JPH0664687A - Capping machine - Google Patents

Abstract

PURPOSE:To eliminate exchanging work of a spindle even when a cap to be handled is changed by using a common spindle in either case that a rolled-on cap or a prescrewed cap is mounted. CONSTITUTION:A common cam groove 30 is formed to pass a starting point A1 and an end point A2 of a capping zone A for RO needed for rotating a head set by a necessary amount for mounting a rolled-on cap, and also a starting point B1 and an end point B2 of a capping zone B for PS positioned to sandwich the capping zone A for RO and needed for rotating the head set by a necessary amount for mounting a prescrewed cap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capping machine capable of mounting a roll-on cap and a pre-screw cap on a bottle mouth by using a common spindle and cam.

[0002]

2. Description of the Related Art Today, roll-on caps and pre-screw caps are widely used as caps that can reclose the bottle mouth if necessary. The roll-on cap is generally formed of an aluminum plate in a cylindrical shape with a bottom, and the screw corresponding to the screw of the bottle mouth after being covered with the bottle mouth,
It is rolled by pressing a roller from the outer periphery. On the other hand, the pre-screw cap is preliminarily formed on its inner peripheral surface with a screw to be screwed into the screw of the bottle mouth.

When the roll-on cap is attached to the bottle mouth, a headset provided with a roller for rolling a screw is pressed against the cap to rotate the headset about 1.7 times. On the other hand, when attaching the pre-screw cap to the bottle mouth, it is necessary to rotate the headset holding the cap about 2.5 times. If the headset is rotated 2.5 times when the roll-on cap is attached to the mouth of the bottle, the peripheral wall of the cap may be easily cut off. On the other hand, if the pre-screw cap is attached to the bottle mouth with 1.7 revolutions, it is difficult to obtain sufficient sealing performance. When the roll-on cap is installed on the bottle mouth and the pre-screw cap is installed on the bottle mouth, the required headset rotation speed is different. I was using it.

However, since it is inconvenient to replace the capping machine every time the cap is changed,
There has been a demand for a capping machine that can be fitted with any cap. In order to meet this demand, the present inventor proposed a capping machine shown in FIG. 3 in Japanese Patent Application No. 2-103815. In this capping machine, when a roll-on cap is attached to a tower portion 18 in which a cylindrical upper cam 2, a middle cam 3 and a ring gear 17 are attached to a main shaft portion 1, a single cam type as shown on the right side in the drawing is used. A roll-on cap spindle (hereinafter abbreviated as RO spindle) 5 is mounted, and when a pre-screw cap is mounted, a pre-screw cap spindle (hereinafter abbreviated as PS spindle) 6 as shown on the left side of the drawing is mounted. Is used. The RO spindle 5 has a cam floor 7 for controlling a height position of the RO spindle 5 provided on the upper cam 2 for a roll-on-cap cam groove (hereinafter, abbreviated as RO cam groove) 8
It is attached to the tower portion 18 in a state of being fitted to. The PS spindle 6 has a cam floor 9
Is fitted in a pre-screw cap cam groove (hereinafter, referred to as PS cam groove) 10 for controlling the height position of the PS spindle 6 provided in the middle cam 3, and is attached to the tower portion 18. It is installed. The RO spindle 5 and the PS spindle 6 are provided with driven gears 20 and 21, respectively, and these driven gears 20 and 21 are engaged with the ring gear 17 of the tower section 18. When the spindle 5 or 6 revolves around the tower portion 18, the rotary shaft members 23 and 24 of the spindles 5 and 6 are rotated by the action of the ring gear 17 and the driven gear 20 or 21. .

An RO headset 13 for mounting a roll-on cap is mounted on the lower end of the RO spindle 5, and this RO headset 13 is provided with a roller 15 for rolling a screw on the roll-on cap. ing. Also, a PS headset 1 for mounting a pre-screw cap on the lower end of the PS spindle 6
4 is installed.

Next, the RO cam groove 8 and the PS cam groove 10
The shape will be described with reference to FIGS. 4 to 6.
The RO cam groove 8 is formed as follows. That is, the amount of rotation required to mount the roll-on cap (that is, about 1.7 rotations), the capping section required to rotate the RO headset 13 (hereinafter, RO).
The RO spindle 5 is formed so as to be lowered so that the RO headset 13 passes through a height position where the RO headset 13 can be thread-rolled at a starting point A1 of A). Here, the thread-rollable state means that the pressure block 25 of the RO headset 13 is pressed against the roll-on cap 26, whereby the roller unit 41 provided with the roller 15 moves upward with respect to the roller shifting cam 11. As a result, the state where the roller unit 41 shifts to the inner side and the roller 15 is pressed against the roll-on cap 26 to enable the rolling of the screw. Further, this RO cam groove 8 is the end point A2 of the RO capping section A,
The RO spindle 5 is formed so as to rise so that the RO headset 13 passes through a height position at which the thread cannot be rolled. Here, the RO headset 13 being incapable of thread rolling means a state in which the roller 15 of the RO headset 13 is separated from the peripheral surface of the roll-on cap and thread rolling is impossible.

On the other hand, the PS cam groove 10 has a capping section (hereinafter referred to as a PS capping section) required to rotate the PS headset 14 by a rotation amount required for mounting the pre-screw cap (that is, about 2.5 rotations). At the starting point B1 of B), PS
The headset 14 passes through the height position where the screwing of the pre-screw cap 28 with the container opening can be started and PS
So that the spindle 6 moves downward, and
PS headset 1 at the end point B2 of the S capping section B
The PS spindle 6 is controlled so that the PS spindle 6 rises when 4 passes a height position away from the pre-screw cap 28.

[0008]

In such a conventional capping machine, the RO spindle 5 is attached to the RO cam groove 8 when handling the roll-on cap 26, and the PS spindle 6 when handling the pre-screw cap 28. Since it has to be attached to the PS cam groove 10, it is necessary to replace the spindle each time the cap to be handled is changed, which is troublesome. Further, it is necessary to provide two types of cam grooves in the machine body, which causes a problem of cost increase.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a capping machine which can use the same spindle both when handling a roll-on cap and when handling a pre-screw cap.

[0010]

As a result of intensive studies, the inventor of the present invention utilizes the fact that the upper position of the pre-screw cap to be mounted is higher than the upper position of the roll-on cap to be mounted. I realized that I could achieve my purpose. That is, the capping machine of the present invention has a control line for the roll-on cap, and further, a capping amount required to rotate the headset when the pre-screw cap is mounted so as to sandwich the capping section of the roll-on cap. The start and end points of the section are set, and at the start point of the capping section of this pre-screw cap, lower the spindle so that the headset passes through the height position where screwing of the pre-screw cap with the container mouth part can be started. The capping machine is characterized in that the spindle is raised so that the headset passes through a height position away from the pre-screw cap at the end of the capping section of the screw cap.

[0011]

Since this capping machine is constructed as described above, when the spindle moves forward along the control line, first, at the starting point of the capping section for the pre-screw cap, the container mouth of the pre-screw cap is inserted. Since the spindle descends so that the headset passes through the height position where screwing can be started, screwing of the pre-screw cap to the bottle mouth can be started when the pre-screw cap is handled. However, in the case of the roll-on cap, the position where the headset can be thread-rolled is lower than that in the case of the pre-screw cap, and therefore, the mounting of the roll-on cap in the bottle mouth is not started at this point. Then, when the spindle further advances along the control line and passes the start point of the capping section of the roll-on cap, the spindle passes through the height position where the headset can be thread-rolled, and the spindle rolls down. If it is being handled, the roll-on cap will be attached to the bottle mouth from this point. When the pre-screw cap is attached, the screwing of the pre-screw cap to the bottle mouth is continued at this point. As is well known, the excessive amount of lowering of the spindle during this period is absorbed by the top pressure spring provided on the spindle.

