EP1661629A2 - Appareil à vibrations pour l'éjection d'objets - Google Patents

Appareil à vibrations pour l'éjection d'objets Download PDF

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Publication number
EP1661629A2
EP1661629A2 EP05110686A EP05110686A EP1661629A2 EP 1661629 A2 EP1661629 A2 EP 1661629A2 EP 05110686 A EP05110686 A EP 05110686A EP 05110686 A EP05110686 A EP 05110686A EP 1661629 A2 EP1661629 A2 EP 1661629A2
Authority
EP
European Patent Office
Prior art keywords
piston
cavity
conduit
rod
ejector 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
EP05110686A
Other languages
German (de)
English (en)
Other versions
EP1661629A3 (fr
EP1661629B1 (fr
Inventor
Silvano Bordignon
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.)
Individual
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Individual
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Filing date
Publication date
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Publication of EP1661629A2 publication Critical patent/EP1661629A2/fr
Publication of EP1661629A3 publication Critical patent/EP1661629A3/fr
Application granted granted Critical
Publication of EP1661629B1 publication Critical patent/EP1661629B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
    • B06B1/183—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with reciprocating masses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/12—Fluid oscillators or pulse generators

Definitions

  • the present invention refers to an apparatus for generally displacing items that are laid down onto a collecting tray or into a collecting container, by imparting a vibratory motion to said tray or container in a generally horizontal or inclined direction, wherein this apparatus will be generally and conventionally referred to as a scrap ejector in the description that follows hereinbelow.
  • scrap ejectors are known in the art; for instance, a scrap ejector is known from the disclosure in the Italian patent application No. PN2001A000087, which makes use of an improved and balanced type of connection of a pneumatic motor to a container so as to impart a vibratory motion to said container.
  • PN2001A000087 makes use of an improved and balanced type of connection of a pneumatic motor to a container so as to impart a vibratory motion to said container.
  • no indication is given in said patent as far as the type and mode of operation of said pneumatic motor are concerned.
  • auxiliary piston moving crosswise, i.e. transversally relative to the main pistons is driven via a cam system based on a rubbing action, and this fact is largely known to be the cause of not only a quite rapid wear-down, but also a power loss, due to a greater usage of force, that unavoidably leads to slowed-down operating rates.
  • a scrap ejector comprises a pneumatic motor 1, a rod 2 that is driven into an axial motion by said motor and is connected to a drive plate 6, which is in turn connected to a sliding plate or, more simply, slide 3 that carries the pan or container (not shown) onto or into which the items to be removed are collected.
  • Said drive plate 6 may be firmly joined, by means of two tie rods 41 and 42, to a second drive plate 7 separated from the first one, so as to enlarge the resting base for the slide 3.
  • said pneumatic motor 1 comprises an outer body 4, from an aperture of which said rod 2 is able to come out.
  • a first cylindrical cavity 5 which is in communication with said aperture 8 and, furthermore, accommodates a first piston 9 connected with a face 10 thereof to the inward end portion of said rod 2.
  • a second cylindrical cavity 11 which is arranged so as to connect said first cavity 5 with the exterior of said outer body 4 on the opposite side of the aperture 8.
  • a second piston 12 adapted to slidably displace therein in a substantially sealed, i.e. fluid-tight manner, except for the cases that will be described further hereinbelow, so that said second piston substantially behaves as a shutter as regards its own cavity 11.
  • first and second cavities and therefore the pistons 9 and 12 associated thereto, are such that the first cavity 5 has a cross-section area B that is larger than the cross-section area A of the second cavity 11, as this is illustrated schematically in Figures 3 and 4.
  • a first manner is to provide a single annular groove 14 in the outer surface of the piston 12, so that said two distinct6 grooves can be considered as being simple sub-portions of said single annular groove 14, as this is symbolically illustrated in Figure 5; or between said two physically and actually separated grooves 14 and 15 there is provided a through-conduit 19 that connects them to each other in a permanent manner, as this is best illustrated in Figure 6.
