CN201530049U - Sand mulling auger used for resin self-hardening sand equipment - Google Patents
Sand mulling auger used for resin self-hardening sand equipment Download PDFInfo
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- CN201530049U CN201530049U CN2009202404095U CN200920240409U CN201530049U CN 201530049 U CN201530049 U CN 201530049U CN 2009202404095 U CN2009202404095 U CN 2009202404095U CN 200920240409 U CN200920240409 U CN 200920240409U CN 201530049 U CN201530049 U CN 201530049U
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- mulling
- groove drum
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Abstract
The utility model discloses a sand mulling auger used for resin self-hardening sand equipment, which includes a sand mulling groove drum and an auger shaft arranged in the sand mulling groove drum; a sand inlet, a curing agent injection port and/or a resin injection port are arranged at one end of the sand mulling groove drum, and a moulding sand outlet is arranged at the other end; and the auger is characterized in that a curing agent nozzle is arranged at a curing agent nozzle is arranged at the curing agent injection port and is connected with a curing agent pump through a curing agent injection port supply pipeline, and a resin nozzle is arranged at the resin injection port and is connected with a resin pump through a resin supply pipeline. Compared with the prior art, the utility model adopts the technical manner of normal nozzle for introducing a mouth piece, performs liquid injection in a spraying manner, facilitates larger range contact between injected liquids and sand material in running, shortens the time required by even mixing, efficiently reduces the consumption of liquid, and facilitates production efficiency improvement and production cost reduction.
Description
Technical field
The utility model relates to the resin self-setting sand equipment in the foundry machinery, and is special relevant with the mulling screw feeder part in the resin self-setting sand equipment.
Background technology
The basic function of resin self-setting sand equipment is to become molding sand stirring as the liquid resin of binding agent with as the LCM of reaction promoter and sand material as aggregate at short notice in the prior art, and direct filling sandbox of molding sand or flask are carried out molding and core making.Difference according to the mulling mode can be divided into sand blender continuous muller and batch (-type) puddle mixer.For example wherein a kind of fixedly swinging flow mixer, mulling is finished in a horizontal mulling screw feeder; The mulling screw feeder comprises mulling groove drum and the screw conveyor shaft that is positioned at the mulling groove drum, one end of mulling groove drum is provided with sand inlet, curing agent inlet and resin inlet, the other end is provided with molding sand (compound) outlet, screw conveyor shaft is provided with the blade (or continuously arranged blade) of interrupted arrangement, flat blade and axis are angled, are equivalent to form a multi-head spiral.Above-mentioned curing agent inlet is provided with curing agent and imports tube head, and the resin inlet is provided with resin and imports tube head, and curing agent imports tube head and inserts catalyst pump by curing agent feed flow pipeline, and resin imports tube head and inserts the resin pump by resin feed flow pipeline; When the sand amount of anticipating flows in the mulling groove drum and passes through from sand inlet, at first inject curing agent to the sand material of advancing, further mix through the advance resin that reinjects after making that sand and curing agent are preliminary and mixing of a segment distance, the sand material and the resin that are stained with curing agent are pushed ahead in by blade cuts, stirring, afterturn process in the mulling groove drum simultaneously, and molding sand (compound) is discharged continuously from the molding sand outlet.The resin sand puddle mixer is in the mulling process in the above-mentioned prior art, because being tubes, resin, curing agent directly be close to mulling groove drum wall inflow mulling groove drum for several millimeters transfusion tube head, therefore in production practices, find to have following defective: in the mulling process, because it is less that the liquid material enters the pressure and the area coverage of mulling groove drum, it is less that sand grains and liquid material contact ratio, just flow through by a small amount of sand grains and accept liquid when the liquid inlet is located, these sand grains form molding sand with other sand grains through rotating stirring at a high speed gradually; Owing to the grains of sand proportion of invading liquid is less, therefore to expect comparatively ideal molding sand, have only use amount, delay mulling time, and the rotating speed of raising screw conveyor shaft is finished by increasing resin and curing agent; If rotating speed is too high, has also just increased the sand grains percentage of damage and strengthened the wearing and tearing of parts and the too high consumption of electric energy.The mulling mode of above-mentioned existing mulling screw feeder is through practical proof, and it is poor to exist the molding sand mixing quality, and resin and curing agent use amount are big, and the sand grains fragmentation is many, and power consumption crosses high defective, therefore requires further improvement.
