MX2007014760A - Remote-supervisory flaskless molding machine. - Google Patents

Abstract

A remote-supervisory flaskless molding machine, wherein the fluid pressures of first fluid cylinders (122) and (123) moving a cope (102) and a drag (103) close to and apart from each other, a second fluid cylinder (110) rotating the cope, the drag, and a match plate (105), a third fluid cylinder (129) separating an upper flask from the match plate, and a fourth fluid cylinder (138) extracting the cope and the drag from the upper flask (102) and a lower flask (103) in pairs and the pressure of a compressed air in a filling mechanism (11) filling a foundry sand to the upper and lower flasks by the compressed air are measured by sensors. The measured values by these sensors are transmitted to a monitoring tool (32) by a transmitter (31) through the Internet or an intranet (33) where these values are analyzed and the analyzed results are displayed.

Description

MOLDING MACHINE WITHOUT REMOTE SUPERVISION BOXES FIELD OF THE INVENTION This invention relates to a boxless molding machine in which the mold boxes are removed from the pre-stacked molds that have been formed inside the boxes, and in particular to such a machine that is suitable for operating under a remote monitoring.

BACKGROUND OF THE INVENTION For example, WO2005 / 089983 Al, assigned to the assignee of the present application, proposes a boxless molding machine that is adapted to be operated with hydraulic pressure. In this boxless molding machine, its driven parts (for example, the upper and lower molding boxes for use in molding processes) are driven mainly by means of hydraulic mechanical units. In this way, a plurality of hydraulic cylinder systems are provided. Such a boxless molding machine also uses compressed air or hydraulic fluid to fill the upper and lower molding boxes with molding sand to make molds. Typically, a sand-filling device injects the molding sand into the upper and lower molding boxes by compressed air, while the molding sand Inside the sand filling device is fluidized by the compressed air additionally. The conventional boxless molding machine does not involve a particular method or equipment to provide quantitative diagnostics to determine if the hydraulic cylinder systems, the sand filling device, etc., are in their normal operating states. In this way, monitoring these operating states should only be based on the observation of a human operator around the molding machine.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a boxless molding machine that allows precise monitoring of the operation states thereof in remote locations. The present invention provides a boxless molding machine for manufacturing upper and lower molds without boxes. The molding machine comprises: an upper molding box and a lower molding box, each molding box defining an opening in which the corresponding mold is manufactured and has at least one sand supply port which supplies the molding sand towards the opening, where the upper molding box and the lower molding box are supported in such way they can get closer and away from each other; a first cylinder system adapted to be actuated by variable hydraulic pressure to generate a driving force to cause the upper and lower mold boxes to move closer and further apart from one another; a correlation plate having an upper and lower face, wherein the correlation plate is provided to be inserted and removed from the upper and lower molding boxes; members of upper and lower compression, each member being able to be inserted into the corresponding molding box, while each member opposes the corresponding face of the correlation plate when the correlation plate is held between the upper and lower molding boxes in a ratio interleaved, so that the molding sand that is filled inside the molding boxes is compressed; a second cylinder system adapted to be actuated by a variable hydraulic pressure to generate a driving force to cause the upper molding box, the lower molding box and the correlation plate held between them to be rotated in unison between a position where the upper and lower molding boxes and the correlation plate are in their vertical positions and a position where the boxes of upper and lower molding and the correlation plate are in their horizontal positions; sand supply means, having a source of compressed air, for blowing the molding sand through the sand supply ports of the upper and lower mold box by compressed air in such a way that the upper molding boxes and lower in the vertical positions are filled with the molding sand; measurement means including a plurality of sensors for measuring at least the fluid pressures of the first and second cylinder systems, and the air pressure of the compressed air supplied from the source, respectively, transmission medium for transmitting the measured values to starting from the measuring means on a communication link; and means of analysis to receive and analyze the transmitted measured values and to display the results of the analysis. The sand supply means can also fluidize the molding sand by compressed air with a variable pressure from the source or an optional source, while the molding boxes are filled with the molding sand. In this case, the measurement medium also includes AND a sensor for measuring the air pressure of the compressed air used for the fluidization of the molding sand. The sensors of the measurement means may include a