JP4306867B2 - Label mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, bottles, when attaching the stretch label to be mounted body such as bottles, to label mounting apparatus provided with a label expansion Organization for increasing expansion than the outer diameter of the stretch label to be mounted body.
[0002]
[Prior art]
A label mounting device for mounting a cylindrical stretch label on the outer peripheral surface of a mounted object such as a bottle or a bottle is usually provided with a label expanding mechanism having an opening / closing claw, and a cylinder is attached to the closed opening / closing claw. After inserting the stretch label, the opening and closing claws are opened to expand the stretch label larger than the outer diameter of the attached body, and the attached body is inserted into the expanded stretch label. A stretch label is attached to the body.
[0003]
An example of the label expanding mechanism is shown in FIG. The label expanding mechanism 50 includes an annular disk 51 having a cam groove 52, a sliding member 53 that slides on the annular disk 51 in the radial direction of the annular disk 51, and a stretch fixed to the sliding member 53. A pair of opening and closing claws 54 of the same shape for expanding the label L is provided, and a cam follower 55 that fits into a cam groove 52 formed in the annular disk 51 is attached to the sliding member 53. .
[0004]
Accordingly, when the annular disk 51 is rotated in the direction indicated by the arrow in the drawing by a drive mechanism (not shown), the sliding member 53 is annularly formed by the cam mechanism including the cam groove 52 and the cam follower 55 as shown in FIG. By moving to the inside in the radial direction of the disk 51, the two pairs of opening and closing claws 54 are closed.
[0005]
Then, as shown in FIG. 14, when the cylindrical stretch label L is inserted into the closed open / close claw 54 and the annular disk 51 is rotated in the opposite direction, the two pairs of open / close claws 54 are respectively opened and closed. The stretch label L inserted by the claw 54 is expanded.
[0006]
[Problems to be solved by the invention]
By the way, in this kind of label mounting apparatus, the stretch label L is supplied in a folded state in a sheet shape, and the stretch label L folded in a sheet shape is opened in a cylindrical shape by a predetermined label opening mechanism. In general, the open / close claws are inserted into the open / close claws. However, in the label expanding mechanism 50 as described above, as shown in FIG. 14, the two pairs of open / close claws 54 in the closed state are positioned concentrically. Therefore, when the stretch label L folded in a sheet shape is inserted into such an opening / closing claw 54, the stretch label L folded in a sheet shape is close to a perfect circle in advance as shown in FIG. It is necessary to open large to the state.
[0007]
However, as described above, the supplied stretch label L is folded into a sheet shape so that it has a crease. Therefore, if the both sides of such a stretch label L are sucked and held apart, a perfect circle is obtained. It is difficult to open to a state close to, and there is a problem that the reliability of the work of inserting the stretch label L into the opening / closing claw is lacking.
[0008]
Labels Accordingly, an object of the present invention, without increasing the opening stretch label folded in sheet form to a state close to a perfect circle, having a label expansion Organization that can be fitted to reliably open and close the pawl It is to provide a mounting device.
[0009]
[Means for solving the problems and effects thereof]
In order to solve the above problems, the present invention provides a label opening mechanism for receiving a stretch label folded in a sheet shape and opening it in a cylindrical shape, and a stretch label opened by the label opening mechanism on the outside of the mounted body. and a label expansion mechanism for greater expansion than the diameter, the label expansion mechanism is in a different direction to have a closing claw two pairs of opening and closing, while closing both the opening and closing claw two pairs, that fitted to the opened stretch label to the tubular opening and closing the nails, in the label mounting device adapted to expanding the stretch label by opening both the opening and closing nail two pairs, the label expansion mechanism the label by opening mechanism with a pair of the opening and closing pawl on a line connecting a pair of folds of the stretch label which is open in a cylindrical shape is disposed, the closing pawl closed When the, inwardly in the width direction of the opening pawl in the pair of the opening and closing pawl disposed on a line connecting a pair of the fold of the stretch label, so besides the closing pawl paired enters In the closed state, the width of the other pair of opening and closing claws that enter the pair of opening and closing claws arranged on the line connecting the pair of folds of the stretch label is a pair of the stretch labels. The label mounting apparatus is characterized in that it is smaller than the width of the pair of opening and closing claws arranged on the line connecting the folds .
