JPH05330642A - Rotary transfer device for container - Google Patents

Abstract

PURPOSE:To provide a rotary transfer device capable of leading each container smoothly into a device body from a star wheel while supporting the bottom part of the container during the transfer in the device and also capable of coping with the case of allowing the autorotation of a bearer for supporting the bottom part of the container with simple constitution. CONSTITUTION:A rotary frame body 68 is rotatably fitted like a crown to the top part of each elevating shaft 57, and a bearer 69 for supporting the bottom part of a container 40 is fitted to the center part of the rotary frame body 68 in such a way as to be slidable only in the vertical direction. In the lowered state of each elevating shaft 57, the upper face height of the rotary frame body 68 is brought in line with that of the bearer 69, and a specified clearance S is formed between each rotary frame body 68 and the bearer 69. A friction belt of appropriate length is stretched in positions with which the outer peripheral surface of the rotary frame bodies are brought into contact, and the bearer is rotated through contact friction between the friction belt and the outer peripheral surface of each rotary frame (body and the autorotation of the rotary frame body based on the revolution of the rotary frame body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container mouth wrapping device for wrapping a mouthpiece of a container such as a milk bottle with a thermoplastic thin film sheet piece, a filling machine, a capper, a labeler, and a washing bottle. TECHNICAL FIELD The present invention relates to a rotary type transfer device for a container used for transferring the container in various device bodies that perform various work processes on the container such as a machine.

[0002]

2. Description of the Related Art Conventionally, in a rotary type transfer device for a container of this type, an appropriate elevating mechanism is revolved while revolving around a circle having a predetermined radius around the rotation axis of the main body of the device in relation to the working process. There is a case where a container is placed on a pedestal that moves up and down through the container and transferred (Japanese Patent Publication No. 50-11828). By the way, even in a rotary type transfer device in which a pedestal part of this kind moves up and down, the introduction of the container into the device is
It is done from the transport conveyor via the star wheel. Therefore, in order to perform the introduction smoothly, it is necessary to match the upper surface of the pedestal in the introduction area of the rotary type transfer device with the transport surface of the star wheel portion,
The upper surface of the pedestal portion is also generally formed in a flat shape. However, this was problematic in terms of supporting the bottom of the container. In addition, when it is attempted to support the bottom of the container correspondingly, the supporting structure becomes complicated. Further, in the case of further imparting the rotation motion to the pedestal that moves up and down as described above, the configuration related to the bottom support structure of the container and the drive mechanism for rotation has added to the problem.

[0003]

SUMMARY OF THE INVENTION The present invention has been made under the circumstances as described above. With a simple structure, the container can be smoothly introduced, and the bottom of the container is kept in the middle of the transfer in the apparatus. It is an object of the present invention to provide a supported rotary type transfer device, and further to provide a rotary type transfer device which can cope with a case where a rotation motion is given to the cradle with a simple configuration.

[0004]

The invention according to claim 1 is
Arranged around the rotation axis of the main body of the device, freely rotatable with respect to each of the tops of an appropriate number of lifting shafts that revolve around a circle with a predetermined radius and that moves up and down via an appropriate lifting mechanism. The rotary frame is capped on the rotary frame, and a pedestal supporting the bottom of the container is slidably fitted in the central part of the rotary frame only in the vertical direction, and in the lowered position of each of the lifting shafts, The upper surface of the rotary frame and the upper surface of the pedestal are made to have the same height, and a predetermined gap is formed between the rotary frame and the pedestal. Claim 2
In the invention described, a friction belt having an appropriate length is stretched at a position where the outer peripheral surface of the rotary frame contacts, and contact friction between the outer peripheral surface of the rotary frame and the friction belt and revolution of the rotary frame. The pedestal of the container is rotated via the rotation of the rotating frame body based on the above.

[0005]

With the above technical means, the pedestal slides relatively downward by a predetermined gap formed between the rotary frame and the pedestal as the lifting shaft rises, and the pedestal is moved. Since the peripheral portion is formed by the rotating frame body, the bottom portion of the container is supported by the peripheral portion, and the displacement is prevented (Claim 1). Further, as the rotating means of the rotating frame, only the friction belt is stretched at a position where it can come into contact with the outer peripheral surface of the rotating frame within a predetermined range to be rotated, so that the driving means therefor can be omitted. In addition, when a certain load is applied to the rotary frame side, it is easy to prevent slippage and damage to the contact surfaces of the two, and to inspect and clean the part (claim) Item 2).

