CN204799878U - Sand device is called to volume for former fast - Google Patents

Abstract

The utility model relates to a sand device is called to volume for former fast, it includes: sand the control unit is called to a portable top cap, one jar of body, a discharge gate valve, air intercommunication mouth, a feed inlet valve and volume, jar body be a drum structure, this tubular structure have an inner wall and with this relative outer wall in inner wall surface, this feed inlet valve and air intercommunication mouth all set up in on the portable top cap and interval sets up, the discharge gate valve set up in the jar body is kept away from one side of portable top cap, this volume call that sand the control unit is connected with discharge gate valve and feed inlet valve respectively for control opening and closing of discharge gate valve and feed inlet valve, wherein, be provided with the annular groove of a plurality of parallels on the inner wall of jar body, the drum central axis direction of place plane this jar of body of perpendicular to of this annular groove, this portable top cap set up in on the annular groove, and with the jar bodily form becomes the adjustable enclosure space of a volume.

Description

Rapid forming equipment volume claims sand device

Technical field

The utility model relates to a kind of volume and claims sand device, and particularly a kind of rapid forming equipment volume claims sand device.

Background technology

Rapid shaping technique is the new technique grown up in the late nineteen eighties, and this technology is the forming principle based on discrete dynamics models, and the digital information of part is automatically converted to corresponding physical entity.Rapid shaping technique, on the basis of rapid shaping principle, is applied to traditional Reform of Resin Sand Casting fabrication technique, have developed Patternless casting manufacturing equipment by Tsing-Hua University's laser fast shaping center.Compare with common Casting mold manufacturing technology, Patternless casting manufacturing technology has unrivaled superiority, and it is not only increasingly automated, the quick words of casting process, reduces labor strength, and the constraints manufactured and designed is greatly reduced.

Existing non-model sand mold manufacturing system generally comprises molding sand storage device, claims the molding sand treatment system of sand device, mixing arrangement.But, sand device is claimed to adopt quality weighing method described in prior art, its heavy return of value error of sand produced because of deadweight, considerable influence can be produced to catalyst charge, and this quality claims sand device comparatively responsive to mechanical oscillation, mass sensor can be made to produce outrange to higher air pressure fluctuation and report an error, cause catalyst pump continuous firing, modeling process is stagnated, and greatly have impact on the fluency of modeling process.

Utility model content

In view of this, necessary provide a kind of not by deadweight, vibration effect title sand device.

A kind of rapid forming equipment volume claims sand device, it comprises: a movable top cover, one tank body, one discharging opening valve, one air communication mouth, one charging aperture valve and a volume claim sand control unit, described tank body is a cylindrical structure, this tubular structure has an inwall and an outer wall relative with this inner wall surface, described charging aperture valve and described air communication mouth are all arranged on described movable top cover and interval and arrange, described discharging opening valve is arranged at the side of described tank body away from described movable top cover, described volume claims sand control unit to be connected with discharging opening valve and charging aperture valve respectively, for controlling the opening and closing of discharging opening valve and charging aperture valve, wherein, the inwall of described tank body is provided with multiple parallel annular groove, the place plane of described annular groove is vertical with cylinder center's direction of principal axis of this tank body, described movable top cover is arranged at any one in described annular groove, and form the adjustable enclosure space of a volume with described tank body.

Compared with prior art, the volume that the utility model provides claims sand device to have the following advantages: one, on described tank body by arranging multiple annular groove, and coordinate the use of this movable top cover, this volume is made to claim the volume range ability Modulatory character of sand device strong, the convenient user's use required different volumes; Two, described volume claims the weighing of sand device not affect by factors such as deadweight, vibrations, and certainty of measurement is higher.

Accompanying drawing explanation

The rapid forming equipment volume that Fig. 1 provides for the utility model claims sand device.

The rapid forming equipment sand preparing system that Fig. 2 provides for the utility model.

What Fig. 3 provided for the utility model fetches and delivers sand device.

The retracting device that Fig. 4 provides for the utility model.

The storage sand device that Fig. 5 provides for the utility model.

The workflow diagram of the rapid forming equipment sand preparing system that Fig. 6 provides for the utility model.

Main element symbol description

Rapid forming equipment sand preparing system	100
		Fetch and deliver sand device	10
Air pump	101
		Upper volume bound sensor	102
Pre-sand tank body	103
		Volume lower limited sensor	104
Shake out valve	105
		Dirt every	106
Sand-feeding tube	107
		Volume claims sand device	20
Movable top cover	201
		Annular groove	202
Tank body	203
		Discharging opening valve	204
Air communication mouth	205
		Charging aperture valve	206
Volume claims sand control unit	207
		Mixing device	30
Sanding gear	40
		Sanding bucket	401
Retracting device	50
		Offgas outlet	501
Heating tube	502
		Vibratory sieve	503
Sand material exports	504
		Collection box	505
Storage sand device	60
		Charge door	601
Stir conveyer	602
		Tilting baking base plate	603
Discharging opening	604
		Feedback outlet	605、606
Sand reservoir box	607
		Shaped platform	70
Catalyst pump	80
		Control device	90

Following specific embodiment will further illustrate the utility model in conjunction with above-mentioned accompanying drawing.

Detailed description of the invention

Below in conjunction with specific embodiment, the rapid forming equipment volume that the utility model provides is claimed to sand device and adopts the rapid forming equipment sand preparing system of this device to be described in further detail.

Refer to Fig. 1, the utility model provides a kind of rapid forming equipment volume to claim sand device 20, and this volume claims sand device 20 to comprise a movable top cover 201, one tank body 203, discharging opening valve 204, air communication mouth 205, one charging aperture valve 206, and a volume claims sand control unit 207.Described tank body 203 is a cylindrical structure, has an inwall and an outer wall relative with this inner wall surface.The inwall of described tank body 203 is provided with multiple parallel annular groove 202, the cross section orthogonal of described annular groove 202 is in cylinder center's direction of principal axis of this tank body 203.Described movable top cover 201 is arranged on described annular groove 202, and forms the adjustable enclosure space of a volume with described tank body 203.Described charging aperture valve 206 and described air communication mouth 205 are all arranged on described movable top cover 201 and interval and arrange.Described air communication mouth 205 is provided for tank interior and keeps air communication with extraneous.Described discharging opening valve 204 is arranged at described tank body 203 one end away from described movable top cover 201.Described volume claims sand control unit 207 to be connected with discharging opening valve 204 and charging aperture valve 206, for controlling the opening and closing of described discharging opening valve 204 and charging aperture valve 206.

Described movable top cover 201 is arranged on described annular groove 202.Particularly, this movable top cover 201 directly can be arranged at any one in described multiple annular groove 202, for forming the adjustable enclosure space of a volume with described tank body 203.When claiming in described tank body 203 that sand body is long-pending to be needed to change, this movable top cover 201 can switch to coordinate in described tank body 203 change claiming sand body long-pending in described multiple annular groove 202.Particularly, described movable top cover 201 is of a size of an adjustable dimension, to adapt to move up and down in described tank body 203, and with described annular groove compact siro spinning technology.

Described tank body 203 is a cylindrical structure, and this cylindrical structure has an inwall and an outer wall relative with this inwall.The inwall of described tank body 203 is provided with multiple parallel annular groove 202, and the place plane of described annular groove 202 is vertical with cylinder center's direction of principal axis of this tank body 203.Particularly, described any two adjacent annular grooves 202 within the barrel on axle direction distance identical, namely described multiple annular groove 202 is divided into the identical tubular unit of multiple volume this tank body 203.When described movable top cover 201 is arranged on different annular grooves 202, the plurality of tubular unit can be used to the Volume Changes scope calculating this tank body 203.

Described charging aperture valve 206 and described air communication mouth 205 are all arranged on described movable top cover 201 and interval and arrange.Described charging aperture valve 206 is for claiming sand device 20 to load molding sand to described volume, and this charging aperture valve is in normally open.Described air communication mouth 205 for eliminating this tank body 203 inner air and outer air pressure influence, to ensure that molding sand can be full of this tank body 203.Described discharging opening valve 204 is arranged at described tank body 203 one end away from described movable top cover 201 for shaking out.This discharging opening valve 204 is in normally off, and when needs shake out, this discharging opening valve 204 is opened.

Described volume claims sand control unit 207 to control the opening and closing of described discharging opening valve 204 and charging aperture valve 206.This volume claims sand control unit can comprise a time relay (not indicating in figure), the set of time of this time relay by theory of computation value and test of many times obtain, then gained theoretical value is carried out the relation formula that data statistics obtains one group of time and sand production volume, i.e. T=α V.Wherein, factor alpha is relevant with the area of section of discharging opening valve 204, and when area of section one timing of discharging opening valve 204, α is fixed value, all supposes that the area of section of this discharging opening valve 204 is definite value below the utility model.User then can calculate required time according to required sand production volume, then on this time relay, arranges required time.Because the described volume shaked out is only relevant with the time of shaking out, and by the impact of other factors such as deadweight, vibration, can not can significantly improve weighing precision.

The volume that the utility model provides claims sand device 20, have the following advantages: one, on described tank body 203 by arranging multiple annular groove 202, and coordinate the use of this movable top cover 201, this volume is made to claim the volume range ability Modulatory character of sand device 20 strong, the convenient user's use required different volumes; Two, described volume claims the weighing of sand device 20 not affect by factors such as deadweight, vibrations, and certainty of measurement is higher.

Refer to Fig. 2, the utility model also provides a kind of rapid forming equipment sand preparing system 100 adopting above-mentioned volume to claim sand device 20, this sand preparing system 100 comprises: one fetches and delivers sand device 10, one volume claims sand device 20, one mixing device 30, sanding gear 40, retracting device 50, do not indicate in one shaped platform 70, catalyst pump 80 and a control device 90(figure).Described sand device 10 of fetching and delivering is for extracting and conveying molding sand.Described volume claims sand device 20 and this to fetch and deliver sand device 10 to be connected.Described mixing device 30 and described volume claim sand device 20 to be connected, for being mixed by the curing agent in molding sand and catalyst pump 80.Described sanding gear 40 is connected with described mixing device 30, for mixed molding sand being laid on described shaping flat 70 platforms.Described shaped platform 70 is positioned at the side of described sanding gear 40 away from described mixing device 30, for carrying the molding sand that this sanding gear 40 is laid.Described catalyst pump 80 for carrying curing agent in described mixing device 30, to mix with molding sand.Described control device 90 fetches and delivers sand device 10 with described respectively, volume claims sand device 20, mixing device 30, sanding gear 40, retracting device 50, catalyst pump 80 are connected, and normally works to regulate and control each device.

Refer to Fig. 3, described in fetch and deliver sand device 10 and comprise pre-sand tank body 103, the volume lower limited sensor 104, of air pump 101, upper volume bound sensor 102, and to shake out valve 105, a dirt is every 106 and a sand-feeding tube 107.Described air pump 101 is arranged at the top of described pre-sand tank body 103, and form an enclosed construction with this pre-sand tank body 103, described dirt is arranged between described air pump 101 and described pre-sand tank body 103 every 106, and contact with described pre-sand tank body 103 with this air pump 101 respectively and arrange, this dirt is to prevent molding sand from entering in air pump, affecting air pump and normally work every 106.Described air pump 101 can produce negative pressure, to guarantee that molding sand can continue through described sand-feeding tube 107 and enter in this pre-sand tank body 103 under the prerequisite of not interruption of work, and adopt suction type conveying molding sand, resistance is less, and the molding sand produced is piled up, the phenomenon of caking to there will not be employing malleation to carry.The sidewall that described upper volume bound sensor 102 and volume lower limited sensor 104 are arranged at this pre-sand tank body 103 is respectively connected with control device 90, whether has reached upper volume bound or volume lower limit for the volume responding to molding sand in this pre-sand tank body 103.The particular location on sidewall of described upper volume bound sensor 102 and volume lower limited sensor 104 can set as required.The described valve 105 that shakes out is arranged at the bottom of described pre-sand tank body 103.

During use, when in described pre-sand tank body 103, molding sand reaches this volume lower limited sensor 104, described volume lower limited sensor 104 return of value instruction lacks material, by this control device 90 return of value to air pump 101, this air pump 101 acknowledge(ment) signal also starts, the negative pressure that described air pump 101 manufactures can make molding sand enter in this pre-sand tank body 103 by sand-feeding tube 107, and when upper volume bound sensor returns overflow value, this air pump 101 quits work.

