JPH0245041B2 - GARASUSEIHINSEIKEIKYONOBENKUMITATETAI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to valve assemblies, and more particularly to electronic valve block assemblies for controlling the operation of glassware forming machines.

Glassware forming machines typically include multiple individual departments that work together to receive gobs of molten glass from a single source of molten glass in a predetermined temporal order or sequence.
section), that is, it includes IS. Each individual station (IS) of the glassware forming machine itself includes a plurality of pneumatically actuated components (eg, pneumatic cylinders, etc.). The relative operating sequence of the respective components of each IS molding machine is controlled by selective actuation of associated valves, typically located within a valve block. Typically 19 to 21 separate valves are used to control the entire forming sequence of a glass product.

The operation of each valve in the block is typically as follows:
This is done by a mechanical timing drum that is driven synchronously with the gob feeding mechanism. Corresponding protruding cam members are disposed within the annular grooves on the drum surface and mechanically cooperate with the respective valves to bias and release the bias.
The relative timing between each operation within the cycle of the machine is adjusted by the relative position of each respective cam member within the annular groove. For a basic description of such a glassware forming machine, reference may be made to H. W. Ingle, U.S. Pat. No. 1,911,119, issued May 23, 1933.

Electronic sequencing of glassware forming machine components (eg, pneumatic cylinders, etc.) is now becoming available. For a description of electronically controlled glassware forming machines, see Quinn and Kwiatkowski, October 2, 1973.
Kwiatkowski) U.S. Pat. No. 3,762,907 and
See US Pat. No. 29,642 to Kwiatkowski and Wood (both commonly assigned), reissued May 23, 1978. Simply put,
In an electronically controlled glass product forming machine, an energizing signal is generated by an electronic controller to selectively energize or deenergize a solenoid operated valve or the like to control each component of the glass product forming machine. It performs time-making operations. These activation signals are generated synchronously with the machine cycles defined by the molten glass gob feeders.

The representative solenoid-controlled valve block was introduced in 1975.
U.S. Patent No. 3,918,489 to Fosteretal, issued November 11, and U.S. Patent No. 3,918,489 to Bublitz et al, issued September 28, 1976.
Described in No. 3982726. It is stated that in electronic valve blocks, the space to be occupied by each valve in the valve block must be reduced to a minimum in order to incorporate all 19 or more pneumatic valves into the valve block. It is being

Additionally, the need for compact valve block sizes is further exacerbated by the need for multiple air pressures to operate IS machines in various working modes. Conventional electronic valve blocks have required external plumbing means to provide the various air pressures required. Therefore, when a molding machine is required to develop its operation to produce different types of bottles, i.e. when its work changes, it is often necessary to reconfigure the piping system of the machine. Such job changes for IS molding machines can often occur within a week. As will be readily appreciated, redeployment of the piping system of a molding machine is extremely costly in terms of production interruptions.

The desire to keep each valve compact is hampered by the need for sufficient airflow to maintain the operating speed of IS-type components (eg, pneumatic cylinders, etc.). Also,
Similarly, making the size of each valve compact would thwart the desire to be able to operate each function of an IS molding machine with unobstructed air. In typical operation of an IS molding machine, various concentrates, cylinder oil, sludge, varnish, etc. from the compressor etc. tend to enter the air line. These foreign objects often occur obstructing the tight tolerance orifices in each valve. As will be readily appreciated, the installation of additional filtering equipment and the frequent cleaning and replacement of each filter result in considerable costs.

Similarly, it is often desirable to use vacuum (negative pressure) to operate various functions of a molding machine. For example, vacuum is often used to "help" provide a gob of molten glass in the finished part (threaded part or neck) of a molding during a molding process. Vacuum is generally applied via bulky, rigidly piped piping and manifolds located below or at the so-called "bed level" of the IS molding machine.

Generally, two sets of valves are used to control the delivery of vacuum. Under control of the controller, a solenoid operated pilot valve is selected over a pilot operated spring return power valve, which is typically located in the bed level piping on the underside of the molding machine. supply pilot air. Correspondingly, these power valves are “blind side” to the finishing area of the bottle.
Supply vacuum. Thus, the vacuum is only indirectly controlled by the solenoid valve.

Providing a dual control system and arrangement of vacuum lines and power valves at bed level creates significant problems in providing controlled vacuum operation to IS molding machines. The environment at the bed level of IS molding machines is particularly harsh and often causes power valve malfunction. Additionally, power valves at bed level are relatively inaccessible.

A more significant problem stems from the delay times and mismatched operation inherent in this duplex system because of the relatively large lengths of piping used. The arrangement of the vacuum lines and power valves at the bed level requires plumbing to be run from the bed level to the blank-side bottle finishing equipment. The piping to the finishing equipment must be evacuated before a vacuum is created in the finishing area. This will introduce a delay into the system that will vary depending on the amount of time required to evacuate the piping. The time required to evacuate piping itself varies due to power fluctuations, foreign objects in the lines, and other factors that are largely uncontrollable. In addition to these, additional delays are added in supplying pilot air from the solenoid valve to the power valve.

It should be understood that the precise timing of the application of vacuum to the finishing area of the bottle is critical to the effectiveness of this vacuum.

Furthermore, with conventional electronic valve blocks, a single malfunction can require removal of the entire valve block for repair, which requires the IS molding machine to be out of operation for an extended period of time. The additional problem arises that what should not be done often happens.

Additionally, conventional electronic valve blocks provide operating air at the outlet port, which must be fully mated with the manifold (kiss plate) to the glassware forming machine. However, the spatial configuration of the manifold inlet varies between different makes and models of glassware forming machines. Therefore, specific piping systems must be provided to connect the outlet ports of conventional electronic valve blocks to the manifolds of different types of IS molding machines.

The object of the invention is to provide a valve block of compact construction that allows the arrangement of valves for complete control of the operation of an IS molding machine. In other words, there is no need for external piping means to supply the various air pressures necessary for the operation of the molding machine, and it is possible to supply sufficient air flow for operation even though it is compact. It is an object of the present invention to provide a valve block that can be easily removed from a machine and that can be easily adapted to the production of different types of glass products.

