JPH1191752A - Label unwinding device of label sticking machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label unwinding device of a label sticking machine wherein a label piece can be accurately stuck to an object for receiving the label at a high speed by causing the label fed from a label supply part to stop as soon as transfer of a continuous label body stops and preventing the continuous label body from being disentangled even by intermittent transfer of the continuous label body. SOLUTION: The apparatus features movement of a tension lever 14 at the time of a continuous label body 10 being pulled and stopping serving as a kind of sensor, and control and canceling of the movement of the tension lever 14 causing the continuous label body 10 to be supplied and stopped. It includes the tension lever 14 which guides the continuous label body 10 and can energize it in a direction of a label supply part 2 and a brake mechanism 36 which can stop unwinding the continuous label body 10 from the label supply part 2 according to a position of the tension lever 14 and cancel this.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label unwinding apparatus for a label sticking machine, and more particularly to a label unwinding apparatus for a label sticking machine for continuously sticking a label to an object to be stuck.

[0002]

2. Description of the Related Art A conventional label unwinding apparatus of a label sticking machine will be outlined with reference to FIG. FIG. 6 is a schematic side view of the conventional label pasting machine 1, and the label pasting machine 1
A label supply unit 2, a label unwinding device 3, and a printing unit 4
And a label peeling member 5, a label sticking member 6, and a mount winding section 7.

[0003] The label supply unit 2 holds a label continuous body 10 in which a plurality of label pieces 9 are temporarily attached to a belt-shaped mount 8 in a roll shape, and can unwind the label continuous body 10 in a belt shape. The label supply unit 2 includes a supply frame 11 that stands up, a supply shaft 12 that is rotatably attached to the supply frame 11, and a supply reel 13 that supports a side surface of the roll-shaped label continuous body 10.

The label unwinding device 3 includes a tension lever 14 and a label continuum 1 perpendicular to the tension lever 14.
It has a tension roller 15 extending in the width direction of 0, a lever rotation shaft 16 around which the tension lever 14 can rotate, and a coil spring 17. The tension roller 15 guides the label continuum 10, and urges the label continuity 10 in the direction of the label supply unit 2 by the urging force of the coil spring 17, so that the unwinding of the label continuity 10 reduces the tension on the upstream side. You can call it.

[0005] The printing section 4 is provided as necessary, and prints predetermined information on the label piece 9 by a stamp, thermal transfer or any other printing mechanism.

[0006] The label peeling member 5 is provided with a label continuum 10 by pulling the backing material 8 downstream by the backing material winding unit 7.
The label piece 9 is peeled off from the backing sheet 8.

The label sticking member 6 sticks the peeled label pieces 9 to a predetermined sticking object 19 continuously conveyed by a conveying mechanism 18 such as a conveyor.

The mount winding section 7 has a winding shaft 20 and a drive motor 21 for driving the winding shaft 20 to rotate, and intermittently winds the mount 8 at a predetermined pitch.

In the label sticking machine 1 and the label unwinding device 3 having the above-described structures, when the object 19 to be stuck conveyed by the conveying mechanism 18 reaches the position of the label peeling member 5 or the label pasting member 6, a sensor ( This is detected by a not-shown), the drive motor 21 of the mount winding unit 7 is driven to pull the mount 8 by a predetermined pitch, the label strip 9 is peeled off by the label peeling member 5, and the object 19 to be stuck is transported. The label piece 19 is sent out at a speed equal to the speed, and is attached to the object 19 by the label attaching member 6.

The tension lever 14 rotates around the lever rotation shaft 16 against the urging force of the coil spring 17 at the time of the pulling action of the mount 8 in the downstream direction of the mount 8 at the mount winding section 7, that is, at the time of peeling of the label piece 9. It turns counterclockwise in the figure, and allows the unwinding of the label continuum 10 while applying a resistance in the label supply unit 2 direction (upstream direction) with a predetermined tension.

After the label pieces 9 are peeled off, the operation of the drive motor 21 is stopped to stop the pulling of the label continuum 10, and the next object to be affixed 19 is transported by the transport mechanism 1.
8, the sheet is conveyed to the position of the label peeling member 5 or the label sticking member 6, and the above peeling and sticking operation is repeated.

