EP3585536A1 - Device for installing an injection piston in or removing same from a moulding machine - Google Patents
Device for installing an injection piston in or removing same from a moulding machineInfo
- Publication number
- EP3585536A1 EP3585536A1 EP18704273.4A EP18704273A EP3585536A1 EP 3585536 A1 EP3585536 A1 EP 3585536A1 EP 18704273 A EP18704273 A EP 18704273A EP 3585536 A1 EP3585536 A1 EP 3585536A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- injection
- machine
- injection piston
- carriage
- 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
Links
- 238000002347 injection Methods 0.000 title claims abstract description 141
- 239000007924 injection Substances 0.000 title claims abstract description 141
- 238000000465 moulding Methods 0.000 title claims abstract description 36
- 230000000295 complement effect Effects 0.000 claims abstract description 10
- 238000013519 translation Methods 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 9
- 238000000151 deposition Methods 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
Definitions
- the invention relates to a device for laying or removing an injection piston respectively in or out of a molding machine.
- FR-A-2 424 777 discloses an installation for the manufacture of foundry cores which comprises an injection plunger.
- the actuator of the injection and displacement mechanisms of the metering chamber is a double-stroke cylinder comprising an inner rod rigidly connected to the injection plunger piston.
- On the inner rod is mounted a device for adjusting the position of the injection plunger.
- a device for adjusting the position of this chamber In the upper flange of the actuator of the injection and displacement mechanisms of the dosing chamber is incorporated a device for adjusting the position of this chamber, the upper part thereof having an opening for access to the chamber. device for adjusting the position of the injection plunger.
- This document essentially shows the characteristics of a positioning of a plunger in a foundry machine but gives no information as to the installation or removal of the plunger.
- the injection piston extends substantially horizontally and has a significant length. There are therefore difficulties in pulling it during its extraction, which must be preferably along the longitudinal axis of the piston, the molding machine having an opening substantially corresponding to the dimensions of the injection piston.
- the traveling crane may not exert a force substantially horizontal traction on the injection piston during removal or a substantially horizontal thrust force on the injection piston during its installation.
- the problem underlying the invention is to design a device for installing or removing an injection piston in a molding machine that can allow to place or extract the piston in or from the machine in a simple way without risk of damage to the injection piston.
- a device for laying or removal of an injection piston respectively in or out of a molding machine characterized in that the device comprises a lifting table supporting an attachment system of one end of the injection piston, the attachment system being mounted on a carriage movable in translation on the lifting table in two opposite directions, the movable carriage having drive means cooperating with means complementary drive carried by the lifting table, the drive means of the mobile carriage being effective by action of an operator on actuating means of said drive means.
- the technical effect is to obtain or removal of the injection piston by a device exerting a thrust or traction along the longitudinal axis of the injection piston.
- the laying and removal are done without requiring additional effort due to a pulling force or thrust not aligned with the injection piston.
- the drive means of the carriage are in the form of a toothed gear meshing in a rack as complementary drive means carried by the lifting table, the actuating means being in the form of a first flywheel actuating a rotation of the pinion gear, a reduction member being operative between the first flywheel and the pinion gear.
- the gearbox with a ratio of 1/10 reduces the thrust and traction force. At the time of installation of the piston, the effort is reduced by 10 times. During an action of an operator on the first wheel, the gearbox transmits the force on the rack, via the pinion, which moves the carriage and the attachment system on which the piston is attached.
- the lifting table comprises a work plane carrying the complementary drive means, the carriage being movable in a length of the work plane. A worktop is less expensive and easier to manufacture than a lift table.
- the lifting table is an adjustable height table with, on each of two opposite sides of the table, two articulated arms intersecting at least once in X and joining an upper portion and a lower portion of the lifting table , an actuating cylinder associated with the articulated arms bringing or removing the upper portion of the lower portion, the lower portion of the adjustable height table being supported by a frame mounted on wheels, an actuation of the actuating cylinder being effected by action of an operator on a lever.
- the carriage is in the form of a bracket with two branches inclined relative to each other, a first branch of the bracket extending parallel to the lift table carrying the drive means and the actuating means and a second branch of the bracket carrying, towards a free end opposite the first branch,
- the attachment system comprising an attachment member of the injection piston provided with a body in which s inserts a tail of a lifting ring defining an internal opening receiving a fixing means adapted to be inserted into the injection piston, the tail of the lifting ring being locked in position in the body by means of locking in the position of the tail of the lifting ring.
- the invention also relates to an assembly of an injection piston and of such a device, wherein an end of the piston vis-à-vis the device has a threaded recess into which a means of insertion is inserted. fastening secured to the attachment system of the device.
