CN112276020A

CN112276020A - Sand core forming device for casting

Info

Publication number: CN112276020A
Application number: CN202011283988.9A
Authority: CN
Inventors: 郭凌峰
Original assignee: Hanshan Gangjianfeng Foundry General Partnership
Current assignee: Hanshan Gangjianfeng Foundry General Partnership
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-01-29

Abstract

The invention discloses a sand core forming device for casting, which belongs to the technical field of casting and comprises a conveying table, wherein the top of the conveying table is slidably connected with a sand storage box, the side wall of the sand storage box is fixedly connected with a blanking sand hopper, the top of the conveying table is rotatably connected with a switching pressing shaft, the side wall of the switching pressing shaft is fixedly connected with a plurality of groups of material pressing sand frames, the bottom of each material pressing sand frame is respectively slidably connected with a thin-layer material pressing plate, a middle-layer material pressing plate and a top-layer material pressing plate, a conveying chassis is arranged at the top of the conveying table, the sand box is arranged at the top of the conveying chassis, and the blanking sand hopper is positioned right above the sand box.

Description

Sand core forming device for casting

Technical Field

The invention relates to the technical field of casting, in particular to a sand core forming device for casting.

Background

Sand casting is a casting method for producing castings in sand molds, and because the molding materials used for sand casting are cheap and easy to obtain, the casting mold is simple and convenient to manufacture, and can adapt to single-piece production, batch production and mass production of castings, the sand casting is a basic process in casting production for a long time. An indispensable process is the sand compaction to the molding sand in the sand mould casting, because make a mould in the sand is put into to the mould in the manufacture process, adopt artifical sand-filling and compaction or single mechanical sand-filling compaction at present mostly, because the molding sand does not fill up or not the compaction can lead to the foundry goods damage shortage or the uneven surface appears, influences the quality requirement of foundry goods, and efficiency is lower, has certain weak point.

Based on the above, the invention designs a sand core forming device for casting to solve the problems.

Disclosure of Invention

The invention aims to provide a sand core forming device for casting, which aims to solve the problems that the manual sand filling and compaction or single mechanical sand filling and compaction in the background technology cause the damage shortage of castings or the uneven surface of the castings due to the unfilled or uncompacted molding sand, the quality requirements of the castings are influenced, the efficiency is low, and certain defects exist.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a sand core forming device for casting, includes the conveying platform, conveying platform top sliding connection has the storage sand case, storage sand case lateral wall fixedly connected with blanking sand fill, conveying platform top rotates and is connected with the switching last item, it has the multiunit to press the material sand frame to switch the last item lateral wall fixed even, press material sand frame bottom sliding connection respectively have thin layer to press flitch, middle level to press flitch and top layer to press the flitch, the conveying chassis has been placed at conveying platform top, the sand case has been placed at conveying chassis top, blanking sand fill is located directly over the sand case.

Preferably, the conveying table inner wall has been seted up the installation way, the installation way internal rotation is connected with a set of transfer roller, transfer roller outer wall cover has the driving band, driving band outer wall fixedly connected with drive block.

Preferably, the top and the bottom of the mounting channel are both provided with a matching through groove, and the driving block is located in the matching through groove and is in sliding fit with the matching through groove.

Preferably, the top of the conveying table is fixedly connected with a shakeout frame, the bottom of the sand storage box is fixedly connected with a support rod, the support rod is positioned in the shakeout frame and is in sliding fit with the shakeout frame, an even screw rod is rotatably connected in the middle of the shakeout frame, and the even screw rod penetrates through the support rod to be in threaded connection with the support rod.

Preferably, the side wall of the sand storage box is fixedly connected with a bottom supporting plate, the end part of the bottom supporting plate is fixedly connected with a blanking sand hopper, and the middle of the blanking sand hopper is fixedly connected with an intermediate screen.

Preferably, the side wall of the sand storage box is communicated with an upper layer pipe and a lower layer pipe, the upper layer pipe and the lower layer pipe are communicated with the blanking sand hopper and are respectively positioned above and below the middle screen, a group of screen rollers are rotatably connected in the middle of the blanking sand hopper, and the side wall of each screen roller is fixedly connected with bristles and is positioned above the middle screen.

