CN220095221U - Exhaust system of optical mould - Google Patents
Exhaust system of optical mould Download PDFInfo
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- CN220095221U CN220095221U CN202321652322.5U CN202321652322U CN220095221U CN 220095221 U CN220095221 U CN 220095221U CN 202321652322 U CN202321652322 U CN 202321652322U CN 220095221 U CN220095221 U CN 220095221U
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- parting surface
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- 230000003287 optical effect Effects 0.000 title claims abstract description 22
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 238000013459 approach Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000013022 venting Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides an exhaust system of an optical die, which belongs to the technical field of dies and comprises: the fixed die plate is connected with a fixed die core, and a fixed die parting surface is arranged on the fixed die core; the movable mould plate is connected with a movable mould core, and a movable mould parting surface is arranged on the movable mould core, wherein a movable mould cavity and a supporting part are arranged on the movable mould parting surface, a supporting plane with a height difference is formed between the movable mould cavity and the movable mould parting surface, and a gap is formed between the fixed mould parting surface and the movable mould parting surface after the movable mould core and the fixed mould core are clamped. According to the utility model, through arranging the support plane, a gap is formed between the parting surface of the guide actuation die and the parting surface of the fixed die, so that the gas in the product molding cavity formed by splicing the movable die cavity and the fixed die cavity can be completely discharged, the phenomenon of flash caused by trapped gas in the molded product is avoided, and the molding quality of the product is further improved.
Description
Technical Field
The utility model belongs to the technical field of molds, and relates to an exhaust system, in particular to an exhaust system of an optical mold.
Background
The design, processing and manufacturing of the mould plays a very key role in the quality of a plastic product, namely a seven-part mould and a three-part process. The mold design determines the product quality, while the exhaust system plays a decisive role in the five systems of the mold. In optical mold design, the design of the exhaust system is important to product performance and process window. The traditional mold exhaust design is primary main exhaust (direct PL line spacing extraction), secondary exhaust (product outer contour perimeter), and part of the three-stage exhaust.
However, the following disadvantages exist for conventional mold venting:
firstly, for optical products with large curvature, the exhaust system designs the edge overflow value according to the shape of the product, so that the phenomenon of flash easily occurs;
secondly, the traditional exhaust system needs to be distributed at intervals, so that gas in the die cannot be completely exhausted, the pressure and speed during injection filling are increased, and further the internal stress of a molded product is larger.
Disclosure of Invention
The present utility model has been made in view of the above problems occurring in the prior art, and an object of the present utility model is to provide an exhaust system capable of completely exhausting gas in an inner region of a mold.
The aim of the utility model can be achieved by the following technical scheme: an exhaust system for an optical mold, comprising:
the fixed die plate is connected with a fixed die core, and a fixed die parting surface is arranged on the fixed die core, wherein a fixed die cavity is arranged on the fixed die parting surface;
the movable mould plate is connected with a movable mould core, and a movable mould parting surface is arranged on the movable mould core, wherein a movable mould cavity and a supporting part are arranged on the movable mould parting surface, a supporting plane with a height difference is formed between the movable mould cavity and the movable mould parting surface, when the movable mould core and the fixed mould core are clamped, the movable mould parting surface approaches to the fixed mould parting surface, and the fixed mould parting surface abuts against the supporting plane, so that a gap is formed between the fixed mould parting surface and the movable mould parting surface, and the movable mould cavity and the fixed mould cavity are spliced to form a product molding cavity.
In the above-mentioned exhaust system of an optical mold, first exhaust grooves are arranged on the parting surface of the movable mold along the outline of the movable mold cavity at intervals, and two adjacent first exhaust grooves are communicated through a second exhaust groove, wherein, after the movable mold core and the fixed mold core are assembled, the parting surface of the fixed mold abuts against the supporting plane, so that a gap is formed between the parting surface of the fixed mold and the parting surface of the movable mold, and the depths of the first exhaust grooves and the second exhaust grooves along the product mold outlet direction are indirectly deepened through the gap.
In the above-mentioned exhaust system of an optical mold, the depth of the first exhaust groove is 0.03mm, the width is 0.06mm, and the depth of the second exhaust groove is 0.06mm, wherein, after the moving mold core and the fixed mold core are assembled, a gap formed between the parting surface of the fixed mold and the parting surface of the moving mold is 0.03mm.
In the above-mentioned exhaust system of an optical mold, the supporting portion includes a plurality of supporting blocks, and the plurality of supporting blocks are laid out along the outline of the moving mold cavity, wherein, each supporting block is provided with a bearing plane, and the plurality of bearing planes are spliced to form the supporting plane.
In the above-mentioned exhaust system for an optical mold, the number of the supporting blocks is five, and the projection area of the five supporting blocks on the parting surface of the movable mold is 100cm 2 The mould locking force required by the movable mould core and the fixed mould core during mould closing is 180T.
