CN108237658A - The drainage by suction technique of drainage by suction system, molding machine and molding machine - Google Patents

The drainage by suction technique of drainage by suction system, molding machine and molding machine Download PDF

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Publication number
CN108237658A
CN108237658A CN201810006223.7A CN201810006223A CN108237658A CN 108237658 A CN108237658 A CN 108237658A CN 201810006223 A CN201810006223 A CN 201810006223A CN 108237658 A CN108237658 A CN 108237658A
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CN
China
Prior art keywords
tank
control valve
steam
vacuum
drainage
Prior art date
Application number
CN201810006223.7A
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Chinese (zh)
Inventor
不公告发明人
Original Assignee
泉州台商投资区铭源机械设备有限公司
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Application filed by 泉州台商投资区铭源机械设备有限公司 filed Critical 泉州台商投资区铭源机械设备有限公司
Priority to CN201810006223.7A priority Critical patent/CN108237658A/en
Priority to CN201510717342.XA priority patent/CN105252695B/en
Publication of CN108237658A publication Critical patent/CN108237658A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/58Moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/048Expandable particles, beads or granules

Abstract

The invention discloses the drainage by suction techniques of a kind of drainage by suction system, molding machine and molding machine, including rack and shaping mechanism, shaping mechanism includes mold and steam boiler, and mold includes cover half, dynamic model and the die cavity between fixed half and moving half, and drainage by suction system has further included:Vacuum air pump;The cover half cooling chamber being opened on cover half;The dynamic model cooling chamber being opened on dynamic model;The steam inlet and steam (vapor) outlet being connected with die cavity;Vacuum tank offers tank steam inlet, tank vacuum gas port, tank atmospheric air port, tank discharge outlet on the vacuum tank;Spray tube is extended to inside vacuum tank;Pass through pipeline connection between tank steam inlet and steam (vapor) outlet;Steam inlet control valve is equipped at tank steam inlet;Steam boiler gas outlet is connected with steam inlet;Vacuum air pump is connected with steam boiler.The present invention is discharged rapidly moisture in die cavity by negative pressure, and product surface moisture is greatly reduced, and has effects of energy saving and emission reduction.The invention also discloses a kind of drainage by suction techniques.

Description

The drainage by suction technique of drainage by suction system, molding machine and molding machine

The application be application No. is:201510717342.X the applying date:On October 29th, 2015, entitled " band is negative The divisional application of the patent of invention of the foamed molding machine of pressure water system ".

Technical field

The present invention relates to material transfer fields.

Background technology

Foamed molding machine is mainly used for the compression moulding of foamed material, often uses the mode of heating plasticizing.It is existing it is foamed into Type machine includes organic frame and the feeding mechanism and shaping mechanism that are installed in rack, which, which includes, is installed on rack On fixed form, moving die plate and for drive moving die plate towards fixed form compress or separate hydraulic cylinder.Mobile mould Plate and fixed form molding after, a die cavity will be formed between the two, by feeding mechanism in die cavity filling foamed plastics, so Make feed particles expansion molding in die cavity using high-temperature steam afterwards.It needs to carry out demoulding blanking after molding.Due to product be It is prepared in the environment of high-temperature steam, therefore the temperature of product is very high, is not easy to manually carry out blanking, and due to temperature Higher and product is the reason of expansion, is contacted between product and mold closely, the stripping operation of product is not easy to.Institute With, before the demoulding and blanking of product, be typically necessary and cool down product, but in order to avoid cooling temperature it is too low it Afterwards, it carries out also needing to carry out long-time preheating to mold during the production of product next time, so temperature after cooling generally will It is maintained at 70 degrees Celsius or more.

Traditional cooling means is the same cooling water in die cavity, such operation frequently can lead to cooling time long, shadow Ring production efficiency.And cooled down by cooling water, although improving cooling efficiency, a large amount of water can be remained on product Point, the moisture content for leading to product is excessively high, needs subsequently carrying out dewatering work, increases production process, extend the production cycle, Reduce production efficiency.

