CN101391478A - Pressing board, clamping device and injection moulding machine - Google Patents
Pressing board, clamping device and injection moulding machine Download PDFInfo
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- CN101391478A CN101391478A CNA2008102129312A CN200810212931A CN101391478A CN 101391478 A CN101391478 A CN 101391478A CN A2008102129312 A CNA2008102129312 A CN A2008102129312A CN 200810212931 A CN200810212931 A CN 200810212931A CN 101391478 A CN101391478 A CN 101391478A
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Abstract
The invention provides a pressure plate, a clamping device and an injection molding machine, which can control the undesirable affection of a pin hole for pins of demoulding piece to a movable pressure plate and reduce problem generated during pressure plate design. In a back panel (32) of the movable pressure plate (3), the thickness t3 of the back panel (32) where a pin (100) is formed is formed to be bigger than the thickness t4 of the back panel (32) where the pin (100) is not formed. Preferably, a cross section of a long circular shape or an elliptic shape is provided at the end of the pin hole at the back panel (32) side in the pin hole (100). When a mould which is long in a certain direction is mounted on a mould mounting plate (31), the longer diameter direction of the pin end of the pin (100) with a long circular shape or an elliptic shape is perpendicular to the longer direction of the mould. In the rear panel (32), recess towards the mould mounting plate (31) is formed near to the formation portion of the pin (100), or it is also effective if the notch is formed on the back panel (32).
Description
Technical field
The present invention relates to a kind of pressing plate, mold closing mechanism, injection (mo(u)lding) machine that is used for installation mold.
Background technology
Being used for the mold closing mechanism on injection (mo(u)lding) machine and the die casting machine, is that the dynamic pressure plate that makes the fixed pressuring plate that is positioned at fixation side and be positioned at active side is oppositely arranged and forms.Dynamic pressure plate, be to use as hydraulic cylinder etc. to fixed pressuring plate near or away from direction be the advance and retreat mode and driven.Fixed side mold is installed on the fixed pressuring plate, and movable side mold then is installed on the dynamic pressure plate.With plastic cement or metal charge, be injected between these fixed moulds and the flexible mould in the formed die cavity, to form the formed article of given shape.
At this, injection (mo(u)lding) machine and die casting machine all possess the fixed pressuring plate corresponding, large-scale and dynamic pressure plate with die size (below, when distinguishing for fixed pressuring plate and dynamic pressure plate except needs, these all are called pressing plate).In the time will forming large-scale formed article, the size of pressing plate also can increase naturally.
When adding the large plate size, need to strengthen the measure of pressing plate, with the distortion that prevents from when applying briquetting pressure (clamping pressure), on the mould installed surface of pressing plate, to produce especially.Mention the structure of strengthening pressing plate, can include the back design reinforcement of the mould installed surface of pressing plate, perhaps platen design becomes box and reinforcement to be located at inside (for example, referring to patent documentation 1).
So, the design pressing plate must will be considered the distortion of pressing plate.
In addition, injection (mo(u)lding) machine and die casting machine have knock-outs will, so that resulting formed article is released the demoulding (for example, referring to patent documentation 2) after the moulding.
This knock-outs will is stripper pin to be inserted lead on dynamic pressure plate in the formed pin-and-hole, and utilizes drivings of relatively advancing and retreat of motor and ball-screw etc. and dynamic pressure plate, release formed article.
Patent documentation 1: the special table of Japan Patent 2006-523546 communique
Patent documentation 2: the Japan Patent spy opens the 2000-301580 communique
Yet, as above-mentioned, on dynamic pressure plate, can produce the active force that makes the dynamic pressure plate distortion when applying clamping pressure.In dynamic pressure plate, the matched moulds thrust is passed to its place, four angles by pull bar usually.With respect to this, in the central authorities of dynamic pressure plate, produce the reaction force that transmits from the mould between fixed pressuring plate and dynamic pressure plate.So, dynamic pressure plate is brought bending force.As a result, especially in dynamic pressure plate with mould installed surface opposing face on (below be called the mould reverse side) produce the stress of tension direction.
At this moment, on dynamic pressure plate, have the pin-and-hole that is used on the above-mentioned stripper pin, therefore in the time of will designing dynamic pressure plate, the tensile stress on must considering to result from around these pin-and-holes, so that the very big problem when how to solve these stress problems and becoming design.
