CN110976764B - Precoated sand shell mold casting process - Google Patents
Precoated sand shell mold casting process Download PDFInfo
- Publication number
- CN110976764B CN110976764B CN201911309426.4A CN201911309426A CN110976764B CN 110976764 B CN110976764 B CN 110976764B CN 201911309426 A CN201911309426 A CN 201911309426A CN 110976764 B CN110976764 B CN 110976764B
- Authority
- CN
- China
- Prior art keywords
- locking
- mold
- precoated sand
- groove
- metal supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention belongs to the technical field of casting technology, in particular to a precoated sand shell mold casting technology; the locking module in the process comprises a supporting plate, a locking ring and a locking rod, wherein a locking groove is formed in the top surface of the supporting plate, the locking ring is arranged in the locking groove, the locking rod is in threaded connection with the middle of the locking ring, positioning grooves are symmetrically formed in two ends of the bottom surface of the locking ring, positioning blocks are connected in the positioning grooves in a sliding mode, and the inner ends of the positioning blocks are connected with the inner end surfaces of the positioning grooves through springs; according to the invention, the locking rods in the locking modules are used for extruding and fixing the sand supplementing blocks at the top of the precoated sand shell mold, so that the metal mold supporting gland can conveniently and stably lock the sand supplementing blocks with different heights, and the casting quality of the precoated sand shell mold is effectively improved; in addition, the rotating plate is arranged at the bottom end of the side wall of the locking groove, so that the outer end of the positioning block can be stably and easily extruded into the positioning groove, and the convenience in the process of casting the film-coated sand shell mold is enhanced.
Description
Technical Field
The invention belongs to the technical field of casting processes, and particularly relates to a precoated sand shell mold casting process.
Background
The casting process method of the green sand has the characteristics of short production period, no limit on the size of the product batch, convenience, flexibility and the like, and is widely applied to casting enterprises; but the casting produced by the process method has insufficient quality stability and low dimensional accuracy, and cannot meet the production of automobile parts with higher requirements, and the improved method of the prior art is to configure a precoated sand shell core in a green sand cavity to stabilize the surface quality of the casting and improve the dimensional accuracy grade of the casting; however, the improved process still uses green sand as a carrier, and the process still belongs to a green sand casting process, and therefore, matched sand treatment facilities and molding equipment are required to be invested, so that the investment cost is high.
For this reason, some technical solutions related to the precoated sand shell mold casting process have also appeared in the prior art, such as chinese patent with patent number 2017102386999, the patent name is a patent document of a conformal metal mold carrier precoated sand shell mold casting process, disclose a conformal metal mold carrier precoated sand shell mold casting process, realized through conformal metal mold carrier precoated sand shell mold assembly, the assembly includes precoated sand shell mold, conformal metal mold carrier and sand make-up block, the precoated sand shell mold is set up on conformal metal mold carrier, the sand make-up block is blocked on the precoated sand shell mold, the gating system is designed in the sand make-up block, wherein conformal metal mold carrier includes conformal metal mold carrier gland and conformal metal mold carrier base, the conformal metal mold carrier base is designed in a symmetrical mode, there are die cavities and reserved spaces on the conformal metal mold carrier base; the shape-following metal supporting die pressing cover and the shape-following metal supporting die base are respectively provided with a fixed block at corresponding positions on the side face, the precoated sand shell mold is placed in the die cavity corresponding to the shape-following metal supporting die base, and the sand supplementing block is clamped on the precoated sand shell mold and placed in the reserved space corresponding to the shape-following metal supporting die base.
Although the casting process is simple and easy to implement, the labor intensity is low, the cost is low, the surface quality of the casting can be effectively stabilized, and the dimensional precision grade of the casting can be improved, the invention still has the following problems: when closing metal bearing die gland and fixing the benefit sand piece at tectorial membrane sand shell mould top, the integral type fixed knot that pivoted metal bearing die gland tip set up this moment constructs can not make things convenient for effectually fixing benefit sand piece top surface, also can not make things convenient for fixed knot to construct simultaneously dismantlement, and when facing the benefit sand piece of co-altitude not, need change different metal bearing die glands and fix, not only the waste time, cause the increase in the casting cost, still can influence the casting quality and the machining precision of tectorial membrane sand shell mould.
