CN217916561U - Runner cut-off type plastic lens forming device - Google Patents
Runner cut-off type plastic lens forming device Download PDFInfo
- Publication number
- CN217916561U CN217916561U CN202221104112.8U CN202221104112U CN217916561U CN 217916561 U CN217916561 U CN 217916561U CN 202221104112 U CN202221104112 U CN 202221104112U CN 217916561 U CN217916561 U CN 217916561U
- Authority
- CN
- China
- Prior art keywords
- cylindrical part
- die
- cavity
- lower die
- core hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 51
- 239000004033 plastic Substances 0.000 title claims abstract description 51
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 27
- 238000005520 cutting process Methods 0.000 description 20
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 238000001746 injection moulding Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000013502 plastic waste Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a runner cut-off type plastic lens forming device, which is provided with an upper mold core, the upper mold core is provided with a first cylindrical part extending downwards, an upper mold cavity is formed on the end surface of the first cylindrical part, a lower mold base is provided with a mold core hole, and a runner communicated with the mold core hole in the radial direction is arranged, the first cylindrical part is downwards accommodated in the mold core hole, a lower mold core is arranged in the lower mold base, the lower mold core is provided with a second cylindrical part, a lower mold cavity is formed on the end surface of the second cylindrical part, and the first cylindrical part can move along the mold core hole, so that a lens forming mold cavity is formed between the upper mold cavity and the lower mold cavity, the lower mold base can move between a communication position and a closed position relative to the first cylindrical part or the second cylindrical part, and when the lower mold base is positioned at the communication position, the runner is communicated with the lens forming mold cavity; when the lower die holder is located at the closed position, the peripheral side of the first cylindrical part or the second cylindrical part is opposite to the closed pouring channel, so that the pouring channel is not communicated with the lens forming die cavity.
Description
Technical Field
The present invention relates to a mold for manufacturing lenses, and more particularly to a sprue-cutting type plastic lens molding apparatus.
Background
The existing injection molding manufacturing method of optical lens mainly utilizes the extrusion of molten resin material into a molding die, the molding die is provided with a die cavity and a runner corresponding to the shape and size of the lens, the die cavity is communicated with the runner, and a sprue is formed at the joint of the die cavity and the runner.
In order to solve the above problems, manufacturers have developed a cutting structure for cutting off the stub bar in the mold, for example, in the chinese patent No. 201821024933.4, a shear plate is disposed at one side of the mold for cutting off the stub bar when demolding the cooled and hardened molded product, but the cutting structure not only complicates the composition structure of the mold, but also is easy to wear and affect the flatness of the subsequent cutting due to the cutting action performed on the cooled and hardened molded product, and when the flat shear plate is cut along the periphery of the circular cylindrical mold, a lot of side gate stub bars remain, and the purpose of completely removing the gate stub bars cannot be achieved.
However, the cutting structure of the stub bar provided in taiwan patent publication No. 200518909 is to insert a shear plate between a cavity and a runner in a forming mold, and after the formed product in the cavity is cooled and hardened, the shear plate is pulled to slide along the transverse direction, so as to cut the stub bar between the cavity and the runner.
In addition, as the stub bar cutting structure provided in taiwan patent No. 201902656, a cutter is used to cut the plastic in the runner upward, but the cutting structure must additionally consider the position accuracy of the cutter notch during cutting, so the shape and size of the cutter notch must be controlled to be quite accurate, and in order to easily control the shape and size, the cutter notch can only be made into a straight shape, so when the cutting structure is applied to the periphery of a circular cylindrical mold for cutting, a lot of side gates remain; in addition, when the cutting tool cuts the plastic in the runner upwards, the cutting structure will push the plastic, which increases the density and stress on both sides of the molded object, and further affects the imaging quality of the optical lens when applied to the optical lens.
