EP1689563A1 - Elektrisch betriebenes presswerkzeugger t - Google Patents
Elektrisch betriebenes presswerkzeugger tInfo
- Publication number
- EP1689563A1 EP1689563A1 EP04761960A EP04761960A EP1689563A1 EP 1689563 A1 EP1689563 A1 EP 1689563A1 EP 04761960 A EP04761960 A EP 04761960A EP 04761960 A EP04761960 A EP 04761960A EP 1689563 A1 EP1689563 A1 EP 1689563A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press tool
- piston
- tool device
- cylinder
- cylinder unit
- 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
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
Definitions
- the present invention relates to an electrically operated press tool apparatus having a hydraulic pump acting on a hydraulic piston cylinder unit operatively connected to a reel holder, the rollers of which roll on the jaws of a pair of nippers and thus move the same relative to each other, and the press tool apparatus has a resilient hydraulic oil receptacle, as well an operation valve for opening a passage from a flow line to a return line between the hydraulic oil accommodating container and the cylinder space of the piston cylinder unit.
- Portable, hydraulically actuated pressing tool devices of the type mentioned are used for pressing of coupling elements, such as press sleeves, press fittings, pipe sleeves, telescoped pipe sections and the like.
- the pressing tools have a clamping pliers with clamping jaws, which have a pressing space for receiving the to be pressed Form coupling element.
- the pressing pressure necessary for the compression is supplied by a, generally hydraulic, drive. All devices available on the market today are relatively large and correspondingly heavy. Reductions in size have always failed due to the requirements that arise from the previous design. Changes to the size of the pressing tongs would restrict their range of application and consequently, according to current knowledge, the pressing tongs can not be reduced in size.
- the corresponding roll holder must be adjusted in size of the pressing tongs and this of course also applies to the fork-shaped receptacle in which the pressing tongs is held and which is usually made in one piece with the subsequent cylinder housing.
- the size of the cylinder housing is practically in turn dependent on the applied forces and these forces are in turn depending on the Gr ⁇ sse of the clamping pliers.
- the hydraulic pump is followed by an electric motor drive and optionally a battery required for feeding the electric motor.
- the required hydraulic oil is sucked from a hydraulic oil reservoir and pumped into the cylinder.
- the piston is moved in the direction of actuation and the clamp is closed. If such a clamping operation is completed, the hydraulic oil is pumped back into the hydraulic tank in many devices and in some devices of this type a direct return from the supply line to a return line or suction is effected via a corresponding actuating valve.
- the functions mentioned require a structure as just described. Accordingly, miniaturization is practically impossible without loss of performance. A reduction of the pressing tongs device can therefore be achieved only with innovative measures.
- a pressing tong device of the type mentioned constructively so that the entire structure of the device can be made smaller.
- This object is achieved by a pressing tongs device of the type mentioned in the introduction with the features of patent claim 1. This reduces the volume of the device around the space of a separately attached hydraulic oil storage container and correspondingly reduces the entire device and its housing.
- the solution according to the invention can also be implemented in pressing tongs devices in which the return flow of the hydraulic oil from the supply line via the return line directly into the oil reservoir takes place by means of a manually actuatable actuating valve.
- the actuating valve so that it is completely covered in the piston-cylinder unit of the elastic sleeve and the actuation of the valve is effected by pressure on the elastic sleeve.
- FIG. 1 is a perspective view of a possible embodiment of the pressing tool device;
- FIG. 2 shows a section through the functional part of a press tool device according to the prior art, while
- FIG. 3 shows this functional part in the embodiment according to the invention.
- FIG. 4 the same functional part according to FIG. 3 is rotated in the view through 90 ° and shown partly in section.
- Figure 5 shows only the piston cylinder part for itself with omission of the novel elastic sleeve in longitudinal section and
- FIG. 1 shows an embodiment of the pressing tool according to the invention in the form in which it is to be marketed.
- the actual functional part is packed in a plastic case.
- the clamping jaw 2 which has two jaws 5 and is held by a secured bolt in a fork-shaped receptacle.
- the rollers 8 which are rotatably mounted in a roll holder 7.
- these rollers 8 are moved forward, the jaws 5 close.
