JPS6212092B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a label printing and pasting machine installed on a conveyance line of an automatic packaging device or the like.

(Prior Art) Label printing and pasting machines are of the type that are installed, for example, after the weighing section of an automatic packaging line. A label L on which necessary items such as processing date and price are printed is attached.

Furthermore, Japanese Patent Laid-Open No. 57-55849, which was published after the application of the present invention was filed, discloses a hand-held label printing and pasting machine, which is operated by a reciprocating stroke of a manual operation lever. In conjunction with
This allows printing and pasting of labels.

(Problem to be Solved by the Invention) However, in the former type of automatic packaging line that is installed after the weighing section, the conveyed object T is not transported from the weighing section to the label printing and pasting machine. In a short time, label the above required items with L.
Since it is necessary to print on the label L, peel it off from the label sheet S, and attach it to the conveyed object, a printing device 7 for printing the necessary information on the label L is used as shown in FIGS. 2 and 8. A label pasting mechanism 15 for sucking and holding the label L is provided in close proximity, and a peeling edge 9 is provided between the printing device 7 and the label pasting mechanism 15. For this reason, the platen 8 provided corresponding to the printing device 7 is provided on the back of the peeling edge 9, and therefore, as shown in FIG. There was a problem that printing could only be done on a portion of the platen 8.

It is also possible to memorize the necessary information once and then recall it sequentially and print it on the entire surface of the label L. However, when the order in which the transported objects T are sent comes, the printed information will be printed on the transported objects T and the label L. There is a problem where the required items no longer correspond to each other.

In addition, in the conventional latter handheld type, the printing width and the label feed width for pasting are always constant in response to the stroke operation of the manual operation lever, so the label feed width and printing The width of the backward feed of the label as a preliminary operation for this is always constant, and therefore there is a problem in that it is not possible to change the length of the label or change the printing position on the label.

In view of the above points, this invention has been made. In other words, this invention is intended to be applied after printing the necessary characters at any position on the label, corresponding to the length of the label or the position of printing on the label. It is an object of the present invention to provide a label printing and pasting machine that can efficiently paste labels.

(Means for Solving the Problems) Next, the present invention will be described with reference to drawings corresponding to embodiments.

The present invention provides a printing device 7 that adds information to the label along a traveling path of a label sheet S consisting of a long release sheet and labels L sequentially arranged and attached on the release sheet, and this printing device. a peeling device 9 for peeling off the label printed by 7 from the release sheet; a label pasting mechanism 15 for pasting the label peeled off by the peeling device onto a conveyed object; 1 feeding device 11 and a second feeding device 11 for feeding the label sheet in the backward direction.
a feeding device 12 and a motor M that drives the first feeding device 11 and the second feeding device 12 for a predetermined set time, and the first feeding device 11 is connected to the printing device 7. The second feeding device 12 is provided on the upstream side of the peeling device, and the second feeding device 12 is provided on the upstream side of the peeling device.
and the second feeding device 12 are driven alternately, and the feeding width of the first feeding device 11 is set larger than that of the second feeding device 12.
A label printing and pasting machine characterized in that printing is started after a predetermined surface portion of the label is returned to a position corresponding to a printing device using a feeding device 12.

(Function) By driving the motor M for a preset predetermined time and operating the first feeding device 11, the label sheet S is fed by a predetermined width, and the label L already printed at the beginning is removed by the peeling device 9. The label is peeled off from the release sheet and affixed to the conveyed object T by the label affixing mechanism 15 (FIGS. 5D and 5E).

Next, by the operation of this first feeding device 11,
The next label L shifted to the downstream side of the printing device 7 is reversely fed by a predetermined width by the operation of the second feeding device 12, and desired printing is performed by the printing device 7. (Figure 5 A, B, C).

In the above, the feed width for peeling by the first feeder 11 and the reverse feed width for printing by the second feeder 12 can be adjusted to be longer or shorter by adjusting the driving time of the motor M.

(Embodiment) Next, the present invention will be described with reference to an illustrated embodiment.

This embodiment shows an example in which the label printing and pasting machine according to the present invention is used on an automatic packaging line. An input conveyor 1a into which the conveyor T is input, a packaging device 1b provided at the end of the input conveyor 1a, which wraps the conveyed object T with a film and sends it to the next connecting conveyor 1c, and a weighing section 2 in the latter stage. It has a connecting conveyor 1c to which it is connected. A weighing section 2 is provided downstream of the automatic packaging machine 1, and the weighing section 2 is connected to the downstream side of the connecting conveyor 1c, and the weighing tray is a belt conveyor.
a, and an electronic scale 2b on which this weighing conveyor 2a is placed. Furthermore, weighing conveyor 2a
A conveyor 3a is connected to the downstream side of the conveyor 3a, and a discharge conveyor 4 is connected to the downstream side of the conveyor 3a.
A label printing and pasting machine 3 is provided. This label printing and pasting machine 3 processes the net weight value calculated based on the weighing signal outputted from the weighing section 2 by weighing the contents filled in the transported object T by the weighing section 2. Information such as date, price, etc. is printed on a label L, and the label L is attached to the conveyed object T. In detail, the label printing and pasting machine 3 includes a supply reel 5 that supplies a label sheet S in which labels L are sequentially attached to a long release sheet, a guide roller 6 that guides the label sheet S, and a label A printing device 7, such as a thermal head, which is provided along the path of movement of the sheet S and prints necessary items on the label L.
, a printing platen 8 provided close to the bottom of this printing device 7, and a printing platen 8 provided close to the bottom of this printing device 7, and a printing platen 8 disposed near the bottom of this printing device 7,
A peeling edge 9 as a peeling device that peels off the label L, a take-up reel 10 that winds up the label sheet S from which the label L has been peeled off, and a first feeding device 11 and a second feeding device 12 that run the label sheet S. ,
a label pasting mechanism 15 comprising a suction fan 13 that adsorbs and holds the label L peeled off by the peeling edge 9; and a pasting valve 14 that applies the label L to the conveyed object T using compressed air;
It has a label detector 16 that detects the presence or absence of the label L on the label sheet S. Further, a conveyed object detector 17 for detecting the presence or absence of the conveyed object T is provided at the connecting portion between the weighing conveyor 2a and the transport conveyor 3a. For example, a light emitting diode is used on the light emitting side of 17, and a photodiode is used on the light receiving side.

Next, the first and second feeding devices 11 and 12 will be explained with reference to FIGS. 3 and 4. The first feeding device 11 includes a driving roller 11a directly connected to one end of a drive shaft of a motor M, and a manual roller 1.
It is comprised of a contact roller 11b that is driven following the rotation of the motor 1a, and a pulley 18 provided at the other end of the drive shaft of the motor M. On the other hand, the second feeding device 12 includes a rotary shaft 19 provided in parallel with the drive shaft of the motor M, and a rotary shaft 19 provided in parallel with the drive shaft of the motor M.
A feed roller 12a provided on one end side, a following roller 12b that follows the rotation of the feed roller 12a, and a one-way rotation clutch 20 provided on the other end side of the rotating shaft 19. , the above rotating shaft 1
It consists of a slip device SL provided at 9,
This slip device SL is a one-way rotating clutch 20.
It is composed of a friction plate 22 that comes into contact with the inner ring 21 of the friction plate 22, a drive plate 23 that comes into contact with this friction plate 22, and a spring 24 that presses this drive plate 23 against the friction plate 22. Both sides of 22 are friction surfaces 22a with large frictional resistance,
22a. The drive plate 23 mentioned above
An engagement groove 23a is formed in the diametrical direction, and a pin 25, which is provided in this engagement groove 23a and protrudes in a direction perpendicular to the axial direction of the rotating shaft 19, is formed in the engagement groove 23a.
25 is adapted to be engaged. Further, the spring 24 is connected to the drive plate 23 as a friction plate 22 and the friction plate 22 to the inner ring 21 of the one-way rotation clutch 20, using a flange 19a formed protruding along the outer periphery of the rotating shaft 19 as a reference plane. The configuration is such that it is biased.

The one-way rotating clutch 20 is connected to the pulley 1
The outer ring 20a has a diameter smaller than the diameter of 8 and has a cam surface formed on its inner peripheral surface, and the inner ring 21 is inserted into the outer ring 20a. This outer ring 20
A transmission belt V is wound between a and the pulley 18, and the rotating shaft 19 is inserted through the inner ring 21, and a roller retainer 21a is provided on the outer peripheral surface of the inner ring 21. The rollers K are held between the roller retainer 21a and the cam surface of the outer ring 20a. The above one-way rotating clutch 2
0 means that even if the outer ring 20a is rotated in the direction of the arrow in FIG.
When the inner ring 21 is rotated in the direction of the arrow, the inner ring 21 is driven, and the rotation of the inner ring 21 causes the rotating shaft 19 to be rotated in the direction of the arrow via the friction plate 22.