Described volume claims the structure of sand device 20 as previously mentioned.Described charging aperture valve 206 is communicated with the described valve 105 that shakes out fetching and delivering sand device 10, and is in normally open; Described discharging opening valve 204 is communicated with described mixing device 30, and is in normally off.When the built-in sensors in described sanding gear 40 returns scarce material value, described charging aperture valve 206 is closed, described discharging opening valve 204 is opened, described volume claims the molding sand in sand device just to fall into described mixing device 30, when after arrival setting-up time, described discharging opening valve 204 is closed, and described charging aperture valve 206 is opened.

Mixed molding sand for being mixed with curing agent by the molding sand claiming from volume sand device 20 to fall into and stirring, and is passed to described sanding gear 40 by described mixing device 30.Described sanding gear 40 comprises a sanding bucket 401, for molding sand being evenly laid in the surface of described shaped platform 70.

Refer to Fig. 4, comprise a retracting device 50 further, described retracting device 50 is positioned at the both sides of this shaped platform 70, for reclaiming molding sand unnecessary in process of deployment.Described retracting device 50 comprises offgas outlet 501, heating tube 502, vibratory sieve 503, sand material outlet 504 and a collection box 505.Described offgas outlet 501 is arranged on the sidewall of described collection box 505, is reclaiming for discharging the waste gas produced in the process of antiquated sand.Described vibratory sieve 503 comprises Multilayer vibrating screen unit, and it is inner to be arranged at described collection box.Described heating tube 502 is arranged between described Multilayer vibrating screen, for heating and dry described antiquated sand.Described heating tube 502 and described vibratory sieve 503 with the use of, can make described antiquated sand can full and uniform drying, and make described curing agent fully to decompose or to gasify.Described sand material outlet 504 discharges this collection box 505 for the molding sand after described vibratory sieve 503 and heating tube 502 being processed.

Refer to Fig. 5, further, comprise a storage sand device 60, described storage sand device 60 comprises a charge door 601, and stirs conveyer 602, tilting baking base plate 603, discharging opening 604, feedback outlet 605, a 606 and sand reservoir box 607.This tilting baking base plate 603 is obliquely installed in described sand reservoir box 607 inner, and described stirring conveyer 602 is positioned at the inclined surface of this tilting baking base plate 603.Described charge door 601 and described feedback outlet 605,606 are positioned at the top surface of described sand reservoir box 607, and this feedback outlet 605,606 exports 504 with the sand material of described retracting device 50 is connected.Described stirring conveyer 602 is to make described molding sand can keep loose and uniform particles, preventing caking phenomenon.Described tilting baking base plate 603 is the moisture in order to remove in molding sand, keeps molding sand dry.This stirring conveyer 602 and tilting baking base plate 603 with the use of, described molding sand can be made to stablize conveying.Described discharging opening 604 is connected with the described sand-feeding tube 107 fetching and delivering sand device 10.

Described shaped platform 70, for carrying the molding sand of laying, described shaped platform 70 can preset a solid shape, forms desired structure to enable described molding sand.Described catalyst pump 80 is connected with described mixing device 30, for carrying curing agent in this mixing device 30.This catalyst pump 80 is connected with control device 90, and the instruction timing that the time of described conveying curing agent can send according to control device 90 is carried, and the amount of described conveying curing agent can claim the molding sand bulking value returned in sand device 20 to carry in proportion according to described volume.

Described control device 90 comprises multiple control unit, the plurality of control unit respectively with fetch and deliver sand device 10, volume claims sand device 20, mixing device 30, sanding gear 40, retracting device 50, catalyst pump 80 are connected.Described control device 90 controls each control unit by a PLC, and wherein, described " PLC " is the english abbreviation of programmable logic controller (PLC) (ProgrammableLogicController).

The rapid forming equipment sand preparing system 100 that the utility model provides, have the following advantages: one, this system 100 adopts suction type to send sand method, can complete under the prerequisite of not interruption of work and continue to send sand work, and there will not be molding sand to pile up in course of conveying, the phenomenon of caking; Two, this system 100 adopts volume to claim sand device not affect by factors such as deadweight, vibrations, and certainty of measurement improves; Three, adopt retracting device can significantly reduce antiquated sand amount, reduce production cost, realize green production.

Refer to Fig. 6, the course of work of the rapid forming equipment sand preparing system 100 that the utility model provides comprises the following steps:

S1, starts this sand preparing system 100, gets sanding bucket 401 built-in sensors return of value, and return of value is that in 1 expression sanding bucket, slow material can carry out sanding, if return of value is lack material in 0 expression sanding bucket, then proceeds next step;

S2, in described sanding bucket 401, the signal of scarce material can pass to the volume lower limited sensor 104 on pre-sand tank body 103 automatically, and when this volume lower limited sensor 104 return of value is 1, the valve 105 that shakes out of described pre-sand tank body 103 is closed; When this volume lower limited sensor 104 return of value is 0, when described air pump 101 upper volume bound sensor 102 return of value started in work to described pre-sand tank body 103 is 1, the valve 105 that shakes out of described pre-sand tank body 103 is closed;

Because shake out valve 105 and the described volume of described pre-sand tank body 103 claim the charging aperture valve 206 of sand device 20 to be in normally open, when described volume lower limited sensor 104 return of value is 1, show that described volume claims sand device 20 Sand to be full state, at this moment, claim sand device 20 normally to work for convenience of this volume, the valve 105 that shakes out of described pre-sand tank body 103 is closed.When described volume lower limited sensor 104 return of value is 0, show that described volume claims in sand device 20 for lacking material state, at this moment described air pump 101 starts, start to get sand in pre-sand tank body 103 from storage sand device 60, when described upper volume bound sensor 102 return of value is 1, show that this volume claims to be full of molding sand in sand device 20, air pump 101 quits work, and the valve 105 that shakes out of described pre-sand tank body 103 is closed;

S3, while valve 105 closedown of shaking out of described pre-sand tank body 103, this volume claims the discharging opening valve 204 of sand device 20 to open, and catalyst pump starts simultaneously, and mixing device starts, and completes a mulling; And

S4, gets sanding bucket 401 built-in sensors return of value again, and when return of value is 0, return to and work on to S2 step, when return of value is 1, described sanding gear 40 starts, and starts sanding work.

S5, after sanding work starts, described retracting device 50 starts, until sanding end-of-job with the beginning of sanding work.

In addition, those skilled in the art also can do other change in the utility model spirit, and these changes done according to the utility model spirit, all should be included in the utility model scope required for protection certainly.

Claims (7)

1. a rapid forming equipment volume claims sand device, it comprises: a movable top cover, one tank body, one discharging opening valve, one air communication mouth, one charging aperture valve and a volume claim sand control unit, described tank body is a cylindrical structure, this tubular structure has an inwall and an outer wall relative with this inner wall surface, described charging aperture valve and described air communication mouth are all arranged on described movable top cover and interval and arrange, described discharging opening valve is arranged at the side of described tank body away from described movable top cover, described volume claims sand control unit to be connected with discharging opening valve and charging aperture valve respectively, for controlling the opening and closing of discharging opening valve and charging aperture valve, it is characterized in that, the inwall of described tank body is provided with multiple parallel annular groove, the place plane of described annular groove is vertical with cylinder center's direction of principal axis of this tank body, described movable top cover is arranged in any one in described annular groove, and form the adjustable enclosure space of a volume with described tank body.

2. rapid forming equipment volume as claimed in claim 1 claims sand device, it is characterized in that, described any two adjacent annular grooves within the barrel on axle direction distance identical.

3. rapid forming equipment volume as claimed in claim 1 claims sand device, and it is characterized in that, described movable top cover is of a size of an adjustable dimension, to be connected with described annular groove.

4. rapid forming equipment volume as claimed in claim 1 claims sand device, it is characterized in that, described movable top cover can switch to coordinate in described tank body the change claiming sand body long-pending in described multiple annular groove.

5. rapid forming equipment volume as claimed in claim 1 claims sand device, and it is characterized in that, described charging aperture valve is normally open, and described discharging opening valve is in normally off.

6. rapid forming equipment volume as claimed in claim 1 claims sand device, and it is characterized in that, described volume claims sand control unit to comprise a time relay, and this time relay is used for setting and shakes out the time to calculate sand production volume.

7. rapid forming equipment volume as claimed in claim 6 claims sand device, it is characterized in that, described in shake out time and sand production volume meet formula T=α V, α is the coefficient relevant with the area of section of discharging opening valve.