CN112895336A - Flash-free liquid silica gel mold - Google Patents
Flash-free liquid silica gel mold Download PDFInfo
- Publication number
- CN112895336A CN112895336A CN202110357824.4A CN202110357824A CN112895336A CN 112895336 A CN112895336 A CN 112895336A CN 202110357824 A CN202110357824 A CN 202110357824A CN 112895336 A CN112895336 A CN 112895336A
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- CN
- China
- Prior art keywords
- plate
- cavity
- fixed
- mold
- fixing
- 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.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title description 6
- 239000007788 liquid Substances 0.000 title description 6
- 239000000741 silica gel Substances 0.000 title description 6
- 229910002027 silica gel Inorganic materials 0.000 title description 6
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims 4
- 239000007924 injection Substances 0.000 claims 4
- 239000003292 glue Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 20
- 238000004513 sizing Methods 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
- B29C2045/2743—Electrical heating element constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
- B29C2045/2824—Needle valves driven by an electric motor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a flash-free liquid silicone rubber mold which comprises an upper mold and a lower mold, wherein the upper mold is divided into a front mold fixing plate, a nozzle fixing plate and a cavity fixing upper plate from top to bottom, the lower mold is divided into a cavity fixing middle plate, a cavity fixing lower plate and a rear mold fixing plate from top to bottom, a placing cavity is arranged in the front mold fixing plate, a power source is fixed in the placing cavity, a nozzle sleeve penetrating through the cavity fixing upper plate is arranged on the nozzle fixing plate, and a material control device connected with the power source is arranged in the inner cavity of the nozzle sleeve. The adjustable electric needle valve device is additionally arranged, so that each product can be independently adjusted in glue feeding amount, stable production of multiple cavities is realized, and materials are always kept in a normal-temperature molten state in a runner through heating and cooling cooperation among a plurality of modules.
Description
Technical Field
The invention relates to the relevant field of molds, in particular to a liquid silica gel mold without flash.
Background
The liquid silica gel is formed by mixing various rubber materials, the mixed material can be automatically vulcanized at high temperature due to the material characteristics, and the vulcanized material is a solid elastomer which can not be molded by flowing; however, the product is molded in the mold by heating, and the temperature in each area is kept between 170 and 200 ℃ while heating; in the molding process, defects such as flash are often generated because the feeding time and the gram weight cannot be precisely controlled.
Disclosure of Invention
According to the technical problem to be solved by the invention, the invention provides the liquid silica gel mould without the flash.
In order to achieve the purpose, the flash-free liquid silicone rubber mold comprises an upper mold and a lower mold, wherein the upper mold is divided into a front mold fixing plate, a nozzle fixing plate and a cavity fixing upper plate from top to bottom, the lower mold is divided into a cavity fixing middle plate, a cavity fixing lower plate and a rear mold fixing plate from top to bottom, a placing cavity is formed in the front mold fixing plate, a power source is fixed in the placing cavity, a nozzle sleeve penetrating through the cavity fixing upper plate is arranged on the nozzle fixing plate, and a material control device connected with the power source is arranged in the inner cavity of the nozzle sleeve.
Further, place the chamber and be provided with a plurality of groups, all placed the power supply in every group, the power supply is servo motor to servo motor all is last to be provided with position sensor.
Furthermore, a cooling auxiliary block is fixed inside the nozzle fixing plate body around the nozzle sleeve, a plurality of cooling water paths are formed inside the cooling auxiliary block, and a first heating plate is fixed inside the cavity fixing upper plate body around the preformed hole of the nozzle sleeve.
Furthermore, the binding surfaces of the cavity fixing upper plate and the cavity fixing lower plate are provided with cavities, the cavity upper plate and the cavity lower plate are fixed in the cavities, a cavity fixing middle plate is placed between the cavity fixing upper plate and the cavity fixing lower plate, and the cavities are arranged at corresponding positions of the cavity fixing middle plate and buckled with the cavity upper plate and the cavity lower plate.
Furthermore, a second heating plate is fixed at the bottom of the lower plate of the cavity.
Furthermore, frame heat insulation plates are arranged on the periphery of the upper die and the periphery of the lower die, a heat insulation layer is further fixed inside the upper die and the lower die, the heat insulation layer comprises a first heat insulation plate and a second heat insulation plate, the first heat insulation plate is located between the nozzle fixing plate and the cavity fixing upper plate, and the second heat insulation plate is located between the cavity fixing lower plate and the rear die fixing plate.
Furthermore, accuse material device is including sealing needle fixed block, sealing needle and sealing needle protective sheath, the fixed block is connected with sealing the needle top to meet with servo motor, the needle body cover of sealing the needle is in the needle of penetrating the mouth says, it is fixed with the needle protective sheath to penetrate the mouth top, it has the nozzle cover to penetrate the outside cover of mouth, nozzle cover bottom is fixed with the nozzle head, nozzle head jet says and is connected with the needle of penetrating in the mouth way.