Thus, in the label printing and pasting machine 3, the label sheet S is drawn out from the supply reel 5, the guide roller 6, the label detector 16, the second feeding device 12, the peeling edge 9, the guide roller 5, and the first Feeding device 1
3 and then wound onto a take-up reel 10.

Next, the operation of the device having the above-described configuration will be explained.

First, when the conveyed objects T filled with contents are sequentially placed on the input conveyor 1a of the automatic packaging machine 1, the conveyed objects T are sent to the packaging device 1b by the input conveyor 1a. After being wrapped in a film, it is conveyed to the weighing conveyor 2a of the next weighing section 2 via the connecting conveyor 1c. While the weighing conveyor 2a is conveying, the total weight of the conveyed object T is measured by the electronic scale 2b, and a calculation control section (not shown) calculates the content based on this total weight and a preset tare weight of the conveyed object T. The net weight value of the object is calculated, and along with this net weight value, necessary items such as processing date and price are output to the printing device 7, and this printing signal causes the motor M to operate correctly as shown in Fig. 5A. The main driving roller 11a and the pulley 18 are rotated counterclockwise as shown in the figure.
As the pulley 18 rotates, the outer ring 20a of the one-way rotating clutch 20 is rotated counterclockwise, that is, in the direction of the arrow in FIG. 4, and the feed roller 12a is in a freely rotating state. But label sheet S
The supply reel 5 is detected by the signal from the label detector 16.
The front edge of the label L 1 is fed to the take-up reel 10 side by a predetermined length a and stopped, and the front edge of the label L ₁ reaches the peeling edge 9.
along the front edge of A motor reversal signal is then applied to the motor M, causing the motor M to rotate clockwise in FIG. 5B for a set time t. This set time t is set to the time it takes for the label sheet S to be rewound by a predetermined length b. That is, as shown in FIG. 5B, by reversing the motor M, the driving roller 1
1a and pulley 18 are reversed, and this pulley 18
As the outer ring 2 of the one-way rotating clutch 20 rotates, the outer ring 2 of the one-way rotating clutch 20
0a is rotated in the direction of the arrow in FIG. 4, the inner ring 21 is rotated in conjunction with the outer ring 20a.

As the inner ring 21 rotates clockwise, the drive plate 23 is rotated clockwise via the friction plate 22, and the feed roller 12a is rotationally driven clockwise. However, the diameter of the outer ring 20a is the same as that of the pulley 18.
Since the diameter of the feed roller 12a is smaller than the diameter of the feed roller 12a, the rotation speed of the feed roller 12a is larger than the rotation speed of the driving roller 11a.

Therefore, the label sheet S is placed on the take-up reel 10.
is returned to the supply reel 5 side by a predetermined length b, and the label L ₁ is returned to the supply reel 5 side by a predetermined length b, as shown in FIGS.
The front half of is located at the bottom of the printing device 7.

Subsequently, the motor M is rotated in the forward direction by the next signal, and the label sheet S is sent in the forward direction by the first feeding device 11, and the label _L1 is sent from the position shown in FIG. 5 C to the position shown in FIG. 5 D. . That is, while the entire surface of the label _L1 passes under the printing device 7, current is selectively passed through a thermal head consisting of a large number of heating elements provided correspondingly to the platen 8, thereby producing the results shown in FIG. As shown in FIG. D and FIGS. 7C and 7D, necessary information can be provided over the entire surface of the label _L1 from the front end to the rear end.

Incidentally, the deflection occurring in the label sheet at this time can be tensioned by rotation of the feed roller 12a, and the label sheet S can be accurately returned by a predetermined length b. Furthermore, even if excessive torque is applied to the one-way rotation clutch 20, the number of revolutions of the feed roller 12a is reduced by the slip mechanism SL, so that the feed roller 12a does not apply strong tension to the label sheet S, and is always properly adjusted. It is possible to apply a certain tension to the label sheet S.

Further, as the motor M rotates forward, the driving roller 11a is rotated counterclockwise in the drawing, and
The feed roller 12a is in a free rotation state, and the label sheet S is sent from the supply reel 5 to the take-up reel 10 in the traveling direction from the state shown in FIG. 5D,
The label L ₁ that has already been printed on the entire surface between FIG. 5C and FIG. 5D is peeled off by the peeling edge 9, and this label L ₁ is
3, the label _L1 is adsorbed and held on the lower surface of the label pasting mechanism 15 with the adhesive layer facing down.