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a mouth wrapping device for wrapping a sheet piece in the mouth of a container will be described below with reference to the drawings. FIG. 1 is a schematic plan view showing an overall layout of an embodiment of the present invention, which is a conveyor 1, an apparatus body 2 for enclosing a sheet piece in the mouth of a container conveyed by the conveyor 1, and a container. The main elements are a ribbon hooking device 3 for hanging a fastening ribbon on a sheet piece wrapped in the mouth, a sheet piece feeding device 4, and a ribbon feeding device 5. The container conveyed on the conveyer conveyor 1 is transferred to the apparatus main body 2 through the introduction path composed of the star wheel 7 and the guide 8 at a predetermined interval while being timed by the infeed screw 6. In the device body 2,
In the delivery area A, the delivery of the sheet piece is received from the sheet piece supply device 4. In the sheet piece feeding device 4, the belt-shaped sheet 10 is fed from the feeding roll 9 at a predetermined speed by the feeding feed roller 12 and the pinch roller 13 while applying a predetermined tension by the tension roller 11. When the belt-shaped sheet 10 is suction-transferred on the cutting vertical rotary drum 14, it is cut into sheet pieces of a predetermined length by the sheet cutting means 15 using an appropriate cutter such as a heat cutter. This sheet piece is suction-held on the cylindrical outer peripheral surface of the vertical axis rotating drum 16 for delivery, and in the delivery area A, is delivered to the arc-shaped suction-holding surface of the sheet piece suction-holding segment on the apparatus body 2 side. ..
In this case, the vertical axis rotary drum 1 for cutting these
4. As the suction-holding means of the sheet piece in the vertical-axis rotating drum 16 for delivery and the sheet-piece suction-holding segment on the apparatus main body 2 side, there is a means for vacuum suctioning through a through hole formed in the suction surface. Used and the delivery between them is
It is performed by performing on / off control of the vacuum state according to the delivery timing angle. In the figure, reference numeral 17 indicates a spare supply roll.

In the work area B, the segment of the apparatus main body 2 is horizontally rotated while a sheet piece is sucked and held by a mechanism described later, and the mouth of the container is inserted into the opening formed in the segment. As a result, a work step of covering the mouth of the container with the sheet piece is performed. In the heating area C, the hot air sent from the hot air supply means 18 is guided to the sheet piece portion covering the mouth of the container to heat-shrink it. In the cooling region D, cool air from a cool air supply means, which will be described later, is guided to the sheet piece portion for cooling. In this way, the container in which the sheet piece is covered in the mouth is discharged from the discharge area E and is transferred to the ribbon hooking device 3 via the guide path formed by the star wheel 19 and the guide 20. As in the case of feeding the sheet pieces, the ribbon-hanging device 3 is fed with a belt-shaped ribbon 22 from a feed roll 21 while a predetermined tension is applied by a tension roller 23, and a feed roller 24 for feeding. And it is sent out at a predetermined speed by the pinch roller 25. The ribbon 22 is coated with hot melt by a hot melt supply means 26 on the way and then supplied to a known ribbon hanging device 3 to carry out a ribbon hanging operation on a sheet piece portion wrapped in the mouth portion of the container. Is done. The container for which the ribbon hanging operation has been completed is discharged onto the transport conveyor 1 through a discharge path formed by the star wheel 27 and the guide 28. In the figure, reference numeral 29 is a spare supply roll, and 30 is a heating means.

FIG. 2 is a vertical sectional view showing a main part of the apparatus main body 2, and FIG. 3 is a plan view of the same. In the figure, 31 is a fixed shaft, 32 is a rotary shaft, and 33 is a bearing portion thereof. A cam plate 34 is mounted on the fixed shaft 31, and a rotary plate 35 is mounted on the rotary shaft 32. An appropriate number of encapsulating heads 36 are arranged on the outer peripheral portion of the rotary plate 35. This encapsulation head 36
A pressing member 38, which is pressed downward by a spring 37, is slidably built in the inside of the, so that the lifting table 3
By pressing the upper surface of the mouth of the container 40 that moves up and down by 9, the sheet piece 41 is pressed and supported between the pressing member 38 and the upper surface of the mouth of the container 40. An annular sheet piece squeezing member 42 composed of a coil spring or the like is disposed below and inside thereof, and serves to squeeze the sheet piece 41 so as to cover the mouth of the container as the container 40 rises. ..
Further, on the outer side of each encapsulation head 36, a segment 43 having an arc-shaped sheet piece suction holding surface is provided.
It is supported rotatably about a support shaft 45 via.
A connecting rod 46 is connected to the other end of the rotating arm 44 on one side of each segment 43, and the lower arm 47 and the rotating shaft 4 are connected.
It is configured to be rotated by a cam follower 50 that moves along the cam surface formed on the peripheral surface of the cam plate 34 via the 8 and the upper arm 49. In the figure, 51 is a return spring connected to the lower arm 47.
Further, a vacuum pipe 52 for sucking and holding a sheet piece is connected to each segment 43, and is connected to a vacuum means such as a vacuum pump (not shown) via a joining means 53 such as a rotary joint. In the figure, 54 is an opening for inserting the mouth of the container 40 formed in the center of each segment 43, and 55 is the hot air supply means 18 in the heating region C.
An opening for hot air supply communicating with 56, 56 is the joining means 5
3 shows a cold air supply pipe connected to a cool air supply means such as an air blower (not shown) through the reference numeral 3.

