 A1 provided with an elastomeric coating into which the cutting knife can penetrate when separating the labels.

The disadvantage here is that the cutting blade successively damages the elastomeric covering and the transport roller wears out as a result. This is particularly disadvantageous because the adhesive-coated side of the labels rests on the transport roller. For trouble-free transport of the endless strip labels, however, it is essential that the surface of the transport roller offers the adhesive no adhesion or only the lowest possible adhesion. This property of the transport roller works, especially with one with a non-stick coating provided transport roller, lost over time due to wear due to the penetration of the cutting knife.

The invention is based on the object of specifying a cutter of the type mentioned at the outset, which also enables trouble-free transport of the endless strip labels over the long term.

This object is achieved by a cutter having the features of independent claim 1, and in particular in that the knife unit comprises a knife holder which forms a structural unit with the cutting knife, in which the cutting knife protrudes with a fixed projection beyond the knife holder, the structural unit is slidably attached to the knife carriage and a spring device, in particular a compression spring, is provided, which biases the assembly into an extended position.

The cutter according to the invention has the advantage that the cutting blade does not penetrate the transport roller or at least does not penetrate as deeply when cutting off the labels, since the cutting blade can move away from the transport shaft due to its spring-loaded, displaceable fastening when it comes into contact with the surface of the transport shaft. At the same time, the spring force exerts sufficient pressure on the cutting knife to achieve a clean cut when separating a label. The fact that the cutting knife is moved together with the knife unit and always has the same fixed overhang to it can ensure that the penetration depth of the cutting knife in the endless tape labels always remains the same and even in the case of tolerance-related unevenness in the surface of the transport roller Labels can be reliably separated.

It is preferably provided that the knife holder and the cutting knife are each designed in the form of a plate, with the knife holder and the cutting knife with their flat sides against each other. A panel-shaped component is light and stable at the same time. Two plate-shaped components that lie against one another with their flat sides reinforce each other.

In addition, it is preferred if the cutting knife is arranged between the knife carriage and the knife holder. The cutting knife can be supported on both sides between the knife holder and the knife carriage and can therefore be held particularly securely.

The knife carriage can have a base body and an in particular plate-shaped extension protruding from the base body in the direction of the transport roller, to which the structural unit is slidably fastened, the flat sides of the plate-shaped extension preferably being parallel to the plane of movement of the cutting knife when the knife carriage is moved and/or or are oriented parallel to the plane of movement of the cutting blade when the assembly is displaced. This increases the stability of the arrangement.

The spring device is preferably supported on the one hand on the knife carriage, in particular the aforementioned base body, and on the other hand on the structural unit. Alternatively or additionally, it is preferred if the spring device acts directly on both the knife holder and the cutting knife. This enables a compact design of the arrangement in each case.

According to one embodiment of the invention, the knife unit comprises a fastening screw, with which the assembly is slidably fastened to the knife carriage, the assembly being accommodated with play between the head of the fastening screw and the knife carriage in the axial direction of the fastening screw. Secure attachment can be achieved in a simple manner by the attachment screw. However, in order to ensure that they can be moved, the assembly is accommodated with play between the head of the fastening screw and the knife carriage.

In order to allow play in the structural unit between the head of the fastening screw and the knife carriage, the knife unit preferably comprises a spacer sleeve which extends at least through the structural unit, the shank of the fastening screw extending at least into the spacer sleeve, and the head of the Fastening screw is present at one axial end of the spacer sleeve to allow the game.

It can be provided that the spacer sleeve rests with its other axial end on a side of the knife carriage, in particular the aforementioned extension, that faces the structural unit, and the shank of the fastening screw extends through the spacer sleeve into the knife carriage, in particular the extension , wherein the fastening screw is screwed into the knife carriage, in particular the extension, and wherein the extent of the spacer sleeve is greater in the axial direction than the extent of the structural unit.

As an alternative to this, it can be provided that the spacer sleeve extends through the assembly and the knife carriage, in particular the aforementioned extension, and rests with a flange formed on its other axial end on a side of the knife carriage, in particular the extension, facing away from the assembly, wherein the fastening screw is screwed into the spacer sleeve, and the extent of the spacer sleeve in the axial direction is greater than the joint extent of the structural unit and the knife carriage, in particular the extension.