Furthermore, the nozzle heads are connected with at least 2 groups of needle channels, material channels are arranged among the needle channels and are communicated with the needle channels, and inlets of the material channels are connected with the sprue ejector nozzles fixed in the front die fixing plate.
Has the advantages that: according to the flash-free liquid silica gel mold, the adjustable electric needle valve device is additionally arranged, so that the glue feeding amount of each product can be independently adjusted, stable production of multiple cavities is realized, and the materials are always kept in a normal-temperature molten state in a runner through heating and cooling cooperation among the modules.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a cross-sectional view of a material control device of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
FIG. 3 is an enlarged view of part A of the present invention.
In the figure: 1 is a servo motor; 2 is a cooling auxiliary block; 3 is a first heating plate; 4 is a cavity upper plate; 5 is a cavity middle plate; 6 is a cavity lower plate; 7 is a second heating plate; 8 is a sealing needle fixing block; 9 is a seal needle; 10 is a needle sealing protective sleeve; 11 is a nozzle sleeve; 12 is a nozzle; 13 is a nozzle head; 14 is a nozzle fixing plate; 15 is a cavity fixed upper plate; 16 is a cavity fixed middle plate; 17 is a cavity fixing lower plate; 18 is a rear mold fixing plate; 19 is a sprue bush; 20 is a positioning ring; 21 is a front mould fixing plate; 23 is a first heat insulation plate; 24 is a frame heat insulation plate; 26 is a second heat insulation plate; and 27 is a material channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
As shown in fig. 1-3, the flash-free liquid silicone rubber mold comprises an upper mold and a lower mold, wherein the upper mold is divided into a front mold fixing plate 21, a nozzle fixing plate 14 and a cavity fixing upper plate 15 from top to bottom, the lower mold is divided into a cavity fixing middle plate 16, a cavity fixing lower plate 17 and a rear mold fixing plate 18 from top to bottom, a placing cavity is arranged inside the front mold fixing plate 21, a power source is fixed in the placing cavity, the nozzle fixing plate 14 is provided with a nozzle sleeve 11 penetrating through the cavity fixing upper plate 15, and a material control device connected with the power source is arranged in an inner cavity of the nozzle sleeve 11.
Wherein, when the sizing material enters the material channel 27 through the sprue 19 in the positioning ring 20 and enters the needle channel in the nozzle 12 along the material channel 27, the sealing needle 9 ascends and descends under the control of the servo motor 1, the sizing material enters the needle channel and is injected into the cavity through the nozzle head 13 when ascending, and the sizing material is not injected any more due to the blocking of the sealing needle 9 when descending, so that the gram weight of the sizing material is accurately controlled.
As shown in fig. 1, the placing cavity is provided with a plurality of groups, a power source is placed in each group, the power source is a servo motor 1, and a position sensor is arranged on the servo motor 1.
The sensor senses the position of the sealing needle 9 and transmits a position signal to the controller, and the controller receives the signal and drives the servo motor 1 to move the sealing needle 9 to a set position for feeding and closing.
As shown in fig. 1-3, a cooling auxiliary block 2 is fixed inside the nozzle fixing plate 14 around the nozzle sleeve 11, a plurality of cooling water channels are formed inside the cooling auxiliary block 2, and a first heating plate 3 is fixed inside the cavity fixing upper plate 15 around a preformed hole of the nozzle sleeve 11.
Wherein, the sizing material needs to work at 170-.
As shown in fig. 1-3, the binding surfaces of the upper cavity fixing plate 15 and the lower cavity fixing plate 17 are both provided with a cavity, the cavity is internally fixed with an upper cavity plate 4 and a lower cavity plate 6, a middle cavity fixing plate 16 is placed between the upper cavity fixing plate 15 and the lower cavity fixing plate 17, the middle cavity fixing plate 16 is provided with a cavity at a corresponding position to be buckled with the upper cavity plate 4 and the lower cavity plate 6, the bottom of the lower cavity plate 6 is fixed with a second heating plate 7, frame insulation plates 24 are arranged around the upper die and the lower die, an insulation layer is further fixed inside the upper die and the lower die, the insulation layer comprises a first insulation plate 23 and a second insulation plate 26, the first insulation plate 23 is located between the nozzle fixing plate 14 and the upper cavity fixing plate 15, and the second insulation plate 26 is located between the lower cavity fixing plate 17 and the.
