CN114535513B - Automatic slurry dipping and sand spraying system for sand shell preparation process - Google Patents
Automatic slurry dipping and sand spraying system for sand shell preparation process Download PDFInfo
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- CN114535513B CN114535513B CN202210000777.2A CN202210000777A CN114535513B CN 114535513 B CN114535513 B CN 114535513B CN 202210000777 A CN202210000777 A CN 202210000777A CN 114535513 B CN114535513 B CN 114535513B
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- sand
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- dipping
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- 239000004576 sand Substances 0.000 title claims abstract description 77
- 239000002002 slurry Substances 0.000 title claims abstract description 46
- 238000005507 spraying Methods 0.000 title claims abstract description 34
- 238000007598 dipping method Methods 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000007605 air drying Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 239000003110 molding sand Substances 0.000 abstract description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005266 casting Methods 0.000 abstract description 5
- 238000010304 firing Methods 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 64
- 239000001993 wax Substances 0.000 description 58
- 238000000034 method Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The invention belongs to the technical field of wax loss casting, and particularly relates to an automatic slurry dipping and sand spraying system for a sand shell preparation process. The invention has high practicality, the wax blank can be wrapped by the molding sand for multiple times through the operations of dipping slurry, spraying sand and air drying, the connection strength between the molding sand and the wax blank can be higher, the loose condition of the molding sand can not occur, the thickness of the sand shell wrapped on the wax blank can be ensured to be more uniform, the cracking condition can not occur in the later firing and casting processes, the production cost is saved, the uninterrupted sand shell production can be carried out on multiple wax blanks at the same time, the production efficiency is improved while the strength of the sand shell is ensured, and the waste of resources can be reduced and larger benefits are brought.
Description
Technical Field
The invention relates to the technical field of lost wax casting, in particular to an automatic slurry dipping and sand spraying system for a sand shell preparation process.
Background
The lost wax method or lost wax casting method is a production process in ancient China. It is still the method used to present the most elaborate details of metal articles, which are often difficult to manufacture due to the very cumbersome design, and the lost wax process allows any metal to fully and faithfully reproduce the appearance of its wax pattern. Therefore, the method is widely used in the fields of sculpture, jewelry processing, dentistry, industrial restoration and the like to date, but the lost wax method has very strict requirements and high cost, but gives the craftsman the exquisite and originality of a finished product as a return, the lost wax method firstly uses wax materials mixed by beeswax, rosin and beef tallow to carve out a product to be cast (wax type), then pours clay on the wax type to clarify the washed slurry, and spills quartz sand, broken plant fibers, sawdust (sawdust residues) and the like. And pouring clay and yellow mud after drying, mixing, clarifying and washing out mud, and then scattering sand. Repeatedly preparing the sand shell outside the wax type shell, and heating the sand shell on fire. The wax melts into a liquid state when heated and runs off from the sand shell. Thereafter, the sand shell is sintered (the sintering temperature is not higher than 800 ℃ generally because the sand shell cannot be vitrified), and molten metal liquid is poured into the sand shell for casting. After cooling, the sand shell is knocked off, and a cast product which is identical to the shape of the wax pattern is obtained.
However, the existing sand shell production process cannot meet the requirement of mass production of sand shells, the efficiency is low, the produced sand shells are easy to produce uneven thickness, and the sand shells are easy to crack in the later firing or casting process, so that the situation that the sand shells cannot be used is caused.
Therefore, we propose an automated slurry dipping and sand showering system for a sand shell manufacturing process to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an automatic slurry dipping and sand spraying system for a sand shell preparation process.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a process for preparing the sand shell comprises the steps of preparing blank, dipping slurry, spraying sand and air drying; the method comprises the following specific steps:
s1, preparing a blank: preparing a wax blank which is completely cooled and shaped;
s2, dipping slurry: uniformly dipping the adhesive slurry on the wax blank, and uniformly rotating the wax blank to remove redundant slurry after dipping the adhesive slurry;
S3, sand spraying: sprinkling molding sand on the wax blank from which the redundant sticky slurry is removed; so that the molding sand wraps the wax blank;
S4, air-drying: drying the wax blank containing the molding sand, accelerating the drying of water in the viscous slurry, and enabling the molding sand to be more firmly wrapped on the surface of the wax blank;
s5, repeating the steps of dipping slurry, spraying sand and air drying four times, and then dipping the wax blank once.