In addition, in the injection molding process of the existing optical lens, after the molding mold is closed, the melted and softened plastic is poured into the mold cavity from the outside, however, on the premise that the existing optical lens is smaller and smaller, when the molding mold is closed, the narrow area formed by the concave-convex shape of the surface of the mold cavity is relatively formed, which is easy to restrict and block the flow of the plastic, so that the uneven injection pressure occurs during the process of pouring the plastic into the mold cavity, and the finished lens product manufactured by the existing optical lens is easy to have the uneven light pattern defects with inconsistent density during the polarized light inspection. In addition, in some injection molding situations with high thickness-to-thickness ratio, when the mold cavity is filled with plastic from bottom to top, the plastic is limited by the space of the mold cavity after the mold is closed, and the optical lens is easily coated with air in a thinner area in the middle of the optical lens.
SUMMERY OF THE UTILITY MODEL
One of the objectives of the present invention is to provide a sprue-cutting type plastic lens forming device, which has a simple structure and can be directly manufactured into a lens without a sprue and with a smooth outer contour.
The second objective of the present invention is to provide a runner block type plastic lens forming device, which has the function of effectively solving the related problems of lens light pattern flaw and easy air covering caused by uneven injection pressure stress in the injection molding process.
To achieve the above object, the present invention provides a sprue cutting type plastic lens forming device, which comprises:
the upper die base is provided with an upper die core, the upper die core is provided with a first cylindrical part extending downwards, and an upper die cavity is formed on the downward end surface of the first cylindrical part;
a lower die holder arranged relatively below the upper die holder, the upper end of the lower die holder is provided with a die parting surface which is close to the joint die with the upper die holder, the lower die holder is provided with a die core hole which extends downwards from the die parting surface, the first cylindrical part is downwards accommodated in the die core hole, one side of the lower die holder is provided with a pouring channel which is radially communicated with the die core hole, and one end of the pouring channel relatively far away from the die core hole is provided with an opening end;
a lower die core arranged in the lower die base, wherein the lower die core is provided with a second cylindrical part positioned in the die core hole, a lower die cavity is formed on the upward end surface of the second cylindrical part, the outer contour shapes of the first cylindrical part and the second cylindrical part are matched with the inner edge shape of the die core hole, the first cylindrical part can move along the die core hole, so that a lens forming die cavity is formed between the upper die cavity and the lower die cavity in the die core hole, the lower die base can move between a communication position and a closed position relative to the second cylindrical part, and when the lower die base is positioned at the communication position, the runner is communicated with the lens forming die cavity; when the lower die holder is located at the closed position, the pouring channel is relatively closed by the peripheral side of the second cylindrical part, so that the pouring channel is not communicated with the lens molding die cavity.
In another embodiment, the present invention provides a runner-cutting type plastic lens forming device, comprising:
the upper die holder is provided with an upper die core, the upper die core is provided with a first cylindrical part extending downwards, and an upper die cavity is formed on the downward end face of the first cylindrical part;
a lower die holder arranged at the opposite lower part of the upper die holder, the lower die holder is provided with a die core hole which extends downwards from the upper end of the lower die holder, the first cylindrical part is downwards accommodated in the die core hole, one side of the lower die holder is provided with a pouring channel which is radially communicated with the die core hole, and the pouring channel is provided with an opening end at one end which is relatively far away from the die core hole;
a lower die core arranged in the lower die base, wherein the lower die core is provided with a second cylindrical part positioned in the die core hole, a lower die cavity is formed on the upward end surface of the second cylindrical part, the outer contour shapes of the first cylindrical part and the second cylindrical part are matched with the inner edge shape of the die core hole, the first cylindrical part can move along the die core hole, a lens forming die cavity is formed between the upper die cavity and the lower die cavity, the lower die base can move between a communicating position and a closed position relative to the first cylindrical part, and when the lower die base is positioned at the communicating position, the runner is communicated with the lens forming die cavity; when the lower die base is positioned at the closed position, the pouring channel is relatively closed by the peripheral side of the first cylindrical part, so that the pouring channel is not communicated with the lens molding die cavity.
Preferably, the runner is flared gradually outward toward the open end.
Preferably, the material injection nozzle is provided with a material feeding channel, the material feeding channel is provided with a conical surface which is gradually reduced towards the opening end at the inner edge of the port which is towards the opening end, when the material injection nozzle is close to the opening end, the material feeding channel is communicated with the opening end, the material feeding channel is further provided with a plug rod in a penetrating way, the plug rod can move forwards and backwards relative to the material feeding channel, and the end part of the plug rod in the conical surface shape can be used for correspondingly sealing the port of the material feeding channel.
Preferably, the first cylindrical portion, the second cylindrical portion and the cavity hole have conical surfaces with the same taper.
Preferably, the lower die holder is disposed in a base, and the lower die holder can move up and down relative to the base.
The utility model has the advantages that: the utility model has the advantages of simple structure, no sprue and smooth outer contour; can effectively solve the problems of lens optical line defect and easy air covering caused by uneven injection pressure stress in the injection molding process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 to 4 are schematic views illustrating the operation of the first embodiment of the present invention during the injection molding operation.
Fig. 5 is a schematic diagram illustrating the operation of the first embodiment of the present invention when opening the mold.
Fig. 6 to 8 are schematic views illustrating the operation of the second embodiment of the present invention during the injection molding operation.
Fig. 9 is a schematic diagram illustrating the operation of the second embodiment of the present invention when opening the mold.
Detailed Description
Referring to fig. 1 to 4, a runner cutting type plastic lens molding apparatus of the present invention includes an upper mold base 1, an upper mold core 11, a lower mold base 2 and a lower mold core 31, wherein:
the upper mold core 11 is disposed in the upper mold base 1, the upper mold core 11 has a first cylindrical portion 12 extending downward, an outer contour of the first cylindrical portion 12 is cylindrical, and an upper mold cavity 13 is formed on a downward end surface of the first cylindrical portion 12.
The lower die holder 2 is arranged in a base 5, the lower die holder 2 is driven by a driving mechanism (not shown) to make the lower die holder 2 move up and down relative to the base 5, and the lower die holder 2 is arranged relatively below the upper die holder 1, the upper end of the lower die holder 2 is formed with a parting surface 21 for abutting against the upper die holder 1 to close the die, and the lower die holder 2 is provided with a die cavity hole 22 extending downwards from the parting surface 21, for example, for manufacturing a circular lens, the inner edge shape (i.e. the cross-sectional shape) of the die cavity hole 22 is circular and is matched with the outer contour shape of a circular lens to be manufactured, the first cylindrical part 12 is correspondingly and downwards accommodated in the die cavity hole 22, the upper die holder 1 and the upper die core 11 are synchronously driven by a driving mechanism (not shown in the figure), so that the first cylindrical part 12 can move up and down in the die cavity hole 22, and a runner 23 radially communicating with the die cavity hole 22 is arranged on one side of the lower die holder 2, one end of the die cavity hole 23 opposite to the die cavity hole 22 is gradually extended towards an opening end 231 of the runner, and an outer end 231 is formed as an extended runner 231.
The lower mold core 31 is disposed in the lower mold base 2, the lower mold core 31 has a second cylindrical portion 32 located in the mold core hole 22, and a lower mold cavity 33 is formed on the upward end surface of the second cylindrical portion 32, the outer contour of the second cylindrical portion 32 is cylindrical and also conforms to the shape of the inner edge of the mold core hole 22, the lower mold core 31 is driven by a pushing mechanism (not shown), so that the second cylindrical portion 32 can also move up and down in the mold core hole 22, and in addition, the first cylindrical portion 12, the second cylindrical portion 32 and the mold core hole 22 can also be made into conical surfaces with the same taper, which can reduce the relative friction phenomenon when the first cylindrical portion 12 and the second cylindrical portion 32 move in the mold core hole 22, and also has the effect of guiding the sliding stroke.
