CN111360212B - Machining equipment of lost foam casting model - Google Patents

Machining equipment of lost foam casting model Download PDF

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Publication number
CN111360212B
CN111360212B CN202010276489.0A CN202010276489A CN111360212B CN 111360212 B CN111360212 B CN 111360212B CN 202010276489 A CN202010276489 A CN 202010276489A CN 111360212 B CN111360212 B CN 111360212B
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China
Prior art keywords
wheel
model
chain
conveying
rack
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CN202010276489.0A
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CN111360212A (en
Inventor
应函扬
陈忠茂
卢建明
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Taizhou Judong Precision Casting Co ltd
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Taizhou Judong Precision Casting Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C23/00Tools; Devices not mentioned before for moulding
    • B22C23/02Devices for coating moulds or cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02Lost patterns

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention relates to a processing device of a model for lost foam casting, which is used for coating refractory paint on the surface of the model and comprises a frame, a paint groove arranged at the bottom of the frame and a conveying assembly arranged at the upper part of the frame, wherein the conveying assembly comprises a wheel set, a plurality of chain supporting wheels arranged above the wheel set and a conveying chain, the frame is also provided with a motor used for driving any chain supporting wheel to rotate, the wheel set comprises at least one low-level wheel rotatably arranged on the frame, the conveying chain is wound below the low-level wheel, the chain links of the conveying chain are provided with hanging racks at intervals, the hanging racks are provided with clamping assemblies, the clamping assemblies are used for clamping the model, and when the hanging racks move to the low-level wheel, the clamping assemblies extend into the paint groove. The invention has the advantages that the model moves along with the conveying chain, the paint immersion, the paint separation and the draining are automatically completed, and in addition, the hanging racks are arranged at intervals along the conveying chain when the equipment runs, the simultaneous dip coating of a plurality of models is realized, and the effect of improving the processing efficiency is favorably realized.

