JP4307064B2 - Film insertion device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film insertion device that inserts a tubular film such as a label into an insertion object such as a bottle container.
[0002]
[Prior art]
For example, as a label insertion device that inserts a cylindrical label formed of a shrink film into a body portion of a PET bottle, a label folded in a sheet shape and a PET bottle are received and the label is opened. While there are those equipped with a rotary type label insertion unit having a plurality of label insertion heads to be inserted into PET bottles, each label insertion head is as shown in FIGS. 17 (a) to (c), A label opener 61 that opens the label L in the form of a sheet in a cylindrical shape, and four labels L that are opened in a cylindrical shape by the label opener 61 larger than the body of the PET bottle B. A mandrel 62 having an opening / closing bar 62a and a label L expanded by the mandrel 62 are pushed down from the mandrel 62 to The PET bottle B positioned immediately below the barrel 62 and a label positioner 63 to interpolate fit the label L.
[0003]
Further, the PET bottles B supplied one after another to the label insertion unit are fitted into the star wheel 64 or as shown in FIGS. 18 (a) to (c), as shown in FIGS. ), The label L is inserted into the PET bottle B smoothly by being gripped by the pair of gripping arms 65, so that the label L is smoothly inserted into the PET bottle B. Will be done.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-227730 [Patent Document 2]
Japanese Patent Laid-Open No. 2000-238726
[Problems to be solved by the invention]
By the way, in the label insertion apparatus as described above, when the PET bottle B to which the label L is to be inserted is changed to a PET bottle B having a different shape and size from the conventional one, the changed PET bottle B Accordingly, as shown in FIGS. 19 (a) and 19 (b), the positioning recess 64a into which the PET bottle B fits can be replaced with a star wheel 64 having a different size or shape, or FIGS. 20 (a) and 20 (b). As shown in FIG. 4, it is necessary to replace the gripping arm 65 with a gripping portion 65a having a different shape in accordance with the shape and size of the PET bottle B. In such a label insertion device, the PET bottle B can be changed. The accompanying adjustments could not be made easily.
[0006]
In particular, in a label insertion device of the type that includes a rotary type label insertion unit having a large number of label insertion heads and that holds the PET bottle B by the holding arm 65, each label mounted on the label insertion unit Since a pair of gripping arms 65 is provided for each insertion head, when making adjustments associated with the change of the PET bottle B, all of the many gripping arms 65 corresponding to each label insertion head must be replaced. Therefore, there is a problem that adjustment work takes time and effort.
[0007]
Then, the subject of this invention is providing the insertion apparatus of the cylindrical film which can perform the adjustment accompanying the change of the magnitude | size and shape of a to-be-inserted insertion body in view of the problem mentioned above.
[0008]
[Means for solving the problems and effects thereof]
In order to solve the above-mentioned problem, the invention according to claim 1 is a film insertion device for inserting a tubular film into an insertion body held by a holding means, wherein the holding means includes the insertion insertion. An openable / closable gripping arm for gripping a body, and a change mechanism for changing a distance between open / close fulcrums of the gripping arm, and a plurality of film insertion heads for inserting the tubular film into the fitting insert The holding means is provided for each of the film insertion heads, and the changing mechanism interlocks the changing operation of the distance between the opening and closing fulcrum of the gripping arm in the holding means. it is intended to provide a film fitted and wherein the are.
[0009]
As described above, the film insertion device includes a change mechanism for changing the distance between the opening and closing fulcrums in the gripping arm that holds the insertion insert, so that the shape and size of the insertion insertion member are changed. Without changing the gripping arm itself according to the changed insertion object, as in the conventional film insertion device, just changing the distance between the opening and closing fulcrum of the gripping arm using the change mechanism, The inserted insert can be securely held by the same holding arm.
[0010]
Therefore, for example, even when a gripping arm is provided for each film insertion head as in a rotary type film insertion device having a large number of film insertion heads, it is necessary to replace the gripping arms themselves. Therefore, the adjustment accompanying the change of the insertion object can be easily performed in a short time.
[0011]
In particular, the changing mechanism being adapted to interlock the closing distance between supporting points of the changing operation of the gripping arm in a plurality of film fitted head each of the holding means to each other, the operator, each film fitted heads Since there is no need to individually change the distance between the open / close fulcrums of the gripping arm for each holding means corresponding to the above, there is an effect that the adjustment associated with the change of the fitted insert can be performed more efficiently.
