CN118636413A - Double-plate die closing unit for forming machine - Google Patents

Double-plate die closing unit for forming machine Download PDF

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Publication number
CN118636413A
CN118636413A CN202410277906.1A CN202410277906A CN118636413A CN 118636413 A CN118636413 A CN 118636413A CN 202410277906 A CN202410277906 A CN 202410277906A CN 118636413 A CN118636413 A CN 118636413A
Authority
CN
China
Prior art keywords
plate
mold clamping
clamping
clamping plate
molding machine
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
CN202410277906.1A
Other languages
Chinese (zh)
Inventor
H·蔡德尔霍费尔
L·古格乐
M·埃茨勒
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.)
Engel Austria GmbH
Original Assignee
Engel Austria 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 Engel Austria GmbH filed Critical Engel Austria GmbH
Publication of CN118636413A publication Critical patent/CN118636413A/en
Pending legal-status Critical Current

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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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic
    • B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
    • B29C45/6714—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould
    • B29C45/6728—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould the separate element consisting of coupling rods
    • 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
    • B29C45/1742—Mounting of moulds; Mould supports
    • B29C45/1744—Mould support platens
    • 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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/68—Mould opening, closing or clamping devices hydro-mechanical

Landscapes

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

Abstract

The invention relates to a two-plate clamping unit for a molding machine, comprising a machine frame (10), on which one clamping plate (1) is fixedly arranged and the other clamping plate (2) is arranged movably relative to the machine frame along a machine longitudinal axis, the clamping plates (1, 2) having mutually opposite clamping surfaces, and the clamping unit comprising exactly two tie rods (4, 5) for transmitting clamping forces between the fixed and movable clamping plates (1, 2), the two tie rods (4, 5) being arranged at least approximately diagonally opposite each other, each tie rod (4, 5) being provided with a locking device (8) and a pressure pad (16), preferably the two locking devices (8) being located directly on the movable clamping plate (2) or the fixed clamping plate (1), and the other clamping plate of the two clamping plates (1, 2) supporting the two pressure pads (16). The invention also relates to a molding machine with the mold clamping unit.

