JP2580727Y2 - Capping machine bottle control mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle control mechanism for a capping machine, and more particularly to a bottle control mechanism suitable for mounting a pre-screw cap such as a plastic cap.

[0002]

2. Description of the Related Art In recent years, there has been a growing tendency to use synthetic resin caps instead of aluminum caps. Since this synthetic resin cap is a so-called pre-screw cap in which screws are formed in advance, when it is mounted on a container, it is temporarily closed (temporarily screwed) over the container opening, and then the cap is closed with a capping head. It is necessary to screw with a predetermined tightening torque (closing torque) while rotating.

At this time, if the weight of the container is large, the container itself resists the tightening force due to the rotation of the capping head, so that the container is prevented from rotating and a desired tightening torque can be obtained. However, if the container weight is small,
There was a problem that the container could not rotate enough to withstand the rotational force of the capping head, the desired tightening torque could not be obtained, and the container could not be sufficiently sealed. In order to deal with such a problem, the inventors of the present invention have previously described the Japanese Utility Model Application 1-10
No. 3595 proposed a bottle control mechanism for the capping machine shown in FIGS.

This bottle control mechanism is provided with a pocket 2 for accommodating a container A to which a cap is attached,
A center star 1 for transporting the container A under the capping head is provided, and a belt 3 having elasticity and a non-slip effect is stretched across the pockets 2 of the center star 1. According to this bottle control mechanism, when the pre-screw cap is mounted on the container A by the capping head, the container A can be pressed against the belt 3 to prevent rotation, so that the pre-screw cap is mounted with a desired tightening torque. can do.

[0005]

However, in the above-described bottle control mechanism, the tension of the belt 3 stretched over the center star 1 is reduced by the center star 1.
The container A is placed in each pocket 2 within the range of the rotary transport path (the transport path indicated by the pocket accommodating the container A in FIG. 4).
When the container A is accommodated, the tension is adjusted so as to have an appropriate tension. However, if even one of the pockets 2 does not accommodate the container A, the tension of the belt 3 is reduced, and the rotation preventing effect of the container A is obtained. Had the problem of becoming weaker.

In the intake star 4 provided on the upstream side of the transport path of the center star 1, the container A is covered with a cap before the container A is transported and transferred to the center star 1, and the cap A is placed on the outer peripheral surface of the cap. Temporary screwing for turning the cap in the closing direction is performed by bringing the interference member into contact. If the container A is rotated during the temporary screwing of the cap, sufficient temporary screwing cannot be performed. Therefore, it is necessary to take measures to prevent the rotation of the container A for the intake star 4 as in the case of the center star 1. There is.

The present invention has been made in view of the above circumstances, and even if a container comes off during transportation, a belt contacts the container with an appropriate tension against the remaining containers, thereby preventing rotation of each container. The purpose is to provide a bottle control mechanism.

[0008]

The bottle control mechanism according to the present invention includes a plurality of star wheels provided with a plurality of pockets for accommodating containers, and the containers are temporarily screwed to the cap supply device with the plurality of star wheels. In a bottle control mechanism of a capping machine that sequentially transports a container to each position below the capping head of the mechanism and the cap mounting device, the periphery of each pocket of the star wheel is
Setting a plurality of fasteners only, ring having a stop effect sliding elastic
The belt is fixed so that it crosses one pocket
Again and again the container rotation preventing means formed by halides, for each pocket
Are provided independently .

[0009]

[Action] the present invention of the bottle control mechanism, setting a plurality of fasteners to the periphery of the individual pockets of the star wheel,
An annular belt with elasticity and anti-slip effect
Said fastener container rotation preventing means formed by halides in across the packets, because they are provided independently for each pocket, omission of the container to one of the star wheel pocket is generated in the course conveyor In addition, the container rotation preventing means provided in each of the pockets ensures that the belt is in contact with the container with an appropriate tension on the container accommodated in the remaining pockets, thereby reliably preventing the container from rotating.

[0010]

1 shows an embodiment of a bottle control mechanism according to the present invention. In FIG. 1, reference numeral 10 denotes an intake star, reference numeral 11 denotes a center star, and reference numeral 12 denotes a discharge star. Each of these stars 10, 11, 12 is rotated in synchronization with the direction of the arrow in this figure,
Container A is taken into intake side guide 14, left rear guide 15,
It is transported at predetermined intervals along the right rear guide 16 and the discharge side guide 17. The container A supplied from the intake star 10 is covered with a synthetic resin pre-screw cap (hereinafter, referred to as a cap) below the cap supply device B, and then the cap temporary screwing device C is used to cover the outer peripheral surface of the cap cylinder portion. Is pressed to rotate the cap in the closing direction. The temporarily screwed container A is transferred from the intake star 10 to the center star 11, where the cap is fully tightened. The container A that has been fully closed is taken out of the capping machine through the discharge star 12.