Description

Machining equipment of lost foam casting model
Technical Field
The invention relates to the technical field of lost foam casting, in particular to machining equipment for a model for lost foam casting.
Background
Lost foam casting (also called solid casting) is a novel casting method which combines paraffin or foam models with similar size and shape to a casting into a model cluster by bonding, coats refractory paint and dries, then buries the model cluster in dry quartz sand for vibration modeling, pours the model under negative pressure to gasify the model, leads liquid metal to occupy the position of the model, solidifies and cools the model to form the casting, and has the outstanding advantages of high size precision, smooth surface, less pollution and the like of the casting.
In the lost foam casting process, refractory paint is required to be coated on the surface of a model, and the method mainly comprises three steps: brushing, dipping and spraying. The dip coating method is characterized in that the coated object is completely immersed in the coating, the coated object is lifted to be separated from the coating after all parts are stained with the coating, redundant coating is naturally or forcibly dripped back into a material tank, and a coating film is formed on the surface of the coated object after drying.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the invention is to provide a processing device of a model for lost foam casting, wherein the model moves along with a conveying chain, the dipping, the separation and the draining of the coating are automatically completed, and in addition, when the device runs, hanging racks are arranged at intervals along the conveying chain, so that the simultaneous dipping of a plurality of models is realized, and the processing efficiency is favorably improved.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a processing equipment of model for lost foam casting, its is used for scribbling fire-resistant coating on the surface of model, includes the frame, locates the coating groove of frame bottom and locates the conveying subassembly on frame upper portion, the conveying subassembly includes wheelset, a plurality of support chain wheel and the transfer chain of locating the wheelset top, the top of transfer chain is around locating the top of holding in the palm the sprocket, the lower part of transfer chain is around locating on the wheelset, still be equipped with in the frame and be used for driving arbitrary support chain wheel pivoted motor, the wheelset includes that at least one rotates and locates the low level wheel in the frame, the transfer chain is around establishing to the below of low level wheel, spaced being equipped with the stores pylon on the chain link of transfer chain, be equipped with the centre gripping subassembly on the stores pylon, the centre gripping subassembly is used for the centre gripping model, when the stores pylon removes to low level wheel department, the centre gripping subassembly stretches into the coating inslot, When the supporting wheel is arranged between the chain wheels, the clamping component is separated from the coating groove.
By adopting the technical scheme, the coating is stored in the coating tank, personnel mount the model on the clamping component and move along the conveying chain at the inlet of the conveying component, when the model moves to the low-level wheel, the model is immersed in the coating to complete dip coating, then the model continues to move, rises along with the conveying chain, is separated from the coating and finishes draining in the moving process, and finally, the personnel take down the model at the outlet of the conveying component to finish the coating of the refractory coating on the surface of the model; when equipment operates, the stores pylon sets up along the conveying chain interval, realizes a plurality of models dip-coating simultaneously, is favorable to improving machining efficiency.
The present invention in a preferred example may be further configured to: the stores pylon is the U-shaped, and the opening of U-shaped is downward, the centre gripping subassembly is located on the open-ended lateral wall of stores pylon U-shaped, the centre gripping subassembly is including sliding the depression bar of wearing to locate on the stores pylon, the perpendicular stores pylon U-shaped open-ended lateral wall of the slip direction of depression bar, the tip that the depression bar stretches into stores pylon U-shaped opening is equipped with the clamp plate, the clamp plate is equipped with compression spring towards between one side of depression bar and the stores pylon, and the model mounting is in the U-shaped opening of stores pylon, the lateral wall of clamp plate cooperation stores pylon presss from both.
Through adopting above-mentioned technical scheme, the clamp plate is at compression spring's elastic force effect, and automatic support tightly the model, accomplish the centre gripping to the model.
The present invention in a preferred example may be further configured to: the two side walls of the U-shaped opening of the hanging rack are provided with the clamping assemblies, and the model is installed between the pressing plates of the two clamping assemblies.
By adopting the technical scheme, the method has the advantages that,
the present invention in a preferred example may be further configured to: the centre gripping subassembly is still including rotating the sleeve that sets up, the sleeve is located on the open-ended lateral wall of stores pylon U-shaped, just the perpendicular open-ended lateral wall of stores pylon U-shaped of telescopic axis, the depression bar slides to inlay and locates in the sleeve, just circumference is fixed between sleeve, the depression bar.
Through adopting above-mentioned technical scheme, the model structure is more complicated, exists structures such as groove, hole, and the model is soaked in the coating after, rotates the sleeve, and then makes the model upset through depression bar, clamp plate for the surface of model fully contacts the coating, avoids the model surface to have the region of not paining.
The present invention in a preferred example may be further configured to: be equipped with two directly over the coating groove the low level wheel, the wheelset still includes the high level wheel that two intervals set up, two the high level wheel is located the both sides of two low level wheels respectively, the lower part of conveying chain is around locating the top of high level wheel in proper order, between high level wheel and the low level wheel, below of two low level wheels, between low level wheel and the high level wheel.
