CN110695347B - Sand shakeout treatment method for post-treatment process of sand casting workpiece - Google Patents
Sand shakeout treatment method for post-treatment process of sand casting workpiece Download PDFInfo
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- CN110695347B CN110695347B CN201911094680.7A CN201911094680A CN110695347B CN 110695347 B CN110695347 B CN 110695347B CN 201911094680 A CN201911094680 A CN 201911094680A CN 110695347 B CN110695347 B CN 110695347B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
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Abstract
The invention relates to a shakeout treatment method for a post-treatment process of a sand casting workpiece, which mainly comprises the following treatment steps of taking out the casting, cleaning the surface, polishing the surface, finely cleaning, checking the appearance and the like. The invention can solve the following problems in the post-treatment process of the existing sand casting workpiece: a, sand grains on the surface of a cast workpiece need to be cleaned manually, after the cast workpiece needs to be fixed in manual cleaning operation, the brush is held by hand to clean the surface of the workpiece, the operation is complex, the sand grains b on the surface of the workpiece cannot be completely cleaned by manual cleaning, the manual cleaning efficiency is low, large-scale batch cleaning operation on the workpiece cannot be carried out, and the production cost is high.
Description
Technical Field
The invention relates to the technical field of sand casting, in particular to a shakeout treatment method for a post-treatment process of a sand casting workpiece.
Background
Sand casting refers to a casting process that produces a casting in a sand mold. Steel, iron and most nonferrous metal castings can be obtained by sand casting. Because the molding material used for sand casting is cheap and easy to obtain, the casting mold is simple and convenient to manufacture, and the casting mold can adapt to single-piece production, batch production and mass production of castings, the basic process in casting production is long-term, a workpiece manufactured by a sand casting process needs to be subjected to subsequent processing after being molded, and the molded casting workpiece needs to be subjected to multiple processes of casting taking out, surface cleaning, surface polishing, fine cleaning, appearance inspection and the like in the processing operation.
However, the following problems exist in the post-treatment process of the prior sand casting workpiece: a, sand grains on the surface of a cast workpiece need to be cleaned manually, after the cast workpiece needs to be fixed in manual cleaning operation, the brush is held by hand to clean the surface of the workpiece, the operation is complex, the sand grains b on the surface of the workpiece cannot be completely cleaned by manual cleaning, the manual cleaning efficiency is low, large-scale batch cleaning operation on the workpiece cannot be carried out, and the production cost is high.
For the technical problems existing in the sand casting process at present, persons in the related technical field make adaptive improvements after research, for example, chinese patent No. 201410689686X discloses a sand casting method, which improves the dimensional accuracy and yield of cast workpieces, but does not mention the problems of the sand casting workpieces in the post-treatment process mentioned above.
Disclosure of Invention
In order to solve the problems, the invention provides a sand shakeout treatment method for a post-treatment process of a sand casting workpiece, which can solve the problems existing in the post-treatment process of the sand casting workpiece mentioned above.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a shakeout treatment method for a post-treatment process of a sand casting workpiece mainly comprises the following treatment steps:
taking out the casting, manually taking out the cast workpiece from the sand box through a clamp, and cooling to natural temperature in a ventilating way to obtain a molded workpiece
Secondly, cleaning the surface, namely placing the formed workpiece into cleaning equipment, and removing sand grains adhered to the surface of the formed workpiece through the cleaning equipment to obtain a cleaned workpiece
Polishing the surface, namely fixing the cleaning workpiece, and polishing burrs on the surface and the edges and corners of the cleaning workpiece by using abrasive paper to obtain a polished workpiece;
fine cleaning, namely arranging the polished workpieces in sequence, manually holding an air gun to clean the surfaces of the polished workpieces and the positions of connecting gaps, and removing dust on the surfaces of the workpieces to obtain finished workpieces;
step five, appearance inspection, namely observing the appearance condition of the finished workpiece by naked eyes and making a record;
the process in the first to fifth steps needs to be matched with cleaning equipment for operation, the cleaning equipment comprises a bottom plate, a lifting spring rod is mounted on the bottom plate, a conveying frame is mounted at the upper end of the lifting spring rod, a transverse overturning branched chain is arranged in the conveying frame, a vibrating mechanism is connected between the conveying frame and the bottom plate, a processing frame is mounted on the bottom plate, and a processing mechanism is arranged on the processing frame;
