CN216176424U - Sand spraying device of full-automatic shell manufacturing production line for precision investment casting - Google Patents

Abstract

The utility model discloses a sand spraying device of a full-automatic shell manufacturing production line for precision investment casting, which comprises a sand spraying mechanism; a sand spraying cylinder is arranged on the base of the sand spraying mechanism and is connected with the output end of the second driving motor, and a sand spraying piece is arranged in a working cavity of the sand spraying cylinder; the sand spraying mechanism can automatically work six groups, so that sand can be uniformly attached to the groups, the efficiency of investment precision casting full-automatic shell manufacturing in a sand spraying process is improved, and the sand spraying quality of the groups is also improved; and the sand spraying part of the sand spraying mechanism can ensure that the sand content is matched when the trees in the group are subjected to sand spraying before and after the process under the condition that the total amount of sand is less in the later period, and can remind workers to supplement the sand in time, so that the safety and high-quality work of the sand spraying process is ensured.

Description

Sand spraying device of full-automatic shell manufacturing production line for precision investment casting

Technical Field

The utility model relates to the technical field of precision investment casting, in particular to a sand spraying device of a full-automatic shell making production line for precision investment casting.

Background

Investment casting, also known as lost wax casting, involves coating a plurality of layers of refractory materials, such as kaolin, alumina, quartz sand, etc., on the surface of a wax pattern, after they are completely hardened and dried, melting the wax pattern to form a shell, then calcining at high temperature to reduce the thermal expansion coefficient of the shell, and finally pouring the shell to obtain a casting, which is also called "investment casting" because the obtained casting has good linear dimensional tolerance, form and position tolerance and surface roughness;

the shell making is the most central content in the investment precision casting process, the importance of the shell making link in the whole investment casting process is next to that of the pouring link, the main influence factors are more, whether the slurry is uniformly coated or not and no bubbles exist, whether the sand spraying height and the sand spraying thickness are uniform or not, and the temperature, humidity and air speed of a drying environment;

in the process of sand pouring of the mold, when sand pouring work is carried out for a period of time, the overall quality of sand initially leaving the sand storage cavity is reduced, and if work is continuously carried out by the initial sand pouring process, the content of sand falling from a sand pouring cylinder in a later period in unit time is changed, so that a product produced by a front-stage process and a product produced by a rear-stage process are different when the tree is poured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the background technology and provides a sand spraying device of a full-automatic shell making production line for investment precision casting.

The purpose of the utility model can be realized by the following technical scheme:

a sand spraying device of a full-automatic shell manufacturing production line for investment precision casting comprises a sand spraying mechanism;

a sand spraying cylinder is arranged on the base of the sand spraying mechanism and is connected with the output end of the second driving motor, and a sand spraying piece is arranged in a working cavity of the sand spraying cylinder;

the inner cylinder body of the sand spraying piece is positioned in the sand spraying cylinder, the inner wall of the inner cylinder body is annularly provided with a plurality of blades, and the blades are movably connected with the inner cylinder body.

As a further scheme of the utility model: the middle part of the inner cylinder body is provided with a connecting ring, and the inner ring of the connecting ring is connected with the blade plate through a movable shaft.

As a further scheme of the utility model: the connecting ring is rotatably connected with the inner cylinder body, and the outer ring of the connecting ring is connected with the inner wall of the sand spraying cylinder through the air cylinder.

As a further scheme of the utility model: set up alarm mechanism in drenching a sand section of thick bamboo, alarm mechanism includes alarm, touch switch, and the alarm is installed on drenching a sand section of thick bamboo's outer wall, is provided with touch switch on the alarm, and touch switch is located and drenches a sand section of thick bamboo's inner wall.

As a further scheme of the utility model: the linkage mechanism is arranged between the alarm mechanism and the sand pouring piece, a first gear is arranged at the bottom of a connecting ring of the linkage mechanism, a sliding strip is arranged on the inner wall of the sand pouring cylinder and is connected with the inner wall of the sand pouring cylinder in a sliding mode, a second gear is arranged on the sliding strip, the first gear is located right above the second gear and is connected with the second gear in a meshing mode, a hollow groove is formed in the sliding strip, a touch block is arranged on one side of the hollow groove, and the touch block is matched with the touch switch.

As a further scheme of the utility model: the slide bar is of an arc structure matched with the sand sprinkling cylinder.

As a further scheme of the utility model: the base is connected with a connecting rod, the other end of the connecting rod is connected with a screen, and the screen is positioned above the inner barrel.