- the jaws 5 are shown in the closed state.
- the functional unit has a hydraulic pump 3, which is realized here as a gear pump.
- the hydraulic pump 3 sucks via a suction line 11 hydraulic oil from a elastic hydraulic oil receptacle 6 and pumps this via the flow line 10 into the cylinder chamber 12 and pushes the piston 15 forward.
- a roller holder 7 with rollers 8 mounted therein is pushed over the piston rod to the front, wherein the rollers 8 press against the clamping jaws 5 to the outside and thus close the clamping jaw 2.
- the piston rod is omitted, as well as the attached parts, namely the roller holder 7 and the rollers 8 mounted therein.
- the piston 15 itself is shown with its piston seal 17 and the cylinder housing 13 is a thread 18 is present for attachment of the cylinder head.
- the cylinder housing 13 is integrally connected to the piston-cylinder unit 4.
- the cylinder chamber 12 opposite end of the piston-cylinder unit 4 is provided with bearing receivers 20 in which moldings of the hydraulic pump 3 are mounted fastened.
- bearings of the gears 21 and 22 are in that end wall of the piston-cylinder unit 4 is formed.
- a shaft 23 is formed, which is in communication with the drive motor 14, not shown here.
- Both the mold parts of the hydraulic pump 3 and the gears 21, 22 and the drive shaft 23 stored in a bearing head 24.
- the drive shaft 23 is sealed with a seal 25 to the outside and is held by a pinch ring 26 and a Segerring 27 in this position.
- the pump housing 29 is secured by means of bolts 28 both relative to the piston-cylinder unit 4 and to the bearing head 24, as can be seen in the region of the partial section in FIG.
- a union nut 30 is slipped over the bearing head 24 and the hydraulic pump 3 and screwed onto the piston-cylinder unit 4.
- the piston-cylinder unit 4 has the maximum diameter directly adjacent to the union nut 30 and corresponds approximately to its diameter. In this area, the piston-cylinder unit 4 has a first retaining groove 31. Subsequently, the piston-cylinder unit is reduced in diameter and thus forms an annular chamber 32. The volume of the annular chamber 32 is additionally increased by an annular groove 33. Subsequent to the annular chamber 32, an annular bead 34 is formed on the cylinder housing in the region of the cylinder housing 13, wherein the diameter of this annular bead 34 in turn corresponds to the diameter of the piston-cylinder unit in the region of the first retaining groove. In the annular bead 34, a second retaining groove 35 is formed.
- the entire area between the first and second retaining groove 31, 35 is covered by a collar 36, preferably made of rubber-elastic material.
- the elastic sleeve 36 thus forms the hydraulic oil reservoir 6.
- the elastic sleeve 36 is held on the piston-cylinder unit both positive and non-positive.
- the elastic sleeve 36 has corresponding beads, which lie in the first and second retaining groove 31, 35.
- clamping brackets 37 the can be realized for example by so-called Jardinabbinder.
- the piston-cylinder unit 4 is traversed by the already mentioned actuation valve 9. This actuating valve 9 is in the figure 3 perpendicular to the cutting plane.
- FIG. 4 the same actuating part is shown as in FIG. 3, but rotated by 90 ° and only partially cut.
- the first partial sectional area was used to represent the attachment of the hydraulic pump, while the second partial sectional area is located where the actuating valve 9 extends.
- the actuating valve 9 With regard to the operation and structure of the actuating valve 9, reference is again made to EP-A-1 '157' 786.
- the actuating valve 9 establishes a connection between the feed line 10 and the return line 11 or blocks this connection.
- the manual actuation of the valve 9 via a Betat Trentauersstossel 40, which passes through a bearing pin 41.
- a spring 42 is inserted, which acts on the Betat Trentsstossel 40 and presses the Betat Trentsstossel outwardly on the inner wall of the elastic sleeve 36.
- an actuating button 44 is provided, which is axially movable in operative connection with the Betat Trentsstossel 40 can be brought. That way is the otherwise highly problematic sealing passage through the hydraulic oil receptacle 6 avoided.
- a filter 43 is inserted here between the actuating valve 9 and the bearing pin 41.
- This filter 43 can be realized for example from a sintered metal or plastic granules with a correspondingly selected pore size.
