EP0384870A1 - Kernschiessmaschine - Google Patents

Kernschiessmaschine Download PDF

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Publication number
EP0384870A1
EP0384870A1 EP90440018A EP90440018A EP0384870A1 EP 0384870 A1 EP0384870 A1 EP 0384870A1 EP 90440018 A EP90440018 A EP 90440018A EP 90440018 A EP90440018 A EP 90440018A EP 0384870 A1 EP0384870 A1 EP 0384870A1
Authority
EP
European Patent Office
Prior art keywords
firing
machine
foundry cores
core
cores according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90440018A
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English (en)
French (fr)
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EP0384870B1 (de
Inventor
André Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuhn SAS
Original Assignee
Kuhn SAS
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Filing date
Publication date
Application filed by Kuhn SAS filed Critical Kuhn SAS
Priority to AT90440018T priority Critical patent/ATE89204T1/de
Publication of EP0384870A1 publication Critical patent/EP0384870A1/de
Application granted granted Critical
Publication of EP0384870B1 publication Critical patent/EP0384870B1/de
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02—Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04—Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines
    • B22C19/04—Controlling devices specially designed for moulding machines

Definitions

  • the present invention relates to a machine for drawing foundry cores comprising a means for supporting core boxes provided with support members which can receive core boxes of variable size, a means for firing comprising a firing device as well as adaptation means which allow said firing device to automatically adapt to the size of said core boxes and a gassing means comprising a gassing head and adaptation means which allow the gassing head to adapt automatically to the dimension of said core boxes.
  • this machine can be used to produce cores either in large series or in reduced series.
  • the machine can thus be adapted exactly to the series of cores to be manufactured, which makes it possible to obtain, in each case, the lowest possible costs and production times. Indeed, in the case of mass production, it is possible to equip all the workstations of the machine with identical core boxes. The machine will thus manufacture the same core all the time. In the case of reduced series, it is possible to equip each work station of the machine with a different box. The machine will thus simultaneously manufacture several different cores, but in a smaller quantity. Any intermediate case, situated between these two extreme cases, is of course conceivable. Thus, in the case of medium series, we will only equip a few machine stations with identical boxes. The machine is therefore, as has just been demonstrated, very flexible in use.
  • the machine accepts core boxes of variable size, the purchaser of such a machine can largely use the existing boxes. In this way, the machine is very quickly operational.
  • the present invention aims to make this known machine even more flexible.
  • the machine according to the present invention is characterized in that the firing device comprises several firing heads.
  • the firing heads can be used individually.
  • each firing head comprises an individual metering device and that a firing unit is common to at least part of said firing heads. Thanks to this arrangement, the construction of the machine according to the invention is extremely simple. Moreover, the fact that there is only one firing unit which represents the noble element of the firing head, for at least a part of said firing heads, makes it possible to limit the increased cost of the machine generated by the arrangement of several firing heads.
  • the various metering devices are brought under the common firing unit by displacement in an at least substantially horizontal plane.
  • this displacement is a translation, but could for example also be a rotation about an axis at least substantially vertical.
  • the metering devices corresponding to a common firing unit move together when the operating device brings one of these metering devices under the common firing unit.
  • a single operating device can control the movement of all of the metering devices corresponding to the same firing unit.
  • the metering devices corresponding to the same firing unit move together when the firing head which is operational, is moved towards or away from the core box. This also greatly simplifies the construction of the machine.
  • each metering device extends, in the non-use position, under a corresponding supply of sand.
  • the metering device which must be brought under the firing unit by the operating device, is already in place for filling before being brought under the firing unit. Unnecessary trips and wasted time are avoided.
  • the sand supplies intended to supply the metering devices extend around the common firing unit.
  • the metering devices of the different firing heads comprise outlet nozzles of different shape. In this way, nuclei of very varied size and shape can be drawn successively during the same cycle.