A valve block according to the invention cooperates with at least one valve means to provide selective fluid communication between an inlet port and an outlet port of the valve means and between said outlet port and a discharge port; Valve means is removably secured to an outer surface of the valve block, the valve block having a body, first and second plenums disposed within the body, and communicating with the inlet port disposed within the body. a first fluid passage communicating with the outlet port disposed within the valve block; and an exhaust plenum communicating with the exhaust port formed within the valve block, the output passage communicating with the exhaust port formed within the valve block. a removable valve means connected to each component, the first plenum being connected to a source of fluid at low pressure and the second plenum being connected to a source of fluid at high pressure; a selector mechanism is disposed within the body for selectively connecting the first and second plenums to a first passageway for selectively supplying fluid at a low pressure and at a high pressure to the body; In particular, the selector mechanism includes at least one bore extending from an outer surface of the valve block and communicating with a first fluid passageway, and at least one bore communicating between the first plenum and the bore. a second fluid passage; at least one third fluid passage communicating between the second plenum and the inner bore; and at least one third fluid passage communicating between the first plenum and the first fluid passage; the inner hole for selectively providing fluid communication between the second plenum and the first fluid passageway and for blocking the first fluid passageway from both the first plenum and the second plenum; It consists of a cylinder, which is received within.

Therefore, in the valve block of the present invention, since the first plenum and the second plenum are respectively connected to a low pressure source and a high pressure source outside the valve block, these plenums are selectively connected to the first passage. By communicating with the molding machine, working air can be supplied to the components of the molding machine over a very wide range of pressures. In particular, if it is communicated with a high pressure source, it is possible to supply working air with a high pressure and a sufficient flow rate to the structural members of the machine. Furthermore, the valve means for selectively supplying working air from a low-pressure source or a high-pressure source to the components of the machine can be easily attached to and detached from the valve block body, so even in the event of a failure,
Repair work such as replacement can be quickly performed without disassembling the valve block itself. Particularly, according to the selector mechanism according to the present invention, switching between low pressure and high pressure and switching between them can be quickly and accurately selected through the rotation of the cylinder received in the inner hole.

In one embodiment of the invention, such an inexpensive adapter plate is also provided for selecting the function of a certain valve, i.e. whether the valve provides positive air pressure or vacuum upon actuation. There is.

Referring to FIG. 1, a representative embodiment of a valve block in accordance with the present invention is indicated generally by the numeral 10. Also shown in FIG. 1a is the hydraulic circuit for this embodiment. Valve block 10 includes a body block 12 having surfaces 12a, 12b, 12c and 12d, respectively. A plurality of conventional internal air pilot solenoid operated valves 14 are arranged in a row along the surface 12b of the block and communicate with respective ports in the valve block surface as described below. . Similarly, a plurality of additional conventional internal air pilot solenoid operated valves are arranged in a row along the upper surface 12c of the body block 12. When valve block 10 is used in an IS molding machine, there are typically 11 valves disposed on surface 12b and 10 valves disposed on surface 12c. valves 14 and 16
A spool or poppet type is suitable, although other valve types may be used. valve 14
and 16 orifice sizes are selected to provide sufficient air flow. A plurality of needle valves 18, each associated with a respective solenoid valve 14 or 16, are disposed in holes along rows within the upper surface 12c of the body block 12. A row of holes is provided on the surface 1 of the body block 12 for receiving a spring-loaded or ball-type check valve 20.
It is also located within 2c. As will be discussed below, the ball check valve 20 provides rapid actuation and controlled venting, and the spring check valve 20 provides controlled actuation and rapid venting. . A low pressure plenum 22, a high pressure plenum 24, an overflow pilot air plenum 25, and each exhaust plenum 26 and 28 are formed within the body block 12.

If desired, a single exhaust plenum may be used and may also be connected to a vacuum source. Plenums 22, 24, 25, 26 and 28 are all
Body block 1 parallel to surfaces 12b and 12c and generally perpendicular to the row of solenoid valves.
It is appropriate that the

A channel is provided between the low pressure plenum 22 and the high pressure plenum 24 to each bore 29 adapted to receive a selector mechanism 30 in the surface 12a. These inner holes 29 are located on the surface 1
It extends inwardly in a direction generally perpendicular to 2a. Each bore 29 communicates with an air passageway 32 formed in body block 12 and extends in a direction generally parallel to surface 12a. As discussed below, selector mechanism 30 operates to selectively establish communication between low pressure plenum 22 or high pressure plenum 24 and air passageway 32, or to block the flow of pressurized air to the air passageway.

Each selector mechanism 30 and the air passage 3 for communication
2 relates to a particular solenoid valve 14. Each air passageway 32 communicates with a respective first bore 33 extending generally perpendicularly inwardly from the body block 12 and surface 12a. Each bore 33 receives a pressure regulating means 34. Conditioned air from each pressure regulating means 34 is provided via an associated air passageway 36 to an associated pressure gauge 38 and to an inlet port 40' of an associated solenoid valve 14.

There is a respective corresponding passageway 42 extending generally perpendicularly from the surface 12d of the body block 12 in alignment with the outlet port 42' of each solenoid valve 14. Passage 42 communicates with the corresponding valve block outlet port 44 through an associated needle valve 18 and spring or ball check valve 20.

Each exhaust passage is provided within block 12 and extends vertically from surface 12b. Each exhaust passage is positioned in alignment with the exhaust port 46' of the associated solenoid valve 14 and exhaust plenum 2.
Connects with 8. The evaporated pilot air is also provided to each valve 14 via a pilot air plenum 25.