It is preferably provided that at least in the knife holder a slot is formed through which the fastening screw, and in particular the aforementioned spacer sleeve, extending therethrough, the structural unit being displaceable in the direction of the elongated hole. The cutting blade can then be arranged in an area of the blade holder that is not in direct contact with the fastening screw. However, the displaceability of the structural unit can also be made possible in another way, for example if the cutting blade is arranged on the side of the blade holder facing away from the blade carriage. The head of the fastening screw can then be caught and slidably guided in a linear guide formed on the knife holder with stops on both sides. In particular, a slotted hole is formed in both the blade holder and the cutting blade, which are matched to one another and through which the fastening screw, and in particular the aforementioned spacer sleeve, extends, with the structural unit being displaceable in the direction of the two slots. This can be the case in particular when the dimensions of the knife holder and the cutting knife are at least approximately the same, as is preferred for a stable and compact design of the structural unit.

According to a further embodiment of the invention, the knife holder and the cutting knife are plugged together to form the structural unit, the knife holder having at least one pin protruding in the direction of the cutting knife and the cutting knife having at least one opening accommodating the respective pin. As a result, a stable structural unit can be realized in a simple manner.

It is preferred if the knife holder has two pegs and the cutting knife has two openings which are opposite one another with respect to the fastening screw. The resulting symmetrical structure creates a particularly stable structural unit.

It is also preferred if the respective pin of the knife holder extends through the respective opening of the cutting knife and into a respective elongated hole formed in the knife carriage. As a result, the respective pin simultaneously ensures that the structural unit is secured against twisting relative to the knife carriage. However, it is also possible for a separate anti-twist device to be provided, for example two holding arms which protrude from the knife holder in the direction of the knife carriage and rest on both sides of the knife carriage, in particular the aforementioned extension.

The projection of the cutting knife over the knife holder can be between 0.1 mm and 0.8 mm, preferably between 0.2 mm and 0.3 mm. In this way it can be ensured that the cutting blade protrudes only slightly over the blade holder on the one hand, but on the other hand it protrudes far enough to reliably separate the labels.

According to a further embodiment of the invention, a threaded spindle with a threaded rod and the knife carriage as a spindle nut and an electric motor driving the threaded rod are provided in order to linearly move the knife carriage. In this way, an exact movement of the knife carriage is made possible in a simple manner. A straight guide running parallel to the threaded rod is preferably provided in the form of a guide rod which extends through an opening formed in the knife carriage and along which the knife carriage is guided in a linearly displaceable manner. As a result, the knife carriage can be kept particularly stable during the process.

The knife carriage can be moved back and forth between a first end position and a second end position, the cutting knife having a blade in both directions of movement of the knife carriage on the leading edge in each case. This means that a label can be printed in advance and the one that follows label can be cut off in the return of the knife carriage. After a label has been cut off, the knife carriage does not have to be reset to the first end position before the next label can be cut off, so that the throughput can be increased. The two cutting edges preferably form a V-shape together in the plane of movement of the cutting knife when the knife carriage is moved. In this way, particularly clean cuts can be achieved when separating the labels, since the two cutters each have a force component when separating, which presses on the endless strip labels from above.

In particular, the knife carriage can be moved linearly transversely, in particular perpendicularly, to a transport direction of the self-adhesive, carrier-free endless strip labels and/or the structural unit is fastened to the knife carriage in a linearly displaceable manner. In particular, the cutting blade protrudes with the fixed projection beyond an end surface of the blade holder that is in the direction of the transport roller. The transport roller can be provided with a non-stick coating or be made of a non-stick material. The transport roller is preferably a driven transport roller, so that the continuous band labels are also pulled in the area of the cutter and kept under tension. However, a pressure roller of a label printer, in which the cutter is installed, is driven by an electric motor and ensures controlled transport of the endless band labels. In principle, however, the transport roller can also be a non-driven, traveling transport roller.

The present invention also relates to a label printer with a cutter for self-adhesive, linerless continuous tape labels, as explained above.

The present invention also relates to scales, in particular retail scales, with a label printer as explained above.

Further advantageous configurations of the invention are described in the dependent claims, the description of the figures and the drawing.

