JPH02282095A - Cap feeder for capper - Google Patents

Abstract

PURPOSE:To permit an accurate cap transfer by providing a second rotary body with arcuate pocket parts engageable with a roller and concentric with a cap retaining mechanism. CONSTITUTION:At a cap transfer part A for transferring a cap 7 from a picker 8 to a cap retaining mechanism 9, the picker 8 is made movable directly under its position following the cap retaining mechanism 9 movable at a constant speed along a circular track C. A disk 38 provided with a plurality of semicircular pocket parts 37 with which the outer periphery of each of rollers 36 is engageable is fixed to the rotary body 6 of a capper 4, each of the pocket parts 37 is made concentric with the cap retaining mechanism 9 and the inside diameter of the pocket part 37 is made larger than the outside diameter of the cap retaining mechanism 9 so as not to hinder the up and down motion of the cap retaining mechanism 9. This cap feeding method permits an accurate cap transfer even in an attempt to speed up the function of the capper 4.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention provides a method for transferring caps from a picker that is transported around a certain center of rotation to a cap holding mechanism that is transported around another center of rotation. The present invention relates to a cap supply device for a capper.

"Prior Art" Conventionally, a star wheel for feeding containers into a rotary body of a rotary capper is provided with a picker, and the picker conveys the cap on a circular trajectory. A capper is known in which the receiver passes the cap to a cap holding mechanism that is conveyed on a circular trajectory centered on the star wheel, and the cap held by the cap holding mechanism is then capped into a container supplied from the star wheel. It is being

``Problems to be Solved by the Invention'' However, in the conventional capper having this type of configuration, the cap holder transfers the cap from the picker to the cap holding mechanism. Since it is one of the points of contact with the circular movement locus of the mechanism, the time given for passing the bridge is short (this makes it difficult to increase the speed of the capper).

In view of such circumstances, the present invention provides a method for transferring the cap from the picker to the cap holding mechanism.The cap receiver is provided to the transfer section by moving the picker following the cap holding mechanism. This is designed to increase the speed of the capper by increasing the time.

"Means for Solving the Problems" That is, the present invention provides a picker that is provided on a first rotating body to convey the cap, and a second rotating body that is provided on a second rotating body that rotates around a different rotation center from the first rotating body. and a cap holding mechanism that holds the cap from the picker,
In a capper for sealing a container with a cap held by the cap holding mechanism, the picker is provided on the first rotating body so as to be movable in the radial and circumferential directions, and the picker is held in a predetermined position by a spring. Further, a roller is provided on the picker so as to be aligned with the center thereof, and an arcuate pocket portion that can be engaged with the roller is formed on the second rotary body, and the center of the pocket portion of the bracket is provided on the cap holding mechanism. It is aligned with the center of .

"Function" According to the above configuration, the picker is normally held in a predetermined position by a spring, and when the picker approaches the transfer part of the cap in this state, the roller provided on the picker rotates for a second rotation. It comes to engage with an arc-shaped pocket provided on the body.

When the roller completely engages with the pocket, the center of the pocket is aligned with the center of the cap holding mechanism and the center of the roller is aligned with the center of the picker, as described above, so the picker resists the spring. The cap holding mechanism automatically follows the cap holding mechanism.

As a result, the cap's receiver increases the time given to the passer (
Therefore, even if the speed of the capper is increased, the cap can be reliably transferred.

``Example'' The present invention will be described below with reference to an illustrated example. In FIG. 1, a container 2 transported by a transport conveyor l
(see Fig. 3) is synchronized with the capper 4 by the timing screw 3, and then introduced into the rotating body 6 of the capper 4 by the supply star wheel 5, and fixed to the rotating body 6 by a container holding mechanism (not shown). . On the other hand, the cap 7 (see FIG. 3) to be put on the container 2 is transferred from a chute (not shown) to a picker 8 provided on the star wheel 5, and is transported by the picker 8.

The rotating body 6 has a cap holding mechanism 9 (
(See Figures 2 and 3), and this cap holding mechanism 9 is provided on the rotating body 6 so as to be able to rise and fall freely, and is configured to revolve around the rotation center of the rotating body 6 and rotate on its own axis. There is. This cap holding mechanism 9 is
The cap holder holds the cap 7 conveyed by the picker 8 at the transfer portion A, and the cap 7 held by the rotation and descent of the cap holding mechanism 9 is screwed into the opening of the container 2.

When the cap holding mechanism 9 screws the cap 7 onto the mouth of the container 2, the holding of the cap 7 by the cap holding mechanism 9 is released and the cap holding mechanism 9 rises, and the container 2 When the holding is released, the container 2 with the cap 7 is discharged onto the transport conveyor l by the star wheel IO on the discharge side.

The above-mentioned structure and operation are basically the same as those of conventionally known cappers of this type.

However, in this embodiment, as shown in FIG. 2, the cap holding mechanism 9 simply moves on a constant circular movement trajectory C on a plane, but the picker 8
The cap 7 is transferred from the picker 8 to the cap holding mechanism 9.The cap holder moves at a position directly below the cap holding mechanism 9, which moves at a constant speed on the circular movement path C, at the transfer section A. I have to. Therefore, the movement locus B of the picker 8 on the plane is
The cap holder passes the cap 7 from the cap 7 to the cap holding mechanism 9. The cap holder substantially coincides with the circular movement trajectory C of the cap holding mechanism 9 on the plane over a predetermined range of the transfer portion A.