  • first conduit 20 connects the chamber of the first cavity 5, as also comprised between said two pistons 9, 12, with a first port 21 provided in the surface of said second cavity 11;
  • second conduit 22 connects a source of compressed gas 23, usually compressed air, with a second port 24, which is also provided in the outer surface of the same second cavity;
  • third conduit 25 connects the outside withy a third port 26 that is again provided in the surface of said second cavity 11.
  • first two ports 21 and 24 are so positioned and spaced from each other as to enable the second piston 12 can move into both:
  • the drive plate 6 is rigidly connected to the second plate 7, which is so sized and arranged, relative to the second piston 12, as to ensure that, when said rod 2 is pushed outwards, the second plate 7 pushes in turn the outer portion of said second piston 12 towards the interior of the outer body 4, owing to said rod 2, said first plate 6, said tie rods 41, 42 and said second plate 7 being appropriately linked together.
  • the first piston 9 stops moving, thereby putting an end to the first stroke distance thereof.
  • an elastic spring 30, which is suitably provided in the remaining portion (not comprised between the pistons) of the first cavity, and which is no longer contrasted by the pressure acting upon the first piston at this point, starts urging the latter into moving in the opposite direction.
  • the motion of the whole apparatus is substantially due to the reciprocating movement of the first piston, which is alternately exposed to a pneumatic force on a side and an opposite force (the spring 30) on the other side, thereby behaving like a double-acting piston.
  • the cavity 45 - instead of being partially occupied by the spring 30 - is allowed to communicate, via a suitable channel 47, with a source of compressed gas (not shown), so that the elastic countering action of the elastic spring 30 is in this case replaced with the pressure exerted by said compressed gas against the opposing face 10 of the first piston lying therebehind.
  • a source of compressed gas not shown
  • the advantage of such solution lies in the elimination of the spring 30, along with the largely known drawbacks connected therewith.
  • the spiral spring 30 is replaced by the pneumatic force acting upon the face 10 of the first piston, thereby providing a gas spring of a conventional kind.
  • a check valve 49 is fitted in said conduit 48 to prevent the pressure in the cavity 45 from being released, in particular in the transient phase between the third and the fourth setting.
  • the pressure acting on the side 10 of the first piston 9 will under no circumstance be sufficient, i.e. rise to a value enabling it to overcome the force being exerted upon the piston 9 by the pressure acting against the opposite face 33, since, while the pressures on the two faces are the same, the surface area of the face 10 is clearly smaller than the surface area of the face 33, due to the presence of the rod 2, on which no pressure is in fact exerted.
  • a small spacing member 32 having an appropriately reduced diameter, preferably either on the face 33 of the first piston or the face 34 of the second piston 12.
  • said second conduit 22 and/or said third conduit 25 are provided with appropriate flow control valves 50, 51, which are adapted to be operated selectively so as to be able to deliver a flow of gas at such pressure and rate as to bring about differing velocities in accordance with the actual operating needs ( Figure 12).
  • the asymmetry in the operation of the scrap ejector may of course be ensured through a number of different means, and combinations thereof, i.e. by selecting and calibrating in an appropriate manner - as all those skilled in the art are anyway fully capable of doing - said elastic spring 30, the ratio of the cross-section area of the rod 2 to the cross-section area of the first piston 9, the adjustment or setting of either one or both said valves 50, 51 in the respective second conduit 22 and third conduit 25 thereof, as the case may be.
  • conduits 47 and 48 delivering compressed gas into the cavity 45 are fully eliminated, while providing the same cavity 45 in a fluid-tight construction, possibly pre-loaded with an initial bias pressure of such a value as to cause the first piston 9 to move back against the second piston 12 as soon as the third conduit 25 is put in connection, i.e. is set into communicating with the portion of said first cavity 5 comprised between the two pistons.
EP20050110686 2004-11-25 2005-11-14 Appareil à vibrations pour l'éjection d'objets Active EP1661629B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPN20040020 ITPN20040020U1 (it) 2004-11-25 2004-11-25 Dispositivo vibratorio per evacuare articoli