Preferably, the top of the material pressing sand frame is fixedly connected with a group of material pressing cylinders, the movable ends of the material pressing cylinders are fixedly connected with a thin-layer material pressing plate, a middle-layer material pressing plate and a top-layer material pressing plate respectively, and the side wall of the top-layer material pressing plate is rotatably connected with a scraping assembly.

Preferably, scrape the material subassembly including seting up the mount table at top layer pressure flitch lateral wall, the mount table lateral wall rotates through the torsional spring axle to be connected with scrapes the material curb plate, scrape and rotate between the material curb plate and be connected with the nip roll and fixedly connected with scrapes the flitch.

Preferably, the even fixedly connected with multiunit flexible depression bar in thin layer pressure flitch bottom, the equal fixedly connected with of flexible depression bar tip presses the material square slab, the material slide is pressed to the middle level pressure flitch inside wall has been seted up, sliding connection has the square strip clamp plate in the middle of pressing the material slide, it is connected with reciprocal pressure material lead screw to press the material to rotate in the middle of the material slide, reciprocal pressure material lead screw passes square strip clamp plate and cooperates with it, top layer pressure flitch bottom fixedly connected with presses the material boss.

Preferably, a storage battery is fixedly installed in the middle of the conveying chassis, a central electromagnetic plate and four-side electromagnetic plates are fixedly connected to the top of the conveying chassis, and the storage battery is electrically connected with the central electromagnetic plate and the four-side electromagnetic plates.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the matching of the thin-layer pressure plate, the middle-layer pressure plate, the top-layer pressure plate and the blanking sand hopper without manual sand filling, sand filling by adopting a fine screen, fitting compaction, middle sand filling, repeated plate compaction and finally capping compaction and strickling processes are realized at different stages to manufacture the sand mold, so that the sand mold is fine and smooth, the interior is compact, the sand filling efficiency is high, no manual work is required, and the casting effect is favorably improved.

2. The central electromagnetic plate and the four-side electromagnetic plates on the conveying chassis are enabled to generate magnetism to magnetically attract the mold and the sand box on the transmission chassis, and meanwhile, the positions of the mold and the sand box are fixed, so that the mold and the sand box cannot be moved easily, the relative positions of the mold and the sand box are stable, subsequent sand filling is facilitated, demolding can be performed easily, and mold turning and demolding are facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic rear view structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is a schematic top view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-conveying table, 2-sand storage box, 3-blanking sand hopper, 4-switching press shaft, 5-pressing sand frame, 6-thin-layer pressing plate, 7-middle-layer pressing plate, 8-top-layer pressing plate, 9-conveying chassis, 10-sand box, 11-installation channel, 12-conveying roller, 13-driving belt, 14-driving block, 15-matching through groove, 16-sand falling frame, 17-supporting rod, 18-uniform screw, 19-bottom supporting plate, 20-middle screen, 21-upper-layer pipe, 22-lower-layer pipe, 23-screen roller, 24-brush hair, 25-pressing cylinder, 26-scraping side plate, 27-pressing roller, 28-scraping plate, 29-telescopic pressing rod, 30-pressing square plate, 31-pressing slideway, 32-square strip pressing plate, 33-pressing boss, 34-central electromagnetic plate and 35-four-side electromagnetic plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides a sand core forming device for casting, including

conveying platform

1, 1 top sliding connection of conveying platform has

storage sand box

2, 2 lateral wall fixedly connected with blanking sand hoppers 3 of storage sand box, 1 top of conveying platform is rotated and is connected with switching

last item

4, 4 lateral walls of switching last item are fixed to be linked there is the multiunit to press material sand frame 5, press material sand frame 5 bottom sliding connection respectively to have thin layer to press flitch 6, middle level is pressed flitch 7 and top layer to press flitch 8, conveying chassis 9 has been placed at 1 top of conveying platform, sand box 10 has been placed at conveying chassis 9 top, blanking sand hoppers 3 are located directly over the sand box 10.

