CN107042621B - Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve - Google Patents
Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve Download PDFInfo
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- CN107042621B CN107042621B CN201710222056.5A CN201710222056A CN107042621B CN 107042621 B CN107042621 B CN 107042621B CN 201710222056 A CN201710222056 A CN 201710222056A CN 107042621 B CN107042621 B CN 107042621B
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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
- B29C45/76—Measuring, controlling or regulating
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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
- B29C45/1703—Introducing an auxiliary fluid into the mould
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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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/57—Exerting after-pressure on the moulding material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses a water-assisted injection molding process water-gas injection and drainage control valve which is simple to operate and reliable to work and is mainly used for switching control of water injection and gas injection and drainage processes in a water-assisted injection molding process. The device mainly comprises a handle 14, a rotating rod 1, a through hole screw 2, a front cover 3, a water valve ball 4, a sealing ring 12, a connecting rod 5, a filler 6, an air valve ball 7, an adjusting pad 8, a rear cover 9, a limiting plug 15, a limiting spring 16, a limiting ball 17 and the like. The device innovatively integrates the water valve and the air valve together and synchronously acts, and realizes the control of water injection and gas injection drainage processes by connecting or disconnecting different water and air passages and matching the water injection and drainage device of the die. The device adopts various sealing modes such as packing sealing, sealing ring sealing and the like, and ensures that water and air leakage cannot occur in the working process. Is suitable for various water-assisted injection molding and the control of water injection and drainage of similar processes.
Description
Technical Field
The invention relates to a simple and reliable water injection and drainage control valve for a water-assisted injection molding process, which can be used for switching control of water injection and gas injection and drainage processes of the water-assisted injection molding process and similar processes.
Background
Water-assisted injection molding is an injection molding process in which high-pressure water is injected into a plastic melt to push the melt to fill the whole cavity in the traditional injection molding process to form a required hollow plastic part. Compared with the traditional injection molding process, the water-assisted injection molding can realize the production of more complex hollow parts and save more materials. Compared with the gas-assisted injection molding which is applied in large scale, the water-assisted product has smooth inner surface, and the high specific heat capacity of water greatly shortens the cooling time of the plastic part, thereby shortening the molding period. Therefore, the water-assisted injection molding process has high economy and very wide application prospect. The water-air injection and drainage control valve is used as an indispensable important part for water-assisted injection molding, mainly controls the switching of water injection and air injection and drainage processes in a water-assisted process, and has important influence on the quality of water-assisted products. Most of traditional water injection devices do not have independent water injection and drainage switching control devices, control and switching of water injection and drainage processes are achieved by controlling starting and stopping of a water pump and an air pump, operation is complex, efficiency is low, and control accuracy and reliability are not high. Some water auxiliary injection and drainage devices have the control function of partial water injection and gas injection drainage technological processes, but basically stay at the basic stage of channel switching, and can complete the control and switching of the water injection and drainage processes only by the cooperation of an external auxiliary valve device. Meanwhile, the structural complexity of the water injection and drainage device is increased after the water injection and drainage control function is partially integrated, the reliability is reduced, and the risk of water leakage and air leakage exists.
Disclosure of Invention
In order to solve the problems and meet the actual requirements of the water-assisted injection molding process, the invention provides a simple and reliable water injection and drainage control valve which is used for switching and controlling the water injection and gas injection and drainage processes of the water-assisted injection molding process and similar processes. As shown in fig. 1, the device can be divided into a water valve part and an air valve part according to functions, and the water valve part and the air valve part realize synchronous movement through a connecting rod. The structure mainly comprises: the device comprises a handle 14, a rotating rod 1, a through hole screw 2, a front cover 3, a water valve ball 4, a sealing ring 12, a connecting rod 5, a filler 6, an air valve ball 7, an adjusting pad 8, a rear cover 9, a limiting plug 15, a limiting spring 16, a limiting ball 17 and the like. Wherein both ends cross-section about dwang 1 and connecting rod 5 are regular hexagon and are convenient for reliably transmit the moment of torsion, all have the filler simultaneously between pole and the front and back lid, play sealed effect, prevent that water and gas from leaking. As shown in the section A-A of FIG. 2,base:Sub>A small hole is arranged on the through hole screw 2, andbase:Sub>A limit plug 15,base:Sub>A limit spring 16 andbase:Sub>A limit ball 17 are arranged in the small hole; meanwhile, two spherical grooves are arranged at corresponding positions of the rotating rod 1, and the included angle between the spherical grooves and a connecting line of the circle centers is 60 degrees. When the rotating rod 1 rotates to a corresponding position, the limiting ball 17 is pressed into the groove under the action of the limiting spring 16, so that the rotating rod is prevented from further rotating to give an in-place feedback to an operator; if the rotation is continued, the limit ball 17 is pressed into the small hole. The water valve ball 4 is a sphere, the upper and lower parts of which are provided with hexagon socket holes to be connected with the rotating rod 1 and the connecting rod 5, and as shown in the section B-B of figure 3, two holes with an included angle of 60 degrees are arranged in the middle equatorial region of the sphere to be communicated with each other; the sealing ring 12 wraps the water valve ball, is tightly attached to the shell, is provided with an opening corresponding to the pore passage of the shell, does not rotate along with the ball body, and plays a sealing role; the upper half part of the front cover 3 is correspondingly provided with three pore channels with an included angle of 60 degrees, and the pore channels are a water inlet, a water outlet and a water outlet from left to right in sequence; the gas valve section is similar to the water valve section except that there is one less passageway in the front cover 3. When the handle 14 controls the water valve ball 4 and the air valve ball 7 to rotate, the corresponding water hole or air hole can be easily disconnected or connected to switch the water filling state or the water discharging state.
