JP3504004B2 - Filling valve opening device of filling machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for opening a filling valve of a filling machine, and more particularly, to a filling operation of a filling section at the start of a washing operation or a hot filling operation of the filling machine. The present invention relates to a filling valve opening device suitable for a heating operation or the like. [0002] Conventionally, various methods have been known for cleaning a filling valve of a filling machine. A valve opening / closing device for opening a filling valve is installed in a lift cylinder that lifts and lowers each container during the filling operation, and during a cleaning operation, the filling valve is pushed up through the valve opening / closing device using the lift cylinder, and the valve is opened. There is a method in which a cleaning operation is performed by opening the door (Japanese Utility Model Publication No. 45-12626). In addition, the present applicant relates to a cleaning apparatus that performs cleaning by opening a filling valve by using a lifting mechanism of a container table accompanying the filling operation, and by narrowing a valve opening section during cleaning, a gutter or the like for collecting a cleaning liquid. A proposal has been made to reduce the size of the device and to ensure the flow rate of the cleaning liquid per valve (Japanese Patent Application Laid-Open No. 5-319485). [0003] Incidentally, in the former type of the conventional cleaning apparatus, since the valve opening section during cleaning is the same as that during the filling operation, the cleaning zone from which the cleaning liquid flows out. Becomes longer. Therefore, not only is the gutter for collecting the cleaning liquid undesirably large, but also the total number of valves that are opened at the same time increases, and there is a problem in securing the flow rate of the cleaning liquid per valve.
On the other hand, the latter cleaning device solves the above-mentioned problem by reducing the valve open section, but the switching structure for reducing the valve open section is still complicated, and the valve is opened and closed alternately. It was difficult to apply to the intermittent cleaning described below. The present invention has been made in view of the above points, and provides a filling valve opening device that can reduce a valve opening section at the time of cleaning with a simple configuration and can be applied to intermittent cleaning. It is intended for that purpose. [0004] In order to solve the above-mentioned problems, the present invention provides a filling machine for performing filling by raising and lowering a container table by a lift cam mechanism, separately from the lift cam mechanism for the filling operation. A valve for installing an auxiliary lift cam mechanism for further raising the container table from a rising end raised by the lift cam mechanism, and opening the filling valve to the container table via raising of each container table by the auxiliary lift cam mechanism. A push-up member is provided, and the auxiliary lift cam mechanism can be moved to a non-operating position where the container table is not raised during a filling operation, and to an operating position where the container table is raised during a filling valve cleaning operation or a temperature raising operation. It is characterized by being arranged in. According to the present invention, during a cleaning operation or a warming-up operation in hot filling, switching to the elevation by the auxiliary lift cam mechanism realizes a reduction in the ascending section, ie, the valve opening section, with a simple configuration. It is possible to do. Further, if the cam surface of the auxiliary lift cam is formed in a saw-tooth shape or the like, it is possible to easily cope with intermittent cleaning. An embodiment of the present invention will be described below. FIG. 1 is a longitudinal sectional view showing a main part of one embodiment of the present invention.
In the figure, reference numeral 1 denotes a known filling valve, which is disposed at a predetermined interval on the lower surface of a filling liquid tank 3 which rotates integrally with the rotating shaft portion 2. Immediately below each filling valve 1, a container table 7 on which a container 6 is placed is vertically movable via a bearing portion 5 installed on a corresponding portion of a rotating body 4 that rotates integrally with the rotating shaft portion 2. Is established. A cam follower 8 is supported at the lower end of the container base 7 via a support shaft 9, and constitutes a lift cam mechanism for a filling operation together with the lift cam 10. Then, as is well known, when the rotation of the rotating body 4 is started, the container base 7 rises along the cam surface shape of the lift cam 10,
The filling valve 1 is pushed up through the mouth of the container 6 itself, and the valve is opened in a predetermined section to perform the filling operation. In addition, as a valve structure of the filling valve 1, any known filling valve which can open the valve by pushing up a predetermined member linked to the valve portion can be applied, and the specific structure is free. Next, a case where the filling valve opening device of the present invention is applied for cleaning will be described. As shown in the enlarged view of the main part in FIG. 2, the support shaft 9 at the lower end of the container base 7 has a cam follower 1 in addition to the cam follower 8.
1 is supported, and constitutes an auxiliary lift cam mechanism for cleaning together with the auxiliary lift cam 12 below. The auxiliary lift cam 12 is configured to be able to move up and down by an air cylinder 13. During the filling operation, it is located at a non-operating position which is located below and separated from the cam follower 11, and is set at an operating position where it can be raised by the air cylinder 13 and come into contact with the cam follower 11 during the washing operation, and functions as a cam mechanism for washing. It is configured to be able to. As shown in FIG. 1, a valve push-up member 14 for transmitting the ascending operation of the container base 7 to the filling valve 1 and opening the valve is provided above the container base 7 in this embodiment. It is installed in a form that also serves as a neck grip that supports the neck of the container 6 during operation. In the vicinity of the orbit of the container table 7, a cleaning liquid collecting gutter 15 is provided so as to be able to advance and retreat to a space above the container table 7.
Are arranged. FIG. 3 is a schematic plan view showing the arrangement of the auxiliary lift cam 12, and FIG. 4 is a developed view thereof. As shown in the drawing, the auxiliary lift cam 12 reduces the rising section of the container table 7 by itself, that is, the valve opening section B, from the rising section of the container table 7 by the lift cam 10 for filling operation, that is, the valve opening section A. , The length is set short. The height of the upper cam surface of the auxiliary lift cam 12 is set higher than the upper cam surface of the lift cam 10, as shown in FIG. The specific height of the upper cam surface determines the ascending position of the container base 7 required to open the filling valve 1 from the positional relationship between the upper end position of the valve push-up member 14 and the filling valve 1. It is determined from the relationship with the ascending position. In the figure, 16, 17
Is a star wheel. However, during a normal filling operation,
By lowering the air cylinder 13, the auxiliary lift cam 12 is set to a non-operation position separated from the cam follower 11,
The container table 7 is moved up and down by a cam mechanism for the filling operation including the lift cam 10 and the cam follower 8, and a predetermined amount of filling work is performed in the valve opening section A according to the rotation of the rotating body 4. In this case, in this embodiment,
Since the valve push-up member 14 also serves as a neck grip, it functions as an original neck grip during this filling operation. Needless to say, the gutter 15 is retracted to a position that does not hinder the filling operation. Next, at the time of the cleaning operation, the cleaning liquid is first supplied to the filling liquid tank 3 in place of the filling liquid, the cleaning liquid collecting gutter 15 is advanced to the collecting position, and the air cylinder 13 is raised to raise the auxiliary lift cam 12. Is set to an operating position where the cam follower 11 can abut. In this state, when the rotating body 4 is rotated in the same manner as during the filling operation, the container table 7 first rises in the valve opening section A due to the guiding action of the lift cam 10 and the cam follower 8, but the amount of rise is insufficient. The valve push-up member 14 does not push up and open the filling valve 1. Thereafter, when the vehicle enters the valve opening section B, the cam follower 11 comes into contact with the auxiliary lift cam 12, and as a result, the container base 7 further rises and the valve lifting member 1
The filling valve 1 is pushed up by 4 to open the valve mechanism. As a result, the cleaning liquid in the filling liquid tank 3 flows down while cleaning the inside of the filling valve 1 and is collected by the gutter 15.
In this case, if the cam surface of the auxiliary lift cam 12 is formed in a saw-tooth shape, intermittent cleaning in which opening and closing of the filling valve 1 are alternately repeated can be easily realized. As described above, since the valve opening section B by the auxiliary lift cam 12 is set to be short, the related devices such as the gutter 15 can be downsized. The cleaning liquid collected in the gutter 15 is collected in a collection tank via a pipe (not shown). In the description of the above embodiment, the neck grip is also used as the valve push-up member. However, the valve push-up member may be formed separately or may be configured to be able to advance and retreat. Further, the case where the air cylinder is used as the lifting / lowering means of the auxiliary lift cam has been described as an example, but other driving means or a manual configuration is also possible. Further, it is also possible to adopt a configuration in which operation or non-operation is switched by moving the cam follower side, or switching is performed by shifting the auxiliary wrist cam or the cam follower in the lateral direction. In addition, the present filling valve opening device is suitable for not only the cleaning operation but also a temperature increasing operation of each filling portion at the start of the hot filling operation, that is, a warming-up operation. According to the present invention, the structure for reducing the valve open section in the cleaning operation or the like can be greatly simplified. Further, intermittent cleaning in which the valve is opened and closed alternately can be very easily handled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a main part of an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of the embodiment. FIG. 3 is a schematic plan view showing an arrangement of a cam mechanism in the embodiment. FIG. 4 is a development view of the cam mechanism in the embodiment. [Description of Signs] 1 ... Filling valve, 2 ... Rotating shaft, 3 ... Filling liquid tank, 4
... Rotating body, 5 ... Bearing part, 6 ... Container, 7 ... Container stand, 8 ... Cam follower, 9 ... Support shaft, 10 ... Lift cam, 11 ... Cam follower, 12 ... Auxiliary lift cam, 13 ... Air cylinder, 14 ... Valve push-up Member, 15 ... gutter, 16, 17 ...
Star wheel, A, B ... valve open section

Claims (1)

(57) [Claims 1] A container table supporting a container is provided corresponding to each filling valve provided in a filling liquid tank, and the container table is raised by a lift cam mechanism, and the container is By pushing up the filling valve through the container on the table, in a filling machine that opens the filling valve to perform filling, separately from the lift cam mechanism, the container table is lifted by the lift cam mechanism from the rising end. An auxiliary lift cam mechanism for further increasing the height is installed, and a valve lifting member for opening the filling valve via the elevation of each container base by the auxiliary lift cam mechanism is provided on the container base, and the auxiliary lift cam mechanism is Can be moved to a non-operating position where the container table is not raised during filling work, and to an operating position where the container table is raised during filling valve cleaning work or temperature raising work. Filling valve opening device of the filling machine, characterized in that it is arranged.