However, the torque required for unwinding varies between the initial stage in which the roll diameter of the label continuous body 10 in the label supply unit 2 is large and the latter period in which the roll diameter is small. On the other hand, the label unwinding device 3 uses the label continuum 10 via the tension lever 14 and the tension roller 15.
Is a constant torque generated by the coil spring 17. That is, in the label sticking machine 1, the drive motor 21 of the mount take-up unit 7 is selected so that the label continuous body 10 can be pulled out at the initial stage when the roll diameter is large. However, since the initial drive torque is large, the roll diameter is large. When the intermittent pulling of the label continuous body 10 is performed and stopped in the latter period when the label is small, the label continuous body 10 moves in the direction of the label peeling member 5 due to inertial action when the drive motor 21 stops, and the roll thereof is rolled. Unraveling from the wire occurs, and it sags.

The unwinding phenomenon has a problem in that the stop position of the label continuous body 10 or the label piece 9 in the label peeling member 5 or the label sticking member 6 is shifted, and therefore the position of the label sticking to the object 19 is shifted. . In an extreme case, there is a problem that the label stripping member 5 does not perform the stripping action of the label piece 9.

When the transport speed of the transport mechanism 18 and the corresponding pulling speed of the drive motor 21 are low,
Although the above-described problem does not appear significantly, if the transport speed of the transport mechanism 18 and the unwinding speed of the label continuous body 10 increase, the above-described problem of unraveling becomes apparent, and it is impossible to increase the sticking efficiency of the label pieces 9. There's a problem.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a label unwinding apparatus for a label sticking machine capable of sticking a label piece to an object to be stuck at high speed with high accuracy. The task is to

Another object of the present invention is to provide a label unwinding apparatus of a label sticking machine which can stably unwind a label continuous body from a label supply unit even by intermittent transfer of a label continuous body. As an issue.

It is another object of the present invention to provide a label unwinding apparatus of a label sticking machine which prevents the label continuous body from being unraveled from a label supply unit even by intermittent transfer of the continuous label body. And

Another object of the present invention is to provide a label unwinding apparatus for a label sticking machine which can immediately stop the unwinding of the label continuity from the label supply unit when the transfer of the label continuity is stopped. And

Further, the present invention provides a label sticking machine which can always apply a predetermined tension to the label continuum without excess or deficiency, and can ensure the action of peeling the label pieces from the backing paper in the label peeling member. It is an object to provide a label unwinding device.

[0020]

That is, the present invention uses a movement (rotation) of the tension lever when the label continuous body is pulled and when the label is stopped, as a kind of sensor. It focuses on braking and canceling the supply and stop of label continuity in the supply unit, and it is possible to eliminate the unraveling phenomenon by this braking, and it is a label continuous where multiple label pieces are temporarily attached to a band-shaped mount. A label supply unit capable of holding the body in a roll shape and unwinding the label continuum in a belt shape, and a label peeling member for peeling a label piece from the mount of the label continuity unwound from the label supply unit And a label affixing member that affixes the peeled label piece to a predetermined object to be affixed, and a mount winding unit that winds the mount. A label unwinding device for a bell sticking machine, which guides the label continuum between the label supply unit and the label peeling member and tensions the label continuum in a direction toward the label supply unit. A label, and a braking mechanism capable of applying a brake to unwinding of the label continuum from the label supply unit in accordance with the position of the tension lever, or releasing the brake. This is a label unwinding device.

The braking mechanism has a belt member wound around a supply shaft of the label supply section, and a first belt state capable of preventing unwinding of the label continuous body from the supply shaft; The belt member may be drivable between a second belt state in which unwinding of the label continuum from the supply shaft is possible.

The braking mechanism includes a belt member wound around a supply shaft of the label supply section, and a balancer in which one end of the belt member and a lever rotation shaft of the tension lever are eccentrically fixed to each other. A biasing member for biasing the balancer such that the belt member brakes the unwinding of the label continuum from the label supply unit.

The tension lever is rotated about its lever rotation axis in accordance with the driving of the mount winding unit, and is moved to a first lever position and a second lever position different from the first lever position. And the brake mechanism applies a brake to the label supply unit at the first lever position, and the brake mechanism releases the brake to the label supply unit at the second lever position. Can be.

The belt member may have different frictional resistances on the front and rear surfaces.

In the label unwinding device of the label sticking machine according to the present invention, the braking mechanism operates the supply and stop of the label continuity of the label supply unit by the movement of the tension lever when the label continuation is pulled and when the tension is stopped. The braking was released and the braking was performed in accordance with
It is possible to eliminate the conventional unraveling phenomenon of the label continuity from the label supply unit due to inertia.

That is, the braking mechanism can apply braking to the unwinding of the label continuum from the label supply unit in accordance with the position of the tension lever, and can prevent the unwinding of the label continuation when the supply of the label continuity is stopped. . Also, when the label continuum is pulled downstream and the label continuum needs to be unwound, the tension lever that guides the label continuum moves, and the braking mechanism can release its braking function. The label continuum can be unwound in the direction of the label peeling member by a required length.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a label unwinding apparatus 30 of a label sticking machine according to an embodiment of the present invention will be described with reference to FIGS.
This will be explained based on However, the structure of the label pasting machine itself is the same as that of the conventional label pasting machine 1 (FIG. 6), and the same parts as those in FIG. 6 are denoted by the same reference numerals, and the detailed description thereof is omitted. FIG. 1 is an exploded perspective view of the label supply unit 2 and the tension lever 14, FIG. 2 is an exploded perspective view of a label unwinding device 30 of the label sticking machine viewed from the opposite side to FIG. 1, and FIG. FIG. 4 is a side view of the label unwinding device 30 of the label sticking machine as viewed from a direction in which the label continuous body 10 is transported.

As shown in FIG. 1, the supply shaft 12 is rotatably mounted on a supply shaft housing 31 mounted on the supply frame 11 via a bearing 32. The label boss 33 is fixed to the tip (one end) of the supply shaft 12, and the label continuous body 10 is rotatably held. One supply reel 13 (removable supply reel 13 on the left side in the figure) and an auxiliary boss 34 integrated therewith are detachably attached to the supply shaft 12 and the label boss 33 to hold the side surface of the label continuous body 10. The other end of the supply shaft 12 faces the inside of the supply frame 11.

The lever rotation shaft 16 of the tension lever 14 is connected to the supply frame 1 via a bearing 35.
1, which is rotatably mounted, with its end facing the inside of the supply frame 11.

As shown particularly in FIG. 2, the label unwinding device 30 of the label sticking machine has a tension lever 14, a tension roller 15, a lever rotation shaft 16, and a braking mechanism 36.

The braking mechanism 36 brakes or releases the unwinding of the label continuum 10 from the label supply unit 2 according to the position of the tension lever 14.
Brake pulley 37, belt member 38, belt flange 39, balancer 40, coil spring 4
1 (biasing member).

The brake pulley 37 is connected to the supply frame 1
1 is fixed to the end of the supply shaft 12 inside the belt member 1 and a belt member 38 is hung around this peripheral surface.
9 is attached so that the belt member 38 does not come off.

The front surface 38A (one surface) and the rear surface 38B (the other surface) of the belt member 38 have different frictional resistances. For example, the surface 38A is made of polyurethane or other rubber material having a large frictional force, and is used on the side that comes into contact with the brake pulley 37 when the pitch of the label pieces 9 is as large as 80 mm or more. The material of the back surface 38B is made of polyester or the like and has a small frictional force.
Is used when the pitch is smaller than 80 mm.

FIG. 4 is a rear view of the braking mechanism 36 viewed from the back side of the label supply unit 2, and FIG. 5 is a front view of the label unwinding device 30 of the label sticking machine viewed from the label supply unit 2 side. The balancer 40 has one end 38C of the belt member 38 connected to the lever rotating shaft 16 of the tension lever 14 via the belt mounting bolt 42 and the tension housing 43 and the pair of bearings 44.
Are eccentrically fixed to each other. By arbitrarily setting the length E of the eccentric arm, the tension lever 14
The degree of slack of the belt member 38 due to the rotation of the belt or the degree of contact friction between the brake pulley 37 and the belt member 38 can be selected.

The coil spring 41 is connected to the belt member 38.
This is mounted between one end 38C (belt mounting bolt 42) and the spring mounting bolt 45.
The other end 38 </ b> D of the belt member 38 is fixed to the supply frame 11 by a belt fixing bolt 46 so that the balancer 40 can be urged, and the belt member 38 unwinds the label continuous body 10 from the label supply unit 2. Try to brake on. However, the urging force of the coil spring 41 is set smaller than the pulling force of the mount 8 by the drive motor 21.

In the label unwinding device 30 of the label sticking machine having such a configuration, as shown in FIG. 5, the tension lever 14 rotates around the lever rotation shaft 16 with the driving of the mount winding unit 7. To move to a first lever position L1 and a second lever position L2 different from the first lever position L1.

The first lever position L1 is the position of the label attaching machine 1
This is an initial stop position where the whole is not stopped or the label continuity 10 is not transferred, so to speak, this is set singly. The second lever position L2 corresponds to the label continuum 10.
Of the tension roller 15 with the unwinding of the sheet or with the change in the roll shape of the label continuous body 10.
Is a position moved in the counterclockwise direction in FIG. At the first lever position L1, the braking mechanism 36
At the second lever position L2, and the braking mechanism 36 releases this braking on the label supply unit 2.

That is, the object 1 to be stuck on the transport mechanism 18
When the label 9 comes to the label peeling member 5, when the drive motor 21 of the mount winder 7 is operated to pull the mount 8 to the downstream side, the label piece 9 at the label peeling member 5
Is peeled off from the backing sheet 8 and the coil spring 4
The tension lever 14 rotates counterclockwise in FIG. 5 against the urging force of 1 and shifts from the first lever position L1 to the second lever position L2.

The rotation transition of the tension lever 14 is transmitted to the balancer 40 via the lever rotation shaft 16, and the balancer 40 also rotates counterclockwise in FIG. 5 to move the belt member 38 around the brake pulley 37. In the counterclockwise direction to reduce the contact force therebetween. That is, the belt member 38 includes a first belt state B1 (a state in which the label continuity 10 is unwound from the supply shaft 12 (that is, a tensioned state, a solid line in the drawing)) and a label continuity from the supply shaft 12. A transition is made between a second belt state B2 (so-called slack state, a virtual line in the drawing) in which 10 unwindings can be realized. Therefore, in the second belt state B2 of the belt member 38, the supply shaft 12 integral with the brake pulley 37 can rotate by a predetermined angle, and the label continuity 10
At a predetermined pitch.

Driving motor 21 in mount winding section 7
Is stopped and the transfer of the label continuum 10 is stopped, the tension on the tension lever 14 by the label continuity 10 is lost, so that the tension lever 14 is biased by the biasing force of the coil spring 41 via the lever rotation shaft 16 and the balancer 40. The belt member 38 is restored to the stop position (first lever position L1) and the contact position of the belt member 38 with the brake pulley 37 (first belt state B1). Therefore, the supply shaft 12 includes the brake pulley 37 and the belt member 3.
The label continuity 10 is prevented from unwinding by the inertia due to the friction due to the contact friction with the label 8.

Thereafter, the label continuum 10 is unwound from the label supply unit 2 by repeating the above-described operation. However, despite the intermittent motion of pulling and stopping at the mount winding unit 7, the label continuation is continued at a predetermined pitch. After the body 10 is unwound securely and unwound by a predetermined pitch, braking can be applied immediately.
It is possible to solve all the problems as described in the above.

When a label continuous body 10 having a different pitch between the label pieces 9 is loaded, the belt member 38
By assembling the front surface 38A and the back surface 38B so that the front and back surfaces are exchanged, different friction braking forces can be generated between the belt member 38 and the brake pulley 37.

[0043]

As described above, according to the present invention, since the braking mechanism which operates according to the movement of the tension lever is provided, the label continuum is unwound by the inertial action accompanying the unwinding of the label continuity. In addition to eliminating the problem that the stripping position or the stop position of the piece is shifted, even if the feeding speed of the label continuum is increased, the stop position is kept constant, and the accuracy of the label sticking position with respect to the object to be stuck is improved. Can be maintained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a label supply unit 2 and a tension lever 14 associated with a label unwinding device 30 of a label sticking machine according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the label unwinding device 30 of the label pasting machine, viewed from the opposite side of FIG.