The utility model content
The utility model is to solve the existing technological deficiency of mulling screw feeder fluid injection mode of puddle mixer in the prior art, and a kind of resin self-setting sand equipment mulling screw feeder is provided.
Its technical solution is:
A kind of resin self-setting sand equipment mulling screw feeder comprises mulling groove drum and the screw conveyor shaft that is positioned at the mulling groove drum, and an end of mulling groove drum is provided with sand inlet, curing agent inlet and/or resin inlet, and the other end is provided with the molding sand outlet; Above-mentioned curing agent inlet place is provided with the curing agent nozzle, and the curing agent nozzle inserts catalyst pump by curing agent feed flow pipeline, and above-mentioned resin inlet place is provided with resin ejection nozzle, and resin ejection nozzle inserts the resin pump by resin feed flow pipeline.
Above-mentioned curing agent nozzle is arranged on the piston rod of curing agent nozzle cylinder, curing agent nozzle cylinder is fixedly connected or detachable the connection with the corresponding site of mulling groove drum by the fixed mount on the cylinder body, and the curing agent nozzle can insert the curing agent inlet and deviate from from the curing agent inlet; Above-mentioned resin ejection nozzle is arranged on the piston rod of resin ejection nozzle cylinder, and the resin ejection nozzle cylinder is fixedly connected or detachable the connection with the corresponding site of mulling groove drum by the fixed mount on the cylinder body, and resin ejection nozzle can insert the resin inlet and deviate from from the resin inlet.
Above-mentioned curing agent nozzle is fixedly connected on the frame of mulling screw feeder by the curing agent nozzle holder, and the curing agent nozzle stretches into curing agent inlet place, and the position of curing agent nozzle remains unchanged; Above-mentioned resin ejection nozzle is fixedly connected on the frame of mulling screw feeder by the resin ejection nozzle support, and resin ejection nozzle stretches into resin inlet place, and the position of resin ejection nozzle remains unchanged.
Above-mentioned curing agent inlet is arranged on the top barrel of mulling groove drum, and above-mentioned resin inlet is arranged on the top barrel of mulling groove drum.
Above-mentioned mulling groove drum comprises left half groove drum and right half groove drum, the curing agent inlet when half groove drum combines with right half groove drum on a left side by the right side half shape mouth of a left side half shape mouth of the curing agent inlet that is positioned at left half groove drum and the curing agent inlet that is positioned at right half groove drum butt joint form; Equally, the resin inlet when half groove drum combines with right half groove drum on a left side by the right side half shape mouth of a left side half shape mouth of the resin inlet that is positioned at left half groove drum and the resin inlet that is positioned at right half groove drum butt joint form.
Above-mentioned curing agent feed flow pipeline is provided with the first liquid material control valve, and the curing agent nozzle inserts air compression plant by the first liquid material control valve and compressed air conveying pipeline simultaneously; Above-mentioned resin feed flow pipeline is provided with the second liquid material control valve, and resin ejection nozzle inserts air compression plant by the second liquid material control valve and compressed air conveying pipeline simultaneously.
The above-mentioned first liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of curing agent feed flow pipeline, and compressed air arrival curing agent nozzle will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum; The above-mentioned second liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of resin feed flow pipeline, and compressed air arrival resin ejection nozzle will be detained the surplus liquid of resin and all be blown into the mulling groove drum.
The above-mentioned first liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of curing agent feed flow pipeline, and compressed air arrival curing agent nozzle will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum; When starting resin feed flow pipeline, opens the above-mentioned second liquid material control valve compressed air conveying pipeline, resin mixes from resin ejection nozzle with compressed air and sprays into the mulling groove drum, after the second liquid material control valve is closed resin feed flow pipeline, time-delay a period of time closes compression air delivery pipe road makes compressed air continuation arrival resin ejection nozzle will be detained the surplus liquid of resin and all is blown into the mulling groove drum.
