JPH0385290A - Capper - Google Patents

Abstract

PURPOSE:To permit replacement operation to be performed by only replacing a cap closing head instead of a spindle by a method wherein, of a plurality of kinds of cap closing head, at least one kind thereof is provided with an outer peripheral pat connected detachably with a spindle and a shaft part connected detachably with a lift rod. CONSTITUTION:A drive gear 15 is fixedly connected with a fixed shaft 1 by a connecting pin 19. When a rotary body 3 is turned, a spindle 5 is rotated about the fixed shaft 1 together with the rotary body 3 and, by a cam follower 11 in engagement with a cam groove 13 of a lift cam 12 provided on the fixed shaft 1, the fixed shaft 1 of the spindle 5 is moved up and down and, at the same time, the spindle 5 is rotated via a gear 14 in mesh with the fixed drive gear 15. Therefore, the outer peripheral pat 20a of a PP cap closing head 20 provided on the spindle 5 moves upwardly while rotating. On the other hand, since a pressure block 20b of the PP cap closing head 20 is connected detachably with a lift rod 7 and restrained from rotation relative to the rotary body 3, the PP cap can be put on a container.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a capper, and more particularly to a capper that caps a container without rotating a capping head, such as a clutch or seamer. , relates to a dual-purpose capper that can be used as a capper such as a PP (pilfa blue) capper or a screw capper that caps the container without rotating the capping head relative to the container. .

[Prior Art] Conventionally, rotary cappers such as PP cappers and screw cappers, which require the capping head to be rotated relative to the container, have a rotating body rotatably mounted on a fixed shaft;
The rotating body is equipped with a plurality of spindles rotatably arranged at equal intervals on the outer circumference of the body, and a cam follower provided on each spindle is engaged with an elevating cam provided on a fixed shaft, and a cam follower provided on each spindle is engaged with an elevating cam provided on a fixed shaft. By meshing the gear with a drive gear provided on the fixed shaft, the capping head provided on each spindle is moved up and down and rotated by the spindle as the rotating body rotates.

In order to use such a rotating capper as a stationary capper such as the crowner or seamer that does not rotate the capping head relative to the container, the capper must be used as a capper for crowners or seamers. At the same time as replacing the capping head, the rotation of the capping head relative to the rotating body may be stopped.

Conventionally, as described in Japanese Patent Publication No. 52-36469, a spindle for a rotary capper equipped with a cam follower that engages with a lifting cam and a gear that meshes with a drive gear has been developed. The capper head installed in the capper was replaced with a spindle for a stationary capper that omitted gears and the capper head attached to the spindle.

[Problems to be Solved by the Invention] Therefore, during the above-mentioned replacement work, it is necessary to replace the spindle and the capping head provided thereon together, which increases the weight. In a capper equipped with a head, replacing the head is a laborious task. Further, it is necessary to prepare a dedicated spindle and a capping head for each of the rotary type capper and the stationary type capper, which is expensive.

In view of such circumstances, the present invention provides a dual-purpose capper that can be replaced by simply replacing the capping head without replacing the spindle.

[Means for Solving the Problems] In other words, the present invention provides a rotating body rotatably provided on a fixed shaft, a spindle rotatably and movably provided on the rotating body, and a shaft portion of the spindle. an elevating rod that is fitted to the spindle so as to be rotatable and movable up and down, and that is non-rotatable and movable up and down with respect to the rotating body; a lifting cam that is provided on the fixed shaft and that engages with a cam follower provided on the spindle to raise and lower the spindle; and a lifting cam that is rotatably provided on the fixed shaft;
A drive gear that meshes with a gear provided on the spindle, a connecting means that selectively connects the drive gear to a fixed shaft or a rotating body, and a plurality of types of capping heads that are selectively attached to and detached from the spindle. , at least one kind of the capping head among the plurality of types of capping heads is provided with an outer peripheral portion removably connected to the spindle and a shaft portion removably connected to the elevating rod. be.

