CN103660173B - A kind of mould for the production of precise plastic - Google Patents
A kind of mould for the production of precise plastic Download PDFInfo
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- CN103660173B CN103660173B CN201310658636.0A CN201310658636A CN103660173B CN 103660173 B CN103660173 B CN 103660173B CN 201310658636 A CN201310658636 A CN 201310658636A CN 103660173 B CN103660173 B CN 103660173B
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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
- 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
- B29C45/38—Cutting-off equipment for sprues or ingates
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of mould for the production of precise plastic, aim to provide one energy products of separated and runner plastics automatically when parting, and can ensure that cut-out is clean, separating stable, the mould that product itself is intact.It comprises upper die and lower die, die cavity, runner, runner contact die cavity place has a dive section, be positioned at that dive section goes up most, the upper outline line of bottom, lower whorl profile are straight line, the difference of upper outline line, lower whorl profile and horizontal plane angulation is greater than 5 degree, two relative slide blocks are provided with in patrix, the mutually contrary and place of glide direction on the same line, patrix is provided with the Angle Pin of two upper end introversions, Angle Pin penetrates the upper and lower surface of slide block, runner connects a deep gouge, and deep gouge to be in below runner and and flow passage.The invention has the beneficial effects as follows: when thin-wall product parting, can realize the automatic fracture of product and runner plastics smoothly, fracture process is clear-cut fast, can ensure that section is smooth, the intact and parting process stabilization of product.
Description
Technical field
The invention belongs to mould applications, particularly relate to a kind of mould for the production of precise plastic.
Background technology
In the design of a lot of precise plastic, when especially relating to some optical precision plastic parts, because structure itself is complicated, and size, appearance requirement are high, and product is little, so have higher requirement to the manufacture of mould and exploitation, should guaranteed quality, the output of every day can be ensured again.But, a big chunk in this series products, have an obvious feature to be exactly that wall thickness is very thin, allow the position bore into glue to only have about 0.5mm, some is even at below 0.35mm, the disconnected glue outlet structure that now if design is conventional, such as put Jiao Kou, conventional submarine Jiao Kou, have no idea normally to realize the disconnection of product and runner plastics at all, its reason is exactly the very thin and insufficient strength of product, be unable to bear the tensile force based on vertical direction, the related damage of drawing of product can be caused even to break.So conventional side now often can only be adopted to enter the structure of glue, namely runner Jiao Kou and product connect together, process rearward after depanning, product is separated with runner plastics, but so, directly results in the increase of aft-loaded airfoil operation, and the efficiency also unusual end, in aft-loaded airfoil process, may secondary damage be caused again, both cost of idleness, affects efficiency again.
Summary of the invention
The present invention is that precision plastic rubber mould product when product depanning can not intactly be separated with runner plastics, product rapid wear in order to overcome in prior art, therefore aft-loaded airfoil can only be taked to be separated thus to cause the deficiency that cost is higher, efficiency is lower, provide one energy products of separated and runner plastics automatically when parting, and can ensure and cut off clean, separating stable, the mould that product itself is intact.
To achieve these goals, the present invention is by the following technical solutions:
A kind of mould for the production of precise plastic, comprise patrix, counterdie, die cavity, described die cavity and a flow passage, described runner is in above cavity side, described runner comprises at least one turnaround section, described runner contact die cavity place has a dive section, be positioned at dive section to go up most, the upper outline line of bottom, lower whorl profile is straight line, upper outline line, the difference of lower whorl profile and horizontal plane angulation is greater than 5 degree, described dive section is by the first half, Lower Half is formed, the length of Lower Half is at least the twice of first half length, described lower portion sets low the main part in runner, two relative slide blocks are provided with in described patrix, the mutually contrary and place of glide direction on the same line, described patrix is provided with the Angle Pin of two upper end introversions, described Angle Pin penetrates on slide block, lower surface, described runner connects a deep gouge, described deep gouge to be in below runner and and flow passage.If object global shape is irregular, when being subject to external force, stress easily concentrate on the minimum place of size, thinnest part or local linkage section size smaller part.Dive section is the linkage section of Jiao Kou place and part, during depanning, make the power that runner plastics and product are separated from each other if having, on adding, the difference of outline line, lower whorl profile and horizontal plane angulation is greater than 5 degree, Jiao Kou place overall structure is irregular, and therefore stress can mainly concentrate on Jiao Kou place.During injection mo(u)lding, molten plastic also enters deep gouge from runner while runner, Jiao Kou enter die cavity, and shaping together with the plastics in runner, after cooling, forms a downward projection.During parting discharging, upper and lower mould is separated, slide block is under the guiding of Angle Pin, start transverse shifting, now due to the existence of projection, the relative position be connected between the runner plastics of projection and slide block changes, runner plastics are upspring towards patrix direction, between product in runner plastics and die cavity, forming position changes, and produces the tensile force laterally adding vertical direction, idetified separation effect, to the linkage section of product and runner plastics, also be Jiao Kou place, pull-off force is very large instantaneously, can effectively realize fast automatically disconnecting Jiao Kou.