sensor for detecting the upper level of the molding sand within the sand supply means. The communication link can be by Internet or Intranet. Each cylinder system includes grouped cylinders that are composed of a plurality of hydraulic cylinders. The hydraulic pressure of each cylinder system is an oil pressure or a pneumatic pressure. The molding machine may further include an optional cylinder system that is adapted to be driven by the variable hydraulic pressure to provide a driving force to a driven part of the boxless molding machine. In this case, the sensors of the measuring means also include a sensor for measuring the hydraulic pressure of the optional cylinder system. For example, the optional cylinder system provides the driving force to the upper and lower compression members. The boxless molding machine can be adapted to use two pairs of molding boxes, in which an upper molding box and a lower molding box they form as a pair so that the molding machine is adapted to alternately form molds with the two pairs of molding boxes. In this case, the optional cylinder system includes a third cylinder system for generating a driving force to remove the upper mold box that is used to manufacture the upper mold, which is contained therein, of the correlation plate. , and a fourth system of cylinders to generate a driving force to detach the upper and lower molds from the pair of molding boxes that have been separated from the correlation plate. The optional cylinder system may include grouped cylinders comprising a plurality of hydraulic cylinders.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a front view of a boxless molding machine of the first embodiment of the present invention. Figure 2 shows a plan view, partly in cross section, of the molding machine of Figure 1. Figure 3 shows a front view of the boxless molding machine of the second embodiment of the present invention.

Figure 4 shows a plan view, partly in cross section of the molding machine of Figure 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Figures 1 and 2 illustrate a first embodiment of the boxless molding machine for manufacturing upper and lower molds without boxes of the present invention. This molding machine includes a support 1 of rectangular machinery. Located on the right side of the machinery support 1 is a mold box unit 27, which comprises an upper molding box 2, a lower molding box 3, and a pair of connecting rods 18 for connecting the boxes 2 , 3 molding each other so that they can get closer and away from each other. Each molding box, whose side wall has a sand filling port, defines an opening. In the embodiment, the connecting rods 18 are suspended from the upper molding ca 2, while the lower molding case 3 is mounted on the connecting rods 18 so that it can be lowered by a predetermined distance from the molding box 2 higher . The molding machine also includes a platform 4 for carrying a correlation plate 5 between the upper molding box 2 and the lower molding box 3 of the mold box unit 27 and to carry it out of the same, and a compression mechanism 9. Both faces of the correlation plate 5 have models. The molding box unit 27 is releasably attached to the compression mechanism 9 by means of a pair of jaws 28. The compression mechanism 9 is provided with upper and lower compression members (not shown) that can be inserted into and they can be extracted from the corresponding openings of the upper molding box 2 and the lower molding box 3, respectively. These openings oppose the correlation plate 5 when it is held between the molding boxes 2 and 3 in pairs. Each compression member, for example, may be a compression plate or compression foot, in which a plurality of compression feet are disposed, etc. These are well known to those skilled in the art. The compression mechanism 9 is rotatably supported by a support shaft 8. It remains standing in the center of the upper portion of the machinery support 1. The compression mechanism 9 can thus be rotated reversibly on the support shaft 8 in a normal plane. The compression mechanism 9 has a turning margin between a position where the upper and lower molding boxes 2 and 3 in pairs and the correlation plate 5 maintained between them are in their positions verticals and a position where they are in their horizontal positions. The molding machine also includes a pair of horizontal, hydraulic cylinders (a second hydraulic cylinder system), each of which is adapted to be actuated by hydraulic variable pressure, to rotate reversibly the compression mechanism 9. Mounted on the upper left side of the machinery support 1 is a sand supply device 11. Below it, a pair of supply sources (not shown) of compressed air is provided. The device 11 blows the molding sand towards the upper and lower molding boxes 2 and 3 in pairs, which are already placed in their vertical positions by the extension movements of the hydraulic cylinders 10, through one or more ports of Sand filling (not shown). The sand filling ports are provided in the respective molding boxes for introducing the molding sand therein by means of compressed air with a variable pressure supplied from the sources. While the molding sand is blown and inserted into the molding boxes in pairs, the molding sand can be floated or fluidized by the compressed air with the variable pressure from the source of supply to blow the molding sand or other source of molding. supply or sources of compressed air.

