CN109177057A - Combined injection mold - Google Patents
Combined injection mold Download PDFInfo
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- CN109177057A CN109177057A CN201810930937.7A CN201810930937A CN109177057A CN 109177057 A CN109177057 A CN 109177057A CN 201810930937 A CN201810930937 A CN 201810930937A CN 109177057 A CN109177057 A CN 109177057A
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- parts
- inner sleeve
- powder
- housing
- injection mold
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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
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to mould applications, disclose Combined injection mold, including upper die and lower die, upper mold includes the first inner sleeve and the first housing, lower die includes the second inner sleeve and the second housing, first inner sleeve is embedded in the first housing, second inner sleeve is embedded in the second housing, the material for making the first inner sleeve and the second inner sleeve includes the component of following parts by weight: 90-100 parts of epoxy powder, 80-85 parts of polyvinyl chloride powder, 20-40 parts of aluminium-hydroxide powder, 25-30 parts of iron powder, 40-45 parts of maleic anhydride powder, 9.7-10.6 parts of pitch, 60-80 parts of SiO 2 powder；In order to solve to exist in the prior art the at high cost of the first inner sleeve or the second inner sleeve, and intensity and the low problem of impact strength, this programme is by being added a large amount of epoxy resin, polyvinyl chloride and silica, reduce the addition of aluminium hydroxide and iron, so that production the first inner sleeve perhaps the second inner sleeve cost reduction also enhance the intensity and impact resistance of the first inner sleeve or the second inner sleeve produced.
Description
Technical field
The present invention relates to mould applications, in particular to Combined injection mold.
Background technique
The injection molding of engineering plastics needs to carry out under high temperature and pressure, and the material as injection mold inner sleeve generally needs
High temperature resistant, high pressure are wanted, shock resistance, hardness is higher, is unlikely to deform, and is in the prior art usually directly to use steel alloy as injection molding
The material of mold inner sleeve, steel alloy needs are made using a large amount of metals, and cost is generally higher.
In order to solve problem above, application No. is 201310438168.6 patents of invention for China, disclose a kind of epoxy
Resin cured matter includes: 80-85 parts of epoxy resin 6207# by weight；15-18 parts of epoxy resin 634#；230-250
The metallic aluminium powder of part；40-45 parts of maleic anhydride；5.6-5.9 the glycerol of part.In above scheme injection mold obtained
Set is in silver gray and has metallic luster, has good heat resistance, hardness, impact strength and compression strength, due to various originals
Material is cheap, therefore cost is relatively low.
Above scheme replaces metallics in the prior art by epoxy resin etc., solves and uses alloy in the prior art
The problem of steel higher cost, but above scheme there is problems, metallic aluminium powder additive amount is still more, cost still compared with
Height, the heat resistance, hardness, impact that main or metallic aluminium powder enhances the injection mold inner sleeve produced by above scheme are strong
Degree and compression strength, although epoxy resin is also to the heat resistance, hardness, punching of the injection mold inner sleeve produced by above scheme
Hit intensity and compression strength have certain contribution, but its contribution is smaller, but also the injection mold produced by above scheme
The hardness and impact strength of inner sleeve are general, and injection mold inner sleeve is caused to be easily damaged, unfavorable to use industrial production.
Summary of the invention
The invention is intended to provide it is a kind of can produce hardness and the high nonmetallic injection mold inner sleeve of impact strength, and can drop
The Combined injection mold of low cost.
Combined injection mold in this programme, including upper die and lower die, upper mold include the first inner sleeve and the first housing, lower die
Including the second inner sleeve and the second housing, the first inner sleeve is embedded in the first housing, and the second inner sleeve is embedded in the second housing, production
The material of first inner sleeve and the second inner sleeve includes the component of following parts by weight: 90-100 parts of epoxy powder, polychlorostyrene second
80-85 parts of alkene powder, 20-40 parts of aluminium-hydroxide powder, 25-30 parts of iron powder, 40-45 parts of maleic anhydride powder, pitch
9.7-10.6 parts, 60-80 parts of SiO 2 powder.
The technical principle of this programme are as follows: epoxy resin intensity is higher, and polyvinyl chloride toughness is higher, and the two combines and improves system
Perhaps the intensity of the second inner sleeve and impact resistance can be used as entire first inner sleeve or the production of the second inner sleeve to the first inner sleeve made
Basic material reconciles epoxy resin and polyvinyl chloride with maleic anhydride powder, so that epoxy resin and poly-
Vinyl chloride can more play its effect, silica be added, so that intensity, the anti-impact of the first inner sleeve or the second inner sleeve produced
Hitting property, high temperature resistant, high pressure and wearability are further promoted, and intensity, impact resistance are especially apparent, and are much more desirable as
The raw material of first inner sleeve or the second inner sleeve guide each material to mix, so that mixing is more uniform, are not easy to produce using pitch
Anger bubble, is further reconciled each material using aluminium hydroxide and iron, further enhance the first inner sleeve produced or
The intensity and impact resistance of the second inner sleeve of person, and the first inner sleeve produced or the second inner sleeve is made to have certain metal special
Property, capable of emitting metallic luster improve the first inner sleeve produced or the second inner sleeve more high temperature resistant, high pressure and wear-resisting.
It is embedded in the first housing by the first inner sleeve that the above component is fabricated to, the second inner sleeve being fabricated to by the above component
It is embedded in the second housing, facilitates the dismounting and change of the first inner sleeve and the first housing or the second inner sleeve and the second housing.
Compared with prior art, this programme has the beneficial effect that
1, this programme reduces aluminium hydroxide and iron by the way that a large amount of epoxy resin, polyvinyl chloride and silica is added
Addition so that the cost of the first inner sleeve of production and the second inner sleeve reduces, and this programme epoxy resin, polyvinyl chloride and dioxy
SiClx plays main function, and carries out auxiliary reconciliation by aluminium hydroxide and iron, has both played the characteristic of metal, also obvious to increase
The intensity and impact resistance of strong the first inner sleeve and the second inner sleeve produced, can produce high temperature resistant, high pressure, shock resistance, firmly
Higher, on-deformable nonmetallic first inner sleeve and the second inner sleeve are spent, so that the first inner sleeve and the second inner sleeve produced are not easy
Damage.
2, by the way that the first inner sleeve to be embedded in the first housing, the second inner sleeve is embedded in the second housing this programme, and first
Inner sleeve, the second inner sleeve, the first housing or the second housing can be to the as occurred abrasion, operator during use
One inner sleeve, the second inner sleeve, the first housing or the second housing are replaced, and entire injection mold is avoided all to carry out at recycling
Reason, reduces the use of raw material, to reduce costs.
Further, it makes the first inner sleeve and the material of the second inner sleeve also includes 0.1-1 parts of organic silicon defoamer.Organosilicon
Defoaming agent can further prevent the generation of bubble, prevent from reducing in the first inner sleeve or second produced because bubble generates
Intensity, impact resistance of set etc..
Further, it makes the first inner sleeve and the material of the second inner sleeve also includes 4.4-6.2 parts of stalk powder.It improves whole
A first inner sleeve perhaps the toughness of the second inner sleeve and wearability so that the first inner sleeve or the second inner sleeve are more durable.
Further, it makes the first inner sleeve and the material of the second inner sleeve also includes 2-3 parts of polyethylene wax powder.It improves whole
Perhaps the heat resistance of the second inner sleeve and wearability extend the service life of the first inner sleeve or the second inner sleeve to a first inner sleeve.
Further, the material of the first inner sleeve of production and the second inner sleeve includes the component of following parts by weight: epoxy resin
94-96 parts of powder, 81-83 parts of polyvinyl chloride powder, 30-34 parts of aluminium-hydroxide powder, 26-29 parts of iron powder, maleic anhydride
41-42 parts of powder, 9.9-10.3 parts of pitch, 65-70 parts of SiO 2 powder, 0.2-0.6 parts of organic silicon defoamer, stalk powder
4.9-5.3 parts, 2.2-2.6 parts of polyethylene wax powder.Preferably proportion can produce the of better quality by matching above
One inner sleeve or the second inner sleeve.
Further, the material of the first inner sleeve of production and the second inner sleeve includes the component of following parts by weight: epoxy resin
96 parts of powder, 82 parts of polyvinyl chloride powder, 32 parts of aluminium-hydroxide powder, 28 parts of iron powder, 41 parts of maleic anhydride powder, pitch
10.2 parts, 66 parts of SiO 2 powder, 0.3 part of organic silicon defoamer, 5.1 parts of stalk powder, 2.4 parts of polyethylene wax powder.More
Good proportion, the first inner sleeve produced or the second inner sleeve better quality.
Further, the first sliding block is slidably connected in the first housing, is connected between the first sliding block and the first housing bottom wall
First spring puts on the first embedding groove being provided with for inlaying the first sliding block in first, slidably connects second in the second housing
Sliding block is connected with second spring between the second sliding block and the second housing, be provided with for inlaying the second sliding block is put in second
Two embedding grooves.When the first inner sleeve to be mounted in the first housing, the first embedding groove is directed at the first sliding block, operator exerts oneself
The first inner sleeve is pushed, when the first inner sleeve to be embedded in the first housing, the first sliding block is also inlaid into the first embedding groove, and first
Spring generates certain tensile force to the first inner sleeve, so that the first inner sleeve is more firmly secured in the first housing；In second
It covers identical as the mode that the first inner sleeve is installed.
It further, further include bracket, upper die and lower die are slidably connected on bracket, and upper mold is located above lower die, bracket
On be fixed with piston cylinder, piston is slidably connected in piston cylinder, third spring, piston are connected between piston and piston cylinder bottom
Upside is fixed with piston rod, and the first housing is fixedly connected with piston rod, and sliding slot is provided in the second housing, is slidably connected in sliding slot
Guide rod is connected with the 4th spring, puts on outside first and be fixed with guide pad, be provided on guide pad between guide post and sliding slot bottom wall
Pilot hole, guide post is for being inserted into pilot hole.After upper die and lower die are installed on bracket, upper mold, upper mold band are pushed down on
Piston bar moves downward, and piston rod band piston is slided in piston cylinder, and piston will push the gas in piston cylinder to flow to
In sliding slot, the air pressure in sliding slot is increased, and gas will push guide rod upward sliding, and the first housing drives guide pad slide downward,
Guide rod will be inserted into the pilot hole of guide pad, play the guiding role to upper die and lower die movement, so that upper mold is under
Mould is more accurately to being combined.
Further, two-sided tapered bar is slidably connected in the first housing, puts in first and is provided with the first wedge surface, and the first inner sleeve is logical
The one end for crossing the first wedge surface and two-sided tapered bar offsets, and the 5th spring is connected between two-sided tapered bar and the first outer casing outer wall, guiding
The top of column is provided with the second wedge surface, and guide post is offseted by the other end of the second wedge surface and two-sided tapered bar.Guide post passes through guiding
Hole continues to slide up, and guide post is offseted by the second wedge surface and two-sided tapered bar, and guide post will push two-sided tapered bar to close to the
The direction of one inner sleeve is slided, and two-sided tapered bar pushes against the first inner sleeve, so that the first inner sleeve and the second inner sleeve pairing is tighter, prevents from infusing
When modeling, injection molding material is leaked out from the slotted section of the first inner sleeve and the second inner sleeve.
Further, piston underside is fixed with tapered bar, and tapered bar passes through the bottom of piston cylinder, and the second housing clearance fit has spiral shell
Bar is rotatably connected to gear on bracket, and screw rod is threadedly coupled with gear, and gear is engaged with rack gear, and rack gear is close to one end of tapered bar
It is provided with third wedge surface, tapered bar is used to offset with the third wedge surface of rack gear, and the 6th spring is connected between rack gear and bracket.Piston to
When lower movement, piston driving tapered bar is moved downward, and while guide post and two-sided tapered bar offset, tapered bar also offsets with rack gear,
Tapered bar will also push rack gear sliding, and rack gear will be rotated with moving gear, and gear will drive screw rod to slide, and screw rod will push against second
It is interior logical, so that the first inner sleeve and the second inner sleeve pairing is seamless, prevent injection molding material from leaking.
Detailed description of the invention
Fig. 1 is showing for the agitating device that production Combined injection mold uses in Combined injection mold embodiment of the present invention
It is intended to；
Fig. 2 is the schematic diagram of Combined injection mold embodiment of the present invention；
Fig. 3 is the schematic diagram of upper mold in Fig. 2.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description include: rack 1, agitator tank 2, hollow stirrer axis 3, shaft 4, stirring blade 5,
Sliding slot 6, stirring rod 7, vacuum pump 8, the 7th spring 9, the 4th gear 10, third gear 11, second bevel gear 12, first bevel gear
13, second gear 14, first gear 15, cylindrical cam 16, first axle bolster 17, mandril 18, the 8th spring 19, driving cam
20, slide bar 21, second bearing frame 22, first piston 23, the 9th spring 24, bracket 25, the second housing 26, the second inner sleeve 27,
Two sliding blocks 28, piston cylinder 29, third spring 30, tapered bar 31, second piston 32, piston rod 33, the 4th spring 34, guide post 35,
First housing 36, the first inner sleeve 37, the first sliding block 38, guide pad 39, pilot hole 40, two-sided tapered bar 41, the 5th spring 42, first
Spring 43, second spring 44, screw rod 45, gear 46, rack gear 47, the 6th spring 48.