Wherein, the installation way 11 has been seted up to 1 inner wall of conveying platform, and 11 internal rotations in installation way are connected with a set of transfer roller 12, and the outer wall cover of transfer roller 12 has driving band 13, and driving band 13 outer wall fixedly connected with drive block 14. The top and the bottom of the mounting channel 11 are both provided with a matching through groove 15, and the driving block 14 is located in the matching through groove 15 and is in sliding fit with the matching through groove.

Wherein, conveying table 1 top fixedly connected with shakeout frame 16, sand storage box 2 bottom fixedly connected with bracing piece 17, bracing piece 17 is located the sliding fit with it in shakeout frame 16, and the centre of shakeout frame 16 rotates and is connected with even screw rod 18, and even screw rod 18 passes bracing piece 17 threaded connection with it. The side wall of the sand storage box 2 is fixedly connected with a bottom supporting plate 19, the end part of the bottom supporting plate 19 is fixedly connected with a blanking sand hopper 3, and the middle of the blanking sand hopper 3 is fixedly connected with an intermediate screen 20. The side wall of the sand storage box 2 is communicated with an upper layer pipe 21 and a lower layer pipe 22, the upper layer pipe 21 and the lower layer pipe 22 are communicated with the blanking sand hopper 3 and are respectively positioned above and below the middle screen mesh 20, a group of screen mesh rollers 23 are rotatably connected in the middle of the blanking sand hopper 3, and the side wall of each screen mesh roller 23 is fixedly connected with bristles 24 and is positioned above the middle screen mesh 20.

Wherein, press the equal fixedly connected with a set of air cylinder 25 of pressing in material sand frame 5 top, press the expansion end of air cylinder 25 fixedly connected with thin layer pressure flitch 6, middle level pressure flitch 7 and top layer pressure flitch 8 respectively, 8 lateral walls on top layer pressure flitch rotate and are connected with the scraper subassembly. The scraping component comprises a mounting table arranged on the side wall of the top-layer material pressing plate 8, the side wall of the mounting table is rotatably connected with scraping side plates 26 through a torsion spring shaft, and a material pressing roller 27 and a fixedly connected scraping plate 28 are rotatably connected between the scraping side plates 26. The even fixedly connected with multiunit telescopic pressing rod 29 in thin layer pressure flitch 6 bottom, the equal fixedly connected with of telescopic pressing rod 29 tip presses

material square plate

30, and 7 inside walls of middle level pressure flitch have been seted up and have been pressed material slide 31, and sliding connection has square strip clamp plate 32 in the middle of pressing material slide 31, and the rotation is connected with reciprocal pressure material lead screw in the middle of pressing material slide 31, and reciprocal pressure material lead screw passes square strip clamp plate 32 and cooperates with it, and 8 bottom fixedly connected with of top layer pressure flitch press material boss 33.

Wherein, the middle fixed mounting of conveying chassis 9 has the battery, and conveying chassis 9 top fixedly connected with center electromagnetic plate 34 and four sides electromagnetic plate 35, the battery is connected with center electromagnetic plate 34 and four sides electromagnetic plate 35 electricity.

One specific application of this embodiment is:

according to the invention, the sand box 10 and the mold are placed on the conveying chassis 9, the central electromagnetic plate 34 and the four-side electromagnetic plate 35 are switched on through the switch or remote control operation on the conveying chassis 9, the mold and the sand box 10 are magnetically attracted on the conveying chassis 9 by the electromagnetic plates, and the positions of the mold and the sand box 10 are fixed, so that the mold and the sand box cannot be moved easily, the relative positions of the mold and the sand box 10 are stable, and the subsequent sand filling is convenient.