[0012]
In addition, when it is necessary to fit a tubular film having a long overall length to the gripping position by the gripping arm of the fit insert, when the tubular film is inserted into the fit insert, fitting must be temporarily canceled gripping of the interposer, or collapsed posture of the fitting interposer at that time, since the fitting interposer may possibly or fall, of the invention according to claim 2 As in the film insertion device, it is desirable to provide the holding means with an upper support mechanism that supports the upper portion of the inserted insert when the holding arm releases the hold of the inserted insert. .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a label insertion device 1 for inserting a cylindrical label L formed of a shrink film into the body of a bottle B. The label insertion device 1 includes a belt conveyor 7, a screw The label L is formed while sequentially cutting the bottle supply unit 2 composed of 2a and the star wheel 2b and the long label forming substrate M fed from the substrate roll by the substrate feeding unit 3a. A label supply unit 3 that sequentially supplies the first delivery position α, a label delivery unit 4 that receives the label L supplied to the first delivery position α by the label supply unit 3 and conveys it to the second delivery position β, and a bottle supply The bottle B supplied from the bottle supply unit 2 at the position γ is received and conveyed to the bottle delivery position δ, and the label delivery unit 4 The rotary label insertion unit 5 that receives the label L conveyed by the second delivery position β and inserts the label L into the bottle B while conveying the bottle B from the bottle supply position γ to the bottle delivery position δ. And a belt conveyor 7 and a number of bottle gripping arms for carrying the bottle B in which the label L is inserted into a heating unit (not shown) for thermally contracting the label L inserted in the bottle B. The bottle conveying unit 6 provided with the bottle delivery means 6a.
[0014]
As shown in the figure, the label delivery unit 4 includes a plurality of take-up members 4a that rotate at a constant rotational speed so as to pass through a first delivery position α and a second delivery position β. The label L supplied to the first delivery position α in the folded state is received by the take-up member 4a being sucked and held, and is conveyed to the second delivery position β.
[0015]
As shown in FIG. 2, the label insertion unit 5 includes an annular bottle mounting table 17 attached to the upper surface of a support plate 16 supported by a rotary shaft 11 via a plurality of support arms 12, and a rotary shaft. A number of label openers 20 and label insertion heads mounted at regular intervals above the annular bottle mounting table 17 via a plurality of support arms 13, 14, 15 that project radially from 11. 30 and a bottle holding means 40 for holding the bottle B mounted on the bottle mounting table 17 directly below the corresponding label opener 20 and the label insertion head 30 at the second label delivery position β. After the cylindrical label L folded into the received sheet is opened by the label opener 20, the bottle B received at the bottle supply position γ is bottlenecked. In the middle of being transported to the bottle delivery position δ, the label is inserted into the body of the bottle B by the label insertion head 30.
[0016]
As shown in FIG. 2, the label opener 20 is folded into a sheet shape by suction from a pair of openable and swayable swing arms 21 each having a gripping part attached to the tip and a suction port formed on the gripping surface. A take-up member of the label delivery unit 4 comprising suction means (not shown) for sucking and holding both surfaces of the label L in the gripped state by the gripping part and opening / closing drive means 22 for opening and closing the pair of swing arms 21. As shown in FIG. 4 (a), the label L folded in a sheet shape conveyed in a state where one side is sucked and held by 4a at the second label delivery position β is shown in FIG. After being received by the gripping part, the swinging arm 21 is opened with the both sides of the label L sucked and held by the gripping part as shown in FIG. By separating the surfaces to each other, so as to open the label L into a tubular shape.
[0017]
As shown in FIGS. 2 and 3, the label insertion head 30 includes four opening / closing rods 31 a that expand the label L opened in a cylindrical shape by the label opener 20 to be larger than the outer diameter of the bottle B. A mandrel 31 and a label positioner 32 that is inserted into the bottle B held by the bottle holding means 40 by pressing down the label L expanded by the mandrel 31 are provided, as shown in FIG. Then, the mandrel 31 in a closed state is inserted into the label L opened by the label opener 20, and subsequently, as shown in FIG. Then, as shown in FIGS. 5E to 5H, the bottle B received at the bottle supply position γ is directly below the label insertion head 30. In lifting state, the label L which is expanded by the mandrel 31 is pushed down by a label positioner 32, is adapted to be inserted into the body of the bottle B.