Invention content

For overcome the deficiencies in the prior art, the present invention provides one kind to be arranged moisture in die cavity rapidly by negative pressure Go out, product surface moisture is greatly reduced, while also be compliant with modernization construction, the band drainage by suction with effects of energy saving and emission reduction The foamed molding machine of system.

Foamed molding machine with drainage by suction system.

The technical solution adopted by the present invention to solve the technical problems is:A kind of foamed molding with drainage by suction system Machine including rack, is equipped with feeding mechanism and shaping mechanism in rack, the shaping mechanism include being installed on rack mold and Steam boiler, the mold include cover half, dynamic model and the die cavity between fixed half and moving half, and the drainage by suction system is also wrapped It has included:

Vacuum air pump;

The cover half cooling chamber being opened on cover half, which is disposed adjacent with die cavity, and is opened in cover half cooling chamber Equipped with cover half water inlet and cover half water outlet;

The dynamic model cooling chamber being opened on dynamic model, which is disposed adjacent with die cavity, and is opened in dynamic model cooling chamber Equipped with dynamic model water inlet and dynamic model water outlet;

The steam inlet and steam (vapor) outlet for being opened on mold and being connected with die cavity;

Vacuum tank, offer on the vacuum tank tank steam inlet being connected with steam (vapor) outlet, with vacuum air pump air inlet Tank vacuum gas port that mouth is connected, with the tank atmospheric air port of atmosphere, the tank discharge outlet positioned at vacuum tank lower position;

Spray tube is extended to inside vacuum tank, and spray tube is equipped with several spray apertures, which is located in vacuum tank;

Steam inlet control valve is equipped at tank steam inlet, vacuum gas port control valve, tank air are equipped at tank vacuum gas port Atmospheric air port control valve is equipped at mouthful, discharge outlet control valve is equipped at tank discharge outlet, passes through pipe between tank steam inlet and steam (vapor) outlet Road connects;Steam inlet control valve is equipped at tank steam inlet;The steam boiler gas outlet is connected with steam inlet;It is described It is connected inside vacuum air pump gas outlet and steam boiler.

The beneficial effects of the invention are as follows:Step 1) is when being full of foamed plastics in die cavity, dynamic model cooling chamber and cover half cooling Indoor holding anhydrous state opens steam inlet control valve, is injected into steam in die cavity from steam inlet by steam boiler And 3~7s of pressurize;Step 2) steam off inlet control valve is passed through cooling water into cover half cooling chamber and dynamic model cooling chamber, until Stop being passed through cooling water when mould cavity temperature is down to 88~90 DEG C;Liquid level is filled in step 3) vacuum tank higher than tank steam inlet Cooling water, remain off steam inlet control valve, discharge outlet control valve and atmospheric air port control valve, open vacuum gas port Control valve is simultaneously passed through cooling water into spray tube, while die cavity internal pressure power is made to be maintained at -40~60 kPas by vacuum air pump, Continue 5~7s;Step 4) closes vacuum gas port control valve, the first control valve, the second control valve and steam inlet control valve, opens Discharge outlet control valve and atmospheric air port control valve discharge the cooling water gathered in vacuum tank.Made in die cavity by vacuum air pump In negative pressure state, when negative pressure is -40~60 kPas, the boiling point of liquid water will drop to 76~86 DEG C or so, at this time in die cavity The temperature of liquid water is typically in 90 DEG C or so, this operative liquid water translates into steam and is inhaled into vacuum tank.Into true Steam in slack tank can pass through the cooling water of vacuum pot bottom first, so as to which a part of steam cooling be made to liquefy;After cooling water Still there is some vapor rising, the overwhelming majority all liquefies cooling after then being sprayed via spray tube, on a small quantity by vacuum air pump Draw vacuum tank.Wherein, volume will significantly reduce during steam liquefied, so as to further reduce the vacuum in vacuum tank Degree, improves the vacuumizing effect to die cavity, also reduces the power of vacuum air pump accordingly, and the vacuum effectiveness in vacuum tank It is more preferable instead.By above-mentioned flow, the moisture of product surface has fallen to extremely low level in die cavity, and moisture content is 1~3% In the range of, and whole work process only needs 16~22s can be completed.The steam of vacuum air pump extraction will also pass through steam copper In stove, so as to supplement raw material for it in the case where not influencing steam boiler temperature.And can by multiple negative pressure state and often The switching of temperature state so that product completes demoulding due to pressure acts in die cavity, improves demoulding efficiency.In addition, product is cooling down To after 88~90 DEG C, it is not only convenient for operator and blanking is carried out to product, but also can ensure the waste heat temperature of fixed half and moving half Degree, reduces the waste heat time between the two, has saved energy consumption.The present invention can particularly comply with national call, follow energy-saving and emission-reduction closely Principles and policies, the sustainable development cause for government make own share contribution.