Furthermore, a material injection nozzle 41 can be relatively close to or receded from the open end 231, the material injection nozzle 41 has a material feeding channel 42, a tapered surface 43 tapering toward the open end 231 is formed on the inner edge of the port facing the open end 231 of the material feeding channel 42, and when the material injection nozzle 41 is close to the open end 231, the material feeding channel 42 is communicated with the open end 231, so that the melted and softened plastic can be sequentially injected into the runner 23 through the material feeding channel 42 and the open end 231, a plug rod 44 is further arranged in the material feeding channel 42, the plug rod 44 can be driven to move forward and backward relative to the material feeding channel 42, and the tapered end of the plug rod 44 can be used for correspondingly closing the port of the material feeding channel 42, thereby blocking the plastic from being continuously injected into the runner 23. The utility model discloses pass through and directly set up the communicating watering 23 with this mould benevolence hole 22 through one side of this die holder 2 for supply with this notes material mouth 41 and meet, can effectively shorten the distance between this notes material mouth 41 to this mould benevolence hole 22, with the internal pressure loss when reducing plastics by a wide margin and jet out, therefore more have the efficiency of the plastics that can accurate measurement get into this mould benevolence hole 22.
As shown in fig. 2 and 3, the upper mold base 1 drives the first cylindrical portion 12 of the upper mold core 11 to move between a first molding position a and a second molding position B along the core hole 22 during the downward mold closing process. As shown in fig. 2, when the first cylindrical portion 12 moves to the first molding position a, a plastic casting space S communicating with the gate 23 is formed between the upper cavity 13 and the lower cavity 33; as shown in fig. 3, when the upper mold base 1 and the lower mold base 2 are closed relatively, the first cylindrical portion 12 is driven to move to the second forming position B, so that a lens forming mold cavity P communicated with the runner 23 is formed in the mold cavity 22 between the upper mold cavity 13 and the lower mold cavity 33, the shape of the lens forming mold cavity P conforms to the shape of a lens product to be formed, and the side height H of the plastic pouring space S connected with the runner 23 is greater than the side height H of the lens forming mold cavity P connected with the runner 23.
As shown in fig. 3 and 4, the lower die holder 2 can move up and down between a communication position C on the upper side and a closed position on the lower side with respect to the second cylindrical portion 32. As shown in fig. 3, when the lower mold base 2 is located at the communicating position C, the pouring gate 23 is communicated with the lens forming cavity P, and as shown in fig. 4, when the lower mold base 2 is located at the closing position D, the pouring gate 23 is relatively closed by the peripheral side of the second cylindrical portion 32, so that the pouring gate 23 is not communicated with the lens forming cavity P.
And by the utility model discloses a water cuts off formula plastic lens forming device when carrying out injection molding operation, as shown in fig. 2, before this upper die base 1 and this lower die base 2 compound die, make this second column portion 32 be in a fixed position that does not shelter from this watering 23 and keep motionless, and the first column portion 12 of this last mould benevolence 11 is located this first shaping position A, and this time this lower die base 2 is located this intercommunication position C, after making and form the plastics pouring space S that is linked together with this watering 23 between this last mould cave 13 and this lower mould cave 33, can see through this notes material mouth 41 and pour into the plastics in this plastics pouring space S with the predetermined amount and be the melting softened shape plastics, because the side height H of this plastics pouring space S is greater than the side height H of this lens shaping die cavity P, when making plastics pour into this plastics pouring space S, be difficult for receiving the die cavity restriction of this last mould cave 13 and this lower mould cave 33 and block, in order to ensure its smooth and easy when pouring plastics, and then solve because of injection pressure stress unevenness can lead to the concave-convex-concave-convex flaw of lens, the concave-convex problem that the air flaw easily leads to the cladding.
Then, as shown in fig. 3, after the injection molding operation is completed, the first cylindrical portion 12 is moved downward to the second molding position B, so that the upper cavity 13 and the lower cavity 33 form a lens molding cavity P in the cavity hole 22, which is communicated with the runner 23, such that the lens molding cavity P is filled with the molten and softened plastic, and a lens with a predetermined size can be molded in the lens molding cavity P.
