EP3566814A1 - Machine de pressage - Google Patents

Machine de pressage Download PDF

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Publication number
EP3566814A1
EP3566814A1 EP18171216.7A EP18171216A EP3566814A1 EP 3566814 A1 EP3566814 A1 EP 3566814A1 EP 18171216 A EP18171216 A EP 18171216A EP 3566814 A1 EP3566814 A1 EP 3566814A1
Authority
EP
European Patent Office
Prior art keywords
swash plate
pressing machine
machine according
pin
planet carrier
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.)
Withdrawn
Application number
EP18171216.7A
Other languages
German (de)
English (en)
Inventor
Matthias Ruch
Rudolf Kreuzer
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.)
Von Arx AG
Original Assignee
Von Arx AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Von Arx AG filed Critical Von Arx AG
Priority to EP18171216.7A priority Critical patent/EP3566814A1/fr
Priority to US16/402,182 priority patent/US20190345919A1/en
Priority to CN201910378830.0A priority patent/CN110450095A/zh
Publication of EP3566814A1 publication Critical patent/EP3566814A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors

Definitions

  • the present invention relates to a pressing machine, in particular a hand-held pressing machine, as used for the pressing of workpieces, in particular fittings in the pipe installation or cable lugs in the electrical installation.
  • Press machines especially hand-held press machines, are used to press workpieces together, i. the workpieces, such as fitting and pipe, permanently connect to each other.
  • the drive of a hand-held pressing machine consists of an electric motor that drives an eccentric shaft via a gearbox.
  • the gearbox serves to reduce the speed.
  • a nominal speed of the engine, at which the engine has its maximum power, is thus downshifted by means of the transmission to a speed which is adequate for the power consumer.
  • the output shaft of the electric motor is arranged coaxially with the transmission output shaft and is connected directly or positively with this.
  • a piston pump is then arranged at right angles to the transmission output shaft, an eccentric output shaft shoulder pressing on the piston of the piston pump and moving the piston up and down.
  • the piston pump delivers a hydraulic fluid into a cylinder space and thus generates a pressing force on the pressing tool attached to the pressing machine for pressing the workpieces.
  • the described drive a pressing machine has the disadvantage that the pressing machine, due to the transmission and the rectangular arrangement of gear and piston pump, overall quite large and unwieldy. Especially in locations with little space where, for example, pipe connections are to be made by compression, the use of such a press machine is unfavorable and even impossible in some places.
  • the publication DE 101 24 265 A1 describes a friction gear with a gear shaft and conically inclined raceways for a rotating therein raceway body, wherein the raceways are also structured in terms of height over its circumference.
  • the track body performs an axial reciprocating motion during operation.
  • the friction gear of the DE 101 24 265 A1 is structurally complicated and very expensive to manufacture due to the height-structured and conically inclined raceways.
  • a pressing machine comprising a drive with an output shaft for generating a rotational movement, a transmission, which is connected on the input side to the output shaft of the drive, and the transmission is connected on the output side with a swash plate, and a pin, in contact with the swash plate is, so that the pin performs a stroke movement during a rotational movement of the output shaft of the drive.
  • a swashplate essentially consists of an inclined surface, wherein, as the swashplate rotates about its central axis, the inclination of the swashplate shifts in an angular range of - ⁇ to + ⁇ with respect to the axis of rotation.
  • a swash plate so the rotational movement of the output shaft of the drive in a lifting movement, ie, a reciprocating motion, the pin is converted, the lifting movement is in the axial direction of the output shaft.
  • said components can be arranged one behind the other in the axial direction and enable a slim, thin construction of the pressing machine. Thanks to its slim design, the press machine can also be used in narrow, difficult-to-reach areas.
  • a swash plate is easy to manufacture and low-friction operation, which increases the economy and reliability of the press machine.
  • the transmission is a planetary gear, which has a pinion, planet gears, ring gear and planet carrier.
  • a planetary gear is space-saving and allows a strong reduction of the speed.
  • the rotational speed of the output shaft which is optimally in the range of the rated speed of the drive, in particular an electric motor, to a reduced speed, which is suitable for the customer, here the swash plate for a piston pump.
  • the pinion of the planetary gear is driven by the output shaft of the drive.
  • a direct arrangement of the planetary gear on the output shaft of the drive also allows an axially space-saving design of the pressing machine.
  • the planet carrier has a bearing seat, and a bearing seat plane is inclined relative to the central axis of the planet carrier.
  • a swash plate can be arranged on the bearing seat.
