JPH08133471A - Transfer star wheel provided with inclined plate rail - Google Patents

Abstract

PURPOSE: To provide a star wheel provided with a plate rail to be used in a container carrying device with excellent carrying capacity where the liquid content does not overflow due to the centrifugal force even when passing a transfer star wheel of small diameter. CONSTITUTION: A transfer star wheel 8 of a bottling machine consists of a star wheel which is provided with a number of semicircular recessed part 8a holding each container 31 on its outer circumferential part and rotated, and an arc-shaped container guide to achieve the guide outside of each container 31 held by the star wheel 8, and a plate rail 17 which slides with the containers provided along the container guide being loaded. The plate rail 17 is horizontal at a receiving part (B-B) and a discharging part (D-D) of the container 31, and inclined at the intermediate position (C-C) between the receiving and discharging parts where the outer side is higher, and the inclination of the middle conical surface is successively and smoothly changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a star wheel having a plate rail used for a container transporting device such as a packing machine for packing a liquid in a container.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional example of a bottle conveying device of a bottle filling machine.
And FIG. 5, FIG. 4 is a plan view of this bottle conveying apparatus, and FIG. 5 is a sectional view taken along the line WW of FIG. 4, in which 1 is a bottle, 2 is an inlet conveyor, and 3 is an index. Screw, 4 is a filler for injecting liquid such as drinking water into the bottle, 5 is a capper for covering the bottle, 6 is an outlet conveyor,
7, 8 and 9 are transfer star wheels, and 10, 11 and 12 are bottle guides of the transfer star wheels 7, 8 and 9, respectively. Further, in FIG. 5, 13 is a table, 14 is a rotating shaft of the transfer star wheel 8, 15 is a drive gear, and 16
Is a guide mounting plate, and 17 is a plate rail which is fixed to the guide mounting plate 16 and on which the bottle is slid and conveyed. The bottle 1 is sent by the inlet conveyor 2, and the spacing is indexed by the indexing screw 3 to a predetermined distance, the direction is changed by the transfer star wheel 7 and the bottle guide 10, and the bottle 1 is passed to the filler 4. In the transfer star wheel 7 part, each bottle 1 slides on the plate rail 17 with the half circumference of the body being held in each semicircular recess provided on the outer circumference of the wheel and guided by the bottle guide 10 on the opposite outside. Move in the circumferential direction. Similarly, the filler 4 is held in each recess of the star wheel of the filler 4, and the liquid is injected by being pressed by the filling device (not shown) at the top and bottom. Bottle 1 with filler 4
Is transferred by the transfer star wheel 8 and the bottle guide 11 and passed to the capper 5, where it is capped, then transferred by the transfer star wheel 9 and the bottle guide 12 and passed to the outlet conveyor 6, Sent to the process.

[0003]

In the bottle transporting device of the conventional bottling machine as described above, the bottle is rotated on the circumference of a constant radius by the star wheel portion. This motion is an acceleration motion directed to the center, and a centrifugal force proportional to this acceleration works outward. This acceleration is v ² / r, where r is the radius of the star wheel and v is the linear velocity of the bottle.
Since the linear velocity of the bottle is constant from beginning to end, the acceleration is large in the star wheel portion having a small radius r, and thus a large centrifugal force acts. For this reason, when a liquid is injected with a filler and a bottle whose mouth is open passes through a transfer star wheel part having a relatively small diameter, the liquid level of the liquid inside tilts so that the outside becomes higher due to centrifugal force, In the case of a wide-mouthed bottle, there is a problem that the liquid flows out from the mouth of the bottle, which causes a problem that the carrying capacity of the bottling machine is lowered. Therefore, the present invention solves the problem of such a conventional device, and is used for a container transfer device having a high transfer capability in which the content liquid does not flow out by centrifugal force even when passing through a transfer star wheel having a small diameter. Provided is a star wheel having a plate rail that is driven.

[0004]

Therefore, according to the present invention, a rotating star wheel having a large number of semicircular recesses for holding each container on the outer peripheral portion and an outer side of each container held by the star wheel are provided. In a transfer star wheel such as a bottling machine, which comprises an arc-shaped container guide for guiding and a plate rail for mounting and sliding a container provided along the container guide,
The plate rail is horizontal in the receiving part and the discharging part of the container, has an inclination that the outside is higher at an intermediate position between the two, and has a conical surface in which the inclination gradually changes smoothly in the middle, This is a means for solving the problem. Further, the present invention is characterized in that, in place of the plate rail, a flat plate rail having the same height at the receiving portion and the discharging portion of the container and having a predetermined inclination which becomes a high position at an intermediate position between the both is characterized. This is a means for solving the problem.