FIG. 3 is a side view of the label unwinding device 30 of the label sticking machine as viewed from the direction in which the label continuous body 10 is transported.

FIG. 4 shows a braking mechanism 3 as viewed from the back side of the label supply unit 2.
It is a rear view of six parts.

FIG. 5 is a front view of the label unwinding device 30 of the label sticking machine as viewed from the label supply unit 2 side.

FIG. 6 is a schematic side view of a conventional label sticking machine 1 and a label unwinding device 3 thereof.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 label pasting machine (FIG. 6) 2 label supply section 3 label unwinding device of label pasting machine 1 4 printing section 5 label peeling member 6 label pasting member 7 mount winding section 8 band-shaped backing sheet 9 label piece 10 label continuity 11 Supply frame 12 Supply shaft 13 Supply reel 14 Tension lever 15 Tension roller 16 Lever rotation axis 17 Coil spring 18 Conveyor mechanism such as conveyor 19 Adhered object (product) 20 Winding shaft 21 Drive motor 30 Label unwinding machine Apparatus (embodiment,
2) 31 Supply shaft housing 32 Bearing 33 Label boss 34 Auxiliary boss 35 Bearing 36 Braking mechanism 37 Brake pulley 38 Belt member 38A Surface of belt member 38 (one surface) 38B Back surface of belt member 38 (other surface) 38C Belt member 38 One end 38D The other end of the belt member 38 39 Belt flange 40 Balancer 41 Coil spring (biasing member) 42 Belt mounting bolt 43 Tension housing 44 Bearing 45 Spring mounting bolt 46 Belt mounting bolt E Belt member 38 Length of eccentric arm between one end 38C and lever rotation shaft 16 of tension lever 14 (FIG. 5) L1 First lever position of tension lever 14 (FIG. 5) L2 Second of tension lever 14 Lever position ( FIG. 5) B1 First belt state of belt member 38 (FIG. 5) B2 Second belt state of belt member 38 (FIG. 5)

Claims (5)

[Claims] 1. A label supply unit capable of holding a label continuous body in which a plurality of label pieces are temporarily attached to a band-shaped backing paper in a roll shape and unwinding the label continuous body in a belt shape; A label peeling member for peeling a label piece from the backing of the unwound label continuum, a label sticking member for sticking the peeled label piece to a predetermined object to be pasted, and a backing roll for winding the backing sheet Department and
A label unwinding device of a label sticking machine having a guide for guiding the label continuity between the label supply unit and the label peeling member, and energizing the label continuity in the direction of the label supply unit. And a braking mechanism capable of applying a brake to the unwinding of the label continuum from the label supply unit in accordance with the position of the tension lever, or a brake mechanism capable of releasing the unwinding. Label unwinding machine. 2. The first belt state in which the braking mechanism has a belt member wound around a supply shaft of the label supply unit, and is capable of preventing unwinding of the label continuum from the supply shaft. The label for a label sticking machine according to claim 1, wherein the belt member can be driven between a second belt state capable of realizing unwinding of the label continuous body from the supply shaft. Unwinding device. 3. The braking mechanism according to claim 1, wherein a belt member wound around a supply shaft of the label supply unit, and one end of the belt member and a lever rotation shaft of the tension lever are eccentrically fixed to each other. 2. The balancer according to claim 1, further comprising: a biasing member configured to bias the balancer so that the belt member brakes the unwinding of the label continuum from the label supply unit. 3.
The label unwinding device of the label sticking machine described in the above. 4. The tension lever rotates around a lever rotation axis thereof with the driving of the backing sheet winding unit, and the first lever position and a second lever position different from the first lever position. Movable in a lever position, the brake mechanism applies a brake to the label supply unit in the first lever position, and the brake mechanism releases the brake on the label supply unit in the second lever position. The label unwinding device for a label pasting machine according to claim 1, wherein 5. The label unwinding device for a label sticking machine according to claim 1, wherein the belt member has different frictional resistances on the front and rear surfaces.