In the compression mechanism 9, a rotation frame 12 is rotatably supported by the support shaft 8 so that the frame 12 is reversibly rotated on the shaft 8 in a normal plane. The right side of the frame 12 is provided with a pair of vertically extending guide rods 13 which are placed in a rearward and frontal relationship with each other to form a predetermined interval therebetween. A vertically moving upper frame 14 and a vertically lower moving frame 15 are suspended vertically and slidably from and through the upper portions and lower portions, respectively of the two guide rods 13. The upper and lower frames 14 and 15 moving vertically, reciprocally move so as to approach each other and move away from each other by movements of extension and contraction of the hydraulic cylinders 16 and 17 (first hydraulic cylinder system), which each moves in the frame 12 and is operated by the variable hydraulic pressure. The molding machine also includes a plurality of sensors for measuring the variable hydraulic pressures (including an oil pressure or pneumatic pressure) of the hydraulic cylinders 16, 17 for driving the driven parts in the molding machine and the hydraulic cylinders, and to detect the variable pressures of the compressed air that blows the molding sand towards the molding space to fill it with the molding sand (and the compressed air to float or fluidize the molding sand, if required) used by the sand supply device 11. As in Figure 1, these sensors are electrically connected to a transmitter 31 to transmit their measured values. (The sensors are illustrated as lines extended from the transmitter 31, to simplify the Figure). The transmitter 31 communicates with a monitoring tool 32 to analyze the measured values from the sensors and display the results of the analysis, through a communication link 33, which includes, for example, the Internet or Intranet. The sensors connected to the transmitter 31 may include a sensor for detecting a higher level of the molding sand within the sand supply device 11, if desired. In the boxless molding machine configured as described above, the first correlation plate 5 is carried between the upper molding ca 2 and the lower molding box 3 in their horizontal positions by means of platform 4. hydraulic cylinders 16 and 17 are then contracted so that the correlation plate 5 is maintained between the molding box 2 upper and lower molding box 3, with an interleaved relation. The hydraulic cylinders 10 then extend to rotate the compression mechanism 9 to cause the upper molding box 2, the lower molding box 3 and the correlation plate 5 to be in their vertical positions, with the sand filling ports of boxes 2 and 3 of upper and lower molding by joining two injectors lla, each of which injects the molding sand of the sand filling device 11, respectively. In this state, the upper compression member and the lower compression member are inserted into the upper molding box 2 and the lower molding box 3 at the predetermined lengths to define the upper and lower molding spaces. The upper (or lower) molding space is defined by the upper (or lower) compression member, the upper molding case 2 (or the lower molding case 3), and the correlation plate 5. The sand-filling device 11 then blows the molding sand to fill the upper and lower molding spaces with the molding sand (while the molding sand is floated or fluidized, if desired). Consequently, the upper and lower compression members are then operated to compress the molding sand into the upper molding spaces and lower. The hydraulic cylinders 10 then contract to return the upper molding box 2, the lower molding ca 3, and the correlation plate 5 to their horizontal positions. The hydraulic cylinders 16 and 17 are then extended to lift the upper molding box 2 and to lower the lower molding box 3 to separate the correlation plate 5 from the upper and lower molding boxes 2 and 3, with the box 3 of lower molding being suspended from the connected rods 18. The platform 4 then removes the correlation plate 5 from between the upper molding box 2 and the lower molding box 3. The hydraulic cylinders 16 and 17 then contract to lower the upper molding box 2 and to lift the lower molding box 3 so that they are stacked. The upper compression members are then actuated while the hydraulic cylinders 16 and 17 extend to lift the upper molding box 2 and to lower the lower molding box 3. Consequently, an upper mold and a lower mold that have been formed in the upper molding box 2 and the lower molding box 3 are removed therefrom, with the lower molding box 3 being suspended from the connecting rods 18. With the molds without upper and lower boxes being produced as in the previous form, the respective sensors measure the hydraulic pressure (which includes a pressure of oil or a pneumatic pressure) of the respective hydraulic cylinders 10, 16 and 17 to drive the corresponding driving parts in the molding machine, or measure the pressure of the compressed air to blow the molding sand into the molding space for filling it with the molding sand (and the compressed air to float or fluidize the molding sand, if required) used by the sand supply device 11 (or measure the upper level of the molding sand within the device 11 of sand supply, if desired). These values measured from the sensors are provided in the monitoring tool 32 by means of the transmitter 31 through the communication link 33. The monitoring tool 32 analyzes the measured values and displays the results of the analysis. The monitoring tool 32 may comprise a computer with a screen to indicate the results of the analysis, and software running on the computer to analyze the values measured from the sensors and to cause the results of the analysis to be displayed. The results of the analysis may include, for example, a determination of whether the measured value is in the predetermined allowable range. If any measured value is outside the predetermined allowable range, a visual sign or an audible signal, or both, can generate warning indications, for example.

In addition, the monitoring tool 32 may also include a printer, etc. to produce the results of the analysis. Because such a monitoring tool 32 can be placed separately from the machine support 1 in which the components of the molding machine are arranged, any operating condition of the molding machine can be monitored remotely. Although this embodiment employs the hydraulic cylinders 16 and 17 (the first hydraulic cylinder system) to cause the upper molding box 2 and the lower molding box 3 to approach each other and retract from each other, the hydraulic cylinders 10 (the second hydraulic cylinder system) for rotating the upper molding box 2, the lower molding box 3 and the correlation plate 5, as the hydraulic cylinder system for driving the driven elements in the molding machine without boxes, the present invention is not limited thereto. If the caseless molding machine further includes an optional hydraulic cylinder system for driving an optional driven part, an optional sensor for measuring the hydraulic pressure of the additional hydraulic cylinder system can be provided so that the value measured from the optional sensor is provide in the monitoring tool 32 by means of the transmitter 31, to through communication link 33, in the above manner. Figures 3 and 4 show the second embodiment of the present invention of the boxless molding machine. This includes an optional cylinder system. The main difference between the first and second embodiments of the molding machine is that the second embodiment employs two pairs of molding boxes, in which each pair comprises an upper molding box 102 and a lower molding box 103, while the first embodiment employs the single mold box unit 27, in which an upper molding box 2 and a lower molding box 3 are connected to each other. Associated with each arrangement, the boxless molding machine of the second embodiment also includes a third hydraulic cylinder 129 for separating the upper molding box 102 from the correlation plate 5, and a fourth hydraulic cylinder 138 for separating an upper mold and a lower mold of the pairs of molding boxes 102, 103. The boxless molding machine of the second embodiment includes a machine support 101, a platform 104, a correlation plate 105, a support shaft 108, a compression mechanism 109, hydraulic cylinders 110 (the second cylinder system), and a sand filling device 111. The platform 4, the correlation plate 5, the support tree 8, the mechanism 9 of compression, the hydraulic cylinders 10 (the second hydraulic cylinder system), and a sand filling device 11, in the first embodiment, are similar to the machine assembly 1, respectively. As described above, on the right side of the machine support 101, two pairs of upper molding boxes 102 and lower molding boxes 130, each molding box defining an opening and having a supply port for sand or ports in its side wall, are arranged. Each pair of molding boxes (upper molding 102 and lower molding 103) are slidably mounted on connecting rods 114. In a pair of the two pairs of molding boxes, the correlation plate 105, of which both faces are provided with a pattern, is placed between the upper molding ca 102 and the lower molding housing 103 so as to be able to inserted therebetween and removed therefrom by the platform 104. The compression mechanism 109 includes a top compression member 106 and a bottom compression member 107. Both members are arranged so that they can be inserted into and removed from the corresponding openings that are located opposite the correlation plate 105 of the upper and lower molding boxes 102 and 103, with the correlation plate 105 being held between the boxes of molding in pairs (the boxes 102 and 103 of upper and lower molding). The compression mechanism 109 supports upper and lower molding boxes 102 and 103 in pairs. The correlation plate 105 is maintained between them in an interleaved relationship so that they are rotated reversibly between a vertical position where they are in their vertical positions, and a horizontal position where they are in their horizontal positions, in the vertical plane on the tree 108 of support, which remains standing in the support 101 of machinery. The reversible rotation movement of the compression mechanism 109 is carried out by operating the hydraulic cylinders 110. The upper and lower molding boxes 102 and 103 in pairs, which have been in their vertical positions by means of the extended movements of the hydraulic cylinders 110, are filled with the molding sand which is blown and injected from the ports of sand filling in the molding boxes, by means of compressed air. The molding sand can also be made to float or fluidize by means of compressed air, in the second mode. In contrast to the boxless molding machine of the first embodiment, the boxless molding machine of the second embodiment further includes a mold separation apparatus 112 and a pivoting mechanism 113 for pivoting the molding boxes.