Wherein, tank steam inlet is located at the lower position of vacuum tank.Liquid level is filled in vacuum tank higher than tank steam inlet Cooling water, the steam entered by tank steam inlet will go over cooling water, so as to improve the liquefaction efficiency of steam.

In order to improve cooling effect of the spray tube to steam, spray tube includes spray water inlet and spray water outlet, should Spray tube is set through vacuum tank, and the spray water inlet and spray water outlet of spray tube are located at outside vacuum tank respectively, and spray apertures are then In vacuum tank.And endlessly cooling water, so as to spray tube water inlet to spray tube water outlet so that spray tube is not Only play the role of spray, moreover it is possible to carry out heat absorption function by spraying tube wall, cool down for steam in vacuum tank.

In order to improve the accuracy of operation and intelligence, spray tube water inlet and spray tube water outlet are separately installed with One control valve and the second control valve;The drainage by suction system, which further includes, is useful for control steam inlet control valve, vacuum gas port Control valve, atmospheric air port control valve, discharge outlet control valve, the first control valve and the second control valve PLC control unit.

In order to save installation control, extend a three-way pipe on vacuum tank, the opening of the three-way pipe wherein one and vacuum tank phase Connection, in addition two nozzles are respectively tank vacuum pumping opening and tank atmospheric air port.

For the purposes of saving installation control, steam inlet and steam (vapor) outlet are same opening.

Vacuum tank bottom coohng water passes through the water of crossing of steam, and the temperature of cooling water will also rise, then tank discharge outlet and steam Boiler internal is connected, and the cooling water after thus will heat up is imported in steam boiler, not only reduces outer row, and reduce to new The heating of water in steam boiler is added in, saves energy consumption.

For overcome the deficiencies in the prior art, the present invention provides one kind to be arranged moisture in die cavity rapidly by negative pressure Go out, product surface moisture is greatly reduced, while also be compliant with modernization construction, the drainage by suction work with effects of energy saving and emission reduction Skill.

The invention also discloses a kind of drainage by suction techniques, include following steps:

Step 1) keeps anhydrous state, beats when being full of foamed plastics in die cavity in dynamic model cooling chamber and cover half cooling chamber Steam inlet control valve is opened, steam is injected into die cavity by simultaneously 3~7s of pressurize from steam inlet by steam boiler;

Step 2) steam off inlet control valve is passed through cooling water, until die cavity into cover half cooling chamber and dynamic model cooling chamber Stop being passed through cooling water when interior temperature is down to 88~90 DEG C;

The cooling water that liquid level is higher than tank steam inlet is filled in step 3) vacuum tank, makes steam inlet control valve, draining Mouth control valve and atmospheric air port control valve remain off, and open vacuum gas port control valve and cooling water is simultaneously passed through into spray tube, Die cavity internal pressure power is made to be maintained at -40~60 kPas by vacuum air pump simultaneously, continue 5~7s;

Step 4) closes vacuum gas port control valve, the first control valve, the second control valve and steam inlet control valve, the row of opening Mouth of a river control valve and atmospheric air port control valve discharge the cooling water gathered in vacuum tank.

The invention has the advantages that can discharge moisture in die cavity rapidly by negative pressure, product surface is greatly reduced Moisture, while modernization construction also is compliant with, there is effects of energy saving and emission reduction.

Wherein, the number 2~3 times of step 3) and step 4) is repeated.

Description of the drawings

Fig. 1 is the structure diagram of mold of the embodiment of the present invention.

Fig. 2 is the structure diagram of drainage by suction system of the embodiment of the present invention, and vacuum air pump is omitted.

Specific embodiment

The invention will be further described below in conjunction with the accompanying drawings:

As shown in Figure 1, 2, the present embodiment includes rack (not shown), be equipped in rack feeding mechanism (not shown) and into Type mechanism, shaping mechanism include being installed on rack mold, steam boiler (not shown) and drainage by suction system, which wraps Include cover half 11, dynamic model 12 and the die cavity 13 between cover half 11 and dynamic model 12.Drainage by suction system 2 has further included vacuum pumping Mechanism of qi (not shown) offers cover half cooling chamber 21 on cover half 11, which is disposed adjacent, and cover half with die cavity 13 Cover half water inlet 211 and cover half water outlet 212 are offered in cooling chamber 21;Dynamic model cooling chamber 22 is offered on dynamic model 12, this is dynamic Mould cooling chamber 22 is disposed adjacent with die cavity 13, and dynamic model water inlet 221 and dynamic model water outlet are offered in dynamic model cooling chamber 22 222;The steam inlet 141 being connected with die cavity 13 and steam (vapor) outlet 142 are offered on mold 1;Vacuum tank is provided in rack 23, offer on the vacuum tank 23 the tank steam inlet 231 being connected with steam (vapor) outlet 142, with vacuum air pump air inlet phase The tank atmospheric air port 233 of the tank vacuum gas port 232 of connection and atmosphere, the tank discharge outlet positioned at 23 lower position of vacuum tank 234;23 top of vacuum tank is equipped with the spray tube 24 with spray apertures 243, which includes spray water inlet 241 and spray Water outlet 242 is drenched, spray water inlet 241 and spray water outlet 242 are located at outside vacuum tank 23 respectively, and spray apertures 243 are then located at true In slack tank 23;Steam inlet control valve is equipped at tank steam inlet 231, vacuum gas port control valve is equipped at tank vacuum gas port 232, Atmospheric air port control valve is equipped at tank atmospheric air port 233, discharge outlet control valve, tank steam inlet 231 and steaming are equipped at tank discharge outlet 234 Pass through pipeline connection between vapor outlet 142;Steam inlet control valve is equipped at tank steam inlet 231;Steam boiler gas outlet is with steaming Vapor inlet 141 is connected;It is connected inside vacuum air pump gas outlet and steam boiler;In tank discharge outlet 234 and steam boiler Portion is connected.Wherein, tank steam inlet 231 is located at the lower position of vacuum tank 23.Liquid level is filled in vacuum tank 23 higher than tank The cooling water of steam inlet 231, the steam entered by tank steam inlet 231 will go over cooling water, so as to improve steam Liquefaction efficiency.In order to improve the accuracy of operation and intelligence, distinguish at spray tube water inlet 241 and spray tube water outlet 242 First control valve and the second control valve are installed;Drainage by suction system 2, which further includes, is useful for control steam inlet control valve, vacuum Gas port control valve, atmospheric air port control valve, discharge outlet control valve, the first control valve and the second control valve PLC control unit, should PLC control unit model siemens PLC.In addition, in order to save installation control, extend a three-way pipe on vacuum tank 23, The opening of the three-way pipe wherein one is connected with vacuum tank 23, and in addition two nozzles are respectively tank vacuum pumping opening 232 and tank atmospheric air port 233.As on mold 1, steam inlet 141 and steam (vapor) outlet 142 can be same opening.