An example of the operation of valve block 10 with respect to a particular valve 14 is described below. In the following description, it should be understood that the components and passageways of the valve block are associated with this valve 14. As further detailed below, the selector mechanism 30 provides a high or low pressure air-to-air passageway 32. Air pressure is brought to the desired level via pressure regulating means 34 (described below) and then supplied to the inlet of the solenoid operated valve 14. A solenoid operated valve 14 operates to selectively communicate the inlet passage 40 to the outlet passage 42 and the outlet passage 42 to the exhaust passage 46 depending on the state of the solenoid. Valve 14 may be either normally open or normally closed. Now the above valve 14
Assuming that is a normally closed type,
Communication is established between inlet passageway 40 and outlet passageway 42 when the solenoid is energized by an electronic controller (not shown). In this way, the outlet passage 42 supplies air at a regulated pressure to the associated needle valve 18 and ball or spring check valve 20. If a ball check valve 20 is used as shown in FIG. 1b, air is delivered through the needle valve and (quick) ball check valve 20 to the outlet port 44 of the valve block. If the spring type check valve 2 as shown in Fig. 1c
If 0 is used, air is pumped through the needle valve 18 to the outlet port 44 in a controlled amount.

When the solenoid is deenergized, the outlet passage 4
2 and the exhaust passage 46 is established. Therefore, if ball check valve 20 is used, the return of exhaust air from components of the IS molding machine (e.g., pneumatic cylinders, etc.) is controlled through outlet passage 42 and exhaust passage 46 via needle valve 18. delivered in the same quantity. If a spring check valve is used, most of the air is quickly pumped through the spring check valve 20.

Each component of a typical IS molding machine (e.g. pneumatic cylinder) operates at a single pressure, e.g.
everything works. Therefore, the valve block 10
The solenoid-operated air valves associated with these valve block components need only be adapted to provide a single air pressure supply to these particular components, and the solenoid-operated air valves associated with these valve block components must be connected directly to one of the pressure sources. It is sufficient if it is connected to Therefore, the solenoid operated valve 16
The inlet ports of communicate with the low pressure plenum 22 via respective corresponding passages 50. Body block 12 is also provided with a respective outlet passage 52 connecting the outlet port of valve 16 to the associated needle valve 18 and spring-loaded or ball-loaded check valve 20 and thence to the associated outlet port 54. Link. Similarly, each exhaust passage 56 communicates between the exhaust port of each valve 16 and the exhaust plenum 26. Each valve 16 is also provided with pilot air passed through a plenum 25. The operation of air valve 16 is identical to that of valve 14 except that the outlet air is provided at a single fixed pressure.

The use of separate low and high pressure plenums in conjunction with selector mechanism 30 and pressure regulating means 34 provides sufficient airflow over a very wide range of operating air pressures. As mentioned above, the selector mechanism 30 is connected to either the low pressure plenum 22 or the high pressure plenum 24.
selectively connected to the pressure regulating means 34, the range of available operating pressures is expanded. Furthermore, the selector mechanism 30 also serves to block airflow to this adjustment means. Here, Fig. 2a, 2nd
The structure and operation of a first embodiment of one selector mechanism 30 will be described with reference to FIGS. b and 2c. Again, in the following description, it should be understood that each valve block component and each passageway shown is associated with this exemplary selector mechanism.

The selector mechanism 30 is located on the surface 1 of the main body block 12.
It includes a hollow cylinder 60 slidably received in bore 29 in 2a. Bore 29 communicates with both low pressure plenum 22 and high pressure plenum 24 via respective passages 64 and 66. Passages 64 and 66 are offset from each other in the axial direction of bore 29. Window 68 is high pressure plenum 24
is provided in selective alignment with the passageway 66 from.

The cylinder 60 is actually divided into three working zones corresponding to the three states or positions it occupies. Respective notches 70, 72 and 74 are provided at locations corresponding to each desired condition. A latching device 76 is included that cooperates with each notch to maintain the cylinder 60 in the desired position under pressure and to prevent pressure from each plenum from forcing the cylinder 60 out of the body block 12. in fact,
An automatic mechanism for state control may be used, suitably under control of the glassware forming machine controller. For example, cylinder 6
0 is adapted to cooperate with a worm screw or lead screw to position the cylinder within bore 29. Similar mechanisms for manual actuation may be substituted for the simple notch and key latch shown.

FIG. 2a shows cylinder 60 in a first condition with window 68 aligned with passageway 66 from high pressure plenum 24. FIG. Therefore, high pressure air is supplied from the plenum 24 through the window 68 to the cylinder 60.
is fed into the passageway 32 through the hollow interior of the . The top wall of cylinder 60 effectively blocks passage 64 from low pressure plenum 22. O for sealing
Suitably a ring is provided. These O-rings may be located on the cylinder 60, or may be incorporated into the body block 12, or may be provided within a suitable sleeve.

A second condition is shown in FIG. 2b where both the low pressure plenum and the high pressure plenum are blocked by the outer wall of cylinder 60. Again, an O-ring is provided for proper sealing.

A third condition, in which the low pressure plenum 22 is connected to the passageway 32, is shown in Figure 2c. In this case, cylinder 60 is retracted until notch 74 is aligned with latching device 76. High pressure plenum 24 is interrupted by the wall of cylinder 60. Here again, sealing is provided by appropriately placed O-rings. Thus, low pressure plenum 22 communicates with passageway 32 via passageway 64 and bore 29.

Introducing an off state provides a safeguard against false actuation of the solenoid valve. Furthermore, the off state allows the removal of a single pressure regulating means, pressure gauge or air valve without damaging the pressure characteristics of the entire valve block. Furthermore, this off state provides an additional safety element against leakage of various shutoff valves. This safety factor can be particularly important when replacing pressure regulators, pressure gauges or solenoid valves.

Next, a second embodiment 30a of the selector mechanism will be described with reference to FIGS. 5a to 5d.
The selector mechanism 30a is located on the surface 12a of the block 12.
includes a hollow cylinder or sleeve 150 rotatably received in a bore 29 therein. Like selector mechanism 30 in the embodiments described above, bore 29 communicates with low pressure plenum 22 and high pressure plenum 24 via respective passages 64 and 66. However, in this embodiment, each passageway 64 and 66
are aligned with each other in the axial direction of the inner hole 29,
In the radial direction, it is preferably offset by 180° about the periphery of the bore.

Cylinder 150 is received within bore 29 and adapted for rotational movement therein.
Clip 180 where the retaining ring is suitable
prevents axial (longitudinal) movement of cylinder 150 within bore 29. a respective O-ring 1 disposed in a groove along the inner surface of the inner bore 29;
82 and 184 provide a gas-tight cooperation between the exterior of cylinder 150 and the interior of bore 29, eliminating air leakage through that joint to passageway 32 or the atmosphere.