[0010]
In configuration labels expanding device as described above, in the closed state, the inner side in the width direction of the opening pawl in the pair of open閉爪disposed on a line connecting a pair of folds stretch label vs causes enter the other open閉爪Nasu, since the width of the second on-off pawl smaller than the width of the pair of opening and closing the nails, the area occupied by the opening and closing nail two pairs in a closed state becomes substantially smaller, in sheet form The folded stretched crease label can be securely inserted into the closed opening / closing claw without opening it to a nearly perfect circle, and the stretch label with a small folding diameter can be opened and closed. It is possible to securely insert into the nail .
[0012]
Therefore, this label mounting apparatus is particularly effective when operating at a high speed since the work of mounting the stretch label on the mounted body can be performed smoothly and reliably.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a label mounting system 1 for mounting a cylindrical stretch label (hereinafter referred to as a label) L formed of an elastic stretch film made of polyethylene resin on a PET bottle (hereinafter referred to as a bottle) B. The label mounting system 1 includes a bottle feeder 2 composed of a belt conveyor 7, a star wheel 2a, a screw conveyor 2b, and a star wheel 2c, and a long length fed from a base material roll by a base material feeding portion 3a. A label supply device 3 that sequentially forms the label L while sequentially cutting the label forming base material M and supplies the label L to the first label delivery position α, and the first label delivery position by the label supply device 3 a label delivery device 4 for receiving the label L supplied to α and transporting it to the second label delivery position β, and a bottle supply position γ The bottle B supplied from the bottle supply device 2 is received and conveyed to the bottle delivery position δ, and the label L conveyed by the label delivery device 4 is received at the second label delivery position β. Is transported from the bottle supply position γ to the bottle delivery position δ, and the rotary type label mounting device 5 for mounting the label L on the bottle B and the bottle B to which the label L is mounted by the label mounting device 5 are unloaded. And a bottle conveying device 6 comprising a star wheel 6a, a screw conveyor 6b and a belt conveyor 7.
[0014]
The label-forming base material M is formed by continuously connecting cylindrical labels L attached to the bottle B, and is wound around a drum in a state of being folded into a sheet shape in the base material feeding portion 3a. ing. Further, the sheet-like label forming base material M fed from the base material feeding portion 3a is folded in the middle of its supply so that it can be easily opened into a cylindrical shape when the label L is attached to the bottle B. (See FIG. 1).
[0015]
As shown in FIGS. 1 and 2, the label mounting device 5 is fixed on a concentric circle around the rotation axis via a plurality of support arms 11 and 12 projecting radially from the rotation axis (not shown). A plurality of label mounting heads 10 mounted at intervals are provided, and the cylindrical label L folded into a sheet shape received at the second label delivery position β by each label mounting head 10 is an outer diameter of the bottle B. The expanded label L is attached to the body of the bottle B while the bottle B received at the bottle supply position γ is being transported to the bottle delivery position δ. .
[0016]
The label mounting head 10 includes a label expanding means 20 that expands the cylindrical label L folded in a sheet shape received at the second label delivery position β larger than the outer diameter of the bottle B at the label mounting level. The bottle B placed on the lifting platform 43 at the lower position of the label mounting level at the bottle supply position γ is inserted into the label L expanded at the label mounting level by raising the lifting platform 43. It is comprised from the raising / lowering means 40. FIG.