[Operation] According to the above configuration, when the drive gear is connected and fixed to the fixed shaft by the connection means, when the rotating body is rotated, the spindle rotates with respect to the rotating body via the gear that meshes with the driving gear. will be done. Therefore, by removably connecting a capping head for a PP capper or a capping head for a screw capper to the spindle, the capper can be used as a rotary capper without replacing the spindle.

At this time, the cappering head for the PP capper is removably connected to the spindle and rotationally driven by the spindle, and has an outer circumferential portion where a screw is screwed around the outer circumference of the PP cap, and a shaft portion of this outer circumferential portion. It has an attached shaft part or pressure block which must be pressed against the container to prevent the PP cap from rotating relative to the container. However, this pressure block is removably connected to the lifting rod, and the lifting rod of the bracket cannot rotate with respect to the rotating body, so the pressure block and the urging means cause the PP cap to be attached to the container. It can be held down to prevent it from rotating.

Furthermore, since the screw capper head does not have a shaft portion like the pressure block, the screw capper head may simply be removably connected to the spindle.

Contrary to the above example, when the driving gear is connected to the rotating body by the connecting means, rotation of the spindle with respect to the rotating body can be prevented. Therefore, by removably connecting a crowner capping head or a seamer capping head to the spindle, the capper can be used as a stationary capper without replacing the spindle.

At this time, the capping head for the crowner is removably connected to the spindle and prevented from rotating relative to the rotary body by the spindle, and is provided at an outer circumferential portion for caulking the outer circumference of the crown and at a shaft portion of this outer circumferential portion. It has a shaft portion or head pin which must be pressed to prevent the crown from displacing with respect to the container. However, this head bin is removably connected to the lifting rod, and the lifting rod is not rotatable with respect to the rotating body, so that the head bin and the biasing means displace the crown with respect to the container. You can prevent it from happening.

In addition, since the capping head for a seamer does not have a shaft portion like the above-mentioned radbin, the capping head for a seamer can be simply detachably connected to a spindle.

[Embodiments] The present invention will be described below with reference to the illustrated embodiments. Fig. 1 shows an embodiment in which the present invention is used as a P, P capper, that is, as a rotary capper. In the figure, a fixed shaft l is arranged and fixed in the vertical direction on the machine frame (not shown),
A rotating body 3 is rotatably supported on the fixed shaft 1 via a plurality of bearings 2, and the rotating body 3 can be rotated in one direction by a motor (not shown).

A plurality of guide rods 4 arranged vertically on a predetermined circle centered on the rotation center of the rotor 3 are fixed to the outer circumference of the rotor 3 at equal intervals, and A spindle 5 is arranged at each position. Each spindle 5 is provided on the rotating body 3 so as to be able to move up and down and rotate freely, and a lifting rod 7 fitted into the spindle 5 so as to be able to move up and down and rotate freely is normally moved to a lower end with respect to the spindle 5 by a spring 8 as a biasing means. Holding in position.

One end of the bracket 10 is rotatably attached to the outer periphery of the lower part of the spindle 5, and the other end of the bracket 10 is attached to the adjacent guide rod 4 so as to be able to move up and down to prevent the bracket 10 from rotating together with the spindle 5. . Then, by attaching a cam follower 11 to this bracket IO and engaging the cam follower 11 with the cam groove 13 of the elevating cam 12 fixed to the fixed shaft 1, the spindle 5 can be moved up and down as the rotating body 3 rotates. We are making it possible to do so.

Further, a gear 14 is provided at the intermediate portion of the spindle 5, and this gear is meshed with a drive gear 15 that is rotatably provided with respect to the fixed shaft 1 and the rotating body 3. The drive gear 15 integrally has a flange portion 16 facing outward in the radial direction at its upper end, and the flange portion 16 is integrally connected to an upper disk 17 constituting the rotating body 3 and to the fixed shaft 1. The radial flange 18 is rotatably interposed therebetween.

