DE2341581A1 - Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices - Google Patents

Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices

Info

Publication number
DE2341581A1
DE2341581A1 DE19732341581 DE2341581A DE2341581A1 DE 2341581 A1 DE2341581 A1 DE 2341581A1 DE 19732341581 DE19732341581 DE 19732341581 DE 2341581 A DE2341581 A DE 2341581A DE 2341581 A1 DE2341581 A1 DE 2341581A1
Authority
DE
Germany
Prior art keywords
tool
signal
pneumatically operated
injection moulding
movement control
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.)
Pending
Application number
DE19732341581
Other languages
German (de)
Inventor
Hans Gumbert
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.)
Philips Intellectual Property and Standards GmbH
Original Assignee
Philips Patentverwaltung GmbH
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 Philips Patentverwaltung GmbH filed Critical Philips Patentverwaltung GmbH
Priority to DE19732341581 priority Critical patent/DE2341581A1/en
Publication of DE2341581A1 publication Critical patent/DE2341581A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/80—Measuring, controlling or regulating of relative position of mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/84—Safety devices
    • B29C45/844—Preventing damage caused by obstructions or foreign matter caught between mould halves during mould closing, e.g. moulded parts or runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/285—Arrangements for preventing distortion of, or damage to, presses or parts thereof preventing a full press stroke if there is an obstruction in the working area

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

A pneumatically operated calibrated nozzle gives a signal as one part of a tool approaches another party by a predetermined distance, whereby the tool control mechanism may be adjusted to a further approach of the parts. The claimed arrangement is said to be insensitive to vibration and can sense e.g. any residual material left over in the tool from previous moulding cycles which may damage the machine if moulding continues unchecked. A further calibrated nozzle may be provided which gives a signal when the tool parts are not sufficiently close to each other, the machine being stopped.

Description

PHILIPS PATENTVERWALTUNG GMBH., 2 HAMIIRG 1, STEINDAMM 94PHILIPS PATENTVERWALTUNG GMBH., 2 HAMIIRG 1, STEINDAMM 94

"Vorrichtung zur Überwachung der Werkzeugbewegungen an"Device for monitoring tool movements

Arbeitsmaschinen"Working machines "

Die Erfindung bezieht sich auf eine Vorrichtung zur Überwachung der Werkzeugbewegungen an Arbeitsmaschinen mit Hilfe von pneumatischen Meßdüsen.The invention relates to a device for monitoring tool movements on work machines with the aid of pneumatic measuring nozzles.

Es ist bekannt, daß Reste von Formteilen, die während des Arbeitens zwischen Stempel und Matrize einer Werkzeugmaschine gelangen, das Werkzeug zerstören. Tritt ein solcher Fall ein, dann entstehen Unkosten, die je nach der Kompliziertheit des Spritzguß- oder Stanzwerkzeuges recht erheblich sind.It is known that residues of molded parts, which during work between the punch and die of a machine tool destroy the tool. If such a case occurs, costs arise which depend on the complexity of the Injection molding or punching tool are quite significant.

Es sind Überwachungsvorrichtungen bekannt, die eine Zerstörung des Werkzeuges verhindern sollen. Das Werkzeug wird dabei mitMonitoring devices are known which are intended to prevent the tool from being destroyed. The tool comes with

PHD 73-155 (PVE H/115) _ 2 -PHD 73-155 (PVE H / 115) _ 2 -

509809/0558509809/0558

Hilfe von Mikroschaltern auf das Vorliegen von Fremdkörpern abgetastet. Diese Mikroschalter sind aber erschütterungsempfindlich und rufen deshalb häufig Fehlschaltungen hervor.Using microswitches for the presence of foreign objects scanned. However, these microswitches are sensitive to vibrations and therefore often cause incorrect switching.

Es ist Aufgabe der Erfindung, eine Vorrichtung zur Überwachung der Werkzeugbewegung an Arbeitsmaschinen zu schaffen, die erschütterungsunempfindlich ist.The object of the invention is to create a device for monitoring the tool movement on work machines that is insensitive to vibrations is.

