WO2000035655A1 - Dispositif de reglage et de regulation pour un canal chaud ou froid d'un outil de moulage de matiere plastique - Google Patents

Dispositif de reglage et de regulation pour un canal chaud ou froid d'un outil de moulage de matiere plastique Download PDF

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Publication number
WO2000035655A1
WO2000035655A1 PCT/DE1999/000835 DE9900835W WO0035655A1 WO 2000035655 A1 WO2000035655 A1 WO 2000035655A1 DE 9900835 W DE9900835 W DE 9900835W WO 0035655 A1 WO0035655 A1 WO 0035655A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
nut
channel
regulating device
actuating
Prior art date
Application number
PCT/DE1999/000835
Other languages
German (de)
English (en)
Inventor
Hansjürgen Möser
Original Assignee
Moeser Hansjuergen
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 Moeser Hansjuergen filed Critical Moeser Hansjuergen
Priority to AU41300/99A priority Critical patent/AU4130099A/en
Publication of WO2000035655A1 publication Critical patent/WO2000035655A1/fr

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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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • 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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • B29C2045/0032—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks sequential injection from multiple gates, e.g. to avoid weld lines
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C2045/2722—Nozzles or runner channels provided with a pressure sensor
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • B29C2045/2813—Common drive means for several needle valves
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • B29C2045/282—Needle valves driven by screw and nut means
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2865—Closure devices therefor consisting of needle valve systems having position detecting means
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2875—Preventing rotation of the needle valve
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2886—Closure devices therefor consisting of needle valve systems closing at a distance from the gate
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2893—Multiple coaxial needle valves
    • 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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29C45/26—Moulds
    • B29C45/2673—Moulds with exchangeable mould parts, e.g. cassette moulds
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2756—Cold runner channels
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/5675—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding for making orifices in or through the moulded article
    • 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
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins

Definitions

  • the invention relates to an adjusting and regulating device for at least one hot or cold channel connected to a mold cavity of a plastic molding tool, a needle element being provided in the at least one channel and being longitudinally adjustable in the channel by means of a drive device.
  • hydraulic cylinders have a leak-sensitive structure. That excludes the use of such
  • Hydraulic cylinder as a drive device for the needle element in clean rooms largely because of such leaks oil mist or the like. can hardly be avoided.
  • Hydraulic cylinders as drive devices also require a complicated distributor-channel balancing of the hydraulic mechanism, in particular in the case of plastic molds with a plurality of mold cavities, in order to achieve the same closure reaction times in the various mold cavities.
  • Needle elements consist in the relatively large space requirement for the hydraulic cylinders as well as in the complex distribution channel and hose connection system to be vented.
  • Pneumatic cylinder as a drive device for the
  • Needle element of a hot or cold runner of a plastic molding tool have a relatively large area in order to achieve a corresponding effective area.
  • pneumatic cylinders are powerless due to their working medium.
  • the pneumatic working medium which is, for example, compressed air
  • the shutter speeds and the effects of the needle element are uneven, inaccurate and uncontrolled.
  • pneumatic cylinders as drive devices for the needle element are only suitable for cleaning to a limited extent.
  • Push wedge translation mechanisms have a complex structure and are therefore difficult to manufacture. They also require large installation spaces and massive external driving sliding components such as pneumatic or
  • Tooth segment swivel levers require a large amount of space because the entire swivel and
  • Hot runner nozzles with spring-loaded needle elements have the defect that the functional processes are virtually uncontrolled due to the pressure build-up of the liquid plastic.
  • the invention has for its object to provide an adjusting and regulating device of the type mentioned, the above-mentioned shortcomings are eliminated in a structurally simple manner.
  • the needle element is fastened to a screw spindle secured against rotation, which is screwed into a rotatably mounted nut element secured against axial movement, and in that the nut element for the axial adjustment of the needle element by means of the screw spindle can be driven in rotation by the drive device is.
  • the object on which the invention is based can also be achieved according to the invention in that the needle element is firmly connected to a screw spindle which is screwed into a nut element fixed to the tool, and in that the screw spindle for the axial adjustment of the needle element by means of the screw spindle can be driven in rotation by the drive device.
  • the needle element While in the first-mentioned embodiment according to the invention the needle element is prevented from rotating about its longitudinal axis during its axial adjustment by the drive device, the needle element in its second embodiment according to the invention guides it
  • the invention has the advantage that the control and regulating unit is very small with the highest counterpressure performance with regard to injection pressure and with regard to a holding pressure due to the translating geometry of the screw spindle, such as the pitch geometry of the screw spindle. In the rest position or during the injection process of the plastic, almost no or no counterforce is required if the needle element is combined with a self-locking screw spindle, for example. Such a self-locking design advantageously results in energy savings and also a substantial reduction in wear.
  • the nut element can have a worm wheel which meshes with a worm which is connected to the drive device.
  • the worm wheel and the worm meshing with the worm wheel can also be dimensioned in a self-locking manner, which leads to a corresponding energy saving and wear reduction, as was mentioned above in connection with a self-locking screw spindle.