Through adopting above-mentioned technical scheme, the conveying chain is around locating the below of two low level wheels for when the model removed this section conveying chain, it was immersed in the coating all the time, and simultaneously, model self upset for the surface of coating contact model, afterwards, the model removed to high level wheel department, and it breaks away from the coating, accomplishes the driping.
The present invention in a preferred example may be further configured to: the rack is characterized in that a turnover assembly is arranged between the rack and the sleeve, the turnover assembly comprises a driven gear coaxially arranged on the sleeve and a driving gear rotatably arranged at the upper end of the rack, the driven gear is meshed with the driving gear, a rack is arranged on the rack and is located above the driving gear, and when the rack moves along with the conveying chain, the driving gear is meshed with the rack.
Through adopting above-mentioned technical scheme, when the transfer chain rotated, the stores pylon removed along with the transfer chain, and the rack is fixed, then driving gear, driven gear rotate, and then drive the sleeve and rotate, realize the upset model.
The present invention in a preferred example may be further configured to: and one side of the pressing plate, which faces the model, is provided with a sponge.
By adopting the technical scheme, the sponge is made of porous materials, and when the model is immersed in the coating, the coating flows along gaps in the sponge, so that the coating permeates between the model and the sponge, and the refractory coating on the surface of the model is coated; meanwhile, the sponge has elasticity, is automatically matched with the surface of the model, and ensures the contact area between the sponge and the model.
The present invention in a preferred example may be further configured to: the conveying assemblies are arranged on two sides of the rack respectively, the two conveying assemblies are symmetrically arranged, and two ends of the hanging rack are connected to chain links of the two conveying chains respectively.
Through adopting above-mentioned technical scheme, the common bearing stores pylon of two conveying chains for the stores pylon steady movement, and then the steady movement of guaranteeing the model guarantees the quality of paining of refractory coating.
The present invention in a preferred example may be further configured to: two one sides that the supporting chain wheel that corresponds deviates from each other in the conveying assembly all are coaxial to be equipped with from the driving wheel, coaxial connection has the action wheel on the output shaft of motor, just the action wheel is equipped with two, action wheel, follow driving wheel one-to-one and intermeshing.
Through adopting above-mentioned technical scheme, two conveying assemblies of a motor synchronous drive for two conveying chains syntropy, constant speed operation, and then make the stores pylon steady movement.
In summary, the invention includes at least one of the following beneficial technical effects:
the model moves along with the conveying chain, the coating immersion, the coating separation and the draining are automatically completed, and the hanging racks are arranged at intervals along the conveying chain when the equipment runs, so that the simultaneous dip-coating of a plurality of models is realized, and the processing efficiency is improved;
after the model is immersed in the coating, the sleeve is rotated, and then the model is turned over through the pressure lever and the pressure plate, so that the surface of the model is fully contacted with the coating, and an unpainted area on the surface of the model is avoided;
two conveying chains bear the stores pylon jointly, and two conveying assemblies of a motor synchronous drive for two conveying chains syntropy, constant speed operation, and then make the stores pylon steady movement, and then guarantee the quality of paining of fire resistant coating.
Drawings
Fig. 1 is a schematic view of the overall structure of the present embodiment.
Fig. 2 is a schematic structural view of the transfer assembly.
Fig. 3 is a schematic structural view of the hanger and the clamping assembly.
Fig. 4 is a schematic view of the overall structure of the present embodiment, which is intended to show the flip assembly.
Fig. 5 is a partially enlarged schematic view of a portion a in fig. 4.
In the figure, 1, a frame; 11. a motor; 12. a driven wheel; 13. a driving wheel; 2. a coating tank; 3. a transfer assembly; 31. a wheel set; 311. a high-position wheel; 312. a low wheel; 32. a chain supporting wheel; 33. a conveyor chain; 4. a hanger; 41. an avoidance groove; 5. a clamping assembly; 51. a sleeve; 52. a pressure lever; 53. pressing a plate; 54. a sponge; 55. a compression spring; 6. a turnover assembly; 61. a driven gear; 62. a driving gear; 63. a rack.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the equipment for processing the lost foam casting model disclosed by the invention comprises a frame 1, wherein a coating tank 2 is arranged at the bottom of the frame 1, refractory coating is stored in the coating tank 2, after the lost foam casting model is formed, the model is immersed into the coating tank 2, after all parts of the model are coated with the refractory coating, the model is lifted from the coating and drained, and the refractory coating is coated on the surface of the model.
Referring to fig. 1 and 2, two sets of conveying assemblies 3 are symmetrically arranged on the upper portion of a rack 1, each conveying assembly 3 comprises a wheel set 31, a supporting chain wheel 32 and a conveying chain 33, a motor 11 used for driving the supporting chain wheel 32 to rotate is further arranged on the upper portion of the rack 1, a set of symmetrical supporting chain wheels 32 in the two sets of conveying assemblies 3 are coaxially arranged on one side of each conveying assembly which deviates from each other, a driven wheel 12 is coaxially arranged on one side of each conveying assembly, a driving wheel 13 is coaxially connected to an output shaft of the motor 11 at intervals, and the driving wheel 13 and the driven wheel.