In the above-mentioned exhaust system of an optical mold, the supporting block can be moved up and down along the demolding direction of the product, and the supporting block is connected to the moving mold core through the fastener, wherein, through rotating the fastener, the height difference between the bearing plane on the supporting block and the parting surface of the moving mold is changed.
In the above-mentioned exhaust system of an optical mold, the supporting block is embedded in the moving mold core.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the exhaust system of the optical die, the supporting part with the supporting plane is arranged on the parting surface of the movable die, so that when the movable die core and the fixed die core are clamped, a gap is formed between the parting surface of the movable die and the parting surface of the fixed die due to the existence of the supporting plane, and due to the existence of the gap, gas in a product molding cavity formed by splicing the movable die cavity and the fixed die cavity can be completely exhausted, the phenomenon of flash caused by trapped gas in the molded product is avoided, and the molding quality of the product is improved.
(2) And arranging a plurality of supporting blocks, and splicing bearing planes on the plurality of supporting blocks to form a supporting plane, so that after the movable die core and the fixed die core are clamped, gaps on all parts between the parting surface of the movable die and the parting surface of the fixed die are equalized, and the reliability of exhaust is further improved.
Drawings
Fig. 1 is a cross-sectional view of an exhaust system of an optical mold according to the present utility model.
FIG. 2 is a schematic diagram of a movable mold insert according to a preferred embodiment of the present utility model.
Fig. 3 is a second cross-sectional view of an exhaust system for an optical mold according to the present utility model.
Fig. 4 is an enlarged view of a portion a in fig. 3.
100, a fixed template; 200. fixing the die core; 210. a fixed die parting surface; 220. a fixed mold cavity; 300. a movable template; 400. a movable mold core; 410. parting surfaces of the movable mold; 420. a movable mold cavity; 430. a first exhaust groove; 440. a second exhaust groove; 450. a gap; 460. a support block; 461. a load bearing plane; 462. a fastener.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 4, the exhaust system of an optical mold according to the present utility model includes:
the fixed die plate 100, wherein the fixed die plate 100 is connected with a fixed die core 200, and a fixed die parting surface 210 is arranged on the fixed die core 200, and a fixed die cavity 220 is arranged on the fixed die parting surface 210;
the movable template 300 is connected with a movable mould core 400 on the movable template 300, and a movable mould parting surface 410 is arranged on the movable mould core 400, wherein a movable mould cavity 420 and a supporting part are arranged on the movable mould parting surface 410, a supporting plane with a height difference is formed between the movable mould cavity 420 and the movable mould parting surface 410 is arranged on the supporting part, when the movable mould core 400 and the fixed mould core 200 are clamped, the movable mould parting surface 410 approaches to the fixed mould parting surface 210, and the fixed mould parting surface 210 abuts against the supporting plane, so that a gap 450 is formed between the fixed mould parting surface 210 and the movable mould parting surface 410, and the movable mould cavity 420 and the fixed mould cavity 220 are spliced to form a product forming cavity.
According to the exhaust system of the optical mold, the supporting part with the supporting plane is arranged on the movable mold parting surface 410, so that when the movable mold insert 400 and the fixed mold insert 200 are assembled, the gap 450 is formed between the movable mold parting surface 410 and the fixed mold parting surface 210 due to the existence of the supporting plane, and due to the existence of the gap 450, all the gas in the product molding cavity formed by splicing the movable mold cavity 420 and the fixed mold cavity 220 can be exhausted, the phenomenon of flash caused by trapped gas in the molded product is avoided, and the molding quality of the product is further improved.
It should be noted that, the movable mold parting surface 410 is provided with first air exhaust grooves 430 along the outline of the movable mold cavity 420 at intervals, and two adjacent first air exhaust grooves 430 are communicated with each other through a second air exhaust groove 440, wherein, after the movable mold insert 400 and the fixed mold insert 200 are assembled, the fixed mold parting surface 210 abuts against the supporting plane, so that a gap 450 is formed between the fixed mold parting surface 210 and the movable mold parting surface 410, and the depths of the first air exhaust grooves 430 and the second air exhaust grooves 440 along the product mold-out direction are indirectly deepened through the gap 450.
Preferably, the first venting grooves 430 have a depth of 0.03mm and a width of 0.06mm, and the second venting grooves 440 have a depth of 0.06mm, wherein when the movable mold insert 400 and the fixed mold insert 200 are clamped, the gap 450 formed between the fixed mold parting surface 210 and the movable mold parting surface 410 is 0.03mm, so that the depth of the first venting grooves 430 is changed from 0.03mm to 0.06mm, and the depth of the second venting grooves 440 is changed from 0.06mm to 0.09mm.
It should be noted that, since the molded product is made of PC plastic (polycarbonate) and the flash value is between 0.03 and 0.06mm, the depth of the first air vent 430 is just within the flash value, so that the product will not generate flash during the molding process.
