EP0238428A1 - Giesskernblasmaschine - Google Patents

Giesskernblasmaschine Download PDF

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Publication number
EP0238428A1
EP0238428A1 EP87440010A EP87440010A EP0238428A1 EP 0238428 A1 EP0238428 A1 EP 0238428A1 EP 87440010 A EP87440010 A EP 87440010A EP 87440010 A EP87440010 A EP 87440010A EP 0238428 A1 EP0238428 A1 EP 0238428A1
Authority
EP
European Patent Office
Prior art keywords
machine according
core
head
core box
gassing
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
EP87440010A
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English (en)
French (fr)
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EP0238428B1 (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 AT87440010T priority Critical patent/ATE44665T1/de
Publication of EP0238428A1 publication Critical patent/EP0238428A1/de
Application granted granted Critical
Publication of EP0238428B1 publication Critical patent/EP0238428B1/de
Expired legal-status Critical Current

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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 pulling machine! foundry cores comprising a device for supporting core boxes, a firing head and a gassing head.
  • some machines only accept core boxes of a well-defined size, so that when renewing the machine fleet, it may happen that the existing core boxes can no longer be used on new machines.
  • the object of the present invention is to create a machine for drawing foundry cores which does not have the drawbacks of machines of the prior art, - that is to say which can accept core boxes of very large dimensions. different, so that this machine is very versatile and allows to make the production of cores extremely flexible.
  • the machine for drawing cores according to the invention fully meets the set goal.
  • the machine according to the invention 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, only a few machine stations will be fitted with identical boxes. The machine according to the invention is therefore, as has just been demonstrated, very flexible in use.
  • the machine according to the invention accepts boxes with a core of variable size, the buyer of a machine according to the invention can largely use the existing boxes. In this way, the machine is very quickly operational. This characteristic also makes it possible to largely resolve the problems described above which arise during peak periods.
  • the - means for adapting the firing head making it possible to automatically adapt the firing head to the different core boxes comprise means for moving the firing head, means for detection of the size of the core boxes and means for stopping the movement of the firing head towards the core box.
  • the sequence of adaptation of the firing head to the size of the core box is thus carried out as follows.
  • the means for moving the firing head which comprise means for guiding the firing head and motor means moving the firing head along the guide means, cause the movement of the firing head in the direction of the box. core.
  • the detection means detect the dimension of said core box and control the stop means which themselves act on the displacement means to stop the movement of the firing head, when the latter occupies the desired firing position.
  • the detection means and / or the means for stopping the movement of the firing head towards the core box can advantageously be constituted by the upper face of the core box which thus serves as a stop for the firing head during its movement towards the core box. It should be noted that the detection means and the stop means can act simultaneously.
  • the means for adapting the firing head also comprise means for locking the firing head in the firing position. This allows a good collection of shocks when firing the core.
  • these means for locking the firing head are actuated by the means for stopping the firing head.
  • the machine according to the invention may also include unlocking means which automatically unlock the locking means of the firing head after the firing of the core.
  • the means for adapting the gassing head making it possible to automatically adapt the gassing head to the various core boxes also include means for moving the gassing head, means for detection of the size of the core box and means for stopping the movement of the gassing head.
  • the adaptation sequence of the gassing head is carried out in a similar way to that of the firing head.
  • the means for moving the gassing head which include means for guiding the gassing head and motor means moving the gassing head along the guide means, cause the movement of the gassing head towards the core box.
  • the detection means detect the size of the core box and control the stop means which themselves act on the displacement means to stop the movement of the gassing head, when the latter occupies the desired gassing position.
  • the detection means and / or the means for stopping the movement of the gassing head towards the core box can advantageously be constituted by the upper face of the core box which thus serves as a stop for the head of gassing when moving to the core box. It should be noted that the detection means and the stop means can act simultaneously.
  • the means for supporting the core boxes comprise means for holding the core boxes, suitable for holding core boxes of variable size.
  • these holding means can comprise automatic tightening and loosening means of the core boxes to be maintained.
  • the machine includes a calculator which makes it possible to program the number of shots, as well as the duration of the gassing that each core box requires.
  • This computer is coupled to identification means, capable of identifying each core box.
  • the core pulling machine (1) of the invention comprises a support device (2) for core boxes (3; 4; 5; 6).
  • This support device (2) comprises support means which are, in the example described, 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 head (10). This firing head (10) can move substantially vertically to be approached and removed 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 substantially vertically to be approached and removed from the table (7).
  • the support device (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 a hopper (14) in which there is a reserve of core sand, which can be supplied by the central reserve of the core shop.
  • the base of this hopper (14) is provided with a hatch (15), the opening and closing of which are maneuvered by a jack (16).