In this embodiment, the rotary capper P
Since it is used as a P capper, the connecting pin 19 is inserted between the radial flange 18 of the fixed shaft 1 and the flange portion 16 of the drive gear 15 to connect them together. is fixed to fixed shaft 1. As will be described later, when the capper is used as a stationary capper, as shown in the imaginary line in FIG. 1 and in FIG. The upper disc 17 of the rotating body 3 may be inserted between the two to connect them together, so that the drive gear 15 rotates together with the rotating body 3.

Furthermore, a capping head 20 for the PP capper is removably connected to the lower end of the spindle 5, and a protrusion 22 formed at the upper end of the pressure block 20b that presses the PP cap constituting the capping head 20 of the parenthesis is connected to the capper head 20 for the parenthesis. Lifting rod 7
It is removably fitted into a slit 23 formed at the lower end of.

As is conventionally well known, the capping head 20 for the PP capper is detachably connected to the spindle 5 and rotationally driven by the spindle 5, and has an outer circumferential portion 20a on which a screw is screwed around the outer circumference of the PP cap (not shown). and a pressure block 20b provided on the shaft of the outer circumferential portion 20a, and this pressure block 20b must be pressed to prevent the PP cap from rotating against the container (for example, 53-45
(See Publication No. 749). Since the other configurations of the capping head 20 are the same as those conventionally known, further detailed description of the configuration will be omitted.

In order to prevent the pressure block 20b from rotating, a protrusion 22 formed at the upper end of the pressure block 20b is connected to a slit 23 formed at the lower end of the lifting rod 7.
It is removably fitted inside. In the illustrated embodiment, the bracket 24 fixed to the upper end of the lifting rod 7 is attached to the guide rod 4 so as to be able to rise and fall freely.
is prevented from rotating relative to the rotating body 3.

In this embodiment having the above configuration, the drive gear 15 is fixed to the fixed shaft 1 by the connecting pin 19, so when the rotating body 3 is rotated by a motor (not shown), the spindle 5 is integrally connected to the rotating body 3. A gear that meshes with a fixed drive gear 15 at the same time that the spindle 1 of the spindle 5 is raised and lowered by a cam follower 11 that rotates around the fixed shaft 1 and engaged with a cam groove 13 of a lifting cam 12 provided on the fixed shaft l. The spindle 5 is rotated via I4.

Therefore, in this embodiment, the P
The outer circumferential portion 20a of the P-cap capping head 20 moves up and down while rotating, and the pressure block 20b of the PP-cap capping head 20 is removably connected to the elevating rod 7 to prevent rotation relative to the rotating body 3. This prevents P from entering the container, similar to conventionally well-known PP cappers.
It is possible to plug the P cap.

FIG. 2 shows the case where the capper of this embodiment is used as a clutch which is a stationary capper. In this case, the radial flange 18 of the fixed shaft 1 and the flange portion 16 of the drive gear 15 The connecting pin 19 that was inserted between the two is pulled out, and the connecting pin 19 is inserted between the flange portion 16 of the drive gear 15 and the upper disc 17 of the rotary body 3 to connect them together. 15 is made to rotate together with the rotating body 3.

Next, the capping head 20 for the PP capper provided on each spindle 5 is removed, and a capping head 25 for the crowner is attached in its place. At this time, the capping head 25 for the crown is attached to an outer peripheral portion 25 that caulks the outer periphery of the crown (not shown).
a, and a shaft portion, that is, a head bin 25b, provided on the shaft portion of the outer peripheral portion 25a, and the outer peripheral portion 25a is removably connected to a spindle 5, and rotation with respect to the rotating body 3 is prevented by the spindle 5. will be done.