The conveying chains 33 are wound on the wheel sets 31 and the chain supporting wheels 32, a hanging frame is arranged between the two groups of conveying assemblies 3, two ends of the hanging frame 4 are respectively connected with chain links of the two conveying chains 33, a clamping assembly 5 is further arranged on the hanging frame 4, the clamping assembly 5 is used for clamping a model, and the model is immersed into the coating groove 2 along with the descending of the conveying chains 33 and separated from the coating groove 2 along with the ascending of the conveying chains 33.
Referring to fig. 2, the wheel set 31 includes a high wheel 311, a low wheel 312, and a high wheel 311 sequentially arranged in a conveying direction; four carrier chain wheels 32 are arranged at intervals along the conveying direction, and the two carrier chain wheels 32 are respectively arranged at two sides of the two high wheels 311; the upper part of the conveying chain 33 is wound on the upper part of the carrier wheel 32, and the lower part of the conveying chain 33 is wound on the upper part of the high wheel 311, between the high wheel 311 and the low wheel 312, below the two low wheels 312 and between the low wheel 312 and the high wheel 311 in sequence, so that the lower part of the conveying chain 33 is fluctuated.
After the model shaping is accomplished, with the model installation to centre gripping subassembly 5 on, motor 11 drive holds in the palm sprocket 32 and rotates, and then makes conveying assembly 3 operation:
the hanging rack 4 moves to a position between the chain supporting wheel 32 and the high-level wheel 311 along with the conveying chain 33, and the model is higher than the liquid level of the refractory coating in the coating groove 2; then, the hanging rack 4 moves to a position between the high-position wheel 311 and the low-position wheel 312 along with the conveying chain 33, the hanging rack 4 gradually descends, the model is gradually immersed in the refractory paint, and the hanging rack 4 continuously moves to a position between the two low-position wheels 312 along with the conveying chain 33, at the moment, the model is immersed in the refractory paint, the refractory paint is attached to the surface of the model, and the dip coating is completed;
then, the hanging rack 4 moves to a position between the low-position wheel 312 and the high-position wheel 311 along with the conveying chain 33, the hanging rack 4 gradually rises, the model gradually separates from the refractory coating, and the hanging rack 4 continuously moves to a position between the high-position wheel 311 and the chain supporting wheel 32 along with the conveying chain 33, at this time, the model completely separates from the refractory coating, and meanwhile, the redundant refractory coating on the surface of the model flows downwards to finish draining.
Referring to fig. 2 and 3, the hanger 4 is U-shaped with a downward opening, the hanger 4 is symmetrically provided with two clamping assemblies 5, the two clamping assemblies 5 are respectively disposed on two side walls of the U-shaped opening of the hanger 4, and each clamping assembly 5 includes a sleeve 51, a pressing rod 52 and a pressing plate 53.
The axis of the sleeve 51 is vertical to the side wall of the U-shaped opening of the hanging rack 4, and the sleeve 51 penetrates through the hanging rack and is rotatably arranged on the hanging rack 4; the pressing rod 52 is a square rod and is arranged in the sleeve 51 in a sliding manner, and one end of the pressing rod 52 extends into the U-shaped opening of the hanging rack 4; the pressing plate 53 is fixedly connected to the end part of the pressing rod 52 extending into the hanging rack 4, and a sponge 54 is arranged at one end of the pressing plate 53 departing from the pressing rod 52, and the sponge 54 is used for abutting against the model; the compression rod 52 is also sleeved with a compression spring 55, and two ends of the compression spring 55 respectively abut against the end parts of the pressure plate 53 and the sleeve 51; the two sleeves 51 on the hanger 4 are coaxially arranged.
When the equipment is operated, a person installs the model on the hanging rack 4, the sponges 54 of the two clamping assemblies 5 abut against the model and clamp the model under the elastic force of the compression spring 55, the model moves along with the conveying chain 33 and is immersed in the refractory coating, and the coating flows along the gaps in the sponges 54 because the sponges 54 are made of porous materials, so that the coating permeates between the model and the sponges 54; meanwhile, the sleeve 51 is rotated, so that the model is turned over, the coating is fully contacted with the surface of the model, and the refractory coating on the surface of the model is coated.
Referring to fig. 4 and 5, an overturning assembly 6 is further disposed between the frame 1 and the sleeve 51, and is used for driving the sleeve 51 to rotate, so as to overturn the model, and the overturning assembly 6 includes a driven gear 61, a driving gear 62 and a rack 63. The driven gear 61 is coaxially provided with the outer periphery of the sleeve 51, and the driven gear 61 is positioned outside the hanger 4; the driving gear 62 is rotatably arranged on the hanging rack 4 and is meshed with the driven gear 61; the rack 63 is disposed on the frame 1 and located between the two low wheels 312, and the upper end of the driving gear 62 is engaged with the rack 63. The hanger 4 is further provided with an escape groove 41 for avoiding the rotation of the driving gear 62.
The pattern is mounted on the hanger 4 and moves with the hanger 4 along the conveyor chain 33 between the two low wheels 312, at which point the pattern is immersed in the paint and the pinion 62 engages the rack 63, causing the sleeve 51 to rotate automatically and thereby drive the pattern to turn inside the paint.
The implementation principle of the embodiment is as follows: the model moves along with the conveying chain 33, the coating immersion, the coating separation and the draining are automatically completed, and when the equipment runs, the hanging frames 4 are arranged at intervals along the conveying chain 33, so that the simultaneous dip coating of a plurality of models is realized, and the processing efficiency is improved; when the model is immersed in the coating, the model is turned over, so that the surface of the model is fully contacted with the coating, an un-coated area on the surface of the model is avoided, and the coating quality of the refractory coating is ensured.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (5)