Then, as shown in fig. 4, the lower mold base 2 is moved downward from the communicating position C to the closing position D relative to the second cylindrical portion 32, and the runner 23 is disposed on one side of the lower mold base 2, so that when the lower mold base 2 moves downward, the runner 23 is synchronously driven to move downward, so that the periphery of the second cylindrical portion 32 can gradually close the runner 23, the runner 23 is not communicated with the lens forming mold cavity P, and the effect equivalent to shearing the runner stub bar is achieved, and the plastic at this time is in a molten and softened state, so that the periphery of the second cylindrical portion 32 does not have the problem of easy abrasion, and after the plastic is kept in a pressure maintaining state in the lens forming mold cavity P by the upper mold core 11 and the lower mold core 31, a lens without a runner and with a smooth outer contour can be directly manufactured. Furthermore, the utility model discloses on should watering 23 and directly set up in this die holder 2 one side, not only permeable die holder 2 removes and cuts off the plastic waste material that is located this watering 23, when guaranteeing follow-up taking out this plastic waste material and watering 23, outside its plastic waste material can not be scraped and produce the shred by upper and lower mould, the finished product external diameter more has the precision to can ensure this mould benevolence hole 22 opening and this go up the precision matched stack degree between mould benevolence 11.
Finally, as shown in fig. 5, the upper mold base 1 is opened upward, the first cylindrical portion 12 is moved out of the mold cavity hole 22, the lower mold core 31 is moved upward relative to the lower mold base 2, and the second cylindrical portion 32 of the lower mold core 31 is ejected out of the mold cavity hole 22, and then the lens is taken out from the lower mold cavity 33.
In addition, it should be noted that when the first cylindrical portion 12 moves to the first molding position a, a plastic pouring space S communicating with the runner 23 is formed between the upper mold cavity 13 and the lower mold cavity 33, and in addition to injecting a predetermined amount of molten and softened plastic into the plastic pouring space S through the injection nozzle 41 as described above, the molten and softened plastic may be injected and filled into the plastic pouring space S through the injection nozzle 41, and then, when the first cylindrical portion 12 moves to the second molding position B, the excess plastic is re-discharged into the feeding channel 42 of the injection nozzle 41 through the runner 23 by pushing the first cylindrical portion 12, without precise calculation, the plastic can be simply and easily quantitatively output, and when the excess plastic is discharged, the air in the plastic pouring space S can be simultaneously discharged, which can further avoid the problem of easy air covering, and can ensure consistent density of the lens manufactured under the action of pushing pressure.
As shown in fig. 6 to 9, the second embodiment of the present invention is different from the first embodiment in that, in the second embodiment, the lower die base 2 can move up and down between a communication position C at the lower side and a closed position D at the upper side relative to the first column portion 32 during the material cutting operation. As shown in fig. 7, when the lower mold base 2 is located at the communicating position C, the pouring channel 23 is communicated with the lens forming cavity P, and as shown in fig. 8, when the lower mold base 2 is located at the closing position D, the pouring channel 23 is relatively closed by the peripheral side of the first cylindrical portion 12, so that the pouring channel 23 is not communicated with the lens forming cavity P.
The second embodiment of the present invention is to perform the injection molding operation, as shown in fig. 6, before the upper mold base 1 and the lower mold base 2 are assembled, the second cylindrical portion 32 is located at a fixed position where the runner 23 is not blocked and remains stationary, the first cylindrical portion 12 of the upper mold core 11 is located at the first molding position a, and the lower mold base 2 is located at the communicating position C, so that the predetermined amount and the plastic in the molten and softened state can be injected into the plastic pouring space S through the material injection nozzle 41 after the plastic pouring space S communicated with the runner 23 is formed between the upper mold cavity 13 and the lower mold cavity 33.
Next, as shown in fig. 7, after the injection molding operation is completed, the first cylindrical portion 12 is moved downward to a second molding position B, so that the upper cavity 13 and the lower cavity 33 form a lens molding cavity P in the core hole 22, which is communicated with the runner 23.
Then, as shown in fig. 8, when the lower mold base 2 moves upward from the communicating position C to the closing position D relative to the first cylindrical portion 32, since the runner 23 is disposed on one side of the lower mold base 2, when the lower mold base 2 moves upward, the runner 23 is driven to move upward synchronously, so that the periphery of the first cylindrical portion 12 can gradually close the runner 23, and the runner 23 is not communicated with the lens molding cavity P, and the effect of shearing the runner stub bar can also be achieved.
