CN112658218A - Full-automatic sand core dip-coating system and dip-coating method thereof - Google Patents

Abstract

A full-automatic sand core dip-coating system and a dip-coating method thereof are provided, wherein the full-automatic sand core dip-coating system comprises a feeding unit, a dip-coating unit, a clamping unit, a cleaning unit and a control system electrically connected with each unit; the feeding unit is used for providing sand core blanks; the clamping unit is used for clamping and transferring the sand core, and the dip-coating unit is used for dip-coating the sand core and comprises a dip-coating module and a circulating module; the cleaning device is used for cleaning the clamp. The invention realizes the automatic process of integrating sand core feeding, blowing, dip coating, conveying and clamp cleaning, greatly saves the labor cost, and improves the production efficiency and the casting quality.

Description

Full-automatic sand core dip-coating system and dip-coating method thereof

Technical Field

The invention relates to the technical field of sand core dip-coating, in particular to a full-automatic sand core dip-coating system and a dip-coating method thereof.

Background

The hydraulic valve and hydraulic pump products matched with the engineering machinery industry are produced and cast by conventionally adopting a sand core casting process, and the commonly used sand core (inner core) can be used only after dip-coating and drying the coating. In the dip-coating process of the sand core, the traditional mode is that the sand core is manually taken and dip-coated into the coating, then the redundant coating on the surface of the sand core is manually thrown away, and the sand core is placed on a roller way tray at the front section of the drying furnace to be dried. The production process adopts the modes of manual dip coating, manual spin coating and manual carrying and discharging, the labor intensity of personnel is high and dull, and the production efficiency is not high. Different operators have poor uniformity of surface coating of the sand core due to different dip-coating time and different spin-coating angle and force, and the quality of a final product is affected. The simple coating pool used for dip coating can not stir the coating evenly, so that the thickness of the coating on the surface of the sand core and the like do not meet the process requirements, and the qualification rate of the final product is influenced.

The traditional casting industry has harsh environment and high labor intensity, the intelligent production of casting is urgent and can not be waited for, the full-automatic continuous work of each process is the trend of industry development, the sand core for casting needs to carry out surface dip-coating paint treatment on the surface of the sand core, on one hand, the sand sticking of the casting can be effectively reduced, and on the other hand, the improvement of a series of characteristics such as heat resistance, stability, molten metal sand washing resistance and the like of the surface of the casting is facilitated.

Through retrieval, the full-automatic coating pool device for dip-coating of the sand core, with application number 202010526958, discards manual material pouring and stirring, so that the coating pool overflows to a filter pool and is matched with a circulating flow pipeline system to solve the problems of automatic feeding, filtering and the like, but still has two problems, namely, firstly, the coating and water are mixed and are easy to deposit at the bottom of the pool, the stirring is not uniform, and secondly, the series of continuous actions of full-automatic circulating feeding, clamping, dip-coating and conveying cannot be realized.

For example, the sand core dip-coating equipment and the coating proportioning method with application number 2019109097664 solve the problem of uneven stirring by arranging a nozzle at the bottom, but can still not realize the continuous actions of circular feeding, clamping, dip-coating and conveying, and the problems to be solved are that firstly, when a manipulator or a robot is used for clamping the sand core to automatically sweep the surface of the sand core, and the clamped sand core is immersed in a dip-coating tank for dip-coating after sweeping, a hardened thickness coating layer is easily formed at the contact part of a clamp and the sand core after a period of use, and after multiple dip-coating, the coating layer not only can influence the clamping function of the clamp, but also can easily cause the clamp crack and local damage of the sand core, thus seriously influencing the qualification rate of the sand core and further influencing the process; secondly, flexible conversion and dip coating of sand cores of different specifications cannot be realized.

Disclosure of Invention

The invention aims to solve the technical problem of providing a full-automatic sand core dip-coating system and a dip-coating method thereof, which have the advantages of high automation degree, high product dip-coating surface quality, adaptability to flexible dip-coating and uniform stirring of products with different specifications.

The sand core dip-coating equipment or the full-automatic coating pool device in the prior art can only realize the automatic liquid circulation of a dip-coating pool and an overflow pool, cannot realize the whole complete process flow of blowing, dip-coating of unit coatings of the dip-coating pool, completion of dip-coating of the sand core and transmission to the next procedure, generally manually places the sand core in the sand core blowing device, then manually places the sand core in the dip-coating pool, manually takes the sand core out and enters the next procedure, and is intelligent, and only the sand core is pressed and clamped by a robot or a manipulator to be transmitted to the next procedure after the dip-coating of the sand core is completed and dried. The prior art can only solve the problems of coating circulating feeding of a dip-coating pool and the incapability of realizing the procedures of uninterruptedly clamping, blowing, dip-coating and the like with high quality, and solves the technical problem of ensuring the dip-coating quality of the surface of a product while realizing the full-automatic complete process flow, thereby improving the surface quality of a casting product and improving the production efficiency.

The invention belongs to the combination invention, combines partial technical schemes to form a new technical scheme, solves the technical processes of sand core blowing, dip coating and conveying of the sand core with high quality, and comprises a feeding unit, a blowing unit, a dip coating unit, a clamping unit, a cleaning unit and a control system which is electrically connected with the units, wherein the units are mutually matched and mutually supported, and are fastened by a ring; second, creative work need be paid out in the combination of each unit, need overcome traditional concept, utilizes robot, anchor clamps, cleaning unit's cooperation, has got rid of artifical supplementary, and in addition, the switching of diaphragm pump, nozzle, pipeline ball valve can form the empty process of coating from dip-coating pond, overflow pond to the outside, need not the manual work and empties, and is convenient simple, and the security is high simultaneously.

The technical scheme adopted by the invention for solving the technical problems is as follows: a full-automatic sand core dip-coating system comprises a feeding unit, a dip-coating unit, a clamping unit, a cleaning unit and a control system electrically connected with the units; the feeding unit is used for providing sand core blanks; the clamping unit is used for clamping and transferring the sand core and comprises a robot and a clamp which is arranged on the robot and used for taking the sand core; the dip-coating unit is used for dip-coating the sand core and comprises a dip-coating module and a circulating module; the dip-coating module comprises a dip-coating pool, an overflow pool and a plurality of nozzles, wherein the dip-coating pool is arranged in the overflow pool, and the nozzles are arranged in the inner wall of the dip-coating pool; the circulation module comprises a diaphragm pump and a filter; the overflow tank is sequentially connected with the diaphragm pump and the filter through pipelines, a discharge port of the filter is connected with the nozzle, in detail, the overflow tank also comprises a feed pipe, a discharge pipe and a transit pipe, the overflow tank is connected with the diaphragm pump through the discharge pipe, the discharge port of the diaphragm pump is connected with the feed port of the filter through the transit pipe, and the discharge pipe of the filter is connected with the nozzle in the dip coating tank through the transit pipe; the cleaning device is used for cleaning the clamp.

In order to improve the full-automatic sand core dip-coating system on the surface of the sand core, the full-automatic sand core dip-coating system also comprises a blowing unit, wherein the blowing unit is used for blowing the sand core before dip-coating, and comprises a first box body, a blowing nozzle, a first air control part, silencing cotton and a sand collecting groove, an operation cavity is arranged in the box body, an operation opening is formed in one side of the box body, the blowing nozzle is provided with a plurality of parts and is installed on the inner wall of the box body, the silencing cotton is arranged in the operation cavity, the first air control part is connected with the blowing nozzle and is used.

In detail, the feeding unit comprises a base, a double-station turntable, a first driving mechanism, a supporting bearing and a positioning mechanism, wherein the double-station turntable is installed at the top of the base, the top surface of the double-station turntable is provided with a plurality of sand core clamping tools for placing sand cores, the top surface of each sand core clamping tool is provided with a positioning block, the bottom of the double-station turntable is provided with the supporting bearing and is rotatably connected with the base through the bearing, the first driving mechanism is connected with the double-station turntable and can drive the double-station turntable to rotate, the positioning mechanism is used for completing positioning after single rotary motion, the first driving mechanism and the positioning mechanism are not limited to the structural mode set forth by the invention, and the mode of replacing the conventional technical means is within the protection scope of the invention.

Preferably, the first driving mechanism comprises a first motor, a first gear, a second gear and a rotary bearing, the first motor is in transmission connection with the first gear, the second gear is meshed with the first gear, the rotary bearing is sleeved in the second gear, and the second gear is fixedly connected with the double-station turntable.

Preferably, the positioning mechanism comprises a second driving mechanism, a locking member and a sensing member, the double-station rotary table is provided with a jack which is arranged corresponding to the locking member, the sensing member is at least provided with one jack and is installed on one side of the double-station rotary table and used for detecting the rotating position of the double-station rotary table, and the second driving mechanism drives the locking member to be inserted into the jack and positions the double-station rotary table.

In detail, the fixture comprises a connecting frame, a slide rail mechanism, a third driving mechanism, a first clamping arm, a second clamping arm and clamping blocks, wherein the connecting frame is connected with the output end of the robot, the slide rail mechanism is installed on one side of the connecting frame, the first clamping arm and the second clamping arm are arranged on the slide rail mechanism, the clamping blocks are arranged in pairs and are installed on the first clamping arm and the second clamping arm, the third driving mechanism is connected with the second clamping arm and can drive the second clamping arm to be close to the first clamping arm, so that the clamping blocks clamp the sand core, the third driving mechanism can be an air cylinder or a lead screw assembly, and the protection scope of the invention is within the protection scope as long as the mutual close of the first clamping arm and the second clamping arm can be realized.

In order to facilitate clamping of sand cores of different specifications, the clamp and the robot are detachably connected, the robot can be connected in a screw locking mode, a clamping locking mode and the like, the robot comprises a robot body, a robot base and an electric control system, the robot body is installed on the robot base, the connection position of the robot body and the robot base can be a motor and a gear to drive the robot body to rotate, and the electric control system is electrically connected with the robot body and a control system.

In order to clear away the hardened thickness coating that anchor clamps got the psammitolite dip-coating back and produce many times, prevent to cause the clamp of psammitolite to split or local damage, need belt cleaning device in time to clear up anchor clamps, in particular, belt cleaning device includes second box and brush, has in the box and holds the chamber and its lateral wall is equipped with water inlet and delivery port, and the brush is installed and is held the intracavity and fix at the box lateral wall.

The full-automatic dip-coating device in the prior art needs manual assistance and has low safety performance, the invention adopts external protection measures, the invention does not need manual assistance in the mechanical operation space, in detail, the invention also comprises a safety fence for protecting the exterior of the whole machine and a conveying roller component for circulating and throwing the coated sand cores, one side of the double-station turntable is positioned in the safety fence, the other side of the double-station turntable is positioned outside the safety fence, the conveying roller component is arranged at one side of the robot, in detail, the safety fence comprises a plurality of upright posts, a fence, a safety door and a door lock, the upright posts are provided with a plurality of fans, the fence is arranged on the upright posts, each fence encloses the whole mechanical device in a system frame, be equipped with the emergency exit on one of them rail, install the lock on the emergency exit, the lock is connected with control system, and in case the emergency exit is opened, the robot stops the action, prevents the accidental injury maintenance personal.

A full-automatic sand core dip-coating method comprises a full-automatic sand core dip-coating system and comprises the following steps:

a. an operator carries the sand core to a positioning block on a double-station rotary table, and starts a control system to start full-automatic dip-coating of the sand core;

b. the first driving mechanism drives the double-station rotary table to rotate 180 degrees, the placed sand cores are rotated into the safety fence, and the positioning mechanism positions and locks the double-station rotary table;

c. the robot is matched with the clamp to clamp the sand core and transfer the sand core into a first box body of the blowing unit to blow and sweep the floating sand on the surface, and meanwhile, the double-station turntable rotates to rotate the empty sand core mould to the outside of the safety guardrail;

d. and the robot clamps the swept sand core to a dip-coating tank, immerses the sand core into the dip-coating tank to enable the coating in the dip-coating tank to be attached to the surface of the sand core, and throws and coats the sand core according to the set angle, speed, direction and times.

e. After the spin coating is finished, the robot clamps and transfers the sand core to the conveying roller assembly, and the sand core is transferred to the next procedure.

f. After the clamp clamps the sand core for multiple times to dip-coat the coating, the robot drives the clamp to extend into a second box body of the cleaning device, and the clamping block is cleaned in water under the brushing of the brush through the back-and-forth action of the robot.

The invention has the beneficial effects that:

firstly, the robot automatically dip-coats and produces the sand core only by placing materials outside the safety guardrail by an operator, so that continuous automatic operation of feeding, blowing, spin-coating, conveying and cleaning of a clamp of the sand core is efficiently realized, and meanwhile, a material pool is automatically stirred at a constant liquid level, so that the coating is not required to be stirred periodically, the production efficiency is improved, and the labor cost is saved;

secondly, the clamp is automatically cleaned after the clamp clamps the sand core and is dip-coated for multiple times, so that the clamping cracks and damages of the sand core are greatly reduced, and the qualified rate of the casting finished product is further improved;

thirdly, the detachable connecting structure of the clamp and the robot can be flexibly adapted to various products, so that the production efficiency is greatly improved;

fourthly, according to different products, relevant technological parameters of dip coating and spin coating of the robot are set through robot programming, stable production flow is realized, the coating quality of the dip-coated surface of the product is ensured, and the surface quality of the final casting product is improved; the constant liquid level four-side overflow coating pool is adopted, so that dead angle deposition of the coating pool is avoided, the diaphragm pump and the spray head circulating stirring technology enable the baume degree of the coating in the dip-coating area of the sand core of the dip-coating pool to be uniform, the sand core can not be damaged and dispersed due to insufficient strength and thickness of the coating in the casting process, and the qualification rate of castings is greatly improved;

fifthly, scribble the pond diaphragm pump and can realize that coating can reach the stirring process in dip-coating pond at the pump after overflowing the overflow pond from dip-coating pond, through the switching of pipeline ball valve, also can realize coating from dip-coating pond, overflow pond to outside empty process, use a period after coating, when needing to be changed coating, can adopt the diaphragm pump to carry out emptying of coating, only need the manual work place corresponding bucket of connecing at the pump export, empty for other tradition dip-coating pond manual works, drag for the mode of coating with the container, it is simpler, convenient.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a top view of the present invention;

FIG. 2 is a schematic structural diagram of a feeding unit, a dip coating unit, a clamping unit, a cleaning unit, a purging unit and a transfer roller assembly according to the present invention;

FIG. 3 is a schematic view of a partial structure of a feed unit according to the present invention;

FIG. 4 is a schematic view of a sand core mold structure of the present invention;

FIG. 5 is a schematic view of another partial structure of the feed unit of the present invention;

FIG. 6 is a schematic diagram of a dip-coated unit structure of the present invention;

FIG. 7 is a schematic view of the robot of the present invention;

FIG. 8 is a schematic view of the clamp of the present invention;

FIG. 9 is a schematic view of a cleaning unit according to the present invention;

FIG. 10 is a schematic structural view of a purge unit of the present invention;

FIG. 11 is a schematic view of the structure of the security fence of the present invention;

wherein: 1. a supply unit; 11. a base; 12. a double-station turntable; 121. a sand core mould; 122. positioning blocks; 13. a first drive mechanism; 131. a first motor; 132. a first gear; 133. a second gear; 14. A support bearing; 15. a positioning mechanism; 151. a second drive mechanism; 152. a locking member; 16. a sensing member; 2. a dip coating unit; 21. dip-coating the mixture in a pool; 22. an overflow tank; 23. a nozzle; 24. a diaphragm pump; 25. a filter; 26. a second air control; 3. a clamping unit; 31. a robot; 311. a robot body; 312. a base; 313. an electronic control system; 32. a clamp; 321. a connecting frame; 322. a slide rail mechanism; 323. a third drive mechanism; 324. a first clamp arm; 325. a second clamp arm; 326. a clamping block; 4. a cleaning unit; 41. A second case; 42. a brush; 43. a water inlet; 44. a water outlet; 5. a purging unit; 51. a first case; 52. a purge nozzle; 53. a first air control; 54. silencing cotton; 55. a sand collecting tank; 6. a security fence; 61. A column; 62. a fence; 63. a safety door; 64. a door lock; 71. a conveyor roller assembly; 72. a tray; 8. a control system; 9. a sand core.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.

The first embodiment is as follows:

the full-automatic sand core 9 dip-coating system is started through the control system 8 and comprises a feeding unit 1, a dip-coating unit 2, a clamping unit 3, a cleaning unit 4, a blowing unit 5 and a control system 8 electrically connected with the units.

Firstly, a feeding unit 1 provides a blank of a sand core 9, an operator places the sand core 9 on a double-station rotating table outside a safety fence 626, the feeding unit 1 comprises a base 11, a double-station rotating table 12, a first driving mechanism 13, a supporting bearing 14 and a positioning mechanism 15, the double-station rotating table 12 is installed at the top of the base 11, the top surface of the rotating table 12 is provided with a plurality of sand core 9 clamping fixtures 121 for placing the sand core 9, the top surface of the sand core 9 clamping fixtures 121 is provided with a positioning block 122, the bottom of the double-station rotating table is provided with the supporting bearing 14 and is rotatably connected with the base 11 through a bearing, the first driving mechanism 13 is connected with the double-station rotating table 12 and can drive the double-station rotating table 12 to rotate, the positioning mechanism 15 is used for completing the positioning after a single rotary motion, the first driving mechanism 13 and the positioning, the replacement mode of the conventional technical means belongs to the protection scope of the present invention, the first driving mechanism 13 includes a first motor 131, a first gear 132, a second gear 133 and a rotating bearing, the first motor 131 is connected with the first gear 132 in a transmission manner, the second gear 133 is meshed with the first gear 132, the rotating bearing is sleeved in the second gear 133, the second gear 133 is fixedly connected with the double-station turntable 12, the positioning mechanism 15 includes a second driving mechanism 151, a locking member 152 and a sensing member 16, the double-station turntable 12 is provided with a jack corresponding to the locking member 152, the sensing member 16 is provided with at least one and is installed at one side of the double-station turntable 12 for detecting the rotating position of the double-station turntable 12, the sensing member 16 can be a displacement sensor, a contact sensor or other second driving mechanism 151 to drive the locking member 152 to be inserted into the jack and position the double-station turntable 12, the sand core 9 mould 121 which is arranged outside the safety fence 626 and has finished material placing is rotated into the safety fence 626, a limiting block can be additionally arranged at the top of the double-station rotary table 12, when the limiting block is rotated by 180 degrees and contacts with a contact sensor, the locking member 152 is inserted into the insertion hole to be positioned, at the moment, the vacant sand core 9 mould 121 is rotated outside the safety fence 626 to be placed by an operator, namely, after the double-station rotary table 12 is rotated by 180 degrees, the sensing member 16 senses the corresponding position of the positioning member, and the second driving mechanism 151 drives the locking member 152 to be inserted into the insertion hole to be locked.

The dip-coating unit 2 is used for spin-coating the sand core 9 and comprises a second air control 26, and a dip-coating module and a circulating module which are connected with the second air control 26; the dip-coating module comprises a dip-coating pool 21, an overflow pool 22 and a nozzle 23, wherein the dip-coating pool 21 is arranged in the overflow pool 22, and the nozzle 23 is provided with a plurality of nozzles and is arranged in the inner wall of the dip-coating pool 21; the circulation module includes a diaphragm pump 24 and a filter 25; overflow tank 22 in proper order with diaphragm pump 24, filter 25 tube coupling, filter 25's discharge gate is connected with nozzle 23, in detail, still include the inlet pipe, discharging pipe and transfer pipe, overflow tank 22 passes through the discharging pipe and is connected with diaphragm pump 24, diaphragm pump 24's discharge gate is connected with filter 25's feed inlet through the transfer pipe, filter 25's discharging pipe is connected with nozzle 23 in the dip-coating pond 21 through the transfer pipe, of course, first ball valve is installed to the feed inlet of dip-coating pond 21, overflow tank 22's discharge gate is equipped with the second ball valve, filter 25 is connected with the relief valve, and its inside is equipped with a section of thick bamboo, when wasing filter 25, after needing to open the relief valve, just can take out inside. For cleaning the dip coating unit 2, tap water can be introduced for automatic cleaning after the coating is emptied.

The clamping unit 3 is used for clamping and transferring the sand core 9, and comprises a robot 31 and a clamp 32 which is arranged on the robot 31 and used for taking the sand core 9, in detail, the clamp 32 comprises a connecting frame 321, a slide rail mechanism 322, a third driving mechanism 323, a first clamping arm 324, a second clamping arm 325 and a clamping block 326, the connecting frame 321 is connected with the output end of the robot 31, the slide rail mechanism 322 is arranged at one side of the connecting frame 321, the first clamping arm 324 and the second clamping arm 325 are arranged on the slide rail mechanism 322, the slide rail mechanism 322 comprises a sliding plate and a sliding block, the sliding plate is provided with a sliding groove, the sliding block is arranged on the sliding groove and can move back and forth along the sliding groove, one end of the second clamping arm 325 close to the sliding block is fixedly connected with the sliding block, the clamping block 326 is arranged in pairs and is arranged on the first clamping arm 324 and the second clamping arm 325, the third driving mechanism 323 is connected with the second clamping arm 325 and can drive the second clamping arm 325 to, therefore, the clamping block 326 can clamp the sand core 9, and the third driving mechanism 323 can be an air cylinder or a screw assembly, and is within the protection scope of the present invention as long as the first clamping arm 324 and the second clamping arm 325 can be close to each other.

The blowing unit 5 is used for blowing the sand core 9 before dip-coating, and comprises a first box body 51, a blowing nozzle 52, a first air control part 53, silencing cotton 54 and a sand collecting groove 55, wherein an operation cavity is formed in the box body, an operation opening is formed in one side of the box body, the blowing nozzle 52 is provided with a plurality of parts and is installed on the inner wall of the box body, the silencing cotton 54 is arranged in the operation cavity, the first air control part 53 is connected with the blowing nozzle 52 and used for blowing and blowing the sand core 9, the first air control part 53 is a control air valve, compressed air is connected with the blowing nozzle 52 through the control air valve, and the air blown down by the blowing nozzle 52 is arranged in the sand collecting groove 55 below the box.

In the dip coating of the robot 31, since the coating material needs to enter the part of the jig 32, the residual coating material is deposited at the clamping point of the jig 32 after a few cycles of operation, and therefore the jig 32 needs to be cleaned periodically. This cleaning process is automatic control completely, can set for the washing cycle period on electrical system 313 human-computer interface, if set for 5, then behind 5 psammitolite 9 had been placed in robot 31 dip-coating again, empty anchor clamps 32 washs the action, go later and get psammitolite 9 again, of course, the number of times of setting can be according to the quantity decision of remaining picture layer on anchor clamps 32, belt cleaning device includes second box 41 and brush 42, it holds the chamber and its lateral wall is equipped with water inlet 43 and delivery port 44 to have in the box, brush 42 is installed and is fixed at the box lateral wall in holding the chamber, water inlet 43 and delivery port 44 all are equipped with the control valve, so that guarantee the cleanliness of quality of water, and then guarantee the abluent quality of anchor clamps 32.

Example two: the difference from the first embodiment is that: in order to clamp the sand cores 9 with different specifications conveniently, the clamp 32 and the robot 31 can be detachably connected and can be connected in a screw connection mode, a clamping connection mode and the like, the robot 31 comprises a robot body 311, a base 312 and an electric control system 313, the robot body 311 is installed on the base 312, the connection position of the robot body 311 and the base 312 can be driven by a motor and a gear to rotate, and the electric control system 313, the robot body 311 and the control system 8 are electrically connected.

Example three: different from the first embodiment, the sand core circulation throwing-coating machine further comprises a safety fence 626 for protecting the exterior of the whole machine and a conveying roller assembly 71 for circulating the thrown-coating sand cores 9, one side of the double-station rotary table 12 is located in the safety fence, the other side of the double-station rotary table is located outside the safety fence, the conveying roller assembly 71 is arranged on one side of the robot 31, in detail, the safety fence 626 comprises a plurality of columns 61, fences 62, safety doors 63 and door locks 64, the columns 61 are provided with a plurality of pieces, the fences 62 are provided with a plurality of pieces and are installed on the columns 61, each fence 62 encloses the whole machine device in a system frame, one of the fences 62 is provided with the safety door 63, the door lock 64 is installed on the safety door 63, the door lock 64.

A full-automatic sand core 9 dip-coating method comprises a full-automatic sand core 9 dip-coating system, and comprises the following steps:

a. an operator carries the sand core 9 to a positioning block 122 on the double-station rotary table 12, and starts the control system 8 to start the full-automatic dip coating of the sand core 9;

b. the first driving mechanism 13 drives the double-station rotary table 12 to rotate, the placed sand core 9 is rotated into the safety fence 626, and the positioning mechanism 15 is used for positioning and locking the double-station rotary table 12.

c. The robot 31 is matched with the clamp 32 to clamp the sand core 9 and transfer the sand core 9 into the first box body 51 of the purging unit 5 for surface floating sand purging, and meanwhile, the double-station turntable 12 rotates to rotate the empty sand core 9 mould 121 to the outside of the safety guardrail;

d. the robot 31 clamps the swept sand core 9 to the dip coating tank 21, the robot 31 immerses the sand core 9 into the dip coating tank 21 to enable the coating in the dip coating tank 21 to be attached to the surface of the sand core 21, and the robot 31 performs spin coating on the sand core 9 according to the set angle, speed, direction and times.

e. After the spin coating is finished, the robot 31 clamps and transfers the sand core 9 to the transfer roller assembly 71, and the next process is performed.

f. After the jig 32 holds the sand core 9 for a plurality of times to dip-coat the paint, the robot 31 drives the jig 32 to extend into the second box 41 of the cleaning device, and the holding block 326 is cleaned in water by the reciprocating motion of the robot 31 under the brushing of the brush 42.

Compared with the prior art, the automatic dip-coating production is carried out by matching with the robot 31, the continuous automatic processes of feeding, purging, spin-coating, conveying and cleaning the clamp 32 are included, and the coating does not need to be stirred periodically by manpower, so that the production efficiency and the casting product quality are greatly improved, and the labor cost is saved.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (10)

1. The utility model provides a full-automatic psammitolite dip-coating system which characterized in that: comprises a feeding unit, a dip-coating unit, a clamping unit, a cleaning unit and a control system electrically connected with each unit;

the feeding unit is used for providing sand core blanks;

the clamping unit is used for clamping and transferring the sand core and comprises a robot and a clamp which is arranged on the robot and used for taking the sand core;

the dip-coating unit is used for dip-coating the sand core and comprises a dip-coating module and a circulating module; the dip-coating module comprises a dip-coating pool, an overflow pool and a plurality of nozzles, wherein the dip-coating pool is arranged in the overflow pool, the overflow pool is provided with a liquid level meter, and the nozzles are arranged in the inner wall of the dip-coating pool; the circulation module comprises a diaphragm pump and a filter; the overflow tank is sequentially connected with the diaphragm pump and the filter pipeline, and a discharge port of the filter is connected with the nozzle;

the cleaning device is used for cleaning the clamp.

2. The full-automatic sand core dip-coating system of claim 1, further comprising a purging unit for purging the sand core before dip-coating, wherein the purging unit comprises a first box body, a purging nozzle, a first air control part, silencing cotton and a sand collecting groove, the box body is internally provided with an operation cavity, one side of the box body is provided with an operation opening, the purging nozzle is provided with a plurality of purging nozzles and is installed on the inner wall of the box body, the silencing cotton is arranged in the operation cavity, the first air control part is connected with the purging nozzle and is used for ventilating and purging the sand core, and the sand collecting groove is arranged below the collection opening of the box body.

3. The full-automatic sand core dip-coating system of claim 1, wherein the feeding unit comprises a base, a double-station turntable, a first driving mechanism, a supporting bearing and a positioning mechanism, the double-station turntable is mounted at the top of the base, the top surface of the double-station turntable is provided with a plurality of sand core molds for placing sand cores, the top surface of the sand core molds is provided with a positioning block, the bottom of the double-station turntable is provided with the supporting bearing and is rotatably connected with the base through the bearing, the first driving mechanism is connected with the double-station turntable and can drive the double-station turntable to rotate, and the positioning mechanism is used for completing positioning after single rotary motion.

4. The fully automatic sand core dip coating system of claim 3, wherein: the first driving mechanism comprises a first motor, a first gear, a second gear and a rotary bearing, the first motor is in transmission connection with the first gear, the second gear is meshed with the first gear, the rotary bearing is sleeved in the second gear, and the second gear is fixedly connected with the double-station rotary table.

5. The fully automatic sand core dip coating system of claim 3, wherein: positioning mechanism includes second actuating mechanism, retaining member and response piece, be equipped with the jack that corresponds the setting with the retaining member on the duplex position revolving stage, the response piece is equipped with one at least and installs in duplex position revolving stage one side for detect the rotational position of duplex position revolving stage, second actuating mechanism drive retaining member inserts the jack and fixes a position duplex position revolving stage.

6. The fully automatic sand core dip coating system of claim 1, wherein: the fixture comprises a connecting frame, a sliding rail mechanism, a third driving mechanism, a first clamping arm, a second clamping arm and a clamping block, wherein the connecting frame is connected with the output end of the robot, the sliding rail mechanism is installed on one side of the connecting frame, the first clamping arm and the second clamping arm are arranged on the sliding rail mechanism, the clamping block is arranged in pairs and installed on the first clamping arm and the second clamping arm, and the third driving mechanism is connected with the second clamping arm and can drive the second clamping arm to be close to the first clamping arm, so that the clamping block can clamp the sand core.

7. The fully automatic sand core dip coating system of claim 6, wherein: the clamp and the robot are detachably connected.

8. The fully automatic sand core dip coating system of claim 1, wherein: the cleaning device comprises a second box body and a brush, wherein a containing cavity is formed in the box body, a water inlet and a water outlet are formed in the side wall of the containing cavity, and the brush is installed in the containing cavity and fixed on the side wall of the box body.

9. The fully automatic sand core dip coating system of claim 1, wherein: still including the transfer roller subassembly that is used for the security fence of whole mechanical outside protection and is used for the psammitolite after the circulation dip-coating, duplex position revolving stage one side is located the security barrier and the opposite side is located outside the security barrier, transfer roller subassembly sets up the one side at the robot.

10. A full-automatic sand core dip-coating method is characterized by comprising the following steps: a method of dip coating a sand core comprising the use of the fully automatic system of dip coating a sand core as claimed in any one of claims 1 to 9, comprising the steps of:

a. an operator carries the sand core to a positioning block on a double-station rotary table, and starts a control system to start full-automatic dip-coating of the sand core;

b. the first driving mechanism drives the double-station rotary table to rotate, the placed sand cores are rotated into the safety fence, and the positioning mechanism positions and locks the double-station rotary table.

c. The robot is matched with the clamp to clamp the sand core and transfer the sand core into a first box body of the blowing unit to blow and sweep the floating sand on the surface, and meanwhile, the double-station turntable rotates to rotate the empty sand core mould to the outside of the safety guardrail;

d. and the robot clamps the swept sand core to a dip-coating tank, immerses the sand core into the dip-coating tank to enable the coating in the dip-coating tank to be attached to the surface of the sand core, and throws and coats the sand core according to the set angle, speed, direction and times.

e. After the spin coating is finished, the robot clamps and transfers the sand core to the conveying roller assembly, and the sand core is transferred to the next procedure.

f. After the clamp clamps the sand core for multiple times to dip-coat the coating, the robot drives the clamp to extend into a second box body of the cleaning device, and the clamping block is cleaned in water under the brushing of the brush through the back-and-forth action of the robot.

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