Preferably, the supporting portion includes a plurality of supporting blocks 460, and the plurality of supporting blocks 460 are laid out along the outline of the cavity of the movable mold, wherein each supporting block 460 is provided with a bearing plane 461, and the plurality of bearing planes 461 are spliced to form the supporting plane.
In the present embodiment, a plurality of supporting blocks 460 are provided, and the supporting planes are formed by splicing the bearing planes 461 on the plurality of supporting blocks 460, so that after the movable mold insert 400 and the fixed mold insert 200 are assembled, the gaps 450 on each part between the movable mold parting surface 410 and the fixed mold parting surface 210 are equalized, thereby further improving the reliability of exhaust.
Further preferably, the number of the supporting blocks 460 is five, and the projection area of the five supporting blocks 460 on the parting surface 410 of the movable mold is 100cm 2 The clamping force required by the movable mold insert 400 and the fixed mold insert 200 during mold closing is 180T.
It should be noted that since the projected area of all the supporting blocks 460 is 100cm 2 And the mold locking force required by the movable mold insert 400 and the fixed mold insert 200 during mold closing is 180T, so that the mold locking force required to be born by each square centimeter on the supporting block 460 is 1.8T. Due to the supporting blocks 460The steel is hardened by heat treatment of 45# steel, and the bearable bearing capacity per square centimeter is more than 1.8T, so that the requirement of the mold locking force between the steel and the steel is met.
Preferably, the supporting block 460 can move up and down along the demolding direction of the product, and the supporting block 460 is connected to the movable mold insert 400 through a fastening piece 462, wherein the height difference between the bearing plane 461 on the supporting block 460 and the movable mold parting surface 410 is changed by rotating the fastening piece 462, so that the gap 450 between the movable mold parting surface 410 and the fixed mold parting surface 210 is changed.
Further preferably, the supporting block 460 is embedded on the movable mold core 400.
It should be noted that the description of the present utility model as it relates to "first", "second", "a", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "coupled," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (7)
1. An exhaust system for an optical mold, comprising:
the fixed die plate is connected with a fixed die core, and a fixed die parting surface is arranged on the fixed die core, wherein a fixed die cavity is arranged on the fixed die parting surface;
the movable mould plate is connected with a movable mould core, and a movable mould parting surface is arranged on the movable mould core, wherein a movable mould cavity and a supporting part are arranged on the movable mould parting surface, a supporting plane with a height difference is formed between the movable mould cavity and the movable mould parting surface, when the movable mould core and the fixed mould core are clamped, the movable mould parting surface approaches to the fixed mould parting surface, and the fixed mould parting surface abuts against the supporting plane, so that a gap is formed between the fixed mould parting surface and the movable mould parting surface, and the movable mould cavity and the fixed mould cavity are spliced to form a product molding cavity.
2. The exhaust system of an optical mold according to claim 1, wherein first exhaust grooves are arranged on the parting surface of the movable mold at intervals along the outline of the cavity of the movable mold, and two adjacent first exhaust grooves are communicated with each other through a second exhaust groove, wherein when the movable mold insert and the fixed mold insert are assembled, the parting surface of the fixed mold is abutted against the supporting plane, so that a gap is formed between the parting surface of the fixed mold and the parting surface of the movable mold, and the depths of the first exhaust grooves and the second exhaust grooves in the product mold outlet direction are indirectly deepened through the gap.
3. The vent system of claim 2, wherein the first vent groove has a depth of 0.03mm and a width of 0.06mm, and the second vent groove has a depth of 0.06mm, and wherein a gap formed between the parting surface of the stationary mold and the parting surface of the movable mold is 0.03mm when the movable mold insert and the stationary mold insert are clamped.
4. An exhaust system of an optical mold according to claim 1, wherein the support portion comprises a plurality of support blocks, and the plurality of support blocks are arranged along the outline of the cavity of the movable mold, wherein each support block is provided with a bearing plane, and the plurality of bearing planes are spliced to form the bearing plane.
5. The exhaust system of an optical mold according to claim 4, wherein the number of the supporting blocks is five, and the projection area of the five supporting blocks on the parting surface of the movable mold is 100cm 2 The mould locking force required by the movable mould core and the fixed mould core during mould closing is 180T.
6. The vent system of claim 4, wherein the support block is movable up and down in the demolding direction of the product, and the support block is connected to the movable mold insert by a fastener, wherein the height difference between the bearing plane on the support block and the parting surface of the movable mold is changed by rotating the fastener.
7. The vent system of claim 4, wherein the support block is embedded in the movable mold insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321652322.5U CN220095221U (en) | 2023-06-27 | 2023-06-27 | Exhaust system of optical mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321652322.5U CN220095221U (en) | 2023-06-27 | 2023-06-27 | Exhaust system of optical mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220095221U true CN220095221U (en) | 2023-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321652322.5U Active CN220095221U (en) | 2023-06-27 | 2023-06-27 | Exhaust system of optical mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220095221U (en) |
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2023
- 2023-06-27 CN CN202321652322.5U patent/CN220095221U/en active Active
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