Next, the features of the present invention will be described in detail. FIG. 4 is a vertical sectional view showing a supporting mechanism of the lifting platform 39, FIG. 5 is a vertical sectional view showing a raised state of the lifting platform 39, and FIG. 6 is a main part of the lifting platform 39. FIG. In the figure, 57 is an elevating shaft, which is supported by a bearing 59 arranged on a rotation support plate 58 mounted on the rotating shaft 32 so as to be able to move up and down. A cam follower 60 is attached to the elevating shaft 57, and a cam plate fixed to a support body 63 fixed to a table surface 62 or the like on the fixed side of the apparatus body 2 by the urging force of a return spring 61. It is configured to move up and down along the cam surface of 64. In the figure, 65 is the cam follower 60 at the tip.
The vertically attached shaft is inserted into the vertical slit 66 formed in the bearing 59 to guide the elevating shaft 57 in the vertical direction. Further, as shown in FIG. 6, a rotary frame body 68 is rotatably mounted on the top of the elevating shaft 57 via rotary bearing means 67 such as a bearing. A recess is formed in the center of the upper portion of the rotary frame 68, and a pedestal 69 for supporting the bottom of the container 40 is slidably fitted only in the vertical direction. In the figure, reference numeral 70 denotes a leg portion formed on the lower surface of the pedestal 69, and the leg portion 70 is slidably fitted into a fitting hole 71 formed in the rotary frame body 68 so that the pedestal 69 is fixed. The rotary frame 68 is configured to be slidable only in the vertical direction. The leg 70
The lower end of the rotary support plate 5 such as the upper surface of the bearing portion 59 at the lowered position of the elevating shaft 57.
The pedestal 69 and the rotating frame body 68 are brought into contact with the upper surface at a proper position on the 8 side.
Each dimension is set so that a predetermined gap S is formed between the upper surface and the upper surface of the pedestal 69 and the height of the upper surface of the rotating frame 68. In the figure, 72 is a communicating hole for ventilation, and 73 is a friction belt. This friction belt 73
Are means for contacting the outer peripheral surface of the rotary frame body 68 and imparting a rotational motion to the rotary frame body 68, as will be described below.

FIG. 7 is a plan view of an essential part showing an arrangement state of the friction belt 73. In the figure, 74 is a friction belt 7.
3 is an end support portion that supports one end portion of 3. An arm 75 is fixed to the end support portion 74, and the friction belt 73 is held at a position where it can contact the outer peripheral surface of the rotary frame body 68 as shown in FIG. 6 via a guide roller 76 attached to the tip of the arm 75. To do. In the figure, reference numeral 77 is an end portion support portion that supports the other end portion of the friction belt 73. The end support portion 77 supports the other end of the friction belt 73, and a rotation support plate 78 biased in the direction of the arrow in the drawing by a biasing means such as a spring is pivotally supported. As a result, a predetermined tension is applied to the friction belt 73. Further, an arm 79 is supported by the end support portion 77, and a friction belt 73 is supported by a guide roller 80 attached to the tip of the arm 79.
The other end of the is held in place. In addition, this arm 7
9 is rotatably supported and is biased by a spring or the like in the direction of the arrow in the figure, and at the same time, it is maintained at a predetermined position during normal operation by a stopper means (not shown). When the rotary frame 68 is removed during inspection or cleaning of parts, the friction belt 73 can be loosened by rotating the arm 79 against the biasing means such as the spring. , Very convenient.