- the device comprises at least two guide supports, inclined towards each other and arranged symmetrically with respect to a longitudinal axis of the injection piston, the guide supports having free ends pointing towards the piston. injection with means for adjusting a spacing between the two guide supports so that the free ends of the guide supports abut a respective portion of the outer periphery of the piston.
- the injection piston When a large part of the injection piston or the entire injection piston is removed from the molding machine, the injection piston could be cantilevered on the carriage, since it is then at a distance from the molding machine.
- the guide supports carry the end portion of the injection piston furthest from the carriage and thus prevents the injection piston from bending downwards by this end portion.
- the piston is of elongated shape and has at one end opposite the end secured to the attachment system of the device a removable guide cone pointing in a direction opposite to the device.
- the invention also relates to a molding machine housing an injection piston having been part of such an assembly, the device having been detached from the injection piston and the end of the injection piston having the recess. threaded flush on a first face of the machine through an inlet opening made in this face, characterized in that the guide cone projects outside the injection machine through an outlet opening on a second face of the machine. the machine opposite to the first face.
- the invention also relates to a method of laying or removing an injection piston respectively in or out of a molding machine by such a device, the molding machine having a first face provided with an opening of inlet through which the injection piston is to be introduced or extracted, characterized in that it comprises the following steps for a pose:
- FIG. 1 is a diagrammatic representation of a top view in perspective of a molding machine, an injection piston and a device for fitting or removing the injection piston according to the present invention
- FIG. 2 is a diagrammatic representation of a bottom view in perspective of a portion of the laying or depositing device according to the present invention showing in particular a lifting table, a trolley and an attachment system, FIG. 2 being enlarged; compared to FIG.
- FIG. 3 is a diagrammatic representation of a top view in perspective of the other longitudinal face opposite to the longitudinal face shown in FIG. 1 of the molding machine, the injection piston and the laying device or deposit according to the present invention
- FIG. 4 is a diagrammatic representation of a bottom perspective view of a portion of the injection piston and of the laying or depositing device according to the present invention, showing in particular the working plane of the lifting table, the carriage and the attachment system, FIG. 4 being enlarged with respect to FIGS. 1 and 3,
- FIG. 5 is a diagrammatic representation of a perspective view of a portion of the injection piston and of the laying or depositing device according to the present invention in a different angle of view than that shown in FIG. FIG. 5 being enlarged with respect to FIGS. 1 and 3
- FIG. 6 is a schematic representation of a perspective view of a longitudinal half-section of the molding machine with a portion of the injection piston inserted partially into its interior, the front end of the injection piston carrying a guide cone, FIG. 6 being enlarged with respect to FIGS. 1 and 3,
- FIG. 7 is a schematic representation of a perspective top view from another angle of view of the same longitudinal face of the molding machine as that shown in FIG.
- the present invention relates to a device 1 for laying or removing an injection piston 2 respectively in or out of a machine 3 to be molded.
- the name of machine 3 to be molded is to be taken in its broadest sense and includes any machine 3 with an injection piston 2 therethrough, this injection piston 2 may weigh more than 100 kg and frequently about 250 kg.
- the device 1 for laying or removal comprises a lifting table 4 supporting a fastening system 5 of an end 2a of the injection piston 2.
- the attachment system 5 is mounted on a carriage 6 movable in translation on the table 4 lift in two opposite directions, this to exert a thrust to introduce the injection piston 2 in the machine 3 to be molded during installation or to exert traction to extract the injection piston 2 out of the machine 3 when a deposit.
- the thrust or traction advantageously take place along the longitudinal axis of the piston 2 to prevent blockages of the movement of the piston 2 by jamming with the extraction or entry face of the machine 3 to be molded.
- the mobile carriage 6 has drive means 7 cooperating with complementary drive means 8 carried by the lifting table 4.
- the drive means 7 of the mobile carriage 6 are effective by the action of an operator on actuating means 9 of said drive means 7.
- the drive means 7 of the carriage 6 may be in the form of a toothed gear 7 meshing in a rack 8 as complementary drive means 8 carried by the 4 lift table.
- the actuating means 9 may be in the form of a first wheel 9 actuating a rotation of the pinion gear 7.
- a reduction member is operative between the first wheel 9 and the pinion gear 7. The reduction may have a ratio of 1 out of 10.
- the lifting table 4 may include a work plane 1 1 carrying the complementary drive means 8, the carriage 6 being movable in a length of the work plane 1 1.
- the worktop 1 1 may be longer than the lift table 4, which represents a saving material, a work plan 1 1 requiring less material than a table 4 lift and being simpler construction.
- the worktop 1 1 can be secured at several points by fastening means with the lifting table 4 it covers to be closed in position on the lift table.