  • the core pulling machine (1) of the invention comprises a support means (2) for core boxes (3; 4; 5; 6).
  • This support means (2) comprises support members which are, in the example shown, formed by a table (7) on the upper face (700) of which the core boxes (3; 4; 5; 6).
  • This table (7) is substantially horizontal and can rotate around an axis of rotation (8) which extends substantially vertically.
  • the machine (1) also comprises a gantry (9) which supports a firing device (10).
  • This shooting device (10) can move at least substantially vertically to be approached and distant from the table (7).
  • the machine (1) also further includes a bracket (11) which supports a gassing head (12). This gassing head (12) can also move at least substantially vertically to be approached and removed from the table (7).
  • the support means (2), the gantry (9), as well as the bracket (11) are linked to a base (13) which makes it possible to seal the machine (1) on the floor of a core shop.
  • the gantry (9) also supports two hoppers (198; 199) in each of which there is a core sand reserve.
  • the hoppers (198; 199) can be fed from the central reserve of the core shop.
  • the base of each hopper (198; 199) is provided with a hatch (200), the opening and closing of which are maneuvered by a corresponding jack (201).
  • the firing device (10) firstly comprises a firing unit (202) as well as two metering devices (203; 204) which can each be brought under the firing unit (202). Each assembly (203-202; 204-202) thus forms a firing head, so that the machine shown has two firing heads.
  • the firing unit (202), as well as the metering devices (203; 204) are known (FOMES brand for example) and are therefore within the reach of ordinary skill in the art, so that they will not be described in detail.
  • the only special feature of the metering devices (203; 204) is that they each have a removable outlet nozzle (205; 206). In this way, it is possible to mount on each metering device (203; 204) outlet nozzles (205; 206) having an outlet orifice (207; 208) of different shape.
  • outlet nozzle (205) equipping the metering device (203) has an outlet orifice (207) having a cross shape
  • outlet nozzle (206) equipping the dispensing device metering (204) has an outlet (208) having a substantially circular shape.
  • the two metering devices (203; 204) are mounted on two slides (209) extending under the firing unit (202) in a plane at least substantially horizontal and parallel to each other.
  • the two metering devices (203; 204) are additionally linked to each other by means of a connecting member (210) so that they move together along said slides (209).
  • the translation of the metering devices (203; 204) along the slides (209) is achieved by an actuating cylinder (211) which is connected on the one hand to one (204) of said metering devices (203; 204 ) And on the other hand to a carriage (32) which supports the firing device (10) and which will be described in detail below.
  • said carriage (32) is provided with a console (212) on which is fixed the cylinder of the actuating cylinder (211).
  • the actuating cylinder (211) has translated the metering devices (203; 204) so that it is the metering device (203) which extends in its operational position under the unit of shot (202) and that the metering device (204) extends under the corresponding hopper (199).
  • the gassing head (12) is shown in more detail in Figures 3, 4 and 5.
  • This gassing head (12) consists of a plate (20), which has on its underside (21 ) a cavity (22).
  • a counter plate (24) is fixed on the outer edge (23) of the lower face (21) of the plate (20), which delimits the cavity (22), a counter plate (24) is fixed.
  • This counter plate (24) is provided with a number of holes (25) which pass through the counter plate (24) right through and which open into the cavity (22).
  • the counter plate (24) also has on its lower face (26) a seal (27).
  • This seal (27) has holes (25 ′) which correspond to the holes (25) of the counterplate (24) and which pass through the seal (27) right through.
  • a threaded hole (28) which passes through the plate (20) right through and which opens into the cavity (22).
  • the threaded hole (28) is screwed the end piece (29) of a gas supply pipe (30) which is thus fixed on the upper face (31) of the plate (20).
  • the firing device (10) can be approached from the table (7) by automatically adapting to the size of the core boxes (3; 4; 5; 6). To this end, the firing device (10) is mounted on the carriage (32).
  • the carriage (32) appears in detail in Figures 1, 2 and 6. It consists of two beams (33; 34) which are connected to each other at their upper part by two crosspieces (35; 36). Each beam (33; 34) is provided at each of its ends with a roller (37; 38). The axes of rotation (39; 40) of these rollers (37; 38) extend substantially horizontally and are contained in a plane substantially parallel to the plane (41) of the carriage (32).
  • Each beam (33; 34) is provided with two other rollers (42; 43; 44; 45) which extend, as visible in FIG. 6, between the rollers (37; 38).
  • the axes of rotation (46; 47; 48; 49) of the rollers (42; 43; 44; 45) also extend substantially horizontally, but are substantially perpendicular to the plane (41) of the carriage (32).
