JPH0454900Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is an automatic label pasting device, more specifically, an automatic label pasting device that can perfectly align the position when pasting a label on a workpiece. It is related to the device.

[Prior Art] Conventionally, labeling devices for affixing labels such as price tags and barcodes to various works have been provided.

In such a conventional automatic label pasting device, the label pasting device is held by hand and labels are successively pasted onto the surface of the workpiece.

However, when there are many works to be pasted,
Since it is inefficient to attach labels while holding the device in the hand, automatic label attaching devices have been provided.

In such an automatic label pasting device, the pasting section is formed to be movable in the vertical direction from the fixed frame of the automatic label pasting device in order to automatically pasted labels. Labels were pasted by placing a workpiece below this pasting section.

[Problems to be Solved by the Invention] However, such an automatic label pasting device has a problem in that the position at which the label is pasted to the workpiece is not fixed. In addition, items such as floppy discs that may not function as a product if the attachment position is shifted,
In addition, in the case of products whose commercial value is reduced, the position of label attachment has become an extremely important problem.

These problems are mainly caused by the fact that the label cannot be held at the same location in the holding section that holds the label before it is pasted. In other words, the label that has been peeled off from the mount is generally held in a holding section by negative pressure, and is affixed to the workpiece in this holding state. It was undefined.

Therefore, for example, as in the idea described in Japanese Utility Model Application Publication No. 57-44009, a label is once held in a holding part, and then the label is moved to an appropriate position by advancing and retreating a position regulating shaft provided in this holding part. We also came up with some ideas.

However, even with this idea, the structure is such that the device is held in the holding section and then moved to the proper position, so not only does it take time to hold it in the proper position, but the parts are also complicated. .

Furthermore, as in the invention described in Japanese Patent Publication No. 53-7358 filed by the same applicant, an outer cylinder is provided over the entire label holding part, and the label is pressed against the outer cylinder. At the same time, some were formed so that the outer cylinder rose relative to the holding part when attaching the label to the workpiece.

However, even with this invention, the provision of the outer cylinder not only increases the overall size, but also makes it difficult to move the outer cylinder forward and backward smoothly.

Therefore, the present invention is designed to protrude downward from the holding surface corresponding to the leading end of the label in the feeding direction on the label holding part by its own weight, and to rise so as to retreat into the holding part when it collides with the workpiece. A stopper is provided to keep the position of the label constant when it is held by the holding part, and also to keep the label position constant even when it is attached to a workpiece.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention causes a holding part to hold labels sequentially supplied from a label supply mechanism, and then moves this holding part to a vertical movement mechanism. This is an automatic label pasting device for pasting a label on a work by moving it downward, in which the holding part holds the label supplied from a label supply mechanism and is lowered in the direction of the work by a vertical movement mechanism. A flat plate-shaped label holding surface for attaching the held label to the workpiece when the label is pressed, and a flat plate-shaped holding surface corresponding to the leading end of the label in the feeding direction, protruding downward by its own weight, It is characterized in that it is formed of a stopper that rises by colliding with a workpiece, and is also provided with a blow-out portion for moving the label supplied from the label supply mechanism in the direction of the stopper.

[Function] In the automatic label pasting device according to the present invention, the labels are sequentially supplied to the holding section by the label supply device.

To explain in more detail how the labels are supplied to the holder, the labels pasted on the mount at appropriate intervals in the label supply device are supplied to the holder while being peeled off from the mount one by one.

Then, this label is held in the holding part while being pushed out in the feeding direction from the label feeding device and guided by the air blown from the blowing part.

At this time, in the present invention, since the holding part is provided with a stopper that protrudes downward under its own weight from the holding surface corresponding to the leading edge of the label in the feeding direction, the label can be stopped while colliding with this stopper. becomes.

Therefore, in the holding section according to the present invention, since the feeding direction of the supplied label is regulated by the stopper, the holding position in the holding section is a constant position.

Thereafter, the holding section, holding the label, is lowered toward the workpiece by the vertical movement mechanism.