On the other hand, the head bin 25b is pressed so that the crown does not displace with respect to the container by engaging the protrusion 27 formed at the upper end of the head bin 25b into the slit 23 formed at the lower end of the lifting rod 7. I can do something. In FIG. 2, reference numeral 28 denotes a chute that is disposed at a required position and supplies the crown to the capping head 25.

Therefore, in the embodiment shown in FIG. 2, when the rotating body 3 is rotated, the driving gear 15 rotates together with the rotating body 3, so the spindle 5 meshing with the driving gear 15 via the gear 14 Although it is raised and lowered by the force follower 11 engaged with the cam groove 13 of the lifting cam 12, it rotates around the fixed shaft 1 while being fixed to the rotating body 3 in the rotational direction. It is therefore clear that in this case as well, the container can be capped with a crown in the same manner as with conventional clutches.

In the above embodiment, a connecting pin 19 is used as a connecting means for selectively connecting the drive gear 15 to the fixed shaft 1 or the rotating body 3.
is used, but it goes without saying that other appropriate mechanisms can be used. Further, in the above embodiment, the spring 8 is used as a biasing means for biasing and holding the lifting rod 7 at the lower end position with respect to the spindle 5, but any structure may be used as long as the lifting rod 7 can be urged.

Furthermore, in the above embodiment, a capping head 20 for a PP capper is attached to the spindle 5 as a rotating capper, and a capping head 25 for a crowner is attached as a stationary capper. It goes without saying that the screw capper head 30 can be attached as a mold capper, and the seamer capper head 31 can be attached as a stationary capper. These capping heads 30.31 do not have shaft parts such as the pressure block 20b and the head bin 25b like the above-mentioned capping heads 20.25, so each capping head 30.31 is simply connected to the spindle 5. You can connect it to

[Effects of the Invention] As described above, according to the present invention, the replacement work is performed by selectively connecting the drive gear to the fixed shaft or the rotary body, and attaching and removably attaching the capping head to the spindle to the appropriate capping head. It is sufficient to simply replace the head, and in particular, in a capping head that includes an outer circumferential portion and a shaft portion, an elevating rod provided on the shaft portion of the spindle reliably prevents rotation of the shaft portion while applying a biasing force to it. be able to. Therefore, the replacement work is easier than replacing the spindle and the capping head attached to it as one unit, as is the case in the past.Moreover, the spindle can be shared between a rotating capper and a stationary capper. , it is possible to obtain the effect that it can be manufactured at low cost.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an embodiment of the present invention in which a capping head 20 for a PP capper is attached as a capping head;
The figure is a sectional view of another embodiment in which a capping head 25 for a crowner is attached, FIG. The figure is a sectional view of a main part of still another embodiment in which a capping head 31 for a seamer is attached. 1... Fixed shaft 3... Rotating body 5... Spindle 7... Elevating rod 8... Spring (biasing means) 11... Cam follower 12... Elevating cam
14... Gear 15... Drive gear 19... Connecting bottle (connecting means) 20.25.30.31... Capping head 20a, 25
a...Outer peripheral part 20b...Pressure block 25b...Head bin (shaft part) (shaft part)

Claims (1)

[Claims] A rotating body rotatably provided on a fixed shaft, a spindle provided on the rotating body so as to be rotatable and movable up and down, and the above-mentioned an elevating rod that is non-rotatable and movable up and down with respect to the rotating body; a biasing means that biases and holds the elevating rod at a lower end position with respect to the spindle; and a cam follower that is provided on the fixed shaft and provided on the spindle. a lifting cam that engages with the spindle to raise and lower the spindle; a drive gear that is rotatably provided on the fixed shaft and meshes with a gear provided on the spindle; and a drive gear that is selectively attached to the fixed shaft or the rotating body. comprising a connecting means for connecting, and a plurality of types of capping heads that are selectively attached to and detached from the spindle,
At least one type of capping head among the plurality of types of capping heads is characterized in that it includes an outer circumferential portion that is removably connected to the spindle, and a shaft portion that is removably connected to the lifting rod. A capper to do.