WO2001094047A1 - Verfahren zum betreiben einer werkstücktransportvorrichtung für eine pressenanlage - Google Patents
Verfahren zum betreiben einer werkstücktransportvorrichtung für eine pressenanlage Download PDFInfo
- Publication number
- WO2001094047A1 WO2001094047A1 PCT/EP2001/006253 EP0106253W WO0194047A1 WO 2001094047 A1 WO2001094047 A1 WO 2001094047A1 EP 0106253 W EP0106253 W EP 0106253W WO 0194047 A1 WO0194047 A1 WO 0194047A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- workpiece transport
- drive device
- braking
- press system
- torque
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
Definitions
- the invention relates to a method for operating a workpiece transport device for a press system according to the type defined in more detail in the preamble of claim 1. Furthermore, the invention relates to a device for carrying out the method.
- braking devices used there serve to avoid the risk arising from the positional energy of raised parts of such devices or the energy of the weight compensation due to a possible movement of the parts downwards or upwards at the time when the press system is not working.
- Such devices also known as holding brakes, have friction linings which are designed in such a way that they can only carry out a limited number of service brakes, ie braking from movement, since they are not designed for this purpose.
- Can drive stunts such loading for example by clamping ⁇ voltage failure or erroneous switching during the Commissioning may be necessary.
- mechanical holding devices are also used in a likewise general prior art, which have a positive connection to the respective device part.
- these are relatively expensive to manufacture, have to be adapted separately for each device and therefore cause relatively high costs.
- the braking devices normally used, described above, on the other hand, are standard parts, which results in relatively low costs and very low installation costs.
- a further advantage of the known braking devices is the lower braking torque required, since the drive is usually reduced and the torque is increased after the braking device.
- the brake device by applying a predetermined torque with the aid of the drive device, it is checked whether the brake device is still functioning, so that it is possible not to start the method for operating the workpiece transport device for the press system when the torque applied by the drive device is the maximum holding torque of the brake device exceeds.
- the predetermined torque applied by the drive device lies in a range which is slightly lower than the torque to be applied by the brake device, the torque applied by the mass of the workpiece and the workpiece transport device naturally having to be taken into account.
- Another advantage of the method according to the invention is that no additional hardware is required is required because standard parts can be used. This advantageously does not result in an increase in the moment of inertia.
- a possibility of carrying out the test procedure of the braking device is when the predetermined torque is applied by the drive device when the press system is switched off. This does not represent any loss of time in the operation of the press system and a safe operation of the braking device is guaranteed each time the press system is switched on again.
- the predetermined torque can alternatively be applied manually by an operator when the press system is switched on or at any time when the press system is at a standstill.
- the braking torque of the braking device is too low, appropriate measures for personal safety can be taken, i.e. the workpiece transport device and / or the press system can then be switched off.
- a device for performing the method according to the invention is specified in claim 9.
- the single figure shows a schematic representation of a workpiece transport device for a press system with which the method according to the invention can be carried out.
- a device 1 for transporting workpieces 2 within a press system which is not shown but is known per se, has a belt drive 3 which is driven by a drive device, in the present case by an electric motor 5, via a transmission 4.
- a drive device in the present case by an electric motor 5, via a transmission 4.
- the transmission 4 and the electric motor 5, other devices are of course also conceivable, which are used in known workpiece transport devices 1 for press systems.
- a weight compensation device 6 which is pneumatically operated and known per se, engages the belt drive 3 on.
- a braking device 8 also acts on an output shaft 7 of the electric motor 5.
- the braking device 8 engage at any other point within the workpiece transport device 1 at which it is able to prevent unwanted movement of the workpiece 2.
- the braking device 8 has at least one, in the present case, however, two friction linings 9, but in the present case is designed as a pure holding brake or static brake, ie the friction linings 9 are designed so that they only brake the workpiece 2 in an emergency, that is, braking from the movement of the workpiece 2, can be used and are subject to relatively high wear in such service braking.
- the holding torque is applied to the braking device 8 by spring force and the braking device 8 can be ventilated electrically or hydraulically.
- a service brake as a braking device 8 would also be conceivable.
- An encoder or displacement sensor 10 is connected to the output shaft 7 of the electric motor 5 and transmits the respective position of the output shaft 7 and thus of the workpiece 2 as an electrical pulse to a control device 11.
- the control device 11 is in turn connected to a current generator or converter 12, which supplies the electric motor 5 with a specific current intensity and thus controls its drive power and thus the distance traveled by the workpiece 2 and its speed.
- the displacement sensor 10, the control device 11 and the current transmitter 12 are of known construction and mode of operation, which are known to a person skilled in the relevant field, and are therefore not to be explained in more detail below.
- the braking device 8 Whenever the workpiece transport device 1 comes to a standstill, ie the friction linings 9 engage on the output shaft 7 and prevent movement of the same, and thus movement of the workpiece 2. Since the necessary holding torque from the braking device 8 may not occur if the friction linings 9 wear more can be applied, the function of the braking device 8 is checked by applying a predetermined torque by the electric motor 5. This can be carried out cyclically, for example each time the workpiece transport device 1 or the press system is switched off or on, but of course also manually at any other times at a standstill, for example as part of a service interval, by an operator.