Related data is as shown in table 1 in embodiment:
Table 1: unit (kg)
By taking embodiment 3 as an example, the method for Combined injection mold production is illustrated, step are as follows: need using a kind of
Agitating device is fixed with agitator tank 2, is equipped in 2 tank wall of agitator tank as shown in Figure 1, agitating device includes rack 1 in rack 1
Heating wire is communicated with vacuum pump 8 on agitator tank 2, lateral hollow stirrer axis 3, hollow stirrer axis is rotatably connected in agitator tank 2
Eight sliding slots 6 are evenly equipped on 3, eight sliding slots 6 are connected to the cavity of hollow stirrer axis 3, are slidably connected in each sliding slot 6
Stirring rod 7, is connected with the 7th spring 9 between stirring rod 7 and the axial wall of hollow stirrer axis 3,2 internal clearance of agitator tank is combined with vertically
Shaft 4, flat key is connected with stirring blade 5 in shaft 4, and stirring blade 5 is located in agitator tank 2, and 4 upper spline of shaft is connected with
One gear 15 is connected with the first axle bolster 17 slid vertically in rack 1, is connected between first axle bolster 17 and rack 1
Eight springs 19 are equipped with first bearing on first axle bolster 17, and 4 lower end of shaft is rotatably connected in first bearing, first gear
15 are engaged with second gear 14, and second gear 14 is coaxially connected with cylindrical cam 16, mandril 18 is welded on first axle bolster 17,
Mandril 18 offsets with cylindrical cam 16, and second gear 14 is coaxially connected with driving cam 20, and driving 20 phase of cam has slide bar 21,
Slide bar 21 is laterally slidably connected in rack 1, and 21 phase of slide bar has a second bearing frame 22, second bearing frame 22 and rack 1 it
Between be connected with the 9th spring 24, first piston 23 is slidably connected in hollow stirrer axis 3, it is living that first is welded on first piston 23
23 bars are filled in, second bearing is installed on second bearing frame 22,23 bar of first piston is rotatably connected in second bearing, second gear
14 are coaxially connected with first bevel gear 13, and first bevel gear 13 is engaged with second bevel gear 12, and second bevel gear 12 is coaxially connected
There is third gear 11, third gear 11 is engaged with the 4th gear 10, and 10 flat key of the 4th gear is connected on hollow stirrer axis 3, machine
Motor is fixed on frame 1, the output shaft of motor is connect with 11 flat key of third gear；
(1) it makes housing: forging the first housing and the second housing of injection mold in forging machine using steel alloy；
(2) it weighs: using electronic scale, weighing epoxy powder 96kg, polyvinyl chloride powder 82kg, aluminium-hydroxide powder
32kg, iron powder 28kg, maleic anhydride powder 41kg, pitch 10.2kg, SiO 2 powder 66kg, organic silicon defoamer
0.3kg, stalk powder 5.1kg, polyethylene wax powder 2.4kg；
(3) it melts: epoxy powder 96kg, polyvinyl chloride powder 82kg and maleic anhydride powder 41kg is poured into
It into agitator tank 2, is powered to heating wire, so that the temperature in agitator tank 2 is 82 DEG C, and makes epoxy powder, polychlorostyrene
Ethylene powder and maleic anhydride powder melts are uniform；
(4) material adds: stalk powder 5.1kg, polyethylene wax powder 2.4kg and titanium dioxide are added into agitator tank 2
The temperature of agitator tank 2 is increased to 91 DEG C by Si powder 66kg；
(5) it reconciles: adding pitch 10.2kg into agitator tank 2, start vacuum pump 8 and motor, vacuum pump 8 to stir
Vacuum state is in case 2, motor drives third gear 11 to rotate, and third gear 11 drives the rotation of the 4th gear 10, the 4th tooth
Wheel 10 will drive hollow stirrer axis 3 to rotate, and hollow stirrer axis 3 drives sliding slot 6 to rotate, and sliding slot 6 drives stirring rod 7 to rotate, stirring
Bar 7 is stirred material, and third gear 11 also drives second bevel gear 12 to rotate, and second bevel gear 12 drives first bevel gear
13 rotations, first bevel gear 13 drive second gear 14 to rotate, and second gear 14 will drive first gear 15 to rotate, first gear
15 drive stirring blade 5 to rotate, and stirring blade 5 is also stirred material, and second gear 14 also drives cylindrical cam 16 and drives
Moving cam 20 rotates, and cylindrical cam 16 and mandril 18 form cam pair, and cylindrical cam 16 will drive mandril 18 reciprocally upper and lower sliding
Dynamic, mandril 18 drives first axle bolster 17 reciprocally to slide, so that shaft 4 drives stirring blade 5 reciprocal in agitator tank 2
Ground sliding, stirring blade 5 will be rotated and be slidably stirred to material, mixing effect be improved, so that material stirring is more
Add uniformly, driving cam 20 and slide bar 21 form cam pair, and driving cam 20 is reciprocally slided with moving slide-bar 21 is left and right, slide bar
21 drive second bearing frame 22 to slide, and second bearing frame 22 drives first piston 23 in hollow stirrer axis by 23 bar of first piston
It is reciprocally slided in 3 cavity, so that the air pressure in hollow stirrer axis 3 constantly alternately increases and reduces, stirring rod 7 will
It is reciprocally slided in sliding slot 6, stirring rod 7 will be rotated and is slidably stirred to material, improve mixing effect, further
So that material stirring is more uniform, after stirring 10min, vacuum pump 8 and motor are closed；
(6) it stirs: aluminium-hydroxide powder 32kg, iron powder 28kg and organic silicon defoamer 0.3kg is added, restarts vacuum pump
8 and motor reuse stirring blade 5 under vacuum and stirring rod 7 be stirred material, stir 1h after, close motor；
(7) it keeps the temperature: improving the temperature of heating wire to 105 DEG C, keep the temperature 2.5h, obtain mixed liquor；
(8) it is poured: the mixed liquor of acquisition is poured into mold, mixed liquor forms in a mold obtains the of injection mold
One inner sleeve and the second inner sleeve；
(9) combine: as shown in Figures 2 and 3, be first slidably connected in the first housing 36 made upper first sliding block 38,
Upper first spring 43 is welded between 36 bottom wall of the first sliding block 38 and the first housing, after the molding of the first inner sleeve 37, the first inner sleeve
37 bottom is formed with embedding groove, and the first inner sleeve of injection mold 37 made is mounted in the first housing of injection mold 36,
When the first inner sleeve 37 to be mounted in the first housing 36, the first embedding groove is directed at the first sliding block 38, operator pushes hard
Dynamic first inner sleeve 37, when the first inner sleeve 37 to be embedded in the first housing 36, the first sliding block 38 is also inlaid into the first embedding groove
Interior, the first spring 43 generates certain tensile force to the first inner sleeve 37, so that the first inner sleeve 37 is more firmly secured at first
In housing 36, upper mold is obtained；Be slidably connected upper second sliding block 28 in the second housing 26 made, in the second sliding block 28 and
Upper second spring 44 is welded between two housings, 26 bottom wall, after the molding of the second inner sleeve 27, the bottom of the second inner sleeve 27 is formed with edge
The second inner sleeve of injection mold 27 made is mounted in the second housing of injection mold 26, pacifies by the second inner sleeve 27 by caulking groove
When in the second housing 26, the second embedding groove is directed at the second sliding block 28, operator enforces the second inner sleeve 27, is inciting somebody to action
When second inner sleeve 27 is embedded in the second housing 26, the second sliding block 28 is also inlaid into the second embedding groove, and second spring 44 is to
One inner sleeve 37 generates certain tensile force, so that the second inner sleeve 27 is more firmly secured in the second housing 26, obtains lower die；
Then upper die and lower die are slidably connected on bracket 25, then are bolted upper piston cylinder 29 on bracket 25, in piston
The through hole passed through for tapered bar 31 is outputed in the bottom of cylinder 29, and upper piston rod 33 is welded in the second piston 32 in piston cylinder 29
With tapered bar 31, upper third spring 30 is welded between second piston 32 and piston cylinder 29, piston rod 33 is welded on the first housing
On 36, two-sided tapered bar 41 is outputed on the first housing 36 by slide opening, outputs the first wedge surface in the bottom of the first inner sleeve 37, it will be double
Face tapered bar 41 is inserted into slide opening, and the wedge surface of two-sided 41 right end of tapered bar is offseted with the first inner sleeve 37, in two-sided tapered bar 41
Upper 5th spring 42 is welded between the first housing 36, is outputed sliding slot 6 on the second housing 26, is inserted into guide post in sliding slot 6
35, upper 4th spring 34 is welded between 6 bottom wall of guide post 35 and sliding slot, and upper guide pad is welded on 36 outer wall of the first housing
39, output the pilot hole 40 passed through for guide post 35 on guide pad 39, the second wedge surface outputed in guide post 35, by upper mold and
After lower die is installed on bracket 25；Gear 46 is rotatablely connected on bracket 25, and the upper tooth engaged with gear 46 that is slidably connected
Item 47 welds upper 6th spring 48 between rack gear 47 and bracket 25, the right end of rack gear 47 is outputed and is used to offset with tapered bar 31
Third wedge surface, output threaded hole on gear 46, upper screw rod 45 connected in threaded hole internal screw thread, in the bottom of the second housing 26
Mesopore is outputed, screw rod 45 passes through mesopore and 27 bottom of the second inner sleeve offsets to get Combined injection mold is arrived.