Publications (3)

Publication Number Publication Date
EP1661629A2 true EP1661629A2 (fr) 2006-05-31
EP1661629A3 EP1661629A3 (fr) 2011-08-03
EP1661629B1 EP1661629B1 (fr) 2012-07-04

Family

ID=35929069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050110686 Active EP1661629B1 (fr) 2004-11-25 2005-11-14 Appareil à vibrations pour l'éjection d'objets

Country Status (3)

Country Link
EP (1) EP1661629B1 (fr)
ES (1) ES2391736T3 (fr)
IT (1) ITPN20040020U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101758016A (zh) * 2010-02-11 2010-06-30 北京国电富通科技发展有限责任公司 一种激振器
CN101537577B (zh) * 2009-04-24 2011-12-14 中国地质大学（武汉） 一种应用于振动切削的电控液击激振方法及装置
IT202100030968A1 (it) * 2021-12-09 2023-06-09 Bordignon S R L Motore pneumatico e trasportatore di oggetti, in particolare per evacuare sfridi

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031812A (en) * 1974-03-08 1977-06-28 Nikolai Vasilievich Koshelev Hydraulic vibrator for actuator drive
US4142447A (en) * 1976-06-24 1979-03-06 Ingersoll-Rand Company Hydraulic actuator
AU514731B2 (en) * 1977-12-02 1981-02-26 Bron Dan Reciprocating actuator
EP0231406A2 (fr) * 1986-01-22 1987-08-12 Inc. Vibro Industries Vibrateur accéléré asymétriquement pour le transport de matériaux
US6318235B1 (en) * 1999-06-04 2001-11-20 Poclain Hydraulics Industrie Hydraulic motor cylinder-capacity selector for avoiding jarring when switching from one cylinder capacity to another
ITPN20010087A1 (it) * 2001-12-14 2003-06-16 Romeo Bordignon Evacuatore di sfridi

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031812A (en) * 1974-03-08 1977-06-28 Nikolai Vasilievich Koshelev Hydraulic vibrator for actuator drive
US4142447A (en) * 1976-06-24 1979-03-06 Ingersoll-Rand Company Hydraulic actuator
AU514731B2 (en) * 1977-12-02 1981-02-26 Bron Dan Reciprocating actuator
EP0231406A2 (fr) * 1986-01-22 1987-08-12 Inc. Vibro Industries Vibrateur accéléré asymétriquement pour le transport de matériaux
US6318235B1 (en) * 1999-06-04 2001-11-20 Poclain Hydraulics Industrie Hydraulic motor cylinder-capacity selector for avoiding jarring when switching from one cylinder capacity to another
ITPN20010087A1 (it) * 2001-12-14 2003-06-16 Romeo Bordignon Evacuatore di sfridi

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101537577B (zh) * 2009-04-24 2011-12-14 中国地质大学（武汉） 一种应用于振动切削的电控液击激振方法及装置
CN101758016A (zh) * 2010-02-11 2010-06-30 北京国电富通科技发展有限责任公司 一种激振器
IT202100030968A1 (it) * 2021-12-09 2023-06-09 Bordignon S R L Motore pneumatico e trasportatore di oggetti, in particolare per evacuare sfridi
EP4194706A1 (fr) * 2021-12-09 2023-06-14 Bordignon S.r.l. Moteur pneumatique et convoyeur d'objets, en particulier pour enlever des déchets

Also Published As

Publication number Publication date
EP1661629A3 (fr) 2011-08-03
ITPN20040020U1 (it) 2005-02-25
EP1661629B1 (fr) 2012-07-04
ES2391736T3 (es) 2012-11-29

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