DE2331909A1 - VALVE BLOCK FROM SEVERAL PILOT VALVES - Google Patents

Description

PATENT LAWYERS R. SPtANEMANN dipl-ohem. or. B. RElTZNER - dipl-in ·. J. RJCHTER MÖNCHEN HAMBUR «

«Ooo MUNICH * June 22, 1973

TaIIS

Telephone Γ0811) 226207/226209 Telegrams: InvenNui Munich

EMHART (U.K.) LIMITED Wheatley, Donoaster, Yorkshire, England

IW. AM., 1918 - I - 8343

Your sign:

Patent registration

Valve block made up of several pilot operated valves

The invention relates to a valve block for a glass molding machine with a plurality of valves which are arranged so that each controls the access of compressed air to a working device which carries out a step in the shaping of the glass objects, and with a corresponding number of electromagnetic devices, each of which has a valve assigned.

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MSmSw, account no. 20/1400 "■ P <xtadMcfcι MOnchan MO" 107

Conventional machines for shaping a glass mass into glass objects (especially IS glassware), which are described below referred to as glass forming machines, contain one or more machine sections in which one, two or three Servings of molten glass by processing devices

shaped into bottles or other glass objects-

will. These machine sections are operated pneumatically. Each part of the processing apparatus which takes its own step in the molding of the articles is controlled by a pneumatic valve and nineteen or twenty-one separate valves are normally required to control the complete sequence of the molding operations. It is known to control each valve by its own pawl-and-lever mechanism, each mechanism in turn being controlled by an associated rotating and adjustable squat. All of the cams or stops are normally mounted together on a timing drum in a space approximately 3/4 inches wide, this space being the widest part of the machine section.

When developing an electronic control for a glass forming machine (Hartford IS Glassware Forming Machine), in which the actuation of the pneumatic valves instead of cams and pawl-lever mechanisms with the help of solenoid valves takes place, the object on which the invention is based resulted, all twenty-one pneumatic valves and to accommodate their associated electromagnets in the relatively narrow space normally used by the latch-and-lever mechanisms take in. The accommodation should also be done in such a way that the existing mechanical valve actuation mechanism can be removed and replaced quickly and easily thanks to the solenoid valves.

This task is, based on a valve block, of the introductory specified type according to the invention thereby solved,

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that the valves and electromagnetic ones that belong together Devices are designed as pneumatic valve combinations, each consisting of a pilot operated Valve with a longitudinally movable closure part, an inlet opening, an outlet opening and a vent opening and from one electromagnetically operated pilot valve for supply of pilot air to the valve that the pneumatic valve combinations are arranged in two rows in the valve block and that a control valve before all valve combinations jointly assigned pre-pressure line and an air chamber is provided, the latter on all valve combinations and either with the vents or with the inlet ports of all valves connected is.

If the valves are in two rows in a single valve block are arranged, the at least one with fillen inlet or Air vents of the pneumatic Veitile communicating common air chamber contains, the resulting valve block is very compact, so that it can be easily installed in the available space in a glass molding machine can.

The valves to be installed in the electronically controlled glass molding machine according to the invention are pneumatic Valve combinations. Each valve combination contains a pilot operated valve in the manner of a poppet or slide valve with ring-shaped valve seats, which is actuated by compressed air, which can be actuated electromagnetically Pilot valve reaches the slide valve. Accordingly, the invention provides a valve block for a glass molding machine proposed that several valve combinations arranged in two rows contains, each valve combination of a pilot operated valve with an inlet, an outlet and one vent and one electromagnetically

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There is an actuatable pilot valve for supplying the pilot air to the pilot valve ". Furthermore, according to the invention a pre-pressure line and an air chamber, which are assigned to all pilot valves, are provided, the latter is placed adjacent to all valve combinations and with either all vents or all inlet openings the pilot operated valves is connected.

The valve block preferably comprises two further air chambers, which are connected to the vent or the inlet openings in each case only the pilot operated slide valves, the each belong to a number of valve combinations.

In one embodiment of the invention, that is to all valve combinations adjoining air chamber has a common exhaust chamber between the two rows of valve combinations lies. According to this embodiment of the invention, a valve block is therefore provided that several in two Contains pneumatic valve combinations arranged in series; each valve combination consisting of a pilot operated slide valve with an inlet, an outlet and a vent opening and from an electromagnetically actuated pilot valve to supply the pilot air to the pilot operated valve. Furthermore, here is an all Pre-control valves jointly assigned pre-pressure line and a ventilation chamber are provided, the latter between the two rows of valve combinations and are connected together with the vents of all slide valves is. Not only does this valve block easily fit into the space available on the glass forming machine, but this arrangement does the valve combinations and the vent chamber also has the advantage that the operation of the valve block is surprising becomes calm.