As a further scheme of the utility model: according to drench the content of grit in the sand section of thick bamboo, the stroke of intermittent control cylinder for the cylinder intermittent type formula is the extension motion, drives the go-between and rotates along interior barrel, and the rotation of go-between will drive the vane through the movable shaft and rotate, thereby changes the inclination of vane, makes the vane can bear the grit with initial time looks adaptation weight.

As a further scheme of the utility model: the go-between drives first gear and rotates when rotating, through the meshing effect between first gear and the second gear for the draw runner removes along drenching a sand section of thick bamboo's inner wall, and the touching piece on the draw runner is also along with removing, and when touching piece removed touch switch's position, will make touch switch open, makes the alarm take place the chimes of doom, reminds the staff to drench a sand section of thick bamboo internal replenishment grit.

As a further scheme of the utility model: the method comprises the following steps:

step 1: after being stained with slurry, the mould discs provided with the groups are placed into an inner cylinder body of a sand spraying cylinder through a manipulator, then a second driving motor, a first driving motor and the manipulator are started to rotate, the second driving motor drives the sand spraying cylinder to rotate at the rotation speed of 100-150r/min, the first driving motor 224 drives the groups to rotate at the rotation speed of 60-100r/min, the manipulator drives the mould discs to rotate at the positive and negative rotation speed of 30-50r/min, the sand spraying cylinder rotates to enable the sand to rotate to the top of the cylinder body through a blade plate, then the sand falls under the action of gravity, is filtered through a screen and is sprayed on the groups stained with the slurry, and after the groups are sprayed to 15-30s in the sand spraying cylinder, the second driving motor, the first driving motor and the manipulator are closed to rotate, and the sand spraying process is completed.

The utility model has the beneficial effects that:

(1) the sand spraying mechanism can automatically work on six groups, so that sand can be uniformly attached to the groups, the efficiency of the investment casting full-automatic shell making process in the sand spraying process is improved, and the sand spraying quality of the groups is improved; and the sand spraying part of the sand spraying mechanism can ensure that the angle of the blade plate is changed under the condition that the total amount of sand is less in the later period, so that the sand content of the tree group before and after the process is matched during sand spraying, and workers can be timely reminded to supplement the sand, thereby ensuring the safe and high-quality work of the sand spraying process.

Drawings

The utility model will be further described with reference to the accompanying drawings.

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

FIG. 2 is a schematic structural view of a loading mechanism of the present invention;

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

FIG. 4 is a schematic view of the construction of a die plate according to the present invention;

FIG. 5 is a cross-sectional view of a die plate of the present invention;

FIG. 6 is a schematic structural view showing a connection relationship between a mold plate and a communication cylinder according to the present invention;

FIG. 7 is a schematic view of the structure of the arm driving head according to the present invention;

FIG. 8 is a schematic structural view of a sand pouring mechanism according to the present invention;

FIG. 9 is a schematic structural view of the installation of the sand-sprinkling cylinder in the present invention;

FIG. 10 is a schematic structural view of a sand-sprinkling member according to the present invention;

FIG. 11 is a front view of a sand drenching member according to the present invention;

fig. 12 is an enlarged partial schematic view of the utility model at a of fig. 10.

In the figure: 1. a feeding mechanism; 2. a slurry dipping mechanism; 3. a sand spraying mechanism; 11. a support; 12. a storage plate; 13. a mold plate; 121. a fixing plate; 122. a fixing strip; 123. a ball bearing; 124. a roller; 125. a pin shaft cylinder; 131. mounting a disc; 132. a mounting head; 133. a snap ring; 134. a synchronous pulley; 135. a connecting cylinder; 136. hooping; 137. a connector; 138. a locking block; 139. a limiting block; 1310. a pin hole; 21. a manipulator; 22. an arm driving head; 221. mounting the cylinder; 222. a clamp; 223. a connecting plate; 224. a first drive motor; 225. a limiting shaft; 23. a mixing assembly; 231. a mounting frame; 232. a rotary drum; 233. a squeegee; 31. a base; 32. a feed plate; 33. a baffle plate; 34. a connecting rod; 35. screening a screen; 36. a cavity; 37. a second drive motor; 38. a sand spraying cylinder; 39. spraying a sand part; 391. a leaf plate; 392. a cylinder; 393. an inner cylinder; 394. a first gear; 395. a second gear; 396. a slide bar; 397. a touch block; 398. an alarm; 399. a touch switch; 3910. an empty groove; 3911. and (7) connecting rings.