the vibrating mechanism comprises a vibrating rod arranged at the lower end of the conveying frame, the lower end of the vibrating rod abuts against a vibrating block, the vibrating block is connected to the bottom plate in a sliding fit mode, the left end of the vibrating block is connected to a telescopic cylinder, and the telescopic cylinder is fixed to the bottom plate;
the treatment mechanism comprises sliding grooves which are uniformly arranged at the upper end of the treatment frame, a sliding frame is arranged in the sliding grooves in a sliding fit mode, a sliding support plate is arranged at the lower end of the sliding frame, a reset spring rod is arranged at the lower end of the sliding support plate, the lower end of the reset spring rod is arranged on an execution frame, a longitudinal overturning branch chain is arranged in the execution frame, and the longitudinal overturning branch chain and a transverse overturning branch chain are arranged in parallel;
the left and right sides symmetry of handling the frame upper end is installed and is handled the riser, handle and install through the bearing between the riser and handle the post, it handles the pole to install on the outer wall of post, it supports and leans on the carriage to handle the pole, the left end of handling the post is passed one of handling the riser and is served and install the rotor plate, it installs the baffle on the outer wall of riser to handle, install directional spring on the baffle, directional spring connects on the rotor plate, it installs the processing motor through the motor cabinet on the outer wall of riser to handle, install on the output shaft of processing motor and handle oval piece, it supports and leans on the rotor plate to handle oval piece, install the slip spring beam on the carriage, the.
The vibration operation rod is connected to the sliding support plate through a pin shaft, the lower end of the vibration operation rod abuts against the upper end face of the execution frame, a vibration spring is connected between the vibration operation rod and the sliding support plate, the sliding support plate is provided with a control motor through a motor base, an output shaft of the control motor is provided with an eccentric disc, and the eccentric disc abuts against the execution frame.
The horizontal upset branch chain is including evenly setting up the drain hole on carrying the frame lower terminal surface, turns right equidistant conveyer trough that is provided with from a left side on carrying the frame, is provided with horizontal oval transport post through the bearing in the conveyer trough, and the front end of horizontal oval transport post passes and carries the frame and install linkage band pulley, links to each other through the linkage area between the linkage band pulley, and the linkage band pulley that is located the transport frame left end is installed on the output shaft of conveying motor, and conveying motor passes through the motor cabinet and installs on the outer wall of carrying the frame.
The vertical overturning branch chain comprises a treatment groove which is arranged on the lower end face of the execution frame at equal intervals from front to back, a vertical elliptical conveying column is installed in the treatment groove through a bearing, the right end of the vertical elliptical conveying column penetrates through the execution frame and is provided with a chain wheel, a chain is connected between the chain wheels, the chain wheel which is located at the left end of the execution frame is installed on an output shaft of an execution motor, and the execution motor is installed on the outer wall of the execution frame through a motor base.
The conveying frame is of a downward inclined structure from left to right, and cleaning bristles are uniformly arranged on the inner wall of the conveying frame.
The end face of the vibrating block in contact with the vibrating rod is of a rugged structure.
1. The invention can solve the following problems in the post-treatment process of the existing sand casting workpiece: a, sand grains on the surface of a cast workpiece need to be cleaned manually, after the cast workpiece needs to be fixed in manual cleaning operation, the brush is held by hand to clean the surface of the workpiece, the operation is complex, the sand grains b on the surface of the workpiece cannot be completely cleaned by manual cleaning, the manual cleaning efficiency is low, large-scale batch cleaning operation on the workpiece cannot be carried out, and the production cost is high. The present invention can solve the technical problems existing in the above and has unexpected effects.
2. According to the cleaning equipment designed by the invention, the cast workpieces are placed in the conveying frame in operation, the workpieces slide in the conveying frame along the inclined direction of the conveying frame, and the cleaning equipment can clean the cast workpieces in batch, so that the cleaning efficiency of the cast workpieces is improved, and the production cost is reduced.