  • the bearing seat simplifies the installation of the swash plate and stores the swash plate fitting. Due to the inclination of the bearing seat plane arranged thereon, in particular planar swash plate is also inclined by this angle relative to the central axis of the planet carrier.
  • a rotational movement of the swash plate moves due to the inclination of a fixed point on the swash plate in the axial direction along the central axis of the planet carrier. Thereby, a rotational movement of the swash plate in a simple and reliable and space-saving manner in a reciprocating motion, e.g. of the pen, to be converted in the axial direction.
  • the planetary gear has a first ball bearing for supporting the planet carrier. Due to the ball bearing of the planet carrier is stored space saving and low friction.
  • the planetary gear has a second ball bearing for supporting the swash plate.
  • the swash plate can be moved relative to the planet carrier, i. be stored independently of the movement of the planet carrier.
  • the planet carrier is connected to the swash plate.
  • the rotational and tumbling motion or only the wobbling motion of the planet gear carrier is transmitted to the swash plate.
  • the swash plate is connected via the second ball bearing with the planet carrier.
  • the connection via the second ball bearing makes it possible that the swash plate does not rotate with the planet carrier but, due to the inclined bearing seat of the second ball bearing on the planet carrier carries out only a wobbling motion.
  • the swash plate does not rotate. This minimizes friction between the pin in contact with the swash plate and the surface of the swash plate.
  • the pin and the swash plate communicate with each other via a point contact.
  • friction between the pin and the swash plate is further avoided and unwanted heat generation and wear due to friction is reduced or eliminated.
  • the swash plate is integrally formed with the planet carrier.
  • the swash plate is a part of the planet carrier and the integral component can be produced economically.
  • the installation is facilitated because only one component must be installed or fixed in the press. In this case, however, the swash plate rotates with the planet carrier, which increases the friction between the pin and the planet carrier.
  • the pin is pressed against the swashplate to provide permanent contact with the swashplate.
  • the permanent contact is thus independent of the orientation of the pressing machine available. Every movement of the swashplate transfers directly to the stylus. Thus, e.g. continuous operation of the piston pump can be ensured even when the pressing machine is operating in the direction of gravity.
  • the pin drives a piston of a piston pump or is itself a piston of a hydraulic pump. If the pin drives the piston of a piston pump, the pin can be replaced more easily when worn than the piston itself. If the pin itself the piston of a hydraulic pump so eliminates an additional connection of the components and the corresponding space requirement.
  • the drive is preferably an electric motor, in particular a DC motor.
  • the pressing machine can also be driven by an accumulator, and can be used mobile.
  • Other drives may include pneumatic, hydraulic or manual drives that provide rotational movement.
  • the pressing machine is a hand-held pressing machine which has a piston pump with hydraulic fluid for generating a pressing force in a hydraulic system.
  • a hand-held pressing machine allows flexible use of the pressing machine. Workpieces, in particular pipes, can already be mounted at their final position and are only connected to one another with the aid of the pressing machine, i. pressed. This facilitates assembly in hard to reach areas or complex pipe / workpiece designs.
  • Fig. 1 shows an embodiment of a hand-held pressing machine 1.
  • the pressing machine 1 is designed in its dimensions and weight so that a user can hold and work with it.
  • the pressing machine 1 is held as a whole elongated to allow working in narrow and hard to reach areas. In particular, when pressing pipes, which in shafts or laid below work areas, is often little room for installation, so that a slim shape of the press machine 1 is advantageous.
  • an electric motor 2 is mounted as a drive 2, which drives the pressing machine 1.
  • the electric motor 2 is preferably a DC motor and can be operated by a cable connection to the mains or by means of a connected accumulator (not shown).
  • the drive 2 may comprise a pneumatic motor, a hydraulic motor or other suitable drives 2.
  • the rotational movement generated by the drive 2 is forwarded via an output shaft 4 to a transmission 10. With the help of the transmission 10, the speed is reduced.
  • the gear 10 drives a swash plate 18, which converts the rotational movement into a lifting movement in the axial direction A, wherein the lifting movement is used to drive a piston pump 20.
  • the piston pump 20 generates a fluid pressure in a cylinder space by promoting hydraulic fluid. Due to the increasing pressure in the cylinder chamber, a working piston is moved, which drives a pressing tool (not shown), which is attached to the tool holder 8 of the pressing machine 1.
  • the pressing jaws of the tool are closed with increasing pressure in the cylinder space and transmit the force to the workpieces to be pressed (not shown) and press them together. In this case, pressing pressures of several hundred bar, preferably 100 to 700 bar can be generated and transmitted.