As preferably, described deep gouge is in the side of runner near die cavity, and the lateral margin of described deep gouge vertical section is S-shaped.Improve the projection that formed in deep gouge and the bonding strength flowing to plastics, and break for Jiao Kou pull-off force is provided while relax the stressed of runner plastics and projection place, ensure to break to only occur in Jiao Kou place, the intact common depanning that links together of remainder energy.
As preferably, described upper outline line and horizontal plane angulation are greater than lower whorl profile and horizontal plane angulation, and differential seat angle is 15 to 85 degree.
As preferably, the described first half comprises two upper sides, described Lower Half comprises two downsides, upper side, downside correspondence overlap and form two lateral surfaces of dive section, two lateral surfaces are the inclined-plane of top flare, and two lateral surface bottom space are minimum and consistent with the height of flow field end opening.Flow field end opening part is exactly Jiao Kou place, lateral surface bottom space is minimum and consistent with the height of flow field end opening, being equivalent to Jiao Kou place has two edge lines to be isometric, this just improves the self-symmetry of glue outlet structure to a certain extent, when there is fracture in the stress concentrated, there is self-symmetric Jiao Kou stressed more balanced, more simultaneously stressed on the whole section of convergence on section, therefore can better realize smoothly breaking, reduce product and the adhesion of glue mouth plastics, related possibility of drawing damage, prevent product depanning from damaging.Two lateral surfaces are the inclined-plane of top flare, and therefore cross section, Jiao Kou place is up big and down small, improve the relative melt amount of plastic of this upper part, place, improve speed and pressure that molten plastic enters die cavity, be beneficial to the filling of plastics, ensure the complete of product and Jiao Kou place, be also beneficial to follow-up parting disconnection.
As preferably, the difference of two lateral surfaces and perpendicular angulation is different, and two described lateral surfaces are identical with the difference of upper outline line, lower whorl profile and horizontal plane angulation with the difference of perpendicular angulation.Limit two lateral surfaces, just define outline line simultaneously, lower whorl profile respectively has two, be in respectively on contoured surface, bottom profiled face.Also as above contoured surface, bottom profiled face like that, have different gradients, thus make Jiao Kou place become gradient structure more than, put forward the effect of high stress concentrations further two lateral surfaces.And two lateral surfaces are identical with the difference of upper outline line, lower whorl profile and horizontal plane angulation with the difference of perpendicular angulation, make again glue mouth section part comparatively regular, there is certain global symmetry, in stressed stretch breaking process, stress is evenly distributed on section, the surfacing after breaking.
As preferably, described counterdie is provided with the slide rail of level, and described slide block and slide rail are slidably connected.Controlled the direction of motion of slide block by slide rail, ensure the stable of point mold process, also make Jiao Kou place automatically rupture smoothly and separation of products.
The invention has the beneficial effects as follows: when thin-wall product parting, can realize the automatic fracture of product and runner plastics smoothly, fracture process is clear-cut fast, can ensure that section is smooth, the intact and parting process stabilization of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is Facad structure schematic diagram of the present invention;
Fig. 3 is the top view of runner of the present invention and product junction;
Fig. 4 is the side view of runner of the present invention and product junction;
Fig. 5 is the structural representation at the embodiment of the present invention 2 Jiao Kou place.