Finally, as shown in fig. 9, the upper mold base 1 is opened upward, the first cylindrical portion 12 is moved out of the mold core hole 22, then the lower mold core 31 is moved upward, and the lower mold base 2 is moved downward to a material-taking position E, so that the second cylindrical portion 32 of the lower mold core 31 is ejected upward out of the mold core hole 22, and then the lens without a sprue and with a smooth outer contour can be taken out from the lower mold cavity 33, which also pertains to the equivalent application of the present invention.
Claims (6)
1. A kind of runner cuts off the plastic lens forming device of the type, characterized by, include:
the upper die holder is provided with an upper die core, the upper die core is provided with a first cylindrical part extending downwards, and an upper die cavity is formed on the downward end face of the first cylindrical part;
a lower die holder arranged relatively below the upper die holder, the upper end of the lower die holder is provided with a die parting surface which is close to the joint die with the upper die holder, the lower die holder is provided with a die core hole which extends downwards from the die parting surface, the first cylindrical part is downwards accommodated in the die core hole, one side of the lower die holder is provided with a pouring channel which is radially communicated with the die core hole, and one end of the pouring channel relatively far away from the die core hole is provided with an opening end;
a lower die core arranged in the lower die base, wherein the lower die core is provided with a second cylindrical part positioned in the die core hole, a lower die cavity is formed on the upward end surface of the second cylindrical part, the outer contour shapes of the first cylindrical part and the second cylindrical part are matched with the inner edge shape of the die core hole, the first cylindrical part can move along the die core hole, so that a lens forming die cavity is formed between the upper die cavity and the lower die cavity, the lower die base can move between a communicating position and a closed position relative to the second cylindrical part, and when the lower die base is positioned at the communicating position, the runner is communicated with the lens forming die cavity; when the lower die holder is located at the closed position, the periphery of the second cylindrical part is opposite to the pouring channel to seal the pouring channel, so that the pouring channel is not communicated with the lens molding cavity.
2. A kind of runner cuts off the plastic lens forming device of the type, characterized by, include:
the upper die base is provided with an upper die core, the upper die core is provided with a first cylindrical part extending downwards, and an upper die cavity is formed on the downward end surface of the first cylindrical part;
a lower die holder arranged relatively below the upper die holder, the lower die holder is provided with a die core hole which extends downwards from the upper end of the lower die holder, the first cylindrical part is downwards accommodated in the die core hole, one side of the lower die holder is provided with a pouring channel which is radially communicated with the die core hole, and an opening end is formed at one end of the pouring channel which is relatively far away from the die core hole;
a lower die core arranged in the lower die base, wherein the lower die core is provided with a second cylindrical part positioned in the die core hole, a lower die cavity is formed on the upward end surface of the second cylindrical part, the outer contour shapes of the first cylindrical part and the second cylindrical part are matched with the inner edge shape of the die core hole, the first cylindrical part can move along the die core hole, a lens forming die cavity is formed between the upper die cavity and the lower die cavity, the lower die base can move between a communicating position and a closed position relative to the first cylindrical part, and when the lower die base is positioned at the communicating position, the runner is communicated with the lens forming die cavity; when the lower die base is located at the closed position, the periphery of the first cylindrical part is opposite to the pouring channel so that the pouring channel is not communicated with the lens molding cavity.
3. The gate-truncated plastic lens molding apparatus according to claim 1 or 2, wherein the gate is flared toward the open end.
4. The runner-cut plastic lens molding device according to claim 1 or 2, further comprising a feeding nozzle capable of being relatively moved toward or away from the open end, wherein the feeding nozzle has a feeding channel, the feeding channel has a tapered surface formed at an inner edge of the port facing the open end, the tapered surface is gradually tapered toward the open end, and when the feeding nozzle is moved toward the open end, the feeding channel is in communication with the open end, the feeding channel further has a plug rod inserted therein, the plug rod can be moved forward or backward relative to the feeding channel, and the tapered end of the plug rod can be used to correspondingly close the port of the feeding channel.
