CN102848531B

CN102848531B - Secondary angle core-pulling die with nitrogen spring

Info

Publication number: CN102848531B
Application number: CN201210353554.0A
Authority: CN
Inventors: 林亚东
Original assignee: TONTEC PRECISION MOLD (SUZHOU) CO Ltd
Current assignee: TONTEC PRECISION MOLD (SUZHOU) CO Ltd
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2014-10-15
Anticipated expiration: 2032-09-21
Also published as: CN102848531A

Abstract

The invention provides a secondary angle core-pulling die with a nitrogen spring. The die comprises, from top to bottom: an upper fixation plate, a cavity plate with a cavity, a core plate with a core, an ejector retainner plate and a lower fixation plate in order. The secondary angle core-pulling die also includes: a cavity pushing plate, which is arranged between the upper fixation plate and the cavity plate and can make up-and-down motion, is in connection with first angle pins able to make side-to-side motion, and is fixedly provided with first slide guiding blocks corresponding to the first angle pins; an oil hydraulic cylinder, which is fixedly disposed on the cavity plate and has its piston rod connected to the cavity pushing plate; the nitrogen spring, which is fixedly arranged on the upper fixation plate and the plunger rod of which abuts downward against the upper end face of the cavity plate; a buckling machine, which consists of a locking seat fixedly disposed on the core plate and a hooked plug pin fixedly arranged on the upper fixation plate; and a second angle pin that is able to make side-to-side motion and connected to the ejector retainner plate, and a second slide guiding block fixedly arranged on the core plate corresponding to the second angle pin.

Description

There is the oblique core-pulling die of secondary of nitrogen spring

Technical field

The present invention relates to a kind of injection mold, particularly a kind of oblique core-pulling die of secondary that adopts nitrogen spring control die sinking.

Background technology

Refer to Fig. 1 and Fig. 2, it illustrates respectively a kind of the first state three-dimensional structure diagram and the second state three-dimensional structure diagram of special-shaped cover shape plastic cement products 10.Inner side the right and left of the upper surface of this special-shaped cover shape plastic cement products 10 has respectively upside barb 11,12, and its lower surface inner side also has downside barb 13.Lateral surface barb on general plastic cement products can withdraw moulding by design slide block mechanism on mould, but due to the reason of product structure, in the situation that product inner space is less, cannot design slide block mechanism, so just adopt the oblique core drawing mechanism that taper pin exits to exit moulding.And two inner side surfaces up and down of this plastic cement products 10 all have barb, and product structure is less, do not have enough spaces in mould, to design slide block mechanism and exit barb described in moulding, therefore all need to adopt taper pin to exit, just need to adopt the oblique core-pulling die of secondary to carry out this product 10 of moulding.And in prior art, due to mechanism's complexity, difficult design, current oblique core-pulling die generally all can only once tiltedly be loosed core.

And the oblique core-pulling die of design secondary all needs to control the order of mould secondary die sinking, in Design of Dies, control die sinking order and normally adopt the mechanisms such as shutter, deduction (being also mode locker) and Compress Spring.Compress Spring needs the part of first die sinking for positive opening, in the mould of twice-die-opening or repeatedly die sinking, use in a large number.But Compress Spring in use, not only need larger precompressed amount when matched moulds, and in the process of strain, suppress the state in continuous variation, after repeatedly using, Compress Spring easily lost efficacy, make the stability decreases of mould structure, and the service life of Compress Spring is shorter, usually need it to change, cost is higher.

Summary of the invention

In view of this, the object of this invention is to provide a kind of Stability Analysis of Structures, the safe and reliable oblique core-pulling die of secondary.

For achieving the above object, the invention provides a kind of oblique core-pulling die of secondary with nitrogen spring, comprise successively from top to bottom upper mounted plate, have mother module core caster, there is male model plate, ejector retainner plate and the bottom plate of male die core, it is characterized in that, the oblique core-pulling die of described secondary also comprises:

Master mold push pedal, it can be arranged between fixed plate and described caster up and downly, in described master mold push pedal, be connected with can side-to-side movement the first taper pin, under described the first taper pin is oblique, run through described caster and mother module core and insert in mold cavity, on described caster, corresponding described the first taper pin is installed with the first slider guide;

Oil hydraulic cylinder, it is fixedly arranged on described caster, and its piston rod is connected in described master mold push pedal;

Nitrogen spring, it is fixedly arranged on fixed plate, and its plunger rod pushes against the upper surface of described caster downwards;

Deduction, it comprises the locking bed that is fixedly arranged on described male model plate and is fixedly arranged on the hooked latch on fixed plate, described hooked latch can move up and down and be arranged on described locking bed;

Wherein, on described ejector retainner plate, be connected with can side-to-side movement the second taper pin, described the second taper pin runs through obliquely described male model plate and male die core and inserts in mold cavity, on described male model plate, corresponding described the second taper pin is installed with the second slider guide.

The operation principle of the oblique core-pulling die of secondary that the present invention has nitrogen spring is as follows: when die sinking for the first time, injection machine drives male model plate and bottom plate to move downward, eject downwards under effect at the plunger rod of nitrogen spring, fixed plate and caster first separate, caster is along with male model plate moves downward simultaneously, described master mold push pedal is along with caster synchronously moves downward, until the hooked latch of described deduction fastens described locking bed, and described caster and described master mold push pedal stop motion, when die sinking for the second time, male model plate and bottom plate continue to move downward, described caster separates with described male model plate, meanwhile, the piston rod of described oil hydraulic cylinder is replied and is pulled described master mold push pedal to move downward downwards, described the first taper pin exits the barb of product upper surface inner side under the promotion of described the first slider guide to mould inner slide, then the top rod of mould upwards ejects, promoting described ejector retainner plate moves upward, described the second taper pin exits the downside barb of product lower surface inner side under the effect of described the second slider guide to product inner slide, thimble on described ejector retainner plate is by product ejection device simultaneously.

Compared to prior art, a kind of oblique core-pulling die of secondary with nitrogen spring provided by the invention is by twice die sinking, carry out the secondary process of tiltedly loosing core and exit respectively the barb of plastic cement products upper surface and lower surface, and adopt nitrogen spring to control die sinking, make mould structure more reliable and more stable.On the other hand, than common Compress Spring, suppressing of nitrogen spring is large, and its pressure in stroke keeps substantially constant, takes up room little, and precompressed amount is little, and long service life is safe and reliable, saves cost.

Brief description of the drawings

Accompanying drawing 1 is a kind of the first state three-dimensional structure diagram of special-shaped cover shape plastic cement products.

Accompanying drawing 2 is a kind of the second state three-dimensional structure diagram of special-shaped cover shape plastic cement products.

The front view that accompanying drawing 3 is a kind of oblique core-pulling die of secondary with nitrogen spring of the present invention.

Accompanying drawing 4 is a kind of oblique core-pulling die of secondary structure cutaway view of die opening state for the first time with nitrogen spring of the present invention.

Accompanying drawing 5 is a kind of oblique core-pulling die of secondary structure cutaway view of die opening state for the second time with nitrogen spring of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.

Refer to Fig. 1 to Fig. 5, the invention provides a kind of oblique core-pulling die of secondary with nitrogen spring, be used for exiting forming plastic cement product 10, inner side the right and left of the upper surface of described product 10 has respectively the left barb 11 of upside, the right barb 12 of upside, and its lower surface inner side also has downside barb 13.

The oblique core-pulling die of described secondary comprises upper mounted plate 100 from top to bottom successively, have the caster 200 of mother module core 210, have male model plate 300, ejector retainner plate 400 and the bottom plate 500 of male die core 310, and the oblique core-pulling die of described secondary also comprises master mold push pedal 220, oil hydraulic cylinder 230, nitrogen spring 110, deduction.

Described master mold push pedal 220 can be arranged between fixed plate 100 and described caster 200 up and downly, in described master mold push pedal 220, the left and right sides is connected with respectively the first taper pin 221 that can side-to-side movement, under described the first taper pin 221 is oblique, run through described caster 200 and mother module core 210 and insert in mold cavity, on described caster 200, corresponding described the first taper pin 221 is installed with the first slider guide 222.In described master mold push pedal 220, two the first taper pins 221 of the left and right sides are respectively used to exit the shaped article left barb 11 of 10 upside and the right barb 12 of upside.

Described oil hydraulic cylinder 230 is fixedly arranged on described caster 200, and its piston rod 231 is connected in described master mold push pedal 220.

Described nitrogen spring 110 is fixedly arranged on fixed plate 100, and its plunger rod 111 pushes against the upper surface of described caster 200 downwards.

Described deduction comprises the locking bed 320 being fixedly arranged on described male model plate 300 and is fixedly arranged on the hooked latch 120 on fixed plate 100, and described hooked latch 120 can move up and down and be arranged on described locking bed 320.

On described ejector retainner plate 400, be connected with can side-to-side movement the second taper pin 410, described the second taper pin 410 runs through obliquely described male model plate 300 and male die core 310 and inserts in mold cavity, and on described male model plate 300, corresponding described the second taper pin 410 is installed with the second slider guide 411.

When die sinking for the first time, injection machine drives male model plate 300 and bottom plate 500 to move downward, eject downwards under effect at the plunger rod 111 of nitrogen spring 110, upper mounted plate 100 and caster 200 first separate, caster 200 is along with male model plate 300 moves downward simultaneously, described master mold push pedal 220 is along with caster 200 synchronously moves downward, until the hooked latch 120 of described deduction fastens described locking bed 320, and described caster 200 and described master mold push pedal 220 stop motions.

When die sinking for the second time, male model plate 300 and bottom plate 500 continue to move downward, described caster 200 separates with described male model plate 300, meanwhile, the piston rod 231 of described oil hydraulic cylinder 230 is replied and is pulled described master mold push pedal 220 to move downward downwards, described the first taper pin 221 exits the left barb 11 of upside of product 10 upper surface inner sides under the promotion of described the first slider guide 222 to mould inner slide, the right barb 12 of upside, then the top rod of mould upwards ejects, promoting described ejector retainner plate 400 moves upward, described the second taper pin 410 exits the downside barb 13 of product 10 lower surfaces under the effect of described the second slider guide 411 to product inner slide, thimble on described ejector retainner plate 400 is by product 10 ejection devices simultaneously.

Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims

1. there is the oblique core-pulling die of secondary of nitrogen spring, comprise successively from top to bottom upper mounted plate, have mother module core caster, there is male model plate, ejector retainner plate and the bottom plate of male die core, it is characterized in that, the oblique core-pulling die of described secondary also comprises: