JP4437779B2 - Roll body turntable device - Google Patents

Description

The present invention relates to a roll body turntable device for mounting and fixing a roll body in which various paper and resin tapes such as roll labels are wound in a cylindrical shape.

For example, the roll label type labeling machine shown in FIG. 7 includes a turntable device b for mounting the roll label a.
In general, the turntable device b includes a mounting table c that is mounted with a roll label a and rotates around a vertical axis, and a positioning holder shaft d that protrudes from the center of the mounting table c. The roll label a is dropped from directly above the mounting table c, and the core tube (paper tube) at the center of the roll label a is fitted into the holder shaft d and set.

In the case of a labeling machine, it is necessary to fix the tape firmly because it is pulled out at high speed. If there is a backlash between the core tube of the roll label a and the holder shaft d, the stability of continuous supply of the roll label a is ensured. Can not.
Therefore, in order to eliminate rattling between the core tube of the roll label a and the holder shaft d, conventionally, the following two methods are used.
One of them is a key fixing method in which a wedge-shaped key is inserted between the core tube of the roll label a and the holder shaft d to fix them.
The other is a screw-in fixing method in which a roll body (not shown) is attached to the holder shaft d with screws to fix the roll label a.

The conventional roll body mounting technology described above has the following problems.
(1) The outer diameter of the holder shaft d is set to the inner diameter of the core tube of the roll label a.
For this reason, if the roll label a is tilted even slightly when the roll label a is dropped and set from directly above the mounting table c, or if the centers of both are displaced, the core tube will hit the corner of the holder shaft d. In addition, the frictional resistance between the core tube and the holder shaft d during fitting increases, and smooth mounting cannot be performed.
(2) Both of the two fixing methods described above require a fixing operation such as inserting a key or screwing the lid after the operation of mounting the roll label a on the mounting table c.
Since this fixing work is performed manually by the operator, it takes time and labor to fix the roll label, which is troublesome.
(3) When replacing the roll label a, the core tube is unfixed by removing the key and reversely turning the screw to remove the lid.
Therefore, when replacing with a new roll label a, it is necessary to go through many work steps such as the above-described core tube fixing release operation, roll label a mounting operation, and fixing operation. There is a problem that requires time and effort.
(4) As shown in FIG. 7, in order to automate the labeling machine, two label supply means are provided, and when the remaining amount of one roll label a reaches a set amount, the label supply means is switched to another system. Label tape can be supplied continuously.
However, at present, no proposal of a suitable technique for automating the fixing operation of the roll label a has been made.
For this reason, as described above, the fixing of the roll label a relies on manual work, which hinders full automation of the labeling machine.

The present invention has been made in view of the above points, and an object thereof is to provide a next roll body turntable device.
(1) The roll body can be mounted and fixed at the same time with a simple structure, so that a significant labor saving can be achieved.
(2) The roll body is excellent in setability and exchangeability.
(3) Full automation of a machine equipped with a roll body can be promoted.

1st invention of this application attaches to the mounting table which mounts the roll body which wound up the continuous tape at least , the spindle provided in the center of the mounting table in the perpendicular direction, and the front-end | tip part of a spindle. , comprising a holder device for the inner circumferential surface and capable of abutting positioning of the center hole of the roll body, a turntable device to draw the tape from the roll body that rotates around the support shaft, the holder device A main body that is fixed to the tip of the support shaft and that can be inserted into the center hole of the roll body, a plurality of mounting shafts that project from the side surface of the main body in a direction orthogonal to the support shaft, and a free rotation on the plurality of mounting shafts A plurality of rotating bodies provided on the inner surface of the roll body, and mounting of the roll bodies by rotation of the plurality of rotating bodies, and the edge portions of the outer peripheral surfaces of the plurality of rotating bodies are inscribed in the inner peripheral surface of the center hole of the roll body Multiple rotating bodies from the support shaft so that the fixed roll body can be fixed simultaneously. Characterized in that the distance to the outermost end slightly larger than the inner diameter of the center hole of the roll body, a turntable device of the roll body.
The second invention of the present application is characterized in that, in the first invention, the rotating body of the holder device is a bearing that allows only rotation in the inserting direction of the roll body and restrains rotation in the rotating direction of the roll body. It is a roll body turntable device.
A third invention of the present application is the roll table turntable device according to the first invention or the second invention, wherein the roll body is a labeling roll for winding a label tape.

The present invention has at least one of the following effects.
(1) With a simple structure in which a holder device configured by arranging a plurality of rotating bodies at the tip of a support shaft is provided, the roll body can be obtained by a simple operation by simply inserting the roll body 10. Can be mounted and fixed at the same time, and the conventional fixing work by the operator's manual work such as attaching and detaching keys and lids can be omitted.
(2) Since the fixing work of the roll body can be omitted, the roll body is excellent in setability and exchangeability.
(3) Since the setting (mounting and fixing) of the roll body can be completed simply by placing the roll body, it is possible to promote complete automation of various machines that use the roll body.
(4) Since the outer surface of the rotating body provided in the holder device has an arc shape, even if the roll body is slightly inclined or slightly deviated from the center of the center hole of the roll body, The holder device can be guided and reliably inserted into the center hole of the roll body.
(5) Since the rotating body of the holder device is rotatably provided, the rotating body rotates at the time of setting the roll body, and a large frictional resistance is not generated at the contact portion.
Therefore, the roll body can be set smoothly.
(6) The maximum diameter of the holder device provided at the upper part of the support shaft is formed to be slightly larger than the inner diameter of the center hole of the roll body. Therefore, the frictional resistance (fixing force) with respect to the rotation direction of the roll body is increased and the roll body can be firmly fixed.
Therefore, it can cope with both high-speed rotation and intermittent rotation, and the tape can be stably pulled out from the roll body.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(1) Roll body An example of the turntable device 20 according to the present invention is shown in FIGS.
In FIG. 1, a roll body 10 is obtained by winding a tape 12 having a predetermined total length around the outer periphery of a core tube 11 several times. The starting end of the tape 12 is pulled out and used for various purposes.
The core tube 11 is a cylinder made of paper, resin, metal or the like, and the inner diameter D of the center hole is set to an appropriate diameter according to the use of the roll body 10.
In addition to being formed as a smooth surface, the inner peripheral surface of the core tube 11 may be formed with a number of grooves along the axial direction.
The tape 12 is formed of various materials and is a label sheet or a tag label on which a printing process has been performed.

(2) Turntable device The turntable device 20 is a device for mounting the roll body 10 and for drawing out the tape from the roll body 10. The mounting table 22 is mounted with the roll body 10 and rotates around the support shaft 21. A support shaft 21 provided at the center of the mounting table 22 and a positioning holder device 30 attached to the tip of the support shaft 21 are provided.
The support shaft 21 arranged through the mounting table 22 rotates integrally with the mounting table 22, and the holder device 30 attached to the tip of the support shaft 21 also rotates together with the support shaft 21.
The support shaft 21 may be either an idle type that is supported only through a bearing or a rotary drive type that rotates by receiving a drive from a motor or the like.

(3) Holder Device The holder device 30 includes a main body 31 fixed to the support shaft 21 and a plurality of rotating bodies 32 provided on the side surface of the main body 31.

The main body 31 is a support member for supporting a plurality of rotating bodies 32 at positions spaced apart from the center (rotation center) of the support shaft 21 by a bolt, nut 33, etc. integrally with the tip end portion of the support shaft 21. It is fixed.
In this example, the case where the main body 31 is a square is shown. However, as long as the main body 31 can be inserted into the core tube 11 of the roll body 10, the shape of the main body 31 is not limited.

A total of four idling rotary bodies 32 are provided on a pair of opposite side surfaces of the main body 31, and the plurality of rotary bodies 32 are brought into pressure contact with the inner peripheral surface of the core tube 11 of the roll body 10. The body 10 can be fixed to the holder device 30.
Each rotating body 32 is attached so as to be rotatable about an attaching shaft 34 in a direction orthogonal to the support shaft 21.
A bearing with little backlash is applied to the rotating body 32 and is attached to the mounting shaft 34 by a retaining ring 35 such as a C ring.
The rotation direction of the rotating body 32 allows only the rotation of the roll body 10 in the insertion direction, and can restrain the rotation of the roll body 10 in the rotation direction.

In the case of this example, the relationship between the four rotating bodies 32 is that the distance to the outermost ends of the pair of rotating bodies 32, 32 positioned diagonally of the support shaft 21 is L. It is important that the distance L to the outermost end is set equal to or slightly larger (D ≧ L) than the inner diameter D of the center hole of the core tube 11 constituting the roll body 10.
In other words, the distance (L / 2) from the center of the support shaft 21 to the outermost end of each rotating body 32, 32 is set equal to or slightly larger than the radius d of the center hole of the core tube 11 (d ≧ L / 2).

The dimensional condition of the rotating body 32 with respect to the diameter of the core tube 11 is set as described above. The plurality of rotating bodies 32 are brought into pressure contact with the inner peripheral surface of the core tube 11 of the roll body 10 so that the roll body 10 is held in the holder. This is for fixing to the device 30.
Therefore, as the dimensional difference increases, the pressure at which the rotating body 32 presses against the inner peripheral surface of the core tube 11 of the roll body 10 increases.

The reason why the rotating body 32 whose outer peripheral surface has an arc shape is used for fixing the core tube 11 is to make it easier to insert the holder device 30 into the core tube 11.

(4) Method for setting roll body Next, a method for setting the roll body 10 will be described.
FIG. 3 shows a state immediately before the roll body 10 is set on the turntable device 20, and FIG. 4 shows a state after the setting.
For easy understanding, in FIGS. 3 and 4, a pair of rotating bodies 32 provided in the holder device 30 provided at the diagonal of the support shaft 21 will be described on the same plane.

  As shown in FIG. 3, in a state where the roll body 10 is positioned directly above the mounting table 22 so that the support shaft 21 and the core tube 11 are positioned substantially on the same vertical, the roll body 10 is simply dropped slowly. With this simple operation, the roll body 10 can be mounted and fixed simultaneously.

This will be described in detail.
As described above, the outer surface of the rotating body 32 provided on the side of the holder device 30 has an arc shape.
Therefore, when the holder device 30 is inserted into the center hole of the core tube 11, the outer surface of the rotating body 32 having an arc shape of the holder device 30 and the inner peripheral surface of the core tube 11 are not in contact with each other. A gap is secured in Due to the presence of this gap, the holder device 30 can be smoothly inserted into the core tube 11 even if the roll body 10 is slightly inclined or slightly displaced from the center.

As described above, the maximum diameter passing through the outermost end of the rotating body of the holder device 30 provided on the upper portion of the support shaft 21 is equal to or slightly larger than the inner diameter of the center hole of the core tube 11.
Therefore, when the roll body 10 is further dropped, the inner peripheral surface of the core tube 11 comes into contact with the outer surfaces of the plurality of rotating bodies 32, and the core tube 11 comes into contact with the rotating body 32 at the plurality of locations.

If there is a dimensional difference between the maximum diameter of the holder device 30 and the diameter of the core tube 11, the edge portion of the peripheral surface of the rotating body 32 bites into the inner peripheral surface of the core tube 11 as shown in FIG. To do. Therefore, the frictional resistance (fixing force) in the rotation direction of the roll body 10 is increased.
That is, the rotating body 32 is not a large resistance against the dropping direction of the roll body 10, but is a large resistance element with respect to the rotating direction of the roll body 10.

Further, since the rotating body 32 idles while the roll body 10 is dropped until the lower surface of the roll body 10 is installed on the mounting table 22, no large frictional resistance is generated between the peripheral surfaces of the core tube 11 and the rotating body 32. .
Therefore, the roll body 10 can be smoothly dropped.
In this way, not only the mounting of the roll body 10 but also the fixing operation can be performed simultaneously by simply dropping the core tube 11 of the roll body 10 into the holder device 30 provided on the upper portion of the support shaft 21. In addition, the conventional fixing work by the operator's manual work such as attaching and detaching the key and the lid becomes unnecessary.

After completing the mounting and fixing of the roll body 10, the tape 12 is pulled out from the roll body 10 and used according to the purpose of use as in the prior art.
During the rotation of the roll body 10, since a large frictional resistance is generated between the peripheral surfaces of the core tube 11 and the rotary body 32, it is difficult to cause a slip in the rotation direction between the core tube 11 and the holder device 30, Can be fixed.
Moreover, since the multiple places of the core pipe 11 are pressed down by the rotary body 32, there is no worry about the roll body 10 rattling during rotation.

Further, when the roll body 10 is replaced, it is only necessary to remove the core tube 11 remaining in the holder device 30 of the turntable device 20 and replace the new roll body 10 in the same manner as described above.
Therefore, when the roll body 10 is a roll label shown in FIG. 7, for example, the setting operation of the roll body 10 can be automated to enable the labeling machine to be fully automated.

(5) Other embodiment 1
Other embodiments will be described below. In the description, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

5 and 6 are plan views of other holder devices 30 included in the turntable device 20.
This example is an example in which the number of rotating bodies 32 is changed. FIG. 5 shows an example in which three rotating bodies 32 are equally arranged on the side of the main body 31, and FIG. 6 shows two rotating bodies 32 in the main body 31. An example of deployment on the side is shown.
When three rotating bodies 32 are disposed as shown in FIG. 5, the roll body 10 can be stably fixed by coming into contact with the core tube 11 at six locations equal to or more than the number of the rotating bodies 32 equipped.
5 and 6, the contact portion between the rotating body 32 and the core tube 11 is indicated by a black circle.

Although not shown, four or more rotating bodies 32 may be equally arranged on the side of the main body 31.
In the present invention, two or more rotating bodies 32 may be provided on the side of the main body 31.
Also in this example, the distance from the center of the support shaft 21 to the outermost ends of the rotating bodies 32 and 32 is set to be equal to or slightly larger than the radius of the core tube 11 as described above. It is the same as the form.

(6) Other embodiment 2
In the above-described embodiment, the turntable device 20 is configured by the support shaft 21, the mounting table 22, and the holder device 30, but the mounting table 22 is not essential, and the support shaft 21, the holder device 30, You may comprise the turntable apparatus 20 by.

(7) Other embodiment 3
The holder device 30 may replace the main body 31 with the support shaft 21.
In other words, the support shaft 21 is directly equipped with a plurality of rotating bodies 32.
When configured as in this example, there is an advantage that the main body 31 can be omitted, the number of component parts of the apparatus can be reduced, and the compactness and cost can be reduced.

(8) Other embodiment 4
The roll body 10 may be a coreless type constituted only by the tape 12 without the core tube 11.
Even in the coreless type roll body 10, it is premised that the holder device 30 is inserted into the center of the roll to form a press-contactable center hole, and the dimensional relationship between the two is the same as in the above-described embodiment. It is.

(9) Other embodiment 5
Moreover, the turntable apparatus 20 which concerns on this invention may arrange | position the spindle 21 sideways and set the roll body 10 from a side other than arrange | positioning the spindle 21 toward a perpendicular direction.

Further, the rotating body 31 of the holder device 30 is not limited to a cylindrical shape, but may be a sphere or a hemisphere whose outer peripheral surface has an arc shape.

It is explanatory drawing of embodiment which concerns on invention, Comprising: The perspective view of the turntable apparatus which fractured | ruptured one part Top view of turntable device Longitudinal section of turntable device during roll body setting Longitudinal section of turntable device after roll body is set Explanatory drawing of the other holder device which arranged three rotary bodies equally Explanatory drawing of another holder device in which two rotating bodies are evenly arranged Model diagram of labeling machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Roll body 11 ... Core tube 12 ... Tape 20 ... Turntable apparatus 21 ... Support shaft 22 ... Mounting table 30 ... Holder apparatus 31 ... Body 32 ... Rotating body 34 ... Mounting shaft

Claims (3)

At least a mounting table on which a roll body on which continuous tape is wound is mounted, a support shaft provided in the vertical direction at the center of the mounting table, and attached to the tip of the support shaft, A turntable device that includes a holder device for positioning that can contact an inner peripheral surface, and draws out a tape from a roll body that rotates about the support shaft;
The holder device is fixed to the tip of the support shaft, and a body that can be inserted into the center hole of the roll body;
A plurality of mounting shafts projecting in a direction orthogonal to the support shaft on the side surface of the main body;
A plurality of rotating bodies provided on the plurality of mounting shafts so as to freely rotate,
The roll body can be mounted by rotating the plurality of rotating bodies and the roll body can be fixed at the same time with the edge of the outer peripheral surface of the plurality of rotating bodies inscribed in the inner peripheral surface of the center hole of the roll body. The distance from the shaft to the outermost ends of the plurality of rotating bodies is slightly larger than the inner diameter of the center hole of the roll body ,
Roll body turntable device. Oite to claim 1, wherein the allowed rotation of the holder device only rotation of the insertion direction of the roll body, characterized in that it is a bearing for restraining the rotation of the rotating direction of the roll body, the roll body turntable apparatus. According to claim 1 or claim 2, wherein said roll body is a roll of labels for labeling wound a label tape, the turntable device of the roll body.

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