In the working area B, however, when the container 40 is introduced into the apparatus main body 2 via the star wheel 7, the elevating shaft 57 is at the lower position and the pedestal 6 is provided.
As shown in FIG. 4, the upper surfaces of the rotating frame body 9 and the rotating frame body 68 coincide with each other, so that the introduction from the star wheel 7 can be carried out very smoothly. After that, a work process of covering the mouth of the container 40 with the sheet piece 41 is started. In this case,
Since the elevating shaft 57 immediately rises, a predetermined gap S formed between the rotary frame body 68 and the pedestal 69 along with this rise.
Since the pedestal 69 slides relatively downwards by an amount corresponding to FIG.
As shown in FIG. 6A and FIG. 6B, a rotary frame 68 is provided around the pedestal 69.
To form a peripheral portion. As a result, the bottom of the container 40 is supported and displacement is prevented, so that the subsequent work can be performed under a more stable and favorable transfer state. Further, when moving to the heating region C and the cooling region D, the outer peripheral surface of the rotating frame body 68 comes into contact with the friction belt 73 as shown in FIG. 7, so that this contact friction and displacement due to the revolution of the rotating frame body 68 cause , Rotational movement is added. in this case,
Since a predetermined tension is applied to the friction belt 73 by the rotation support plate 78, an extremely good contact state can be obtained. The rotation motion of the rotary frame 68 is also transmitted to the cradle 69 via the leg portion 70, so that the container 40 can be uniformly heated or cooled while rotating the container 40. In this way, the container 40 that has completed the working process of the apparatus body 2
Is discharged from the discharge area E and transferred to the next process.

[0012]

According to the present invention, the following effects can be obtained based on the above constitution. (1) As the lifting shaft rises, the pedestal slides relatively downward by a predetermined gap S formed between the rotary frame and the pedestal, and rotates around the pedestal. Since the peripheral portion is formed by the frame body, the peripheral portion supports the bottom portion of the container and prevents the displacement (claim 1). (2) As the peripheral edge forming means, the predetermined gap S is formed at the lowered position of the elevating shaft, and the pedestal is simply fitted to the rotary frame in a vertically slidable manner. The configuration is extremely simple (Claim 1). (3) As the rotating means of the rotating frame, only the friction belt is stretched at a position where it can come into contact with the outer peripheral surface of the rotating frame in a predetermined range to be rotated, so that the driving means for that can be omitted. Not only is it simple, but when a certain load is applied to the rotating frame side, it is possible to prevent slippage occurring on the contact surfaces of the rotating frame and destruction, and it is easy to inspect and clean that part. It has utility (claim 2).

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an overall layout of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a main part of the apparatus body in the embodiment.

FIG. 3 is a plan view showing a main part of the apparatus main body with a partial cross section.

FIG. 4 is a vertical cross-sectional view showing a support mechanism of a lifting platform.

FIG. 5 is a vertical cross-sectional view showing a lifted state of the lifting table.

FIG. 6 is a partially enlarged view showing a main part of the lifting table.

FIG. 7 is a plan view of relevant parts showing an arrangement state of a friction belt.

[Explanation of symbols]

1 ... Conveyor 2 ... Device main body 3 ... Ribbon hanging device 4 ... Sheet piece feeding device 5 ... Ribbon feeding device 10 ... Strip-shaped sheet 14 ... Vertical axis rotating drum for cutting 15 ... Cutting means 16 ... Vertical axis rotating drum for delivery 22 ... ribbon ribbon 31 ... fixed axis 32 ... rotating axis 34 ... cam plate 35 ... rotating plate 36 ... encapsulating head 39 ... lifting table 40 ... container 41 Sheet piece 43..Segment for holding sheet piece by suction 44..Pivoting arm 50 ........ Cam follower 57. ... Vertical slit 67 ... Rotating bearing means 68 ... Rotating frame 69 ... Support 70 ... Leg 73 ... Friction belt 74 ... End support 76 ... Guide roller 77 ... End support 78 times Support plate 80 ‥‥ guide roller

Claims (2)

[Claims] 1. An elevating shaft which is arranged around a rotating shaft of a main body of the apparatus and which reciprocates on a circumference of a predetermined radius and elevates through an appropriate elevating mechanism at respective tops of the elevating shafts. A rotary frame is rotatably attached to the rotary frame, a pedestal supporting the bottom of the container is slidably fitted in the central part of the rotary frame only in the vertical direction, and In the lowered position, the heights of the upper surface of the rotary frame and the upper surface of the pedestal are made to coincide with each other, and a predetermined gap is formed between the rotary frame and the pedestal. Transfer device. 2. A friction belt having an appropriate length is stretched at a position where the outer peripheral surface of the rotary frame contacts, and contact friction between the outer peripheral surface of the rotary frame and the friction belt and revolution of the rotary frame. The rotary transfer device for a container according to claim 1, wherein the pedestal of the container is rotated through rotation of the rotating frame body based on the above.