Summary of the invention
The present invention forms in view of this technical problem, and purpose is to provide a kind of pressing plate, mold closing mechanism, injection (mo(u)lding) machine, and it can control the pin-and-hole that is used for the knock-outs will pin to the harmful effect due to the dynamic pressure plate, and the problem can reduce platen design the time.
On this purpose, the present invention is a kind of pressing plate of installation mold, comprises: mold mounting plate is used for installation mold; Rear board is oppositely arranged with mold mounting plate; And connecting portion, be connected with pull bar at the place, four angles of mold mounting plate and rear board.And, being used for inserting the pin-and-hole that leads to stripper pin is formed on mold mounting plate and the rear board, this stripper pin is used for the formed article that mould forms is carried out the demoulding, therefore when applying the matched moulds thrust when using mould to carry out moulding, in the back on the plate with mold mounting plate away from a side place can reduce and result from the tensile stress that pin-and-hole is located on every side.
As reducing the structure that results from the tensile stress of locating around the pin-and-hole, can adopt following framework.
At first, be formed with peripheral part thickness of pin-and-hole in the back in the plate, form greater than the thickness mode of other parts in the rear board.Thus, can improve the rigidity of the periphery branch that is formed with pin-and-hole in the rear board, can reduce resulting from the tensile stress of locating around the pin-and-hole.
In addition, pin-and-hole at least in the back on the plate with mold mounting plate away from a side place, its cross section forms Long Circle or ellipse.At this, pin-and-hole forms, and when a mould of growing to a certain direction was installed on the pressing plate, its major diameter direction was vertical with mould than length direction.When one when the long mould of a certain direction is installed on the pressing plate, very big tensile stress results from and being on the vertical direction than length direction of mould.By make pin-and-hole at least in the back on the plate with mold mounting plate away from a side place, its cross section can form Long Circle or ellipse, and makes the major diameter direction be vertical with mould than length direction, can reduce to result from the tensile stress of locating around the pin-and-hole.
More and, be preferably: pin-and-hole is a side place relative with mold mounting plate on the plate in the back, its Cross section Design becomes the corresponding shape of face shaping with stripper pin, so that stripper pin can keep in its axis direction freely-movable.
In addition, also have a kind of effective measures to be: breach or to the recessed depression of mold mounting plate is formed on and comprises in the rear board in the zone that pin-and-hole forms the position.As long as form breach, just there is not pin-and-hole on the rear board originally, there is not the influence that is subjected to resulting from the stress of locating around it.If form depression, can make to comprise the zone that pin-and-hole forms the position in the rear board surface, than a side (center of deformation of pressing plate) of the more close mold mounting plate in surface of other parts in the rear board.Thus, can reduce and result from the tensile stress of locating around the pin-and-hole.
This pressing plate can be any framework, also can be framework described below.This pressing plate more comprises: the tubular rib is arranged between mold mounting plate and the rear board, and is positioned at the central authorities of mold mounting plate and rear board; The diagonal angle ribs is arranged between mold mounting plate and the rear board, and is extended on the connecting portion by the tubular rib respectively; And the periphery ribs, be arranged between mold mounting plate and the rear board, and, be arranged between the adjacent connecting portion along the peripheral part of mold mounting plate and rear board.Thus, pressing plate can become the box with high rigidity.
The present invention can be a kind of mold closing mechanism also, it is characterized in that, comprises: the paired pressing plate of installation mold and pressing plate drive division, at least one side of pressing plate drives with advancing and retreat relatively in pairs, with open or close die, and each pressing plate comprises: mold mounting plate is used for installation mold; Rear board is oppositely arranged with mold mounting plate; And connecting portion, can be connected with pull bar at the place, four angles of mold mounting plate and rear board, adding the pin-and-hole that is used for inserting logical stripper pin is formed on mold mounting plate and the rear board, this stripper pin is used for the formed article that mould forms is carried out the demoulding, therefore when applying the matched moulds thrust when using mould to carry out moulding, in the back on the plate with mold mounting plate away from a side place can reduce and result from the tensile stress that pin-and-hole is located on every side.
This mold closing mechanism is applicable to injection (mo(u)lding) machine and die casting machine.