[0017]
As shown in FIG. 2, the label expanding means 20 receives a label L folded in a sheet shape delivered by the label delivery device 4 at a position directly above the bottle B placed on the lifting platform 43. A label opening mechanism 21 that opens in the shape of a label, and a label expanding mechanism 25 that expands a label L opened by the label opening mechanism 21 larger than the outer diameter of the bottle B by an opening / closing claw 28. The label expanding mechanism 25 is fixedly installed at the label mounting level by the support arm 11, and the label opening mechanism 21 is disposed at a position directly above the label expanding mechanism 25 so as to be movable up and down.
[0018]
As shown in FIGS. 2 to 5, the label opening mechanism 21 is sucked into the clamp member 22 by sucking from a pair of clamp members 22 that can be opened and closed, and a suction port formed in the clamping portion 22 a of the clamp member 22. It comprises a suction means (not shown) for sucking and holding both sides of the sandwiched label L by the clamp member 22, an opening / closing drive means 23 for opening and closing the clamp member 22, and a lifting means 24 for raising and lowering the clamp member 22. The label opening mechanism 21 receives the label L folded in a sheet shape conveyed by the label delivery device 4 when the clamp member 22 sandwiches the label L at the second label delivery position β, and the suction means operates. In this state, the clamp member 22 is opened in a state where both surfaces of the label L are sucked and held by the holding portions 22a. By separating the two sides of the label L to each other, so as to open the label L into a tubular shape.
[0019]
As shown in FIGS. 1 and 3, the label delivery device 4 has a sheet-like label L attached to the tip of an arm that rotates so as to pass through the first label delivery position α and the second label delivery position β. It has a “U” -shaped label adsorbing portion 4a that adsorbs one side, and the label L adsorbed on the label adsorbing portion 4a is sandwiched by the clamping portion 22a of the clamp member 22 and separated from the label adsorbing portion 4a. Thus, the delivery of the label L is performed.
[0020]
As shown in FIGS. 2 to 5, the opening / closing drive means 23 includes a spring 23 a that normally urges the clamp member 22 in the closing direction, and a pair of rollers 23 b that are attached to the base end side of the clamp member 22. And an operating rod 23c to which a cam member 23d having a cam surface that comes into contact with both rollers 23b by being inserted between the rollers 23b is attached to the lower end portion. As shown in FIG. 2, a cam follower 23e that is supported by the support arm 12 so as to be movable up and down and that fits into a cam groove (not shown) is attached to the upper end portion via an attachment arm 23f.
[0021]
In the opening / closing drive means 23 configured as described above, as shown in FIG. 5B, when the cam follower 23e is lowered by the cam groove, the operation rod 23c is lowered accordingly, and the lower end portion of the operation rod 23c. The cam member 23d attached to the roller 23b pushes the roller 23b to open the clamp member 22. Therefore, the clamp member 22 is opened and closed by moving the operating rod 23c up and down by the cam mechanism including the cam groove and the cam follower 23e.
[0022]
As shown in FIG. 2, the elevating means 24 includes an operating rod 24a supported by the support arm 12 so as to be movable up and down, a support member 24b for attaching the clamp member 22 to the lower end of the operating rod 24a, and an operating rod 24a. And a cam follower 24c fitted in a cam groove (not shown) that is attached to the upper portion of the cam by a mounting arm 24d. By moving the operating rod 24a up and down by a cam mechanism comprising the cam groove and the cam follower 24c, the clamp The member 22 is moved up and down.
[0023]
As shown in FIGS. 6 and 7, the label spreading mechanism 25 is slidable in an annular disk 26 having cam grooves 26 a and 26 b rotatably supported by the support arm 11, and in the radial direction of the annular disk 26. A sliding member 27 supported by the sliding member 27 and an opening / closing claw 28 fixed to the sliding member 27 for expanding the label L. The opening / closing claw 28 has a lower end of the label L to be inserted. , The step portions 28c for positioning the label L are formed.
[0024]
Further, cam followers 29 that fit into cam grooves 26a and 26b formed in the annular disk 26 are respectively attached to the sliding member 27, and the cam grooves 26a and 26b are annular as shown by arrows in FIG. The shape is such that the sliding member 27 is moved in the radial direction of the annular disk 26 by the rotation of the disk 26.