In view of the above, the invention provides a precoated sand shell mold casting process, which is characterized in that a locking rod in a locking module is used for extruding and fixing the sand supplementing blocks at the top of the precoated sand shell mold, so that a metal mold supporting gland can conveniently and stably lock the sand supplementing blocks with different heights, and the casting quality of the precoated sand shell mold is effectively improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a precoated sand shell mold casting process, which is characterized in that a locking rod in a locking module is used for extruding and fixing a sand supplement block at the top of a precoated sand shell mold, so that a metal mold supporting gland can conveniently and stably lock the sand supplement blocks with different heights, and the casting quality of the precoated sand shell mold is effectively improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a precoated sand shell mold casting process, which comprises the following steps:
s1: processing a set of precoated sand shell type hot core box according to the shape of a product to be cast, processing the precoated sand shell type hot core box to manufacture a precoated sand shell, and designing a metal supporting mold base and a metal supporting mold pressing cover in a metal supporting mold according to the external shape of the precoated sand shell type hot core box; the designed base and the gland can be effectively matched with the precoated sand shell by arranging the metal supporting die base and the metal supporting die gland which are matched with the precoated sand shell in shape;
s2: after the metal supporting die pressing cover is designed in S1, a group of locking modules are arranged on the periphery of the metal supporting die pressing cover, and the processed metal supporting die base and the metal supporting die pressing cover are hinged in place through a rotating hinge; the metal supporting die base and the metal supporting die pressing cover are hinged through the rotating hinge, so that the metal supporting die pressing cover can be conveniently assembled and disassembled when the coated sand shell is fixed;
s3: after the rear metal supporting die base and the metal supporting die gland are connected in S2, the combined precoated sand shell mold is arranged in the die cavity corresponding to the metal supporting die base, the corresponding sand supplementing block is arranged after the mould cavity is filled with the precoated sand shell mold, and the metal supporting die glands on the two sides are closed; the combined precoated sand shell mold is arranged in a mold cavity corresponding to the metal support mold base, and is covered and fixed through the metal support mold gland, so that the surface quality of the casting can be effectively stabilized, and the dimensional precision grade of the casting can be improved;
s4: after the metal supporting mold pressing covers on the two sides are folded in S3, locking the sand supplementing block by using a locking rod in a locking module, installing a sprue cup at a sprue of the sand supplementing block, and then performing casting molding; through the arranged locking module, the metal supporting mold gland can conveniently and stably lock the sand supplement block, so that the casting quality of the precoated sand shell mold is effectively improved;
the bottom end of the precoated sand shell used in the S1 is provided with a metal supporting die base designed according to the external shape of the precoated sand shell, two ends of the top surface of the metal supporting die base are symmetrically hinged with metal supporting die pressing covers, and the interior of each metal supporting die pressing cover is designed into a shape matched with the external shape of the precoated sand shell; a sand supplement block is arranged at the top of the precoated sand shell mold, and a pouring gate is arranged on the top surface of the sand supplement block; a group of shape following cavities matched with the shape of the precoated sand shell are symmetrically arranged at two ends of the top surface of the metal supporting die gland, locking modules are arranged on the top surfaces of the shape following cavities, each locking module comprises a supporting plate, a locking ring and a locking rod, the supporting plates are arranged on the top surfaces of the shape following cavities in an L shape, locking grooves are formed in the top surfaces of the supporting plates, limiting grooves are formed in the side walls of one ends of the locking grooves, the locking rings are arranged in the locking grooves, limiting blocks matched with the locking rings are arranged at the positions, corresponding to the limiting grooves, of the locking rings, the locking rods are in threaded connection with the middle parts of the locking rings, positioning grooves are symmetrically arranged at two ends of the bottom surfaces of the locking rings, positioning blocks are connected in the positioning grooves in a sliding mode, and the inner ends of the positioning blocks are connected with the inner end surfaces of the positioning grooves through springs; when the precoated sand shell mold is in operation, when the metal supporting mold gland is covered and the sand supplementing block at the top of the precoated sand shell mold is fixed, the integral fixing structure arranged at the end part of the rotating metal supporting mold gland cannot conveniently and effectively fix the top surface of the sand supplementing block, and meanwhile, the fixing structure is not convenient to disassemble; when the metal supporting die gland in the invention works, when a sand supplement block at the top of the precoated sand shell mold is fixed, firstly, the metal supporting die gland is covered on the precoated sand shell mold, then the support plate moves to the top end of the sand supplement block, then the limit blocks at the side surfaces of the locking ring are aligned with the limit grooves on the quasi-locking groove, after the locating blocks at the two sides of the bottom end of the locking ring are pressed into the locating grooves, the whole locking ring is inserted into the locking groove, when the locating blocks move to the opening at the bottom end of the locking ring, the locating blocks are ejected out of the locating grooves under the action of the inner end springs and are located at the bottom end of the support plate at one side of the locking groove, then the locating blocks located between the bottom end of the support plate and the locating grooves can effectively limit the axial movement of the locking ring, at the moment, the limit blocks clamped in the limit grooves can limit the radial rotation of the locking ring, at the moment, the locking rod in threaded connection in the locking ring is twisted, make the check lock lever bottom during the downstream to the not high mend sand block of bottom extrude fixedly to effectual metal support mould gland that has increased and mended the result of use of sand block, and then strengthened tectorial membrane sand shell mould's casting quality and machining precision.