Die gestellte Aufgabe ist bei einer Vorrichtung der eingangs erwähnten Art gemäß der Erfindung dadurch gelöst, daß eine pneumatische Meßdüse beim Annähern eines Wer'kzeugteils an ein anderes Teil von einer vorgegebenen Annäherung an ein Signal abgibt, durch welches die Werkzeugsteuerung auf weitere Annäherung der Teile schaltbar ist.The object is achieved in a device of the type mentioned according to the invention in that a Pneumatic measuring nozzle when a tool part approaches another part from a predetermined approach to a signal outputs, through which the tool control can be switched to further approach of the parts.

Die elektrischen Schaltgeräte können bei diesem Aufbau außerhalb der Erschütterungszone liegen, und es ist damit dann eine Höchstschaltsicherheit gewährleistet.With this structure, the electrical switching devices can lie outside the shock zone, and that's it then a maximum switching security is guaranteed.

Die Erfindung wird anhand des in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained in more detail using the exemplary embodiment shown in the drawing.

Zwei Formhälften 1, 3 eines Kunststoffspritzwerkzeuges müssen sich, um einen einwandfreien Spritzvorgang zu gewährleisten, dicht aufeinanderlegen. Dies kann jedoch durch Reste aus vorhergehenden Spritzvorgängen verhindert werden. Um nun zu über-Two mold halves 1, 3 of a plastic injection molding tool must Lay them tightly on top of each other in order to ensure a perfect spraying process. However, this can be due to remnants from previous Spraying processes can be prevented. In order to now

- 3 -509809/0558- 3 -509809/0558

_ 3 —_ 3 -

wachen, daß sich die Forinhälften 1 und 3 aufeinanderlegen, ist an der Formhälfte 1 eine pneumatische Meßdüse 5 vorgesehen,die mit einem Meßschalter 7 verbunden ist. Durch die Meßdüse 5 strömt ständig Luft ab. Nähert sich die Meßdüse jedoch einer Meßfläche 9 an der Formhälfte 3» dann tritt über die Düse 5 ein Rückstau in der Leitung 11 auf. Die Meßdüse 5 ist dabei so angeordnet, daß sich ein Rückstau ergibt, wenn die Meßdüse auf einen Abstand von 0,1 mm oder weniger an die Meßfläche 9 herangeführt wurde. Der Rückstau führt zu einem Signal am Schalter 7, wodurch dieser geschlossen wird. Durch das Schließen des Schalters 7 wird ein Relais 13 betätigt, welches die Pressensteuerung 15 beeinflußt.make sure that forin halves 1 and 3 lie on top of each other, a pneumatic measuring nozzle 5 is provided on the mold half 1, which is connected to a measuring switch 7. Air flows continuously through the measuring nozzle 5. The measuring nozzle approaches however, a measuring surface 9 on the mold half 3 »then occurs A back pressure in the line 11 via the nozzle 5. The measuring nozzle 5 is arranged so that there is a back pressure, when the measuring nozzle has been brought up to a distance of 0.1 mm or less from the measuring surface 9. The backwater leads to a signal at switch 7, whereby it is closed. By closing the switch 7, a relay 13 is actuated, which affects the press control 15.

Nach dem Aufeinanderzufahren der Formhälften 1 und 3 fahren diese weiter nieder in Richtung auf eine Stempelplatte 17. An dieser Stempelplatte 17 befindet sich ein Halter 19 für einen an einer Stange 21 angeordneten Teller 23. Der Teller 23 und die Stange 21 werden über eine Feder 25 um einen gewissen Betrag nach oben geschoben, und zwar gegen eine am Formteil 3 angeordnete Meßdüse 27. Wenn die Meßdüse 27 von dem Teller 23 bei einer Annäherung auf wenigstens 0,1 mm abgedeckt wird, wird ein Meßschalter 29 geöffnet, der den Steuerkreis des Relais 13 unterbricht. Die Presse wird damit gestoppt oder auf Rücklauf geschaltet. Liegen jedoch beide Formhälften schon aufeinander, dann wird nur das Signal über die Leitung 11 auf den Schalter 7 übertragen, der geschlossen wird. Das anschließende öffnen des Schalters 29 hat dann keinen Einfluß mehr auf die Pressensteuerung 15.After the mold halves 1 and 3 have moved towards one another, they move further down in the direction of a stamp plate 17. A holder 19 for a plate 23 arranged on a rod 21 is located on this stamp plate 17 pushed up by a certain amount against a measuring nozzle 27 arranged on the molded part 3. When the measuring nozzle 27 is covered by the plate 23 when approaching at least 0.1 mm, a measuring switch 29 is opened, which controls the control circuit of the relay 13 interrupts. The press is then stopped or switched to reverse. However, if both mold halves are already lying on top of one another, then only the signal is transmitted via line 11 to switch 7, which is closed. The subsequent opening of the switch 29 then no longer has any influence on the press control 15.

Patentansprüche:Patent claims:

509809/0558509809/0558

Claims (2)

j Ij I 1 I1 I. Patentansprüche:Patent claims: f1.jVorrichtung zur Überwachung der Werkzeugbewegungen an Arbeitsmaschinen mit Hilfe von pneumatischen Meßdüsen, dadurch gekennzeichnet, daß eine pneumatische Meßdüse (5) beim Annähern eines Werkzeugteils (1) an ein anderes Teil (3) von einer vorgegebenen Annäherung an ein Signal abgibt, durch welches die Werkzeugsteuerung (15) auf weitere Annäherung der Teile schaltbar ist. f 1.j device for monitoring the tool movements on machines with the aid of pneumatic measuring nozzles, characterized in that a pneumatic measuring nozzle (5) emits a signal when a tool part (1) approaches another part (3) from a predetermined approach to a signal which the tool control (15) can be switched to further approach the parts. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine weitere Meßdüse (27) vorgesehen ist, welche dann, wenn die Werkzeugteile nicht ausreichend nahe angenähert sind, ein Signal abgibt, das die Arbeitsbewegung der Arbeitsmaschine abstoppt.2. Apparatus according to claim 1, characterized in that a further measuring nozzle (27) is provided, which then, if the tool parts are not approximated sufficiently close, emits a signal that the working movement of the work machine stops. 509809/0558509809/0558
DE19732341581 1973-08-17 1973-08-17 Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices Pending DE2341581A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19732341581 DE2341581A1 (en) 1973-08-17 1973-08-17 Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732341581 DE2341581A1 (en) 1973-08-17 1973-08-17 Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices

Publications (1)

Publication Number Publication Date
DE2341581A1 true DE2341581A1 (en) 1975-02-27

Family

ID=5889998

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732341581 Pending DE2341581A1 (en) 1973-08-17 1973-08-17 Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices

Country Status (1)

Country Link
DE (1) DE2341581A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419390A1 (en) * 1974-04-23 1975-11-06 Smg Sueddeutsche Maschinenbau TOOL BREAKAGE PROTECTION
DE3418108A1 (en) * 1984-05-16 1985-11-21 Rainer Dipl.-Ing. 7000 Stuttgart Brockmann Machine tool with safety device
EP0170734A2 (en) * 1982-08-11 1986-02-12 Hull Corporation A system for detecting solid obstacles between confronting surfaces of pressure plates
DE3841327A1 (en) * 1988-12-08 1990-06-13 Krupp Maschinentechnik DEVICE FOR DETERMINING THE DISTANCE BETWEEN TWO AREAS RELATED TO THE UPPER RELATIONSHIP WITH THE LOWER SHAPE OF A PRESS TOOL
JP2013226674A (en) * 2012-04-24 2013-11-07 Murata Machinery Ltd Position detection apparatus of mold

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419390A1 (en) * 1974-04-23 1975-11-06 Smg Sueddeutsche Maschinenbau TOOL BREAKAGE PROTECTION
EP0170734A2 (en) * 1982-08-11 1986-02-12 Hull Corporation A system for detecting solid obstacles between confronting surfaces of pressure plates
EP0170734A3 (en) * 1982-08-11 1986-07-30 Hull Corporation A system for detecting solid obstacles between confronting surfaces of pressure plates
DE3418108A1 (en) * 1984-05-16 1985-11-21 Rainer Dipl.-Ing. 7000 Stuttgart Brockmann Machine tool with safety device
DE3841327A1 (en) * 1988-12-08 1990-06-13 Krupp Maschinentechnik DEVICE FOR DETERMINING THE DISTANCE BETWEEN TWO AREAS RELATED TO THE UPPER RELATIONSHIP WITH THE LOWER SHAPE OF A PRESS TOOL
US5014546A (en) * 1988-12-08 1991-05-14 Krupp Maschinentechnik Gesellschaft Mit Beschrankter Haftung Apparatus for determining the distance between a pair of surfaces in communication with upper and lower mold halves in a press
JP2013226674A (en) * 2012-04-24 2013-11-07 Murata Machinery Ltd Position detection apparatus of mold

Similar Documents

Publication Publication Date Title
EP0403040A2 (en) Method and apparatus for making dimensionally stable pressed articles
AT14535U1 (en) Device for detecting the collision of machine parts
DE2341581A1 (en) Tool movement control e.g. in injection moulding machines - using pneumatically operated calibrated nozzles or metering orifices
EP0096183B1 (en) Method of protecting the moulds during injection moulding
EP0158031B1 (en) Device for the protection of the moulds of an injection-moulding machine for injection moulding of plastic materials during the closing of the moulds
DE10200732B4 (en) Safety device for a press brake
DE3136419C2 (en)
EP0655315B1 (en) Method of controlling the mould pressure for air-pressure moulding of an article made out of a thermoplastic sheet and apparatus for carrying out that process
EP0326031A1 (en) Method of and apparatus for the quality control of mouldings produced by injection moulding machines or die casting machines
DE3336258A1 (en) Injection or compression mould for processing plastics materials
DE102019102246A1 (en) Method and device for injection molding plastic materials
EP1022113A2 (en) Feeding unit for a welding apparatus, in particular for an ultrasonic welding apparatus
EP3486054B1 (en) Roofing tile device and method for operating same
DE102004038922A1 (en) Method for joining plates through clinching involves working stroke by means of punch and die with movable die part which is moved sidewise whereby tool and outer diameter of point of joining is controlled during joining process
DE2908172A1 (en) Hydraulic tool for adjusting automobile door frames - has in-built hydraulic circuit to control amount of permanent stretch of bodywork material
DE2925902A1 (en) Control signal generator for machine pressure - compares detected motion of pressure hammer with preselected signals via comparators
DE946967C (en) Device for ejecting moldings from molds
DE2407225A1 (en) METHOD AND DEVICE FOR AUTOMATIC PROCESS MONITORING
EP1371472A1 (en) Injection compression moulding apparatus and process and product produced thereby
EP0396942B1 (en) Method for cleaning spacer elements of moulding presses for curable plastics and press comprising a cleaning arrangement for realizing this method
DE2101883A1 (en) Molding press
DE4232533C2 (en) Device for generating the nozzle contact force, with which a nozzle of a plasticizing and injection unit driven by a spindle drive abuts against the mold half clamped on the fixed platen
DD286541A5 (en) TOOL FOR DESIGNING REVERSED RUBBER PARTS
DE9001594U1 (en) Safety shutdown device for punching machines
DE2020053A1 (en) Thermoplastic resin injection moulding machine control device

Legal Events

Date Code Title Description
OHW Rejection