Thereafter, when the spindle further advances, the spindle passes the end point of the capping section of the roll-on cap. Then, the head set passes through the height position at which the thread cannot be rolled, and rises. Therefore, when the roll-on cap is being handled, the mounting of the roll-on cap ends here. On the other hand, the screwing of the pre-screw cap is because the height position of the spindle when the pre-screw cap and the headset are separated is higher than that of the roll-on cap, so the spindle further advances and the capping section of the pre-screw cap. It is performed until it passes the end point of.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The capping machine of the present invention will be described in detail below with reference to the drawings. The same components as those of the conventional example are designated by the same reference numerals to simplify the description. (Embodiment 1) In the capping machine of this embodiment, as shown in FIG. 1, only the upper cam 2 is provided in the tower portion 18, and the middle cam 3 provided in the conventional capping machine is abolished. ing. The upper cam 2 is provided with a roll-on cap / pre-screw cap common cam groove (hereinafter, abbreviated as common cam groove) 30. The cam floor 40 of the common spindle 31 is fitted in the common cam groove 30. When handling the roll-on cap, the RO headset 13 is attached under the shared spindle 31 as shown on the right side in FIG. 1, and when handling the pre-screw cap, as shown on the left side in FIG. Attach the PS headset 14.

Generally, since the roll-on cap is simply formed in a cylindrical shape with a bottom, when the roll-on cap is covered with the bottle mouth, it immediately enters the deepest state, and capping is started from this state. On the other hand, since the screw formed on the inner surface of the pre-screw cap hits the screw of the bottle mouth and cannot enter,
Capping starts from a state where the bottle mouth is covered shallowly.
Therefore, comparing the position of the cap top surface at the start of capping, as shown by H in FIG. 1, the pre-screw cap 28 is higher.

Utilizing such a fact, in this embodiment,
As shown in FIG. 2, the common cam groove 30 is formed so as to descend in two steps and rise in two steps. In the common cam groove 30, the start point A1 and the end point A2 of the RO capping section A are provided on the lower inclined portions 33 and 34 below the landing portions 38 and 32. The start point A1 and the end point A2 of the RO capping section A are separated by the amount of rotation required to mount the roll-on cap, the distance required to rotate the headset, and the horizontal direction. At the start point A1 of the RO capping section A, the common spindle 31 passes through the height position at which the RO headset 13 is in a thread-rollable state and descends. At the end point A2 of the RO capping section A, the RO headset 13 is The common spindle 31 passes through the height position where the thread cannot be rolled and rises.

Landing portions 38, 32 of the common cam groove 30
The start point B1 and the end point B2 of the PS capping section B are arranged on the upper inclined portions 35 and 36 located on the upper side. The start point B1 and the end point B2 sandwich the RO capping section A. The starting point B1 and the ending point B2 are the rotation amount PS required when the pre-screw cap is attached.
They are separated by the distance required to rotate the headset 14. At the start point B1 of this PS capping section B, P
The common spindle 31 passes through a height position where the S headset 14 can start screwing the pre-screw cap to the container opening. Further, at the end point B2 of the PS capping section B, the common spindle 31 passes the height position where the PS headset 14 is separated from the pre-screw cap.

This capping machine has a common cam groove 30.
Is configured as described above, the shared spindle 3
When 1 moves forward along the common cam groove 30, first PS
At the starting point A1 of the capping section B, the PS headset 14 passes through a height position where screwing of the pre-screw cap 28 with respect to the container mouth portion can be started and descends.
The screwing to the bottle mouth of No. 8 can be started. However, since the position where the RO headset 13 can be thread-rolled is lower than the position where the PS headset 14 can start screwing the pre-screw cap 28, the mounting of the roll-on cap 26 on the bottle mouth is not started at this point. . Then, when the common spindle 31 further advances along the common cam groove 30 and passes the starting point A1 of the RO capping section A, R
Since the common spindle 31 descends so that the O headset 13 passes through the height position at which the thread can be rolled,
When handling the roll-on cap 26, the mounting of the roll-on cap 26 on the bottle mouth is started from this point. When the pre-screw cap 28 is being handled, the screwing of the pre-screw cap 28 to the bottle mouth is continued at this point as well. The surplus lowering amount of the common spindle 31 during this time is absorbed by the top pressure spring 42 provided in the common spindle 31, as is known.

After that, when the common spindle 31 further advances, the common spindle 31 passes the end point of the RO capping section A. Then, the roller 1 of the RO headset 13
5 is separated from the roll-on cap 26 and passes through a height position where the thread cannot be rolled, and the common spindle 31
When the roll-on cap 26 is handled, the mounting of the roll-on cap 26 ends here. On the other hand, the pre-screw cap 28 is screwed into the pre-screw cap 28 and the PS headset 1.
Since the height position of the common spindle 31 when 4 is separated is higher than that in the case of the roll-on cap 26, the process is performed until the common spindle 31 further moves forward and passes the end point A2 of the PS capping section B.