Preferably, a squeezing groove is arranged at the position, corresponding to the positioning groove, of the bottom end of the side wall of the locking groove, and one end, close to the positioning groove, of the squeezing groove is connected with the rotating plate through a torsion spring; the during operation, when the cast of tectorial membrane sand shell mould is accomplished man-hour, make the commentaries on classics board bottom carry out more powerful extrusion to the locating piece outer end of bottom this moment through rotating the commentaries on classics board, make the locating piece outer end advance inside the constant head tank by stable convenient extrusion under the pressure of commentaries on classics board, thereby make the locating piece that slides to the constant head tank inside no longer carry on spacingly to the ascending motion of locking ring axial, make the check lock lever drive locking ring from the inside roll-off of locking groove through applying the pulling force to the check lock lever this moment, the check lock lever bottom is no longer extrudeed fixed to the benefit sand piece simultaneously, make the check lock lever can work by convenient and fast, thereby convenience when having strengthened tectorial membrane sand shell mould casting.
Preferably, the bottom end of the rotating plate is connected with a pressing block, the bottom surface of the pressing block is connected with an arc-shaped pressing rod, and the other end of the pressing rod is connected with a pressing plate; the during operation, through rotating the board and making its depression bar and the synchronous rotation of clamp plate that drive to connect on the briquetting, make the clamp plate can move to the position that flushes mutually with the outer terminal surface of locating piece and extrude it, the clamp plate that sets up this moment can apply horizontally effort to the outer terminal surface of locating piece and make its light slip to the location intracavity portion, and when the locating piece was extrudeed to the constant head tank inside completely, the clamp plate rotated to between the locking ring lateral wall of constant head tank opening and constant head tank one side this moment, when guaranteeing that the locating piece lies in the constant head tank inside all the time and make things convenient for the locking ring to pull out smoothly from the locking inslot portion, also reduce the inside hindrance that leads to the fact of the motion of clamp plate card entering constant head tank and locking ring, thereby effectual stability and the validity when having strengthened tectorial membrane sand shell type casting.
Preferably, the bottom surfaces of the rotating plates are arranged into inclined surfaces which are inclined upwards, the upper surfaces of the positioning blocks are arranged into inclined shapes which are parallel to the bottom surfaces of the rotating plates, and a traction rope is connected between the two rotating plates; when the rotary plate is in work, the bottom surface of the rotary plate and the upper surface of the positioning block are arranged to be mutually parallel and inclined, so that the positioning block can move to the bottom end of the rotary plate more easily and is tightly attached to the bottom end of the rotary plate, the limit of the positioning block on the axial direction of the locking ring is enhanced, and the inclined rotary plate bottom surface can extrude the positioning block into the positioning groove more easily when rotating; simultaneously through the haulage rope that the pulling changes and is connected between the board for the haulage rope atress drives the commentaries on classics board synchronous rotation at both ends, and then makes synchronous pivoted change the board and can push the locating piece into the constant head tank simultaneously inside, has further strengthened the convenience of tectorial membrane sand shell mould during operation.
Preferably, the pressing block is made of a hard magnet material, and the pressing block can adsorb the positioning block; the during operation, when the locating piece moves to rotor plate department, the briquetting that hard magnet material made this moment can attract the locating piece, make the locating piece can be fast from the inside roll-off of locating cavity and carry on spacingly to the lock ring under the appeal of briquetting, the locating piece and the briquetting of roll-off adsorb the laminating simultaneously, the briquetting can carry out spacing on the horizontal direction to the locating piece of adsorbing the laminating this moment, reduce its slip on the horizontal direction that leads to under the uncontrollable effect in the periphery, thereby make the locating piece slide to the locating cavity inside lead to its spacing inefficacy to the lock ring, the effectual stability that has strengthened tectorial membrane sand shell mould during operation.
Preferably, a transition groove is arranged at an opening at the top end of the locking groove, and the opening radius of the transition groove is gradually increased from bottom to top; when the locking ring is aligned with the locking groove and inserted and fixed with the locking groove, the positioning block inside the positioning groove pops out of the outer side surface of the locking ring under the action of the inner end spring, at the moment, the positioning block is required to be pressed into the positioning groove firstly so as to facilitate normal work of the locking ring, the transition groove is arranged at the opening at the top end of the locking groove, the outer end of the positioning block popped out of the positioning groove is positioned on the side wall of the transition groove, and the outer end of the positioning block can be pressed into the positioning groove under the pressure of the gradually reduced side wall of the transition groove by setting the opening shape of the transition groove, so that the positioning block on the locking ring is driven to move downwards when the locking rod moves downwards, meanwhile, the outer end of the positioning block can be pressed into the positioning groove under the pressure of the gradually reduced side wall of the transition groove, manual pressing of the positioning block is reduced, and the convenience of the precoated sand shell mold in working is further enhanced.
The invention has the technical effects and advantages that:
1. according to the precoated sand shell mold casting process, the locking rods in the locking modules are used for extruding and fixing the sand supplementing blocks at the top of the precoated sand shell mold, so that the metal mold supporting gland can conveniently and stably lock the sand supplementing blocks at different heights, and the casting quality of the precoated sand shell mold is effectively improved.
2. According to the precoated sand shell mold casting process, the rotating plate is arranged at the bottom end of the side wall of the locking groove, so that the bottom end of the rotating plate can extrude the outer end of the positioning block at the bottom more powerfully, the outer end of the positioning block is stably and conveniently extruded into the positioning groove under the pressure of the rotating plate, and the convenience in precoated sand shell mold casting is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a diagram of the process steps of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a side view of the present invention;
FIG. 5 is a schematic view of the metal die-holding cover of FIG. 4 in an opened state;
FIG. 6 is an enlarged view at B in FIG. 5;
in the figure: the device comprises a precoated sand shell mold 1, a metal supporting mold base 2, a metal supporting mold gland 3, a sand supplementing block 4, a sprue 41, a following-shaped cavity 42, a locking module 5, a supporting plate 51, a locking ring 52, a locking rod 53, a locking groove 54, a limiting groove 55, a limiting block 56, a positioning groove 57, a positioning block 58, an extrusion groove 6, a rotating plate 61, a pressing block 62, a pressing rod 63, a pressing plate 64, a traction rope 65 and a transition groove 7.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-6, the process for casting the precoated sand shell mold comprises the following steps:
s1: processing a set of precoated sand shell mold 1 hot core box according to the shape of a product to be cast, processing the precoated sand shell mold 1 by utilizing the precoated sand shell mold 1 hot core box to manufacture the precoated sand shell mold 1, and designing a metal supporting mold base 2 and a metal supporting mold gland 3 in a metal supporting mold according to the external shape of the precoated sand shell mold 1; by arranging the metal supporting die base 2 and the metal supporting die gland 3 which are matched with the shape of the precoated sand shell mold 1, the designed base and gland can be effectively matched and work with the precoated sand shell mold 1;
s2: after the metal supporting die pressing cover 3 is designed in S1, a group of locking modules 5 are arranged on the periphery of the metal supporting die pressing cover 3, and the processed metal supporting die base 2 and the metal supporting die pressing cover 3 are hinged in place through a rotating hinge; the metal supporting die base 2 and the metal supporting die pressing cover 3 are hinged through a rotating hinge, so that the metal supporting die pressing cover 3 can be conveniently assembled and disassembled when the precoated sand shell mold 1 is fixed;
s3: after the rear metal supporting die base 2 and the metal supporting die gland 3 are connected in the S2, the combined precoated sand shell mold 1 is arranged in a mold cavity corresponding to the metal supporting die base 2, the corresponding sand supplementing block 4 is installed after the mold cavity is filled with the sand, and the metal supporting die glands 3 on the two sides are closed; the combined precoated sand shell mold 1 is arranged in a mold cavity corresponding to the metal support mold base 2, and is covered and fixed through the metal support mold gland 3, so that the surface quality of a casting can be effectively stabilized, and the dimensional precision grade of the casting can be improved;
s4: after the metal supporting die pressing covers 3 on the two sides are folded in S3, the sand supplementing block 4 is locked by using the locking rod 53 in the locking module 5, the pouring gate 41 cup is arranged at the pouring gate 41 of the sand supplementing block 4, and then casting molding is carried out; through the arranged locking module 5, the metal supporting die gland 3 can conveniently and stably lock the sand supplement block 4, so that the casting quality of the precoated sand shell mold 1 is effectively improved;
the bottom end of the precoated sand shell mold 1 used in the step S1 is provided with a metal supporting mold base 2 designed according to the external shape of the precoated sand shell mold, two ends of the top surface of the metal supporting mold base 2 are symmetrically hinged with metal supporting mold press covers 3, and the interior of each metal supporting mold press cover 3 is designed into a shape matched with the external shape of the precoated sand shell mold 1; a sand supplement block 4 is arranged at the top of the precoated sand shell mold 1, and a sprue 41 is arranged on the top surface of the sand supplement block 4; a group of conformal cavities 42 matched with the shape of the precoated sand shell mold 1 are symmetrically arranged at two ends of the top surface of the metal supporting mold gland 3, the top surfaces of the following cavities 42 are all provided with locking modules 5, each locking module 5 comprises a support plate 51, a locking ring 52 and a locking rod 53, the supporting plate 51 is arranged on the top surface of the following-shaped cavity 42 in an L shape, a locking groove 54 is arranged on the top surface of the supporting plate 51, a limit groove 55 is arranged on the side wall of one end of the locking groove 54, a locking ring 52 is arranged in the locking groove 54, a limit block 56 matched with the locking ring 52 is arranged at the position corresponding to the limit groove 55, the middle part of the locking ring 52 is in threaded connection with a locking rod 53, two ends of the bottom surface of the locking ring 52 are symmetrically provided with positioning grooves 57, a positioning block 58 is connected to the inside of the positioning groove 57 in a sliding manner, and the inner end of the positioning block 58 is connected with the inner end surface of the positioning groove 57 through a spring; when the precoated sand shell mold 1 works, when the metal supporting mold gland 3 is covered and the sand supplementing block 4 at the top of the precoated sand shell mold 1 is fixed, the integral fixing structure arranged at the end part of the rotating metal supporting mold gland 3 cannot conveniently and effectively fix the top surface of the sand supplementing block 4, and meanwhile, the fixing structure is not convenient to disassemble, and when the precoated sand blocks 4 with different heights are faced, different metal supporting mold glands 3 need to be replaced for fixing, so that not only is the time wasted, but also the increase of the casting cost is caused, and the casting quality and the machining precision of the precoated sand shell mold 1 are influenced; when the metal supporting mold pressing cover 3 of the invention works, when the sand supplement block 4 at the top of the precoated sand shell mold 1 is fixed, firstly, the metal supporting mold pressing cover 3 is covered on the precoated sand shell mold 1, at the moment, the supporting plate 51 moves to the top end of the sand supplement block 4, then the limit block 56 at the side surface of the locking ring 52 is aligned with the limit groove 55 on the quasi-locking groove 54, after the positioning blocks 58 at the two sides of the bottom end of the locking ring 52 are pressed into the positioning groove 57, the whole locking ring 52 is inserted into the locking groove 54, when the positioning block 58 moves to the opening at the bottom end of the locking ring 52, at the moment, the positioning block 58 is popped out from the inside of the positioning groove 57 under the action of the inner end spring and is positioned at the bottom end of the supporting plate 51 at one side of the locking groove 54, at the moment, the positioning block 58 positioned between the bottom end of the supporting plate 51 and the positioning groove 57 can effectively limit the axial movement of the locking ring 52, and at the moment, the limit block 56 positioned in the limiting groove 55 can limit the radial rotation of the locking ring 52, at this moment, the locking rod 53 in threaded connection inside the locking ring 52 is screwed, so that the sand supplement blocks 4 with different heights at the bottom end are extruded and fixed when the bottom end of the locking rod 53 moves downwards, the using effects of the metal mold supporting gland 3 and the sand supplement blocks 4 are effectively increased, and the casting quality and the machining precision of the precoated sand shell mold 1 are further enhanced.
As an embodiment of the present invention, a pressing groove 6 is provided at a position corresponding to the positioning groove 57 at the bottom end of the side wall of the locking groove 54, and one end of the pressing groove 6 close to the positioning groove 57 is connected with a rotating plate 61 through a torsion spring; the during operation, when tectorial membrane sand shell mould 1 accomplishes the casting and adds man-hour, make to change board 61 bottom and carry out more powerful extrusion to the locating piece 58 outer end of bottom this moment through rotating board 61, make locating piece 58 outer end advance inside positioning groove 57 by stable convenient extrusion under the pressure of commentaries on classics board 61, thereby make to slide to locating piece 58 inside positioning groove 57 no longer spacing to the ascending motion of locking ring 52 axial, make check lock lever 53 drive locking ring 52 from the inside roll-off of locking groove 54 through applying the pulling force to check lock lever 53 this moment, check lock lever 53 bottom is no longer extrudeed fixedly to mend sand piece 4 simultaneously, make check lock lever 53 can convenient and fast carry out work, thereby convenience when having strengthened tectorial membrane sand shell mould 1 casting.
As an embodiment of the present invention, the bottom end of the rotating plate 61 is connected with a pressing block 62, the bottom surface of the pressing block 62 is connected with an arc-shaped pressing rod 63, and the other end of the pressing rod 63 is connected with a pressing plate 64; during operation, the rotating plate 61 is rotated to drive the pressing rod 63 connected to the pressing block 62 to rotate synchronously with the pressing plate 64, so that the pressing plate 64 can move to a position flush with the outer end face of the positioning block 58 and extrude the outer end face of the positioning block 58, the pressing plate 64 arranged at the moment can apply horizontal acting force to the outer end face of the positioning block 58 and enable the outer end face of the positioning block 58 to slide into the positioning cavity easily, and when the positioning block 58 is completely extruded into the positioning groove 57, the pressing plate 64 rotates to a position between the opening of the positioning groove 57 and the side wall of the locking ring 52 on one side of the positioning groove 57, when the positioning block 58 is always positioned in the positioning groove 57 and the locking ring 52 is conveniently and smoothly pulled out from the inside of the locking groove 54, the blocking caused by the movement of the pressing plate 64 which is clamped into the positioning groove 57 and the locking ring 52 is also reduced, and the stability and the effectiveness during casting of the precoated sand shell mold 1 are effectively enhanced.
In one embodiment of the present invention, the bottom surface of the rotating plate 61 is provided with an inclined surface inclined upward, the upper surface of the positioning block 58 is provided with an inclined surface parallel to the bottom surface of the rotating plate 61, and a pulling rope 65 is connected between the two rotating plates 61; when the rotary plate locking device works, the bottom surface of the rotary plate 61 and the upper surface of the positioning block 58 are arranged to be mutually parallel and inclined, so that the positioning block 58 can move to the bottom end of the rotary plate 61 more easily and is tightly attached to the bottom end of the rotary plate 61, the limiting of the positioning block 58 on the locking ring 52 in the axial direction is enhanced, and the positioning block 58 can be more easily extruded into the positioning groove 57 when the bottom surface of the rotary plate 61 which is arranged in an inclined manner rotates; simultaneously through the pulling rope 65 that the pulling is connected between the commentaries on classics board 61 for the haulage rope 65 atress drives the commentaries on classics board 61 synchronous rotation at both ends, and then makes synchronous pivoted change board 61 can be simultaneously with locating piece 58 extrusion inside advancing constant head tank 57, further strengthened the convenience of tectorial membrane sand shell mould 1 during operation.
As an embodiment of the present invention, the pressing block 62 is made of a hard magnet material, and the pressing block 62 can adsorb the positioning block 58; the during operation, when locating piece 58 moved to rotor 61 department, briquetting 62 that hard magnet material made this moment can attract locating piece 58, make locating piece 58 can be fast from the inside roll-off of locating cavity and spacing to lock ring 52 under briquetting 62's appeal, locating piece 58 and the laminating of briquetting 62 absorption of roll-off simultaneously, briquetting 62 can carry out spacing on the horizontal direction to the locating piece 58 of adsorbing the laminating this moment, reduce its horizontal direction ascending slip that leads to under the uncontrollable effect in the periphery, thereby make locating piece 58 slide to the locating cavity inside lead to its spacing inefficacy to lock ring 52, the effectual stability that has strengthened tectorial membrane sand shell type 1 during operation.
As an embodiment of the invention, a transition groove 7 is arranged at the opening of the top end of the locking groove 54, and the opening radius of the transition groove 7 is gradually increased from bottom to top; in operation, when the locking ring 52 is inserted into and fixed with the locking groove 54 in alignment with the locking groove, the positioning block 58 inside the positioning groove 57 is ejected out of the outer side surface of the locking ring 52 under the action of the inner end spring, at this time, the positioning block 58 needs to be pressed into the positioning groove 57 first to facilitate the normal operation of the locking ring 52, and by providing the transition groove 7 at the opening at the top end of the locking groove 54, the outer end of the positioning block 58 ejected from the inside of the positioning groove 57 is positioned on the side wall of the transition groove 7, and by setting the opening shape of the transition groove 7, the locking rod 53 moves downwards to drive the positioning block 58 on the locking ring 52 downwards on the side wall of the transition groove 7, meanwhile, the outer end of the positioning block 58 can be extruded into the positioning groove 57 under the pressure of the side wall of the gradually reduced transition groove 7, manual pressing of the positioning block 58 by manpower is reduced, and convenience in working of the precoated sand shell mold 1 is further enhanced.
When the sand-compensating block 4 at the top of the precoated sand shell mold 1 is fixed, firstly, the metal mold supporting gland 3 is covered on the precoated sand shell mold 1, then the supporting plate 51 moves to the top end of the sand-compensating block 4, then the limit blocks 56 at the side surfaces of the locking ring 52 are aligned with the limit grooves 55 on the quasi-locking groove 54, after the positioning blocks 58 at the two sides of the bottom end of the locking ring 52 are pressed into the positioning grooves 57, the whole locking ring 52 is inserted into the locking groove 54, when the positioning block 58 moves to the opening at the bottom end of the locking ring 52, the positioning block 58 is ejected out from the inside of the positioning groove 57 under the action of the inner end spring and is positioned at the bottom end of the supporting plate 51 at one side of the locking groove 54, at this time, the positioning block 58 positioned between the bottom end of the supporting plate 51 and the positioning groove 57 can effectively limit the axial movement of the locking ring 52, and at this time, the limit block 56 clamped in the limit groove 55 can limit the radial rotation of the locking ring 52, at this moment, the locking rod 53 in threaded connection inside the locking ring 52 is screwed, so that the sand supplement blocks 4 with different heights at the bottom end are extruded and fixed when the bottom end of the locking rod 53 moves downwards, the using effects of the metal mold supporting gland 3 and the sand supplement blocks 4 are effectively increased, and the casting quality and the machining precision of the precoated sand shell mold 1 are further enhanced.