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. 1-12, the utility model relates to a full-automatic shell-making production line for investment precision casting, which comprises a feeding mechanism 1, a slurry dipping mechanism 2 and a sand sprinkling mechanism 3;

the feeding mechanism 1, the slurry dipping mechanism 2 and the sand sprinkling mechanism 3 are arranged side by side, the slurry dipping mechanism 2 is positioned between the feeding mechanism 1 and the sand sprinkling mechanism 3, the slurry dipping mechanism 2 comprises a mechanical arm 21, an arm driving head 22 and a material mixing component 23, the mechanical arm 21 is positioned at the rear side of the material mixing component 23, the output end of the mechanical arm 21 is connected with the arm driving head 22, so that in the process of the sand sprinkling device of the investment precision casting full-automatic shell manufacturing production line, firstly, six groups of trees are correspondingly arranged on the mould disc 13 one by one, the mechanical arm 21 drives the arm driving head 22 to take the mould disc 13 from a feeding station of the feeding mechanism 1, then the mould disc 13 is put into the material mixing component 23 filled with slurry for stirring and mixing, so that the slurry is adhered to the groups of trees, then the mould disc 13 is lifted upwards, after the groups of trees on the mould disc 13 are drained, the mould disc 13 is stopped to rotate by placing the mould disc 13 in the sand sprinkling mechanism 3, the groups adhered with the slurry are subjected to sand spraying treatment, and after the treatment is finished, the mould disc 13 is placed on a discharging station of the feeding mechanism 1 through the manipulator 21 for subsequent processing treatment; therefore, the production line consisting of the feeding mechanism 1, the slurry dipping mechanism 2 and the sand sprinkling mechanism 3 ensures that the whole process of the shell making operation is kept automated, and the automation is utilized to replace the manual work for processing, thereby greatly reducing the cost of the manual work and improving the processing efficiency;

the arm driving head 22 includes an installation cylinder 221, a clamp 222, a connection plate 223, a first driving motor 224, and a limit shaft 225; one end of the mounting cylinder 221 is connected with an output end of the manipulator 21, so that the mounting cylinder 221 can flexibly rotate, a clamp 222 is arranged in the mounting cylinder 221, the mold disc 13 can be grabbed and fixed on the manipulator 21 through the clamp 222 and flexibly move to a designated position along with the manipulator 21, a connecting plate 223 is sleeved at the other end of the mounting cylinder 221, a first driving motor 224 is arranged on the connecting plate 223, an output end of the first driving motor 224 penetrates through the connecting plate 223, a limiting shaft 225 is arranged at the output end of the first driving motor 224, and the limiting shaft 225 is matched with the locking block 138 of the mold disc 13; the arm driving head 22 can clamp and take the mold disc 13 through the clamp 222, and meanwhile, in the clamping process, the limiting shaft 225 not only can play a role in positioning, but also can be accurately inserted into the locking block 138 of the mold disc 13, so that the output end of the first driving motor 224 is connected with the mold disc 13, and the first driving motor 224 is started, so that the tree grouping on the mold disc 13 can be rotated;

the mixing component 23 comprises a mounting frame 231, a rotary cylinder 232 and a scraper 233; the mounting frame 231 is positioned among the feeding mechanism 1, the slurry dipping mechanism 2 and the manipulator 21, and the position is selected, so that the manipulator 21 can conveniently and correspondingly send the die disc 13 into the feeding mechanism 1, the sand spraying mechanism 3 and the rotary cylinder 232, the stroke is greatly shortened, and the full-automatic shell making work efficiency of investment precision casting is improved; the mounting frame 231 is provided with the rotary cylinder 232, the rotary cylinder 232 can rotate along the mounting frame 231 under the driving of the motor, the inner wall of the rotary cylinder 232 is provided with the scraper 233, the scraper 233 is arranged on the mounting frame 231, the scraper 233 can scrape off the slurry on the inner wall of the rotary cylinder 232 and drop into the rotary cylinder 232, and the problem that the quality of the slurry is influenced because the slurry stands in the rotary cylinder 232 and is solidified is effectively prevented, so that the quality of the prepared product is influenced;