Compared with the technical background, the invention has the following beneficial effects: (1) The water injection and drainage switching and controlling device is independently arranged, so that the operation is simple, the work is reliable, the operation cost is greatly reduced, and the efficiency is improved; (2) The water valve and the air valve are creatively integrated, so that the equipment integration level is improved, the control accuracy is improved, and the product quality is favorably ensured; (3) The sealing means such as sealing of the sealing ring and sealing of the packing are combined, and air leakage and water leakage are avoided in the working process.
Drawings
FIG. 1-is a final assembly drawing
FIG. 2 isbase:Sub>A sectional view taken along line A-A
FIG. 3 is a sectional view taken along line B-B
FIG. 4 is a sectional view taken along line C-C
FIG. 5 is a schematic diagram of the operation
Detailed description of the preferred embodiments
The invention is further described below with reference to the accompanying drawings:
the invention can be divided into an upper part and a lower part as shown in figure 1: the water valve is responsible for water injection and water drainage, and the air valve is responsible for air injection. The main structure includes: the device comprises a handle 14, a rotating rod 1, a through hole screw 2, a front cover 3, a filler 6, a water valve ball 4, a sealing ring 12, a connecting rod 5, an air valve ball 7, an adjusting pad 8, a rear cover 9, a limiting plug 15, a limiting spring 16 and a limiting ball 17. The handle 14 is arranged on the rotating rod 1 and is connected with the water valve ball 4 and then is connected with the air valve ball 7 through the connecting rod 5, so that the purpose of co-rotation is achieved. And a filler 6 is arranged between the rotating rod 1, the connecting rod 5 and the shell, and plays a role in sealing to prevent water and air from leaking. And is generally selected differently depending on the type of media and pressure. The front and rear covers are connected by a screw 11. The adjusting pad 8 plays a role in sealing and adjusting the gap between the front cover and the rear cover, and can offset the processing error to a certain extent. The sealing ring 12 covers the water valve ball 4 and the air valve ball 7 and is provided with an opening at the corresponding position of the pore passage of the front cover 3.
As shown in the section A-A of FIG. 2, the through-hole screw 2 is provided withbase:Sub>A small hole, andbase:Sub>A limit plug 15,base:Sub>A limit spring 16 andbase:Sub>A limit ball 17 are arranged in the small hole. The limiting plug 15 is installed in the small hole of the through hole screw 2 through threads and provides support for the limiting spring 16. Meanwhile, two spherical grooves are arranged at corresponding positions of the rotating rod 1, and the included angle between the spherical grooves and a connecting line of the circle centers is 60 degrees. When the rotating rod 1 rotates to a corresponding position, the limiting ball 17 is pressed into the groove under the action of the limiting spring 16, and the rotating rod is prevented from further rotating to give an in-place feedback to an operator; if the rotation is continued, the limit ball 17 is pressed into the small hole. Therefore, the design can give feedback to an operator when the water injection and drainage valve is in the 'water injection' state, and give feedback to the operator when the water injection and drainage valve is rotated by 60 degrees to be switched to the 'gas injection and drainage' state. This can effectively improve the operation accuracy.