The mold separation equipment 112 separates the upper and lower molds from a pair of upper and lower mold boxes 102 and 103, which are stacked in their horizontal positions so as to contain the corresponding molds. For this purpose, the mold separation equipment 112 includes an extrusion plate 128 which can be inserted between the upper and lower molding boxes 102 and 103 stacked in their horizontal positions. Extrusion plate 128 is attached to the lower end of a hydraulic cylinder 129 piston rod (the fourth hydraulic cylinder) which is mounted on the machine support 101. Located immediately below the extrusion plate 128 is a receiver 130 for receiving the upper and lower molds, which are separated from the upper and lower molding boxes 102 and 103. The pivot mechanism 113 rotates alternately and intermittently two upper and lower molding boxes 102 and 103 in pairs, in which one pair and the other pair are arranged in a vertical line. Each pair of molding boxes consists of an upper molding box 102 and a lower molding box 103 that are stacked in their horizontal positions. The pivot mechanism 113 can be raised and lowered, while engaging with the upper molding box 102. In the pivot mechanism 113, a tree 127 rotary, vertically extended is mounted horizontally and rotatably in the support 101 of machinery. The upper end of the rotary shaft 127 is attached to a motor drive shaft 134, which is mounted on the upper portion of the machine support 101. Provided with the rotating shaft 127 slightly above the center thereof is a support member 135. Two pairs of extended guide rods 136 are suspended downwardly of the support member 135 with a predetermined interval between a pair of guide rods 136 in the transverse direction of the molding machine. The two pairs of guide rods 136 oppose each other in the longitudinal direction on the rotary shaft 127. An upper engaging member 137 is vertically and slidably attached to each pair of the guide rods 136 for engaging lugs that are formed in the upper molding box 102. Each upper coupling member 137 is attached to the distal end of the piston rod of the hydraulic cylinder 138 (the third hydraulic cylinder system), which is mounted on the rotary shaft 127. Each upper coupling member 137 in this way can move vertically by the extension and contraction movements of the corresponding cylinder 138. The lower ends of the two pairs of guide rods 136 are attached to a lower coupling member 139 which it can be attached to the lugs of the two lower molding boxes 103. The arrangement of the compression mechanism 109 is similar to the compression mechanism 9 of the first embodiment. The compression mechanism 109 includes a rotating frame 118 that is rotatably supported by a support shaft 108, which stands at the center of the upper portion of the machine support 101. The right side of the rotating frame 118 is provided with a pair of vertical, extended guide rods 119 which are placed in a rearward and frontal relationship with each other to form a predetermined distance therebetween. A vertically moving upper frame 120 and a lower vertical moving frame 121 are mounted vertically and slidably on and through the upper portions and the lower portions, respectively of the two guide rods 119. The upper vertically moving frame 120 and the vertically lower moving frame 121 can be brought closer and further apart by the extension and contraction movements of the hydraulic members 122, 123 (the first cylinder system). The arrangement of the sand supply device 111 is also similar to the sand supply device 11 of the first mode. The device 111 of Sand supply is mounted on the upper left portion of the machinery support so that two sources (not shown) of compressed air are provided under the sand supply device 111. The molding machine also includes a plurality of sensors for measuring the variable hydraulic pressures (including an oil pressure or pneumatic pressure) of the hydraulic cylinders 110, 122, 123, 129 and 138 to drive the driven elements in the machine. molding, and for detecting the variable pressures of the compressed air for blowing and filling the molding sand in the molding space (and the compressed air for floating or fluidizing the molding sand, if required) used by the supply device 111 sand. As shown in Figure 3, the sensors are illustrated as lines extending from the transmitter 31 to simplify the figure. Similar to the first mode, the values measured from the sensors are provided to the tool 32 monitoring by means of the transmitter 31, which is electrically connected to the sensors, through the link 33 of communication, in order to analyze the measured values and to display the result of the analysis. The sensors connected to the transmitter 31 may include a sensor for detecting the upper level of the molding sand within the molding boxes 102 and 103 upper and lower. In the boxless molding machine configured as described above, the first correlation plate 105 is carried between the upper molding box 102 and the lower molding box 103 in their horizontal positions by means of the platform 104. The cylinders 122 and 123 are then contracted so that the correlation plate 105 is maintained between the upper molding box 102 and the lower molding housing 103 in an interleaved relationship. The upper compression member 106 and the lower compression member 107 are then driven and inserted into the upper molding case 102 and the lower molding housing 103, respectively, by the predetermined lengths, to define an upper molding space and a lower molding space. The hydraulic cylinders 110 then extend to rotate the compression mechanism 109 so that the upper molding box 102, the lower molding box 103 and the correlation plate 105 are in their vertical positions, with each sand filling port. of each molding box by splicing the respective nozzles, which inject the molding sand of the sand filling device 111. The sand filling device 111 then blows the molding sand to fill the molding spaces upper and lower with the molding sand (while the molding sand is floated or fluidized, if desired). Consequently, the upper compression member 106 and lower compression member 107 are then operated to compress the molding sand into the upper and lower molding spaces. The hydraulic cylinders 110 then contract to change the upper molding case 102, the lower molding case 103, and the correlation plate 105 back to their horizontal positions. The hydraulic cylinders 122 and 123 then extend so that the upper vertically moving frame 120 and the vertically lower moving frame 121 move away from each other. The cylinder 138 then extends to suspend the upper molding box 102, which contains the resulting mold, from the upper coupling member 130, to lift the upper molding box 102 so as to separate from the correlation plate 105. At this time, the lower molding housing 103 travels over the lower coupling member 139 of the pivot mechanism 113. The correlation plate 105 is then removed from between the upper molding box 102 and the lower molding box 103. The motor 134 is then activated to rotate the rotary shaft 127 through the predetermined angle of rotation to pivotally move the box 102 of upper mold and lower mold box 103 to the mold separation equipment 112. The hydraulic cylinder 129 is then driven to drive the mold separation equipment 112 so that the upper mold and the lower mold are separated from the upper mold box and the lower mold box, respectively. When the molds without top and bottom boxes are formed in the above manner, the respective sensor measures the hydraulic pressure (which includes an oil pressure or pneumatic pressure) of each hydraulic cylinder to drive the corresponding drive element in the molding machine, or measures the pressure of the compressed air to blow and fill the molding sand in the molding space (and the compressed air to float or fluidize the molding sand, if required) used by the sand supply device 111 or measures the upper level of the filled molding sand, if desired). In the second embodiment, the cylinder systems that are adapted to be driven by varying hydraulic pressures to drive the driven elements of the molding machine include the hydraulic cylinders 122 and 123 (the first hydraulic cylinder system) to cause the box 102 of upper molding and the lower molding case 103 approach and move away from each other, the hydraulic cylinder 110 (the second system of hydraulic cylinders) for rotating the upper molding box 102, the lower molding box 103, and the correlation box 105, the hydraulic cylinder 129 (the third hydraulic cylinder system) and the fourth hydraulic cylinder 138 for separating the upper and lower molds from upper and lower molding boxes 102 and 103. Similar to the first embodiment, the values measured from the sensors are provided in the monitoring tool 32 via the transmitter 31 through the communication link 33 so that the monitoring tool 32 analyzes the measured values and displays the results of the analysis. The monitoring tool 32 may comprise a computer with a screen to indicate the results of the analysis, software running on the computer to analyze the values measured from the sensors, and to cause the results of the analysis to be displayed. Because the monitoring tool 32 can be placed separately from the machine support 101 in which the machinery components of the molding machine are arranged, any operating condition of the molding machine can be monitored remotely, similar to the first mode. The described modalities are only intended for illustrative purposes. In this way the present inventionIt is not limited to them. For example, if the upper compression members of the first embodiment or the upper compression member 106 and the lower compression member 107 of the second embodiment, are driven by cylinder systems that are adapted to be driven by variable hydraulic pressures. , the cylinder systems can be provided with the corresponding sensors to be able to monitor the states of operation of the same. In addition, each cylinder system may include an arbitrary number of cylinders or a single cylinder. For example, each cylinder system may include clustered cylinders that are comprised of a plurality of cylinders. Alternatively, any cylinder system can include a single cylinder, if it has a sufficient output power.