[0025]
The open / close claw 28 includes a pair of wide open / close claws 28a and a pair of narrow open / close claws 28b, and the cam groove 26b for moving the narrow open / close claws 28b has a wide open / close claw. Compared to the cam groove 26a for moving 28a, the annular disk 26 has a shape extending to the center. As a result, the opening / closing stroke amount of the opening / closing claw 28b increases, and in the closed state, as shown in FIG. 8, the narrow opening / closing claw 28b enters the inside of the wide opening / closing claw 28a.
[0026]
Accordingly, when inserting the cylindrically opened label L into the closed open / close claws 28a and 28b, as shown in FIG. 9, the label L with folds folded in a sheet shape is formed into an elliptical shape. The opening and closing claws 28a and 28b can be securely fitted into the opening / closing claws 28 only by opening to a certain extent.
[0027]
As shown in FIGS. 6 and 7, a shaft 31 is rotatably supported by the support arm 11 via a bearing 30 on the outside of the annular disk 26. A gear 32 that meshes with teeth formed on the outer peripheral surface 26 and an arm 33 with a cam follower 34 attached to the tip are fixed. The cam follower 34 is fitted in a cam groove 35 formed in an annular plate material disposed along the rotation track of the mounting head 10.
[0028]
Therefore, when the arm 33 is swung by the cam mechanism including the cam groove 35 and the cam follower 34, the gear 32 fixed to the shaft 31 rotates, and accordingly, the annular disk 26 with which the gear 32 is engaged rotates. Therefore, the two pairs of opening and closing claws 28 a and 28 b attached to the sliding member 27 are opened and closed in the radial direction of the annular disk 26 by the cam mechanism including the cam groove 26 a and the cam follower 29.
[0029]
As shown in FIG. 2, the bottle lifting / lowering means 40 includes an operation rod 41 supported by the support arm 12 so as to be movable up and down, and a bottle B attached to the lower end of the operation rod 41 via an attachment arm 42. And a cam follower 45 that is attached to the operating rod 41 via a mounting arm 44 and fits in a cam groove (not shown). The cam mechanism includes the cam groove and the cam follower 45. The elevator 43 is moved up and down by moving the operating rod 41 up and down.
[0030]
In addition, the bottle elevating means 40 holds the bottle B on the elevating table 43 while lowering the elevating platform 43 while the bottle B is placed, while descending in conjunction with the descending operation of the elevating platform 43. The holding means includes an operating rod 46 that is supported by the support arm 12 so as to be movable up and down, and a head that fits into the head of the bottle B attached to the lower end of the operating rod 46. It comprises a holder 47 and a cam follower 49 fitted in a cam groove (not shown) attached to the center of the operation rod 46 via a mounting arm 48, and the operation rod 46 is moved up and down by a cam mechanism comprising the cam groove and the cam follower 49. By moving it, the head holder 47 is moved up and down.
[0031]
As shown in FIG. 1, the label mounting device 5 configured as described above first clamps a cylindrical label L folded into a sheet that has been conveyed to the label delivery position β by the label delivery device 4. The member 22 is received by being clamped, but at the position immediately before the second label delivery position β, as shown in FIGS. 10A and 10B, the mounting head 10 is fixedly installed at the label mounting level. The head holder 47 and the clamp member 22 are positioned above the open / close claw 28, and the mounting head 10 approaches the label delivery position β as shown in FIGS. The clamp member 22 is gradually closed and the opening / closing claw 28 is also closed. As shown in FIG. 5C, when the clamp member 22 grips the label L at the label delivery position β, the label delivery device 4 Receives Luo label L, then the label L is conveyed to the front of the left bottle delivery position δ of the state (see FIG. (D)). In addition, at this time, as shown to the same figure (a)-(d), the bottle B with which the label L was mounted | worn by the previous process is mounted in the raising / lowering base 43, and it shows to the figure (e). In this way, the bottle B with the label L attached is delivered to the bottle transport device 6 at the bottle delivery position δ.
[0032]
Then, as shown in FIG. 5E, the clamp member 22 holding the label L is opened, and after opening the label L into a cylindrical shape, the clamp member 22 and the head holder 47 are gradually lowered. On the other hand, as shown in FIG. 11 (f) (FIG. 11 (f)), at the bottle supply position γ, the label L opened in a cylindrical shape (elliptical shape) is inserted into the open / close claw 28 in the closed state. At the same time, a new bottle B delivered from the bottle supply device 2 is placed on the lifting platform 43.
[0033]
Next, as shown in FIG. 11 (g), the head holder 47 is lowered and the head holder 47 pushes down the label L inserted into the opening / closing claw 28, so that the lower end of the label L is the opening / closing claw 28. Abutting on the stepped portion 28c, the label L is reliably positioned at the label mounting level, and the lifting platform 43 on which the bottle B is placed starts to rise. In addition, when the label L is positioned by the head holder 47, the suction of the clamp member 22 is released, and at the same time, the clamp member 22 is slightly opened, and the suction holding of the label L by the clamp member 22 is released. It is in the state.
[0034]
In this way, when the label L is positioned at the label mounting level, the opening / closing claw 28 is opened as shown in FIG. The head holder 47 rises slightly and waits. When the label L is expanded at the label mounting level, the clamp member 22 is slightly closed, so that the label L is pressed against and held by the opening / closing claw 28, and as shown in FIG. The bottle B rising by the table 43 is inserted into the expanded label L, and the head of the bottle B is fitted into the head holder 47.
[0035]
In this state, since the upper end portion of the label L above the opening / closing claw 28 is in close contact with the outer peripheral surface of the body portion of the bottle B, as shown in FIG. 12 (j) (FIG. 12 (j)) After releasing the gripping of the label L by the clamp member 22, the clamp member 22 is raised, and the label L is held in the bottle B by gripping the upper end portion of the label L that is in close contact with the bottle B together with the bottle B. Is done.
[0036]
Then, as shown in FIG. 12 (k), when the lifting platform 43, the head holder 47, and the clamp member 22 are all raised, the bottle B is temporarily lifted while the clamp member 22 holds the label L on the bottle B. When the opening / closing claw 28 is removed from the label L to cancel the expansion of the label L, the label L is completely attached to the bottle B.
[0037]
Here, when the clamp member 22 is opened, the holding of the label L with respect to the bottle B is released, and as shown in FIG. After retracting the mounted bottle B from the label mounting level, the head holder 47 rises and returns to the original position shown in FIG. 10A, and as described above, at the bottle delivery position δ, the label L The bottle B to which is attached is delivered to the bottle conveying device 6.
[0038]
As described above, the label expanding mechanism 25 employed in the label mounting device 5 adopts a configuration in which the other pair of opening / closing claws 28b enter inside the pair of opening / closing claws 28a in the closed state. In the closed state, the two pairs of opening and closing claws 28a, 28b are arranged in a state close to an ellipse instead of a perfect circle, and the label L with the folds folded in a sheet shape is like a conventional label expanding mechanism. Thus, it is possible to reliably insert and insert into the open / close claws 28 and 28b in the closed state without greatly opening to a state close to a perfect circle.
[0039]
Further, in this label spreading mechanism 25, the width of the opening / closing claw 28b entering the inside of the opening / closing claw 28a in the closed state is made smaller than the width of the opening / closing claw 28a. By further increasing the size, the occupied area of the open / close claws 28a, 28b in the closed state can be further reduced, and the label L having a small folding diameter can be securely inserted into the open / close claws 28 in the closed state. It becomes possible.