  • the two beams (50; 51) are linked together by a cross-member (52).
  • the two beams (50; 51) and the crosspiece (52) are used to fix the firing unit (202) on the carriage (32), so that the axis (53) of 1 firing unit (202) extends at least substantially vertically.
  • the two beams (33; 34) of the carriage (32) are also provided with a frame (213) comprising in particular two beams (54; 55) which extend substantially parallel to the beams (50; 51).
  • These two beams (54; 55) support the two slides (209) of the metering devices (203; 204) of the firing device (10), which slides (209) extend substantially parallel to the plane (41) of the carriage (32).
  • the carriage (32) which has just been described, is guided in translation in the gantry (9) thanks to the rollers (37; 38) and the rollers (42; 43; 44; 45).
  • the gantry (9) has two substantially vertical uprights (56; 57) which are linked together at their upper end by a crosspiece (58).
  • the gantry (9) thus formed is fixed on the base (13).
  • the two uprights (56; 57) of the gantry (9) are constituted by U-shaped profiles, the open part of which is directed towards the interior of the gantry (9). These two U-shaped uprights (56; 57) serve as a guide track for the rollers (37; 38) when the carriage (32) is moved in the gantry (9).
  • the rollers (42; 43; 44; 45) meanwhile roll on the rear wing (59) of the U-shaped uprights (56; 57) and serve to guide the carriage laterally (32).
  • the guide tracks of the rollers (37; 38) and (42; 43; 44; 45) can advantageously be equipped with a piece of hardened steel to prevent wear.
  • the uprights (56; 57) of the gantry (9) also have holes (60) blocked by removable covers (61). These holes (60) allow the assembly and disassembly of the rollers (37; 38) and therefore the assembly and disassembly of the carriage (32) of the gantry (9).
  • a jack (62) which is advantageously a hydraulic jack.
  • This jack (62) extends substantially in the plane (41) of the carriage (32) and is fixed on the one hand to the base (13) by means of a yoke (63) and on the other hand to the lower cross member ( 36) of the carriage (32) by means of another yoke (64).
  • This jack (62) is carried out by a hydraulic circuit (620) which is shown in FIG. 7.
  • This circuit is supplied by a pump (65) driven by a motor (66).
  • the pressure of the oil delivered by the pump (65) is limited by a pressure relief valve (67).
  • the circuit then comprises a distributor (68) with its four terminals (69; 70; 71; 72), its drawer with three compartments (73; 74; 75) and its two pushers (76; 77).
  • the terminal (72) of the distributor (68) is linked to the chamber (78) of the jack (62) on the rod side of the jack by a pipe (79) comprising a piloted non-return valve (80) and a pressure switch (81).
  • the terminal (71) of the distributor (68) is in turn linked to the other chamber (82) of the jack (62) by a line (83) comprising a piloted non-return valve (84) and a flow regulator ( 85).
  • the circuit which has just been described operates in the following manner.
  • the pusher (76) of the distributor (68) is excited, which brings the compartment (73) at the terminals (69; 70; 71; 72 ).
  • the oil supplied by the pump (65) then enters via the terminal (69), exits through the terminal (72), passes through the valve (80) and enters the chamber (78) on the rod side of the jack (62).
  • the oil contained in the chamber (82) is discharged when the pressure of the line (79) has opened the piloted valve (84).
  • This oil discharged from the chamber (82) of the jack (62) passes through the flow regulator (85) which regulates the speed of retraction of the jack rod (62), that is to say the speed of descent of the carriage (32) and the firing device (10).
  • the firing head (203-202; 204-202) comes into contact with the upper face (300; 400; 500; 600) of the core box (3; 4; 5; 6) to be fired, its descent is stopped as well as the retraction of the cylinder rod (62) in the cylinder of said cylinder (62).
  • the line (79) continues to be supplied, the oil contained in it increases in pressure until it reaches the setting pressure of the pressure switch (81).
  • the pressure switch (81) de-energizes the pusher (76), which has the effect of bringing the compartment (74) back to the terminals (69; 70; 71; 72).
  • the oil contained in the chambers (78; 82) of the jack (62) can no longer circulate because it is blocked by the valves (80 and 84) and the jack (62), that is to say the carriage (32) and the firing device (10) are locked.
  • the firing device (10) After firing the core, the firing device (10) must be raised, that is to say that the rod of the jack (62) must come out of the cylinder. To do this, the pusher (77) is excited, which has the effect of bringing the compartment (75) to the level of the terminals (69; 70; 71; 72).
  • the oil supplied by the pump (65) enters through the terminal (69), exits through the terminal (71), passes through the valve (84) and through the non-return valve (87) which short-circuits in this direction the flow regulator (85) to enter the chamber (82) of the jack (62), as soon as the pressure in the line (83) has piloted the opening of the valve (80) of the line (79) so that the oil contained in the chamber (78) of the jack (62) can return to the reservoir (86).
  • the firing device (10) can automatically adapt to core boxes (3; 4; 5; 6) of very different dimensions, since it is the core box itself which triggers the stopping of the descent of the firing device (10). It is also the core box which automatically locks the firing device (10) during the firing of the core. This is very important because it allows the machine to absorb the shock generated when firing the core.
  • the gassing head (12) can also be approached from the table (7) by automatically adapting to the size of the core boxes (3; 4; 5; 6). To this end, the gassing head (12) is fixed to the free end of the rod (88) of a jack (89) which is advantageously a pneumatic jack. The cylinder (90) of the jack (89) is fixed to the bracket (11). The connection between the free end of the rod (88) of the jack (89) and the gassing head (12) appears in more detail in FIGS. 3, 4 and 5.
  • the second part (98) of the screw rod (95) is threaded so that the screws (95) can be screwed into threaded holes (100) arranged in the upper face (31) of the plate (20), up to 'so that the shoulder (99) abuts on the upper face (31) of the plate (20).
  • the head (96) of the screws (95) is thus at a certain distance from the upper face (31) of the plate (20).
  • the diameter of the holes (94) of the flange (92) of the flange (91) is somewhat larger than the diameter of the first part (97) of the screws (95).
  • the thickness of the flange (92) is less than the distance which separates the lower face of the heads (96) from the screws (95) and the upper face (31) of the plate (20).
  • the plate (20) is provided with a guide (104) fixed on the plate (20) and which passes through a guide hole made in the stem (11).
  • the longitudinal axis of the guide (104) is substantially parallel to the longitudinal axis of the rod (88) of the jack (89), that is to say substantially vertical.
  • the gassing head (12) and its adaptation means which allow the gassing head (12) to automatically adapt to the size of the core boxes (3; 4; 5; 6) operate in the following manner.
  • a core box (3; 4; 5; 6) is in the gassing position (the core box (6) for example in FIGS. 1 and 2), the jack (89) is supplied, which causes the lowering of the gassing head (12) towards the core box.
  • the seal (27) comes into contact with the upper face (300; 400; 500; 600) of the core box, the descent of the plate (20) stops.
  • the cylinder (89) on the other hand continues to push on the flange (91) until the lower face (103) of the flange (92) of the flange (91) comes into contact with the upper face (31) of the plate (20).
  • the thrust of the jack (89) on the upper face (31) of the plate (20) then compresses the seal (27) between the lower face (26) of the counter plate (24) and the upper face (300; 400 ; 500; 600) of the core box to prevent gas leakage.
  • the seal (27) is correctly compressed, the descent of the rod (88) of the jack (89) stops and the pressure is maintained in the jack (89) so that the seal (27) remains properly compressed throughout the gassing operation. This gassing operation only begins when the gassing head (12) is in place.
  • this detector (101) detects the upper face (31) of the plate (20) when the lower face (103) of the flange (92) of the flange (91) comes substantially close to the upper face (31) of the plate (20) (position shown in Figure 5 which shows the gassing position). Given the possible relative movement between the flange (92) of the flange (91) and the plate (20), this is effectively achieved only when the gassing head (12) is in contact with the upper face (300; 400; 500; 600) of the core box. During the approach phase, on the other hand, the detection of the upper face (31) of the plate (20) cannot take place since the upper face (31) of the plate (20) is too far from the lower face (102 ) of the detector (101) (position shown in Figure 3).
  • the gas is brought through the supply line (30) into the cavity (22) from where it is then distributed through the holes (25) of the counterplate (24) and the holes (25 ′) Of the seal (27) in the gas core box.
  • the gassing head (12) is raised after the gassing operation, the duration of which is programmed as a function of the size of the core. This programming is done on a computer (197) which will be discussed later.
  • the gassing head (12) as previously the firing device (10), can automatically adapt to core boxes (3; 4; 5; 6) of very large size. different since it is the core box itself which triggers the stop of the descent of the gassing head (12) and the triggering of the gassing operation.
  • the support means (2) is shown in Figures 1, 2, 8, 9, 10 and 11, and comprises as said above a table (7).
  • This table (7) is preferably circular and as said above extends substantially in a horizontal plane and can rotate around a substantially vertical axis (8).
  • the table (7) has for this purpose substantially at its center, a pivot (105) which extends downwards and whose longitudinal axis coincides with the axis of rotation (8).
  • the pivot (105) engages in a bearing (106) which is fixed on the base (13).
  • the pivot (105) in the bearing (106) is guided in rotation by means of a bearing (107) which extends to the upper part (108) of the bearing (106), and to the using a rolling stop (109) extending to the lower part (110) of said bearing (106).
  • the rolling stop (109) also maintains the pivot (105) axially downward.
  • the bearing (106) does not extend to the lower face (111) of the table (7), so that between the upper part (108) of the bearing (106) and the lower face (111) of the table (7), the pivot (105) can rotationally support a lever (112).
  • the lever (112) is guided on the pivot (105) by two bearings (113; 114) housed in a hub (115) which includes the lever (112). A certain distance is maintained between the lever (112) and the bearing (106) by a spacer (116).
  • the lever (112) has two arms (117; 118), one of which (117) extends on one side of the hub (115) and the other (118) of which extends on the other side of said hub (115).
  • the arm (117) of the lever (112) is linked to the rod (120) of a jack (121) by means of an axis (122).
  • the cylinder (123) of the jack (121) is in turn linked in an articulated manner using a pin (124) to an upright (125) integral with the base (13).
  • the arm (118) supports on its free end (126) a jack (127) whose cylinder (128) is fixed on the arm (118).
  • the free end of the rod (129) of the jack (127) is integral with a V-shaped part (130) whose V is open towards the outside.
  • the V-shaped part (130) collaborates with an index (131) secured to the table (7).
  • This index (131) is constituted by a cylindrical stud which, when it collaborates with the V-shaped part (130), extends between the wings of said V.
  • the table (7) has four indexes (131).
  • the number of indexes (131) that the table (7) comprises corresponds to the number of core boxes (3; 4; 5; 6) intended to be supported simultaneously by the table (7).
  • the table (7) can simultaneously support four core boxes.
  • the disassembly the extraction of the drawn and gassed cores and the reassembly of the core boxes are carried out.
  • (133) corresponds to an intermediate position.
  • the core is fired and in (135) the core is gassed.
  • Another cylinder (136) is also provided to collaborate with an index (131) of the table (7).
  • the cylinder (137) of this jack (136) is fixed on an upright (138) integral with the base (13).
  • the free end of the rod (139) of said cylinder (136) also includes a V-shaped part (140) similar to the V-shaped part (130) of the cylinder (127).
  • the jack (127) collaborates with an index (131) to rotate the table (7) around the axis of rotation (8) while the jack (136) collaborates with an index (131) during work to block the rotation of the table (7).
  • the drive cylinder (127) is actuated so that the V-shaped drive piece (130) is brought together with an index (131) of the table (7).
  • the blocking cylinder (136) which is actuated to separate the V-shaped blocking part (140) from the index (131) with which it collaborated.
  • the actuator (121) which is actuated so as to bring out its rod (120). In doing so, the rod (120) pushes on the arm (117) of the lever (112) causing the rotation of the latter around the axis (8).
  • FIGS. 9, 10 and 11 it can be seen that the table (7) still rests on supports (141) at least one of which extends in the zone (134) of the firing device (10) substantially in the axis (53) of the firing unit (202).
  • This support (141) allows the table (7) to absorb the shock generated during the firing of the core. (In Figure 1, the supports (141) have not been shown so as not to clutter the figure).
  • the supports (141) are three in number and are located equidistant from each other. They consist of rollers (142) which are fixed to the upper part of uprights (143) integral with the base (13), as shown in FIGS. 10 and 11.
  • the rollers (142) rotate around axes ( 144) substantially horizontal and substantially cutting the axis of rotation (8) of the table (7).
  • the uprights (143) are formed by U-shaped profiles.
  • Each upright (143) is provided at its upper part with a roller-bearing arm (145) which extends between the two wings (146; 147) of the U-shaped profile.
  • the roller support arm (145) rotatably supports the roller (142).
  • the roller support arm (145) is provided with an oblong hole (148) which is crossed by a bolt (149). This bolt (149) also also passes through a hole (150) in the core (151) of the upright (143). At its lower end, the roller arm (145) is in contact with a screw adjustment (152) which is screwed into a nut (153) integral with the upright (143).
  • each roller (142) can be adjusted relative to the table (7).
  • loosen the bolt (149) then push on the lower end of the roller support arm (145) by means of the adjustment screw (152) , which will cause the roller arm (145) to slide in the upright (143).
  • This sliding is possible, since the hole (148) provided in the roller support arm (145) and which is crossed by the bolt (149) is an oblong hole.
  • FIG. 12 and 13 show an embodiment of holding means (154) of the core boxes (3; 4; 5; 6). These holding means (154) hold the core boxes during work. Since they are identical, we will only describe one of them. (In FIG. 12, for the sake of clarity of the figure, only the holding devices (154) of the stations (181 and 183) are shown).
  • the holding means (154) comprises a jaw holder (155) which is provided with two jaws (156; 157).
  • Each jaw holder (155) comprises a bearing (158) integral with two wings (159; 160) so that, when viewed from above, the two wings (159; 160) form a U open towards the outside.
  • the bearing (158) is open so as to form a clamp (161) which can be tightened by a bolt (162).
  • the bearing (158) of the jaw holder (155) is slid over a peg (163) fixed on the upper face of the table (7).
  • the jaw holder (155) also comprises above the bearing (158) an actuating cylinder (164) which is fixed on top of the bearing (158) of the jaw holder (155).
  • the operating cylinder (164) is closed at its upper part (165).
  • This closed upper part (165) is crossed by an operating screw (166) which is screwed into a threaded hole (167) arranged in the longitudinal axis of the stud (163).
  • the operating screw (166) is linked in translation to the operating cylinder (164) and on its part which protrudes from the operating cylinder (164), an operating handwheel (168) is fixed.
  • the device which has just been described makes it possible to adjust the position of the jaw holder (155) and consequently of the jaws (156; 157) relative to the dimension of the core box which they must maintain. To do this, simply loosen the bolt (162) to open the clamp (161), then turn the operating screw (166) using the handwheel (168) to enter or exit the operating screw (166) of the piton (163). When the jaws (156; 157) have reached the correct position relative to the core box, it will suffice to tighten the clamp (161) by blocking the bolt (162).
  • One (169) of the slides has a number of holes (174), into which two pins (175) can be threaded on either side of one (156) of the jaws and which will be used to link in translation one (156) of the jaws to one (169) of the slides.
  • the core box intended for this holding means (154) will always be substantially in the same place on the table (7), that is to say advantageously centered relative to the firing head (203 - 202; 204 - 202) and at the gassing head (12).
  • the jaws (156; 157) are closed by operating the jack (171) so as to bring its rod (173) into its cylinder (172). This will move the jaw (157) which can slide freely on the slides (169; 170) until it comes into contact with the core box to be maintained. Maintaining the core box is achieved by maintaining, for example, the pressure in the cylinder (171).
  • the jaw (157) comprises a swiveling clamping plate (176).
  • the jaw (157) comprises a yoke (177) fixed on its connecting part (178) to the slides (169; 170).
  • the clamping plate (176) is linked the clamping plate (176) by means of a ball joint (179).
  • the swiveling clamping plate (176) can well be positioned relative to the core box if the latter does not have parallel faces. This guarantees optimal maintenance of the core box.
  • each station (180; 181; 182; 183) is provided with an index (184; 185; 186; 187) which is fixed on the table (7).
  • These indexes (184; 185; 186; 187) are arranged on circles (188; 189; 190; 191) of different radius and are centered on the axis of rotation (8) of the table (7).
  • These indexes (184; 185; 186; 187) pass during the rotation of the table (7) which is always done in the same direction (192), above sensors (193; 194; 195; 196) which are fixed on the base (13) and which therefore do not rotate with the table (7).
  • Each sensor (193; 194; 195; 196) is located at a distance from the axis of rotation (8) of the table (7) equal to the radius of the circle (188; 189; 190; 191) on which the corresponding index (184; 185; 186; 187).
  • the computer (197) controls the jack (211) which brings, under the firing unit (202), the metering device (203; 204) intended to supply said core box (3; 4; 5; 6) and which will have been previously supplied with sand by the hopper (198; 199) corresponding.
  • the nozzles (205; 206) of the metering devices (203; 204) have outlet orifices (207; 208) of different shape. It will however be understood that in the invention, these outlet orifices (207; 208) can be of the same shape.
  • the hoppers (198; 199) may contain different sands.
  • each firing head has its own firing unit.
  • the machine is equipped to support a number of core boxes other than four.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Chutes (AREA)
  • Feeding Of Workpieces (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Magnetic Heads (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Mold Materials And Core Materials (AREA)
EP90440018A 1989-02-24 1990-02-23 Kernschiessmaschine Expired - Lifetime EP0384870B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90440018T ATE89204T1 (de) 1989-02-24 1990-02-23 Kernschiessmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902633A FR2643579B1 (fr) 1989-02-24 1989-02-24 Machine a tirer des noyaux de fonderie
FR8902633 1989-02-24