Claims (10)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and therefore the property described in the following claims is claimed as property.
2. CLAIMS 1. A molding machine without boxes for manufacturing upper and lower molds without boxes, characterized in that it comprises: an upper mold box and a lower mold box, each mold box defines an opening in which the corresponding mold that is manufactured it has at least one sand supply port for supplying the molding sand to the opening, where the upper molding box and the lower molding box are supported so that they can move closer and away from each other; a first cylinder system adapted to be driven by variable hydraulic pressure to generate a driving force to cause the upper and lower mold boxes to move closer and farther away from one another; a correlation plate having upper and lower face, wherein the correlation plate is provided to be inserted and removed from between the upper and lower molding boxes; members of upper and lower compression, each
3. I i member can be inserted into the corresponding molding channel, while each member opposes the corresponding face of the correlation plate when the correlation plate is held between the upper and lower molding boxes in an interleaved relationship, so that the Molding sand that is filled inside the molding boxes is compressed; a second cylinder system adapted to be driven by variable hydraulic pressure to generate a driving force to cause the upper molding box, the lower molding box and the correlation plate held between them to be rotated in unison between a position where the upper and lower molding boxes and the correlation plate are in their vertical positions and a position where the upper and lower molding boxes and the correlation plate are in their horizontal positions; sand supply medium, which has a l, I compressed air source, to blow the molding sand through the sand supply ports of the upper and lower molding boxes by the compressed air so that the upper and lower molding boxes in the vertical positions are filled with the molding sand; measurement means including a plurality of sensors for measuring at least fluid pressures of i ' first and second cylinder systems, and the air pressure of the compressed air that is supplied from the source, respectively, transmission means for transmitting the measured values from the measurement means in a communication link; and means of analysis to receive and analyze the transmitted measured values and to display the results of the analysis. 2. The boxless molding machine according to claim 1, characterized in that the sand supply means also fluidizes the molding sand by compressed air with variable pressure from the source or an optional source while the molding boxes are filled with the molding sand, and where the measuring means also includes a sensor for measuring the air pressure of the compressed air used for the fluidization of the molding sand. 3. The boxless molding machine according to claim 1, characterized in that the means further includes a sensor for detecting the upper level of the molding sand within the sand supply means.
4. 4. The molding machine without boxes according to claim 1, characterized in that the communication link is the Internet or Intranet.
5. 5. The molding machine without boxes according to claim 1, characterized in that each cylinder system includes grouped cylinders that are composed of a plurality of hydraulic cylinders.
6. 6. The molding machine without boxes according to claim 5, characterized in that the hydraulic pressure of each cylinder system is an oil pressure or a pneumatic pressure. The boxless molding machine according to claim 6, further characterized in that it comprises an optional cylinder system adapted to be driven by variable hydraulic pressure to provide a driving force to a driven part of the molding machine without boxes, and where the sensors of the measuring means further include a sensor for measuring the hydraulic pressure of the optional cylinder system. 8. The boxless molding machine according to claim 7, further characterized in that the cylinder system provides driving force to the upper and lower compression members. 9. The molding machine without boxes according to claim 7, characterized in that the molding machine uses two pairs of molding boxes in which an upper molding box and a lower molding box are formed as a pair so that The molding machine is It adapts to alternatively manufacture molds with two pairs of mold boxes. And where the optional cylinder system includes a third cylinder system to generate a driving force to remove the upper molding box that is used to make the upper mold that is contained therein, of the correlation plate, and a fourth Cylinder system to generate a driving force to separate the upper and lower molds from the pair of mold boxes that has been separated from the correlation plate. The boxless molding machine according to claim 7, characterized in that the optional cylinder system includes grouped cylinders comprising a plurality of hydraulic cylinders. I, i I