The cylinder or sleeve 150 will be explained in more detail with reference to FIG. 5d. Sleeve 150 is hollow, ie, includes an axial bore 152 extending centrally through the interior. The window or port 154 (similar to the window 68 of the selector mechanism 30) is connected to the passageway 64 or 66.
It is provided so as to selectively match with either one of the two. Thus, window 154 selectively provides communication between low pressure plenum 22 and/or high pressure plenum 24 and passageway 32 via axial bore 152 and bore 29. The cylinder 15 around the window 154
A groove 156 is formed on the outside of 0. This groove 1
56 is adapted to receive an O-ring 158 which provides a hermetic seal around window 154 between the exterior of cylinder 150 and the interior of bore 29.

Since the low pressure plenum 22 and the high pressure plenum 24 are aligned axially in the bore 29, conventional sealing techniques, such as O-rings placed radially around the periphery of the cylinder 150, do not allow these two plenums to be aligned. It should be recognized that it is ineffective in preventing communication between For this reason,
An O-ring 158 is positioned within the groove 156 in the shape of the window 154 to effectively sealingly isolate the window 154 from all but the selected plenum, both axially and radially. Inner hole 29
An O-ring 182 located within the plenum effectively isolates the passageway 32 from unselected plenums.

An axial bore 152 of cylinder 150 is adapted to slidably receive a shutoff piston 160. As best shown in Figure 5d, the piston 160 includes radial grooves 162 and 164 around its outer diameter for receiving O-rings 166 and 168, respectively. Piston 160 also includes a slot 170 axially disposed on its exterior. This slot 170 is connected to the cylinder 15.
It is adapted to cooperate with a set screw 172 or other tightening mechanism disposed in and cooperating with the hole 174 through the wall of the screw. Set・
Thread 172 and slot 170 cooperate to provide axial movement of piston 160 within bore 152 of cylinder 150 and prevent any radial or rotational movement of piston 160 within cylinder 150. Therefore, the torque applied to the piston 160 is applied to the cylinder 1 within the bore 29 in the body block 12.
50 rotations. piston 1
60 is a respective hole 17 which cooperates with a latch mechanism 76a (see FIGS. 5a-5c) similar to notches 70, 72 and 74 of selector mechanism 30.
6 and 178.

As in the case of the representative selector mechanism 30 described above,
Selector mechanism 30a in this example selectively connects low pressure plenum 22 or high pressure plenum 24 to passageway 32, or isolates passageway 32 from both plenums. As discussed in further detail below, selection of the respective high or low pressure plenum is accomplished via rotating cylinder 150, aligning window 154 with either passage 64 or 66 for the pressure plenum. Shut-off or isolation of passageway 32 is accomplished by axial movement of piston 160 within bore 152 of cylinder 150. The operation of the selector mechanism 30a will now be described in further detail with reference to FIGS. 5a-5c.

As shown in FIG. 5a, when the piston 160 fully enters the bore 152 of the cylinder 150, the passageway 32 is effectively isolated from both the low pressure plenum 22 and the high pressure plenum 24. The degree of entry into cylinder 150 is defined by set screw 172 which cooperates with slot 170.
An O-ring 166 is inserted into the bore 152 between each plenum and the passageway 32. here,
Assuming that window 154 is aligned with one of passages 64 and 66, O-ring 158 effectively isolates the selected plenum (low pressure plenum 22 of FIG. 5a) from the non-selected plenum. O-ring 168 prevents air leakage from the selected plenum to the atmosphere. Similarly, O-rings 182 and 184 prevent air leakage from unselected plenums to passageway 32 and the atmosphere, respectively.

To supply pressurized air to passageway 32, piston 160 is connected to set screw 172 and slot 1.
70 to the maximum range allowed. The cooperation of set screw 172 and slot 170 imparts a torque to piston 160 to rotate cylinder 150 to open window 154 in selected low pressure plenum 22 (see Figure 5b) or high pressure plenum 24 (see Figure 5c). (see figure) and associated passageway 64
Or match with 66. When window 154 is aligned with the selected passageway 64 or 66, communication is established between the plenum and passageway 32 through window 154, axial bore 152, and bore 29. O-ring 15
8 prevents pressure loss due to air leakage from the selected plenum along the junction of cylinder 150 and bore 29.

Passageway 32 is isolated from the unselected plenum by O-rings 158 and 182. O-ring 158 prevents air leakage from unselected plenums to window 154. O-ring 182 prevents air leakage from unselected plenums through the junction of cylinder 150 and bore 29.

Air leakage to the atmosphere is prevented by O-rings 166, 168 and 184. Air leakage from unselected plenums is prevented by O-rings 184. Air leakage to the atmosphere from selected plenums through the junction of piston 160 and bore 152 is prevented by O-rings 166 and 168.

Latching mechanism 76a is suitably a pin received within bore 176 or 178 to retain piston 160 in its on or off position, respectively. It should be appreciated that the selector mechanism 30a is particularly advantageous in that the locking clip 180 prevents the selector mechanism from being dislodged from the block 12 under pressure.
Similarly, set screw 172 and slot 170 ensure that piston 160 is not removed from the mechanism under pressure. Thus, latch mechanism 76a, clip 180 and set screw 172 provide a fail-safe safety mechanism. The latch mechanism 76a and the selector mechanism 30 are particularly suited for mechanization and computer control of the selector mechanism.

Pressure adjustment means 34 provide fine adjustment of the selected high or low pressure. The pressure regulating means must be relatively small in size to facilitate the arrangement of a large number of regulated pressure valves within the valve block. It is desirable to provide at least eight regulated valves to facilitate changes and make fine adjustments to the typical work of an IS molding machine for maximum production. At the same time, it is necessary that the pressure regulating means operate without too much interference with the air flow and be tolerant of air contaminants in the air.