The rubber material passes through a plurality of cooling water paths arranged in the cooling auxiliary block 2, the rubber material is prevented from being cooled and then is overcooled when reaching the bottom, the rubber material in the needle path is heated through the first heating plate 3, the heating and cooling processes are required to be simultaneously realized on the mold of the invention and cannot be alternated, so that a first heat insulation plate 23 and a second heat insulation plate 26 are arranged between the nozzle fixing plate 14 and the cavity fixing upper plate 15, between the cavity fixing lower plate 17 and the rear mold fixing plate 18, and the periphery of the cavity fixing lower plate 17 is wrapped by frame heat insulation plates 24, so that the heat is prevented from being diffused to the periphery in the heating process, and the constant temperature is effectively kept.
As shown in fig. 3, the material control device includes a needle sealing fixing block 8, a needle sealing 9 and a needle sealing protective sleeve 10, the fixing block 8 is connected with the top end of the needle sealing 9 and is connected with the servo motor 1, the needle body of the needle sealing 9 is sleeved in the needle channel of the nozzle 12, the needle sealing protective sleeve 10 is fixed at the top of the nozzle 12, the nozzle sleeve 11 is sleeved outside the nozzle 12, the nozzle head 13 is fixed at the bottom of the nozzle sleeve 11, and the needle channel of the nozzle head 13 is connected with the needle channel in the nozzle 12.
Wherein, the sizing material gets into in the material way 27, and servo motor 1 lifts the needle 9 from the needle way through the sensor, and the sizing material gets into the needle way to get into the die cavity through the passageway in the nozzle head 13, and the sizing material is penetrated and is reached after the certain time, and servo motor 1 puts down needle 9, closes the needle way and blocks the sizing material.
As shown in fig. 1 and 3, the nozzle head 13 is provided with at least 2 groups of needle channels connected with the nozzle head, material channels 27 are arranged between the needle channels and are communicated with the needle channels, and the inlets of the material channels 27 are connected with the spouts of the squirts 19 fixed in the front die fixing plate 21.
Wherein, the material channel 27 is divided into a plurality of nozzles 12 from the nozzle of the sprue 19, and can realize the simultaneous and/or non-simultaneous glue forming of a plurality of cavities.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (8)
1. Flash-free liquid silicone rubber mold, which comprises an upper mold and a lower mold and is characterized in that: the mold comprises an upper mold and a lower mold, and is characterized in that the upper mold is divided into a front mold fixing plate (21), a nozzle fixing plate (14) and a cavity fixing upper plate (15) from top to bottom, the lower mold is divided into a cavity fixing middle plate (16), a cavity fixing lower plate (17) and a rear mold fixing plate (18) from top to bottom, a placing cavity is arranged inside the front mold fixing plate (21), a power source is fixed in the placing cavity, a nozzle sleeve (11) penetrating through the cavity fixing upper plate (15) is arranged on the nozzle fixing plate (14), and a material control device connected with the power source is arranged in the inner cavity of the nozzle sleeve.
2. The flash-free liquid silicone rubber mold according to claim 1, wherein: the placing cavity is provided with a plurality of groups, a power source is placed in each group, the power source is a servo motor (1), and a position sensor is arranged on each servo motor (1).
3. The flash-free liquid silicone rubber mold according to claim 1, wherein: penetrate mouth fixed plate (14) plate body inside and be fixed with around penetrating mouth cover (11) cooling and assist piece (2), a plurality of cooling water routes are seted up to cooling assistance piece (2) inside, fixed upper plate of die cavity (15) plate body inside is fixed with first hot plate (3) around penetrating mouth cover (11) preformed hole.
4. The flash-free liquid silicone rubber mold according to claim 1, wherein: the fixed upper plate of die cavity (15) and the fixed hypoplastron of die cavity (17) binding face all open there is the cavity, the cavity internal fixation has die cavity upper plate (4) and die cavity hypoplastron (6), place the fixed medium plate of die cavity (16) between fixed upper plate of die cavity (15) and the fixed hypoplastron of die cavity (17), the fixed medium plate of die cavity (16) is seted up cavity and die cavity upper plate (4) and die cavity hypoplastron (6) lock in relevant position.
5. The flash-free liquid silicone rubber mold according to claim 4, wherein: and a second heating plate (7) is fixed at the bottom of the cavity lower plate (6).
6. The flash-free liquid silicone rubber mold according to claim 1, wherein: go up mould and lower mould all around and all be provided with frame heat insulating board (24), inside still is fixed with the insulating layer, the insulating layer includes first heat insulating board (23) and second heat insulating board (26), first heat insulating board (23) are located and penetrate between mouth fixed plate (14) and the fixed upper plate of die cavity (15), and second heat insulating board (26) are located between fixed hypoplastron of die cavity (17) and back mould fixed plate (18).