The useful technique effect that the utility model can possess is:
1, by being provided with nozzle at curing agent inlet and/or resin inlet place, take the importing tube head technical approach of the conventional mouth of pipe than prior art, can inject to carry out liquid such as spray patterns such as fan-shaped, taper, circle or liquid beams, impel and inject the liquid and medium sand material maintenance the contacting in a big way of advancing, reaching the time that mixes can effectively shorten, the consumption of liquid also can effectively be reduced, and helps enhancing productivity and reducing production costs.Handle the sand material of identical weight unit and can save liquid about 15%, production efficiency also can improve more than 10.
2, each nozzle is arranged on the piston rod of this nozzle cylinder, drives nozzle by cylinder and insert its corresponding inlet, and from this inlet, deviate from.Such as: in the time need safeguarding to the inside of mulling groove drum, can utilize the cylinder corresponding actions, drive nozzle by its piston rod and from its inlet, deviate from, and cylinder can be disassembled down from the mulling groove drum, be convenient to open the operations relevant such as mulling groove drum with maintenance; Maintenance finishes, and cylinder can be connected and fixed on the mulling groove drum, utilizes the cylinder corresponding actions, drives nozzle by its piston rod and inserts in its inlet, so that the sand material in advancing in the mulling groove drum in the mode of spraying injects liquid.
3, above-mentioned curing agent nozzle and resin ejection nozzle are furnished with first respectively, the second liquid material control valve, corresponding by disposing as the control system of PLC is set, can control each liquid material control valve accurately and make control action, such as opening compressed air conveying pipeline in the very first time of closing curing agent feed flow pipeline at the first liquid material control valve, compressed air arrival curing agent nozzle will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum, in the pneumatic resin feed flow of second liquid material control valve pipeline, open compressed air conveying pipeline, resin mixes from resin ejection nozzle with compressed air and sprays into the mulling groove drum, after the second liquid material control valve is closed resin feed flow pipeline, time-delay a period of time closes compression air delivery pipe road makes compressed air continuation arrival resin ejection nozzle will be detained the surplus liquid of resin and all is blown into the mulling groove drum.The one, in the time of can preventing that puddle mixer from quitting work, the raffinate material produces the drip phenomenon in curing agent nozzle and the resin ejection nozzle; The 2nd, because the resin viscosity is big, become fog effect unsatisfactory, spray this technical approach by taking compressed air to mix simultaneously from resin ejection nozzle with resin liquid, can access the vaporific effect of good conformity.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing and the specific embodiment:
Fig. 1 is the structural principle schematic diagram of a kind of embodiment of the utility model.
Fig. 2 is a route of pipe line catenation principle schematic diagram relevant with each nozzle in the utility model.
Fig. 3 is the A-A sectional structure principle schematic of Fig. 1.
The specific embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of resin self-setting sand equipment mulling screw feeder, comprise mulling groove drum 1 and the screw conveyor shaft 2 that is positioned at the mulling groove drum, an end of mulling groove drum is provided with sand inlet, curing agent inlet and resin inlet, and the other end is provided with molding sand outlet 3.The innovation part of the utility model in following technology contents, existing techniques in realizing can be taked or use for reference to parts such as other relevant technologies compositions or formation all.
