CN104354273B - A kind of mould of plastics with the flash structure that can be automatically separated - Google Patents
A kind of mould of plastics with the flash structure that can be automatically separated Download PDFInfo
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- CN104354273B CN104354273B CN201410577195.6A CN201410577195A CN104354273B CN 104354273 B CN104354273 B CN 104354273B CN 201410577195 A CN201410577195 A CN 201410577195A CN 104354273 B CN104354273 B CN 104354273B
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- die
- length
- flash
- tunnel gate
- reverse tunnel
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Classifications
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- 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
- B29C45/2669—Moulds with means for removing excess material, e.g. with overflow cavities
-
- 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
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of mould of plastics with the flash structure that can be automatically separated, die cavity is by unilateral sprue and runners UNICOM, plastics in runner are punished two strands from unilateral cast gate and are entered die cavity and converge filling end, also including being arranged on flash structure and the flash push rod thereof filling end, flash structure includes boss and concave station；Boss includes and the material overflow cavity of die cavity UNICOM, and one end of material overflow cavity is provided with reverse tunnel gate, and reverse tunnel gate is connected with the filling end of die cavity, and the other end of material overflow cavity and balance pipe UNICOM, balance pipe is equal with the length of reverse tunnel gate；Jogger hole is between reverse tunnel gate and balance pipe, and the length of jogger hole is more than the length of balance pipe；Described flash push rod is fixed in thimble fixed plate.The present invention effectively solves the problem inadequate because welding product strength that trace causes, and solve flash structure is automatically separated problem simultaneously.
Description
Technical field
The present invention relates to a kind of mould of plastics with the flash structure that can be automatically separated.
Background technology
One, circular product:
Fig. 1 is intended to seek survival the structural representation of the product produced, and its material is PA66 (nylon66 fiber), and a diameter of 41.4mm, it is desirable to after injection phenomenon of rupture can not occur under conditions of in use bearing certain load.
Fig. 2 is to produce the product mould structure schematic diagram in traditional mould four cave, including runner 1, product 2, unilateral cast gate 3.
Fig. 3 is the enlarged drawing at the B of Fig. 2, as can be seen from this figure, plastics enter along unilateral cast gate 3 in the die cavity of product at C can be divided into two strands, one flows along the direction of D arrow indication, one flows along the direction of E arrow indication, finally converging at filling end F, single-side inlet all has such charging feature.
Two, traditional moulds:
Traditional moulds uses tunnel gate charging, product ejects front dynamic model side three-dimensional shaft side figure as shown in Figure 5, after mould die sinking, under the effect that ejects of injection machine, runner ejector pin 6, sprue puller 7 and thimble 14 that driving thimble backing plate 4 and thimble fixed plate 5 drive are fixed between thimble backing plate 4 and thimble fixed plate 5 are together by product 2 and runner 1 ejection die, as shown in Figure 6, Figure 7.
Fig. 8 is the product three-dimensional shaft side figure with runner of traditional mould four cave mould production, plastics converge at the filling end F shown in Fig. 3, product 2 can be caused to be formed in Liang Gu plastics intersection and to weld trace F ', owing to welding the existence of trace F ', what plastics combined in this place will not be sacrifices consisting of an ox, a sheep and a pig, product 2 insufficient strength in this place, it is impossible to bear normal service load.In use, product can be caused to rupture because of the insufficient strength at this, the defect place of this most this mould.
The parting line G of the original product 2a produced by traditional moulds is straight line, as shown in Figure 9.
Summary of the invention
For overcoming the traditional product utilizing existing mould to produce can produce the shortcoming welding trace thus cause product strength to weaken, the present invention provides a kind of mould of plastics with the flash structure that can be automatically separated.
The technical solution used in the present invention is:
A kind of mould of plastics with the flash structure that can be automatically separated; including involutory moving platen and solid plate; described moving platen is along longitudinally reciprocating motion; complete die sinking or matched moulds; moving platen is provided with dynamic model die; solid plate is provided with cover half die, and the die joint between dynamic model die and cover half die is provided with the forming recess of plastic product, and described die cavity connects casting mechanism；
Described moving platen is provided with thimble backing plate and the thimble fixed plate of lengthwise movement, and described thimble backing plate is connected in described thimble fixed plate；Described thimble fixed plate is provided with the runner ejector pin for ejecting runner, for the thimble of ejecting product and sprue puller；
Described die cavity is punished two strands from unilateral cast gate and is entered die cavity by unilateral sprue and runners UNICOM, the plastics in described runner and converge filling end.