When the stopper eventually comes into contact with the workpiece, the lower surface of the stopper first comes into contact with the surface of the workpiece.

However, even after the stopper comes into contact with the workpiece in this way, the holding part further descends.

Then, the stopper gradually moves upward so that it is stored in the holding part while resisting its own weight, and eventually the label held on the holding surface of the holding part is pressed against the workpiece surface, and the label is attached to the workpiece. will be held.

That is, in the automatic label pasting device according to the present invention, although the stopper can regulate the holding position at an appropriate position when holding the label on the holding part,
This stopper does not get in the way when a label is attached to a workpiece, and the label can be attached at an appropriate position.

[Example] Hereinafter, an example of the present invention will be described according to an illustrated example.

FIG. 1 is a side view of the work 10 in a state away from it, FIG. 2 is a plan view, and FIG. 3 is a side view of the work 10.
FIG.

In each figure, the automatic label pasting apparatus according to the present invention holds labels 20 sequentially supplied from a label supply mechanism 30 in a holding section 40, and then moves this holding section 40 onto a workpiece 10 by a vertical movement mechanism 50. Label 2 is attached to workpiece 10 by contacting with
0 is pasted.

The labels 20 are attached in advance to a mount 21 at regular intervals, and each label 20 is peeled off from the mount 21 and attached to the surface of the workpiece 10.

The label supply mechanism 30 is for supplying one label 20, the bottom surface of which is an adhesive surface, to the holding section 40 which is moved up and down by the up and down movement mechanism 50.

To explain this label supply mechanism 30 in more detail, there is a feeding mechanism 31 that holds the backing paper 21 with the label 20 pasted thereon and sequentially sends it out, and a feeding mechanism 31 that holds the backing paper 21 with the label 20 pasted thereon and sends out the backing paper 21 with the label 20 pasted toward the holding section 40. a guide rail 32 as a guide, and a supply for supplying the peeled label 20 to the holding unit 40 while peeling the label 20 guided by the guide rail 32 from the mount 21 on which the label 20 is pasted. 33, and a winding mechanism 34 for winding up the mount 21 remaining after the label 20 is peeled off. Also, erected on both sides of the tip of the guide rail 32 are lateral guides 35 for guiding the mount 21 to which the label 20 is attached so that it does not shift laterally.

The vertical movement direction 50 is for vertically moving the holding portion 40 by a cylinder, a cam mechanism, a gear mechanism, etc. (not shown). Further, this vertical movement is made possible in consideration of the height of the workpiece 10 and the like, from a height at which it does not collide with the tallest workpiece 10 to a height at which the label 20 can be attached to the lowest workpiece 10.

Furthermore, this vertical movement mechanism 50 can also be controlled so that it automatically stops after descending a predetermined distance when the heights of the workpieces 10 are the same. On the other hand, when attaching the label 20 to workpieces 10 that are not at the same height, it is necessary to detect that the holding part 40 has contacted the workpiece 10 and to stop the vertical movement mechanism 50 from descending. As a means for such detection, for example, a proximity sensor to the workpiece 10 may be provided in the holding part 40, or a proximity sensor to the workpiece 10 may be provided in the holding part 40, or
It is necessary to provide a pressure sensor to detect contact between the two.

Further, the holding portion 40 includes a vertical rod 5 which is provided in the vertical movement mechanism 50 so as to be vertically movable via a spring 51.
It is fixed at the bottom end of 2.

To explain this holding part 40 in more detail, the lower surface is formed as a holding surface 41 for the flat label 20, and the holding surface 41 is provided with the label 20 by negative pressure.
A suction hole 42 is provided for holding the. Furthermore, on the side of this holding surface 41 opposite to the label supply mechanism 30,
A stopper 43 is provided to protrude downward due to its own weight. This stopper 43 is formed from a rod portion 44 projecting downward from the holding surface 41 and a flange portion 45 provided at the upper end of this rod portion 44. It is located in the upper and lower holes 46 and is located at 47 in a reciprocating hole having a smaller diameter than the upper and lower holes 46 in which the rod portion 44 is connected to the upper and lower holes 46 .