- the oil filter 43 is penetrated by the Betat Trentsstossel 40 and is sealed accordingly by a sealing ring 45 to the outside.
- the two figures 5 and 6 finally show the piston-cylinder unit 4 shown by itself, wherein the actuating valve is not shown.
- the bore extending in a straight line from the pump area into the cylinder chamber 12, said bore is the flow line 10 and passes through the receiving bore for the actuating valve.
- Parallel to this bore which forms the Vorlaus effet 10, extends a second bore which extends from the pump side approach to the transverse bore, in which the actuating valve 9 comes to rest.
- This hole is divided into two sections by a second bore opening into the bore. From the valve bore to the mouth of the second bore is the actual return line 11. From here then runs approximately at an angle of 45 ° extending a section 11 ', the simultaneously suction line and return line, depending on the corresponding function.
- the inclined portion 11 ' preferably opens into the annular groove 33, which is provided to increase the volume.
- This annular groove 33 has a rounded cross-section and preferably the portion 11 'of the return line 11 opens into this annular groove 33.
- This arrangement is particularly advantageous because it has been proven that the return flow of the hydraulic oil has so much energy that destroyed the cuff of the returning hydraulic oil can be. To avoid this, therefore, three measures have been implemented. As a first measure, the portion 11 'of the return line 11 was mounted inclined running, so that the return flow does not impinge perpendicularly on the cuff.
- the volume-enlarging annular groove 33 was provided and the partial section 11 'placed in this annular groove, so that the distance from the outlet opening of the return line 11 to the sleeve is increased.
- the cross section of the section 11 ' has been chosen to be larger than the cross section of the actual return line 11.
- the section 11' already forms an expansion space.
- the additionally present in the piston-cylinder unit 4 holes 45 and 46 are perpendicular to the longitudinal axis and open into the flow 10 and in the intake pipe 10 '. These holes can be used to attach appropriate sensors by means of which the existing Oil pressure values can be determined during the pressure on and the pressure reduction. From these measurements, various information can be found, which need not be dealt with essentially here, but it should be noted that with these measurements, for example, the permeability of the oil filter 43 can be monitored so that it can be seen when this oil filter can be replaced got to .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Processing Of Terminals (AREA)
- Details Of Reciprocating Pumps (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH20682003 | 2003-12-04 | ||
| PCT/CH2004/000620 WO2005053909A1 (de) | 2003-12-04 | 2004-10-12 | Elektrisch betriebenes presswerkzeuggerät |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1689563A1 true EP1689563A1 (de) | 2006-08-16 |
| EP1689563B1 EP1689563B1 (de) | 2007-08-01 |
Family
ID=34638017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04761960A Expired - Lifetime EP1689563B1 (de) | 2003-12-04 | 2004-10-12 | Elektrisch betriebenes presswerkzeugger t |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20070271992A1 (de) |
| EP (1) | EP1689563B1 (de) |
| JP (1) | JP2007512967A (de) |
| CN (1) | CN100423902C (de) |
| AT (1) | ATE368551T1 (de) |
| DE (1) | DE502004004533D1 (de) |
| ES (1) | ES2291911T3 (de) |
| WO (1) | WO2005053909A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2135709A2 (de) | 2008-06-18 | 2009-12-23 | Von Arx AG | Elektrisch betriebenes Presswerkzeuggerät |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH699690B1 (de) * | 2008-10-03 | 2012-07-31 | Arx Ag | Rollenhaltereinheit. |