The drainage by suction technique of the present invention, includes following steps:Step 1) is moved when being full of foamed plastics in die cavity 13 Anhydrous state is kept in mould cooling chamber 22 and cover half cooling chamber 21, opens steam inlet control valve, by steam boiler by steam Simultaneously 3~7s of pressurize is injected into die cavity 13 from steam inlet 141;Step 2) steam off inlet control valve, to cover half cooling chamber 21 and dynamic model cooling chamber 22 in be passed through cooling water, until temperature stops when being down to 88~90 DEG C being passed through cooling water in die cavity 13;Step 3) cooling water that liquid level is higher than tank steam inlet 231 is filled in vacuum tank 23, makes steam inlet control valve, discharge outlet control valve It is remained off with atmospheric air port control valve, open vacuum gas port control valve and cooling water is passed through into spray tube 24, led to simultaneously Crossing vacuum air pump makes 13 internal pressure power of die cavity be maintained at -40~60 kPas, continues 5~7s;Step 4) closes the control of vacuum gas port Valve, the first control valve, the second control valve and steam inlet control valve open discharge outlet control valve and atmospheric air port control valve, will be true The cooling water discharge gathered in slack tank 23.Wherein, step 3) and step 4) can repeat 2~3 times.

In the present invention, the cooling water of 23 bottom of vacuum tank can be passed through first into the steam in vacuum tank 23, so as to make one Some vapor cooling liquefaction;Still there is some vapor rising after cooling water, then via the overwhelming majority after the spray of spray tube 24 all Cooling is liquefied, draws vacuum tank 23 by vacuum air pump on a small quantity.Wherein, volume will significantly contract during steam liquefied It is small, so as to further reduce the vacuum degree in vacuum tank 23, the vacuumizing effect to die cavity 13 is improved, is also reduced accordingly true The power of empty air exhauster, and the vacuum effectiveness in vacuum tank 23 is more preferable instead.By above-mentioned flow, product surface in die cavity 13 Moisture has fallen to extremely low level, and moisture content is in the range of 1~3%, and whole work process only needs 16~22s It completes.The steam of vacuum air pump extraction will also be by steam boiler, so as in the case where not influencing steam boiler temperature Raw material is supplemented for it.And the switching of multiple negative pressure state and normal temperature state can be passed through so that product is because of pressure work in die cavity 13 With and complete demoulding, improve demoulding efficiency.In addition, product after being cooled to 88~90 DEG C, is not only convenient for operator to product Blanking is carried out, but also can ensure the waste heat supply temperature of cover half 11 and dynamic model 12, the waste heat time between the two is reduced, has saved energy Consumption.The present embodiment can particularly comply with national call, follow the principles and policies of energy-saving and emission-reduction closely, be the sustainable development cause of government Make own share contribution.

Claims (10)