  • the firing head (10) includes a metering device (17) which can be brought under the hatch (15) of the hopper (14), to be filled with core sand.
  • the metering device (17) which is produced in the form of a small container, is mounted on slides (18) extending horizontally. The displacement of the metering device (17) along the slides (18) is carried out by a jack (19). (In Figure 1, there is shown partially in broken lines (17 ') the metering device (17) when it is under the hopper (14) to be filled with core sand).
  • the firing head (10) with its metering device (17) is known (for example the FOMES brand firing head) and is therefore within the reach of those skilled in the art, so that it does not will not be described in detail.
  • the gassing head (12) is shown in more detail in Figures 3, 4 and 5.
  • This head gassing (12) consists of a plate (20), which has at its lower face (21) a cavity (22). 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 (250) which correspond to the holes (25) of the counter plate (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 head (10) can be approached from the table (7) by automatically adapting to the size of the core boxes (3; 4; 5; 6). This is one of the important characteristics of the machine for drawing cores (1) according to the invention.
  • the firing head (10) and its metering device (17) are mounted on a carriage (32).
  • the carriage (32) appears in detail in Figures 1, 2 and 6. It consists of two beams (33; 34) which are interconnected 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 interconnected by a crosspiece (52).
  • the two beams (50; 51) and the crosspiece (52) serve to fix the firing head (10) on the carriage (32), so that the axis (53) of the firing head (10) s 'extends substantially vertically.
  • the two beams (33; 34) of the carriage (32) are also provided with two beams (54; 55) which extend substantially parallel to the beams (50; 51). These two beams (54; 55) support the two slides (18) of the metering device (17) of the firing head (10), which 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) comprises two substantially vertical uprights (56; 57) which are connected to each other 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 covers : removable (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 supplied by the pump (65) is limited by a pressure limiter (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 connected 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 connected 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) to the terminals (69; 70; 71; 72 ).
  • the oil supplied by the pump (65) then enters through the terminal (69), exits through the terminal (72), crosses 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 cylinder rod (62), that is to say the speed of descent of the carriage (32) and of the firing head (10).
  • 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 head (10) are locked.
  • 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 head (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 head (10). It is also the core box which automatically locks the firing head (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.
  • this circuit also allows automatic unlocking of the firing head (10) before the ascent of said firing head (10).
  • the gassing head (12) can also be approached from the table (7) by automatically adapting to the size of the boxes. with core (3; 4; 5; 6).
  • 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 Figures 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 adapting 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 in the jack (89) so that the seal (27) remains properly compressed during the entire 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.
  • 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 (250 ) of the gasket (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 which will be discussed later.
  • the gassing head (12) as previously the firing head (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.
  • Another important characteristic of the core pulling machine (1) according to the invention relates to the
  • This support device (2) for core boxes (3; 4; 5; 6).
  • This support device (2) is shown in Figures 1, 2, 8, 9, 10 and 11, and includes, 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 keeps the pivot (105) axially down.
  • 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).
  • 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 to 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 core boxes are dismantled and reassembled.
  • (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 release 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) of which at least one extends in the zone (134) of the firing head (10) substantially in the axis (53) of said firing head (10).
  • This support (141) located under the firing head (10) 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 are made up of rollers (142) which are fixed to the upper part of uprights (143) integral with the base (13), as shown in Figures 10 and ll.
  • the rollers (142) rotate around substantially horizontal axes (144) and substantially intersecting 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 support arm (145) is in contact with an adjustment screw (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.
  • Figures 12 and 13 show an exemplary embodiment of means of maintenance (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 devices for maintenance (154) of positions (181 and 183J).
  • 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 projects 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 (10 ) and 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 obtained by maintaining, for example, the pressure in the jack (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 ( 1 9 3 ; 194 ; 19 5; 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 turns his corresponding index (184; 185; 186; 187).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
  • Automatic Assembly (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Mold Materials And Core Materials (AREA)
  • Multi-Process Working Machines And Systems (AREA)
EP87440010A 1986-02-19 1987-02-18 Giesskernblasmaschine Expired EP0238428B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87440010T ATE44665T1 (de) 1986-02-19 1987-02-18 Giesskernblasmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8602363 1986-02-19
FR8602363A FR2594363B1 (fr) 1986-02-19 1986-02-19 Machine a trier des noyaux de fonderie