  • two channels with needle elements can be provided closely adjacent to one another, the two screw spindles and the associated nut element having mutually opposite screw spirals, and between the two nut elements a worm can be provided which meshes with the worm wheels of the two nut elements.
  • the nut element can also have a gearwheel which meshes with a drive element which is connected to the drive device.
  • This drive element can be, for example, a drive gear, a rack or the like. act.
  • at least two channels with needle elements can be provided closely adjacent to one another, the respectively adjacent screw spindles and the associated nut elements having opposite screw spirals, and the gears of the respectively adjacent nut elements meshing with one another.
  • Such an embodiment of the last-mentioned type has the advantage that not only two but any number of channels with needle elements can be arranged and driven closely next to one another with a single drive element, the cavity distances between the mold cavities, ie the cavities, being very small can.
  • Compression space is formed, and when the needle element has a central shut-off needle and a sleeve-shaped compression needle surrounding the shut-off needle, which are longitudinally adjustable independently of one another by the drive device.
  • the lower adjusting mechanism can be activated for normal injection from a certain point in order to extremely increase the injection pressure and the injection speed.
  • the translation of the screw spindle enables significantly higher pressure values and speeds due to the compression space in the hot runner nozzle. With that are in advantageously produce plastic objects with extreme flow paths.
  • the upper adjusting mechanism traveling in parallel with the lower adjusting mechanism closes the after the lower adjusting mechanism has been stopped, ie after the compression needle has been stopped
  • the channel it is also possible for the channel to be formed with a compression space and for the needle element to have a number of locking needles which extend through a common compression needle, the compression needle and the locking needles being independently adjustable in length by the drive device.
  • micro parts with small gates i.e. can be realized with miniature mold nesting surfaces.
  • the injection pressure and the injection speed can be increased extremely.
  • the channel can have at least one
  • the drive device preferably has a drive motor which is connected to an evaluation and control electronics device.
  • a pressure sensor can be provided in the mold cavity and / or in the mold channel, which is connected to the evaluation and control electronics device.
  • the drive motor can be, for example, an electrical stepper or servo motor with internal sensors such as a rotary encoder or the like. act.
  • Such an electromechanical drive which acts positively on a screw spindle of the needle element, enables one extremely precise and very fast adjustment of the needle element.
  • Another advantage of such an electro-mechanical drive is that it can also be used in a clean room without any problems.
  • the needle element it is advantageously possible to be able to adjust the needle element continuously, it also being possible to stop the needle element in a defined manner in any desired position. Furthermore, defined acceleration and deceleration phases are possible, for example to protect the tool or the needle element accordingly.
  • the invention is for all hot runners and cold runners and for all types of gating, i.e. can also be used with standard sprue systems.
  • the needle elements can be formed from inexpensive standard parts; if necessary, they can be exchanged or adjusted easily and in a time-saving manner without dismantling the entire molding tool. If necessary, the position of the needle element can be adjusted or checked, for example, using a heat-resistant microswitch.
  • the system according to the invention can advantageously be used even at very high tool temperatures, since only metallic materials are used. An inexpensive system can be realized if the respective screw spindle is made of a wear-resistant and heat-resistant plastic.
  • a defined asymmetrical filling of the Mold cavity are carried out with the plastic material, for example, to steer the flow or weld lines in special areas of the mold cavity.
  • static and / or optical improvements to the products, ie, for example, of large plastic parts are possible.
  • the adjusting mechanism according to the invention can also be used, for example, for temporarily locking a channel arm, e.g. with combination tools, only fill a certain area with plastic.
  • a channel arm e.g. with combination tools
  • the actuating and regulating device according to the invention advantageously not only enables the highest pressure outputs and fastest movements of the needle elements with the smallest sizes of the components to be manufactured, but also the use of a standardized pressure sensor system in combination with the evaluation and
  • Control electronics device According to the invention, this regulation allows each individual mold cavity to be optimized in relation to the injection speed, injection pressure and holding pressure and in relation to the relevant operating times in the context of the existing injection molding machine - at the latest in the subsequent production cycle - according to the detectable or recorded specifications.
  • the invention is in can advantageously be used equally well in mass injection molding and high-precision injection molding.
