JPS6350255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a label take-out device that takes out labels one by one from a label magazine in which labels are stacked and stored.

``Prior Art'' Conventional label take-out devices are equipped with a pick-up roller that adsorbs labels using vacuum force or the adhesive force of glue, and a label magazine that stores a large number of labels in a stack. In order to allow the pick-up roller to smoothly pick up and pick up the label, it is oscillated in synchronization with the rotation of the pick-up roller.

In addition, for the above-mentioned label take-out device that swings the label magazine, the label magazine is fixed, and the picker that attracts the labels can be operated by drawing a special movement trajectory using a planetary gear mechanism or the like. There is also known a device in which a label can be smoothly taken out from a fixed label magazine by a special movement of the picker.

``Problem to be Solved by the Invention'' However, in the former type of label take-out device, the label magazine swings, which not only makes it complicated to replenish the label magazine with labels, but also makes automatic replenishment difficult. Also, since the label magazine, which is relatively heavy, is oscillated, there is a certain limit to how high the speed can be increased.

On the other hand, in the latter type of label take-out device, since the label magazine is fixed, it is easy to replenish labels and make it automatic, and it is also easy to increase the speed. Since a complicated mechanism such as a planetary gear mechanism is used in the system, adjustment, maintenance, and inspection are complicated and expensive.

"Means for Solving the Problem" In view of such circumstances, the present invention provides a fixed label magazine that stores a large number of labels in a stacked manner by hooking an engaging claw on one side of the labels in the front row, and this fixed label. A pick-up roller that picks up the labels in the front row of the magazine and takes out the picked-up labels from the fixed label magazine according to its own rotation, and a pick-up roller that rotates in synchronization with this pick-up roller and receives the labels picked up by the pick-up roller. a drum, and the pick-up roller is swingable around the center of rotation of the drum;
A driving means for causing the pick-up roller to reciprocate between a suction position where the label in the fixed label magazine is suctioned and a label delivery position which is separated from the suction position and delivers the label suctioned by the pick-up roller to the drum. and set the suction position to a position close to an engaging pawl that hooks one side of the front row label so that one side of the front row label can be sucked, and the label delivery position is separated from the suction position toward the other side of the label so that one side of the label suctioned by the pick-up roller can be pulled out from the engaging claw. It is.

"Function" According to the above configuration, since the label retrieval device according to the present invention is equipped with a fixed label magazine, it becomes easy to replenish labels and automatically replenish them, and it is also easy to increase the speed. . Since the driving means only requires reciprocating the pick-up roller, which is swingably provided around the rotation center of the drum, a conventional fixed label magazine is used, and a complicated mechanism such as a planetary gear mechanism is used. Compared to conventional devices, the structure can be extremely simplified, making adjustment, maintenance, and inspection easier, and moreover, it can be manufactured at a lower cost.

In addition to this, the pick-up roller moves one side of the label picked up by the pick-up roller from the pick-up position to the label delivery position and pulls it out to the other side of the label along the engagement claw. Since the engagement between the two is released, the label can be smoothly taken out from the fixed label magazine.

"Example" The present invention will be described below with reference to the illustrated example.
In FIG. 1, a container (not shown) is conveyed by a conveyor 1 and synchronized with a pasting drum 3 by a timing screw 2. In FIG. On the other hand, a large number of labels L stacked and stored in the fixed label magazine 4 are taken out one by one from the fixed label magazine 4 by a pick-up roller 5 and delivered to the above-mentioned sticking drum 3 via the intermediate drum 6. .

Glue is applied to the back surface of the label delivered to the pasting drum 3 by the pasting roller 7 during conveyance, and then the pasting is done at the contact point between the conveyor 1 and the pasting drum 3. A label is wrapped around the circumferential surface of the container that has been conveyed in synchronization with the drum 3 by the adhesive force of the glue.

Then, the container with the label wrapped around it is placed in guide 8.
The label is conveyed while being rolled between the label and a pad 9 made of sponge or the like, and as a result of this rolling, the label is completely adhered to the outer periphery of the container.

In FIG. 2, the intermediate drum 6 is fixed to a vertical rotating shaft 11 supported by a fixed frame 10, and the fixed frame 10 has a swinging frame 12 which is rotatable about the rotating shaft 11. It is bearing a bearing. A second rotating shaft 13 disposed parallel to the rotating shaft 11 is supported on the swing frame 12, and the pick-up roller 5 is attached to the second rotating shaft 13. are interlocked by gears 14 and 15 attached to each.

The gear 14 attached to the rotating shaft 11 is meshed with a main gear (not shown) integrated with the pasting drum 3,
It is linked to a drive source (not shown) via this main gear. Therefore, the pasting drum 3, the intermediate drum 6, and the pick-up roller 5 can rotate in synchronization with each other, and the pick-up roller 5 swings around the intermediate drum 6 in response to the swing of the swing frame 12. can move.

As shown in FIG. 1, the swing frame 12 includes two protrusions 12a and 12b, and a cam follower 16 is provided at the tip of one of the protrusions 12a, and is fixed to the tip of the other protrusion 12b. frame 10
A spring 17 is loaded between the cam 1 and the cam follower 16, and the repulsive force of the spring 17 causes the swing frame 12 to rotate counterclockwise in FIG.
It is brought into elastic contact with the outer peripheral cam surface of No.8.

As shown in FIG. 2, the cam 18 is fixed to a third rotating shaft 19 that is rotatably supported by the fixed frame 10, and by meshing the gear 20 attached to the rotating shaft 19 with the gear 14. , so that it can rotate in sync with them.