1. a kind of drainage by suction system including vacuum tank, offers tank steam inlet and vacuum air pump air inlet on the vacuum tank Tank vacuum gas port that mouth is connected, with the tank atmospheric air port of atmosphere, the tank discharge outlet positioned at vacuum tank lower position;
Spray tube is extended to inside vacuum tank, and spray tube is equipped with several spray apertures, which is located in vacuum tank;
Steam inlet control valve is equipped at tank steam inlet, is equipped with vacuum gas port control valve at tank vacuum gas port, at tank atmospheric air port Equipped with atmospheric air port control valve, discharge outlet control valve is equipped at tank discharge outlet.
2. drainage by suction system according to claim 1, it is characterized in that:The spray tube includes spray water inlet and spray Water outlet is drenched, which is set through the vacuum tank, and the spray water inlet and spray water outlet of spray tube are respectively positioned at true Outside slack tank, spray apertures are then located in vacuum tank.
3. drainage by suction system according to claim 1 or 2, it is characterized in that:The spray tube water inlet and spray tube go out The first control valve and the second control valve are separately installed at the mouth of a river;The drainage by suction system further include be useful for control steam into Mouthful control valve, vacuum gas port control valve, atmospheric air port control valve, discharge outlet control valve, the first control valve and the second control valve PLC Control unit.
4. drainage by suction system according to claim 1, it is characterized in that:Extend a three-way pipe on the vacuum tank, it should The opening of three-way pipe wherein one is connected with vacuum tank, and in addition two nozzles are respectively tank vacuum gas port and tank atmospheric air port.
5. a kind of molding machine, it is characterized in that, including the drainage by suction system described in claim 1-4 any one.
6. molding machine according to claim 5, it is characterized in that, the molding machine further comprises rack, in the rack Feeding mechanism and shaping mechanism are installed, the shaping mechanism includes being installed on rack mold and steam boiler, the mold packet Include cover half, dynamic model and the die cavity between fixed half and moving half.
7. molding machine according to claim 6, it is characterized in that, the drainage by suction system further includes:It is opened on cover half Cover half cooling chamber, which is disposed adjacent with die cavity, and cover half water inlet and cover half are offered in cover half cooling chamber Water outlet;
The dynamic model cooling chamber being opened on dynamic model, which is disposed adjacent with die cavity, and is offered in dynamic model cooling chamber Dynamic model water inlet and dynamic model water outlet;
The steam inlet and steam (vapor) outlet for being opened on mold and being connected with die cavity;
Pass through pipeline connection between the tank steam inlet and steam (vapor) outlet;Steam inlet control valve is equipped at tank steam inlet;Institute Steam boiler gas outlet is stated with steam inlet to be connected;It is connected inside the vacuum air pump gas outlet and steam boiler;Institute It states and is connected inside tank discharge outlet and steam boiler.
8. molding machine according to claim 7, it is characterized in that, the steam inlet and steam (vapor) outlet are same opening.
9. a kind of drainage by suction technique of molding machine, it is characterized in that, include following steps:
Step (1) keeps anhydrous state when being full of foamed plastics in die cavity in dynamic model cooling chamber and cover half cooling chamber, open and steam Steam is injected into die cavity simultaneously 3~7s of pressurize by vapor inlet control valve by steam boiler from steam inlet;
Step (2) steam off inlet control valve, cooling water is passed through into cover half cooling chamber and dynamic model cooling chamber, until warm in die cavity Stop being passed through cooling water when degree is down to 88~90 DEG C;
The cooling water that liquid level is higher than tank steam inlet is filled in step (3) vacuum tank, makes steam inlet control valve, discharge outlet control Valve and atmospheric air port control valve processed remains off, and opens vacuum gas port control valve and cooling water is passed through into spray tube, simultaneously Die cavity internal pressure power is made to be maintained at -40~60 kPas by vacuum air pump, continue 5~7s;
Step (4) closes vacuum gas port control valve, the first control valve, the second control valve and steam inlet control valve, opens draining Mouth control valve and atmospheric air port control valve discharge the cooling water gathered in vacuum tank.
10. the drainage by suction technique of molding machine according to claim 9, it is characterized in that:Repeat step (3) and step (3) Number 2~3 times.
CN201810006223.7A 2015-10-29 2015-10-29 The drainage by suction technique of drainage by suction system, molding machine and molding machine CN108237658A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810006223.7A CN108237658A (en) 2015-10-29 2015-10-29 The drainage by suction technique of drainage by suction system, molding machine and molding machine
CN201510717342.XA CN105252695B (en) 2015-10-29 2015-10-29 Foamed forming machine with drainage by suction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810006223.7A CN108237658A (en) 2015-10-29 2015-10-29 The drainage by suction technique of drainage by suction system, molding machine and molding machine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201510717342.XA Division CN105252695B (en) 2015-10-29 2015-10-29 Foamed forming machine with drainage by suction system

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CN108237658A true CN108237658A (en) 2018-07-03

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CN201810006223.7A CN108237658A (en) 2015-10-29 2015-10-29 The drainage by suction technique of drainage by suction system, molding machine and molding machine

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CN105252695B (en) 2018-05-25

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