When using Combined injection mold, upper mold is pushed down on, upper mold drives piston rod 33 to move downward, 33 band of piston rod
Dynamic second piston 32 is slided in piston cylinder 29, and second piston 32 will push the gas in piston cylinder 29 to flow in sliding slot 6, sliding
Air pressure in slot 6 increases, and gas will push guide rod upward sliding, and the first housing 36 drives 39 slide downward of guide pad, guiding
Bar will be inserted into the pilot hole 40 of guide pad 39, play the guiding role to upper die and lower die movement, so that upper mold is under
More accurately to being combined, guide post 35 passes through pilot hole 40 and continues to slide up mould, and guide post 35 passes through the second wedge surface
It offsets with two-sided tapered bar 41, guide post 35 will push two-sided tapered bar 41 to slide to the direction close to the first inner sleeve 37, two-sided tapered bar
41 push against the first inner sleeves 37, so that 27 pairing of the first inner sleeve 37 and the second inner sleeve is tighter, when preventing from being molded, injection molding material is from first
The slotted section of inner sleeve 37 and the second inner sleeve 27 leak out, when second piston 32 moves downward, second piston 32 drive tapered bar 31 to
Lower movement, while guide post 35 and two-sided tapered bar 41 offset, tapered bar 31 also offsets with rack gear 47, and tapered bar 31 will also push tooth
Item 47 slides, and rack gear 47 will be rotated with moving gear 46, and gear 46 will drive screw rod 45 to slide, and screw rod 45 will push against in second
It is logical, so that the first inner sleeve 37 and 27 pairing of the second inner sleeve is seamless, prevent injection molding material from leaking.
Embodiment 1-2,4-5 and embodiment 3, which are distinguished, to be, the change of relevant parameter as shown in table 1.
Comparative example 1 is a kind of asphalt mixtures modified by epoxy resin that Chinese invention patent application number is 201310438168.6 propositions in background technique
Rouge solidfied material, and the first inner sleeve or the second inner sleeve that are fabricated to by epoxy resin cured product.
Pair of first inner sleeve made of above embodiments 1-5 and comparative example 1 or the second inner sleeve intensity and impact strength
Than as shown in table 2:
Table 2:
| Intensity (kg/cm2) | Impact strength (kgcm/cm2) | |
| Embodiment 1 | 32.65 | 23.56 |
| Embodiment 2 | 33.96 | 24.69 |
| Embodiment 3 | 35.66 | 25.12 |
| Embodiment 4 | 32.12 | 22.52 |
| Embodiment 5 | 30.23 | 20.45 |
| Comparative example 1 | 28.80 | 18.60 |
From table 2, the result shows that, Combined injection mold of the invention is fabricated to the intensity of the first inner sleeve or the second inner sleeve
It is much higher than the first inner sleeve of comparative example 1 or the intensity and impact strength of the second inner sleeve, side of the present invention with impact strength
Case clearly enhances the intensity and impact resistance of the first inner sleeve or the second inner sleeve produced, so that produce nonmetallic
One inner sleeve or the second inner sleeve are hardly damaged.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (10)
1. Combined injection mold, including upper die and lower die, upper mold includes the first inner sleeve and the first housing, and lower die includes in second
Set and the second housing, which is characterized in that the first inner sleeve is embedded in the first housing, and the second inner sleeve is embedded in the second housing, system
The material for making the first inner sleeve and the second inner sleeve includes the component of following parts by weight: 90-100 parts of epoxy powder, polychlorostyrene
80-85 parts of ethylene powder, 20-40 parts of aluminium-hydroxide powder, 25-30 parts of iron powder, 40-45 parts of maleic anhydride powder, pitch
9.7-10.6 parts, 60-80 parts of SiO 2 powder.
