CN206516230U - Lost foam casting teaching training system - Google Patents

Abstract

Add sand molding station, cast station and knockout station the utility model discloses a kind of lost foam casting teaching training system, including for the sandbox automatic conveyor line conveyed to sandbox and on sandbox automatic conveyor line；Plus sand molding station is provided with above sandbox automatic conveyor line and to sandbox add the raining-type sand filling device of sand, and for the shake table to molding sand vibration ramming below sandbox automatic conveyor line；Cast station is provided with the negative pressure device vacuumized to sandbox；Knockout station is provided with the screening plant for molding sand screen recovery；Vacuum feed appliance the system that raining-type sand filling device is connected with the molding sand progress feeding after being screened to screening plant can simulate the whole technological process of lost foam casting, advanced technology, automaticity is high, illustrative is good, systemic strong, environment is clean and tidy, safe and reliable, operability and property of participation are high, are that school and research institution carry out teaching and training and the ideal chose of scientific research and development.

Description

Lost foam casting teaching training system

Technical field

The utility model is related to a kind of teaching equipment, more specifically, it relates to a kind of lost foam casting teaching and training system System.

Background technology

Lost foam casting（Also known as negative pressure dry sand cavityless casting）It is that foam mould takes out true using the combination of bindless molding sand The cavityless casting of empty technology, is to bond the bubbles model similar to casting dimension shape to be combined into model cluster, brushes fire resisting and apply After expecting and drying, vibration molding in drystone sand is embedded in, is poured into a mould under negative pressure, model is gasified, liquid metals occupies model position Put, the novel casting method of casting is formed after solidification cooling.

Compared with conventional casting technologies, lost foam casting has following features：

1, casting quality is good, and cost is low；

2, material is not limited, and size is all suitable；

3, dimensional accuracy is high, any surface finish, reduces cleaning, and saving machine adds；

4, internal flaw greatly reduces, dense structure；

5, extensive, production in enormous quantities can be achieved；

6, automatic assembly line is more environmentally friendly；

7, operating environment, reduction labor intensity can be substantially improved, energy resource consumption is reduced.

With the continuous maturation of technology, lost foam casting starts to be received by vast foundry enterprise, and as tradition casting The direction of enterprise transformation is made, but the Technology of EPC field talent is more deficient, each colleges and universities all lack a set of efficient training The hardware of the high talent, this becomes an obstacle of Technology of EPC popularization.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of lost foam casting teaching and training System, for Technology of EPC is to teaching and trains.

To achieve the above object, the utility model provides following technical scheme：A kind of lost foam casting teaching and training system System, it is characterized in that：Including for the sandbox automatic conveyor line conveyed to sandbox and on sandbox automatic conveyor line Plus sand molding station, cast station and knockout station；Described plus sand molding station, which is provided with, to be located above automatic conveyor line simultaneously Add the raining-type sand filling device of sand to sandbox and be used for the shake table to sandbox vibration ramming below automatic conveyor line；Institute State cast station and be provided with the negative pressure device vacuumized to sandbox；Knockout station is provided with the sieve for molding sand screen recovery Screening device；Described raining-type sand filling device is connected with the vacuum feed appliance that the molding sand after being screened to screening plant carries out feeding.

By using above-mentioned technical proposal, comprised the following steps using lost foam casting teaching training system：

（1）White molding is made, and dialogue mold base material carries out Numerical control cutting or hand cut, make Bai Mo shape with it is for molding Cast shape is identical；

（2）Brushing exotic material, last layer fire-proof high-temperature resistant material is coated in the white mould surface of shaping；

（3）Drying, the coating of dialogue mould surface is dried；

（4）Empty sandbox is transported to the underface of raining-type sand filling device by raining-type sand filling, automatic conveyor line, is put into model cluster Before in sandbox, raining-type sand filling device is first passed through in sandbox and spreads certain thickness molding sand, then model cluster is put into sandbox；From Shake table below dynamic pipeline is fixed with sandbox, opens raining-type sand filling device and uniformly adds sand to sandbox, while sand is added Vibration is opened, consolidation and the filling of molding sand are realized by micro- moulding of shaking, moulding is realized；

（5）Cast, sandbox leaves plus sand molding station along automatic conveyor line, is moved on cast station, passes through cast Negative pressure device on station is vacuumized to sandbox, while the casting of molten metal into sandbox；White mould contacting metal liquid gasification, institute The gas of generation is siphoned away by the vacuum pipe with sandbox automatic butt, and molten metal replaces white mould, the process for completing cast；

（6）Knockout, treats that the workpiece in sandbox is cooled to after appropriate temperature, moves to knockout station, and sandbox is default The casting of type is taken out by robot, and the molding sand unloaded is fallen on screening plant；

（7）Molding sand is reclaimed, and the molding sand drawn off is screened by screening plant, first using vibratory sieve, will be unnecessary miscellaneous Matter is removed, then qualified molding sand vacuum feed appliance will be used on molding sand into raining-type sand filling device.

After above-mentioned steps, the whole technological process of lost foam casting can be shown；Due to being particular about in teaching process Quick demonstration, therefore raining-type sand filling device carries out feeding by vacuum feed appliance, and its feeding speed is fast, meets in teaching process The requirement of a small amount of feeding, while floor space is smaller, the requirement to place of imparting knowledge to students is also than relatively low；The system is used compared to enterprise Sand preparing system, the floor space of the vibratory sieve in the system is smaller, and cost easy to use is also lower, while by screening Requirement of the molding sand afterwards when can also meet teaching to molding sand.

The utility model is further arranged to：Described knockout station, which is located at, to be added between sand molding station and cast station.

By using above-mentioned technical proposal, knockout station is arranged at and added between sand molding station and cast station, so The distance of screening plant and raining-type sand filling device can be shortened, vacuum feed appliance is when feeding, and the length of its feeding tube can be with Greatly shorten, and then increase the stability of vacuum feed appliance operation.

The utility model is further arranged to：Described sandbox bottom is provided with Xie Shamen mechanisms able to turn on or off, described Screening plant is located at the lower section of automatic conveyor line.

By using above-mentioned technical proposal, the bottom of sandbox is able to turn on or off, by opening Xie Shamen mechanisms by the type in sandbox Sand is drawn off, and molding sand is fallen on the vibratory sieve of screening plant, and the keying of Xie Shamen mechanisms can unload sand door machine using manual operation Structure, can also control the keying of Xie Shamen mechanisms using mechanical structure, need not be used during molding sand is drawn off driving or Other instruments, it is low that the professional skill requirement to operator is also compared, the security during increase teaching and training.

The utility model is further arranged to：Described knockout station is turned on and off provided with driving Xie Shamen mechanisms Door opening and closing mechanism.

By using above-mentioned technical proposal, the Xie Shamen mechanisms of sandbox are arranged to the structure that can be pulled and pushed, and sandbox moves to When on sand station, sand door mechanism opening will be unloaded by door opening and closing mechanism, draw off the sand cast in sandbox, gate operator The keying of structure control Xie Shamen mechanisms, the keying of Xie Shamen mechanisms is controlled without manually, to artificial during reduction use Rely on.

The utility model is further arranged to：Described cast station is provided with the robot poured into a mould sandbox.

By using above-mentioned technical proposal, the molten metal under molten condition is poured into sandbox using robot, reduced Manually-operated danger, and improve the accuracy and quality of cast.

The utility model is further arranged to：It is all provided with described plus sand molding station, cast station and knockout station Dust shield is equipped with, described dust shield is connected by cleaning shaft with deduster, and deduster is communicated with to the air after dedusting The exhaust gas processing device further handled.

By using above-mentioned technical proposal, due to can all there is dust generation during sand, cast, knockout is added, pass through The setting of dust shield and deduster, the dust for siphoning away lost foam casting teaching training system produced by operation, favorably In the environmental quality for keeping teaching place, dust is entering one by exhaust gas processing device after deduster processing to waste gas Step processing, gets rid of the pernicious gas produced by after Bai Mo gasifies, and air after treatment is discharged into air, met again The requirement of green discharge.

The utility model is further arranged to：Described automatic conveyor line includes the sand described in two parallel delivery tracks Bottom portion is provided with roller；It is provided between sandbox and delivery track on pitch wheel rack, described sandbox and is additionally provided with drive The movable motor that moving gear is rotated.

By using above-mentioned technical proposal, the motor conjunction gear wheel and rack on sandbox is entered by rotating the number of turns to motor Row control, any one accurate position that sandbox can be made to move on automatic conveyor line facilitates in training process to sandbox Carry out accurately individually control.

The utility model is further arranged to：Described shake table upper surface is provided with clamping body, the shake table Side is provided with the motor of the vibrator being obliquely installed and driving vibrator work.

By using above-mentioned technical proposal, sandbox is placed on vibration table surface, and vibrator is high under the drive of motor Speed rotation vibrates shake table, and molding sand produces circular motion in sandbox, reduces molding sand linear displacement and cast model is broken Bad property is impacted, and makes molding sand filling more consolidation, and filling effect is good, improves the quality of cast casting.

The utility model is further arranged to：Also include the vacuum pump set that negative pressure is provided to whole system.

By using above-mentioned technical proposal, all negative-pressure vacuums in lost foam casting teaching training system are by vacuum machine Group is provided and automatically controlled, and increases the integration of system, is easy to carry out system overall coordination.

Compared with prior art, the utility model provides a kind of lost foam casting teaching training system, for evaporative pattern The teaching of casting technique, whole system according to the characteristics of teaching, training complete a whole set of pouring technology on the premise of carried out it is excellent Change；Raining-type sand filling device is carried out plus sand by vacuum feed appliance, plus sand is rapid；Adding the lower section of sand molding station using vertical circle All shake tables, make the molding sand in sandbox obtain sufficient consolidation, and then increase the quality of cast casting；The motion process of sandbox is From adding sand molding station to enter cast station, the knockout station between two stations is returned, one is completed and entirely cast Journey, returns to the casting for adding sand molding station to carry out next time by knockout station after completion, and so on circulates, sandbox itself With dynamic, it is not necessary to the intervention of manpower, operation is light, increases security；Whole system has the place for producing dust to be respectively provided with Dust shield, the dust of absorption carries out dedusting by deduster, after the completion of dedusting, after having been handled by exhaust gas processing device, Discharged, keep the health in teaching place.

Brief description of the drawings

Fig. 1 is the structure chart in the workshop for being provided with lost foam casting teaching training system；

The top view for the lost foam casting teaching training system that Fig. 2 is；

Fig. 3 is the side view of middle lost foam casting teaching and training system；

Fig. 4 is the structural representation of middle shake table；

The structural representation of Fig. 5 exhaust gas processing devices.

Reference：1st, automatic conveyor line；11st, delivery track；2nd, sand molding station is added；21st, raining-type sand filling device；22nd, shake Dynamic platform；221st, base；222nd, column；223rd, air bag；224th, vibrating motor；225th, vibrator；226th, claw；23rd, vacuum feeding Device；231st, feeding tube；3rd, knockout station；31st, vibratory sieve；32nd, door opening and closing mechanism；4th, station is poured into a mould；41st, negative pressure device；42、 Negative pressure distributor；5 resistance furnaces；6th, sandbox；7th, vacuum pump set；8th, deduster；81st, cleaning shaft；82nd, dust shield；9th, at tail gas Manage device；91st, housing；92nd, air inlet pipe；93rd, screen pack；94th, filtering agent.

Embodiment

As shown in Figure 1, a kind of lost foam casting teaching training system, including automatic conveyor line 1, in automatic conveyor line 11 On set gradually plus sand molding station 2, knockout station 3 with cast station 4, control whole system operation centralized Control cabinet, PLC is controlled, touch screen operation.

Automatic conveyor line 1 includes two delivery tracks 11 be arrangeding in parallel, and the bottom of sandbox 6 is provided with and delivery track 11 The roller of mutual cooperation, for making the movement smooth on automatic conveyor line 1 of sandbox 6；Have on automatic conveyor line 1 along conveyor track Rack on the length direction of road 11, sandbox 6 is provided with movable motor, and movable motor uses servomotor or stepper motor, by watching Take motor or driving stepper motor sandbox 6 is moved, can so allow sandbox 6 accurately to reach by control system automatic defeated The optional position of line sending 1, is easy to the walking to sandbox 6 to be controlled；Reduction box can be set up between sandbox 6 and walking gear, By the setting of reduction box, gear is set to obtain bigger moment of torsion.

Plus sand molding station 2, including the raining-type sand filling device 2 positioned at the top of automatic conveyor line 1, drenched with rain when sandbox 6 is moved to , can be by raining-type sand filling device 2 to being added molding sand in sandbox 6 when the underface of sand-adding device 2；Raining-type sand filling device 2 Effect is that itself plus sand speed are fast, plus sand is more uniformly filled in each position of model, can fully cover and be positioned in sandbox 6 White mould, the impact of dialogue mould is small, reduce plus sand during the model deformation that produces, be easy to the abundant patch between molding sand and white mould Close, reduce the generation in space, be finally reached the purpose for the quality for improving casting；Shake table is provided with the bottom of automatic conveyor line 1 22, the clamping body of the upper surface of shake table 22, raining-type sand filling device 2 is carried out during adding sand to sandbox 6, and shake table 22 has one Fixed lifting, makes sandbox 6 depart from automatic conveyor line 1, the vibrating motor 224 and vibrator 225 set by the lower section of shake table 22 Work, make shake table 22 drive sandbox 6 vibrated, sandbox 6 vibration and raining-type sand filling device 2 carries out simultaneously, in raining-type sand filling During device 2 plus sand, in the presence of vibration force, molding sand is set to realize dynamic flowing in sandbox 6, between molding sand and molding sand Gap and molding sand and white mould between gap can gradually be eliminated, realize the mutual consolidation between molding sand and white mould, subtract Few casting flaw.

Shake table 22 includes being provided with column 222 on base 221, base 221, and the end of column 222 is provided with air bag 223, card machine mechanism is provided with the top of the table top of shake table 22, card machine mechanism is the claw 226 of pneumatic control, when sandbox 6 is moved Move when add on sand molding station 2, air bag 223 is inflated, and sandbox 6 is carried out into lifting, sandbox 6 is taken off with delivery track 11 From sandbox 6 is clamped by claw 226 under the driving of air pressure；Vibrating motor 224 is provided with base 221, in shake table Vibrator 225 is fixed with 22 table top, by the effect of vibrator 225, drives sandbox 6 to vibrate.

Station 4 is poured into a mould, bleeding point is provided with sandbox 6, there is negative pressure device 41 on cast station 4, for sand Case 6 is vacuumized, and realizes that carried out to the molding sand in sandbox 6 by vibration ramming between secondary consolidation, increase molding sand quiet rubs Wipe power,；When sandbox 6 is moved on cast station 4, the resistance furnace 5 equipped with molten metal bath is transported under the effect of driving Move on cast station 4, sandbox 6 poured into a mould, during cast, Bai Mo gasifies in the presence of high-temperature liquid metal, And the gas produced by the white mould gasified can be siphoned away by negative pressure device 41, mutually putting between molten metal and white mould is finally completed Change, complete the shaping of casting；Negative pressure distributor 42, which is provided with, in negative pressure device 41 carries out vacuum frequency modulation automatic Regulation.

Knockout station 3 be located at cast station 4 and add sand molding station 2 between, so set after, pour into a mould station 4 be located at The end of automatic conveyor line 1, such resistance furnace 5 is that can be installed on the side of automatic conveyor line 1, can also be located at automatic defeated The end of line sending 1, its position set can have more selections, the present embodiment it is preferred resistance furnace 5 is arranged on it is automatic defeated Position in front of the end of line sending 1, can so make resistance furnace 5 away from evaporative pattern teaching and training system, also be learned far away from participation Security in the students and teacher of habit, increase teaching process.Because knockout station 3 is closer to sand molding station 2 is added, so The length of the feeding tube 231 of vacuum feed appliance 23 can be reduced, so as to increase the stability of the feeding of vacuum feed appliance 23；When sandbox 6 Completed on knockout station 3 after knockout, the casting technique for adding sand molding station 2 to carry out next time can be returned to faster, increased Plus the efficiency in teaching process.

Knockout station 3, sandbox 6 can be entered by knockout station 3 and poured after adding sand molding station 2 to complete to add sand molding Note station 4 is poured into a mould, and now sandbox 6 is when by knockout station 3, merely by sandbox 6 can't be in fettler Position 3 stops；And sandbox 6 is moved to knockout station 3 and carries out discharging after the cast complete cast of station 4, by opening for the bottom of sandbox 6 Mouth is opened, and the molding sand in sandbox 6 and casting are discharged；Due to by the way of the knockout of bottom, can effectively reduce dust Generation, while open and close Xie Shamen mechanisms using door opening and closing mechanism 32, reduce during use to artificial dependence, it is above-mentioned Door opening and closing mechanism 32 it is simple in construction, the cost of the manufacturing is relatively low.

The lower end of automatic conveyor line 1 at knockout station 3 is provided with vibratory sieve 31, molding sand and casting that the bottom of sandbox 6 is drawn off Or the top of vibratory sieve 31 is dropped into, granular size is accorded with satisfactory molding sand and screened by vibratory sieve 31 by vibration, is closed The molding sand of lattice drops into the conveyer belt of the lower section of vibratory sieve 31 by vibratory sieve 31, is sent to by conveyer belt on vacuum feed appliance 23, The molding sand that can not be re-used can be left on the top of vibratory sieve 31；Vacuum feed appliance 23 is connected with raining-type sand filling device 2, for rain Drench sand-adding device 2 and carry out feeding, because the utility model is mainly used in imparting knowledge to students, therefore the requirement to molding sand is not special height, Compared to the sand preparing system in enterprise, the sand filtration system in the utility model, structure is more simple, to molding sand processing Efficiency is fast, and equipment cost is lower, meets the use of teaching.

Dust shield 83 is provided with the above-mentioned position that can produce dust, reducing among dust is dispersed into air influences teaching Environment, influences the health of student teacher.Several dust shields 83 are connected on same cleaning shaft 81 simultaneously, and dust shield 83 is inhaled The dust entered is entered by cleaning shaft 81 and is removed dust on deduster 8, as preferred, and deduster 8 uses arteries and veins Rush blowback dust-removal cloth-bag and carry out dedusting, because the dedusting method is this area more conventional technique, it will not go into details herein.Except Dirt device 8 is additionally arranged exhaust gas processing device 9, and exhaust gas processing device 9 is connected with the offgas outlet of deduster 8, and exhaust gas processing device 9 is wrapped Housing 91 is included, housing 91 is provided with the air inlet pipe 92 connected with the offgas outlet of deduster 8, and air inlet pipe 92 is inserted into inside housing 91, Air inlet pipe 92 is located at one section of housing 91 and is provided with an inclined otch, and screen pack 93 is secured in the top of housing 91, Filtering agent 94 is mounted with screen pack 93, the setting down of the end of air inlet pipe 92 is so provided for making tail gas first pass through housing The chamber of 91 lower sections, makes the larger dust of some particles be precipitated in following chamber, reduces the dependence to filtering agent 94；From dedusting The tail gas that device 8 comes out is entered in housing 91 by air inlet pipe 92, is entered by 94 two kinds of filter mediums of screen pack 93 and filtering agent Row filtering, a small amount of dust and other pernicious gases for removing doping in tail gas is reabsorbed, so that the discharge symbol of tail gas The requirement that cyclization is protected, reduces pollution of the tail gas to air.

Wherein negative pressure device 41, dust arrester, the negative pressure of vacuum feed appliance 23 are provided by vacuum pump set 7, there is single Vacuum pump set 7 provides negative pressure to whole system, is easy to control system to be controlled negative pressure, can effectively increase the utilization of the energy Rate, while single vacuum pump set 7 is easier to make for safeguarding.

The technical process cast using evaporative pattern teaching and training system is as follows：

By using above-mentioned technical proposal, comprised the following steps using lost foam casting teaching training system：

（1）White molding is made, and dialogue mold base material carries out Numerical control cutting or manually cut, produce Bai Mo shape with Cast shape for molding is identical；

（2）Brushing exotic material, last layer fire-proof high-temperature resistant material is coated in the white mould surface of shaping；

（3）Drying, the coating of dialogue mould surface is dried；

（4）Empty sandbox 6 is transported to the underface of raining-type sand filling device 2 by raining-type sand filling, automatic conveyor line 1, in Bai Mofang Before in sandbox 66, raining-type sand filling device 2 is first passed through in sandbox 6 and spreads certain thickness molding sand, then white mould is put into sandbox 6 It is interior；The shake table 22 of the lower section of automatic conveyor line 1 is fixed with sandbox 6, opens raining-type sand filling device 2 and uniformly adds sand to sandbox 6, Plus vibration is opened while sand, eliminate the gap between molding sand and white mould in sandbox 6；

（5）Cast, sandbox 6 leaves plus sand molding station 2 along automatic conveyor line 1, is moved on cast station 4, passes through Negative pressure device 41 on cast station 4 is vacuumized to sandbox 6, while the casting of molten metal into sandbox 6；White mould contacting metal Liquid gasifies, and produced gas is inserted to be siphoned away with the vacuum tube on sandbox 6, and molten metal replaces white mould, is formed and white mould shape The same casting, the process for completing cast；

（6）Knockout, treats that the workpiece in sandbox 6 is cooled to after appropriate temperature, sandbox 6 to add sand molding side move, Knockout station 3 is moved to, by the molding sand in sandbox 6 by together drawing off, the molding sand drawn off is fallen on screening plant；

（7）Molding sand is reclaimed, and the molding sand drawn off is screened by screening plant, it is preferred to use vibratory sieve 31, will be unnecessary Impurity remove, qualified molding sand is gathered on a container, by vacuum feed appliance 23 will on molding sand arrive raining-type sand filling device Used in 221.

Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of lost foam casting teaching training system, it is characterized in that：It is automatically defeated including the sandbox for being conveyed to sandbox Line sending and adding sand molding station, pouring into a mould station and knockout station on sandbox automatic conveyor line；Described plus sand molding Station, which is provided with, to be located above automatic conveyor line and sandbox is carried out to add the raining-type sand filling device of sand and under automatic conveyor line Side is used for the shake table to sandbox vibration ramming；The cast station is provided with the negative pressure device vacuumized to sandbox；Fall Sand station is provided with the screening plant for molding sand screen recovery；Described raining-type sand filling device is connected with to after screening plant screening Molding sand carry out feeding vacuum feed appliance.

2. lost foam casting teaching training system according to claim 1, it is characterized in that：Described knockout station, which is located at, to be added Between sand molding station and cast station.

3. lost foam casting teaching training system according to claim 1, it is characterized in that：Described sandbox bottom is provided with Xie Shamen mechanisms able to turn on or off, described screening plant is located at the lower section of automatic conveyor line.

4. lost foam casting teaching training system according to claim 3, it is characterized in that：Described knockout station is provided with The door opening and closing mechanism that driving Xie Shamen mechanisms are turned on and off.

5. lost foam casting teaching training system according to claim 1, it is characterized in that：Described cast station be provided with into The robot of row cast.

6. lost foam casting teaching training system according to claim 1, it is characterized in that：Described plus sand molding station, Dust shield is provided with cast station and knockout station, described dust shield is connected with deduster by cleaning shaft, removed Dirt device is communicated with the exhaust gas processing device further handled the gas after dedusting.

7. lost foam casting teaching training system according to claim 1, it is characterized in that：Described automatic conveyor line includes Sandbox bottom described in two parallel delivery tracks is provided with roller；Pitch wheel is provided between sandbox and delivery track The movable motor of drive gear rotation is additionally provided with rack, described sandbox.

8. lost foam casting teaching training system according to claim 1, it is characterized in that：The shake table upper surface is provided with The vibrator being obliquely installed is provided with below clamping body, the shake table.

9. lost foam casting teaching training system according to claim 1, it is characterized in that：Also include providing to whole system The vacuum pump set of negative pressure.

10. lost foam casting teaching training system according to claim 1, it is characterized in that：Also include control whole system The centralized Control cabinet of operation, PLC controls, touch screen operation.