JPS5873588A - Filling element for back pressure type filler having single chamber and multiple chamber structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filling element for backpressure photopress machines of single-chamber and multi-chamber construction as defined in the preamble of claim 1.

In the case of a filling element of the type known from DE 1 607 996 A1, the electrical switching device for generating a closing control signal for the actuating device of the liquid valve is in the form of a projection. It is attached to the pressurized gas and return gas pipes extending through the container to be filled. This tube is
It is mountable and retained within a socket provided in the filling element casing below the liquid valve. In the case of this filling element, the electrical connection conductor extending to the switching device is passed through the wall of the filling element casing to the socket and through this socket onto the switching device above the pipe for pressurized gas and return gas. It is very difficult to guide you. In addition to the difficulty in guiding the conductors and the expensive insulation thereof, there are problems with this known filling element with respect to the electrical insulation of the socket and the switching device with respect to the liquid channel in the filling element casing. For this reason, this known filling element requires great care when disassembling and reassembling the filling element casing, socket and pipe for pressurized gas and return gas with switching device. . The device will only function if it is carefully disassembled and assembled.

It is an object of the present invention to eliminate insulation problems that adversely affect the functionality of the socketed switching device for the liquid channel in the filling element casing during assembly or disassembly, and to ensure that the receptacle of the switching device has an impeccable electrical connection. It is possible to provide a filling element with a switching device of the type mentioned at the outset, which guarantees a reliable connection guidance. The goal is to improve one thing.

This object is achieved according to the invention by the features described in the characterizing part of claim 1.

This feature of the invention provides that, in addition to the advantage that the construction of the filling element is technically very simple, the sockets and electrical connection guides necessary for the switching device are arranged so that the liquid in the filling element casing is A simple, low-cost rod-shaped probe made of electrically conductive material, completely insulated from the channel and over its entire length, can be used for switching devices that can be mounted and fixed in a socket. This has the advantage that the probe can be quickly and easily exchanged when changing the type of bottle and adjusting the filling height again.

Other characteristics of the invention can be gleaned from the claims and the description of the exemplary embodiments. Hereinafter, embodiments will be described in detail based on the drawings.

The example shown in the figure is a filling element 20 for a back pressure type bottle filling machine with a single chamber structure. Such a filling element of a rotating filling machine (not shown) has a container (bottle) centering member 21 that can be raised and lowered and is mounted in an annular liquid chamber 22 . This liquid chamber is provided with an annular passage 23 for pressurized (compressed) gas and return gas on its lower side. This annular passage is connected by a connecting pipe 24 to the upper part of the liquid chamber 22, which is filled with pressurized gas at positive pressure. The filling element 20 has a filling element body 25, which has a filling element casing 26 and a lower part 27 made of electrically insulating synthetic resin. Inside the filling element casing 26 a vertical liquid valve 28 is provided which is acted upon by an opening spring 29 .

An electromagnetic actuating device 31 acts via a tappet 30 on the valve body of the liquid valve 28, which is supported on the valve seat.

When this operating device is switched into action, it forces the valve body against the valve seat against the opening spring 29, thereby closing the liquid valve 28.

A pressurized gas valve arrangement 35 is mounted on the side of the filling element housing 26 . The casing 36 of this structure
Therein, a valve plate 37 in the form of a control disk with a connecting channel (not shown) is rotatably provided by a carrier 38 . At its free end, which projects from the housing 36, this carrier 38 is equipped with an operating lever 39. During rotation of the filling machine, this actuating lever cooperates with control elements 61, for example cams or control cams, mounted on the base of the filling machine at intervals and in different planes, thereby causing the valve plate 37 to be adjusted at the respective time. Swivel to desired operating position. A spring presses the valve plate 37 airtightly against the substrate 4o. On the side of the base plate 400 facing toward the valve plate 37, an annular passage 23 is provided.
from the lower part of the annular liquid chamber 22 and the filling element casing 26
A passageway 41 for pressurized gas and return gas passing through is open. Furthermore, a balance channel 42 , a channel 43 for pressurized gas and return gas, and a discharge channel 44 open on the side of the base plate 40 facing toward the valve plate 37 . This balancing passage opens below the liquid valve 28 into a liquid channel 47 in the lower part 27, and the discharge valve 44 is guided outwardly in the base plate 40. .

Furthermore, a switching (opening/closing) device 45 is provided to control the liquid valve 28. The switching device reaches from the underside of the lower part 27 at a socket 46 formed in the lower part 27 and is fixed in this socket. This socket 46, as shown in detail in Figs.
A cylindrical blind hole 49 is formed in the thickened portion 33 of the projection 48 of the lower part 27 which projects into the liquid channel 47 and extends towards the longitudinal axis of the filling element. A pressurized gas and return gas passage 43 is connected to the blind hole of the kernel through a web 50 carrying the thickened portion 33 of the projection 48 .

Furthermore, a sealing plate 32 for the container centering member 21 is mounted on the lower surface of the lower part 27.