Each of these stars 10, 11, 12 has the same main part, and FIG. 2 and FIG. 3 show the intake star 10 or the center star 11. As shown in these figures, these stars 10 and 11 are connected to the right unit 11a.
The left unit 11b and the left unit 11b are assembled by a set screw 20 and attached to the center post 21.
Each unit 11a, 11b of the intake star 11 is constituted by upper star plates 22, 22, lower star plates 23, 23, and spacers 24, 24. A substantially semicircular notch 25 is formed in the outer peripheral portion of the upper and lower star plates 22, 22, 23, 23, and the container A is accommodated by the notches 25, 25 of the upper star plate 22 and the lower star plate 23. A pocket 26 is formed.

[0012] Of these stars 10, 11, 12, each pocket 2 of the intake star 10 and the center star 11 is provided.
6 are provided with container rotation preventing means 29 in which three guide pins 27 fixed to the peripheral upper surface side of the respective notches 25 of the lower star plate 23 are stretched with a belt 28 for preventing rotation. Have been. In the example shown here, three guide pins 2 are attached to one container rotation preventing means 29.
Although seven was used, the number of guide pins 27 is not limited to this, and may be two or more.

As a material for forming the belt 28,
What formed rubber, such as silicone rubber, butadiene rubber, styrene butadiene rubber, and polyurethane rubber, into a thick ring shape is used suitably. The length of the belt 28 is set to such a degree that an appropriate elasticity can be obtained when the belt 28 is stretched over the guide pins 27.

Next, the operation of the bottle control mechanism will be described. The containers A... Sent to the capping machine to attach the caps are stored in each pocket 26 of the intake star 10. Then, the belt 28 stretched over the pocket 26 is connected to the intake star 10.
To the side of the rotating shaft. As a result, the belt 28
Adhere to the peripheral surface of At this time, since the intake side guide 14 is located outside the container A, the container A does not escape from the pocket 26 due to the elasticity of the belt 28. Thus, the container A is accommodated in the pocket 24 in a state where rotation is prevented, and is conveyed by rotation of the intake star 10. The conveyed container A is first covered with a cap below the cap supply device B, and then the interference member is pressed against the outer peripheral surface of the cap cylinder portion by the provisional cap screwing device C, and the cap is rotated in the closing direction to temporarily close the cap. Screwing is performed.

The container A temporarily screwed is the intake star 1
0 to each pocket 26 of the center star 11. In the center star 11 as well as the intake star 10 described above, the container A
The belt 28 adheres to the periphery of the container A to prevent rotation of the container A, thereby performing capping. The container A that has been fully closed is taken out of the capping machine through the discharge star 12.

In the bottle control mechanism of the capping machine, the container rotation preventing means 2 has a guide pin 27 and a rotation preventing belt 28 stretched over each pocket 26 of the intake star 10 and the center star 11.
9 and the belt 28 is configured to be in close contact with the container A accommodated in each pocket 26, so that the contact of the interference member by the cap temporary screwing device C and the capping device D
When the capping is performed, the rotation of the container A is prevented, and the temporary screwing and the capping can be reliably performed. Further, since the container rotation preventing means 29 is provided for each pocket 26, even if the container A comes off in any one of the pockets 26, the tension of the belt 28 does not decrease and a stable container rotation preventing effect is obtained. Demonstrate.

The bottle control mechanism of the capping machine according to the present invention is not limited to the above embodiment. For example, a container rotation preventing means may be separately provided above the upper star plate. The surface of the belt may be provided with a friction increasing means such as providing irregularities on the surface as necessary.

[0018]

As described above, in the bottle control mechanism according to the present invention, a container rotation mechanism in which a belt for preventing rotation is stretched over a plurality of fixtures for each pocket formed in the star of the capping machine. Since the belt is in close contact with the container accommodated in each pocket, the container is prevented from rotating during contact of the interference member by the cap temporary screwing device and capping by the capping device. Screwing and capping can be performed reliably. Further, since the container rotation preventing means is provided for each pocket, even if the container comes off in any of the pockets, the tension of the belt does not decrease and a stable container rotation preventing effect is exhibited.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an embodiment of a bottle control mechanism of the capping machine of the present invention.

FIG. 2 is a plan view showing a main part of the embodiment.

FIG. 3 is a side view showing a main part of the embodiment.

FIG. 4 is a schematic plan view for explaining a conventional bottle control mechanism.

FIG. 5 is a plan view showing a main part of the conventional example.

[Explanation of symbols]

10 ... intake star, 11 ... center star,
12 discharge star, 14 intake guide, 15 left rear guide, 16 right rear guide, 17 discharge side guide, 20 set screw, 21 center post, 22 top Star plate, 2
3 ... lower star plate, 24 ... spacer, 25 ... notch,
26 pockets, 27 guide pins (fixtures), 2
8 ... belt, 29 ... container rotation preventing means, A ... container, B ... cap supply device, C ... cap temporary screwing device.

Claims (1)

(57) [Scope of request for utility model registration] A plurality of star wheels provided with a plurality of pockets for accommodating the container, wherein the plurality of star wheels are used to connect the container to a cap supply device, a temporary screwing mechanism, and a capping head of a cap mounting device. in bottles control mechanism of capping machine for sequentially conveying the containers to a position, the only setting a plurality of fasteners to the periphery of the individual pockets of the star wheel, an annular belt having a locking effect sliding elastic
Over the fixture across one pocket
Bottle control mechanism of capping machine container rotation preventing means formed by, is characterized by providing <br/> independently for each pocket.