Therefore, under normal conditions, the flange portion 45 is located at the section formed by the upper and lower holes 46 and the advancing/retracting hole 47 due to its own weight, and the rod portion 44 is located at the section formed by the advancing/retracting hole 4.
It protrudes downward from 7. When the stopper 43 comes into contact with the workpiece 10, the tip of the rod 44 first comes into contact with the workpiece 10, and then as the holding section 40 descends, the tip of the rod 44 remains in contact with the surface of the workpiece 10, and the stopper 44 is advance/retreat hole 47
And it will rise relative to the holding part 40 so as to enter the inside of the upper and lower holes 46.

Note that the work 10 placed below the contact in FIG. 1 is placed on a conveyor 12 that is moved by a moving device 11.

Furthermore, a sensor 60 is located at the top of the supply section 33 of the label 20 supply device to detect when the label 20 is peeled off from the mount 21, and a sensor 60 is located at the bottom of the supply section 33 for detecting the peeling of the label 20 from the mount 21. 20
This is a blowing section 70 that blows out air in the direction of the holding surface 41 in order to send out the air to the holding surface 41.

Next, the operation of the automatic label pasting device according to the present invention will be explained.

First, the holding part 40 is raised to a predetermined position by the vertical movement mechanism 50.

After the holding part 40 has risen to a predetermined position, the label supply mechanism 30 is moved toward the holding surface 41 of the holding part 40.
The label 20 is supplied by.

To explain in more detail how the labels 20 are supplied to the holding surface 41, the labels 20 pasted on the mount 21 at appropriate intervals in the label 20 supplying device are peeled off one by one from the mount 21 in the supply section 33, while being removed from the holder 40. is supplied to Therefore, only the label 20 is supplied from the supply section 33 to the holding surface 41, and the mount 21 after the label 20 is peeled off is wound up by the winding mechanism 34.

Further, in front of the supply section 33 of the label supply mechanism 30, a horizontal guide 35 is installed, and the horizontal direction of the mount 21 is regulated by the horizontal guide 35, so that the labels 20 that are sent out can also be held. The horizontal direction in plane 41 is the proper position.

If the label 20 peeled off from the mount 21 in the supply section 33 in this way is left as it is, it will be sent out in a slightly bent downward state, but in this embodiment, air is There is a speech balloon section 70, and this speech balloon section 70
Since air is blown out toward the holding surface 41, the pressure of this air blows out the label 2.
0 remains in close contact with the holding surface 41.
1 will be supplied.

The fact that the label 20 has been sent out onto the holding surface 41 in this manner is detected by the sensor 60 provided above the supply section 33 . Detection by this sensor 60 is performed by detecting, for example, a difference in color between the backing paper 21 and the label 20, a difference in the degree of reflection, etc. using a photo sensor, etc., to detect whether the label 20 has completely peeled off from the backing paper 21. It is something you should do accordingly. After detecting that the label 20 has completely peeled off in this way, the operation of the label supply mechanism 30 is stopped, and the work of attaching the label 20 to the next workpiece 10 is performed.

Further, even after the label 20 is completely peeled off from the mount 21, the label 20 is moved in the direction opposite to the supply section 33 on the holding surface 41 by air from the blowing section. The label 20 that has moved in the direction opposite to the supply section 33 eventually reaches the stopper 43 whose tip end protrudes downward from the holding surface 41 due to its own weight.
It collides with the object and stops moving.

Therefore, the label 20 is attached to this stopper 4.
Considering position 3 as the reference position, it will always be held at a constant position on the holding surface 41.

Further, in this holding section 40, regardless of whether the label 20 is being sent out by air from the blowing section 70 or after the movement has been stopped by the stopper 43, the negative pressure from the suction hole 42 communicating with the negative pressure source is maintained. The label 20 is suctioned and held on the holding surface 41 by pressure suction.