[0018]
2 and 3, the bottle holding means 40 includes a body gripping mechanism 41 that grips the body of the bottle B placed on the bottle mounting table 17 from the side, and a mouth of the bottle B. The upper support mechanism 45 is configured to support the bottle B by pressing the top surface portion of the closed screw cap from above, and the upper support mechanism 45 is configured such that the body gripping mechanism 41 grips the bottle B. When canceling, the bottle B is supported complementarily.
[0019]
As shown in FIGS. 2 and 5 to 9, the barrel gripping mechanism 41 includes a pair of openable and closable gripping arms 421 a and 421 b that grip the barrel of the bottle B placed on the bottle mounting table 17. The opening / closing mechanism 43 for opening and closing the gripping arms 421a and 421b and the changing mechanism 44 for changing the distance between the opening and closing fulcrums of the gripping arms 421a and 421b are provided. The changing mechanism 44 includes each label opener 20 and The distance between the opening and closing fulcrums of the pair of gripping arms 421a and 421b provided for each label insertion head 30 can be changed simultaneously.
[0020]
An annular upper movable plate 422 and a lower movable plate 423 are arranged in two stages above and below the support plate 16, and the upper movable plate 422 and the lower movable plate 423 have inner ring portions. V-shaped circumferential grooves 422b that are fixed to shafts 424a and 424b attached to the lower surface of the support plate 16 and whose outer ring portions are formed on the inner and outer peripheral surfaces of the upper and lower movable plates 422 and 423, respectively. The plurality of bearings 425a and 425b fitted into the 423b are supported in the vertical direction and the horizontal direction so as to be relatively rotatable with respect to the support plate 16, respectively. Thereby, the upper movable plate 422 and the lower movable plate 423 can be smoothly rotated with a small force.
[0021]
As shown in FIGS. 8 and 9, the pair of gripping arms 421a and 421b are supported by the upper movable plate 422 and the lower movable plate 423 via the bearing members 426a and 426b so as to be rotatably supported. The support plate 16, the upper movable plate 422, and the lower movable plate 423 are formed with openings 16a, 422a, and 423a through which the bearing members 426a and 426b are inserted, respectively.
[0022]
As shown in FIGS. 5 and 7 to 10, the opening / closing mechanism 43 is rotatable about arms 431 a and 431 b attached to lower ends of support shafts 427 a and 427 b that support the gripping arms 421 a and 421 b. A cam mechanism comprising an annular cam plate 433a, 433b having a supported cam follower 432a, 432b and a cam surface against which the cam follower 432a, 432b abuts; a pair of gripping arms 421a corresponding to one label insertion head 30; By sequentially connecting 421b to gripping arms 421b and 421a corresponding to other label insertion heads 30, each pair of gripping arms 421a and 421b is configured by a coil spring 434 that constantly biases the pair of gripping arms 421a and 421b in the closing direction. When the support plate 16 rotates around the rotation shaft 11, the cam mechanism described above Te, the arms 431a, 431b swings, along with this, the support shaft 427a, so 427b is rotated, gripper arms 421a, 421b are opened and closed.
[0023]
As shown in FIGS. 6 and 11 to 13, the change mechanism portion 44 is attached to a screw rod 441 supported by the support plate 16 so as to be rotatable at a fixed position by a support member 442 and to one end of the screw rod 441. And a pair of upper and lower connecting arms 445 having both ends pin-coupled to the nut 444 and the upper movable plate 422, respectively, and both ends of the nut 444 and the lower side. A pair of upper and lower connecting arms 446 that are respectively pin-coupled to the movable plate 423 are provided. When the operation handle 443 is rotated, the nut 444 advances and retreats along the screw rod 441, and accordingly, the connecting arms 445, Since the 446 swings, the upper movable plate 422 and the lower movable plate 423 move relative to each other in the circumferential direction, and the upper movable plate is moved. And pin coupling point of the connecting arm 445 against DOO 422, and a pin coupling point of the connecting arm 446 against the lower movable plate 423, so as to approach away.