3. The longitudinal overturning branch chain and the transverse overturning branch chain designed by the invention can automatically control the cast workpiece to overturn in multiple directions in the front, back, left and right directions in the conveying frame in the operation of cleaning the cast workpiece, and can carry out vibration type comprehensive cleaning operation on the cast workpiece through the matching of the vibration mechanism.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a workflow of the present invention such as;
FIG. 2 is a plan view of the cleaning apparatus of the present invention
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a partial block diagram of the processing framework of the present invention;
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in figures 1 to 4, a processing machine for laying and processing PCB (printed circuit board) insulation lamination comprises a first step of taking out a casting, manually taking out a workpiece after casting molding from a sand box through a clamp, and cooling to natural temperature in an air-cooling manner to obtain a molded workpiece
Secondly, cleaning the surface, namely placing the formed workpiece into cleaning equipment, and removing sand grains adhered to the surface of the formed workpiece through the cleaning equipment to obtain a cleaned workpiece
Polishing the surface, namely fixing the cleaning workpiece, and polishing burrs on the surface and the edges and corners of the cleaning workpiece by using abrasive paper to obtain a polished workpiece;
fine cleaning, namely arranging the polished workpieces in sequence, manually holding an air gun to clean the surfaces of the polished workpieces and the positions of connecting gaps, and removing dust on the surfaces of the workpieces to obtain finished workpieces;
step five, appearance inspection, namely observing the appearance condition of the finished workpiece by naked eyes and making a record;
the process in the first to fifth steps needs to be matched with cleaning equipment for operation, the cleaning equipment comprises a bottom plate 1, a lifting spring rod 2 is mounted on the bottom plate 1, a conveying frame 3 is mounted at the upper end of the lifting spring rod 2, a transverse overturning branched chain 4 is arranged inside the conveying frame 3, a vibrating mechanism 5 is connected between the conveying frame 3 and the bottom plate 1, a processing frame 6 is mounted on the bottom plate 1, and a processing mechanism 7 is arranged on the processing frame 6;
the vibrating mechanism 5 comprises a vibrating rod 51 installed at the lower end of the conveying frame 3, the lower end of the vibrating rod 51 is abutted against a vibrating block 52, the vibrating block 52 is connected to the bottom plate 1 in a sliding fit mode, the left end of the vibrating block 52 is connected to a telescopic cylinder 53, the telescopic cylinder 53 is fixed to the bottom plate 1, and the end face, in contact with the vibrating rod 51, of the vibrating block 52 is of an uneven structure.
The lifting spring rod 2 plays a role in supporting and buffering the conveying frame 3 in operation, the telescopic cylinder 53 controls the vibrating block to perform telescopic operation, and the vibrating block 52 changes the contact position with the vibrating rod 51 in motion so as to control the conveying frame 3 to perform vibrating operation.
The transverse overturning branch chain 4 comprises material leakage ports evenly arranged on the lower end face of the conveying frame 3, conveying grooves are arranged on the conveying frame 3 at equal intervals from left to right, transverse oval conveying columns 41 are arranged in the conveying grooves through bearings, the front ends of the transverse oval conveying columns 41 penetrate through the conveying frame 3 and are provided with linkage belt wheels 42, the linkage belt wheels 42 are connected through linkage belts 43, the linkage belt wheels 42 located at the left end of the conveying frame 3 are arranged on an output shaft of a conveying motor 44, and the conveying motor 44 is arranged on the outer wall of the conveying frame 3 through a motor base.
Carry frame 3 to turn right from a left side and be the downward sloping structure, and evenly be provided with on the inner wall of carrying frame 3 and clean the brush hair.
The work of conveying motor 44 is through the horizontal oval conveying post 41 of belt drive mode control and is rotated in the operation, and horizontal oval conveying post 41 can control the landing speed of casting work piece in conveying frame 3 inside rotating the operation, can cut apart the distance of casting work piece in conveying frame 3 through the horizontal oval conveying post 41 of even setting simultaneously, avoids colliding each other between the work piece in the clearance operation, has improved the quality of casting work piece clearance.
The treatment mechanism 7 comprises sliding grooves which are uniformly arranged at the upper end of the treatment frame 6, a sliding frame 71 is arranged in the sliding grooves in a sliding fit mode, a sliding support plate 72 is arranged at the lower end of the sliding frame 71, a return spring rod 73 is arranged at the lower end of the sliding support plate 72, the lower end of the return spring rod 73 is arranged on an execution frame 74, cleaning bristles are uniformly arranged at the lower end of the execution frame 74, a longitudinal overturning branched chain 75 is arranged in the execution frame 74, and the longitudinal overturning branched chain 75 is arranged in parallel with the transverse overturning branched chain 4;
the left side and the right side of the upper end of the processing frame 6 are symmetrically provided with processing vertical plates 61, processing columns 62 are arranged among the processing vertical plates 61 through bearings, processing rods 69 are arranged on the outer walls of the processing columns 62, the processing rods 69 abut against a sliding frame 71, one end, penetrating through the processing vertical plates 61, of the left end of each processing column 62 is provided with a rotating plate 63, the outer walls of the processing vertical plates 61 are provided with baffles 64, directional springs 65 are arranged on the baffles 64, the directional springs 65 are connected to the rotating plates 63, a processing motor 66 is arranged on the outer walls of the processing vertical plates 61 through a motor base, an output shaft of the processing motor 66 is provided with a processing elliptical block 67, the processing elliptical block 67 abuts against the rotating plates 63, the sliding frame 71 is provided with a sliding spring rod 68, and the sliding spring rod 68 is arranged on the processing frame 6.
The processing motor 66 works and controls the processing elliptical block 67 to rotate, the processing elliptical block 67 extrudes the rotating plate 63 in the rotating operation, the directional spring 65 plays a role in resetting the rotating plate 63, the rotating plate 63 controls the processing rod 69 to extrude the sliding frame 71 in the rotating operation, the sliding frame 71 drives the execution frame 74 to synchronously move, and the sliding spring rod 68 plays a role in resetting the execution frame 74.
The longitudinal overturning branched chain 75 comprises processing grooves which are arranged on the lower end face of the execution frame 74 at equal intervals from front to back, a longitudinal elliptical conveying column 751 is installed in each processing groove through a bearing, the right end of the longitudinal elliptical conveying column 751 penetrates through the execution frame 74 and is provided with a chain wheel 752, a chain 753 is connected between the chain wheels 752, the chain wheel 752 located at the left end of the execution frame 74 is installed on an output shaft of an execution motor 755, and the execution motor is installed on the outer wall of the execution frame 74 through a motor base.
The longitudinal overturning branch chain 75 is controlled by an actuating motor to rotate a chain wheel 752 during operation, the chain wheel 752 is controlled by a chain 753 to synchronously rotate the longitudinal elliptic conveying column 751 during rotation operation, the longitudinal elliptic conveying column 751 during rotation operation controls the cast workpiece in the conveying frame 3 to overturn forwards and backwards, the cast workpiece during overturning operation is directly contacted with the cleaning bristles, and the cleaning bristles can completely clean the cast workpiece.
The sliding support plate 72 is connected with a vibration operation rod 721 through a pin shaft, the lower end of the vibration operation rod 721 abuts against the upper end face of the execution frame 74, a vibration spring 724 is connected between the vibration operation rod 721 and the sliding support plate 72, the sliding support plate 72 is provided with a control motor 722 through a motor base, an output shaft of the control motor 722 is provided with an eccentric disc 723, and the eccentric disc 723 abuts against the execution frame 74.
The control motor 722 drives the eccentric disc 723 to rotate, the eccentric disc 723 and the vibration spring 724 are matched with each other to control the execution frame 74 to vibrate up and down in operation, and the reset spring rod 73 plays a role in limiting and resetting the execution frame 74.