Next, the holding part 40 is lowered toward the workpiece 10 by the vertical movement mechanism 50.

When the workpiece 10 is approached, the lower surface of the stopper 43, which projects downward from the holding part 40 due to its own weight, comes into contact with the surface of the workpiece 10.

However, even when the stopper 43 comes into contact with the workpiece 10 in this way, the label 20, which is held under negative pressure on the holding surface 41, is not yet in contact with the workpiece 10.
Furthermore, the holding part 40 is lowered by the vertical movement mechanism 50.

Then, the stopper 43 contacts the workpiece 10 and does not descend any further, so as a relative movement with the holding part 40, the stopper 43 gradually moves upward so that it is stored in the holding part 40, and eventually the holding part 43 is moved upward. The label 2 held on the holding surface 41 of the section 40
0 is pressed against the surface of the workpiece 10, and the label 20 is attached to the workpiece 10.

After the label 20 has been attached to the workpiece in this way, the holding part 40 is raised again by the vertical movement mechanism 50 and returns to the initial stage.

When the holding part 40 rises like this, the holding surface 41 first separates from the surface of the workpiece 10, but the stopper 43
It does not leave the workpiece 10 until it reaches the section formed by the upper and lower holes 46 and the advancing and retracting holes 47.

That is, in the automatic label pasting device according to the present invention, when holding the label 20 in the holding section 40, the lateral direction of the label 20 can be controlled by the lateral guide 35, which is a guide for the mount, and the feeding direction can be controlled by the stopper. 43, the label 20 can always be attached to the appropriate position on the workpiece 10.

Furthermore, since this stopper 43 is retracted into the upper and lower holes 46 when it comes into contact with the workpiece 10, it does not get in the way when the label 20 is attached to the workpiece 10, and the label 20 is not attached to the proper position. It can be done.

Further, in the illustrated example, two stoppers 43 are shown, but three or more stoppers 43 may be provided.
If 3 is formed into a plate shape, one piece is sufficient.

Furthermore, even if the label 20 has a suitably curved surface, it can be sufficiently coped with by installing a stopper 43 having a curved surface that matches the curved surface, or by arranging the stopper 43 so as to match the curved surface. It is something.

[Effects of the invention] As explained above, the present invention has a label holding part that protrudes downward under its own weight from the holding surface corresponding to the leading end of the label in the feeding direction, and collides with the workpiece. A stopper is provided inside the holding part that moves upward to retreat, keeping the position of the label constant while it is held in the holding part, and also maintaining a constant position of the label when it is attached to a workpiece. It is.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the device away from the workpiece, Fig. 2 is a plan view, and Fig. 3 is the state of the device in contact with the workpiece. FIG. 10... Work, 11... Moving device, 12...
Conveyor, 20... Label, 21... Mount, 30
... Label supply device, 31 ... Feeding mechanism, 3
2... Guide rail, 33... Supply section, 34...
Winding mechanism, 35... Horizontal guide, 40... Holding section, 41... Holding surface, 42... Suction hole, 43...
Stopper, 44...rod part, 45...flange part, 46...up/down hole, 47...advance/retreat hole, 50...
Vertical movement mechanism, 51... Spring, 52... Vertical bar, 60... Sensor, 70... Blowout section.

Claims (1)

[Scope of claim for utility model registration] Labels supplied sequentially from the label supply mechanism,
An automatic label affixing device that affixes a label to a workpiece by holding the label in a holder and then moving the holder downward by a vertical movement mechanism, the holder being used to attach a label to a workpiece that is supplied from a label supply mechanism. a label holding surface formed in a flat plate shape for holding the label and attaching the held label to the workpiece when the label is lowered in the direction of the workpiece by a vertical movement mechanism;
The label is formed by a stopper that protrudes downward under its own weight from a flat holding surface corresponding to the leading edge in the feeding direction of the label, and rises when it collides with a workpiece, and a label that is fed from a label feeding mechanism. An automatic label pasting device characterized by being provided with a balloon portion for moving the label toward the stopper.