The present invention can be a kind of injection (mo(u)lding) machine also, it is characterized in that, comprises: the paired pressing plate of installation mold; The pressing plate drive division, at least one side of pressing plate drives with advancing and retreat relatively in pairs, with open or close die; And injection cylinder, molding mass is injected in the die cavity of mould, and each pressing plate comprises: mold mounting plate is used for installation mold; Rear board is oppositely arranged with mold mounting plate; And connecting portion, can be connected with pull bar at the place, four angles of mold mounting plate and rear board, adding the pin-and-hole that is used for inserting logical stripper pin is formed on mold mounting plate and the rear board, this stripper pin is used for the formed article that mould forms is carried out the demoulding, therefore when applying the matched moulds thrust when using mould to carry out moulding, in the back on the plate with mold mounting plate away from a side place can reduce and result from the tensile stress that pin-and-hole is located on every side.
According to the present invention, on panel after the pressing plate that when carrying out moulding, produces very big tensile stress, the stress that can reduce or avoid being used for locating around the pin-and-hole of stripper pin, and then can reduce problem on the platen design.
Description of drawings
Fig. 1 is the organigram of the injection (mo(u)lding) machine in the expression present embodiment.
Fig. 2 is 1/4 a stravismus sectional view in the expression dynamic pressure plate, and expression makes the example figure of part rear board enlarged in thickness in the dynamic pressure plate.
Fig. 3 is 1/4 a stravismus sectional view in the expression dynamic pressure plate, and expression to make place, pin-and-hole end Cross section Design be Long Circle or oval-shaped example figure.
Fig. 4 is 1/4 a stravismus sectional view in the expression dynamic pressure plate, and expression is recessed to form the example figure on the rear board in dynamic pressure plate.
Fig. 5 is 1/4 a stravismus sectional view in the expression dynamic pressure plate, and indication notch is formed on the example figure on the rear board.
Symbol description
1: injection (mo(u)lding) machine, 2: fixed pressuring plate, 3: dynamic pressure plate (pressing plate), 4: fixed mold, 5: moving mold, 15: pull bar, 30A: mould installed surface, 30B: opposing face, 31: mold mounting plate, 32: rear board, 33: cylindrical portion (connecting portion), 34: central rib (tubular rib), 36: periphery ribs, 37: diagonal angle ribs, 50: depression, 60: breach, 100: pin-and-hole, 100a: pin-and-hole end
The specific embodiment
Below, according to embodiment shown in the drawings, and be example with the injection (mo(u)lding) machine, the present invention is elaborated.
As shown in Figure 1, in the mold closing mechanism of injection (mo(u)lding) machine 1, the fixed pressuring plate 2 of fixation side is fixed on the base 18.Fixed mold 4 is installed on the fixed pressuring plate 2.The moving mold 5 relative with fixed mold 4 is installed on the dynamic pressure plate (pressing plate) 3 of active side.Dynamic pressure plate 3 is by being installed in guide rail 19 guiding on the base 18, and utilize linear bearing can with fixed pressuring plate 2 relative motions.In motion (the switching campaign of the mould) mechanism of dynamic pressure plate 3, use hydraulically powered hydraulic cylinder, perhaps by electric motor driven ball-screw 22.
Though in the present embodiment, represent as example as the support structure of dynamic pressure plate 3, also can use guide plate and sliding panel, replace guide rail 19 and linear bearing to use guide rail 19 and linear bearing.
A plurality of pull bars 15 are directly connected in slide block 16 modes and are provided with, and this slide block 16 can be built in a plurality of in the closing liquid cylinder pressure 2a in the fixed pressuring plate 2 and slide.The leading section of each pull bar 15 provides the perforation at dynamic pressure plate 3.Be formed with screw thread 15a on the leading section of pull bar 15.The toss about halfnut 17 of (with moving mold 5 opposition sides are installed) of the mould that is arranged on dynamic pressure plate 3 is combined on this screw thread 15a, with the tension direction of restriction pull bar 15.Hydraulic pressure transfer valve 29 is responsible for, and according to the order of not shown control device, opens and closes the switching that hydraulic pressure is carried out in hydraulic cylinder 22, closing liquid cylinder pressure 2a drive etc. to making mould.
Though in the present embodiment, to screw togather part as screw thread 15a between pull bar 15 leading sections and the halfnut 17, but the shape of screw thread 15a, as long as the shape that halfnut 17 and pull bar 15 are axially fited, also can comprise as triangle, helical form such as trapezoidal, or as flat shapes such as zigzags.