- the electric motor 5 is thus acted upon by the current transmitter 12 with a specific current I when the braking device 8 is closed, which current I corresponds, for example, to a torque of 80% of the holding torque of the braking device 8.
- current I corresponds, for example, to a torque of 80% of the holding torque of the braking device 8.
- the torque applied by the electric motor 5 thus counteracts the weight of the workpiece transport device 1 or the workpiece 2 and lies in a range which is slightly lower than the holding torque which can be applied by the braking device 8.
- This test procedure ensures at all times during operation of the workpiece transport device 1 that the braking device 8 can apply the necessary holding torque.
- the torque applied by the drive device 5 exceeds the possible holding torque of the braking device 8
- the workpiece transport device 1 or the press system is switched off immediately, as described above, and potential accidents by repairing the braking device 8 can be avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Braking Arrangements (AREA)
- Control Of Conveyors (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0111417-4A BR0111417A (pt) | 2000-06-07 | 2001-06-01 | Processo para a operação de uma instalação de transporte para peças a serem trabalhadas para uma instalação de prensas |
EP01957820A EP1292406A1 (de) | 2000-06-07 | 2001-06-01 | Verfahren zum betreiben einer werkstücktransportvorrichtung für eine pressenanlage |
CA002407289A CA2407289A1 (en) | 2000-06-07 | 2001-06-01 | Process for driving a workpiece transport system for a press arrangement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10028147.8 | 2000-06-07 | ||
DE10028147A DE10028147B4 (de) | 2000-06-07 | 2000-06-07 | Verfahren und Vorrichtung zum Betreiben einer Werkstücktransportvorrichtung für eine Pressenanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001094047A1 true WO2001094047A1 (de) | 2001-12-13 |
Family
ID=7644967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/006253 WO2001094047A1 (de) | 2000-06-07 | 2001-06-01 | Verfahren zum betreiben einer werkstücktransportvorrichtung für eine pressenanlage |
Country Status (7)
Country | Link |
---|---|
US (1) | US6557463B2 (de) |
EP (1) | EP1292406A1 (de) |
KR (1) | KR20030007891A (de) |
BR (1) | BR0111417A (de) |
CA (1) | CA2407289A1 (de) |
DE (1) | DE10028147B4 (de) |
WO (1) | WO2001094047A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10234072B4 (de) * | 2002-07-26 | 2005-03-31 | Müller Weingarten AG | Stufenlose Verriegelungsvorrichtung für Werkstücktransportsysteme in Pressen |
DE10310925B3 (de) * | 2003-03-13 | 2004-11-04 | Müller Weingarten AG | Sicherheitsvorrichtung für das Werkstücktransportsystem in einer Presse |
DE102004024770B4 (de) * | 2003-05-15 | 2015-02-26 | Tox Pressotechnik Gmbh & Co. Kg | Sicherheitsprüfung von Maschinenbremsen |
DE10349758B3 (de) * | 2003-10-24 | 2005-06-09 | Schuler Pressen Gmbh & Co. Kg | Antriebseinrichtung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2606646A1 (de) * | 1976-02-19 | 1977-09-01 | Komatsu Maypres Gmbh | Presse mit umlaufender antriebswelle |
DE2619716A1 (de) * | 1976-05-04 | 1977-11-17 | Schuler Gmbh L | Vorschubvorrichtung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE504479A (de) * | 1951-04-28 | |||
US5329415A (en) * | 1991-04-26 | 1994-07-12 | Aida Engineering Ltd. | Clutch-brake drive control for press machine |
JPH0775900A (ja) * | 1993-03-23 | 1995-03-20 | Bruderer Ag | プレスの油圧制御方法及び該方法を実施するための制御装置を備えたプレス |
DE9417269U1 (de) * | 1994-10-31 | 1995-02-09 | Sudhop Helmut Dipl Ing | Gerät zur Prüfung und Überwachung mechanischer Bremsen |
-
2000
- 2000-06-07 DE DE10028147A patent/DE10028147B4/de not_active Expired - Fee Related
-
2001
- 2001-06-01 KR KR1020027016626A patent/KR20030007891A/ko not_active Application Discontinuation
- 2001-06-01 BR BR0111417-4A patent/BR0111417A/pt not_active Application Discontinuation
- 2001-06-01 WO PCT/EP2001/006253 patent/WO2001094047A1/de not_active Application Discontinuation
- 2001-06-01 CA CA002407289A patent/CA2407289A1/en not_active Abandoned
- 2001-06-01 EP EP01957820A patent/EP1292406A1/de not_active Withdrawn
- 2001-06-07 US US09/875,251 patent/US6557463B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2606646A1 (de) * | 1976-02-19 | 1977-09-01 | Komatsu Maypres Gmbh | Presse mit umlaufender antriebswelle |
DE2619716A1 (de) * | 1976-05-04 | 1977-11-17 | Schuler Gmbh L | Vorschubvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
US6557463B2 (en) | 2003-05-06 |
KR20030007891A (ko) | 2003-01-23 |
CA2407289A1 (en) | 2002-10-22 |
DE10028147A1 (de) | 2001-12-20 |
US20020020306A1 (en) | 2002-02-21 |
DE10028147B4 (de) | 2004-12-02 |
BR0111417A (pt) | 2003-06-10 |
EP1292406A1 (de) | 2003-03-19 |
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