Fig. 1

eine erfindungsgemäße Waage, insbesondere Ladenwaage, mit einem erfindungsgemäßen Etikettendrucker,

Fig. 2A, B

den Etikettendrucker aus Fig. 1 in Einzeldarstellung mit einer vorderseitigen Abdeckung und in einer Darstellung, in der die vorderseitige Abdeckung weggelassen ist, so dass ein erfindungsgemäßer Abschneider sichtbar ist,

Fig. 3

den Abschneider aus Fig. 2B in Einzeldarstellung mit einer Messereinheit,

Fig. 4A, B

die Messereinheit aus Fig. 3 in Einzeldarstellung mit einer einen Messerhalter und ein Schneidemesser umfassenden Baueinheit in einer Vorderansicht und in einer Darstellung, in der der Messerhalter ausgeblendet ist,

Fig. 5A, B

die Messereinheit aus Fig. 4A in einer Seitenansicht und in einer Explosionsdarstellung,

Fig. 6A, B

die Messereinheit aus Fig. 4A in einer Rückansicht und in einer Darstellung, in der die Baueinheit abgenommen ist,

Fig. 7

die Baueinheit aus Fig. 6B in einer Explosionsdarstellung,

Fig. 8A, B

die Messereinheit gemäß Fig. 4A in einer Darstellung mit ausgefahrener Baueinheit und in einer Darstellung mit zurückgedrängter Baueinheit,

Fig. 9

die Messereinheit gemäß den Fig. 8A und 8B in einer Zielposition,

Fig. 10

ein Verfahren zum Abtrennen von Endlosband-Etiketten, und

Fig. 11

eine alternative Messereinheit in einer geschnittenen Seitenansicht.

The invention is described below by way of example with reference to the drawing. Show it,

1

a scale according to the invention, in particular shop scales, with a label printer according to the invention,

Figure 2A,B

the label printer 1 in an isolated view with a front cover and in a view in which the front cover is omitted so that a cutter according to the invention can be seen,

3

the cutter Figure 2B in individual representation with a knife unit,

Figure 4A,B

the blade unit 3 in an individual representation with a unit comprising a knife holder and a cutting knife in a front view and in a representation in which the knife holder is hidden,

Figure 5A,B

the blade unit Figure 4A in a side view and in an exploded view,

Figure 6A,B

the blade unit Figure 4A in a rear view and in a view with the assembly removed,

7

the assembly Figure 6B in an exploded view,

Figure 8A,B

the knife unit according to Figure 4A in a representation with the assembly extended and in a representation with the assembly pushed back,

9

the knife unit according to the Figures 8A and 8B in a target position,

10

a method for severing endless tape labels, and

11

an alternative knife unit in a sectional side view.

In the 1 The exemplary retail scale 11 shown comprises a load plate 13 which determines the weight of an article lying on it, which is displayed both on a display 15 for the customer and on a display 17 for the seller. The display 17 is designed as a touch screen, so that the retail scales 11 can also be operated via this. An identification number (PLU) assigned to the respective article can be entered via the touchscreen 17 so that, taking the weight into account, a price can be calculated for the article, which is then also displayed on the two displays 15 , 17 . In addition, the retail scale includes a label printer 19 for printing a label with the weight, the name of the item and the price charged. Furthermore, in 1 A control device 20 of the retail scales 11 is shown schematically, which is integrated in the retail scales 11 and designed to control the operation of the retail scales 11, in particular including the label printer 19.

The label printer 19 is in Figure 2A shown in a single view from the front. In Figure 2B a front cover of the label printer 19 in the form of a flap 21 and a cover section 22 separate therefrom is omitted so that the interior of the label printer 19 can be seen. Inside the label printer 19 a receptacle 23 for a label roll and a deflection roller 25 is visible. A print head and a print roller of label printer 19, on the other hand, are in Figure 2B not visible.

The label printer 19 can be operated in particular with self-adhesive, carrier-free endless strip labels. Therefore the label printer 19 has a cutter 27 (which is shown in Figure 2B partially covered by a cover plate 28) with which the labels are separated from the continuous band. How out 3 results, the cutter 27 comprises a driven transport roller 29 for the endless strip labels, which can be rotated about an axis of rotation. In addition, a knife unit 31 is provided, which has a knife carriage 33 (cf. Figures 4A to 6B ), which can be moved linearly parallel to the axis of rotation of the transport roller 29, and a plate-shaped cutting knife 34 which is held in a rotationally fixed manner on the knife carriage 33 and is directed in the direction of the transport roller 29. In principle, however, the label printer 19 can also be operated with receipt paper.