Also including being arranged on flash structure and the flash push rod thereof filling end, described flash structure includes the boss being arranged on dynamic model die and the concave station being arranged on cover half die, and described boss and described concave station can be involutory；
Described boss includes and the material overflow cavity of described die cavity UNICOM, one end of described material overflow cavity is provided with reverse tunnel gate, described reverse tunnel gate is connected with the filling end of described die cavity, the other end of described material overflow cavity and balance pipe UNICOM, the distance defined between described reverse tunnel gate both ends of the surface is length, and described balance pipe is equal with the length of described reverse tunnel gate；
The bottom of described material overflow cavity is additionally provided with the jogger hole for inserting flash push rod, and described jogger hole is between described reverse tunnel gate and balance pipe, and the length of described jogger hole is more than the length of balance pipe；
The fixing end of described flash push rod is fixed in thimble fixed plate.
Preferably, length 2 4mms longer than the length of balance pipe of described centre hole, length 2 4mms longer than the length of reverse tunnel gate of described jogger hole.
Beneficial effects of the present invention is embodied in: the flash structure that the present invention uses, effectively solve the problem inadequate because welding product strength that trace problem causes, flash structure and die cavity are by reverse tunnel gate UNICOM simultaneously, can be automatically separated with product, solve flash structure is automatically separated problem, it is possible to achieve fully-automatic production, and the present invention is applicable not only to make the type product, it is also applied for making other products having similar demand, is a kind of technology being worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is intended to seek survival the structural representation of the product produced, and wherein Fig. 1 a is the front view of product, and Fig. 1 b is the top view of product, Fig. 1 c be in Fig. 1 b A-A to sectional view.
Fig. 2 is to produce the product mould structure schematic diagram in traditional mould four cave.
Fig. 3 is enlarged drawing at the B of Fig. 2.
Fig. 4 a is the stationary mould for mould side structure schematic diagram in traditional mould four cave, and Fig. 4 b is the mould dynamic model side structure schematic diagram in traditional mould four cave, Fig. 4 c be in Fig. 4 b A-A to generalized section.
Fig. 5 is the traditional moulds dynamic model side three-dimensional shaft side figure before product ejects.
Fig. 6 is that runner ejector pin after traditional moulds die sinking, sprue puller and thimble are by schematic perspective view when product and runner ejection die.
Fig. 7 represent runner ejector pin after traditional moulds die sinking, sprue puller and thimble by mould when product and runner ejection die the A-A shown in Fig. 4 b to cross-sectional schematic.
Fig. 8 is the product three-dimensional shaft side figure with runner of traditional mould four cave mould production.
Fig. 9 is the lateral plan of the product produced by traditional moulds.
Figure 10 is the structural representation of the cover half side of the present invention.
Figure 11 is the structural representation of the dynamic model side of the present invention.
Figure 12 be in Figure 11 A-A to generalized section.
Figure 13 is enlarged diagram at Q in Figure 10.
Figure 14 is enlarged diagram at P in Figure 11.
Figure 15 is the boss of present invention position view on dynamic model side
Figure 16 is the concave station of present invention position view on cover half side
Figure 17 is enlarged diagram at R in Figure 12.
Figure 18 is that product of the present invention, runner, the axle of flash structure measure intention.
Figure 19 is the plane figure schematic diagram of the runner in the present invention one cave, product, flash structure.
Figure 20 present invention after die sinking runner ejector pin, sprue puller and thimble, flash push rod respectively by schematic perspective view when product, runner, flash structure ejection die.
Figure 21 present invention after die sinking runner ejector pin, sprue puller and thimble, flash push rod respectively by mould when product, runner, flash structure ejection die the A-A shown in Figure 11 to cross-sectional schematic.
Figure 22 is enlarged drawing at M in Figure 21.
Figure 23 is Figure 17 schematic diagram under ejecting state.