A preferred embodiment of pressure regulating means 34 having these characteristics is shown in FIG. It should be understood that the passageway and valve block components referred to in the following description are associated with certain regulating means 34. A cylindrical bore 33 is provided within body block 12 and extends perpendicularly from surface 12a and communicates with passageways 32 and 36. Pressure regulating means 34 are received within cylindrical bore 33 and secured to body block 12 by suitable fastening means, such as bolts. Passages 32 and 36 are offset from each other along the axis of bore 33. Cylindrical inner hole 33
A poppet valve seat 82 is arranged inside. The valve seat 82 has a window 86 located in alignment with the air passageway 36.
It includes an axial lumen 84 that communicates with the lumen 84 . In practice, the valve seat 82 is adjusted so that the adjustment means 34 are connected to the main body block 12.
It is removably attached to a sleeve 85 that includes a flange that is secured to the sleeve 85.

Sleeve 85 includes an axial chamber 87 for slidably receiving a piston 88 . piston 8
A small escape window is provided in the front of the chamber 87. An adjustable tension spring mechanism 90 is used in conjunction with the piston. spring 92
is aligned with piston 88 at one end and screws 94
is journalled within sleeve 85 at the other end. The screw tightening mechanism controls the internal pressure of the piston 88. Piston 88 has a shaft 96 slidably disposed through a central axial bore within valve seat 82.
including. A shaft 98 is arranged within this shaft portion 96 . The shaft 98 is secured to the piston end by suitable locking means and has a poppet 100 located at the other end for cooperating with the valve seat 82. Considering various circumstances, it may be advantageous to dispose the poppet 100 directly on the piston shank 96, excluding the internal shaft 98.

The suction means 102 is connected to the passage 36 and the valve seat 82
The piston chamber 87 is journalled inward to apply pressure in the passageway 36 to the piston chamber 87 at the back of the piston 88 and to draw fluid in the passageway 32 into the passageway 36. The suction means 102 may be placed at any location via the valve seat. However, a tapered end is desirable to create an eddy current so that air contamination does not clog the suction means.

The pressure is controlled by adjusting the tension of spring 92. Piston 88 slides within valve seat 82 and displaces poppet 100 from valve seat 82.
The relative displacement of poppet 100 and valve seat 82 is established in an equilibrium position when the pressure applied by suction means 102 is essentially equal to that applied by spring 92. Therefore, the pressure applied within air passageway 36 is controlled by adjusting spring 92. It should be appreciated that because the central lumen of poppet seat 82 and window 86 are both relatively large in diameter, approximately equal to the diameter of air passages 32 and 36, the restriction to flow is relatively small. . moreover,
The air flow through the regulating means 34 is relatively less turbulent compared to conventional pressure regulating means.

By choosing an even lower pressure supply,
By further displacing the poppet from the valve seat 82, less restriction to flow is achieved and even lower pressures are achieved.

This simplicity of the pressure regulating means 34 due to the small number of parts is itself very advantageous in terms of maintenance and costs of the molding machine. If a certain pressure regulating means malfunctions for some reason, the pressure to the regulating means is cut off by the selector mechanism 30, and the malfunctioning regulating means is fixed to the main body block 12. Replacement and installation can be accomplished within just a few minutes by unscrewing the bolts, removing the adjustment means, replacing them with new ones, and securing the replacement parts with two fixing bolts.

It should also be understood that no evacuated air is required for the operation of the regulating means 34. The air flow through the regulating means is relatively open and free of turbulence.
Therefore, it is less likely to become clogged. The swirl created by the tapered end of the suction means 102 prevents clogging of the suction means. The pressure is a spring mechanism 9
0, contaminants are not a problem for regulating pressure generation and therefore do not require the use of pressurized air. It should be understood that suitable O-rings are provided for sealing.

As mentioned above, and referring now again to FIG. 1, each valve 14 and each valve 16 communicate with outlet ports 44 and 54 of the valve block. Outlet port 4
4 and 54, therefore, the proper inlet/kiss plate of the manifold/kiss plate of the IS type forming machine.
Must match the port. In the prior art, valve blocks had to be specially designed for a particular type of IS molding machine, or the piping had to be curved to provide proper alignment. Other valve blocks were relatively large metal blocks with angled through holes for proper matching. However, both piping and bore block systems tend to be bulky, expensive relative to the space used, expensive to manufacture, and/or expensive to install. .

In accordance with one aspect of the invention, a particularly advantageous adapter plate 110 is provided. Adapter plate 110 is shown in FIGS. 1 and 4. adapter plate 1
10 has a first surface 110a secured to surface 12d of body block 12 by an intervening gasket 112. Appropriate gasket 1
14 and a second opposing surface 110b to the kissing plate 116 of the manifold of the IS forming machine.
is becoming fixed. The kiss plate is connected to the respective components of the IS forming machine (eg, pneumatic cylinders, etc.) by copper tubing, pipes, etc. (not shown). A plurality of holes 118 are formed through the adapter plate 110 at relevant locations to align with the entrance ports 120 of the kissing plate. Surface 110a of adapter plate 110 includes holes 118 to the desired valve block outlet ports 44.
A channel extending to is formed, preferably by milling or casting. Although it should be understood that similar channels and holes are used to provide communication between the valve block outlet port 54 and the kiss plate port 120, FIG. is omitted.

If desired, an intermediate plate 111 can be inserted between gasket 112 and surface 12d of body block 12 to facilitate sealing adapter plate 110 to body block 12. Intermediate plate 111 includes internal bores that align with each valve block outlet port and communicate with the associated adapter plate channel. Main block 12 and intermediate plate 1
11 is achieved by a resilient sealing means such as an O-ring placed in a groove having the shape of a bore. Intermediate plate 111 is bolted to adapter plate 110 by bolts located flush with the surface of the intermediate plate 111 to provide sealing pressure to gasket 112. The adapter plate 110 and the intermediate plate 111 are bolts (not shown) that connect the kiss plate 116 to the main body block surface 12d.
The valve block outlet port and the kiss plate inlet port are press-fitted by a press fit. The intermediate plate 111 has a smooth and flat surface 110a.
and reducing the mandatory requirements of 12d.

Adapter plate 110 adapts valve block 10 to any shape of IS forming machine kissing plate without changing adapter wall thickness, using expensive forming techniques, or requiring time-consuming plumbing work. It should be understood that it can be used to Additionally, adapters can be used to change the function of the solenoid/component, if desired, without the need for time-consuming re-piping from the manifold kiss plate to each component of the IS forming machine (e.g. pneumatic cylinder, etc.). 110
itself can be easily changed. Therefore, a single, standardized valve block outlet port shape may be used, and the shape provided by the adapter plate 110 is made to match any kiss plate inlet port shape. .

Valve block 10 is easily adaptable to provide vacuum for one or more of the various functions of a glass forming machine. In fact, in order to provide a vacuum for a certain function, a certain solenoid valve 1
The inlet port 40' of 4 is insulated from pressurized air;
The exhaust port of this valve 14 is connected to a vacuum source (pump) rather than to an exhaust manifold. This is accomplished by providing vacuum operation to valve 14 and providing appropriate passage within block 12. Alternatively, an adapter plate as shown in Figures 6a and 6b or 7a
Any suitable selector mechanism may be used, such as those shown in Figures 7d and 8a-8d.

In either case, the needle valve 18 associated with this particular valve 14 is replaced by a suitable strainer or secondary filter 202 (shown in Figure 6a). Inner bore housing strainer 202 (or needle valve 18) and wall 12 of block 12
A passage 204 (not shown in FIG. 1) is provided between d and d. To provide an unobstructed passageway, a port is provided in the wall of the strainer 202 in alignment with the passageway 204 and a bore is provided through the plug associated with the check valve 20.

Adapter plate 110 is formed with appropriate channels to match passageways 204 with appropriate ports in IS style kissing plate 116. Particular solenoid valves 14 selectively provide either positive air pressure or vacuum to any IS function. Typically, different functions require pressurized air and vacuum, so vacuum and pressurized air are applied to different kiss plate ports. Needle valve 18 and strainer 202 act as a selector mechanism as to which outlet port valve 14 should be associated. If the valve 14 is adapted for vacuum operation, passage is provided through the strainer and passageway 204, while the associated passageway 44 originally used with the needle valve 18 is connected to the strainer 204.
sealed or insulated by the outer wall of 02. Similarly, although not shown in FIG. 1, passageway 204 is blocked or sealed by needle valve 18 when associated valve 14 is used to provide positive air pressure.

Alternatively, a check valve 20 or a sleeve or plug (not shown) associated with needle valve 18 and strainer 202 can be used to select the appropriate passage. The sleeve includes respective ports aligned with passageways 202 and 44, respectively, but offset from each other at a radial angle (eg, 90 degrees). O-rings or the like are placed on either side of the passageway around the edges of the sleeve to provide a seal, and the passageway 20
4 and 44. The appropriate passageway 44 or 204 will be selected by rotating the sleeve. in this way,
By a relatively simple mechanism, the outlet port associated with the solenoid-operated valve 14 can be used to supply air for one IS function without requiring any changes to the piping of the IS molding machine. giving and second is
The expression function can be modified to provide a vacuum.

As mentioned above, valve 14 can be converted from positive pressure operation to vacuum mode operation by adapter plate 200. Adapter plate 200 is positioned between solenoid operated valve 14 and surface 12b of body block 12 to provide the necessary connections to provide the vacuum. The adapter plate 200 is connected to the valve 14
effectively insulating the inlet port 40' from the valve block passageway 36. To this end, the O-ring is placed around the edge of the passageway 40 (which gives the shape of the passageway 40) in a groove formed in the surface 12b of the block 12. Passages 206 and 207 are provided through adapter plate 200 to connect passageway 42 to the outlet port of valve 14 and to supply pilot air to valve 14, respectively. Adapter plate 200 also effectively seals passageway 42 from exhaust plenum 28. O-rings are placed in grooves in the shape of passages 40, 42 and 46 to establish a seal. A passage 208 in the adapter plate 200 has one port aligned with the exhaust port 46' of the valve block 14 and a corresponding adapter port 12d on the surface 12d of the body block 12 for connection to a line from a vacuum source (pump). Another port on the surface of plate 200 is provided. The line from the vacuum pump to passageway 208 is suitably a flexible hose and/or rigid tubing (not shown). Alternatively, the second port of passageway 208 is aligned with a corresponding port in surface 12b of body block 12 and positioned between pilot air plenum 25 and exhaust plenum 28 as shown in FIG. 6b. It can be placed in communication with an internal vacuum passageway or plenum.

In operation, when the solenoid valve is in the position corresponding to exhaust in positive air mode, valve 1
Communication between outlet port 42' of 4 and the vacuum pump is via passageway 208. In this way, the vacuum is applied to passage 42, strainer 202, passage 2
04, and IS via the port on the adapter plate 110.
Provided to the expression function.

The secondary strainer 202 not only acts as an exit port selection mechanism, but is also drawn into the valve block by the vacuum, even though IS molding machines are typically provided with an external strainer. It also serves to protect the valve 14 from damage caused by glass particles or the like. Strainer 202 is easily accessible for convenient periodic cleaning and/or replacement.

Adapter plate 200 is particularly advantageous in that it is extremely inexpensive and simple. but,
To install an adapter plate 200 to convert a solenoid-operated valve 14 to a vacuum supply, remove the valve 14 from the valve block 12, position the adapter plate 200, and remove the valve 14 and adapter plate 200 from the block. 12 and (if the vacuum line is not located within valve block 12) means for connecting the vacuum line to adapter plate 200. An alternative arrangement for selectively adapting a solenoid valve 14 to either positive air or vacuum mode operation without requiring removal of the valve 14 is shown in FIGS. 7a-7d and 8a. 8d to 8d.