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This embodiment of the valve block can be even more compact if you provide a distributor piece, which with is connected to the outlet openings of the slide valves and lies between the two rows of valve combinations.

In particular, the invention therefore results in a valve block, consisting of a plurality of pneumatic valve combinations, which lie transversely to the longitudinal direction of the valve block and which run in two lines in the longitudinal direction of the valve block are arranged and have a distance from one another in the vertical direction, each valve combination comprising a slide valve with an inlet, an outlet and a vent opening and from an electromagnetically actuated pilot valve for supplying pilot air to the slide valve consists of a pre-pressure line in the valve block, common to the pilot valves of all combinations listened out. a ventilation chamber, which is located between the two rows of valve combinations and on which the Vents of all slide valves are connected, and from an outlet manifold that connects to the vent chamber is arranged adjacent between the two rows of valve combinations and with the outlet openings all slide valves is in communication.

The valve block can also contain two feed chambers, each adjacent to one of the two rows of valve combinations are mounted and separated by the relevant row opposite the ventilation chamber, the feed chambers in each case are only in communication with the inlet openings of the valves of the row in question.

In this embodiment of the invention, it is useful if the valve combinations in the two rows in the longitudinal direction are offset from each other so that the top combinations each vertically over a gap between the lower combinations.

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According to an alternative embodiment of the invention is the air chamber, which is assigned to all valve combinations in common, a compressed air chamber, which is connected to all the inlet openings of the slide valves communicates. In a particularly expedient arrangement for such a valve block, the two are relative to one another parallel rows of valve combinations arranged in a section or a disc of the valve block, which is parallel to a front side of the block, the valve combination. in each row from the longitudinal centerline of the block section protrude to opposite sides and the common feed chamber in a further, on one side of the valve combinations adjacent portion of the block is housed.

A preferred arrangement in this embodiment of the invention includes two further vent chambers from each of which is connected to the vents of the slide valves of the relevant series of valve combinations and both of which are located in the same section of the valve block as the feed chamber, Up to twenty-four Valve combinations can be inserted into a valve block of this construction in two rows of twelve each with the valve combinations in each row one above the other instead of being offset from one another.

This embodiment of the valve block can also be provided with an outlet manifold on which the outlet openings all slide valves are connected and which is arranged on the side of the block adjacent to the valve combination, facing away from the vent chambers.

Appropriately contained in each valve block according to the invention the pilot valves each have an individual control device, which can be operated directly by hand or also electromagnetically is actuatable.

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For a better understanding of the invention, an exemplary embodiment is explained in more detail below with reference to the drawing. In detail shows:

Pig, 1 is a front view of a valve block according to the invention,

Pig. FIG. 2 is a side view of the valve block shown in FIG on a larger scale and

Pig. 3 shows a cross section of a cable of this valve block after the section line A-A in Pig. 1.

The drawing shows a valve block, which consists of two cast parts 1 and 2 and the twenty-one pneumatic valve combinations contains. The valve combinations extend laterally to and across the valve block, as best can be seen from Figures 2 and 3, and bilien two rows running along the valve block. The top row contains eleven and the lower row ten valve combinations, the two rows being offset from one another so that the Valve combinations lie vertically on top of one another with a gap. The castings 1 and 2 form a vent chamber 43, the located between the two rows of valve combinations and provided with a vent 44 to the atmosphere is.

All valve combinations are identically the same, and one of them is shown in detail in FIG. This cut open The valve combination consists of a pilot-operated slide valve located in the casting 2 and denoted as a whole by 3 in the manner of a poppet valve and from one located in the casting 1 and designated as a whole with 4 electromagnetically actuatable pilot valve. The slide valve 3 is located in a bore 5 of the casting 2. This bore is with provided three annular bulges, which with the slide to be explained entry spaces 6, 7 and 8 form .. The Annular space 8 is connected to an inlet opening 9 in the casting 2.

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The annular space 6 is connected to a ventilation opening 11 in the casting 2 connected, which opens into the vent chamber 43, these all vents of the twenty-one Slide valves in the valve block is jointly assigned. The annulus 7 is provided with one of twenty-one outlet openings 10 connected, which are arranged in a row in an outlet manifold 25, which is the middle section of the casting 2 forms and between the two rows of the valve combinations adjoining the vent chamber 43 lies. It should be noted that the arrangement of the outlet openings in a single row enables these outlet openings directly with the existing control lines of the pneumatic cylinders of a conventional one Connect glass forming machine.

A piston valve 12 is mounted in bearing rings 13 and 14 within the bore 5 so as to be longitudinally displaceable and in two places 16 and 17 thickened. There are also two annular valve seats 18 and 18a arranged within the bore 5 and fastened with the aid of support rings 19, 20, 21 and 22. A spring 23 is clamped between the widened end 24 of the piston valve and the support ring 19 and presses, as shown in FIG. 3 can be seen, the piston slide to the left of the bore 5 i ^ - a position in which the thickening 16 on the Valve seat 18a rests.