  • FIG. 1 shows a first embodiment of the device in sections in a sectional view, the needle element assuming the closed position
  • FIG. 2 shows the design according to FIG. 1, the needle element being in the open position
  • FIG. 3 shows a section along the section line III-III in FIG. 2,
  • FIGS. 1 to 3 shows a detail of the design according to FIGS. 1 to 3 to illustrate two microswitches interacting with the needle element
  • Fig. 5 shows a second embodiment of the device in
  • FIG. 6 is an enlarged view of a portion of a needle element in the associated channel to illustrate cross-sectional changes between them
  • 7 is a detail view similar to FIG. 6, the plastic flow brake formed by cross-sectional changes of the needle element and associated channel being designed differently
  • FIG. 10 shows the configuration according to FIG. 9 in the open position of the double needle
  • Fig. 11 is a plastic mold with two
  • FIG. 13 shows a representation similar to FIG. 12 of two needle elements which are driven by means of a common worm
  • 14 is a representation similar to FIGS. 12 and 13 of an embodiment of a needle element, on which a screw spindle is fixed, which extends through a nut element fixed to the tool
  • 16 is a sectional view of an embodiment with a needle element that forms a cross-sectional brake on the left and a closure in the one, indirectly acting pressure sensor on the right side,
  • 17a a stepper motor with secondary elements, which is operatively connected to a screw, with a direct control command from the injection molding machine,
  • FIG. 18 shows an embodiment with a pressure sensor which is provided in a transition cone of a hot runner system
  • 19 is a view similar to FIG. 18, but the pressure sensor is provided in the mold cavity
  • Fig. 21 shows a needle element with an attached thereto
  • FIG. 22 shows an inexpensive embodiment of a regulated hot runner with a pressure sensor in the hot runner nozzle
  • Fig. 1 shows an injection molded part 1 between a mold insert 2 and a mold insert 3, which are clamped and held between two mold plates 4 and 5.
  • a spacer plate 6 is pressed against the mold plate 4 and bears against a clamping plate 7.
  • the platen 7 is covered by an insulating plate 8.
  • the insulating plate 8 is used for thermal insulation.
  • a hot runner nozzle 9 is assigned to the mold insert 2 and has a hot runner 9a.
  • the hot runner nozzle 9 is provided on a hot runner manifold block 10.
  • a needle element 14 is arranged in the hot runner 9a.
  • the needle element 14 is fixed in a screw spindle 13.
  • the Screw spindle 13 is screwed into a nut element 16 which is rotatably mounted on the platen 17.
  • the nut element 16 is formed with a worm wheel 16a which meshes with a worm 15.
  • the screw spindle 13 is axially adjustable secured in the clamping plate 7 against rotation.
  • the screw spindle 13 is formed with a head 17 (see also FIG. 3).
  • a cover strip 18 is arranged, which serves as a pressure resistor for the needle element 14.
  • a tuning disc 19 which serves to receive the associated end of the needle element 14.
  • a holding and centering ring 20, which is fastened to the clamping plate 7, serves for the rotatable and axially immovable arrangement of the nut element 16 in the clamping plate 7.
  • the needle element 14 can be removed from the hot runner 9a as desired.
  • the needle element 14 is in the open position, ie the front end of the needle element 14 is at a distance w from the mold cavity la. This is effected by a corresponding drive of the worm 15, whereby the nut element 16 is rotated accordingly and the screw spindle 13 secured against rotation is correspondingly moved axially. This axial movement results in a corresponding axial movement of the needle element 14.
  • FIG. 2 in FIG. 2 denotes the helical pitch of the screw spindle 13 and the nut element 16 - or a ball screw (not shown).
  • Fig. 3 illustrates sections of the needle element 14 with the screw 13 secured against rotation with its head 17, the cover strip 18 and between
  • Head 17 and the cover strip 18 provided tuning disc 19 and the nut element 16 for the screw spindle 13 with the worm wheel 16a for the worm 15 (see FIGS. 1 and 2).
  • the nut element 16 is rotatably and axially immovable by means of the holding and centering ring 20. 3 differs from the embodiment illustrated in FIGS. 1 and 2, in particular in that the nut element 16 is not provided directly and directly on the mounting plate 7, but on a housing body 21 which is provided in the mounting plate 7 so that it can be replaced is.
  • the hot runner distributor block, to which the hot runner nozzle 9 with the hot runner 9a is attached, is also designated in FIG. 3 with the reference number 10.
  • FIG. 4 shows, in a representation similar to FIG. 1, a section of the clamping plate 7 and the insulating plate 8 covering it and between them two microswitches 22 and 23, which form displacement sensors.
  • These microswitches 22 and 23 are designed, for example, with a snap mechanism. If the microswitch 22 is activated, this means, for example, that the needle element 14 is in the closed position, ie that the needle element 14 closes the mold cavity la (see FIGS. 1 and 2). If the microswitch 23 is activated, this means that the needle element 14 is in the extended, ie open, position in which the mold cavity 1 a is fluidly connected to the hot runner 9 a of the hot runner nozzle 9.
  • FIG. 4 The same details are designated in FIG. 4 with the same reference numerals as in FIGS. 1 to 3, so that it is not necessary to describe all of these details again in detail in connection with FIG. 4.
  • FIG. 5 shows an embodiment of the adjusting and regulating device for a needle element 14 of a hot runner nozzle 9, the hot runner 9 a of which opens into a mold cavity 1 a between two mold inserts 2 and 3.
  • the needle element 14 provided in the hot runner 9a has a screw spindle 13.
  • the screw spindle 13 is formed with a head 17 in order to prevent the screw spindle 13 and the needle element 14, which is fixedly connected to the screw spindle 13, from rotating.
  • the screw spindle 13 is screwed into a nut element 16 which is rotatably and axially immovably mounted in a clamping plate 7.
  • the platen 7 with a holding and
  • the nut element 16 is designed with a gear 16b.
  • the gear 16b meshes with distributor gears 24.
  • the first of these distributor gears 24 meshes with a drive gear 25 which is mounted on a needle bearing 26.
  • the drive gear 25 with the needle bearing 26 are in the platen 7 by means of Holding and centering plate 7a rotatable and axially immovable if necessary.
  • An electric servomotor 28 forming a drive device 27 or a hydraulic or a pneumatic motor is used for the rotary drive of the drive gear 25.
  • the servo motor 28 is combined with a gear 29 and with an evaluation sensor system 30.
  • the evaluation sensor 30 has, for example, a rotary encoder known per se.
  • a pressure sensor 31 is screwed into the mold insert 3 and is used to detect the pressure of the plastic material flowing into the mold cavity la.
  • the pressure sensor 31, which is, for example, a piezoceramic pressure sensor, is connected to a socket 32 by means of a connecting line.
  • a plug 33 can be inserted or plugged into the socket 32 and is connected to an evaluation and control electronics device 34 by means of a connecting cable.
  • the evaluation and control electronics device 34 has an input keyboard 34a and displays 34b. In the electronic device 34, the output signals of the pressure sensor 31 are amplified and compared with a characteristic map previously determined and stored in the electronic device 34 via the input keyboard 34a.
  • Differences between the stored characteristic diagram and the output signals of the pressure sensor 31 are evaluated in the electronic device 34 and compared via a connection plug 35 with the position of the evaluation sensor system 30 of the servo motor 28 in order to readjust the servo motor 28 via a plug 28a, ie the needle element 14 is axially closed in this way adjust that the mass flow through the hot runner 9a the hot runner nozzle 9 is influenced into the mold cavity la.
  • the determined characteristic diagram with the associated electronic signals or with the output signals of the pressure sensor 31 can be input from the evaluation and control electronics device 34 via a plug connection 38 and 39 into a data processing system 40a, which is combined with a screen 40.
  • the respective characteristic diagram and the current electronic signals and the difference therefrom can be graphically displayed on the screen 40.
  • an EDP system 40a with a screen 40 using the sensors 31 and 30 described, for example by keying in the map or a respective production-related fixed program, can supplement or replace the special electronics and take over the control of the motor 28.
  • all adjusting mechanisms can be controlled via their power sources directly with the core pulling program of the injection molding machine 37 without any use of optimization devices such as the evaluation and control electronics device 34.
  • the electronic device 34 moves rigidly as a control electronic device with a previously individually determined and calibrated characteristic map in the recurring cycle of the servo motor 28 via the evaluation sensor system 30, or completely without evaluation electronics 34 Adjust the input keyboard 34a in a correspondingly correcting manner to adjust the respective needle element 14 in an axially defined manner or the opening and closing times, ie change the opening or closing of the corresponding mold cavity la defined by the associated needle element 14. These changes can be read in the displays 34b.
  • FIG. 6 shows a detail in a sectional view to illustrate a hot runner nozzle 9 with a hot runner 9a and a needle element 14 provided in the hot runner 9a, the hot runner 9a having a cylindrical gate 9b and a regulating cross-sectional constriction, a further one being added in the mold cavity 2
  • Cross-sectional constriction 9c is located, both of which exert a defined influence on the injection process via the pressure sensor 31 and the evaluation and control electronics device 34 (see FIG. 5).
  • FIG. 7 shows, in a representation similar to FIG. 6, an embodiment in which the hot runner 9a does not have a decisive cross-sectional constriction, but only the mold insert 9, which is designated 9c, which acts as a brake.
  • 8 illustrates an embodiment in which the mold insert 2 has a cross-sectional constriction 9c on a conical centering 41.
  • FIGS. 9, 10 and 10a illustrate an adjusting and regulating device with a hot runner nozzle 9, in the hot runner 9a of which a needle element 14 is provided so as to be axially adjustable, which has a central locking needle 41 and a sleeve-shaped compression needle 42 surrounding the central locking needle 41.
  • This design is therefore a double-needle version which has two separate and independently drivable actuating mechanisms with drive and control electronic devices. That is, the central locking needle 41 is connected to a screw spindle 13 ', which is provided in a rotationally fixed manner by means of an associated head 17'.
  • the screw spindle 13 ′′ is screwed through a nut element 16 ′ which is rotatably but axially immovably mounted in a clamping plate 7 and in a spacer plate 6.
  • the nut element 16 ' is formed with a worm wheel 16a which meshes with a worm 15'.
  • the sleeve-shaped compression needle 42 is combined with a screw spindle 13 ′′, which is arranged with its head 17 ′′ in the spacer plate 6 so that it can move in an axially fixed manner.
  • the screw spindle 13 ' is by a Screwed nut element 16 '', which is formed with a worm wheel 16a.
  • a worm 15 ′′ meshes with this latter worm wheel 16a.
  • the screws 15 'and 15'' can be driven independently of one another in a defined manner around the central one
  • Locking needle 41 and the sleeve-shaped compression needle 42 are defined axially.
  • the hot runner 9a is formed in the vicinity of its gate 1b adjacent to the mold cavity la with a compression space 43.
  • FIG. 9 illustrates the operating state in which the central shut-off needle 41 closes and seals the gate 1b of the hot runner 9a
  • Mold cavity la is completely filled with the plastic material to form the injection molded part 1.
  • Reference number 31 also denotes a pressure sensor in FIG. 9. According to FIG. 9, the sleeve-shaped compression needle 42 is also in its one end position.
  • FIG. 10 illustrates the other end position of the needle element 14, ie the position in which both the central locking needle 41 and the sleeve-shaped compression needle 42 surrounding it are in their respective open positions.
  • the injection process initiated by the injection molding machine 37 can push the plastic into the mold cavity la through the gate 1b.
  • the pressure that occurs is checked and monitored by means of the pressure sensor 31.
  • FIG. 11 shows a mold cavity la for an injection molded part 1, which is filled asymmetrically with plastic material via two hot runner nozzles 9.
  • Such an asymmetrical filling enables the weld seam to be steered as desired.
  • the needle element 14 of the hot runner nozzle 9 shown on the left is in the closed state. That is, the filling process via the hot runner nozzle 9 shown on the left has already been completed. The relevant mass flow is stopped. It will triggered by the signal effect of the pressure sensor 31 on the left side of the mold cavity la or by a fixed program or characteristic map previously entered into the evaluation and control electronics device 34 (see FIG. 5).
  • the needle element 14 of the hot runner nozzle 9 shown on the right is still in the open position, which is illustrated by the arrow w.
  • Plastic mass flows through the hot runner 9a of the hot runner nozzle 9 shown on the right into the mold cavity la in order to connect at the predetermined point 44 to the plastic material which has flowed in on the left.
  • the pressure sensor 31 assigned to the right hot runner nozzle 9 signals this completion of the casting process, so that the right needle element 14 also via the evaluation and control electronics device 34 (see FIG. 5) - or if the pressure sensor 31 is not present - Can be closed on the map of the electronic device 34 or on the standard program of the injection molding machine 37.
  • Fig. 12 illustrates in sections in a sectional view three needle elements 14, which are provided parallel to one another and closely aligned.
  • Each needle element 14 is connected to a screw spindle 13.
  • Each screw spindle 13 has a head 17 in order to secure the corresponding screw spindle 13 with the associated needle element 14 against rotation.
  • the respective screw spindle 13 is screwed through a nut element 16, which is rotatable in a mounting plate 7 and axially immovable with the aid of a holding and centering plate 7a.
  • Each nut member 16 is provided with a gear 16b.
  • the gears 16b are intermeshing with each other and with a tooth element 45.
  • the toothed element 45 can be formed by a toothed wheel or by a toothed rack.
  • the respective adjacent screw spindles 13 and the associated nut elements 16 have oppositely oriented screw spirals.
  • the number of intermeshing nut elements 16 and thus the number of needle elements 14 provided next to one another is virtually unlimited. It follows from this that, in addition to the desired small distances A between the mutually parallel needle elements 14, an inexpensive central drive of the needle elements 14 can also be realized.
  • This central drive can be combined with an evaluation and control electronic device 34, as described above in connection with FIG. 5, but it is also possible to activate the central drive without such an electronic device 34 via a core pulling program of the injection molding machine 37 , ie to address and trigger.
  • FIG. 13 shows an embodiment with two needle elements 14 arranged closely next to each other.
  • Each needle element 14 is combined with a screw spindle 13.
  • the two screw spindles 13 have opposite screw spirals.
  • the respective screw spindle 13 is screwed through a nut element 16 which is formed with a worm wheel 16a.
  • a common worm 15, which is arranged between the two nut elements 16, meshes with the two worm wheels 16a of the nut elements 16. If the worm 15 is driven in rotation, the two nut elements 16 are driven in the opposite direction. This rotation of the nut elements 16 causes an axial adjustment of the Needle elements 14 which are secured against rotation.
  • the worm 15 can, of course, also mesh with a plurality of nut elements 16 mounted in pairs one behind the other in order to be able to simultaneously adjust a corresponding number of needle elements 14. 13 also has the advantage of a small nest spacing A in combination with the further advantage described above for FIG. 12.
  • the 14 illustrates an embodiment in which the needle element 14 forms a rotary needle.
  • the needle element 14 is firmly connected to a screw spindle 13 which is screwed into a nut element 16 fixed to the tool.
  • the nut element 16 is part of a holding and centering plate 7a.
  • the screw spindle 13 is provided with a gear 46, which meshes with a distributor gear 24.
  • the distributor gear 24 meshes with a drive gear 25 (see also FIG. 5). If the drive gear 25 is driven, the screw spindle 13 is driven in rotation via the distributor gear 24 and, as desired, is screwed through by the nut element 16 in order to adjust the needle element 14 in the axial direction.
  • FIG. 15 shows, in a sectional illustration, sections of a hot runner nozzle 9 with a needle element 14, which has a number of closure needles 41 which extend in parallel through a common compression needle 42.
  • the hot runner nozzle 9 has a compression space 43.
  • Very small-volume mold cavities 1 a are provided between mold inserts 2 and 3.
  • Each mold cavity la has a chamfer 1b, ie a single injection 49.
  • An embodiment with four individual injections 49 is illustrated in FIG. 15.
  • the hot runner nozzle 9 is with the
  • Compression chamber 43 is formed which, with or without the shut-off needles 41, enables multiple individual injection 49 via the independently and separately axially adjustable compression needle 42. From Fig. 15 it is readily apparent that such a design of
  • Hot runner nozzle 9 with a common compression needle 42 and a number of locking needles 41 very small-volume injection molded parts 1 can be realized in the smallest and narrowest spaces with extreme injection and repressing parameters.
  • FIG. 16 shows a needle element 14, the tip 14s of which serves as a cross-sectional brake of a sprue 51.
  • the tip 14s is therefore pressure and flow resistant. This makes it possible to hydraulically balance branches of an entire sprue system.
  • the needle element 14 is also combined with a screw spindle 13, which has a head 17, by means of which the screw spindle 13 counteracts
  • the screw spindle 13 is screwed through a nut element 16 which has a worm wheel 16a.
  • a worm 15 meshes with the worm wheel 16a.
  • the needle element 14 is fixedly connected to the screw spindle 13 by means of a cover element 18 'and by means of a tuning disk 19 between the head 17 of the screw spindle 13 and the cover element 18'.
  • the cover element 18 ' is designed sleeve-shaped and provided with a pressure sensor 31.
  • an evaluation and control electronics device 34 see FIG. 5
  • a pressure display device can be started or acted upon via the needle element 14, which acts as a pressure probe, as it were, in order to effect, for example, motor control.
  • the said pressure display can also serve as the basis for manual adjustment.
  • the worm 15 a bearing boss 15a for a socket 55 or the like. exhibit.
  • the bearing shoulder 15a extends in steps through a cover ring 53.
  • the end face of the bearing shoulder 15a is formed with a calibration mark 15c and the cover ring 53 is formed with a scale 54.
  • the bearing projection 15a is formed with a polygonal blind hole 15b into which the socket wrench 55 can be inserted. With the help of the socket wrench 55, it is then possible to turn the worm 15 in order to axially adjust the needle element 14.
  • the scale 54 then serves to display the adjustment path of the needle element 14.
  • the needle element 14 is drawn in a position in which its tip 14s is immersed in a bore 52, for example to temporarily close a specific sprue in a multi-component injection mold.
  • FIG. 17 shows, on the left side, in sections and in section, an adjusting and regulating device with a screw spindle 13 for a needle element 14, the screw spindle 13 being connected to a locking insert 56 via a screw 57.
  • a breakthrough can be made if necessary shaped or a flat surface can be formed in the raised state.
  • a needle element 14 is drawn on the right side of FIG. 17 and functions as an embossing stamp in the area 58 of a mold cavity la.
  • the suitably profiled needle element 14 is lowered during the filling process and during the repressing period by means of the screw 15 in order to emboss the area 58 of the injection molded part 1 with high precision and the smallest wall thickness.
  • FIG. 17a illustrates, like FIG. 5, a servo or stepping motor 28 which, by means of a torque-transmitting driver surface 47 with a bearing projection 15a of the worm
  • the servo motor 28 drives the actuating and via the worm 15
  • the nut element 16 is screwed through, which has a worm wheel 16a.
  • a worm 15 meshes with the worm wheel 16a.
  • the nut element 16 is rotatably and axially immovably mounted in a platen 7.
  • the nut element 16 is mounted in the clamping plate 7 by means of a holding and centering ring 20.
  • the needle element 14 extends into a hot runner distributor block 10. This enables the use of normal hot runner nozzles 9 ′, which are not prepared for a needle closure, in order to produce an injection molded part 1.
  • the hot runner nozzle 9 'seals with a component 59 which is formed with a transition cone cavity 60.
  • the needle element 14 is assigned with its tip 14s to the transition cone cavity 60. In the corresponding position of the needle element 14, the tip 14s bears against the component 59 such that the transition cone cavity 60 is sealed.
  • the pressure sensor 31 is positioned in the transition cone cavity 60 in order to detect the pressure of the plastic material here.
  • 19 differs from the embodiment shown in FIG. 18 in particular in that the pressure sensor 31 does not protrude into the transition cone space 60, but is provided in the mold insert 3 and protrudes into the mold cavity la for the injection molded part 1.
  • 19 corresponds to the embodiment shown in FIG. 18, so that it is unnecessary in connection with FIG. 19, in which the same details as in FIGS. 1 to 17 and 18 are referred to again in detail describe.
  • FIG. 20 illustrates a section according to FIG. 18, ie the needle element 14 with the tip 14s and the Transition cone cavity 60, a flow gap Sp being determined by the tip 14s of the needle element 14.
  • the needle element 14 can oscillate in the event of possible motor readjustment via the pressure sensor 31 and the evaluation and control electronics device 34 (see FIG. 5).
  • FIG. 21 shows a rotating needle element 14 which extends through a hot runner nozzle 9.
  • Housing parts 61 and 62 press on the hot runner nozzle 9 and are connected to one another by threaded pins 65 and centered with one another by means of a centering pin 64.
  • the entire, relatively small-volume housing body including the screw spindle 13, the worm wheel 16a and the worm 15 as well as a guide element 66 and the housing parts 61 and 62 are heated by means of heating devices 63.
  • These heating elements 63 are, for example, tubular heating elements which are provided with thermal sensors (not shown).
  • a pressure sensor 31 is in the
  • Mold insert 3 is provided, which protrudes into the mold cavity la for the injection molded part 1.
  • the pressure sensor 31 can of course also be located in the mold insert 2.
  • the screw spindle 13 is firmly connected to the needle element 14 by means of pins 67.
  • the hot runner 9a is in the hot runner nozzle 9 with a cone section 9e with a narrowing cross section formed, which cooperates with a cone section 14a of the needle element 14 in order to create a flow brake which is necessary for regulation.
  • the pressure sensor 31, which is important for the said regulation can be fastened directly in the hot runner nozzle 9 or can be attached to a component 9 f which is fastened to the hot runner nozzle 9. This can be done, for example, by welding.
  • the component 9f is expediently positioned such that the pressure sensor 31 is located downstream of the cone section 9e of the hot runner 9a of the hot runner nozzle 9.
  • the needle element 14 is combined with a screw spindle 13 secured against rotation, which extends through a nut element 16 which is rotatably and axially immovably mounted on a mounting plate 7.
  • the nut element 16 has a worm wheel 16a with which a worm 15 is meshingly engaged.
  • FIGS. 23a, 23b and 23c illustrate a so-called three-plate gate with an intermediate plate 75, which is rigidly connected to a clamping plate 7.
  • the platen 7 is covered by an insulating plate 8 to the outside.
  • 23a illustrates an injection molded part 1 with a circumferential collar 1c of small diameter, so that the injection molded part 1 cannot be injection molded with a hot runner known per se, but only via a sprue pin 68 and the associated gate 9b.
  • the sprue distributor 69 no longer has to be necessarily balanced here.
  • a nut element 16 is rotatably and axially immovably mounted, which is formed with a worm wheel 16a.
  • a worm 15 meshes with the worm wheel 16a.
  • a screw spindle 13 is screwed through the nut element 16 and has a head 17 for the arrangement secured against rotation.
  • a needle element 14 is firmly connected to the screw spindle 13.
  • the nut element 16 is driven in rotation via the worm 15, the worm wheel 16a meshing therewith.
  • the needle element 14 is moved in the axial direction by means of the screw spindle 13, the tip of the needle element 14 reaching a position in which a gap Sp is released between the tip 14s and an intermediate plate 76. This position is corrected by the pressure sensor 31 in the mold plate 3 and by the evaluation and control electronics device 34 (see FIG. 5) connected to the pressure sensor 31.
  • the relatively bulky sprue pin 68 with the sprue distributor 69 is in the intermediate plate 76 or between the
  • Intermediate plates 75 and 76 embedded.
  • the intermediate plate 76 is removed from the intermediate plate 75. This is illustrated in Fig. 23b by the arrow ABI.
  • a sprue drop AB (see FIG. 23c) is thus created between the two intermediate plates 75 and 76.
  • the mold insert 3 and the intermediate plate 76 move in a coordinated manner with respect to the intermediate plate 75 and the associated clamping plate 7. During these opening movements, the needle element 14 acts back by the path W according to FIG. 23b, the
  • Demolding resistance ring 73 comes out of the sprue distributor 69.
  • the needle element 14 - as can be seen from FIG. 23c - again moves the distance W1.
  • the sprue distributor 69 with the sprue pins 68 is detached from the intermediate plate 75 so that it can drop freely from the intermediate plate 75.

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

Abstract

L'invention concerne un dispositif de réglage et de régulation destiné à au moins un canal chaud ou froid (9a) qui est relié à une cavité de moulage (1a) d'une outil de moulage de matière plastique. Dans le ou les canaux (9a, 60) se trouve un pointeau (14) qui peut être déplacé dans le sens de la longueur, dans le canal (9a), au moyen d'un dispositif d'entraînement (27). Selon l'invention, ledit pointeau (14) est combiné avec une broche filetée (13) qui est vissée dans un écrou (16). La broche filetée (13) ou l'écrou (16) peuvent être entraînés en rotation au moyen du dispositif d'entraînement (27), pour déplacer le pointeau (14) sur une distance axialement définie par rapport à la cavité de moulage (1a) et selon les besoins.
PCT/DE1999/000835 1998-12-15 1999-03-23 Dispositif de reglage et de regulation pour un canal chaud ou froid d'un outil de moulage de matiere plastique WO2000035655A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41300/99A AU4130099A (en) 1998-12-15 1999-03-23 Adjusting and regulating device for a hot channel or a cold channel in a plasticform tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998157735 DE19857735B4 (de) 1998-12-15 1998-12-15 Stell- und Regelvorrichtung für einen Heiß- oder Kaltkanal eines Kunststoff-Formwerkzeuges
DE19857735.4 1998-12-15

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US6884061B2 (en) 2002-09-18 2005-04-26 Mold-Masters Limited Metering device for a nozzle of an injection molding apparatus
US7175419B2 (en) 2002-12-03 2007-02-13 Mold-Masters Limited Hot runner co-injection nozzle
US7175420B2 (en) 2003-02-13 2007-02-13 Mold-Masters Limited Valve gated injection molding system with independent flow control
US7686603B2 (en) 2007-02-21 2010-03-30 Mold-Masters (2007) Limited Hot runner actuator
JP2014008782A (ja) * 2012-06-28 2014-01-20 Inglass Spa プラスチック材料の射出成形のための装置
US10471637B2 (en) 2015-04-02 2019-11-12 Otto Männer Innovation GmbH Side gating hot runner apparatus with continuous valve pin movement
EP3071389B1 (fr) 2013-11-22 2020-04-15 Priamus System Technologies AG Procédé pour régler le remplissage d'au moins une cavité

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DE19955320C1 (de) * 1999-11-17 2001-03-15 Hansjuergen Moeser Stell- und Regelvorrichtung für einen Heiß- oder Kaltkanal eines Kunststoff-Formwerkzeuges
DE10325260A1 (de) * 2003-06-03 2004-12-30 Gauss, Ralph Kunststoffeinspritzeinheit durch Doppelnadel
US7072735B2 (en) * 2004-04-23 2006-07-04 Husky Injection Molding Systems Ltd. Control system for utilizing active material elements in a molding system
AT7669U1 (de) * 2004-05-12 2005-07-25 Rico Elastomere Projecting Gmb Spritzgussform
DE102005042850B3 (de) * 2005-09-09 2007-03-15 Incoe International, Inc. Pneumatische Betätigungseinrichtung für die Steuerung des Anschnitts von Nadelverschlußdüsen in einer Spritzgießanlage
CN101088738B (zh) 2006-06-16 2012-11-14 马斯特模具（2007）有限公司 用于注射成型的开环压力控制
EP1935607B1 (fr) 2006-12-21 2014-06-18 Mold-Masters (2007) Limited Clapet pour appareil de moulage par coinjection
DE102008039336A1 (de) * 2008-08-22 2010-02-25 Otto Männer Innovation GmbH Spritzgießwerkzeug mit verschließbarer Heißkanaldüse
WO2012074879A1 (fr) 2010-11-23 2012-06-07 Synventive Molding Solutions, Inc. Appareil et procédé de régulation de débit pour moulage par injection
US10899056B2 (en) 2011-11-23 2021-01-26 Synventive Molding Solutions, Inc. Non-coaxially mounted electric actuator and transmission
EP3019323B1 (fr) 2013-07-08 2018-04-04 Synventive Molding Solutions, Inc. Transmission et actionneur électrique montés de manière non coaxiale
DE102015105097A1 (de) 2014-10-17 2016-04-21 Josef Pfleghar Spritzgießvorrichtung
DE102019128754B3 (de) * 2019-10-24 2021-01-07 Carl Freudenberg Kg Spritzgussdüse für ein Spritzgießwerkzeug und Spritzgießwerkzeug

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6884061B2 (en) 2002-09-18 2005-04-26 Mold-Masters Limited Metering device for a nozzle of an injection molding apparatus
US7192268B2 (en) 2002-09-18 2007-03-20 Mold-Masters Limited Metering device for a nozzle of a hot runner injection molding apparatus
US7175419B2 (en) 2002-12-03 2007-02-13 Mold-Masters Limited Hot runner co-injection nozzle
US7175420B2 (en) 2003-02-13 2007-02-13 Mold-Masters Limited Valve gated injection molding system with independent flow control
US7686603B2 (en) 2007-02-21 2010-03-30 Mold-Masters (2007) Limited Hot runner actuator
JP2014008782A (ja) * 2012-06-28 2014-01-20 Inglass Spa プラスチック材料の射出成形のための装置
EP3071389B1 (fr) 2013-11-22 2020-04-15 Priamus System Technologies AG Procédé pour régler le remplissage d'au moins une cavité
US10471637B2 (en) 2015-04-02 2019-11-12 Otto Männer Innovation GmbH Side gating hot runner apparatus with continuous valve pin movement

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AU4130099A (en) 2000-07-03
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