Publications (2)

Publication Number Publication Date
EP0384870A1 true EP0384870A1 (de) 1990-08-29
EP0384870B1 EP0384870B1 (de) 1993-05-12

Family

ID=9379237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90440018A Expired - Lifetime EP0384870B1 (de) 1989-02-24 1990-02-23 Kernschiessmaschine

Country Status (7)

Country Link
US (1) US5014766A (de)
EP (1) EP0384870B1 (de)
JP (1) JPH02247043A (de)
AT (1) ATE89204T1 (de)
DE (1) DE69001566T2 (de)
ES (1) ES2041167T3 (de)
FR (1) FR2643579B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439111A (zh) * 2014-12-19 2015-03-25 济南万兴农用机械科技有限公司 立式双工位射芯机
CN105478684A (zh) * 2016-01-07 2016-04-13 济南标美精密机械有限公司 全自动射芯机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4033887C2 (de) * 1990-10-25 1994-07-28 Hottinger Adolf Masch Vorrichtung und Verfahren zur Herstellung von Formteilen für Gießereizwecke
WO1995015231A1 (de) * 1993-12-03 1995-06-08 Adolf Hottinger Maschinenbau Gmbh Vorrichtung und verfahren zur herstellung giessfertiger masken bzw. kernpakete
WO1997046342A1 (de) * 1996-05-30 1997-12-11 Adolf Hottinger Maschinenbau Gmbh Verfahren zur fertigung giessfertiger masken oder kernpakete
US6422296B1 (en) * 1996-11-04 2002-07-23 Hottinger Maschinenbau Gmbh Apparatus for making ready-to-pour shells or core assemblies
DE19823134C1 (de) * 1998-05-23 1999-12-02 Joachim Laempe Verfahren und Vorrichtung zur Herstellung von Formteilen für Gießereizwecke aus Sand
CN105414492B (zh) * 2016-01-07 2017-11-03 苏州明志科技有限公司 一种双工位热芯机
EP3272441B1 (de) * 2016-07-19 2020-10-21 Loramendi, S.COOP. Sandkernherstellungsmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3148461C1 (de) * 1981-12-08 1983-04-14 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Kern- und Maskenschießmaschine
CH647433A5 (en) * 1979-04-13 1985-01-31 Vnii Litejnogo Mash Apparatus for the production of casting moulds and mould cores from flowable mould materials
EP0238428A1 (de) * 1986-02-19 1987-09-23 Kuhn S.A. Giesskernblasmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059294A (en) * 1959-05-04 1962-10-23 Gen Motors Corp Apparatus for making foundry cores and molds
US3620293A (en) * 1969-04-07 1971-11-16 Ernst Otto Kruse Press molding machine with adjustable feed device
US4079776A (en) * 1976-04-23 1978-03-21 Acme-Cleveland Corporation Mold making machine
US4190097A (en) * 1977-11-23 1980-02-26 Grede Foundries Inc. Apparatus for making foundry cores

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH647433A5 (en) * 1979-04-13 1985-01-31 Vnii Litejnogo Mash Apparatus for the production of casting moulds and mould cores from flowable mould materials
DE3148461C1 (de) * 1981-12-08 1983-04-14 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Kern- und Maskenschießmaschine
EP0238428A1 (de) * 1986-02-19 1987-09-23 Kuhn S.A. Giesskernblasmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439111A (zh) * 2014-12-19 2015-03-25 济南万兴农用机械科技有限公司 立式双工位射芯机
CN105478684A (zh) * 2016-01-07 2016-04-13 济南标美精密机械有限公司 全自动射芯机

Also Published As

Publication number Publication date
ES2041167T3 (es) 1993-11-01
DE69001566D1 (de) 1993-06-17
FR2643579A1 (fr) 1990-08-31
FR2643579B1 (fr) 1993-12-31
DE69001566T2 (de) 1993-12-02
US5014766A (en) 1991-05-14
EP0384870B1 (de) 1993-05-12
ATE89204T1 (de) 1993-05-15
JPH02247043A (ja) 1990-10-02

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