[0024]
Therefore, in this bottle holding means 40, by appropriately rotating the operation handle 443, as shown in FIGS. 14A and 14B, the grip arm 421a is moved to the upper movable plate 422 via the bearing member 426a. The distance between the supporting shaft 427a supported and the supporting shaft 427b supporting the grip arm 421b on the lower movable plate 423 via the bearing member 426b, that is, the grip arms 421a and 421b of each pair. The distance between the opening and closing fulcrums can be freely changed within the movable range of the bearing members 426a and 426b penetrating the openings 422a and 423a formed in the upper movable plate 422 and the lower movable plate 423, respectively. Moreover, even when the distance between the opening and closing fulcrums of the gripping arms 421a and 421b is changed, the gripping arms 421a and 421 That no deviated from the axis of the label fitted head 30 the axis of the bottle B to be gripped by 1b.
[0025]
As shown in FIG. 15, the upper movable plate 422 and the lower movable plate 423 are arranged between the upper movable plate 422 and the lower movable plate 423 by a coil spring 434 that biases the gripping arms 421a and 421b in the closing direction. The upper movable plate 422 and the lower movable plate 423 are connected by a coil spring 447 that pulls the upper movable plate 422 and the lower movable plate 423 in the direction opposite to the relative tensile direction, and the tensile force between the upper movable plate 422 and the lower movable plate 423 by the coil spring 434 is connected. Is canceled out by the tensile force between the upper movable plate 422 and the lower movable plate 423 by the coil spring 447, and particularly when moving to oppose the tensile force of the coil spring 434, even if a large force is not applied, The operation handle 443 can be smoothly rotated.
[0026]
As shown in FIGS. 2 and 3, the upper support mechanism 45 is an operation shaft that penetrates through a central portion of a base portion 31b that supports an opening / closing rod 31a in a mandrel 31 mounted on a label insertion head 30 so as to be movable up and down. 451, a drive cylinder 452 for raising and lowering the operation shaft 451, and a pressing portion 453 attached to the lower end portion of the operation shaft 451. When the operation shaft 451 is lowered by the drive cylinder 452, the label insertion head The top surface portion of the screw cap in the bottle B located immediately below 30 is pressed by the pressing portion 453.
[0027]
In this label insertion device 1, in consideration of the fact that a full label covering the body of the bottle B over almost the entire length may be inserted into the bottle B, when the label L is pushed down from the mandrel 31 by the label positioner 32 As shown in FIG. 4 (f), the gripping of the bottle B by the gripping arms 421a and 421b in the body gripping mechanism 41 is temporarily released, but the gripping of the bottle B by the gripping arms 421a and 421b is performed. From the time immediately before releasing the grip until the gripping of the bottle B by the gripping arms 421a and 421b is resumed, as shown in FIGS. Since the bottle B is complementarily supported by being pressed by the pressing portion 453 in the support mechanism 45, the gripping arms 421a, 4 While releasing the grip of the bottle B by 1b, the posture of the bottle B does not collapse or the bottle B falls down, and the label L can be smoothly and reliably inserted into the body of the bottle B. it can.
[0028]
As described above, in the bottle holding means 40 mounted on the label insertion device 1, the pair of gripping arms 421 a and 421 b that grip the bottle B by the change mechanism 44 that constitutes the body gripping mechanism 41. Since the distance between the opening and closing fulcrums can be changed, even if the shape and size of the bottle B are changed, as shown in FIGS. By appropriately rotating the operation handle 443 of 44, the changed bottle B can be reliably secured by the same gripping arms 421a and 421b only by changing the distance (L1, L2) between the opening and closing fulcrums of the gripping arms 421a and 421b. It can be gripped. Therefore, unlike the conventional label insertion device, it is not necessary to replace the gripping arm itself according to the changed shape and size of the bottle, and the adjustment accompanying the change of the bottle B can be easily performed in a short time. It becomes.
[0029]
In particular, the changing mechanism unit 44 can simultaneously change the distance between the open / close fulcrums of a plurality of pairs of gripping arms 421a and 421b provided for each of a large number of label insertion heads 30 by rotating the operation handle 443. Since it is possible, the operator does not need to individually change the distance between the opening and closing fulcrums of each pair of gripping arms 421a and 421b corresponding to each label insertion head 30, and adjustment according to the change of the bottle B Can be performed more efficiently.
[0030]
In the above-described embodiment, when the distance between the opening and closing fulcrums of the gripping arms 421a and 421b is changed, the operation handle 443 of the change mechanism unit 44 is manually rotated. However, the present invention is not limited to this. Instead, the distance between the opening and closing fulcrums of the gripping arms 421a and 421b may be changed by rotating the screw rod 441 by a motor.