A turning wheel 51 coaxial with the blind hole 49 is formed at the end of the thick wall portion 33 that projects from the seal plate 32 . This turning wheel forms the end of the liquid guide groove 47 on the container side,
and directs the filling liquid flowing downwardly from the filling element 20 through the liquid channel 47 away from the switching device 45 and into the bottle to be filled, preferably against the inner wall of the bottle.
change direction.

The switching device 45 is made of electrically conductive material over its entire length and is provided with a central hole 52 for conducting pressurized gas and return gas. This central hole extends from the container-side end of the switching device 45 to the bottom of the small diameter section 53 opposite the opening of the pressurized gas and return gas passage 43 in the blind hole 49 .

The electrical connection of the switching device 45, which is preferably formed as a rod-shaped probe, in the socket 46 is made via the contact pin 5.
It is done by 4. The contact pin is mounted horizontally in the electrically insulating lower part 27 below the pressurized gas valve structure 35 and passes through the web 50 into the socket 46.
being guided inside. This contact pin is movable in the axial direction, and its inner end surface is pressed against the bottom of the annular groove 56 by a spring 55. This annular groove is formed at the upper end of the switching device 45.

In this case, the end of the contact pin engages the shoulder 57 of the annular groove 56, thereby holding the switching device 45 fixedly in its inserted position within the socket 46. In order to withdraw the contact pin 54 away from the switching device 45 and out of the area of the annular groove 56 or shoulder 57, a rotating lever 58 with a pivot lever 59 is mounted on the end of the outwardly projecting contact pin 54. There is.

This rotary shaft rotates on a counter-rotating wedge mounted on the lower part 27. A seal ring 34 provided in the annular recess of the switching device 45 above the small diameter section 53 separates the contact pin 54 and the small diameter section 53 .

In the case of the filling element 2o of the above construction, the entire filling element body 25 formed by the filling element casing 26 and the lower part 27 can be made of an electrically insulating material, and the filling element casing 26 can be rusted as usual. When the lower part 27 is made of an electrically insulating material such as polyphenylene oxide, polyamide, polytetrafluoroethylene, etc., the lower part of the bracket is the end of the liquid channel 47 on the container side. A switching device 45 based on at least a contact pin 54
and is removably and in close connection with the filling element casing 26. In the case of this filling element, the switching device 45 and the electromagnetic actuating device 31 of the liquid valve 128 are connected to each other by a circuit, with an electric control device 60 arranged between them. This circuit created by liquid contact consists of a switching device 45 and a contact pin 54 connected to it.
Starting from , the conductor is formed by the liquid chamber 22 and the casing 26 of the filling element 25 .

This conducting wire is connected to the contact pin 54 and reaches the electromagnetic operating device 31 via a control device 60 and a power source a arranged in the middle. A control device 6o connected to the power supply a for powering the circuit comprises electrical opening and closing means for controlling the operating device 31 for the liquid valve 28 and, as shown, the upper surface of the annular liquid chamber 22. Alternatively, it can be installed within the inner space (see Figure 1).

As shown in FIG. 3, the electrical connection between contact pin 54 and switching device 45 can be released by pivoting pivot lever 59. As shown in FIG. This causes the rotation of the counter-rotating wedge 58 so that the contact pin 54 is withdrawn out of the area of the shoulder 57 of the annular groove 56 against the action of the spring 55. Thereby, the switching device 45 can be withdrawn downwardly from the socket 46 in the lower part 27 of the filling element casing 26. On the other hand, the switching device 45
6 into the socket 46 in the lower part 27 of the filling element casing 26, only when the contact pin 54 is brought into its operating position under the shoulder 57 by the action of the spring 55 and switched. Equipment 45
It can be contacted with.

The important phases of the filling process will now be described to further explain the invention. Before starting the filling process, the filling element 20 is in the starting position shown in FIG. In this case, the electromagnetic operating device switched into action? 1 closes the liquid valve 28 against the opening spring 29. Furthermore, passage 4
1, 42, 43, 44 connections are on the valve plate 37 in the neutral device
is cut off by.

After pressing the bottle against the normal pressure, placing the container centering member 21 against the sealing plate 32 of the rotating filling element 20, and placing the switching device 45 into the bottle, the operating lever 39 is turned on the machine stand. Valve plate 37 by sliding on control element 61
and prestress the bottle from the annular passage 23 via the passage 41.43 and the central hole 52 of the switching device 45, which are connected to each other by the connecting passage of the pivoting valve plate 37. When the pressure between the pin to be subsequently crimped and the liquid chamber 22 is equalized and, just before this, the electromagnetic actuating device 31 is switched off, the opening spring 29 moves the liquid valve 28 upward, so that the liquid is released. The liquid flows into the bottle through the liquid guide groove 47. If the valve plate 37 is held in the pivoted position, the returned gas returns from the bottle to the annular channel 23 and the liquid chamber 22 through the channel 41 , 43 in communication with the central hole 52 .