Description

Double-plate die closing unit for forming machine
Technical Field
The present invention relates to a double-plate clamping unit for a molding machine and a molding machine having such a double-plate clamping unit, having the features of the preamble of claim 1.
Background
DE 10 2006 017 026 B4 discloses a double-plate clamping unit having the features of the preamble of claim 1 and a molding machine in the form of an injection molding machine having such a double-plate clamping unit.
In paragraph [0008] of the above patent, a double-bar clamping unit is considered, the only specific disclosure relating to a cylindrical ridge of the clamping surface of the mold. Other specific features are not disclosed, particularly whether it is a two-plate clamping unit.
Disclosure of Invention
The object of the invention is to improve a clamping unit of this type such that the material requirements are reduced.
The object is achieved in a first aspect by a two-plate clamping unit for a molding machine, comprising a machine frame on which one clamping plate is fixedly arranged and the other clamping plate is arranged movably relative to the machine frame along a machine longitudinal axis, the clamping plate having mutually opposite clamping faces, and comprising exactly two tie rods for transmitting clamping forces between the fixed clamping plate and the movable clamping plate, wherein the two tie rods are at least approximately diagonally opposite each other with respect to an imaginary cross section extending transversely to the machine longitudinal axis and parallel to the vertical, each tie rod being provided with a locking device and a pressure pad, and at least one of the two locking devices being located directly on the movable clamping plate or the fixed clamping plate, and the other clamping plate of the two clamping plates bearing at least one of the pressure pads.
In the two-plate clamping unit according to the invention, the clamping plate itself with the clamping surface is designed in such a way that no pressure plate or no pressure frame is required as taught in DE 10 2006 017 026 B4.
At least one of the two locking devices is directly located on the movable mold clamping plate or the fixed mold clamping plate, and at least one of the two pressure pads is supported by the other of the two mold clamping plates. In DE 10 2006 017 026 B4, two locking devices are located on or two pressure pads are supported by a pressure plate or a pressure frame.
The object is achieved on the other hand by a molding machine, in particular an injection molding machine (preferably a plastic injection molding machine) or a die casting machine, having such a clamping unit.
Advantageous embodiments of the invention are defined in the dependent claims.
In one embodiment, the two locking devices are located directly on the movable mold clamping plate or the fixed mold clamping plate, and the other mold clamping plate of the two mold clamping plates supports the two pressure pads.
In one embodiment, at least one, preferably exactly one, quick travel cylinder is provided for moving the movable platen, which quick travel cylinder is arranged outside the platen clamping surface. Preferably, the quick travel cylinder is arranged only on one side of an imaginary cross section laid by the two tie rod axes of the tie rods, alternatively, it is also possible to arrange it exactly in this cross section. Thus, the other side of the imaginary section remains free between the mold clamping plates. This has the advantage that, during removal by the automation device (the base of which is mounted on the mold clamping plate), it is not necessary to guide the molded part in the vertical direction with respect to the tie rod.
In this embodiment, a loading device which can be actuated by the control device can be provided, by means of which at least one cylinder rod of the quick-stroke cylinder and/or at least one of the two tie rods can be loaded with tension and/or compression.
In one embodiment, it is provided that the die clamping surface of at least one of the two die clamping plates has a saddle-surface-shaped bulge, preferably a saddle-surface-shaped die clamping surface, which has a convex shape in the diagonal of the two tie bars, viewed from the side of the opposite die clamping surface, and a concave shape in the diagonal of the no tie bars.
In one embodiment, it is provided that at least one of the two mold clamping plates has at least one integrated pressure chamber for actively (adjustably) raising the mold clamping surface.
In one embodiment, it is provided that the movable mold clamping plate is arranged on a cantilever arm of the frame.
In a molding machine, in particular an injection molding machine, it can be provided that the molding machine has a plurality of further actuators in addition to the two pressure pads that can be actuated hydraulically, wherein all further actuators, except for the two pressure pads, are electrically actuated.
Drawings
Embodiments of the present invention are discussed with the aid of the figures.
FIG. 1 illustrates one embodiment of a dual platen clamping unit.
FIG. 2 illustrates one embodiment of an injection molding machine.
Fig. 3 shows a cross-section of fig. 2.
Fig. 4 shows a cross-section of fig. 3.
FIG. 5 illustrates a top view of a stationary mold clamping plate of one embodiment of a dual plate clamping unit.
Fig. 6 shows a cross-sectional view of fig. 5.
Fig. 7 shows another cross-sectional view of fig. 5.
FIG. 8 illustrates a top view of a stationary mold clamping plate of one embodiment of a dual plate clamping unit.