The knife carriage 33 is designed as a spindle nut with a passage 35 with an internal thread, which is driven by an electric motor 39 to be movable in both axial directions of the threaded rod 37 via a threaded rod 37 with which it forms a threaded spindle. In order to ensure stable guidance of knife carriage 33 when moving knife carriage 33, cutter 27 also includes a straight guide running parallel to threaded rod 37, which is designed as a guide rod 41 with a round cross section, which extends through an opening in knife carriage 33 43 extends therethrough. The opening 43 has a slot-shaped cross section, so that tolerances in the distance between the threaded rod 37 and the guide rod 41 can be compensated.

The self-adhesive, carrier-free continuous tape labels are guided between the transport roller 29 and the knife unit 31, with the adhesive-coated side of the continuous tape labels facing the transport roller 29, which acts as a counter-holder for the knife unit 31, in particular the cutting knife 34 of the knife unit 31. The two opposite directions of movement of the knife carriage 33 run perpendicular to the transport direction of the endless strip labels. The print head and the platen roller are in the Figure 2B and 3 arranged behind or below the transport roller 29 and thus - as already mentioned above - not visible in the figures.

The knife carriage 33 has a base body 45 and a plate-shaped extension 47 projecting from the base body 45 in the direction of the transport roller 29, on which the cutting blade 34 is held by means of a plate-shaped blade holder 49 of the blade unit 31. The cutting knife 34 is arranged between the extension 47 and the knife holder 49 . The extension 47, the cutting blade 34 and the blade holder 49 are arranged with their flat sides lying against one another. The flat sides of these components are thus oriented parallel to the plane of movement of the cutting blade 34 when the blade carriage 33 is moved. The passage 35 for the threaded rod 37 and the opening 43 for the guide rod 41 are each provided in the base body 45 .

The knife holder 49 and the cutting knife 34 form a structural unit 51 (cf Figures 5A, 5B , 6B and 7 ), which is slidably attached to the extension 47 of the knife carriage 33 (see. The respective double arrow in the Figure 5A and 8A ), which is moved by a spring device 53 in the form of a compression spring into an extended position (cf. Figure 8A ) is pressed and when the blade unit 31 is placed on the endless strip labels 55 running between the transport roller 29 and the blade unit 31, it is pushed back into a retracted position against the spring force of the spring device 53 (cf. Figure 8B ). The spring device 53 is supported with one end on the base body 45 and with the other end on the structural unit 51, both on the blade holder 49 and the cutting blade 34, from.

The spring-loaded mounting of the cutting blade 34 or the structural unit 51 has the advantage that the cutting blade 34 or the tip of the cutting blade 34 does not or at least hardly penetrates the surface of the transport roller 29 when a label is cut off, but rather by a distance caused by the spacing between the Knife unit 31 and the transport roller 29 predetermined distance is pushed back from the extended position. This can prevent the surface of the transport roller 29 from being roughened by continuous cutting. This is because such a roughened surface would result in the continuous-strip labels sticking more and more to the transport roller 29 with their adhesive-coated side over the course of time, which would interfere with smooth transport of the continuous-strip labels.

How to look in particular Figure 4A (and also from the Figure 5A , 6A and 8A ). The depth of penetration of the cutting blade 34 into the endless strip labels thus always remains the same. This also applies in the case of tolerance-related unevenness in the surface of the transport roller 29. The overhang d is adapted to the thickness of the labels and selected in such a way that the labels can be reliably separated from the endless belt. For example, the overhang can have a value of between 0.1 mm and 0.8 mm, preferably between 0.2 mm and 0.3 mm.

The knife unit 31 is preferably aligned in such a way that the cutting knife 34 or the tip of the cutting knife 34 when the knife carriage 33 is moved along a cutting knife 34 or the tip of the cutting knife 34 closest surface line of the transport roller 29 runs. In principle, however, it is also possible for the cutting knife 34 or the tip of the cutting knife 34 to run along a generatrix of the transport roller 29 when the knife carriage 33 is moved, which has a predetermined offset from the nearest generatrix.

The displaceable attachment of the structural unit 51 comprising the knife holder 49 and the cutting knife 34 is ensured by an arrangement of elongated holes. For this purpose, a slot 57, 59 is formed in the blade holder 49 and the cutting blade 34, which are arranged congruently and through which a fastening screw 61 extends, so that the assembly 51 can be displaced along the two slots 57, 59. The fastening screw 61 is tightly screwed into a fastening hole 63 formed in the extension 47 of the knife carriage 33 .