- a table 4 of adjustable height can be selected with, on each of two opposite sides of the table 4, two articulated arms 12 crossing at least once at X and joining an upper portion 4a and a lower portion 4b of the lifting table 4.
- an actuating cylinder associated with articulated arms 12 can bring or move the upper portion 4a of the lower portion 4b.
- Actuation of the actuating cylinder can be effected by action of an operator on a lever, preferably by action of his foot on the lever.
- the height-adjustable lifting table 4 can, by its lower portion 4b, be supported by a frame 14 mounted on wheels and rolling on the ground.
- the lifting table 4 may be a table 4 X having a hydraulic cylinder and supporting a load of 500 kg.
- Such 4 lift tables are available in the workshops and do not require any specific criteria for the support of the piston 2 except for their lifting capacities and relatively heavy load support of more than 250 kg.
- a table 4 X is particularly visible in Figures 1 to 3 and 7 and partly in Figure 2.
- the carriage 6 may be in the form of a bracket with two branches 6a, 6b inclined relative to each other, preferably 90 °.
- a first branch 6a of the substantially horizontal equilibrium can extend parallel to the lifting table 4 while resting on the lifting table 4 or on the working plane 1 1 carrying the drive means 7 and the actuating means 9.
- a second branch 6b of the bracket may carry towards a free end opposite its junction with the first branch 6a, the attachment system 5.
- Spacers 13 of support can be provided between the two branches 6a and 6b to secure them and thus strengthen the carriage 6.
- the attachment system 5 may comprise an attachment member of the injection piston 2 provided with a body 15 in which is inserted a tail of a lifting ring 16
- the lifting ring 16 may have a head delimiting at its interior an internal opening intended to be applied against a longitudinal end 2a of the injection piston 2. Through this internal opening of the lifting ring 16 passes a fixing means adapted to be inserted into the injection piston 2.
- the tail of the lifting ring 16 can be locked in position in the body 15 by a locking means 17 in position, advantageously a pin 17 passing through the body 15 and the tail of the lifting ring 16.
- the present invention also relates to a set of an injection piston 2 and a device 1 as previously described.
- a device 1 For receiving penetrating fastening means through the opening made in the head of the lifting ring 16, one end 2a of the piston 2 vis-à-vis the device 1 may have a threaded recess 20 in which is inserted the fastening means secured to the attachment system 5 of the device 1.
- the fixing means is then advantageously in the form of a screw or a threaded rod. This threaded recess 20 internal to the injection piston 2 is visible in dashed lines in FIG.
- the device 1 may comprise at least two guide supports 18.
- These guide supports 18 may be inclined towards one another and arranged symmetrically with respect to a longitudinal axis injection piston 2, so in opposition to a point of the length of the injection piston 2.
- the guide supports 18 may be in the form of bars inclined towards the injection piston 2 by having free ends 18a pointing towards the injection piston 2 and coming into contact with the periphery of the injection piston 2.
- These adjustment means 19 may be in the form of a second steering wheel 19 of adjustment.
- the injection pistons 2 are substantially cylindrical in shape, but with a diameter that can vary due to flanges or other shapes at their periphery, the guide supports 18 are abraded, after adjustment of the spacing separating them, by their free ends. 18a against the periphery of the injection piston 2.
- the second flywheel 19 is used at the time of extraction or installation of the injection piston 2 to compensate for the difference in diameter that may occur on the same piston 2 or between two different pistons 2 of two machines 3 to be molded different .
- the guide supports keep the piston 2 horizontal while avoiding any jamming of the piston 2 with the machine 3 to mold or excessive bending of the piston 2 injection down.
- the two guide supports 18, preferably steel, can move closer or away with a screw system inverted by making a vise to hold the injection piston 2 between them.
- the free ends 18a, visible in particular in Figure 2, guide supports 18 are preferably each coated with a respective pad, preferably a bronze pad.
- These bronze pads contribute to reducing the thrust or traction force exerted on the injection piston 2.
- Another advantageously lubricated material may also be used.
- These guide supports 18 are very advantageous when a large part of the injection piston 2 is outside the machine 3, for example half or more of the injection piston 2 and especially when all the injection piston 2 was extracted from the molding machine 3.
- the first and second wheels 9 and 19 may be provided with a crank to facilitate their rotation by the operator.
- the injection piston 2 of elongate and advantageously cylindrical shape, may have at an opposite longitudinal end 2b at the longitudinal end 2 a secured to the fastening system 5 of the device 1. a removable guide cone 21 pointing in a direction opposite to the device 1.
- This cone 21 for guiding is used to ensure a progression without jamming of the opposite longitudinal end 2b and thus the injection piston 2 inside the machine 3 to be molded, advantageously during a push of the piston 2 d injection into the machine 3 to be molded.
- this opposite longitudinal end 2b, then front end taking as a reference the path of the carriage 6 in the vicinity of the molding machine 3 can hit elements located inside the machine 3 to be molded.
- the guide cone 21 assists the progressive repositioning of the opposite end by passing through said obstacle members.
- the guide cone 21 serves during the installation of the injection piston 2 to pass the shoulder 24 of the injection cylinder of the machine 3 to be molded.
- the guide cone 21 may preferably be made of steel.
- the guide cone 21 may have passages 21a open on its periphery or its tip to allow its mounting on the opposite longitudinal end 2b of the injection piston 2 which carries it.
- a threaded shaft is inserted into each passage 21 and is screwed into the injection piston 2 which secures the guide cone 21 with the injection piston 2.
- the guiding cone 21 may have an auxiliary function, this when the piston
- the present invention therefore relates to a molding machine 3 housing an injection piston 2 having been part of an assembly as described above. .
- the device 1 for installation and removal has been detached from the injection piston 2.
- the longitudinal end 2a of the injection piston 2 having the previously threaded recess 20 opposite the fastening system 5 of the device 1 is then flush on a first face 3a of the machine 3 via an inlet opening. 22 practiced in that face.
- the guide cone 21 can project outside the injection machine 3 by an outlet opening 23 on the second face 3b of the machine 3 opposite to the first face 3a.
- the present invention finally relates to a method of laying or removing an injection piston 2 respectively in or out of a machine 3 to be molded by such device 1.
- the machine
- first face 3a provided with an inlet opening 22 through which the injection piston 2 is to be introduced or extracted.
- the laying method has the following steps:
- the removal process has the following steps:
- the injection piston 2 being initially inserted into the machine 3 to be molded with a longitudinal end 2a of the piston 2 flush with the first face 3a to the inlet opening 22, possibly with the device 1 joined to the molding machine 3,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1751357A FR3063028B1 (en) | 2017-02-21 | 2017-02-21 | DEVICE FOR PLACING OR REMOVING AN INJECTION PISTON IN OR OUT OF A MOLDING MACHINE |
PCT/FR2018/050098 WO2018154200A1 (en) | 2017-02-21 | 2018-01-16 | Device for installing an injection piston in or removing same from a moulding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3585536A1 true EP3585536A1 (en) | 2020-01-01 |
EP3585536B1 EP3585536B1 (en) | 2021-08-25 |
Family
ID=58401908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18704273.4A Active EP3585536B1 (en) | 2017-02-21 | 2018-01-16 | Device for installing an injection piston in or removing same from a moulding machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3585536B1 (en) |
FR (1) | FR3063028B1 (en) |
MA (1) | MA47582A (en) |
WO (1) | WO2018154200A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1188769B (en) * | 1978-05-04 | 1988-01-28 | Ts Pk I T Bjuro Glavantekh | FOUNDRY SOULS MANUFACTURING PLANT |
JPH0215983A (en) * | 1988-06-30 | 1990-01-19 | Aichi Steel Works Ltd | Work mounting and demounting device |
FR2886190B1 (en) * | 2005-05-25 | 2008-12-26 | Peugeot Citroen Automobiles Sa | AUTONOMOUS MOBILE LIFTING TABLE FOR THE POWER SUPPLY OF WORKSTATIONS |
KR100619877B1 (en) * | 2005-08-04 | 2006-09-06 | (주)태진이엔지 | Manual driving type work table |
DE102005048717A1 (en) * | 2005-10-12 | 2007-04-19 | Allper Ag | Multi-part piston for a cold chamber casting machine |
AT510516B1 (en) * | 2010-09-21 | 2013-10-15 | Trumpf Maschinen Austria Gmbh | MANUFACTURING CELL WITH A COMPONENT TRANSFER DEVICE AND TRANSPORT DEVICE FOR PARTS AND SPACERS |
CN203498020U (en) * | 2013-10-11 | 2014-03-26 | 福州台捷液压机械有限公司 | Detection lifting table |
CN204434166U (en) * | 2014-12-12 | 2015-07-01 | 国家电网公司 | A kind of lifting table for electrical equipment |
-
2017
- 2017-02-21 FR FR1751357A patent/FR3063028B1/en not_active Expired - Fee Related
-
2018
- 2018-01-16 WO PCT/FR2018/050098 patent/WO2018154200A1/en unknown
- 2018-01-16 MA MA047582A patent/MA47582A/en unknown
- 2018-01-16 EP EP18704273.4A patent/EP3585536B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2018154200A1 (en) | 2018-08-30 |
FR3063028A1 (en) | 2018-08-24 |
EP3585536B1 (en) | 2021-08-25 |
FR3063028B1 (en) | 2019-03-22 |
MA47582A (en) | 2020-01-01 |
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