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 described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The casting process of the precoated sand shell mold is characterized by comprising the following steps:
s1: processing a set of precoated sand shell mold (1) hot core box according to the shape of a product to be cast, processing the precoated sand shell mold (1) by utilizing the hot core box of the precoated sand shell mold (1) to manufacture the precoated sand shell mold (1), and designing a metal supporting mold base (2) and a metal supporting mold pressing cover (3) in a metal supporting mold according to the external shape of the precoated sand shell mold (1);
s2: after the metal supporting die pressing cover (3) is designed in S1, a group of locking modules (5) are arranged on the periphery of the metal supporting die pressing cover (3), and the processed metal supporting die base (2) and the metal supporting die pressing cover (3) are hinged in place through a rotating hinge;
s3: after the rear metal supporting die base (2) and the metal supporting die gland (3) are connected in S2, the combined precoated sand shell mold (1) is arranged in a corresponding mold cavity of the metal supporting die base (2), and then a corresponding sand supplementing block (4) is arranged after the precoated sand shell mold is filled with the precoated sand shell mold, and the metal supporting die glands (3) on the two sides are closed;
s4: after the metal supporting die pressing covers (3) on two sides are folded in S3, the sand supplementing block (4) is locked by using a locking rod (53) in a locking module (5), a pouring gate (41) cup is arranged at a pouring gate (41) of the sand supplementing block (4), and then casting molding is carried out;
the bottom end of the precoated sand shell mold (1) used in S1 is provided with a metal supporting mold base (2) designed according to the external shape of the precoated sand shell mold, two ends of the top surface of the metal supporting mold base (2) are symmetrically hinged with metal supporting mold pressing covers (3), and the interior of each metal supporting mold pressing cover (3) is designed into a shape matched with the external shape of the precoated sand shell mold (1); a sand supplement block (4) is arranged at the top of the precoated sand shell mold (1), and a sprue (41) is arranged on the top surface of the sand supplement block (4); a group of following-shaped cavities (42) matched with the precoated sand shell mold (1) in shape are symmetrically arranged at two ends of the top surface of the metal supporting mold gland (3), locking modules (5) are arranged on the top surfaces of the following-shaped cavities (42), each locking module (5) comprises a supporting plate (51), a locking ring (52) and a locking rod (53), the supporting plates (51) are arranged on the top surfaces of the following-shaped cavities (42) in an L shape, a locking groove (54) is arranged on the top surface of the supporting plate (51), a limiting groove (55) is arranged on the side wall at one end of the locking groove (54), a locking ring (52) is arranged in the locking groove (54), a limiting block (56) matched with the locking ring (52) is arranged at a position corresponding to the limiting groove (55), the locking rod (53) is in threaded connection with the middle of the locking ring (52), and positioning grooves (57) are symmetrically arranged at two ends of the bottom surface of the locking ring (52), a positioning block (58) is connected inside the positioning groove (57) in a sliding manner, and the inner end of the positioning block (58) is connected with the inner end surface of the positioning groove (57) through a spring;
a squeezing groove (6) is formed in the position, corresponding to the positioning groove (57), of the bottom end of the side wall of the locking groove (54), and one end, close to the positioning groove (57), of the squeezing groove (6) is connected with a rotating plate (61) through a torsion spring;
the bottom end of the rotating plate (61) is connected with a pressing block (62), the bottom surface of the pressing block (62) is connected with an arc-shaped pressing rod (63), and the other end of the pressing rod (63) is connected with a pressing plate (64);
the bottom surfaces of the rotating plates (61) are arranged into inclined surfaces which are inclined upwards, the upper surfaces of the positioning blocks (58) are arranged into inclined shapes which are parallel to the bottom surfaces of the rotating plates (61), and a traction rope (65) is connected between the two rotating plates (61);
the pressing block (62) is made of hard magnetic iron materials, and the pressing block (62) can adsorb the positioning block (58);