So that the structural unit 51 is not immovably stuck on the extension 47 , the structural unit 51 is accommodated with play between the head of the fastening screw 61 and the extension 47 in the axial direction of the fastening screw 61 . The play is achieved in that a spacer sleeve 65 is provided, the extent of which in the axial direction of the fastening screw 61 is greater than the corresponding extent of the structural unit 51 and through which the shank of the fastening screw 61 is inserted, so that the spacer sleeve 65 also extends through the two elongated holes 57, 59 extends therethrough. The head of the fastening screw 61 abuts the spacer sleeve 65 at one axial end and the extension 47 of the knife carriage 33 abuts at the other axial end.

The knife holder 49 and the cutting knife 34 are plugged together to form the structural unit 51 . For this purpose, the blade holder 49 has two pins 67 that protrude in the direction of the cutting blade 34 and engage in corresponding openings 69 formed in the cutting blade 34 . These two connectors are opposite each other with respect to the fastening screw 61 or the spacer sleeve 65 . The two pins 67 of the blade holder 49 extend through the two openings 69 formed in the cutting blade 34 and each engage in a corresponding slot 71 formed in the extension 47 . This can reliably prevent the structural unit 51 from rotating about the longitudinal axis of the fastening screw 61 or the spacer sleeve 65 .

The knife carriage 33 is between a first end position to the right of the transport roller 29 (cf. Figure 8A ) and a similar second end position to the left of the transport roller 29 (not shown) can be moved back and forth and can separate labels in both directions. For this purpose, the cutting knife 34 has a cutting edge 73 in both directions of movement of the knife carriage 33 on the respective leading edge. The two cutting edges 73 together form a V-shape in the plane of movement of the cutting blade 34 when the blade carriage 33 is moved, as a result of which a particularly good cutting result can be achieved. Before changing the direction of travel, the endless tape labels 55 are motor-driven step by step, one label at a time.

An alternative method for separating the endless tape labels 55 is in 9 shown. In the alternative method, a label is first printed, then the endless strip labels are transported further by one label and then the knife unit 31 or the knife carriage 33 is moved between a starting position which corresponds to the aforementioned first end position of the knife carriage 33 (cf. Figure 8A ), and a target position as shown in 9 is shown, proceed linearly. How out 9 results, the cutting blade 34 is located to the left of the left edge of the endless strip labels 55, ie the label to be separated has been completely severed. However, the severed label will be in the target position according to 9 held by the knife unit 31 on the transport roller 29 and can then be removed from there by an operator.

The separated label is held in the target position of the knife unit 31 by the fact that the underside of the endless strip labels 55 rests on the transport roller 29 and when the knife unit 31 is moved from the starting position to the target position between the in the direction of the transport roller 29 Lying end face 56 of the knife holder 49, which rests on the top of the endless tape labels 55, and the transport roller 29 are clamped. This then also applies in particular to the severed label in the target position of the knife unit 31. Ultimately, the knife unit 31 or the knife carriage 33 is not moved completely into the aforementioned second end position, but only to the extent that the end surface 56 of the knife holder 49 has a trailing section is still in the area of the endless strip labels 55 or the severed label. When the knife unit 31 is moved, the cutting knife 34 sits on the surface of the transport roller 29 in a sliding manner.

It is advantageous if, when moving the knife unit 31, the end surface 56 of the knife holder 49 runs along a surface line of the transport roller 29 that is closest to the end surface 56 of the knife holder 49, since this allows the severed label to be held particularly well. The cutting blade 34 or the tip of the cutting blade 34 then runs along a surface line of the transport roller 29 that is offset, in particular slightly, from this.

Thereafter, there is a wait until the severed label is removed by an operator. For this purpose, a detector device (not shown) is provided, which is used to detect whether the severed label has been removed by an operator. Only when this is the case does the knife unit 31 automatically move out of the target position. The cutter unit 31 can either return to the starting position or continue to a further starting position that goes beyond the target position and corresponds to the aforementioned second end position, and the endless belt labels 55 can be printed before the next label that is already has partially passed through the print area, can be pulled back to the beginning of the label at which the label was separated (reversing). The method steps explained above are then repeated for the next label to be separated.

If the knife unit 31 has moved on to the further starting position, the knife unit 31 moves in the opposite direction of travel, i.e. in the direction of the starting position, to a further target position (not shown) in order to cut off the next label 9 corresponds to the position shown, albeit at the right-hand edge of the endless belt label 55. The knife unit 31 is thus again not completely moved back into the first end position, but only to the extent that the end face 56 of the knife holder 49 with a trailing section continues to be in the area of the endless belt -Label 55 is located, so that the next separated label is held on the transport roller 29. After the next label has been removed, the knife unit 31 then moves back completely to the starting position.