In the work:
casting workpieces are placed in the conveying frame 3 in sequence, the transverse overturning branch chain 4 controls the transverse elliptical conveying columns 41 to rotate under the working control, the transverse elliptical conveying columns 41 can control the sliding speed of the casting workpieces in the conveying frame 3 in the rotating operation, meanwhile, the distance of the casting workpieces in the conveying frame 3 can be divided through the uniformly arranged transverse elliptical conveying columns 41, the mutual collision among the workpieces in the cleaning operation is avoided, the vibrating mechanism 5 works to vertically move through the vibrating placement control execution frame 74, the execution frame 74 moves back and forth under the action of the processing motor 66, the longitudinal overturning branch chain 75 controls the longitudinal elliptical conveying columns to synchronously rotate, the longitudinal elliptical conveying columns 751 in the rotating operation controls the casting workpieces in the conveying frame 3 to overturn back and forth, and the casting workpieces in the overturning operation are directly contacted with cleaning bristles, the cleaning brush can clean the cast workpiece comprehensively.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A sand shakeout treatment method for a post-treatment process of a sand casting workpiece is characterized by comprising the following steps: the method mainly comprises the following processing steps:
taking out a casting, manually taking out the cast workpiece from a sand box through a clamp, and cooling to natural temperature in a ventilating manner to obtain a molded workpiece;
secondly, surface cleaning, namely placing the formed workpiece into cleaning equipment, and removing sand grains adhered to the surface of the formed workpiece through the cleaning equipment to obtain a cleaned workpiece;
polishing the surface, namely fixing the cleaning workpiece, and polishing burrs on the surface and the edges and corners of the cleaning workpiece by using abrasive paper to obtain a polished workpiece;
fine cleaning, namely arranging the polished workpieces in sequence, manually holding an air gun to clean the surfaces of the polished workpieces and the positions of connecting gaps, and removing dust on the surfaces of the workpieces to obtain finished workpieces;
step five, appearance inspection, namely observing the appearance condition of the finished workpiece by naked eyes and making a record;
the process in the first step to the fifth step needs to be matched with cleaning equipment for operation, the cleaning equipment comprises a bottom plate (1), a lifting spring rod (2) is installed on the bottom plate (1), a conveying frame (3) is installed at the upper end of the lifting spring rod (2), a transverse overturning branched chain (4) is arranged inside the conveying frame (3), a vibrating mechanism (5) is connected between the conveying frame (3) and the bottom plate (1), a processing frame (6) is installed on the bottom plate (1), and a processing mechanism (7) is arranged on the processing frame (6);
the vibrating mechanism (5) comprises a vibrating rod (51) arranged at the lower end of the conveying frame (3), the lower end of the vibrating rod (51) abuts against a vibrating block (52), the vibrating block (52) is connected to the bottom plate (1) in a sliding fit mode, the left end of the vibrating block (52) is connected to a telescopic cylinder (53), and the telescopic cylinder (53) is fixed to the bottom plate (1);
the treatment mechanism (7) comprises sliding grooves which are uniformly arranged at the upper end of the treatment frame (6), a sliding frame (71) is arranged in each sliding groove in a sliding fit mode, a sliding support plate (72) is installed at the lower end of each sliding frame (71), a reset spring rod (73) is installed at the lower end of each sliding support plate (72), the lower end of each reset spring rod (73) is installed on an execution frame (74), a longitudinal turning branched chain (75) is arranged inside each execution frame (74), and each longitudinal turning branched chain (75) and each transverse turning branched chain (4) are arranged in parallel;
the processing device is characterized in that processing vertical plates (61) are symmetrically arranged on the left side and the right side of the upper end of the processing frame (6), processing columns (62) are arranged between the processing vertical plates (61) through bearings, processing rods (69) are arranged on the outer walls of the processing columns (62), the processing rods (69) abut against a sliding frame (71), a rotating plate (63) is arranged at one end, penetrating through the processing vertical plates (61), of the left end of each processing column (62), a baffle (64) is arranged on the outer wall of each processing vertical plate (61), a directional spring (65) is arranged on each baffle (64), the directional springs (65) are connected onto the rotating plate (63), a processing motor (66) is arranged on the outer wall of each processing vertical plate (61) through a motor base, a processing elliptical block (67) is arranged on an output shaft of each processing motor (66), the processing elliptical block (67) abuts against the rotating plate (63), and a sliding spring rod (68) is arranged on the sliding frame (71), the sliding spring rods (68) are mounted on the processing frame (6).
2. The shakeout treatment method for the post-treatment process of the sand casting workpiece according to claim 1, which is characterized in that: the vibration operation rod (721) is connected to the sliding support plate (72) through a pin shaft, the lower end of the vibration operation rod (721) abuts against the upper end face of the execution frame (74), a vibration spring (724) is connected between the vibration operation rod (721) and the sliding support plate (72), a control motor (722) is installed on the sliding support plate (72) through a motor base, an eccentric disc (723) is installed on an output shaft of the control motor (722), and the eccentric disc (723) abuts against the execution frame (74).