a transition groove (7) is arranged at an opening at the top end of the locking groove (54), and the opening radius of the transition groove (7) is gradually increased from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309426.4A CN110976764B (en) | 2019-12-18 | 2019-12-18 | Precoated sand shell mold casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309426.4A CN110976764B (en) | 2019-12-18 | 2019-12-18 | Precoated sand shell mold casting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110976764A CN110976764A (en) | 2020-04-10 |
| CN110976764B true CN110976764B (en) | 2021-10-29 |
Family
ID=70095630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911309426.4A Active CN110976764B (en) | 2019-12-18 | 2019-12-18 | Precoated sand shell mold casting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110976764B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112471893B (en) * | 2020-12-10 | 2021-08-24 | 浙江炊大王炊具有限公司 | Anti-overflow pot and using method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB678463A (en) * | 1950-03-21 | 1952-09-03 | Sidney Joseph Lindsell | Improvements in lay figures, busts, forms and the like |
| CN202804095U (en) * | 2012-09-11 | 2013-03-20 | 安徽江淮汽车股份有限公司 | Casting mud core assembly fixture chuck with adjustable height |
| CN203599470U (en) * | 2013-10-16 | 2014-05-21 | 慈溪市汇丽机电有限公司 | Withdrawing device for loose block inside sand mold and sand core |
| CN206519544U (en) * | 2017-01-10 | 2017-09-26 | 广州铸星机械有限公司 | A kind of gear top board height adjustment mechanism |
| CN107081406B (en) * | 2017-04-13 | 2018-09-18 | 扬州广润机械有限公司 | A kind of profile-followed metal support mould resin-coated sand shell mould casting technique |
| CN106825418B (en) * | 2017-04-13 | 2018-09-25 | 扬州广润机械有限公司 | A kind of profile-followed metal support mould resin-coated sand shell mould casting mould component |
| CN206921945U (en) * | 2017-07-05 | 2018-01-23 | 江西佳博力新能源科技有限公司 | A kind of combined Li ion cells |
| CN207501305U (en) * | 2017-10-02 | 2018-06-15 | 周友明 | A kind of mounting bracket convenient for being dismounted with compressor of air conditioner |
| CN109112990B (en) * | 2018-09-21 | 2020-09-15 | 绍兴市卓诚新材料有限公司 | Be used for road and bridge width restriction device |
-
2019
- 2019-12-18 CN CN201911309426.4A patent/CN110976764B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110976764A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110328348B (en) | Production method of new energy automobile motor aluminum shell | |
| CN210820564U (en) | Multi-point injection molding device for suspension floor | |
| CN110976764B (en) | Precoated sand shell mold casting process | |
| WO1996037037A1 (en) | Apparatus for casting conductor of rotor of induction motor | |
| CN209240364U (en) | A kind of vertical double coloured plastic injection machine | |
| CN103433418B (en) | A kind of spiral bevel gear finish forge device and method | |
| CN107297477A (en) | Rotor pressurized centrifugan pouring device and casting method | |
| CN209407360U (en) | A kind of foundry sand case apparatus | |
| CN208978201U (en) | A kind of plastic conduit internal screw thread product pickoff | |
| CN211304735U (en) | Tandem cylinder vertical extrusion casting machine | |
| CN107020726A (en) | Preceding round brush mould | |
| CN218517668U (en) | Automobile engine shell casting mould | |
| CN207128195U (en) | New type auto demoulding injection mold | |
| CN109968605A (en) | A kind of conveniently stripped injection mold | |
| CN214867085U (en) | Flange plate casting mold | |
| CN206316325U (en) | A kind of thin-section casting die drawing device | |
| CN205684682U (en) | cold-chamber die casting machine | |
| KR102007441B1 (en) | Injection molds for manufacturing tube cab with screw undercut | |
| CN209666179U (en) | A kind of injection mold for internal screw thread demoulding | |
| CN210651639U (en) | Quick demoulding mould | |
| CN112549287A (en) | Telegraph pole production method | |
| CN207044626U (en) | The cooling system of preceding round brush mould | |
| CN217912782U (en) | Die casting die with two-linkage inclined inner core pulling function | |
| CN219805359U (en) | Die casting die for metal parts | |
| CN109531882A (en) | A kind of synthetic resin watt integrated molding production mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211013 Address after: 215500 No.2 Yunshen Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province Applicant after: Suzhou Zhongtuo Internet Information Technology Co.,Ltd. Address before: 233000 room 406, 4th floor, No.2 central taxation office, No.78 Yingbin Road, Hongye street, bengshan District, Bengbu City, Anhui Province Applicant before: Zhou Weihua |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230704 Address after: 332000 Wuning Industrial Park, Jiujiang City, Jiangxi Province Patentee after: Jiangxi Keming Intelligent Machinery Technology Co.,Ltd. Address before: 215500 No.2 Yunshen Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province Patentee before: Suzhou Zhongtuo Internet Information Technology Co.,Ltd. |