When the liquid reaches the lower end of the switching mechanism 45, which corresponds to the filling height of the bottle, the liquid contacts form the circuit described above. This switches the electromagnetic actuating device 31 into action and returns the liquid valve 28 to the closed position against the opening spring 29. Subsequently, after each pivoting of the valve plate 37, pressure equalization and subsequent pressure relief take place. In this case, a connecting passage in the valve plate connects the passage 43 to the balancing passage 42 for pressure equalization and connects the passage 42 to the discharge passage 44 for pressure relief. After this filling process, valve plate 3
7 back to the neutral starting position and filler element 20
During rotation, the filled bottles are withdrawn from the filling element 20 and transported out of the filling machine as usual.

[Brief explanation of drawings]

FIG. 1 is an axial sectional view of a filling element according to the invention having a single-chamber design; FIG. 2 shows a lower casing of the filling element with a fixed probe connected by electrical connections and contacts; 3, a view similar to FIG. 2 of the lower part of the casing of the filling element, FIG. 2 is a partial cross-sectional view of the lower part of the casing along line A--H of FIG. 2; FIG. Reference numeral 20 in the figure...Filling element 22...Liquid chamber 23...Annular passage 24/Fist/Connecting pipe 25...Filling element main body 26...Filling element casing 27...Lower portion 28...・Liquid valve 2911・・Opening spring 3011・1 Tappet 31・・Electromagnetic operation device 32・・Seal plate 33・・Thick wall part □ 34・・・Fist seal ring 35・・・Pressure Gas valve structure 36...fist casing 37...valve plate 38...carrier 39 fist/e operation lever 40...substrate 41...passage for pressurized gas and return gas 4211...
Balance passage 43... Pressurized gas and return gas passage 44... Discharge passage 45, Φ/switching device 46... Socket 47... Liquid guide groove 48... Protrusion 49... Blind hole 50 ... Web 51 ... Turning wheel 52 ... Center hole 53 ... Small diameter portion 54 --- Contact pin 55 ... Spring 56 ... Annular groove 57 ... Shoulder 58 ... Rotation Wedge 59...Swivel lever 60...Electric control device 61...Engraving of control element drawings (no changes in content) Figure 1 JP-A-58-73588 (6) 5 Figure 3 Figure 4 Showa Care Kazuo Wakasugi, Director-General of the License Agency, dated December 2, 2017.Relationship with the person filing the Patent Application No. 12. Name of applicant: 4, Agent.

Claims (1)

[Claims] 1. A controlled pressurized gas valve structure for generating a pre-pressure of gas in a crimped container to be filled before filling the container with liquid, and operating within the filling element casing. an electrical connection comprising a liquid valve to be closed by the device and an electrical switching device for contacting the rising liquid in the container to generate a closure control signal to bring the valve operating device to a closed position; Said electrical switching device is fixed in a socket in the filling element body below the liquid valve and is electrically insulated from the liquid conduit with the guiding conduit, said liquid conduit being connected to the liquid conduit. In a filling element for a back-pressure filling machine of single-chamber or multi-chamber construction, in which the groove prevents the switching device from coming into contact with the liquid, the filling element body (25) is located at the end of the liquid guide groove (47) on the container side. Fewer co-switching devices (
45) is formed of an electrically insulating material up to the electrical connection part (54), in which a socket (46) for the switching device (45) is formed;
5) consists of a rod-shaped probe whose entire length is made of a conductive material, and the probe can be fixed to the socket (46) and is connected to the electrical connection part through contact. Filling element. 2. A filling element body (25) which extends from the container side end of the liquid guide groove (47) to at least the top of the electrical connection part (54) of the common switching device (45) and is made of an electrically insulating material.
) is formed as a lower part (27), which lower part consists of a filling element casing (27) made of rust-free steel.
A patented element characterized in that it forms a filling element main body (25) together with 6). 3. A filling element according to claim 2, characterized in that the lower part (27) of the filling element body (25) is removably connected to the filling element casing (26). 4. Filling element body (25) or lower part (27)
Filling element according to any one of the preceding claims, characterized in that a sealing plate (32) for the container 6 ejection member (21) is firmly attached to the end on the container side of the container. 5. The switching device (45) can be fixed in the socket by means of a contact pin (54) which is movable axially in the socket (46) and the lower part (27), which contact pin is electrically is pressed against the switching device (45) in contact to form an electrical connection and at the same time engages the shoulder of the annular groove (56) of the switching device (45) for fixation by means of an end with an end surface. 5. Filling element according to claim 1, characterized in that the filling element is free from the annular groove (56) and is separable from the area of the annular groove (56). 6. Filling element according to claim 5, characterized in that the switching device (45) has a sealing feature below the contact connection with the contact pin (54) in the socket (46). 7. The contact pin (54) moves axially along a horizontal plane below the pressurized gas valve structure (35) in the socket (46) and the lower part (27) of the filling element body (25). 6. Filling element according to claim 5, characterized in that it is capable of