In order to calibrate the starting position of the knife unit 31, a reference run of the knife unit 31 takes place when the label printer 19 is switched on Magnet 75 detected (cf. 3 ).

A flowchart that illustrates the method steps explained above is in 10 shown, the process steps being controlled or executed by the control device 20 . The alternative method can also be carried out with carrier tape labels in which the labels are applied to a carrier tape.

In 11 an alternative knife unit 31 to the knife unit 31 explained in the previous figures is shown. Unlike the previous knife unit 31, the knife unit 31 extends according to FIG 11 the spacer sleeve 65 not only passes through the structural unit 51, but also through the extension 47 of the knife carriage 33. In particular, the spacer sleeve 65 of the knife unit 31 is in accordance with 11 with the other axial end not on the side of the extension 47 facing the structural unit 51, but with a flange 79 formed on this end on the opposite side of the extension 47. Furthermore, the fastening screw 61 of the knife unit according to 11 not screwed into the extension 47, but in the spacer sleeve 65. In order to allow the aforementioned play of the structural unit 51, the extension of the spacer sleeve 65 in the axial direction of the fastening screw 61 is greater than the joint extension of the structural unit 51 and extension 47 of the knife carriage 33.

The alternative knife unit 31 according to 11 has the advantage that no fastening hole with an internal thread is required in the extension 47 . This is particularly advantageous when the knife carriage 33 with the extension 47 is made of a plastic. For the same reason, in the knife unit 31 according to FIG 11 an insert sleeve 81 is also provided in the passage 35 . The spacer sleeve 65 and the insert sleeve 81 can be made of a metal that can easily be provided with an internal thread for the fastening screw 61 or for the threaded rod 37. Incidentally, in the alternative knife unit 31 according to 11 although the two elongated holes 71 are designed as countersunk holes, they can just as well be designed as continuous elongated holes.

Reference List

11

shop scales

13

load plate

15

customer display

17

Operator touch screen

19

label printer

20

control device

21

flap

22

cover section

23

admission

25

pulley

27

cutter

28

cover plate

29

transport roller

31

knife unit

33

knife slide

34

cutting knife

35

passage

37

threaded rod

39

electric motor

41

senior management

43

breakthrough

45

body

47

extension

49

knife holder

51

assembly

53

spring device

55

Continuous Tape Labels

56

end face

57

Long hole

59

Long hole

61

mounting screw

63

mounting hole

65

spacer sleeve

67

cones

69

opening

71

Long hole

73

cutting edge

75

magnet

77

magnetic field sensor

79

flange

81

insert sleeve

i.e

Got over

Claims (17)