In the capping machine of this embodiment, as described above, the start point A1 and the end point A2 of the RO capping section A and the start point B1 and the end point B of the PS capping section B are set.
Since the common cam groove 30 is formed so as to connect the two,
Whether the roll-on cap 26 or the pre-screw cap 28 is mounted, the common spindle 31
Can be used. Therefore, according to this capping machine, the spindle replacement work becomes unnecessary even if the cap to be handled is changed. Further, since the cam groove can be shared, it is not necessary to separately provide the groove, which facilitates machining and reduces the cost. . In the above embodiment, the common cam groove 30 is formed so as to descend and rise in two steps, but the shape is not limited to this. This common cam groove 30 is P
Start point B1 and end point B2 and RO of S capping section B
As long as it passes through the starting point A1 and the ending point A2 of the capping section A, various shapes can be formed.

[0020]

As described above, in the capping machine of the present invention, the rotation amount required for mounting the roll-on cap The start and end points of the capping section required for rotating the headset, and the capping of the roll-on cap. Roll-on because the control line is formed so as to pass through the start point and the end point of the capping section required to rotate the headset, which is the amount of rotation required when mounting the pre-screw cap, which is arranged so as to sandwich the section A common spindle can be used both when mounting the cap and when mounting the pre-screw cap. Therefore, according to this capping machine, the spindle replacement work becomes unnecessary even if the cap to be handled is changed. Moreover, since the control line can be shared, the number of control lines provided in the apparatus main body can be reduced, and in this respect, the manufacturing cost of the apparatus can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing a capping machine according to an embodiment.

FIG. 2 is a plan view showing the common cam groove provided in the capping machine of the embodiment in an expanded manner.

FIG. 3 is a cross-sectional view showing a conventional capping machine.

FIG. 4 is a front view showing a pre-screw cap cam groove and a roll-on cap cam groove provided in a conventional capping machine in a developed manner.

FIG. 5 is a front view showing movements of a roll-on cap spindle and a headset in a conventional capping machine.

FIG. 6 is a front view showing movements of a spindle for a pre-screw cap and a headset in a conventional capping machine.

[Explanation of symbols]

1 ... Spindle, 2 ... Upper cam, 3 ... Middle cam, 4 ... Lower cam, 5 ... RO (for roll-on cap) spindle 5, 6 ... PS (for pre-screw cap) spindle, 7 ... Main cam floor, 8 ... RO cam groove, 9 ... Main cam floor, 10 ... PS cam groove, 13 ... RO headset, 14 ... PS headset, 15 ... Roller,
17 ... Ring gear, 18 ... Tower, 20, 21 ... Driven gear, 23, 24 ... Rotating shaft member, 25 ... Pressure block, 26 ... Roll-on cap, A ... RO capping section, A1 ... … Start point, A2 …… End point, B ……
PS capping section, B1 ... starting point, 28 ... pre-screw cap, B2 ... endpoint, 30 ... shared cam groove (control line), 31 ... shared spindle, 32 ... landing, 33,34 ... downward tilt Part, 35, 36 ... upper inclined part, 40 ... cam floor, 41 ... roller unit, 3
8 …… Landing club.

Claims (1)

[Claims] 1. A roll-on cap, wherein a headset for attaching a cap to a container opening is attached to a lower portion of a spindle, and the spindle is configured to be vertically moved while horizontally moving along a control line. The amount of rotation required to mount the headset, the spindle is lowered so that the headset passes through the height position where the headset can be thread-rolled at the starting point of the capping section required to rotate the headset, and the capping section In a capping machine in which the control line is formed so as to raise the spindle so that the headset passes through a height position where the thread cannot be rolled at the end point, the capping of the roll-on cap is further performed on the control line. Necessary when installing the pre-screw cap so that it sandwiches the section. The start point and end point of the capping section required to rotate the transfer amount headset are set, and the height position where the headset can start screwing with the container mouth of the pre-screw cap is set at the start point of the capping section of this pre-screw cap. A capping machine characterized by lowering the spindle so as to pass through, and raising the spindle so as to pass through a height position where the headset separates from the pre-screw cap at the end of the capping section of the pre-screw cap.