3. The shakeout treatment method for the post-treatment process of the sand casting workpiece according to claim 1, which is characterized in that: the horizontal overturning branch chain (4) comprises material leakage openings uniformly arranged on the lower end face of the conveying frame (3), conveying grooves are formed in the conveying frame (3) in a right-turning equidistant mode, horizontal elliptical conveying columns (41) are arranged in the conveying grooves through bearings, the front ends of the horizontal elliptical conveying columns (41) penetrate through the conveying frame (3) and are provided with linkage belt wheels (42), the linkage belt wheels (42) are connected through linkage belts (43), the linkage belt wheels (42) located at the left end of the conveying frame (3) are installed on an output shaft of a conveying motor (44), and the conveying motor (44) is installed on the outer wall of the conveying frame (3) through a motor base.
4. The shakeout treatment method for the post-treatment process of the sand casting workpiece according to claim 1, which is characterized in that: the vertical overturning branch chain (75) comprises a processing groove which is arranged on the lower end face of the execution frame (74) at equal intervals from front to back, a vertical elliptical conveying column (751) is installed in the processing groove through a bearing, the right end of the vertical elliptical conveying column (751) penetrates through the execution frame (74) and is provided with a chain wheel (752), a chain (753) is connected between the chain wheels (752), the chain wheel (752) positioned at the left end of the execution frame (74) is installed on an output shaft of the execution motor (755), and the execution motor is installed on the outer wall of the execution frame (74) through a motor base.
5. The shakeout treatment method for the post-treatment process of the sand casting workpiece according to claim 1, which is characterized in that: the conveying frame (3) is of a downward inclined structure from left to right, and cleaning bristles are uniformly arranged on the inner wall of the conveying frame (3).
6. The shakeout treatment method for the post-treatment process of the sand casting workpiece according to claim 1, which is characterized in that: the end face of the vibrating block (52) contacting with the vibrating rod (51) is of an uneven structure.
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| CN201911094680.7A CN110695347B (en) | 2019-11-11 | 2019-11-11 | Sand shakeout treatment method for post-treatment process of sand casting workpiece |
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| CN111266558A (en) * | 2020-02-17 | 2020-06-12 | 管冰倩 | Shakeout treatment method after valve casting molding |
| CN111482857B (en) * | 2020-06-01 | 2021-11-30 | 山西宝隆科技有限公司 | Surface treatment system after forming of metallurgical casting connecting piece |
| CN112170821A (en) * | 2020-09-10 | 2021-01-05 | 芜湖市云峰铸造有限责任公司 | Sand mold separation processing apparatus |
| CN112958752B (en) * | 2021-01-29 | 2022-04-08 | 景德镇航胜航空机械有限公司 | Surface treatment process for aluminum magnesium alloy precision die casting |
| CN116652159B (en) * | 2023-07-03 | 2023-11-03 | 浙江前进暖通科技股份有限公司 | Full-automatic processing production line for post-treatment of aluminum condensing heat exchanger castings |
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| DE2607265C3 (en) * | 1976-02-23 | 1979-04-19 | Mec-Fond S.P.A., S. Prospero, Modena (Italien) | Device for cooling castings and molding sand |
| JP2000263219A (en) * | 1999-03-11 | 2000-09-26 | Isuzu Seisakusho:Kk | Apparatus for separating and conveying sand mold casting |
| CN104043813B (en) * | 2014-06-18 | 2016-04-06 | 江苏远华轻化装备有限公司 | A kind of automatic desanding equipment |
| CN106735117B (en) * | 2016-12-25 | 2018-08-17 | 重庆市永川区华益机械铸造有限责任公司 | Convertible cast cleaning device |
| CN208644046U (en) * | 2018-07-09 | 2019-03-26 | 绍兴宏通机械有限公司 | A kind of casting sand mo(u)ld separator |
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Effective date of registration: 20210716 Address after: 321400 No.8 Cangling Road, Hu Town, Jinyun County, Lishui City, Zhejiang Province Applicant after: ZHEJIANG QIANJIN HEATING VENTILATION TECHNOLOGY Co.,Ltd. Address before: School of materials science and engineering, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300110 Applicant before: Huo Xiupei |
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