Publications (2)

Publication Number Publication Date
EP0238428A1 true EP0238428A1 (de) 1987-09-23
EP0238428B1 EP0238428B1 (de) 1989-07-19

Family

ID=9332361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87440010A Expired EP0238428B1 (de) 1986-02-19 1987-02-18 Giesskernblasmaschine

Country Status (7)

Country Link
US (1) US4742862A (de)
EP (1) EP0238428B1 (de)
JP (1) JPS62192228A (de)
AT (1) ATE44665T1 (de)
DE (1) DE3760322D1 (de)
ES (1) ES2010217B3 (de)
FR (1) FR2594363B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384870A1 (de) * 1989-02-24 1990-08-29 Kuhn S.A. Kernschiessmaschine
CN115635049A (zh) * 2022-04-14 2023-01-24 中国第一汽车股份有限公司 一种可用于动力输入的翻转式壳型机模具回转轴

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253808A (en) * 1979-06-05 1981-03-03 Hunt Valve Co., Inc. Hydraulic pumps
DE4128952C1 (de) * 1991-08-30 1992-07-09 Adolf Hottinger Maschinenbau Gmbh, 6800 Mannheim, De
JP2002039088A (ja) * 2000-07-26 2002-02-06 Seiko Instruments Inc 回転体装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112402A (fr) * 1954-09-14 1956-03-14 Rubery Perfectionnements aux machines à mouler
US3059294A (en) * 1959-05-04 1962-10-23 Gen Motors Corp Apparatus for making foundry cores and molds
FR1383990A (fr) * 1963-11-18 1965-01-04 Voisin Ets A Machine à mouler les noyaux en sable durci en boîtes
DE1920920A1 (de) * 1969-04-24 1970-11-05 Niemeyer Soehne Stahl Pflug Maschine zum Herstellen von Giessereiformen aus Formsand
US4190097A (en) * 1977-11-23 1980-02-26 Grede Foundries Inc. Apparatus for making foundry cores
EP0123756A1 (de) * 1983-04-27 1984-11-07 Naniwa Products Co, Ltd Vollautomatische "cold box" Maschine für das Formen eines integrierten Verbundkernes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129878C2 (de) * 1981-07-29 1985-01-31 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Verfahren zur Herstellung von Alpha-Calciumsulfathalbhydrat aus Entschwefelungsschlamm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112402A (fr) * 1954-09-14 1956-03-14 Rubery Perfectionnements aux machines à mouler
US3059294A (en) * 1959-05-04 1962-10-23 Gen Motors Corp Apparatus for making foundry cores and molds
FR1383990A (fr) * 1963-11-18 1965-01-04 Voisin Ets A Machine à mouler les noyaux en sable durci en boîtes
DE1920920A1 (de) * 1969-04-24 1970-11-05 Niemeyer Soehne Stahl Pflug Maschine zum Herstellen von Giessereiformen aus Formsand
US4190097A (en) * 1977-11-23 1980-02-26 Grede Foundries Inc. Apparatus for making foundry cores
EP0123756A1 (de) * 1983-04-27 1984-11-07 Naniwa Products Co, Ltd Vollautomatische "cold box" Maschine für das Formen eines integrierten Verbundkernes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384870A1 (de) * 1989-02-24 1990-08-29 Kuhn S.A. Kernschiessmaschine
FR2643579A1 (fr) * 1989-02-24 1990-08-31 Kuhn Sa Machine a tirer des noyaux de fonderie
CN115635049A (zh) * 2022-04-14 2023-01-24 中国第一汽车股份有限公司 一种可用于动力输入的翻转式壳型机模具回转轴

Also Published As

Publication number Publication date
ES2010217B3 (es) 1989-11-01
FR2594363A1 (fr) 1987-08-21
ATE44665T1 (de) 1989-08-15
EP0238428B1 (de) 1989-07-19
DE3760322D1 (en) 1989-08-24
FR2594363B1 (fr) 1988-06-17
US4742862A (en) 1988-05-10
JPS62192228A (ja) 1987-08-22

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