In figure: patrix 1, counterdie 2, runner 3, dive section 4, Angle Pin 5, slide block 6, product 7, projection 8, lateral surface 9, slide rail 10.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1: as Fig. 1, Fig. 2, Fig. 3, a kind of mould for the production of precise plastic shown in Fig. 4, comprise patrix 1, counterdie 2, die cavity, described die cavity is communicated with a runner 3, described runner 3 is in above cavity side, described runner 3 comprises at least one turnaround section, described runner 3 contacts die cavity place and has a dive section 4, be positioned at dive section 4 to go up most, the upper outline line of bottom, lower whorl profile is straight line, upper outline line, the difference of lower whorl profile and horizontal plane angulation is greater than 5 degree, described dive section 4 is by the first half, Lower Half is formed, the length of Lower Half is at least the twice of first half length, described lower portion sets low the main part in runner 3, two relative slide blocks 6 are provided with in described patrix 1, the mutually contrary and place of glide direction on the same line, described patrix 1 is provided with the Angle Pin 5 of two upper end introversions, described Angle Pin 5 penetrates on slide block 6, lower surface, described runner 3 connects a deep gouge, described deep gouge to be in below runner 3 and to be communicated with runner 3.Described deep gouge is in the side of runner 3 near die cavity, and the lateral margin of described deep gouge vertical section is S-shaped.Described counterdie 2 is provided with the slide rail 10 of level, and described slide block 6 is slidably connected with slide rail 10.
During injection mo(u)lding, molten plastic also enters deep gouge from runner 3 while runner 3, Jiao Kou enter die cavity, and shaping together with the plastics in runner 3, after cooling, forms a downward projection 8.During parting discharging, upper and lower mould is separated, slide block 6 is under the guiding of Angle Pin 5, start transverse shifting, now due to the existence of projection 8, the relative position be connected between the runner of projection 8 and slide block 6 changes, runner is upspring towards patrix 1 direction, between product 7 in runner and die cavity, forming position changes, produce the tensile force laterally adding vertical direction, idetified separation effect, in addition in addition with many gradients glue outlet structure that dive section 4 and product 7 junction have, to the linkage section of product 7 and runner, also be Jiao Kou place, pull-off force is very large instantaneously, can effectively realize fast automatically disconnecting Jiao Kou, and, because the pull-off force of moment is very large, concentrate on Jiao Kou again, therefore section part can be comparatively smooth intact.
Embodiment 2: as shown in Figure 1, Figure 2, a kind of mould for the production of precise plastic shown in Fig. 3, Fig. 4, Fig. 5, its basic structure and embodiment are with embodiment 1, difference is: described upper outline line and horizontal plane angulation are greater than lower whorl profile and horizontal plane angulation, and differential seat angle is 15 to 85 degree.The described first half comprises two upper sides, described Lower Half comprises two downsides, upper side, downside correspondence overlap and form two lateral surfaces 9 of dive section 4, two lateral surfaces 9 are the inclined-plane of top flare, and two lateral surface 9 bottom space are minimum and consistent with the open-ended height of runner 3.Runner 3 distal opening place is exactly Jiao Kou place, lateral surface 9 bottom space is minimum and consistent with the open-ended height of runner 3, being equivalent to Jiao Kou place has two edge lines to be isometric, this just improves the self-symmetry of glue outlet structure to a certain extent, when the stress fracture concentrated, there is self-symmetric Jiao Kou stressed more balanced, more simultaneously stressed on the whole section of convergence on section, therefore can better realize smoothly breaking, reduce product 7 and the possibility of glue mouth plastics adhesion, prevent product 7 depanning from damaging.Two lateral surfaces 9 are different with the difference of perpendicular angulation, and two described lateral surfaces 9 are identical with the difference of upper outline line, lower whorl profile and horizontal plane angulation with the difference of perpendicular angulation.Limit two lateral surfaces 9, just define outline line simultaneously, lower whorl profile respectively has two, be in respectively on contoured surface, bottom profiled face.Also as above contoured surface, bottom profiled face like that, have different gradients, thus make Jiao Kou place become gradient structure more than, put forward the effect of high stress concentrations further two lateral surfaces 9.And two lateral surfaces 9 are identical with the difference of upper outline line, lower whorl profile and horizontal plane angulation with the difference of perpendicular angulation, make again glue mouth section part comparatively regular, there is certain global symmetry, in stressed stretch breaking process, stress is evenly distributed on section, the surfacing after breaking.