  • Fig. 2 shows a partial detailed view of an embodiment of the pressing machine 1 in the partial section.
  • the transmission 10 is in this embodiment, a planetary gear 10 and is driven directly by the output shaft 4 of the electric motor 2.
  • the transmission 10 is used to reduce the speed of the speed while increasing the torque of the output shaft 4.
  • torque-weaker drives 2, in particular electric motors 2 can be used.
  • the reduction is determined by the number of teeth of the pinion 11, the planet wheels 12 and the ring gear 13.
  • the pinion 11 drives the planet gears 12, which rotate in the ring gear 13.
  • the ring gear 13 is fixed.
  • the planet gears 12 can rotate on bolts 14a with respect to the planet carrier 14 and drive it in rotation. Due to the movement of the planetary gears 12, the planet carrier 14 then rotates in the opposite direction to the direction of rotation of the planet gears 12.
  • the planet carrier 14 is mounted on its first side by means of a first ball bearing 15 and can rotate relative to the ring gear 13. On the transmission output side of the planet carrier 14 is rotatably mounted with its central axis in an opening of a bearing 19. In addition, the planet carrier 14 on the transmission output side on an inclined surface E.
  • the inclination of the solder of the surface E by the angle ⁇ with respect to the central axis A is preferably 3 - 45 °, more preferably 5 - 25 ° and even more preferably 9 - 12 °.
  • the necessary stroke and the effective diameter of the swash plate 18 determine the inclination of the surface E.
  • a swash plate 18 is rotatably mounted on the inclined surface E of the Planetenradlys 14.
  • the swash plate 18 has a planar, circular shape. At its outer edge, the swash plate 18 may be bent to receive a second ball bearing 16 behind it.
  • the swash plate 18 may be mounted friction on the planet carrier 14 via the second ball bearing 16, so that it performs a pure tumbling motion, but does not rotate with the planet carrier.
  • the swash plate 18 is still seated on a bearing seat 17 of the planet carrier 14 and can be installed as appropriate and fast.
  • the swashplate 18 may be movably or fixedly connected to the planet carrier 14 or formed integrally therewith.
  • the swash plate 18 has no depressions, but is flat on its surface to avoid friction during a movement of the swash plate 18 relative to the pin 22.
  • the swash plate 18 is still in direct contact with a pin 22 which drives a piston pump 20 via its linear oscillating movement.
  • the pin 22 may be in one embodiment, the piston 26 of a piston pump 20 itself.
  • the pin 22 is mounted in a bearing 19. In one embodiment, the pin 22 is movably inserted through an opening of the bearing 19. The pin 22 will continue with Help a spring 24 pressed on the swash plate 18.
  • the pin 22 is preferably rounded towards the swash plate 18 out. This results in a particularly low-friction point contact between the pin 22 and the swash plate 18, which moves him back and forth.
  • FIGS. 3a and 3b show two different positions of the swash plate 18 with respect to the pin 22.
  • the swash plate 18 is inclined in each case by the maximum angular amount +/- ⁇ .
  • Fig. 3a the swash plate 18 is shown inclined so that its contact area with the pin 22 is inclined towards the pin 22. Thereby, the pin 22 is pressed by the swash plate 18 against the spring 24 in the direction of the piston pump 20 and can promote hydraulic oil.
  • the Fig. 3b shows a rotated by 180 ° position of the swash plate 18 and the planet carrier 14 to the position Fig. 3a ,
  • the planet carrier 14 has been rotated accordingly by 180 °.
  • the swash plate 18 is inclined in its contact area with the pin 22 away from the pin 22, so that the pin 22 is pressed away from the piston pump 20 in the direction of the transmission 10 and the swash plate 18 due to the spring force of the spring 24.
  • the maximum stroke D of the pin 22 is preferably 3 - 20 mm, particularly preferably 5 - 10 mm.
  • the preferred stroke D is dependent on the stroke of the piston pump 20 and may also be shorter than these values, in particular 1 - 2.9 mm.
  • the pin 22 is arranged at a certain radial distance from the central axis A. If the pin 22 is arranged closer to the center axis A, then the stroke D decreases at the same angle ⁇ .
  • the planetary carrier 14 rotates continuously, so that the pin 22 carries out a continuous oscillating lifting movement or reciprocating movement.
  • piston pump 20 is operated.
  • the pin 22 is pressed by the swash plate 18 once in the direction of the piston pump 20 and by the spring 24 once away from the piston pump 20.
  • the lifting movement causes a conveying of hydraulic fluid in the piston pump 20 for closing the pressing jaws on the pressing machine 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
EP18171216.7A 2018-05-08 2018-05-08 Machine de pressage Withdrawn EP3566814A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18171216.7A EP3566814A1 (fr) 2018-05-08 2018-05-08 Machine de pressage
US16/402,182 US20190345919A1 (en) 2018-05-08 2019-05-02 Press machine
CN201910378830.0A CN110450095A (zh) 2018-05-08 2019-05-08 压机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18171216.7A EP3566814A1 (fr) 2018-05-08 2018-05-08 Machine de pressage