When the transported object detector 17 detects the transported object T, the transported object detector 17 outputs a detection signal, and a control section (not shown) outputs a label pasting signal at a preset timing, and the pasting valve 14 Due to the pressure of the compressed air, the label _L1 is instantaneously affixed to the upper surface of the conveyed object T that is sent directly below the label affixing mechanism 15. The conveyed object T to which this label _L1 is attached is discharged from the discharge conveyor to the next stage.

The next label _L2 is located at the same position as the label _L1 in FIG. 5A, and from this point on the label _L2 undergoes the printing process as described above.

In the embodiment described above, the operations of printing the necessary items on the label L ₁ and pasting the label L ₁ onto the conveyed object T are carried out every time the conveyed object T is sequentially conveyed to the lower part of the label printing and pasting machine 3. This is done to ensure that each transported object T corresponds to the printed content of the label _L1 affixed thereto. After the front end of the label is returned to the position corresponding to the printing device 7 by the second feeding device 12 in advance, the first feeding device 11 prints on the label sheet S while feeding it in the advancing direction. Information corresponding to the conveyed object can be given to the entire body.

Note that after returning the front end of the label L ₁ to the position corresponding to the printing device 8 using the second feeding device 12,
While the first feeding device 11 is intermittently feeding the label in the advancing direction, information to be added may be printed on the label by a line printer at each stop.

(Effects) As explained above, according to the present invention, the labels are peeled off from the release sheet along the traveling path of the label sheet, which is composed of a long release sheet and the labels sequentially arranged and attached on the sheet. a peeling device for the peeling device, a label pasting mechanism for pasting the label peeled off by the peeling device onto a conveyed object;
A first feeding device that sends the label sheet in a forward direction and a second feeding device that sends the label sheet in a backward direction are provided, and the first feeding device is provided downstream of the printing device. The second feeding device is provided upstream of the peeling device, and the first feeding device and the second feeding device are driven alternately, and the feeding width of the first feeding device is the same as that of the first feeding device. 2
The feed width of the second feed device is set to be larger than the feed width of the second feed device, and by returning the predetermined printing surface of the label to the position corresponding to the printing device with the second feed device and printing, the label is printed on the conveyed object. Therefore, it is possible to attach information corresponding to the conveyed object sequentially to the conveyed objects corresponding to the information, and labels having the desired width on the desired side with the information corresponding to the conveyed object can be attached one after another.

Further, the feed width for peeling and the reverse feed width for printing by the first feeding device and the second feeding device can be changed by changing the set driving time of the motor, and therefore It is only necessary to reverse feed to the minimum necessary position according to the printing position, and therefore the time for reverse feed is shortened, and the time for the next forward feed can also be saved, making it possible to work at high speed.
Further, even if the design such as the length of the label is changed, by changing the setting time of the motor, printing can be performed on the label under optimal conditions.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a conveyance line in which a label printing and pasting machine according to the present invention is installed, FIG. 2 is a front view showing the same label printing and pasting machine, and FIG. 4 is an exploded perspective view showing the second feeding device of the label printing and pasting machine according to the present invention, and FIG. The explanatory diagram shown in FIG. 6 is a perspective view showing the position and printing state of the label corresponding to each drawing A to E in FIG.
The figure is an explanatory diagram showing the position and printing state of one label corresponding to each drawing A to E in Fig. 5, and Fig. 8 is a perspective view showing the printing state of a label by a conventional label printing and pasting machine. It is a diagram. M...Motor, 3...Label printing and pasting machine,
7... Printing device, 9... Peeling edge, 11... First feeding device, 12... Second feeding device, 15...
...Label pasting mechanism.

Claims (1)

[Scope of Claims] 1. A printing device 7 that adds information to the labels along the traveling path of the label sheet S, which is made up of a long release sheet and labels L sequentially arranged and attached on the release sheet; A peeling device 9 for peeling off the label printed by this printing device 7 from a release sheet, and a label pasting mechanism 15 for pasting the label peeled off by this peeling device onto a conveyed object.
a first feeding device 11 that sends the label sheet in the advancing direction; and a second feeding device 11 that sends the label sheet in the backward direction.
a feeding device 12 and a motor M that drives the first feeding device 11 and the second feeding device 12 for a predetermined set time, and the first feeding device 11 is connected to the printing device 7. The second feeding device 12 is provided on the upstream side of the peeling device, and the second feeding device 12 is provided on the upstream side of the peeling device.
and the second feeding device 12 are driven alternately, and the feeding width of the first feeding device 11 is set larger than that of the second feeding device 12.
A label printing and pasting machine characterized in that printing is started after a predetermined surface portion of the label is returned to a position corresponding to a printing device using a feeding device 12.