Claims (7)
1. the mould for the production of precise plastic, comprise patrix (1), counterdie (2), die cavity, it is characterized in that, described die cavity is communicated with a runner (3), described runner (3) is in above cavity side, described runner (3) comprises at least one turnaround section, described runner (3) contact die cavity place has a dive section (4), be positioned at dive section (4) to go up most, the upper outline line of bottom, lower whorl profile is straight line, upper outline line, the difference of lower whorl profile and horizontal plane angulation is greater than 5 degree, described dive section (4) is by the first half, Lower Half is formed, the length of Lower Half is at least the twice of first half length, described lower portion sets low the main part in runner (3), two relative slide blocks (6) are provided with in described patrix (1), the mutually contrary and place of glide direction on the same line, described patrix (1) is provided with the Angle Pin (5) of two upper end introversions, described Angle Pin (5) penetrates on slide block (6), lower surface, described runner (3) connects a deep gouge, described deep gouge is in runner (3) below and is communicated with runner (3).
2. a kind of mould for the production of precise plastic according to claim 1, is characterized in that, described deep gouge is in the side of runner (3) near die cavity, and the lateral margin of described deep gouge vertical section is S-shaped.
3. a kind of mould for the production of precise plastic according to claim 1 and 2, is characterized in that, described upper outline line and horizontal plane angulation are greater than lower whorl profile and horizontal plane angulation, and differential seat angle is 15 to 85 degree.
4. a kind of mould for the production of precise plastic according to claim 1, it is characterized in that, the described first half comprises two upper sides, described Lower Half comprises two downsides, upper side, downside correspondence overlap and form two lateral surfaces (9) of dive section (4), two lateral surfaces (9) are the inclined-plane of top flare, and two lateral surface (9) bottom space are minimum and consistent with runner (3) open-ended height.
5. a kind of mould for the production of precise plastic according to claim 4, is characterized in that, two lateral surfaces (9) are different with the difference of perpendicular angulation.
6. a kind of mould for the production of precise plastic according to claim 5, is characterized in that, two described lateral surfaces (9) are identical with the difference of upper outline line, lower whorl profile and horizontal plane angulation with the difference of perpendicular angulation.
7. a kind of mould for the production of precise plastic according to claim 1 or 4 or 5 or 6, it is characterized in that, described counterdie (2) is provided with the slide rail (10) of level, and described slide block (6) and slide rail (10) are slidably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310658636.0A CN103660173B (en) | 2013-12-06 | 2013-12-06 | A kind of mould for the production of precise plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310658636.0A CN103660173B (en) | 2013-12-06 | 2013-12-06 | A kind of mould for the production of precise plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103660173A CN103660173A (en) | 2014-03-26 |
| CN103660173B true CN103660173B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310658636.0A Active CN103660173B (en) | 2013-12-06 | 2013-12-06 | A kind of mould for the production of precise plastic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105216248A (en) * | 2015-10-29 | 2016-01-06 | 勋龙精密模具(昆山)有限公司 | Cutting apparatus in a kind of mould |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347995A (en) * | 2007-07-16 | 2009-01-21 | 汉达精密电子(昆山)有限公司 | Pin point glue inlet flow passage structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4729672B2 (en) * | 2001-07-31 | 2011-07-20 | 株式会社イノアックコーポレーション | Molded urethane foam roll |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347995A (en) * | 2007-07-16 | 2009-01-21 | 汉达精密电子(昆山)有限公司 | Pin point glue inlet flow passage structure |
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| CN103660173A (en) | 2014-03-26 |
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Address after: 315400 No.184, Shunyu West Road, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Bellon Precision Technology Co.,Ltd. Address before: 315400 No.184, Shunyu West Road, Yuyao City, Ningbo City, Zhejiang Province Patentee before: Ningbo Beilong Precision Molding Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 315400 No.184, Shunyu West Road, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Beilong Precision Molding Co.,Ltd. Address before: 315400 C20 building, Far East Industrial City, Ningbo, Zhejiang, Yuyao Patentee before: NINGBO BEILONG PRECISION MOLDING Co.,Ltd. |
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| CP03 | Change of name, title or address |