As shown in the section B-B of fig. 3, two holes with an included angle of 60 degrees are arranged in the middle of the water valve ball and communicated, 3 holes with an included angle of 60 degrees are also arranged at the corresponding positions of the front cover 3, and the front cover sequentially comprises a water inlet, a water outlet and a water outlet from left to right. The water inlet is connected with a water pump for providing high-pressure water, the water outlet is connected with the water inlet of the mold water injection and drainage device through a hose, and the water outlet is connected with a drainage pool. The water valve ball 4 can be connected with the water inlet and the water outlet or connected with the water outlet and the water outlet or not connected with the water inlet and the water outlet after rotating 60 degrees.
As shown in section C-C of fig. 4, the air valve portion is similar to the water valve portion except that the air valve has only an air inlet and an air outlet. The air inlet is communicated with the air pump through a hose to provide high-pressure air. The air outlet is connected with the air inlet of the water injection and drainage device of the mould through a hose. When in use, the handle 14 controls the water valve ball 4 and the air valve ball 7 to synchronously rotate to select different channels to be switched on or off so as to achieve the purpose of switching the water filling and draining states.
The working process of the whole set of water injection and drainage device is as follows: after the injection molding of the mold is finished, water injection is started, the water injection and drainage control valve is rotated to a water injection position by the operating handle 14, and the situation that the water injection and drainage control valve is in place is shown after feedback is sensed. At the moment, the working state of the water and gas injection and exhaust control valve is shown as the water injection state in fig. 5, the water valve ball 4 is communicated with the water inlet and the water outlet, and the gas valve ball 7 is not communicated with any interface. And high-pressure water flows out of the water pump and enters the die water injection and drainage device through the water inlet and the water outlet. At this point the water-assisted injection molding process enters the water breakthrough phase.
And after filling is finished and certain pressure maintaining cooling time is elapsed, gas injection and water drainage are started, and the water gas injection and drainage control valve is switched to a water drainage state. The operating handle 14 drives the water valve ball and the air valve ball 7 to rotate 60 degrees counterclockwise simultaneously, so that the water outlet is communicated with the water outlet, the air inlet is communicated with the air outlet, and the air inlet and the air outlet are communicated as shown in the 'gas injection and drainage' state of fig. 5. Then the high-pressure gas is discharged from the gas pump, enters the die water injection and drainage device through the gas inlet and the gas outlet, and water is extruded by the pressure gas, discharged from the die water injection and drainage device, and discharged to a water pool through the water outlet and the water outlet of the water injection and drainage control valve.
After the drainage is finished, the water and gas injection and drainage control valve handle 14 is operated to rotate by 60 degrees, at the moment, the water outlet and inlet, the water gap, the water outlet, the air inlet and the air outlet are not communicated, neither water injection nor drainage is in a 'shutdown' state as shown in fig. 5, and the next molding cycle is prepared.
Claims (2)
1. The utility model provides a simple and easy reliable water auxiliary injection moulding technology aqueous vapor notes row control valve which characterized in that: this device can be divided into two parts of water valve and air valve, realizes synchronous motion through the connecting rod, and its structure mainly includes: the device comprises a handle (14), a rotating rod (1), a through hole screw (2), a front cover (3), a water valve ball (4), a sealing ring (12), a connecting rod (5), a filler (6), an air valve ball (7), an adjusting pad (8), a rear cover (9), a limiting plug (15), a limiting spring (16), a limiting ball (17) and the like; the handle (14) controls the water valve ball (4) and the air valve ball (7) to synchronously rotate through the rotating rod (1) and the connecting rod (5); the sealing ring (12) is wrapped on the equator of the water valve ball (4) and the air valve ball (7), and an opening is formed at the position of the front cover corresponding to the channel; the filler (6) is wrapped around the rotating rod (1) and the connecting rod (5) to play a role in sealing and prevent water and air from leaking; a small hole is arranged on the through hole screw (2), and a limit plug (15), a limit spring (16) and a limit ball (17) are arranged in the small hole; two spherical grooves are arranged at corresponding positions of the rotating rod (1), and the included angle between the spherical grooves and a connecting line of the circle centers is 60 degrees; when the rotating rod (1) rotates to a corresponding position, the limiting ball (17) is pressed into the groove under the action of the limiting spring (16) to prevent the rotating rod from further rotating and give an in-place feedback to an operator; if the rotation is continued, the limiting ball (17) is pressed into the small hole; the water valve ball (4) is a sphere, and two holes with an included angle of 60 degrees are formed in the equatorial region in the middle of the sphere and are communicated with each other; the upper half part of the front cover (3) is correspondingly provided with three pore channels with an included angle of 60 degrees, and the pore channels are a water inlet, a water outlet and a water outlet from left to right in sequence; the lower half part of the air valve is only provided with an air inlet and an air outlet corresponding to the front cover (3); when the handle (14) controls the water valve ball (4) and the air valve ball (7) to rotate, the corresponding water hole or air hole can be easily disconnected or connected, so that the water filling state or the water discharging state can be switched.