| DE202008015574U1 (de) * | 2008-11-24 | 2009-12-31 | Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg | Antriebseinrichtung für ein Pressgerät sowie Pressgerät mit einer solchen Antriebseinrichtung |
| JP7137999B2 (ja) * | 2018-09-10 | 2022-09-15 | マクセルイズミ株式会社 | 電動工具 |
| JP2020075318A (ja) * | 2018-11-07 | 2020-05-21 | マクセルイズミ株式会社 | 電動工具 |
| USD1012142S1 (en) | 2022-01-28 | 2024-01-23 | Milwaukee Electric Tool Corporation | Strut shearing die |
| USD1016111S1 (en) | 2022-01-28 | 2024-02-27 | Milwaukee Electric Tool Corporation | Strut shearing die |
| EP4338892A1 (de) | 2022-06-17 | 2024-03-20 | Milwaukee Electric Tool Corporation | Hydraulisches system für ein elektrowerkzeug |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB597228A (en) * | 1944-12-08 | 1948-01-21 | Augustus George Chamberlain | Improvements in or relating to reciprocating pumps for use in hydraulic transmissionof power |
| FR2563291A1 (fr) * | 1984-04-20 | 1985-10-25 | Etude Methode Applic Sarl | Verin hydraulique a commande manuelle |
| JPS62157785A (ja) * | 1985-12-28 | 1987-07-13 | 株式会社ベンカン | 管接続工具 |
| US4735048A (en) * | 1986-10-24 | 1988-04-05 | The Gregory Company | Hydraulic tool |
| US5195354A (en) * | 1989-03-31 | 1993-03-23 | Japan Storage Battery Co., Ltd. | Cam crank mechanism and motor driven hydraulic tool |
| FR2677908B1 (fr) * | 1991-06-20 | 1995-04-07 | Hydr Am | Outil autonome polyvalent tel que cisaille/ecarteur a commande hydraulique. |
| FR2708674B1 (fr) * | 1993-07-30 | 1996-05-15 | Dubuis | Pompe volumétrique à piston animé d'un mouvement linéaire alternatif. |
| JPH0811065A (ja) * | 1994-06-28 | 1996-01-16 | Kandenko Co Ltd | 充電式油圧工具のオイルタンク構造 |
| WO1999019947A1 (de) * | 1997-10-15 | 1999-04-22 | Gustav Klauke Gmbh | Hydraulisches pressgerät und verfahren zum betreiben desselben |
| NL1014253C2 (nl) * | 2000-02-01 | 2001-08-02 | Holmatro Ind Equip | Hydraulisch gereedschap. |
| EP1157786B1 (de) * | 2000-05-25 | 2006-12-13 | Von Arx Ag | Presswerkzeug für die Verpressung von Kupplungselementen |
| US6453719B1 (en) * | 2000-07-28 | 2002-09-24 | Fci Usa, Inc. | Hydraulic tool with forward surrounding reservoir |
| DE10124265B4 (de) * | 2001-05-18 | 2015-10-29 | Gustav Klauke Gmbh | Pumpe |
| US6446482B1 (en) * | 2001-09-17 | 2002-09-10 | Fci Americas Technology, Inc. | Battery operated hydraulic compression tool with rapid ram advance |
| JP2004082273A (ja) * | 2002-08-27 | 2004-03-18 | Izumi Products Co | 天井枠分離工具 |
-
2004
- 2004-10-12 AT AT04761960T patent/ATE368551T1/de not_active IP Right Cessation
- 2004-10-12 ES ES04761960T patent/ES2291911T3/es not_active Expired - Lifetime
- 2004-10-12 EP EP04761960A patent/EP1689563B1/de not_active Expired - Lifetime
- 2004-10-12 CN CNB2004800358529A patent/CN100423902C/zh not_active Expired - Fee Related
- 2004-10-12 WO PCT/CH2004/000620 patent/WO2005053909A1/de not_active Ceased
- 2004-10-12 US US10/581,390 patent/US20070271992A1/en not_active Abandoned
- 2004-10-12 DE DE502004004533T patent/DE502004004533D1/de not_active Expired - Lifetime
- 2004-10-12 JP JP2006541777A patent/JP2007512967A/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005053909A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2135709A2 (de) | 2008-06-18 | 2009-12-23 | Von Arx AG | Elektrisch betriebenes Presswerkzeuggerät |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1689563B1 (de) | 2007-08-01 |
| JP2007512967A (ja) | 2007-05-24 |
| US20070271992A1 (en) | 2007-11-29 |
| CN100423902C (zh) | 2008-10-08 |
| DE502004004533D1 (de) | 2007-09-13 |
| ATE368551T1 (de) | 2007-08-15 |
| ES2291911T3 (es) | 2008-03-01 |
| CN1890058A (zh) | 2007-01-03 |
| WO2005053909A1 (de) | 2005-06-16 |
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