[0031]
Moreover, in embodiment mentioned above, although the label insertion apparatus 1 provided with the rotary type label insertion unit 5 which has many label insertion heads 30 was demonstrated, it is not limited to this, This invention is The bottle B can be applied to various label insertion devices that hold the bottle B in a predetermined position by holding the bottle B with a pair of openable and closable gripping arms.
[0032]
Moreover, although embodiment mentioned above demonstrated the label insertion apparatus 1 for inserting and inserting the cylindrical label L in the trunk | drum of the bottle B, it is not limited to this, This invention is cylindrical. Needless to say, this film can be applied to various types of inserted objects.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a label insertion device which is an embodiment of a film insertion device according to the present invention.
FIG. 2 is a schematic diagram showing a label insertion unit in the above-described label insertion device.
FIG. 3 is a detailed view showing a label insertion head mounted on the label insertion unit of the above.
4A to 4H are operation explanatory views showing operations of a label insertion head, a label opener, and a bottle holding unit mounted on the label insertion unit of the above.
FIG. 5 is a partially enlarged plan view showing a body gripping mechanism constituting the bottle holding means.
FIG. 6 is an overall plan view showing an upper movable plate and a lower movable plate constituting the trunk gripping mechanism of the above.
FIG. 7 is an overall plan view showing an opening / closing mechanism of a gripping arm constituting the trunk gripping mechanism.
FIG. 8 is a cross-sectional view showing one gripping arm side in the trunk gripping mechanism.
FIG. 9 is a sectional view showing the other gripping arm side in the trunk gripping mechanism.
FIG. 10 is a partially enlarged plan view showing the opening / closing mechanism section of the above.
FIG. 11 is a detailed view showing a changing mechanism for changing the distance between the opening and closing fulcrums of the gripping arm constituting the trunk gripping mechanism.
FIG. 12 is a cross-sectional view showing the change mechanism portion of the above.
FIG. 13 is a cross-sectional view showing the change mechanism portion of the above.
FIGS. 14A and 14B are operation explanatory views for explaining the operation of changing the distance between the opening and closing fulcrums of the gripping arm. FIGS.
FIG. 15 is a side view showing an attachment state of a coil spring that constitutes the change mechanism portion of the above.
FIGS. 16A and 16B are views showing a state in which bottles of different sizes are respectively held by the same holding arm. FIGS.
FIGS. 17A to 17C are schematic views illustrating a label insertion head, a bottle holding unit, and operations of the label insertion head mounted on a conventional label insertion device.
18A to 18C are schematic views showing other bottle holding means mounted on a conventional label insertion device and its operation.
19 (a) and 19 (b) are explanatory views for explaining problems of the bottle holding means employed in the label insertion device shown in FIG.
20 (a) and 20 (b) are explanatory diagrams for explaining problems of the bottle holding means shown in FIG.
[Explanation of symbols]
1 Label insertion device (film insertion device)
2 bottle supply unit 3 label supply unit 4 label delivery unit 5 label insertion unit 6 bottle transport unit 16 support plate 17 bottle mounting table 20 label opener 30 label insertion head 31 mandrel 32 label positioner 40 bottle holding means 41 body holding mechanism 41 421a, 421b Grip arm 422 Upper movable plate 423 Lower movable plate 425a, 425b Bearing 426a, 426b Bearing member 427a, 427b Support shaft 43 Opening / closing mechanism 431a, 431b Arm 432a, 432b Cam follower 433a, 433b Cam plate 434 Coil spring 44 Change Mechanism part 441 Threaded rod 443 Operation handle 444 Nut 445, 446 Connection arm 447 Coil spring 45 Upper support mechanism 451 Operation shaft 452 Drive cylinder 453 Pressing part B Bottle L Label

Claims (2)

In the film insertion device for inserting the tubular film into the insertion object held by the holding means,
The holding means includes an openable / closable gripping arm for gripping the fitted insert, and a change mechanism for changing a distance between the open / close fulcrums in the gripping arm ,
A plurality of film insertion heads for inserting the tubular film into the insertion object;
The holding means is provided for each of the film insertion heads,
The film insertion device according to claim 1, wherein the changing mechanism is configured to interlock the changing operation of the distance between the opening and closing fulcrums of the gripping arms in the holding means. 2. The film insertion device according to claim 1, wherein the holding unit includes an upper support mechanism that supports an upper portion of the fitting insertion body when the holding arm releases the holding of the fitting insertion body .

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