Ball- screw nut 9,9 is to be installed in symmetrically on the movable stand 27 in pairs.Ballscrew shaft 8,8 is screwed together on this ball-screw nut 9,9.Make paired injection drive servomotor 12,12 and rotate synchronously,, carry out the injection work of plastics in injection cylinder 6 before and after direction of principal axis so that injection screw 7 advances.
Injection mechanism when utilizing injection driving servomotor 12,12 that injection screw 7 front and back are advanced, and utilizes injection screw rotating motor 13 to rotate injection screws 7.Thus, injection mechanism can make plastic plastification and melt.
Injection mechanism is injected in by fixed mold 4 and moving mold 5 being carried out in the die cavity that matched moulds forms melting plastics.Moving mold 5, by the time untie behind the formed article cooling curing with fixed mold 4 between matched moulds combine, and open and close the work of hydraulic cylinder 22 by the mould that is used for mobile working, leave fixed mold 4 and take out formed article.
In the present embodiment, dynamic pressure plate 3 for example has structure described below.
As shown in Figure 2, in dynamic pressure plate 3, being used for installing the mould installed surface 30A of fixed mold 4, is to be formed by the mold mounting plate 31 with given thickness.Rear board 32 roughly with mold mounting plate 31 be set in parallel in from mold mounting plate 31 to set a distance on.This rear board 32, the opposing face 30B of formation mould installed surface 30A on dynamic pressure plate 3.
The cylindrical portion cylindraceous (connecting portion) 33 that is used to insert steady brace 15 is arranged on the place, four angles of mold mounting plate 31, rear board 32.
Between mold mounting plate 31 and rear board 32, central rib cylindraceous (tubular rib) 34 is arranged on the centre of mold mounting plate 31, rear board 32.
Periphery ribs 36 to be interconnecting cylindrical portion 33,33 modes, and is arranged between mold mounting plate 31 and the rear board 32 along the peripheral part of mold mounting plate 31, rear board 32.
More and between mold mounting plate 31 and rear board 32, the diagonal angle ribs 37 that extends to the diagonal of mold mounting plate 31, rear board 32 is arranged between each and the central rib 34 of cylindrical portion 33 at four angles.
These periphery ribs 36, diagonal angle ribs 37 are arranged to clog between mold mounting plate 31, the rear board 32.
Thus, dynamic pressure plate 3 global designs are the box shape.
Blowhole (opening) 40 is formed on the periphery ribs 36.Blowhole 40 is to be used for keeping core when using dynamic pressure plate 3 to cast, and this core is used for forming the space that is surrounded by periphery ribs 36, adjacent diagonal angle ribs 37,37 and central rib 34.Blowhole 40 is formed on adjacent cylindrical portion 33,33 centre positions on each periphery ribs 36.
Be formed with a plurality of pin-and-holes 100 on dynamic pressure plate 3, resulting formed article was released the demoulding after this pin-and-hole was used for inserting logical stripper pin (not shown) and makes moulding.
In the present embodiment, result from the problem of locating around these pin-and-holes 100, a plurality of schemes about structure around the pin-and-hole 100 are shown in order to solve stress.
At first in scheme shown in Figure 2, in the rear board 32 of dynamic pressure plate 3, make pin-and-hole 100 form the thickness t 3 of the rear board 32 in zone, form thickness t 4 greater than the zone that is not formed with pin-and-hole 100.Thus, when carrying out moulding, produce in the rear board 32 of tensile stress, can improve the rigidity of locating around the pin-and-hole 100 effectively.In addition, be not formed with in the zone of pin-and-hole 100, need not to strengthen plate body thickness, can make the increase of weight reduce to minimum degree.
General dynamic pressure plate is to be same as the dynamic pressure plate 3 that uses as fixed pressuring plate 2, is not inserted with the leading section of injection cylinder 6.So, have solid fore-set in the central authorities of general dynamic pressure plate.But in the dynamic pressure plate 3 of present embodiment, central rib 34 cylindraceous is arranged on the central authorities of dynamic pressure plate 3, and makes its partial design become hollow structure.Thus, can reduce the weight of dynamic pressure plate 3.
In scheme shown in Figure 3, the pin-and-hole end 100a of a side of close rear board 32 is designed to have Long Circle or plurality of stepped serrations in pin-and-hole 100.Like this, be beneficial to one is installed on the mold mounting plate 31 to the long mould of a certain direction.When with one when the long mould of a certain direction is installed in mold mounting plate 31, can make that this major diameter direction is vertical with mould than length direction among the pin-and-hole end 100a of rounded or oval-shaped pin-and-hole 100.
For example, when the mould that direction is long up and down is installed on the dynamic pressure plate 3 and carries out matched moulds, can improve the rigidity of dynamic pressure plate 3 at the above-below direction that mould is installed.Carry out matched moulds, can cause on the dynamic pressure plate 3 producing distortion to the horizontal direction bending, with and his like in the back the pressure direction on the plate 32 based on horizontal direction.At this moment, the pin-and-hole end 100a of pin-and-hole 100 makes with mould and is vertical direction than length direction, that is horizontal direction has the long Long Circle or the ellipse of major diameter direction, can make the pressure direction that flows on the plate 32 in the back be major diameter direction unanimity, and then can reduce stress and concentrate on the situation of locating around the hole of pin-and-hole 100 along pin-and-hole 100.
Come, when carrying out moulding, very big tensile stress is created on the surface of rear board 32 (from mold mounting plate 31 position farthest) again.Therefore, set only for a short time, also can obtain as above-mentioned effect even the cross sectional shape of pin-and-hole 100 is designed to Long Circle or oval-shaped scope (the pin-and-hole end 100a degree of depth).In addition, as long as the cross sectional shape of pin-and-hole 100 is designed to Long Circle or ellipse, can not change to till the given depth place by cross sectional shape, shown in Fig. 3 (b) yet, perhaps also can the diminishing cone-shaped of its area of section till the given depth place, as Fig. 3 (c).
And, be preferably: be the part 100b of Long Circle or the more close mold mounting plate 31 of oval-shaped pin-and-hole end 100a than cross sectional shape, its internal diameter is a bit larger tham the diameter of stripper pin and is the constant straight shape hole of cross sectional shape, so that stripper pin supports with axis direction with being free to slide.
So framework does not cause the weight of dynamic pressure plate 3 to increase, and can reduce being created in the stress of locating around the pin-and-hole 100.
Scheme shown in Figure 4 is in the back in the plate 32, to the recessed depression 50 of mold mounting plate 31, is formed near the formation part of pin-and-hole 100.Thus, be formed with the surperficial 32a of the part of pin-and-hole 100 in the back in the plate 32, be arranged in neutral surface than the more close dynamic pressure plate 3 of surperficial 32b of other parts (the distortion neutral surface that is produced when carrying out moulding, that is be face between being positioned among the surperficial 32a of mold mounting plate 31 and rear board 32).
In the plate 32, when carrying out moulding, more farther from mold mounting plate 31, tensile stress is big more in the back.So near the formation part of pin-and-hole 100, the surperficial 32b of rear board 32 is formed on the neutral surface than the more close dynamic pressure plate 3 of other part surfaces 32b, can reduce the tensile stress that is created on this part.
So framework does not cause the weight of dynamic pressure plate 3 to increase, and can reduce being created in the stress of locating around the pin-and-hole 100.
Scheme as shown in Figure 5, its framework is: near the formation part of pin-and-hole 100, breach 60 is formed on the rear board 32, so that be not formed with pin-and-hole 100 on the rear board 32 of the tensile stress that generation is very big when carrying out moulding.
Thus, pin-and-hole 100 also can for example be formed on the central rib 34 cylindraceous.Except central rib 34, can be provided for forming the special-purpose cylindrical portion or the wall shape portion of pin-and-hole 100, to extend to rear board 32 sides by mold mounting plate 31.
In addition, design jaggedly 60, therefore be not formed with pin-and-hole 100 on the plate 32 in the back, do not cause the weight of dynamic pressure plate 3 to increase, can avoid stress to be created in the problem of locating around the pin-and-hole 100.
So framework is producing on the rear board 32 of very big tensile stress when carrying out moulding, can reduce or avoid being subjected to being created in the influence of the stress of locating around pin-and-hole 100 pin-and-holes, and then can reduce the problem on the platen design.
Though in the above-described embodiment, do not break away from the various technical schemes of the interior proposition of scope of spirit of the present invention, be not limited to such scheme, the various modes of texturing of tolerable.
In addition, for the framework of dynamic pressure plate 3, be not limited to above-mentioned box, the present invention also goes for having on the dynamic pressure plate of various framework, also can obtain effect same as described above thus.
Add, though be the object description the solution of the present invention with injection (mo(u)lding) machine 1 in the above-mentioned embodiment, same mold closing mechanism also goes on the die casting machine.
In addition, do not breaking away under the spirit of the present invention, can accept or reject or optionally use the framework shown in the above-mentioned embodiment, perhaps can suitably change other frameworks.
Claims (17)
1. the pressing plate of an installation mold is characterized in that, comprises:
Mold mounting plate is used for installing described mould,
Rear board is oppositely arranged with described mold mounting plate, and,
Connecting portion is connected with pull bar at the place, four angles of described mold mounting plate and described rear board,
Be used for inserting the pin-and-hole that leads to stripper pin and be formed on described mold mounting plate and the described rear board, this stripper pin is used for the formed article that described mould forms is carried out the demoulding,
When applying the matched moulds thrust when using described mould to carry out moulding, on described rear board with described mold mounting plate away from a side place can reduce and result from the tensile stress of locating around the described pin-and-hole.
2. pressing plate according to claim 1 is characterized in that,
In described rear board, be formed with peripheral part thickness of described pin-and-hole, form greater than the thickness mode of other parts in the described rear board.
3. pressing plate according to claim 1 is characterized in that,
Described pin-and-hole at least on described rear board with described mold mounting plate away from a side place, its cross section forms Long Circle or ellipse.
4. pressing plate according to claim 3 is characterized in that,
Described pin-and-hole forms, and when a described mould of growing to a certain direction was installed on the described pressing plate, its major diameter direction was vertical with described mould than length direction.
5. pressing plate according to claim 3 is characterized in that,
Described pin-and-hole side place relative with described mold mounting plate on described rear board, its Cross section Design becomes the corresponding shape of face shaping with described stripper pin, so that described stripper pin can keep in its axis direction freely-movable.
6. pressing plate according to claim 1 is characterized in that,
Breach or to the recessed depression of described mold mounting plate is formed on and comprises in the described rear board in the zone that described pin-and-hole forms the position.
7. pressing plate according to claim 1 is characterized in that, more comprises:
The tubular rib is arranged between described mold mounting plate and the described rear board, and is positioned at the central authorities of described mold mounting plate and described rear board,
The diagonal angle ribs is arranged between described mold mounting plate and the described rear board, and is extended on the described connecting portion by described tubular rib respectively, and,
The periphery ribs is arranged between described mold mounting plate and the described rear board, and along the peripheral part of described mold mounting plate and described rear board, is arranged between the adjacent described connecting portion.
8. a mold closing mechanism is characterized in that, comprises:
The paired pressing plate of installation mold, and,
The pressing plate drive division, at least one side of described relatively paired pressing plate drives with advancing and retreat, with open or closed described mould,
Each pressing plate comprises:
Mold mounting plate is used for installing described mould,
Rear board is oppositely arranged with described mold mounting plate, and,
Connecting portion is connected with pull bar at the place, four angles of described mold mounting plate and described rear board,
Be used for inserting the pin-and-hole that leads to stripper pin and be formed on described mold mounting plate and the described rear board, this stripper pin is used for the formed article that described mould forms is carried out the demoulding,
When applying the matched moulds thrust when using described mould to carry out moulding, on described rear board with described mold mounting plate away from a side place can reduce and result from the tensile stress of locating around the described pin-and-hole.
9. mold closing mechanism according to claim 8 is characterized in that,
In described rear board, be formed with peripheral part thickness of described pin-and-hole, form greater than the thickness mode of other parts in the described rear board.
10. mold closing mechanism according to claim 8 is characterized in that,
Described pin-and-hole at least on described rear board with described mold mounting plate away from a side place, its cross section forms Long Circle or ellipse.
11. mold closing mechanism according to claim 10 is characterized in that,
Described pin-and-hole forms, and when a described mould of growing to a certain direction was installed on the described pressing plate, its major diameter direction was vertical with described mould than length direction.
12. mold closing mechanism according to claim 10 is characterized in that,
Described pin-and-hole side place relative with described mold mounting plate on described rear board, its Cross section Design becomes the corresponding shape of face shaping with described stripper pin, so that described stripper pin can keep in its axis direction freely-movable.