2. The simple and reliable water-assisted injection molding process water injection and drainage control valve as claimed in claim 1, is characterized in that: the sealing ring (12) is positioned at the equator position of the water valve ball (4) and is coated on the surface of the ball body but does not rotate along with the ball body, and the surface of the sealing ring (12) which is jointed with the water valve ball (4) is also a spherical surface, so that the sealing is reliable, and air leakage or water leakage is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222056.5A CN107042621B (en) | 2017-04-06 | 2017-04-06 | Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222056.5A CN107042621B (en) | 2017-04-06 | 2017-04-06 | Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve |
Publications (2)
| Publication Number | Publication Date |
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| CN107042621A CN107042621A (en) | 2017-08-15 |
| CN107042621B true CN107042621B (en) | 2023-04-07 |
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| CN201710222056.5A Active CN107042621B (en) | 2017-04-06 | 2017-04-06 | Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve |
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Citations (6)
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| WO2000007794A1 (en) * | 1998-08-01 | 2000-02-17 | Crewe Precision Engineering Limited | Nozzle valve for gas assisted injection moulding |
| WO2005097454A1 (en) * | 2004-04-01 | 2005-10-20 | Microcell | Device for controlling a media flow preferably at very high pressures |
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| CN105599246A (en) * | 2016-01-22 | 2016-05-25 | 华东交通大学 | Simple and reliable water injecting and draining device for water-driving projectile assisted injection molding process |
| CN105643874A (en) * | 2016-01-22 | 2016-06-08 | 华东交通大学 | Gas injection device used for gas-drive auxiliary pellet injection molding technology |
Family Cites Families (8)
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| CN1170840A (en) * | 1996-07-11 | 1998-01-21 | 陈志坚 | Multiple channel ball core valve |
| DE19740392A1 (en) * | 1997-09-05 | 1999-03-25 | Rainer Mueller | Fourway cock with housing with four inlets or outlets |
| CN100348401C (en) * | 2002-05-22 | 2007-11-14 | 日立麦克赛尔株式会社 | Forming part, injection moulding method and device |
| CN100546805C (en) * | 2006-03-03 | 2009-10-07 | 华南理工大学 | Water aided injection forming device |
| CN101865531A (en) * | 2010-06-09 | 2010-10-20 | 黎晚滔 | Water and gas coupled valve of gas water heater |
| EP3143315B1 (en) * | 2014-05-14 | 2020-03-18 | Belimo Holding AG | 6-way valve and hvac system with such a 6-way valve |
| CN204445433U (en) * | 2015-01-23 | 2015-07-08 | 捷永电器制造(深圳)有限公司 | A kind of air bleeding valve |
| CN204610959U (en) * | 2015-05-06 | 2015-09-02 | 台州中天卫厨有限公司 | One key escape cock |
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- 2017-04-06 CN CN201710222056.5A patent/CN107042621B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007794A1 (en) * | 1998-08-01 | 2000-02-17 | Crewe Precision Engineering Limited | Nozzle valve for gas assisted injection moulding |
| WO2005097454A1 (en) * | 2004-04-01 | 2005-10-20 | Microcell | Device for controlling a media flow preferably at very high pressures |
| CN202708175U (en) * | 2012-04-18 | 2013-01-30 | 佛山市日丰企业有限公司 | Valve ball and frost valve provided with the same |
| CN103407087A (en) * | 2013-08-26 | 2013-11-27 | 华东交通大学 | Water-assisted (co-injection) injection mold for complex-formed tube and stick plastic parts |
| CN105599246A (en) * | 2016-01-22 | 2016-05-25 | 华东交通大学 | Simple and reliable water injecting and draining device for water-driving projectile assisted injection molding process |
| CN105643874A (en) * | 2016-01-22 | 2016-06-08 | 华东交通大学 | Gas injection device used for gas-drive auxiliary pellet injection molding technology |
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| CN107042621A (en) | 2017-08-15 |
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