2. Combined injection mold according to claim 1, it is characterised in that: the first inner sleeve of the production and the second inner sleeve
Material also include 0.1-1 parts of organic silicon defoamer.
3. Combined injection mold according to claim 2, it is characterised in that: the first inner sleeve of the production and the second inner sleeve
Material also include 4.4-6.2 parts of stalk powder.
4. Combined injection mold according to claim 3, it is characterised in that: the first inner sleeve of the production and the second inner sleeve
Material also include 2-3 parts of polyethylene wax powder.
5. Combined injection mold according to claim 4, it is characterised in that: the first inner sleeve of the production and the second inner sleeve
Material include following parts by weight component: 94-96 parts of epoxy powder, 81-83 parts of polyvinyl chloride powder, hydroxide
30-34 parts of aluminium powder, 26-29 parts of iron powder, 41-42 parts of maleic anhydride powder, 9.9-10.3 parts of pitch, SiO 2 powder
65-70 parts, 0.2-0.6 parts of organic silicon defoamer, 4.9-5.3 parts of stalk powder, 2.2-2.6 parts of polyethylene wax powder.
6. Combined injection mold according to claim 5, it is characterised in that: the first inner sleeve of the production and the second inner sleeve
Material include following parts by weight component: 96 parts of epoxy powder, 82 parts of polyvinyl chloride powder, aluminium-hydroxide powder
32 parts, 28 parts of iron powder, 41 parts of maleic anhydride powder, 10.2 parts of pitch, 66 parts of SiO 2 powder, organic silicon defoamer
0.3 part, 5.1 parts of stalk powder, 2.4 parts of polyethylene wax powder.
7. Combined injection mold according to claim 1, it is characterised in that: slidably connect in first housing
One sliding block is connected with the first spring between the first sliding block and the first housing bottom wall, put on to be provided in first and slide for inlaying first
First embedding groove of block slidably connects the second sliding block in the second housing, is connected with second between the second sliding block and the second housing
Spring puts on the second embedding groove being provided with for inlaying the second sliding block in second.
8. Combined injection mold according to claim 2, it is characterised in that: further include bracket, upper die and lower die are sliding
Dynamic to be connected on bracket, upper mold is located above lower die, is fixed with piston cylinder on bracket, piston is slidably connected in piston cylinder, living
Third spring is connected between plug and piston cylinder bottom, piston on the side is fixed with piston rod, the first housing and the fixed company of piston rod
It connects, sliding slot is provided in the second housing, guide rod is slidably connected in sliding slot, the 4th bullet is connected between guide post and sliding slot bottom wall
Spring puts on outside first and is fixed with guide pad, pilot hole is provided on guide pad, guide post is for being inserted into pilot hole.
9. Combined injection mold according to claim 3, it is characterised in that: slidably connected in first housing double
Face tapered bar puts in first and is provided with the first wedge surface, and the first inner sleeve is offseted by one end of the first wedge surface and two-sided tapered bar, double wedge
The 5th spring is connected between bar and the first outer casing outer wall, the top of guide post is provided with the second wedge surface, and guide post passes through the second wedge
Face and the other end of two-sided tapered bar offset.
10. Combined injection mold according to claim 4, it is characterised in that: the piston underside is fixed with tapered bar, wedge
Bar passes through the bottom of piston cylinder, and the second housing clearance fit has screw rod, and gear, screw rod and gear screw thread are rotatably connected on bracket
Connection, gear are engaged with rack gear, and rack gear is provided with third wedge surface close to one end of tapered bar, and tapered bar is for the third wedge surface phase with rack gear
It supports, the 6th spring is connected between rack gear and bracket.
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| CN201810930937.7A CN109177057B (en) | 2018-08-15 | 2018-08-15 | Combined injection mold |
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|---|---|
| CN109177057B (en) | 2020-12-01 |
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