JPS6350258B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for applying labels to articles.

[Conventional technology and its problems]

This type of device can be broadly divided into contact type and non-contact type. In the contact type, for example, when an item to be transported on a belt conveyor reaches the labeling position, the label peeled off from the mount is supplied onto the item, and the label is applied by a pressure roller placed at this position. The label is pressed onto the item, and the label is affixed to the item by transporting the item and rotating the pressing roller. An adhesive is applied to the back side of the label in a known manner. However, with this type of contact type, there is no problem if the surface of the item to which the label is attached is flat, but if the surface is uneven, the label may not be attached sufficiently, and the item may break easily like an egg. If it is an object, there is a risk that it will break when it is pressed by the pressure roller.

On the other hand, in the non-contact type, for example, there is a device consisting of a blower and a gate member provided at the exhaust port. When the label to be pasted is supplied above the item, the label is removed by closing the gate member. is attracted to the opening of the casing containing the blower, and then, by opening the gate member, the label is blown away by the blower and affixed to the item. According to such a device, the above-mentioned drawbacks of the contact type can be eliminated, but since a blower is used, the device becomes large and costly.

For example, in the non-contact type, a propeller fan is installed at the opening of the sealed casing, and the negative pressure generated by the fan is used at other openings of the casing to adsorb the label, and the label is affixed to the item. Sometimes, there is a device that applies labels by supplying high-pressure air from a compressor to a plurality of pipes arranged in other openings and blowing away the adsorbed labels toward the item. However, since this device also uses a compressor, it is not only expensive but also generates a lot of noise.

[Problem that the invention seeks to solve]

The present invention was made in view of the above-mentioned current situation, and
Although it is contactless, it is lower cost than before,
It is an object of the present invention to provide a labeling device that produces less noise.

[Means for solving problems]

This object, according to the present invention, includes a closed casing having first and second openings, a fan provided in the first opening for evacuating the inside of the sealed casing, and a shape substantially equal to the shape of the second opening. a label suction plate having an external shape, arranged to be accessible in and out of the label suction plate, and having a ventilation hole; fixed to the label suction plate;
A label driving rod is supported in a first position by a spring so as to be vertically reciprocating and tiltable within the sealed casing, and a part of the label driving rod is sucked or pressed to tilt and assume a second position. an electromagnet rotating at high speed and having a cam engagement member arranged to engage a portion of the label drive rod when the label drive rod is tilted to the second position; When in the first position, the sealed casing is placed in a negative pressure state by the fan, and when a label to be pasted is supplied to the label suction plate, the negative pressure causes the label to be applied through the ventilation hole. At the same time as being attracted to the suction plate, the electromagnet is activated, whereby the label driving rod is tilted to take the second position and is driven downward by engaging with the cam engaging member. The label suction plate is driven downward and outward from the second opening, detaches the adsorbed label, and receives an impact force caused by the high speed rotation of the cam engaging member, so that the label is moved downward. Label pasting characterized in that when the label is blown onto the item to be pasted and the electromagnet becomes inactive, the label drive rod is moved back to the first position by the spring force of the spring. This is achieved by means of a device.

[Effect]

When the label drive rod is in the first position,
The label suction plate fixed thereto closes the second opening, and the label is suctioned by the negative pressure inside the sealed casing through the ventilation hole.

When the label drive rod is partially attracted by the electromagnet and tilted to the second position, it is driven downward by engagement with the cam engagement member rotating at high speed, and the label suction plate is moved to the second position. The label moves downward and outward from the opening, the negative pressure disappears, and the adsorbed label is released. It is pushed towards the item, and the label is attached to the item with this force.

Compared to conventional non-contact types, since a compressor is not used to blow off the label, the noise is lower and costs can be reduced.

〔Example〕

Hereinafter, details of the present invention will be explained for each embodiment with reference to the drawings.

FIG. 1 is a schematic sectional view of a labeling device according to a first embodiment of the present invention. In the figure, 1 represents a closed casing, a propeller fan 2 is provided in this first opening, and a lower A label suction plate 3 is disposed in the second opening so that it can be moved in and out. This label adsorption plate 3 has a substantially rectangular shape and has a number of openings 3a slightly smaller than the second opening, the front edge of which is bent and functions as a label stopper part 3b. .

A label drive rod 4 is fixed to the substantially central portion of the label suction plate 3 and is supported within the closed casing 1 so as to be reciprocally movable and tiltable. This label drive rod 4 is formed with protrusions 4a and 4b,
One end of a tension spring 5 is fixed to one protrusion 4a, the other end of this spring 5 is fixed to a part of the casing 1, and a shaft 10 is fastened to the side of the other protrusion 4b. A cam plate 9 that rotates around the cam plate 9 is disposed, and is configured so that the protrusion 4b and the cam plate 9 engage when the label drive rod 4 is tilted as will be described later.

The position of the label drive rod 4 is restricted near its lower end and at the protrusion 4a by stopper rods 7 and 6, and these stopper rods 6, 7 and the above-mentioned spring 5
It is supported so that it can reciprocate and tilt. An electromagnet 8 is disposed close to the upper end of the label drive rod 4 supported in this manner, and when energized, the armature 8a is connected to the upper end of the label drive rod 4 (at least this part is made of magnetic material). ) is configured to be suctioned. Although not shown, the drive shaft 10 of the cam plate 9 is connected to the rotating shaft of an electric motor.
A flywheel may be fixed to the drive shaft 10.

Next, the operation of the above labeling device will be explained.

As is well known, the labels L are affixed with adhesive at regular intervals on a mount 20 made of paraffin paper, for example, but when the labels L pass through a peeling table 21 forming an acute angle with the mount 20, they are peeled off from the mount 20. be done. Along with this peeling, the label L moves to the left in the figure along the lower surface of the label suction plate 3, but since the inside of the casing 1 is under negative pressure due to the action of the propeller fan 2, the label suction plate 3 is closed again to the opening. Since they are in aligned positions, they move forward while being attracted to the label suction plate 3. When the front edge of the label L comes into contact with the stopper portion 3b, or just before the contact occurs, the electromagnet 8 is energized. Although the position where the label L abuts against the stopper portion 3b or just before it is not shown, it is assumed that it is detected by optical means. The electromagnet 8 is energized by this detection signal. Alternatively, the start of peeling of the label L may be detected, a timer may be activated at the same time, and the electromagnet 8 may be energized after a predetermined period of time.

Alternatively, after the label L is suctioned and held at a predetermined position on the label suction plate 3, a device (such as an optical means) for detecting that the article to which the label is to be attached has come below the label suction plate 3 may be used. The electromagnet 8 may be energized by the detection signal.

When the electromagnet 8 is energized, the upper end of the label drive rod 4 is attracted to the armature 8a as shown by the dashed line. As a result, the rod 4 tilts against the force of the spring 5, and its protrusion 4b engages the cam plate 9, which is rotating counterclockwise at high speed. Since the cam plate 9 is rotating at high speed, the rod 4 is forced to move downward, and as soon as the label suction plate 3 assumes the position shown by the dotted line, the label L is moved as shown by the two-dot chain line. It separates from the label suction plate 3. At this time, the negative pressure is weakened and a force is applied to the label L, so that the label L is blown downward toward the item A and is affixed thereto. On the other hand, the electromagnet 8 is de-energized immediately after the cam plate 9 and the protrusion 4b engage with each other.
As a result, the rod 4 is rotated back to its original position by the action of the spring 5, and moves back upward.

2 and 3 show a second embodiment of the present invention, and in the figures, parts corresponding to those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, the label driving rod 11 is supported at its lower end by a block 13 so as to be able to reciprocate in the vertical direction, and has a flange 11a formed at its upper end, and a spring fixed to the upper surface of the block 13. A return spring 12 is wound around the rod 11 between it and the receiving ring 14. A pair of tilting operation plates 15a and 15b are provided on both left and right sides of the block 13.
is fixed, and one end of a tension spring 18 is fixed to one actuating plate 15b. The rotational force exerted by this spring 18 on the other actuating plate 15a is regulated by a stopper rod 19 provided below.

Further, on both the front and rear sides of the block 13, there are a pair of rotation rods 16a, 16, as shown in FIG.
b is fixed, and the ends of these rods 16a, 16b are supported by bearing housings 17a, 17b. As described above, the label drive rod 11 is supported so as to be tiltable around point 0 and reciprocated in the vertical direction.

In this embodiment, the electromagnet 8 is connected to one of the tilting actuating plates 1
5a, and the cam plate 9 is placed close to the rod 11.
located close to the top edge of the

The operation of the apparatus of the second embodiment configured as above will be explained below.

As in the case of FIG. 1, when the label L is supplied to the label suction plate 3, the electromagnet 8 is energized. As a result, the actuating plate 15a is attracted to the armature 8a of the electromagnet 8, and the label drive rod 11 is tilted to the right about point 0, as shown by the dashed line. Then, the cam plate 9 engages with the upper end of the rod 11 and forces the rod 11 downward against the force of the spring 12. As a result, the label L is forcefully removed downward and affixed to the item below, as in the case of the first embodiment. On the other hand, immediately after the forward movement of the rod 11, the electromagnet 8 is de-energized, and the rod 11 returns to its original position by the action of the spring 18, and returns upward by the restoring force of the spring 12.

Although the embodiment of the present invention is configured as described above,
Of course, the present invention is not limited to these embodiments, and various modifications can be made based on the technical idea of the present invention.

For example, although the electromagnet 8 is used as the means for tilting the label drive rods 4, 11 in the above embodiments, an electromagnetic plunger solenoid may be used instead. In this case, the plunger is attached to the upper end of the rod 4 or to the actuating plate 15a.
(However, in Figures 1 and 2, the position of the electromagnet 8 refers to the rod 4 or the actuating plate 1.)
5a), during label application the solenoid is energized to project the plunger, thereby causing the rods 4, 11 to tilt.

〔Effect of the invention〕

As described above, the labeling device according to the present invention does not use a compressor or blower that constantly generates noise, so it is low cost, extremely quiet, has a simple structure, and can damage items without contact. You can attach a label to it without having to do so.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional side view of a label pasting device according to a first embodiment of the present invention, FIG. 2 is a schematic side view of the same device according to a second embodiment, and FIG. 3 is a cross-sectional view along the line in FIG. It is. In addition, in the figure, 1... closed casing, 2
...Propeller fan, 3...Label suction plate, 4,
11... Label drive rod, 8... Electromagnet, 9...
...cam board.

Claims (1)

[Claims] 1. A sealed casing having first and second openings, a fan provided in the first opening to exhaust the inside of the sealed casing, and having an outer shape approximately equal to the shape of the second opening, and allowing access to and exit from the fan. a label suction plate disposed on the label suction plate and having a ventilation hole;
a label drive rod supported at a position; an electromagnet that attracts or presses a portion of the label drive rod to tilt it to a second position; a cam engaging member disposed to engage a portion of the label drive rod when the label drive rod is in the first position; the fan causes the closed casing to be under negative pressure; When the label to be pasted is supplied to the label suction plate, it is attracted to the label suction plate by the negative pressure through the ventilation hole, and the electromagnet is activated, thereby causing the label to be driven. The rod tilts to the second position and engages with the cam engaging member, thereby driving the label suction plate downward and outward from the second opening. , detaching the adsorbed label and receiving an impact force due to high-speed rotation of the cam engaging member;
The label is blown and affixed to the item to be affixed below, and when the electromagnet is deactivated, the label drive rod is moved back to the first position by the spring force of the spring. Features of the labeling device.