The pilot valve 4 can be actuated electromagnetically and causes the pilot air to be supplied from a pre-pressure line 36 in the casting 1 of the valve block to the slide valve 3 »whereby this can be operated. The pre-pressure line 36 is assigned to all pilot valves of the twenty-one valve combinations, which works best Fig. 1 can be seen where this line in dashed lines Lines is indicated. The pre-pressure line 36 is from an inlet 42 located on one side of the valve block supplied with compressed air and has two stub lines 36a and 36b.

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Each of the "two series of valve combinations" is one assigned to these stub lines, and both are connected to one another by a transverse bore 56c.

As can be seen in particular from FIG. 3, the pilot control valve contains 4- a magnetic core 27 which is screwed into an opening 26 of the casting 1 and the turns of a Excitation winding 28 carries. This magnetic core 27 has an axial bore 29 which is larger in an axial space 30 Diameter at the inner end of the magnetic core 27 opens. The axial space 30 contains a cylindrical armature 31 a magnetizable material. In one end of the Anchor 31, a rubber stopper 32 is inserted, which is attached to the inner mouth of the bore 29 of the magnetic core strikes and seals it. The other end of the anchor carries one Disk 33 »the one in Pig. 3 in contact with a mouthpiece 34-out Rubber is shown. The mouthpiece sits in an inlet 35 'which is connected to the inlet pressure line 36. One The spring 37 is between the disk 33 and the magnetic core 27 clamped and pushes the armature 31 against the mouthpiece 3 ^, whereby the inlet 35 is closed. A hole 40 connects the opening 26 with the bore 5 in the cast part 2.

The pilot valves are operated by having their excitation windings from an electronic (not shown) Time control unit according to a program electronic control signals are sent. In the position shown in FIG of the pneumatic valve combination, the excitation winding is not excited, and the armature 31 is moved by the spring 37 pressed to the right, the disc 33 resting on the mouthpiece 34 and the outlet 35 of the inlet pressure line 36 shuts off. If pre-compressed air still escapes through the mouthpiece, they can into the axial space 30 of the magnetic core 27 and through the Axial bore 29 to reach the free atmosphere. The piston valve 12 is, as can also be seen from FIG. 3, in its left position, so that the thickening 16 sealingly

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rests on the valve seat 18a and thereby prevents compressed air flows from the inlet port 9 through the slide valve.

When the electromagnet is energized, the armature 31 becomes the axial space 30 is drawn in against the spring 37, so that the rubber plug 32 is the inner mouth of the bore covers and the disc 33 of the anchor at the same time exposes the mouthpiece 34- of the inlet 35. At this moment pre-pressure air Ton flows through the pre-pressure line 36 the bore 40 of the casting 1 into the bore 5 of the casting 2, which contains the slide valve 3. Due to the pressure of the Pre-compressed air becomes, as from Pig. 3 is understandable, the piston slide 12 moves against the spring 23 to the right, until the thickening 17 rests on the valve seat 18. Now compressed air can from the inlet opening 9 into the annular space 8 and through the valve seat 18a flow into the annular space 7 and flow out through the outlet opening 10 of the distributor piece 25. This outlet opening is connected to an actuating cylinder of a certain part of the processing device of the glass mold "' Machine connected, so that this rope is operated as long as the excitation winding 28 is under tension.

When the excitation winding 28 is switched off, the spring 37 moves the armature 31 to the right until the disc 33 »like can be seen from Fig. 3, again on the mouthpiece 34- to the plant comes and thereby blocks the further inflow of pilot air through the inlet 35 to the bore 5 iiin. The pressure in the Bore 40 is lowered in that at the same time the rubber stopper 32 releases the opening of the axial bore 29, and thereupon the spring 23 moves the piston valve 12 to the left into the position shown in FIG. 3, so that compressed air no longer from the inlet opening 9 to the outlet opening can flow · In addition, the compressed air in the line which connects the outlet opening 10 to the working cylinder of the relevant part of the processing device of the glass molding machine connects through the annular space 7 of the bore 5i

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the valve seat 18, the annular space 6 and the vent opening 11 escape into the ventilation chamber 43.

Each pilot valve contains one independent of the electronic one Control by hand individually operated control device. As can be seen from FIG. 3, piping consists of a roller-shaped, rotatable and sealed in the casting 1 inserted plug 47, which at one end one of a Operator graspable handle 48 and at the .anderen end one having coaxial cylindrical shaft 49 of smaller diameter. This shaft 49 has a semi-cylindrical extension 50, the flat surface of which is located directly next to the disk 33 of the armature 31 is · One rotation of the plug 47 about its 3 and perpendicular to the direction of movement of the armature 31 brings the axis Extension 50 of shaft 49 in contact with disk 33 and thus moves the armature 31 to the left. This covers how When the magnet is excited, the rubber stopper 32 removes the bore 29, the inlet 35 becomes free, and pilot air can pass through flow through bore 40 and actuate piston valve 12.