Publications (1)

Publication Number Publication Date
EP3566814A1 true EP3566814A1 (fr) 2019-11-13

Family

ID=62142988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18171216.7A Withdrawn EP3566814A1 (fr) 2018-05-08 2018-05-08 Machine de pressage

Country Status (3)

Country Link
US (1) US20190345919A1 (fr)
EP (1) EP3566814A1 (fr)
CN (1) CN110450095A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010908A1 (fr) * 1995-09-22 1997-03-27 Greenlee Textron Inc. Appareil de sertissage portatif alimente par batterie
JP3455897B2 (ja) * 1998-10-19 2003-10-14 株式会社泉精器製作所 油圧圧着工具における作動油の戻し防止機構
WO2006132820A2 (fr) * 2005-06-03 2006-12-14 Fci Americas Technology, Inc. Outil hydraulique alimente par accumulateur portable
WO2007130258A2 (fr) * 2006-05-04 2007-11-15 Fci Americas Technology, Inc. Outil hydraulique doté d'une transmission à plateau oscillant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010908A1 (fr) * 1995-09-22 1997-03-27 Greenlee Textron Inc. Appareil de sertissage portatif alimente par batterie
JP3455897B2 (ja) * 1998-10-19 2003-10-14 株式会社泉精器製作所 油圧圧着工具における作動油の戻し防止機構
WO2006132820A2 (fr) * 2005-06-03 2006-12-14 Fci Americas Technology, Inc. Outil hydraulique alimente par accumulateur portable
WO2007130258A2 (fr) * 2006-05-04 2007-11-15 Fci Americas Technology, Inc. Outil hydraulique doté d'une transmission à plateau oscillant

Also Published As

Publication number Publication date
US20190345919A1 (en) 2019-11-14
CN110450095A (zh) 2019-11-15

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