Referring now to FIG. 7a, a selector mechanism is shown for controllably applying the associated solenoid operated valve 14 to positive air mode operation or vacuum mode operation. As mentioned above, selector mechanism 250 connects strainer 202 and passageway 204.
It can be used in connection with. Valve block 12 is provided with a bore 252 extending inwardly from surface 12a. The inner hole 252 is located on the surface 1
2b and passages 40, 42 and 46
It is appropriate to communicate with The innermost end of the inner hole 252 communicates with a second inner hole 254 that opens outward in the surface 12d of the main body block 12. This second
The bore 254 of is adapted to receive an external line (flexible hose or rigid tubing) from a vacuum pump (not shown). Alternatively, the innermost end of bore 252 can be configured to communicate with a vacuum plenum (not shown) inside valve block 12. A retainer 255 in which the selector mechanism 250 is rotatably received within the bore 252 and is suitably bolted or otherwise secured to the surface 12a of the block 12.
Collaborate with.

The selector mechanism 250 includes a rotatable sleeve 25
6 and a piston 258 rotatably and slidably disposed within the sleeve 256. Sleeve 256 suitably extends from bore 252 beyond surface 12a of body block 12. A groove is provided around a portion (eg, 90 degrees) of the outer wall of the sleeve 256 and cooperates with the legs of the retainer 255 to rotatably retain the sleeve 256 within the bore 252. Suitably, the extension of the sleeve 256 is provided with a wrench flat to facilitate rotation of the sleeve.

For positive air mode operation, sleeve 256 includes appropriate ports to provide the necessary communication between passageways 40, 42, and 46 and solenoid-operated valve 14. Three sets of two ports 260a
-260b, 262a-262b, 264a-2
64b is provided within the sleeve 256.
The respective ports of each set are arranged in axial alignment but radially offset 180 degrees with respect to each other. Ports 260a-260b,
262a-262b and 264a-264b are disposed in axial alignment with passageways 40, 42 and 46, respectively. Port 260a-260
b, 262a-262b and 264a-264
Each set of b is shown in Figure 7b, Figure 7c, Figure 7d, Figure 8.
It is shown in cross-section in Figures b, 8c and 8d.

Sleeve 256 also includes the ports necessary to perform vacuum operations. A set of ports 266a-26
6b is the passage 42 (and ports 262a-262
b), but radially offset 90 degrees from ports 262a-262b. Ports 262a-262b and 266a-266b are best seen in Figures 7c and 8c. To provide adequate sealing of passageways 40 and 46 for vacuum mode operation,
Insert an O-ring etc. 26 into the groove on the outer surface of the sleeve 256.
8 and 270 are arranged. O-ring 26
8 and 270 are disposed with their respective centers axially aligned with passageways 40 and 46 and radially aligned with each other;
60a-260b and 264a-264b, radially offset by, for example, 90 degrees. Port 272 is provided in axial alignment with passageway 46 but is radially offset from O-ring 270 by 180 degrees.

Additional sealing may be provided by appropriately placed O-rings or the like. O-ring 274,2
76, 278 and 280 are located in grooves around the outer wall of sleeve 256. O-ring 27
4 prevents air leakage from the passageway 40 to the atmosphere through the joint between the sleeve 256 and the bore 252. O
Rings 276 and 278 effectively isolate passageways 40, 42, and 46 from each other. O-ring 280 prevents leakage from passageway 46 to the atmosphere through the junction of sleeve 256 and bore 252.

Piston 258 cooperates with sleeve 256 to selectively provide suitable passage for positive air or vacuum operation. Piston 258 has three spaced apart radial bores 282, 284.
and 286. Bore 282, 284 and 286 are connected to ports 260a-2 when piston 258 is fully received within sleeve 256.
60b, 262a-262b, and 264a-
264b. Sealing is provided by piston 25 on both sides of bores 282, 284 and 286 and at side wall ports of passageway 288.
This is done by a suitable O-ring placed around the outer wall of the 8.

A further passageway 288 is formed in the piston 258 and connects the outlet of the valve 14 and the exhaust port 4.
6' in the side wall of piston 258 spaced from bore 286 by a distance corresponding to the distance between It communicates with the inner bore 254 via the inner bore 252).

Positive air mode operation is achieved by rotating sleeve 256 to close ports 260a-260b, 262a-26.
2b and 264a-264b to passages 40, 42
and 46, respectively, and the sleeve 25
6 fully engages the piston 258 in the inner bore 28.
2,284 and 286 to ports 260a-26
0b, 262a-262b and 264a-264
This is done by matching each with b. In this way, passageway 40 (port 260
a-260b and bore 282), and passageway 42 communicates with the outlet port of solenoid-operated valve 14 (via ports 262a-262b and bore 284). In addition, the passage 46 (port 2
64a-264b and bore 286) with the exhaust port of solenoid-operated valve 14. The side walls of the ports in passageway 288 do not align with any ports in sleeve 256. Due to the sealing O-ring, the vacuum pump is thus isolated from the working path.

To perform vacuum mode operation, sleeve 2
56 is rotated, for example, 90 degrees to align sealing O-rings 268 and 270 with passageways 40 and 46, ports 266a-266b with passageway 42, and sleeve port 272 with the exhaust port of valve 14. . Then the piston 258
is partially withdrawn from sleeve 256 to align bore 286 with ports 266a-266b and to align sidewall ports of passageway 288 with ports 272 of the sleeve. In this manner, passageways 40 and 46 are sealed and passageway 42 is routed through ports 266a-266b and bore 286 to valve 1.
The exhaust port of valve 14 communicates with the vacuum source through port 272, passage 288 and bore 254.

An axial position of the piston 258 that corresponds to alignment of these bores with the appropriate ports of the sleeve 256 is within the piston 258 at two radial positions of the sleeve as well as an axial position corresponding to the alignment position. Retainer 255 extends through one of two ports 292 and 294 in sleeve 256 corresponding to the two receiving lumens.
Positioning is facilitated by the use of securing pull pins 290 extending from the holder.

The above description assumes that sleeve 256 is rotated relative to both block 12 and piston 258. It should be understood that piston 258 may be capable of being rotated together with sleeve 252. In such a case, a lateral bore that is axially aligned but 90° offset from bore 286 in the radial direction shall be provided, and the side wall port of passageway 288 will be in the illustrated embodiment. Assume that it is rotated 90 degrees from the object.