Above-mentioned mulling groove drum 1 comprises left half groove drum 101 and right half groove drum 102, and above-mentioned curing agent inlet is arranged on the top barrel of mulling groove drum 1, and above-mentioned resin inlet is arranged on the top barrel of mulling groove drum; The curing agent inlet can be realized like this, butt joint formed when promptly half groove drum combined with right half groove drum on a left side by the right side half shape mouth of a left side half shape mouth of the curing agent inlet that is positioned at left half groove drum 101 and the curing agent inlet that is positioned at right half groove drum 102, same resin inlet is also taked identical frame mode, is promptly docked when half groove drum combines with right half groove drum on a left side with the right side half shape mouth of the resin inlet that is positioned at right half groove drum by a left side half shape mouth of the resin inlet that is positioned at left half groove drum to form.Curing agent nozzle 4 is fixedly connected on the frame of mulling screw feeder by the curing agent nozzle holder, and curing agent nozzle 4 stretches into curing agent inlet place, and the position of curing agent nozzle remains unchanged; Curing agent nozzle 4 inserts catalyst pump 6 by curing agent feed flow pipeline 11, curing agent feed flow pipeline is provided with the first liquid material control valve 7, curing agent nozzle 4 inserts an air compression plant by the first liquid material control valve and compressed air conveying pipeline 8 simultaneously, open compressed air conveying pipeline in the first liquid material control valve is closed very first time of curing agent feed flow pipeline, compressed air arrives the curing agent nozzle and will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum; Resin ejection nozzle 5 is fixedly connected on the frame of mulling screw feeder by the resin ejection nozzle support, and resin ejection nozzle 5 stretches into resin inlet place, and the position of resin ejection nozzle 5 remains unchanged; Resin ejection nozzle 5 inserts resin pump 9 by resin feed flow pipeline, resin feed flow pipeline is provided with the second liquid material control valve 10, resin ejection nozzle 5 inserts same air compression plant by the second liquid material control valve 10 and compressed air conveying pipeline 8 simultaneously, in the pneumatic resin feed flow of second liquid material control valve pipeline, open compressed air conveying pipeline, resin mixes from resin ejection nozzle with compressed air and sprays into the mulling groove drum, after the second liquid material control valve is closed resin feed flow pipeline, time-delay a period of time closes compression air delivery pipe road makes compressed air continuation arrival resin ejection nozzle will be detained the surplus liquid of resin and all is blown into the mulling groove drum; What associate easily is that above-mentioned air compression plant also can independently be provided with, and promptly selects two air compression plants for use.Above-mentioned curing agent nozzle 7 can be selected from quality such as the stainless steel corrosion resistant nozzle product of other technologies field commercially available in the prior art in uses such as liquid spraying (spraying) occasions with resin ejection nozzle 8.
About opening with the design of docking closed aspect of mulling groove drum can be taked opening of mulling groove drum in the prior art fully and be docked the closure techniques mode.When left and right half groove drum of mulling groove drum was opened, each nozzle remained unchanged in situ, and after the left and right half groove drum butt joint of mulling groove drum, each nozzle still is positioned at each self-corresponding inlet place.
Embodiment 2
In conjunction with consulting above-mentioned accompanying drawing counterpart, a kind of resin self-setting sand equipment mulling screw feeder, comprise mulling groove drum and the screw conveyor shaft that is positioned at the mulling groove drum, an end of mulling groove drum is provided with sand inlet, curing agent inlet and resin inlet, and the other end is provided with the molding sand outlet.The difference of the utility model in following technology contents, parts such as other relevant technologies compositions or formation are all identical with embodiment 1 counterpart.
Above-mentioned curing agent inlet is arranged on the top barrel of mulling groove drum, and above-mentioned resin inlet is arranged on the top barrel of mulling groove drum.The curing agent nozzle is arranged on the piston rod of curing agent nozzle cylinder, curing agent nozzle cylinder connects with the corresponding site of mulling groove drum is detachable by the fixed mount on the cylinder body, and the curing agent nozzle can insert the curing agent inlet and deviate from from the curing agent inlet under the drive of curing agent nozzle cylinder.Above-mentioned resin ejection nozzle is arranged on the piston rod of resin ejection nozzle cylinder, the resin ejection nozzle cylinder connects with the corresponding site of mulling groove drum is detachable by the fixed mount on the cylinder body, and resin ejection nozzle can insert the resin inlet and deviate from from the resin inlet under the drive of resin ejection nozzle cylinder.The curing agent nozzle inserts catalyst pump by curing agent feed flow pipeline, curing agent feed flow pipeline is provided with the first liquid material control valve, the curing agent nozzle inserts an air compression plant by the first liquid material control valve and compressed air conveying pipeline simultaneously, open compressed air conveying pipeline in the first liquid material control valve is closed very first time of curing agent feed flow pipeline, compressed air arrives the curing agent nozzle and will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum; Resin ejection nozzle inserts the resin pump by resin feed flow pipeline, resin feed flow pipeline is provided with the second liquid material control valve, resin ejection nozzle inserts another air compression plant by the second liquid material control valve and compressed air conveying pipeline simultaneously, the above-mentioned second liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of resin feed flow pipeline, and compressed air arrival resin ejection nozzle will be detained the surplus liquid of resin and all be blown into the mulling groove drum.Resin ejection nozzle can be selected from the corrosion-resistant nozzle product of other technologies field commercially available in the prior art in the quality such as stainless steel of uses such as liquid spraying (spraying) occasion.