Preferably, in the step S3, during the sand spraying process of the wax blank, the wax blank rotates slowly at a constant speed, so that the molding sand can uniformly wrap the wax blank, and the thickness uniformity of the molding sand layer is ensured.
Preferably, a sensor is arranged in the sand spraying machine in the step S3 and used for starting the sand spraying machine when the induction wax blank enters.
An automatic change and dip in thick liquid drenches sand system for any one of above-mentioned is used for sand shell preparation technology, including thick liquid bucket, air-drying cabinet, drenches sand machine and arm, thick liquid bucket, air-drying cabinet and drenches sand machine and be triangle-shaped and distribute, and the arm is located thick liquid bucket, air-drying cabinet and drenches between the sand machine, fixed mounting has a plurality of clamping jaws that are linear distribution on the arm.
Preferably, the air-drying box comprises a material box, two mounting blocks are fixedly mounted at the top of the material box, the same box cover is fixedly mounted at the top of the two mounting blocks, three exhaust fans are fixedly mounted at the top of the box cover, material inlet and outlet openings are respectively formed in two sides of the box cover, an annular conveying guide rail is fixedly mounted on the inner wall of the top of the box cover, and a plurality of annular distributed hook claws are slidably mounted on the annular conveying guide rail.
Preferably, the same sieve plate is movably arranged between the two mounting blocks, and a box door is arranged on one side of the material box.
Preferably, the fixed slot has all been seted up to one side that two installation pieces are close to each other, the both sides of sieve all are equipped with two buffer gear, and four buffer gear are in the same place with corresponding fixed slot fixed connection respectively.
Preferably, the buffer mechanism comprises a guide plate fixedly connected with the sieve plate, a guide rod is arranged on the guide plate, the guide rod penetrates through the guide plate and is connected with the guide plate in a sliding mode, discs are fixedly installed at the top end and the bottom end of the guide rod, the two discs are fixedly connected with the inner walls of the top and the bottom of the fixed groove respectively, two springs are sleeved on the guide rod in a sliding mode, and two ends of each spring are fixedly connected with the guide plate and the discs respectively.
Preferably, two vibrating machines which are symmetrically distributed are fixedly arranged at the bottom of the sieve plate.
Preferably, the inner walls of the bottoms of the two fixing grooves close to each other are provided with inclined grooves.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention has high practicality, the molding sand can wrap the wax blank for many times through the operations of dipping slurry, spraying sand and air drying, the connection strength between the molding sand and the wax blank is higher, the loose condition of the molding sand can not occur, the thickness of the sand shell wrapped on the wax blank can be ensured to be more uniform, the cracking condition can not occur in the later firing and casting processes, and the production cost is saved.
2. Through the air-drying box, drench sand machine and fixture's cooperation, can carry out incessant sand shell preparation to a plurality of wax base simultaneously, still improve production efficiency when guaranteeing sand shell intensity, can reduce the waste of resource and bring bigger income.
Drawings
FIG. 1 is a schematic diagram of the whole structure of an automatic slurry dipping and sand spraying system according to the present invention;
FIG. 2 is an exploded view of an air drying box in an automated slurry dipping and sand spraying system according to the present invention;
FIG. 3 is a side cross-sectional view of a tank cover in an automated slurry dipping and sand spraying system according to the present invention;
FIG. 4 is a schematic diagram of a partial structure of an automated slurry dipping and sand spraying system according to the present invention;
FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;
Fig. 6 is a flow chart of a process for preparing a sand shell according to the present invention.
In the figure: 1. a pulp barrel; 2. an air drying box; 21. a case cover; 211. a material inlet and a material outlet; 212. an annular conveying guide rail; 213. a hook claw; 22. an exhaust fan; 23. a feed box; 24. a door; 25. a mounting block; 251. a fixing groove; 26. a sieve plate; 27. a buffer mechanism; 271. a guide plate; 272. a guide rod; 273. a disc; 274. a spring; 28. a vibrator; 3. a sand spraying machine; 4. a mechanical arm; 5. clamping jaw.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-5, a process for preparing a sand shell is provided in the present embodiment, which comprises the steps of preparing a blank, dipping slurry, spraying sand, and air-drying; the method comprises the following specific steps:
s1, preparing a blank: preparing a wax blank which is completely cooled and shaped;
s2, dipping slurry: uniformly dipping the adhesive slurry on the wax blank, and uniformly rotating the wax blank to remove redundant slurry after dipping the adhesive slurry;
S3, sand spraying: sprinkling molding sand on the wax blank from which the redundant sticky slurry is removed; so that the molding sand wraps the wax blank;
S4, air-drying: drying the wax blank containing the molding sand, accelerating the drying of water in the viscous slurry, and enabling the molding sand to be more firmly wrapped on the surface of the wax blank;
s5, repeating the steps of dipping slurry, spraying sand and air drying four times, and then dipping the wax blank once.
In the step S3, the wax blank is slowly rotated at a constant speed in the sand spraying process, so that the molding sand can uniformly wrap the wax blank, and the thickness uniformity of a sand molding layer is ensured.
And in the step S3, a sensor is arranged in the sand spraying machine and is used for starting the sand spraying machine when the induction wax blank enters.
Example 2
An automatic change and dip in thick liquid and drench sand system for any one of above-mentioned is used for sand shell preparation technology, including thick liquid bucket 1, air-drying cabinet 2, drench sand machine 3 and arm 4, thick liquid bucket 1, air-drying cabinet 2 and drench sand machine 3 and be triangle-shaped and distribute, and arm 4 is located thick liquid bucket 1, air-drying cabinet 2 and drenches between sand machine 3, and fixed mounting has a plurality of clamping jaw 5 that are linear distribution on the arm 4.
Specifically, the plurality of clamping jaws 5 on the mechanical arm 4 clamp the wax blanks formed by cooling, firstly, the mechanical arm 4 drives the wax blanks to be completely immersed in the adhesive slurry in the slurry barrel 1 for a period of time, the adhesive slurry is completely covered on the wax blanks, then the mechanical arm 4 drives the wax blanks to be transferred from the slurry barrel 1 to the adjacent sand spraying machine 3, the mechanical arm 4 drives the wax blanks to rotate slowly at a constant speed in synchronization with the sand spraying machine 3 in the sand spraying machine 3, the molding sand can completely wrap the wax blanks through the connection of the adhesive slurry, then the mechanical arm 4 drives the wax blanks wrapped with the molding sand to be air-dried in the air-drying box 2, so that the moisture in the adhesive slurry is volatilized, the bonding strength between the molding sand and the wax blanks is enhanced, and after four steps of dipping slurry, spraying sand and air drying are repeatedly performed on the wax blanks, the dipping slurry treatment is performed once again, and then the wax blanks are directly air-dried in the air-drying box 2.
Example 3
The air drying box 2 comprises a feed box 23, two mounting blocks 25 are fixedly mounted at the top of the feed box 23, the same box cover 21 is fixedly mounted at the top of the two mounting blocks 25, three exhaust fans 22 are fixedly mounted at the top of the box cover 21, two sides of the box cover 21 are respectively provided with a feeding hole 211, an annular conveying guide rail 212 is fixedly mounted on the inner wall of the top of the box cover 21, and a plurality of annular distributed hook claws 213 are slidably mounted on the annular conveying guide rail 212.
Specifically, the wax billet enters the box cover 21 through the feeding and discharging hole 211 and is hooked on the leftmost hooking claw 213, the plurality of clamping claws 5 on the mechanical arm 4 clamp the wax billet after being dried at the lowest position, and the dried wax billet is transferred into the slurry barrel 1 to be dipped in slurry, so that the wax billet just entering the air drying box 2 can be rotated to the lowest position on the left side of the annular conveying guide rail 212 in the past repeatedly, the wax billet can be air-dried in the air drying box 2 for a period of time, the air-drying effect of the wax billet is ensured, the time is equal to the time of dipping slurry and sand on the wax billet, and the mechanical arm 4 drives the wax billet dipped with sand to enter the air drying box 2 and simultaneously can take out the air-dried wax billet.
The same sieve plate 26 is movably arranged between the two mounting blocks 25, and a box door 24 is arranged on one side of the material box 23.
Specifically, the screen plate 26 can make the molding sand that falls down from the wax base drop into the feeding box 23 entirely, can recycle the molding sand, and the box door 24 can shift the molding sand in the feeding box 23.
The fixing grooves 251 are respectively formed in one side, close to each other, of the two mounting blocks 25, two buffer mechanisms 27 are respectively arranged on two sides of the screen plate 26, and the four buffer mechanisms 27 are respectively and fixedly connected with the corresponding fixing grooves 251.
The buffer mechanism 27 comprises a guide plate 271 fixedly connected with the screen plate 26, a guide rod 272 is arranged on the guide plate 271, the guide rod 272 penetrates through the guide plate 271 and is connected with the guide plate 271 in a sliding manner, round discs 273 are fixedly arranged at the top end and the bottom end of the guide rod 272, the two round discs 273 are fixedly connected with the inner walls at the top and the bottom of the fixed groove 251 respectively, two springs 274 are sleeved on the guide rod 272 in a sliding manner, and two ends of each spring 274 are fixedly connected with the guide plate 271 and the round discs 273 respectively.
Two symmetrically distributed vibrators 28 are fixedly arranged at the bottom of the screen plate 26.
Specifically, the vibrator 28 drives the screen plate 26 to vibrate, so that molding sand on the screen plate 26 can be ensured to completely pass through the screen plate 26 and fall into the feed box 23, the molding sand is conveniently recycled, and the guide plate 271, the guide rod 272 and the two springs 274 are arranged, so that the screen plate 26 can slide up and down, and the speed of the molding sand passing through the screen plate 26 is accelerated.
Inclined grooves are formed in the inner walls of the bottoms of the two adjacent fixing grooves 251;
Specifically, by providing the inclined cut, the molding sand that has entered the fixed groove 251 can automatically slide into the feed box 23, so that the fixed groove 251 is not affected by the accumulation of molding sand and the buffer mechanism 27.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The automatic slurry dipping and sand spraying system is characterized by comprising a slurry barrel (1), an air drying box (2), a sand spraying machine (3) and a mechanical arm (4), wherein the slurry barrel (1), the air drying box (2) and the sand spraying machine (3) are distributed in a triangular shape, the mechanical arm (4) is positioned between the slurry barrel (1), the air drying box (2) and the sand spraying machine (3), and a plurality of clamping claws (5) which are distributed in a linear shape are fixedly arranged on the mechanical arm (4);
The air drying box (2) comprises a box (23), two mounting blocks (25) are fixedly mounted at the top of the box (23), the same box cover (21) is fixedly mounted at the top of the two mounting blocks (25), three exhaust fans (22) are fixedly mounted at the top of the box cover (21), two sides of the box cover (21) are respectively provided with a feeding hole and a discharging hole (211), an annular conveying guide rail (212) is fixedly mounted on the inner wall of the top of the box cover (21), and a plurality of annular hooks (213) are slidably mounted on the annular conveying guide rail (212);
The same sieve plate (26) is movably arranged between the two mounting blocks (25), and a box door (24) is arranged on one side of the feed box (23);
One side of each mounting block (25) close to the other is provided with a fixing groove (251), two sides of each screen plate (26) are provided with two buffer mechanisms (27), and the four buffer mechanisms (27) are fixedly connected with the corresponding fixing grooves (251) respectively;
The buffer mechanism (27) comprises a guide plate (271) fixedly connected with the screen plate (26), a guide rod (272) is arranged on the guide plate (271), the guide rod (272) penetrates through the guide plate (271) and is connected with the guide plate (271) in a sliding mode, discs (273) are fixedly arranged at the top end and the bottom end of the guide rod (272), the two discs (273) are fixedly connected with the top and the bottom inner wall of the fixed groove (251) respectively, two springs (274) are sleeved on the guide rod (272) in a sliding mode, and two ends of each spring (274) are fixedly connected with the guide plate (271) and the discs (273) respectively.
2. An automated slurry dipping and sand spraying system according to claim 1, characterized in that two symmetrically distributed vibrators (28) are fixedly arranged at the bottom of the screen plate (26).
3. The automatic slurry dipping and sand spraying system according to claim 1, wherein the inner walls of the bottoms of the two fixing grooves (251) at one side close to each other are provided with inclined grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210000777.2A CN114535513B (en) | 2022-01-04 | Automatic slurry dipping and sand spraying system for sand shell preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210000777.2A CN114535513B (en) | 2022-01-04 | Automatic slurry dipping and sand spraying system for sand shell preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114535513A CN114535513A (en) | 2022-05-27 |
| CN114535513B true CN114535513B (en) | 2024-06-04 |
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