The selector mechanism 250 readily converts a given solenoid operated valve 14 from positive air mode operation to vacuum mode operation and vice versa. This conversion simply interchanges needle valve 18 and strainer 202, and sleeve 25
6 and inserting or withdrawing the plunger 258.

Near instantaneous and constant vacuum operation by using adapter plate 200 or selector mechanism 250 with valve 14 to provide direct electronic control of the vacuum at the valve block rather than at the bed level of the IS molding machine. It should be understood that Not only is a second valve bank unnecessary compared to conventional systems, but delays and mismatched operation associated with the long lengths of piping between the control valves and the IS function are eliminated. It will disappear. Additionally, by removing the valve from the bed level to the valve block and using a secondary filter or strainer 202, valve malfunction is greatly reduced.

It should be understood from the above description that the present invention provides a particularly advantageous electronic valve block. The valve block is compact in size yet capable of providing sufficient flow of output air through the first and second plenums from low and high pressure fluid sources over a wide variety of pressures. It is. Furthermore, the shape of the valve block is such that the respective valves and pressure regulating means within the block are conveniently shaped so that they can be removed for inspection or service without the need to disassemble or remove the entire valve block. For example, even in the event of a breakdown, it is possible to respond quickly and there are advantages such as being able to prevent a decrease in the operating rate of the machine. Furthermore, by using an inexpensive and compact adapter plate, the valve block can be provided with a suitable piping system for each molding machine, thereby avoiding complicated piping and IS
It can be applied to any shape of manifold of a type molding machine.

Additionally, individual solenoid-operated valves may provide positive air pressure to one IS function, or provide a vacuum effect to another IS function, or the like to another IS function. It can be easily adapted to do the following. Conversion from positive air operation to vacuum or vice versa is accomplished without the need for replumbing of the IS molding machine and with minimal downtime of the machine.

It will be understood that the above description is an illustrative embodiment of the invention, and the invention is not limited to the particulars shown. For example, although the valve block was described in the context of a machine for forming glass products, it could be any electronically controlled,
It can also be easily applied to hydraulically operated devices. Similarly, it may be desirable to mount all pressure gauges 38 at remote locations. Valve blocks according to the invention can also be used by those skilled in the art to control one or more fluid passages and accommodate a variety of solenoid-operated valves, including, for example, a single valve that controls multiple IS functions. It can be easily converted. These and other embodiment modifications may be made in the design and construction of the respective components without departing from the spirit of the invention as expressed in the appended claims.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a typical embodiment of a valve block according to the present invention. FIG. 1a is a fluid pressure circuit diagram suitable for the embodiment of FIG. 1, and FIGS. 1b and 1c are partial sectional views showing each structure of the check valve in the embodiment of FIG. 1, respectively. Figure 2a, Figure 2b, Figure 2c
The figures are cross-sectional views showing various states of the selector mechanism shown in FIG. 1. FIG. 3 is a sectional view of a preferred representative embodiment of pressure regulating means according to another aspect of the invention.
FIG. 4 is a front plan view of an adapter plate according to another aspect of the invention. Figures 5a, 5b and 5c are cross-sectional views showing various states of a second representative selector mechanism. FIG. 5d is an exploded view showing another embodiment of the selector mechanism of FIGS. 5a, 5b and 5c.
Figures 6a and 6b are cross-sectional views of the valve block of Figure 1 applied to a vacuum supply; Figures 7a and 7b
Figures 7c, 7d and 8a, 8b
Figures 8c and 8d are cross-sectional views of the air/vacuum selector mechanism. Explanation of symbols: 10...Valve block; 12...Main block; 14, 16...Internal air pilot solenoid operated valve; 18...Needle valve;
20...Spring type or ball type check valve; 22...
...Low pressure plenum; 24...High pressure plenum; 26,
28...exhaust plenum; 29, 33, 62, 8
2,152,252,254,282,284,
286... Inner diameter; 32, 36, 42... Air passage; 30... Selector mechanism; 34... Pressure adjustment means; 40... Inlet port; 44, 54... Outlet port; 46, 56... Exhaust passage; 60,150...
...Cylinder; 64, 66, 204, 206, 20
7,208,288...Aisle; 70,72,74
...Notch;76...Latching device;82...
Poppet valve seat; 90... tension spring mechanism;
92, 94...Spring; 100...Poppet structure;
102... Suction means; 116... Kissing plate;
156, 162, 164...groove; 158, 16
8,182,184...O ring; 174,17
6,178...hole; 256...sleeve.

Claims (1)

[Scope of Claims] 1. Valve block 10 for actuating each component of the machine and particularly adaptable to an independent station glassware forming machine.
The valve block 10 is adapted to provide selective fluid communication between the inlet port 40' and the outlet port 42' and between the outlet port 42' and the exhaust port 46' of the valve means 14. In cooperation with at least one valve means 14, said valve means 14 is removably secured to the outer surface of said valve block 10, said valve block 10 comprising a body 12 and a first valve disposed within said body 12. and second plenum 22, 24
and the inlet port 4 disposed within the body 12
0', an output passage 42 communicating with the outlet port 42' disposed within the valve block 10, and an output passage 42 communicating with the exhaust port 46' formed within the valve block 10. a discharge plenum 28, the output passageway 42 being connected to machine components, the first plenum 22 being connected to a fluid supply at low pressure and the second plenum 24 being connected to a fluid source at a low pressure. a removable valve means 14 connected under pressure to a fluid supply;
A selector mechanism 30 is provided within the body 12 for selectively connecting the first and second plenums 22, 24 to a first passageway 32 for selectively supplying fluid at low and high pressures to the body 12. The selector mechanism 30 includes at least one inner bore 29 extending from the outer surface 12a of the valve block 10 and communicating with the first fluid passageway 32, the first plenum 22 and the inner bore. 29; at least one third fluid passage 66 communicates between the second plenum 24 and the bore 29; Fluid communication is selectively provided between the plenum 22 and the first fluid passage 32 or between the second plenum 24 and the first fluid passage 32, and the first fluid passage is connected to the first fluid passage 32, respectively. A cylinder 150 received within the bore 29 for isolation from both the first plenum and the second plenum.
The above-mentioned valve block is characterized in that it consists of.