Further, suction holes 5a and 6a for suctioning the label L are opened in the pick-up roller 5 and the intermediate drum 6, respectively.
a are connected to a negative pressure source (not shown) via vacuum passages 21 and 22, respectively. At this time, a control plate 2 provided in the middle of each vacuum passage 21 and 22 and fixed to each of the swing frame 12 and the fixed frame 10
3 and 24 are formed with arc-shaped passages, and the suction holes 5a and 6a of the pick-up roller 5 and the intermediate drum 6 are connected to the negative pressure source only within a predetermined rotation range of the pick-up roller 5 and the intermediate drum 6, respectively. It is now possible to communicate with

The operation of the above configuration will be explained with reference to FIGS. 3a to 3c. In FIG. 3a, when the cam follower 16 is in elastic contact with the large diameter portion 18a of the cam 18, the pick up roller 5 is , is located at a position slightly apart from the labels L in the front row that are stacked and stored in the fixed label magazine 4 and held by the engaging claws 4a.

From this state, as shown in FIG. 3b, when the cam follower 16 moves into the recess 18b of the cam 18, the swing frame 12 rotates counterclockwise, and the pick-up roller 5 The outer circumferential surface of the label L is close to one side surface of the label L in the front row. At the same time, the suction hole 5a of the pick-up roller 5
When the swing frame 12 is swung counterclockwise, the swing frame 12 is rotated at a higher rotation speed than the rotation speed at which the swing frame 12 was kept stationary, and the label is rapidly rotated. You will now be facing L from the front. When the suction hole 5a faces the label L, it is communicated with a negative pressure source through the passage of the control plate 23 and suctions the surface of one side of the label L.

Next, as the cam follower 16 comes out of the recess 18b of the cam 18, the swing frame 12 is rotated clockwise as shown in FIG. Engaging claw 4a of fixed label magazine 4 with one side adsorbed
The label L is swung away from the label L toward the other side, and one side of the label is pulled out from the engagement claw 4a to release the engagement between the two.

At this time, the suction hole 5a of the label L is inserted into the swing frame 12 with the gear 14 of the intermediate roller 6 fixed.
As can be understood from the fact that when the oscillating frame 12 is rotated clockwise, the pick-up roller 5 is rotated clockwise via the gear 15. It is simultaneously rotated in the counterclockwise direction and is maintained in a state facing the paper surface of the label L. As a result, one side of the label L can be smoothly pulled out from the engaging claw 4a.

When the cam follower 16 comes out of the recess 18b, the label L is completely pulled out from the fixed label magazine 4 by counterclockwise rotation of the pick-up roller 5 and delivered to the intermediate drum 6.
At this time, communication between the suction hole 5a on the pick-up roller 5 side and the negative pressure source is cut off, and communication is established between the suction hole 6a of the intermediate drum 6 and the negative pressure source, so that the label L can be delivered smoothly. It will be done. Thereafter, the label L will be affixed to the container via the affixing drum 3 as described above.

In the above embodiment, a cam mechanism is used as a driving means for swinging the pick-up roller 5 about the center of rotation of the drum 6, but a cylinder device, a solenoid, etc. can be used as the driving means.
Furthermore, if necessary, the intermediate drum 6 may be omitted and the label L may be delivered directly from the pick-up roller 5 to the sticking drum 3, and the adhesive force of the glue may be used in addition to the vacuum pressure as the suction force. be able to.

"Effects of the Invention" As described above, since the label take-out device according to the present invention is equipped with a fixed label magazine,
It becomes easier to replenish labels and automatically replenish them, and it is also easier to increase the speed compared to a system in which the label magazine is oscillated.

In addition, since the driving means only requires reciprocating the pick-up roller which is swingably provided around the rotation center of the drum, a conventional fixed label magazine can be used and a complicated mechanism such as a planetary gear mechanism can be used. Compared to conventional devices, the structure can be extremely simplified, making adjustment, maintenance, and inspection easier, and moreover, it can be manufactured at a lower cost.

Further, the pick-up roller moves one side of the label picked up by the pick-up roller from the pick-up position to the label delivery position and pulls it out to the other side of the label along the engaging pawl, so that both sides are moved. Since the engagement is released, it is possible to smoothly take out the label from the fixed label magazine.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the present invention, and FIG.
The figure is a cross-sectional view taken along line - in Figure 1, and Figure 3 is a schematic diagram explaining the operation of the above embodiment, and Figure 3 is a schematic diagram illustrating the operation of the above embodiment.
each indicates a different state. 3... Sticking drum, 4... Fixed label magazine, 5
... Pick-up roller, 6... Intermediate drum, 12
... Swing frame, 14, 15... Gear, 16... Cam follower, 18... Cam, 18b... Recess, L... Label.

Claims (1)

[Scope of Claims] 1. A fixed label magazine that stores a large number of labels in a stack by hooking an engaging claw on one side of the labels in the front row; a pick-up roller that takes out the picked up labels from the fixed label magazine according to the rotation of the pick-up roller; and a drum that rotates in synchronization with the pick-up roller to receive the labels picked up by the pick-up roller; In addition to being able to swing around the center of rotation,
A driving means for causing the pick-up roller to reciprocate between a suction position where the label in the fixed label magazine is suctioned and a label delivery position which is separated from the suction position and delivers the label suctioned by the pick-up roller to the drum. and set the suction position to a position close to an engaging pawl that hooks one side of the front row label so that one side of the front row label can be sucked, and the label delivery position is separated from the suction position toward the other side of the label so that one side of the label suctioned by the pick-up roller can be pulled out from the engaging claw.