13. an injection (mo(u)lding) machine is characterized in that, comprises:
The paired pressing plate of installation mold,
The pressing plate drive division, at least one side of described relatively paired pressing plate drives with advancing and retreat, with open or closed described mould, and,
Injection cylinder is injected in molding mass in the die cavity of described mould,
Each pressing plate comprises:
Mold mounting plate is used for installing described mould,
Rear board is oppositely arranged with described mold mounting plate, and,
Connecting portion is connected with pull bar at the place, four angles of described mold mounting plate and described rear board,
Be used for inserting the pin-and-hole that leads to stripper pin and be formed on described mold mounting plate and the described rear board, this stripper pin is used for the formed article that described mould forms is carried out the demoulding,
When applying the matched moulds thrust when using described mould to carry out moulding, on described rear board with described mold mounting plate away from a side place can reduce and result from the tensile stress of locating around the described pin-and-hole.
14. injection (mo(u)lding) machine according to claim 13 is characterized in that,
In described rear board, be formed with peripheral part thickness of described pin-and-hole, form greater than the thickness mode of other parts in the described rear board.
15. injection (mo(u)lding) machine according to claim 13 is characterized in that,
Described pin-and-hole at least on described rear board with described mold mounting plate away from a side place, its cross section forms Long Circle or ellipse.
16. injection (mo(u)lding) machine according to claim 15 is characterized in that,
Described pin-and-hole forms, and when a described mould of growing to a certain direction was installed on the described pressing plate, its major diameter direction was vertical with described mould than length direction.
17. injection (mo(u)lding) machine according to claim 15 is characterized in that,
Described pin-and-hole side place relative with described mold mounting plate on described rear board, its Cross section Design becomes the corresponding shape of face shaping with described stripper pin, so that described stripper pin can keep in its axis direction freely-movable.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007240900A JP4625489B2 (en) | 2007-09-18 | 2007-09-18 | Mold platen, mold clamping device, injection molding machine |
| JP2007-240900 | 2007-09-18 | ||
| JP2007240900 | 2007-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010623113.9A Division CN102161228B (en) | 2007-09-18 | 2008-09-10 | Mold platen, mold clamping device, injection molding machine |
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| CN101391478A true CN101391478A (en) | 2009-03-25 |
| CN101391478B CN101391478B (en) | 2012-08-08 |
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| CN2008102129312A Active CN101391478B (en) | 2007-09-18 | 2008-09-10 | Pressing board, clamping device and injection moulding machine |
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| CN110062688A (en) * | 2017-10-06 | 2019-07-26 | 宇菱塑胶科技有限公司 | Pressing plate, mold closing mechanism, injection machine |
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| JP5553671B2 (en) * | 2010-04-20 | 2014-07-16 | 本田技研工業株式会社 | Mold equipment |
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| JPH05131503A (en) * | 1991-11-08 | 1993-05-28 | Mitsubishi Heavy Ind Ltd | Strength improvement method for opening in structural component |
| US5593711A (en) * | 1995-06-07 | 1997-01-14 | Husky Injection Molding Systems Ltd. | Uniformly compressible platen |
| CN1059150C (en) * | 1996-09-04 | 2000-12-06 | 哈斯基注模系统有限公司 | Uniformly compressible platen |
| JP2000301580A (en) * | 1999-04-22 | 2000-10-31 | Meiki Co Ltd | Ejector device for injection molding machine |
| US7080978B2 (en) * | 2003-04-17 | 2006-07-25 | Husky Injection Molding Systems Ltd. | Platen |
-
2007
- 2007-09-18 JP JP2007240900A patent/JP4625489B2/en active Active
-
2008
- 2008-09-10 CN CN201010623113.9A patent/CN102161228B/en active Active
- 2008-09-10 CN CN2008102129312A patent/CN101391478B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110062688A (en) * | 2017-10-06 | 2019-07-26 | 宇菱塑胶科技有限公司 | Pressing plate, mold closing mechanism, injection machine |
| CN110062688B (en) * | 2017-10-06 | 2021-02-26 | 宇菱塑胶科技有限公司 | Platen, mold clamping device, and injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102161228B (en) | 2014-08-20 |
| JP4625489B2 (en) | 2011-02-02 |
| JP2009067027A (en) | 2009-04-02 |
| CN102161228A (en) | 2011-08-24 |
| CN101391478B (en) | 2012-08-08 |
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