Embodiment 3
In conjunction with consulting above-mentioned accompanying drawing and the foregoing description counterpart, a kind of resin self-setting sand equipment mulling screw feeder, comprise the mulling groove drum and be positioned at the screw conveyor shaft of mulling groove drum, an end of mulling groove drum is provided with sand inlet, curing agent inlet, and the other end is provided with the first half sand and exports.The difference of the utility model in following technology contents, parts such as other relevant technologies compositions or formation are all identical with embodiment 1 counterpart.
Above-mentioned curing agent inlet is arranged on the top barrel of mulling groove drum, and curing agent inlet place is provided with the curing agent nozzle.
Embodiment 4
In conjunction with consulting above-mentioned accompanying drawing and the foregoing description counterpart, a kind of resin self-setting sand equipment mulling screw feeder, comprise the mulling groove drum and be positioned at the screw conveyor shaft of mulling groove drum, an end of mulling groove drum is provided with sand inlet, resin inlet, and the other end is provided with the second half sand and exports.The difference of the utility model in following technology contents, parts such as other relevant technologies compositions or formation are all identical with embodiment 1 counterpart.
Above-mentioned resin inlet is arranged on the top barrel of mulling groove drum, and resin inlet place is provided with resin ejection nozzle.
The foregoing description 3 can be united with embodiment 4 and is used for the continuous puddle mixer of two sand three mixed connections.
Under the instruction of above-mentioned specification, the utility model also has multiple conspicuous variation pattern, and such as need not the increasing of creative work, minimizing and replacement etc., these technical approach also should fall into the protection domain of the utility model claims.
Claims (8)
1. a resin self-setting sand equipment mulling screw feeder comprises mulling groove drum and the screw conveyor shaft that is positioned at the mulling groove drum, and an end of mulling groove drum is provided with sand inlet, curing agent inlet and/or resin inlet, and the other end is provided with the molding sand outlet; It is characterized in that: described curing agent inlet place is provided with the curing agent nozzle, and the curing agent nozzle inserts catalyst pump by curing agent feed flow pipeline, and described resin inlet place is provided with resin ejection nozzle, and resin ejection nozzle inserts the resin pump by resin feed flow pipeline.
2. resin self-setting sand equipment mulling screw feeder according to claim 1, it is characterized in that: described curing agent nozzle is arranged on the piston rod of curing agent nozzle cylinder, curing agent nozzle cylinder is fixedly connected or detachable the connection with the corresponding site of mulling groove drum by the fixed mount on the cylinder body, and the curing agent nozzle can insert the curing agent inlet and deviate from from the curing agent inlet; Described resin ejection nozzle is arranged on the piston rod of resin ejection nozzle cylinder, and the resin ejection nozzle cylinder is fixedly connected or detachable the connection with the corresponding site of mulling groove drum by the fixed mount on the cylinder body, and resin ejection nozzle can insert the resin inlet and deviate from from the resin inlet.
3. resin self-setting sand equipment mulling screw feeder according to claim 1, it is characterized in that: described curing agent nozzle is fixedly connected on the frame of mulling screw feeder by the curing agent nozzle holder, the curing agent nozzle stretches into curing agent inlet place, and the position of curing agent nozzle remains unchanged; Described resin ejection nozzle is fixedly connected on the frame of mulling screw feeder by the resin ejection nozzle support, and resin ejection nozzle stretches into resin inlet place, and the position of resin ejection nozzle remains unchanged.
4. according to claim 2 or 3 described resin self-setting sand equipment mulling screw feeders, it is characterized in that: described curing agent inlet is arranged on the top barrel of mulling groove drum, and described resin inlet is arranged on the top barrel of mulling groove drum.
5. resin self-setting sand equipment mulling screw feeder according to claim 4, it is characterized in that: described mulling groove drum comprises left half groove drum and right half groove drum, the curing agent inlet when half groove drum combines with right half groove drum on a left side by the right side half shape mouth of a left side half shape mouth of the curing agent inlet that is positioned at left half groove drum and the curing agent inlet that is positioned at right half groove drum butt joint form; Equally, the resin inlet when half groove drum combines with right half groove drum on a left side by the right side half shape mouth of a left side half shape mouth of the resin inlet that is positioned at left half groove drum and the resin inlet that is positioned at right half groove drum butt joint form.
6. according to claim 2 or 3 described resin self-setting sand equipment mulling screw feeders, it is characterized in that: described curing agent feed flow pipeline is provided with the first liquid material control valve, and the curing agent nozzle inserts air compression plant by the first liquid material control valve and compressed air conveying pipeline simultaneously; Described resin feed flow pipeline is provided with the second liquid material control valve, and resin ejection nozzle inserts air compression plant by the second liquid material control valve and compressed air conveying pipeline simultaneously.
7. resin self-setting sand equipment mulling screw feeder according to claim 6, it is characterized in that: the described first liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of curing agent feed flow pipeline, and compressed air arrival curing agent nozzle will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum; The described second liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of resin feed flow pipeline, and compressed air arrival resin ejection nozzle will be detained the surplus liquid of resin and all be blown into the mulling groove drum.
8. resin self-setting sand equipment mulling screw feeder according to claim 6, it is characterized in that: the described first liquid material control valve is closed the interior compressed air conveying pipeline of opening of the very first time of curing agent feed flow pipeline, and compressed air arrival curing agent nozzle will be detained the surplus liquid of curing agent and all be blown into the mulling groove drum; When starting resin feed flow pipeline, opens the described second liquid material control valve compressed air conveying pipeline, resin mixes from resin ejection nozzle with compressed air and sprays into the mulling groove drum, after the second liquid material control valve is closed resin feed flow pipeline, time-delay a period of time closes compression air delivery pipe road makes compressed air continuation arrival resin ejection nozzle will be detained the surplus liquid of resin and all is blown into the mulling groove drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202404095U CN201530049U (en) | 2009-10-27 | 2009-10-27 | Sand mulling auger used for resin self-hardening sand equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202404095U CN201530049U (en) | 2009-10-27 | 2009-10-27 | Sand mulling auger used for resin self-hardening sand equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201530049U true CN201530049U (en) | 2010-07-21 |
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ID=42525458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202404095U Expired - Fee Related CN201530049U (en) | 2009-10-27 | 2009-10-27 | Sand mulling auger used for resin self-hardening sand equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201530049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214295A (en) * | 2017-06-19 | 2017-09-29 | 宝得粉末注射成形（常熟）有限公司 | Self-hardening sand mixing device |
| CN107639206A (en) * | 2017-08-15 | 2018-01-30 | 青岛和德隆机械有限公司 | Resin sand flow mixer and mulling method |
| CN116274853A (en) * | 2022-12-09 | 2023-06-23 | 南通普瑞特机械有限公司 | Arm type resin sand mixer |
-
2009
- 2009-10-27 CN CN2009202404095U patent/CN201530049U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214295A (en) * | 2017-06-19 | 2017-09-29 | 宝得粉末注射成形（常熟）有限公司 | Self-hardening sand mixing device |
| CN107639206A (en) * | 2017-08-15 | 2018-01-30 | 青岛和德隆机械有限公司 | Resin sand flow mixer and mulling method |
| CN116274853A (en) * | 2022-12-09 | 2023-06-23 | 南通普瑞特机械有限公司 | Arm type resin sand mixer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20121027 |