In the case of the valve block according to the invention, individual control devices which can preferably be operated directly by hand are used, you should also consider installing pneumatic individual control devices in the valve block. One such a device could, for example, comprise a three-way tactile valve which would have to be connected in such a way that one connector with the bore 29 of the magnet core 27 »the second with the free atmosphere and the third connection with the pre-pressure line 36 is connected. In its normal operating position this individual control touch valve would establish a connection between the bore 29 and the atmosphere. In its working position, the touch valve would have pilot air with pre-pressure pass through the bore 29 into the axial space 30 and through the bore 40 to the valve 3 and actuate it.

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In the valve block shown in the drawing, the inlet ports are 9 of the valve 3 is individually connected to a compressed air source. However, if appropriate, you can two feed chambers 55 »56 are provided on the valve block be, as indicated in Fig. 2 with dashed lines. Each of these feed chambers extends directly along a series of valve combinations and is from the venting chamber 4-3 through the same series of associated valves Separate valve combinations.

The above-described arrangement of the valve combinations, the venting chamber, the pre-pressure line and the distributor piece containing the outlet openings in the valve block is particularly compact in all three spatial dimensions. It therefore allows the valve block to be placed in the position normally occupied by the pawl-and-lever mechanisms used in conventional glass molding machines, without the need for major reconstruction of the glass molding machine. Accordingly, when replacing the conventional mechanical timing system of an existing glass molding machine with an electronic timing system, the valve block can be used as the "replacement unit ^11. In addition, in view of the fact that the two castings 1 and 2 containing the valve combinations, one in comparison to the The total volume of the valve block forms a relatively large ventilation chamber, the advantage that the exhaust noises generated in the valve block when the twenty-one slide valves are operated are very small.

Expectations

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Claims (10)

Expectations Valve block for a glass molding machine with several valves, which are arranged so that each of the compressed air access controls to a working device that carries out a step "in the shaping of the glass objects, and with a corresponding number of electromagnetic devices, one of which is associated with each valve, characterized in that the associated valves and electromagnetic devices are pneumatic Valve combinations are formed, each consisting of a pilot operated valve (3) with a longitudinally movable closure part (12) an inlet opening (9), an outlet opening (10) and a vent opening (11) and one of them electromagnetically Operable pilot valve (4) for supplying pilot air to the valve (3)> that the pneumatic valve combinations in the valve block (1, 2) are arranged in two rows and that a pre-pressure line (36) assigned to the pilot valves of all valve combinations and an air chamber (43) is provided, the latter adjoining all valve combinations and either with the ventilation openings (11) or with the inlet openings of all valves (3) is connected. 2. Valve block according to claim 1, characterized in that two further air chambers (55 * 56) are provided by each of which is connected to either the vents or the inlet openings (9) of those valves in common which are in one of the two rows of valve combinations 309882/1 156 3. Valve block according to claim 1 or 2, characterized in that that the two rows of valve combinations lie in a section of the block that is parallel to a front surface of the block extends, the valve combinations in the two rows are opposite to the longitudinal center line of this section Directions, and that the air chamber (43) in an adjacent parallel portion of the block and connected to all the inlet ports of the valves (3) is. 4. Valve block according to claim 1 or 2, characterized in that that the two rows of valve combinations are separated from one another by a vent chamber (43), in which open the ventilation openings (11) of all valves (3). 5. Valve block according to claim 4, characterized in that a distributor piece (25) is provided which is connected to the outlet openings of all valves (3) is connected and arranged between the two rows of valve combinations. 6. Valve block according to claim 4 · or 5 »characterized in that that the pneumatic valve combinations are arranged transversely to the valve block and that the two rows of pneumatic valve combinations extend in the longitudinal direction of the valve block and in the vertical direction have a distance from each other. 7. Valve block according to claim 6, characterized in that the valve combinations in the two rows in the longitudinal direction are offset from each other 309882/1156 8. Valve block according to one of claims 4 to 7 »thereby characterized in that two feed chambers (55 »56) are provided are each mounted adjacent to one of the two rows of valve combinations and through the row in question are separated from the ventilation chamber (43), the feed chambers (55 and 56) each with only the inlet openings (9) of the valves (3) of the row in question are in communication. 9. Valve block according to one of claims 5 to 8, characterized in that each pilot valve (4) one by hand contains actuatable control device (47 to 50). 10. Valve block according to one of claims 5 to 8, characterized in that each pilot valve (4) e.ine pneumatically contains actuatable control device. 309882/1156 Blank page