In order to operate the picker 8 following the operation of the cap holding mechanism 9, in this embodiment, the picker 8 is provided so as to be movable in the circumferential direction and radial direction with respect to the star wheel 5. That is, as shown in FIGS. 2 and 3,
Six holders 16 are arranged radially outward on a rotating body 15 (FIG. 3) that rotates together with the star wheel 5 above the star wheel 5, and the inner end of each holder 16 is connected with a bin 17. The picker 8 provided at the tip of each holder 16 can be moved in the circumferential direction of the star wheel 5 by being pivotally supported on the rotary body 15 so as to be swingable. Further, each picker 8 is engaged in a guide groove 18 formed in the length direction at the tip of each holder 16 so that it can freely move forward and backward along the guide groove 18. It is possible to move in any direction.

The picker 8 is slidably engaged in the guide groove 18 of the holder 16, and a spring 1 is elastically loaded between the picker 8 and the holder 16.
The holder 16, which swings about the bottle 17, is normally attached to the rotating body 15 by a tension spring 28. It is held in a position where it abuts against the stopper bin 35. A roller 3 rotatable around the center of the picker 8 is disposed at the bottom of the holder 16.
There are 6.

On the other hand, a disk 38 having a plurality of semicircular pockets 37, each of which is engaged with the outer periphery of the roller 36, is fixed to the rotating body 6 of the capper 4, and the center of each pocket 37 is connected to a cap holding mechanism. 9, and the inner diameter of the pocket portion 37 is set larger than the outer diameter of the cap holding mechanism 9 so as not to obstruct the lifting and lowering of the cap holding mechanism 9.

In the above configuration, when the picker 8 is located at the tip of the holder 16 and the holder 16 is in contact with the stopper bin 35, the cap holder moves on a constant circular movement trajectory B other than the transfer portion A. The picker 8 picks up the cap 7 from a chute (not shown) and picks up the cap 7.
is conveyed along a circular movement trajectory B. When the picker 8 approaches the transfer section A, the holder 1
The roller 36 provided at 6 comes to engage in the pocket portion 37 of the disc 38.

When the roller 36 is completely engaged in the pocket portion 37, the center of the pocket portion 37 is aligned with the center of the cap holding mechanism 9, and the center of the roller 36 is aligned with the center of the picker 8, as described above. The picker 8 automatically follows the position directly below the cap holding mechanism 9. That is, the picker 8 and the holder 16 are connected to the rotating body 1.
As the star wheel 5 rotates, it is moved in the radial and circumferential directions of the star wheel 5 against the springs 19 and 28, respectively, so that the roller 36 remains fully engaged in the pocket 37. can be done, thereby making picka 8
is moved to follow the position directly below the cap holding mechanism 9, which moves at a constant speed on the circular movement trajectory C.

When the picker 8 follows the cap holding mechanism 9 and moves directly below it, the cap holding mechanism 9 is lowered to hold the cap 7, and then the cap holding mechanism 9 is raised again to hold the cap 7. and release the engagement with the picker 8. The movement of the cap 7 at this time is as follows:
Since the cap holder having a predetermined length only needs to be passed within the range of the transfer section A, it is possible to transfer the cap more reliably compared to the conventional device in which the cap is passed at essentially one point. become.

Note that, as is conventionally known, instead of raising the cap holding mechanism 9, it is also possible to lower the picker 8 and release the engagement between the cap 7 and the picker 8. After this, the cap holding mechanism 9 holding the cap 7 is lowered, and the held cap 7 is screwed onto the mouth of the container 2 by its rotation, as described above.

Further, although the above embodiments apply the present invention to a screw capper, the present invention is not limited thereto, and it is of course possible to apply the present invention to crowners and the like.

"Effects of the Invention" As described above, according to the present invention, the cap holder can move the picker accurately following the cap holding mechanism in the transfer section, so the cap holder can take the time given to the transfer. Therefore, even if the speed of the capper is increased, it is possible to securely transfer the cap.

[Brief explanation of drawings]

1 is a schematic plan view showing an embodiment of the present invention, FIG. 2 is an enlarged plan view of the main part of FIG. 1, and FIG. 3 is an enlarged sectional view of the main part of FIG. 1. 2... Container 4... Capper 6.15...
-Rotating body 7...Cap 8...Picker 16...Holder 36...Rollers B, C-...Movement trajectory 9...Cap holding mechanism 19.28...Spring 37...Pocket Part A: The cap holder is the passing section

Claims (1)

[Claims] A picker provided on the first rotating body to convey the cap;
a cap holding mechanism provided on a second rotating body that rotates around a rotation center different from the first rotating body and holding the cap from the picker, and capping the container with the cap held by the cap holding mechanism; In the capper, the picker is provided on the first rotating body so as to be movable in the radial and circumferential directions, the picker is held in a predetermined position by a spring, and the picker is aligned with the center of the picker and a roller is attached to the picker. and an arcuate pocket portion that can be engaged with the roller is formed on the second rotating body, and the center of the pocket portion is aligned with the center of the cap holding mechanism. Cap feeding device.