The conveying roller 12 is communicated and rotates to drive the driving belt 13 and the driving block 14 to move along the matching through groove 15, and the driving block 14 pushes the transmission chassis 9 forwards on the conveying table 1 and moves to the position right below the blanking sand hopper 3; the sand in the sand storage box 2 is conveyed to the upper part of the middle screen 20 through the upper layer pipe 21, the falling of the sand after screening is accelerated under the rotating action of the brush bristles 24 driven by the rotating screen roller 23, and meanwhile, the support rod 17 is driven to reciprocate along the sand falling frame 16 under the action of the uniform screw rod 18, so that the sand can be uniformly distributed in the sand box 10 after the falling of the sand is uniform, the screened sand does not have the phenomenon of agglomeration and the like, and the casting details of the surface layer of the mold can be repeatedly carved clearly; after the sieve reaches the certain degree, switch over pivot 4 through the switch-on and make its rotate will have thin layer to press the material sand frame 5 of flitch 6 to switch over to blanking sand hopper 3 below, press the material cylinder 25 to make its expansion end stretch out through the switch-on correspondence this moment, it moves down to drive thin layer to press flitch 6, make in the flexible depression bar 29 of its below stretches into sand box 10, press the material square plate 30 to act on the sand soil under the inner screen, with its compaction, flexible depression bar 29 is flexible of different degrees according to the shape of mould, thereby adapt to the height arch of mould, press the material comparatively comprehensively, and is balanced, be favorable to the sand mould shaping of mould, and comparatively compact, be favorable to improving and cast the effect.

When the surface layer is screened and the material is pressed, the sand is poured out through the lower layer pipe 22, the sand directly falls into the sand box 10 through the blanking sand hopper 3 to a certain degree, the middle layer material pressing plate 7 is switched to the position below the blanking sand hopper 3 through the rotation of the switching pressing shaft 4, the middle layer material pressing plate 7 is moved downwards to a proper height through the material pressing cylinder 25, the square strip pressing plate 32 is positioned in the sand box 10, then the reciprocating material pressing screw rod is connected to enable the square strip pressing plate 3 to move back and forth along the material pressing slide rail 31, and the reciprocating material pressing screw rod is matched with the up and down movement of the material pressing cylinder 25 to complete the actions of repeatedly pressing downwards and moving forwards or backwards so as to press the whole; the sand feeding is rapid, the material pressing is tight, so that the connection between sand and soil is tight, the material pressing is rapid, the sand feeding and the material pressing can be carried out intermittently, and a sand mold with good quality can be obtained.

When the middle layer is filled completely, the middle layer is filled inwards through the lower layer pipe 22, after the middle layer is filled completely, the top layer pressure plate 8 is switched to the position above the sand box 10 through the switching pressure shaft 44, the pressure plate descends through the corresponding pressure air cylinder 25, the pressure boss 33 is pressed on the sandy soil in the sand box 10 to flatten the sandy soil, then the top layer pressure plate rotates to be switched to the position with only the pressure sand frame 5, the pressure roller 27 on the side wall of the top layer pressure plate 8 rolls over the sand box 10, the scraping plate 28 behind the pressure plate rolls over the sand box 10, the redundant sandy soil is scraped off the top of the sand box 10 to form a plane, and the forming of the sand box 10 is completed; need not artifical and pack sand, through thin layer pressure flitch 6, middle level pressure flitch 7 and top layer pressure flitch 8 and the cooperation of blanking sand hopper 3, realize that different stages adopt the fine screen to pack sand, the laminating compaction, middle sand filling, the slabby technique of compaction repeatedly, the final technique preparation sand mould of capping compaction and strickleing off for the sand mould is exquisite, and inside is compacter, packs sand efficiently, need not the manual work, is favorable to improving the casting effect.

The sand box 10 is filled, the sand mould is manufactured, the conveying chassis 9 is continuously conveyed out backwards through the driving belt 13, after the sand mould is conveyed to the mould overturning device, the four-side electromagnetic plate 35 is disconnected, the sand box 10 loses magnetic attraction, then the mould overturning device overturns the conveying chassis 9 to the upper side, the conveying chassis 9 is taken down, meanwhile, other assistance is added under the magnetic attraction effect of the central electromagnetic plate 34, the core mould is taken out simultaneously, the mould overturning device is further completed, the mould can be easily demolded, and the mould overturning and demoulding are convenient.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a sand core forming device for casting which characterized in that: including conveying platform (1), conveying platform (1) top sliding connection has sand storage box (2), sand storage box (2) lateral wall fixedly connected with blanking sand fill (3), conveying platform (1) top is rotated and is connected with switching last item (4), it has multiunit pressure material sand frame (5) to switch last item (4) lateral wall fixed connection, it has thin layer pressure flitch (6), middle level pressure flitch (7) and top layer pressure flitch (8) to press material sand frame (5) bottom sliding connection respectively, conveying platform (1) top has been placed conveying chassis (9), sand box (10) have been placed at conveying chassis (9) top, blanking sand fill (3) are located sand box (10) directly over.

2. The sand core molding device for casting as claimed in claim 1, wherein: conveying platform (1) inner wall has been seted up installation way (11), installation way (11) internal rotation is connected with a set of transfer roller (12), transfer roller (12) outer wall cover has driving band (13), driving band (13) outer wall fixedly connected with drive block (14).

3. The sand core molding device for casting as claimed in claim 1, wherein: the top and the bottom of the mounting channel (11) are both provided with a matching through groove (15), and the driving block (14) is positioned in the matching through groove (15) and is in sliding fit with the matching through groove.

4. The sand core molding device for casting as claimed in claim 1, wherein: conveying platform (1) top fixedly connected with shakeout frame (16), sand storage box (2) bottom fixedly connected with bracing piece (17), bracing piece (17) are located shakeout frame (16) and sliding fit with it, it is connected with even screw rod (18) to rotate in the middle of shakeout frame (16), even screw rod (18) pass bracing piece (17) threaded connection with it.

5. The sand core molding device for casting as claimed in claim 1, wherein: the sand storage box is characterized in that a bottom supporting plate (19) is fixedly connected to the side wall of the sand storage box (2), a blanking sand hopper (3) is fixedly connected to the end portion of the bottom supporting plate (19), and an intermediate screen (20) is fixedly connected to the middle of the blanking sand hopper (3).

6. The sand core molding device for casting as claimed in claim 1, wherein: the side wall of the sand storage box (2) is communicated with an upper layer pipe (21) and a lower layer pipe (22), the upper layer pipe (21) and the lower layer pipe (22) are communicated with the blanking sand hopper (3) and are respectively positioned above and below the middle screen (20), a group of screen rollers (23) are rotatably connected in the middle of the blanking sand hopper (3), and the side wall of each screen roller (23) is fixedly connected with bristles (24) and is positioned above the middle screen (20).

7. The sand core molding device for casting as claimed in claim 1, wherein: the material pressing sand frame is characterized in that the top of the material pressing sand frame (5) is fixedly connected with a group of material pressing cylinders (25), the movable ends of the material pressing cylinders (25) are respectively and fixedly connected with a thin-layer material pressing plate (6), a middle-layer material pressing plate (7) and a top-layer material pressing plate (8), and the side wall of the top-layer material pressing plate (8) is rotatably connected with a scraping assembly.

8. The sand core molding device for casting as claimed in claim 7, wherein: scrape the material subassembly including seting up the mount table at top layer pressure flitch (8) lateral wall, the mount table lateral wall rotates through the torsional spring axle to be connected with scrapes material curb plate (26), scrape and rotate between material curb plate (26) and be connected with nip roll (27) and fixedly connected with and scrape flitch (28).

9. The sand core molding device for casting as claimed in claim 1, wherein: the even fixedly connected with multiunit depression bar (29) of thin layer pressure flitch (6) bottom, the equal fixedly connected with of flexible depression bar (29) tip presses material square plate (30), material slide (31) have been seted up to middle level pressure flitch (7) inside wall, sliding connection has square strip clamp plate (32) in the middle of pressing material slide (31), it is connected with reciprocal pressure material lead screw to press material slide (31) intermediate rotation, reciprocal pressure material lead screw passes square strip clamp plate (32) and cooperates with it, top layer pressure flitch (8) bottom fixedly connected with presses material boss (33).

10. The sand core molding device for casting as claimed in claim 1, wherein: the conveying device is characterized in that a storage battery is fixedly mounted in the middle of the conveying chassis (9), the top of the conveying chassis (9) is fixedly connected with a central electromagnetic plate (34) and four-side electromagnetic plates (35), and the storage battery is electrically connected with the central electromagnetic plate (34) and the four-side electromagnetic plates (35).