the slurry dipping mechanism 2 is specifically implemented in such a way that the manipulator 21 grabs the mold disc 13 from the feeding mechanism 1, starts the rotary cylinder 232 in advance, rotates at a rotation speed of 200-300r/min, then places the mold disc 13 into the rotary cylinder 232 filled with the slurry, completely immerses the tree group into the slurry, rotates at a rotation speed of 150-250r/min by controlling the tree group for 5-10s, reduces the rotation speed of the tree group number to 20-40r/min, and lifts the tree group number upwards above the rotary cylinder 232, so that the redundant slurry in the tree group number is dripped into the rotary cylinder 232 under the weak rotation action for recycling, and stops the rotation of the tree group number until no redundant slurry in the tree group number is dripped, and sends the mold disc 13 into the slurry dipping mechanism 3; the slurry dipping mechanism 2 can fully mix the tree group and the slurry, so that the slurry can be uniformly dipped on the group number, and meanwhile, the speed of the group number is controlled, so that the slurry can be saved to the maximum extent, the phenomenon of slurry splashing can not occur, and the automatic work can be completely realized through the work of the mechanical arm 21;

the feeding mechanism 1 comprises a bracket 11, a storage plate 12 and a mould disc 13; the rack 11 is provided with a storage plate 12, the storage plate 12 is provided with two stations, namely a feeding station and a discharging station, which are used for temporary storage of feeding materials and placement of discharging materials, a mold disc 13 is arranged on the storage plate 12, the storage plate 12 can be used for simultaneously placing two mold discs 13, one mold disc 13 is provided with a tree group to prepare for the processes of dipping pulp and the like, and the other mold disc 13 is used for placing the tree group which is dipped and sprayed with sand and waits for the tree group to be taken down from the mold disc 13 for subsequent work;

the object placing plate 12 comprises a fixing plate 121, fixing strips 122, a ball 123, a roller 124 and a pin shaft cylinder 125, wherein the fixing plate 121 is installed on the bracket 11, two sides of the fixing plate 121 are respectively provided with a U-shaped groove, one U-shaped groove is a feeding station of the die disc 13, the other U-shaped groove is a blanking station of the die disc 13, the size of the U-shaped groove is matched with that of the arm driving head 22, so that the manipulator 21 can drive the arm driving head 22 to move along the U-shaped groove, the corresponding die disc 13 can be conveniently placed on the corresponding feeding station or blanking station, the fixing strips 122 are respectively installed on the upper side and the lower side of the fixing plate 121, the length of the fixing strips 122 is equal to that of the fixing plate 121, the two fixing strips 122 not only can support the die disc 13, so that the die disc 13 can be directly placed on the fixing plate 121, but also play a role in positioning during the placing process, the upper fixing strip 122 is provided with two pin shaft cylinders 125, the two pin shaft cylinders 125 are respectively positioned on a feeding station and a discharging station, the output end of each pin shaft cylinder 125 is connected with a pin shaft, the fixing strip 122 is provided with a through hole matched with the pin shaft, when the die disc 13 is placed on the fixing plate 121, the output shaft of each pin shaft cylinder 125 performs stretching work, the pin shaft is inserted into the corresponding pin hole 1310 on the die disc 13 through the through hole to fix the die disc 13, the die disc 13 is prevented from falling off from the fixing plate 121 due to factors such as external force, when the die disc 13 is to be taken, only the output shaft of each pin shaft cylinder 125 needs to perform contraction work, and the pin shaft is reset; the lower fixing strip 122 is provided with a plurality of rollers 124 side by side, so that the die disc 13 can be placed in a sliding manner along the rollers 124 of the lower fixing strip 122 in the taking or placing process, the placing effect is more stable, the rollers 124 can reduce the friction between the die disc 13 and the fixing strip 122, the bottom side wall of the die disc 13 is protected, and the service life of the die disc is prolonged;

the mould disc 13 comprises a mounting disc 131, a mounting head 132, a clamping ring 133, a synchronous pulley 134, a connecting cylinder 135, a hoop 136, a connecting head 137, a locking block 138, a limiting block 139 and a pin hole 1310; the cross section of the mounting disc 131 is a regular hexagon structure, an inner cavity of the mounting disc 131 is a hollow structure, six mounting heads 132 are arranged on one side of the mounting disc 131 in an annular array mode, the mounting heads 132 are connected with a rotating shaft through clamping rings 133, the rotating shaft is located in the inner cavity of the mounting disc 131 and is rotatably mounted on the inner wall of the mounting disc 131, synchronous belt pulleys 134 are sleeved on the outer wall of the rotating shaft, six groups of synchronous belt pulleys 134 are connected with each other through a conveying belt, one group of rotating shaft extends to the other side wall of the mounting disc 131 and is connected with a locking block 138, a locking groove matched with a limiting shaft 225 is formed in the locking block 138, a connector 137 is arranged on the other side wall of the mounting disc 131, and the connector 137 is matched with a clamp 222 for work; the first driving motor 224 is connected with the locking block 138, so that the limiting shaft 225 at the output end of the first driving motor 224 is inserted into the locking groove of the locking block 138, then the first driving motor 224 is started to work, so that the rotating shaft connected with the first driving motor is rotated, and the rotating shaft enables the six mounting heads 132 to rotate simultaneously through the transmission action of the synchronous belt pulley 134 and the conveyor belt; therefore, the design of the connector 137 and the locking block 138 of the mold disc 13 facilitates the quick connection with the manipulator 21 and can directly work, and the structure of the inner cavity of the mold disc 13 enables six mounting heads 132 to rotate simultaneously, thereby driving six tree groups to rotate, enabling the mold disc 13 to load six trees, greatly improving the workload of investment precision casting full-automatic shell making and increasing to 6 times, and also ensuring that six tree groups can rotate simultaneously and ensuring the quality of the tree groups in subsequent work;

the mounting head 132 is movably provided with two connecting cylinders 135, the two connecting cylinders 135 are of a semi-cylindrical structure, the two connecting cylinders 135 are combined to form a cylindrical mounting groove for mounting the group number, and the two connecting cylinders 135 are mutually connected through an anchor ear 136, so that the connecting cylinders 135 are convenient for placing the tree group in the cylindrical mounting groove and are quickly fixed through the anchor ear 136, and the arrangement of the connecting cylinders 135 greatly improves the efficiency of mounting and dismounting the tree group;

the inner wall of the mounting disc 131 is provided with a limiting block 139, the limiting block 139 is provided with a pin hole 1310 matched with a pin shaft, and the side wall of the mounting disc 131 is provided with a communicating hole matched with the pin hole 1310, so that the output shaft of the pin shaft cylinder 125 extends to enable the pin shaft to be inserted into the corresponding pin hole 1310 on the die disc 13 through a through hole, and the die disc 13 can be fixed;

this feed mechanism 1 specifically works as: taking the mold disc 13 placed at the feeding station, driving the arm driving head 22 to move to the position of the mold disc 13 by the manipulator 21, clamping and fixing the mold disc 13 by the cooperation of the connecting head 137 and the clamp 222, inserting the limiting shaft 225 connected with the first driving motor 224 into the locking groove in the locking block 138, and connecting the locking block 138 with the first driving motor 224; at the same time, the output shaft of the pin cylinder 125 retracts, so that the pin is removed from the pin hole 1310 of the mounting plate 131, and the die plate 13 can be taken off from the fixing plate 121;

when the mold disc 13 is placed at the blanking station, the manipulator 21 slides the mold disc 13 along the rollers 124 of the fixing strips 122 below the mold disc, when the mold disc reaches a specified position, the output shaft of the pin shaft cylinder 125 extends to enable the pin shaft to pass through the through hole and be inserted into the corresponding pin hole 1310 on the mold disc 13 to fix the mold disc 13, and meanwhile, the clamp 222 of the arm driving head 22 is opened to enable the manipulator 21 to be separated for the next feeding work, so that the circulating uninterrupted work is realized, and the full-automatic shell manufacturing production efficiency of investment precision casting is improved;

the sand sprinkling mechanism 3 comprises a base 31, a feeding plate 32, a baffle 33, a connecting rod 34, a screen 35, a working cavity 36, a second driving motor 37, a sand sprinkling cylinder 38 and a sand sprinkling piece 39; a sand pouring cylinder 38 is mounted on the base 31, the sand pouring cylinder 38 is connected with the output end of a second driving motor 37, the sand pouring cylinder 38 rotates along the base 31 under the power action of the second driving motor 37, a working cavity 36 is arranged in the sand pouring cylinder 38, and a sand pouring piece 39 is arranged in the working cavity 36;

the sand pouring member 39 comprises a blade plate 391, a cylinder 392, an inner cylinder 393 and a connecting ring 3911, wherein the inner cylinder 393 is positioned in the sand pouring cylinder 38 and is installed in the sand pouring cylinder 38, the inner wall of the inner cylinder 393 is annularly provided with the blade plates 391, and the bottom of the inner cylinder 393 is a sand retention cavity, so when the tree group on the mold disc 13 is poured, the mold disc 13 provided with the group number is dipped by the manipulator 21 and is placed in the inner cylinder 393 of the sand pouring cylinder 38, then the second driving motor 37, the first driving motor 224 and the manipulator 21 are started to rotate, the second driving motor 37 drives the sand pouring cylinder 38 to rotate at the rotation speed of 100 and 150r/min, the first driving motor 224 drives the group number to rotate at 60-100r/min, the manipulator 21 drives the mold disc 13 to rotate at 30-50r/min in a positive and negative rotation mode, the sand pouring cylinder 38 rotates to enable the sand to rotate to the top of the cylinder through the blade plates 391, under the action of gravity, the sand falls down, is filtered by the screen 35 and then is sprinkled on the groups stained with the slurry, after the groups are sprinkled in the sand sprinkling cylinder 38 for 15-30s, the second driving motor 37, the first driving motor 224 and the mechanical arm 21 are closed to rotate, so that the sand sprinkling process is completed, the sand sprinkling mechanism 3 can automatically work on six groups, the sand can be uniformly attached to the groups, the efficiency of the full-automatic shell making of investment precision casting in the sand sprinkling process is improved, and the sand sprinkling quality of the groups is also improved;

when the sand spraying work is carried out for a period of time, the overall quality of the sand initially entering the sand retention cavity is reduced, and if the work is continuously carried out by the initial sand spraying process, the content of the sand falling from the sand spraying cylinder 38 in the later period in unit time is changed, so that the product produced by the former stage process and the product produced by the latter stage process are different when the tree group is sprayed; therefore, the blade plate 391 is improved, and particularly, the blade plate 391 is movably connected with the inner cylinder 393, and the middle part of the inner cylinder 393 is provided with a connecting ring 3911, the connecting ring 3911 is rotatably connected with the inner cylinder 393, the inner ring of the connecting ring 3911 is connected with the blade 391 through the movable shaft, the outer ring of the connecting ring 3911 is connected with the inner wall of the sand-leaching cylinder 38 through the cylinder 392, so that, by controlling the telescopic operation of the cylinder 392, the connecting ring 3911 is driven to rotate along the inner cylinder 393, the rotation of the connecting ring 3911 drives the impeller plate 391 to rotate through the movable shaft, thereby changing the inclination angle of the louver 391, so that the louver 391 can carry sand of a weight adapted to that of the original time, therefore, under the condition that the total amount of sand is less in the later stage, the angle of the blade plate 391 is changed, the sand content of the tree group before and after the process is matched during sand spraying, and the overall quality of the full-automatic shell making of investment precision casting is ensured;

when the sand content in the sand retention cavity is low, the sand pouring cylinder 38 is not transparent, the internal condition cannot be observed, and the worker is busy with other things, so that the worker cannot technically add the sand, therefore, an alarm mechanism is arranged in the sand pouring cylinder 38, the alarm mechanism comprises an alarm 398 and a touch switch 399, the alarm 398 is arranged on the outer wall of the sand pouring cylinder 38, the touch switch 399 is arranged on the alarm 398, and the touch switch 399 is positioned on the inner wall of the sand pouring cylinder 38;

a linkage mechanism is arranged between the alarm mechanism and the sand pouring piece 39, the linkage mechanism comprises a first gear 394, a second gear 395, a slide bar 396, a touch block 397 and an empty groove 3910, the bottom of the connecting ring 3911 is provided with the first gear 394, the inner wall of the sand pouring cylinder 38 is provided with the slide bar 396, the slide bar 396 is of an arc structure matched with the sand pouring cylinder 38, the slide bar 396 is connected with the inner wall of the sand pouring cylinder 38 in a sliding manner, the slide bar 396 is provided with the second gear 395, the first gear 394 is positioned right above the second gear 395 and is in meshed connection with the second gear 395, the empty groove 3910 is arranged in the slide bar 396, one side of the empty groove 3910 is provided with a touch block 397, and the touch block 397 is matched with a touch switch 399;

the specific work of the sand showering piece 39 is as follows: according to the content of sand in the sand pouring cylinder 38, the stroke of the air cylinder 392 is controlled intermittently, so that the air cylinder 392 makes intermittent extension movement to drive the connecting ring 3911 to rotate along the inner cylinder 393, the rotation of the connecting ring 3911 drives the blade 391 to rotate through the movable shaft, the inclination angle of the blade 391 is changed, the blade 391 can bear the sand with the weight matched with the initial time phase, the connecting ring 3911 drives the first gear 394 to rotate when rotating, the sliding bar 396 is moved along the inner wall of the sand pouring cylinder 38 through the meshing action between the first gear 394 and the second gear 395, the touch block 397 on the sliding bar 396 moves along with the rotation, when the touch block 397 moves to the position of the touch switch 399, the touch switch 399 is turned on, the alarm 398 gives an alarm sound, and reminds a worker to supplement the sand into the sand pouring cylinder 38; therefore, the sand spraying piece 39 can not only ensure that the angle of the blade plate 391 is changed under the condition that the total amount of sand is less in the later period, so that the sand content is matched when the trees in the group before and after the process are subjected to sand spraying, but also can remind workers to replenish the sand in time, thereby ensuring the safety and high-quality work of the sand spraying process;

the feeding plate 32 and the baffle 33 are respectively arranged at the position of the feeding hole of the sand pouring cylinder 38, the feeding plate 32 and the baffle 33 are both arranged on the base 31 and cannot rotate along with the sand pouring cylinder 38, the feeding plate 32 plays a role in guiding the materials, so that when sand is added, the sand can be added into the working cavity 36 of the sand pouring cylinder 38 only along the feeding plate 32, the effect of safe feeding is achieved, the baffle 33 plays a role in protection, and partial sand can be prevented from flying out of the feeding hole of the sand pouring cylinder 38 in the feeding and sand pouring processes;

one end of the connecting rod 34 is connected with the base 31, the other end of the connecting rod 34 is connected with the screen 35, the screen 35 is located above the inner cylinder 393, and the screen 35 is used for filtering sand, so that the filtered sand is contacted with the tree group again and is stuck to the tree group, and the sand spraying quality of the tree group is guaranteed;

the specific process steps of the sand sprinkling mechanism 3 comprise: the mould discs 13 provided with a plurality of groups are dipped by the manipulator 21 and then are put into the inner cylinder 393 of the sand pouring cylinder 38, then, the second driving motor 37, the first driving motor 224 and the manipulator 21 are started to rotate, the second driving motor 37 drives the sand pouring cylinder 38 to rotate at a rotation speed of 100-, after being filtered by the screen 35, the mixture is sprayed on the groups stained with the slurry, and after the groups are sprayed for 15 to 30 seconds in the sand spraying cylinder 38, the second driving motor 37, the first driving motor 224 and the mechanical arm 21 are turned off to complete the sand spraying process;

when the subsequent continuous production is performed, the cylinder 392 can intermittently perform the extension movement to drive the connecting ring 3911 to rotate along the inner cylinder 393, the rotating of the connecting ring 3911 can drive the paddle 391 to rotate through the movable shaft, so that the inclination angle of the paddle 391 is changed, the paddle 391 can bear sand with the weight matched with the initial time phase, the connecting ring 3911 drives the first gear 394 to rotate when rotating, the sliding bar 396 is moved along the inner wall of the sand pouring cylinder 38 through the meshing action between the first gear 394 and the second gear 395, the touch block 397 on the sliding bar 396 moves along with the rotation, when the touch block 397 moves to the position of the touch switch 399, the touch switch 399 is turned on, the alarm 398 generates alarm sound, and the worker is reminded to supplement the sand into the sand pouring cylinder 38.

The working principle of the utility model is as follows: the manipulator 21 drives the arm driving head 22 to move to the position of the mold disc 13, the connecting head 137 and the clamp 222 work in a matching manner, the mold disc 13 is clamped and fixed, meanwhile, the limiting shaft 225 connected with the first driving motor 224 is inserted into the locking groove in the locking block 138, and the locking block 138 is connected with the first driving motor 224; at the same time, the output shaft of the pin cylinder 125 retracts, so that the pin is removed from the pin hole 1310 of the mounting plate 131, and the die plate 13 can be taken off from the fixing plate 121;

starting the rotary cylinder 232, rotating at the rotation speed of 200-300r/min, then placing the mold disc 13 into the rotary cylinder 232 filled with the slurry, completely immersing the tree group in the slurry, rotating at the rotation speed of 150-250r/min by controlling the tree group, rotating for 5-10s, reducing the rotation speed of the number of the group to 20-40r/min, and lifting up to the upper part of the rotary cylinder 232, so that the redundant slurry on the number of the group is dripped into the rotary cylinder 232 under the weak rotation effect to be recovered, and stopping the rotation of the number of the group until the redundant slurry is not dripped on the number of the group, thereby completing the slurry dipping work;

the mould discs 13 provided with a plurality of groups are dipped by the manipulator 21 and then are put into the inner cylinder 393 of the sand pouring cylinder 38, then, the second driving motor 37, the first driving motor 224 and the manipulator 21 are started to rotate, the second driving motor 37 drives the sand pouring cylinder 38 to rotate at a rotation speed of 100-, and after filtering through the screen 35, spraying the filtered slurry on the groups stained with the slurry, and after the groups are sprayed for 15-30s in the sand spraying cylinder 38, turning off the second driving motor 37, the first driving motor 224 and the mechanical arm 21 to rotate, thereby completing the sand spraying process.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (9)

1. The sand spraying device of the full-automatic shell manufacturing production line for precision investment casting is characterized by comprising a sand spraying mechanism (3);

a sand sprinkling cylinder (38) is arranged on a base (31) of the sand sprinkling mechanism (3), the sand sprinkling cylinder (38) is connected with the output end of a second driving motor (37), and a sand sprinkling piece (39) is arranged in a working cavity (36) of the sand sprinkling cylinder (38);

the inner cylinder (393) of the sand pouring piece (39) is positioned in the sand pouring cylinder (38), the inner wall of the inner cylinder (393) is annularly provided with a plurality of blades (391), and the blades (391) are movably connected with the inner cylinder (393).

2. The sand pouring device of the investment precision casting full-automatic shell production line according to claim 1, wherein the middle part of the inner cylinder (393) is provided with a connecting ring (3911), and the inner ring of the connecting ring (3911) is connected with the blade plate (391) through a movable shaft.

3. The sand pouring device of the investment precision casting full-automatic shell manufacturing production line according to claim 2, wherein the connecting ring (3911) is rotatably connected with the inner cylinder body (393), and the outer ring of the connecting ring (3911) is connected with the inner wall of the sand pouring cylinder (38) through the air cylinder (392).

4. The sand pouring device of the investment precision casting full-automatic shell manufacturing production line according to claim 3, wherein an alarm mechanism is arranged in the sand pouring cylinder (38), the alarm mechanism comprises an alarm (398) and a touch switch (399), the alarm (398) is installed on the outer wall of the sand pouring cylinder (38), the touch switch (399) is arranged on the alarm (398), and the touch switch (399) is located on the inner wall of the sand pouring cylinder (38).

5. The sand pouring device of the full-automatic investment casting shell manufacturing production line according to claim 4, wherein a linkage mechanism is arranged between the alarm mechanism and the sand pouring piece (39), a first gear (394) is arranged at the bottom of a connecting ring (3911) of the linkage mechanism, a slide bar (396) is arranged on the inner wall of the sand pouring cylinder (38), the slide bar (396) is connected with the inner wall of the sand pouring cylinder (38) in a sliding mode, a second gear (395) is arranged on the slide bar (396), the first gear (394) is located right above the second gear (395) and is meshed with the second gear (395), an empty groove (3910) is formed in the slide bar (396), a touch block (397) is arranged on one side of the empty groove (3910), and the touch block (397) is matched with a touch switch (399).

6. The sand pouring device of the full-automatic investment precision casting shell manufacturing production line according to claim 5, wherein the slide bar (396) is of an arc-shaped structure matched with the sand pouring cylinder (38).

7. The sand pouring device of the full-automatic investment precision casting shell manufacturing production line according to claim 1, wherein a connecting rod (34) is connected to the base (31), the other end of the connecting rod (34) is connected with a screen (35), and the screen (35) is located above the inner cylinder (393).

8. The sand pouring device of the full-automatic investment precision casting shell manufacturing production line according to claim 6, wherein according to the content of sand in the sand pouring cylinder (38), the stroke of the cylinder (392) is controlled intermittently, so that the cylinder (392) makes intermittent extension movement to drive the connecting ring (3911) to rotate along the inner cylinder (393), the rotation of the connecting ring (3911) drives the vane plate (391) to rotate through the movable shaft, the inclination angle of the vane plate (391) is changed, and the vane plate (391) can bear the sand with the weight matched with the initial time phase.

9. The sand pouring device of the full-automatic investment casting shell manufacturing production line according to claim 8, wherein the connecting ring (3911) drives the first gear (394) to rotate when rotating, the slide bar (396) moves along the inner wall of the sand pouring cylinder (38) through the meshing action between the first gear (394) and the second gear (395), the touch block (397) on the slide bar (396) moves along with the first gear, and when the touch block (397) moves to the position of the touch switch (399), the touch switch (399) is opened, so that the alarm (398) gives an alarm to remind a worker of supplementing sand into the sand pouring cylinder (38).

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