[0005]

As soon as the bottle is transferred to the transfer star wheel by the above means, centrifugal force is exerted, the liquid in the bottle is pushed outward and begins to move, and the liquid surface is inclined so that the inside is low and the outside is high, It then exhibits some excessive behavior of rocking back slightly. The inclination of the liquid level starts when the bottle moves to the transfer star wheel and increases as the bottle advances, but at the same time the inclination of the plate rail on which the bottle is placed also increases and the bottle inclines inward, The relative tilting relative to the bottle is offset and relieved so that liquid can be prevented from flowing out of the bottle mouth.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the plate rail of the present invention will be described below with reference to the drawings. Since the container transporting device of the packing machine for packing the liquid into the container equipped with the plate rail of the present invention is almost the same as that shown in FIG. 4 described in the conventional example, the same figure will be referred to, and in this embodiment, the container is a bottle. The wide-mouthed bottle 31 has a wide mouth. Further, the same or similar members as those of the conventional example will be described using the same reference numerals. 1 is a plan view showing the vicinity of the transfer star wheel 8 of FIG. 4, FIG. 2 is a view taken in the direction of arrow A of FIG. 1, where 41 is the star wheel of the filler 4, 51 is the star wheel of the capper 5, and 8 is the transfer. A star wheel, 8a is a semicircular recess for fitting and holding the bottle 31 provided on the outer peripheral portion of the transfer star wheel 8, 17 is a plate rail, 1
7a is a mounting seat fixedly provided on the back surface of the plate rail 17, 18 is a mounting bracket for the plate rail 17, and the bottle guide 11 is not shown (FIG. 5). FIG. 3 is a sectional view of each part of the plate rail 17 for explaining the shape of the plate rail 17.
(A) is a BB cross section (bottle receiving position) and D- in FIG.
The posture of section D (bottle ejection position), or C- in Figure 3 (b)
The posture of the C cross section (intermediate position) is shown, and thus the sliding surface (upper surface) of the plate rail 17 is horizontal at the receiving position where the bottle 31 enters and the discharging position where the bottle 31 exits,
At the intermediate position between the two, it is inclined so that the outside is higher at the inclination angle α, and in the middle of them, it is a conical surface composed of generatrix lines that gradually and smoothly change in the direction of decreasing the inclination angle. In addition,
Point O is the center of transfer star wheel 8 and filler 4
And the same height as the plate rail (not shown) of the capper 5. FIG. 3C shows another modified example of the plate rail 17, which is formed in a conical surface in which the inclination angle of the plate surface sequentially changes, whereas in the present example, the entire intermediate position is It is formed of a flat plate having a predetermined inclination angle α which is located at a high position. The guide 11 may also be tilted in accordance with the tilt of the plate rail.

Next, the operation of the plate rail 17 having the above construction will be described. The bottle 31 is filled with the liquid by the filler 4, the direction is changed by the transfer star wheel 8 along the arrow in FIG. 1, and the bottle 31 is sent to the capper 5 to be capped. When the bottle 31 is transferred from the filler 4 to the transfer star wheel 8, it is instantly changed from clockwise rotation to counterclockwise rotation, and the acceleration is reversed to face the point O and increase in inverse proportion to the large radius of rotation. Bottle 31
The liquid in the inside receives an outward centrifugal force, shifts to the outside, temporarily inclines so that the outside of the liquid surface becomes high, and then slightly returns to perform an excessive motion of rocking. The inclination of the liquid surface starts from the time when the bottle 31 moves to the star wheel 8 and increases as the bottle 31 advances, but the plate rail 1 on which the bottle 31 is placed
Since the inclination of 7 also increases at the same time and the bottle 31 inclines inward, the relative inclination of the liquid level with respect to the bottle 31 is canceled and alleviated. According to the device of the present invention, it is possible to prevent the outflow of liquid even in a bottle. In addition, plate rail 1
The shape of No. 7 is not a conical surface but a plane having a predetermined inclination angle (see FIG.
In the case of (c), the effect of being able to prevent the outflow of the liquid by rapidly inclining the bottle 31 even at the inlet and outlet of the star wheel where the acceleration direction to the bottle 31 changes and the liquid surface is disturbed. Is sufficient, and in this case, there is an advantage that manufacturing is easy.

[0008]

As described in detail above, according to the present invention, since the container is tilted by the plate rail inclined by an angle corresponding to the centrifugal force applied to the container while the star wheel is rotating, the transfer star wheel has a small diameter. Also, it is possible to prevent the liquid from flowing out into the container, and the carrying capacity of the packing machine is not deteriorated. Especially at the container receiving position, the traveling direction of the container suddenly changes from the tangential direction of the packing machine to the tangential direction of the transfer star wheel, and due to this change, the filled liquid level near the mouth of the container is large. Although it sways in the radial direction, by tilting the plate rail, the liquid outflow due to it can be prevented, and it can be delivered to the star wheel of the capper 5 when the movement of the liquid level has settled down, so the liquid outflow is extremely high. Less.

[Brief description of drawings]

FIG. 1 is a plan view of a plate rail in a star wheel according to an embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a cross-sectional view showing a posture of a plate rail.

FIG. 4 is a plan view of a conventional bottle transport device.

5 is a cross-sectional view taken along the line WW of FIG.

[Explanation of symbols]

 8 Transfer star wheel 8a Semi-circular recess 17 Plate rail 31 Wide mouth bottle

Claims (2)

[Claims] 1. A star wheel that has a plurality of semicircular recesses for holding each container on its outer periphery and rotates, and an arc-shaped container guide that guides the outside of each container held by the star wheel. In a transfer star wheel of a bottle-filling machine or the like, which comprises a plate rail for mounting and sliding a container provided along a container guide, the plate rail is horizontal at the container receiving part and the discharging part and at an intermediate position between them. A transfer star wheel having a slope that increases outward and a conical surface where the slope changes smoothly in the middle. 2. The transfer star wheel according to claim 1, wherein, instead of the plate rail, a flat surface having a predetermined inclination, which has the same height in the receiving portion and the discharging portion of the container and becomes a high position at an intermediate position between them. Transfer star wheel, which is equipped with plate rails.