[0040]
Therefore, in the label mounting apparatus 5 provided with such a label expanding mechanism 25, a series of mounting operations of the label L to the bottle B is performed by smoothly and reliably inserting the label L into the opening / closing claw 28. Can be performed smoothly and reliably, and is particularly effective when the label mounting device 5 is operated at high speed.
[0041]
In this embodiment, the label expanding mechanism 25 including the two pairs of opening and closing claws 28a and 28b that open and close in the orthogonal direction has been described. However, the present invention is not limited to this, and three or more pairs are provided. It may be a label expanding mechanism provided with an open / close claw.
[0042]
In this embodiment, the opening / closing claw 28 (28a, 28b) is opened / closed by a cam mechanism including the cam grooves 26a, 26b and the cam follower 29. However, the opening / closing claw 28 is not necessarily opened / closed by such a cam mechanism. There is no need to use a link mechanism or the like.
[0043]
Further, in this embodiment, the case where the stretch label is attached to the PET bottle has been described. However, the attached body is not limited to the PET bottle as described above, and the label expanding mechanism and the label attaching apparatus of the present invention. Can be applied when a stretch label is attached to various containers such as bottles and cans and cylindrical bodies.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a label mounting system including an embodiment of a label mounting apparatus according to the present invention.
FIG. 2 is a schematic view showing a label mounting head of the label mounting apparatus of the above.
FIG. 3 is a cross-sectional view showing a label opening mechanism in the label mounting head of the above.
FIG. 4 is a plan view showing a clamp member in the label opening mechanism.
FIG. 5 is a side view showing the opening / closing driving means of the clamp member.
FIG. 6 is a cross-sectional view showing a label expanding mechanism in the label mounting head of the above.
FIG. 7 is a plan view showing the internal structure of the label expanding mechanism according to the first embodiment.
FIG. 8 is a schematic view showing a state in which an opening / closing claw is closed in the above-described label expanding mechanism.
FIG. 9 is a schematic view showing a state in which a stretch label is inserted into the open / close claw in the closed state.
FIG. 10 is an operation explanatory view showing a label mounting operation of the label mounting apparatus according to the embodiment.
FIG. 11 is an operation explanatory view showing a label mounting operation of the above label mounting apparatus.
FIG. 12 is an operation explanatory view showing a label mounting operation of the above label mounting apparatus.
FIG. 13 is a schematic configuration diagram showing a conventional label expanding mechanism.
FIG. 14 is a schematic configuration diagram showing a state in which an opening / closing claw is closed in the label expanding mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Label mounting system 5 Label mounting apparatus 10 Label mounting head 20 Label expansion means 21 Label opening mechanism 25 Label expansion mechanisms 28, 28a, 28b Opening / closing claw 40 Bottle lifting means B Bottle L Stretch label

Claims (1)

A label opening mechanism that receives a stretch label folded in a sheet shape and opens in a cylindrical shape, and a label expansion mechanism that expands the stretch label opened by the label opening mechanism larger than the outer diameter of the mounted body. Prepared,
The label spreading mechanism has two pairs of opening and closing claws that open and close in different directions, and in a state where the two pairs of opening and closing claws are closed together, a stretch label that is opened in a cylindrical shape is inserted into the opening and closing claws. in it are label mounting apparatus adapted for expanding the stretch label by opening both the opening and closing claw two pairs,
The label expanding mechanism includes a pair of the opening / closing claws arranged on a line connecting a pair of folds of the stretch label opened in a cylindrical shape by the label opening mechanism, and when the opening / closing claws are closed. the inside of the width direction of the opening pawl in the pair of the opening and closing pawl disposed on a line connecting a pair of said fold stretch labels are adapted to other of the closing pawl paired enters,
In the closed state, the widths of the other pair of opening and closing claws that enter the inside of the pair of opening and closing claws arranged on the line connecting the pair of folds of the stretch label are a pair of the stretch label. A label mounting device characterized by being smaller than the width of the pair of opening and closing claws arranged on a line connecting folds .

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