1. A processing device of a model for lost foam casting, which is used for coating refractory paint on the surface of the model, is characterized in that: comprises a rack (1), a coating trough (2) arranged at the bottom of the rack (1) and a conveying component (3) arranged at the upper part of the rack (1), wherein the conveying component (3) comprises a wheel set (31), a plurality of supporting chain wheels (32) arranged above the wheel set (31) and a conveying chain (33), the upper part of the conveying chain (33) is wound above the supporting chain wheels (32), the lower part of the conveying chain (33) is wound on the wheel set (31), the rack (1) is also provided with a motor (11) for driving any supporting chain wheel (32) to rotate, the wheel set (31) comprises at least one low-level wheel (312) rotatably arranged on the rack (1), the conveying chain (33) is wound below the low-level wheel (312), hanging racks (4) are arranged on chain links of the conveying chain (33) at intervals, and clamping components (5) are arranged on the hanging racks (4), the clamping assembly (5) is used for clamping a model, when the hanging rack (4) moves to the position of the low-position wheel (312), the clamping assembly (5) extends into the paint trough (2), and when the hanging rack (4) moves to the position between the low-position wheel (312) and the carrier roller (32), the clamping assembly (5) is separated from the paint trough (2);
the hanger (4) is U-shaped, the U-shaped opening is downward, the clamping assembly (5) is arranged on the side wall of the U-shaped opening of the hanger (4), the clamping assembly (5) comprises a pressing rod (52) which is slidably arranged on the hanger (4) in a penetrating mode, the sliding direction of the pressing rod (52) is perpendicular to the side wall of the U-shaped opening of the hanger (4), a pressing plate (53) is arranged at the end part, extending into the U-shaped opening of the hanger (4), of the pressing rod (52), a compression spring (55) is arranged between one side, facing the pressing rod (52), of the pressing plate (53) and the hanger (4), a model is installed in the U-shaped opening of the hanger (4), and the pressing plate (53) is matched with the side wall of the hanger (4);
the clamping components (5) are arranged on two side walls of the U-shaped opening of the hanging rack (4), and the model is installed between the pressing plates (53) of the two clamping components (5);
the clamping assembly (5) further comprises a sleeve (51) which is rotatably arranged, the sleeve (51) is arranged on the side wall of the U-shaped opening of the hanging rack (4), the axis of the sleeve (51) is perpendicular to the side wall of the U-shaped opening of the hanging rack (4), the pressing rod (52) is embedded in the sleeve (51) in a sliding mode, and the sleeve (51) and the pressing rod (52) are circumferentially fixed;
be equipped with between frame (1), sleeve (51) upset subassembly (6), upset subassembly (6) locate driven gear (61) on sleeve (51), rotate and locate driving gear (62) of stores pylon (4) upper end including the coaxial, driven gear (61) and driving gear (62) intermeshing, be equipped with rack (63) on frame (1), rack (63) are located the top of driving gear (62), when stores pylon (4) removed along with transfer chain (33), driving gear (62) meshing rack (63).
2. The apparatus for processing a pattern for lost foam casting according to claim 1, wherein: be equipped with two directly over scribble silo (2) low level wheel (312), wheelset (31) still include high level wheel (311) that two intervals set up, two high level wheel (311) are located the both sides of two low level wheels (312) respectively, the lower part of transfer chain (33) is around locating between the top of high level wheel (311), high level wheel (311) and low level wheel (312), the below of two low level wheels (312), between low level wheel (312) and high level wheel (311) in proper order.
3. The apparatus for processing a pattern for lost foam casting according to claim 1, wherein: and a sponge (54) is arranged on one side of the pressure plate (53) facing the model.
4. The apparatus for processing a pattern for lost foam casting according to claim 1, wherein: the conveying assemblies (3) are arranged on two sides of the rack (1) respectively, the conveying assemblies (3) are symmetrically arranged, and two ends of the hanging rack (4) are connected to chain links of the conveying chains (33) respectively.
5. The apparatus for processing a pattern for lost foam casting according to claim 1, wherein: two one side that holds in palm sprocket (32) that corresponds in conveying component (3) and deviate from each other all is coaxial to be equipped with from driving wheel (12), coaxial connection has action wheel (13) on the output shaft of motor (11), just action wheel (13) are equipped with two, action wheel (13), follow driving wheel (12) one-to-one and intermeshing.
CN202010276489.0A 2020-04-10 2020-04-10 Machining equipment of lost foam casting model Active CN111360212B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010276489.0A CN111360212B (en) 2020-04-10 2020-04-10 Machining equipment of lost foam casting model

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Application Number Priority Date Filing Date Title
CN202010276489.0A CN111360212B (en) 2020-04-10 2020-04-10 Machining equipment of lost foam casting model

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CN111360212A CN111360212A (en) 2020-07-03
CN111360212B true CN111360212B (en) 2021-03-30

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103372633A (en) * 2012-04-19 2013-10-30 无锡蠡湖叶轮制造有限公司 Method for improving quality of sand core and energy-saving type paint production line
CN204975235U (en) * 2015-08-05 2016-01-20 十堰飞远汽车零部件有限公司 Disappearance mould coating dip -coating device
CN205551418U (en) * 2016-03-29 2016-09-07 六安万邦机械科技有限公司 Disappearance mould coating dip -coating device
CN206747555U (en) * 2017-06-08 2017-12-15 山东亿和机械装备有限公司 Evaporative pattern flow coater apparatus is used in one kind casting
CN208644025U (en) * 2018-02-10 2019-03-26 六安联众工业自动化技术有限公司 A kind of full-automatic lost foam paint dip coater
CN210254125U (en) * 2019-07-08 2020-04-07 山东英莱机械科技有限公司 Shell-making slurry-soaking device for metal casting mold production

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103372633A (en) * 2012-04-19 2013-10-30 无锡蠡湖叶轮制造有限公司 Method for improving quality of sand core and energy-saving type paint production line
CN204975235U (en) * 2015-08-05 2016-01-20 十堰飞远汽车零部件有限公司 Disappearance mould coating dip -coating device
CN205551418U (en) * 2016-03-29 2016-09-07 六安万邦机械科技有限公司 Disappearance mould coating dip -coating device
CN206747555U (en) * 2017-06-08 2017-12-15 山东亿和机械装备有限公司 Evaporative pattern flow coater apparatus is used in one kind casting
CN208644025U (en) * 2018-02-10 2019-03-26 六安联众工业自动化技术有限公司 A kind of full-automatic lost foam paint dip coater
CN210254125U (en) * 2019-07-08 2020-04-07 山东英莱机械科技有限公司 Shell-making slurry-soaking device for metal casting mold production

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Denomination of invention: Processing equipment for lost foam casting model

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