Figure 24 is the product structure schematic diagram that the present invention produces.
Wherein: runner 1, product 2, original product 2a, new product 2b, unilateral cast gate 3, thimble backing plate 4, thimble fixed plate 5, runner ejector pin 6, sprue puller 7, moving platen 8, dynamic model die 9, solid plate 10, cover half die 11, sprue bush 12, cover half fixed plate 13, thimble 14, flash structure 15, concave station 151, boss 152, material overflow cavity 1521, reversely tunnel gate 1522, balance pipe 1523, jogger hole 1524, flash push rod 16；Length L1 of balance pipe, length L2 of jogger hole, length L3 of reverse tunnel gate, fill end F, weld trace F ', flash structure and product burble point J, product and unilateral cast gate burble point K.
Detailed description of the invention
Referring to the drawings, the present invention is further illustrated:
A kind of mould of plastics with the flash structure that can be automatically separated; including involutory moving platen 8 and solid plate 10; described moving platen 8 is along longitudinally reciprocating motion; complete die sinking or matched moulds; moving platen 8 is provided with dynamic model die 9; solid plate 10 is provided with cover half die 11, and the die joint between dynamic model die 9 and cover half die 11 is provided with the forming recess of plastic product, and described die cavity connects casting mechanism；
Described moving platen 8 is provided with thimble backing plate 4 and the thimble fixed plate 5 of lengthwise movement, and described thimble backing plate 4 is connected in described thimble fixed plate 5；Described thimble fixed plate 5 is provided with the runner ejector pin 6 for ejecting runner 1, for the thimble 14 of ejecting product 2 and sprue puller 7；
Described die cavity is punished two strands from unilateral cast gate 3 and is entered die cavity by unilateral cast gate 3 and runner 1 UNICOM, the plastics in described runner 1 and converge at end F filling.
Also including being arranged on and fill the flash structure 15 at end F and flash push rod 16 thereof, described flash structure 15 includes the boss 152 being arranged on dynamic model die 9 and the concave station 151 being arranged on cover half die 11, and described boss 152 and described concave station 151 can be involutory；
Described boss 152 includes and the material overflow cavity 1521 of described die cavity UNICOM, one end of described material overflow cavity 1521 is provided with reverse tunnel gate 1522, described reverse tunnel gate 1522 is connected at the filling end F of described die cavity, the other end of described material overflow cavity 1521 and balance pipe 1523 UNICOM, the distance defined between described reverse tunnel gate 1522 both ends of the surface is length, and described balance pipe 1523 is equal with the length of described reverse tunnel gate 1522；
The bottom of described material overflow cavity 1521 is additionally provided with the jogger hole 1524 for inserting flash push rod 16, and described jogger hole 1524 is between described reverse tunnel gate 1522 and balance pipe 1523, and the length of described jogger hole 1524 is more than the length of balance pipe 1523；
The fixing end of described flash push rod 16 is fixed in thimble fixed plate 5.
Length L2 2 4mms longer than length L1 of balance pipe of described jogger hole.
Length L2 2 4mms longer than length L3 of reverse tunnel gate of described jogger hole.
Described reverse tunnel gate 1522 is the same with conventional tunnel gate structure, but because conventional tunnel gate is for feeding to die cavity, and described reverse tunnel gate 1522 is used as the discharging opening of die cavity, in order to be different from the material feeding function of conventional tunnel gate, special referred to as reverse tunnel gate 1522.The microcephaly of described reverse tunnel gate 1522 is connected at the filling end F of described die cavity, and defining the distance between the microcephaly of described reverse tunnel gate 1522 and major part both ends of the surface is length.
Plastics in runner 1 are poured in down a chimney in entrance flash structure 15 by described reverse tunnel gate 1522 after unilateral cast gate 3 is punished two strands of entrance die cavities and converged at filling end F, and reverse tunnel gate 1522 is contrary with the flow direction of plastics in conventional tunnel gate.
As shown in Figure 19, plastics are divided into two strands after entering the die cavity of product 2 along the suitable unilateral cast gate 3 in C direction, and one flows along the direction of arrow D indication, and one flows along the direction of arrow E indication, finally converges at filling end F；Converging rear plastics and continue flowing, the flow direction along arrow G indication enters material overflow cavity 1521, until filling up in flash structure 15.So, the last filling position of plastics is changed into the end of the arrow G indication of flash structure 15 by filling end F before, so plastics are after flowing through at original filling end F, also may proceed to flow in flash structure 15, no longer there will be on product produce because two strands of plastics cross weld trace F ', thus ensure that the intensity of product, flash structure 15 serves the effect of transfer plastics docking location, and effectively eliminated product 2 welds trace F '.
As shown in Figure 22, runner 1 and product 2 due to the shear action of cast gate, in ejection process, can be automatically separated and come at K.In like manner, it is connected by reverse tunnel gate 1522 between flash structure 15 with product 2, in ejection process, flash structure with at product burble point J exist similar cast gate shear action under, flash structure 15 also can be automatically separated with product 2, the most just achieves being automatically separated of flash structure 15 and product 2.
To sum up, what flash structure 15 the most effectively eliminated product 2 welds trace F ', solves the problem that product 2 causes easy fracture because welding trace F '.Meanwhile, can be automatically separated with product 2 again during mould ejection, it is achieved that the full-automatic mode produced.
What Figure 24 showed is the lateral plan of the new product 2b that make use of the present invention to produce, the parting line G of product 2b has a protruding step portion molded line N, this step portion molded line N is the parting line formed because of the involutory of boss 152 shown in the concave station 151 and Figure 14 shown in Figure 13, and outline line J ' is the profile that flash structure as shown in figure 22 stays with product burble point J.The use of product will not be had an impact by step portion molded line N and outline line J '.
For length L1 of balance pipe, length L2 of jogger hole, length L3 of reverse tunnel gate, need to meet: L1=L3, L2 L1, L2 > L3.
Preferred: L1=L3, L2=L1+2～4mm, L2=L3+2～4mm.
Require L1=L3, be to ensure that the plastics of the reverse tunnel gate 1522 and balance pipe 1523 that are positioned at material overflow cavity 1521 two ends can depart from dynamic model die 9, it is ensured that depart from the steady of process simultaneously.
This is because flash structure 15 is during being ejected by flash push rod 16, there will be elastic deformation, reversely the plastics in tunnel gate 1522 can deform, and the plastics being in the balance pipe 1523 of the flash structure other end can balance the active force that the plastics in reverse tunnel gate 1522 produce because of deformation.So as L1=L3, can guarantee that the disengaging dynamic model die 9 that the plastics in reverse tunnel gate 1522 balance with the plastics in balance pipe 1523, it is ensured that eject the stationarity of action simultaneously.
Require L2=L1+2～4mm, L2=L3+2～4mm, it is to guarantee when the tunnel gate at two ends departs from dynamic model die 9 with the plastics in balance pipe 1523, the plastics of the jogger hole 1524 being positioned at centre there remains the degree of depth of 2～4mm, flash structure 15 can also be fixed in dynamic model die 9 firmly by this 2～4mm part not ejected, it is ensured that whole flash structure 15 departs from the stationarity of the moment of dynamic model die 9 at reverse tunnel gate 1522 with the plastics in balance pipe 1523.Steadily carry out so whole ejection process is substep, after the plastics in the plastics in reverse tunnel gate 1522 with balance pipe 1523 are balanced and eject dynamic model die 9, re-use flash push rod 16 by flash structure 15 steadily eject dynamic model die 9, product 2 is also under the effect of thimble 14 simultaneously, is ejected dynamic model die 9.So just can obtain the new product 2b shown in Figure 24.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept; protection scope of the present invention is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also and in those skilled in the art according to present inventive concept it is conceivable that equivalent technologies means.
Claims (2)
1. with a mould of plastics for the flash structure that can be automatically separated, including involutory
Moving platen and solid plate, described moving platen, along longitudinally reciprocating motion, completes die sinking or matched moulds,
Moving platen is provided with dynamic model die, and solid plate is provided with cover half die, dynamic model die and cover half mould
Die joint between benevolence is provided with the forming recess of plastic product, and described die cavity connects casting machine
Structure；
Described moving platen is provided with thimble backing plate and the thimble fixed plate of lengthwise movement, described top
Pincushion plate is connected in described thimble fixed plate；Described thimble fixed plate is provided with for ejecting stream
The runner ejector pin in road, for the thimble of ejecting product and sprue puller；
Described die cavity is by unilateral sprue and runners UNICOM, and the plastics in described runner water from one side
Mouth punishment two strands enters die cavities and converges filling end；
It is characterized in that:
Also including being arranged on flash structure and the flash push rod thereof filling end, described flash is tied
Structure includes the boss being arranged on dynamic model die and the concave station being arranged on cover half die, described convex
Platform and described concave station can be involutory；
Described boss includes and the material overflow cavity of described die cavity UNICOM, and one end of described material overflow cavity is provided with
Reversely tunnel gate, described reverse tunnel gate is connected with the filling end of described die cavity, institute
State the other end and the balance pipe UNICOM of material overflow cavity, define between described reverse tunnel gate both ends of the surface
Distance is the length of reverse tunnel gate, described balance pipe and the length of described reverse tunnel gate
Equal；
The bottom of described material overflow cavity is additionally provided with the jogger hole for inserting flash push rod, described push rod
Hole is between described reverse tunnel gate and balance pipe, and the length of described jogger hole is more than balance
The length of pipe；
The fixing end of described flash push rod is fixed in thimble fixed plate.
A kind of moulding with the flash structure that can be automatically separated
Material mould, it is characterised in that: length 2 4mms longer than the length of balance pipe of described centre hole,
Length 2 4mms longer than the length of reverse tunnel gate of described jogger hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577195.6A CN104354273B (en) | 2014-10-24 | 2014-10-24 | A kind of mould of plastics with the flash structure that can be automatically separated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577195.6A CN104354273B (en) | 2014-10-24 | 2014-10-24 | A kind of mould of plastics with the flash structure that can be automatically separated |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104354273A CN104354273A (en) | 2015-02-18 |
| CN104354273B true CN104354273B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410577195.6A Active CN104354273B (en) | 2014-10-24 | 2014-10-24 | A kind of mould of plastics with the flash structure that can be automatically separated |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924550A (en) * | 2015-07-13 | 2015-09-23 | 长春富维—江森自控汽车饰件系统有限公司 | Material overflow well structure of air-assisted injection mold |
| CN105034283A (en) * | 2015-09-17 | 2015-11-11 | 京东方科技集团股份有限公司 | Mold, light guiding plate, manufacturing method and device for mold and light guiding plate and display module |
| CN107672116A (en) * | 2017-11-22 | 2018-02-09 | 科成精密模塑科技无锡有限公司 | Injection mold system with recovery function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328389A (en) * | 2011-07-15 | 2012-01-25 | 凡嘉科技（无锡）有限公司 | Mould structure of plastic injection product |
| DE102012001410A1 (en) * | 2012-01-25 | 2013-07-25 | Richard Warnking | Device for manufacture of mold components from resilient resilient elastomer, has tear groove in which elastomeric material remains and separation ridge break down at mold components when removing mold component from molding tools |
| CN203580012U (en) * | 2013-11-07 | 2014-05-07 | 天津国丰模具有限公司 | Bicycle front fork processing mechanism |
| CN204235829U (en) * | 2014-10-24 | 2015-04-01 | 宁波天龙电子股份有限公司 | A kind of mould of plastics of the flash structure with can automatically be separated |
-
2014
- 2014-10-24 CN CN201410577195.6A patent/CN104354273B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328389A (en) * | 2011-07-15 | 2012-01-25 | 凡嘉科技（无锡）有限公司 | Mould structure of plastic injection product |
| DE102012001410A1 (en) * | 2012-01-25 | 2013-07-25 | Richard Warnking | Device for manufacture of mold components from resilient resilient elastomer, has tear groove in which elastomeric material remains and separation ridge break down at mold components when removing mold component from molding tools |
| CN203580012U (en) * | 2013-11-07 | 2014-05-07 | 天津国丰模具有限公司 | Bicycle front fork processing mechanism |
| CN204235829U (en) * | 2014-10-24 | 2015-04-01 | 宁波天龙电子股份有限公司 | A kind of mould of plastics of the flash structure with can automatically be separated |
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| CN104354273A (en) | 2015-02-18 |
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