Fig. 9a, 9b show a top view and a cross-sectional view of a stationary mold clamping plate of one embodiment of a double plate clamping unit.
Fig. 10a, 10b show a top view and a cross-sectional view of a stationary mold clamping plate of one embodiment of a double plate clamping unit.
FIG. 11 illustrates one embodiment of an injection molding machine.
Fig. 12 shows a cross-sectional view of fig. 11.
Detailed Description
Fig. 1 shows a double-plate clamping unit for an injection molding machine, having a machine frame 10 on which a mold clamping plate 1 is fixedly arranged and to which a further mold clamping plate 2 is movably arranged along a machine longitudinal axis by means of guide rails 17, wherein the mold clamping plates 1,2 have mutually opposite mold clamping surfaces, and the clamping unit has exactly two tie rods 4, 5 for transmitting clamping forces between the fixed mold clamping plate and the movable mold clamping plate 1,2, which are diagonally opposite each other with respect to an imaginary cross section transverse to the machine longitudinal axis, wherein each tie rod 4, 5 is provided with a locking device 8 and a pressure pad 16, wherein the two locking devices 8 are located directly on the movable mold clamping plate 2 and the fixed mold clamping plate 1 supports the two pressure pads 16.
In the upper region of the two mold clamping plates 1,2, exactly one quick-travel cylinder (Eilgangzylinder) 6 is provided for displacing the movable mold clamping plate 2, which quick-travel cylinder is arranged outside the mold clamping surfaces of the mold clamping plates 1,2 relative to the two tie rods 4, 5 in such a way that it forms an imaginary triangle with these tie rods in an imaginary transverse plane transverse to the machine longitudinal axis (see also fig. 8 and 9).
The ejector 13 for the molded article is not shown in fig. 1 (but see the embodiment of fig. 2), and the ejector 13 may be provided on the movable mold cramping plate 2.
In the embodiment of fig. 2, the pressure pad 16 is integrated in the stationary mold clamping plate 1 and is therefore not visible. In other respects the same applies as described in relation to fig. 1.
Fig. 3 shows a section along line H-H of fig. 2. It can be seen that the two tie rods 4, 5 are diagonally arranged.
Fig. 4 shows a section along the line J-J of fig. 3. It can be seen that two pressure pads 16 are integrated in the stationary platen 1 and that the mold clamping surfaces are optionally raised.
In fig. 5, the bulge of the die clamping surface of fig. 4 is shown in more detail in connection with fig. 6 and 7. Fig. 6 shows a section along the line n-n of fig. 5, and fig. 7 shows a section along the line m-m of fig. 5. Since the ridge is formed in the shape of a saddle surface, (a denotes a plate center point; a 1-4 denotes corner points of the mold cramping plate, in which a 1 and a 2 are located at center points of tie rods 4 and 5, respectively, and a 3 and a 4 are located at plate edges, respectively; y HM denotes a rod spacing from axis to axis in the y-direction; z HM denotes a rod spacing from axis to axis in the z-direction; Δx' and Δx "denote deformation correction, respectively), apply to fig. 6:
A(x,y,z)＝A(0,0,0)
Or for fig. 7:
A(x,y,z)＝A(0,0,0)
Fig. 8 shows an embodiment in which the cylinder rod (in the lower right corner) of the quick-stroke cylinder 7 can be acted upon by a loading device that can be actuated by means of a control device. Thereby, the point of application is moved from the plate center point a in the n-direction (F 1>F2) and m-direction toward the resultant point of application a'. This is particularly important for asymmetric mold cavities, as it is shown in fig. 8, but its importance is also dependent on the mold rigidity and cavity design. Also, the hot runner nozzle control can be optimally coordinated during injection and mold clamping force build-up (to account for venting and coining). Active parallelism adjustment or inclination adjustment can be performed during clamp force build-up.
The pressure chambers 14, 15 integrated into the mold clamping plate are shown in fig. 9a and 9b (cross section along line n-n of fig. 9 a) or fig. 10a and 10b (cross section along line m-m of fig. 10 a). The adjustability is achieved by adjustably loading the pressure chambers 14, 15 with hydraulic oil by means of a control device.
Fig. 11 shows a view of a further embodiment of the injection molding machine, in which a quick travel cylinder 6, 7 is provided in each case at the top and bottom.
Fig. 12 shows a section along line H-H of fig. 11.
Reference numerals
1. Fixed die clamping plate
2. Movable mold clamping plate
3. Injection unit
4. Pull rod
5. Pull rod
6. Upper quick travel cylinder
7. Lower quick travel cylinder
8. Locking device
9. Cantilever arm
10. Rack
11. Mould
12. Mould
13. Material ejector
14. Pressure chamber
15. Pressure chamber
16. Pressure pad
17. Guide rail
Δx ', Δx' deformation correction
Rod spacing in the y HM y direction (axis-to-axis)
Rod spacing in the z HM z direction (axis-to-axis)
Center point of A plate
A 1–4 die clamping plate corner point or pull rod center point
Force application point 1 of F 1 rod-pressure pad
Force application point 2 of F 2 rod-pressure pad
F 3 quick travel cylinder-pressure pad force application point 3
Force application distance 1 from n F1 rod to plate center point A
Force application distance 2 from n F2 rod to plate center point A
Force application distance i from m Fi rod to plate center point A
Point of application for A' synthesis
Offset (displacement) of Δm point of application A→A', m-axis
Offset (displacement) of an application point A-A' of delta n, n-axis

Claims (9)

1. A double-plate clamping unit for a molding machine, having a machine frame (10) on which a mold clamping plate (1) is fixedly arranged and to which the other mold clamping plate (2) is movably arranged along a machine longitudinal axis, wherein the mold clamping plates (1, 2) have mutually opposite mold clamping surfaces, and having exactly two tie rods (4, 5) for transmitting clamping forces between the fixed mold clamping plate and the movable mold clamping plate (1, 2), the two tie rods (4, 5) being arranged at least approximately diagonally opposite each other with respect to an imaginary cross section extending transversely to the machine longitudinal axis and parallel to the vertical, each tie rod (4, 5) being provided with a locking device (8) and a pressure pad (16), characterized in that at least one of the two locking devices (8) is located directly on the movable mold clamping plate (2) or the fixed mold clamping plate (1), and the other of the two mold clamping plates (1, 2) supports at least one of the two pressure pads (16).
2. The two-plate clamping unit according to the preceding claim, wherein the two locking devices (8) are located directly on the movable mold clamping plate (2) or the fixed mold clamping plate (1), and the other mold clamping plate of the two mold clamping plates (1, 2) supports two pressure pads (16).
3. Double plate clamping unit according to one of the two preceding claims, wherein at least one, preferably exactly one, quick travel cylinder (6, 7) is provided for moving the movable mold clamping plate (2), which quick travel cylinder is arranged outside the mold clamping surface of the mold clamping plate (1, 2).
4. Double plate clamping unit according to the preceding claim, wherein a loading device is provided which can be actuated by a control device, by means of which at least one cylinder rod of the quick-stroke cylinder (6, 7) and/or at least one tie rod of the two tie rods (4, 5) can be loaded with tension and/or pressure.
5. The two-plate clamping unit according to at least one of the preceding claims, wherein the clamping face of at least one of the two clamping plates (1, 2) has a saddle-face-shaped bulge, preferably a saddle-face-shaped clamping face, which, viewed from the side of the opposite clamping face, has a convex shape in the diagonal of the two tie bars and a concave shape in the diagonal of the no tie bars mounted.
6. The two-plate clamping unit according to at least one of the preceding claims, wherein at least one of the two mold clamping plates (1, 2) has at least one integrated pressure chamber (14, 15) for adjustable raised mold clamping surfaces.
7. Double plate clamping unit according to at least one of the preceding claims, wherein the movable mold clamping plate (2) is arranged on a cantilever arm (9) of a frame (10).
8. Molding machine, in particular injection molding machine or die casting machine, with a double plate clamping unit according to at least one of the preceding claims.
9. The molding machine according to the preceding claim, wherein the molding machine has a plurality of further actuators in addition to the two pressure pads (16) which can be hydraulically actuated, wherein all further actuators are electrically actuated in addition to the two pressure pads (16).
CN202410277906.1A 2023-03-13 2024-03-12 Double-plate die closing unit for forming machine Pending CN118636413A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50189/2023A AT526837B1 (en) 2023-03-13 2023-03-13 Two-platen clamping unit for a forming machine
ATA50189/2023 2023-03-13

Publications (1)

Publication Number Publication Date
CN118636413A true CN118636413A (en) 2024-09-13

Family

ID=92263624

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410277906.1A Pending CN118636413A (en) 2023-03-13 2024-03-12 Double-plate die closing unit for forming machine

Country Status (3)

Country Link
CN (1) CN118636413A (en)
AT (1) AT526837B1 (en)
DE (1) DE102024105260A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501948B1 (en) * 2005-04-21 2007-08-15 Engel Austria Gmbh injection molder
AT9995U1 (en) * 2006-11-21 2008-07-15 Engel Austria Gmbh FORMING DEVICE FOR AN INJECTION MOLDING MACHINE
AT507717A1 (en) * 2008-12-16 2010-07-15 Engel Austria Gmbh Locking unit for an injection molding machine
AT517832B1 (en) * 2016-01-28 2017-05-15 Engel Austria Gmbh Method for determining the position of an initiation point of a Auftreibkraft

Also Published As

Publication number Publication date
AT526837B1 (en) 2024-08-15
AT526837A4 (en) 2024-08-15
DE102024105260A1 (en) 2024-09-19

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