7. The flash-free liquid silicone rubber mold according to claim 1, wherein: accuse material device is including sealing needle fixed block (8), sealing needle (9) and sealing needle protective sheath (10), fixed block (8) are connected with sealing needle (9) top to meet with servo motor (1), the needle body cover of sealing needle (9) is in the needle of penetrating mouth (12) is said, penetrate mouth (12) top and be fixed with sealing needle protective sheath (10), penetrate the outside cover of mouth (12) and have injection mouth cover (11), injection mouth cover (11) bottom is fixed with injection mouth head (13), injection mouth head (13) are said and are penetrated the needle in mouth (12) and are said and be connected.
8. The flash-free liquid silicone rubber mold according to claim 7, wherein: the nozzle heads (13) are connected with at least 2 groups of needle channels, material channels (27) are arranged between the needle channels and are communicated with the needle channels, and inlets of the material channels (27) are connected with nozzles of the sprue bushing (19) fixed in the front die fixing plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110357824.4A CN112895336A (en) | 2021-04-01 | 2021-04-01 | Flash-free liquid silica gel mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110357824.4A CN112895336A (en) | 2021-04-01 | 2021-04-01 | Flash-free liquid silica gel mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112895336A true CN112895336A (en) | 2021-06-04 |
Family
ID=76110326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110357824.4A Pending CN112895336A (en) | 2021-04-01 | 2021-04-01 | Flash-free liquid silica gel mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112895336A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19943797A1 (en) * | 1999-09-13 | 2001-03-15 | Yudo Co | Polymer injection system for an injection molding system, has single piston feeding polymer to all injection nozzles |
| JP2001105458A (en) * | 1999-10-13 | 2001-04-17 | Yudo Ind Co Ltd | Resin injection device for injection molding machine having many valve pins operated by one piston |
| JP2002067112A (en) * | 2000-09-04 | 2002-03-05 | Mitsui Chemicals Inc | Method and apparatus for injection compression molding for moldings by multi-cavity method |
| CN1694792A (en) * | 2002-09-18 | 2005-11-09 | 标准模具有限公司 | Metering device for a nozzle of a hot runner injection molding apparatus |
| CN104507658A (en) * | 2012-07-12 | 2015-04-08 | 奥托门纳创新有限责任公司 | Injection molding apparatus with active valve pin disengagement |
| CN110076964A (en) * | 2019-06-10 | 2019-08-02 | 厦门豪特维思科技有限公司 | A kind of liquid-state silicon gel cold runner die |
| CN211389962U (en) * | 2019-11-11 | 2020-09-01 | 石狮市通达电机有限公司 | Cold runner mold |
| CN111907014A (en) * | 2020-07-29 | 2020-11-10 | 哈希斯热流道科技（苏州）有限公司 | Sprue needle valve device of multi-sprue hot runner injection mold and control method |
| CN212352759U (en) * | 2020-07-29 | 2021-01-15 | 哈希斯热流道科技（苏州）有限公司 | Sprue needle valve device of multi-sprue hot runner injection mold |
| CN113547701A (en) * | 2020-04-24 | 2021-10-26 | 安波福中央电气（上海）有限公司 | Liquid silica gel valve needle system |
-
2021
- 2021-04-01 CN CN202110357824.4A patent/CN112895336A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19943797A1 (en) * | 1999-09-13 | 2001-03-15 | Yudo Co | Polymer injection system for an injection molding system, has single piston feeding polymer to all injection nozzles |
| JP2001105458A (en) * | 1999-10-13 | 2001-04-17 | Yudo Ind Co Ltd | Resin injection device for injection molding machine having many valve pins operated by one piston |
| JP2002067112A (en) * | 2000-09-04 | 2002-03-05 | Mitsui Chemicals Inc | Method and apparatus for injection compression molding for moldings by multi-cavity method |
| CN1694792A (en) * | 2002-09-18 | 2005-11-09 | 标准模具有限公司 | Metering device for a nozzle of a hot runner injection molding apparatus |
| CN104507658A (en) * | 2012-07-12 | 2015-04-08 | 奥托门纳创新有限责任公司 | Injection molding apparatus with active valve pin disengagement |
| CN110076964A (en) * | 2019-06-10 | 2019-08-02 | 厦门豪特维思科技有限公司 | A kind of liquid-state silicon gel cold runner die |
| CN211389962U (en) * | 2019-11-11 | 2020-09-01 | 石狮市通达电机有限公司 | Cold runner mold |
| CN113547701A (en) * | 2020-04-24 | 2021-10-26 | 安波福中央电气（上海）有限公司 | Liquid silica gel valve needle system |
| CN111907014A (en) * | 2020-07-29 | 2020-11-10 | 哈希斯热流道科技（苏州）有限公司 | Sprue needle valve device of multi-sprue hot runner injection mold and control method |
| CN212352759U (en) * | 2020-07-29 | 2021-01-15 | 哈希斯热流道科技（苏州）有限公司 | Sprue needle valve device of multi-sprue hot runner injection mold |
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