Cutter for self-adhesive, carrier-free continuous tape labels (55), with a transport roller (29) that can be rotated about an axis of rotation and a knife unit (31), which has a knife carriage (33) that can be moved linearly parallel to the axis of rotation of the transport roller (29) and a non-rotatable knife carriage (33) on the Knife carriage (33) held and directed towards the transport roller (29) cutting knife (34), wherein the endless tape labels (55) can be passed between the transport roller (29) and the knife unit (31),
characterized,
in that the knife unit (31) comprises a knife holder (49) which, together with the cutting knife (34), forms a structural unit (51), in which the cutting knife (34) projects beyond the knife holder (49) with a fixed overhang (d), wherein the structural unit (51) is slidably attached to the knife carriage (33) and a spring device (53), in particular a compression spring, is provided, which prestresses the structural unit (51) into an extended position. cutter according to claim 1,
characterized,
that the knife holder (49) and the cutting knife (34) are each plate-shaped, with the knife holder (49) and the cutting knife (34) lying against one another with their flat sides, and/or that the cutting knife (34) between the knife carriage (33) and the knife holder (49). Cutter according to claim 1 or 2,
characterized,
that the knife carriage (33) has a base body (45) and an in particular plate-shaped extension (47) protruding from the base body (45) in the direction of the transport roller (29), to which the structural unit (51) is slidably fastened, wherein the flat sides of the plate-shaped extension (47) are preferably oriented parallel to the plane of movement of the cutting knife (34) when the knife carriage (33) is moved and/or parallel to the plane of movement of the cutting knife (34) when the structural unit (51) is moved. Cutter according to one of the preceding claims,
characterized,
that the spring device (53) is supported on the one hand on the knife carriage (33), in particular a base body (45) thereof, and on the other hand on the structural unit (51), and/or
that the spring device (53) acts directly on both the knife holder (49) and the cutting knife (34). Cutter according to one of the preceding claims,
characterized,
that the knife unit (31) comprises a fastening screw (61), with which the structural unit (51) is slidably fastened to the knife carriage (33), wherein in the axial direction of the fastening screw (61) the structural unit (51) has play between the head of the Fixing screw (61) and the knife carriage (33) is added. cutter according to claim 5,
characterized,
that the knife unit (31) comprises a spacer sleeve (65) which at least extends through the structural unit (51), the shank of the fastening screw (61) extending at least into the spacer sleeve (65), and the head of the fastening screw (61) abutting an axial end of the spacer sleeve (65) in order to to enable play. Cutter according to claim 6,
characterized,
that the spacer sleeve (65) rests with its other axial end on a side of the knife carriage (33) facing the structural unit (51), in particular an extension (47) thereof, and the shank of the fastening screw (61) extends through the spacer sleeve (65) extends through into the knife carriage (33), in particular the extension (47), with the fastening screw (61) being screwed into the knife carriage (33), in particular the extension (47), and with the extension of the Spacer sleeve (65) is greater than the extension of the assembly (51). Cutter according to claim 6,
characterized,
that the spacer sleeve (65) extends through the structural unit (51) and the knife carriage (33), in particular an extension (47) thereof, and with a flange (79) formed at its other axial end on one of the structural unit (51) facing away from the knife carriage (33), in particular the extension (47), with the fastening screw (61) being screwed into the spacer sleeve (65), and with the extent of the spacer sleeve (65) being greater in the axial direction than the common extent the structural unit (51) and the knife carriage (33), in particular the extension (47). Cutter according to one of claims 5 to 8,
characterized,
that at least in the knife holder (49) an elongated hole (57) is formed, through which the fastening screw (61), and in particular the spacer sleeve (65), extends, the structural unit (51) being displaceable in the direction of the elongated hole (57). ,
preferably in both the blade holder (49) and in the cutting blade (34) there is a slot (57, 59) which is matched to one another and through which the fastening screw (61) and in particular the spacer sleeve (65) pass. , extends through, wherein the assembly (51) in the direction of the two elongated holes (57, 59) is displaceable. Cutter according to one of the preceding claims,
characterized,
that the knife holder (49) and the cutting knife (34) are plugged together to form the structural unit (51), with the knife holder (49) having at least one pin (67) protruding in the direction of the cutting knife (34) and the cutting knife (34) having at least one the respective pin (67) receiving opening (69). Cutter according to one of claims 5 to 9 and claim 10,
characterized,
that the blade holder (49) has two pins (67) and the cutting blade (34) has two openings (69) which are opposite one another with respect to the fastening screw (61). Cutter according to claim 10 or 11,
characterized,
that the respective pin (67) of the blade holder (49) through the respective opening (69) of the cutting blade (34) and into a respective in the knife carriage (33) formed elongated hole (71) extends into it. Cutter according to one of the preceding claims,
characterized,
that the projection (d) has a value of between 0.1 mm and 0.8 mm, preferably between 0.2 mm and 0.3 mm. Cutter according to one of the preceding claims,
characterized,
that a threaded spindle with a threaded rod (37) and the knife carriage (33) as a spindle nut and an electric motor (39) driving the threaded rod (37) are provided in order to linearly move the knife carriage (33),
preferably a straight guide running parallel to the threaded rod (37) in the form of a guide rod (41) is provided, which extends through an opening (43) formed in the knife carriage (33) and along which the knife carriage (33) is guided so that it can be moved linearly is. Cutter according to one of the preceding claims,
characterized,
that the knife carriage (33) can be moved back and forth between a first end position and a second end position, the cutting knife (34) having a cutting edge (73) on the leading edge in both directions of movement of the knife carriage (33), with preferably in the Plane of movement of the cutting knife (34) when the knife carriage (33) is moved, the two cutting edges (73) together form a V-shape. Label printer with a cutter (27) for self-adhesive carrierless endless tape labels (55) according to one of the preceding claims. Scales, in particular retail scales, with a label printer (19) according to Claim 16.

Images