5. The apparatus of claim 1 or 2, wherein the first cylindrical portion, the second cylindrical portion and the cavity bore have conical surfaces with the same taper.
6. The apparatus of claim 1 or 2, wherein the lower mold base is disposed in a base, and the lower mold base is capable of moving up and down relative to the base.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110130353 | 2021-08-17 | ||
| TW110130353A TW202220822A (en) | 2020-11-26 | 2021-08-17 | Plastic lens molding mold which is simple in structure and can directly make a flat outer contour lens |
| TW110133572A TWI774551B (en) | 2021-09-09 | 2021-09-09 | Sprue cut-off plastic lens molding device |
| TW110133572 | 2021-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217916561U true CN217916561U (en) | 2022-11-29 |
Family
ID=83807357
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210502403.0A Pending CN115703266A (en) | 2021-08-17 | 2022-05-10 | Runner cut-off type plastic lens forming device |
| CN202221104112.8U Active CN217916561U (en) | 2021-08-17 | 2022-05-10 | Runner cut-off type plastic lens forming device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210502403.0A Pending CN115703266A (en) | 2021-08-17 | 2022-05-10 | Runner cut-off type plastic lens forming device |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN115703266A (en) |
| TW (1) | TWI774551B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI259134B (en) * | 2005-02-16 | 2006-08-01 | Asia Optical Co Inc | Injection molding mold capable of sealing and blocking gate |
| TWI405656B (en) * | 2007-09-21 | 2013-08-21 | Hon Hai Prec Ind Co Ltd | Injection mold |
-
2021
- 2021-09-09 TW TW110133572A patent/TWI774551B/en active
-
2022
- 2022-05-10 CN CN202210502403.0A patent/CN115703266A/en active Pending
- 2022-05-10 CN CN202221104112.8U patent/CN217916561U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| TWI774551B (en) | 2022-08-11 |
| CN115703266A (en) | 2023-02-17 |
| TW202311005A (en) | 2023-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201064941Y (en) | Injection moulding with cutting mechanism | |
| US7837915B2 (en) | Injection molding process, resin molded product and mold | |
| CN217916561U (en) | Runner cut-off type plastic lens forming device | |
| CN213675267U (en) | Internal cutting mechanism of closed gate die | |
| CN105415588A (en) | Injection molding process and mold for remote controllers | |
| CN109551712A (en) | Four lower dies of upper mold mold-opening structure Composite bottle cap injection mold twice | |
| CN210336751U (en) | Injection mould of automatic blank in mould | |
| CN110181776B (en) | Injection mold capable of automatically cutting materials in mold | |
| TW202220822A (en) | Plastic lens molding mold which is simple in structure and can directly make a flat outer contour lens | |
| KR101037482B1 (en) | Automatic side gate cutting device for injection mold | |
| CN111872347A (en) | Injection molding device and injection molding method for internal gear of in-mold cutting gate | |
| CN113977878A (en) | In-mold cutting injection mold and using method thereof | |
| CN112959616A (en) | Multi-part micro-plastic part injection mold | |
| CN113442394A (en) | Method for producing orthodontic film, computer readable medium, mold and injection molding machine | |
| CN214982906U (en) | Injection mold capable of automatically cutting off water gap part | |
| CN206718376U (en) | A kind of injecting molding die of plastic spliced piece | |
| CN219360184U (en) | Automatic water gap cutting structure in mold | |
| CN209832495U (en) | Automatic gate structure of cutting of injection mold | |
| CN214926686U (en) | Internal cutting type bottle cap injection mold | |
| CN218196706U (en) | Mould for automatically staggering and cutting off runner and product | |
| CN212241930U (en) | Double-material injection mold capable of monitoring melt state in real time | |
| CN109366882B (en) | A mould for making cup holder flip | |
| CN214562677U (en) | Shearing pouring gate mechanism of injection mold | |
| CN219563987U (en) | Injection molding mold core of camera cover | |
| CN220482410U (en) | Mold structure for injection mold runner gate material weight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |